JPS6040247Y2 - Machine tool gearing head device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a gearing head device for a machine tool of exchangeable gearing head type.

Conventionally, this type of device connects a rear gear case that is connected to a processing unit and a front plate that has a spindle on the front surface that is interlocked with a gear in the case through a joint case in the middle. Types of gearing heads are known, but in this case, the gearing head is generally constructed as a single rigid body, and in such a system, when the gearing head is operated, the head and its front part are connected. In the case of a type in which the jig table that holds the workpiece is positioned by fitting a guide bar on one side with a guide post on the other side, if there is some degree of misalignment between the two, the fitting may cause strain. This is likely to cause damage to one or the other of them, and furthermore, there are disadvantages such as a tendency to lose machining accuracy.

The purpose of the present invention is to obtain a device that does not have the above disadvantages.The gear case 2 at the rear connected to the processing unit 1 and the spindle 4 interlocked with the gear 3 inside the case 2 are placed at the front. A joint head 7 is formed by connecting the front plate 5 and the front plate 5 with the joint case 6 in the middle.
In the case where the joint case 6
It is characterized by having a flexible structure.

The drawing shows the case of a machine tool with exchangeable gearing heads, that is, the machining unit 1 is provided on a machine stand 8 so as to be movable back and forth via a feed table 9, and the gearing heads 7 have a plurality of them. Arranged on the outer periphery of the unit 1, any one can be freely selected to the operating position on the front side, and this one piece is then connected to the unit 1 and moves forward with it to be prepared in front of it. The workpiece a on the jig table 10 is processed.

The jig stand 10 is provided at a front position on the machine stand 8 so as to be freely reversible via a turntable 11 on the lower surface, and furthermore, the head 7 and the jig stand 10 are provided with a guide bar 12 on one side. Both sides 12 are provided with a guide post 13 on the other side.
．． 13 so that they are mutually positioned.

At least two gears 3 are provided in the gear case 2 to rotate in conjunction with the drive shaft 14 on the unit 1 side, and at least two spindles 4 are provided, for example, composed of an FB spindle. Each gear 3 and each spindle 4 are connected to each other via a constant velocity universal joint 15 extending inside the joint case 6.

The joint case 6 may be constructed to be flexible, for example, by making the entire joint case into a hollow frame-like shape as shown in the figure, or by using a plurality of pillars in the front and rear directions (not shown). be.

To explain its operation, consider the case where the gearing head 7 is connected to the processing unit 1 and moves forward with the unit 1. Next, the head 7 is attached to the guide bar 12 on the jig stand 10 in front of it. The head 7 is positioned by fitting together with the guide post 13, and if there is some misalignment at this time, the head 7 will elastically deform to some extent in the joint case 6 in the middle to accommodate this. .

That is, the front plate 5 at the front is allowed to move vertically and horizontally to some extent, and accurate positioning between the front plate 5 and the jig table 10 is achieved, thus improving the machining accuracy.

In this way, according to the present invention, the gearing head 7 is allowed to flex to some extent at the joint case 6 in the middle thereof, which eliminates the above-mentioned disadvantages of the conventional head 7 in which the head 7 is an integral rigid body. It has no effect.

[Brief explanation of drawings]

Fig. 1 is a side view of one example of the proposed device, Fig. 2 is its front view, Fig. 3 is an enlarged side view with a part cut out showing the operating state of its main parts, and Fig. 4 is its IV-IV. There is a cross-sectional view along the line. 1... Processing unit, 2... Gear case, 3... Gear, 4... Spindle,
5...Front plate, 6...Joint case, 7...Guyang head.

Claims (1)

[Scope of utility model registration request] A gear case 2 at the rear connected to the processing unit 1 and a front plate 5 at the front having a spindle 4 interlocked with the gear 3 in the case 2 are connected to each other by an intermediate joint case 6 to form a gearing head. A gearing head device for a machine tool, characterized in that the joint case 6 is configured to be flexible.