JPS5816807Y2 - Swing device for chain chisel machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a swinging device for a chain chisel.

Conventionally, when cutting a groove of a desired length along the longitudinal direction of a workpiece, the base of a chain chisel machine had to be moved along the longitudinal direction of the workpiece, and only the chain was required to move the machine body. In order to reduce the heavy work of lifting and moving, a device is required to move and adjust the base in the longitudinal direction of the workpiece, which tends to complicate the structure and make its operation difficult.

In view of the above-mentioned reasons, the purpose of this invention is to attach a cutting device with a chain blade to the main body, which is movable up and down relative to a column erected on the base, and which can be swung along the longitudinal direction of the workpiece. It is an object of the present invention to provide a swinging device for a chain chisel machine which can be installed at a predetermined swinging angle and easily perform groove processing on a workpiece.

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

In the figure, 1 indicates a chain chisel, 2 a base placed on the upper surface of the workpiece W, 3 and 4 both left and right guide rods, 5
, 6 are both front and rear vises, and 7 is a clamp lever 18, which is an adjustment lever that moves the base 2 in the width direction of the workpiece W.

Now, 10 is the left and right pillars 9.9 installed on the base 2.
The main body is movable up and down between them, and is equipped with a cutting device having a chain blade 16 so as to be swingable in the longitudinal direction of the workpiece W.

That is, the above-mentioned main body 10 is formed into a cylindrical shape as shown in FIG. 6, and sliding holes 11, 11, which are slidably fitted to the pillars 9, are provided at both left and right ends thereof. Furthermore, in the inner hole 12 of the cylindrical portion of the main body 10, as shown in FIG. A gear housing 15, which has a built-in speed reduction mechanism (not shown) that connects the motor housing 14 and is fastened to the front surface of the motor housing 14, is rotatably fitted therein.

The front surface of the gear housing 15 is substantially flush with the front surface of the main body 10, and a swing board 17 that supports a mounting plate (not shown) for a chain blade 16 is fastened to the front surface of the gear housing 15. .

A cover 24 that covers a part of the chain blade 16 and has a discharge port 24A for discharging chips raised by the chain blade 16 is removably attached to the front surface of the oscillating base plate 17.

As shown in FIG. 2, the swing board 17 has a spring 25 stretched between the swelling part 10A protruding from the lower part of the main body 10 and a part of the grip part 29 on the right side of the motor housing 14. is always energized in the clockwise direction shown by
Rotation of the swing board 17 in the counterclockwise direction is prevented.

The upper part of the swing board 17 has a substantially triangular shape as shown in the figure, and the lower right side of the swing board 17 has a set screw 26 screwed into the bulge 10B protruding from the lower right side of the front surface of the main body 10. A locking surface 18 that can come into contact with the end surface is formed, and this locking surface 18 comes into contact with the upper screw 26 when the chain blade 16 is in a hanging shape as shown in FIG. Prevents clockwise rotation.

Further, a regulating member 21 for adjusting the swinging angle of the board 17 to a desired swinging angle is attached to the left end of the swinging board 17 so as to be rotatable about the pivot bolt 19, as shown in FIG. It is being

This regulating member 21 is always biased clockwise in the figure via a spring 20, and its negative side faces an adjustment bolt 27 screwed into a bulge 10C protruding from the upper left part of the main body 10 in the figure. is pressed against the tip 27A.

A flat surface 22 and a locking recess 23 are continuously formed on one side of the regulating member 21.
As shown in FIG. 2, when the chain blade 16 is in a hanging shape, it comes into pressure contact with the tip 27A of the adjustment bolt 27, and the locking recess 23 is in contact with the tip 27A of the adjustment bolt 27 when the chain blade 16 is oscillated at a predetermined angle as shown in FIG. When the chain blade 16 engages with the tip 27A of the adjustment bolt 27, the chain blade 16 itself rotates in the clockwise direction, and the chain blade 16 rotates counterclockwise in the figure due to cutting resistance. This prevents the board 17 from rotating clockwise or the like.

Furthermore, a lever piece 21A for releasing the engagement between the locking recess 23 and the adjustment bolt 27 is integrally formed on the regulating member 21.

Further, the tip end 27A of the adjustment bolt 27 is formed into a hemispherical shape corresponding to the locking recess 23, and the tightening of the adjustment bolt 27 can be adjusted depending on the degree of tightening of the oscillating base plate 17.
The swing angle can be adjusted arbitrarily.

28 is a spring for preventing the adjustment bolt 27 from loosening.

Reference numerals 29 and 29 denote left and right grips provided on the upper part of the motor housing 14, which are used to move the cutting device up and down along the pillars 9, 9 together with the main body 10, and to move the oscillating board 17 and other parts relative to the main body 10. This is for swinging the cutting device.

30 is a locking member for holding the main body 10 at the upper part of the support 9°9; 31 is a stopper rod that sets the descending range of the main body 10; It is fixed via a screw 32 so that it can move up and down.

Subsequently, the operation of this embodiment configured as described above will be explained.

When machining a groove with a dimension longer than the vertical width L of the chain blade 16 (shown in FIGS. 1 and 2) in the longitudinal direction of the workpiece W, first, the chain blade 16 is shown in FIG. 2. While holding the main body 10 in a hanging state, the main body 10 is lowered relative to the support 9.9 to perform the first groove machining.

At this time, due to the force of the spring 25 stretched between the main body 10 and the motor housing 14, the chain blade 16
While preventing counterclockwise rotation of the chain blade 16 itself, the pressure engagement between the locking surface 18 of the oscillating base plate 17 and the tip surface of the set screw 26 prevents the chain blade 16 itself from rotating inadvertently in the clockwise direction. The rotation of the chain blade 16 caused by the cutting resistance of the chain blade 16 which is circulated counterclockwise in FIG. 2 is prevented, and the chain blade 16 is held in a hanging state.

After completing the first groove processing described above, the motor housing 14, the gear housing 15, and the swing board 1 are attached to the main body 10.
7 in the counterclockwise direction as shown in FIG. The engagement recess 23 of the regulating member 21 engages with the tip 27A of the adjustment bolt 27, and the chain blade 16 is held at a predetermined angle tilted along the longitudinal direction of the workpiece W.

After that, adjust the adjustment bolt 2 according to the vertical length of the groove to be machined.
The inclination angle of the chain blade 16 is adjusted by tightening the chain 7.

Thereafter, the main body 10 is lowered relative to the pillars 9, 9, and a second groove is formed.

At this time, due to the force of the spring 25 stretched between the main body 10 and the motor housing 14, the chain blade 1
6 from rotating in the counterclockwise direction, the engagement between the engagement recess 23 of the regulating member 21 and the tip 27A of the adjustment bolt 27 prevents the chain blade 16 itself from rotating inadvertently in the clockwise direction. In Figure 3, chain blade 1 is driven in circulation in the counterclockwise direction.
The chain blade 16 can be held at a predetermined inclination by preventing clockwise rotation of the chain blade 16□ caused by the cutting resistance of 6.

As described above, even when the vertical width of the groove to be machined is larger than the vertical width of the chain blade 16, the groove can be easily machined with a simple operation.

Note that compared to the lower end surface of the chain blade 16 in the hanging state shown in FIG. 2, the lower end surface of the chain blade 16 tilted at a predetermined angle shown in FIG. 3 will rise due to the inclination. Even when machining a groove with a length approximately twice as long as the vertical width of the chain blade 16, the rise of the lower end surface due to the inclination of the chain blade 16 is minimal, which interferes with the groove depth in the workpiece W. The stopper rod 3 is not enough to cause
There is no need to adjust 1.

That is, in this invention, a cutting device having a chain blade for cutting the workpiece is attached to the main body, which is movable up and down with respect to a column erected on the base, along the length of the workpiece. A means for holding the chain blade together with the cutting device at a predetermined swing angle is provided between the main body and the cutting device, so that the cutting device can be moved in the longitudinal direction of the workpiece with respect to the main body. By swinging the swing along the swing angle and maintaining the swing angle at a predetermined swing angle, it is possible to easily form a groove of a predetermined length in the longitudinal direction of the workpiece.

Moreover, the means disposed between the main body and the cutting device to hold the cutting device at a predetermined swing angle includes an adjusting member (adjusting bolt in the embodiment) provided in a part of the main body and a means for holding the cutting device at a predetermined swing angle. The main body is a regulating member disposed in a part of the device and for engaging with one end of the adjusting member, and when cutting with the chain blade, the cutting resistance of the chain blade against the workpiece is reduced. Although the oscillating motion of the device is configured to be regulated by the regulating member, when cutting a groove in the longitudinal direction of the workpiece with the cutting device oscillating at a predetermined angle, the oscillating motion of the cutting device is regulated by the regulating member. Since it is possible to restrict the swinging motion of the cutting device due to the cutting resistance of the chain blade against the workpiece, there is an effect that grooves of a predetermined length in the longitudinal direction of the workpiece can be formed satisfactorily and smoothly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a perspective view showing only the chain body, Fig. 2 is a front view showing the chain blade held in a hanging state, and Fig. 3 is the chain blade. Figure 4 is a front view showing the state where the camera is tilted at a prescribed angle.
FIG. 5 is a side sectional view showing a fitted state of the main body and the cutting device, and FIG. 6 is an enlarged perspective view of the main body. 1... Chain chisel, 2... Base, 9... Support, 10... Body, 12...
...Inner hole, 14...Motor housing,
15... Gear housing, 16... Chain blade, 17... Swing board, 18...
...Latching surface, 21...Regulation member, 23...
...Latching recess, 25...Spring, 26...
...Stopper, 27...Adjustment bolt, W...
...Work material.

Claims (1)

[Scope of utility model registration request] A cutting device having a chain blade for cutting the workpiece is attached to the main body, which is movable up and down with respect to a column erected on the base, and is swingable along the longitudinal direction of the workpiece. A means for holding the cutting apparatus at a predetermined swing angle is provided between the main body and the cutting apparatus, and this holding means includes an adjustment member provided on a part of the main body and an adjustment member provided on a part of the cutting apparatus. and a regulating member arranged to engage with one end of the adjusting member, and when cutting with the chain blade, the swinging motion of the cutting device due to the cutting resistance of the chain blade against the workpiece is prevented. A swinging device for a chain chisel machine, characterized in that it is configured to be regulated by the regulating member.