JP3345205B2 - Left and right tilt type saw device - Google Patents

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 left and right with respect to a support member for supporting a workpiece.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 5-49301 and 5-49301.
302 and JP-A-6-71602 show the structure of a conventional left-right inclined saw device. FIGS. 1, 2, and 3 show a left-right inclined saw device described in JP-A-6-71602. In the figure, reference numeral 4 denotes a support member for supporting the workpiece, and a support surface 4a for supporting the workpiece is formed on the upper surface. In the drawing, reference numeral 6 denotes a swing arm, which can swing in the left-right direction with respect to the support member 4 as shown 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 inclined following the right and left swing of the swing arm 6. In FIGS. 2 and 3, reference numeral 14 denotes a motor as a drive source for driving the saw blade.

In FIGS. 1 to 3, the support member 4 is a turntable rotatable on the base 2, but there is also a type in which the support member 4 is fixed. In addition, FIG.
In the example of 3, the slide bar 8 and the vertical swing member 10 are interposed between the saw blade 12 and the swing arm 6, but the vertical swing member 10 is mounted on the swing arm 6 without the slide bar 8. There is also a type in which a saw blade is mounted on the slide bar 8 without the vertically oscillating arm 10 and a type in which the saw blade is mounted on the slide bar 8. A saw blade may be directly attached to the swing arm 6. In the last type, the workpiece is fed over the support surface.

Regardless of the type, as shown in FIG. 3, the right-and-left tilt type saw device follows the swing of the swing arm 6 so that the saw blade 12 tilts to the left (12L) and the support surface 4a. Is swingable between an angle (12C) perpendicular to the angle (12C) and an angle (12R) inclined rightward.

[0005] In the left-right inclined saw device, usually, one of the saw blades 12 is set as a normal area with a neutral angle interposed between the support surface 4a and a neutral angle.
The other is used as an emergency area. Referring now to FIG. 3, a description will be given of a case where the normal range is between the one swing limit 12L and the neutral angle 12C. In a 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 the left-right inclined saw device, when used at a neutral angle, it is required that the angle between the saw blade 12 and the support surface 4a be exactly orthogonal. For this purpose, a stopper is provided on the support member 4 side, and this stopper comes into contact with the swing arm from the emergency area side at a neutral angle. With this configuration, as long as the swing arm is used in the normal range, the swing arm is swung to the neutral angle side until it comes into contact with the stopper, so that the neutral angle is accurately adjusted.

However, if the swing arm and the stopper are always brought into contact at a neutral angle, the swing arm cannot be swung to the emergency area. Therefore, the aforementioned Japanese Utility Model Laid-Open No. 5-493.
According to the technique described in Japanese Patent Application Publication No. 02-203, a stopper is pivotally attached to a support member, and when the stopper is used in a normal use area, the stopper is turned to a position where it comes into contact with a swing arm. The stopper is turned to a position where the stopper does not come into contact with the swing arm. The same operation and effect can be obtained even if a member is provided on the side of the swing arm for switching between a contact state and a contact avoidance state.

[0008]

As described above, in the prior art, when switching between a state in which the swing arm and the stopper abut and a state in which the abutment is avoided, the operator manually operates a member for that purpose. Had to be operated.
This is inconvenient for use of this device. Therefore, in the present invention, a left-right inclined saw device capable of switching between a state in which the contact angle is adjusted to a neutral angle only by the swing operation of the swing arm and a state in which the contact can be avoided and the emergency angle area can be swung. It is intended to realize.

[0009]

SUMMARY OF THE INVENTION The present invention provides a support member having a support surface for supporting a workpiece, a swing arm capable of swinging left and right with respect to the support member, and a swing arm. In a conventional left-right tilting saw device including a saw blade that can be tilted in the left-right direction following the swing of the moving arm, and a drive source that drives the saw blade, between the support member and the swing arm A clutch is interposed, 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 of the swing arm. Then, the position is switched between a position where the stopper comes into contact with the stopper 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. Further, the support member may be the base itself or a turntable.

[0010]

According to the left-right inclined saw device having this configuration,
The operator adjusts the neutral angle by contacting the stopper in conjunction with the swinging movement of the swing arm operated by the operator to adjust the inclination angle of the saw blade, and the neutral state avoiding the contact with the stopper In order to be able to switch between the states in which swinging beyond the angle is permitted, the operator only needs to operate the swinging arm, and manually switch 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 tilt type saw apparatus, wherein a swing angle at which the saw blade is perpendicular to the support surface is set to a neutral angle, and one of the swing angles is determined from the neutral angle. When the range up to the movement limit is the normal range, the range from the neutral angle to the other swing limit is the emergency range, and the angle slightly swinging from the neutral angle toward the normal range is the release angle. ,
The clutch is switched to the abutment position as the clutch passes through the release angle from the one swing limit side and swings to the neutral angle, and swings from the neutral angle to the normal range without exceeding the release angle. After that, it is switched to the contact avoidance position by the process of swinging to the neutral angle.

[0012]

According to the saw device of this aspect, during normal use in the normal range, the swing arm passes through the release angle and swings to the neutral angle, so that the clutch moves due to its swing process. The position is switched to a position where the stopper comes into contact with the stopper, and the swing is stopped at the neutral angle. Next, when used in an emergency area, it swings to the neutral angle side after swinging within the range not exceeding the release angle toward the normal area. Then, as the swing progresses, the clutch is switched to a position where contact with the stopper is avoided, so that the clutch can swing toward the emergency area beyond the neutral angle. Also, when using in the service area again, once it swings to the service area side beyond the release angle, it is switched to the position where it comes into contact with the stopper due to the swing progress toward the neutral angle again, and naturally within the service area. Returns to the state of use.

[0013]

One of the above-mentioned clutches comprises a first clutch member which is detented on the support member side, a third clutch member which is detented on the swing arm side, and a third clutch member. The first and third clutch members are constituted by a second clutch member which can be freely contacted to and separated from the first clutch member and the third clutch member. The second clutch member has a contact portion which is in contact with the stopper. During the course toward the release angle, the second clutch member and the third clutch member are maintained in the first connected state, and the second clutch member and the third clutch member are connected to each other by the course toward the one swing limit side beyond the release angle. The third clutch member is in a second connected state, and the third clutch member is disengaged from the second clutch member as the vehicle moves from the first connected state toward the neutral angle, and the neutral angle is changed from the second connected state. 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 conjunction with the swinging progress of the swing arm.

[0015]

Next, an embodiment of the present invention will be described. The overall configuration of this embodiment is almost the same as that shown in FIGS. That is, a turntable is used as the support member, and the slide bar 8 and the vertical swing member 10 are interposed between the swing 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 support member is fixed. 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 workpiece can be cut or grooved by sliding the workpiece on a saw blade. As a result, the present embodiment can be generally embodied in which the saw blade is inclined 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. In FIGS. 4 and 5, 4b
Denotes 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 circumferential guide surface 4 concentric with the pin 5 is formed on the rear end surface.
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 so as to be in sliding contact with.
Thus, the swing arm 6 can swing around 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 attached to the screw 16 via a washer 24.
Is screwed. The nut 18 is screwed 26 to the handle 22
Of the swing arm 6 can be fixed to the support member 4 by rotating the handle 22 to advance the nut 18 and pressing the washer 24 against the rear surface of the swing arm 6. It has become.

Inside the base 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 pins 5 is well shown in FIG.

The wall 4d of the support member 4 is provided with three stoppers 28, 30, and 32, which are well shown in FIG. The stopper 28 protrudes from the emergency area to the normal area, and is used to adjust a neutral angle by abutting a stopper projecting piece 42a of a second clutch disc 42 described later. The stopper 32 is in contact with one surface 6d2 of the fixing portion 6d to regulate one swing limit on the normal use area side.
The stopper 30 is in contact with the other surface 6d1 of the fixed portion 6d to regulate the other swing limit on the emergency area side. Each of the stoppers 28, 30, and 32 has an angle (90 °) orthogonal to the support surface 4a, an angle of 45 ° to the left, and an angle of 45 ° to the right with respect to the support surface 4a. Each can be adjusted by screwing in and out of the wall 4d.

As shown in FIG. 4, a clutch 39 is provided between the support member 4 and the swing arm 6. The clutch 39 has three clutch disks 40 and 4
2, 44 are mainly composed.

The first clutch disk 40 includes a support member 4
Is stopped by a screw 41. The first clutch disc 40 is also stationary in the axial direction,
May be formed directly. The third clutch disk 44
It has a groove 44d for preventing rotation by the fixing 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 disk 42 is sandwiched between the first clutch disk 40 and the third clutch disk 44. A stopper contact piece 42a protrudes 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 projection piece 4
Reference numeral 2a denotes a positional relationship in which the front of the fixed portion 6b can freely rotate. FIG. 4 shows a state in which the second clutch disc 42 has retreated (moves to the left in the drawing), and shows that the second clutch disc 42 is in a positional relationship in which it comes into contact with the side surface of the fixing portion 6b.

The three clutch disks 40, 42, 44
Are coaxial with the pin 5 and are urged by the spring 46 toward the mutually approaching side. In the drawing, reference numeral 48 denotes an E-ring that regulates the retreat position of the spring 46. The surface of the first clutch disc 40 on the second clutch disc side, the second disc 42
Of the clutch teeth 40b, 42b,
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 a state in which the swing arm 6 has been used in the normal range and has been swung to the neutral angle through the release angle (FIG. 6). FIG. 6 and subsequent figures are diagrams in which the rotation phenomenon is converted into a slide phenomenon for the sake of explanation. Moving the swing arm 6 rightward in the figure means turning the swing arm 6 clockwise in FIG. Corresponding.

As shown in FIG. 6, when adjusting to the neutral angle, the stopper contact piece 42 of the second clutch disc 42 is used.
a contacts the stopper 28. Second clutch disc 4
The fixing portion 6 of the swing arm 6 is
b abuts, and the swing arm 6 is prohibited from swinging beyond the neutral angle. The stopper contact piece 42a and the fixing portion 6
The contact point of b is shown as 42d in FIGS. This state is shown in FIGS.

FIGS. 6 to 15 show the operation of the clutch when the swing arm 6 is used in a normal range.
FIG. 7 shows a state where the swing arm 6 has begun to slightly swing from the neutral angle toward the normal use area. In this case, the fixing part 6
b moves leftward (turns counterclockwise in FIG. 5), and the third clutch disc 44 also moves leftward ( turns counterclockwise in FIG. 5), whereby the third clutch disc 44 is engaged with the third clutch disc 44. The second clutch disc 42 also moves to the left. At this time, 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. When swinging 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 contact piece 42a of the second clutch disc 42 is brought into contact with the contact wall 4e (see also FIG. 5). Abut. In the drawing, 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 still swung, as shown in FIG. 9, the third clutch disc 44, which is prevented from rotating by the fixing portion 6 e of the swing arm 6, is moved to the second clutch disc 4.
Begin to get over the clutch teeth for 2. FIG. 9 corresponds to the release angle, and when the swing arm 6 is further swung to the left (counterclockwise rotation in FIG. 5) beyond this angle, the second clutch disc 42 and the third clutch disc 44 The connection relationship is as shown in FIG. The engagement (connection) relationship between the second and third clutch disks is switched between FIG. 8 and FIG. The state in FIG. 8 indicates that the second and third clutch disks are in the first connection state, and the state in FIG. 10 indicates that the second and third clutch disks have been switched to the second connection state. Is shown.

FIG. 11 shows a state in which the swing arm 6 further swings to the left. Finally, when the surface 6d2 of the fixed portion 6d contacts the stopper 32, further swinging to the left is prohibited. . FIG. 11 shows one swing limit of the service area.
What is indicated by a virtual line in FIG. 28 corresponds to this state. Note that the solid line in FIG. 28 corresponds to that in FIG.

FIG. 12 shows a state where the swing arm 6 starts swinging from the left swing limit to the neutral angle side.
In this case, the inclination angle of the clutch teeth 40b, 42b between the first and second clutch discs 40, 42 becomes smaller than the clutch teeth 42c, 44c between the second and third clutch discs 42, 44.
Is set to be gentler than the inclination angle of
The rotation between the third clutch disks 42 and 44 is stopped, and the clutch teeth between the first and second clutch disks 40 and 42 start to get over (FIG. 13). When the swing arm further swings 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 figure) (FIG. 14). At this time, the stopper abutting piece 42a abuts on the stopper 28 to prohibit the further rotation of the second clutch disc 42. This state is shown in FIG. When the swing arm 6 is further swung toward the neutral angle side in this state, the swing arm 6 is stopped in a state where the second clutch disc 42 is prevented from rotating.
And the third clutch disk 44 swings, and the third clutch disk 44 gets over the clutch teeth of the second clutch disk 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). (2, the connection state between the third clutch disks 42 and 44). Further, the fixing portion 6b comes into contact with the stopper contact piece 42a (FIG. 6).
At this time, the stopper abutting piece 42a abuts on the stopper 28 to prevent further swinging, and the fixing portion 6b abuts on the stopper abutting piece 42a. The swing is prohibited, and the swing arm 6 is adjusted to the neutral angle. As a result, the state returns to the state shown in FIGS.

As shown in FIGS. 8 to 10, the swing arm 6
Swinging beyond the release angle toward the service area, the connection state of the second and third clutch disks 42 and 44 is switched from the first connection state to the second connection state, and the swing arm is moved from the second connection state. When the second clutch disc 42 swings toward the neutral angle side, the second clutch disc 42 retreats as shown in FIG. 13, and as a result of this retraction, the stopper contact piece 42a of the second clutch disc 42
Is switched to a position where it contacts the fixing portion 6b.

FIGS. 16 to 25 show the operation of the clutch when used in an emergency area. FIG.
6 shows a state completely similar to that of FIG. 6, in which the swing arm 6 is in contact with the stopper 28 and is at a neutral angle. In this state, when the second clutch disc 42 is slightly swung toward the service area, the second clutch disc 42 is pushed out toward the first clutch disc 40 (FIG. 17, which is equivalent to FIG. 8). FIG. 17 shows a state in which the swing arm 6 is slightly swung toward the normal use area within a range not exceeding the release angle. When the swing arm 6 is swung again to the neutral angle side from a place not exceeding the release angle, FIG. Is obtained.

FIG. 18 shows the second and third clutch disks 4.
FIGS. 2 and 44 show the state where the first and second clutch disks 40 and 42 are pivoted from the first connection state shown in FIGS. 8 and 17 to the neutral angle side. Since the inclination angles of 40b and 42b are set to be steeper than the inclination angles of the clutch teeth 42c and 44c between the second and third clutch disks 42 and 44, the rotation between the first and second clutch disks 40 and 42 is performed. In the stopped state, the third
The clutch disk 44 starts to get over the clutch teeth of the second clutch disk 42 (FIG. 18). That is, the second
The clutch disc 42 does not retreat, and the stopper contact piece 42a of the second clutch disc 42 does not contact the fixing 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 area (FIG. 1).
8 and FIGS. 30, 31).

FIG. 19 shows a state in which the other swing limit on the emergency area side is regulated. The surface 6d1 of the fixing portion 6d abuts on the stopper 30, and further swing is prohibited. This is shown by the phantom line in FIG. FIG. 19 to FIG.
FIG. 19 shows a state in which the device is once switched to the emergency area and swings within a range not exceeding the swing limit and the release angle of the emergency area, and the operation between FIGS. 19 to 21 is bidirectional. It is executed repeatedly.

FIG. 22 shows a state of swinging over the release angle to the side of the service area, which corresponds to the state of FIG. At this time, the clutch teeth cross over between the second and third clutch disks 42 and 44, and the connection between the second and third clutch disks 42 and 44 is switched to the second connection state (FIGS. 22 to 23). After FIG. 23, the action that occurs during use in the normal range is shown. After once exceeding the release angle (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 and the second clutch disc 42
Is switched to the positional relationship in which the fixing portion 6b abuts on the stopper abutting piece 42a. For this reason, when returning to the neutral angle, FIG.
And further swinging at the neutral angle is prohibited.

The above phenomenon is summarized as follows. First, while not exceeding the release angle from the neutral angle, the first and second clutch disks 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 toward the neutral angle side from this state, the second clutch disc 42 comes into close contact with the first clutch disc 40 and the fixed portion 6b, the swing arm 6 can swing toward the emergency area side beyond the neutral angle.

On the other hand, when swinging from the neutral angle to over the release angle, the third clutch disk 44 gets over the second clutch disk 42 and is brought into the second connected state (FIGS. 9 to 10).
22 to 23), when the swing arm 6 is swung toward the neutral angle side from this state, the second clutch disc 42 is now retracted and switched to a position where it comes into contact with the fixed portion 6b. The swing of the swing arm 6 is regulated at a neutral angle.

This phenomenon is realized by the inclination of the clutch teeth between the first, second and third clutch disks, and in the first connection state (see FIGS. 8 and 17),
The inclination angle of the clutch teeth between the second clutch discs is the second
The second clutch disc 4 is set to be steeper than the inclination angle of the clutch teeth between the third clutch discs 4
2 is switched to a positional relationship in which it does not come into contact with 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 disks is reduced. Since the inclination angle of the clutch teeth between the second and third clutch disks is set to be gentler, the positional relationship where the second clutch disk 42 comes into contact with the fixed portion is switched.

In the case of this embodiment, FIGS.
When returning to the neutral angle before reaching, that is, when returning from FIG. 16 to FIG. 7 and returning to the neutral angle before reaching FIG.
Fixed portion 6b of swing arm 6 and second clutch disc 42
Abutment of the stopper abutting piece 42a is not avoided, and is stopped at a neutral angle. In other words, even if it swings very slightly from the neutral angle to the service area and then returns to the neutral angle, it does not move to the emergency area side, but once swings to the release angle and then returns to the neutral angle, it is the first time It can swing to the emergency area side. This is to prevent the user from inadvertently swinging to the emergency area while performing the operation for adjusting to the neutral angle when the apparatus is used on the normal area. This is not necessary,
The contact between the second clutch disk 42 and the fixed portion 6b may be avoided at the stage shown in FIG. By doing so, it is possible to swing to the emergency area side by returning to the neutral angle after slightly swinging to the service area side.

The clutch structure in the embodiment described in detail above is merely an example, and the present invention can be embodied in various other aspects. In the above description, the case where the saw blade is a circular saw has been described.
It can also be used for a chain saw or a reciprocating saw. The saw here is not limited to a saw for woodworking, but also includes a grindstone for metal cutting.

[0039]

According to the present invention, a state in which the swing arm is prevented from further swinging toward the emergency area at the neutral angle,
The state in which the prohibition state is released and the state in which swinging to the emergency area is permitted can be switched by the swing course of the swing arm, so that the operator can switch only by operating the swing arm. This eliminates the need for manually switching the switching member, which is required in the conventional apparatus. This greatly improves the usability of the device. Moreover, the clutch is housed in the support member and the swing arm, so that chips and the like do not enter at the time of work, and malfunction can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a conventional left-right inclined saw device.

FIG. 2 is a plan view of a conventional left-right inclined saw device.

FIG. 3 is a front view of a conventional left-right inclined saw device.

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

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

FIG. 6 is a diagram illustrating the operation of the clutch.

FIG. 7 is a diagram illustrating the operation of the clutch.

FIG. 8 is a diagram illustrating the operation of the clutch.

FIG. 9 is a diagram illustrating the operation of the clutch.

FIG. 10 is a diagram illustrating the operation of a clutch.

FIG. 11 is a diagram illustrating the operation of the clutch.

FIG. 12 is a diagram illustrating an operation of a clutch.

FIG. 13 is a diagram illustrating the operation of the clutch.

FIG. 14 is a diagram illustrating the operation of the clutch.

FIG. 15 is a diagram illustrating the operation of the clutch.

FIG. 16 is a diagram illustrating the operation of a clutch.

FIG. 17 is a diagram illustrating the operation of the clutch.

FIG. 18 is a diagram illustrating the operation of a clutch.

FIG. 19 is a diagram illustrating the operation of the clutch.

FIG. 20 is a diagram illustrating the operation of a clutch.

FIG. 21 is a diagram illustrating the operation of a clutch.

FIG. 22 is a diagram illustrating the operation of a clutch.

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

FIG. 24 is a diagram illustrating the operation of the clutch.

FIG. 25 is a diagram illustrating the operation of the clutch.

FIG. 26 is a diagram corresponding to FIG. 5 at the time of FIG. 8;

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

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

FIG. 29 is a diagram corresponding to FIG. 5 at the time of FIG. 14;

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

FIG. 31 is a view corresponding to FIG. 4 at the time of FIGS. 18 and 19;

[Explanation of symbols]

 Reference Signs List 4 support member 4a support surface 6 swing arm 12 saw blade 14 drive source 39 clutch 40 first clutch disk 42 second clutch disk 44 third clutch disk

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-318402 (JP, A) JP-A-6-55701 (JP, U) JP-A-1-148147 (JP, U) 18485 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B27B 5/20

Claims (3)

(57) [Claims] 1. A support member having a support surface for supporting a workpiece, 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 saw blade capable of tilting in the left-right direction, and a drive source for driving 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 abuts on the stopper in conjunction with a swing process of the swing arm. A left-right inclined saw device, which is switched between a position and a position where contact is avoided. 2. The left-right inclined saw device according to claim 1, wherein a swing angle at which the saw blade is orthogonal to the support surface is a neutral angle,
The range from the neutral angle to one swing limit is set as a normal range,
When the range from the neutral angle to the other swing limit is an emergency range, and when the angle slightly swinging from the neutral angle to the normal range side is a release angle, the one-side swing It is switched to the contact position by the process of swinging to the neutral angle after passing the release angle from the limit side, and swinging to the neutral angle after swinging from the neutral angle to the normal range within the release angle A left-right inclined saw device, which is switched to a contact avoidance position depending on the progress. 3. The left-right inclined saw device according to claim 2, wherein the clutch is prevented from rotating toward the support member.
A clutch member, a third clutch member that is prevented from rotating on the swing arm side, and a second clutch member that can be freely contacted and separated between the first and third clutch members. The clutch member has an abutting portion that is in contact with the stopper. During the course from the neutral angle to the release angle, the second clutch member and the third clutch member are maintained in the first connection state, The second clutch member and the third clutch member are brought into a second connected state by a progress toward the one swing limit side beyond the release angle, and the second clutch member and the third clutch member are brought into a neutral state from the first connected state by a progress toward the neutral angle. The third clutch member is disengaged from the second clutch member, and the third clutch member is connected to the second clutch member in a course from the second connection state toward the neutral angle. Lateral inclination saws device to.