CN101927307A

CN101927307A - Elastic positioning device of thread rolling workpiece

Info

Publication number: CN101927307A
Application number: CN 201010249368
Authority: CN
Inventors: 葛明吉; 王滨
Original assignee: WUXI SAIKE ELECTRICAL CO Ltd
Current assignee: WUXI SAIKE ELECTRICAL CO Ltd
Priority date: 2010-08-10
Filing date: 2010-08-10
Publication date: 2010-12-29
Anticipated expiration: 2030-08-10
Also published as: CN101927307B

Abstract

The invention discloses an elastic positioning device of a thread rolling workpiece. The device comprises a fixed supporting seat which is arranged and fixed on a lower guide rail of a machine tool and can synchronously move with a lower thread rolling plate, wherein an upper thread rolling plate is arranged corresponding to the upper side of the lower thread rolling plate; and a V-shaped positioning block made of rubber is arranged on the fixed supporting seat, and the mounting height of the V-shaped positioning block can guarantee that the central height H of the workpiece is exactly consistent with the heights of the front tip and the rear tip of the machine tool when the workpiece is placed in the V-shaped block. In the elastic positioning device of the thread rolling workpiece, a V-shaped slot is used for positioning, meanwhile, the elasticity of the rubber is utilized; the left supporting edge of the V-shaped positioning block generates elastic deformation under the compression of the workpiece and cannot stop the workpiece from passing by; and after the V-shaped positioning block is separated from the workpiece, the left supporting return to the original shape under the action of elasticity to prepare the clamping and positioning of a second workpiece. The device has the advantages of simple structure, lower cost, accurate positioning and high reliability.

Description

Elastic positioning device of thread rolling workpiece

Technical field

The present invention relates to a kind of machining auxiliary locator, particularly relate to a kind of elastic positioning device of thread rolling workpiece.

Background technology

At present, small-sized worm shaft is widely used on the household electrical appliance series products, worm tooth needs to carry out rolling with thread rolling machine on it, but this part length and diameter are all very little, and the centre bore at two ends is also very little, therefore when clamping, the workman will bend the waist labour contractor and put in and see, hand takes workpiece to put in centre bore, and most critical is that the centre bore at two ends must be aimed at (if do not aim at, process, will damage screw plate or equipment), this moment, hand can't unclamp, and an other hand will be opened the top folder of living, after aligning holds out against, just can loose one's grip.

The operating efficiency of obvious manual installation way is extremely low, can not satisfy large batch of production, therefore people also research and develop and design positioner in the rolling thread rolling process, see also shown in Figure 1, Fig. 1 is the structural representation of traditional elastic positioning device of thread rolling workpiece, comprise hold-down support 12, its side that is mounted on down screw plate 10 can be with following screw plate 10 same moved further, the corresponding top of screw plate 10 down is provided with screw plate 11, and described hold-down support 12 is provided with the first spring pin 13 and the second spring pin 14, distance between the described first spring pin 13 and the second spring pin 14 cooperates the diameter setting of workpiece 15, during the rolling thread rolling, following

screw plate

10 and 11 relative motions of last screw plate, the first spring pin 13 of workpiece 15 extruding simultaneously makes its compression, after workpiece passes through, the first spring pin 13 is upspring, and prepares next place work piece 15.

It is not too flexible that but the spring pin of this mechanical type positioner moves, especially after the long wearing and tearing of working time, if about can not be flexibly, when screw plate moves down, will block, and then damage screw plate, in addition other equipment, poor reliability.

Summary of the invention

The object of the present invention is to provide a kind of elastic positioning device of thread rolling workpiece, it has simple in structure, accurate positioning, high reliability features.

The objective of the invention is to be achieved through the following technical solutions:

A kind of elastic positioning device of thread rolling workpiece, it comprises hold-down support, described hold-down support is mounted on the lower guideway of lathe, can with the same moved further of following screw plate, the corresponding top of screw plate down is provided with screw plate, wherein, described hold-down support is provided with elasticity " V " type locating piece, and the setting height(from bottom) of described " V " type locating piece is just in time consistent with pitch of centers before and after the lathe for guaranteeing that workpiece is placed on " V " type piece centre-height.

Described " V " type locating piece is made by the good elastomeric material of elasticity.

Beneficial effect of the present invention is, described elastic positioning device of thread rolling workpiece is provided with the good rubber of elasticity " V " type locating piece on hold-down support, utilize " V " type groove location, has utilized the elasticity of rubber simultaneously, support edge, " V " type locating piece left side strain under the workpiece compressing, can not stop workpiece to pass through, after breaking away from workpiece, under elastic reaction, support edge, the left side shape that resiles, prepare the clamping location of second workpiece, not only simple in structure, cost is lower; And accurate positioning, the reliability height.

Description of drawings

With embodiment the present invention is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the structural representation of traditional elastic positioning device of thread rolling workpiece,

Fig. 2 is the structural representation of elastic positioning device of thread rolling workpiece of the present invention,

Fig. 3 is the vertical view of elastic positioning device of thread rolling workpiece of the present invention.

The specific embodiment

Please refer to Fig. 2 to shown in Figure 3, Fig. 2 is the structural representation of elastic positioning device of thread rolling workpiece of the present invention, and Fig. 3 is the vertical view of elastic positioning device of thread rolling workpiece of the present invention.

In present embodiment, a kind of elastic positioning device of thread rolling workpiece, it comprises hold-down support 22, described hold-down support 22 is mounted on the lower guideway 25, be fixed with down screw plate 20 on the lower guideway 25 of described hold-down support 22 1 sides, described hold-down support 22 can with following screw plate 20 same moved further, the corresponding top of screw plate 20 down is provided with screw plate 21, and described hold-down support 22 is provided with has " V " type locating piece 23 that fine elasticity is made by rubber, described " V " type locating piece 23 forms the locating slot that supports location workpiece 24, and the centre-height H that the setting height(from bottom) of described " V " type locating piece 23 will make workpiece 24 be placed on " V " type locating piece 23 just in time all is consistent with the stationary center 26 of lathe and the height of rolling center 27, when holding out against with assurance workpiece 24, centre bore can not misplace.

When workpiece 24 is carried out the rolling thread rolling, only workpiece 24 need be placed on " V " type locating piece 23, in the time of just can guaranteeing that workpiece 24 holds out against, centre bore can not misplace, workpiece 24 is after holding out against, center motionless (can rotate), following

screw plate

20 and 21 relative motions of last screw plate twist workpiece 24, and " V " type locating piece 23 moves right with following screw plate 20 at this moment, has utilized the elasticity of rubber, " V " type locating piece 23 left support edges are strain under workpiece 24 compressings, can not stop workpiece 24 to pass through, after breaking away from workpiece 24, under elastic reaction, support edge, the left side shape that resiles, the clamping location of preparing second workpiece.

Described elastic positioning device of thread rolling workpiece is not only simple in structure, and it is very ingenious, very practical, it in the practical operation rubber " V " type locating piece 23, good springiness, it is fast to recover shape, and the cost of material is low owing to rubber parts in addition, be shaped by Mould Machining, duplicate easily, and, can often change for preventing that fatigue deformation from influencing positioning accuracy.

Claims

1. elastic positioning device of thread rolling workpiece, it comprises hold-down support, described hold-down support is mounted on the lower guideway of lathe, can with the same moved further of following screw plate, the corresponding top of screw plate down is provided with screw plate, it is characterized in that: described hold-down support is provided with elasticity " V " type locating piece, and it is just in time consistent with pitch of centers before and after the lathe that the setting height(from bottom) of described " V " type locating piece can guarantee that workpiece is placed on " V " type piece centre-height.

2. elastic positioning device of thread rolling workpiece according to claim 1 is characterized in that: described " V " type locating piece is made by the good elastomeric material of elasticity.