CN104057161A - Internal thread tapper and tapping method thereof - Google Patents
Internal thread tapper and tapping method thereof Download PDFInfo
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- CN104057161A CN104057161A CN201410283052.4A CN201410283052A CN104057161A CN 104057161 A CN104057161 A CN 104057161A CN 201410283052 A CN201410283052 A CN 201410283052A CN 104057161 A CN104057161 A CN 104057161A
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- screw tap
- tapping
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- internal thread
- catch bar
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Abstract
The invention relates to an internal thread tapper and a tapping method thereof. The internal thread tapper comprises a vertical driller, a three-jaw chuck, a guide push rod, a screw tap toggle and a screw tap. The internal thread tapper has the key points that the middle of the guide push rod is provided with a Morse cone pin, and both ends of the guide push rod are respectively provided with a cylindrical stop pin; the lower end of the Morse cone pin is provided with a cylindrical taper pin; the Morse cone pin and the cylindrical stop pin are fixedly connected with the guide push rod; a part is arranged on the three-jaw chuck; the guide push rod and the screw tap are driven to rotate in sequence by the main shaft of the vertical driller to perform tapping on the part. The tapper disclosed by the invention is simple in structure, easy to manufacture and low in cost; the screw tap is guided by adopting the guide push rod to perform internal thread tapping on the part on the vertical driller; the part is convenient to assemble and disassemble, the process is simple, the operation is easy, and the positioning accuracy is high, so that the assembly and disassembly time of the part is shortened, the labor strength of a worker and the tool loss are reduced, the production efficiency is improved, the production cost is reduced, and the processed part is stable in quality and high in reliability.
Description
Technical field
The present invention relates to a kind of Screw thread process method, be specifically related to a kind of internal thread tapping machine and tapping method thereof.
Background technology
Tapping is most widely used a kind of female thread machining method; processing method for small-medium size internal thread (M8 is following); what mainly adopt is that installing drill chuck clamping screw tap carries out on small-sized tapping machine on bench drill; this tapping method; for the higher quenched materials of hardness requirement (as HRC25-35); because cutting force is larger; and bench drill power of motor is less than normal; and main shaft rotary speed is high; screw tap easily produces and shuts down in tapping process, causes and cannot drive screw tap to carry out product processing.To the internal thread machining between internal thread M8～M24, mainly adopt the enterprising driving silk of engine lathe, this processing method, screwing speed is slow, the process-cycle is long, and working (machining) efficiency is low, producing cost is high, can not meet the requirement of batch production.And while adopting the tapping of elastic clamping cover, machine tap is easily loosening, and because machine tap is more crisp, easily collapses tooth in tapping process, causes unstable product quality.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned technology, provide a kind of easy to manufacture, technique is simple, easy to operate, expense is low, production efficiency is high, stay-in-grade internal thread tapping machine and tapping method thereof.
Internal thread tapping machine of the present invention and tapping method thereof, described internal thread tapping machine comprises upright drill, scroll chuck, guiding catch bar, screw tap toggle and screw tap, it is characterized in that: described guiding catch bar centre is provided with Morse's cone pin, two ends are provided with cylinder backing pin; The lower end of described Morse's cone pin is provided with cylinder taper pin; Described Morse's cone pin, cylinder backing pin are solidly connected with guiding catch bar, and Morse's cone pin is connected with drill press spindle.
A kind of tapping method of internal thread:
A, according to the dimensions of the internal thread of part, select the guiding catch bar matching with screw tap toggle;
In the installing hole of the main shaft of the Morse's cone pin insertion upright drill of B, guiding catch bar, and tighten up by tightening up swivel nut;
C, scroll chuck are placed on the workbench of upright drill, make the center of scroll chuck and the main shaft of upright drill concentric, and are fixed tightly on workbench;
D, part are arranged on scroll chuck, and Central of the parts is concentric with the main shaft of scroll chuck and upright drill, and tightens up;
E, screw tap are placed on part, and screw tap toggle is enclosed within on screw tap, and tightens up;
F, move down the main shaft of upright drill, make to guide the cone pinnacle of the cylinder taper pin on catch bar to enter in the center taper hole of screw tap toggle, to part location, screw tap toggle touches with the cylinder backing pin at guiding catch bar two ends;
G, according to the material behavior of part, set the speed of mainshaft of upright drill;
H, startup upright drill, the main shaft of upright drill drives guiding catch bar to rotate downwards, and two cylinder backing pins on guiding catch bar drive screw tap toggle to rotate, and screw tap toggle drives screw tap to rotate downwards, to part tapping;
When I, the tapping length showing on feed box meet the requirements of length, stop upright drill work, part tapping finishes;
The main shaft of J, reversion upright drill, guiding catch bar drives the reverse rotation of screw tap toggle, and screw tap exits, and tapping has operated;
K, unclamp scroll chuck, take out the part of attacking silk;
L, return to step D, carry out the tapping operation of next part.
In order better to realize above-mentioned purpose:
On described part, also cover has opening protective sleeve.
The cone angle of described cylinder taper pin is 55～65 degree.
Internal thread tapping machine of the present invention and tapping method thereof, chasing bar is simple in structure, easy to manufacture, expense is low; Adopt guiding catch bar guiding screw tap part to be carried out the tapping of internal thread on upright drill, part is easy to loading and unloading, technique is simple, processing ease, positioning precision are high, shortened the lay day of part, reduced the loss of workman's labour intensity and cutter, improved production efficiency, reduced production cost, the part quality of processing is stablized, good reliability.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention schematic diagram.
Fig. 2 is the structural representation of guiding catch bar.
In figure: 1, shaft transmission, 2, feed box, 3, main shaft, 4, guiding catch bar, 5, screw tap toggle, 6, screw tap; 7 parts, 8, opening protective sleeve, 9, claw, 10, scroll chuck, 11, workbench; 12, cylinder backing pin, 13, Morse's cone pin, 14, cylinder taper pin, a, cone angle.
The specific embodiment
Internal thread tapping machine of the present invention, comprises upright drill, scroll chuck 10, guiding catch bar 4, screw tap toggle 5 and screw tap 6.Guiding catch bar 4 centres are provided with Morse's cone pin 13, two ends are provided with cylinder backing pin 12.The lower end of Morse's cone pin 13 is provided with cylinder taper pin 14, and the cone angle a of cylinder taper pin 14 is 60 degree.Morse's cone pin 13 and cylinder backing pin 12 are welded to connect with guiding catch bar 4.Morse's cone pin 13 on guiding catch bar 4 is connected with the main shaft 3 of upright drill.
Internal thread tapping machine of the present invention is such tapping:
A, according to the dimensions of the internal thread of part 7, select the guiding catch bar 4 matching with screw tap toggle 5;
In the installing hole of the main shaft 3 of the installation end insertion upright drill of the Morse's cone pin 13 of B, guiding catch bar 4, and be fixed tightly on main shaft 3 by tightening up swivel nut;
C, scroll chuck 10 are placed on the workbench 11 of upright drill, make scroll chuck 10 center concentric with the main shaft 3 of upright drill, and are fixed tightly on workbench 11;
D, opening protective sleeve 8 are enclosed within on part 7, be placed on scroll chuck 10, part 7 is concentric with main shaft 3, the scroll chuck 10 of upright drill, rotate the clamping bolt of scroll chuck 10, three claw 9 clamping opening protective sleeves 8, part 7 is fixed tightly in opening protective sleeve 8, the outer surface that this just can part of damage 7;
E, screw tap 6 are placed on part 7, and screw tap toggle 5 is enclosed within on screw tap 6 and tightens clamp-screw;
F, move down the main shaft 3 of upright drill, make to guide the cone pinnacle of the cylinder taper pin 14 on catch bar 4 to enter in the center taper hole of screw tap toggle 4, screw tap toggle 5 touches with the cylinder backing pin 12 at guiding catch bar 4 two ends;
The material of G, part 7 is HRC32, and internal diameter is 22.5 millimeters, and inner bore surface roughness is Ra=1.6; On shaft transmission 1, the rotating speed of setting the main shaft 3 of upright drill is 80 revs/min;
H, startup upright drill, main shaft 3 is rotated down, and drives guiding catch bar 4 to be rotated down, and two the cylinder backing pins 12 on guiding catch bar 4 drive screw tap toggles 5, screw tap toggle 5 drive screw taps 6 to rotate downwards, to part 7 tapping;
I, on feed box 2, show when tapping length meets the requirements of length, stop upright drill work, part 7 tapping finish;
J, press the invert button of upright drill, main shaft 3 upwards oppositely turns, and guiding catch bar 4 drives upwards reverse rotation of screw tap toggles 5, and screw tap 6 exits from part 7, and tapping has operated;
K, rotate backward the clamping bolt of scroll chuck 10, three pawl cards 9 of scroll chuck 10 outwards open, and opening protective sleeve 8 automatically resets and unclamps part 7, takes off opening protective sleeve 8, by part 7 censorships;
L, return to step D, carry out next part 7 tapping operations.
Claims (4)
1. an internal thread tapping machine and tapping method thereof, described internal thread tapping machine comprises upright drill, scroll chuck (10), guiding catch bar (4), screw tap toggle (5) and screw tap (6), it is characterized in that: described guiding catch bar (4) centre is provided with Morse's cone pin (13), two ends are provided with cylinder backing pin (14); The lower end of described Morse's cone pin (13) is provided with cylinder taper pin (14); Described Morse's cone pin (13), cylinder backing pin (14) are solidly connected with guiding catch bar (4), and Morse's cone pin (13) is connected with the main shaft (3) of drilling machine.
2. a tapping internal thread method:
A, according to the dimensions of the internal thread of part (7), select the guiding catch bar (4) matching with screw tap toggle (5);
In the installing hole of the main shaft (3) of Morse's cone pin (13) the insertion upright drill of B, guiding catch bar (4), and tighten up by tightening up swivel nut;
C, scroll chuck (10) are placed on the workbench (11) of upright drill, make the center of scroll chuck (10) and the main shaft (3) of upright drill concentric, and are fixed tightly on workbench (11);
It is upper that D, part (7) are arranged on scroll chuck (10), and the center of part (7) is concentric with the main shaft (3) of scroll chuck (10) and upright drill, and tightens up;
It is upper that E, screw tap (6) are placed in part (7), and screw tap toggle (5) is enclosed within screw tap (6) and goes up and tighten up;
F, move down the main shaft (3) of upright drill, make to guide the cone pinnacle of the cylinder taper pin (14) on catch bar (4) to enter in the center taper hole of screw tap toggle (5), to part (7) location, screw tap toggle (5) touches with the cylinder backing pin (12) at guiding catch bar (4) two ends;
G, according to the material behavior of part (7), set the rotating speed of the main shaft (3) of upright drill;
H, startup upright drill, the main shaft of upright drill (3) drives guiding catch bar (4) to rotate downwards, two cylinder backing pins (12) on guiding catch bar (4) drive screw tap toggle (5) rotation, screw tap toggle (5) drives screw tap (6) to rotate downwards, to part (7) tapping;
When I, the tapping length showing on feed box (2) meet the requirements of length, stop upright drill work, part (7) tapping finishes;
The main shaft (3) of J, reversion upright drill, guiding catch bar (4) drives screw tap toggle (5) reverse rotation, and screw tap (6) exits, and tapping has operated;
K, unclamp scroll chuck (10), take out the part (7) of attacking silk;
L, return to step D, carry out the tapping operation of next part (7).
3. tapping internal thread method according to claim 2, is characterized in that: the upper cover of described part (7) has opening protective sleeve (8).
4. internal thread tapping machine according to claim 1, is characterized in that: the cone angle (a) of described cylinder taper pin (14) is 55～65 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283052.4A CN104057161B (en) | 2014-06-24 | 2014-06-24 | A kind of tapping internal thread method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283052.4A CN104057161B (en) | 2014-06-24 | 2014-06-24 | A kind of tapping internal thread method |
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| Publication Number | Publication Date |
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| CN104057161A true CN104057161A (en) | 2014-09-24 |
| CN104057161B CN104057161B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410283052.4A Active CN104057161B (en) | 2014-06-24 | 2014-06-24 | A kind of tapping internal thread method |
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| CN (1) | CN104057161B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436633A (en) * | 2015-12-08 | 2016-03-30 | 山西汾西重工有限责任公司 | Inner bore tapping tool for small-bore thread steel sleeve with external thread and method of inner bore tapping tool |
| CN107824909A (en) * | 2017-12-16 | 2018-03-23 | 贵州航天风华精密设备有限公司 | A kind of chasing bar for internal thread machining |
| CN113695843A (en) * | 2021-07-30 | 2021-11-26 | 江西昌河航空工业有限公司 | Method for processing internal thread of steel wire thread insert |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201204Y (en) * | 1994-01-07 | 1995-06-21 | 中国第一汽车集团公司标准件厂 | Multifunctional combined thread cutter head |
| JPH09108942A (en) * | 1995-10-19 | 1997-04-28 | Amada Co Ltd | Tapping device |
| CN201300267Y (en) * | 2008-11-20 | 2009-09-02 | 南阳二机石油装备(集团)有限公司 | Device for lather to quickly process small-diameter internal and external screws |
| CN101941131A (en) * | 2009-07-06 | 2011-01-12 | 哈尔滨汽轮机厂有限责任公司 | Method for repairing cylinder screw holes and special scraper and screw tap for implementing method |
| CN203045091U (en) * | 2012-11-29 | 2013-07-10 | 含山县清溪团结机械配件厂 | Tapping device for lathe |
-
2014
- 2014-06-24 CN CN201410283052.4A patent/CN104057161B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201204Y (en) * | 1994-01-07 | 1995-06-21 | 中国第一汽车集团公司标准件厂 | Multifunctional combined thread cutter head |
| JPH09108942A (en) * | 1995-10-19 | 1997-04-28 | Amada Co Ltd | Tapping device |
| CN201300267Y (en) * | 2008-11-20 | 2009-09-02 | 南阳二机石油装备(集团)有限公司 | Device for lather to quickly process small-diameter internal and external screws |
| CN101941131A (en) * | 2009-07-06 | 2011-01-12 | 哈尔滨汽轮机厂有限责任公司 | Method for repairing cylinder screw holes and special scraper and screw tap for implementing method |
| CN203045091U (en) * | 2012-11-29 | 2013-07-10 | 含山县清溪团结机械配件厂 | Tapping device for lathe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436633A (en) * | 2015-12-08 | 2016-03-30 | 山西汾西重工有限责任公司 | Inner bore tapping tool for small-bore thread steel sleeve with external thread and method of inner bore tapping tool |
| CN107824909A (en) * | 2017-12-16 | 2018-03-23 | 贵州航天风华精密设备有限公司 | A kind of chasing bar for internal thread machining |
| CN113695843A (en) * | 2021-07-30 | 2021-11-26 | 江西昌河航空工业有限公司 | Method for processing internal thread of steel wire thread insert |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104057161B (en) | 2016-09-07 |
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