CN104384952A - Lathe screw tap fixture - Google Patents
Lathe screw tap fixture Download PDFInfo
- Publication number
- CN104384952A CN104384952A CN201410474815.3A CN201410474815A CN104384952A CN 104384952 A CN104384952 A CN 104384952A CN 201410474815 A CN201410474815 A CN 201410474815A CN 104384952 A CN104384952 A CN 104384952A
- Authority
- CN
- China
- Prior art keywords
- inner slide
- screw tap
- tap
- outer support
- support housing
- 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
- 238000010079 rubber tapping Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 description 12
- 238000003754 machining Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G3/00—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2210/00—Details of threads produced
- B23G2210/04—Internal threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
- B23G2240/32—Threading devices designed to be mounted in the tailstock of a lathe
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention relates to a lathe screw tap fixture. The fixture comprises an outer support shell, an inner slide block embedded in the outer support shell, a double-head cone rod embedded in the inner slide block, and a screw tap chuck fixedly connected with the double-head cone rod, wherein the inner slide block slides in the outer support shell to drive the double-head cone rod to move in the front-back direction; and the tapping depth of the screw tap chuck is controlled. Compared with a prior art, the lathe screw tap fixture has such advantages as precise control of the tapping depth.
Description
Technical field
The present invention relates to a kind of machining equipment, especially relate to a kind of Lathe screw tap fixture.
Background technology
Lathe process is the Main Means of processing revolving parts, and in Lathe screw tap process, for the tapping at Central of the parts screwed hole, the particularly tapping of blind hole depthkeeping degree, Lathe screw tap fixture directly determines operating efficiency and the precision of the processing of this screw tap.Due to the feeding depth with the naked eye judging screw tap directly cannot be made, at whole tapping process, the conventional tapping method adopted is must by the operating process of circulation, namely tool feeding tapping-cutter exits screw tap-use measurer and carries out detecting-continue feeding tapping, and this cyclic process is until tapping depth meets instructions for use.Therefore, use conventional tapping method to carry out the location of tapping depth to Central of the parts screwed hole, its tapping depth is difficult to accurately location and control, and difficulty of processing is large, and require higher to operator, operating efficiency is lower, and product defect rate is higher.
Such as application number be 201210448824.6 Chinese patent disclose a kind of internal thread machining fixture and processing method thereof, comprise knife bar, in knife bar, offer knife bar cavity; In knife bar cavity, chuck is installed; Chuck is made up of chuck head and jacket body, and chuck head is positioned at outside knife bar, is socketed on knife bar cavity in jacket body; Between chuck head and knife bar end face, spring is installed, between chuck head and knife bar cavity, extension spring is installed; Knife bar offers sliding tray, in sliding tray, sliding pin is installed.Although this method solve the problem of machining internal thread on engine lathe, it cannot accurate working depth.
Summary of the invention
Object of the present invention is exactly to overcome the defect and the Lathe screw tap fixture that provides a kind of tapping depth to determine that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of Lathe screw tap fixture, this fixture comprises: outer support housing; Inner slide, this inner slide is embedded in outer support housing; Double end cone bar, this double end cone bar is embedded in inner slide; Tap chuck, this tap chuck and double end are bored bar and are fixedly connected with;
The interior slip of support housing outside of described inner slide, and then drive double end cone bar to seesaw, and control the tapping depth of tap chuck.
Described inner slide is provided with bolt, and described outer support housing is provided with locating slot, and described bolt slides in locating slot.
Described outer support housing is also provided with the scale being used to indicate inner slide position.
Described fixture also comprises spring, and one end of described spring is connected with inner slide, and the other end is connected with outer support housing;
Described spring makes inner slide and double end bore rod locking, and then prevents tap chuck from rotating.
Described tap chuck is provided with screw tap.
Compared with prior art, the present invention has the following advantages:
1) structure is simple, and cost is low, drastically increases production efficiency.
2) bolt and locating slot can control tapping depth, realize the tapping depth that cutter primary feed reaches required.
3) scale accurately can locate working depth, improves the machining accuracy of tap tapping.
4) spring can improve the frictional force between double end cone bar and inner slide, thus overcomes the moment of torsion between workpiece and screw tap, and can automatically terminate screw tap locking state when completing setting tapping depth, prevents unexpected generation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is outer support shell structure schematic diagram;
Fig. 4-Fig. 7 is the concrete operation step schematic diagram adopting tapping workpiece of the present invention;
Wherein: 1, tap chuck, 2, double end cone bar, 3, inner slide, 4, outer support housing, 5, spring, 6, Workpiece clamping head, 7, lathe tailstock.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
A kind of Lathe screw tap fixture, as shown in figures 1 and 3, this fixture comprises:
Outer support housing 4;
Inner slide 3, this inner slide 3 is embedded in outer support housing 4;
Double end cone bar 2, this double end cone bar 2 is embedded in inner slide 3;
Tap chuck 1, this tap chuck 1 and double end are bored bar 2 and are fixedly connected with.
The inner slide 3 interior slip of support housing 4 outside, and then drive double end cone bar 2 to seesaw, and control the tapping depth of tap chuck 1.
Inner slide 3 and double end bore bar 2, and the connection that tap chuck 1 and double end bore bar 2 all adopts conical surface reinforcement structure.
Wherein, the connection that tap chuck 1 and double end bore bar 2 uses standard mohs tapered bore (tapering 1: 20); And inner slide 3 and double end to bore the taper hole taper design that bar 2 uses be about 1: 18.
As shown in Figures 2 and 3, inner slide 3 is provided with bolt 31, and outer support housing 4 is provided with locating slot 41, and bolt 31 slides in locating slot 41.
Outer support housing 4 is also provided with the scale 42 being used to indicate inner slide 3 position.
Tap chuck 1 is provided with screw tap 11.
Fixture also comprises spring 5, and one end of spring 5 is connected with inner slide 3, and the other end is connected with outer support housing 4, and double end bores bar 2 when carrying out tapping because the effect and inner slide 3 that are subject to spring 5 compress.Inner slide conical surface transmitting torque can be locked by taper hole self-servo action, and the moment that screw tap 11 bears can be overcome; Screw tap 11 is when tapping simultaneously, can keep locking on self axial-rotation direction.
Such as, when tapping, the spring 2 at screw tap 11 rear provides the thrust of more than 500N, steel surface coefficient of friction is 0.15-0.18, then by conical surface reinforcement structure, when taper hole tapering is 1: 20 time, the average pressure that its contact surface produces is about 10000N, conical surface average friction force is about 1800N, then the static friction moment of torsion that can provide is about 32Nm; When tapered hole is 1: 18, the static friction moment of torsion that can provide is about 29Nm (taper hole nominal diameter elects 20mm as).
And when using conventional cutting tap tapping, the moment of torsion provided needed for it is MD=0.25P
2ksdl/1000.Can maximum screw tap 11:M12 × 1.75 of clamping for 13mm screw tap clamp 1, material 45#, uses cut tap 11 tapping required torque: MD=0.25P
2ksdl/1000=0.251.75
2250012/1000 ≈ 23Nm.
Therefore this structure enough overcomes below M12 conventional cutting screw tap 11 making with lubricator to the moment of torsion produced during common used material tapping.
For certain type workpiece through-hole screwed hole, determining tapping depth is 30mm.The method of tapping workpiece of the present invention is adopted to comprise following operating procedure:
Lathe tailstock installs screw tap clamp, and the tapping depth (30mm) required for technique, rotate tail stock for machine tool handwheel, until screw tap head touches surface of the work.
Continue to rotate tailstock handwheel, under support housing 4 and the extruding of inner slide 3 outside of the spring 5 in screw tap clamp, compressive deformation occurs, move after causing bolt 31, until scale 42 indicates required tapping depth (30mm).Now, it is normal pressure that the thrust due to spring 5 makes double end bore bar 2 with inner slide 3 conical surface, causes double end to bore bar 2 and is locked in inner slide 3 conical surface and cannot rotating on self axial direction, as shown in Figure 4.
Locking tailstock handwheel, according to lathe screwing operation concrete technology required by rotating speed start lathe spindle, under the effect of spring 5, screw tap 11 enter work-piece tapping and march forward to, until bolt 31 returns to zero graduation line place, as shown in Figure 5.
When bolt 31 returns to zero graduation line place, spring 5 is locked in zero-bit by bolt 31.Now, because the pressure between double end cone bar 2 and inner slide 3 conical surface is zero, double end cone bar 2 departs from inner slide 3 and issues to be conigenous in the drive of screw tap and turns, and stops the further feeding of screw tap, thus completes the tapping operation in through hole whorl hole, as shown in Figure 6.
Lathe is shut down, and unclamps the locking of lathe tail folder, exits tail folder backward, as shown in Figure 7.
Lathe spindle reversely rotates, and exits screw tap 11 and tap chuck 1.The tapping process that tapping depth is decided to be the through hole whorl hole of 30mm all completes.
Claims (5)
1. a Lathe screw tap fixture, is characterized in that, this fixture comprises:
Outer support housing;
Inner slide, this inner slide is embedded in outer support housing;
Double end cone bar, this double end cone bar is embedded in inner slide;
Tap chuck, this tap chuck and double end are bored bar and are fixedly connected with;
The interior slip of support housing outside of described inner slide, and then drive double end cone bar to seesaw, and control the tapping depth of tap chuck.
2. a kind of Lathe screw tap fixture according to claim 1, it is characterized in that, described inner slide is provided with bolt, and described outer support housing is provided with locating slot, and described bolt slides in locating slot.
3. a kind of Lathe screw tap fixture according to claim 2, is characterized in that, described outer support housing is also provided with the scale being used to indicate inner slide position.
4. a kind of Lathe screw tap fixture according to claim 1, it is characterized in that, described fixture also comprises spring, and one end of described spring is connected with inner slide, and the other end is connected with outer support housing;
Described spring makes inner slide and double end bore rod locking, and then prevents tap chuck from rotating.
5. a kind of Lathe screw tap fixture according to claim 1, it is characterized in that, described tap chuck is provided with screw tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474815.3A CN104384952B (en) | 2014-09-17 | 2014-09-17 | A kind of Lathe screw tap fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474815.3A CN104384952B (en) | 2014-09-17 | 2014-09-17 | A kind of Lathe screw tap fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104384952A true CN104384952A (en) | 2015-03-04 |
| CN104384952B CN104384952B (en) | 2016-11-09 |
Family
ID=52602959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410474815.3A Expired - Fee Related CN104384952B (en) | 2014-09-17 | 2014-09-17 | A kind of Lathe screw tap fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104384952B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213616A (en) * | 2018-03-09 | 2018-06-29 | 浙江理工大学 | A kind of tapping auxiliary device of band lubrication and scale function |
| CN111156348A (en) * | 2020-03-18 | 2020-05-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Strenghthened type rigidity jib with tensile instruction function |
| CN117086666A (en) * | 2023-10-17 | 2023-11-21 | 中国科学院工程热物理研究所 | Multi-surface switching clamping tool for tap machining |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467277A (en) * | 1977-11-07 | 1979-05-30 | Mitsubishi Metal Corp | Tap holder |
| JPS58196946A (en) * | 1982-05-10 | 1983-11-16 | Toyoda Autom Loom Works Ltd | Locking structure for stopping turning of attaching/ detaching mechanism of cutter or tool, etc. |
| CN202291713U (en) * | 2011-09-23 | 2012-07-04 | 鞍钢重型机械有限责任公司 | Tapping device for common boring lathe |
| CN202655744U (en) * | 2012-05-15 | 2013-01-09 | 大连职业技术学院 | Tapping toolbar for lathe |
| CN202752848U (en) * | 2012-06-27 | 2013-02-27 | 河南航天精工制造有限公司 | Screw tap clamp for lathe |
| CN203018863U (en) * | 2012-12-29 | 2013-06-26 | 重庆博森电气（集团）有限公司 | Lathe screw tap clamp |
-
2014
- 2014-09-17 CN CN201410474815.3A patent/CN104384952B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467277A (en) * | 1977-11-07 | 1979-05-30 | Mitsubishi Metal Corp | Tap holder |
| JPS58196946A (en) * | 1982-05-10 | 1983-11-16 | Toyoda Autom Loom Works Ltd | Locking structure for stopping turning of attaching/ detaching mechanism of cutter or tool, etc. |
| CN202291713U (en) * | 2011-09-23 | 2012-07-04 | 鞍钢重型机械有限责任公司 | Tapping device for common boring lathe |
| CN202655744U (en) * | 2012-05-15 | 2013-01-09 | 大连职业技术学院 | Tapping toolbar for lathe |
| CN202752848U (en) * | 2012-06-27 | 2013-02-27 | 河南航天精工制造有限公司 | Screw tap clamp for lathe |
| CN203018863U (en) * | 2012-12-29 | 2013-06-26 | 重庆博森电气（集团）有限公司 | Lathe screw tap clamp |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213616A (en) * | 2018-03-09 | 2018-06-29 | 浙江理工大学 | A kind of tapping auxiliary device of band lubrication and scale function |
| CN108213616B (en) * | 2018-03-09 | 2023-12-19 | 浙江理工大学 | Tapping auxiliary device with lubrication and scale functions |
| CN111156348A (en) * | 2020-03-18 | 2020-05-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Strenghthened type rigidity jib with tensile instruction function |
| CN117086666A (en) * | 2023-10-17 | 2023-11-21 | 中国科学院工程热物理研究所 | Multi-surface switching clamping tool for tap machining |
| CN117086666B (en) * | 2023-10-17 | 2023-12-22 | 中国科学院工程热物理研究所 | Multi-surface switching clamping tool for tap machining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104384952B (en) | 2016-11-09 |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 |