CN2675329Y - rotary positioning clamping cylinder - Google Patents
rotary positioning clamping cylinder Download PDFInfo
- Publication number
- CN2675329Y CN2675329Y CN 200320116242 CN200320116242U CN2675329Y CN 2675329 Y CN2675329 Y CN 2675329Y CN 200320116242 CN200320116242 CN 200320116242 CN 200320116242 U CN200320116242 U CN 200320116242U CN 2675329 Y CN2675329 Y CN 2675329Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cylinder
- section
- pressure head
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
The utility model relates to a rotary positioning clamping cylinder, including cylinder body, piston rod, piston, cylinder cap, pressure head, its characterized in that: the piston rod is provided with a spiral groove; the piston rod is connected with the pressure head through a pin and is connected with the piston through a ball; the pressure head is provided with a concave conical surface which is matched and positioned with the ball head surface of the positioning rod on the cylinder body. The rotary positioning clamping cylinder has the advantages that the size is reduced, the reliable flexibility of guiding operation and the accuracy of a clamping position are ensured, the piston rod of the cylinder is prevented from being subjected to torque during working, and the problem that the clamping force is influenced due to the deformation of the piston rod when the cylinder is used for a long time is solved.
Description
Technical field: the utility model relates to a kind of revolution clamping cylinder that is used for anchor clamps.
Background technology: in general, when workpiece clamps, because the anchor clamps space is smaller, and we wish that workpiece loading and unloading is convenient, so just requiring to clamp pressure head itself not only will clamp function and can also turn round and get out of the way workpiece, make workpiece be convenient to loading and unloading, must design the complicated mechanism of a cover, use also inconvenient in order to realize this function.As inconsiderate, make the piston rod of standard cylinder be subjected to moment of torsion, influence the service life of cylinder.Clamp for small bore in addition, because the anchor clamps fit clearance exists, make that the clamping point position is inconsistent each time, clamping force will be affected, and influences the workpiece size precision in part processing, even waste product occurred.In existing anchor clamps standard, cylinder and swing part all are independently, and the cylinder that has is made of one piston rod and pressure head, in clamping process, make piston be subjected to moment of torsion, excessive as moment of torsion, make the piston rod distortion, piston rod is moved back and forth catching phenomenon takes place, make piston rod movement dumb.
Technology contents: thus the utility model is subjected to the problem that moment of torsion causes being out of shape influences clamping force in order to solve cylinder piston rod, a kind of revolution location clamping cylinder is proposed, include cylinder body, piston rod, piston, cylinder cap, pressure head, it is characterized in that: on the described piston rod helicla flute is arranged; Described piston rod connects with described pressure head by pin, is connected with described piston by ball; The spherical surface of the backstay on described pressure head is provided with recessed taper seat and the is positioned at described cylinder body location of matching.
This revolution positional cylinder pressure head part is connected with the pin of piston rod makes cylinder piston rod only be subjected to axial force, and is not subjected to load torque, thereby having overcome piston rod is subjected to the problem that torsional deformation influences clamping force; When meanwhile swing clamped, the conical grooves on the pressure head combined with the spherical surface of backstay, guaranteed the accurate of clamped position; And it is reliable flexible to lead, and has reduced the size of anchor clamps simultaneously.
Description of drawings: Fig. 1 is the structural representation of the utility model revolution positional cylinder;
Fig. 2 is the structural representation of the utility model revolution positional cylinder piston rod.
The specific embodiment: as shown in Figure 1, this revolution location clamping cylinder includes cylinder body 1, piston rod 2, piston 6, cylinder cap 9, pressure head 15, backstay 12, and the rotating helicla flute 8 that wherein leads is directly processed on piston rod 2, is positioned at and the piston contact jaw; In order to prevent that piston 6 from rotating along with the revolution of piston rod 2, isolate with ball 4 in the part that piston 6 is connected with piston rod 2, prevent that piston 6 is subjected to moment of torsion, make the sealing ring 5 on the piston 6 have only axially-movable and not rotation, improve the working condition of sealing ring 5, prolonged the life-span.Piston rod 2 connects pressure head 15 by joint 13, and joint 13 is linked up by pin 14 with pressure head 15, and fastening by split pin 16, and this structure makes 2 in piston rod be subjected to axial force, and is not subjected to load torque, has improved the working condition of piston rod 2.When pressure head 15 work clamps be positioned at cylinder body 1 on backstay 12 tops contact, for guaranteeing the accurate of clamping and positioning, the contact-making surface of pressure head 15 is recessed taper seat, the top end face of backstay 12 is a spherical surface, the adjustable height of backstay 12 spherical surfaces wherein, match with the spherical surface 7 of backstay 12 with the recessed taper seat 11 on the pressure head 15 and to position, can limit five frees degree of pressure head 15, thereby guarantee the accurate of clamped position, there has been this spacing simultaneously, when being subjected to cutting force and moment of torsion, can not cause that the string of pressure head 15 is moving owing to the gap of spirally-guided part yet.As shown in Figure 2, directly process helicla flute 8 and form by three sections on piston rod 2, first section 17 and the 3rd section 19 is straight troughs, and second section 18 is helicla flutes; First section 17 is non-workpiece sections, and the 3rd section 19 is hold-down segment active sections just, and second section 18 is spiral sections, and this section is that the rotation section also is the section of making a concession.The impulse stroke length of whole cylinder is that the length of helicla flute 8 on piston rod 2 is determined.
Pressure head part 15 is connected by pin 14 with piston rod 2, like this when pressure head 14 is subjected to moment of torsion, piston rod 2 still only is subjected to axial force, has solved moment of torsion and has crossed ambassador's piston rod distortion and cause piston rod to move back and forth catching phenomenon takes place, thereby made the dumb problem that influences clamping force of piston rod movement.
The course of work of this revolution positional cylinder is as follows: when the logical oil of rod chamber, oil pressure promotes piston 6 motions, promote piston rod 2 motions again by ball 4 in piston 6 motions, the track of piston rod 2 motions is to be realized by the helicla flute on the piston rod 28, first section 17 straight trough is the inoperative section, the rotation section that to enter second section 18 spiral section be piston rod 2, pressure head 15 rotations, but piston 6 does not rotate, the conveniently assemble and disassemble workpiece, the 3rd section 19 is active sections, and workpiece pressing section just is when workpiece pressing, utilize the conical surface 11 on the pressure head 15 to match with the bulb 7 of backstay 12, guarantee the accurate of compacted position, wherein the height of backstay 12 is adjustable as required
After workpiece machines, the rodless cavity oil-feed of cylinder, piston 6 returns, promote piston rod 2 motions again by ball 4 in piston 6 motions, piston rod 2 is returned, the concrete course of work is, piston rod 2 returns, and at first is the 3rd section 19, and piston rod 2 is return, enter second section 18 again, piston rod 2 rotation, but piston 6 do not rotate, like this, pressure head 15 changes the inoperative section over to, and whole working cycles is finished.
What this clamping and positioning oil cylinder was given is a kind of basic model, and deformable goes out many forms according to connecting mode, and the form of this respect is identical with the form of distortion of cylinder.
Claims (2)
1, clamping cylinder is located in a kind of revolution, includes cylinder body, piston rod, piston, cylinder cap, pressure head, it is characterized in that: on the described piston rod helicla flute is arranged; Described piston rod connects with described pressure head by pin, is connected with described piston by ball; The spherical surface of the backstay on described pressure head is provided with recessed taper seat and the is positioned at described cylinder body location of matching.
2, clamping cylinder is located in revolution as claimed in claim 1, and it is characterized in that: the helicla flute on the described piston rod is formed by three sections, and first section is straight trough with the 3rd section, and second section is helicla flute; First section is non-workpiece section, and the 3rd section is hold-down segment, and second section is spiral section that is yielding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116242 CN2675329Y (en) | 2003-12-05 | 2003-12-05 | rotary positioning clamping cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116242 CN2675329Y (en) | 2003-12-05 | 2003-12-05 | rotary positioning clamping cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675329Y true CN2675329Y (en) | 2005-02-02 |
Family
ID=34475361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320116242 Expired - Lifetime CN2675329Y (en) | 2003-12-05 | 2003-12-05 | rotary positioning clamping cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675329Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979211A (en) * | 2010-11-09 | 2011-02-23 | 徐州华恒焊接有限公司 | Sliding hydraulic clamping reversible deformation mechanism and welding device |
| CN101698280B (en) * | 2009-11-12 | 2012-02-01 | 孝感三联试验机有限公司 | Composite oil cylinder clamping device |
| CN102672479A (en) * | 2012-04-25 | 2012-09-19 | 常州协润精机有限公司 | Automatic centering fixture for cylindrical part |
| CN103671340A (en) * | 2013-09-05 | 2014-03-26 | 常熟市董浜镇徐市盛峰液压配件厂 | Hydraulic cylinder |
-
2003
- 2003-12-05 CN CN 200320116242 patent/CN2675329Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698280B (en) * | 2009-11-12 | 2012-02-01 | 孝感三联试验机有限公司 | Composite oil cylinder clamping device |
| CN101979211A (en) * | 2010-11-09 | 2011-02-23 | 徐州华恒焊接有限公司 | Sliding hydraulic clamping reversible deformation mechanism and welding device |
| CN102672479A (en) * | 2012-04-25 | 2012-09-19 | 常州协润精机有限公司 | Automatic centering fixture for cylindrical part |
| CN102672479B (en) * | 2012-04-25 | 2015-05-27 | 常州协润精机有限公司 | Automatic centering fixture for cylindrical part |
| CN103671340A (en) * | 2013-09-05 | 2014-03-26 | 常熟市董浜镇徐市盛峰液压配件厂 | Hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131205 Granted publication date: 20050202 |