CN102734253A - Double feed servo hydraulic cylinder - Google Patents
Double feed servo hydraulic cylinder Download PDFInfo
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- CN102734253A CN102734253A CN2012102382482A CN201210238248A CN102734253A CN 102734253 A CN102734253 A CN 102734253A CN 2012102382482 A CN2012102382482 A CN 2012102382482A CN 201210238248 A CN201210238248 A CN 201210238248A CN 102734253 A CN102734253 A CN 102734253A
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Abstract
The invention relates to a double feed servo hydraulic cylinder comprising a cylinder body, a first piston, a second piston, a first piston rod, a second piston rod, a bearing, a displacement sensor, a first cylinder cover and a second cylinder cover, wherein the cylinder body comprises a left chamber and a right chamber, the first piston is installed in the left chamber, the second piston is installed in the right chamber, the first piston rod is connected with the first piston through a bearing, the second piston rod is connected with the second piston through a bearing, the second piston rod is a hollow cylinder, the first piston rod and the second piston rod coaxially penetrate together and extend out of the cylinder body from the same direction, and one end of the first piston rod penetrates through the first cylinder cover and is matched with the displacement sensor. According to the double feed servo hydraulic cylinder disclosed by the invention, a structure that the first piston rod and the second piston rod coaxially extend out of the cylinder body from the same direction, and the pistons and the piston rods are connected through the bearings is adopted, so that the double feed servo hydraulic cylinder has the functions of double feeding, free rotation of the piston rods and position detection of the piston rods, and has the characteristics that raw materials are saved, manufacture cost is lowered, centralized control is facilitated and dynamic frequency response is rapid, and a mechanical structure is simplified.
Description
Affiliated technical field
The present invention relates to a kind of servo hydraulic cylinder, especially can realize two feed servo oil hydraulic cylinders that two feedings, piston rod can rotate freely through Numeric Control Technology.
Background technique
At present; Rotate in the servodrive hydraulic system of breathing mechanism in two feeding plover mill machines and two feedings; Dual-feed honing head rotates with main shaft same axial need reciprocating also need simultaneously under two kinds of feeding modes with rotation breathing mechanism, and the servo hydraulic cylinder that adopts usually can not often increase the rotation switching mechanism of straight reciprocating motion and rotation motion with main axis rotation because of piston rod between feed shaft and running shaft; The transmission position of servo-hydraulic cylinder piston rod need be joined sensor separately and detected and control; So, cause complex structure, transmission unreliable, under the nervous situation of locational space, also be difficult for realizing two feeding transmissions and control function.
Summary of the invention
Existing servo-hydraulic cylinder piston rod can not rotate and difficult two feedings and the central controlled deficiency of realizing in order to overcome, and the present invention provides a kind of pair of feed servo oil hydraulic cylinder.This pair feed servo oil hydraulic cylinder comprises cylinder body, first piston, second piston, the first piston bar that is connected with first piston, second piston rod that is connected with second piston, bearing, displacement transducer, sensor wrap, seal ring, back-up ring, first cylinder cap and second cylinder cap; Cylinder body comprises the partition wall between left chamber, right ventricle, left chamber and the right ventricle; It is indoor that first piston is installed on a left side; Second piston is installed in the right ventricle, and left chamber is provided with first oil inlet and outlet and second oil inlet and outlet, and the right ventricle is provided with the 3rd oil inlet and outlet and the 4th oil inlet and outlet; Above-mentioned first piston bar and first piston are to connect through bearing; Second piston rod and second piston connect through bearing, and second piston rod is a hollow cylinder, and the first piston bar is through with the coaxial heart of second piston rod and stretches out cylinder body in the same way; The first piston bar also comprises thin axial region, and the thin axial region of first piston bar passes first cylinder cap and connects mutually with displacement transducer.The structure that is through with the coaxial heart of second piston rod through the first piston bar makes the first piston bar and second piston rod both can produce fore and aft motion in same direction separately; Also can or produce fore and aft motion simultaneously in different active forces and speed priority; Realize two feed functions; Be to connect and second piston rod and second piston are through the bearing connecting structure equally through first piston bar and first piston simultaneously through bearing; The working order that has solved external load need be with the needs of realizing rotating freely, and the movement position of piston rod carries out the feedback control drive state after can directly being measured by displacement transducer.
The invention has the beneficial effects as follows: cylinder body has adopted integrated design; Make the first piston bar and the second piston rod concentric stretch out cylinder body in the same way; All adopted the bearing connection between first piston and first piston bar and second piston and second piston rod; Displacement transducer is used to test the mobile displacement of the thin axial region of first piston rod; Make the present invention possess two feed functions at the same time, piston rod rotates freely function and piston rod position measuring ability, has simplified mechanical structure, the characteristics of have saving material, reduce manufacture cost, be convenient to centralized control, the dynamic frequency response is fast.
Description of drawings
Fig. 1 is the cross section view of two feed servo oil hydraulic cylinders.
Fig. 2 is the cross section view of the cylinder body of two feed servo oil hydraulic cylinders.
Fig. 3 is the cross section view of the first piston of two feed servo oil hydraulic cylinders.
Fig. 4 is second piston and the sealing gland assembling generalized section of two feed servo oil hydraulic cylinders.
Among the figure:
Clutch shaft bearing 6, second bearing 7, displacement transducer 8, sensor wrap 9, seal ring 10,
Back-up ring 11, first cylinder cap 12, second cylinder cap 13, left chamber 14, right ventricle 15, partition wall 16,
First oil inlet and outlet 17, second oil inlet and outlet 18, the 3rd oil inlet and outlet 19, the 4th oil inlet and outlet 20,
First through hole 21, first annular groove 22, central through bore 23, bearing hole position 1,
Screw section 34, second through hole 35, the 3rd annular groove 36, circlip groove 37, internal thread part 38,
Stop part 39, Fourth Ring connected in star 301, thin axial region 41, shoulder portion 51.
Embodiment
In conjunction with accompanying drawing; The present invention is further specified; In conjunction with Fig. 1 and Fig. 2; Two feed servo oil hydraulic cylinders comprise cylinder body 1, first piston 2, second piston 3, the first piston bar 4 that is connected with first piston 2, second piston rod 5 that is connected with second piston 3, clutch shaft bearing 6, second bearing 7, displacement transducer 8, sensor wrap 9, seal ring 10, back-up ring 11, first cylinder cap 12 and second cylinder cap 13, and cylinder body 1 comprises the partition wall 16 between left chamber 14, right ventricle 15, left chamber 14 and the right ventricle 15; Chamber 14, a left side is provided with first oil inlet and outlet 17 and second oil inlet and outlet 18, and right ventricle 15 is provided with the 3rd oil inlet and outlet 19 and the 4th oil inlet and outlet 20; First piston bar 4 also comprises thin axial region 41, and the thin axial region 41 of first piston bar 4 passes first cylinder cap 12 and connects mutually with displacement transducer 8; Second piston rod 5 and second piston 3 connect through bearing 7, and second piston rod 5 is a hollow cylinder, and an end of second piston rod 5 and 3 assemblings of second piston is provided with shoulder portion 51; First piston bar 4 is through with second piston rod, 5 coaxial hearts and stretches out cylinder body 1 in the same way; Consult Fig. 2, in the middle of the partition wall 16 one first through hole 21 is set, these first through hole, 21 neutral positions are provided with one first annular groove 22; Above-mentioned first piston bar 4 connects through bearing 6 with first piston 2.
In conjunction with Fig. 1 and Fig. 3; First piston 2 is installed in the left chamber 14; First piston 2 two ends run through be provided with central through bore 23, with the bearing hole position 1 and the bearing hole position 2 25 of central through bore 23 concentrics, bearing hole position 1 is slightly darker than bearing hole position 2 25, bearing hole position 1 is used to install clutch shaft bearing 6 with bearing hole position 2 25; Central through bore 23 inwalls are provided with in second annular groove, 26, the second circular grooves 26 seal ring 10 are installed.
Consult Fig. 4, second piston 3 is installed in the right ventricle 15, comprises sealing gland 31 and piston body 32.Sealing gland 31 is a hollow circular cylinder, comprises main part 33 and screw section 34, and main part 33 neutral positions are provided with one second through hole 35, in the midway of this second through hole 35 one the 3rd annular groove 36 is set; Piston body 32 is a hollow circular cylinder; The inwall of piston body 32 is step-like, and the inwall of piston body 32 is provided with circlip groove 37, internal thread part 38 and stop part 39, and circlip groove 37 is used to assemble back-up ring 11; Internal thread part 38 is used for cooperating assembling with the screw section 34 of sealing gland 31; Stop part 39 is used for location assembling second bearing 7, and the outer wall of piston body 32 is provided with Fourth Ring connected in star 301, the Fourth Ring connected in stars 301 and is used to assemble seal ring 10.
The structure that is through with second piston rod, 5 coaxial hearts through first piston bar 4 makes the first piston bar 4 and second piston rod 5 both can produce fore and aft motion in same direction separately; Also can or produce fore and aft motion simultaneously in different active forces and speed priority; Realize two feed functions; Be to connect and second piston rod 5 passes through second bearing, 7 connecting structures with second piston 3 through first piston bar 4 and first piston 2 simultaneously through clutch shaft bearing 6; Make two piston rods all can realize with the operating condition of external load rotating freely; The moving displacement of first piston bar 4 feeds back to control system after can directly being measured by displacement transducer 8, and control system is moved to first piston bar 4 and controlled accurately.
Claims (5)
1. two feed servo oil hydraulic cylinder; It is characterized in that: two feed servo oil hydraulic cylinders comprise cylinder body (1), first piston (2), second piston (3), the first piston bar (4) that is connected with first piston (2), second piston rod (5) that is connected with second piston (3), clutch shaft bearing (6), second bearing (7), displacement transducer (8), sensor wrap (9), seal ring (10), back-up ring (11), first cylinder cap (12) and second cylinder cap (13), cylinder body (1) comprise partition wall (16) between left chamber (14), right ventricle (15), left chamber (14) and right ventricle (15); Chamber, a left side (14) is provided with first oil inlet and outlet (17) and second oil inlet and outlet (18), and right ventricle (15) are provided with the 3rd oil inlet and outlet (19) and the 4th oil inlet and outlet (20); First piston bar (4) also comprises thin axial region (41), and thin axial region (41) passes first cylinder cap (12) and connects mutually with displacement transducer (8); Second piston rod (5) connects through bearing (7) with second piston (3), and second piston rod (5) is a hollow cylinder, and second piston rod (5) is provided with shoulder portion (51) with an end of second piston (3) assembling; First piston bar (4) is through with the coaxial heart of second piston rod (5) and stretches out second cylinder cap (13) in the same way; In the middle of the partition wall (16) first through hole (21) is set, this first through hole (21) neutral position is provided with first annular groove (22); First piston bar (4) is to connect through bearing (6) with first piston (2); First piston (2) is installed in the left chamber (14); First piston (2) two ends run through be provided with central through bore (23), with the bearing accommodation chamber one (24) and the bearing accommodation chamber two (25) of central through bore (23) concentric; Bearing accommodation chamber one (24) and bearing accommodation chamber two (25) are used to accommodate clutch shaft bearing (6); Central through bore (23) inwall is provided with second annular groove (26), and seal ring (10) is installed in second circular groove (26); Second piston (3) is installed in the right ventricle (15); Comprise sealing gland (31) and piston body (32); Sealing gland (31) is a hollow circular cylinder; Comprise main part (33) and screw section (34), main part (33) neutral position is provided with second through hole (35), in the midway of this second through hole (35) the 3rd annular groove (36) is set; Piston body (32) is a hollow circular cylinder; The inwall of piston body (32) is step-like; The inwall of piston body (32) is provided with circlip groove (37), internal thread part (38) and stop part (39); Circlip groove (37) is used to assemble back-up ring (11), and internal thread part (38) is used for cooperating assembling with the screw section (34) of sealing gland (31), and stop part (39) is used for location assembling second bearing (7).
2. according to claim 1 pair of feed servo oil hydraulic cylinder is characterized in that: the left chamber (14) of cylinder body (1) is coaxial and distribute at same axis with right ventricle (15).
3. according to claim 1 pair of feed servo oil hydraulic cylinder is characterized in that: the outer wall of piston body (32) is provided with Fourth Ring connected in star (301), and Fourth Ring connected in star (301) is used to assemble seal ring (10).
4. according to claim 1 pair of feed servo oil hydraulic cylinder is characterized in that: first piston bar (4) and second piston rod (5) all can rotate freely according to the external load situation separately.
5. according to claim 1 pair of feed servo oil hydraulic cylinder is characterized in that: the movement position of first piston bar (4) is directly measured by displacement transducer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102382482A CN102734253A (en) | 2012-07-11 | 2012-07-11 | Double feed servo hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102382482A CN102734253A (en) | 2012-07-11 | 2012-07-11 | Double feed servo hydraulic cylinder |
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| CN102734253A true CN102734253A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102382482A Pending CN102734253A (en) | 2012-07-11 | 2012-07-11 | Double feed servo hydraulic cylinder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033443A (en) * | 2014-05-20 | 2014-09-10 | 苏州好特斯模具有限公司 | Split type double-layer air cylinder |
| CN104895866A (en) * | 2015-06-18 | 2015-09-09 | 合肥合锻机床股份有限公司 | Equal-speed equal-stroke high frequency response double-acting cylinder |
| CN105197832A (en) * | 2014-06-23 | 2015-12-30 | 空中客车运营简化股份公司 | Systeme De Suivi A La Manutention D'un Moteur D'aeronef |
| CN110594238A (en) * | 2019-10-22 | 2019-12-20 | 徐州重型机械有限公司 | Hydraulic cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294547A1 (en) * | 1987-06-06 | 1988-12-14 | SMW Schneider & Weisshaupt GmbH | Revolving clamping cylinder for power chucks |
| CN200964976Y (en) * | 2006-11-06 | 2007-10-24 | 漳州维德焊接技术开发有限公司 | Slow speed rotation oil cylinder |
| CN201166002Y (en) * | 2008-01-08 | 2008-12-17 | 张成波 | External conveying pump bearing end cap seal device |
| CN201368132Y (en) * | 2009-02-26 | 2009-12-23 | 湖南金三星煤机制造有限公司 | Sealing end cover |
| CN201434018Y (en) * | 2009-07-22 | 2010-03-31 | 瓮福（集团）有限责任公司 | Sealing cover of dust-proof bearing seat |
| CN102207114A (en) * | 2011-06-03 | 2011-10-05 | 武汉科技大学 | Two-stage servo hydraulic cylinder |
-
2012
- 2012-07-11 CN CN2012102382482A patent/CN102734253A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294547A1 (en) * | 1987-06-06 | 1988-12-14 | SMW Schneider & Weisshaupt GmbH | Revolving clamping cylinder for power chucks |
| CN200964976Y (en) * | 2006-11-06 | 2007-10-24 | 漳州维德焊接技术开发有限公司 | Slow speed rotation oil cylinder |
| CN201166002Y (en) * | 2008-01-08 | 2008-12-17 | 张成波 | External conveying pump bearing end cap seal device |
| CN201368132Y (en) * | 2009-02-26 | 2009-12-23 | 湖南金三星煤机制造有限公司 | Sealing end cover |
| CN201434018Y (en) * | 2009-07-22 | 2010-03-31 | 瓮福（集团）有限责任公司 | Sealing cover of dust-proof bearing seat |
| CN102207114A (en) * | 2011-06-03 | 2011-10-05 | 武汉科技大学 | Two-stage servo hydraulic cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033443A (en) * | 2014-05-20 | 2014-09-10 | 苏州好特斯模具有限公司 | Split type double-layer air cylinder |
| CN105197832A (en) * | 2014-06-23 | 2015-12-30 | 空中客车运营简化股份公司 | Systeme De Suivi A La Manutention D'un Moteur D'aeronef |
| CN104895866A (en) * | 2015-06-18 | 2015-09-09 | 合肥合锻机床股份有限公司 | Equal-speed equal-stroke high frequency response double-acting cylinder |
| CN110594238A (en) * | 2019-10-22 | 2019-12-20 | 徐州重型机械有限公司 | Hydraulic cylinder |
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Application publication date: 20121017 |