CN103567859B - Star ring type multi-hole position expansion clamping device - Google Patents

Star ring type multi-hole position expansion clamping device Download PDF

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Publication number
CN103567859B
CN103567859B CN201210283757.7A CN201210283757A CN103567859B CN 103567859 B CN103567859 B CN 103567859B CN 201210283757 A CN201210283757 A CN 201210283757A CN 103567859 B CN103567859 B CN 103567859B
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China
Prior art keywords
star
shaped groove
expander assembly
ring
round briquetting
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CN201210283757.7A
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CN103567859A (en
Inventor
汪琦
唐宏亮
黄智俊
孙志平
朱力敏
杨嘉祥
施雯斌
俞整伟
苏信华
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SHANGHAI AEROSPACE CONTROL ENGINEERING INSTITUTE
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SHANGHAI AEROSPACE CONTROL ENGINEERING INSTITUTE
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/27Work carriers
    • B24B37/30Work carriers for single side lapping of plane surfaces

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention provides star ring type multi-hole position expansion clamping device, comprise V-shaped groove star cyclic group frame, circular expander assembly, circular expander assembly is placed in V-shaped groove star cyclic group frame, described V-shaped groove star cyclic group frame is a flat board, the star ring that several V-shaped grooves are formed is provided with in flat board, circular expander assembly inserts in V-shaped groove star ring, and radial direction can uniform circular expansion external drum under responsive to axial force for circular expander assembly, will be placed in the thin-walled hollow tubulose part radial clamping between V-shaped groove star ring and circular expander assembly.The present invention adopts two rubber rings to be radially expanded between external drum and V-shaped groove star ring and locates thin-walled hollow tubulose part, and clamping force is even, can ensure thin-walled hollow tubulose part perpendicularity, avoids locating deviation.Improve working (machining) efficiency, reduce grinding difficulty, solve the end face precision of small-diameter thin wall hollow tubular part.

Description

Star ring type multi-hole position expansion clamping device
Technical field
The present invention relates to fixture, in particular for the fast fixture of lapping diameter little high accuracy thin-wall hollow pipe both ends of the surface.
Background technology
Thin-walled hollow tube components is the part on carrier rocket, its outside dimension little (Φ 6.35 ㎜), wall thickness 0.75, both ends of the surface dimensional accuracy and form and position tolerance required precision is high, quantity is large.For guaranteeing both ends of the surface flatness dimension precision requirement, existing frock adopts the mode of cylindrical hole location and bolt clamping to process.Its Problems existing is: the sharp processing dimensional uniformity due to thin-wall hollow pipe workpiece is difficult to ensure, therefore frock cylindrical hole is easily caused not mate with thin-wall hollow pipe excircle of workpiece size, cause gap value between the two excessive, make thin-wall hollow pipe workpiece be in free positioning states; Because gap value is excessive, under the effect of external force, thin-wall hollow pipe workpiece can produce the movement of trace, is difficult to meet thin-wall hollow pipe planeness of workpiece 0.002 ㎜, the requirement of perpendicularity 0.005 ㎜; Thin-wall hollow pipe workpiece directly locked by existing frock bolt simultaneously, easily causes piece surface to damage.
Summary of the invention
The technical problem to be solved in the present invention is to provide star ring type multi-hole position expansion clamping device, and it accurately can be located, evenly clamp, and effectively can ensure the grinding precision processing end face plane degree.
For solving the problems of the technologies described above, star ring type multi-hole position expansion clamping device of the present invention, comprise V-shaped groove star cyclic group frame, circular expander assembly, circular expander assembly is placed in V-shaped groove star cyclic group frame, described V-shaped groove star cyclic group frame is a flat board, in dull and stereotyped, star ring is two, and each star ring is made up of 15 90 ° of V-shaped grooves.Circular expander assembly inserts in the V-shaped groove star ring of V-shaped groove star cyclic group frame, and radial direction can uniform circular expansion external drum under responsive to axial force for circular expander assembly, will be placed in the thin-wall hollow pipe workpiece radial clamping between V-shaped groove star ring and circular expander assembly.
Described circular expander assembly comprises, lower round briquetting, adapter ring, two rubber rings, hexagon socket head cap screw, there is a step circle upper round briquetting lower end, a little convex cylindrical is established in the bottom of step circle, upper round briquetting is provided with centre bore, there is a step circle lower round briquetting upper end, a little recessed circular hole matched with the little convex cylindrical of upper round briquetting is provided with in step circle, lower round briquetting center is provided with screw, on, the step circle of lower round briquetting is equipped with a rubber ring respectively, the diameter of two rubber rings is identical, the internal diameter of adapter ring is placed on, on the step circle of lower round briquetting, two planes of adapter ring contact with rubber ring, hexagon socket head cap screw is by upper round clamp block, adapter ring, two rubber rings, lower round briquetting fixed together.When hexagon socket head cap screw is tightened, two planes of adapter ring are stressed to be compressed two rubber rings contacted with it, thus makes the radial even inflation external drum of two rubber rings.
Described clamping device also comprises the technique assembling auxiliary member of benchmark chassis, benchmark cover plate, benchmark chassis, V-shaped groove star cyclic group frame, circular expander assembly, benchmark cover plate is connected by screw.Technique assembling auxiliary member is Set and Positioning use, dismantles after clamping, need not during grinding.Mainly ensure Set and Positioning precision, avoid injuring part.Because grind is less, control the reference dimension in thin-walled hollow tubulose part two plane length direction with benchmark chassis and benchmark cover plate, ensure that the length of a transverse plane and pedestal size distance controlling are within ± 0.005mm.
Compared with prior art, its advantage and beneficial effect are in the present invention:
Adopt between upper and lower two rubber rings and V-shaped groove star ring and locate thin-wall hollow pipe workpiece, the clamping force that a starlike circle is radially expanded external drum is even, can ensure that thin-walled hollow tubulose part perpendicularity is within the scope of 0.005 ㎜, avoids locating deviation.
Improve working (machining) efficiency, reduce grinding difficulty, improve the end face machining accuracy of thin-wall hollow pipe workpiece, its flatness is within the scope of 0.002 ㎜.
Accompanying drawing explanation
Below with reference to accompanying drawing and example, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the partial enlarged drawing of the internal expansion assembly of Fig. 1.
In figure: benchmark cover plate 1, thin-wall hollow pipe workpiece 2, V-shaped groove star cyclic group frame 3, benchmark chassis 4, dog screw 5, circular expander assembly 6(comprises: rubber ring 7, hexagon socket head cap screw 8, lower round briquetting 9, adapter ring 10, upper round briquetting 11).
Detailed description of the invention
As shown in Figure 1 and Figure 2, star ring type multi-hole position expansion clamping device, comprises V-shaped groove star cyclic group frame 3, circular expander assembly 6, circular expander assembly 6 is placed in V-shaped groove star cyclic group frame 3, V-shaped groove star cyclic group frame 3 is flat boards, and in dull and stereotyped, star ring is two, and each star ring is made up of 15 90 ° of V-shaped grooves.Circular expander assembly 6 inserts in V-shaped groove star ring, and circular expander assembly 6 radial direction can even inflation, changes the distance between V-shaped groove star ring and circular expander assembly 6.Circular expander assembly 6 is under hexagon socket head cap screw 8 responsive to axial force, constantly screw and cause the radial homogeneous deformation external drum of rubber ring 7, to thin-wall hollow pipe workpiece 2 radial clamping between V-shaped groove star ring and circular expander assembly 6 be placed in, adopt this clamping device not injuring part body while guarantee Set and Positioning precision.
Clamping device also comprises the technique assembling auxiliary member of benchmark chassis 4, benchmark cover plate 1, benchmark chassis 4, V-shaped groove star cyclic group frame 3, circular expander assembly 6, benchmark cover plate 1 is linked together by dog screw 5.Technique assembling auxiliary member is Set and Positioning use, dismantles after clamping, need not during grinding.Mainly ensure Set and Positioning precision, avoid injuring part.Because grind is less, control the reference dimension of thin-wall hollow pipe workpiece 2 end flat length direction with benchmark chassis 4 and benchmark cover plate 1, ensure that size Control between the length of thin-wall hollow pipe workpiece 2 one transverse plane and V-shaped groove star cyclic group frame 3 is within ± 0.005mm.
As Fig. 1, shown in Fig. 3, circular expander assembly 6 comprises round briquetting 11, lower round briquetting 9, adapter ring 10, two rubber rings 7, hexagon socket head cap screw 8, there is a step circle upper round briquetting 11 lower end, the bottom of step circle is processed with a little convex cylindrical, upper round briquetting 11 is processed with centre bore, there is a step circle lower round briquetting 9 upper end, a little recessed circular hole matched with the little convex cylindrical of upper round briquetting 11 is processed with in step circle, lower round briquetting 9 center is processed with screw, on, lower round briquetting 11, the step circle of 9 is equipped with a rubber ring 7 respectively, the diameter of two rubber rings 7 is identical, the internal diameter of adapter ring 10 is placed on, lower round briquetting 11, on the step circle of 9, two planes of adapter ring 10 contact with rubber ring 7, hexagon socket head cap screw 8 is by upper round briquetting 11, adapter ring 10, two rubber rings 7, lower round briquetting 9 fixed together.When hexagon socket head cap screw 8 is tightened, two planes of adapter ring 10 are stressed to be compressed contact with it two rubber rings 7, and two rubber rings 7 are radially expanded external drum.
When filling circular expander assembly 6, hexagon socket head cap screw 8 is not first locked, and only plays connection function.Circular expander assembly 6 is positioned in two V-type groove star rings of V-shaped groove star cyclic group frame 3, and hold by below benchmark chassis 4, successively 15 thin-wall hollow pipe workpiece 2 are put into the V-type groove of V-shaped groove star cyclic group frame 3 subsequently, cover benchmark cover plate 1, after adjusting to correct zero reference a little, use die nut to be locked by hexagon socket head cap screw 8, make circular expander assembly 6 pairs of thin-wall hollow pipe workpiece 2 produce chucking power, complete clamping process.
In sum, diameter little thin-wall hollow pipe workpiece 2 adopts between upper and lower two rubber rings 7 and V-shaped groove star cyclic group frame 3 and locates, rubber ring 7 even inflation external drum is relied on to make radial clamping, ensure that the perpendicularity of thin-wall hollow pipe workpiece 2 is within the scope of 0.005 ㎜, solve the end face machining accuracy of thin-wall hollow pipe workpiece 2, its flatness reaches within the scope of 0.002 ㎜.

Claims (3)

1. star ring type multi-hole position expansion clamping device, it is characterized in that: comprise V-shaped groove star cyclic group frame, circular expander assembly, circular expander assembly is placed in V-shaped groove star cyclic group frame, described V-shaped groove star cyclic group frame is a flat board, the star ring that several V-shaped grooves are formed is provided with in flat board, circular expander assembly inserts in the V-shaped groove star ring of V-shaped groove star cyclic group frame, and under responsive to axial force, the radial evenly external drum of circular expander assembly, changes the distance between V-shaped groove star ring and circular expander assembly.
2. star ring type multi-hole position expansion clamping device according to claim 1, it is characterized in that: described circular expander assembly comprises round briquetting, lower round briquetting, adapter ring, two rubber rings, hexagon socket head cap screw, there is a step circle upper round briquetting lower end, a little convex cylindrical is established in the bottom of step circle, upper round briquetting is provided with centre bore, there is a step circle lower round briquetting upper end, a little recessed circular hole matched with the little convex cylindrical of upper round briquetting is provided with in step circle, lower round briquetting center is provided with screw, upper round briquetting, the step circle of lower round briquetting is respectively equipped with a rubber ring, the internal diameter of adapter ring is placed on round briquetting, on the step circle of lower round briquetting, two planes of adapter ring contact with rubber ring, hexagon socket head cap screw is by upper round briquetting, adapter ring, two rubber rings, lower round briquetting fixed together.
3. star ring type multi-hole position expansion clamping device according to claim 1, it is characterized in that: described star ring type multi-hole position expansion clamping device also comprises benchmark chassis and benchmark cover plate, benchmark chassis, V-shaped groove star cyclic group frame, circular expander assembly, benchmark cover plate, as technique assembling auxiliary member, are connected by screw by the two.
CN201210283757.7A 2012-08-10 2012-08-10 Star ring type multi-hole position expansion clamping device Active CN103567859B (en)

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CN103567859B true CN103567859B (en) 2016-03-30

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384946A (en) * 2014-09-11 2015-03-04 上海航天精密机械研究所 Clamping device suitable for milling wall plate of storage box of carrier rocket
CN107813004B (en) * 2017-10-30 2024-04-12 广东全球通管网有限公司 Automatic pipeline cutting machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201455752U (en) * 2009-04-28 2010-05-12 河南工业大学 Jig for processing thin-wall sleeve type parts
CN101954604A (en) * 2010-07-30 2011-01-26 东方电气集团东方汽轮机有限公司 Annular thin-wall article clamping device and using method thereof
CN201792216U (en) * 2010-09-21 2011-04-13 沈阳黎明航空发动机(集团)有限责任公司 Expanded tire shock-absorbing device for machining annular thin-walled part

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3936173B2 (en) * 2001-11-12 2007-06-27 株式会社マルエム Mounting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201455752U (en) * 2009-04-28 2010-05-12 河南工业大学 Jig for processing thin-wall sleeve type parts
CN101954604A (en) * 2010-07-30 2011-01-26 东方电气集团东方汽轮机有限公司 Annular thin-wall article clamping device and using method thereof
CN201792216U (en) * 2010-09-21 2011-04-13 沈阳黎明航空发动机(集团)有限责任公司 Expanded tire shock-absorbing device for machining annular thin-walled part

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