Description of 5 commonly used horizontal gear hobbing fixtures for small module gear processing

Immediately beforeVertical gear hobbing machine fixture, Continue to share with you the description of 5 commonly used horizontal gear hobbing fixtures for small module gear processing. The details are as follows.

1. Mandrel fixture positioned by spokes or center hole

Uses: Mainly used for processing the gears with holes or spokes, divided into the following 2 types.

a. Mandrel fixture positioned by spokes

The piece of gear is positioned by the spokes and mounted on the valve spindle. The clamping spring on the machine tool gives a certain clamping force on the clamping spindle.Press the piece gear on the fixture.

When the workpiece spindle rotates, it drives the clamping spindle to rotate.

b. Mandrel fixture positioned with center hole

The workpiece is mounted on the mandrel, and the workpiece is pressed tightly on the fixture by the clamping mandrel.

2. Special mandrel fixture

It is a special mandrel designed according to the structural characteristics of the workpiece.

a. The picture below is a special clamp for sheet gears with a central thin-walled hole.

b. The figure below is a special fixture for positioning the shoulder and end face.

3. Bullet chuck

The spring chuck has high positioning accuracy and stability, and the clamping is quick and convenient.

It is suitable for processing with slender shaftgear.

4. Plum blossom top fixture

Purpose: According toShaft gearThe different structures can be divided into two types of fixtures, inner and outer center type, which are mainly used for processing shaft and tooth parts.

a. Inner center fixture

This kind of top has convenient clamping and simple structure, but it is difficult to manufacture.

Purpose: Used to clamp shaft gears with shaft shoulders.

The active center 1 is an inner center with a hole and a quincunx groove on the inner cone, and the supporting center 2 does not have a quincunx groove.Its working principle is the same as that of the outer top type fixture.

b. Outer center fixture

The clamp is convenient to install and has a simple structure, but the positioning hole is prone to burrs.

Purpose: Used to clamp shaft gears with center holes.

The end of the active center 1 has a quincunx groove, and the end of the support center 2 is a cone with a 60° apex angle.Through the clamping spring of the machine tool, the center exerts axial pressure on the workpiece.

When the active center rotates, the quincunx end drives the workpiece to rotate.

5. Mandrel fixture positioned by outer diameter

The active spindle 1 is installed on the adjustable flange, the workpiece is placed in the positioning sleeve 2, and the positioning sleeve is installed on the active spindle. The driven spindle is pressed against the workpiece by the spring force of the machine tool, and it is driven when the active spindle rotates. The driven spindle rotates.

The above is the description of the 5 commonly used horizontal gear hobbing fixtures for small module gear processing, for reference, if you have more questions or related needs, you can contact EP gear Free consultation.