CN104930950A - Spherical inner thread pitch diameter measuring method - Google Patents
Spherical inner thread pitch diameter measuring method Download PDFInfo
- Publication number
- CN104930950A CN104930950A CN201510322020.5A CN201510322020A CN104930950A CN 104930950 A CN104930950 A CN 104930950A CN 201510322020 A CN201510322020 A CN 201510322020A CN 104930950 A CN104930950 A CN 104930950A
- Authority
- CN
- China
- Prior art keywords
- nut
- size
- thread pitch
- pitch diameter
- spherical
- 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
Links
Abstract
The invention relates to a spherical inner thread pitch diameter measuring method. According to the method, a spherical inner thread pitch diameter calculation formula is established through analyzing ball screw assembly structure principles, and target sizes can be obtained through a size conversion calculating mode. With the method adopted, a special measuring tool is not needed to be designed and purchased, and therefore, production cost can be reduced, and a production cycle can shortened. The spherical inner thread pitch diameter measuring method has the advantages of simple measuring tool, high maneuverability and excellent practical application effects.
Description
Technical field
The present invention relates to a kind of spherical thread pitch diameter measuring method, the method is applicable to measurement in precise ball screw pair process of manufacture, inspection.
Background technology
Along with fast development and the demand of modern industry, Aero-Space, weaponry, the precision machine tool market demand to precise ball screw pair is more obvious.And the key affecting precise ball screw pair is the pitch diameter of thread size Φ of ball-screw and feed screw nut
in, i.e. the orbital arc diameter of steel ball when lead screw pair inner loop is moved.The central diameter dimensional accuracy of screw thread affects the gyration of precise ball screw pair, the precision of rectilinear motion.
And the method adopting band table internal calliper to measure the spherical internal thread of nut in the past has some problem following.
(1) application of band table internal calliper has limitation.Band table internal calliper machines rear structure and cannot adjust or change steel ball, and a kind of internal calliper can only measure a kind of thread pitch diameter of helical pitch.And band is shown to produce with nut internal diameter when internal calliper uses to interfere, and cannot measure and obtain all thread pitch diameter physical sizes.Therefore band table internal calliper measurement thread pitch diameter has limitation.
(2) numerical instability is measured.In internal thread grinding process, different processing staff uses band table internal calliper instrument mode difference, level differs, and the measurement result obtained sometimes may be inconsistent, there is personnel's measuring error.When thread pitch diameter dimensional tolerence is strict, this kind of method is difficult to ensure.
(3) the band table internal calliper measuring tool of different size, needs special Design of Measuring Tools personnel to design.Clamp head place after processing adopts welding or bonding way to be fixed by steel ball, and after using a period of time, steel ball surface exists wearing and tearing, and band table internal calliper needs periodic replacement, and the production and processing of band table internal calliper measurer needs the cycle.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, propose a kind of spherical thread pitch diameter measuring method, solve prior art and measure the problem that apparatus limitation is large, measure numerical value instability.
Technical scheme of the present invention comprises the steps:
Step 1, by miking nut actual outside diameter size W, and record;
Step 2, processes as grinding internal thread benchmark after nut fine grinding cylinder, then carries out spherical threaded grinding, passes through the combination thickness size H of miking ball and nut in process, and record;
Step 3, sets up spherical thread pitch diameter computing formula, and obtains central diameter Φ target size by the mode that Size Conversion calculates;
Intermediate conversion size L:L=W-H × 2
Thread pitch diameter size Φ: Φ=L+R × 2
In formula, L is intermediate conversion size, and W is nut actual outside diameter size, and H is the combination thickness size of ball and nut, and Φ is central diameter size, and R is ball bearing radius size.
In described step 2, before grinding spherical threaded, need to ensure that nut cylindrical, nut inner hole and nut inner thread right alignment are consistent, and acted as reference mutual.
In described step 2, during grinding spherical threaded, with nut cylindrical for benchmark, centering nut cylindrical total run-out amount is not more than 0.008.
Advantageous effect of the present invention is as follows:
The present invention can measure the orbital arc diameter of ball when lead screw pair inner loop is moved accurately in process, do not need to measure specially the design of apparatus, purchase and reduce production cost and shorten the production cycle, survey instrument is simple, and workable, practical application effect is good.
Accompanying drawing explanation
Fig. 1 is principle analysis schematic diagram of the present invention.
In figure, L, intermediate conversion size, W, nut actual outside diameter size, the combination thickness size of H, ball and nut, Φ, central diameter size, Φ pearl, ball diameter, R, ball bearing radius.
Embodiment
Embodiment
Employing ball diameter Φ pearl 3.5, central diameter are that the ball screw assembly, of Φ 17 carries out analyzing examples.
Step 1, by the nut actual outside diameter size W of end-state after miking fine grinding, W=30, and record.
Step 2, processes as grinding internal thread benchmark after nut fine grinding cylinder, and during clamping, the total run-out of centering cylindrical is not more than 0.008.Start to carry out spherical threaded grinding, on lathe, measured the combination thickness size H of ball and nut in process by milscale, H=8.25, and record.
Bring actual measured value W=30 into, H=8.25 calculates,
L=W-H×2=30-8.25×2=13.5
Φ=L+1.75×2=13.5+3.5=17
Show that spherical thread pitch diameter numerical value is Φ 17.
In described step 2, before grinding spherical threaded, need to ensure that nut cylindrical, nut inner hole and nut inner thread right alignment are consistent, and acted as reference mutual.
In described step 2, during grinding spherical threaded, with nut cylindrical for benchmark, centering nut cylindrical total run-out amount is not more than 0.008.
By actual experiment and processing practice, the present invention can ensure feed screw nut spherical threaded central diameter machining precision.The above know-why being specific embodiments of the invention and using, any based on the equivalent transformation on technical solution of the present invention basis, all belong within protection scope of the present invention.
Claims (3)
1. spherical thread pitch diameter measuring method, is characterized in that comprising the steps:
Step 1, by miking nut actual outside diameter size W, and record;
Step 2, processes as grinding internal thread benchmark after nut fine grinding cylinder, starts to carry out spherical threaded grinding, passes through the combination thickness size H of miking ball and nut in process, and record;
Step 3, sets up spherical thread pitch diameter computing formula, and obtains central diameter Φ target size by the mode that Size Conversion calculates;
Intermediate conversion size L:L=W-H × 2
Thread pitch diameter size Φ: Φ=L+1.75 × 2
In formula, L is intermediate conversion size, and W is nut actual outside diameter size, and H is the combination thickness size of ball and nut, and Φ is central diameter size.
2. spherical thread pitch diameter measuring method according to claim 1, is characterized in that in described step 2, before grinding spherical threaded, needs to ensure that nut cylindrical, nut inner hole and nut inner thread right alignment are consistent, and acted as reference mutual.
3. spherical thread pitch diameter measuring method according to claim 1 and 2, is characterized in that in described step 2, and during grinding spherical threaded, with nut cylindrical for benchmark, centering nut cylindrical total run-out amount is not more than 0.008.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510322020.5A CN104930950A (en) | 2015-06-12 | 2015-06-12 | Spherical inner thread pitch diameter measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510322020.5A CN104930950A (en) | 2015-06-12 | 2015-06-12 | Spherical inner thread pitch diameter measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104930950A true CN104930950A (en) | 2015-09-23 |
Family
ID=54118228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510322020.5A Pending CN104930950A (en) | 2015-06-12 | 2015-06-12 | Spherical inner thread pitch diameter measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387459A (en) * | 2023-12-08 | 2024-01-12 | 天津德科智控股份有限公司 | Qualitative measurement gauge for machining precision of ball nut internal thread raceway |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542297A (en) * | 2003-04-30 | 2004-11-03 | ɼ����� | Pitch diameter displaced screw |
| CN101093158A (en) * | 2007-07-20 | 2007-12-26 | 上海应用技术学院 | Device of measuring internal thread |
| JP2014020075A (en) * | 2012-07-17 | 2014-02-03 | Jfe Pipe Fitting Mfg Co Ltd | Screw node reinforcement joint |
| US8702130B1 (en) * | 2012-05-04 | 2014-04-22 | Sielc Technologies Corporation | Fitting with improved tube clamping capability |
-
2015
- 2015-06-12 CN CN201510322020.5A patent/CN104930950A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542297A (en) * | 2003-04-30 | 2004-11-03 | ɼ����� | Pitch diameter displaced screw |
| CN101093158A (en) * | 2007-07-20 | 2007-12-26 | 上海应用技术学院 | Device of measuring internal thread |
| US8702130B1 (en) * | 2012-05-04 | 2014-04-22 | Sielc Technologies Corporation | Fitting with improved tube clamping capability |
| JP2014020075A (en) * | 2012-07-17 | 2014-02-03 | Jfe Pipe Fitting Mfg Co Ltd | Screw node reinforcement joint |
Non-Patent Citations (1)
| Title |
|---|
| 史卓先: "内螺纹中径测量的几种方法", 《工业计量》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387459A (en) * | 2023-12-08 | 2024-01-12 | 天津德科智控股份有限公司 | Qualitative measurement gauge for machining precision of ball nut internal thread raceway |
| CN117387459B (en) * | 2023-12-08 | 2024-02-27 | 天津德科智控股份有限公司 | Qualitative measurement gauge for machining precision of ball nut internal thread raceway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105571461B (en) | A kind of accurate taper hole accuracy measurement method | |
| CN205209415U (en) | Accurate taper hole NULL device | |
| CN103063113A (en) | Detecting jig for semiround workpiece | |
| CN103322962B (en) | For measuring gauge and the method for large scale steel wire bearing track diameter | |
| CN102331747B (en) | Method for machining and detecting slender axle-like part with continuous conical surfaces | |
| CN202661020U (en) | Tool used for measuring depth of conical hole in deep hole | |
| CN107228615A (en) | A kind of outer singly-bound symmetry measurement apparatus of axle and measuring method | |
| CN104457522A (en) | Method for measuring keyway symmetry degree of shaft part | |
| CN104930950A (en) | Spherical inner thread pitch diameter measuring method | |
| CN104713440A (en) | Quantitative measurement caliper gauge | |
| CN203772239U (en) | Angular contact ball bearing groove position measuring equipment | |
| CN204240901U (en) | Adjustable measurement measurer | |
| CN202947665U (en) | Roll neck blind hole symmetry measurement instrument | |
| CN103808288A (en) | Angular contact ball bearing groove position measuring method | |
| CN103983175A (en) | Outer cone detector | |
| CN203778898U (en) | Gear grinding clamp for gear shaft | |
| CN102962729A (en) | Method for realizing on-line measurement of multi-purpose measuring head for vertical numerically controlled lathe | |
| CN203037185U (en) | Detecting jig for semicircular workpiece | |
| CN109724497B (en) | Method for online detecting radius value of inner sphere | |
| CN207132833U (en) | A kind of volute end flanges medial slope and the special gauge of reference plane distance in hole | |
| CN205156809U (en) | Thickness measurement device | |
| CN202119363U (en) | Measuring scale for measuring internal diameters | |
| CN207365935U (en) | A kind of gear type product orientation detects gauge | |
| CN203518981U (en) | Gauge for measuring diameter of large-sized steel wire bearing rail hole | |
| CN205290687U (en) | Wheel wedge radial plane grinding fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |