CN101391326A - Clamp for grinding external thread and method thereof - Google Patents
Clamp for grinding external thread and method thereof Download PDFInfo
- Publication number
- CN101391326A CN101391326A CNA2008101555346A CN200810155534A CN101391326A CN 101391326 A CN101391326 A CN 101391326A CN A2008101555346 A CNA2008101555346 A CN A2008101555346A CN 200810155534 A CN200810155534 A CN 200810155534A CN 101391326 A CN101391326 A CN 101391326A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- hole
- fixed block
- thread
- anchor clamps
- 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.)
- Granted
Links
Images
Abstract
The invention relates to an external thread grinding jig and an external thread grinding method, and the jig comprises a screw with one end part connected with one end part of a workpiece, and a screw fixed block provided with a through hole, the screw is movably inserted into the through hole, and the lead of the screw is the same with that of the workpiece; and a lug which is clamped between screw teeth for limiting the screw teeth from moving along the helical line trace relative to the screw fixed block is also arranged on the wall of the through hole. The invention provides the external thread grinding jig with a brand new structure, the principle of the jig can make the workpiece realize the screw thread travel relative to a grinding head at a time rather than the traditional movement synthesis mode, then the external thread shape is more accurate, and the invention has advantages of simple structure, convenient implementation and reduced costs.
Description
Technical field
The present invention relates to a kind of anchor clamps and use this kind anchor clamps and grind externally threaded method, is a kind of anchor clamps that are exclusively used in accurate screw rod of grinding and worm screw specifically.
Background technology
Be not exclusively used in the accurate externally threaded anchor clamps of grinding in the prior art, operating personnel are when grinding precision external screw thread, usually workpiece clamp to be ground is slowly run on special purpose machine tool main folder tool, bistrique (for example profiling emery wheel, cutter etc.) is moved at a predetermined velocity along machine tool chief axis, finish externally threaded accurate grinding.When the workpiece of institute's grinding has two or multiple thread, finish the grinding of carrying out next head thread behind the position of adjusting the relative bistrique of workpiece after the head thread grinding again.
The easy bigger site error of generation between the head that existing grinding method exists grinding accuracy low problem, especially screw thread and the head.Though can adopt complicated numerical control device to improve the grinding accuracy of screw thread, equipment manufacturing cost costliness and grinding quality still are not very desirable.
Summary of the invention
The object of the invention is exactly the mill external screw thread anchor clamps that provide a kind of grinding accuracy high in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution used in the present invention is: a kind of mill external screw thread anchor clamps, comprise the screw rod that an end is connected with an end of workpiece to be processed, the screw rod fixed block that offers through hole, described screw rod activity is plugged in the described through hole, and the helical pitch of described screw rod is identical with the helical pitch of workpiece; Also be provided with between the thread that is fastened on screw rod on the hole wall of described through hole and be used to limit the projection that the relative screw rod fixed block of thread of screw rod moves along the spiral stitching.The invention provides a kind of mill external screw thread anchor clamps of brand new thus, the principle of these anchor clamps makes that the screw thread travel of the relative bistrique of workpiece can disposable realization and non-traditional motion synthesis mode makes that externally threaded form accuracy is more accurate.
On the hole wall that is arranged on through hole that described projection can be dismantled, described screw rod fixed block is provided with at least two detent mechanisms that are used to locate described projection, to the spacing between the described detent mechanism of small part is the integral multiple and branch several times sum of screw rod helical pitch, and this mark satisfies:
Wherein i is a natural number, and j is the natural number smaller or equal to i.Though also can realize multiple-threaded grinding by other locate mode, the location benchmark of bistrique for example is set, but the mode that the screw rod location is set on the screw rod fixed block is not only directly perceived more, the location is simple, the easy operating personnel, and precision also guarantees easily.
According to actual needs, the screw thread of general processing mostly is two, three, four-head, eight, and then described mark is a kind of in 1/8,1/4,1/3,1/2,2/3,3/4,7/8, can certainly exist other mark to adapt to specific demand.
Described detent mechanism comprises the positioning through hole that is opened on the described screw rod fixed block, these anchor clamps also comprise the pin that is plugged in the positioning through hole, the taper of described pin passes and is fastened between the thread of described screw rod in positioning through hole, the root of described pin is arranged on the spring base by elastic component, what described spring base can be dismantled is connected on the screw rod fixed block, and described elastic component is in compressive state.
These anchor clamps also comprise the guide pad of fixedlying connected with fixed block, are arranged on the slide block on the free end of described workpiece, and described slide block is slidingly arranged in the described guide pad.
Also offer annular groove on the described screw rod, the circumferential cross-section of described annular groove is shaped as the similar dihedral in tooth form angle to the thread of described screw rod.The effect of this annular groove mainly is to be used for the tip circle of grinding screw thread.
Another purpose of the present invention is to utilize above-mentioned mill external screw thread anchor clamps to provide the high grinding of a kind of grinding accuracy externally threaded method.
In order to achieve the above object, the technical solution adopted in the present invention is: the first step is connected to workpiece one end of screw rod, screw rod is plugged in the through hole of screw rod fixed block, projection is fastened between the thread of screw rod; In second step, rotating screw bolt also makes the relative screw rod fixed block of screw rod move, finish an external screw thread grinding along the spiral stitching.
When needs grinding multiple thread, require described mill external screw thread anchor clamps to comprise described projection on the hole wall that is arranged on through hole that to dismantle, described screw rod fixed block is provided with at least two detent mechanisms that are used to locate described projection, to the spacing between the described detent mechanism of small part is the integral multiple and branch several times sum of screw rod helical pitch, and this mark satisfies:
Wherein i is a natural number, and j is the natural number smaller or equal to i; Accordingly, described mill external screw thread method comprises: the first step is connected to workpiece one end of screw rod, screw rod is plugged in the through hole of screw rod fixed block, is positioned at projection in the above-mentioned detent mechanism and guarantees that this projection is fastened between the thread of screw rod; In second step, rotating screw bolt also makes the relative screw rod fixed block of screw rod move, finish an externally threaded grinding along the spiral stitching; The 3rd step, at least repeat following steps one time: projection is dismantled and be positioned in the another above-mentioned detent mechanism and guarantee that this projection is fastened between the thread of screw rod from above-mentioned detent mechanism, rotating screw bolt also makes the relative screw rod fixed block of screw rod move, finish another externally threaded grinding along the spiral stitching, and, in whole grinding process, the station that is used for the bistrique of grinding work piece remains unchanged.
Because it is higher that technique scheme utilization, the present invention have the precision of the screw thread that grinding goes out, and simple in structure, implement convenient, reduce cost.
Description of drawings
Fig. 1 is a stereogram of the present invention;
Fig. 2 A is a front view of the present invention, and wherein these anchor clamps are in the grinding state of screw thread tip circle;
Fig. 2 B is a front view of the present invention, and wherein these anchor clamps are in the grinding state of screw thread;
Wherein, 1, base, 2, guide pad, 3, slide block, 4, the screw rod fixed block, 41, first positioning through hole, 42, second positioning through hole, the 43, the 3rd positioning through hole, the 44, the 4th positioning through hole, 45, spring base, 46, spring, 47, annular groove, 5, pin, 6, screw rod, 7, workpiece, 8, bistrique.
The specific embodiment
A kind of mill external screw thread anchor clamps are used for the grinding of accurate screw rod and worm screw.
Referring to Fig. 1, Fig. 2 A, Fig. 2 B, these anchor clamps comprise the screw rod 6 that an end is connected with an end of workpiece 7 to be processed, the screw rod fixed block 4 that offers through hole, and described screw rod 6 activities are plugged in the described through hole.
Bearing of trend along screw rod 6 on the described screw thread fixed block 4 offers first positioning through hole 41, second positioning through hole 42, the 3rd positioning through hole 43, the 4th positioning through hole 44 successively.
Also offer an annular groove 47 in no externally threaded part on the described screw rod 6, the circumferential cross-section of described annular groove 47 is shaped as dihedral, and the tooth form angle of thread is similar on geometry principle on the shape of this dihedral and the screw rod 6.
These anchor clamps also comprise the pin 5 within that plugs in above-mentioned four positioning through hole, the tooth form angle of the thread on the taper of described pin 5 and the screw rod 6 and the circumferential cross-section shape of annular groove 47 are corresponding, the taper of described pin 5 passes and is fastened in the positioning through hole between the thread of (corresponding diagram 2A) in the annular groove 47 or screw rod 6 (corresponding diagram 2B), the root of described pin 5 is arranged on the spring base 45 by spring 46, what described spring base 45 can be dismantled is connected on the screw rod fixed block 4, and described spring 46 is in compressive state, then sells 5 taper and is stuck in the annular groove 47 more closely or between the thread of screw rod 6.
Below in conjunction with the grinding process of a three-start screw, the detailed structure to these anchor clamps, operation principle are introduced.
(a) the screw thread tip circle of grinder part 7.
Referring to Fig. 2 A, to sell 5 and be inserted in first through hole 41, spring base 45 will be fixed on the appropriate location of screw rod fixed block 4 adjusting screw(rod) 6, make the taper of pin 5 be stuck in the annular groove 47, because the taper of the elastic force effect pin 5 of spring 46 is fastened in the annular groove 47 more closely.
Adjust bistrique 8 to first tip circle stations, rotating screw bolt 6, because pin 5 is fastened in the annular groove 47 all the time, to the qualification of the motion state of screw rod 6, screw rod 6 relative screw rod fixed blocks 4 can only rotate, screw rod 6 drives workpiece 7 and rotates, finish the grinding of screw thread tip circle, bistrique 8 withdraws from the first tip circle station.
Bistrique 8 moves to other tip circle station again, in like manner finishes the grinding of many places tip circle.
(b) external screw thread of grinder part 7.
Referring to Fig. 2 B, on principle, what offered originally on the screw rod fixed block 4 is through hole, screw rod 6 can be plugged in this through hole in activity, yet, when the taper of pin 5 is fastened between the thread, screw rod 6 time just is subjected to the restriction of the taper of pin 5 in motion, can only spiral advances (perhaps retreating).When screw rod 6 spirals advance (perhaps retreating), just drive workpiece 7 spirals advance (perhaps retreating) thus finish grinding, in the process of grinding, bistrique 8 is in that bistrique 8 relative screw rod fixed blocks 4 remain static in station and screw rod 6 motion processes, and workpiece 7 (latter retreats) stroke that advances is just finished the grinding of workpiece 7 thread surface portions.In this kind method for grinding, workpiece 7 adds synthetic that circumference rotates relative to the helical trajectory of bistrique 8 and unconventional rectilinear motion, but disposablely directly obtains, so the precision of the screw thread that obtains is higher; And because the setting of this device, the screw of workpiece 7 is easy to realize that apparatus structure is simple.
The helical pitch of described screw rod 6 is identical with the helical pitch of workpiece 7, and the diameter of described screw rod 6 then can make things convenient for the user to operate, improve screw rod 6 running precisions greater than the diameter of workpiece 7.
How to finish the grinding of three-start screw part? in the present embodiment, the helical pitch of the helical pitch of described screw rod 6 and workpiece 7 is 7.5mm, distance between the axial line of first positioning through hole 41, second positioning through hole 42 is 20mm, and the distance between the axial line of second positioning through hole 42, the 3rd positioning through hole 43 is that the distance between the axial line of 10mm the 3rd positioning through hole 41, the 4th positioning through hole 42 is 10mm.
Finished after (a) step, at first will sell 5 takes out, is inserted in second positioning through hole 42 in first positioning through hole 41, spring base 45 is fixed on the appropriate location of screw rod fixed block 4, bistrique 8 moves to external screw thread station (corresponding to the state of Fig. 2 B), screw rod 6 drives stroke of workpiece 7 motions, finish the grinding of first head thread, bistrique 8 withdraws from station.
Then, spring base 45, pin 5 are unloaded, pin 5 plugs in the 3rd positioning through hole 42, spring base 45 is fixed on the appropriate location of screw rod fixed block 4, bistrique 8 moves to same external screw thread station again, because the distance between second positioning through hole 42, the 3rd positioning through hole 43 is 4/3 times (being equivalent to the helical pitch that workpiece 7 relative bistriques 8 have been offset 1/3 workpiece 7) of workpiece 7 helical pitches, then finish the grinding of second head thread on the right side of first head thread, bistrique 8 withdraws from station.
At last, to sell 5 plugs in the 4th positioning through hole 44, spring base 45 is fixed on the appropriate location of screw rod fixed block 4, bistrique 8 moves to same external screw thread station more again, because the distance between the 3rd positioning through hole 43, the 4th positioning through hole 44 is 4/3 times (being equivalent to the helical pitch that the relative again bistrique 8 of workpiece 7 has been offset 1/3 workpiece 7) of workpiece 7 helical pitches, then finishes the grinding of the three-start screw on the second head thread right side.
The whole external screw thread accurate grinding process of workpiece 7 finishes.
In like manner,, can also finish the grinding of two head threads, four-head screw thread, eight head threads etc., all by that analogy, repeat no more by the diverse location setting of positioning through hole.Wherein the motion of bistrique 8 is fairly simple, only need finish upper and lower motion---and arrive station, away from station, realize high-precision motion easily; And the positioning accuracy of workpiece 7 also guarantees easily, because the positional precision between the positioning through hole can guarantee, pin 5 is pressed on the threaded portion of screw rod 6 by spring 46, the position that at every turn regulates spring base 45 just is equivalent to the location between the multiple thread is accurately located, then screw rod 6 is accurately located, guaranteed then to pin 5, and can guarantee every head thread shape especially in the process of processing.In a word, this device can be realized the grinding of complicated accurate thread by comparatively simply installing, and meets or exceeds the grinding quality of complicated numerical control device.
These anchor clamps also comprise the guide pad 2 of fixedlying connected with fixed block 4, and the free end of described workpiece 7 is provided with slide block 3, and described slide block 3 is slidingly arranged in the described guide pad 2.3 pairs of workpiece 7 of slide block have played supporting role, and are stressed more steady when making workpiece 7 work.
The free end of described screw rod 6 also is provided with embossed portion or handwheel, makes things convenient for manual operation.
Claims (10)
1, a kind of mill external screw thread anchor clamps is characterized in that: comprise the screw rod (6) that an end is connected with an end of workpiece (7) to be processed, the screw rod fixed block (4) that offers through hole, described screw rod (6) activity is plugged in the described through hole,
The helical pitch of described screw rod (6) is identical with the helical pitch of workpiece (7);
Also be provided with between the thread that is fastened on screw rod (6) on the hole wall of described through hole and be used to limit the projection that the relative screw rod fixed block of thread (4) of screw rod (6) moves along the spiral stitching.
2, mill external screw thread anchor clamps according to claim 1, it is characterized in that: on the hole wall that is arranged on through hole that described projection can be dismantled, described screw rod fixed block (4) is provided with at least two detent mechanisms that are used to locate described projection, to the spacing between the described detent mechanism of small part is the integral multiple and branch several times sum of screw rod (6) helical pitch, and this mark satisfies:
3, mill external screw thread anchor clamps according to claim 2 is characterized in that: described mark is a kind of in 1/8,1/4,1/3,1/2,2/3,3/4,7/8.
4, according to claim 2 or 3 described mill external screw thread anchor clamps, it is characterized in that: described detent mechanism comprises the positioning through hole that is opened on the described screw rod fixed block (4), these anchor clamps also comprise the pin (5) that is plugged in the positioning through hole, the taper of described pin (5) passes and is fastened between the thread of described screw rod (6) in positioning through hole, the root of described pin (5) is arranged on the spring base (45) by elastic component, what described spring base (45) can be dismantled is connected on the screw rod fixed block (4), and described elastic component is in compressive state.
5, mill external screw thread anchor clamps according to claim 4, it is characterized in that: described elastic component is a spring.
6, mill external screw thread anchor clamps according to claim 1, it is characterized in that: the free end of described screw rod (6) also is provided with operating handle.
7, mill external screw thread anchor clamps according to claim 1, it is characterized in that: these anchor clamps also comprise the guide pad (2) of fixedlying connected with fixed block (4), be arranged on the slide block (3) on the free end of described workpiece (7), described slide block (3) is slidingly arranged in the described guide pad (2).
8, mill external screw thread anchor clamps according to claim 1 is characterized in that: also offer annular groove (47) on the described screw rod (6), the circumferential cross-section of described annular groove (47) is shaped as the similar dihedral in tooth form angle to the thread of described screw rod (6).
9, a kind of mill external screw thread method of mill external screw thread anchor clamps as claimed in claim 1, it is characterized in that: this method comprises
The first step, with workpiece (7) be connected to screw rod (6) an end, screw rod (6) is plugged in the through hole of screw rod fixed block (4), projection is fastened between the thread of screw rod (6);
In second step, rotating screw bolt (6) also makes the relative screw rod fixed block (4) of screw rod (6) move, finish an external screw thread grinding along the spiral stitching.
10, mill external screw thread method according to claim 9, it is characterized in that: described mill external screw thread anchor clamps comprise the described projection on the hole wall that is arranged on through hole that can dismantle, described screw rod fixed block (4) is provided with at least two detent mechanisms that are used to locate described projection, to the spacing between the described detent mechanism of small part is the integral multiple and branch several times sum of screw rod (6) helical pitch, and this mark satisfies:
, wherein i is a natural number, j is the natural number smaller or equal to i;
Described mill external screw thread method comprises
The first step, with workpiece (7) be connected to screw rod (6) an end, screw rod (6) is plugged in the through hole of screw rod fixed block (4), is positioned at projection in the above-mentioned detent mechanism and guarantees that this projection is fastened between the thread of screw rod (6);
In second step, rotating screw bolt (6) also makes the relative screw rod fixed block (4) of screw rod (6) move, finish an externally threaded grinding along the spiral stitching;
The 3rd step, at least repeat following steps one time: projection is dismantled and be positioned in the another above-mentioned detent mechanism and guarantee that this projection is fastened between the thread of screw rod (6) from above-mentioned detent mechanism, rotating screw bolt (6) also makes the relative screw rod fixed block (4) of screw rod (6) move, finish another externally threaded grinding along the spiral stitching
And in whole grinding process, the station that is used for the bistrique of grinding work piece remains unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101555346A CN101391326B (en) | 2008-10-08 | 2008-10-08 | Clamp for grinding external thread and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101555346A CN101391326B (en) | 2008-10-08 | 2008-10-08 | Clamp for grinding external thread and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101391326A true CN101391326A (en) | 2009-03-25 |
| CN101391326B CN101391326B (en) | 2010-07-07 |
Family
ID=40491943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101555346A Active CN101391326B (en) | 2008-10-08 | 2008-10-08 | Clamp for grinding external thread and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101391326B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514022A (en) * | 2011-09-27 | 2012-06-27 | 常州瑞择微电子科技有限公司 | Device for cutting polyfluoroalkoxy (PFA) spring |
| CN104308584A (en) * | 2014-10-29 | 2015-01-28 | 苏州华冲精密机械有限公司 | Lathe fixture for improving perpendicularity of axes of nuts and axes of threaded holes in nuts |
| CN104353912A (en) * | 2014-10-15 | 2015-02-18 | 池州市邦鼐机电科技有限公司 | Nut grinding and positioning device |
| CN108188875A (en) * | 2018-01-30 | 2018-06-22 | 金国泗 | A kind of precise ball screw forming equipment that grinding machine is coordinated to use |
| CN112440194A (en) * | 2019-08-27 | 2021-03-05 | 中国石油天然气股份有限公司 | Lead screw rust removal tool |
| CN112643150A (en) * | 2019-10-10 | 2021-04-13 | 安志飞 | Semi-automatic thread grinding device for lathe |
| CN114393466A (en) * | 2022-02-16 | 2022-04-26 | 沈阳 | Spring finish machining device |
-
2008
- 2008-10-08 CN CN2008101555346A patent/CN101391326B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514022A (en) * | 2011-09-27 | 2012-06-27 | 常州瑞择微电子科技有限公司 | Device for cutting polyfluoroalkoxy (PFA) spring |
| CN104353912A (en) * | 2014-10-15 | 2015-02-18 | 池州市邦鼐机电科技有限公司 | Nut grinding and positioning device |
| CN104308584A (en) * | 2014-10-29 | 2015-01-28 | 苏州华冲精密机械有限公司 | Lathe fixture for improving perpendicularity of axes of nuts and axes of threaded holes in nuts |
| CN108188875A (en) * | 2018-01-30 | 2018-06-22 | 金国泗 | A kind of precise ball screw forming equipment that grinding machine is coordinated to use |
| CN108188875B (en) * | 2018-01-30 | 2019-11-22 | 金国泗 | A kind of precise ball screw forming equipment that cooperation grinding machine uses |
| CN112440194A (en) * | 2019-08-27 | 2021-03-05 | 中国石油天然气股份有限公司 | Lead screw rust removal tool |
| CN112643150A (en) * | 2019-10-10 | 2021-04-13 | 安志飞 | Semi-automatic thread grinding device for lathe |
| CN114393466A (en) * | 2022-02-16 | 2022-04-26 | 沈阳 | Spring finish machining device |
| CN114393466B (en) * | 2022-02-16 | 2023-04-11 | 福州立洲弹簧有限公司 | Spring finish machining device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101391326B (en) | 2010-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101391326B (en) | Clamp for grinding external thread and method thereof | |
| CN102528171A (en) | Numerical-control efficient cycloid tooth-shaped grinding machine | |
| CN102248483B (en) | Automatic sanding fixture for industrial robot | |
| CN201291334Y (en) | External thread grinding clamp | |
| CN106001818A (en) | Universal angle head applicable to EDM machine tool | |
| CN102528666A (en) | Grinding wheel dresser | |
| CN113618365A (en) | Vertical knife mounting machine | |
| CN103084895A (en) | Turning fixture for gleason spiral bevel gear | |
| CN205765459U (en) | Numerical control roller external diameter and ball basal plane compound grinding machine | |
| CN105773323A (en) | Grinding machine | |
| CN102528614A (en) | Control method of non-circular ground finish profile accuracy | |
| CN102229128A (en) | Pipe positioning tool | |
| CN201283507Y (en) | Positioning apparatus for chamfering drill | |
| CN203509797U (en) | Hobbing cutter sharpening device | |
| CN203993551U (en) | A kind of screw grinder with skive automatic repariring equipment | |
| CN205342690U (en) | Tapering frock of polishing | |
| CN201189621Y (en) | Accessory of tool grinder | |
| CN103273143B (en) | Gear machine cylinder sleeve tooth Profile Machining recruitment grinding jig | |
| CN207982817U (en) | A kind of self-centering fixture | |
| CN109049168A (en) | A kind of clamping device for woodwork milling machine | |
| CN205968514U (en) | Roller gear terminal surface chamfered edge machine | |
| CN107052391B (en) | A kind of bias Double-end drill machine | |
| CN104440139A (en) | High-precision rotating table | |
| CN203304714U (en) | Tool grinder clamp for gear machine tool cylinder sleeve tooth form machining | |
| CN209255861U (en) | A kind of positioning device of Digitized manufacturing automated execution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |