CN105234686A - Self-centering clamping oil cylinder structure - Google Patents
Self-centering clamping oil cylinder structure Download PDFInfo
- Publication number
- CN105234686A CN105234686A CN201510810853.6A CN201510810853A CN105234686A CN 105234686 A CN105234686 A CN 105234686A CN 201510810853 A CN201510810853 A CN 201510810853A CN 105234686 A CN105234686 A CN 105234686A
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- China
- Prior art keywords
- piston rod
- cylinder
- piston
- self
- rod body
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Classifications
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
Abstract
The invention discloses a self-centering clamping oil cylinder structure. The self-centering clamping oil cylinder structure comprises a piston rod, a flange cover, a piston cylinder sleeve, and an oil cylinder support fixedly connected with a numerical control rotary table base; the flange cover is fixed at the upper end of the oil cylinder support; the piston cylinder sleeve is mounted in the oil cylinder support; the piston rod penetrates through the flange cover, and can be mounted in the piston cylinder sleeve in the manner of moving up and down; the structure further comprises an upper pressing plate and a lower pressing plate; the piston rod comprises an upper piston rod body and a lower piston rod body, and the upper piston rod body and the lower piston rod body are sleeved together through the cooperation of a hole and a shaft; a butterfly spring is mounted between the upper piston rod body and the lower piston rod body; the upper pressing plate is fixed on the upper piston rod body, while the lower pressing plate is fixed on the lower piston rod body; oil cavities of a sealed structure are arranged on the upper and lower sides of the butterfly spring; the oil cavities of the sealed structure are communicated with pipe joints. The self-centering clamping oil cylinder structure is capable of increasing and decreasing clamping force anytime by adjusting an oil pressure, and therefore, the working reliability and the production efficiency of a rotary table are obviously improved.
Description
Technical field
The present invention relates to a kind of self-centering centering clamping cylinder structure, belong to frame for movement technical field.
Background technology
Along with the high speed development of China's mechanical industry, the development of especially heavy industry, market gets more and more to the demand of the high accuracy processing auxiliary equipment such as large-scale four-shaft numerically controlled turntable.Large-scale four-shaft numerically controlled turntable is widely used in Five-canted Gantry Machining Center or numerical control floor boring-milling center.Five-canted Gantry Machining Center or numerical control floor boring-milling center are by increasing large-scale four-shaft numerically controlled turntable, can realize processing the multiaspect of big machinery part, usual clamped one time can complete whole or most manufacturing procedures of big machinery part, thus enhances productivity significantly.Meanwhile, owing to avoiding multiple clamping, eliminate the error that multiple clamping causes, be conducive to improving and ensureing machining accuracy.Therefore, large-scale four-shaft numerically controlled turntable, as the one in annex, uses very extensive in daily processing.
The large-scale four-shaft numerically controlled turntable used in daily processing, when needs interlock machining, turntable just must be in releasing orientation, when needs boring, bore hole or milling angle such as to face directly at the machining, turntable just must be in clamped condition, this just needs a kind of oil cylinder open in usual, unclamps at ordinary times, fixing use occasion clamping.
Summary of the invention
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, provides a kind of self-centering centering clamping cylinder structure that can be used for the large-scale rear clamping in four-shaft numerically controlled turntable calibration location.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of self-centering centering clamping cylinder structure, comprise piston rod, blind flange, piston-cylinder and the cylinder support for being fixedly connected with numerical control rotating platform base, blind flange is fixed on cylinder support upper end, piston-cylinder is arranged in cylinder support, piston rod is through blind flange, and piston rod can be arranged in piston-cylinder up or down, it also comprises top board and lower platen, described piston rod comprises upper piston rod and lower piston rod, upper piston rod and lower piston rod passing hole are together with the engagement sleeves of axle, between upper piston rod and lower piston rod, butterfly spring is installed, top board is fixed on upper piston rod, lower platen is fixed on lower piston rod, hermetically-sealed construction oil pocket is provided with in the both sides up and down of described butterfly spring, hermetically-sealed construction oil pocket is communicated with pipe joint.
Further provide a kind of concrete structure of hermetically-sealed construction oil pocket, between described piston rod and piston-cylinder, there is space, described upper piston rod arranged outside has dust ring and Yx sealing ring, described cylinder support and the inner side of piston-cylinder are provided with O-ring seals, and dust ring, Yx sealing ring, O-ring seals and above-mentioned space form hermetically-sealed construction oil pocket jointly.
Further provide the concrete structure of another kind of hermetically-sealed construction oil pocket, between described piston rod and piston-cylinder, there is space, described lower piston rod arranged outside has dust ring and Yx sealing ring, the inner side of described piston-cylinder is provided with O-ring seals, and dust ring, Yx sealing ring, O-ring seals and above-mentioned space form hermetically-sealed construction oil pocket jointly.
Further, described piston-cylinder and cylinder support all have passage.
After have employed technique scheme, when carrying out interlock machining, hermetically-sealed construction oil pocket of the present invention not fuel feeding, under the elastic force of butterfly spring promotes, upper piston rod and lower piston rod are in open configuration, and top board and lower platen are in releasing orientation; When carry out holing, bore hole etc. needs turntable to locate clamping, hermetically-sealed construction oil pocket fuel feeding, oil pressure overcomes the elastic force of butterfly spring, make upper piston rod and lower piston rod close, top board and lower platen are in self-centering centering clamped condition, are clamped by numerical control rotating platform rotating part; The present invention, by adjustment oil pressure, can increase and decrease clamping force at any time, thus significantly improve reliability and the production efficiency of turntable work; The present invention can complete the processing of the multiple plane of part when numerical control rotating platform once adjusts, thus ensures the positional precision in multiple milling plane and hole; Structure of the present invention is simple, compact, and rationally, adopt symmetric design, load is even.
Accompanying drawing explanation
Fig. 1 is the front sectional view of self-centering centering clamping cylinder structure of the present invention;
Fig. 2 is the schematic top plan view of self-centering centering clamping cylinder structure of the present invention;
In figure, 1, top board, 2, soket head cap screw, 3, holding screw, 4, blind flange, 5, pipe joint, 6, upper piston rod, 7, piston-cylinder, 8, butterfly spring, 9, cylinder support, 11, lower piston rod, 12, lower platen, 13, soket head cap screw, 14, holding screw, 15, soket head cap screw, 16, dust ring, 17, Yx sealing ring, 19, O-ring seals.
Detailed description of the invention
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation
As Fig. 1, shown in 2, a kind of self-centering centering clamping cylinder structure, comprise piston rod, blind flange 4, piston-cylinder 7 and the cylinder support 9 for being fixedly connected with numerical control rotating platform base, cylinder support 9 is fixed on numerical control rotating platform base by soket head cap screw, blind flange 4 is fixed on cylinder support 9 upper end by soket head cap screw 15, piston-cylinder 7 is arranged in cylinder support 9, piston rod is through blind flange 4, and piston rod can be arranged in piston-cylinder 7 up or down, the stroke of piston rod is by blind flange 4, the space that piston-cylinder 7 and cylinder support 9 surround upper, lower distance is determined, it also comprises top board 1 and lower platen 12, described piston rod comprises upper piston rod 6 and lower piston rod 11, upper piston rod 6 and lower piston rod 11 passing hole are together with the engagement sleeves of axle, butterfly spring 8 is installed between upper piston rod 6 and lower piston rod 11, top board 1 is fixed on upper piston rod 6 by soket head cap screw 2 and holding screw 3, lower platen 12 is fixed on lower piston rod 11 by soket head cap screw 13 and holding screw 14, hermetically-sealed construction oil pocket is provided with in the both sides up and down of butterfly spring 8, hermetically-sealed construction oil pocket is communicated with pipe joint 5.
As shown in Figure 1, between piston rod and piston-cylinder 7, there is space, upper piston rod 6 arranged outside has dust ring 16 and Yx sealing ring 17, the inner side of cylinder support 9 and piston-cylinder 7 is provided with O-ring seals 19, and dust ring 16, Yx sealing ring 17, O-ring seals 19 and above-mentioned space form hermetically-sealed construction oil pocket jointly.
As shown in Figure 1, between piston rod and piston-cylinder 7, there is space, lower piston rod 11 arranged outside has dust ring 16 and Yx sealing ring 17, the inner side of piston-cylinder 7 is provided with O-ring seals 19, and dust ring 16, Yx sealing ring 17, O-ring seals 19 and above-mentioned space form hermetically-sealed construction oil pocket jointly.
As shown in Figure 1, piston-cylinder 7 and cylinder support 9 all have passage, when disk spring 8 by compression time, the air in piston-cylinder 7 is discharged by passage.
Operation principle of the present invention is as follows:
When carrying out interlock machining, hermetically-sealed construction oil pocket of the present invention not fuel feeding, under the elastic force of butterfly spring 8 promotes, upper piston rod 6 and lower piston rod 11 are in open configuration, and top board 1 and lower platen 12 are in releasing orientation; When carry out holing, bore hole etc. needs turntable to locate clamping, hermetically-sealed construction oil pocket fuel feeding, oil pressure overcomes the elastic force of butterfly spring 8, makes upper piston rod 6 and lower piston rod 11 close, top board 1 and lower platen 12 are in self-centering centering clamped condition, are clamped by numerical control rotating platform rotating part.
The present invention, by adjustment oil pressure, can increase and decrease clamping force at any time, thus significantly improve reliability and the production efficiency of turntable work; The present invention can complete the processing of the multiple plane of part when numerical control rotating platform once adjusts, thus ensures the positional precision in multiple milling plane and hole; Structure of the present invention is simple, compact, and rationally, adopt symmetric design, load is even.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a self-centering centering clamping cylinder structure, comprise piston rod, blind flange (4), piston-cylinder (7) and the cylinder support (9) for being fixedly connected with numerical control rotating platform base, blind flange (4) is fixed on cylinder support (9) upper end, piston-cylinder (7) is arranged in cylinder support (9), piston rod is through blind flange (4), and piston rod can be arranged in piston-cylinder (7) up or down, it is characterized in that: it also comprises top board (1) and lower platen (12), described piston rod comprises upper piston rod (6) and lower piston rod (11), upper piston rod (6) and lower piston rod (11) passing hole are together with the engagement sleeves of axle, butterfly spring (8) is installed between upper piston rod (6) and lower piston rod (11), top board (1) is fixed on upper piston rod (6), lower platen (12) is fixed on lower piston rod (11), hermetically-sealed construction oil pocket is provided with in the both sides up and down of described butterfly spring (8), hermetically-sealed construction oil pocket is communicated with pipe joint (5).
2. self-centering centering clamping cylinder structure according to claim 1, it is characterized in that: between described piston rod and piston-cylinder (7), there is space, described upper piston rod (6) arranged outside has dust ring (16) and Yx sealing ring (17), described cylinder support (9) and the inner side of piston-cylinder (7) are provided with O-ring seals (19), and dust ring (16), Yx sealing ring (17), O-ring seals (19) and above-mentioned space form hermetically-sealed construction oil pocket jointly.
3. self-centering centering clamping cylinder structure according to claim 1 and 2, it is characterized in that: between described piston rod and piston-cylinder (7), there is space, described lower piston rod (11) arranged outside has dust ring (16) and Yx sealing ring (17), the inner side of described piston-cylinder (7) is provided with O-ring seals (19), and dust ring (16), Yx sealing ring (17), O-ring seals (19) and above-mentioned space form hermetically-sealed construction oil pocket jointly.
4. self-centering centering clamping cylinder structure according to claim 1 and 2, is characterized in that: described piston-cylinder (7) and cylinder support (9) all have passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810853.6A CN105234686A (en) | 2015-11-20 | 2015-11-20 | Self-centering clamping oil cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810853.6A CN105234686A (en) | 2015-11-20 | 2015-11-20 | Self-centering clamping oil cylinder structure |
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| Publication Number | Publication Date |
|---|---|
| CN105234686A true CN105234686A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510810853.6A Pending CN105234686A (en) | 2015-11-20 | 2015-11-20 | Self-centering clamping oil cylinder structure |
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| CN (1) | CN105234686A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2951456A1 (en) * | 1979-12-20 | 1981-07-02 | Anton 7326 Heinigen Koukal | Guideway for machine tool - has rotary cylindrical guide driven at speed that keeps sliding friction low |
| CN102152147A (en) * | 2011-04-26 | 2011-08-17 | 浙江联强数控机床股份有限公司 | Automatic centering hydraulic clamp mechanism |
| CN102371487A (en) * | 2011-09-15 | 2012-03-14 | 无锡桥联数控机床有限公司 | Rotary workbench gear ring hydraulic clamping device |
| CN202622346U (en) * | 2012-03-28 | 2012-12-26 | 四川长征机床集团有限公司 | Machine tool positioning and clamping structure |
| CN104097089A (en) * | 2014-05-19 | 2014-10-15 | 山东鲁南华源数控股份有限公司 | Rotary table hydraulic clamping device |
| CN205129400U (en) * | 2015-11-20 | 2016-04-06 | 常州机电职业技术学院 | From centering clamping cylinder structure |
-
2015
- 2015-11-20 CN CN201510810853.6A patent/CN105234686A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2951456A1 (en) * | 1979-12-20 | 1981-07-02 | Anton 7326 Heinigen Koukal | Guideway for machine tool - has rotary cylindrical guide driven at speed that keeps sliding friction low |
| CN102152147A (en) * | 2011-04-26 | 2011-08-17 | 浙江联强数控机床股份有限公司 | Automatic centering hydraulic clamp mechanism |
| CN102371487A (en) * | 2011-09-15 | 2012-03-14 | 无锡桥联数控机床有限公司 | Rotary workbench gear ring hydraulic clamping device |
| CN202622346U (en) * | 2012-03-28 | 2012-12-26 | 四川长征机床集团有限公司 | Machine tool positioning and clamping structure |
| CN104097089A (en) * | 2014-05-19 | 2014-10-15 | 山东鲁南华源数控股份有限公司 | Rotary table hydraulic clamping device |
| CN205129400U (en) * | 2015-11-20 | 2016-04-06 | 常州机电职业技术学院 | From centering clamping cylinder structure |
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Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |