JPH0740238A - Brush processing machine - Google Patents

Abstract

PURPOSE:To enable a brush processing machine to be used in compliance with the characteristic of a work by connecting the rotary shaft of a brush driving motor, via a coupling to the rear end of a spindle having a brush fixed to its top end, in a spindle case on whose side surface of a motor for oscillation is attached. CONSTITUTION:A hole 3 is formed in the side wall of a spindle case 2 being fitted inside of an unit holder 1 and the ecentric shaft 6 connected to the shaft of a motor for oscillation 4 is inserted in and engaged within this hole 3. A brush 8 is fixed to the top end of a spindle 7 fitted rotatably inside the spindle case 2 and the rotary shaft 10 of a brush driving motor 9 is connected to the rear end of the spindle 7 via a coupling 11. The coupling 11 is built up in such a way that the pin 15 of a second disc 14 being fixed to the spindle 7 is inserted in the hole 13 of a first disc 12 being fixed to the rotary shaft 10 and both discs 12 and 14 are fixed by boils to the disc body at a lacking piece formed with a radial vertical groove 18a and a horizontal groove 18b in the horizontal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aims to improve the positioning accuracy of a pin and a hole of a coupling which is composed of two discs for connecting a spindle and a rotary shaft of a motor, and to make the oscillation smoother. The present invention relates to an intended brush processing machine.

[0002]

2. Description of the Related Art The conventionally known connection between a spindle of a brush processing machine and a rotary shaft of a motor has a structure in which a semicircular member divided into two is fastened with a bolt.

Further, oscillating is performed by using an air cylinder for raising and lowering the brush unit.

Next, a structure in which the brush drive motor is also used for oscillating drive has been known.

[0005]

According to the above connection structure,
The positioning accuracy between the pin and the hole was poor, and there was a problem that the oscillation could not be performed smoothly.

Further, when an air cylinder is used for raising and lowering the brush unit, it is necessary to switch the solenoid valve. At that time, since the movement is similar to that of the cylinder popping out, smoothness is lacking and the oscillating speed is high. In this case, there is a possibility that an impact may occur at the stroke end of the cylinder, and the oscillating stroke becomes relatively long, which easily causes waste.

When the brush drive motor and the oscillate drive motor are used in combination, it is difficult to change the ratio between the brush motion and the oscillate motion, and thus it is difficult to increase the rotational speed of the brush. There was a problem such as becoming.

[0008]

SUMMARY OF THE INVENTION However, according to the present invention, by devising the connecting portion to improve the accuracy of coupling between the pin and the hole, the brush rotating motor and the oscillating motor are separately provided. It solved the problem of.

That is, according to the present invention, the spindle case is slidably inserted into the unit holder, a hole is formed in the spindle case, and the eccentric shaft attached to the shaft of the oscillating motor is engaged with the hole, and the spindle case A spindle is rotatably fitted inside, a brush is attached to the tip of the spindle, and a rotating shaft of a brush drive motor is connected to the rear end through a coupling. is there.

According to another aspect of the invention, the coupling is composed of a first disc having a hole on the outside and a second disc having a pin engaging with the hole of the first disc. The second disk has a locking piece composed of a radial vertical groove and a horizontal horizontal groove, and the locking piece and the disk body are locked with a bolt.

[0011]

According to the present invention, the pins of the second disk are engaged with the holes of the first disk to form the locking pieces with the vertical grooves and the horizontal grooves on both disks, and the locking pieces and the disk body are connected to each other. Since it is locked by the bolt, the pin or the hole is not affected by the tightening action of the bolt at all, so that the connection accuracy can be kept high.

Further, since the brush drive motor and the oscillating drive motor are individually provided, the number of revolutions (or reciprocating speed) can be arbitrarily selected as needed, and can be used according to the characteristics of the work.

[0013]

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

In FIG. 1, a spindle case 2 is slidably fitted into a unit holder 1 and a hole 3 is formed in a side wall of the spindle case 2. The eccentric shaft 6 connected to the shaft 5 of the oscillating motor 4 is inserted into the hole 3 and engaged therewith. A spindle 7 is rotatably fitted in the spindle case 2 and a brush 8 is fixed to the tip of the spindle 7. A rotary shaft 10 of a brush driving motor 9 is connected to a rear end of the spindle 7 via a coupling 11.

The coupling 11 is a hole 13 in a first disk 12 fixed to a rotary shaft 10 of a brush driving motor 9.
The pin 15 of the second disk 14 fixed to the spindle 7 is inserted into and engaged with. The first disk 12 and the second disk 14 have a locking piece 20 composed of a radial vertical groove 18a and a horizontal horizontal groove 18b, and the locking piece 20 and the disk body are locked by a bolt 19. It

With this structure, when the bolt 19 is tightened to the disk body, the locking piece 20 moves to the disk body side, but the hole 13 and the pin 15 are not affected by the tightening action of the bolt 19 at all. The hole 13 and the pin 15 can be positioned with high accuracy. In FIG. 1, 16 is a cam floor and 17 is a chuck.

In this embodiment, when the brush driving motor 9 is started, the spindle 7 rotates at a predetermined rotation speed (for example, 1800 rpm) via the rotation shaft 10, and the brush 8 also rotates at the same rotation speed. When the oscillating motor 4 is started, the eccentric shaft 6 is rotated at a predetermined rotational speed via the shaft 5, so that the eccentric shaft 6 is oscillated with a stroke corresponding to the eccentric amount. For example, 60 round trips per minute. Therefore, the brush 8 is slid and polished while rotating a predetermined portion of the work 16, and deburring and other processing can be performed.

The rotation speed and the reciprocating sliding speed are merely examples, and needless to say, the rotation speed and the reciprocating speed can be selected according to the characteristics of the work.

[0019]

According to the present invention, since the pin and the hole can be positioned with high accuracy, a smooth oscillating effect can be expected.

Further, since the separate driving motors are used for the oscillating and the rotation of the brush, there is an effect that the number of revolutions per minute and the number of reciprocations can be freely selected according to the characteristics of the work.

However, it is possible to provide a brush processing machine which has less vibration and impact and produces less noise.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a bottom view of the first disk.

FIG. 3 is a front view of the same.

[Explanation of symbols]

 1 Unit Holder 2 Spindle Case 3 Hole 4 Oscillating Motor 5 Shaft 6 Eccentric Shaft 7 Spindle 8 Brush 9 Brush Drive Motor 10 Rotating Shaft 11 Coupling 12 1st Disc 13 Hole 14 2nd Disc 15 Pin

Claims (3)

[Claims] 1. A spindle case is slidably fitted into a unit holder, and a hole is formed in the spindle case.
An eccentric shaft attached to the shaft of an oscillating motor is engaged with the hole, a spindle is rotatably fitted in the spindle case, a brush is attached to the tip of the spindle, and a brush drive motor is attached to the rear end. A brush processing machine in which the rotating shafts of are connected via a coupling. 2. The brush according to claim 1, wherein the coupling is composed of a first disk having an outer hole and a second disk having a pin engaging with the hole of the first disk. Processing machine. 3. The first disk and the second disk each have a locking piece composed of a vertical groove in the radial direction and a horizontal groove in the horizontal direction, and the locking piece and the disk body are locked with a bolt. The brush processing machine according to claim 2, which is characterized in that.