CN210359341U

CN210359341U - Tension mandrel for clamping thin-wall hollow part

Info

Publication number: CN210359341U
Application number: CN201920998837.8U
Authority: CN
Inventors: 王银银; 张建勋; 隋天龙; 吴旭; 刘晶
Original assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Current assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-04-21
Anticipated expiration: 2029-06-29

Abstract

The utility model discloses a power dabber that rises for hollow part of clamping thin wall, including screw thread tailstock (1), tapering chuck (4), elastic head (5), its characterized in that: the thread tailstock (1) is connected with the taper chuck (4) through a spring (2), the elastic head (5) is installed in an internal thread hole B (15) at the front end of the taper chuck (4) and is attached to the end face of the taper chuck (4), the countersunk head screw (6) sequentially penetrates through the elastic head (5), the taper chuck (4) is internally connected with an internal thread hole A (10) at the front end of the thread tailstock (1), and an external conical surface (20) at the head part of the countersunk head screw (6) is attached to an internal conical surface (17) of the elastic head (5). The utility model discloses simple structure, high-efficient stable, the location is accurate, high-quality reliable, is fit for the using widely of thin wall hollow part clamping.

Description

Tension mandrel for clamping thin-wall hollow part

Technical Field

The utility model belongs to the technical field of the clamping device, a power dabber that rises for hollow part of clamping thin wall is related to particularly.

Background

The thin-wall hollow parts are very common in the production process, and the machining and clamping are difficult due to the small thickness of the wall of the thin-wall hollow parts. During turning, the conventional mode of clamping the outer circle of the part (such as an elastic snap spring of a numerical control lathe) is adopted for clamping, so that the problems of clamping deformation, inaccurate turning positioning and the like are often caused, the turned product is unqualified, the processing efficiency of the product is low, and the like, and the clamping requirement of the thin-wall hollow part cannot be met.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned shortcoming and the power dabber that rises that is used for clamping thin wall hollow part that provides of a simple structure, high-efficient stable, location accuracy, high-quality reliable.

The utility model discloses the purpose and solve its main technical problem and adopt following technical scheme to realize:

the utility model discloses a power dabber that rises for hollow part of clamping thin wall, including screw thread tailstock, tapering chuck, elastic head, wherein: the screw thread tailstock is connected through the spring with the tapering chuck, the spring adorns in spring groove A and the spring groove B that the cooperation set up on screw thread tailstock and tapering chuck, the both sides of spring are connected on the fixed pin, the fixed pin of both sides is installed respectively in pinhole A and the pinhole B that set up on screw thread tailstock and the tapering chuck, the elastic head is installed in the internal thread hole B of tapering chuck front end and is pasted the terminal surface of tight tapering chuck, countersunk screw runs through the elastic head in proper order, connect in the internal thread hole A of screw thread tailstock front end in the tapering chuck, the internal conical surface of elastic head is hugged closely to the external conical surface of countersunk screw head portion.

The tension mandrel for clamping the thin-wall hollow part is characterized in that: the thread tailstock is internally provided with an internal thread hole A and a straight hole in sequence from front to back, and the outer side of the thread tailstock is provided with a tail external thread.

The tension mandrel for clamping the thin-wall hollow part is characterized in that: an internal thread hole B and a stepped hole are sequentially arranged in the taper chuck from front to back.

The tension mandrel for clamping the thin-wall hollow part is characterized in that: the elastic head is internally provided with an inner hole, the head of the inner hole is provided with an inner conical surface, the tail of the elastic head is provided with an external thread head, and the external thread head is matched with the internal thread hole B.

The tension mandrel for clamping the thin-wall hollow part is characterized in that: the head of the countersunk head screw is provided with an external conical surface, the tail of the countersunk head screw is provided with an external thread rod, and the external thread rod is matched with the internal thread hole A.

The tension mandrel for clamping the thin-wall hollow part is characterized in that: the head of the elastic head consists of three flaps.

Compared with the prior art, the utility model obvious advantage and beneficial effect have. According to the technical scheme, the utility model discloses an in the power dabber that rises for clamping thin wall hollow part, the screw thread tailstock is connected through the spring with the tapering chuck, the spring is adorned in spring groove A and the spring groove B that cooperate setting on screw thread tailstock and tapering chuck, the both sides of spring are connected on the fixed pin, the fixed pin of both sides is installed respectively in pin hole A and the pin hole B that set up on screw thread tailstock and tapering chuck, after having realized the clamping on the one hand, make the power dabber that rises reconvert through the elasticity of spring, loosen the part, on the other hand is convenient for dismantle the change; the elastic head is arranged in the internal thread hole B at the front end of the taper chuck and is tightly attached to the end face of the taper chuck, the countersunk screw sequentially penetrates through the elastic head and the taper chuck and is connected to the internal thread hole A at the front end of the thread tailstock, the external conical surface at the head of the countersunk screw is tightly attached to the internal conical surface of the elastic head, so that the axial force applied to the thread tailstock is conveniently transmitted to the countersunk screw, and the internal conical surface of the elastic head is further extruded to generate radial expansion force, so that the inner hole of a part arranged on the elastic head is supported, and the purpose of clamping the part is achieved; the head of the elastic head consists of three petals, so that an inner hole of the clamping part is conveniently opened. In a word, the utility model discloses simple structure, high-efficient stable, the location is accurate, high-quality reliable, is fit for using widely of thin wall hollow part clamping.

Drawings

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

FIG. 2 is a schematic structural view of a screw tail seat;

FIG. 3 is a cross-sectional view taken along line AA of FIG. 2;

FIG. 4 is a schematic structural view of a taper chuck;

FIG. 5 is a cross-sectional view taken along line BB of FIG. 4;

FIG. 6 is a schematic structural diagram of the elastic head;

FIG. 7 is a cross-sectional view taken along line CC of FIG. 6;

FIG. 8 is a schematic structural view of a countersunk head screw;

fig. 9 is a usage state diagram of the present invention.

The labels in the figure are:

1. a threaded tailstock; 2. a spring; 3. a fixing pin; 4. a taper chuck; 5. an elastic head; 6. countersunk head screws; 7. a pin hole A; 8. a spring slot A; 9. tail external threads; 10. an internal threaded hole A; 11. a straight hole; 12. a spring groove B; 13. a pin hole B; 14. a stepped hole; 15. an internal threaded bore B; 16. an external thread head; 17. an inner conical surface; 18. an inner bore; 19. an externally threaded rod; 20. an outer conical surface.

Detailed Description

The embodiments, structures, features and effects of the expanding mandrel for clamping thin-walled hollow parts according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 8, the utility model discloses a power dabber that rises for hollow part of clamping thin wall, including screw thread tailstock 1, tapering chuck 4, elastic head 5, wherein: the thread tailstock 1 is connected with the taper chuck 4 through the spring 2, the spring 2 is installed in a spring groove A8 and a spring groove B12 which are arranged on the thread tailstock 1 and the taper chuck 4 in a matched mode, two sides of the spring 2 are connected onto the fixing pin 3, the fixing pin 3 on two sides are installed in a pin hole A7 and a pin hole B13 which are arranged on the thread tailstock 1 and the taper chuck 4 respectively, the elastic head 5 is installed in an internal thread hole B15 at the front end of the taper chuck 4 and clings to the end face of the taper chuck 4, the countersunk head screw 6 penetrates through the elastic head 5 sequentially, the taper chuck 4 is connected into an internal thread hole A10 at the front end of the thread tailstock 1, and the outer conical surface 20 at the head of the countersunk head screw 6 clings to the inner conical surface 17 of. The thread tailstock 1 is internally provided with an internal thread hole A10 and a straight hole 11 from front to back in sequence, and the outer side of the thread tailstock 1 is provided with a tail external thread 9. The tapered chuck 4 is internally provided with an internal threaded hole B15 and a stepped hole 14 from front to back in sequence. An inner hole 18 is formed in the elastic head 5, an inner conical surface 17 is arranged at the head of the inner hole 18, an external thread head 16 is arranged at the tail of the elastic head 5, and the external thread head 16 is matched with the internal thread hole B15. The head of the countersunk head screw 6 is provided with an external conical surface 20, the tail of the countersunk head screw is provided with an external thread rod 19, and the external thread rod 19 is matched with the internal thread hole A10. The head of the elastic head 5 consists of three flaps.

When the thin-wall hollow part clamping device is used, referring to fig. 9, the expansion mandrel is arranged on a main shaft of a numerical control lathe through the tail external thread 9, the thin-wall hollow part to be clamped is sleeved on the elastic head 5, the main shaft of the numerical control lathe pulls the thread tailstock 1 to generate an axial force F1, the thread tailstock 1 drives the countersunk head screw 6 to generate an axial force F2, and the outer conical surface 20 of the countersunk head screw 6 extrudes the inner conical surface 17 of the elastic head 5 to generate a radial expansion force F3, so that the inner hole of the thin-wall hollow part arranged on the elastic head 5 is supported, and the purpose of clamping the part is achieved. After the machining is finished, the expansion mandrel is restored to the original state through the elastic force of the spring 2, and then the thin-wall hollow part can be loosened. The utility model discloses simple structure, high-efficient stable, the location is accurate, high-quality reliable, is fit for the using widely of thin wall hollow part clamping.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention.

Claims

1. The utility model provides a power dabber that rises for clamping thin wall hollow part, includes screw thread tailstock (1), tapering chuck (4), elastic head (5), its characterized in that: the thread tailstock (1) is connected with the taper chuck (4) through a spring (2), the spring (2) is arranged in a spring groove A (8) and a spring groove B (12) which are arranged on the thread tailstock (1) and the taper chuck (4) in a matching way, two sides of the spring (2) are connected on a fixed pin (3), the fixed pins (3) at two sides are respectively arranged in a pin hole A (7) and a pin hole B (13) which are arranged on the thread tailstock (1) and the taper chuck (4), an elastic head (5) is arranged in an internal thread hole B (15) at the front end of the taper chuck (4) and clings to the end surface of the taper chuck (4), a countersunk head screw (6) sequentially penetrates through the elastic head (5) and the interior of the taper chuck tailstock (4) and is connected in an internal thread hole A (10) at the front end of the thread tailstock (1), the outer conical surface (20) of the head part of the countersunk head screw (6) is tightly attached to the inner conical surface (17) of the elastic head (5).

2. The tension mandrel for clamping the thin-wall hollow part as claimed in claim 1, wherein: an internal thread hole A (10) and a straight hole (11) are sequentially arranged in the screw thread tailstock (1) from front to back, and a tail external thread (9) is arranged on the outer side of the screw thread tailstock (1).

3. The tension mandrel for clamping the thin-wall hollow part as claimed in claim 1, wherein: an internal threaded hole B (15) and a stepped hole (14) are sequentially arranged in the taper chuck (4) from front to back.

4. The tension mandrel for clamping the thin-wall hollow part as claimed in claim 1, wherein: an inner hole (18) is formed in the elastic head (5), an inner conical surface (17) is arranged at the head of the inner hole (18), an external thread head (16) is arranged at the tail of the elastic head (5), and the external thread head (16) is matched with the internal thread hole B (15).

5. The tension mandrel for clamping the thin-wall hollow part as claimed in claim 1, wherein: the head of the countersunk head screw (6) is provided with an external conical surface (20), the tail of the countersunk head screw is provided with an external thread rod (19), and the external thread rod (19) is matched with the internal thread hole A (10).

6. The tension mandrel for clamping the thin-wall hollow part as claimed in claim 1, wherein: the head of the elastic head (5) consists of three flaps.