CN101963498B - Special fixture for realizing hob measurement on trilinear-coordinate measuring instrument - Google Patents
Special fixture for realizing hob measurement on trilinear-coordinate measuring instrument Download PDFInfo
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- CN101963498B CN101963498B CN2009101816533A CN200910181653A CN101963498B CN 101963498 B CN101963498 B CN 101963498B CN 2009101816533 A CN2009101816533 A CN 2009101816533A CN 200910181653 A CN200910181653 A CN 200910181653A CN 101963498 B CN101963498 B CN 101963498B
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- hob
- hobboing cutter
- trilinear
- special fixture
- measuring instrument
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Abstract
The invention discloses a special fixture for realizing hob measurement on a trilinear-coordinate measuring instrument, which can realize the precision measurement of hobs on a trilinear-coordinate measuring instrument, and aims to overcome the defects that universal positioning element assembly can not realize the accurate positioning of hobs, and excessively depends on special measurement software packages. In the invention, a special fixture which can carry out accurate positioning of hobs on a trilinear-coordinate measuring instrument and realize the precision measurement of hobs on a trilinear-coordinate measuring instrument just by the aid of universal trilinear-coordinate measuring instrument software is designed. The special fixture is characterized in that one end of the special fixture is in the structure that the top tip of a spiral tip cone is fitted with the conical surface of a central hole of a hob, and the other end of the special fixture is in the structure that the external conical surface of a morse taper-shank of the hob is fitted with the internal conical surface of a morse taper bush, and two contact surfaces can be combined closely by spirally driving the spiral tip cone so as to eliminate the five degrees of freedom of the hob; in the direction along the axis of the hob, by axially inserting a positioning wedge in the wedge surface of a crumb collecting slot of the hob (wherein the two sphenoidal surfaces are fitted with each other), the special fixture restrains the degree of freedom of rotation of the hob and accurately positions the hob, meanwhile, the positioning error caused by using indexing elements such as graduated disks and the like is avoided, and the efficiency of hob measurement is improved.
Description
Technical field
The present invention relates to a kind of frock clamp of measuring the hobboing cutter precision on the three-coordinates measuring machine that is implemented in.
Background technology
In the modern machine product manufacturing industry, three-coordinates measuring machine (being also referred to as three coordinate measuring machine) has obtained using widely, and it can be in a three dimensions scope, measurements such as implementation space geometric configuration, plane curve and circumference calibration.Three-coordinates measuring machine has can make the detector that three directions move; Can on three orthogonal guide rails, move; This detector is gathered the displacement signal of three axles with contact or mode such as noncontact, and the treated device of displacement measurement data and the computing of three axles are as the each point (x that confirms on the measured workpiece; Y, z) and each item functional measurement index.Therefore, the precision measure that can carry out of three-coordinates measuring machine comprises dimensional accuracy, bearing accuracy, geometric accuracy and contour accuracy etc.
On the other hand, realize accurate measurement to measured workpiece, also must be according to the definite coordinate system of three-coordinates measuring machine; Measured workpiece is accurately located; Through acquisition sensor (probe or laser) image data on the measured workpiece measurement point, obtain the measured value of the discrete spatial point position of measured workpiece geometric element then, calculate through certain mathematical then; Completion is finally confirmed the geometric element precision of measured workpiece to the analysis match of measured point (point group).
In order to realize the accurate location of measured workpiece on three-coordinates measuring machine; Three-coordinates measuring machine manufacturer sells the user with general setting element and corresponding measuring instrument special software inclusion usually together; The user then gets up these general setting element combination collocations, realizes the location of testee.But in practical application, general setting element combination collocation can not cover the location needs of all parts, the especially positioning requirements of complicated abnormal shape curved surface fully.And the measurement of measured workpiece is too dependent on of a great variety, and the computer packages that costs an arm and a leg, and is with huge cost for the three-coordinates measuring machine user.Therefore, under general three-coordinates measuring machine software platform back-up environment, the special measurement positioning fixture of exploitation special workpiece is very important.
Summary of the invention
The purpose of this invention is to provide a kind of frock clamp of on general three-coordinates measuring machine software platform, accomplishing the precision measure of hobboing cutter complex geometry; Avoid general setting element combination collocation can not realize the hobboing cutter location defect fully; Elimination is to the dependence of special measurement software package; Reduce the enterprise production cost, improve efficiency of measurement.
The present invention, three-coordinates measuring machine hob measurement unit clamp adopts an end center pit, other end Morse's taper to carry out axial location, eliminates hobboing cutter in three-dimensional five degree of freedom.Spiral addendum cone in the tailstock stretches into center pit under spiral promotes, and the Morse taper shank male cone (strobilus masculinus) of compressing hobboing cutter closely contacts the transmission of formation friction torque with the inner conical surface of Mohs lining.The external cylindrical surface of Mohs lining and the endoporus of bracing frame show the formation revolute pair, and on the external cylindrical surface of Mohs lining the stop groove are arranged.When the lozenges of location voussoir inserted the lozenges of hobboing cutter scrap slot, last degree of freedom of hobboing cutter was restrained, has realized that the rotation of hobboing cutter is self-align.Three hexagon head supporting screws below the adjusting base plate are realized hob measurement unit clamp and the three-coordinates measuring machine coordinate system consistance in Z axle (highly) direction.
The self-locating function of this three-coordinates measuring machine hob measurement unit clamp has been realized the hobboing cutter accurate location on the moving axis direction that rotates, and avoids the positioning error that adopts index plate equal indicative element location to be brought, has improved the efficiency of measurement of hobboing cutter.
Description of drawings
Below in conjunction with accompanying drawing and instance the present invention is described further.
Fig. 1 is a front view of the present invention;
Fig. 2 is a vertical view of the present invention;
In the accompanying drawing, the part of each sequence number representative is: 1. knob, 2. spiral addendum cone, 3. nut; 4. tailstock, 5. priming cup, 6. hobboing cutter, 7. location voussoir; 8. support bar, 9. lock-screw, 10. Mohs lining, 11. socket head cap screws; 12. the hexagon head supporting screw, 13. socket head cap screws, 14. Mohs bush set screws, 15. location voussoir lock-screws.
Embodiment
Visible from Fig. 1, Fig. 2, spiral addendum cone 2, hobboing cutter 6 and Mohs lining 10 are on same axis.The center pit conical surface of the top and hobboing cutter 6 of spiral addendum cone 2 contacts, and the Morse taper shank male cone (strobilus masculinus) of hobboing cutter 6 contacts with Mohs lining 10 inner conical surfaces, and spiral addendum cone 2 is combined closely two surface of contact under spiral promotes, and has eliminated five degree of freedom of hobboing cutter 6.When hobboing cutter 6 when axis rotates, Mohs lining 10 rotates with hobboing cutter 6 under the friction force effect simultaneously.In certain position of confirming, location voussoir 7 inserts in the lozenges of hobboing cutter 6 scrap slots vertically, and two lozenges match, make hobboing cutter 6 at rotary freedom restrained and accurate location.Behind the locking Mohs bush set screw 14; To locate voussoir 7 removes; And through 15 lockings of location voussoir lock-screw; Three hexagon head supporting screws 12 below the adjusting base plate make unit clamp and the three-coordinates measuring machine coordinate system consistance in Z axle (highly) direction, and the consistance of two coordinate axis of other of three-coordinates measuring machine coordinate system (X, Y) is then proofreaied and correct by the three-dimensional coordinates measurement instrument probe.
Claims (2)
1. three-coordinates measuring machine hob measurement unit clamp is made up of hobboing cutter (6) axial location mechanism and circumferential self-align mechanism; Hobboing cutter (6) axial location mechanism is made up of base plate and the bracing frame and the tailstock (4) that are installed on the base plate; It is characterized in that in the base plate lower end, be designed with three hexagon head supporting screws; In the bracing frame axis hole, Mohs lining (10) is housed, constitute revolute pair with bracing frame and be connected, Mohs lining (10) is through Mohs bush set screw (14) stop; And in tailstock (4) axis hole, spiral addendum cone (2) being housed, spiral addendum cone (2) can be done flexible and rotational motion along tailstock (4) endoporus; The end thread of spiral addendum cone (2) cooperates with nut (3), and nut (3) is fixed on tailstock (4) tail end; The center pit conical surface of the top and hobboing cutter (6) of spiral addendum cone (2) matches; The Morse taper shank male cone (strobilus masculinus) of hobboing cutter (6) matches with Mohs lining (10) inner conical surface; At spiral addendum cone (2) under spiral promotes; The Morse taper shank male cone (strobilus masculinus) of hobboing cutter (6) and Mohs lining (10) inner conical surface are combined closely, and have eliminated five degree of freedom of hobboing cutter (6).
2. three-coordinates measuring machine hob measurement unit clamp according to claim 1, its circumferential self-align mechanism mainly is made up of location voussoir (7) and support bar (8) two parts; Location voussoir (7) is installed on the bracing frame through support bar (8), support bar (8) can be on the bracing frame spigot surface of chute at hobboing cutter (6) axial stretching, through lock-screw (9) fixing branch strut (8); Location voussoir (7) upper end is passed in the circular hole of support bar (8) one ends; Can be through location voussoir lock-screw (15) locking, and insert in the wedge shape scrap slot of hobboing cutter (6) lower end of location voussoir (7), and match with the lozenges of hobboing cutter (6); Realized the location that turns to; Eliminated the rotational freedom of hobboing cutter (6), i.e. six-freedom degree has been realized the hobboing cutter accurate location on the moving axis direction that rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101816533A CN101963498B (en) | 2009-07-24 | 2009-07-24 | Special fixture for realizing hob measurement on trilinear-coordinate measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101816533A CN101963498B (en) | 2009-07-24 | 2009-07-24 | Special fixture for realizing hob measurement on trilinear-coordinate measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101963498A CN101963498A (en) | 2011-02-02 |
| CN101963498B true CN101963498B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101816533A Expired - Fee Related CN101963498B (en) | 2009-07-24 | 2009-07-24 | Special fixture for realizing hob measurement on trilinear-coordinate measuring instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864800B (en) * | 2015-05-26 | 2018-11-09 | 重庆市江津区禾丰机械有限公司 | Hobboing cutter anterior angle detector and application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569128Y (en) * | 2001-04-21 | 2003-08-27 | 严峻 | Detector for ground hobbing-cutter |
| CN2760502Y (en) * | 2004-12-30 | 2006-02-22 | 上海萨克斯动力总成部件系统有限公司 | Position clamp device for three coordinate measuring machine |
| CN101319889A (en) * | 2008-06-25 | 2008-12-10 | 无锡富瑞德精密机械有限公司 | Locating tensioning mechanism |
| CN201561747U (en) * | 2009-07-24 | 2010-08-25 | 浙江午马减速机有限公司 | Special fixture for measuring hobbing cutter of three-coordinate measuring system |
-
2009
- 2009-07-24 CN CN2009101816533A patent/CN101963498B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569128Y (en) * | 2001-04-21 | 2003-08-27 | 严峻 | Detector for ground hobbing-cutter |
| CN2760502Y (en) * | 2004-12-30 | 2006-02-22 | 上海萨克斯动力总成部件系统有限公司 | Position clamp device for three coordinate measuring machine |
| CN101319889A (en) * | 2008-06-25 | 2008-12-10 | 无锡富瑞德精密机械有限公司 | Locating tensioning mechanism |
| CN201561747U (en) * | 2009-07-24 | 2010-08-25 | 浙江午马减速机有限公司 | Special fixture for measuring hobbing cutter of three-coordinate measuring system |
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| Publication number | Publication date |
|---|---|
| CN101963498A (en) | 2011-02-02 |
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