JPH0866858A - Chamfering device - Google Patents

Abstract

PURPOSE: To stabilize a work position to enable high-speed movement and high-precision chamfering by placing along the overall length of a work conveyor a main body rail whose bottom face has a straight obtuse angle, and providing a V-shaped rail only in a grinder position in such a way that the rail moves freely in the horizontal direction via a movement mechanism. CONSTITUTION: When first chamfering is completed by means of a first grinder 17, a formed chamfering wheel 4 rises, a V-shaped rail 16 slides inwards, workpieces 1 chamfered on one side in a straight line become slidable on a V-shaped rail 16 and on a main body rail 2, and a chain 15 for conveying and cutting the workpieces is moved by a fixed pitch. Therefore, the workpieces are moved to a position below a work inverter 19. The chain 15 for conveying and cutting the workpieces pitch feeds the inverted workpieces 1, so that the remaining chamfering operation is performed by a second grinder 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering device for chamfering ridge lines at both ends of an arc segment-shaped work.

[0002]

2. Description of the Related Art A work 1 is a sintered and relatively fragile rough material, and as shown in FIG. 5, has an arc segment as a whole and has a front surface 1c and a back surface 1d. There is 1b, and chamfering of 1a and 1b of this ridgeline is performed. FIG. 6 is a plan view of a chamfering mechanism portion of a conventional chamfering apparatus. The chuck 2 positions and clamps the work 1, and the chamfering grindstone 4
Shows the state before chamfering with the center of the work 1 and the work 1.

FIG. 7 is a view taken in the direction of arrows CC in FIG. 6 and shows a state in which the pressing mechanism 3 is operated and the work 1 is pressed against the chamfering grindstone 4 for chamfering. The operation is performed by pressing the ridgeline 1a of the work 1 clamped and positioned by the chuck 2 to the lower right position of 45 degrees of the general-purpose chamfering grindstone 4 by the pressing mechanism 3 for chamfering, Then, the work 1 is reversed by a work 1 reversing mechanism (not shown), and the ridge line 1b of the work 1 is pressed against the full-shape chamfering grindstone 4 by the mechanism 3 to perform chamfering.

FIG. 8 shows a work 1 having an arc segment shape.
2 shows a general line configuration in which a chamfering processing device 5 for the ridgelines 1a and 1b at both ends of the above and a figure processing device 6 for the front surface 1c and the back surface 1d of the work 1 are combined. The chamfering processing device 5 is arranged via the figure processing device 6 and the conveyor 7 in the subsequent process, and in the previous process of the chamfering processing device 5, the stock capacity of the work 1 for about 1 hour via the conveyor 9 The aligning and feeding device 8 having the above is arranged. The work 1 is moved between steps by a handling mechanism (not shown) such as the pick and press 10.

The figure processing device 6 grinds the front surface 1c and the back surface 1d of the work 1 and is guided by a rail 11.
The upper and lower rubber rollers 12 pinch the crank 1 to give a feed thrust, and the external mold grinding stone 13 for general dies and the internal grinding stone 14 for general dies (internal grinding stone 14 for general dies)
In order to prevent the work 1 from rising during grinding,
A holding jig 14a for holding the surface 1c of the work 1 is attached. The surface 1c and the back surface 1d of the work 1 are grinded at a rate of 1 to 2 seconds / piece. Therefore, the processing amount of the chamfering processing device 5 having a line configuration combined with the figure processing device 6 is required to be equal to or more than that of the figure processing device 6. FIG. 9 shows A of FIG.
The state of the work 1 guided on the rail 11 is shown in a sectional view taken along the line A. FIG. 10 and FIG. 11 are side views of the total internal polishing grindstone 14 and the total external polishing grindstone 13.

[0006]

In the conventional chamfering machine, the work is positioned and clamped individually and pressed against the grindstone, so that the machine becomes complicated and it is necessary to match the machining amount of the figure machining apparatus. High-speed operation was required, and there were many chocolate stops correspondingly, the operating rate was low, the amount of processing was small, and the productivity was poor.

Since the figure processing device is continuously fed (work is performed while the work is connected and pressed), if the work is fed discontinuously due to a trouble of the chamfering device, the aligning and feeding device, etc., The work being processed by the appearance processing device is no longer pushed, resulting in defective processing.

Therefore, it has been necessary to match the processing amount of the chamfering processing device with the processing amount of the figure processing device or reduce the processing amount of the figure processing device. An object of the present invention is to provide a chamfering processing device capable of improving the processing accuracy, operating rate and processing amount at high speed.

[0009]

[Means for Solving the Problem] A work conveying conveyor having push metal fittings at equal intervals is provided on a base, and a first type chamfering grindstone is attached to a spindle via a rotating mechanism. A second grinding machine is provided on the work transfer conveyor so as to be movable up and down, and a work reversing mechanism having a chuck capable of moving vertically and reversing in a horizontal direction is provided between the first and second grinding machines. A main body rail provided on the work transfer conveyor near the first grinder and having a flat bottom obtuse angle is arranged on the work transfer conveyor over the entire length thereof to perform the first and second grinding. The feature is that only the machine position is provided with a V-shaped rail that can be moved left and right via a moving mechanism.

[0010]

Embodiments of the present invention will be described with reference to FIGS. The main parts of the chamfering device are the base 21, the first and second grinding machines 17 and 18, the work conveying / cutting chain 15 (work conveying conveyor), the work reversing device 19, It is composed of a main body rail 20 and a V-shaped rail 16.

The first and second grinders 17 and 18 are composed of a spindle 22 for rotating the full-section chamfering grindstone 4 at a high speed, and a motor 23 for giving a rotational force, and a bracket 24.
Are integrated by. First and second grinding machines 17, 18
Is configured so that it can be slid up and down by an actuator (not shown) such as an air cylinder by a slide bearing 25, and the lower position (the ridge line 1a of the work 1 is 45 degrees with the full-face chamfering grindstone 4). Chamfered at a position where the work 1 moves up on the main body rail 20 and the V-shaped rail 16 by the work conveying / cutting chain 15.
The structure is such that the chamfering grindstone 4 and the work 1 escape so as not to interfere with each other. Normally, two sets of first and second grinders 17 and 18 are required to chamfer the ridgelines 1a and 1b at both ends of the work.

The work conveying / cutting chain 15 is guided by a member 26 below the main body rail 20 and is made of a chain with an attachment. Push fittings 27 are attached to the attachment portions provided at equal intervals so as to come into contact with the work end surface 1e or 1f. The work conveying / cutting chain 15 is configured so that high speed / low speed feed control and intermittent feed can be performed by a motor (not shown). It is controlled so that the work 1 is moved at a high speed when moving and the chamfering operation is performed at a low speed. Forming chamfering whetstone 4
The lower V-shaped rail 16 is separated from the main body rail 20, and when the full-body chamfering grindstone 4 descends (chamfering position), it is an actuator.
Slider 28 (for example, air cylinder) and slide bearing 2
V can be moved left and right by 9 and does not interfere with the chamfering grindstone 4
It has a mold shape. The V-shaped rail 16 has the same sectional shape as the main body rail 20, and when the V-shaped rail 16 is positioned inside, the work slide surface 30 is formed.
Becomes a straight line, and the work 1 has a body rail 20 and a V-shaped rail.
It can be moved by sliding on the rule 16.

The work reversing device 19 is composed of a commercially available air chuck 31 and an air rotor & cylinder 32, and is provided on the stop position of the next push metal fitting 27 of the first grinding machine 17. . The opening / closing direction of the air chuck 31 clamps the work end surfaces 1e and 1f, so that an opening / closing stroke is performed.
The work uses a work width plus 10 to 20 mm specifications. (The chuck 31 can be lowered and clamped immediately when the work conveying / cutting chain 15 enters the chamfering operation (low speed)).

The structure of the second grinder 18 is also the same as that of the first grinder 17
Like the first grinding machine 17, it is provided at the stop position of the pushing metal fitting 27 next to the work reversing device 19 and has a V-shaped rail 16 like the first grinding machine 17.

The chamfering procedure will be described below. The full-shape chamfering grindstone 4 is normally lowered (chamfered position) as shown in FIG. 1, and the V-shaped rail 16 is left and right so as not to interfere with the full-shape chamfering grindstone 4. The work 1 cut out one by one from the alignment supply device is sent to the chamfering processing device 5 by the conveyor 9. Work on conveyor 9 1
Is set at a work supply position 33 on the main body rail 20 of the chamfering device 5 by a handling device such as a pick and press 10.

The work 1 set at the work supply position 33 on the main body rail 20 reaches the position where the work 1 is brought into contact with the general-type chamfering grindstone 4 by the pushing metal fitting 27 of the work conveying / cutting chain 15. When the work 1 is fed at high speed and the work 1 and the chamfering grindstone 4 come into contact with each other, the work is fed at a low speed. First chamfering process completed). The rotation of the full-form chamfering grindstone 4 is rotating in the direction shown in FIG. 4 (down-cut grinding), and the work 1 is pushed toward the main body rail 20 and the pressing metal fitting 27. 1 does not jump out of the body rail 20.

When the first chamfering is completed, the full-form chamfering grindstone 4
Rises, the V-shaped rail 16 slides inward, the V-shaped rail 16 and the main body rail 20 are connected in a straight line, and the one-chamfered work 1 is the V-shaped rail 16, Body rail 20
The work can be slid above and the work conveying / cutting chain 15 is moved by a constant pitch, so that the work reversing device 19 can be moved to the lower position. Work end faces 1e, 1
A method is used in which f is clamped by the chuck 31, and operations of raising, turning, lowering, and unclamping 35 (shown by arrows) are performed to change the direction by 180 degrees. This operation is performed during chamfering of the work 1 (low speed feeding of the work conveying / cutting chain 15), and within the operating time for raising the full-type chamfering grindstone 4 and closing the V-shaped rail 16.

The reversed work 1 is fed by the work conveying / cutting chain 15 at a pitch, whereby the remaining chamfering is performed by the same operation as the chamfering of the first grinder, and the double sided product is completed. . The work 1 chamfered by the second grinder 18 is slid and moved on the main body rail 20 by the work conveying / cutting chain 15, and the next stop position 3
From 4 (discharging position), it is set on the connecting conveyor 7 of the figure processing machine by a handling device such as a pick and press 10. In the above, one work 1 has been described in the order of steps. However, the feeding, first chamfering, work reversing, second chamfering, and discharging operations from the chamfering processing device are carried out by the conveying and cutting chain. The chamfering is performed continuously and at high speed in synchronization with the operation of 15.

[0019]

As described above, the chamfering device is
Since the work is guided in the rail and moves linearly, chamfering can be performed, so the work posture is stable, high-speed movement and high-precision machining are possible, and trouble does not occur. The processing cycle can be shortened, and the operation rate of the post-process image grinding machine can be increased.

[Brief description of drawings]

FIG. 1 is a front view of a chamfering device of the present invention.

FIG. 2 is a sectional view taken along the line BB of FIG. 1 (detailed view of the grinding portion).

FIG. 3 is an explanatory view of a V-type rail (a state in which it escapes to the left and right)

FIG. 4 is an enlarged explanatory view of a work chamfered state.

[Fig. 5] Work diagram after chamfering

FIG. 6 is a plan view of a conventional chamfering machine.

FIG. 7 is a chamfering state explanatory diagram with a chamfering machine in a sectional view taken along line CC of FIG. 6;

[Figure 8] Line configuration diagram connecting the chamfering machine and figure processing machine

[Fig. 9] Work inside the figure processing machine (AA cross-sectional view of Fig. 8)

[Fig. 10] Internal type internal grinding wheel using figure processing machine

[Fig. 11] General type external grinding wheel using figure processing machine

[Explanation of symbols]

 1 Work 1a Ridge line 1b Ridge line 2 Chuck 4 General-type chamfering grindstone 15 Work transfer / cutting chain 16 V-type rail 17 First grinder 18 Second grinder 19 Work reversing device 20 Main body lathe -Rule 21 Base 27 Push metal fitting 31 Chuck

Claims (1)

[Claims] 1. A chamfering device for chamfering the ridge lines at both ends of an arc segment work, provided with a work transfer conveyor having push metal fittings at equal intervals on a base and rotating. First and second grinding machines having a full-type chamfering grindstone attached to a spindle through a mechanism are provided on the work transfer conveyor so as to be vertically movable, and vertically movable with a chuck and can be inverted in the horizontal direction. The reversing mechanism to the first and second
Between the two grinding machines in the vicinity of the first grinding machine on the work transfer conveyor, and a main body rail having a flat obtuse angle at the bottom is arranged on the work transfer conveyor over the entire length. The chamfering device is characterized in that only the second grinding machine position is provided with the V-shaped rail so as to be movable left and right through the moving mechanism.