JPS583607Y2 - Positioning device between gearing head and processing unit - Google Patents

Description

[Detailed description of the invention] The present invention is mainly based on a machine tool with an exchangeable gigang head, that is, a machine tool in which any one of a plurality of gigang heads is selected, guided to the front of a processing unit, and then connected to the machine tool. in machine tools.

The present invention relates to a device for pre-positioning the unit and the head relative to each other in preparation for the bonding.

Conventionally, a device of this kind has been proposed in which a positioning pin and a bottle hole are provided on opposing surfaces of the unit and the head, but in this case, when the pin and the bottle hole are each straight, The pin has a relatively small diameter.

The pin hole is formed to have a relatively large diameter, so that when the pin and the pin hole are completely fitted together, a relatively large play is caused between them, which impairs the accuracy of positioning. I can't escape it.

To explain this in detail, 1. For example, in the type shown in the sixth figure, in which the processing unit A is provided with a straight bottle hole a and the gearing head B is provided with a straight pin b, the unit A and the head B are connected to each other. Considering the case where the bottle first hits point C partially and hits the entire surface first, the bottle hole a is aligned with the line a1. The bottle hole a must have a considerably larger diameter than the pin b on the trajectory indicated by al, and thus when both a and b are fitted together, it will have a relatively large play a. It cannot be avoided.

The object of the present invention is to obtain a device that reduces the inconvenience of folding as much as possible, and is mounted on the base 1.

A slide table 3 that is fed and driven in the front and back direction by a feed motor 2 such as a pulse motor, a hydraulic cylinder, etc., a processing unit 4 placed on the slide table 3, and a rail 5 in the left and right direction in front of the processing unit 4. Equipped with
A gearing head and processing unit in which a gearing head 6 traveling along the rail 5 is guided to the front of the processing unit 4, and a pin I on the rear surface of the gearing head 6 is fitted into a pin hole 8 on the front surface of the unit 4. In the positioning device, the pin I has a tapered pin having a tapered surface 1a on the outer circumferential surface whose diameter gradually decreases toward the tip, and a tapered surface 8 on the inner circumferential surface that substantially fits the bottle hole 8 to the tapered surface 7a.
It is characterized by having a tapered hole having a diameter of a.

The gearing head 6 has the shaft 1 attached to the bracket 9 on the upper part of its back.
The bracket 9 is placed on the rail 5 and can run freely along the roller 11, which is pivotally supported at the rail 5. Therefore, the bracket 9 is rotated around the roller 11 on the rail 5, for example, as shown in FIG. It is assumed that there is a tendency to lean forward or backward as shown in the figure.

Figures 1 and 2 show the entire machine tool equipped with the device of the present invention. In this case, the rail 5 described above is a movable rail at the front, and together with the fixed rail 5a at the rear, the rail is annular as a whole. Four gearing heads 6 are arranged around the outer periphery of the gearing head, and an arbitrary one is selected on the rail 5 by feeding and rotating the gearing heads 6 by an index mechanism 12 above the gearing heads.

Note that the pin 7 described above, that is, the taper pin having the tapered surface 7a, is provided with a stronger taper 7b at its tip.

To explain the operation, the processing unit 4 is advanced from the backward movement end position shown in FIGS. 1 and 2.

At a position where the unit 4 is brought into contact with a gearing head 6 prepared in advance on the front surface thereof, a clamp mechanism (not shown) acts to integrally connect the two units 6 and 4.

As the unit 4 continues to move forward, a predetermined process is applied to the workpiece in front of it, but the unit 4 and the head 6 are positioned relative to each other by fitting between the pin I and the pin hole 8 prior to their connection.

In this case, substantially the same as in the conventional example described above, 1 and 4 and 6
If we consider the case where the pin first contacts one side and then contacts the entire surface, this is as shown in FIG. Even though it has a relatively small diameter, it completely fits into the pin 7 without being disturbed.

In other words. When the pin 7 and the bottle hole 8 are completely fitted into each other, the vertical play that should occur between them is relatively small.

In this way, according to the present invention, a gearing head 6 guided along the rails 5 in the left-right direction is provided in front of the processing unit 4 that slides in the front-rear direction, and the pin 7 on the rear surface of the head 6 is connected to the unit 4. In the positioning device, the pin 7 and the pin hole 8 are formed into a taper pin having a tapered surface 7a and a taper hole having a tapered surface 8a so that the pin 7 and the pin hole 8 fit into the front bottle hole 8, so that the fitting between the two is easy. However, in the initial stage of the fitting, the two are easily fitted by their tapered surfaces 7a and 8a, so that when the pinot T and the pin hole 8 are fitted together, It can be made with less play in the vertical direction, and has the effect of improving positioning accuracy.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of an example of a machine tool equipped with the proposed device, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged cutaway side view of the main parts, and Fig. 4 is FIG. 5 is a side view illustrating the inclination of the canog head, FIG. 5 is a diagram illustrating its operation, and FIG. 6 is a diagram illustrating the operation in a conventional example. 1...Base, 2...Feed motor, 3.
...Mountain slide chiffle, 4...Processing unit 5...Rail 6...Guyang head, 7...Pino 8...Bottle hole , 7a
, 8a...Tapered surface.

Claims (1)

[Scope of utility model registration request] On the base 1, there is a slide table 3 which is driven in the front and back direction by a feed motor 21 such as a pulse motor, a hydraulic cylinder, etc., a processing unit 4 placed on the slide table 3, and a processing unit 4 in front of the processing unit 4. A gearing head 6 running along the rail 5 is guided to the front face C of the processing unit 4, and a pin 7 on the rear face of the gearing head 6 is fitted into a front hole 8 of the unit 4. In a positioning device for a gearing head and a machining unit, the pin 7 has a tapered pin having an outer circumferential tapered surface 7a whose diameter gradually decreases toward the tip, and an inner circumferential surface that substantially fits the pin hole 8 to the tapered surface 7a. 1. A positioning device for a gigang head and a processing unit, characterized in that it is configured to have a tapered hole having a tapered surface 8a.