CN102744433A

CN102744433A - Fixture

Info

Publication number: CN102744433A
Application number: CN2012102540306A
Authority: CN
Inventors: 蔡玉铨; 王松; 任艳强; 司古义; 罗文博
Original assignee: SHANDONG YUJIE BEARING MANUFACTURE CO Ltd
Current assignee: SHANDONG YUJIE BEARING MANUFACTURE CO Ltd
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2012-10-24
Anticipated expiration: 2032-07-23
Also published as: CN102744433B

Abstract

A fixture comprises a sleeve which is coaxially fixedly connected with a spindle of equipment and is horizontally arranged. A plurality of guide pillars which are horizontally arranged are mounted at the bottom of the inner side of the sleeve, a chuck which is coaxial with the spindle of the equipment is movably sleeved on the guide pillars, a draw bar penetrates through an axis hole of the chuck to be in threaded connection with a lead screw penetrating through an axis hole of the sleeve, a positioning plate which is coaxial with the spindle of the equipment is mounted at the outer ends of the guide pillars extending out of the chuck by bolts, an annular groove is peripherally arranged on a circular outer end surface of the chuck, three fan-shaped notches which are communicated with the annular groove are uniformly peripherally arranged on a side, which is close to the positioning plate, on the circular outer end surface of the chuck, three fixture bodies are clamped in the annular groove via the fan-shaped notches, and are in pressed connection with the chuck by torsional springs which are arranged in the annular groove, and outer conical surfaces of the fixture bodies are connected with a circular conical surface of the inner side of a sleeve opening of the sleeve in a matched manner. The pressure can be automatically adjusted, centers of workpieces can be corrected, machining accuracy of the workpieces is effectively increased, and the quality of products is guaranteed.

Description

A kind of anchor clamps

Technical field:

The present invention relates to a kind of anchor clamps.

Background technology:

At present, when on lathe, processing casting workpiece, mostly adopt the scroll chuck fixation workpiece to process; Because workpiece is a cast body; The ratio of precision of self is relatively poor, much all has quality problems such as self ellipse, triangular deformation, after this workpiece adopts scroll chuck to clamp; Occur the problem of workpiece axle center and rotating shaft core decentraction easily, cause the processed workpiece low precision.When workpiece axle center and rotating shaft core decentraction; If chuck is the tension of folder; Can make the inner stress that produces of processed workpiece, this stress can be released when heat-treatment quenching is handled, thereby makes workpiece produce bigger triangular deformation; If process the workpiece of slim series then easy deformation has more influenced product quality.

Summary of the invention:

The present invention provides a kind of anchor clamps in order to remedy the deficiency of prior art, and it is simple in structure; Easy for installation; Can adjust pressure automatically according to self ellipse, the triangular deformation of workpiece, the check and correction workpiece centre effectively raises the machining accuracy of workpiece; Guarantee the quality of product, solved the problem that exists in the prior art.

The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:

A kind of anchor clamps; Comprise the horizontally disposed sleeve that is connected with the machine spindle concentric; In the sleeve inside bottom some horizontally disposed guide pillars are installed; The threads of lead screw that the axle center hole and that the chuck of movable set one and machine spindle concentric on guide pillar, a pull bar pass chuck passes the sleeve axle center hole is connected, and the positioning disk of bolt installation one and machine spindle concentric is passed through in the guide pillar outer end stretching out chuck outside; Circumference is offered an annular groove in the circular outer ends face upper edge of chuck; On the circular outer ends face of chuck, evenly offer three sector notch that communicate with annular groove near positioning disk one side along circumference, three clamp bodies are in sector notch is installed on annular groove, and one is located at torsion spring in the annular groove compresses clamp body and be connected with chuck; The male cone (strobilus masculinus) of clamp body cooperates with the inboard taper seat of the nozzle of sleeve and joins, and the clamp body outer end outside stretching out sleeve is provided with a fan-shaped rocker piece.

Be provided with a reference column on the outer face of the clamp body outside stretching out sleeve, a rocker piece is sleeved on the reference column and through bolt rocker piece is connected with clamp body.

On rocker piece and workpiece facing surfaces, through bolt two soft pawls are installed, two soft pawls are that axis is symmetrical set with the center line of the scalloped surface of rocker piece, and soft pawl outer end face is provided with sawtooth.

The present invention adopts said structure, and is simple in structure, easy for installation; Through adopting torsion spring to replace bolt that clamp body is fixed, the clamp body male cone (strobilus masculinus) is stressed in during the pressure clamping work pieces, under the elastic reaction of torsion spring, can adjust pressure automatically according to self ellipse, the triangular deformation of workpiece; The check and correction workpiece centre; Make workpiece axle center and rotating shaft core concentric, effectively raise the machining accuracy of workpiece, guaranteed the quality of product.

Description of drawings:

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the right view of clamp body.

Fig. 5 is the right view of chuck.

Among the figure, 1, sleeve, 2, torsion spring, 3, clamp body, 4, rocker piece, 5, positioning disk, 6, chuck, 7, pull bar, 8, soft pawl, 9, annular groove, 10, sector notch, 11, leading screw, 12, guide pillar, 13, reference column.

The specific embodiment:

For clearly demonstrating the technical characterstic of this programme, below through the specific embodiment, and combine its accompanying drawing, the present invention is set forth in detail.

Shown in Fig. 1-5; A kind of anchor clamps; Comprise the horizontally disposed sleeve 1 that is connected with the machine spindle concentric, some horizontally disposed guide pillars 12 are installed, the chuck 6 of movable set one and machine spindle concentric on guide pillar 12 in sleeve 1 inside bottom; The leading screw 11 that the axle center hole and that one pull bar 7 passes chuck 6 passes sleeve 1 axle center hole is threaded; Guide pillar 12 outer ends outside stretching out chuck 6 are through the positioning disk 5 of bolt installation one with the machine spindle concentric, and circumference is offered an annular groove 9 in the circular outer ends face upper edge of chuck 6, on the circular outer ends face of chuck 6, evenly offers three sector notch 10 that communicate with annular groove 9 near positioning disk 5 one sides along circumference; Three clamp bodies 3 are in sector notch 10 is installed on annular groove 9; One is located at torsion springs 2 in the annular groove 9 compresses clamp body 3 and is connected with chuck 6, the male cone (strobilus masculinus) of clamp body 3 cooperates with the nozzle inboard taper seat of sleeve 1 and joins, and clamp body 3 outer ends outside stretching out sleeve 1 are provided with a fan-shaped rocker piece 4.

Be provided with on the outer face of the clamp body 3 outside stretching out sleeve 1 that a reference column 13, one rocker pieces 4 are sleeved on the reference column 13 and rocker piece 4 be connected with clamp body 3 through bolt.On rocker piece 4 and workpiece facing surfaces, through bolt 8, two soft pawls 8 of two soft pawls being installed is that axis is symmetrical set with the center line of the scalloped surface of rocker piece 4, and soft pawl 8 outer end face are provided with sawtooth.Soft pawl 8 outer end face are designed to zigzag, and present line contact is changed in face contact in the past, help the periphery of clamping cast member, have strengthened the fixed effect to workpiece.Rocker piece 4 all adopts bolt to be connected with soft pawl 8, has increased versatility, when the external diameter of processing work is changed, only needs to change corresponding soft pawl 8 or soft pawl 8 and rocker piece 4, can satisfy the workpiece demand, greatly facilitates operation, has practiced thrift the time.

During work, through leading screw 11 pulling pull bars 7, drive chuck 6, clamp body 3 move, and under the effect of the inboard taper seat of sleeve 1 nozzle, make the inside stressed extruding workpiece of male cone (strobilus masculinus) of clamp body 3, thereby workpiece is clamped.Because clamp body 3 is fixing with chuck 6 through torsion spring 2; Being different from prior screws fixes; When clamping, can adjust pressure automatically according to self ellipse, the triangular deformation of workpiece, the check and correction workpiece centre makes workpiece axle center and rotating shaft core concentric; Effectively raise the machining accuracy of workpiece, guaranteed the quality of product.

The present invention does not detail part, is those skilled in the art of the present technique's known technology.

Claims

1. anchor clamps; Comprise the horizontally disposed sleeve that is connected with the machine spindle concentric; It is characterized in that: some horizontally disposed guide pillars are installed in the sleeve inside bottom; The threads of lead screw that the axle center hole and that the chuck of movable set one and machine spindle concentric on guide pillar, a pull bar pass chuck passes the sleeve axle center hole is connected, and the positioning disk of bolt installation one and machine spindle concentric is passed through in the guide pillar outer end stretching out chuck outside; Circumference is offered an annular groove in the circular outer ends face upper edge of chuck; On the circular outer ends face of chuck, evenly offer three sector notch that communicate with annular groove near positioning disk one side along circumference, three clamp bodies are in sector notch is installed on annular groove, and one is located at torsion spring in the annular groove compresses clamp body and be connected with chuck; The male cone (strobilus masculinus) of clamp body cooperates with the inboard taper seat of the nozzle of sleeve and joins, and the clamp body outer end outside stretching out sleeve is provided with a fan-shaped rocker piece.

2. a kind of anchor clamps according to claim 1 is characterized in that: be provided with a reference column on the outer face of the clamp body outside stretching out sleeve, a rocker piece is sleeved on the reference column and through bolt rocker piece is connected with clamp body.

3. a kind of anchor clamps according to claim 1 and 2; It is characterized in that: on rocker piece and workpiece facing surfaces, two soft pawls are installed through bolt; Two soft pawls are that axis is symmetrical set with the center line of the scalloped surface of rocker piece, and soft pawl outer end face is provided with sawtooth.