CN221336944U

CN221336944U - Gear hobbing clamp for shaft gear

Info

Publication number: CN221336944U
Application number: CN202322802235.XU
Authority: CN
Inventors: 谢建华; 李林鑫
Original assignee: Chongqing Qingping Machinery Co ltd
Current assignee: Chongqing Qingping Machinery Co ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-07-16
Anticipated expiration: 2033-10-18

Abstract

The utility model belongs to the technical field of process equipment, and relates to a shaft gear hobbing clamp which is suitable for shaft workpieces with threads at one end, and comprises a seated center and a thread sleeve, wherein the seated center is fixedly connected to a machine tool workbench and is opposite to the machine tool center, one end of the thread sleeve is sleeved on the seated center and is fixedly connected, the other end of the thread sleeve is provided with internal threads or external threads, and the internal threads or the external threads are matched with the threads on the workpieces to clamp the workpieces. According to the utility model, the workpiece is clamped by utilizing the threaded sleeve which is fixedly connected to the center with the seat in a threaded fit manner, and the hobbing clamp is clamped by adopting a mode that the center with the seat is tightly propped against the workpiece in a threaded connection manner, so that the clamp avoids uncertainty and machining errors caused by fit gaps, the requirement on clamping length can be effectively reduced, and effective clamping can be realized only by a shorter clamping length.

Description

Gear hobbing clamp for shaft gear

Technical Field

The utility model belongs to the technical field of process equipment, and relates to a gear hobbing clamp for a shaft gear.

Background

In the manufacture of mechanical gears, gear hobbing is a common process method, and the precision of a gear with shaft teeth is closely related to the positioning and clamping modes of a clamp, wherein the clamping modes relate to the precision of gear hobbing and the protection of the surface of a workpiece. The traditional clamping mode generally adopts a clamping jaw to position and clamp, and although the shaft part clamp with the structure can meet the processing requirement of the shaft part to a certain extent, the following defects are overcome:

1. The clamping length of part of the workpiece is small, and the clamping is not firm; 2. because of the fit clearance between the clamping jaw and the chuck, uncertainty exists in the position of the clamping jaw, and a workpiece can deviate from the center in the clamping process, so that machining errors are caused; 3. part of the workpiece does not have a clamping part long enough, and the process is required to be lengthened for clamping, so that the working procedures are increased, and the machining efficiency is reduced.

Disclosure of utility model

Accordingly, the present utility model is directed to a gear hobbing clamp for a shaft workpiece with threads at one end, which solves the technical problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a gear hobbing clamp, this gear hobbing clamp is applicable to the axle type work piece that one end has the screw thread, and it includes the top and the thread bush of taking seat, take top fixed connection and be relative on the lathe workstation and with the lathe top, the one end overcoat of thread bush in take on the top and fixed connection of seat, the other end is equipped with internal thread or external screw thread, just internal thread or external screw thread cooperate in order to press from both sides tight work piece with the screw thread on the work piece.

Further, when the threads of the threaded sleeve are internal threads, the seated center is inserted into the threaded sleeve.

Further, when the threads of the threaded sleeve are internal threads, the seated center penetrates through the threaded sleeve.

Further, the seated center is fixedly connected with the machine tool workbench through a first screw.

Further, the seated center and the threaded sleeve are fixedly connected through a second screw.

The utility model has the beneficial effects that:

The gear hobbing clamp is suitable for shaft workpieces with threads at one end, and the workpiece is clamped by utilizing the threaded sleeve fixedly connected to the belt seat center through the threaded fit on the workpiece.

And secondly, the hobbing clamp can also be used for working procedures such as turning and milling of shaft parts, has wide application range, simple structure, convenient operation, stable quality and high machining precision, and can effectively improve the machining efficiency.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

Fig. 1 is a schematic structural view of a gear hobbing clamp for shaft gears according to an embodiment.

Reference numerals: the novel screw comprises a first screw 1, a second screw 2, a seated center 3, a threaded sleeve 4, a machine tool center 5 and a workpiece 6.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Please refer to fig. 1, which is a gear hobbing clamp for a shaft gear, comprising a first screw 1, a second screw 2, a base center 3 and a thread bush 4, wherein the first screw 1 is used for connecting the base center 3 and a machine tool workbench, the base center 3 is used for positioning a workpiece 6 in the axial direction and is used for centering the workpiece together with the machine tool center 5, the second screw 2 is used for connecting the base center 3 and the thread bush 4, one end of the thread bush 4 is sleeved on the base center 3 in a sleeved mode, and the other end of the thread bush 4 is provided with an internal thread which is matched with an external thread on the workpiece 6 to clamp the workpiece 6.

Specifically, the threaded sleeve 4 is a hollow sleeve, and one end, which is close to the seated center 3, is provided with a disc connected with the second screw 2, so that the threaded sleeve can be connected to the seated center 3 through the second screw 2.

The working process of the gear hobbing clamp is as follows:

One end of a workpiece 6 is screwed into the threaded sleeve 4 through threaded connection until a tip hole at one end of the workpiece 6 is in full contact with the seated tip 3, then a handle for controlling the machine tool tip 5 is placed at a downward pressing position (namely, the machine tool tip 5 is made to approach the workpiece), the machine tool tip 5 is made to prop against a tip hole at the other end of the workpiece 6, the workpiece 6 is screwed with the threaded sleeve 4 again, so that the workpiece 6 is clamped, and finally the handle for controlling the machine tool tip 5 is placed at a locking position.

Specifically, in the hobbing process, the seated center 3 rotates under the drive of the machine tool workbench, so as to drive the threaded sleeve 4 and the workpiece 6 to rotate, and the rotation direction is the same as the screwing direction of the threaded connection between the threaded sleeve 4 and the workpiece 6, so that the stability of the clamp is ensured.

Example 2

The difference between this embodiment and embodiment 1 is that the thread of the end of the threaded sleeve 4 far away from the seated tip 3 in this embodiment is an external thread disposed on the outer circle of the threaded sleeve 4, and the workpiece 6 is provided with an internal thread matched with the external thread, and the tip of the seated tip 3 passes through the central hole of the threaded sleeve 4, so that when the threaded sleeve 4 is in threaded connection with the workpiece 6, the seated tip 3 abuts against a tip hole disposed at the bottom of the threaded hole of the workpiece 6.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The utility model provides a shaft gear hobbing clamp which characterized in that: the gear hobbing clamp is suitable for shaft workpieces with threads at one end, and comprises a seated center and a thread sleeve, wherein the seated center is fixedly connected to a machine tool workbench and is opposite to the machine tool center, one end of the thread sleeve is sleeved on the seated center in a sleeved mode and is fixedly connected with the seated center, the other end of the thread sleeve is provided with internal threads or external threads, and the internal threads or the external threads are matched with threads on the workpieces to clamp the workpieces.

2. The shaft gear hobbing clamp as claimed in claim 1, wherein: when the threads of the threaded sleeve are internal threads, the seated center is inserted into the threaded sleeve.

3. The shaft gear hobbing clamp as claimed in claim 1, wherein: when the threads of the threaded sleeve are internal threads, the seated center penetrates through the threaded sleeve.

4. The shaft gear hobbing clamp as claimed in claim 1, wherein: the center with the seat is fixedly connected with the machine tool workbench through a first screw.

5. The shaft gear hobbing clamp as claimed in claim 1, wherein: the center with the seat is fixedly connected with the threaded sleeve through a second screw.