CN104931176A - Piezoelectric type three jaw chuck clamping force measurement device - Google Patents
Piezoelectric type three jaw chuck clamping force measurement device Download PDFInfo
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- CN104931176A CN104931176A CN201510182244.0A CN201510182244A CN104931176A CN 104931176 A CN104931176 A CN 104931176A CN 201510182244 A CN201510182244 A CN 201510182244A CN 104931176 A CN104931176 A CN 104931176A
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- clamping force
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- locating slot
- locating sleeve
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Abstract
A piezoelectric type three jaw chuck clamping force measurement device belongs to the sensor and sensor measurement and control field, and comprises jaws, piezoelectric sensors, positioning sleeves, sealing rings and fastening bolts. By being used as the force sensing elements, the piezoelectric sensors are arranged on the jaws directly, are sealed by the positioning sleeves and the sealing rings, and are positioned and clamped by the fastening bolts. The measurement device of the present invention has the characteristics of high rigidity and precision, is convenient to use and package, realizes the real-time monitoring of the thin-wall cylindrical workpiece clamping forces during a mechanical processing process, and is practical for the processing quality.
Description
Technical field
The invention belongs to sensor and measurement and control area thereof, take piezoelectric transducer as core force sensing element, make piezoelectric type scroll chuck clamping force measurement mechanism, realize the clamping force of thin_wall cylinder part in use scroll chuck clamping process to monitor in real time, effectively avoid the thin_wall cylinder part distortion caused because clamping force is excessive, for the crudy improving thin-walled cylindrical workpiece provides a kind of measurement mechanism of practicality.
Background technology
In traditional clamping force field tests, be mainly divided into two kinds: based on the strain-type clamping force measurement mechanism of foil gauge and the clamping force measurement mechanism based on distortion.
Strain-type clamping force measurement mechanism based on foil gauge: strain gauge transducer is making as the physical property such as resistance are changed to basis of utilizing material to occur in distortion, have the advantages such as quality is light, response is fast, small volume, the various kinds of sensors based on foil gauge is widely used.But strain gauge transducer is generally directly attached on workpiece, and rigidity is lower, poor reliability.Foil gauge is directly exposed in test environment, and easily by the impact of the foreign matters such as chip, sealing difference causes precision easily to decline, and is not suitable for macrocyclic test environment.
Clamping force measurement mechanism based on distortion: in elastic range, what the size of clamping force and power caused is deformed into direct ratio.Radial geometry deformation amount respectively during measuring workpieces clamping, analyzes the mapping relations between clamping force and deflection, utilizes Deformation calculation to go out clamping force.But the measuring accuracy of deflection is low, the measuring accuracy of clamping force is poor.
Above two kinds of device sealings are poor, and easy tested person such environmental effects, reduces measuring accuracy, limits the range of application in clamping force field of high-precision measurement.Piezoelectric sensor, because of the advantage of its high rigidity, high natural frequency, high sensitivity, high stability, obtains researchist and extensively payes attention to.Therefore develop with piezoelectric sensor be core possess high leakproofness, key that the measurement structure of high reliability is clamping force high-acruracy survey.
Summary of the invention
The technical barrier that the present invention will solve changes in the test of traditional scroll chuck clamping force, a difficult problem for the measurement of sealing difference, and invent the piezoelectric type clamping force measurement mechanism of a kind of high leakproofness, high reliability.
The technical solution adopted in the present invention is:
A kind of piezoelectric type scroll chuck clamping force measurement mechanism, comprises three-jaw chuck pawl, piezoelectric sensor, locating sleeve, O-ring seal, fastening bolt and pigtail splice; The face of three-jaw chuck pawl is plane, face has lower locating slot and the fastening bolt pilot hole of piezoelectric sensor; Locating sleeve there are bolt positioning hole, pigtail splice mounting hole and upper locating slot; Piezoelectric sensor is arranged on the lower locating slot of three-jaw chuck pawl; Pigtail splice is screwed in wire terminal mounting hole; O-ring seal is arranged in the O-ring seal pilot hole of locating sleeve, and locating sleeve, O-ring seal are placed in claw plane together, ensures that the electrode wires of piezoelectric sensor is drawn from the pigtail splice of locating sleeve; Fastening bolt is screwed in the bolt positioning hole of claw along the axis of locating sleeve, completes clamping and the sealing of piezoelectric sensor.
Described piezoelectric sensor should with upper locating slot surface of contact, lower locating slot surface of contact compact siro spinning technology, ensure clamping force test accuracy.
A kind of piezoelectric type scroll chuck clamping force measurement mechanism of the present invention, the induced charge produced under power effect by piezoelectric sensor, measures the normal direction clamping force of scroll chuck; Locating sleeve is utilized to achieve location to piezoelectric sensor; Utilize O-ring seal to prevent the foreign matter such as iron filings, cutting fluid from damaging piezoelectric sensor, there is good sealing.This dynamometer structure is simple, good manufacturability, stablize, be convenient to encapsulation, meets the demand of scroll chuck clamping force measurement in engineering.
Accompanying drawing explanation
Fig. 1 is piezoelectric type scroll chuck clamping force measurement mechanism arrangenent diagram.
Fig. 2 is the structural drawing of piezoelectric type scroll chuck clamping force measurement mechanism.
Fig. 3 is three-jaw chuck pawl structural drawing.
Fig. 4 is locating sleeve structure figure.
Fig. 5 is that sectional view arranged by piezoelectric type scroll chuck clamping force measurement mechanism.
Fig. 6 is the sectional view of piezoelectric type scroll chuck clamping force measurement mechanism.
In figure: 1 three-jaw chuck pawl, 2 piezoelectric sensors, 3 locating sleeves, 4 O-ring seals, 5 fastening bolts, 6 pigtail splices, 7 times locating slots, 8 bolt positioning holes, 9 O-ring seal pilot holes, 10 sensor electrical polar curves, 11 bolt mounting holes, 12 pigtail splice mounting holes, locating slot on 13;
A claw contact plane, locating slot surface of contact under b;
C locating sleeve clamping face, the upper locating slot surface of contact of d.
Embodiment
Combination technology scheme and accompanying drawing describe enforcement of the present invention in detail.As shown in Figures 2 and 3, the surface of contact a milling of claw 1 is become plane; In plane a, process the lower locating slot 7 of piezoelectric sensor 2, the lower locating slot surface of contact b of fine grinding, ensures the positioning precision of piezoelectric sensor 2.The bolt positioning hole 8 of fastening bolt 5 is become in the center tapping of plane a.O-ring seal pilot hole 9, processing bolt mounting hole 11 and pigtail splice mounting hole 12 is processed respectively at locating sleeve 3.As shown in Figure 4, locating sleeve clamping face c is processed into the shape of longitudinal tooth, is convenient to holding workpiece and stablizes.Locating sleeve 3 processes locating slot 13, and the upper locating slot surface of contact d of fine grinding.Piezoelectric sensor 2 is arranged on the lower locating slot 7 of claw 1.Pigtail splice 6 is screwed in connector pin mounting hole 12.O-ring seal 4 is arranged in O-ring seal pilot hole 9, is placed on claw surface of contact a together by locating sleeve 3, O-ring seal 4, and electrode wires 10 is drawn from pigtail splice 6 simultaneously, ensures to contact reliably with piezoelectric sensor 2 with upper locating slot surface of contact d.Connect claw 1 and locating sleeve 3 with fastening bolt 5, complete the location of piezoelectric sensor 2 and fastening, ensure the reliability that clamping force is measured and sealing.
The measurement mechanism process of this piezoelectric type scroll chuck clamping force is simple, easy to use, is convenient to encapsulation, can adjusts, achieve the real-time monitoring of clamping force in mechanical processing process according to the specification of claw.
Claims (2)
1. a piezoelectric type scroll chuck clamping force measurement mechanism, comprises three-jaw chuck pawl, piezoelectric sensor, locating sleeve, O-ring seal, fastening bolt and pigtail splice; It is characterized in that, the face of three-jaw chuck pawl is plane, face has lower locating slot and the fastening bolt pilot hole of piezoelectric sensor; Locating sleeve there are bolt positioning hole, pigtail splice mounting hole and upper locating slot; Piezoelectric sensor is arranged on the lower locating slot of three-jaw chuck pawl; Pigtail splice is screwed in wire terminal mounting hole; O-ring seal is arranged in the O-ring seal pilot hole of locating sleeve, and locating sleeve, O-ring seal are placed in claw plane together, ensures that the electrode wires of piezoelectric sensor is drawn from the pigtail splice of locating sleeve; Fastening bolt is screwed in the bolt positioning hole of claw along the axis of locating sleeve, completes clamping and the sealing of piezoelectric sensor.
2. a kind of piezoelectric type scroll chuck clamping force measurement mechanism according to claim 1, is characterized in that, piezoelectric sensor and upper locating slot surface of contact, lower locating slot surface of contact compact siro spinning technology, ensures the accuracy of clamping force test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182244.0A CN104931176B (en) | 2015-04-16 | 2015-04-16 | A kind of piezoelectric type scroll chuck clamps force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182244.0A CN104931176B (en) | 2015-04-16 | 2015-04-16 | A kind of piezoelectric type scroll chuck clamps force measuring device |
Publications (2)
| Publication Number | Publication Date |
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| CN104931176A true CN104931176A (en) | 2015-09-23 |
| CN104931176B CN104931176B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510182244.0A Active CN104931176B (en) | 2015-04-16 | 2015-04-16 | A kind of piezoelectric type scroll chuck clamps force measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971977A (en) * | 2016-06-03 | 2016-09-28 | 南通纺都置业有限公司 | Clamping force test device for finger oil cylinder under different oil pressures |
| CN107479404A (en) * | 2017-09-21 | 2017-12-15 | 西北工业大学 | A kind of intelligent clamping device and its Active Control Method |
| CN107971505A (en) * | 2017-11-30 | 2018-05-01 | 江阴振宏重型锻造有限公司 | A kind of dynamometry clamping device of wind power principal axis turning system |
| CN112262016A (en) * | 2019-03-26 | 2021-01-22 | 罗姆股份有限公司 | Method for determining a clamping force |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401977A (en) * | 2001-08-10 | 2003-03-12 | 大连理工大学 | Torductor |
| EP1693659A1 (en) * | 2005-02-21 | 2006-08-23 | Werner Kluft | Force measuring device inside a fixing screw |
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN103196594A (en) * | 2013-04-10 | 2013-07-10 | 济南大学 | Spoke type parallel piezoelectricity six-dimensional force sensor and measuring method |
| CN104384626A (en) * | 2014-11-07 | 2015-03-04 | 池州市大正机械制造有限责任公司 | Bevel gear turning and clamping device |
| CN104439356A (en) * | 2014-12-03 | 2015-03-25 | 常州市荣鑫车辆配件厂 | Three-jaw chuck capable of realizing automatic clamping |
-
2015
- 2015-04-16 CN CN201510182244.0A patent/CN104931176B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401977A (en) * | 2001-08-10 | 2003-03-12 | 大连理工大学 | Torductor |
| EP1693659A1 (en) * | 2005-02-21 | 2006-08-23 | Werner Kluft | Force measuring device inside a fixing screw |
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN103196594A (en) * | 2013-04-10 | 2013-07-10 | 济南大学 | Spoke type parallel piezoelectricity six-dimensional force sensor and measuring method |
| CN104384626A (en) * | 2014-11-07 | 2015-03-04 | 池州市大正机械制造有限责任公司 | Bevel gear turning and clamping device |
| CN104439356A (en) * | 2014-12-03 | 2015-03-25 | 常州市荣鑫车辆配件厂 | Three-jaw chuck capable of realizing automatic clamping |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971977A (en) * | 2016-06-03 | 2016-09-28 | 南通纺都置业有限公司 | Clamping force test device for finger oil cylinder under different oil pressures |
| CN107479404A (en) * | 2017-09-21 | 2017-12-15 | 西北工业大学 | A kind of intelligent clamping device and its Active Control Method |
| CN107479404B (en) * | 2017-09-21 | 2018-07-03 | 西北工业大学 | A kind of intelligence clamping device and its Active Control Method |
| CN107971505A (en) * | 2017-11-30 | 2018-05-01 | 江阴振宏重型锻造有限公司 | A kind of dynamometry clamping device of wind power principal axis turning system |
| CN112262016A (en) * | 2019-03-26 | 2021-01-22 | 罗姆股份有限公司 | Method for determining a clamping force |
| CN112262016B (en) * | 2019-03-26 | 2022-06-28 | 罗姆股份有限公司 | Method for determining a clamping force |
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| Publication number | Publication date |
|---|---|
| CN104931176B (en) | 2018-02-16 |
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