CN105269415A - Mechanical machining process for screw tap - Google Patents
Mechanical machining process for screw tap Download PDFInfo
- Publication number
- CN105269415A CN105269415A CN201410341112.3A CN201410341112A CN105269415A CN 105269415 A CN105269415 A CN 105269415A CN 201410341112 A CN201410341112 A CN 201410341112A CN 105269415 A CN105269415 A CN 105269415A
- Authority
- CN
- China
- Prior art keywords
- screw tap
- tap
- tooth
- relief grinding
- processed
- 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
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a process for mechanically machining a common screw tap to a staggered tooth screw tap. The process is suitable for various converted thread machining machine tools. A machined screw tap acts an axial displacement correspondingly when one tooth of the machined screw tap is subjected to relief grinding. In the machining process, clamping of the staggered tooth screw tap is completed at a time by different side blades which conducts relief grinding on teeth of the machined screw tap left and right alternatively. According to the machining process, the production efficiency is improved; the cost and the management and maintenance cost of production equipment are reduced; the machining quality is improved; additional devices of the equipment are simple in structure and easy to manufacture.
Description
Technical field
The present invention relates to a kind of mechanical processing technique of processing staggered-tooth tap newly, this processing method is applicable on the regular screw threads machining tool after simple refit, and regular tap Relieving manufacturing is become staggered-tooth tap by clamped one time location.
Background technology
Through retrieval and market survey, do not process the equipment of staggered-tooth tap at present specially, screw grinder can only be utilized to process, its processing method is by regular tap every a sword lobe relief grinding once, be the screw tap of odd number for sword lobe number, each relief grinding is two side edges relief grinding simultaneously to a teeth groove, and is the screw tap of even number for sword lobe number, the then unidirectional side edge of each each tooth of relief grinding, the side edge of different directions will carry out twice relief grinding and just can machine.
Existing processing method has the following disadvantages:
1, each staggered-tooth tap just can need machine through twice relief grinding, and due to each tool setting difficulty, generally need carry out the relief grinding of different side edge respectively with two lathes, production efficiency is lower.
2, staggered-tooth tap is not participated in cutting in actual use by the side edge of relief grinding, its machining accuracy is without the need to too high, only need grind off suitable mill to measure, therefore the not high operation of actual requirement machining accuracy is real belongs to waste to carry out to utilize the lathe of this precision of screw grinder and costliness at present.
3, owing to using screw grinder, no matter the maintenance expense of machine tool expense or lathe is all higher, virtually adds the processing cost of product.
Summary of the invention
Main technical content of the present invention is: the thread cutting machine utilizing repacking, processed screw tap clamp is held in can do vertically left and right displacement top in, after the side edge of every relief grinding screw tap tooth side, the displacement of the corresponding mobile setting to the left or to the right of processed screw tap, left and right replaces the side edge not of the same name of each tooth of the processed screw tap of relief grinding, clamped one time completes the process of staggered-tooth tap, the half of thread angle of emery wheel used, by the pitch of processed screw tap, is chosen between 28 ° at 22 °.
The present invention to be achieved in that on relieving lathe the top and control device of additional special reciprocating motion type, screw tap clamp is held in top on, after driver plate drives the side edge of certain side of the complete tooth of the every relief grinding of processed screw tap, when screw tap chip pocket position is relative to emery wheel, identical with screw tap groove number and that position the is corresponding again contact that driver plate sets just lay a finger on an on-off type switch in control system, electromagnet is worked, pull shift fork, shift fork makes to be equipped with front top sliding sleeve and together to move to right a displacement limited along top axis direction, when after the complete next tooth of relief grinding, on driver plate, another contact can touch switch again, make electromagnet power-off, shift fork unclamps, processed screw tap oppositely movement immediately under the effect of tail centre spring force, be moved to the left a displacement limited, as long as set up the position of the position of each contact and the gag lever post of shift fork on driver plate,
To the relevant position of good contact relative to processed screw tap chip pocket, in the process of each tooth of relief grinding screw tap so successively, processed screw tap changes a position after just can producing a side edge of the complete tooth of every relief grinding relative to the position of emery wheel, realize clamped one time, continuous left and right replaces the side edge of the different flanks of relief grinding screw tap, completes the processing of staggered-tooth tap.
The invention has the advantages that: 1, no matter the staggered-tooth tap of even number or odd number sword lobe all can machine by clamped one time, improves production efficiency.
2, the management maintenance expense of production equipment expense and production equipment can be reduced with relieving lathe processing staggered-tooth tap.
3, tailstock movable axis puts the contact block that amesdial is housed, and when tail top moves left and right with processed screw tap, directly can read the displacement of processed screw tap with amesdial, makes that tool setting in process is easy also can monitor processing situation at any time, improves crudy.
4, the present invention takes the principle of the axial left and right trade-off of processed screw tap to process, and its attachment device structure is simply easy to manufacture.As made the trade-off of emery wheel left and right carry out relief grinding, then its complex structure, be difficult to realize.
5, the present invention is except for except relieving lathe, also can be used for other thread cutting machine of suitably repacking.
The present invention is more than 1.0 screw taps for pitch, and the half of thread angle of its lathe emery wheel is chosen between 28 ° at 22 °.
Accompanying drawing explanation
Fig. 1 is the present invention's process principle schematic diagram when processing staggered-tooth tap;
Fig. 2 is the order arrangement schematic diagram along processed screw tap lead angle direction relief grinding side edge.Wherein A representative is by mill side edge.
Detailed description of the invention
There is provided embodiments of the invention as follows by reference to the accompanying drawings:
The present invention as shown in Figure 1, primarily of taper-shank arbor 1, sliding sleeve 2, bearing pin 3, end face bearing 4, driver plate 5, front top 6, tail centre 7, contact block 8, slide-bar 9, support 10, electromagnet 11, shift fork 12, switch 13, gag lever post 14, screw rod 15, contact 16, ring 17, amesdial 18 forms, wherein, taper-shank arbor 1 is fixedly mounted in tapered bore of machine tool spindle, sliding sleeve 2 is slidably matched by feather key and taper-shank arbor 1, front top 6 are fixedly mounted in the taper hole of sliding sleeve 2, driver plate 5 is fixedly mounted on sliding sleeve 2, end face bearing 4 is arranged on sliding sleeve 2, bearing pin 3 is fixedly mounted on the annulus 17 in the middle of two end face bearings 4, contact 16 is fixedly mounted on driver plate 5, tail centre 7 is fixedly mounted in the taper hole of slide-bar 9, contact block 8 is fixed on slide-bar 9, support 10 is fixedly mounted on lathe bed surface, electromagnet 11 is fixedly mounted on the sidewall of support 10, shift fork 12 is contained between two sidewalls of support 10 by rotating shaft, the sidewall that switch 13 is fixed on support 10 keeps the position that can contact with the contact 16 on driver plate 5, gag lever post 14 and screw rod 15 are connected by nut and spacing " V " type groove on gag lever post 14 can adjust position up and down.
Operation principle of the present invention is such: processed screw tap clamp is held between front top 6 and tail centre 7, the slide-bar 9 that spring is housed makes tail centre 7 clamp processed screw tap and pressure is pushed to front top 6 simultaneously, sliding sleeve 2 is moved to the left, two end face bearings 4 are utilized to be clamped in ring on sliding sleeve 2 17 with sliding sleeve 2 for being rotatably assorted, ring 17 fixedly mounts two bearing pins 3 of 180 ° of being separated by, bearing pin 3 is rotatably assorted with the pin-and-hole of shift fork 12 upper end, sliding sleeve 2 is slidably matched with taper-shank arbor 1 and is connected by feather key and makes sliding sleeve 2 and taper-shank arbor 1 can do axial relative movement again by synchronous axial system, when processed cone with front top 6 and tail centre 7 and sliding sleeve 2 at tailstock slide-bar 9 spring with when being moved to the left, bearing pin 3 makes shift fork 12 upper end swing left, now, electromagnet 11 no power, the lower end "V"-block of shift fork 12 swings to the right and is close to the right of spacing " V " groove of gag lever post 14, the contact 16 with processed cutter blade number equal number driver plate 5 is equipped with, the position of contact 16 is uniform and corresponding with the chip pocket position of processed screw tap, therefore, when screw tap processed in process is under taper-shank arbor 1 and driver plate 5 drive, often rotate one week, while axial displacement pitch made by the relative screw tap of emery wheel, after the side edge of every relief grinding screw tap tooth, namely contact 16 touches switch 13 once, switch 13 on-off electricity, electromagnet 11 just controls shift fork 12, sliding sleeve 2 and front top 6 is produced correspondingly move left and right with screw tap groove number, one-time positioning can replace the processing that relief grinding completes staggered-tooth tap successively.Moved up and down by screw rod 15 adjustable limit bar 14, control the gap between " V " type groove and " V " type head of shift fork 12 lower end, thus control the oscillating quantity of shift fork 12, after setting gap, screw tap left and right displacement value is just determined, adjustment process contacts amesdial 18 by the contact block 8 be fixed on slide-bar 9, reads the size of shift value easily, to set up the gap width of command displacement amount.The no matter staggered-tooth tap of even number sword lobe or odd number sword lobe, all available said method, clamped one time machines.
Certainly, above-mentioned explanation is not limitation of the present invention, the present invention is also not limited to above-mentioned citing, those skilled in the art, in essential scope of the present invention, the change made, remodeling, add or replace, the technical staff that should belong to the industry of the present invention should understand, the present invention is not restricted to the described embodiments, what describe in above-described embodiment and description just illustrates principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. the mechanical processing technique of a screw tap, it is characterized in that: utilize tampered thread cutting machine, processed regular tap be clamped in can do vertically left and right displacement top in, after the side edge of every relief grinding screw tap tooth side, the displacement of the corresponding mobile setting to the left or to the right of processed screw tap, left and right replaces the different side edges of each tooth of the processed screw tap of relief grinding, clamped one time completes the process of staggered-tooth tap, and the half of thread angle of emery wheel used is chosen at 22 ° by the pitch of processed screw tap between 28 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341112.3A CN105269415A (en) | 2014-07-18 | 2014-07-18 | Mechanical machining process for screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341112.3A CN105269415A (en) | 2014-07-18 | 2014-07-18 | Mechanical machining process for screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105269415A true CN105269415A (en) | 2016-01-27 |
Family
ID=55139715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341112.3A Pending CN105269415A (en) | 2014-07-18 | 2014-07-18 | Mechanical machining process for screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105269415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564010A (en) * | 2016-11-11 | 2017-04-19 | 内蒙古航天红岗机械有限公司 | Relief-grinding clamp for relief angle of screw tap |
| CN110185792A (en) * | 2019-06-28 | 2019-08-30 | 一汽解放汽车有限公司 | A kind of speed changer and power assisted gearshift device are transferred box assembly |
-
2014
- 2014-07-18 CN CN201410341112.3A patent/CN105269415A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564010A (en) * | 2016-11-11 | 2017-04-19 | 内蒙古航天红岗机械有限公司 | Relief-grinding clamp for relief angle of screw tap |
| CN106564010B (en) * | 2016-11-11 | 2021-05-14 | 内蒙古航天红岗机械有限公司 | Relief grinding clamp for relief angle of screw tap |
| CN110185792A (en) * | 2019-06-28 | 2019-08-30 | 一汽解放汽车有限公司 | A kind of speed changer and power assisted gearshift device are transferred box assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204339573U (en) | Screw rod grinding machine | |
| CN103111673A (en) | Axial double-helix-surface semi-automatic milling machine | |
| CN103009065A (en) | Polygonal compound turn-milling machining device | |
| CN103203491B (en) | Method for processing external spiral slot with large screw pitch by numerically controlled lathe and process device | |
| CN105269415A (en) | Mechanical machining process for screw tap | |
| CN203992689U (en) | A kind of device that utilizes engine lathe high efficiency processing steep-pitch thread | |
| CN204321597U (en) | A kind of numerical-control turn-milling integrated machine tool | |
| CN204711219U (en) | A kind of double-headstock numerically controlled lathe adjustable blade holders | |
| CN109986418A (en) | A kind of mechanical processing technique of screw tap | |
| CN202934343U (en) | Polygon composite turn-milling machining device | |
| CN102091832A (en) | Machining process for screw tap with offset teeth | |
| CN1118296A (en) | Mechemic process for screw tap | |
| CN203343871U (en) | Large single crystal grinding device | |
| CN202825264U (en) | Tool for machining bevels on milling machine | |
| CN104827306A (en) | Crossed slider third axis set mechanism matched with positive-axis mechanism on numerical control turn milling main shaft box moving machine | |
| CN203993551U (en) | A kind of screw grinder with skive automatic repariring equipment | |
| CN106808323A (en) | A kind of mechanical processing technique of screw tap | |
| CN204397551U (en) | A kind of burr removes machine | |
| CN104416465A (en) | Novel numerical control grinding wheel dressing device | |
| CN204725207U (en) | The 3rd axle group structure in scheming is walked in a kind of numerical control rip cutting | |
| CN203779609U (en) | Bamboo chip planing and machining equipment | |
| CN103862333A (en) | Taper-shank slotting cutter grinding device | |
| CN203900496U (en) | Regular-polygon turning device | |
| CN203622101U (en) | Taper shank slotting cutter grinding device | |
| CN102632301B (en) | Process method for processing longitudinal shift cone gear on vertical milling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |