CN201815985U

CN201815985U - Automatic clamp for workpieces

Info

Publication number: CN201815985U
Application number: CN2010202925409U
Authority: CN
Inventors: 吴兴华; 吴奔
Original assignee: ZHEJIANG YUEQING HUADONG METER FACTORY
Current assignee: ZHEJIANG YUEQING HUADONG METER FACTORY
Priority date: 2010-08-10
Filing date: 2010-08-10
Publication date: 2011-05-04
Anticipated expiration: 2020-08-10

Abstract

The utility model discloses an automatic clamp for workpieces. A casing is connected with a conduit by a conical surface; uniformly-distributed small holes are arranged on the intermediate section of the conduit; steel balls are arranged in the small holes; a spring is sleeved outside the conduit; an end cover nut and an end cover are respectively arranged at two ends of the conduit; the end cover nut is supported against the spring; and when the conduit is compressed by the spring to be connected with the conical surface of the casing, the steel balls are stressed to downward press, the workpieces (wire rods) arranged in the conduit can be pressed. When the whole clamp drives the workpieces (wire rods) to move forward, the applied pulling force is larger and the clamping force is larger, so that the workpieces can be reliably clamped. When the workpieces (wire rods) withdraw, the steel balls are free from contacting with the workpieces (wire rods) by only retracting the conduit. Therefore, the automatic clamp can clamp reliably and retract thoroughly and ensure that the wire rods can be automatically clamped and loosened without an auxiliary mechanism.

Description

A kind of automatic workpiece fixture

Technical field

The utility model relates to the automatic workpiece fixture that uses in a kind of automatic wire processing.

Background technology

Wire rod is a kind of common processing object, a complexity that reason is a clamping tool of restraining wire process automation, common clamping device all needs to clamp wire rod by external active force, and its clamping and the control of unclamping also need realize by corresponding mechanism, and all there is in various degree damage on the armouring surface.

Chinese patent once disclosed a kind of " wire clamp " (China, publication number CN201170764, open day on December 24th, 2008), and it comprises a fixed block, a coiling fixator and a fixture.Run through offering an adjustment hole along direction extension on the described fixed block, described fixture passes adjustment hole and is fixed on coiling fixator and the fixed block.Wire clamp is when the wire stretching test of carrying out different size, adjust fixture in adjustment hole the relevant position and drive that the coiling fixator is corresponding to be moved, make the wire rod of coiling on the fixator along with moving, and then make center of effort's line of wire rod can overlap with the center line of material stretch test machine to the wire rod application of force, so wire clamp is applicable to the wire stretching test of different-diameter.But it can not be applicable to automatic wire processing.

Chinese patent once disclosed a kind of " novel wire clamp " (China, publication number CN201293775, open day on August 19th, 2009), it comprises chuck, connecting rod and handle, handle used connecting rod to be connected with chuck, the both ends of the surface center of chuck is provided with circular trough, is communicated with by a through hole between two circular troughs.This clamp structure is reasonable in design, with the fixing wire rod sample of these anchor clamps, has effectively reduced Check-Out Time, has improved the efficient that detects and the accuracy of testing result.But it can not be applicable to automatic wire processing.

Summary of the invention

The purpose of this utility model is to provide a kind of automatic workpiece fixture, and it makes the clamping of wire rod and unclamps all and can finish automatically, need not by auxiliary body.

For achieving the above object, the solution that the utility model is taked is: a kind of automatic workpiece fixture, sleeve and conduit are by a cone match, the conduit stage casing has equally distributed aperture, the steel ball of packing in the aperture, catheter jacket spring, the conduit two ends are device end box nut and end cap respectively, the end cap nut withstands spring, and when conduit was joined with the sleeve conical surface by the spring compressing, steel ball is stressed to press down.

Steel ball is stressed when pressing down, and pushes down the workpiece (wire rod) that is contained in the conduit.Whole anchor clamps drive workpiece (wire rod) when advancing, and institute's pulling force of executing is big more, and then chucking power is also big more, can guarantee to hold reliable.Workpiece (wire rod) only needs conduit is retreated when withdrawing from, and steel ball and workpiece (wire rod) just disengage.Realized reliable clamping like this, withdrawed from thoroughly.It makes the clamping of wire rod and unclamps all and can finish automatically, need not by auxiliary body.

Description of drawings

Fig. 1 is the structural representation of present embodiment.

Fig. 2 is that present embodiment is organized continuous feed structural scheme of mechanism of series connection use composition more.

Among the figure: 1. end cap nut, 2. spring, 3. sleeve, 4. steel ball, 5. conduit, 6. end cap, 7. workpiece.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described again.

Referring to Fig. 1, a kind of automatic workpiece fixture, sleeve 3 and conduit 5 are by a cone match, conduit 5 stage casings have equally distributed aperture, the steel ball 4 of packing in the aperture, conduit 5 outer casing springs 2, conduit 5 two ends are device end box nut 1 and end cap 6 respectively, end cap nut 1 withstands spring 2, when conduit 5 is joined with sleeve 3 conical surfaces by spring 2 compressings, and steel ball 4 stressed pressing down.

Referring to Fig. 1, during steel ball 4 stressed pressing down, push down the workpiece 7 (wire rod) that is contained in the conduit 5.Whole anchor clamps drive workpiece 7 (wire rod) when advancing, and institute's pulling force of executing is big more, and then chucking power is also big more, can guarantee to hold reliable.Workpiece 7 (wire rod) only needs conduit 5 is retreated when withdrawing from, and steel ball 4 just disengages with workpiece 7 (wire rod).Realized reliable clamping like this, withdrawed from thoroughly.It makes the clamping of workpiece 7 (wire rod) and unclamps all and can finish automatically, need not by auxiliary body.

This automatic workpiece fixture comes down to a kind of from clamping device, and a kind of universal architecture that can be used as similar applications is promoted the use of, and the conical surface can be improved to the inclined-plane, and steel ball 4 can be replaced as slide block, is applicable to the clamping of workpiece such as billot, bar.

Referring to Fig. 2, this automatic workpiece fixture can be organized series connection more and use, and forms a continuous feed mechanism.

Claims

1. automatic workpiece fixture, it is characterized in that: sleeve (3) and conduit (5) are by a cone match, conduit (5) stage casing has equally distributed aperture, the steel ball (4) of packing in the aperture, conduit (5) outer casing spring (2), conduit (5) two ends are device end box nut (1) and end cap (6) respectively, and end cap nut (1) withstands spring (20, conduit (5) is subjected to spring (2) compressing and sleeve (3) when the conical surface joins, stressed the pressing down of steel ball (4).

2. a kind of automatic workpiece fixture according to claim 1 is characterized in that: the described conical surface is improved to the inclined-plane, and described steel ball (4) is replaced as slide block.

3. a kind of automatic workpiece fixture according to claim 1 is characterized in that: the many groups of this automatic workpiece fixture are composed in series a continuous feed mechanism.