CN218855790U

CN218855790U - Wire coiling and thread turning jig

Info

Publication number: CN218855790U
Application number: CN202222430251.6U
Authority: CN
Inventors: 朱俊飞; 闫培龙; 汤聪
Original assignee: Hangzhou Qianhong Precision Machinery Co ltd
Current assignee: Hangzhou Qianhong Precision Machinery Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-04-14
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses a dish silk car screw thread tool relates to chuck processing technology field. The utility model discloses the technique is used for centre gripping bevel gear, including overcoat, endotheca and steel ball, overcoat front end center is equipped with the tool feed hole, the tool feed hole is equipped with the chamfer that the aperture increases from the extroversion inwards, threaded connection is passed through with the excircle of endotheca at the rear portion of overcoat hole, terminal surface and overcoat hole respectively with the steel ball butt before the endotheca, the steel ball is along overcoat hole evenly distributed at least three and with the work piece butt on the chamfer. Through the utility model discloses can pinpoint bevel gear, promote bevel gear hole and terminal surface machining precision.

Description

Wire coiling and thread turning jig

Technical Field

The utility model relates to a chuck processing technology field particularly, relates to a wire rod car screw thread tool.

Background

When the end face of the bevel gear is coiled with threads, the central line of the coiled thread spiral line is required to be superposed with the central line of the inner hole, and the coiled thread processed in the way can rotate around one central line. In the machining process, after blank heat treatment, the bevel gear is machined, firstly, an inner hole and an end face which are used as positioning references are machined to be alive according to a conventional positioning and clamping method, then, the inner hole and the end face are used as the positioning references, a positioning mandrel penetrates through the inner hole and the end face to be positioned and clamped, the machined tooth face is alive, and finally, the tooth face is subjected to nitriding treatment. The gear produced by the method has larger error accumulation and heat treatment deformation which cannot be repaired, so that the runout of the end face of the gear hole relative to the center of the hole and the radial runout of the gear ring relative to the center of the hole are out of tolerance, and the precision requirement of the gear cannot be met.

The conical gear inner hole finishing device with the publication number of CN200984691 comprises an outer sleeve, an inner sleeve and a steel ball, wherein the inner sleeve presses the conical gear into the outer sleeve through the steel ball. The outer diameter of the outer sleeve is clamped by the chuck, the inner hole of the gear can be turned, bored or ground after alignment, however, the device cannot finish machining the end face of the gear, and in order to solve the problem, a clamp is required to be applied to clamp and position the bevel gear with the formed tooth surface, and finish machining of the inner hole and the end face is carried out simultaneously to ensure the precision of the bevel gear.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to in the background art, a wire rod car screw tool is provided, through the utility model discloses can pinpoint bevel gear, promote bevel gear hole and terminal surface machining precision.

To achieve the above purpose, the technical solution of the utility model is as follows: the utility model provides a wire coiling screw thread tool for the centre gripping work piece, includes overcoat, endotheca and steel ball, overcoat front end center is equipped with the tool feed hole, the tool feed hole is equipped with the chamfer that the aperture increases from the extroversion inwards, threaded connection is passed through with the excircle of endotheca to the rear portion of overcoat hole, terminal surface and overcoat hole respectively with the steel ball butt before the endotheca, the steel ball is along at least three and with the work piece butt on the chamfer of overcoat hole evenly distributed.

By adopting the technical scheme, the jig is used for clamping and positioning the bevel gear with the formed tooth surface, and the inner hole and the end surface are finely processed, so that the processing precision of the bevel gear is ensured.

The utility model discloses further set up to: the center of the inner sleeve is provided with a threaded hole, a screwing bolt is matched in the threaded hole, and a tensioning disc matched with the inner hole of the workpiece to tension and position the workpiece is arranged between the inner sleeve and the screwing bolt.

By adopting the technical scheme, the positioning accuracy of the bevel gear is further improved, and the gear precision is improved.

The utility model discloses further set up to: and the opposite surfaces of the inner sleeve and the screwing bolt are provided with step surfaces for clamping and positioning the central part of the tensioning disc.

Through adopting above-mentioned technical scheme, conveniently carry out the clamping to the tight dish that rises.

The utility model discloses further set up to: one side of the tooth surface of the inner hole of the workpiece is provided with a step surface for clamping and positioning the end part of the tension disc

The utility model discloses further set up to: the rear end face of the inner sleeve (3) is coaxially provided with a cylindrical groove.

Through adopting above-mentioned technical scheme, the lathe jack catch of being convenient for carries out the clamping to the tool.

The utility model discloses further set up to: screw holes are uniformly distributed on the rear end face of the inner sleeve.

By adopting the technical scheme, the inner sleeve can be loosened by screwing the bolt in the bolt hole as a handle.

The utility model discloses further set up to: the front part of the inner hole of the outer sleeve is provided with a first inner circular surface with the aperture smaller than the rear part, and the front part of the outer circle of the inner sleeve is provided with a first outer circular surface with the aperture smaller than the first inner circular surface.

By adopting the technical scheme, the inner sleeve is convenient to be arranged in the outer sleeve, and the outer sleeve and the inner sleeve are ensured to press the steel ball against the conical tooth surface of the workpiece.

The utility model discloses further set up to: the circumferential position of the head part of the screwing bolt is provided with stripes.

Through adopting above-mentioned technical scheme, be convenient for screw the unscrewing to the tightening bolt.

The utility model discloses further set up to: the end face of the head of the screwing bolt is provided with a central hole.

By adopting the technical scheme, the centering of the machine tool center is facilitated.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

under the combined action of the outer sleeve, the inner sleeve, the steel balls, the screwing bolt and the tensioning disc, the bevel gear with the formed tooth surface is clamped and positioned, and meanwhile, the finish machining of the inner hole and the end surface of the bevel gear is completed, so that the machining precision of the bevel gear is ensured.

Drawings

FIG. 1 is a sectional view showing the overall structure of the present embodiment;

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

FIG. 3 is a cross-sectional view of the inner sleeve;

FIG. 4 is a cross-sectional view of the turn-on bolt;

the reference numerals in the drawings mean: 1. a jacket; 11. chamfering; 12. a cutter feeding hole; 13. a first internal thread; 14. a first inner circular surface; 2. a steel ball; 3. an inner sleeve; 31. a first external thread; 32. screw holes; 33. a second inner circular surface; 34. a second internal thread; 35. a first outer circular surface; 4. screwing the bolt; 41. a second external thread; 42. stripes; 43. a central bore; 5. a tensioning disc; 6. a machine tool jaw; 7. and (5) a workpiece.

Detailed Description

The following detailed description of the present invention will be provided in conjunction with fig. 1 to 4, so as to make it clear for those skilled in the art how to practice the present invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.

As shown in fig. 1 to 4, a wire coiling and threading jig is used for clamping a workpiece 7 and comprises an outer sleeve 1, an inner sleeve 3 and a steel ball 2, wherein a cutter feeding hole 12 is formed in the center of the front end of the outer sleeve 1, a chamfer 11 with the diameter increasing from outside to inside is formed in the cutter feeding hole 12, the rear portion of an inner hole of the outer sleeve 1 is connected with the outer circle of the inner sleeve 3 through threads, the front end face of the inner sleeve 3 and the inner hole of the outer sleeve 1 are respectively abutted to the steel ball 2, and at least three steel balls 2 are uniformly distributed along the inner hole of the outer sleeve 1 and abut the workpiece 7 to the chamfer 11.

The inclined plane matched with the inner hole chamfer 11 of the outer sleeve 1 on the side wall of the workpiece 7 ensures that the workpiece 7 is clamped in the outer sleeve 1 when the jig clamps and the end face of the workpiece 7 is exposed in the range of the feed hole 12 so as to be convenient for processing.

The center of the inner sleeve 3 is provided with a threaded hole, a screwing bolt 4 is matched in the threaded hole, and a tensioning disc 5 which is matched with an inner hole of a workpiece 7 to tension and position the workpiece 7 is arranged between the inner sleeve 3 and the screwing bolt 4.

And a step surface for clamping and positioning the tensioning disc 5 is arranged on the opposite surface of the inner sleeve 3 and the screwing bolt 4.

And a step surface for clamping and positioning the end part of the tension disc 5 is arranged on one side of the tooth surface of the inner hole of the workpiece 7.

The rear end face of the inner sleeve 3 is coaxially provided with a cylindrical groove.

Screw holes 32 are uniformly distributed on the rear end face of the inner sleeve 3.

The front part of the inner hole of the outer sleeve 1 is provided with a first inner circular surface 14 with the aperture smaller than that of the rear part, and the front part of the outer circle of the inner sleeve 3 is provided with a first outer circular surface 35 with the aperture smaller than that of the first inner circular surface 14.

The circumferential position of the head of the screwing bolt 4 is provided with a stripe 42.

The end face of the head of the screwing bolt 4 is provided with a central hole 43.

The utility model discloses a use of tool does: the first internal thread 13 at the threaded end of the outer sleeve 1 is placed on the platform upwards, the workpiece 7 is placed in the outer sleeve, the side wall of the workpiece 7 is in contact with the chamfer 11 of the cutting feed hole 12, the tensioning disc 5 is placed in the inner hole of the workpiece 7, the steel balls 2 are uniformly placed between the inner hole of the outer sleeve 1 and the tooth surface of the workpiece 7, the first external thread 31 of the inner sleeve 3 is inserted into the threaded end of the outer sleeve 1 and screwed until the front end face of the inner sleeve is abutted to the steel balls 2, the outer sleeve 1 is placed in an overturning manner, the second external thread 41 of the screwing bolt 4 is screwed in alignment with the second internal thread 34 of the inner sleeve 3, the tensioning disc 5 is used for tensioning the workpiece 7 under the pressing of the inner sleeve 3 and the screwing bolt 4, and finally the second internal circular surface 33 is clamped on the machine tool clamping jaw 6 to perform finish machining on the end face and the inner hole of the workpiece 7.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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 wire coiling screw thread turning jig for centre gripping work piece (7), its characterized in that, including overcoat (1), endotheca (3) and steel ball (2), overcoat (1) front end center is equipped with cutter feeding hole (12), cutter feeding hole (12) are equipped with chamfer (11) that the aperture increases from outside to inside, threaded connection is passed through with the excircle of endotheca (3) to the rear portion of overcoat (1) hole, terminal surface and overcoat (1) hole respectively with steel ball (2) butt before endotheca (3), steel ball (2) are along overcoat (1) hole evenly distributed at least three and with work piece (7) butt on chamfer (11).

2. The wire coiling threading jig of claim 1, wherein: the center of the inner sleeve (3) is provided with a threaded hole, a screwing bolt (4) is arranged in the threaded hole in a matching manner, and a tensioning disc (5) which is matched with the inner hole of the workpiece (7) to tension and position the workpiece (7) is arranged between the inner sleeve (3) and the screwing bolt (4).

3. The wire coiling threading jig of claim 2, wherein: and the opposite surfaces of the inner sleeve (3) and the screwing bolt (4) are provided with step surfaces for clamping and positioning the central part of the tensioning disc (5).

4. The wire coiling threading jig of claim 2, wherein: one side of the tooth surface of the inner hole of the workpiece (7) is provided with a step surface for clamping and positioning the end part of the tension disc (5).

5. The wire coiling threading jig of claim 1, wherein: the rear end face of the inner sleeve (3) is coaxially provided with a cylindrical groove.

6. The wire coiling threading jig of claim 1, wherein: screw holes (32) are uniformly distributed on the rear end face of the inner sleeve (3).

7. The wire coiling threading jig of claim 1, characterized in that: the front part of the inner hole of the outer sleeve (1) is provided with a first inner circular surface (14) with the aperture smaller than the rear part, and the front part of the outer circle of the inner sleeve (3) is provided with a first outer circular surface (35) with the aperture smaller than the first inner circular surface (14).

8. The wire coiling threading jig of claim 2, wherein: stripes (42) are arranged at the circumferential position of the head of the screwing bolt (4).

9. The wire coiling threading jig of claim 2, wherein: the end face of the head of the screwing bolt (4) is provided with a central hole (43).