JPH11156801A - Sliding cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a guide from projecting in a direction in which a cutter moves by guiding a retaining part for retaining the cutter in the movement of the retaining part in one direction, with the help of a linear guide device equipped with a movable part which moves in an orthogonal direction with the one direction in which the retaining part moves. SOLUTION: A force applied to a retaining part 2 when a cutter part 1 is squeezed out toward a linear guide device 4, is transmitted to the first link 31 and the second link 32 of a linkage part 3, and the movable part 41 of the linear guide device 4 is pushed upward. Since the middle point of the first link 31 is restrained by the second link 32, the movement of the retaining part 2 is genuinely linear. In addition, a third link 33 is provided as a position retaining means in parallel with the first link 31 under this link 31. One of the ends of the third link 33 is connected, in a freely rotatable manner, to the lateral face of the retaining part 2 through a pin 33a, while the other end is connected in a freely rotatable manner, to the lateral face of a movable part 41 through a pin 33b. The third link 33 maintains the retaining part 2 in a constantly fixed position, when the cutter part 1 is moved forward and backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide type cutting machine for linearly moving a blade portion parallel to a base.

[0002]

2. Description of the Related Art Conventionally, there has been known a cutting machine for cutting wood by rotating a blade such as a circular saw blade. Among these, there is a slide mechanism that slides a blade in parallel with a base on which wood or the like is placed, and is capable of cutting even long-length wood (for example, a real Kaisho) No. 62-11526, Jpn.
Reference).

[0003] In the blade slide mechanisms described in these prior art documents, a linear guide device is provided with a guide bar of a fixed length, a holding portion for the blade is provided directly on the guide bar, and the blade is slid to move the blade. I was doing linear motion.

[0004]

In the above-mentioned conventional cutting machine, since the longitudinal direction of the guide bar coincides with the sliding direction of the blade, the guide bar protrudes greatly from the cutting machine along the direction of movement of the blade. I do. For this reason, when installing a cutting machine, it is necessary to secure a certain space in the moving direction of the blade, which is inconvenient when used in a narrow work place or the like.

Accordingly, an object of the present invention is to provide a slide-type cutting machine in which the linear guide device does not protrude in the moving direction of the blade and does not take up space.

[0006]

According to the first aspect of the present invention, a holding portion (2) for holding a blade and a guide for guiding the holding portion (2) in one direction are provided. Linear guide device (4) with movable part (41) that moves linearly
And a linking means (3) for linking the one-directional movement of the holding part (2) with the movement of the movable part (41) of the linear guide device (4). Solve the problem.

According to a second aspect of the present invention, there is provided a posture holding means (33) for keeping the posture of the holding portion (2) constant when the holding portion (2) moves in the one direction.

According to the third aspect of the present invention, the linking means (3) is
A first link (31) having one end connected to the holding portion (2), the other end connected to the movable portion (41), one end to the first link (31), and the other end to the linear guide device (4). ), And a second link (32) respectively connected to the second link and the linear guide device.
Position adjusting means (6) for connecting the other end of the link to the linear guide device in a state where the position can be adjusted along the direction of movement of the movable portion of the linear guide device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. In this embodiment, the slide-type cutting machine C includes a base 5 provided with a mounting surface 5a on which a workpiece W is mounted, a linear guide device 4 attached to a rear portion of the base 5, and a linear guide. The apparatus includes a linking section (coupling means) 3 composed of a Scott Russell mechanism connecting the device 4 and the holding section 2, and the blade section 1 held by the holding section 2. Note that the right side of FIG. 1 corresponds to the front of the cutting machine C, and the left side corresponds to the rear. 1 is referred to as the front-rear direction of the cutting machine C, the up-down direction of FIG. 1 is referred to as the up-down direction of the cutting machine C, and the direction perpendicular to the plane of FIG.

The blade portion 1 has a bracket 13 rotatably attached to the holding portion 2 via a pin 31a, and the blade 13 is rotatably supported by the bracket 13 about an axis extending in the left-right direction of the cutting machine C. Shaft 15 and cutter shaft 15
(Not shown), a blade cover 14 surrounding the periphery of the blade shaft 15, and a handle 12 integrally provided at a front end of the bracket 13. The circular saw blade 11 as a blade is detachably attached to the blade shaft 15 so as to be integrally rotatable. The upper half of the circular saw blade 11 is covered with a blade cover 14. A switch SW for turning on and off the rotation of the motor is attached to the handle 12.

The wood W is cut, for example, in the following procedure. After operating the switch SW to start the motor and rotate the circular saw blade 11, the handle 12 is gripped and the blade 1 is
The stopper 13a provided on the bracket 13 is brought into contact with the holding portion 2 by being pushed down around (a) (state in FIG. 2). Thereafter, the blade portion 1 is moved from the near side (the right side in FIG. 1).
The wood W is cut by pushing it toward the linear guide device 4 provided at the rear of the base 5 (the state of FIG. 3).

By the way, when cutting wood W or the like in the above procedure, the operator may feel uncomfortable unless the blade portion 1 makes a genuine linear motion. Therefore, in the slide type cutting machine C, how to make the movement of the blade portion 1 a true linear motion is a very important factor. In the present embodiment, the true linear motion is realized by the linear guide device 4 and the link unit 3. Hereinafter, these will be described.

The linear guide device 4 includes a fixed portion 43 fixed to the base 5, a rod-shaped rod portion 42 movably supported by the fixed portion 43 in the vertical direction of the cutting machine C, and a rod portion 42. It has a movable part 41 attached to the upper end and movable in the vertical direction integrally with the rod part 42.
The fixing portion 43 and the base 5 are provided with through holes 43a and 5b for guiding the rod portion 42 in the vertical direction (see FIGS. 2 and 3). Also, the through hole 4 of the fixing portion 43
Direct-acting bearings B, B are provided on the inner periphery of 3a, and guide the vertical movement of the rod portion. However, the configuration of the linear guide device 4 is not limited to this. For example, the linear guide device 4 may be formed by providing a guide rail extending vertically in the fixed part 43 and providing a slider movable in the movable part 41 along the guide rail.

The linking unit 3 is connected to the first link 31 and the second link 31.
Link 32. One end of the first link 31 is rotatably connected to a side surface of the holding portion 2 via a pin 31a, and the other end is rotatably connected to a side surface of the movable portion 41 of the linear guide device 4 via a pin 31b. . On the other hand, one end of the second link 32 is connected to the first link 31 via a pin 31m.
And the other end is rotatably connected to the upper side surface of the fixed portion 43 of the linear guide device 4 via a pin 32b.

With this configuration, when the blade portion 1 is pushed toward the linear guide device 4 from the state shown in FIG. 2, the force applied to the holding portion 2 is applied to the first portion of the linking portion 3.
, And the movable portion 41 of the linear guide device 4 is pushed upward. On this occasion,
Since the first link 31 has its midpoint constrained by the second link 32, the movement of the holder 2 is a true linear movement.

In the embodiment shown in FIGS. 1 to 3, a third link 33 is provided below the first link 31 in parallel with the first link 31 as posture holding means. One end of the third link 33 is rotatably connected to a side surface of the holding unit 2 via a pin 33a, and the other end is a pin 33b.
Is rotatably connected to the side surface of the movable portion 41 via the. The third link 33 plays a role of keeping the posture of the holding unit 2 constant when moving the blade unit 1 in the front-rear direction. That is, by the addition of the third link 33, the pin 31a which is a connection point between the holding unit 2 and the first link 31 is formed.
The rotation of the holding section 2 around the link 5 is restricted, and the holding section 2 keeps a constant posture with respect to the base 5 so that the link 3
The cutting machine C linearly moves in the front-rear direction while relatively rotating with respect to the cutting machines 1 and 33.

As shown in this embodiment, the first
If there is room for space below the first link 31, the third link 33 can be attached below the first link. However, if there is not enough space, the third link may be provided above the first link 31 as shown in FIG. In this case, since the force for pushing down the blade portion 1 acts as a tensile load on the third link 33, there is no possibility that the third link 33 will buckle.

In the embodiment shown in FIGS. 1 to 4, the movable portion 41 of the linear guide device 4 is moved in the up-down direction. However, the movable portion 41 may be moved in the left-right direction of the cutting machine C. Good. With this arrangement, no force is required to push up the movable portion 41, so that the blade portion 1 can move more smoothly.

FIG. 5 shows the stored state of the slide type cutting machine C according to the present invention. As shown in this figure, if a stopper S is provided between the movable part 41 and the fixed part 43, the blade part 1 is fixed at a position where it is pushed down to the last part of the cutting machine C.

Next, another embodiment of the present invention will be described with reference to FIGS. In addition, FIG.
5 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, a blade position adjusting mechanism 6 for finely adjusting the vertical position of the blade portion 1 is provided. The blade position adjusting mechanism 6 includes an adjusting rod 62 supported movably in the vertical direction by a fixing portion 43 of the linear guide device 4, and a nut-shaped engagement with a screw portion 63 provided at an intermediate portion of the adjusting rod 62. And a dial 61. One end of a second link 32 is rotatably connected to an upper portion of the adjustment rod 62 via a pin 32b.
A part of the outer periphery of the dial 61 is a fixed part 4 of the linear guide device 4.
3 protrudes somewhat forward of the cutting machine C. When the operator rotates the dial 61 by putting his / her finger on the protruding portion of the fixing portion 43, the adjustment rod 62 moves up and down, and the pin 32, which is a connection point between the second link 32 and the linear guide device 4, is moved.
b moves in the vertical direction of the cutting machine C. Along with this, the first link 31 is connected to the pin 31
As a result, the position of the holder 2 changes in the vertical direction, and the distance between the blade 11 and the mounting surface 5a of the base 5 is adjusted.

By providing this position adjusting mechanism 6, FIG.
As shown in (1), the processing of the groove m in the wood W can be made extremely easy. For example, as shown in FIG. 7, when processing a groove m in a wood W while leaving a length L from a lower surface, the base 5 when the blade 1 is pushed down to the lowest point.
If the distance between the upper surface of the blade and the lowermost part of the saw blade 11 is L1,
(The state of FIG. 6A), the connecting portion 44 is
6B is displaced upward from the upper surface of the fixing portion 43 by L2 (L2 = L + L1) (the state shown in FIG. 6B), and the desired groove m is obtained by feeding the blade portion 1 toward the linear guide device 4. Can be.

In the illustrated embodiment, a screw portion (not shown) provided on the dial 61 and a screw portion 63 provided on the adjustment rod 62 are provided to perform position adjustment. However, the present invention is not limited to this. For example, the blade position adjusting means 6 may be provided using a cam, a worm gear, or another gear mechanism.

[0025]

As described above, according to the first aspect of the present invention, the linear guide having the movable portion which moves in one direction of the holding portion for holding the blade in the direction orthogonal to the one direction. Since the guide is provided by the device, it is possible to prevent the guide device from projecting in the moving direction of the blade, and to provide a slide-type cutting machine suitable for work in a narrow place.

According to the second aspect of the present invention, the holding portion for holding the blade portion is prevented from rotating around the connecting portion between the first link and the holding portion as a fulcrum. Therefore, even if the stopper of the bracket is forcibly pressed against the holding portion, the holding portion does not rotate, so that a constant cutting depth can be maintained.

According to the third aspect of the present invention, the vertical position of the blade can be freely adjusted, so that, for example, the cutting depth of the blade with respect to wood can be easily set to an appropriate value.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a slide type cutting machine according to the present invention.

FIG. 2 is a partial cross-sectional side view showing a cutting start state when cutting wood with the slide-type cutting machine of the present invention.

FIG. 3 is a partial cross-sectional side view showing a state of the end of cutting when wood is cut by the slide type cutting machine of the present invention.

FIG. 4 is a side view of a slide type cutting machine showing another embodiment different from the embodiment shown in FIGS. 1 to 3;

FIG. 5 is a side view showing a stored state of the cutting machine.

FIG. 6 is a side view of the cutting machine showing a state in which wood is processed by adjusting the position of the blade portion.

FIG. 7 is a perspective view showing an example of processing wood when the wood is processed by adjusting the position of the blade portion.

[Explanation of symbols]

 Reference Signs List 2 Holder 3 Linker 31 First link 32 Second link 33 Third link 4 Linear guide 41 Moving part 42 Rod part 43 Fixed part 44 Connecting part 6 Position adjusting device 61 Dial 62 Adjusting rod 63 Screw part

Claims (3)

[Claims] 1. A linear guide device comprising: a holding portion for holding a blade; a movable portion provided to guide the holding portion in one direction and linearly moving in the one direction; and the one direction of the holding portion. And a linking means for linking the movement of the movable section of the linear guide device with the movement of the movable section. 2. The slide-type cutting machine according to claim 1, further comprising posture holding means for keeping the posture of the holding unit constant when the holding unit moves in the one direction. 3. The linking means has one end on the holding portion,
A first link having the other end connected to the movable portion,
One end is provided with the first link, and the other end is provided with a second link which is connected to the linear guide device, respectively. A connecting portion between the second link and the linear guide device has the second link The position adjustment means which connects the said other end to the said linear guide device in the state which can be adjusted along the movement direction of the said movable part of the said linear guide device is provided, The Claim 1 or Claim 2 characterized by the above-mentioned. 3. The slide-type cutting machine according to 2.