CA1051232A - Method and apparatus for aligning the position of a workpiece in a roll turning lathe - Google Patents
Method and apparatus for aligning the position of a workpiece in a roll turning latheInfo
- Publication number
- CA1051232A CA1051232A CA279,025A CA279025A CA1051232A CA 1051232 A CA1051232 A CA 1051232A CA 279025 A CA279025 A CA 279025A CA 1051232 A CA1051232 A CA 1051232A
- Authority
- CA
- Canada
- Prior art keywords
- axis
- probe
- cylindrical
- gauging means
- alignment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract description 6
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Turning (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Abstract of the Disclosure This invention involves an indicator assembly and method for locating the position of the ends of a cylindrical workpiece in a roll turning lathe in order to allow accurate adjustment of the workpiece axis position into alignment with the turning axis of the lathe. The assembly is removably mounted on the tool slide of the lathe for radial movement into engagement with the workpiece, and is constructed to locate the relative position of the workpiece and machine axes in horizontal and vertical coordinates.
This apparatus is used in the method to compare the position of the cylindrical surface of the faceplate of the lathe with the position of the surface of the journal of the roll in the horizontal coordinate and to compare the position of the axis of the faceplate with the position of the axis of the journal in the vertical coordinate.
This apparatus is used in the method to compare the position of the cylindrical surface of the faceplate of the lathe with the position of the surface of the journal of the roll in the horizontal coordinate and to compare the position of the axis of the faceplate with the position of the axis of the journal in the vertical coordinate.
Description
~051232 In the normal operation of a lathe, a workpiece i9 mounted with its axis coincident with the spindle axis of the lathe and is turned about said axis. A tool is moved radially into engagement with the turning workpiece and material is removed as the workpiece turns. The tool is al80 translated along a track parallel to the turning axis of the lathe to allow for operative engagement of the tool along the length of the workpiece. By varying the radial and lateral position of the tool, a wide variety of shapes can be obtained. In order to insure that the finished ~hape i8 symmetrical 10 about the axi6 of the workpiece, it is essential that the workpiece axis be accurately aligned with the spindle or turning axis of the lathe. Generally, the workpiece is con~tructed with cylindrical end portions called journals and the axis of these portions are accurately located and may be engaged by the spindle. However, in certain instances, the axis of the workpiece is not obvious and the spindle cannot accurately be engaged. Also in some operations, the workpiece is supported solely from below on steady rests without help from the spindle engagement. In these instances, alignment of the workpiece and 3pindle axe3 is more difficult and additional means are required to affect this adjustment.
This adjustment was generally accomplished by the u9e of an appropriate gauge which would indicate po~ition of the journal surface in relation to the spindle axis. This gauge is attached to an arm which is secured to the faceplate of the lathe for rotation therewith. In Gperation, the gauge would be positioned in contact with the journal surface and rotated while the workpiece is still. Deflections of the gauge would indicate a lack of concentricity between the face plate and the journal surface. By adjusting the steady re~t until there is no deflection, the axi8 can be aligned. However, because of the awkward position of the gauge, adjustment of one end continuously requires readjustment OI the opposite end 1051Z32 - 2 - :
gradually minimizing the deflection until it is zero. This operation may take hours to accomplish, due to the cumbersome and inaccurate nature of the gauge assembly. In many instances, the alignment process may take longer than the actual turning oper~tion.
The indicator of the subject invention is more accurate, and easier to handle and results in a substantial reduction in the time needed to set up and align the workpiece with the spindle axis of the lathe.
An indicator assembly is provided to facilitate steady rest adjustment in a roll turning lathe for the purpose of coaxially aligning the axis of the roll 10 with the turning axis of the lathe . The assembly is constructed to be removably secured to the tool slide in the same manner as the tool and consists of two gauges, one of which is sensitive to position error in the vertical coordinate and the other of which being sensitive to position error in the horizonta] coordinate.
To check the position of the journal axis in the vertical or y-coordinate, a y-shaped yoke is constructed with two probe elements extending towards the roll. This yoke is situated on the indicator assembly for contact with the journal or faceplate as the tool slide is moved radially inward. The yoke is mounted on the indicator assembly for pivotal motion in a plane perpendicularto the journal or turning axis of the roll. Pivotal motion of the yoke causes 20 deelection of the y-coordinate gauge. By engagement of both y-coordinate probes on the circumference of the faceplate, a zero position in y-coordinates for the turning axis can be obtained. The indicator may then be moved to the journal surface and engaged therewith. If the journal axis is out of position in the vertical coordinate, the yoke will necessarily pivot to allow both probesto engage the surface of the journal. The resulting deflection registered on the y-coordinate gauge will be indicative of the required adjustment of the steady rest in the y or verticle coordinate. To insure accuracy, it is also necessary to check the position of the journal axis in the horizontal or x-coordinate. To accomplish this, a horizontal or x-coordinate position gauge is A 3o operatively connected to a retractable probe which is sprir~g hiased toward , .. .. .
, .
105~232 the journal surface of the roll and may be moved into engage-ment with said surface along the x-coordinate by appropriate movement of the tool slide. In operation the gauge is cali-brat:ed to the radius of the faceplate of the lathe. The dif-ference in radius between the faceplate and the journal is then calculated and the gauge is moved toward the journal an amount equal to said difference. If there is a deflection registered on the gauge, it indicates an amount of adjustment required to correct the error in this coordinate.
According to a further broad aspect of the present inven-tion, there is provided an alignment device for use in deter-mining whether each of a first and a second longitudinally adja-cent cylindrical members are coaxially aligned with one another on a turning machine. The alignment device comprises a first gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the horizontal plane aligned with the axis of rotation of the second cylindrical member.
A second gauging means is provided for detecting a misalignment of the axis of the first cylindrical member in respect to the ver-tical plane aligned with the axis of rotation of the second cylin-drical member. The first and second gauging means are both mounted on a movable support on the side of the axis of rotation of the turning machine. The support is movable to permit movement of the first and second gauging means parallel to the axis of rota-tion of the second cylindrical member. Both of the gauges are mounted on the side of the axis of rotation of the turning machine to permit a large variation in the diameters of any first cylin-drical members to be aligned and turned ihereon. The first gaug-` ing means comprises a first probe constructed to make contact with a cylindrical surface at two points spaced apart on a cir-cumference of the cylindrical surface. The prob~ is mounted for pivotal movement in a plane co~ aining the two points of contact , .
105~ ;~3Z
and their circumference. A first deflection indicator of the gauging means is mechanically arranged to indicate pivotal move-ment of the first probe in the plane. The second gauging means comprises a second probe constructed to make contact with a cylindrical surface at one point thereon. The second probe has a second deflection indicator mechanically arranged therewith to indicate linear displacement of the second probe. The first and second gauging means are both juxtaposed on the movable sup-port to permit ease of coaxial alignment of the first and second cylindrical m~mbers.
The invention is more fully described in conjunction with the appended ~-drawing and in said drawing: :
Figure 1 is a schematic perspective view of a roll turning lathe on which the invention may be used;
Figure 2 is a perspective view of a tool ~lide and block as~embly of the type which may be used to mount the subject invention;
Figure 3 is a side view of the indicator assembly of this invention;
Figure 4 i9 a front view of the indicator assembly of this invention;
Figure 5 is a top view of the indicator assembly of this invention;
Figure 6 is a perspective view of the indicator assembly of this invention in its operating position; and Figure 7 is a chart illustrating the geometry of the method and apparatus of this invention.
The subject invention is designed for use with a roll turning lathe as shown in Figure 1. The basic machine consists of a head stock 1 and a tail stock 2 having a common turning axis 3, The head stocks 1 and 2 have faceplates 4 and 5 mounted thereon for rotation about the axis 3 The faceplates 4 and 5 provide true cylindrical surfaces on the turning axis of the machine for calibrating the gauge of the indicator assembly in this invention. ~$~
- 3a -. .
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A typical roll 6 is mounted between the head stock I and tail stock 2 and is constructed with journals 7 and 8 which provide accurate cylindrical :;urf<lces ~ha~ are concentric with the desired axis of the roll 6 to permit coaxial - 3b -A
. .
10~ ~3Z - 4 -alignment there~,vith. The roll 6 is supported on steady rests 9 and 10.
As shown in Fi~ure 2, the tool 11 of this lathe is mounted on a tool block 12 which is releasably secured to a tool slide 13. The tool slide 13 provides a rough manual adjustment of the tool 11 in a direction transverse to the roll axis. The tool slide 13 is mounted in a cross slide 14 which provides further transverse adjustment of the tool position. The tool assembly consisting of tool 11, tool block 12, tool slide 13 and cross slide 14 is mounted on carriage 15 which can be translated axially along the length of roll 6 on rail 16. The movement of the cross slide 14 and the carriage 15 may be automatically controlled by an electronic control ùnit 17 mounted on the carriage 15.
As shown in Figure 2 the tool block 12 is releasably secured by a cylindrical cam 18 mounted for rotation on the tool slide 13. The shape of the cam is constructed to engage the tool block and rigidly secure it in operative position. By mounting the indicator of this invention on a b~ock similar to tool block 12, as shown in Figure 6, the identical mechanism can be used to releasably secure the indicator assembly to the tool slide 13.
The indicator assembly of this invention is best shown with reference to Figures 3 through 6 and consists of two gauge actuating units one unit 20 for indicating axis position in the vertical or y-coordinate and one unit 19 for indicating axis position in the horizontal or x-coordinate. The y-coordinate indicator 20 includes a gauge 24 operatively connected to the stem 30 of a y-shaped yoke 25 which is mounted on the indicator block 23 for pivotal movement about bolt 32 in a plane perpendicular to the turning axis 3 of the lathe.
The branches of the yoke 25 form probe elements 26 and 27 which extend in~lard towards the axis 3. Each probe element 26 and 27 includes a rotatable wheel 34 attached thereto, which rollingly rides on the cylindrical surface to be measured, preventing damage to that surface by sliding friction thereon, and permitting the yoke 25 to more easily pivot about its bolt 32. The plunger 29 ,A of gauge 24 engages the stem 30 of yoke 25. ThereforeJ pivotal motion .. ; .
1051232 .~ ~
of the yoke 25 will result ;n a proportional deflection of the gauge 24.
Actuation of the y-coordinate indicator 20 may be initiated simultaneously with the x-coordinate indicator 10. Therefore, movement of the x-coordinate probe Z1 into engagement with faceplate 4 will also result in engagement probes 26 and 27 on the cylindrical surface of faceplate 4. The indicator 20 is mounted on block 23 by means of a ball slide 28 to allow for a certain amount of retraction of the assembl~
20 to accommodate different diameter faceplates or rolls. Indicator 20 is biased towards the roll or faceplate surface by spring 33.
In operation, the contact points of probes 26 and 27 define an arc lO on the cylindrical surface of the faceplate 4 or journal 7 and since the longitudinal axis 31 of the yoke 25 bisects this arc, it is geometrically necessary that this axis intersects the journal or machine axis. Initially the y-indicator probes 26 and 27 are brought into contact with the faceplate surface and the gauge 24is calibrated at zero which would indicate the position of the turning axis 3 in the y-coordinate. The y-indicator assembly 20is then moved into engagement with the cylindrical surface of journal 7 until both probes 26 and 27 are in firm contact. If there is a position error in the y-coordinate, axis 31 will pivot through an angle as shown in Figure 7. This deflection will be proportional to the distance that the journal axis is off center and the steady rest may be adjusted until the deflection is eliminated.
This process is repeated on both ends of the machine to insure proper alignment. Since the movement of the indicator assembly is very flexible because of its support on the cross slide and tool carriage, the adjustment readings can be taken at the pivot axis of the roll. This will substantially limit the error caused by separate adjustment of each end and reduce the need for repetitive and time-consuming realignment of each end.
- Referring to Figure 7, the ~eometry of the subject invention can be observed. The cross sections illustrated show the axis of the roll journal A
7 displaced from the axis of the faceplate 4 a distance dx in the horizontal coordinate and a distance dy in the vertical coordinate.
The axis 31 of the gauge 24 having been calibrated to the surface of faceplate 4, will deflect through an angle as the probes 26 and 27 pivot into engagement with journal 7. The angle i8 observed to be directly proportional to error (dy) in the y-coordinate. By adjusting steady rest 9 to eliminate the deflection, alignment along the y-coordinate can be accomplished.
It can be seen that the relative radial positions of the surfaces of ~ -faceplate 4 and roll journal 7 in the x-coordinate should be the difference in the radii of the two surfaces or r1 - r2. Therefore, by calculating this value and adjusting the position of the probe 21 towards the journal 7 a distance equal to r1 - r2, the amount of error present (dx) can be ascertained. If the gauge 22 is calibrated to the surface of the faceplate, a deflection proportional to dx will be indicated. By adjusting the steady rest 9 until there is no deflection, alignment along this coordinate is obtained.
~ A30
This adjustment was generally accomplished by the u9e of an appropriate gauge which would indicate po~ition of the journal surface in relation to the spindle axis. This gauge is attached to an arm which is secured to the faceplate of the lathe for rotation therewith. In Gperation, the gauge would be positioned in contact with the journal surface and rotated while the workpiece is still. Deflections of the gauge would indicate a lack of concentricity between the face plate and the journal surface. By adjusting the steady re~t until there is no deflection, the axi8 can be aligned. However, because of the awkward position of the gauge, adjustment of one end continuously requires readjustment OI the opposite end 1051Z32 - 2 - :
gradually minimizing the deflection until it is zero. This operation may take hours to accomplish, due to the cumbersome and inaccurate nature of the gauge assembly. In many instances, the alignment process may take longer than the actual turning oper~tion.
The indicator of the subject invention is more accurate, and easier to handle and results in a substantial reduction in the time needed to set up and align the workpiece with the spindle axis of the lathe.
An indicator assembly is provided to facilitate steady rest adjustment in a roll turning lathe for the purpose of coaxially aligning the axis of the roll 10 with the turning axis of the lathe . The assembly is constructed to be removably secured to the tool slide in the same manner as the tool and consists of two gauges, one of which is sensitive to position error in the vertical coordinate and the other of which being sensitive to position error in the horizonta] coordinate.
To check the position of the journal axis in the vertical or y-coordinate, a y-shaped yoke is constructed with two probe elements extending towards the roll. This yoke is situated on the indicator assembly for contact with the journal or faceplate as the tool slide is moved radially inward. The yoke is mounted on the indicator assembly for pivotal motion in a plane perpendicularto the journal or turning axis of the roll. Pivotal motion of the yoke causes 20 deelection of the y-coordinate gauge. By engagement of both y-coordinate probes on the circumference of the faceplate, a zero position in y-coordinates for the turning axis can be obtained. The indicator may then be moved to the journal surface and engaged therewith. If the journal axis is out of position in the vertical coordinate, the yoke will necessarily pivot to allow both probesto engage the surface of the journal. The resulting deflection registered on the y-coordinate gauge will be indicative of the required adjustment of the steady rest in the y or verticle coordinate. To insure accuracy, it is also necessary to check the position of the journal axis in the horizontal or x-coordinate. To accomplish this, a horizontal or x-coordinate position gauge is A 3o operatively connected to a retractable probe which is sprir~g hiased toward , .. .. .
, .
105~232 the journal surface of the roll and may be moved into engage-ment with said surface along the x-coordinate by appropriate movement of the tool slide. In operation the gauge is cali-brat:ed to the radius of the faceplate of the lathe. The dif-ference in radius between the faceplate and the journal is then calculated and the gauge is moved toward the journal an amount equal to said difference. If there is a deflection registered on the gauge, it indicates an amount of adjustment required to correct the error in this coordinate.
According to a further broad aspect of the present inven-tion, there is provided an alignment device for use in deter-mining whether each of a first and a second longitudinally adja-cent cylindrical members are coaxially aligned with one another on a turning machine. The alignment device comprises a first gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the horizontal plane aligned with the axis of rotation of the second cylindrical member.
A second gauging means is provided for detecting a misalignment of the axis of the first cylindrical member in respect to the ver-tical plane aligned with the axis of rotation of the second cylin-drical member. The first and second gauging means are both mounted on a movable support on the side of the axis of rotation of the turning machine. The support is movable to permit movement of the first and second gauging means parallel to the axis of rota-tion of the second cylindrical member. Both of the gauges are mounted on the side of the axis of rotation of the turning machine to permit a large variation in the diameters of any first cylin-drical members to be aligned and turned ihereon. The first gaug-` ing means comprises a first probe constructed to make contact with a cylindrical surface at two points spaced apart on a cir-cumference of the cylindrical surface. The prob~ is mounted for pivotal movement in a plane co~ aining the two points of contact , .
105~ ;~3Z
and their circumference. A first deflection indicator of the gauging means is mechanically arranged to indicate pivotal move-ment of the first probe in the plane. The second gauging means comprises a second probe constructed to make contact with a cylindrical surface at one point thereon. The second probe has a second deflection indicator mechanically arranged therewith to indicate linear displacement of the second probe. The first and second gauging means are both juxtaposed on the movable sup-port to permit ease of coaxial alignment of the first and second cylindrical m~mbers.
The invention is more fully described in conjunction with the appended ~-drawing and in said drawing: :
Figure 1 is a schematic perspective view of a roll turning lathe on which the invention may be used;
Figure 2 is a perspective view of a tool ~lide and block as~embly of the type which may be used to mount the subject invention;
Figure 3 is a side view of the indicator assembly of this invention;
Figure 4 i9 a front view of the indicator assembly of this invention;
Figure 5 is a top view of the indicator assembly of this invention;
Figure 6 is a perspective view of the indicator assembly of this invention in its operating position; and Figure 7 is a chart illustrating the geometry of the method and apparatus of this invention.
The subject invention is designed for use with a roll turning lathe as shown in Figure 1. The basic machine consists of a head stock 1 and a tail stock 2 having a common turning axis 3, The head stocks 1 and 2 have faceplates 4 and 5 mounted thereon for rotation about the axis 3 The faceplates 4 and 5 provide true cylindrical surfaces on the turning axis of the machine for calibrating the gauge of the indicator assembly in this invention. ~$~
- 3a -. .
lO~;;lZ;~Z
A typical roll 6 is mounted between the head stock I and tail stock 2 and is constructed with journals 7 and 8 which provide accurate cylindrical :;urf<lces ~ha~ are concentric with the desired axis of the roll 6 to permit coaxial - 3b -A
. .
10~ ~3Z - 4 -alignment there~,vith. The roll 6 is supported on steady rests 9 and 10.
As shown in Fi~ure 2, the tool 11 of this lathe is mounted on a tool block 12 which is releasably secured to a tool slide 13. The tool slide 13 provides a rough manual adjustment of the tool 11 in a direction transverse to the roll axis. The tool slide 13 is mounted in a cross slide 14 which provides further transverse adjustment of the tool position. The tool assembly consisting of tool 11, tool block 12, tool slide 13 and cross slide 14 is mounted on carriage 15 which can be translated axially along the length of roll 6 on rail 16. The movement of the cross slide 14 and the carriage 15 may be automatically controlled by an electronic control ùnit 17 mounted on the carriage 15.
As shown in Figure 2 the tool block 12 is releasably secured by a cylindrical cam 18 mounted for rotation on the tool slide 13. The shape of the cam is constructed to engage the tool block and rigidly secure it in operative position. By mounting the indicator of this invention on a b~ock similar to tool block 12, as shown in Figure 6, the identical mechanism can be used to releasably secure the indicator assembly to the tool slide 13.
The indicator assembly of this invention is best shown with reference to Figures 3 through 6 and consists of two gauge actuating units one unit 20 for indicating axis position in the vertical or y-coordinate and one unit 19 for indicating axis position in the horizontal or x-coordinate. The y-coordinate indicator 20 includes a gauge 24 operatively connected to the stem 30 of a y-shaped yoke 25 which is mounted on the indicator block 23 for pivotal movement about bolt 32 in a plane perpendicular to the turning axis 3 of the lathe.
The branches of the yoke 25 form probe elements 26 and 27 which extend in~lard towards the axis 3. Each probe element 26 and 27 includes a rotatable wheel 34 attached thereto, which rollingly rides on the cylindrical surface to be measured, preventing damage to that surface by sliding friction thereon, and permitting the yoke 25 to more easily pivot about its bolt 32. The plunger 29 ,A of gauge 24 engages the stem 30 of yoke 25. ThereforeJ pivotal motion .. ; .
1051232 .~ ~
of the yoke 25 will result ;n a proportional deflection of the gauge 24.
Actuation of the y-coordinate indicator 20 may be initiated simultaneously with the x-coordinate indicator 10. Therefore, movement of the x-coordinate probe Z1 into engagement with faceplate 4 will also result in engagement probes 26 and 27 on the cylindrical surface of faceplate 4. The indicator 20 is mounted on block 23 by means of a ball slide 28 to allow for a certain amount of retraction of the assembl~
20 to accommodate different diameter faceplates or rolls. Indicator 20 is biased towards the roll or faceplate surface by spring 33.
In operation, the contact points of probes 26 and 27 define an arc lO on the cylindrical surface of the faceplate 4 or journal 7 and since the longitudinal axis 31 of the yoke 25 bisects this arc, it is geometrically necessary that this axis intersects the journal or machine axis. Initially the y-indicator probes 26 and 27 are brought into contact with the faceplate surface and the gauge 24is calibrated at zero which would indicate the position of the turning axis 3 in the y-coordinate. The y-indicator assembly 20is then moved into engagement with the cylindrical surface of journal 7 until both probes 26 and 27 are in firm contact. If there is a position error in the y-coordinate, axis 31 will pivot through an angle as shown in Figure 7. This deflection will be proportional to the distance that the journal axis is off center and the steady rest may be adjusted until the deflection is eliminated.
This process is repeated on both ends of the machine to insure proper alignment. Since the movement of the indicator assembly is very flexible because of its support on the cross slide and tool carriage, the adjustment readings can be taken at the pivot axis of the roll. This will substantially limit the error caused by separate adjustment of each end and reduce the need for repetitive and time-consuming realignment of each end.
- Referring to Figure 7, the ~eometry of the subject invention can be observed. The cross sections illustrated show the axis of the roll journal A
7 displaced from the axis of the faceplate 4 a distance dx in the horizontal coordinate and a distance dy in the vertical coordinate.
The axis 31 of the gauge 24 having been calibrated to the surface of faceplate 4, will deflect through an angle as the probes 26 and 27 pivot into engagement with journal 7. The angle i8 observed to be directly proportional to error (dy) in the y-coordinate. By adjusting steady rest 9 to eliminate the deflection, alignment along the y-coordinate can be accomplished.
It can be seen that the relative radial positions of the surfaces of ~ -faceplate 4 and roll journal 7 in the x-coordinate should be the difference in the radii of the two surfaces or r1 - r2. Therefore, by calculating this value and adjusting the position of the probe 21 towards the journal 7 a distance equal to r1 - r2, the amount of error present (dx) can be ascertained. If the gauge 22 is calibrated to the surface of the faceplate, a deflection proportional to dx will be indicated. By adjusting the steady rest 9 until there is no deflection, alignment along this coordinate is obtained.
~ A30
Claims (5)
1. An alignment device for use in determining whether each of a first and a second longitudinally adjacent cylindrical members are coaxially aligned with one another on a turning machine, the alignment device comprising:
a first gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the horizontal plane aligned with the axis of rotation of the second cylindrical member;
a second gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the vertical plane aligned with the axis of rotation of the second cylindrical member;
said first and second gauging means both being mounted on a movable support on the side of the axis of rotation of said turning machine, said support being movable to permit movement of said first and second gauging means parallel to the axis of rotation of said second cylindrical member, both of said gauges being mounted on the side of the axis of rotation of said turning machine to permit a large variation in the diameters of any first cylindrical members to be aligned and turned thereon;
said first gauging means comprising a first probe constructed to make contact with a cylindrical surface at two points spaced apart on a circumference of the cylindrical surface, said probe being mounted for pivotal movement in a plane containing the two points of contact and their circumference;
a first deflection indicator of said gauging means mechanically arranged to indicate pivotal movement of the first probe in said plane; and said second gauging means comprising a second probe constructed to make contact with a cylindrical surface at one point thereon, said second probe having a second deflection indicator mechanically arranged therewith to indicate linear displacement of said second probe, said first and second gauging means both being juxtaposed on said movable support to permit ease of coaxial alignment of said first and second cylindrical members.
a first gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the horizontal plane aligned with the axis of rotation of the second cylindrical member;
a second gauging means for detecting a misalignment of the axis of the first cylindrical member in respect to the vertical plane aligned with the axis of rotation of the second cylindrical member;
said first and second gauging means both being mounted on a movable support on the side of the axis of rotation of said turning machine, said support being movable to permit movement of said first and second gauging means parallel to the axis of rotation of said second cylindrical member, both of said gauges being mounted on the side of the axis of rotation of said turning machine to permit a large variation in the diameters of any first cylindrical members to be aligned and turned thereon;
said first gauging means comprising a first probe constructed to make contact with a cylindrical surface at two points spaced apart on a circumference of the cylindrical surface, said probe being mounted for pivotal movement in a plane containing the two points of contact and their circumference;
a first deflection indicator of said gauging means mechanically arranged to indicate pivotal movement of the first probe in said plane; and said second gauging means comprising a second probe constructed to make contact with a cylindrical surface at one point thereon, said second probe having a second deflection indicator mechanically arranged therewith to indicate linear displacement of said second probe, said first and second gauging means both being juxtaposed on said movable support to permit ease of coaxial alignment of said first and second cylindrical members.
2. An alignment device as recited in claim 1, wherein said first probe comprises a roller disposed at each of the two points that make contact with the cylindrical surface.
3. An alignment device as recited in claim 1, wherein said first probe is also mounted for linear movement along a path parallel to said plane.
4. An alignment device as recited in claim 3, wherein said first probe is resiliently urged along said path in a direction towards the cylindrical surface to be contacted.
5. An alignment device as recited in claim 4, wherein said second probe is biasedly arranged for linear displacement along a path parallel to said plane in which said first probe is pivotally movable.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69757476A | 1976-06-18 | 1976-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1051232A true CA1051232A (en) | 1979-03-27 |
Family
ID=24801656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA279,025A Expired CA1051232A (en) | 1976-06-18 | 1977-05-24 | Method and apparatus for aligning the position of a workpiece in a roll turning lathe |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS52156492A (en) |
| BR (1) | BR7703987A (en) |
| CA (1) | CA1051232A (en) |
| CH (1) | CH620990A5 (en) |
| DE (1) | DE2727062A1 (en) |
| FR (1) | FR2354838A1 (en) |
| GB (1) | GB1583893A (en) |
| IT (1) | IT1115490B (en) |
| MX (1) | MX144424A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO149296C (en) * | 1978-03-17 | 1984-03-21 | Johde Fa | CYLINDER SHAPED MOLDING APPLIANCE |
| KR101401264B1 (en) * | 2012-06-27 | 2014-06-02 | 한국생산기술연구원 | Probe Mounting Jig of Separation and Combination |
| CN106197228A (en) * | 2016-06-20 | 2016-12-07 | 许昌市大力电机制造有限公司 | A kind of automatization rapid coaxial detector |
| CN106323145A (en) * | 2016-11-02 | 2017-01-11 | 安阳睿恒数控机床股份有限公司 | Simple coaxiality detection device |
| DE102017121087A1 (en) * | 2017-09-12 | 2019-03-14 | Index-Werke Gmbh & Co. Kg Hahn & Tessky | Method for positioning a center on a geometric axis in a machine tool |
| US11498178B2 (en) | 2020-04-22 | 2022-11-15 | Doug Buchanan | Universal tram |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1587217A (en) * | 1924-11-12 | 1926-06-01 | Wymangordon Company | Crank-shaft indexing machine |
| US2468395A (en) * | 1946-09-23 | 1949-04-26 | Pierre J Fredin | Gauge for grinding machines |
| US2674045A (en) * | 1950-03-28 | 1954-04-06 | Lakomski John | Centering tool |
| US2749673A (en) * | 1953-02-19 | 1956-06-12 | Landis Tool Co | Grinding machine set-up means |
| DE1164197B (en) * | 1959-09-11 | 1964-02-27 | Wohlenberg Kommanditgesellscha | Device for automatic adjustment of the steel on swivel arms |
| US3079694A (en) * | 1960-02-12 | 1963-03-05 | Yemmans Otto | Tool stock centering device |
| US3371419A (en) * | 1962-10-15 | 1968-03-05 | Rexall Drug Chemical | Out-of-roundness and diameter gage |
| JPS4315440Y1 (en) * | 1964-08-12 | 1968-06-27 | ||
| DE2312786A1 (en) * | 1973-03-15 | 1974-09-19 | Salje Ernst | ALIGNMENT DEVICE FOR TOOLS OR WORKPIECE CARRIERS |
-
1977
- 1977-05-24 CA CA279,025A patent/CA1051232A/en not_active Expired
- 1977-06-14 MX MX16946077A patent/MX144424A/en unknown
- 1977-06-14 CH CH728877A patent/CH620990A5/en not_active IP Right Cessation
- 1977-06-15 DE DE19772727062 patent/DE2727062A1/en not_active Withdrawn
- 1977-06-16 IT IT2475277A patent/IT1115490B/en active
- 1977-06-17 BR BR7703987A patent/BR7703987A/en unknown
- 1977-06-17 FR FR7718701A patent/FR2354838A1/en active Granted
- 1977-06-17 JP JP7198677A patent/JPS52156492A/en active Granted
- 1977-06-17 GB GB2534977A patent/GB1583893A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1583893A (en) | 1981-02-04 |
| CH620990A5 (en) | 1980-12-31 |
| FR2354838B1 (en) | 1983-01-07 |
| BR7703987A (en) | 1978-03-28 |
| JPS6121761B2 (en) | 1986-05-28 |
| MX144424A (en) | 1981-10-13 |
| IT1115490B (en) | 1986-02-03 |
| FR2354838A1 (en) | 1978-01-13 |
| DE2727062A1 (en) | 1977-12-29 |
| JPS52156492A (en) | 1977-12-26 |
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