CN104930995A - Torsion spring-based novel measuring device - Google Patents
Torsion spring-based novel measuring device Download PDFInfo
- Publication number
- CN104930995A CN104930995A CN201510316284.XA CN201510316284A CN104930995A CN 104930995 A CN104930995 A CN 104930995A CN 201510316284 A CN201510316284 A CN 201510316284A CN 104930995 A CN104930995 A CN 104930995A
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- Prior art keywords
- rotating shaft
- gear
- shaft
- torsion spring
- encoder
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a torsion spring-based novel measuring device and belongs to the mechanical design and mechanical transmission technical field. A toothed bar is fixed on the base of a machine tool; an encoder supporting seat is fixedly connected with a machine tool movement component; an absolute encoder is fixed on the encoder supporting seat; a rotating shaft is located in the encoder supporting seat; two bearings are located at end portions of the shoulders of the shaft; one end of the rotating shaft is fixedly connected with the input shaft of the absolute encoder; a master gear is fixedly connected with the other end of the rotating shaft through a flat key; a slave gear is located at an end portion of the master gear and is fixedly connected with the rotating shaft through a positioning screw; a torsion spring is connected between the master gear and the slave gear; shaft-end check rings are fixed at the end portions of the rotating shaft; and the shaft-end check rings are used for guaranteeing that the slave gear will not be ejected by the torsion spring and will not be separated from the rotating shaft. With the measuring device adopted, the linear displacement of the machine tool movement component can be measured accurately, reverse return errors and accumulative errors can be avoided, and signals will not be lost when power outage occurs. The measuring device has the advantages of high transplantability and wide application range, and can be applied to the measurement of the rotation angle of a gear shaft.
Description
Technical field
The invention belongs to Machine Design and technical field of mechanical transmission, specifically, relate to a kind of new measurement based on torsion spring.
Background technology
Absolute type encoder is widely used in the measurement of the anglec of rotation, straight-line displacement, rotating speed.Absolute type encoder is a kind of detecting element of direct coding, is represented the absolute position of axle, do not have cumulative errors by the pattern read on code-disc, and after power supply excision, signal is not lost.Usually be contained on measured axis, rotate with measured axis, the angular displacement of measured axis can be converted to the digital code of absolute type.On numerically-controlled machine, it coaxially connects with drive motor usually, belongs to indirect inspection.Due in the transmission process of turning axle to final moving component, there is the existence of backlash, therefore, usually can not draw the position of final moving component by this method very accurately.In engineering, use grating, magnetic grid, can measure the displacement of parts moving linearly very accurately, but grating, magnetic grid can only obtain increment signal, can not obtain absolute position signal, once power down, signal will be lost.
Summary of the invention
In order to avoid the deficiency that prior art exists, the present invention proposes a kind of new measurement based on torsion spring, and measurement mechanism can measure the position of machine tool motion component accurately, eliminate the impact of backlash, and during power down, signal is not lost.
The technical solution adopted for the present invention to solve the technical problems is: comprise encoder support, absolute type encoder, holding screw, rotating shaft, bearing, main drive gear, from gear, torsion spring, shaft end ring, dog screw, encoder support and machine tool motion component are connected, absolute type encoder is fixed on encoder support, rotating shaft is positioned at encoder support, two bearings lays respectively at rotating shaft shaft shoulder end, and coordinate with encoder support inwall, rotating shaft one end and absolute type encoder input shaft are connected, main drive gear and the rotating shaft other end are connected by flat key, main drive gear end is positioned in rotating shaft from gear set, and located by dog screw with rotating shaft, main drive gear and be connected with torsion spring between gear, shaft end ring is fixed on roller end, be used for ensureing to be ejected by torsion spring from gear to depart from rotating shaft,
Described rotating shaft is Step Shaft, rotating shaft two end axles to there being tapped blind hole, the screw that rotating shaft both ends radial direction has the screw that coordinates with holding screw and dog screw to coordinate respectively.
Absolute type encoder, main drive gear, coaxially to install from gear and rotating shaft.
Beneficial effect
A kind of new measurement based on torsion spring that the present invention proposes is the new measurement of the use absolute type encoder based on torsion spring and two side set gears, is specially adapted to the straight-line displacement of measuring machine tool motion component.Tooth bar is fixed on the base of lathe, and encoder support and machine tool motion component are connected; Absolute type encoder is fixed on encoder support, rotating shaft is positioned at encoder support, two bearings lays respectively at shaft shoulder end, rotating shaft one end and absolute type encoder input shaft are connected, and main drive gear and the rotating shaft other end are connected by flat key, are positioned at main drive gear end from gear, and located by dog screw with rotating shaft, main drive gear and be connected with torsion spring between gear, shaft end ring is fixed on roller end, and shaft end ring is used for ensureing to be ejected by torsion spring from gear depart from rotating shaft.Measurement mechanism of the present invention accurately can measure the straight-line displacement of machine tool motion component, without reverse hysterisis error, do not have cumulative errors, and during power down, signal is not lost.Measurement mechanism of the present invention is portable strong, and applied range, also can be used for the measurement to gear shaft angle of revolution.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of new measurement based on torsion spring of the present invention is described in further detail.
Fig. 1 is measurement mechanism structural representation of the present invention.
Fig. 2 is that measurement mechanism of the present invention carries out straight-line displacement instrumentation plan.
Fig. 3 is that measurement mechanism of the present invention carries out angle of revolution instrumentation plan.
In figure:
1. holding screw 2. encoder support 3. bearing 4. main drive gear 5. flat key 6. torsion spring 7. is from gear 8. shaft end ring 9. dog screw 10. rotating shaft 11. absolute type encoder 12. tooth bar 13. gear shaft
Embodiment
The present embodiment is a kind of new measurement based on torsion spring.
Embodiment 1
Consult Fig. 1 ~ Fig. 3, the present embodiment measurement mechanism is by holding screw 1, encoder support 2, bearing 3, main drive gear 4, flat key 5, torsion spring 6, form from gear 7, shaft end ring 8, dog screw 9, rotating shaft 10, absolute type encoder 11 and tooth bar 12; Absolute type encoder 11 is fixedly connected with encoder support 2, it is inner that rotating shaft 10 is arranged on encoder support 2, the input shaft of absolute type encoder 11 is fixedly connected with by holding screw 1 with one end of rotating shaft 10, the input shaft of absolute type encoder 11 and rotating shaft 10 synchronous axial system, main drive gear 4 is installed and from gear 7 at the other end of rotating shaft 10, main drive gear 4 is fixedly connected with by flat key 5 with rotating shaft 10, directly be sleeved on rotating shaft 10 from gear 7, and can 10 to rotate, from the end face of gear 7 near the end of rotating shaft 10 around the shaft; Main drive gear 4 with have aperture from the axis of gear 7, the two ends of torsion spring are stretched into aperture respectively and are fixed, main drive gear 4 is connected by torsion spring with between gear 7, and the axial location ensureing from gear 7 by dog screw 9 from gear 7 in rotating shaft 10, the end face of rotating shaft 10 is provided with shaft end ring 8.
In the present embodiment, measurement mechanism is arranged on machine tool motion component.Tooth bar 12 is arranged on the base of lathe, and encoder support 2 and machine tool motion component are connected.During installation, main drive gear 4 is arranged in rotating shaft 10 and is fixedly connected with by flat key, and be sleeved on rotating shaft 10 from gear 7, main drive gear 4 is connected by torsion spring with from gear 7, tightens shaft end ring.Now, rotate from gear 7, because the effect of torsion spring, main drive gear 4 and between gear 7, there is moment of torsion, turn to the size to fit making moment of torsion, and main drive gear 4 tooth and engaging with two sides of a teeth groove of tooth bar 12 respectively from a tooth of gear 7; Tighten dog screw 9, make main drive gear 4 and keep fixing from the relative position of gear 7, then device is placed in corresponding installation site on machine tool motion component, make main drive gear 4 tooth and engage with two sides of a teeth groove of tooth bar 12 respectively from a tooth of gear 7, unclamp dog screw 9, fix device.Now, along with the motion of machine tool motion component, main drive gear 4 and rotating from gear 7, and there is a tooth to engage with two sides of a teeth groove of tooth bar 12 all the time respectively, absolute type encoder 11 input shaft synchronous axial system is driven by rotating shaft 10, the straight-line displacement of machine tool motion component can be obtained by simply converting, when machine tool motion component counter motion, engage due to main drive gear 4 with from two sides of gear 7 with the same teeth groove of tooth bar 12, so there is no backlash, measurement there will not be reverse hysterisis error, there is no cumulative errors, during power down, signal is not lost.
Embodiment 2
Consult Fig. 1 ~ Fig. 3, the present embodiment measurement mechanism is by holding screw 1, encoder support 2, bearing 3, main drive gear 4, flat key 5, torsion spring 6, form from gear 7, shaft end ring 8, screw 9, rotating shaft 10, absolute type encoder 11 and gear shaft 13.Absolute type encoder 11 is fixedly connected with encoder support 2, it is inner that rotating shaft 10 is arranged on encoder support 2, the input shaft of absolute type encoder 11 extend into one end of rotating shaft 10, the radial direction of rotating shaft 10 is connected by the input shaft of holding screw and absolute type encoder 11, makes absolute type encoder 11 input shaft and rotating shaft 10 synchronous axial system; Main drive gear 4 is installed and from gear 7, main drive gear 4 is connected by flat key 5 with rotating shaft 10 at the other end of rotating shaft 10, is sleeved on rotating shaft 10 from gear 7, and can 10 to rotate around the shaft.From end face near rotating shaft 10 of the end face of gear 7, main drive gear 4 with have aperture from the axis of gear 7, the two ends of torsion spring are stretched into aperture respectively and are fixed, main drive gear 4 is connected by torsion spring with between gear 7, by dog screw 9, rotating shaft 10 ensures that rotating shaft 10 end face is provided with shaft end ring 8 from the axial location of gear 7 on rotating shaft 10 from gear 7.
In the present embodiment, measurement mechanism is fixedly mounted on machine tool motion component; When the anglec of rotation of prototype gear axle 13, main drive gear 4 and rotating shaft 10 are connected by flat key 5, and be sleeved on rotating shaft 10 from gear 7, main drive gear 4 is connected by torsion spring 6 with from gear 7, tightens shaft end ring; Now, rotate from gear 7, in the effect of torsion spring, main drive gear 4 and between gear 7, there is moment of torsion, rotate the size to fit making moment of torsion, and main drive gear 4 tooth and two sides of a teeth groove cogged with gear shaft 13 respectively from a tooth of gear 7 are engaged, and tighten dog screw 9, make main drive gear 4 and keep fixing from the relative position of gear 7.Measurement mechanism is placed in corresponding installation site in frame, and two sides of the teeth groove making main drive gear 4 tooth and cog with gear shaft 13 respectively from a tooth of gear 7 are engaged; Unclamp dog screw 9, along with the rotation of tested gear shaft 13, main drive gear 4 and thereupon rotating from gear 7, and two sides of the teeth groove having a tooth and gear shaft 13 to cog all the time are respectively engaged, absolute type encoder 11 input shaft synchronous axial system is driven, by the anglec of rotation that can obtain gear shaft that converts by rotating shaft 10.When gear shaft 13 rotates backward, because main drive gear 4 and two sides of same teeth groove of cogging with gear shaft 13 all the time from gear 7 are engaged, so there is no backlash, measure and there will not be reverse hysterisis error; Measurement mechanism adopts absolute type encoder, and do not have cumulative errors, during power down, signal is not lost.
Claims (2)
1. the new measurement based on torsion spring, it is characterized in that: comprise encoder support, absolute type encoder, holding screw, rotating shaft, bearing, main drive gear, from gear, torsion spring, shaft end ring, dog screw, encoder support and machine tool motion component are connected, absolute type encoder is fixed on encoder support, rotating shaft is positioned at encoder support, two bearings lays respectively at rotating shaft shaft shoulder end, and coordinate with encoder support inwall, rotating shaft one end and absolute type encoder input shaft are connected, main drive gear and the rotating shaft other end are connected by flat key, main drive gear end is positioned in rotating shaft from gear set, and located by dog screw with rotating shaft, main drive gear and be connected with torsion spring between gear, shaft end ring is fixed on roller end, be used for ensureing to be ejected by torsion spring from gear to depart from rotating shaft,
Described rotating shaft is Step Shaft, rotating shaft two end axles to there being tapped blind hole, the screw that rotating shaft both ends radial direction has the screw that coordinates with holding screw and dog screw to coordinate respectively.
2. the new measurement based on torsion spring according to claim 1, is characterized in that: absolute type encoder, main drive gear, coaxially install from gear and rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316284.XA CN104930995A (en) | 2015-06-10 | 2015-06-10 | Torsion spring-based novel measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316284.XA CN104930995A (en) | 2015-06-10 | 2015-06-10 | Torsion spring-based novel measuring device |
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| Publication Number | Publication Date |
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| CN104930995A true CN104930995A (en) | 2015-09-23 |
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| CN201510316284.XA Pending CN104930995A (en) | 2015-06-10 | 2015-06-10 | Torsion spring-based novel measuring device |
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| CN (1) | CN104930995A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367233A (en) * | 2016-05-12 | 2017-11-21 | 鞍钢股份有限公司 | A kind of bidentate device for detecting distance of travel and method |
| CN108594758A (en) * | 2018-06-22 | 2018-09-28 | 西安飞机工业（集团）有限责任公司 | A kind of measurement method for reciprocating motion |
| CN111397494A (en) * | 2020-03-09 | 2020-07-10 | 五邑大学 | Soft finger convenient to measure |
Citations (6)
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|---|---|---|---|---|
| JP2001091203A (en) * | 1999-09-20 | 2001-04-06 | Orio Seimitsu Kk | Machine tool accuracy measuring device |
| CN101033986A (en) * | 2007-01-24 | 2007-09-12 | 王天从 | Valve position sensor of valve electric device |
| CN102658495A (en) * | 2012-06-07 | 2012-09-12 | 天津第一机床总厂 | Cutter spindle box of numerically-controlled spiral bevel gear milling machine |
| CN202988442U (en) * | 2012-12-28 | 2013-06-12 | 鹤壁市通达矿山设备有限公司 | Digital master command control system for mine hoist |
| CN203572471U (en) * | 2013-08-22 | 2014-04-30 | 恒天九五重工有限公司 | Device for measuring rotation angle for return driving during loading of rotary drilling rig |
| CN204788318U (en) * | 2015-06-10 | 2015-11-18 | 西北工业大学 | Crack measuring device disappears |
-
2015
- 2015-06-10 CN CN201510316284.XA patent/CN104930995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091203A (en) * | 1999-09-20 | 2001-04-06 | Orio Seimitsu Kk | Machine tool accuracy measuring device |
| CN101033986A (en) * | 2007-01-24 | 2007-09-12 | 王天从 | Valve position sensor of valve electric device |
| CN102658495A (en) * | 2012-06-07 | 2012-09-12 | 天津第一机床总厂 | Cutter spindle box of numerically-controlled spiral bevel gear milling machine |
| CN202988442U (en) * | 2012-12-28 | 2013-06-12 | 鹤壁市通达矿山设备有限公司 | Digital master command control system for mine hoist |
| CN203572471U (en) * | 2013-08-22 | 2014-04-30 | 恒天九五重工有限公司 | Device for measuring rotation angle for return driving during loading of rotary drilling rig |
| CN204788318U (en) * | 2015-06-10 | 2015-11-18 | 西北工业大学 | Crack measuring device disappears |
Non-Patent Citations (1)
| Title |
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| 伍利群: "齿轮传动间隙的消除方法", 《机床与液压 》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367233A (en) * | 2016-05-12 | 2017-11-21 | 鞍钢股份有限公司 | A kind of bidentate device for detecting distance of travel and method |
| CN108594758A (en) * | 2018-06-22 | 2018-09-28 | 西安飞机工业（集团）有限责任公司 | A kind of measurement method for reciprocating motion |
| CN111397494A (en) * | 2020-03-09 | 2020-07-10 | 五邑大学 | Soft finger convenient to measure |
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Application publication date: 20150923 |