CN206854684U - A kind of three-jaw clamping device - Google Patents

A kind of three-jaw clamping device Download PDF

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Publication number
CN206854684U
CN206854684U CN201720608579.9U CN201720608579U CN206854684U CN 206854684 U CN206854684 U CN 206854684U CN 201720608579 U CN201720608579 U CN 201720608579U CN 206854684 U CN206854684 U CN 206854684U
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CN
China
Prior art keywords
pawl
female
steel ball
jaw clamping
clamping
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Active
Application number
CN201720608579.9U
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Chinese (zh)
Inventor
左立志
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SUZHOU QINBAO PRECISE MACHINERY CO Ltd
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SUZHOU QINBAO PRECISE MACHINERY CO Ltd
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Priority to CN201720608579.9U priority Critical patent/CN206854684U/en
Application granted granted Critical
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Abstract

The utility model discloses a kind of three-jaw clamping device, including an oild chuck, same multiple female pawls provided circumferentially about on oild chuck, a secondary pawl is accordingly each flexibly connected by the bearing pin of an axial direction on female pawl, each secondary pawl can rotate around corresponding bearing pin;The both ends of each secondary pawl respectively set the screwed hole of a radial direction, and the threaded rod of trend steel ball is threaded on secondary pawl by screwed hole, and the end of one end of the internal workpiece to be held of trend steel ball direction is band tooth steel ball.Band tooth trend steel ball is used on the utility model pair pawl improves axially position stability, bite can Universal rotary clamping is bonded completely, ensure that the quality stability and potential safety hazard of converted products, reduce input cost, the deficiency of existing clamping device is improved, use range is wide, easy to adjust, it is simple in construction, low manufacture cost, stay in grade are high in machining efficiency, security and stability is high, is particularly suitable for the processing to turning round class disk class, ring class Flexible Deforming Parts.

Description

A kind of three-jaw clamping device
Technical field
A kind of clamping device is the utility model is related to, belongs to field of mechanical technique.
Background technology
At present there is problem on deformation in mechanical processing industry after being processed for turnery processing disk, annulus class thin wall iron part, The depth of parallelism of workpiece, circularity fluctuation are larger, cause quality unstable, most of to clamp turning processing scheme using hydraulic pressure three-jaw, Scheme 1 splits process:More sequence turning are become by original two sequences turning, with the principle of first thick rear essence, ensure problem on deformation, even Increase grinding machine is processed to ensure the depth of parallelism.Scheme 2 prevents the stress deformation problem of workpiece using floating clamping mechanism, there is three Point, 6 points, ten two points to Multi-point floating clamping device etc., the former used device is relatively more, and cost is high.The latter is pressed from both sides using floating Hold, because of spray error itself, eliminate the hanging problem of bite, make workpiece circumference uniform force, improve the circle of workpiece Error is spent, but because the chucking power of clamping jaw is unsuitable excessive, is floated because clamping jaw body design exists upwards in workpiece spindle, in axial control The uneven potential safety hazard for causing vibration of workpiece and flying material of upper cutting force.
Utility model content
Technical problem to be solved in the utility model is the defects of overcoming prior art, there is provided a kind of three-jaw clamping dress Put, consolidate the clamping of workpiece surrounding fitting, uniform force, chucking power completely.
In order to solve the above technical problems, the utility model provides a kind of three-jaw clamping device, it is characterized in that, including a hydraulic pressure Chuck, same multiple female pawls provided circumferentially about on oild chuck, accordingly lived by the bearing pin of an axial direction on each female pawl One secondary pawl of dynamic connection, each secondary pawl can rotate around corresponding bearing pin;
The both ends of each secondary pawl respectively set the screwed hole of a radial direction, and the threaded rod of trend steel ball is threadedly coupled by screwed hole On secondary pawl, the end of one end of the internal workpiece to be held of trend steel ball direction is band tooth steel ball.
The secondary pawl is connected to the upper surface of female pawl.
The axostylus axostyle of the bearing pin is with female hollow stem.
Axial counter sink is provided with female pawl, clamping screw passes through the counter sink from the lower surface of female pawl It is connected with the female hollow rod locking of band of the bearing pin through female pawl upper surface side pair pawl.
It is provided with the secondary pawl and accommodates the pin-and-hole that the bearing pin rotates wherein.
The pin-and-hole axial depth is more than 40mm.
The threaded rod of trend steel ball is locked towards the other end on the outside of secondary pawl by locking nut.
The workpiece support point for setting pair of workpieces to be positioned and/or supported on each female pawl.
The rotation that the secondary pawl is provided with to secondary pawl carries out spacing stopper slot.
Female pawl, secondary pawl are accordingly disposed as three.
The beneficial effect that the utility model is reached:
The utility model is to devise a kind of point floating formula clamping jaw of three-jaw six, uses band tooth trend steel ball to improve axle on secondary pawl To position stability, bite can Universal rotary clamping is bonded completely.It ensure that the quality stability and safety of converted products Hidden danger, input cost is reduced, improve the deficiency of existing clamping device, use range is wide, easy to adjust, simple in construction, system It is low to make cost, stay in grade is high in machining efficiency, and security and stability is high, is particularly suitable for revolution class disk class, ring class yielding zero The processing of part, it can be designed according to Workpiece structure and be adapted to quantity bite.
Brief description of the drawings
Fig. 1 is three-jaw clamping device schematic diagram;
Fig. 2 is one group of mother's pawl and secondary pawl connection diagram in Fig. 1;
Fig. 3 is Fig. 2 top view;
Fig. 4 is Fig. 3 A-A sectional views;
In figure, 1, female pawl;11st, counter sink;2nd, secondary pawl;21st, screwed hole;22nd, stopper slot;3rd, bearing pin;4th, trend steel ball;5、 Locking nut;6th, trend steel ball;7th, locking nut;8th, workpiece support point;9th, clamping screw;10th, oild chuck.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this The technical scheme of utility model, and the scope of protection of the utility model can not be limited with this.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, three-jaw clamping device of the present utility model, including an oild chuck 10, three Female pawl 1 is arranged on the same circumference on oild chuck 10, and is uniformly distributed.Three secondary pawls 2 are accordingly lived by bearing pin 3 respectively Dynamic to be connected to three female upper surfaces of pawl 1, each secondary pawl 2 can rotate centered on the bearing pin 3 of its connection.By three female Hes of pawl 1 Piece-holder is limited to the interior volume that three female pawls 1 and three secondary pawls 2 surround by three secondary pawls 2.
Oild chuck 10 is using the chuck that can be hydraulically operated clamping workpiece in the prior art.
Secondary pawl 2 is provided with stopper slot 22, and the rotation to secondary pawl 2 carries out spacing.
The axostylus axostyle of bearing pin 3 is the female bar of hollow arbor braid, and clamping screw 9 passes through counter sink 11 and bearing pin 3 on female pawl 1 The connection of band female rod locking, female pawl 1, secondary pawl 2 is connected and is not departed from.It is used for the pin-and-hole for accommodating bearing pin 3 on secondary pawl 2 Axial depth is more than 40MM and slide fit, to reduce the axially inclined floating error of secondary pawl.
The both ends of each secondary pawl 2 respectively set the screwed hole 21 of a radial direction, and trend steel ball 4 and trend steel ball 6 pass through screwed hole 21 screw-ins are connected on secondary pawl 2, and the end of one end of the internal workpiece to be held of the direction of trend steel ball 4,6 is band tooth steel ball, as According to the radial and axial rotation of workpiece the clamping of workpiece surrounding fitting, uniform force, chucking power completely can be made steady with tooth bite Gu.Hanging and potential safety hazard is axially especially being improved in clamping, and adjustability is strong.Locking nut 5,7 corresponds to be locked at respectively Trend steel ball 4,6 realizes firm effect on the screw rod of the other end in the secondary outside of pawl 2.
A workpiece support point 8 is set on each female pawl 1, for being positioned, being supported to workpiece.
Embodiment:Workpiece is put on the strong point 8 on three female pawls 1, then carries out hydraulic clamping, adjusts each secondary pawl 2,6 points of band tooth steel ball end faces that the trend steel ball 6 on secondary pawl is formed is clamped fitting workpiece completely, hydraulic clamp locking, realize Processing operation to workpiece, it is therefore prevented that problem of workpiece deformation, clamping effect are good.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change Enter and deform and also should be regarded as the scope of protection of the utility model.

Claims (10)

1. a kind of three-jaw clamping device, it is characterized in that, an including oild chuck is same provided circumferentially about multiple on oild chuck Female pawl, a secondary pawl is accordingly each flexibly connected by the bearing pin of an axial direction on female pawl, each secondary pawl can be around corresponding pin Axle rotates;
The both ends of each secondary pawl respectively set the screwed hole of a radial direction, and the threaded rod of trend steel ball is threaded in pair by screwed hole On pawl, the end of one end of the internal workpiece to be held of trend steel ball direction is band tooth steel ball.
2. a kind of three-jaw clamping device according to claim 1, it is characterized in that, the secondary pawl is connected to the upper of female pawl Surface.
3. a kind of three-jaw clamping device according to claim 1 or 2, it is characterized in that, the axostylus axostyle of the bearing pin is with interior The hollow stem of screw thread.
4. a kind of three-jaw clamping device according to claim 3, it is characterized in that, it is provided with axial countersunk head on female pawl Hole, the pin of the clamping screw from the lower surface of female pawl through the counter sink and through female pawl upper surface side pair pawl The female hollow rod locking connection of band of axle.
5. a kind of three-jaw clamping device according to claim 1, it is characterized in that, it is provided with the secondary pawl and accommodates the pin The pin-and-hole that axle rotates wherein.
6. a kind of three-jaw clamping device according to claim 5, it is characterized in that, the pin-and-hole axial depth is more than 40mm.
7. a kind of three-jaw clamping device according to claim 1, it is characterized in that, the threaded rod of trend steel ball is towards outside secondary pawl The other end of side is locked by locking nut.
8. a kind of three-jaw clamping device according to claim 1, it is characterized in that, set pair of workpieces to carry out on each female pawl Positioning and/or the workpiece support point of support.
9. a kind of three-jaw clamping device according to claim 1, it is characterized in that, the secondary pawl is provided with the rotation to secondary pawl Carry out spacing stopper slot.
10. a kind of three-jaw clamping device according to claim 1, it is characterized in that, female pawl, secondary pawl are accordingly respectively provided with For three.
CN201720608579.9U 2017-05-27 2017-05-27 A kind of three-jaw clamping device Active CN206854684U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720608579.9U CN206854684U (en) 2017-05-27 2017-05-27 A kind of three-jaw clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720608579.9U CN206854684U (en) 2017-05-27 2017-05-27 A kind of three-jaw clamping device

Publications (1)

Publication Number Publication Date
CN206854684U true CN206854684U (en) 2018-01-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720608579.9U Active CN206854684U (en) 2017-05-27 2017-05-27 A kind of three-jaw clamping device

Country Status (1)

Country Link
CN (1) CN206854684U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111922653A (en) * 2020-07-22 2020-11-13 东风商用车有限公司 Fine inserting and rolling machining process for inner gear ring of heavy-duty automobile gearbox after cold extrusion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111922653A (en) * 2020-07-22 2020-11-13 东风商用车有限公司 Fine inserting and rolling machining process for inner gear ring of heavy-duty automobile gearbox after cold extrusion

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