JPH0744306U - Rotary table angle fixing mechanism of cutting machine - Google Patents

Abstract

(57) [Abstract] (Modified) [Purpose] A cutting machine with a simple structure and simple operation by installing an elastic member along the lever rod between the tip of the fixture and the hole of the holder. Fix the rotary table angle. [Arrangement] An arc-shaped tooth row 2a concentric with the rotary table 1 is arranged on the outer peripheral portion of the front surface of a base 2, and a hole 3b is formed in a predetermined portion of a holder facing the arc-shaped tooth row 2a. The fixing tool 4 that engages and fixes the rotary table has holes 3
It is installed slidably through b. The fixture 4 includes a tip portion 4a having one or more tooth shapes meshed with the arcuate tooth row 2a, a lever rod 4b slid through a hole of a holder, and an elastic member 5 accommodated along the lever rod. And a grip 6. The elastic member 5 is
It is installed along the lever rod between the tip of the fixture and the hole of the holder, and biases the tooth profile of the tip of the fixture so as to mesh with the arcuate tooth row of the base.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an angle fixing mechanism of a rotary table of a cutting machine. In particular, in a cutting machine for cutting a material such as wood, the rotary table is installed at the center of the base and the rotary table is rotated with respect to the fixed base. The present invention relates to a rotary table angle fixing mechanism of a cutting machine that rotates integrally with a supporting frame of a saw blade and cuts a processing material fixed by a vise provided on a base at a predetermined angle.

[0002]

[Prior art]

 Conventionally, in this field, there has been known a rotary table angle fixing mechanism for a cutting machine as described in, for example, Japanese Utility Model Laid-Open No. 58-102018. As shown in FIGS. 4 and 5, this conventional example has a rotary table 41 for performing angle cutting. In a cutting machine, a holder 46 is attached to a rotary table 41 rotatably fitted to a base 42, One end of a lever 45 is rotatably supported by a fulcrum pin on the holder, and the lever is provided so as to be pressed against one side by an elastic body such as a spring. The stopper pin 44 is pivotally supported by a pin on the other end of the lever. Then, the lever is swingably fitted to the holder, and one or more pin holes 49 are fitted in the base corresponding to the tips of the stopper pins, and the base is attached to the other end of the holder 46. A handle shaft 47 is provided so as to fix the rotary table therethrough, and a grip 48 that is movable in the axial direction is fitted to the handle shaft 47. In such a structure, when the handle shaft and the grip are in the extended position by the elastic body provided in the grip, the stopper pin 44 is fitted into the pin hole 49 of the base 42 to fix the rotary table. By maintaining the position and pushing the grip toward the center of the rotary table, the lever 45 is swung to release the fitting between the stopper pin 44 and the pin hole 49, and the rotary table is rotatable. become.

In such a conventional device, the fixing mechanism between the base and the lever has a very complicated structure, and the stopper pin is fitted in the pin hole of the base. However, there is a problem in that its operability is also complicated.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of solving the problems in the conventional technology as described above, and an apparatus for fixing the angle of the rotary table of the cutting machine by a simple operation with a very simple structure is provided. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the rotary table angle fixing mechanism of the cutting machine of the present invention has a rotary table that is rotated in conjunction with the saw blade supporting frame for cutting to set the cutting angle. One end of the holder is attached to the center of the lower part of the rotary table that is rotatably fitted to the fixed base, and the holder extends radially outward of the rotary table to the outside of the outer periphery of the base and the other end of the holder. Is a rotary table angle fixing mechanism of a cutting machine that is bent vertically upward and faces the outer peripheral portion of the base, and an arc-shaped tooth row concentric with the rotary table is provided on the outer peripheral portion of the front surface of the base. A hole is formed in a predetermined portion of the holder facing the arcuate tooth row, and a fixture that engages with the tooth row and fixes the rotary table is slidably installed through the hole.

The fixture has a tip portion having one or more tooth shapes meshed with the arc-shaped tooth row, a lever rod slid through a hole of a holder, and a holder along the lever rod. The elastic member and the grip that pulls the fixing device to release the fixing to make the turntable rotatable.

The elastic member is installed along the lever rod between the tip of the fixture and the hole of the holder, and the tooth profile of the tip of the fixture meshes with the arc-shaped tooth row of the base. Are being urged.

[0008]

With this configuration, since the tooth profile of the tip of the fixture is pressed by the elastic member so as to mesh with the arc-shaped tooth row of the fixed base, the rotary table has a fixed angle. Becomes On the other hand, when the grip of the fixture is pulled, the elastic member is compressed and the lever bar of the fixture slides axially rearward with respect to the hole of the holder, so the tooth profile of the tip of the fixture is that of the fixed base. The rotating table is released from the arc-shaped tooth row and is released from the fixed state. When the grip is rotated to the left or right while the fixing is released in this way, the rotary table and the cutting saw blade support frame are freely rotated.

After rotating the rotary table to set a predetermined cutting angle and removing the force pulling the grip as it is, the tooth profile of the tip of the fixing tool at the position is fixed by the elastic force of the elastic member. It re-engages with the arcuate tooth row, and the rotary table becomes fixed. In this fixed state, the cutting material held by the cutting blade is cut by the cutting saw blade at a desired angle.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a cutting machine having an angle fixing mechanism according to the present invention, in which a rotary table is installed in the center of the base, and the rotary table is mounted on the base with a supporting frame for cutting saw blades. An example is shown of a cutting machine that rotates integrally and cuts a processing material fixed by a vise provided on a base at a predetermined angle. 2 is an enlarged sectional view of an angle fixing mechanism of the cutting machine, and FIG. 3 is a perspective view of the cutting machine.

In FIGS. 1 to 3, reference numeral 1 is a rotary table which is rotated in conjunction with a supporting frame of a saw blade for cutting, and the rotary table 1 is rotatably fitted to a central portion of a base 2. ing. An arc-shaped tooth row 2 a concentric with the rotary table 1 is provided on the outer peripheral portion of the front surface of the base 2. One end of a holder 3 is attached to the center of the lower portion of the rotary table 1, and the holder 3 is located outside the arc-shaped tooth row portion 2a provided on the outer periphery of the base 2 radially outward of the rotary table 1. It is extended to the position. The other end of the holder 3 is provided with an upright portion 3a which is bent in the vertical direction and faces the arcuate tooth row portion 2a of the base 2 at a predetermined interval.

A hole 3 b is formed in the standing portion 3 a of the holder 3 at a position facing the arcuate tooth row portion 2 a of the base 2, and the lever rod 4 b of the fixture 4 slides axially in the hole 3 b. It is inserted freely. A tip portion 4a having at least one tooth profile formed so as to mesh with the tooth profile of the arc-shaped tooth row section 2a is attached to one end of the lever rod 4b of the fixture 4. A grip 6 is attached to the other end of the lever rod 4b of the fixture 4.

An elastic member 5 such as a coil spring is provided along the lever rod 4b between the tip 4a of the fixture 4 and the upright portion 3a of the holder 3. Due to the elastic force of the elastic member 5, the lever bar 4b of the fixture 4 slides axially forward (leftward in FIG. 2) with respect to the hole 3b of the holder 3 to form at the tip 4a of the fixture 4. The formed tooth profile is in pressure contact with the arcuate tooth row portion 2 a of the base 2.

According to this embodiment, since the tooth profile of the tip portion 4 a of the fixture 4 is biased by the elastic member 5 so as to mesh with the arcuate tooth row portion 2 a of the base 2, the rotary table 1 is moved to the base 2. It is fixed in a non-rotatable state. On the other hand, when the grip 6 of the fixture 4 is pulled outward (to the right in FIG. 2), the elastic member 5 is compressed and the lever bar 4b of the fixture 4 slides axially rearward with respect to the hole 3b of the holder 3. The tooth profile of the tip 4a of the fixture 4 and the tooth profile of the arcuate tooth row 2a of the base 2 are disengaged from each other. Accordingly, the rotary table 1 becomes rotatable with respect to the base 2, and when the grip 6 is rotated to the left or right in this state, the rotary table and the supporting frame of the cutting saw blade are rotated, and The cutting angle of the material can be set freely. When the force pulling the grip 6 is removed, the tooth profile of the tip 4a of the fixture 4 meshes with the arcuate tooth row 2a of the base 2 again due to the expansion of the elastic member, so that the rotary table 1 becomes a base. It is fixed in a non-rotatable state with respect to 2.

[0016]

[Effect of device]

 According to the present invention, as described above, the angle of the rotary table is set by a much simpler structure than the conventional one, and the rotary table is fixed to the base in a non-rotatable state by a simple operation. You can Further, the device can be manufactured at a lower cost than before.

[Brief description of drawings]

FIG. 1 is a side view of a cutting machine having an angle fixing mechanism of the present invention.

FIG. 2 is an enlarged sectional view of an angle fixing mechanism of the present invention.

FIG. 3 is a perspective view of a cutting machine having an angle fixing mechanism of the present invention.

FIG. 4 is a schematic side view of a conventional cutting machine.

FIG. 5 is a schematic bottom view of a conventional cutting machine.

[Explanation of symbols]

 1 rotary table 2 base 2a arcuate tooth row 3 holder 4 fixture 4a tip 4b lever 5 elastic member 6 grip

Claims (3)

[Scope of utility model registration request] 1. A cutting machine having a rotary table for angularly cutting a material, wherein one end of a holder is attached to a lower central portion of the rotary table rotatably fitted to a fixed base of the cutting machine, and the holder is rotated. In the rotary table angle fixing mechanism of the cutting machine, which extends in the radial direction of the table to the outside of the outer peripheral portion of the base, and the other end of the holder is bent vertically upward so as to face the outer peripheral portion of the base. An arc tooth row concentric with the rotary table is arranged on the outer peripheral portion, a hole is formed in a predetermined portion of the holder facing the arc tooth row, and a fixture for fixing the rotary table by meshing with the tooth row Is installed slidably through the hole, the rotary table angle fixing mechanism of the cutting machine. 2. A fixture for fixing the rotary table includes a tip having one or more tooth shapes meshed with the arc-shaped tooth row, a lever rod slid through a hole of a holder, and a lever rod. The rotary table angle fixing mechanism of the cutting machine according to claim 1, comprising an elastic member housed along the grip and a grip. 3. The distal end of the fixture is formed by a coil spring as the elastic member and is installed along the lever rod between the tip of the fixture and the hole of the holder. The tooth profile of the base part is disengaged from the circular arc tooth row of the base, and the rotary table is unlocked.When the grip is released, the tooth profile of the tip of the fixture engages with the circular arc tooth row of the base, and the rotary table The rotary table angle fixing mechanism of the cutting machine according to claim 2, wherein the rotary table is fixed in angle.