CN104057322B - A kind of mesochite divides middle special fixture - Google Patents
A kind of mesochite divides middle special fixture Download PDFInfo
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- CN104057322B CN104057322B CN201410288382.2A CN201410288382A CN104057322B CN 104057322 B CN104057322 B CN 104057322B CN 201410288382 A CN201410288382 A CN 201410288382A CN 104057322 B CN104057322 B CN 104057322B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Mechanical Engineering (AREA)
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Abstract
The present invention proposes a kind of mesochite and divide middle special fixture, its technical essential is: on clamp bottom board with center reference point for foundation, be provided with longitudinal umbrella shape Chi Fenzhong mechanism and 2 horizontal umbrella shape Chi Fenzhong mechanisms, 2 horizontal umbrella shape Chi Fenzhong mechanisms are symmetrical, and 2 horizontal umbrella shape Chi Fenzhong mechanisms are positioned on longitudinal umbrella shape Chi Fenzhong mechanism in the height direction; On clamp bottom board with center reference point for foundation, be fixed with central shaft, the top of central shaft is fixed with gripper shoe, and the center of gripper shoe is provided with supporting member; Central shaft is set with center assembly, between the upper end of center assembly and gripper shoe, is provided with extension spring device; Clamp bottom board is fixed with 4 the first float support oil cylinders, correspondingly one by one to 4 the first float support oil cylinders is provided with hydraulic strip clamp.Use the present invention, location, guiding, support, point in all in workpiece cavity, can workpiece deformation be avoided.The present invention has advantage that is succinct, compact, proportional space layout.
Description
Technical field
The present invention relates to the fixture of shell product in processing casting gearbox, especially a kind of mesochite divides middle special fixture.
Background technology
A kind of ten four-speed gear shift case mesochites, housing design wall thickness is 6 millimeters, and the complicated crucial reverse gear hole of inner chamber and control stick hole site must be guaranteed.At present, the fixture of gearbox mesochite first sequence adopt the hole in exocoel and wherein an outer surface location process faying face and two dowel holes.
Shortcoming: the above-mentioned location clipping variation adding operation is difficult to avoid inner chamber distortion to the interference of assembling parts usually, gearbox inner chamber overweights exocoel, be inevitable for box parts deformation of products, how break away from the impact of inner chamber distortion on housing key position.
Summary of the invention
The present invention proposes a kind of mesochite and divides middle special fixture, adopt floating location, middle part, some jig Design thinking that is spacing, inner chamber centering in not contour 6 o'clock minutes of inner chamber, locate, lead, support, divide middle centering all at inner chamber, workpiece (mesochite) can be avoided to be out of shape when location, clamping mesochite.
For this reason, the technical solution used in the present invention is as follows: a kind of mesochite divides middle special fixture, comprises clamp bottom board, it is characterized in that:
(1) on clamp bottom board with center reference point for foundation, be provided with longitudinal umbrella shape Chi Fenzhong mechanism and 2 horizontal umbrella shape Chi Fenzhong mechanisms, 2 horizontal umbrella shape Chi Fenzhong mechanisms are symmetrical, and 2 horizontal umbrella shape Chi Fenzhong mechanisms are positioned on longitudinal umbrella shape Chi Fenzhong mechanism in the height direction;
(1.1) structure of described horizontal umbrella shape Chi Fenzhong mechanism:
(1.1.1) body in comprising point, in point, body bilateral symmetry arranges the left pilot hole of tape guide cover, the right pilot hole of tape guide cover, and in point, the center of body has installation cavity; Be sliding combined with left push rod, right push rod in left pilot hole, right pilot hole respectively, top is all equipped with in the outer end of left push rod and right push rod;
(1.1.2) in installation cavity, bilateral symmetry is provided with left sector tooth block, right sector tooth block, the centre bore of left sector tooth block and right sector tooth block is hinged on point middle body, the outer end of left push rod and right push rod is all provided with tooth bar, left sector tooth block and right sector tooth block corresponding tooth bar engagement;
(1.1.3) cylinder installation seat is fixed with in a point bottom for middle body, one drives oil cylinder to be upwards arranged on cylinder installation seat, drive on the piston rod of oil cylinder and be fixed with pull bar, left sector tooth block and right sector tooth block are inwardly extended with linking arm, the linking arm of left sector tooth block and the linking arm of right sector tooth block by hinge on pull bar; Drive hydraulic oil cylinder driving pull bar, pull bar drives left sector tooth block and right sector tooth block to swing, and makes left push rod and right push rod do symmetrical inside contracting or overhanging rectilinear motion;
(1.2) structure of longitudinal umbrella shape Chi Fenzhong mechanism is identical with the structure of horizontal umbrella shape Chi Fenzhong mechanism, and just dimensional parameters is different;
(2) in the middle of directed guide colume type structure: on clamp bottom board with center reference point for foundation, be fixed with central shaft, the top of central shaft is fixed with gripper shoe, and the center of gripper shoe is provided with supporting member;
(3) middle part floating support structure: central shaft is set with center assembly, is provided with extension spring device between the upper end of center assembly and gripper shoe, make center assembly relative to central axis in elastic suspension state;
(3.1) structure of described center assembly:
(3.1.1) center is slidably matched on center shaft, between center and central shaft, be provided with feather key, and center can only centrally be moved up and down by axle; The upper end of extension spring device is connected with gripper shoe, and the lower end of extension spring device is connected to center upper end;
(3.1.2) lower end of center is fixed with connecting plate, connecting plate is distributed with first block, second block, the 3rd block;
(3.1.3) syndeton of first block on connecting plate: connecting plate is fixed with bearing, and bearing stretches out and is provided with installing hole, a connecting axle is supported on bearing by installing hole rolling cooperation, and first block is fixed by screws in the outer end of connecting axle; Be provided with elastic steel ball positioner at bearing, the steel ball of elastic steel ball positioner withstands in the arc groove of connecting axle;
(3.1.4) second block and the syndeton of the 3rd block on connecting plate identical with first block;
(3.1.5) setting of elastic steel ball positioner, makes described connecting axle can in circumferencial direction minor rotation, to compensate first block, second block and the 3rd block height error each other;
(4) be positioned at center assembly peripheral, clamp bottom board is fixed with 4 the first float support oil cylinders, correspondingly one by one to 4 the first float support oil cylinders be provided with hydraulic strip clamp.
Further restriction to technique scheme: described gripper shoe is uniformly distributed along the circumference and is fixed with 4 the second float support oil cylinders, better can withstand workpiece, improve strength and stiffness further, is out of shape by cutting force when preventing processed.
Further restriction to technique scheme: the both sides correspondence of clamp bottom board is provided with left column, right column, the upper end of left column and the upper end of right column are fixed with 2 the 3rd float support oil cylinders respectively, 3rd float support oil cylinder can withstand workpiece from periphery, further improve strength and stiffness, be out of shape by cutting force when preventing processed.
Beneficial effect: during use, by the top of work piece hoisting to fixture, slowly put into fixture downwards, middle directed guide colume type structure is adopted to realize inner chamber a bit spacing, middle part floating support structure realizes floating location, middle part, umbrella shape Chi Fenzhong mechanism realizes centering in not contour 6 o'clock minutes of inner chamber, location, guiding, support, point in all in workpiece cavity, workpiece (mesochite) can be avoided to be out of shape when location, clamping work pieces.The present invention has advantage that is succinct, compact, proportional space layout.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is along A-A sectional view in figure.
Fig. 3 is along B direction view (enlarged drawing) in figure, is the schematic diagram of middle part floating support structure in the present invention.
Fig. 4 is the first push rod in Fig. 3, the second push rod and the layout drawing of the 3rd push rod on connecting plate (enlarged drawing).
The structure chart of horizontal umbrella shape Chi Fenzhong mechanism in Fig. 5 the present invention.
Fig. 6 is the structure chart of hydraulic strip clamp.
Detailed description of the invention
Shown in composition graphs 1-Fig. 5, further describe the present invention as follows: a kind of mesochite divides middle special fixture, comprises clamp bottom board, and concrete structure is as follows:
(1) on clamp bottom board 1 with center reference point for foundation, be provided with longitudinal umbrella shape Chi Fenzhong mechanism 14 and 2 horizontal umbrella shape Chi Fenzhong mechanisms 2,2 horizontal umbrella shape Chi Fenzhong mechanisms 2 are symmetrical, and 2 horizontal umbrella shape Chi Fenzhong mechanisms 2 are positioned on longitudinal umbrella shape Chi Fenzhong mechanism 14 in the height direction;
(1.1) structure of described horizontal umbrella shape Chi Fenzhong mechanism 2:
(1.1.1) body 203 in comprising point, in point, body bilateral symmetry arranges the left pilot hole 204 of tape guide cover, the right pilot hole 209 of tape guide cover, and in point, the center of body has installation cavity; Be sliding combined with left push rod 202, right push rod 208 respectively in left pilot hole, right pilot hole, top 201 is all equipped with in the outer end of left push rod 202 and right push rod 208;
(1.1.2) in installation cavity, bilateral symmetry is provided with left sector tooth block 213, right sector tooth block 207, the centre bore (respectively by the first bearing pin 205, second bearing pin 210) of left sector tooth block 213 and right sector tooth block 207 is hinged on point middle body 203, the outer end of left push rod 202 and right push rod 208 is all provided with tooth bar, the tooth bar engagement of left sector tooth block 213 and right sector tooth block 207 correspondence;
(1.1.3) cylinder installation seat 214 is fixed with in a point bottom for middle body, one drives oil cylinder 212 to be upwards arranged on cylinder installation seat 214, drive on the piston rod of oil cylinder and be fixed with pull bar 211, left sector tooth block and right sector tooth block are inwardly extended with linking arm, and the linking arm of left sector tooth block 213 and the linking arm of right sector tooth block 207 are hinged on pull bar 211 by bearing pin 206; Drive oil cylinder 212 to drive pull bar 211, pull bar 211 drives left sector tooth block 213 and right sector tooth block 207 to swing, and makes left push rod 202 and right push rod 208 do symmetrical inside contracting or overhanging rectilinear motion;
(1.2) structure of longitudinal umbrella shape Chi Fenzhong mechanism 14 is identical with the structure of horizontal umbrella shape Chi Fenzhong mechanism 2, and just dimensional parameters is different;
(2) in the middle of directed guide colume type structure: on clamp bottom board 1 with center reference point for foundation, be fixed with central shaft 8, the top of central shaft 8 is fixed with gripper shoe 9, and the center of gripper shoe 9 is provided with supporting member 7; Described supporting member 7 is topmost a bulb, to form point cantact location;
(3) middle part floating support structure: central shaft is set with center assembly, is provided with extension spring device 401 between the upper end of center assembly and gripper shoe, make center assembly relative to central axis in elastic suspension state;
(3.1) structure of described center assembly:
(3.1.1) center 402 is slidably matched on central shaft 8, is provided with feather key 405 between center 402 and central shaft 8, and center 402 can only centrally be moved up and down by axle; The upper end of extension spring device 401 is connected with gripper shoe 9, and the lower end of extension spring device 401 is connected to center upper end;
(3.1.2) lower end of center is fixed with connecting plate 407, connecting plate 407 is distributed with first block, 403, second block 409, the 3rd block 410;
(3.1.3) syndeton of first block 403 on connecting plate: connecting plate 407 is fixed with bearing 408, bearing 408 stretches out and is provided with installing hole, a connecting axle 406 is supported on bearing 408 by installing hole rolling cooperation, and first block 403 is fixed by screws in the outer end of connecting axle 406; Be provided with elastic steel ball positioner 404 at bearing 408, the steel ball of elastic steel ball positioner 404 withstands in the arc groove of connecting axle 406;
(3.1.4) second block 409 and the syndeton of the 3rd block 410 on connecting plate identical with first block 403;
(3.1.5) setting of elastic steel ball positioner, makes described connecting axle can in circumferencial direction minor rotation, to compensate first block, second block and the 3rd block height error each other;
(4) be positioned at center assembly peripheral, clamp bottom board is fixed with 4 the first float support oil cylinders 13, correspondingly one by one to 4 the first float support oil cylinders be provided with hydraulic strip clamp 12.
As shown in Figure 1, described gripper shoe is uniformly distributed along the circumference and is fixed with 4 the second float support oil cylinders 5, better can withstand workpiece, improve strength and stiffness further, be out of shape by cutting force when preventing processed.
As shown in Figure 1, the both sides correspondence of clamp bottom board is provided with left column 3, right column 11, the upper end of left column and the upper end of right column are fixed with 2 the 3rd float support oil cylinders 10 respectively, 3rd float support oil cylinder 10 can withstand workpiece from periphery, further improve strength and stiffness, be out of shape by cutting force when preventing processed.
As shown in Figure 1, what label 6 was expressed is workpiece.
In the present invention, the first float support oil cylinder, the second float support oil cylinder and the 3rd float support oil cylinder are all the float support oil cylinders of standard, only in order to distinguish, and the definition carried out.
Hydraulic strip clamp essence described in the present invention is the press plate mechanism that a hydraulic jack drives, and concerning person skilled in art, is known technology, can realizes easily; As shown in Figure 5, a kind of concrete structure of hydraulic strip clamp is described: comprise a mount pad 1304, hydraulic jack 1305 is fixed on below mount pad 1304, the piston rod of hydraulic jack 1305 stretches out above mount pad 1304, the medium position of pressing plate 1301 is hinged with a swing arm 1302, the lower end of swing arm 1302 and the piston rod of hydraulic jack 1305 hinged; The head position of pressing plate 1301 is clamping points, and the tail position of pressing plate 1301 is hinged on mount pad 1304 by bearing 1303.
Described extension spring device 401 is made up of four extension springs.
Described elastic steel ball positioner 404 is known technologies, and structure is: steel ball, spring, plug are linked in sequence.
Workpiece installation process on the invention: during use, by the top of work piece hoisting to fixture, slowly put into fixture downwards, middle directed guide colume type structure is adopted to realize inner chamber a bit spacing, middle part floating support structure realizes floating location, middle part, and umbrella shape Chi Fenzhong mechanism realizes inner chamber centering in not contour 6 o'clock minutes, then starts the first float support oil cylinder corresponding with hydraulic strip clamp, realize self-locking support, restart hydraulic strip clamp and compress; Finally start other float support oil cylinder remaining, realize the supplemental support to workpiece.
Claims (3)
1. mesochite divides a middle special fixture, comprises clamp bottom board, it is characterized in that:
(1) on clamp bottom board with center reference point for foundation, be provided with longitudinal umbrella shape Chi Fenzhong mechanism and 2 horizontal umbrella shape Chi Fenzhong mechanisms, 2 horizontal umbrella shape Chi Fenzhong mechanisms are symmetrical, and 2 horizontal umbrella shape Chi Fenzhong mechanisms are positioned on longitudinal umbrella shape Chi Fenzhong mechanism in the height direction;
(1.1) structure of described horizontal umbrella shape Chi Fenzhong mechanism:
(1.1.1) body in comprising point, in point, body bilateral symmetry arranges the left pilot hole of tape guide cover, the right pilot hole of tape guide cover, and in point, the center of body has installation cavity; Be sliding combined with left push rod, right push rod in left pilot hole, right pilot hole respectively, top is all equipped with in the outer end of left push rod and right push rod;
(1.1.2) in installation cavity, bilateral symmetry is provided with left sector tooth block, right sector tooth block, the centre bore of left sector tooth block and right sector tooth block is hinged on point middle body, the outer end of left push rod and right push rod is all provided with tooth bar, left sector tooth block and right sector tooth block corresponding tooth bar engagement;
(1.1.3) cylinder installation seat is fixed with in a point bottom for middle body, one drives oil cylinder to be upwards arranged on cylinder installation seat, drive on the piston rod of oil cylinder and be fixed with pull bar, left sector tooth block and right sector tooth block are inwardly extended with linking arm, the linking arm of left sector tooth block and the linking arm of right sector tooth block by hinge on pull bar; Drive hydraulic oil cylinder driving pull bar, pull bar drives left sector tooth block and right sector tooth block to swing, and makes left push rod and right push rod do symmetrical inside contracting or overhanging rectilinear motion;
(1.2) structure of longitudinal umbrella shape Chi Fenzhong mechanism is identical with the structure of horizontal umbrella shape Chi Fenzhong mechanism, and just dimensional parameters is different;
(2) in the middle of directed guide colume type structure: on clamp bottom board with center reference point for foundation, be fixed with central shaft, the top of central shaft is fixed with gripper shoe, and the center of gripper shoe is provided with supporting member;
(3) middle part floating support structure: central shaft is set with center assembly, is provided with extension spring device between the upper end of center assembly and gripper shoe, make center assembly relative to central axis in elastic suspension state;
(3.1) structure of described center assembly:
(3.1.1) center is slidably matched on center shaft, between center and central shaft, be provided with feather key, and center can only centrally be moved up and down by axle; The upper end of extension spring device is connected with gripper shoe, and the lower end of extension spring device is connected to center upper end;
(3.1.2) lower end of center is fixed with connecting plate, connecting plate is distributed with first block, second block, the 3rd block;
(3.1.3) syndeton of first block on connecting plate: connecting plate is fixed with bearing, and bearing stretches out and is provided with installing hole, a connecting axle is supported on bearing by installing hole rolling cooperation, and first block is fixed by screws in the outer end of connecting axle; Be provided with elastic steel ball positioner at bearing, the steel ball of elastic steel ball positioner withstands in the arc groove of connecting axle;
(3.1.4) second block and the syndeton of the 3rd block on connecting plate identical with first block;
(3.1.5) setting of elastic steel ball positioner, makes described connecting axle can in circumferencial direction minor rotation, to compensate first block, second block and the 3rd block height error each other;
(4) be positioned at center assembly peripheral, clamp bottom board is fixed with 4 the first float support oil cylinders, correspondingly one by one to 4 the first float support oil cylinders be provided with hydraulic strip clamp.
2. a kind of mesochite divides middle special fixture according to claim 1, it is characterized in that: gripper shoe is uniformly distributed along the circumference and is fixed with 4 the second float support oil cylinders.
3. according to claim 1 or 2, a kind of mesochite divides middle special fixture, and the both sides correspondence of clamp bottom board is provided with left column, right column, and the upper end of left column and the upper end of right column are fixed with 2 the 3rd float support oil cylinders respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410288382.2A CN104057322B (en) | 2014-06-25 | 2014-06-25 | A kind of mesochite divides middle special fixture |
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| CN201410288382.2A CN104057322B (en) | 2014-06-25 | 2014-06-25 | A kind of mesochite divides middle special fixture |
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| CN104057322A CN104057322A (en) | 2014-09-24 |
| CN104057322B true CN104057322B (en) | 2016-04-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141952B (en) * | 2015-04-17 | 2018-06-12 | 深圳市裕展精密科技有限公司 | Positioning device |
| CN106425734B (en) * | 2016-08-29 | 2018-08-03 | 中航动力股份有限公司 | Aero-engine finish forge stator blade intake and exhaust edge numerical control sbrasive belt grinding tooling |
| CN113997091B (en) * | 2021-11-30 | 2024-02-02 | 湖南运达机电科技股份有限公司 | Floating center-dividing hydraulic clamp |
| CN115723074B (en) * | 2022-12-06 | 2023-06-20 | 江苏恒力组合机床有限公司 | Heavy-duty fixed fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1133858A (en) * | 1997-07-16 | 1999-02-09 | Yamazaki Mazak Corp | Machine tool |
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| CN202155712U (en) * | 2011-06-22 | 2012-03-07 | 天润曲轴股份有限公司 | Self-centering device for crankshaft connecting rod journal |
| CN102501090A (en) * | 2011-10-31 | 2012-06-20 | 南通爱慕希机械有限公司 | Machining fixture device used for base seat part |
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