CN216096819U

CN216096819U - Multi-piece gear hobbing tool

Info

Publication number: CN216096819U
Application number: CN202122214067.3U
Authority: CN
Inventors: 吴军; 朱敬伟; 张新林; 李计全; 杨孟虎; 郭大海
Original assignee: Henan Purui Precision Machinery Co ltd
Current assignee: Henan Purui Precision Machinery Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-03-22
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a multi-piece gear hobbing tool which comprises a tool base, wherein the tool base is cylindrical, a taper sleeve is fixed in the upper axial direction of the tool base and extends into the tool base, a mandrel is matched in the taper sleeve, a supporting plate sleeved outside the mandrel is arranged on the upper portion of the taper sleeve, a central expansion sleeve is matched on the upper portion of a shaft body of the mandrel, a first cone matched with the inner conical portion of the central expansion sleeve is arranged on the shaft body, a first screw rod is arranged at the upper end of the mandrel, and is in threaded connection with a compression nut which can compress the central expansion sleeve and enable the central expansion sleeve to be matched with and expand the first cone, so that tensioning of multiple parts to be machined is realized. The utility model has convenient and quick replacement, realizes the radial positioning of a plurality of workpieces, has accurate positioning, can clamp a plurality of workpieces at one time, and has high production efficiency and good consistency of product quality.

Description

Multi-piece gear hobbing tool

Technical Field

The utility model relates to the technical field of tool fixtures, in particular to a multi-piece hobbing tool.

Background

With the increasing production cost of enterprises and the popularization of enterprise intelligent processing technology, the production of small batches and multiple batches is increasing day by day, and the traditional hobbing tool is adopted, so that the clamping speed is low, the clamping precision is low, the current production efficiency and the part processing cost of the enterprises are seriously influenced, and the product competitiveness of the enterprises is reduced. At present, a disc part hobbing tool is mainly fixed by a solid shaft, the solid shaft is in clearance fit with a part, the gear manufacturing precision is mainly limited by the influence of the fit clearance of the part and the tool, and the hobbing precision is difficult to guarantee if the fit clearance of the part and the tool is too large due to factors such as machining errors; the workpiece is fixed by adopting an expansion sleeve, but only one workpiece can be fixed, and only one workpiece can be subjected to gear hobbing at a time, so that the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide a multi-workpiece hobbing tool which is convenient and quick to replace, realizes radial positioning of multiple workpieces, is accurate in positioning, can clamp multiple workpieces at one time, is high in production efficiency and good in product quality consistency, and can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a many gear hobbing frocks, including the frock base, the frock base is the tube-shape, and the upper portion axis direction of frock base is fixed with the taper sleeve, and the taper sleeve stretches into in the frock base, the adaptation has the dabber in the taper sleeve, the upper portion of taper sleeve is equipped with the supporting disk of cup jointing in the dabber outside, the axle body upper portion adaptation of dabber has the central cover that rises, and this axle body is equipped with the inside cone that rises the cover with the center and partially cooperates one, the upper end of dabber is equipped with screw rod one, a screw rod threaded connection has gland nut, gland nut can compress tightly the central cover that rises and make and cooperate and rise with a cone to the realization is to a plurality of tight that rise of waiting to process the part.

Preferably, the lower part of the shaft body of the mandrel is provided with a second cone matched with the taper sleeve, the lower end of the mandrel is provided with a second screw, the second screw is in threaded connection with a nut, the second screw is further sleeved with a gasket, and the second cone of the mandrel is in positioning fit with the taper sleeve when the nut is in screwing fit with the second screw.

Preferably, the taper sleeve is fixedly connected with the tool base through a plurality of groups of fastening screws; the bottom of the tool base is provided with a plurality of open grooves.

Preferably, the first screw rod is further sleeved with a pressing sleeve, the pressing sleeve is located between the compression nut and the central expansion sleeve, and the pressing sleeve is matched with the upper end of the central expansion sleeve.

Preferably, the machining fixture further comprises a gland, the gland is located in the upper axial direction of the mandrel and driven by a hydraulic mechanism to move downwards and press the gland on the end face of the part to be machined.

Compared with the prior art, the utility model has the beneficial effects that: according to the multi-piece hobbing tool, the mandrel and the taper sleeve are fixed through the Morse taper sleeve, so that the connection is reliable, the precision is high, and the replacement is convenient and quick; a plurality of work pieces cup joint in the outside that the cover rises in the center, and the cover rises in the center and the epaxial cone of dabber cooperation, rises the cover through gland nut pushing down the center, and the cover rises in the center to the realization is to the radial positioning of a plurality of work pieces, and the location is accurate moreover, can once the many work pieces of clamping, and production efficiency is high, and product quality uniformity is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a schematic view of a mandrel construction of the present invention;

FIG. 4 is a schematic structural view of the center expanding sleeve of the present invention;

fig. 5 is a front view of the present invention.

In the figure: the tool comprises a center expansion sleeve 1, a support plate 2, a tool base 3, an open slot 3.1, a compression nut 4, a compression sleeve 5, a taper sleeve 6, a mandrel 7, a screw rod I7.1, a cone I7.2, a cone II 7.3, a screw rod II 7.4, a gasket 8, a nut 9, a fastening screw 10 and a gland 11.

Detailed Description

In the following description, the technical solutions of the present invention will be described with reference to the drawings of the embodiments of the present invention, and it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary to indicate or imply that the indicated devices or elements have a specific orientation:

referring to fig. 1-5, the present invention provides a technical solution: a multi-piece gear hobbing tool comprises a tool base 3, wherein the tool base 3 is cylindrical, a taper sleeve 6 is fixed in the upper axial direction of the tool base 3, the taper sleeve 6 extends into the tool base 3, a mandrel 7 is matched in the taper sleeve 6, a supporting plate 2 sleeved outside the mandrel 7 is arranged at the upper part of the taper sleeve 6 and used for supporting a plurality of workpieces, a central expansion sleeve 1 is matched at the upper part of a shaft body of the mandrel 7, a cone I7.2 matched with the inner conical part of the central expansion sleeve 1 is arranged on the shaft body, a screw I7.1 is arranged at the upper end of the mandrel 7, the screw I7.1 is in threaded connection with a compression nut 4, the compression nut 4 can compress the central expansion sleeve 1 and enables the central expansion sleeve 1 to be matched and expanded with the cone I7.2, so that the plurality of parts to be machined can be tensioned, the plurality of workpieces are sleeved outside the central expansion sleeve 1, the inner diameters of the plurality of workpieces are in clearance fit with the outer wall of the central expansion sleeve 1 at the beginning, and the compression nut 4 is screwed, the compression nut 4 presses the central expansion sleeve 1 downwards, and the central expansion sleeve 1 expands, so that a plurality of workpieces are radially positioned, radial displacement is avoided during gear hobbing, and the machining precision is ensured;

as shown in fig. 2 and 3, a second cone 7.3 adapted to the taper sleeve 6 is arranged at the lower part of the shaft body of the mandrel 7, a second screw 7.4 is arranged at the lower end of the mandrel 7, a nut 9 is in threaded connection with the second screw 7.4, a washer 8 is further sleeved on the second screw 7.4, the second cone 7.3 of the mandrel 7 is in positioning fit with the taper sleeve 6 when the nut 9 is in screwing fit with the second screw 7.4, the second cone 7.3 of the mandrel 7 is matched with the taper sleeve 6 and is in Morse taper sleeve fit, and then the second screw 7.4 is pulled down through the nut 9, so that the second cone 7.3 is fastened with the taper sleeve 6, the connection is reliable, the precision is high, the replacement is convenient and fast, and the axis position precision of the mandrel 7 is ensured;

the taper sleeve 6 is fixedly connected with the tool base 3 through a plurality of groups of fastening screws 10, so that the tool base is convenient to disassemble; the bottom of the tool base 3 is provided with a plurality of open slots 3.1 which are convenient to install on a machine tool through bolts and nuts;

as shown in fig. 3, the first screw 7.1 is further sleeved with a pressing sleeve 5, the pressing sleeve 5 is located between the compression nut 4 and the central expansion sleeve 1, the pressing sleeve 5 is matched with the upper end of the central expansion sleeve 1, and the pressing sleeve 5 presses down the central expansion sleeve 1 when the nut 9 is screwed;

as shown in fig. 5, the machining fixture further comprises a gland 11, the gland 11 is located in the upper axial direction of the mandrel 7, the gland 11 is driven by a hydraulic mechanism to move downwards and is pressed on the end face of the part to be machined, the hydraulic mechanism drives the gland 11 to press downwards on the end face of the part to be machined during gear hobbing, the workpiece is pressed, deviation during gear hobbing is avoided, and machining accuracy is guaranteed.

The utility model is not described in detail in the prior art, and it is apparent to a person skilled in the art that the utility model is not limited to details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the scope of the claims concerned.

Claims

1. The utility model provides a many hobbing frocks, includes fixture base (3), its characterized in that: tooling base (3) are the tube-shape, the upper portion axis direction of tooling base (3) is fixed with taper sleeve (6), and taper sleeve (6) stretch into in tooling base (3), the adaptation has dabber (7) in taper sleeve (6), the upper portion of taper sleeve (6) is equipped with cup joints at dabber (7) outside supporting disk (2), the axle body upper portion adaptation of dabber (7) has central cover (1) that rises, and this axle body be equipped with the inside cone portion complex of central cover (1) that rises cone (7.2), the upper end of dabber (7) is equipped with screw rod (7.1), screw rod (7.1) threaded connection has gland nut (4), gland nut (4) can compress tightly central cover (1) that rises and make and rise with cone (7.2) cooperation, thereby realize the rising of a plurality of waiting to process the part tight.

2. The multi-piece hobbing tool of claim 1, wherein: the lower part of the shaft body of the mandrel (7) is provided with a second cone (7.3) matched with the taper sleeve (6), the lower end of the mandrel (7) is provided with a second screw rod (7.4), the second screw rod (7.4) is in threaded connection with a nut (9), the second screw rod (7.4) is further sleeved with a gasket (8), and the second cone (7.3) and the taper sleeve (6) of the mandrel (7) are in positioning fit when the nut (9) and the second screw rod (7.4) are screwed and matched.

3. The multi-piece hobbing tool of claim 1, wherein: the taper sleeve (6) is fixedly connected with the tool base (3) through a plurality of groups of fastening screws (10); the bottom of the tool base (3) is provided with a plurality of open grooves (3.1).

4. The multi-piece hobbing tool of claim 1, wherein: the first screw rod (7.1) is further sleeved with a pressing sleeve (5), the pressing sleeve (5) is located between the compression nut (4) and the central expansion sleeve (1), and the pressing sleeve (5) is matched with the upper end of the central expansion sleeve (1).

5. The multi-piece hobbing tool of claim 1, wherein: the machining fixture is characterized by further comprising a gland (11), wherein the gland (11) is located in the upper axial direction of the mandrel (7), and the gland (11) is driven by a hydraulic mechanism to move downwards and is pressed on the end face of a part to be machined.