CN107421426B - Concentricity gauge for spiral tie device - Google Patents
Concentricity gauge for spiral tie device Download PDFInfo
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- CN107421426B CN107421426B CN201710885598.0A CN201710885598A CN107421426B CN 107421426 B CN107421426 B CN 107421426B CN 201710885598 A CN201710885598 A CN 201710885598A CN 107421426 B CN107421426 B CN 107421426B
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- 238000001514 detection method Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
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- 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
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Abstract
The invention provides a concentricity gauge for a spiral link device, which comprises a bottom plate, a slider base arranged on the bottom plate, a driving assembly arranged on the slider base and a link clamp arranged on the slider base, wherein the link clamp is clamped or loosened through the assembly, a connector clamp is arranged on the bottom plate and comprises a fixing plate and a detection plate, a placing groove on the fixing plate is used for preventing a connector, the detection plate is sunken towards the bottom plate and comprises a first detection wall and a second detection wall which are perpendicular to the bottom plate, the placing groove, the vertical groove and a spiral link channel formed by the link clamp are all positioned on a straight line, a measuring device is arranged between the slider base and the connector clamp, and a clamping device is arranged on the fixing plate, and the concentricity gauge has the beneficial effects that: the detection device can measure the concentricity of the connecting sheet accurately and reliably; the clamping device can clamp the connector to be stable and static for convenient measurement.
Description
Technical Field
The invention relates to environment-friendly mechanical equipment, in particular to a concentricity gauge for a spiral tie device.
Background
As shown in fig. 1-2, the spiral link device is a simple in-tube rotation device, the spiral link device comprises a spiral link 10, one end of the spiral link 10 is connected to one end of a T-shaped connecting piece 9 through a rivet, the other end of the connecting piece 9 is fixed on a connecting pin (the connecting pin is not visible in the drawing) through the rivet, the connecting pin is rotatably installed in a connecting head 7, three supporting feet 8 are fixed on the connecting head 7, each supporting foot 8 has elasticity, the three supporting feet 8 are surrounded outside one end of the connecting piece 9, and the other end of the connecting piece 9 extends out of the three supporting feet 8. The concentricity detection is to detect whether the center line of the connecting piece 9 is aligned with the center line of the connecting pin on the connecting head 7, particularly, the degree of deviation of the connecting piece 9 from the center line in the width direction (as a is a schematic diagram of the thickness direction of the connecting piece 9 in fig. 2, m is a thickness, b is a schematic diagram of the width direction of the connecting piece 9, and n is a width). The concentricity of the connecting sheet 9 is critical to the use of the connecting sheet 9 in the spiral link device, if the connecting sheet 9 deviates from the standard value in the width direction by a relatively large amount, the connecting sheet 9 can rub against the supporting leg 8 or the heat exchange tube wall during rotation, so that the connecting sheet 9, the supporting leg 8 and the heat exchange tube are worn greatly, the service time is short, and great economic loss is caused for a user.
Disclosure of Invention
The invention aims to solve the problem that the concentricity of a spiral tie device cannot be detected in the prior art, and provides a concentricity detection tool for the spiral tie device aiming at the defects in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a concentricity gauge for a helical tie device, comprising: the base plate and the slider base are fixedly arranged on the base plate; the connector clamp comprises a detection plate and a fixing plate, wherein the top surface of the fixing plate is downwards sunken to form a placing groove, the bottom surface of the placing groove is downwards sunken to form a containing groove, the containing groove is used for containing a supporting leg, the supporting leg is suspended in the containing groove, and the bottom surface of the placing groove supports the connector after the connector is placed in the placing groove; a detection plate positioned at one end of the connector in the placing groove is fixed on the fixed plate, a vertical groove for the connecting sheet to pass through is formed in the detection plate, one inner wall of the vertical groove is a first detection wall, the other inner wall of the vertical groove is a second detection wall, and the first detection wall and the second detection wall are perpendicular to the bottom plate; when the connector is placed in the placing groove, the center line of the connector is parallel to the bottom plate, the first detection wall and the second detection wall, and the distance from the center line of the connector to the first detection wall is equal to the distance from the center line of the connector to the second detection wall;
the tie clamp comprises a first clamping block, a second clamping block and a driving assembly, wherein the first clamping block and the second clamping block are positioned on one side, far away from the fixed plate, of the detection block, the first clamping block is arranged on the sliding block base and can slide relative to the sliding block base, and the second clamping block is fixed on the sliding block base; the first clamping block is far away from the output part of the side driving assembly of the second clamping block and fixed, so that the first clamping block moves towards the direction where the second clamping block is or moves away from the direction where the second clamping block is under the driving of the driving assembly, and the spiral tie can be clamped after the first clamping block is buckled with the second clamping block; and the connecting piece is parallel to the bottom plate after the connecting head is placed in the placing groove by rotating the spiral tie and the connecting piece and clamping the spiral tie. Thus, the connector is placed in the placing groove, the first clamping block and the second clamping block can clamp the spiral tie, or rotate the spiral tie, and the concentricity of the connector in the width direction is measured approximately.
Further, the driving assembly comprises a moving block, a rotation-assisting handle, a rotating ring, a central shaft and a gear; the moving block is an output part of the driving assembly, a guide groove is formed in the base of the sliding block, and the moving block is arranged in the guide groove and can slide under the guide of the inner wall of the guide groove; the slide block base is vertically provided with a central shaft beside the transmission teeth, the central shaft is rotationally sleeved with a rotary ring, the rotary ring penetrates through a gear fixed with the rotary ring, the gear is meshed with the transmission teeth on the moving block, and a rotation-assisting handle extends on the outer wall of the rotary ring, so that the slide block has the advantages that: the rotation assisting handle is rotated, so that the first clamping block can move towards the direction where the second clamping block is located or move away from the direction of the second clamping block.
Further, a measuring device on the bottom plate is arranged between the slider base and the detection plate, and the measuring device comprises: two brackets which are all erected on the bottom plate; the two ends of the scale are respectively fixed with the top ends of the two brackets, the scale is parallel to the bottom plate and is vertical to the central line of the connecting head in the placing groove, a 0 scale mark is marked at the center of the scale, a first scale mark and a second scale mark which are respectively positioned at two sides of the 0 scale mark are marked on the scale, the first scale mark and the second scale mark take the 0 scale mark as the original points, the 0 scale mark is vertical to the bottom plate and the central line of the connecting head in the placing groove, and the 0 scale mark is intersected with the central line of the connecting head in the placing groove along the line; the two cursors are respectively positioned at the first scale mark and the second scale mark, each cursor comprises a positioning strip and a sliding head for clamping the scale, the sliding head is arranged on the scale in a sliding manner, and each positioning strip is suspended below the sliding head and is perpendicular to the bottom plate; the advantage of this is: after the spiral tie device is fixed on the concentricity gauge, two cursors on the ruler can be moved to measure the width direction of the connecting sheet, and the two cursors can accurately measure the concentricity of the connecting sheet in the width direction, so that the method is accurate, convenient and easy to implement.
Further, a clamping device is arranged on the fixed plate, the clamping device comprises an n-shaped mounting frame and clamping blocks, the mounting frame stretches across the mounting groove and is fixed with the top surface of the fixed plate, the clamping blocks are arranged right below the mounting frame, sliding rails are arranged on the inner wall of the mounting groove of the fixed plate, the guiding direction of the sliding rails is perpendicular to the bottom plate, guiding blocks are respectively fixed on two side surfaces of the clamping blocks, and the guiding blocks are slidably arranged on the sliding rails; the clamping block upper portion is connected with two fixed pins, and the mounting bracket is passed to fixed pin upper portion round pin head, and clamping block bottom surface offered with connector assorted circular recess, and two fixed pins all pass a clamping spring, and every clamping spring one end is all supported in the mounting bracket below, and the other end supports in clamping block upper portion to the clamping block compresses tightly the connector on the standing groove bottom surface under clamping spring elasticity effect when no exogenic action, is connected with a handle on two round pin head upper portions. The advantage of this is: lifting the handle can clamp the connector in the placing groove, and the connector is prevented from moving to influence the measuring result.
Further, the concentricity gauge further comprises: the concentricity indicating device comprises a battery, a light emitting diode and a wire head, wherein one end of the battery is arranged on the upper base plate and is electrically connected to the detection plate, the detection plate and the connecting pin are made of conductive materials, the anode of the light emitting diode is electrically connected to the wire head, the cathode of the light emitting diode is grounded, and the wire head is used for being in contact with the connecting pin during detection.
Further, the rotation-assisting handle is detachably connected with the rotating ring, and the outer wall of the rotating ring is provided with a jack for inserting the rotation-assisting handle. Before use, the rotation-assisting handle can be taken down and put into a channel formed by the tie fixture and a vertical groove of the detection plate, and whether the channel is on a straight line or not is measured. At present, as a plate is cut by a wire in the prior use, the method is troublesome and unscientific, and the problem of calibrating a reference can be solved by utilizing the fact that whether a rotation-assisting handle measuring channel is in a straight line or not, not only is redundant equipment not added, but also local materials can be obtained.
Compared with the prior art, the invention has the following beneficial effects:
1. after the spiral link device is fixed on the concentricity gauge, two cursors on the ruler can be moved to measure the width direction of the connecting sheet, and the two cursors can measure the concentricity of the connecting sheet in the width direction, so that the problem that the concentricity of the spiral link cannot be measured in the prior art is solved, and the method is accurate, convenient and easy to implement.
2. The clamping device is arranged, so that a user does not press the connector by one hand, and the connector can be fixed in the placing groove of the fixing plate in a static manner, thereby being beneficial to accurate measurement.
3. The reference of the concentricity gauge is corrected by using the rotation-assisting handle, the plate is not cut linearly, the material is saved, and the convenience and the time are realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of a spiral link apparatus.
Fig. 2 is a schematic view of the thickness and width direction of the connection piece.
FIG. 3 is a schematic diagram of the present invention.
FIG. 4 is a schematic diagram of the measuring device of the present invention (only the measuring device is shown).
Fig. 5 is a top view of the measuring device.
Fig. 6 schematically illustrates a clamping device.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention more clear and easy to understand, the present invention is further described below with reference to the accompanying drawings and the detailed description:
a concentricity testing fixture for a spiral tie apparatus as shown in fig. 3 comprises: the base plate 1, the base plate 2 of the slide block is fixedly arranged on the base plate 1; the connector 7 fixture 3 comprises a detection plate 31 and a fixing plate 32, wherein the top surface of the fixing plate 32 is downwards sunken to form a placing groove, the bottom surface of the placing groove is downwards sunken to form a containing groove, and the containing groove is used for containing a supporting leg 8 so as to support the connector 7 after the connector 7 is placed in the placing groove; a detection plate 31 positioned at one end of the connector 7 in the placing groove is fixed on the fixed plate 32, a vertical groove for the connecting sheet 9 to penetrate out is formed in the detection plate 31, one inner wall of the vertical groove is a first detection wall, the other inner wall of the vertical groove is a second detection wall, and the first detection wall and the second detection wall are perpendicular to the bottom plate 1; when the connector 7 is placed in the placing groove, the center line of the connector 7 is parallel to the bottom plate 1, the first detection wall and the second detection wall, and the distance from the center line of the connector 7 to the first detection wall is equal to the distance from the center line of the connector 7 to the second detection wall; the tie bar clamp 4 comprises a first clamping block 41, a second clamping block 42 and a driving assembly 43, wherein the first clamping block 41 and the second clamping block 42 are positioned on one side of the detection block far away from the fixed plate 32, the first clamping block 41 is arranged on the slider base 2 and can slide relative to the slider base 2, and the second clamping block 42 is fixed on the slider base 2; the first clamping block 41 is fixed away from the output part of the side driving assembly 43 of the second clamping block 42, and the driving assembly 43 comprises a moving block 431, a rotation-assisting handle 432, a rotating ring 433), a central shaft and a gear; the moving block 431 is an output part of the driving assembly 43, a guide groove is formed in the slider base 2, and the moving block 431 is arranged in the guide groove and can slide under the guide of the inner wall of the guide groove; the slide block base 2 is vertically provided with a central shaft beside the transmission teeth, the central shaft is rotationally sleeved with a rotary ring 433, the rotary ring 433 penetrates through a gear fixed with the rotary ring 433, the gear is meshed with the transmission teeth on the moving block 431, a rotation-assisting handle 432 extends on the outer wall of the rotary ring 433, the rotation-assisting handle 432 is detachably connected with the rotary ring 433, and the outer wall of the rotary ring 433 is provided with a jack for inserting the rotation-assisting handle 432. Turning the turning handle 432 can move the first clamping block 41 in a direction facing the second clamping block 42 or in a direction facing away from the second clamping block 42. The first clamping block 41 moves towards the direction where the second clamping block 42 is located or moves away from the direction of the second clamping block 42 under the driving of the driving component 43, and the first clamping block 41 and the second clamping block 42 can clamp the spiral link 10 after being buckled; the spiral tie 10 and the connecting sheet 9 are rotated and the spiral tie 10 is clamped, so that the connecting sheet 9 is parallel to the bottom plate 1 after the connecting head 7 is placed in the placing groove; concentricity gauge further comprises: the concentricity indicating device comprises a battery 11, a light emitting diode 12 and a wire head 13, wherein one end of the battery 12 is arranged on the upper base plate 1 and is electrically connected to the detection plate 31, the detection plate 31 and the connecting pin are made of conductive materials, the anode of the light emitting diode is electrically connected to the wire head 13, the cathode of the light emitting diode 12 is grounded, and the wire head 13 is used for being contacted with the connecting pin during detection.
In fig. 4 and 5, a measuring device 5 is provided between the slider base 2 and the detection plate 31, the measuring device 5 including: two brackets 51 standing on the bottom plate 1; the two ends of the scale 52 are respectively fixed with the top ends of the two brackets 51, the scale 52 is parallel to the bottom plate 1 and is vertical to the central line of the connecting head 7 in the placing groove, a 0 scale mark is marked at the center of the scale 52, a first scale mark and a second scale mark which are respectively positioned at two sides of the 0 scale mark are marked on the scale 52, the first scale mark and the second scale mark take the 0 scale mark as the original points, the 0 scale mark is vertical to the central line of the bottom plate (1) and the connecting head 7 in the placing groove, and the 0 scale mark is intersected with the central line of the connecting head 7 in the placing groove along the line; two cursors 53, the two cursors are located at the first scale mark and the second scale mark respectively, each cursor 53 includes a positioning bar 531 and a sliding head 532 for clamping the scale 52, the sliding head 532 is slidingly arranged on the scale 52, each positioning bar 531 is suspended below the sliding head 532, and the positioning bar 531 is vertical to the bottom plate 1;
in fig. 6, a clamping device 6 is arranged on a fixing plate 32, the clamping device 6 comprises an n-shaped mounting frame 61 and clamping blocks 62, the mounting frame 61 spans a placing groove and is fixed with the top surface of the fixing plate 32, the clamping blocks 62 are arranged right below the mounting frame 61, sliding rails are arranged on the inner wall of the placing groove of the fixing plate 32, the guiding direction of the sliding rails is perpendicular to the bottom plate 1, guiding blocks 621 are respectively fixed on two side surfaces of the clamping blocks 62, and the guiding blocks 621 are slidably arranged on the sliding rails; the clamping block 62 upper portion is connected with two fixed pins 622, and fixed pin 622 upper portion round pin head passes mounting bracket 61, and clamping block 62 bottom surface offered with connector 7 assorted circular recess, two fixed pins 622 all pass a clamping spring 63, and every clamping spring 63 one end all supports in mounting bracket 61 below, and the other end supports in clamping block 62 upper portion to clamping block 62 compresses tightly connector 7 on the standing groove bottom surface under clamping spring 63 elasticity effect when no exogenic action, is connected with a handle 64 on two round pin head upper portions.
When the connecting piece is used, the lifting handle 64 is firstly lifted to put the connecting piece 7 into the placing groove, one supporting leg 8 is put into the accommodating groove, so that the supporting leg is suspended and cannot shake, at the moment, the lifting handle 64 clamping block 62 is put down to press the connecting piece 7, the spiral tie 10 is clamped through the clamping screw 4 after the spiral tie 10 is tensioned, the connecting piece 9 is positioned at the horizontal position, the central line of the connecting piece 7 is required to be perpendicular to the scale of the scale 52, and finally the numerical value of the width direction of the connecting piece 9 is measured by sliding the vernier 53.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (5)
1. Concentricity gauge for a spiral tie device, comprising:
a bottom plate (1);
the sliding block base (2) is fixedly arranged on the bottom plate (1);
the connector clamp (3) comprises a detection plate (31) and a fixing plate (32), wherein the top surface of the fixing plate (32) is downwards sunken to form a placing groove, the bottom surface of the placing groove is downwards sunken to form a containing groove, and the containing groove is used for containing a supporting leg (8) so as to support the connector after the connector is placed in the placing groove; a detection plate (31) positioned at one end of the connector in the placing groove is fixed on the fixed plate (32), a vertical groove for the connecting sheet (9) to penetrate out is formed in the detection plate (31), one inner wall of the vertical groove is a first detection wall, the other inner wall of the vertical groove is a second detection wall, and the first detection wall and the second detection wall are perpendicular to the bottom plate (1); when the connector is placed in the placing groove, the center line of the connector is parallel to the bottom plate (1), the first detection wall and the second detection wall, and the distance from the center line of the connector to the first detection wall is equal to the distance from the center line of the connector to the second detection wall;
the tie clamp (4) comprises a first clamping block (41), a second clamping block (42) and a driving assembly (43), wherein the first clamping block (41) and the second clamping block (42) are positioned on one side of the detection block far away from the fixed plate (32), the first clamping block (41) is arranged on the sliding block base (2) and can slide relative to the sliding block base (2), and the second clamping block (42) is fixed on the sliding block base (2); the output part of the side driving assembly (43) of the first clamping block (41) far away from the second clamping block (42) is fixed, so that the first clamping block (41) moves towards the direction of the second clamping block (42) or away from the direction of the second clamping block (42) under the driving of the driving assembly (43), and the first clamping block (41) and the second clamping block (42) can clamp the spiral tie (10) after being buckled; the spiral tie (10) and the connecting sheet (9) are rotated and the spiral tie (10) is clamped, so that the connecting sheet (9) is parallel to the bottom plate (1) after the connecting head is placed in the placing groove;
a measuring device (5) located on the bottom plate (1) is arranged between the slider base (2) and the detection plate (31), and the measuring device (5) comprises: two brackets (51) which are respectively erected on the bottom plate (1);
the two ends of the scale (52) are respectively fixed with the top ends of the two brackets (51), the scale (52) is parallel to the bottom plate (1) and is vertical to the central line of the connecting head in the placing groove, the center of the scale (52) is marked with a 0 scale mark, the scale (52) is marked with a first scale mark and a second scale mark which are respectively positioned at two sides of the 0 scale mark, the first scale mark and the second scale mark take the 0 scale mark as the original points, the 0 scale mark is vertical to the central line of the connecting head in the placing groove and is vertical to the bottom plate (1) and the central line of the connecting head in the placing groove, and the 0 scale mark is intersected with the central line of the connecting head in the placing groove along the line;
two cursors (53) are located first scale mark and second scale mark department respectively, and each cursor (53) all includes locating strip (531) and the slip head (532) that presss from both sides scale (52), and slip head (532) slidingly set up on scale (52), and each locating strip (531) hangs in slip head (532) below, and locating strip (531) are perpendicular with bottom plate (1).
2. The concentricity inspection tool for a spiral link apparatus according to claim 1, wherein the driving assembly (43) comprises a moving block (431), a rotation-assisting handle (432), a rotation ring (433), a central shaft, and a gear; the moving block (431) is an output part of the driving assembly (43), a guide groove is formed in the slider base (2), and the moving block (431) is arranged in the guide groove and can slide under the guide of the inner wall of the guide groove; a central shaft beside the transmission teeth is vertically arranged on the slider base (2), a rotary ring (433) is rotationally sleeved on the central shaft, the rotary ring (433) penetrates through a gear fixed with the rotary ring, the gear is meshed with the transmission teeth on the moving block (431), a rotation-assisting handle (432) extends on the outer wall of the rotary ring (433), and the rotation-assisting handle (432) is rotated to enable the first clamping block (41) to move in the direction where the second clamping block (42) is located or move in the direction where the second clamping block (42) is away from.
3. The concentricity inspection tool for the spiral link device according to claim 2, wherein a clamping device (6) is arranged on the fixing plate (32), the clamping device (6) comprises an n-shaped mounting frame (61) and a clamping block (62), the mounting frame (61) spans a placing groove and is fixed with the top surface of the fixing plate (32), the clamping block (62) is arranged right below the mounting frame (61), a sliding rail is arranged on the inner wall of the placing groove of the fixing plate (32), the guiding direction of the sliding rail is perpendicular to the bottom plate (1), a guiding block (621) is respectively fixed on two side surfaces of the clamping block (62), and the guiding block (621) is slidably arranged on the sliding rail; two fixed pins (622) are connected to the upper portion of the clamping block (62), the upper portion pin heads of the fixed pins (622) penetrate through the mounting frame (61), circular grooves matched with the connectors are formed in the bottom face of the clamping block (62), two fixed pins (622) penetrate through clamping springs (63), one end of each clamping spring (63) abuts against the lower portion of the mounting frame (61), the other end of each clamping spring abuts against the upper portion of the clamping block (62), so that the connectors are pressed on the bottom face of the placing groove by the clamping block (62) under the action of elastic force of the clamping springs (63) when no external force acts, and a lifting handle (64) is connected to the upper portions of the two pins.
4. The concentricity testing fixture for the spiral tie apparatus of claim 3, further comprising:
the concentricity indicating device comprises a battery (11), a light emitting diode (12) and a wire head (13), wherein one end of the battery (11) is arranged on the upper base plate (1) and is electrically connected to the detection plate (31), the detection plate (31) and the connecting pin are made of conductive materials, the anode of the light emitting diode (12) is electrically connected to the wire head (13), the cathode of the light emitting diode is grounded, and the wire head (13) is used for being in contact with the connecting pin during detection.
5. The concentricity inspection tool for the spiral tie device according to any one of claims 2 to 4, wherein the rotation assisting handle (432) is detachably connected with the rotating ring (433), and a jack for inserting the rotation assisting handle (432) is formed in the outer wall of the rotating ring (433).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885598.0A CN107421426B (en) | 2017-09-27 | 2017-09-27 | Concentricity gauge for spiral tie device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885598.0A CN107421426B (en) | 2017-09-27 | 2017-09-27 | Concentricity gauge for spiral tie device |
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| Publication Number | Publication Date |
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| CN107421426A CN107421426A (en) | 2017-12-01 |
| CN107421426B true CN107421426B (en) | 2023-05-09 |
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| CN201710885598.0A Active CN107421426B (en) | 2017-09-27 | 2017-09-27 | Concentricity gauge for spiral tie device |
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| CN117450901B (en) * | 2023-08-30 | 2024-12-17 | 重庆沃亚机械有限公司 | Impeller keyway concentricity detection production line and detection process thereof |
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