CN102814437A - Method for processing internal thread of pole column - Google Patents
Method for processing internal thread of pole column Download PDFInfo
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- CN102814437A CN102814437A CN2012102817821A CN201210281782A CN102814437A CN 102814437 A CN102814437 A CN 102814437A CN 2012102817821 A CN2012102817821 A CN 2012102817821A CN 201210281782 A CN201210281782 A CN 201210281782A CN 102814437 A CN102814437 A CN 102814437A
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Abstract
The invention discloses a method for processing the internal thread of a pole column; and in the method, the internal thread of pole column part id processed by extruding a screw tap by axially rotating and feeding, and extruding and tapping the thread on a numerical control machine tool, a numerical control turning machine or a numerical control milling machine. The method has the beneficial effects that non-cutting processing is realized; the extruded screw tap is not easily broken, has high durability and can be processed and formed at one time; and the processing efficiency is high, the surface quality of the thread is good, the consistency is good, and the processing is stable and reliable.
Description
Technical field
The present invention relates to a kind of processing method of pole internal thread, belong to field of machining.
Background technology
In existing mechanical process technique to pole part internal thread, process commonly used is to utilize the internal threading cutter, radial feed, and repeatedly screw thread processing is carried out in circulation.Common screw thread specification is M8, is a kind of typically blind threaded, and material is copper, T2 material, the very sticking cutter of work in-process.Add man-hour in turning, the speed of mainshaft can only be controlled at 600r/min-800r/min, though be High Speed Machining; But because the sticking cutter of material; Work in-process is only programmed just needs about 30 sections procedure, belongs to little feeding, repeatedly the machining process of processing.Moreover, the pole part is when processing M8-6H screw thread, and because of this screw thread is blind threaded, copper scale is difficult for discharging; When the cutted thread procedure moves to 15 sections, will stop the numerical control device main shaft and rotate, blow out the copper scale that deposits in the thread Pilot hole with high pressure air rifle, and then start the screw thread procedure; If do not clear up the copper scale of thread Pilot hole deposition immediately, also can cause thread turning cutter tipping or fracture.Need 2min process time with this technological method for processing Internal Threading, working (machining) efficiency is low, and the cutter changing frequency is high, and operator's labour intensity is big, and therefore, this method is not suitable for pole part processing in enormous quantities.
Also having a kind of pole female thread machining method at present is the processing method of attacking the system screw thread, and this method can only be controlled at 50r/min-200r/min through test speed, and the screw tap break frequence is high, does not meet needs of production.Because this pole part internal thread has two characteristics: the one, blind threaded, the 2nd, material is a copper T2 material.Softer, the sticking cutter of this material.When the system internal thread was attacked in employing, copper scale was wrapped in the screw tap chip area fully, and cutting fluid can not be cooled off immediately, and in the continuous swivel feeding of screw tap, powerful cutting resistance cause screw tap to fracture, so that part is scrapped; Because pole part internal thread is blind threaded, cooling fluid can not be infiltrated the screw tap front end immediately again, and screw tap front end temperature extremely speed heats up; Cause the screw tap system of attacking to add man-hour, poor because of the copper material heat-sinking capability, the copper scale that processes is tightly packed in chip area; So that the screw tap locking, final screw tap twists off.Just can process one though this method is processed several seconds kinds of conventional steel part, its processing cost is high, is inappropriate for processing pole part.
Chinese patent ZL201010524769.5 discloses a kind of reducing selections processing method of inner screw thread copper pipe, has adopted reducing to revolve to contract and revolved a kind of inner screw thread copper pipe processing method of roller core extruding.This processing method is applicable to the inner surface screw thread of processing copper pipe tubing, is not suitable for processing the pole blind hole internal thread.
Chinese patent ZL97107196.9 discloses a kind of threading tool and processing method thereof of rolling compound thread, and the threading tool surface of the rolling compound thread that relates to is provided with the screw thread of two kinds of different rotation directions simultaneously, and the thread crest of two kinds of screw threads is intersected each other.This method must be fit to threading, and be not suitable for machining internal thread with compound thread roller thread-rolling screw instrument blank to obtain rolling compound thread.
Summary of the invention
For solving the technical problem that exists in the prior art, the invention provides and solve the blind threaded chip removal problem of pole part, and can improve the processing method of a kind of pole internal thread of pole part internal thread production efficiency.
The present invention is achieved through following technical scheme.
A kind of processing method of pole internal thread is taked axial swivel feeding, and the mode of system screw thread is attacked in extruding, by numerical control device lathe, milling machine or a commentaries on classics bed synchro-feed function, with thread forming tap the pole part is carried out the internal thread tapping; Rotating speed is controlled at 150r/min ~ 250r/m, and be 4 ~ 8 seconds process time, obtains the pole internal thread at last.
The present invention is used to process the internal thread of 11 ~ 15mm.
Compare with the process technology of existing pole internal thread, the present invention changes the machining process of existing cut internal thread axial swivel feeding into, pushes the processing method of attacking the system internal thread; Adopt the rotation extrusion tapping, the time processing moulding.When utilizing the present invention to process pole part internal thread, working (machining) efficiency is high, only need the time in 5 seconds just can accomplish the processing to the pole part, and the internal thread intensity that extrusion process is come out is good, and surface quality is high, at the bottom of the labor strength.Adopt the present invention, in process, can not produce copper scale, also can not cause screw tap to fracture because cooling is insufficient.The present invention is applicable to processing U.S. standard screw thread, inch screw thread, metric thread, MJ screw thread, is suitable for the processing blind hole screw thread most; Realized chipless machining; Thread forming tap is frangible, durability height not, but the time processing moulding; Working (machining) efficiency is high, and the thread surface quality is good, high conformity, and processing is stable, reliable.
Reference numeral
Fig. 1 is a kind of pole design of part sketch map of the present invention China preprocessing;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the structural representation of thread forming tap of the present invention;
Among the figure: 1-pole part, 2-thread forming tap.
The specific embodiment
Further describe technical scheme of the present invention below in conjunction with embodiment, but require the scope of protection to be not limited to said.
In Digit Control Machine Tool, import procedure, pole part 1 and thread forming tap 2 are installed, behind the startup Digit Control Machine Tool procedure; With axial swivel feeding; The mode of system screw thread is attacked in extruding, by numerical control device lathe synchro-feed function, carries out the internal thread tapping with 2 pairs of pole parts of thread forming tap 1; Rotating speed is controlled at 150r/min, and be 4 seconds process time.
Embodiment 2
In CNC milling machine, import procedure, pole part 1 and thread forming tap 2 are installed, behind the startup CNC milling machine procedure; With axial swivel feeding; The mode of system screw thread is attacked in extruding, by numerical control device lathe synchro-feed function, carries out the internal thread tapping with 2 pairs of pole parts of thread forming tap 1; Rotating speed is controlled at 200r/m, and be 6 seconds process time.
Embodiment 3
In numerical control commentaries on classics bed, import procedure, pole part 1 and thread forming tap 2 are installed, after tool machining program is changeed in the startup numerical control; With axial swivel feeding; The mode of system screw thread is attacked in extruding, by numerical control device lathe synchro-feed function, carries out the internal thread tapping with 2 pairs of pole parts of thread forming tap 1; Rotating speed is controlled at 250r/m, and be 8 seconds process time.
Claims (2)
1. the processing method of a pole internal thread; It is characterized in that: take axial swivel feeding; The mode of system screw thread is attacked in extruding, by numerical control device lathe, milling machine, commentaries on classics bed synchro-feed function, with thread forming tap (2) pole part (1) is carried out the internal thread tapping; Rotating speed is controlled at 150r/min ~ 250r/m, and be 4 ~ 8 seconds process time, obtains the pole internal thread at last.
2. the processing method of a kind of pole internal thread according to claim 1 is characterized in that: the internal thread that is used to process 11 ~ 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102817821A CN102814437A (en) | 2012-08-08 | 2012-08-08 | Method for processing internal thread of pole column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102817821A CN102814437A (en) | 2012-08-08 | 2012-08-08 | Method for processing internal thread of pole column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102814437A true CN102814437A (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102817821A Pending CN102814437A (en) | 2012-08-08 | 2012-08-08 | Method for processing internal thread of pole column |
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| CN (1) | CN102814437A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1039627A1 (en) * | 1982-01-14 | 1983-09-07 | Научно-Производственное Объединение По Технологии Машиностроения "Цниитмаш" | Apparatus for working interior threaded surface of articles |
| SU1166874A2 (en) * | 1983-03-31 | 1985-07-15 | Предприятие П/Я А-1614 | Tool for rolling internal thread |
| CN2564280Y (en) * | 2002-08-30 | 2003-08-06 | 崔殿臣 | Punching and threading machine |
| CN1775440A (en) * | 2005-12-06 | 2006-05-24 | 张有龙 | Packaging container steel bucket sealer helicoidal internal thread cold-extrusion shaping method |
| CN101660562A (en) * | 2008-08-27 | 2010-03-03 | 本田技研工业株式会社 | Nut, female thread machining device and female thread machining method |
| CN102039352A (en) * | 2009-10-23 | 2011-05-04 | 岩井金属(美国)有限公司 | Manufacturing method of mounting fitting with cap-shaped nut and tap tool used for the method |
-
2012
- 2012-08-08 CN CN2012102817821A patent/CN102814437A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1039627A1 (en) * | 1982-01-14 | 1983-09-07 | Научно-Производственное Объединение По Технологии Машиностроения "Цниитмаш" | Apparatus for working interior threaded surface of articles |
| SU1166874A2 (en) * | 1983-03-31 | 1985-07-15 | Предприятие П/Я А-1614 | Tool for rolling internal thread |
| CN2564280Y (en) * | 2002-08-30 | 2003-08-06 | 崔殿臣 | Punching and threading machine |
| CN1775440A (en) * | 2005-12-06 | 2006-05-24 | 张有龙 | Packaging container steel bucket sealer helicoidal internal thread cold-extrusion shaping method |
| CN101660562A (en) * | 2008-08-27 | 2010-03-03 | 本田技研工业株式会社 | Nut, female thread machining device and female thread machining method |
| CN102039352A (en) * | 2009-10-23 | 2011-05-04 | 岩井金属(美国)有限公司 | Manufacturing method of mounting fitting with cap-shaped nut and tap tool used for the method |
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Application publication date: 20121212 |
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| RJ01 | Rejection of invention patent application after publication |