CN103394935A - Pneumatic expansion type clamp - Google Patents

Pneumatic expansion type clamp Download PDF

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Publication number
CN103394935A
CN103394935A CN2013103470771A CN201310347077A CN103394935A CN 103394935 A CN103394935 A CN 103394935A CN 2013103470771 A CN2013103470771 A CN 2013103470771A CN 201310347077 A CN201310347077 A CN 201310347077A CN 103394935 A CN103394935 A CN 103394935A
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CN
China
Prior art keywords
plate
location
expansion sleeve
expansion
pneumatic
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Application number
CN2013103470771A
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Chinese (zh)
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CN103394935B (en
Inventor
赵磊
孙小平
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合肥长源液压股份有限公司
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Priority to CN201310347077.1A priority Critical patent/CN103394935B/en
Publication of CN103394935A publication Critical patent/CN103394935A/en
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Publication of CN103394935B publication Critical patent/CN103394935B/en

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Abstract

The invention discloses a pneumatic expansion type clamp. The pneumatic expansion type clamp comprises a base plate, two supporting plates, a positioning plate, a pulling rod, an expansion sleeve, a cross rod and an air cylinder, wherein the two supporting plates are respectively erected at two sides of the top surface of the base plate, the positioning plate is located at the top ends of the two supporting plates and is fixedly connected with the two supporting plates, a pulling rod and an expansion sleeve which penetrate through a top plate are arranged on the top plate, the lower end of the pulling rod and the lower end of the expansion sleeve are both fixedly connected with the cross rod, and the cross rod is fixedly connected with a piston of the air cylinder. The pneumatic expansion type clamp is particularly suitable for fine machining of outlines and end surfaces of integrated shaft sleeve parts, and has the advantages of being convenient and rapid to clamp, being capable of improving machining accuracy of the integrated shaft sleeves, improving production efficiency and the like.

Description

Pneumatic expansion chuck tool
Technical field
The present invention relates to a kind of machining fixture, especially a kind of solid box External Shape and accurately machined pneumatic expansion chuck tool of end face of being applicable to.
Background technology
Solid box is one of strength member of hydraulic gear pump (motor), the axiality of solid box to its cylindrical and endoporus, and the perpendicularity of cylindrical and end face all has very high requirement, the properties of product of its processing precision direct influence hydraulic gear pump (motor).Existing processing technology, or the method for adopting process step, or adopt expansion sleeve, with two soket head cap screws changing a social system, manually compress expansion sleeve, thus clamping work pieces.The adopting process step has increased processing step, extension of the work cycle, has improved processing cost; In expansion sleeve hand-operated clamping mode, two screws need to be tightened respectively, and processing is longer non-cutting time, if and the operator operates lack of standardization, after first tightening on one side, twist again another side, may cause work piece periphery and bottom surface perpendicularity overproof, affect Product Precision.
Summary of the invention
The present invention is the weak point that exists in above-mentioned prior art for avoiding, provide the pneumatic expansion chuck tool that a kind of convenient mounting and clamping is quick, machining accuracy is high, with machining accuracy and the working (machining) efficiency of the clamping efficiency that improves solid box and setting accuracy, raising axle sleeve.
The present invention be the technical solution problem by the following technical solutions.
Pneumatic expansion chuck tool, its design feature are to comprise base plate, two gripper shoes, location-plate, pull bar, expansion sleeve, cross bar and cylinders; Described two gripper shoes are stood on respectively the end face both sides of described base plate, and described location-plate is positioned at the top of described two gripper shoes and is fixedly connected with described two gripper shoes; Described location-plate is provided with described pull bar and the described expansion sleeve that penetrates described location-plate; The lower end of described pull bar and the lower end of described expansion sleeve all are fixedly connected with described cross bar, and the piston of described cross bar and described cylinder is fixedly connected.
The design feature of pneumatic expansion chuck tool of the present invention also is:
Described gripper shoe top is provided with screw, and described location-plate is provided with the through hole that penetrates described location-plate along the thickness direction of described location-plate, and screw passes and describedly by screwing in described screw, described location-plate and gripper shoe is fixed together.
Described expansion sleeve comprises the concentric expanding block of pedestal and a plurality of concentric settings; Described a plurality of concentric expanding block is arranged at the top of described pedestal, between adjacent two concentric expanding blocks, is provided with open slot, and the lower end of each open slot is provided with the through hole that penetrates described concentric expanding block along the thickness direction of described concentric expanding block.
The endoporus that the concentric expanding block at the pedestal top of described expansion sleeve surrounds is with 15 °~20 ° taperings; The top of pull bar is also with tapering, large 1 °~2 ° of the tapering of the endoporus that the described concentric expanding block of the taper ratio of described pull bar surrounds.
Compared with the prior art, beneficial effect of the present invention is embodied in:
pneumatic expansion chuck tool of the present invention, location-plate is by gripper shoe and bottom plate connecting, form rack and panel construction, by whole its location-plate face of plain grinding of the rack and panel construction after assembling, then on the location-plate face, process the expansion sleeve bottom outlet, centre-to-centre spacing is institute's processing parts two locating hole centre-to-centre spacing, two expansion sleeves of interference assembling, the depth of parallelism of fixture locating surface and bottom surface and the perpendicularity requirement of expansion sleeve and bottom surface have so just been guaranteed, the expansion sleeve top axle is to uniform six open slots, each decile groove lower end is the hole of diameter greater than groove width, expansion sleeve endoporus and pull bar upper end are all with tapering, two pull bars pass respectively two expansion sleeves, bottom is connected and fixed by cross bar and cylinder piston rod, cylinder is selected thin cylinder, be arranged on base plate, be positioned at rack and panel construction, hand-operated direction valve and pneumatic line are according to lathe situation reasonable Arrangement, on air inlet pipeline, dress filters, decompression, the atomization three linked piece.With hand-operated direction valve, control, during clamping, cylinder piston rod drives simultaneously two pull bars by cross bar and pulls down, make the expansion sleeve top produce strain and then swelling workpiece, realize the clamping of work piece, the tapering of pull bar is slightly larger than expansion sleeve, so as when tension masterpiece be used in top, increase arm of force length; While unclamping, cylinder piston rod drives pull bar and rises, and expansion sleeve relies on elastical retraction, realizes the pine folder.
Pneumatic expansion chuck tool of the present invention, be particularly useful for solid box External Shape and end face fine finishining, has that convenient mounting and clamping is quick, a machining accuracy that can improve solid box, the advantage such as enhance productivity.
The accompanying drawing explanation
Fig. 1 is the structure chart of pneumatic expansion chuck tool of the present invention.
Fig. 2 is the schematic diagram of the pneumatic circuit of synchronous pneumatic expansion chuck tool of the present invention.
Fig. 3 is the stereogram of the expansion sleeve of pneumatic expansion chuck tool of the present invention.
Fig. 4 is the cutaway view of the expansion sleeve of pneumatic expansion chuck tool of the present invention.
Fig. 5 is the front view of the work piece (solid box) of pneumatic expansion chuck tool clamping of the present invention.
Fig. 6 is the A-A cutaway view of Fig. 5.
Label in accompanying drawing 1~accompanying drawing 6: 1 base plate, 2 gripper shoes, 3 location-plates, 4 pull bars, 5 expansion sleeves, 501 concentric expanding blocks, 502 pedestals, 503 open slots, 504 through holes, 505 endoporus, 6 work pieces (solid box), 7 cross bars, 8 cylinders, 9 filtrations, decompression, atomization three linked piece, 10 hand-operated direction valves, 11 screws.
Below pass through the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment
Referring to accompanying drawing 1~accompanying drawing 6, pneumatic expansion chuck tool comprises base plate 1, two gripper shoes 2, location-plate 3, pull bar 4, expansion sleeve 5, cross bar 7 and cylinders 8; Described two gripper shoes 2 are stood on respectively the end face both sides of described base plate 1, and described location-plate 3 is positioned at the top of described two gripper shoes 2 and is fixedly connected with described two gripper shoes 2; Described location-plate 3 is provided with described pull bar 4 and the described expansion sleeve 5 that penetrates described location-plate 3; The lower end of the lower end of described pull bar 4 and described expansion sleeve 5 all is fixedly connected with described cross bar 7, and described cross bar 7 is fixedly connected with the piston of described cylinder 8.
Described gripper shoe 2 tops are provided with screw, and described location-plate 3 is provided with the through hole that penetrates described location-plate 3 along the thickness direction of described location-plate 3, and screw 11 passes and describedly by screwing in described screw, described location-plate 3 and gripper shoe 2 is fixed together.
Described expansion sleeve 5 comprises the concentric expanding block 501 of pedestal 502 and a plurality of concentric settings; Described a plurality of concentric expanding block 501 is arranged at the top of described pedestal 502, between adjacent two concentric expanding blocks 501, be provided with open slot 503, the lower end of each open slot 503 is provided with the through hole 504 that penetrates described concentric expanding block 501 along the thickness direction of described concentric expanding block 501.
The endoporus 505 that the concentric expanding block 501 at pedestal 502 tops of described expansion sleeve 5 surrounds is with 15 °~20 ° taperings; The top of pull bar 4 is also with tapering, large 1 °~2 ° of the tapering of the endoporus 505 that the described concentric expanding block 501 of the taper ratio of described pull bar 4 surrounds.
Pneumatic expansion chuck tool of the present invention, comprise the parts such as base plate, gripper shoe, location-plate, pull bar, expansion sleeve, cross bar, cylinder, filtration, decompression, atomization three linked piece, hand-operated direction valve.Described location-plate forms rack and panel construction by gripper shoe and bottom plate connecting; Two expansion sleeves of interference assembling on location-plate, centre-to-centre spacing is institute's processing parts two locating hole centre-to-centre spacing; Two pull bars pass respectively two expansion sleeves, and bottom is connected and fixed by cross bar and cylinder piston rod; Cylinder is arranged on base plate.Described expansion sleeve and pull bar upper end are all with tapering, and the tapering of pull bar is slightly larger than expansion sleeve, so as when tension masterpiece be used in top; Described cylinder is selected thin cylinder, on air inlet pipeline, fill filtration, decompression, atomization three linked piece, hand-operated direction valve control cylinder piston rod and to drive simultaneously two pull bars by cross bar flexible, and then make two expansion sleeve swellings or retraction, realize the clamping and pine folder of work piece.Fixture convenient mounting and clamping of the present invention, quick, machining accuracy is high, has effectively guaranteed quality and the working (machining) efficiency of workpiece.
Described location-plate 3 connects with base plate 1 by gripper shoe 2, forms rack and panel construction; Two expansion sleeves 5 of interference assembling on location-plate 3, centre-to-centre spacing is institute's processing parts two locating hole centre-to-centre spacing; Two pull bars 4 pass respectively two expansion sleeves 5, and bottom is connected and fixed by cross bar 7 and the piston rod of cylinder 8; Cylinder 8 is arranged on base plate 1.
Expansion sleeve 5 top endoporus are with 15 °~20 ° taperings, and pull bar 4 tops are also with tapering, and the tapering of pull bar is slightly larger than 1 °~2 ° of expansion sleeves.Expansion sleeve 5 materials adopt 65Mn, and after heat treatment, working portion 301 hardness in top are 57~62HRC, and afterbody 302 hardness are 40~45HRC.
Two pull bar 4 bottoms are connected and fixed by cross bar 7 and the piston rod of cylinder 8, and the piston rod of cylinder 8 can drive simultaneously two pull bars and produce interlock.Pneumatic expansion chuck tool of the present invention, adopt pneumatic control, and convenient mounting and clamping is quick, enhances productivity, and reduces labour intensity, and pneumatic circuit is clean, environmental protection, utilizes the expansion sleeve strain, accurate positioning, and machining accuracy is high.
location-plate 3 connects with base plate 1 by gripper shoe 2, form rack and panel construction, by whole its location-plate face of plain grinding of the rack and panel construction after assembling, then on the location-plate face, process the expansion sleeve bottom outlet, centre-to-centre spacing is 6 liang of locating hole centre-to-centre spacing of institute's processing parts, two expansion sleeves 5 of interference assembling, the depth of parallelism of fixture locating surface and bottom surface and the perpendicularity requirement of expansion sleeve and bottom surface have so just been guaranteed, expansion sleeve 5 top axle are to uniform six open slots 503, each decile groove lower end is the hole of diameter greater than groove width, expansion sleeve 5 endoporus and pull bar 4 upper ends are all with tapering, two pull bars 4 pass respectively two expansion sleeves 5, bottom is connected and fixed by cross bar 7 and cylinder 8 piston rods, cylinder 8 is selected thin cylinder, be arranged on base plate 1, be positioned at rack and panel construction, hand-operated direction valve 10 and pneumatic line are according to lathe situation reasonable Arrangement, on air inlet pipeline, dress filters, decompression, atomization three linked piece 9.With hand-operated direction valve 10, control, during clamping, cylinder 8 piston rods drive simultaneously two pull bars 4 by cross bar 7 and pull down, make expansion sleeve 5 tops produce strain and then swelling workpiece 6, realize the clamping of work piece, the tapering of pull bar is slightly larger than expansion sleeve, so as when tension masterpiece be used in top, increase arm of force length; While unclamping, cylinder 8 piston rods drive pull bar 4 and rise, and expansion sleeve 5 relies on elastical retraction, realizes the pine folder.
The present invention utilizes the expansion sleeve strain, accurate positioning, and machining accuracy is high, adopts pneumatic control, and convenient mounting and clamping is quick, enhances productivity, and reduces labour intensity, and pneumatic circuit is clean, environmental protection.

Claims (4)

1. pneumatic expansion chuck tool, is characterized in that, comprises base plate (1), two gripper shoes (2), location-plate (3), pull bar (4), expansion sleeve (5), cross bar (7) and cylinder (8); Described two gripper shoes (2) are stood on respectively the end face both sides of described base plate (1), and described location-plate (3) is positioned at the top of described two gripper shoes (2) and is fixedly connected with described two gripper shoes (2); Described location-plate (3) is provided with described pull bar (4) and the described expansion sleeve (5) that penetrates described location-plate (3); The lower end of the lower end of described pull bar (4) and described expansion sleeve (5) all is fixedly connected with described cross bar (7), and described cross bar (7) is fixedly connected with the piston of described cylinder (8).
2. pneumatic expansion chuck tool according to claim 1, it is characterized in that, described gripper shoe (2) top is provided with screw, described location-plate (3) is provided with the through hole that penetrates described location-plate (3) along the described thickness direction of determining plate (3), and screw (11) passes and describedly by screwing in described screw, described location-plate (3) and gripper shoe (2) is fixed together.
3. according to claim 1 with 2 described pneumatic expansion chuck tools, is characterized in that, described expansion sleeve (5) comprises the concentric expanding block (501) of pedestal (502) and a plurality of concentric settings; Described a plurality of concentric pieces (501) are arranged at the top of described pedestal (502), between adjacent two concentric pieces (501), be provided with open slot (503), the lower end of each open slot (503) is provided with the through hole (504) that penetrates described concentric expanding block (501) along the thickness direction of described concentric expanding block (501).
4. according to claim 1,2 and 3 described pneumatic expansion chuck tools, it is characterized in that, the endoporus (505) that the concentric expanding block (501) at pedestal (502) top of described expansion sleeve (5) surrounds is with 15 °~20 ° taperings, the top of pull bar (4) is also with tapering, large 1 °~2 ° of the tapering of the endoporus (505) that the described concentric expanding block of the taper ratio of described pull bar (4) (501) surrounds.
CN201310347077.1A 2013-08-09 2013-08-09 Pneumatic expansion type clamp CN103394935B (en)

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CN103394935A true CN103394935A (en) 2013-11-20
CN103394935B CN103394935B (en) 2016-11-23

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104772502A (en) * 2015-04-17 2015-07-15 柳州蔚园塑料彩印包装有限责任公司 Inclined hole drilling fixture
CN104772496A (en) * 2015-04-17 2015-07-15 柳州蔚园塑料彩印包装有限责任公司 Drilling method for inclined hole
CN106755919A (en) * 2016-12-25 2017-05-31 重庆市骞焰机械有限责任公司 Shaft member is heat-treated clamp method
CN107843226A (en) * 2017-12-09 2018-03-27 无锡特恒科技有限公司 Detent mechanism in point
CN110449651A (en) * 2019-06-25 2019-11-15 浙江尚品店配信息科技有限公司 A kind of guillotine for clothes showing shelf crossbeam

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87201957U (en) * 1987-03-23 1988-08-31 长春第一汽车制造厂 Clamp for machining outside circularity of cylinder sleeve of motor
US20070063406A1 (en) * 2005-09-07 2007-03-22 Hardinge, Inc. Workholding clamping assembly
CN201516564U (en) * 2009-09-18 2010-06-30 江苏太平洋精锻科技股份有限公司 Conical surface lathe machining clamp for combined gears
CN201828227U (en) * 2010-10-28 2011-05-11 常州市武滚轴承有限公司 Radial windage inspection instrument for rolling bearing
CN202639413U (en) * 2012-06-21 2013-01-02 重庆歇马机械曲轴有限公司 Drilling clamp of flange plate
CN203003556U (en) * 2013-01-15 2013-06-19 成都西菱动力部件有限公司 Hydraulic quick-change clamp for drilling and tapping machining of belt pulley
CN203449015U (en) * 2013-08-09 2014-02-26 合肥长源液压股份有限公司 Pneumatic expansion type clamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87201957U (en) * 1987-03-23 1988-08-31 长春第一汽车制造厂 Clamp for machining outside circularity of cylinder sleeve of motor
US20070063406A1 (en) * 2005-09-07 2007-03-22 Hardinge, Inc. Workholding clamping assembly
CN201516564U (en) * 2009-09-18 2010-06-30 江苏太平洋精锻科技股份有限公司 Conical surface lathe machining clamp for combined gears
CN201828227U (en) * 2010-10-28 2011-05-11 常州市武滚轴承有限公司 Radial windage inspection instrument for rolling bearing
CN202639413U (en) * 2012-06-21 2013-01-02 重庆歇马机械曲轴有限公司 Drilling clamp of flange plate
CN203003556U (en) * 2013-01-15 2013-06-19 成都西菱动力部件有限公司 Hydraulic quick-change clamp for drilling and tapping machining of belt pulley
CN203449015U (en) * 2013-08-09 2014-02-26 合肥长源液压股份有限公司 Pneumatic expansion type clamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104772502A (en) * 2015-04-17 2015-07-15 柳州蔚园塑料彩印包装有限责任公司 Inclined hole drilling fixture
CN104772496A (en) * 2015-04-17 2015-07-15 柳州蔚园塑料彩印包装有限责任公司 Drilling method for inclined hole
CN106755919A (en) * 2016-12-25 2017-05-31 重庆市骞焰机械有限责任公司 Shaft member is heat-treated clamp method
CN106755919B (en) * 2016-12-25 2018-02-13 重庆市骞焰机械有限责任公司 Shaft member is heat-treated clamp method
CN107843226A (en) * 2017-12-09 2018-03-27 无锡特恒科技有限公司 Detent mechanism in point
CN110449651A (en) * 2019-06-25 2019-11-15 浙江尚品店配信息科技有限公司 A kind of guillotine for clothes showing shelf crossbeam
CN110449651B (en) * 2019-06-25 2020-07-07 浙江尚品店配信息科技有限公司 A guillootine for clothing show shelf crossbeam

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