CN209380024U - A gear hobbing machine - Google Patents

Abstract

The utility model relates to a gear hobbing machine fixture, comprising a gear hobbing mandrel and a pull rod. The gear hobbing mandrel is provided with a through hole along the axis, the pull rod is adapted to the through hole, and one end of the gear hobbing mandrel is connected with an expansion sleeve and a washer. The sliding sleeve is connected to the outside of the tie rod, the washer is sleeved on the outside of the expanding sleeve, the expanding sleeve is used to clamp the workpiece, the workpiece is sleeved outside the expanding sleeve, one end of the workpiece is attached to one end of the washer, and the workpiece is located between the tie rod and the expanding sleeve after fitting. outside the contact area. Using the gear hobbing machine fixture of the utility model, the installation position of the workpiece is set outside the contact area between the tie rod and the expansion sleeve through the washer, so that when the tie rod is pulled to expand the expansion sleeve, the maximum clamping force directly acts on the workpiece, preventing the maximum clamping force. The expansion sleeve at the tightening force is vented to cause the rupture of the expansion sleeve at the place. At the same time, the end face of the washer is used as the positioning surface of the workpiece to ensure the machining accuracy of the workpiece.

Description

A gear hobbing machine

technical field

The utility model relates to a tooling fixture, in particular to a gear hobbing machine fixture.

Background technique

Existing gear hobbing machine fixtures make the expansion sleeve expand to clamp the workpiece or shrink the expansion sleeve to loosen the workpiece through the pulling and cooperation of the hobbing mandrel and the tie rod. One side is stressed and easily broken.

Utility model content

The purpose of the invention of the present utility model is to provide a gear hobbing machine fixture in view of the problem that the existing gear hobbing machine fixture is easily broken during the use process.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is:

A gear hobbing machine clamp comprises a gear hobbing mandrel and a pull rod, the gear hobbing mandrel is provided with a through hole along the axis, the pull rod is adapted to the through hole, and one end of the gear hobbing mandrel is connected with an expansion sleeve and a washer, the expansion sleeve is slidably sleeved on the outer side of the tie rod, the washer is sleeved on the outer side of the expansion sleeve, the expansion sleeve is used for clamping the workpiece, the workpiece is sleeved on the outer side of the expansion sleeve, the One end of the workpiece is attached to one end of the washer, and after the attachment, the workpiece is located outside the contact area between the tie rod and the expansion sleeve.

Pulling the pull rod close to the gear hobbing mandrel, the expansion sleeve expands, clamping the workpiece, pulling the pull rod away from the gear hobbing mandrel, the expansion sleeve shrinks and loosens the workpiece.

By adopting the gear hobbing machine fixture of the utility model, the installation position of the workpiece is set outside the contact area between the tie rod and the expansion sleeve through the washer, so that when the tie rod is pulled to expand the expansion sleeve, the maximum clamping force directly acts on the workpiece, preventing the The expansion sleeve at the maximum clamping force is vented to cause the rupture of the expansion sleeve at this place. At the same time, the end face of the washer is used as the positioning surface of the workpiece to ensure the machining accuracy of the workpiece. The hobbing machine has a simple structure, easy to use and good effect.

Preferably, the tie rod is provided with a conical frustum 1, the inner wall of the end of the expansion sleeve located on one side of the tie rod is provided with a conical surface 1, and the conical surface 1 is adapted to the conical frustum 1.

Preferably, one end of the gear hobbing mandrel connected to the expanding sleeve is provided with a second cone frustum, and the inner wall of the end of the expanding sleeve located on one side of the gear hobbing mandrel is provided with a second conical surface. Fit the truncated cone II.

Preferably, the washer is provided with an internal thread, one end of the gear hobbing mandrel is provided with an external thread, and the washer is threadedly connected to one end of the gear hobbing mandrel.

Preferably, the side wall of the washer is provided with a pin hole, the corresponding gear hobbing mandrel is provided with a pin hole, and the washer pin is connected to one end of the gear hobbing mandrel.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

Using the gear hobbing machine fixture described in the utility model, the installation position of the workpiece is set outside the contact area between the tie rod and the expansion sleeve through the washer, so that when the tie rod is pulled to expand the expansion sleeve, the maximum clamping force directly acts on the workpiece, preventing The expansion sleeve at the maximum clamping force is vented to cause the rupture of the expansion sleeve at this place. At the same time, the end face of the washer is used as the positioning surface of the workpiece to ensure the machining accuracy of the workpiece. The hobbing machine has a simple structure, easy to use and good effect.

Description of drawings

FIG. 1 is a schematic structural diagram of a gear hobbing machine fixture according to the utility model.

Marked in the picture: 1- hobbing mandrel, 2- tie rod, 3- expansion sleeve, 4- washer, 5- workpiece.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

Example

As shown in FIG. 1 , a gear hobbing machine fixture according to the present utility model includes a gear hobbing mandrel 1 and a tie rod 2 .

The gear hobbing mandrel 1 is provided with a through hole along the axis, and the pull rod 2 is adapted to the through hole.

One end of the gear hobbing mandrel 1 is connected with an expansion sleeve 3, the expansion sleeve 3 is slidably connected to the outside of the tie rod 2, and the expansion sleeve 3 is a double-cone expansion sleeve, that is, the expansion sleeve 3 is located in the The inner wall of the end portion on one side of the tie rod 2 is provided with a cone surface 1, the inner wall of the end portion of the expansion sleeve 3 located on one side of the gear hobbing mandrel 1 is provided with a cone surface 2, and the tie rod 2 is provided with a cone truncated surface 1, The first conical surface is adapted to the first conical frustum, and one end of the gear hobbing mandrel 1 connected to the expansion sleeve 3 is provided with a second conical frustum, and the second conical surface is adapted to the second conical frustum.

The outer sleeve of the expansion sleeve 3 is provided with a washer 4, the washer 4 is arranged on one end of the gear hobbing mandrel 1, the side wall of the washer 4 is provided with a pin hole, and the corresponding gear hobbing mandrel 1 is provided with a pin hole. A pin hole, the washer 4 is connected to one end of the gear hobbing mandrel 1 with a pin.

The expansion sleeve 3 is used for clamping the workpiece 5, the workpiece 5 is sleeved on the outside of the expansion sleeve 3, one end of the workpiece 5 is attached to one end of the washer 4, and the workpiece 5 is attached after the attachment. Located outside the contact area between the draw rod 2 and the expansion sleeve 3, pull the draw rod 2 close to the gear hobbing mandrel 1, the expansion sleeve 3 expands, clamps the workpiece 5, and pulls the draw rod 2 away from The gear hobbing mandrel 1 and the expanding sleeve 3 shrink to loosen the workpiece 5, wherein the contact area between the tie rod 2 and the expanding sleeve 3 refers to the conical contact surface of the two.

Using the gear hobbing machine fixture described in the present utility model, the installation position of the workpiece 5 is set at the outside of the contact area of the tie rod 2 and the expansion sleeve 3 through the washer 4, so that when the tie rod 2 is pulled to expand the expansion sleeve 3, the maximum clamping force is directly. Acts on the workpiece 5 to prevent the expansion sleeve 3 at the maximum clamping force from being emptied, causing the expansion sleeve 3 to rupture. At the same time, the end face of the washer 4 is used as the positioning surface of the workpiece 5 to ensure the machining accuracy of the workpiece 5. The structure of the gear hobbing machine is simple , easy to use and good effect.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (5)

1. a kind of gear hobbing machine clamp, which is characterized in that including gear hobbing mandrel (1) and pull rod (2), the gear hobbing mandrel (1) is along axis Line is equipped with through-hole, and the pull rod (2) adapts to the through-hole, and one end of the gear hobbing mandrel (1) is connected with ringfeder (3) and washer (4), the ringfeder (3) is slidably socketed on the outside of the pull rod (2), and the washer (4) is sheathed on the outside of the ringfeder (3), institute Ringfeder (3) are stated for being clamped workpiece (5), the workpiece (5) is sheathed on the outside of the ringfeder (3), one end patch of the workpiece (5) Together in one end of the washer (4), and after fitting, the workpiece (5) is located at the contact zone of the pull rod (2) and the ringfeder (3) Overseas side.

2. gear hobbing machine clamp according to claim 1, which is characterized in that the pull rod (2) is equipped with frustum one, described to rise The inner wall of end that set (3) is located at the pull rod (2) side is equipped with the conical surface one, and the conical surface one is adapted to the frustum one.

3. gear hobbing machine clamp according to claim 1, which is characterized in that the gear hobbing mandrel (1) connects the ringfeder (3) One end be equipped with frustum two, the ringfeder (3) is located at the inner wall of end of gear hobbing mandrel (1) side equipped with the conical surface two, described The conical surface two is adapted to the frustum two.

4. gear hobbing machine clamp according to claim 1-3, which is characterized in that the washer (4) is equipped with internal screw thread, One end of the gear hobbing mandrel (1) is equipped with external screw thread, and the washer (4) is threadedly connected to one end of the gear hobbing mandrel (1).

5. gear hobbing machine clamp according to claim 1-3, which is characterized in that washer (4) side wall is equipped with pin Hole, the corresponding gear hobbing mandrel (1) are equipped with pin hole, and washer (4) bolt is connected to the one of the gear hobbing mandrel (1) End.