CN218946538U

CN218946538U - Workpiece clamping mechanism for gear hobbing machine

Info

Publication number: CN218946538U
Application number: CN202220801772.5U
Authority: CN
Inventors: 刘晓峰; 王浩; 李光琦
Original assignee: Tianjin Batec Precision Machine Tool Co ltd
Current assignee: Tianjin Batec Precision Machine Tool Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2023-05-02
Anticipated expiration: 2032-04-07

Abstract

The utility model provides a workpiece clamping mechanism for a gear hobbing machine, which is characterized by comprising a machine base, a telescopic assembly, a lower rotating body, a rotating seat, an upper rotating body, a centering shaft and a connecting structure; the telescopic component is arranged in the middle of the stand, the bottom of the stand is provided with a lower rotating body, the top of the stand is provided with a rotating seat, the bottom of the rotating seat is provided with an upper rotating body, the interior of the upper rotating body is provided with a connecting structure, and the bottom of the upper rotating body is connected with a centering shaft through the connecting structure; the centering shaft is fixed through the limiting rod in the long groove, the stability of centering shaft installation can be guaranteed only by ensuring that the limiting rod cannot fall off from the long groove, the serious abrasion caused by repeated screwing in the prior art is avoided through the design, and even if the centering shaft in the centering shaft is required to be frequently replaced after long-time use, the stability of the centering shaft cannot be seriously affected, and the centering shaft is more stable to install.

Description

Workpiece clamping mechanism for gear hobbing machine

Technical Field

The utility model relates to the technical field of gear hobbing machines, in particular to a workpiece clamping mechanism for a gear hobbing machine.

Background

The gear hobbing machine is a machine tool which is most widely applied in gear machining machine tools, can be used for cutting straight teeth and helical gears, can be used for machining worm gears, chain wheels and the like, is used for machining straight teeth, helical teeth, herringbone teeth and worm gears by a hob cutter according to a generating method, and needs a clamping tool for fixing workpieces when various workpieces with special tooth shapes such as splines, chain wheels and the like are machined, so that the clamping tool for the gear hobbing machine is provided in the prior art;

the existing clamping tool comprises a machine base, wherein a clamping seat is arranged at the top of the machine base, a rotating body is arranged at the bottom of the clamping seat, a centering shaft is connected inside the rotating body through threads, the rotating body is arranged at the top of the machine base, a plurality of cylinders are arranged inside the rotating body to clamp a workpiece, and a telescopic cylinder is arranged in the middle of the machine base to drive the upper part and the lower part of the machine base to move in a telescopic manner;

the existing clamping tool can be used by installing the machine base on the gear hobbing machine, the connecting mode of the centering shaft and the upper rotating body is set to be in threaded connection in the prior art after the centering shaft is used for a long time, disassembly can be achieved through reverse rotation when the centering shaft needs to be replaced, the clamping tool is equipment which is recycled, namely the centering shaft is a part which is frequently replaced, threads are repeatedly rubbed when the centering shaft is replaced, the threads are severely worn after the centering shaft is replaced for many times, external threads on the outer side wall of the centering shaft cannot be completely meshed with the internal threads, the positioning shaft cannot be connected stably, shaking occurs in the working process of the positioning shaft, and stability is reduced.

Disclosure of Invention

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the workpiece clamping mechanism for the gear hobbing machine is characterized by comprising a machine base, a telescopic component, a lower rotating body, a rotating seat, an upper rotating body, a centering shaft and a connecting structure; the telescopic component is arranged in the middle of the stand, the bottom of the stand is provided with a lower rotating body, the top of the stand is provided with a rotating seat, the bottom of the rotating seat is provided with an upper rotating body, the interior of the upper rotating body is provided with a connecting structure, and the bottom of the upper rotating body is connected with a centering shaft through the connecting structure;

the connecting structure comprises a positioning column, a mounting groove, a spring, a limiting rod, an operating rod, a sliding block and a sliding groove; the middle part of the upper rotating body is provided with a positioning groove, the top of the centering shaft is provided with a positioning column, the positioning column is arranged in the positioning groove, the outer side wall of the positioning column is provided with a mounting groove, a spring is arranged in the mounting groove, one end of the spring is connected with the bottom of the mounting groove, the other end of the spring is connected with a limiting rod, the side wall of the positioning groove in the rotating body is provided with a long groove, the limiting rod is positioned in the long groove, an operating rod is arranged in the long groove, the outer side wall of the long groove is provided with a sliding groove, and the outer side wall of the operating rod is provided with a sliding block which is in sliding connection with the sliding groove;

preferably, the circle centers of the installation groove and the long groove are positioned on the same horizontal line;

preferably, one end of the operating lever extends to the outside of the upper rotating body, and the other end of the operating lever contacts the limit lever.

The beneficial effects of the utility model are as follows:

the workpiece clamping mechanism for the gear hobbing machine replaces the mode of threaded connection between the centering shaft and the upper rotating body in the prior art by arranging the connecting structure, so that the abrasion is reduced to the greatest extent on the premise of ensuring that the centering shaft can be detached and replaced, when the centering shaft is needed to be replaced, the operating rod is pressed inwards, the limiting rod is extruded under the action of sliding connection of the sliding block and the sliding groove, the limiting rod is completely pressed into the mounting groove by spring compression, so that the positioning column is not limited by the limiting rod, the centering shaft can be taken out and replaced by the limiting effect, the centering shaft is fixed in the long groove by limiting the limiting rod, the installation stability of the centering shaft can be ensured only by ensuring that the limiting rod cannot fall off from the long groove, the serious abrasion caused by repeated screwing in the prior art is avoided by the design, the centering shaft in the application is not seriously influenced by frequent replacement after long-time use, and the centering shaft is installed more stably;

the workpiece clamping mechanism for the gear hobbing machine has the advantages that the sliding block and the sliding groove are additionally arranged, the sliding block and the sliding groove are connected in a sliding mode to play a role in positioning and guiding the moving track of the operating rod, and the situation that the operating rod cannot be quickly abutted with the limiting rod and therefore the centering shaft cannot be detached due to displacement and sliding caused by movement of the operating rod is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In the accompanying drawings:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

fig. 3 is an enlarged view at a in fig. 2.

As shown in the figure, the device comprises a 1-base, a 2-telescopic component, a 3-lower rotating body, a 4-rotating seat, a 5-upper rotating body, a 6-centering shaft, a 7-positioning column, an 8-mounting groove, a 9-spring, a 10-limiting rod, an 11-operating rod, a 12-sliding block and a 13-sliding groove.

Detailed Description

Example 1

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The workpiece clamping mechanism for the gear hobbing machine is characterized by comprising a machine base 1, a telescopic component 2, a lower rotating body 3, a rotating seat 4, an upper rotating body 5, a centering shaft 6 and a connecting structure; the middle of the machine base 1 is provided with a telescopic component 2, the bottom of the machine base 1 is provided with a lower rotating body 3, the top of the machine base 1 is provided with a rotating seat 4, the bottom of the rotating seat 4 is provided with an upper rotating body 5, the interior of the upper rotating body 5 is provided with a connecting structure, and the bottom of the upper rotating body 5 is connected with a centering shaft 6 through the connecting structure;

the connecting structure comprises a positioning column 7, a mounting groove 8, a spring 9, a limiting rod 10, an operating rod 11, a sliding block 12 and a sliding groove 13; a positioning groove is formed in the middle of the upper rotating body 5, a positioning column 7 is installed at the top of the centering shaft 6, the positioning column 7 is installed in the positioning groove, an installation groove 8 is formed in the outer side wall of the positioning column 7, a spring 9 is installed in the installation groove 8, one end of the spring 9 is connected with the bottom of the installation groove 8, the other end of the spring 9 is connected with a limiting rod 10, a long groove is formed in the side wall of the positioning groove in the rotating body, the limiting rod 10 is positioned in the long groove, an operating rod 11 is installed in the long groove, a sliding groove 13 is formed in the outer side wall of the long groove, a sliding block 12 is installed in the outer side wall of the operating rod 11, and the sliding block 12 is in sliding connection with the sliding groove 13;

preferably, the circle centers of the installation groove 8 and the long groove are positioned on the same horizontal line;

preferably, one end of the lever 11 extends to the outside of the upper rotating body 5, and the other end of the lever 11 is in contact with the stopper rod 10.

Example 2

When the automatic clamping device works, the machine base 1 is arranged on the gear hobbing machine and used for clamping and positioning a workpiece, the machine base 1 is separated towards two ends through the telescopic mechanism, the workpiece is arranged in the lower rotating body 3, the cylinder is arranged in the lower rotating body, the workpiece is clamped through the cylinder, the telescopic cylinder is started again to retract the machine base 1, and the final clamping effect is achieved;

when the centering shaft 6 is worn after being used for a long time, the centering shaft 6 needs to be replaced periodically, the operating rod 11 moves inwards under the action of sliding connection of the sliding block 12 and the sliding groove 13, the operating rod 11 positioned in the long groove is contacted with the limiting rod 10, the limiting rod 10 is further pushed to move towards the outer side of the long groove, the moving limiting rod 10 presses the spring 9, the spring 9 is compressed, the limiting rod 10 is further enabled to completely move into the mounting groove 8, at the moment, the positioning columns 7 are not limited, the dismounting of the centering shaft 6 can be achieved, when a new centering shaft 6 is mounted, the limiting rods 10 at two ends are respectively pressed into the mounting groove 8, at the moment, the positioning columns 7 are inserted into the positioning groove, the spring 9 releases elasticity to eject the limiting rod 10 to be attached to the inner wall of the positioning groove, the centering shaft 6 is continuously moved towards the inner side of the positioning groove, when the positioning columns 7 move to the bottom of the positioning groove, the mounting groove 8 and the center of the long groove are positioned on the same straight line, the limiting rod 10 is not limited in the limiting position, the operating rod 11 is rebounded into the long groove, and the end of the sliding groove 12 is ejected out of the sliding groove 13, and the mounting of the sliding groove 13 is completed.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. Various components mentioned in the present utility model are common in the art, and it should be understood by those skilled in the art that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications can be made in the present utility model without departing from the spirit and scope of the utility model, which is defined in the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The workpiece clamping mechanism for the gear hobbing machine is characterized by comprising a machine base, a telescopic component, a lower rotating body, a rotating seat, an upper rotating body, a centering shaft and a connecting structure; the telescopic component is arranged in the middle of the stand, the bottom of the stand is provided with a lower rotating body, the top of the stand is provided with a rotating seat, the bottom of the rotating seat is provided with an upper rotating body, the interior of the upper rotating body is provided with a connecting structure, and the bottom of the upper rotating body is connected with a centering shaft through the connecting structure;

the connecting structure comprises a positioning column, a mounting groove, a spring, a limiting rod, an operating rod, a sliding block and a sliding groove; a positioning groove is formed in the middle of the upper rotating body, a positioning column is mounted at the top of the centering shaft, the positioning column is mounted in the positioning groove, a mounting groove is formed in the outer side wall of the positioning column, a spring is mounted in the mounting groove, one end of the spring is connected with the bottom of the mounting groove, the other end of the spring is connected with a limiting rod, a long groove is formed in the side wall of a positioning groove in the rotating body, the limiting rod is positioned in the long groove, an operating rod is installed in the long groove, a sliding groove is formed in the outer side wall of the long groove, a sliding block is installed on the outer side wall of the operating rod, and the sliding block is in sliding connection with the sliding groove.

2. The workpiece clamping mechanism for a gear hobbing machine as set forth in claim 1, wherein the centers of the installation groove and the elongated groove are on the same horizontal line.

3. The workpiece clamping mechanism for a gear hobbing machine as set forth in claim 1, wherein one end of said lever extends to the outside of the upper rotating body, and the other end of said lever is in contact with the stopper rod.