CN203843716U

CN203843716U - Workpiece clamp allowing automatic centering

Info

Publication number: CN203843716U
Application number: CN201420136987.5U
Authority: CN
Inventors: 胡士德; 张家春
Original assignee: HANGZHOU RUIGUAN PRECISION MACHINERY Co Ltd
Current assignee: Hangzhou Ruiguan Technology Co Ltd
Priority date: 2014-03-25
Filing date: 2014-03-25
Publication date: 2014-09-24
Anticipated expiration: 2024-03-25

Abstract

The utility model relates to a workpiece clamp, particularly relates to the workpiece clamp allowing automatic centering. The workpiece clamp allowing automatic centering comprises a pair of clamping arms which can be clamped and loosened with the clamping arms opposite to each other under the action of a power device; opposite surfaces of the two clamping arms respectively form into V-shaped clamping surfaces; at least one V-shaped clamping surface is provided with an elastic clamping cushion; racks are respectively fixed at rear ends of the two clamping arms; the two racks are parallel; a gear is engaged between the two racks; at least one clamping arm is provided with the power device which can enable the two clamping arms to be clamped and loosened. The workpiece clamp allowing automatic centering is particularly applicable to clamping and fixation of workpieces with arc surfaces and polygonal workpieces such as rectangular workpieces and can automatically center and clamp the workpieces and meanwhile the elastic clamping cushion which is arranged on the V-shaped clamping surface can prevent workpiece damage.

Description

Can self centering work piece holder

Technical field

The utility model relates to a kind of frock clamp, and relating in particular to one can self centering work piece holder, belongs to Machining Technology field.

Background technology

In all kinds of workpiece process, fixture plays very important effect, and fixture mainly plays clamping and fixing effect to workpiece.For the workpiece of some shape, if outer surface is the polygonal workpiece such as circular arc or rectangle, when it is fixed, also need centering, to reduce the mismachining tolerance in following process process.Existing fixture, the centering problem of less consideration processing work.In addition, existing fixture, all adopts two cylinders directly to promote two briquettings and clamps workpiece to be processed to centre, and the motion of cylinder has certain time delay, cannot stop in time mobile; Its pressure is large, easily damages workpiece to be processed by pressure, especially small workpiece.

Utility model content

The utility model, in order to overcome the deficiencies in the prior art, provides a kind of work piece holder effective, stable, that can feel relieved that clamps.

For this reason, the utility model is by the following technical solutions: one can self centering work piece holder, comprise a pair of jig arm that can relatively clamp under power set effect and unclamp, the relative face of two jig arm forms respectively V-arrangement clamping face, and at least one V-arrangement clamping face is provided with elasticity pad; A tooth bar is fixed respectively in two jig arm rear ends, and two tooth bars are parallel and be engaged with a gear therebetween; At least one jig arm is provided with and can makes two jig arm to the power set that clamp and unclamp.The utility model, by a pair of V-arrangement clamping face of design, is felt relieved and clamps workpiece, can effectively workpiece be located accurately and be clamped, and reduces the mismachining tolerance in following process process, good clamping effect; By be provided with elasticity pad on V-arrangement clamping face, can effectively prevent workpiece damage.

As preferably, on two V-arrangement clamping faces, be provided with an elasticity pad, each elasticity pad comprises two parts of V-shaped arrangement.Instrument is felt relieved under the prerequisite of clamping not affecting workpiece, in available buffer clamping process, the impulsive force of fixture to workpiece, prevents workpiece damage.

As preferably, the length direction of described tooth bar and jig arm vertically arranges, and engage with gear one end of tooth bar, and the other end is connected in jig arm by a connecting rod, and connecting rod can partly stretch in tooth bar under the effect of power set.Can be according to the workpiece processing request of size not, the length of design jig arm, applied widely.

As preferably, at described gear, place is provided with a protective sleeve.Can effectively protect gear structure, increase the service life.

As preferably, described power set are a cylinder, and the cylinder rod of cylinder is connected in jig arm.Draw materials conveniently, dynamical stability, effective.

As preferably, the junction of described cylinder rod and jig arm is arranged with connector.It is effectively protected.

Therefore, the utility model, by a pair of V-arrangement clamping face is set, in holding workpiece, can be felt relieved to workpiece, thereby reduces the mismachining tolerance in following process process; Elasticity pad is set on V-arrangement clamping face, to the clamping better effects if of workpiece, meanwhile, can protects workpiece injury-free; Manner of execution adopts the rack and pinion assembly of air cylinder driven, and having stable behavior, Stroke Control precision are high, draw materials conveniently, and practicality.

Brief description of the drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is front view of the present utility model;

Fig. 3 is B-B face cut-away view in Fig. 2;

Fig. 4 is top view of the present utility model.

Detailed description of the invention

In order to make those skilled in the art person better understand the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.

As Figure 1-4, one can self centering work piece holder, comprise a pair of jig arm 1 that can relatively clamp and unclamp under power set effect, the relative face of two jig arm 1 forms respectively V-arrangement clamping face 11, on two V-arrangement clamping faces 11, be equipped with elasticity pad 12, corresponding with the shape of V-arrangement clamping face 11, each elasticity pad 12 comprises two parts 12a and the 12b of V-shaped arrangement; A tooth bar 2 is fixed respectively in two jig arm 1 rear ends, two tooth bars are parallel and be engaged with a gear 3 therebetween, one jig arm 1 is provided with and can makes two jig arm 1 to the power set 4 that clamp and unclamp, in the present embodiment, power set are cylinder, and cylinder has cylinder block and cylinder rod 41, and cylinder rod 41 is connected in jig arm 1, certainly in other embodiments, power set can also be hydraulic pressure, motor mechanism or man-operated mechanism; Tooth bar 2 vertically arranges with the length direction of jig arm 1, and engage with gear 3 one end of tooth bar 2, and the other end is connected in jig arm 1 by a connecting rod 5, and connecting rod 5 can partly stretch in tooth bar 2 under the effect of cylinder; Be provided with a protective sleeve 6 at gear 3 places; Cylinder rod 41 is arranged with a connection piece 7 with the junction of jig arm 1, can play protection and guide effect.

Described gear 3 has gear shaft, packing ring, bearing and end cap composition, and do axially and radially to fix, in the time moving forward under the effect of a tooth bar at power, gear is rotated, drive again another tooth bar to do mobile translational motion backward, realize self-centering to workpiece and the object of clamping.

Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.

Claims

One kind can self centering work piece holder, comprise a pair of jig arm (1) that can relatively clamp and unclamp under power set effect, it is characterized in that: the relative face of two jig arm (1) forms respectively V-arrangement clamping face (11), at least one V-arrangement clamping face (11) is provided with elasticity pad (12); A tooth bar (2) is fixed respectively in two jig arm (1) rear end, and two tooth bars are parallel and be engaged with a gear (3) therebetween; At least one jig arm (1) is provided with the power set (4) that can make two jig arm (1) relatively clamp and unclamp.
2. according to claim 1 can self centering work piece holder, it is characterized in that: on two V-arrangement clamping faces (11), be provided with an elasticity pad (12), each elasticity pad (12) comprises two parts (12a, 12b) of V-shaped arrangement.
3. according to claim 1 can self centering work piece holder, it is characterized in that: described tooth bar (2) vertically arranges with the length direction of jig arm (1), engage with gear (3) one end of tooth bar (2), it is upper that the other end is connected in jig arm (1) by a connecting rod (5), and connecting rod (5) can partly stretch in tooth bar (2) under the effect of power set.
4. according to claim 1 can self centering work piece holder, it is characterized in that: be provided with a protective sleeve (6) at described gear place.
5. according to claim 1 can self centering work piece holder, it is characterized in that: described power set (4) are a cylinder, the cylinder rod (41) of cylinder is connected in jig arm (1).
6. according to claim 5 can self centering work piece holder, it is characterized in that: described cylinder rod (41) is arranged with connector (7) with the junction of jig arm (1).