CN218836110U

CN218836110U - A extrusion tap clamping device for extruding screw thread

Info

Publication number: CN218836110U
Application number: CN202223309996.3U
Authority: CN
Inventors: 周里群; 刘耀; 龙锦辉; 欧阳辉; 刘亚
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-04-11
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses an extrusion screw tap clamping device for extruding screw threads, which consists of a screw tap chuck, an overload protection body, a main shaft, a pressure spring and a pressure-bearing nut; the tap chuck comprises a replaceable jacket and a lantern ring, and the replaceable jacket is fixed on the overload protection passive adaptor; the overload protection body comprises an overload protection passive adapter and an overload protection active adapter, the overload protection passive adapter and the overload protection active adapter are installed on the main shaft, and a pressure spring is arranged at the end part of the overload protection passive adapter. The utility model has the advantages of novel structure processing is simple and convenient, convenient to use, and the commonality is strong, has improved work efficiency, processingquality, the event belongs to an economical and practicality integrative extrusion screw tap clamping device of collection.

Description

A extrusion tap clamping device for extruding screw thread

Technical Field

The utility model belongs to the technical field of the thread machining, a extrusion screw tap clamping device for extruding screw thread is related to particularly.

Background

The internal thread hole of axle type part in-band is a structure that machine part is commonly used, and in the actual production process, the internal thread of large aperture generally uses internal thread lathe tool lathe turning to come out, and the tapping is carried out after the internal thread of small aperture generally is the drilling. The internal thread is machined according to the traditional machining method, the efficiency is low, the surface quality of the thread is poor, the fatigue strength is low, and in addition, the phenomena of screw tap breakage and turning tool tipping can also occur slightly when the internal thread is machined by cutting. If the internal thread is plastically extruded by using the extrusion screw tap, the surface quality is good, the efficiency is high, but the extrusion screw tap does not have a proper clamping device, and the extrusion screw tap cannot be efficiently processed by using the extrusion screw tap.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an extrusion tap clamping device for extruding screw thread can install at the tapping machine

In order to achieve the above object, the present invention provides the following technical solutions:

a clamping device for a thread forming tap. The overload protection device comprises a tap chuck, an overload protection body, a main shaft, a pressure spring and a pressure-bearing nut; the tap chuck comprises a replaceable jacket and a sleeve ring, and the replaceable jacket is fixed on the overload protection passive adaptor; the overload protection body comprises an overload protection passive connector and an overload protection active connector, the overload protection passive connector and the overload protection active connector are fixed on the main shaft, and a pressure spring is arranged at the end part of the overload protection passive connector.

Preferably, the main shaft is provided with a key groove, and the overload protection driving connector is fixed on the main shaft through the matching of a common flat key; the overload protection passive adapter and the shaft sleeve are fixed on the main shaft through threaded connection.

Preferably, the shaft sleeve is in clearance fit with the main shaft; the overload protection adapter and the shaft sleeve are also provided with anti-rotation screws.

Preferably, the pressure-bearing nut is fixed on the main shaft through threaded connection and is connected with one end of the pressure spring.

Preferably, the outer circumferential surface of the overload protection passive adapter is provided with a ball hole, and a steel ball is arranged in the ball hole; the outer circumference of the replaceable clamping sleeve is provided with a groove, and the replaceable clamping sleeve and the overload protection passive adapter are fixed through steel balls.

Preferably, the outer circumferential surface of the replaceable jacket is provided with a pin hole and a groove, a pin is arranged in the pin hole, and the pin is clamped and fixed on the groove through a second spring sleeve.

Preferably, a lantern ring is arranged outside the ball hole of the overload protection passive adapter, and an inner hole of the lantern ring is a stepped hole; the shaft sleeve is in transition fit with the overload protection passive connector; a groove is formed in the overload protection passive connector, and the first spring sleeve is sleeved on the groove.

In the technical scheme, the utility model provides a pair of an extrusion tap clamping device for extruding screw thread has following beneficial effect:

1. the utility model discloses a, for the extrusion screw tap provides special clamping device, can use on numerical control lathe, automatic tapping machine, the commonality is strong.

2. The utility model discloses a, can be applicable to the extrusion screw tap of different diameters, the screw thread of different diameters only needs to be changed and presss from both sides the cover and can realize.

3. The utility model discloses a, can effectually prevent that the extrusion screw tap from breaking because of torsional force is too big, having prolonged the life of screw tap, the extrusion screw thread is plastic working, and torsional force is bigger than the cutting process in the extrusion process.

4. The utility model discloses a, clamping device simple structure is convenient for make, convenient operation. The screw tap can be firmly clamped, and the processing efficiency and the processing quality of the internal thread of the workpiece are greatly improved.

Drawings

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

reference numerals are as follows:

1. a main shaft; 2. a passive adaptor; 3. a shaft sleeve; 4. a screw; 5. common flat bond type A; 6. an active adaptor; 7. a pressure spring; 8. a pressure-bearing nut; 9. steel balls; 10. a first spring ring; 11. a collar; 12. a replaceable sleeve; 13. a plug head; 14. a second spring ring.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the attached drawings.

As shown in fig. 1, the utility model provides an extrusion tap clamping device for extruding threads, which comprises a tap chuck, an overload protection body, a main shaft 1, a pressure spring 7 and a pressure-bearing nut 8; the tap chuck comprises a replaceable jacket 12 and a lantern ring 11, wherein the replaceable jacket 12 is fixed on the overload protection passive adaptor 2; the overload protection body comprises an overload protection passive adaptor 2 and an overload protection active adaptor 6, the overload protection passive adaptor 2 and the overload protection active adaptor 6 are fixed on the main shaft 1, and a pressure spring 7 is arranged at the end part of the overload protection passive adaptor 2. A key groove is arranged on the main shaft 1, and the overload protection active adapter 6 is fixed on the main shaft 1 through a common flat key A-type 5 in a matching way; the overload protection passive adapter 2 and the shaft sleeve 3 are fixed on the main shaft 1 through threaded connection. The shaft sleeve 3 is in clearance fit with the main shaft 1; the overload protection adapter 2 and the shaft sleeve 3 are also provided with anti-rotation screws 4. The pressure-bearing nut 8 is fixed on the main shaft 1 through threaded connection and is connected with one end of the pressure spring. The outer circumferential surface of the overload protection passive adapter 2 is provided with a ball hole, and a steel ball 9 is arranged in the ball hole; the outer circumference of the replaceable jacket 12 is provided with a groove, and the replaceable jacket 12 and the overload protection passive adapter 2 are fixed through steel balls 9. The outer circumference of the replaceable jacket 12 is provided with a pin hole and a groove, a pin 13 is arranged in the pin hole, and the pin is clamped and fixed on the groove through a second spring sleeve 14. A lantern ring 11 is arranged outside the ball hole of the overload protection passive adaptor 2, and the inner hole of the lantern ring 11 is a stepped hole; the shaft sleeve is in transition fit with the overload protection passive connector 2; the overload protection passive connector 2 is provided with a groove, and the first spring sleeve 10 is sleeved on the groove.

When the automatic screw tap clamping device is used, the bearing nut 8 compresses the stress spring 7, the overload protection passive connector 2 is tightly attached to the overload protection active connector 6, the screw tap is clamped on the replaceable clamping sleeve 12, the pin column 13 supports against the screw tap to prevent rotation, and the Morse taper shank on the clamping device main shaft 1 can be directly clamped on a tailstock of a numerical control lathe or a main shaft of an automatic tapping machine to perform internal thread machining. In the process of processing internal threads, the compression amount of the pressure spring 7 is adjusted through the pressure-bearing nut 8, so that the driving adaptor 6 is tightly attached to the driven adaptor 2, torque is transmitted through an attaching surface, and when overload is generated during tapping, the driving adaptor 6 and the driven adaptor 2 slip, so that the extrusion screw tap is protected from being broken.

The utility model has the advantages of novel structure processing is simple and convenient, convenient to use, has replaced the part lathe work screw thread of large aperture, has improved work efficiency, processingquality, the event belongs to a collection economic nature and practicality clamping device as an organic whole, and its big batch of investment must produce positive social and the economic benefits who is showing.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. An extrusion tap clamping device for extruding threads is characterized by comprising a tap chuck, an overload protection body, a main shaft (1), a pressure spring (7) and a pressure-bearing nut (8); the tap chuck comprises a replaceable jacket (12) and a sleeve ring (11), and the replaceable jacket (12) is fixed on the overload protection passive adaptor (2); the overload protection body comprises an overload protection passive connector (2) and an overload protection active connector (6), the overload protection passive connector (2) and the overload protection active connector (6) are fixed on the main shaft (1), and a pressure spring (7) is arranged at the end part of the overload protection passive connector (2).

2. A thread forming tap holding device for thread forming according to claim 1, wherein the spindle (1) is provided with a keyway, and the overload protection driving adapter (6) is fixed on the spindle (1) by a common flat key a-type (5) fit; the overload protection passive adapter (2) and the shaft sleeve (3) are fixed on the main shaft (1) through threaded connection.

3. A tap holder for extruding threads according to claim 2, wherein said sleeve (3) is a clearance fit with the main shaft (1); the overload protection passive adapter (2) and the shaft sleeve (3) are also provided with anti-rotation screws (4).

4. A tapping clamp for extruding a thread according to claim 1 wherein said pressure nut (8) is fixed to the main shaft (1) by a threaded connection to one end of a compression spring.

5. A tap holder for thread extrusion according to claim 1, wherein the overload protection passive adapter (2) is provided with a ball hole in the outer circumferential surface thereof, and a steel ball (9) is provided in the ball hole; the outer circumferential surface of the replaceable jacket (12) is provided with a groove, and the replaceable jacket (12) and the overload protection passive adapter (2) are fixed through steel balls (9).

6. A tapping clamp according to claim 1, wherein the replaceable collet (12) has a pin hole and a groove in its outer circumference, and a pin (13) is disposed in the pin hole and fixed to the groove by a second spring housing (14).

7. A tap holder for thread extrusion according to claim 1, wherein a collar (11) is provided outside the ball hole of the overload protection passive adapter (2), and the inner hole of the collar (11) is a stepped hole; the shaft sleeve is in transition fit with the overload protection passive connector (2); the overload protection passive connector (2) is provided with a groove, and the first spring sleeve (10) is sleeved on the groove.