JPH08192401A - Sawing machine having crossing tiltable blade - Google Patents

Abstract

PURPOSE: To largely improve the handling convenience by switching a clutch interposed between a support member and an oscillating arm between the position in contact with a stopper and the position for avoiding the contact in cooperation with the oscillating passage of the arm. CONSTITUTION: First, second and third clutch discs 42 and 44 are maintained in a first contact state so long as an oscillating arm 6 does not exceed the releasing angle from a neutral angle. When the arm 6 is oscillated from this state to the side of the neutral angle, the disc 42 is brought into close contact with a first clutch disc 40 to be switched to the positional relation in which it is not brought into contact with a fixed part 6b, and the arm 6 is oscillated to an emergency area side over the neutral angle. On the other hand, when the arm 6 is oscillated from the neutral angle over the releasing angle, the disc 44 is oscillated in a second contact state over the disc 42. When the arm 6 is oscillated from this state to the side of the neutral angle, the disc 42 is retracted this time to be switched to the position where it is brought into contact with the fixed part 6b, and the arm 6 is restricted in the oscillation at the neutral angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saw device in which a saw blade can be tilted in the left-right direction with respect to a support member for supporting a material to be cut.

[0002]

2. Description of the Related Art Actual Kaihei 5-49301, Actual Kaihei 5-49
302 and Japanese Patent Laid-Open No. 6-71602 disclose the structure of a conventional left-right tilt saw device. 1, 2, and 3 show a left-right tilting saw device described in JP-A-6-71602. In the figure, reference numeral 4 denotes a support member for supporting the material to be ground, and a support surface 4a for supporting the material to be cut is formed on the upper surface. Reference numeral 6 in the drawing denotes a swing arm, which is swingable in the left-right direction with respect to the support member 4, as indicated by arrows L and R in FIG. In the figure, 12 indicates a saw blade,
The saw blade 12 is attached to the swing arm 6 via the vertical swing member 10 and the slide bar 8. The blade surface of the saw blade 12 is tilted following the horizontal swing of the swing arm 6. In FIGS. 2 and 3, 14 is a motor which is a drive source for driving the saw blade.

1 to 3, the support member 4 is a turntable rotatable on the base 2, but there is a type in which the support member 4 is fixed. In addition,
In the example of 3, the slide bar 8 and the vertical rocking member 10 are interposed between the saw blade 12 and the rocking arm 6, but the rocking arm 6 does not have the vertical bar rocking member 10 without the slide bar 8. There is also a type in which the saw blade is attached to the slide bar 8 without the vertically swinging arm 10. A saw blade may be directly attached to the swing arm 6. In the last type, the material to be cut is fed over the support surface.

Regardless of the type, the left and right tilt type saw device, as shown in FIG. 3, follows the swing of the swing arm 6 and the saw blade 12 is tilted to the left (12 L), the supporting surface 4 a. It is possible to swing between an angle (12C) orthogonal to and an angle (12R) inclined to the right.

In the left-right tilting saw device, one of the saw blades 12 is normally used as a normal region with a neutral angle perpendicular to the supporting surface 4a interposed therebetween.
The other is used as an emergency area. Now, referring to FIG. 3, the case where the range between the one rocking limit 12L and the neutral angle 12C is the normal range will be described. In the normal state, the saw blade 12 is used in the normal range, and the saw blade 12 is exceptionally used in a special case. Is swung toward the emergency area.

In the case of this left-right tilting saw device, when used at a neutral angle, it is required that the saw blade 12 and the supporting surface 4a form an angle that is orthogonal to each other. For this purpose, a stopper is provided on the support member 4 side so that the stopper comes into contact with the swing arm at the neutral angle from the emergency area side. With this arrangement, as long as it is used in the normal range, the swing arm is swung to the neutral angle side until it abuts the stopper, so that the neutral angle is accurately adjusted.

However, if the swing arm and the stopper are always brought into contact with each other at the neutral angle, they cannot be swung to the emergency area. Therefore, the actual Kaihei 5-493 mentioned above
In the technique described in Japanese Patent Publication No. 02-202, a stopper is attached to a support member so as to be pivotable, and the stopper is pivoted to a position where it abuts against a swinging arm during use in a normal range, and when the stopper is used in an emergency range. The stopper is pivoted to a position that avoids contact with the swing arm. The same action and effect can be obtained even if a member is provided on the side of the swing arm in order to switch between the contacting state and the avoiding state.

[0008]

As described above, according to the conventional technique, the operator manually operates the member for switching between the state where the swing arm and the stopper are in contact with each other and the state where the contact is avoided. I had to operate with. This is inconvenient for the use of this device. In view of this, in the present invention, the left and right tilting saw device is capable of switching between a state in which the abutment is adjusted to a neutral angle and a state in which the abutment can be avoided and the state can be swung into the emergency range only by swinging the swing arm. Is to realize.

[0009]

SUMMARY OF THE INVENTION The present invention provides a support member having a support surface for supporting a material to be cut, a swing arm that can swing in the left-right direction with respect to the support member, and a swing arm thereof. In a conventional left-right tilting saw device including a saw blade that can tilt in the left-right direction following the swing of a moving arm, and a drive source that drives the saw blade, between the supporting member and the swing arm. A clutch is provided, and a stopper for adjusting the saw blade to a swing angle orthogonal to the support surface is provided on the support member, and the clutch is interlocked with the swing progress of the swing arm. Then, it is possible to switch between a position where the stopper is contacted and a position where the contact is avoided. The saw blade and the swing arm may be connected, for example, via a slide bar or a vertical swing member, or may be directly connected. The support member may be the base itself or a turntable.

[0010]

According to the left-right tilting saw device having this structure,
The operator adjusts the tilt angle of the saw blade in conjunction with the swing progress of the swing arm to make contact with the stopper to adjust to a neutral angle, and to avoid contact with the stopper to make it neutral. In order to switch to a state in which swinging over an angle is allowed, the operator only needs to operate the swinging arm, and manually switches the switching member required in the conventional device. No operation is required.

[0011]

According to one aspect of the present invention, there is provided a left-right tilting saw device in which a swing angle of the saw blade orthogonal to the supporting surface is a neutral angle, and one swing angle from the neutral angle is defined as a neutral angle. When the normal range is up to the dynamic limit, the emergency range is between the neutral angle and the other swing limit, and the angle slightly swung from the neutral angle to the normal range is the release angle. ,
The clutch is switched to the contact position as the clutch passes the release angle from one of the swing limit sides and swings to the neutral angle, and swings from the neutral angle to the normal region side within a range not exceeding the release angle. After that, it is switched to the contact avoiding position by the course of swinging to the neutral angle.

[0012]

According to the saw device of this aspect, the swing arm passes through the release angle and swings to the neutral angle during normal use in the normal range. It is switched to the position where it abuts the stopper, and the swing is stopped at the neutral angle. Next, when it is used in the emergency range, it swings toward the normal range within a range not exceeding the release angle and then swings toward the neutral angle side. Then, as the swing progresses, the clutch is switched to a position where it is prevented from coming into contact with the stopper, so that it becomes possible to swing beyond the neutral angle to the emergency region side. Even when it is used again in the normal range, once it exceeds the release angle and swings toward the normal range, it is switched to the position where it comes into contact with the stopper due to the swinging movement toward the neutral angle again. Return to the used state.

[0013]

One preferable means for solving the problems is that the above-mentioned clutch includes a first clutch member that is prevented from rotating toward the support member side, a third clutch member that is prevented from rotating toward the swing arm side, and a third clutch member thereof. The second clutch member includes a first clutch member and a second clutch member that can be brought into and out of contact with the third clutch member. The second clutch member has an abutting portion that abuts the stopper. The second clutch member and the third clutch member are maintained in the first connection state during the progress toward the release angle, and the second clutch member and the third clutch member are maintained by the progress toward the one swing limit side beyond the release angle. The third clutch member is brought into the second connected state, and the third clutch member is disengaged from the second clutch member in the course of going from the first connected state to the neutral angle, and the third clutch member is released from the second connected state to the neutral angle. To Third clutch member by a lapse cow is preferably intended to be connected to the second clutch member.

[0014]

According to this clutch, the clutch is reliably switched in association with the progress of the swing of the swing arm.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment embodying the present invention will be described. The overall structure of this embodiment is almost the same as that shown in FIGS. That is, a turntable is used as the supporting member, and the slide bar 8 and the upper moving rocking member 10 are interposed between the rocking arm 6 and the saw blade 12.
However, these are matters specific to this embodiment, and the present invention can also be embodied in a type in which the supporting member is fixed. Further, a slide bar 8 is provided between the swing arm 6 and the saw blade 12.
Only the vertical swinging member 10 may be interposed, or the saw blade 12 may be directly attached to the swinging arm 6. In the case of a type that can be directly attached, the material to be cut can be cut or grooved by sliding the material to be cut on a saw blade. After all, the present embodiment can be generally embodied in which the saw blade tilts following the swing of the swing arm.

The relationship between the support member 4 and the swing arm 6 will be described below with reference to FIGS. 4 and 5. 4b in FIGS. 4 and 5
Indicates a rear end portion of the support member 4, and a pin 5 serving as a swing center is fixed to the rear end portion in a cantilever manner. A cylindrical wall 4d surrounding the pin 5 is formed at the rear end of the support member 4, and a circular guide surface 4 concentric with the pin 5 is formed on the rear end face.
c is formed.

A boss 6a to be inserted into the pin 5 is formed at the base of the swing arm 6, and a circumferential guide surface 4c is formed.
A circumferential guided surface 6c is formed in sliding contact with the guide surface 6c.
With these, the swing arm 6 can swing about the pin 5 as the swing center.

A screw 16 is formed at the rear end of the pin 5, and a nut 18 is provided on the screw 16 via a washer 24.
Are screwed together. The nut 18 is a screw 26 and a handle 22
The rotation arm 22 is fixed to the supporting member 4 by rotating the handle 22 to move the nut 18 forward and pressing the washer 24 against the rear surface of the rotation arm 6. Has become.

Inside the base portion of the swing arm 6, three fixing portions 6b, 6d and 6e shown in FIGS. 4 and 5 are formed. The shape of the fixing portions 6b, 6d, 6e along the pin 5 is well shown in FIG.

The wall 4d of the support member 4 is provided with three stoppers 28, 30, 32 which are well shown in FIG. The stopper 28 projects from the emergency area side to the normal area side, and is for adjusting a neutral angle by contact with a stopper protruding piece 42a of a second clutch disc 42 described later. The stopper 32 comes into contact with one surface 6d2 of the fixed portion 6d to regulate one swing limit on the normal region side.
The stopper 30 comes into contact with the other surface 6d1 of the fixed portion 6d to regulate the other swing limit on the emergency region side. The respective stoppers 28, 30, 32 are arranged such that the saw blade 12 has an angle (90 °) orthogonal to the support surface 4a, an angle of 45 ° to the left, and an inclination angle of 45 ° to the right. Each of them can be adjusted by screwing in and out of the wall 4d.

As best shown in FIG. 4, a clutch 39 is provided between the support member 4 and the swing arm 6. The clutch 39 includes three clutch discs 40 and 4
The main components are 2,44.

The first clutch disc 40 is the support member 4
It is stopped by a screw 41. The first clutch disc 40 is immovable in the axial direction, and the support member 4
It may be directly formed on. The third clutch disc 44 is
It has a groove 44d for preventing rotation by the fixed portion 6e and is prevented from rotating with respect to the swing arm 6. However, it is movable in the axial direction. The second clutch disc 42 is sandwiched between the first clutch disc 40 and the third clutch disc 44. A stopper contact piece 42a extends from the second clutch disc 42, and this contact piece 42a is rotatable between the stopper 28, the contact wall 4e, and the fixed portion 6b, as shown in FIG. . When the second clutch disc 42 moves forward until it comes into contact with the first clutch disc 40, the stopper protruding piece 4
2a is in a positional relationship in which it can freely rotate in front of the fixed portion 6b. FIG. 4 shows a state in which the second clutch disc 42 is retracted (meaning that it is moved to the left in the drawing), and it is shown that the second clutch disc 42 is in a positional relationship of abutting on the side surface of the fixed portion 6b.

Three clutch disks 40, 42, 44
Are coaxial with the pin 5 and are urged toward each other by a spring 46. Incidentally, reference numeral 48 in the figure denotes an E-ring for restricting the retracted position of the spring 46. The surface of the first clutch disc 40 on the second clutch disc side, the second disc 42
On both sides of the third clutch disc 44 and the surface of the third clutch disc 44 on the second clutch disc side, respectively.
42c and 44c are formed.

Next, the operation of the clutch 39 will be described with reference to FIG. For convenience of description, the description will be started from the state in which the swing arm 6 is used in the normal range and is swung to the neutral angle by passing through the release angle (FIG. 6). 6A and 6B are views showing the rotation phenomenon converted into a sliding phenomenon for the purpose of explanation. It can be seen that the movement of the swing arm 6 to the right in the figure means that the swing arm 6 is rotated clockwise in FIG. Correspond.

As shown in FIG. 6, when the neutral angle is adjusted, the stopper contact piece 42 of the second clutch disc 42 is adjusted.
The a comes into contact with the stopper 28. Second clutch disc 4
The fixed portion 6 of the swing arm 6 is attached to the stopper contact piece 42a
b is abutted and the swing arm 6 is prohibited from swinging beyond the neutral angle. The stopper contact piece 42a and the fixed portion 6
The abutment point of b is shown as 42d in FIGS. This state is shown in FIGS.

6 to 15 show the action of the clutch when the swing arm 6 is used in the normal range.
FIG. 7 shows a state in which the swing arm 6 starts to swing slightly from the neutral angle to the normal range. In this case, the fixed part 6
b moves to the left (counterclockwise rotation in FIG. 5), and the third clutch disc 44 also moves to the left ((counterclockwise rotation in FIG. 5), thereby meshing with the third clutch disc 44. The second clutch disc 42 also moves to the left, and at this time, due to the inclination of the teeth 42b of the second clutch disc 42 and the teeth 40b of the first clutch disc 40,
The second clutch disc 42 is the first clutch disc 40.
Approach the side. Then, when the second clutch disc 42 is swung to the state shown in FIG. 8, the second clutch disc 42 comes into close contact with the first clutch disc 40, and at the same time, the stopper abutment piece 42a of the second clutch disc 42 comes into contact with the abutment wall 4e (see also FIG. 5). Abut. In the figure, the point of contact with the contact wall 4e is shown as 42e. This state is shown in FIGS. 26 and 27. When the swing arm 6 is swung, the third clutch disc 44, which is prevented from rotating by the fixing portion 6e of the swing arm 6, is moved to the second clutch disc 4 as shown in FIG.
Start to get over the clutch teeth for 2. 9 corresponds to the release angle, and when the swing arm 6 is further swung to the left (rotation in the counterclockwise direction in FIG. 5) beyond this, the second clutch disc 42 and the third clutch disc 44 move. The connection relationship is as shown in FIG. The engagement (connection) relationship of the second and third clutch discs is switched between FIG. 8 and FIG. The state of FIG. 8 shows that the second and third clutch discs are in the first connected state, and the state of FIG. 10 shows that the second and third clutch discs have been switched to the second connected state. Is shown.

FIG. 11 shows a state in which the swing arm 6 continues to swing further to the left, and finally the surface 6d2 of the fixed portion 6d contacts the stopper 32 to prohibit further swinging to the left. . FIG. 11 shows one swing limit in the normal range.
What is indicated by a virtual line in FIG. 28 corresponds to this state. The solid line in FIG. 28 corresponds to that in FIG.

Now, FIG. 12 shows a state in which the swing arm 6 starts swinging from the left swing limit to the side of the neutral angle.
In this case, the inclination angle of the clutch teeth 40b, 42b between the first and second clutch disks 40, 42 is determined by the clutch teeth 42c, 44c between the second and third clutch disks 42, 44.
Since it is set more gently than the inclination angle of
The third clutch discs 42 and 44 are prevented from rotating, and the clutch teeth between the first and second clutch discs 40 and 42 start to get over (FIG. 13). When the swing arm is further swung to the neutral angle side, the second clutch disc 42 rides on the first clutch disc 40, and the second clutch disc 4
2 moves backward (moves upward in the drawing) (FIG. 14). Further, at this time, the stopper abutment piece 42a abuts the stopper 28 to inhibit further rotation of the second clutch disc 42. This state is shown in FIG. When the swing arm 6 is further swung to the neutral angle side in this state, the swing arm 6 is held in a state where the second clutch disc 42 is prevented from rotating.
Then, the third clutch disc 44 swings, and the third clutch disc 44 rides over the clutch teeth of the second clutch disc 42 (FIG. 15). When the swing arm 6 is further swung to the neutral angle side, the third clutch disc 44 gets over the clutch teeth of the second clutch disc 42 and the first connection state shown in FIG. 6 (the first connection state shown in FIGS. 6 to 8). The connection state between the second and third clutch disks 42 and 44) is restored. Further, the fixed portion 6b contacts the stopper contact piece 42a (FIG. 6).
At this time, the stopper abutment piece 42a abuts the stopper 28 and is prevented from further swinging. Since the fixed portion 6b comes into abutment with the stopper abutment piece 42a, the stopper abutment piece 42a does not move further. The swing is prohibited and the swing arm 6 is adjusted to the neutral angle. As a result, the state shown in FIGS. 4 and 5 is restored.

As shown in FIGS. 8 to 10, the swing arm 6 is provided.
Is swung toward the normal range beyond the release angle, the connection state of the second and third clutch disks 42, 44 is switched from the first connection state to the second connection state, and the swing arm is moved from this second connection state. When 6 is swung to the neutral angle side, the second clutch disc 42 retracts as shown in FIG. 13, and as a result of this retraction, the stopper contact piece 42a of the second clutch disc 42 is moved.
Is switched to a position where it comes into contact with the fixed portion 6b.

On the other hand, FIGS. 16 to 25 show the action of the clutch when it is used in the emergency area. FIG.
Shows a state exactly the same as in FIG. 6, and the swing arm 6 is in contact with the stopper 28 and is set at a neutral angle. In this state, if the second clutch disc 42 is slightly swung toward the normal range, the second clutch disc 42 is pushed out toward the first clutch disc 40 (FIG. 17, which is the same as FIG. 8). FIG. 17 shows a state in which the swing arm 6 is slightly swung to the normal region side within the range where the release angle is not exceeded. When the swing arm 6 is swung again toward the neutral angle side from the place where the release angle is not exceeded, FIG. Is obtained.

FIG. 18 shows the second and third clutch discs 4.
2 and 44 show a state when the first and second clutch discs 40 and 42 are swung to the neutral angle side from the first connected state shown in FIGS. 8 and 17. Since the inclination angles of 40b and 42b are set to be tighter than the inclination angles of the clutch teeth 42c and 44c between the second and third clutch discs 42 and 44, the rotation between the first and second clutch discs 40 and 42 is increased. In the stopped state, the third
The clutch disc 44 begins to get over the clutch teeth of the second clutch disc 42 (FIG. 18). That is, the second
The clutch disc 42 does not retract, and the stopper abutment piece 42a of the second clutch disc 42 does not abut the fixed portion 6b. Therefore, the swing arm 6 can swing independently of the second clutch disc 42, and can swing beyond the neutral angle toward the emergency zone (FIG. 1).
8 and FIGS. 30 and 31).

FIG. 19 shows how the other swing limit on the emergency zone side is regulated, and the surface 6d1 of the fixed portion 6d contacts the stopper 30 to prevent further swing. This is shown by the phantom line in FIG. 19 to 21 show
After being switched to the emergency zone side, the state during swinging within the swing limit and the release angle on the emergency zone side is shown, and the operation between FIGS. 19 and 21 is bidirectional. It is repeatedly executed.

FIG. 22 shows a state in which the swing angle is exceeded to the normal range side, which corresponds to the state shown in FIG. At this time, clutch tooth overrun occurs between the second and third clutch discs 42 and 44, and the second and third clutch discs 42 and 44 are switched to the second connected state (FIGS. 22 to 23). After FIG. 23, the action that occurs during use in the normal range is shown. After the release angle is exceeded (after switching from FIG. 22 to FIG. 23), when the swing arm is swung to the neutral side, This time, the second clutch disc 42 rides on the first clutch disc 40,
The positional relationship is such that the fixed portion 6b abuts on the stopper abutment piece 42a. For this reason, when returning to the neutral angle, FIG.
Return to the state of, and further swinging is prohibited at the neutral angle.

The above phenomenon can be summarized as follows. First, while the release angle is not exceeded from the neutral angle, the second and third clutch discs are maintained in the first connection state (see FIGS. 16 and 1).
7 and the connection state shown in FIGS. 6 to 8), and when the swing arm 6 is swung to the neutral angle side from this state, the second clutch disc 42 comes into close contact with the first clutch disc 40 and the fixing portion. The swing arm 6 can be swung to the emergency area side beyond the neutral angle by switching to a positional relationship in which the swing arm 6 does not abut.

On the other hand, when swinging from the neutral angle to beyond the release angle, the third clutch disc 44 gets over the second clutch disc 42 and becomes the second connected state (FIGS. 9 to 10).
22 to 23), when the swing arm 6 is swung to the neutral angle side from this state, the second clutch disc 42 is retracted to the position where it abuts the fixed portion 6b. The swing arm 6 is restricted from swinging at a neutral angle.

This phenomenon is realized by the inclination of the clutch teeth between the first, second and third clutch discs, and in the first connected state (see FIGS. 8 and 17), the first
・ The inclination angle of the clutch teeth between the second clutch discs is the second
The second clutch disc 4 because the inclination angle of the clutch teeth between the third clutch discs is set tighter.
2 is switched to a positional relationship where it does not abut the fixed portion, while in the second connection state (FIGS. 23, 10, 12, and 13), the inclination angle of the clutch teeth between the first and second clutch discs is Since the inclination angle of the clutch teeth between the second and third clutch discs is set to be gentler, the positional relationship in which the second clutch disc 42 contacts the fixed portion is switched.

In the case of this embodiment, FIGS.
When returning to the neutral angle before reaching, that is, when returning to the neutral angle before reaching FIG.
The fixed portion 6b of the swing arm 6 and the second clutch disc 42
The contact of the stopper contact piece 42a is not avoided, and the stopper contact piece 42a is stopped at the neutral angle. That is, even if it swings slightly from the neutral angle to the normal range side and then returns to the neutral angle, it does not go to the emergency range side, swings once until it approaches the release angle, and then returns to the neutral angle. It is possible to swing to the emergency area side. This is because it prevents the user from inadvertently starting to swing to the emergency area side while performing the operation for adjusting to the neutral angle when using it on the normal area side. This measure is not always necessary,
At the stage of FIG. 7, the contact between the second clutch disc 42 and the fixed portion 6b may be avoided. By doing so, it becomes possible to swing the member to the emergency region side by swinging it slightly to the normal region side and then returning to the neutral angle.

The clutch structure in the embodiments detailed above is merely an example, and the present invention can be embodied in various other modes. Further, in the above description, the case where the saw blade is a circular saw has been described, but the present invention is not limited to the circular saw, for example, a band saw,
It can also be used for chainsaws or reciprocating saws. Further, the saw here is not limited to a saw for woodworking, but includes a grindstone for metal cutting.

[0039]

According to the present invention, a state in which the swing arm is prevented from swinging further toward the emergency zone at the neutral angle,
The prohibition state is released and the state in which it is allowed to swing toward the emergency area is switched depending on the swinging movement of the swing arm, so that the operator can switch only by operating the swing arm. The trouble of manually switching the switching member, which was required in the conventional device, is unnecessary. Therefore, the usability of the device is significantly improved. Moreover, since the clutch is housed in the support member and the swing arm, chips and the like do not enter during the work, and malfunctions and the like can be prevented.

[Brief description of drawings]

FIG. 1 is a side view of a conventional left and right tilt saw device.

FIG. 2 is a plan view of a conventional left and right tilt saw device.

FIG. 3 is a front view of a conventional left and right tilt saw device.

FIG. 4 is a partially cutaway side view of a swing arm base portion of the present embodiment.

FIG. 5 is a partial front view of the swing arm base portion of the present embodiment.

FIG. 6 is a diagram for explaining the action of the clutch.

FIG. 7 is a diagram for explaining the action of the clutch.

FIG. 8 is a diagram for explaining the action of the clutch.

FIG. 9 is a diagram for explaining the action of the clutch.

FIG. 10 is a diagram for explaining the action of the clutch.

FIG. 11 is a diagram for explaining the action of the clutch.

FIG. 12 is a view for explaining the action of the clutch.

FIG. 13 is a diagram for explaining the action of the clutch.

FIG. 14 is a diagram for explaining the action of the clutch.

FIG. 15 is a diagram for explaining the action of the clutch.

FIG. 16 is a diagram for explaining the action of the clutch.

FIG. 17 is a diagram for explaining the action of the clutch.

FIG. 18 is a view for explaining the action of the clutch.

FIG. 19 is a diagram for explaining the action of the clutch.

FIG. 20 is a view for explaining the action of the clutch.

FIG. 21 is a view for explaining the action of the clutch.

FIG. 22 is a view for explaining the action of the clutch.

FIG. 23 is a view for explaining the action of the clutch.

FIG. 24 is a view for explaining the action of the clutch.

FIG. 25 is a view for explaining the action of the clutch.

26 is a diagram corresponding to FIG. 5 in FIG.

27 is a diagram corresponding to FIG. 4 in FIG. 8;

FIG. 28 is a diagram corresponding to FIG. 5 in FIGS. 10 and 11;

29 is a diagram corresponding to FIG. 5 in FIG.

FIG. 30 is a view corresponding to FIG. 5 in FIGS. 18 and 19;

FIG. 31 is a diagram corresponding to FIG. 4 in FIGS. 18 and 19;

[Explanation of Codes] 4 Support Member 4a Support Surface 6 Swing Arm 12 Saw Blade 14 Drive Source 39 Clutch 40 First Clutch Disc 42 Second Clutch Disc 44 Third Clutch Disc

Claims (3)

[Claims] 1. A support member having a support surface for supporting a material to be cut, a swing arm capable of swinging in the left-right direction with respect to the support member, and following the swing of the swing arm. A left-right tilting saw device including a saw blade that can tilt in the left-right direction and a drive source that drives the saw blade, wherein a clutch is interposed between the support member and the swing arm, The member is provided with a stopper for adjusting the saw blade to a swing angle orthogonal to the support surface, and the clutch is brought into contact with the stopper in association with the swing progress of the swing arm. A left-right tilting saw device characterized by being switchable between a position and a position for avoiding contact. 2. The left and right inclined saw device according to claim 1, wherein the saw blade has a swing angle orthogonal to the support surface as a neutral angle,
From the neutral angle to the one swing limit, the normal range,
When the emergency range is from the neutral angle to the other swing limit, and the angle slightly swung from the neutral angle to the normal range is the release angle, the clutch is configured to swing the one swing It switches to the contact position as it passes through the release angle from the limit side and swings to the neutral angle, swings from the neutral angle to the normal range side within the range not exceeding the release angle, and then swings to the neutral angle. A left-right tilting saw device characterized by being switched to a contact avoidance position depending on the progress. 3. The left and right tilt saw device according to claim 2, wherein the clutch is a first rotation stop member that is prevented from rotating toward the support member.
And a second clutch member that is rotatable between the first and third clutch members, and the second clutch member is provided between the first and third clutch members. An abutting portion that abuts the stopper is formed on the clutch member, and the second clutch member and the third clutch member are maintained in the first connected state during the progress from the neutral angle to the release angle. The second clutch member and the third clutch member are brought into the second connected state by the passage of the release angle beyond the one swing limit side, and the second clutch member and the third clutch member are brought by the passage of the neutral angle from the first connected state. The three-clutch member is disengaged from the second clutch member, and the third clutch member is connected to the second clutch member according to a progress from the second connected state toward the neutral angle. Lateral inclination saws device to.