CN102728765B - Annular part fixture - Google Patents
Annular part fixture Download PDFInfo
- Publication number
- CN102728765B CN102728765B CN201210236104.3A CN201210236104A CN102728765B CN 102728765 B CN102728765 B CN 102728765B CN 201210236104 A CN201210236104 A CN 201210236104A CN 102728765 B CN102728765 B CN 102728765B
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- China
- Prior art keywords
- claw
- hydraulic
- jaw
- seat
- steel wire
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Abstract
The invention relates to an annular part fixture, which comprises a three-jaw wedge power chuck seat and a plurality of base jaws arranged on the three-jaw wedge power chuck seat. The annular part fixture is characterized in that the base jaws are fixedly connected with a clamping jaw hydraulic seat, a plurality of clamping jaw base holes are evenly arranged on the clamping jaw hydraulic seat with the circle center of the three-jaw wedge power chuck seat serving as the axle center, clamping jaw pistons and clamping jaws are successively arranged in the clamping jaw base holes, and the clamping jaw pistons push the clamping jaw to perform radial motion along the circle center of the three-jaw wedge power chuck seat under the action of internal hydraulic oil of the clamping jaw base holes. The annular part fixture can clamp irregularly-shaped annular forge piece blanks evenly and has the advantages that clamping force is more balanced, residual stress is remarkably reduced, required clamping force is smaller and clamping rigidity is larger, and clamping is firm.
Description
Technical field
The present invention relates to a kind of fixture of fixing workpiece, relate in particular to a kind of fixture for ring-shaped work pieces.
Background technology
Annular thin-wall parts very easily deforms in clamping and process, wayward machining accuracy and raising working (machining) efficiency.Machining deformation and working (machining) efficiency become the bottleneck problem of annular thin-wall parts processing.In annular thin-wall parts process, fixture is a thin-walled link, replaces although old-fashioned soft pawl and spring perch have been compared advanced floating clamp, and floating clamp clamping force is more balanced comparatively speaking.Now widely used have circular arc type floating clamp and an axle formula floating clamp, but some problems are in use also found, circular arc type floating clamp holding workpiece is firm but floatability is poor, axle formula floating clamp floatability is good but claw intensity is not high, easily fracture, and the fastness of holding workpiece is poor, workpiece is easier to come off.
Summary of the invention
The invention provides a kind of ring-shaped work pieces fixture, frame for movement and hydraulic structure are combined, take into account the advantage of machinery and hydraulic structure, in process, can balancedly clamp ring-shaped work pieces blank in irregular shape, to compare clamping force more balanced with soft pawl and floating clamp, significantly reduced residual stress, practice shows that this is to reducing nip stress, and the strain reducing in quenching distortion and use is highly profitable.Compare with axle formula floating clamp with now widely used circular arc type floating clamp, needed clamping force less and clamping rigidity larger, clamping is firm.
For achieving the above object, ring-shaped work pieces fixture provided by the invention, comprise three-jaw wedge type power chuck seat 1 and some base pawls 2 being positioned on described three-jaw wedge type power chuck seat 1, on described base pawl 2, be fixedly connected with claw hydraulic seat 3, on described claw hydraulic seat 3, be evenly arranged some claw datum hole 3-1 as axle center taking three-jaw wedge type power chuck seat 1 center of circle, in described claw datum hole 3-1, be provided with successively claw piston 5 and claw 7, under the effect of described claw piston 5 hydraulic oil in claw datum hole 3-1, promote claw 7 and do radial motion along the center of circle of three-jaw wedge type power chuck seat 1.
Further, described claw 7 front ends are provided with radially claw spring steel wire hole 7-1, have master jaw spring steel wire hole 3-2 on described claw hydraulic seat 3; Insert in described claw spring steel wire hole 7-1 spring steel wire 8 one end, and the other end inserts in described master jaw spring steel wire hole 3-2; Described spring steel wire 8 is positioned at the axis hole of spring steel wire fixed screw 9; Described spring steel wire fixed screw 9 is threaded with described claw hydraulic seat 3.
Further, described claw hydraulic seat 3 is provided with hydraulic pressure oil duct 3-4 and arc seal receptacle 4, and described hydraulic pressure oil duct 3-4 is communicated with respectively each claw datum hole 3-1.
Further, described arc seal receptacle 4 is provided with pouring orifice plug 4-1 and hydraulic hose connector 4-2, and described hydraulic hose connector 4-2 is connected with hydraulic hose 10.
Further, described three-jaw wedge type power chuck seat 1 center is fixed with end face locating ring 12, described end face locating ring 12 external diameters are slightly smaller than annular workpieces 13, and described end face locating ring 12 internal diameters are a bit larger tham annular workpieces 13, and described end face locating ring 12 is concentric with described three-jaw wedge type power chuck seat 1.
Further, described claw piston 5 is provided with piston seal 6.
The present invention compared with prior art has the following advantages: frame for movement and hydraulic structure are combined, take into account the advantage of machinery and hydraulic structure, can balancedly clamp annular forging piece blank in irregular shape, clamping force is more balanced, residual stress significantly declines, needed clamping force less and clamping rigidity larger, clamping is firm.
Brief description of the drawings
Fig. 1 is ring-shaped work pieces fixture overall appearance figure.
Fig. 2 is ring-shaped work pieces clamp member structure connection layout.
Fig. 3 is the claw hydraulic seat parts decomposing schematic representation of ring-shaped work pieces fixture.
Fig. 4 is A-A directional profile figure in Fig. 3.
Fig. 5 is the hydraulic pressure oil duct schematic diagram of ring-shaped work pieces fixture.
Wherein: 1 three-jaw wedge type power chuck seat, 2 base pawls, 3 claw hydraulic seats, 3-1 claw datum hole, 3-2 master jaw spring steel wire hole, 3-4 hydraulic pressure oil duct, 4 arc seal receptacles, 4-1 pouring orifice plug, 4-2 hydraulic hose connector, 5 claw pistons, 6 piston packings, 7 claws, 7-1 claw spring steel wire hole, 8 spring steel wires, 9 spring steel wire fixed screws, 10 hydraulic hoses, 11 hydraulic oil, 12 end face locating rings, 13 annular workpieces, 14 hydraulic oil.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, the present invention is further detailed explanation by reference to the accompanying drawings.
As Fig. 1, the ring-shaped work pieces fixture of the present invention shown in Fig. 2, comprises three-jaw wedge type power chuck seat 1, base pawl 2, claw hydraulic seat 3, arc seal receptacle 4, claw 7, hydraulic hose 10, end face locating ring 12, annular workpieces 13.On claw hydraulic seat 3 taking three-jaw wedge type power chuck seat 1 center of circle as axle center radial several claw datum holes 3-1 that is uniformly distributed, before and after this claw datum hole 3-1, run through claw hydraulic seat 3, claw datum hole 3-1 and claw piston 5 entirety are slidably matched, claw piston 5 front ends contact with claw 7, claw piston 5 rear ends contact with hydraulic oil 14, promote claw 7 and do radial motion along the center of circle of three-jaw wedge type power chuck seat 1 under the effect of claw piston 5 hydraulic oil in claw datum hole 3-1; Claw 7 is slidably matched with claw datum hole 3-1 entirety, and claw 7 front end faces contact with annular workpieces 13 cylindricals, and claw 7 rear end faces contact with claw piston 5 front end faces, and claw 7 front ends had the radially claw spring steel wire hole 7-1 of claw 7 axis; On claw hydraulic seat 3, there is master jaw spring steel wire hole 3-2; Insert in master jaw spring steel wire hole 3-2 spring steel wire 8 upper ends, insert in claw spring steel wire hole 7-1 lower end, spring steel wire 8 upper ends are positioned at the axis hole of spring steel wire fixed screw 9, spring steel wire fixed screw 9 by with claw hydraulic seat 3 the moving axially of restraining spring steel wire 8 that be threaded.
The claw hydraulic seat parts decomposing schematic representation of ring-shaped work pieces fixture as shown in Figure 3, Figure 4, arc seal receptacle 4 is positioned at the outside of claw hydraulic seat 3, on arc seal receptacle 4, have pouring orifice plug 4-1 and hydraulic hose connector 4-2, hydraulic hose connector 4-2 is communicated with respectively each hydraulic hose 10.
The hydraulic pressure oil duct schematic diagram of ring-shaped work pieces fixture as shown in Figure 5, claw hydraulic seat 3 is provided with hydraulic pressure oil duct 3-4 and arc seal receptacle 4, hydraulic pressure oil duct 3-4 is communicated with respectively each claw datum hole 3-1, this claw piston 5, claw datum hole 3-1, hydraulic pressure oil duct 3-4 and arc seal receptacle 4 form a sealed hydraulic oil pocket being interconnected, and are full of hydraulic oil 14 in sealed hydraulic oil pocket, and each point pressure equates.Arc seal receptacle 4 is provided with pouring orifice plug 4-1 and hydraulic hose connector 4-2, and hydraulic hose connector 4-2 is connected with hydraulic hose 10.End face locating ring 12 is fixed on three-jaw wedge type power chuck seat 1, and its external diameter is slightly smaller than annular workpieces 13, and internal diameter is a bit larger tham annular workpieces 13 concentric with pawl wedge type power chuck seat 1.
2 have three, and claw hydraulic seat 3 is separately fixed on three base pawls 2, can on three-jaw wedge type power chuck seat 1, make synchronous centripetal or centrifugal motion (as Fig. 2).When unclamped state because spring steel wire 8 lower ends are inserted claw spring steel wire hole 7-1 and are slidably matched, can flexibly claw 7 be remained on to an ad-hoc location and limit it and move axially, now starting the hydraulic means being connected with three-jaw wedge type power chuck seat 1 makes base pawl 2 make centrifugal motion to an ad-hoc location, this ad-hoc location can ensure that claw 7 front end faces and annular workpieces 13 cylindricals have certain distance, now by roughly concentric of the end face laminating of end face of annular workpieces 13 and end face locating ring 12 maintenance and end face locating ring 12; Then starting the hydraulic means connected with three-jaw wedge type power chuck seat 1 makes base pawl 2 do centripetal motion until claw 7 front end faces contact and keep the pressure of setting with annular workpieces 13 cylindricals, now claw 7 rear end faces contact with claw piston 5 front end faces respectively, the axial location of diverse location claw 7 can change along with the difference of annular workpieces 13 outer round surface shapes, claw 7 will overcome the elastic force that spring steel wire 8 distortion produce in this course, because elastic force compared with clamping force is very little negligible.Because the hydraulic oil of hydraulic fluid chamber 14 everywhere pressure equates, can't help the diameter of claw piston 5, claw 7 of position also equates, therefore the clamping force that the claw 7 of diverse location provides equates, this has just ensured that on annular workpieces 13 cylindricals, clamping force is in admirable proportion, the excessive strain that can not cause because of annular workpieces 13 local shape differences, has fundamentally solved the unbalanced problem of the irregular clamping force causing of annular workpieces blank shape.
In such scheme, can determine the total quantity of claw 7 according to the size of annular workpieces 13, but should accomplish that claw 7 is along the circumferential direction uniformly distributed, and the total quantity of claw 7 should be as far as possible mainly with ensureing clamping force equilibrium.
Claims (5)
1. a ring-shaped work pieces fixture, comprise three-jaw wedge type power chuck seat (1) and some base pawls (2) being positioned on described three-jaw wedge type power chuck seat (1), it is characterized in that, on described base pawl (2), be fixedly connected with claw hydraulic seat (3), described claw hydraulic seat (3) is upper is evenly arranged some claw datum holes (3-1) taking three-jaw wedge type power chuck seat (1) center of circle as axle center, in described claw datum hole (3-1), be provided with successively claw piston (5) and claw (7), under the effect of described claw piston (5) hydraulic oil in claw datum hole (3-1), promote claw (7) and do radial motion along the center of circle of three-jaw wedge type power chuck seat (1), described claw (7) front end is provided with radially claw spring steel wire hole (7-1), has master jaw spring steel wire hole (3-2) on described claw hydraulic seat (3), insert in described claw spring steel wire hole (7-1) spring steel wire (8) one end, and the other end inserts in described master jaw spring steel wire hole (3-2), described spring steel wire (8) is positioned at the axis hole of spring steel wire fixed screw (9), described spring steel wire fixed screw (9) is threaded with described claw hydraulic seat (3).
2. ring-shaped work pieces fixture as claimed in claim 1, is characterized in that, described claw hydraulic seat (3) is provided with hydraulic pressure oil duct (3-4) and arc seal receptacle (4), and described hydraulic pressure oil duct (3-4) is communicated with respectively each claw datum hole (3-1).
3. ring-shaped work pieces fixture according to claim 2, is characterized in that, described arc seal receptacle (4) is provided with pouring orifice plug (4-1) and hydraulic hose connector (4-2), and described hydraulic hose connector (4-2) is connected with hydraulic hose (10).
4. ring-shaped work pieces fixture as claimed in claim 1, is characterized in that, described three-jaw wedge type power chuck seat (1) center is fixed with end face locating ring (12), and described end face locating ring (12) is concentric with described three-jaw wedge type power chuck seat (1).
5. ring-shaped work pieces fixture as claimed in claim 1, is characterized in that, described claw piston (5) is provided with piston seal (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210236104.3A CN102728765B (en) | 2012-07-09 | 2012-07-09 | Annular part fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210236104.3A CN102728765B (en) | 2012-07-09 | 2012-07-09 | Annular part fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102728765A CN102728765A (en) | 2012-10-17 |
| CN102728765B true CN102728765B (en) | 2014-09-17 |
Family
ID=46985459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210236104.3A Expired - Fee Related CN102728765B (en) | 2012-07-09 | 2012-07-09 | Annular part fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102728765B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058714B (en) * | 2016-12-25 | 2018-08-17 | 重庆市骞焰机械有限责任公司 | Shaft member fixture of heat treatment |
| CN108705113A (en) * | 2018-06-22 | 2018-10-26 | 苏州磐岩精密机械有限公司 | Multiple spot equalization clamping device |
| CN109365540A (en) * | 2018-11-21 | 2019-02-22 | 泰尔重工股份有限公司 | A kind of axle sleeve locking apparatus by hydraulic control |
| CN109827853B (en) * | 2019-04-03 | 2020-12-04 | 河南交通职业技术学院 | Compression-shear testing machine and quick locking device thereof |
| CN110722472B (en) * | 2019-08-26 | 2021-08-06 | 武汉船用机械有限责任公司 | Annular part supporting device |
| CN111590359B (en) * | 2020-05-07 | 2021-07-20 | 安徽工程大学 | Multifunctional intelligent clamp |
| CN112828056A (en) * | 2020-12-25 | 2021-05-25 | 宁波凯明机器制造有限公司 | Dephosphorization system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4042364A1 (en) * | 1990-05-07 | 1991-11-14 | Xaver Kerling | Chuck securing irregular work - has hydraulic rams supplied by common pressurised reservoir and shut off individually |
| GB2330546A (en) * | 1997-10-24 | 1999-04-28 | Bernard Joseph Maughan | Adjustable trepanning cutting tool |
| CN1280897A (en) * | 1999-07-14 | 2001-01-24 | 厄罗瓦公司 | Device for clamping workpiece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7654178B2 (en) * | 2007-01-02 | 2010-02-02 | Hall David R | Hydraulic chuck with independently moveable jaws |
-
2012
- 2012-07-09 CN CN201210236104.3A patent/CN102728765B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4042364A1 (en) * | 1990-05-07 | 1991-11-14 | Xaver Kerling | Chuck securing irregular work - has hydraulic rams supplied by common pressurised reservoir and shut off individually |
| GB2330546A (en) * | 1997-10-24 | 1999-04-28 | Bernard Joseph Maughan | Adjustable trepanning cutting tool |
| CN1280897A (en) * | 1999-07-14 | 2001-01-24 | 厄罗瓦公司 | Device for clamping workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102728765A (en) | 2012-10-17 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140917 Termination date: 20180709 |