CN204308335U - A kind of gear-hobbing clamp of fast changeable - Google Patents

Abstract

The utility model belongs to the technical field of gear processing, in particular to a rapidly replaceable gear hobbing fixture, comprising a gear hobbing base fixed on a workbench through fixing screws, and is characterized in that a The gear hobbing mandrel disk, the gear hobbing lower pad is arranged above the hobbing mandrel disk, and the hobbing mandrel is fixed on the hobbing base through the hobbing mandrel disk. The gear hobbing fixture of the utility model changes the "taper shank connection" in the prior art into "the cylindrical hole and the end surface positioning connection", and achieves the purpose of directly replacing the hobbing mandrel. It has simple structure, stable performance and extremely low cost. , Reduce labor intensity and greatly improve replacement efficiency.

Description

A Quickly Replaceable Gear Hobbing Fixture

technical field

The utility model belongs to the technical field of gear processing, in particular to a rapidly replaceable hobbing fixture.

Background technique

Gear hobbing is the most important link in the gear machining process, and the hobbing fixture is the basis for the connection between the workpiece and the machine tool in gear hobbing and the guarantee of machining accuracy. Therefore, every time the type of workpiece to be processed is changed, the fixture needs to be replaced. With the promotion of the concept of flexible production of multiple varieties and small batches, the replacement of fixtures has become extremely frequent. As shown in Figure 1, the replacement method of the existing hobbing fixture is as follows: first remove the hobbing base from the hobbing table, and then use a special wrench to disassemble the nut, then replace the hobbing pad and the hobbing mandrel . The disadvantages of this method are: 1. The hobbing base is very heavy, and the hobbing base must be disassembled every time. The labor intensity is too large, and it is easy to produce bumps, which will cause the installation accuracy of the tooling to be inaccurate; 2. After the hobbing base is removed , The radial installation datum is completely destroyed, and the hobbing fixture needs to be re-aligned, resulting in extremely low replacement efficiency of the hobbing fixture; 3. The hobbing fixture adopts a taper shank connection method, which is difficult to process and high in cost.

Utility model content

The utility model aims at the shortcomings of the above-mentioned prior art, and provides a hobbing fixture with simple structure, fast replacement and low cost.

The technical solution of the utility model to solve the above-mentioned technical problems is as follows: a quickly replaceable gear hobbing fixture, including a hobbing base fixed on the workbench by fixing screws, and its special feature is that the upper part of the hobbing base is passed through an inner hexagon The screw is fixed with a hobbing mandrel disc, and the hobbing mandrel is fixed on the hobbing base through the hobbing mandrel disc.

Further, a hobbing underpad is arranged above the hobbing mandrel disk.

The beneficial effect of adopting the above further solution is that the lower pad of the hobbing gear plays the role of axially supporting the workpiece.

The beneficial effects of the utility model are: the gear hobbing fixture of the utility model changes the "taper shank connection" of the prior art into "the cylindrical hole and the end surface positioning connection", and achieves the purpose of directly replacing the hobbing mandrel. Simple, stable performance, extremely low cost, reduced labor intensity, and greatly improved replacement efficiency.

Description of drawings

Fig. 1 is the structural representation of existing hobbing fixture;

Fig. 2 is the structural representation of the utility model;

In the figure, 1. Hobbing base; 2. Nut; 2', Hexagon socket head cap screw; 3. Hobbing mandrel; 4. Hobbing lower pad; 5. Fixing screw;

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

A quick-replaceable gear hobbing fixture, including a hobbing base 1 fixed on the workbench by a fixing screw 5, and its special feature is that a hobbing mandrel is fixed above the hobbing base 1 by a hexagon socket head cap screw 2' The hobbing mandrel disc 6 is provided with a hobbing lower pad 4 above the hobbing mandrel disc 6 , and the hobbing mandrel 3 is fixed on the hobbing base 1 through the hobbing mandrel disc 6 .

The utility model is installed and used in this way. When installing for the first time, the hobbing base 1 is finished to ensure the parallelism of the upper and lower end surfaces and the verticality of the positioning hole to the lower end surface, so as to ensure the accuracy of the hobbing mandrel 3 so that each contact The surface runout is less than 0.005mm, and then the hobbing base 1 is installed and fixed with the hobbing mandrel 3 through the hobbing mandrel disc 6, the hexagon socket head screw 2', the hobbing underpad 4 and the hobbing mandrel 3, and then clamped to the workbench. The installation and commissioning of the positive hobbing mandrel 3 is completed. During use, each time the workpiece to be processed is replaced, the hobbing mandrel 3 can be directly replaced without removing the hobbing base 1 .

Above is the embodiment that the utility model is enumerated, and is only provided for convenience of explanation, when can not limit the meaning of the utility model with this, promptly all various transformation designs done according to the patent scope of the application, all should be included in the utility model. In the scope of the new patent.

Claims (2)

1. A rapidly replaceable gear hobbing fixture, comprising a hobbing base fixed on the workbench by fixing screws, characterized in that a hobbing mandrel disc is fixed above the hobbing base by a hexagon socket head cap screw, through the The hobbing mandrel disk secures the hobbing mandrel to the hobbing base. 2. A quickly replaceable gear hobbing fixture according to claim 1, characterized in that a hobbing underpad is arranged above the hobbing mandrel disk.