CN210677209U

CN210677209U - Gear hobbing tool for synchronizer gear hub

Info

Publication number: CN210677209U
Application number: CN201921325403.8U
Authority: CN
Inventors: 刘洪岩
Original assignee: Tianjin Tanhas Technology Co Ltd
Current assignee: Tianjin Tanhas Technology Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-06-05
Anticipated expiration: 2029-08-15

Abstract

The utility model provides a gear hobbing tool for a synchronizer gear hub, which comprises a gland, a workpiece, a bush and a base which are arranged from top to bottom in sequence; a flange is arranged at the lower part of the bushing in an outward extending mode, and a first limiting block and a second limiting block which correspond to the annular groove in the end face of the external spline of the gear hub are respectively arranged on the surface of the flange and the lower surface of the gland; the first limiting block and the second limiting block are both annular convex blocks; the gland and the bush are respectively arranged above and below the end face of the workpiece, and the workpiece is clamped by a pull rod penetrating through the gland and the bush. A synchronous ware tooth hub gear hobbing frock, become the location terminal surface in the gear hub gear hobbing course by the gear hub internal spline terminal surface into by the gear hub external spline terminal surface, simultaneously a synchronous ware tooth hub gear hobbing frock has adopted the gear hub external spline terminal surface to carry out the fixed clamp tightly, and the terminal surface assistance-localization real-time presss from both sides tightly in the gear hub has improved the machining precision of work piece, has reduced the deformation of gear hobbing belly at the processing.

Description

Gear hobbing tool for synchronizer gear hub

Technical Field

The utility model belongs to tooth hub processing field especially relates to a synchronous ware tooth hub gear hobbing frock.

Background

At present, the internal hobbing is mostly positioned by the end face of the internal spline of the gear hub, and because the web of the gear hub product is thinner, elastic deformation is easy to occur in the machining process, and the hobbing precision of the external spline is directly influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a synchronous ware tooth hub gear hobbing frock to improve the machining precision of work piece, reduced the deformation of gear hobbing processing.

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

a gear hobbing tool for a synchronizer gear hub comprises a gland, a bush and a base which are sequentially arranged from top to bottom; the gland, the bush and the base are provided with corresponding threaded holes and are sequentially and fixedly connected through a pull rod;

the upper part of the base is provided with a sleeve for fixing the bushing, and the lower part of the base is fixedly connected with a machine tool through an annular mounting plate;

the bushing is sleeved outside the sleeve on the upper part of the base, the lower part of the bushing is provided with a flange in an outward extending mode, and the upper surface of the flange and the lower surface of the gland are respectively provided with a first limiting block and a second limiting block which correspond to the annular groove on the end face of the external spline of the gear hub;

the first limiting block and the second limiting block are both annular convex blocks; the gland and the bush are respectively arranged above and below the end face of the workpiece, and the workpiece is clamped by a pull rod penetrating through the gland and the bush.

Furthermore, the gland is also provided with a third limiting block for fixing the inner end face of the gear hub

Furthermore, the sleeve part of the bush is provided with a limiting anti-slip layer for fixing the inner end face of the gear hub.

Further, the upper surface of the bushing flange is also provided with a first supporting block for supporting a web plate between the internal spline and the external spline of the gear hub.

Furthermore, the lower surface of the gland is also provided with a second supporting block for supporting a web plate between the internal spline and the external spline of the gear hub.

Furthermore, a plurality of grooves are formed in the upper surface of the flange of the bushing, corresponding threaded holes are formed in the grooves and the base, and the bushing and the base are fixedly connected through positioning bolts which keep the relative positions of the bushing and the base.

Furthermore, a screw rod perpendicular to the pull rod is arranged at the lower end of the pull rod, and the screw rod is a set screw for vertically extruding the pull rod to prevent the pull rod from loosening.

Compared with the prior art, a synchronous ware tooth hub gear hobbing frock have following advantage:

improved the machining precision of work piece, reduced the deformation of hobbing belly at processing

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a gear hobbing tool for a synchronizer hub according to an embodiment of the present invention;

fig. 2 is a schematic view of a synchronizer gear hub hobbing tool gland according to an embodiment of the present invention.

Description of reference numerals:

1-pressing a cover; 11-a second stopper; 12-a third stopper; 13-a second support block; 2-a bushing; 21-a first stopper; 22-a first support block; 23-limiting anti-slip layer; 24-a bolt; 3-a base; 31-set screws; 32-jaw pull nails; 4-a pull rod; 5-workpiece.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A synchronizer gear hub hobbing tool is shown in figures 1 and 2, and comprises a gland 1, a bush 2 and a base 3 which are sequentially arranged from top to bottom; gland 1, bush 2 and base 3 are equipped with the screw hole that corresponds and through pull rod 4 fixed connection in proper order, and 3 lower parts of base are equipped with and correspond SK claw blind rivet 32 with pull rod 4, and claw blind rivet 32 upper portion is equipped with the internal thread hole that corresponds with 4 bottoms of pull rod, 4 upper portions of pull rod are unthreaded pole portion, and the lower part is equipped with the screw thread that corresponds with the internal thread hole, 3 lower parts of base are equipped with the opening that corresponds with the claw blind rivet.

The upper part of the base 3 is provided with a sleeve for fixing the bushing 2, the lower part of the base is provided with an annular mounting plate which extends outwards along the end part, the annular mounting plate is provided with a plurality of threaded holes, the lower part of the fixing plate is provided with a lug corresponding to a groove of a machine tool, and the base is fixedly connected with the machine tool through bolts;

the bush 2 is sleeved inside the sleeve, and the outer diameter of the sleeve is matched with the inner diameter of the bush 2.

The bushing 2 is sleeved outside the sleeve on the upper portion of the base 3, a flange is arranged on the lower portion of the bushing 2 in an outward extending mode, and a first limiting block 21 and a second limiting block 11 which correspond to the annular grooves in the end faces of the external splines of the gear hub are arranged on the upper surface of the flange and the lower surface of the gland 1 respectively; the first limiting block 21 and the second limiting block 11 are both annular convex blocks, the outer diameter of the curved surface of each convex block is slightly smaller than the inner diameter of the annular groove of the external spline end surface of the gear hub, the convex blocks penetrate into the groove to position the gear hub, the gland 1 and the bush 2 are respectively arranged above and below the end surface of the workpiece 5, and the workpiece 5 is clamped by the pull rod 4 penetrating through the gland 1 and the bush 2.

The gland 1 is further provided with a third limiting block 12 used for fixing the inner end face of the gear hub, the third limiting block 12 is a convex block, and the convex block is arranged on the inner side of the inner end face of the gear hub and used for positioning the inner end face of the gear hub.

The outer surface of the bushing 2 is provided with a limiting anti-slip layer 23 used for fixing the inner end face of the gear hub, the bushing 2 is inserted into the central shaft hole of the gear hub, the limiting anti-slip layer 23 is an anti-slip rubber layer with salient points on the outer surface of the bushing 2, the rubber anti-slip layer is matched with the bolt 24, the workpiece 5 is placed on the gear hobbing tool to rotate and move, and errors caused by movement of the workpiece 5 are reduced; simultaneously the rubber skid resistant course be equipped with effectual protection in the tooth hub interior terminal surface spline line, less because of bush 2 and tooth hub direct contact lead to the wearing and tearing of internal spline.

The upper surface of the flange of the bushing 2 and the lower surface of the gland 1 are respectively provided with a first supporting block 22 and a second supporting block 13 which are used for supporting a web plate between an internal spline and an external spline of the gear hub, and the first supporting block 22 and the second supporting block 13 are hard rubber blocks; because the belly board is thinner, produce deformation easily in the gear hub gear hobbing course of working, influenced the precision of external splines processing, first supporting shoe 22 disperses the atress that the web is received with setting up of second supporting shoe 13 is effectual, great reduction web deformation, and when processing a plurality of work pieces simultaneously, the belly pad between work piece and work piece has the support pillow, places the belly atress and produces deformation.

The lower end of the pull rod 4 is provided with a screw rod perpendicular to the pull rod 4, and the screw rod is a set screw 31 which vertically extrudes the pull rod 4 to prevent the pull rod 4 from loosening. The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a synchronous ware tooth hub gear hobbing frock which characterized in that: comprises a gland (1), a workpiece (5), a bushing (2) and a base (3) which are arranged from top to bottom in sequence; the gland (1), the bush (2), the workpiece (5) and the base (3) are provided with corresponding shaft holes and are sequentially and fixedly connected through a pull rod (4);

the upper part of the base (3) is provided with a sleeve for fixing the bushing (2), and the lower part of the base is fixedly connected with a machine tool through an annular mounting plate;

the bushing (2) is sleeved outside the sleeve on the upper portion of the base (3), the lower portion of the bushing (2) extends outwards to be provided with a flange, and the upper surface of the flange and the lower surface of the gland (1) are respectively provided with a first limiting block (21) and a second limiting block (11) corresponding to the annular groove on the end face of the external spline of the gear hub;

the first limiting block (21) and the second limiting block (11) are both annular convex blocks; the gland (1) and the bush (2) are respectively arranged above and below the end face of the workpiece (5), and the workpiece (5) is clamped by a pull rod (4) penetrating through the gland (1) and the bush (2).

2. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the gland (1) is further provided with a third limiting block (12) used for fixing the inner end face of the gear hub, and the third limiting block (12) is an annular convex block.

3. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the outer surface of the bush (2) is provided with a limiting anti-slip layer (23) for fixing the inner end face of the gear hub.

4. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the upper surface of the flange of the bushing (2) is also provided with a first supporting block (22) used for supporting a web plate between the internal spline and the external spline of the gear hub, and the first supporting block (22) is a convex block.

5. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the lower surface of the gland (1) is further provided with a second supporting block (13) used for supporting a web plate between the internal spline and the external spline of the gear hub, and the second supporting block (13) is a protruding block.

6. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the upper surface of the flange of the bushing (2) is provided with a plurality of grooves, corresponding threaded holes are formed in the grooves and the base (3), and the bushing (2) is fixedly connected with the base (3) through positioning bolts (24) which keep the relative positions of the bushing (2) and the base (3).

7. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the pull rod fixing device is characterized in that claw blind rivets (32) used for fixing the pull rod are arranged on the lower portion of the base (3), inner threaded holes corresponding to the bottoms of the pull rods (4) are formed in the upper portions of the claw blind rivets (32), threads corresponding to the inner threaded holes are arranged on the pull rods (4), and openings corresponding to the claw blind rivets are formed in the lower portion of the base (3).

8. The synchronizer gear hub hobbing tool according to claim 1, characterized in that: the cylindrical surface of the base is provided with a groove vertical to the pull rod (4), and a set screw (31) used for fixing the pull rod (4) is arranged in the groove.