CN201115876Y

CN201115876Y - Lathe precision finishing expansion force central spindle

Info

Publication number: CN201115876Y
Application number: CNU2007200321775U
Authority: CN
Inventors: 俞宏林; 徐春梅
Original assignee: Shaanxi Baocheng Aviation Instrument Co Ltd
Current assignee: Shaanxi Baocheng Aviation Instrument Co Ltd
Priority date: 2007-06-12
Filing date: 2007-06-12
Publication date: 2008-09-17
Anticipated expiration: 2017-06-12

Abstract

The utility model discloses a lathe precision finishing expanding mandrel used as an internal aperture locating expanding cramping apparatus when a lathe operator processes component parts on the lathe, which comprises a cramping apparatus body, wherein, one end of the cramping apparatus body is of a holding part, and the other end is of a deformation expanding end; the outside of the deformation expanding end is of a locating part and an expanding clamping part, and a stress groove is arranged between the locating part and the expanding cramping part; an expanding screw is rotationally connected inside the deformation expanding end; the screw cover part of the expanding screw is of a cone platform shape. A second expanding mandrel consists of three parts: an expanding cramping apparatus body, two expanding plungers and a cone-shaped expanding screw. The lathe precision finishing expanding mandrel solves the problem that the geometric tolerance precision is difficult to be ensured when the lathe operator processes the common expanding mandrel with high geometric tolerance requirement on the component parts of the internal aperture, and the expanding mandrel needing the component parts which need various sized internal aperture for locating can be produced according to the novel expanding mandrel.

Description

Lathe Precision Machining tension mandrel

Technical field

The invention belongs to mechanical manufacturing field, specifically is turner when processing spare part on lathe, employed a kind of endoporus locating tensioning anchor clamps.

Background technology

Spare part with positions such as endoporus location turning processing excircles, the turning attachment that is adopted was that tension clamps and the common tension mandrel (seeing accompanying drawing 1 and Fig. 2) that is positioned at same position in the past, if the position that is processed adopts this tension mandrel just to be difficult to guarantee its required precision when having higher morpheme to require with the location endoporus.

Summary of the invention

The utility model purpose provides a kind of lathe Precision Machining tension mandrel, and to overcome in the past location, tensioner when the same position, tensioner supports the affected shortcoming of positioning accuracy.

Specifically, the technical scheme of technical solution problem has two kinds:

First kind of scheme: lathe Precision Machining tension mandrel, it is to have clamp body 4, and clamp body 4 one ends are clamping part 3, and an other end is distortion tensioner end; Distortion tensioner end is outside to be place 2, location and tension clamping place 1, and has the stress groove between place 2, location and tension clamping place 1; Distortion tensioner end inside is connected with tensioner screw 5, and the nail cap position of tensioner screw 5 is the frustum shape.

Second kind of technical scheme: lathe Precision Machining tension mandrel, it is to have clamp body 4, and clamp body 4 one ends are clamping part 3, and an other end is distortion tensioner end; Being out of shape the tensioner end outside is place 2, location and tension clamping place 1, and it is that the clamp body middle part has a groove and interior two openings of groove are placed with tension piston 6 that tension steps up to locate 1; Distortion tensioner end inside is connected with taper tensioner screw 7, and the ailhead position of taper tensioner screw 7 is a cone shape.

Tension piston 6 one ends are and the identical tangent inclined-plane of the nail head circle of position cone-shaped of taper tensioner screw 7.

The utility model effect: because this tension mandrel locating surface and tensioner face be not or not same position, part is located by the place, location in clamping process, tensioner place support fixation part, location, tensioner had been overcome in the past when same position, tensioner supports the affected shortcoming of positioning accuracy, thereby can reach the requirement of hi-Fix support fixation part, thereby satisfy the high-precision part processing request.

Therefore, the utility model has solved turner and has located with endoporus, when having higher morpheme to require spare part to endoporus with common tension mandrel processing, be difficult to guarantee the difficult problem of its accuracy of form and position, need the required tension mandrel of spare part of different size endoporus location, all can manufacture and design according to this novel tension mandrel.

Description of drawings

Fig. 1 is existing common tension mandrel structural representation.

Fig. 2 is a tensioner screw schematic diagram among Fig. 1.

Fig. 3 is first kind of technical scheme structural representation of the utility model.

Fig. 4 is a tensioner screw schematic diagram among Fig. 3.

Fig. 5 is second kind of technical scheme structural representation of the utility model.

Fig. 6 is a tension piston schematic diagram among Fig. 5.

Fig. 7 is a tension piston schematic diagram among Fig. 5.

The specific embodiment:

Accompanying

drawing

3,4 has provided first kind of technical scheme specific embodiment of the utility model.

First kind of tension mandrel wherein is made up of tension clamp body and tensioner screw two parts.Clamp body 4 one ends are clamping part 3, and an other end is distortion tensioner end; Distortion tensioner end is outside to be place 2, location and tension clamping place 1, and has the stress groove between place 2, location and tension clamping place 1; Distortion tensioner end inside is connected with tensioner screw 5, and the nail cap position of tensioner screw 5 is the frustum shape.

Fig. 5 and Fig. 6 have provided the specific embodiment of second kind of tension mandrel.It is made up of tension clamp body, two tension pistons and taper tensioner screw three parts.Clamp body 4 one ends are clamping part 3, and an other end is distortion tensioner end; Being out of shape the tensioner end outside is place 2, location and tension clamping place 1, and it is that the clamp body middle part has a groove and interior two openings of groove are placed with tension piston 6 that tension steps up to locate 1; Distortion tensioner end inside is connected with taper tensioner screw 7, and the ailhead position of taper tensioner screw 7 is a cone shape.Tension piston 6 one ends are and the identical tangent inclined-plane of the nail head circle of position cone-shaped of taper tensioner screw 7

Two kinds of structure tension mandrels all be the tension body by screw thread and tensioner screw attachment, and the cooperation that screws the degree of depth and the conical surface by screw thread produces expanding force and comes the tensioner part.At first secondly the clamping part clamping that passes through this tension mandrel according to the locating hole size situation of part to be processed, joins the car locating surface on lathe, satisfy positioning requirements, clamping parts then, and screw by the tensioner screw, the screw inclined-plane produces support force and promotes the tensioner part, carries out part processing at last.

Claims

1. lathe Precision Machining tension mandrel is characterized in that having clamp body (4), and clamp body (4) one ends are clamping part (3), and an other end is distortion tensioner end; Distortion tensioner end is outside to be location place's (2) and tension clamping place (1), and has the stress groove between place, location (2) and tension clamping place (1); Distortion tensioner end inside is connected with tensioner screw (5), and the nail cap position of tensioner screw (5) is the frustum shape.

2. lathe Precision Machining tension mandrel is characterized in that having clamp body (4), and clamp body (4) one ends are clamping part (3), and an other end is distortion tensioner end; Distortion tensioner end is outside to be location place's (2) and tension clamping place (1), and tension steps up to locate (1), and two openings are placed with tension piston (6) in a groove and the groove for the clamp body middle part has; Distortion tensioner end inside is connected with taper tensioner screw (7), and the ailhead position of taper tensioner screw (7) is a cone shape.

3. lathe Precision Machining tension mandrel according to claim 2 is characterized in that tension piston (6) one ends are and the identical tangent inclined-plane of the nail head circle of position cone-shaped of taper tensioner screw (7).