CN203272340U - High-precision inspection device for air-suspending friction-free air cylinder - Google Patents
High-precision inspection device for air-suspending friction-free air cylinder Download PDFInfo
- Publication number
- CN203272340U CN203272340U CN 201320180514 CN201320180514U CN203272340U CN 203272340 U CN203272340 U CN 203272340U CN 201320180514 CN201320180514 CN 201320180514 CN 201320180514 U CN201320180514 U CN 201320180514U CN 203272340 U CN203272340 U CN 203272340U
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- Prior art keywords
- air
- cushion
- friction
- friction cylinder
- cushion block
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- 238000007689 inspection Methods 0.000 title abstract 3
- 239000000725 suspension Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000007667 floating Methods 0.000 claims description 42
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 abstract 1
- 238000011088 calibration curve Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008041 oiling agent Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
A high-precision inspection device for an air-suspending friction-free air cylinder comprises a rack, a cushion block, an air-suspension cushion and a non-contact angle encoder. The non-contact angle encoder comprises a code disc, a reading head and a reading head seat, wherein the reading head is mounted on the reading head seat, and the reading head points to the indicating scale of the code disc. The rodless cavity side of an air-suspending friction-free air cylinder to be inspected is vertically fixed on the rack, the cushion block is fixed at the tail end of a friction-free air cylinder piston rod, the code disc of the angle induction assembly is mounted on the upper surface of the cushion block, the air-suspension cushion is mounted on a lifting mechanism and is concentric with the cushion block, the air-suspension cushion is located on the code disc and is connected with the code disc in an air-suspension mode, the lifting mechanism is mounted on the rack, an air-suspension cushion air supply opening is formed in the lifting mechanism, and an air inlet of the friction-free air cylinder is formed in a support. The high-precision inspection device for the air-suspending friction-free air cylinder can measure whether frictional force exits between an air-suspending friction-free air cylinder inner piston and a cylinder barrel and is high in precision.
Description
Technical field
The utility model relates to frictional force and checks the field, and especially a kind of gas suspension is without friction Pneumatic Cylinder with Friction verifying attachment.
Background technique
Along with modern industry and high-tech develop rapidly, the gas bearing technology is used widely, and it is to replace oil as oiling agent with gas, consists of air film between axle and bearing housing, makes active face and stationary face avoid the desirable supporting element that directly contacts.The gas lubrication technology also is applied on realization zero friction cylinder, leave minimum gap between cylinder barrel and piston, and the throttle orifice of even distribution is set on piston radial, pressurized air in employing cylinder self cavity volume is as oiling agent, gas is introduced in the gap, make piston be in complete state of suspension in cylinder, piston does not contact each other with cylinder barrel, thereby has eliminated the frictional force between piston and cylinder barrel in the air cylinder structure.
Gas suspension has very high requirement on machining accuracy without the friction cylinder, will carry out the check of frictional force to manufactured gas suspension without the friction cylinder.Can if do not exist in frictional force between air-bearing shafts and air supporting cover, only be subjected to resistance of air along axial-rotation air-bearing shafts or air supporting cover for common pneumatic bearing, air-bearing shafts or the air supporting cover of rotation can stop slowly.But without the friction cylinder, piston all needs to carry out the check of frictional force when being in the interior any position of cylinder barrel, satisfies the frictionless requirement for gas suspension.After the cylinder ventilation, move axially because piston is stressed, need apply a power at the piston rod axial direction and come the equalizing piston position, if adopt counterweight to be fixed on the end of piston rod, the rotary-piston bar carries out the frictional force check, inertia force influence when rotating because of counterweight is far longer than resistance of air and frictional force, can not satisfy testing requirement, and does not have effective method to come the position of control piston in cylinder barrel.
Summary of the invention
Can't to realize gas suspension in prior art without the problem of friction Pneumatic Cylinder with Friction check in order overcoming, to the invention provides a kind of gas suspension of can effectively measuring without the verifying attachment of the high-precision gas suspension that whether has frictional force between friction piston and cylinder barrel without the friction cylinder.
The technological scheme that its technical problem that solves the utility model adopts is:
a kind of high-precision gas suspension is without the verifying attachment of friction cylinder, comprise frame, cushion block, floating cushion and Non-contact angle encoder, described Non-contact angle encoder comprises code-disc, read head and reading headstock, described read head is arranged on the reading headstock, described read head points to the indicating graduation of described code-disc, described gas suspension to be tested vertically is fixed on frame without the rodless cavity side of friction cylinder, described cushion block is fixed on the end without the friction cylinder piston rod, the code-disc of described angle inductive component is arranged on the cushion block upper surface, described floating cushion is arranged on elevator mechanism and is concentric with described cushion block, described floating cushion is positioned on described code-disc and air floating type connection between the two, described elevator mechanism is arranged on frame, described elevator mechanism is provided with the floating cushion air supply opening, described support is provided with the inlet hole without the friction cylinder.
further, described frame comprises base and two supports, described elevator mechanism comprises moving beam, ball screw, the feed screw nut seat, linear rail and straight line guide rail seat, described two supports vertically are fixed on base, described ball screw two ends are fixed therein on a support by bearing support, described linear rail is arranged on another support by fixed base, described moving beam one end is connected with the ball-screw nut seat, described feed screw nut cover for seat is contained on described ball screw, the other end of described mobile moving beam is connected with described straight line guide rail seat, described straight line guide rail seat is sleeved on described linear rail, motor is connected with ball screw by coupling, described floating cushion and reading headstock are arranged on described moving beam, have the floating cushion air supply opening on described moving beam, have the inlet hole without the friction cylinder on described base.Certainly, also can select other elevator mechanism to realize.
Further, described floating cushion is the circle floating cushion, also can adopt the floating cushion of other types.
Technical conceive of the present utility model is: between the cushion block of floating cushion and piston-rod end by gas lubrication, there is not frictional force during relative movement, the cushion block of cylinder ventilation back piston bar end is under the effect of floating cushion, can reach the state of suspension in cylinder barrel, and floating cushion is fixed on the air supporting base can adjust the position on adjusting pole, checks gas suspension whether to have frictional force without the friction cylinder by the rotating piston bar.
The air feed of floating cushion and Non-contact angle encoder and wiring do not affect the motion of piston.Speed time curve when can accurately obtain piston rotation by the Non-contact angle encoder, by checking gas suspension whether to have frictional force without the friction cylinder with the contrast of calibration curve, testing accuracy is high.
The beneficial effects of the utility model are mainly manifested in: effectively measure gas suspension without whether existing frictional force, testing accuracy high between friction piston and cylinder barrel.
Description of drawings
Fig. 1 is that high-precision gas suspension is without the verifying attachment of friction cylinder.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
with reference to Fig. 1, a kind of high-precision gas suspension is without the verifying attachment of friction cylinder, comprise frame, cushion block 8, floating cushion 18 and Non-contact angle encoder, described Non-contact angle encoder comprises code-disc 9, read head and reading headstock 10, described read head is arranged on reading headstock 10, described read head points to the indicating graduation of described code-disc 9, described gas suspension to be tested vertically is fixed on frame without the rodless cavity side of friction cylinder, described cushion block 8 is fixed on the end without the friction cylinder piston rod, the code-disc of described angle inductive component is arranged on cushion block 8 upper surfaces, described floating cushion 18 is arranged on elevator mechanism and is concentric with described cushion block 8, described floating cushion 18 is positioned on described code-disc 9 and air floating type connection between the two, described elevator mechanism is arranged on frame, described elevator mechanism is provided with floating cushion air supply opening 17, described support is provided with the inlet hole 4 without the friction cylinder.
Further, described frame comprises base 1 and two supports 13, and described elevator mechanism comprises moving beam 19, ball screw 12, feed screw nut seat 11, linear rail 15 and straight line guide rail seat 16.Certainly, also can adopt other elevator mechanisms.
The high-precision gas suspension of the present embodiment is without the verifying attachment of friction cylinder, comprise cushion block 8, floating cushion 18, moving beam 19, Non-contact angle encoder, ball screw 12, linear rail 15, motor 2, coupling 3, base 1, described Non-contact angle encoder comprises code-disc 9, read head and reading headstock 10.Described gas suspension to be tested vertically is fixed on base 1 without the friction cylinder, described cushion block 8 is fixed on the end without friction cylinder piston rod 7, described floating cushion 18 is arranged on the center of moving beam 19, the center superposition of described cushion block 8 and floating cushion 18, the code-disc 9 of described angle inductive component is arranged on the upper surface of cushion block 8, described reading headstock 10 is fixed on moving beam 19, described read head is arranged on the reading headstock, have or not the inlet hole 4 of the cylinder that rubs on described base, floating cushion air supply opening 17 is arranged on described moving beam.
Preferably, described support 13 has two and vertically be fixed on base 1, described ball screw 12 two ends are fixed on support 13 by bearing support 14, described linear rail 15 is arranged on another support by fixed base 20, described moving beam 19 two ends are fixing with ball screw 12 and linear rail 15 by ball-screw nut seat 11 and straight line guide rail seat 16 respectively, and described motor 2 is connected with ball screw 12 by coupling 3.
Give respectively floating cushion 18 and gas suspension without friction cylinder air feed, control by ball screw 12 position that floating cushion 18 moves up and down, cushion block 8 moves vertically with cylinder piston, effect at floating cushion 18 is issued to stable state, there are minimum gap in 8 of floating cushion and cushion blocks, form air film in the gap, have the effect of power between floating cushion and cushion block but do not have frictional force.rotating piston bar 7 is given an one initial velocity, if do not have frictional force between piston 6 and cylinder barrel 5, only be subject to resistance of air, piston 6 can stop very slowly, the data that the Non-contact angle encoder is measured send external computer system to, the curve of velocity attenuation when rotating by calculating piston, come the position of control piston 6 in cylinder barrel 5 force measurements that further rubs by the position of adjusting floating cushion 18 again, if have frictional force between piston 6 and cylinder barrel 5, under identical starting velocity, quick attenuation phenomenon can appear in velocity curve, surpass margin of error with the calibration curve contrast, computer system meeting automatic alarm, described gas suspension is undesirable without the friction cylinder.
Described floating cushion 18 is the circle floating cushion, certainly, also can adopt the floating cushion of other types.
In the present embodiment, the air feed of floating cushion 18 and Non-contact angle encoder and wiring do not affect the motion of piston.Speed time curve when can accurately obtain piston rotation by the Non-contact angle encoder, by checking gas suspension whether to have frictional force without the friction cylinder with the contrast of calibration curve, testing accuracy is high.
Claims (3)
1. a high-precision gas suspension is without the verifying attachment of friction cylinder, it is characterized in that: comprise frame, cushion block, floating cushion and Non-contact angle encoder, described Non-contact angle encoder comprises code-disc, read head and reading headstock, described read head is arranged on the reading headstock, described read head points to the indicating graduation of described code-disc, gas suspension to be tested vertically is fixed on frame without the rodless cavity side of friction cylinder, described cushion block is fixed on the end without the friction cylinder piston rod, the code-disc of described angle inductive component is arranged on the cushion block upper surface, described floating cushion is arranged on elevator mechanism and is concentric with described cushion block, described floating cushion is positioned on described code-disc and air floating type connection between the two, described elevator mechanism is arranged on frame, described elevator mechanism is provided with the floating cushion air supply opening, described frame is provided with the inlet hole without the friction cylinder.
2. high-precision gas suspension as claimed in claim 1 is without the verifying attachment of friction cylinder, it is characterized in that: described frame comprises base and two supports, described elevator mechanism comprises moving beam, ball screw, the feed screw nut seat, linear rail and straight line guide rail seat, described two supports vertically are fixed on base, described ball screw two ends are fixed therein on a support by bearing support, described linear rail is arranged on another support by fixed base, described moving beam one end is connected with the ball-screw nut seat, described feed screw nut cover for seat is contained on described ball screw, the other end of described moving beam is connected with described straight line guide rail seat, described straight line guide rail seat is sleeved on described linear rail, motor is connected with ball screw by coupling, described floating cushion and reading headstock are arranged on described moving beam, have the floating cushion air supply opening on described moving beam, have the inlet hole without the friction cylinder on described base.
3. high-precision gas suspension as claimed in claim 1 or 2 without the verifying attachment of friction cylinder, is characterized in that: described floating cushion is the circle floating cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180514 CN203272340U (en) | 2013-04-10 | 2013-04-10 | High-precision inspection device for air-suspending friction-free air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180514 CN203272340U (en) | 2013-04-10 | 2013-04-10 | High-precision inspection device for air-suspending friction-free air cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272340U true CN203272340U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180514 Expired - Fee Related CN203272340U (en) | 2013-04-10 | 2013-04-10 | High-precision inspection device for air-suspending friction-free air cylinder |
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| CN (1) | CN203272340U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234899A (en) * | 2013-04-10 | 2013-08-07 | 浙江工业大学 | A detection device for a high-precision air-levitated friction-free cylinder |
| CN105952715A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | Testing device for friction force of hydraulic cylinder |
| CN106050807A (en) * | 2016-06-30 | 2016-10-26 | 蚌埠液力机械有限公司 | Test bed of miniature lifting hydraulic cylinder |
-
2013
- 2013-04-10 CN CN 201320180514 patent/CN203272340U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234899A (en) * | 2013-04-10 | 2013-08-07 | 浙江工业大学 | A detection device for a high-precision air-levitated friction-free cylinder |
| CN106050807A (en) * | 2016-06-30 | 2016-10-26 | 蚌埠液力机械有限公司 | Test bed of miniature lifting hydraulic cylinder |
| CN106050807B (en) * | 2016-06-30 | 2018-08-28 | 蚌埠液力机械有限公司 | Small-sized lifting hydraulic cylinder test-bed |
| CN105952715A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | Testing device for friction force of hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160410 |