CN103658877A - Tapping device - Google Patents
Tapping device Download PDFInfo
- Publication number
- CN103658877A CN103658877A CN201310610314.9A CN201310610314A CN103658877A CN 103658877 A CN103658877 A CN 103658877A CN 201310610314 A CN201310610314 A CN 201310610314A CN 103658877 A CN103658877 A CN 103658877A
- Authority
- CN
- China
- Prior art keywords
- screw tap
- cutter
- guide sleeve
- bar
- knife bar
- 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 tapping device and belongs to the technical field of metal machining. The tapping device comprises a screw tap cutter bar and a cutter holder guide sleeve. The screw tap cutter bar is in clearance fit with the cutter holder guide sleeve. Due to the fact that the screw tap cutter bar is in clearance fit with the cutter holder guide sleeve, when a screw cap completes tapping, during cutter retracting, interference between the screw tap and a workpiece can be avoided due to clearance between the screw tap cutter bar and the cutter holder guide sleeve, work efficiency is increased greatly, fast cutter retracting can be achieved, and machining quality of the workpiece can be increased. As further modification, the outer periphery is partially flattened through milling, a retaining block is disposed at the corresponding position of the cutter seat guide sleeve, and the screw tap cutter rod can only move axially and cannot rotate.
Description
Technical field
The invention belongs to metalworking technology field, relate in particular to a kind of chasing bar.
Background technology
Since machinery tapping is market-oriented, light, flexible, efficient and have advantages of that other similar devices cannot replace, and is subject to users' love deeply with it.It has avoided the limitation of drilling machine or hand tapping, and save time, laborsaving, be difficult for not frangibility etc. of rotten tooth, screw tap, its outstanding feature is subject to user's extensive favorable comment and employing.Be applicable to all machine industries.
Present turret lathe chasing bar, what screw tap knife bar and lathe knife seat guide pin bushing adopted is that gapless coordinates, and after the tapping of screw tap axial feed completes, when withdrawing, often interferes with processing work, causes bad tooth, production efficiency low.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of rapid return, chasing bar that workpiece crudy is good.
For solving the problems of the technologies described above, the technical solution used in the present invention is, a kind of chasing bar, comprises screw tap knife bar and tool rest guide pin bushing, and described screw tap knife bar and described tool rest guide pin bushing are matched in clearance.
Chasing bar of the present invention, described screw tap knife bar and described tool rest guide pin bushing adopt matched in clearance, after tap tapping completes, when withdrawing, because leave gap between screw tap knife bar and tool rest guide pin bushing, screw tap and workpiece can not interfere, thereby have greatly improved operating efficiency, reach the beneficial effect of rapid return, raising workpiece crudy.
As the present invention, further improve, the local milling of outer circumference surface of described screw tap knife bar is flat, in the corresponding position of described tool rest guide pin bushing, block is housed, and screw tap knife bar can only be axially moved and can not rotate.
Accompanying drawing explanation
Fig. 1 is chasing bar cross-sectional view of the present invention;
Fig. 2 is A-A generalized section in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is made and being further illustrated.
As shown in the figure, chasing bar of the present invention comprises screw tap 1, holding screw 2, screw tap knife bar 3, turret lathe tool rest 5 and tool rest guide pin bushing 6, screw tap 1 and 3 assemblings of screw tap knife bar, fastening by holding screw 2, the screw tap cutter group assembling is inserted in the tool rest guide pin bushing 6 on turret lathe tool rest, screw tap knife bar 3 be matched in clearance with tool rest guide pin bushing 6, and as preferably, the part milling of the outer circumference surface of screw tap knife bar is flat, in the corresponding position of described tool rest guide pin bushing, block 4 is housed, it can only be moved axially can not rotate.
During work, machine tool chief axis rotates, and screw tap knife bar 3 is made the rectilinear motion of axial feed, and screw tap cuts on instrument, after tapping completes, machine tool chief axis reversion, screw tap knife bar 3 is along moving as withdrawing in the other direction, because screw tap knife bar 3 is matched in clearance with tool rest guide pin bushing, when screw tap exits from processing work, can not interfere with processing work, make the screw thread on processing work intact, improve production efficiency simultaneously yet.
As preferably, the axial minimum range L between described block and screw tap knife bar boss should be greater than the degree of depth of workpiece to be processed screw thread, guarantees that screw tap exits completely from workpiece to be processed.
The description of above embodiment is comparatively concrete, detailed; but can not therefore be interpreted as the restriction to this patent scope; it should be noted that; for the person of ordinary skill of the art; without departing from the inventive concept of the premise; can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (3)
1. a chasing bar, comprises screw tap knife bar and tool rest guide pin bushing, it is characterized in that: described screw tap knife bar and described tool rest guide pin bushing are matched in clearance.
2. chasing bar according to claim 1, is characterized in that: the local milling of outer circumference surface of described screw tap knife bar is flat, in the corresponding position of described tool rest guide pin bushing, block is housed.
3. chasing bar according to claim 2, is characterized in that: the axial minimum range between described block and screw tap knife bar boss is greater than the degree of depth of workpiece to be processed screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610314.9A CN103658877A (en) | 2013-11-27 | 2013-11-27 | Tapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610314.9A CN103658877A (en) | 2013-11-27 | 2013-11-27 | Tapping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103658877A true CN103658877A (en) | 2014-03-26 |
Family
ID=50298329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310610314.9A Pending CN103658877A (en) | 2013-11-27 | 2013-11-27 | Tapping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103658877A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB739227A (en) * | 1953-12-09 | 1955-10-26 | Prototyp Werke G M B H | Screw-tapping apparatus |
| GB1066485A (en) * | 1963-08-16 | 1967-04-26 | Derek Edwin Fitton | A method of producing screw-threaded components |
| JPS5590227A (en) * | 1978-12-28 | 1980-07-08 | Yukimasa Hida | Tap supporter |
| CN201124277Y (en) * | 2007-12-19 | 2008-10-01 | 上海东方泵业(集团)有限公司 | Clamping head for thread machining |
| CN202185653U (en) * | 2011-07-13 | 2012-04-11 | 东风模具冲压技术有限公司 | Telescopic tapping clamp for machine |
| CN203696165U (en) * | 2013-11-27 | 2014-07-09 | 镇江市大兴机械制造有限公司 | Tapping device |
-
2013
- 2013-11-27 CN CN201310610314.9A patent/CN103658877A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB739227A (en) * | 1953-12-09 | 1955-10-26 | Prototyp Werke G M B H | Screw-tapping apparatus |
| GB1066485A (en) * | 1963-08-16 | 1967-04-26 | Derek Edwin Fitton | A method of producing screw-threaded components |
| JPS5590227A (en) * | 1978-12-28 | 1980-07-08 | Yukimasa Hida | Tap supporter |
| CN201124277Y (en) * | 2007-12-19 | 2008-10-01 | 上海东方泵业(集团)有限公司 | Clamping head for thread machining |
| CN202185653U (en) * | 2011-07-13 | 2012-04-11 | 东风模具冲压技术有限公司 | Telescopic tapping clamp for machine |
| CN203696165U (en) * | 2013-11-27 | 2014-07-09 | 镇江市大兴机械制造有限公司 | Tapping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |