CN2110857U - Null setting device for contact sensing gauge head - Google Patents
Null setting device for contact sensing gauge head Download PDFInfo
- Publication number
- CN2110857U CN2110857U CN 91233365 CN91233365U CN2110857U CN 2110857 U CN2110857 U CN 2110857U CN 91233365 CN91233365 CN 91233365 CN 91233365 U CN91233365 U CN 91233365U CN 2110857 U CN2110857 U CN 2110857U
- Authority
- CN
- China
- Prior art keywords
- gauge head
- contact
- head housing
- setting device
- ball
- 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.)
- Pending
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Abstract
The utility model discloses a null setting device for a contact sensing gauge head. A supporting mechanism for stylus run position is composed of three contact pairs formed by three internal conical surfaces on the positioning body of the stylus holder of the gauge head, matching with three steel balls fixed on the shell of the gauge head. When the stylus holder resets under the action of a spring, the null setting device can get high resetting accuracy, easy processing, mounting and adjustment because of the symmetry character of the conical surfaces. Thus, the utility model can be widely used in various contact-sensing gauge heads.
Description
The utility model relates to the balancing in a kind of contact-sensing probe.
Common contact-sensing probe all comprises a movable central core formula stylus holder, is equipped with on it to be used for touching the contact pilotage of surveying workpiece.When not working, stylus holder is in rest position under the effect of the balancing of being made up of spring and supporting device be zero-bit, when contact pilotage touches when measuring workpiece, stylus holder then departs from its rest position and produces activation signal by its inner sensing device delivers to metering circuit.Therefore, the bearing accuracy of gauge head depends primarily on balancing, depends on which kind of supporting device of employing and will obtain high-precision locator key.Existing technology is to adopt the partner supporting locator meams of Contact Pair of spherical bearing or two ball and a cylinder, described in russian patent SU144115 and BrP CN86105617.The partner positioning support mechanism of Contact Pair of a small amount of usefulness two beads and a big ball is also arranged.Their total shortcomings are to guarantee high bearing accuracy, and consistent because its each machining precision to Contact Pair is difficult to guarantee, relative positional accuracy to each other requires very high, and processing technology is difficult to reach, and is not easy very much and debug with bonding.
The purpose of this utility model provides a kind of new balancing, and this device can guarantee to obtain very high repetitive positioning accuracy, and is easy to process and debug.
The utility model is realized above purpose by following proposal.It provides a kind of positioning support mechanism that is made up of female cone and ball, this supporting device comprises that three pairs cooperate the Contact Pair that forms by an internal conical surface with a sphere, it is on the circumference at center with gauge head stylus holder axis that this three pairs of circular cones-ball Contact Pair is distributed on one, wherein ball is fixed on the gauge head housing, and female cone is then directly processed on the space orientation body on the stylus holder.During assembling,, make it and each corresponding female cone uniform contact definite exactly gauge head zero-bit so be easy to adjust the position of each ball because circular conical surface has neutrality.When resetting after the stylus holder motion, same because circular conical surface to the guide effect of neutrality, obtains very high repetitive positioning accuracy thereby make stylus holder can get back to zero-bit exactly.In addition, because circular cone-ball Contact Pair is the circular arc line contact, so surface of contact is big, the location is reliable, and is wear-resistant, the serviceable life of having improved balancing.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the cut-open view of Fig. 1 along the I-I line.
With reference to Fig. 1, Fig. 2, the embodiment that is according to the contact-sensing probe balancing of the utility model formation as described below.Wherein, be fixed with space orientation body (2) on the stylus holder (1), be processed with three coning angles on it and be 90 ° female cone type concave surface (3), it is on the circumference of φ 26mm at center with the stylus holder axis that three internal conical surfaces (3) are distributed on one, three ball seats (5) are housed on gauge head housing (7) with it accordingly, are stained with the steel ball (4) of φ 5mm on it.Steel ball (4) complements each other to form circular cone-ball Contact Pair with internal conical surface (3), and three pairs of Contact Pair promptly constitute positioning support mechanism.The installation portion diameter of ball seat (5) is slightly less than the mounting hole diameter on the housing (7), makes its position in surface level to finely tune with stopping screw, and ball seat (5) can be adjusted its position in vertical direction by adding adjustment pad (6) simultaneously.Add man-hour, can guarantee the precision of each internal conical surface, by adjusting the position of ball seat (5), make each steel ball (4) and each internal conical surface (3) keep uniform contact during installation by hand lapping.Contact (area) pattern by observing each steel ball and internal conical surface and test synthesis are reflected to the error on the contact pilotage, constantly revise, adjust with the way of facing-up, with glue ball seat are shut at last.Since internal conical surface (3) to neutrality, can be easy to adjust to eliminate the geometric accuracy sum of errors mutual alignment trueness error of each steel ball (4) and ball seat (5), improved the contact precision that supports, thereby guaranteed the bearing accuracy of whole balancing.
The utlity model has very high repetitive positioning accuracy, through actual measurement, its resetting error≤0.3 μ, and prior art can only reach about 1 μ, and processing, debug all and be easier to, structure is also simplified greatly.Can be widely used in various contact-sensing probes.
Claims (4)
1, a kind of contact-sensing probe balancing, constitute by gauge head housing, spring and space orientation body, it is characterized in that on the gauge head housing, being equipped with three ball seats, be fixed with three steel balls on it, corresponding respectively the cooperation with three internal conical surfaces of processing on the space orientation body forms Contact Pair, three pairs of Contact Pair are the circumference uniform distribution at center along one with the stylus holder axis, constitute positioning support mechanism.
2,, it is characterized in that being added with the adjustment pad between ball seat and gauge head housing according to the described balancing of claim 1.
3,, it is characterized in that ball seat installation portion diameter is slightly less than the mounting hole diameter on the gauge head housing according to the described balancing of claim 1.
4,, it is characterized in that the female cone surface is through hand lapping according to the described balancing of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91233365 CN2110857U (en) | 1991-12-28 | 1991-12-28 | Null setting device for contact sensing gauge head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91233365 CN2110857U (en) | 1991-12-28 | 1991-12-28 | Null setting device for contact sensing gauge head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2110857U true CN2110857U (en) | 1992-07-22 |
Family
ID=4938221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91233365 Pending CN2110857U (en) | 1991-12-28 | 1991-12-28 | Null setting device for contact sensing gauge head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2110857U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915589A (en) * | 2010-08-19 | 2010-12-15 | 中国航空工业第六一八研究所 | Zero-debugging method of sensor for main control valve of steering engine actuator |
| CN101586942B (en) * | 2009-06-19 | 2011-02-02 | 北京工业大学 | Contact type optical fiber gauge head measuring method and apparatus |
| CN107538275A (en) * | 2017-06-16 | 2018-01-05 | 孟庆周 | It is a kind of to eliminate the measurement header structure for resetting gap |
| CN108895953A (en) * | 2018-05-11 | 2018-11-27 | 深圳清华大学研究院 | Contact measuring head, three coordinate measuring machine and tool setting gauge |
| CN111397555A (en) * | 2020-04-14 | 2020-07-10 | 中国计量科学研究院 | Parameter error measuring method and system of trigger type measuring head |
-
1991
- 1991-12-28 CN CN 91233365 patent/CN2110857U/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586942B (en) * | 2009-06-19 | 2011-02-02 | 北京工业大学 | Contact type optical fiber gauge head measuring method and apparatus |
| CN101915589A (en) * | 2010-08-19 | 2010-12-15 | 中国航空工业第六一八研究所 | Zero-debugging method of sensor for main control valve of steering engine actuator |
| CN101915589B (en) * | 2010-08-19 | 2011-12-14 | 中国航空工业第六一八研究所 | Zero-debugging method of sensor for main control valve of steering engine actuator |
| CN107538275A (en) * | 2017-06-16 | 2018-01-05 | 孟庆周 | It is a kind of to eliminate the measurement header structure for resetting gap |
| CN108895953A (en) * | 2018-05-11 | 2018-11-27 | 深圳清华大学研究院 | Contact measuring head, three coordinate measuring machine and tool setting gauge |
| CN108895953B (en) * | 2018-05-11 | 2020-08-21 | 深圳清华大学研究院 | Contact type measuring head, three-coordinate measuring machine and tool setting gauge |
| CN111397555A (en) * | 2020-04-14 | 2020-07-10 | 中国计量科学研究院 | Parameter error measuring method and system of trigger type measuring head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |