CN201735914U - Tapping fixture for drilling machine - Google Patents
Tapping fixture for drilling machine Download PDFInfo
- Publication number
- CN201735914U CN201735914U CN2010202014985U CN201020201498U CN201735914U CN 201735914 U CN201735914 U CN 201735914U CN 2010202014985 U CN2010202014985 U CN 2010202014985U CN 201020201498 U CN201020201498 U CN 201020201498U CN 201735914 U CN201735914 U CN 201735914U
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- CN
- China
- Prior art keywords
- friction plate
- blind hole
- splined shaft
- sleeve
- spline
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a tapping fixture for a drilling machine, comprising a sleeve barrel, a spline shaft, a friction sheet assembly, a rolling bearing, a compaction disc and a screw tap fixing sleeve, wherein the sleeve barrel comprises a blind hole, and a plurality of positioning keys are arranged at the bottom part of the blind hole; a spline is arranged at one end of the spline shaft, and the other end is fixedly connected with the screw tap fixing sleeve; the friction sheet assembly is sheathed on the spline shaft, and is located between the bottom part of the blind hole of the sleeve barrel and a lug boss of the spline shaft; the friction sheet assembly is formed through alternate superposition of a plurality of first friction sheets and a plurality of second friction sheets , stopping keys corresponding to the positioning keys are arranged at outer rings of the first friction sheets, and spline slots matched with splines are arranged on center holes of the second friction sheets; the rolling bearing and the compaction disc are sheathed on the spline shaft, and the compression disc is in threaded connection with the inner wall of the blind hole of the sleeve barrel. The tapping fixture for the drilling machine can eliminate the hidden breaking danger of a screw tap to increase the processing efficiency.
Description
Technical field
The utility model relates to a kind of auxiliary equipment of machining, particularly a kind of drilling machine tapping clamp.
Background technology
Drilling machine is common machining equipment, is meant main lathe with drill bit machining hole on workpiece.Usually drill bit rotates to be main motion, and drill bit moves axially and is feed motion; Drilling machine is simple in structure, and machining accuracy is relatively low, can drill through hole, blind hole, change can expand behind the special tool, spot-facing, ream or carry out processing such as tapping.
The work characteristics of drilling machine is: workpiece maintains static in process, allows drill bit or screw tap move, and center cutter is aligned the center, hole of processing work, and drill bit or screw tap are rotated, along the major axes orientation feeding, mode of operation both can make manually, and was also motor-driven.
Tapping processing is a kind of processing mode of drilling machine, tapping is exactly that to adopt a kind of dedicated tool of machining internal thread be screw tap (being commonly called as tap), in the circular hole of machine-shaping, rotate along axis direction, on the circular hole surface, cut, depict the machining mode of internal thread by screw tap; Tapping is processed with manually and motor-driven two kinds, manually promptly uses regular tap and special spanner to process by operating personnel, and machining accuracy is low, efficient is low, but frangibility not is applicable to that diameter is less, and the degree of depth is more shallow, and the workpiece material is softer and can not go up the part of machine tooling; Motor-driven lathe and the machine tap of promptly adopting processed, and machining accuracy height, efficient height, but frangibility are applicable to that diameter is big, the degree of depth is dark, the harder middle-size and small-size part of workpiece material.
Tapping processing belongs to the manufacturing procedure of comparison difficulty, and tapping processing is different from boring processing, machine tap is different fully with drill bit simultaneously, and drill bit adds man-hour, and drill bit is in rotary cutting, vertically down horizontal feed motion need be provided with the amount of feeding, and rotary speed is very fast; The drilling machine tapping then is to carry out successional rotating screw motion, and the amount of feeding need not be set, and screw tap is in spiral rotatablely moves, and voluntarily vertically downward, and speed is slower, generally is the minimum speed that drilling machine is set.In case overload will cause the screw tap fracture, part is scrapped, and can cause equipment and personnel's injury accident when serious.Because screw tap almost is to be embedded in the workpiece to cut, the machining load of screw tap per tooth is very big, and screw tap is very big along screw thread and workpiece contact-making surface, it must hold and get rid of smear metal during screw cutting, so screw tap is to work under harsh conditions, easily overload takes place and fracture, phenomenon such as broken teeth, often cause workpiece to be scrapped.
The utility model content
For addressing the above problem, the utility model provides a kind of drilling machine tapping clamp, avoid screw tap because the overload and the fracture or cause workpiece to be scrapped.
For achieving the above object, the utility model provides a kind of drilling machine tapping clamp, comprise sleeve, splined shaft, friction plate assembly, rolling bearing, compress disk and screw tap fixed cover, described sleeve comprises a blind hole, described blind hole bottom is provided with a plurality of positioning keys, and a plurality of described positioning keys evenly distribute along described blind hole inwall; One end of described splined shaft is provided with spline, and its end that is provided with spline is positioned at described blind hole, and the other end is fixedlyed connected with described screw tap fixed cover; Described splined shaft is provided with a circle boss, and described friction plate assembly is enclosed within on the described splined shaft, and between the blind hole bottom and described boss of described sleeve, the thickness of described friction plate assembly is greater than the blind hole bottom of described sleeve and the distance between the described boss; Described friction plate assembly is superimposed by a plurality of first friction plates and a plurality of second friction plate and constitutes, described first friction plate and second friction plate are stacked alternately, the outer ring of described first friction plate is provided with the corresponding backstop key of positioning key with described blind hole bottom, and the centre bore of described second friction plate is provided with the spline that the spline with described splined shaft is complementary; Described rolling bearing and the described disk that compresses are enclosed within on the described splined shaft, and described rolling bearing compresses between disk and the described boss described, and the described disk that compresses is connected with described sleeve blind hole inner thread.
Described positioning key and the welding of described sleeve are fixing.
Described screw tap fixed cover is fixedlyed connected with described splined shaft by a taper bolt.
Drilling machine tapping clamp of the present utility model by skidding between the friction plate of its friction plate assembly, has effectively been avoided the fracture of screw tap and the damage of workpiece, and easy accessibility.
By drilling machine tapping clamp of the present utility model, eliminate the screw tap hidden danger that fractures, guaranteed process safety, reduced processing cost, improved working (machining) efficiency.
Description of drawings
Fig. 1 is the structural representation of drilling machine of the present utility model with tapping clamp;
Fig. 2 is the upward view of Fig. 1 middle sleeve;
Fig. 3 is the schematic diagram of splined shaft among Fig. 1, and wherein (a) is front view, (b) is the vertical view of (a), (c) is the upward view of (a);
Fig. 4 is for compressing the upward view of disk among Fig. 1;
Fig. 5 is the schematic diagram of friction plate assembly among Fig. 1, and wherein (a) is front view, (b) is the local enlarged diagram of regional a in (a);
Fig. 6 is the vertical view of first friction plate among Fig. 5;
Fig. 7 is the vertical view of second friction plate among Fig. 5;
Fig. 8 is the working state schematic representation that drilling machine is used tapping clamp among Fig. 1.
The specific embodiment
Fig. 1 is the structural representation of drilling machine of the present utility model with tapping clamp, and as shown in the figure, drilling machine of the present utility model comprises sleeve 10, splined shaft 20, friction plate assembly 30, rolling bearing 40, compresses disk 50 and screw tap fixed cover 60 with tapping clamp.
Referring to illustrated in figures 1 and 2, described sleeve 10 comprises a blind hole 11, and described blind hole 11 bottoms are provided with four positioning keys 12, and described four positioning keys 12 evenly distribute along blind hole 11 inwalls.One end of described splined shaft 20 is provided with spline 22, an end that is provided with spline 22 is positioned at described blind hole 11, the other end is fixedlyed connected with described screw tap fixed cover 60, and its connected mode can adopt a taper bolt 61 fixedly connected, also can connect by screw or bolting.Four positioning keys 12 can be to be welded in the sleeve 10, also can be to be structure as a whole with sleeve 10.
Referring to Fig. 1 and shown in Figure 3, described splined shaft 20 is provided with a circle boss 21, described friction plate assembly 30 is enclosed within on the described splined shaft 20, between blind hole 11 bottoms and described boss 21 of described sleeve 10, the thickness of described friction plate assembly 30 is greater than blind hole 11 bottoms of described sleeve 10 and the distance between the described boss 21.
Referring to shown in Figure 1, described rolling bearing 40 and compress disk 50 and be enclosed within on the described splined shaft 20, described rolling bearing 40 compresses between disk 50 and the described boss 21 described.Described rolling bearing 40 is a thrust ball bearing with flat seat.
Referring to Fig. 1 and shown in Figure 4, the described disk 50 that compresses is provided with external screw thread, and described sleeve 10 blind holes 11 inwalls are provided with internal thread, and the described disk 50 that compresses is connected with described sleeve 10 blind holes 11 inner threads.
Shown in Fig. 5～7, described friction plate assembly 30 is superimposed by a plurality of first friction plates 31 and a plurality of second friction plate 32 and constitutes, described first friction plate 31 and second friction plate 32 are stacked alternately, be that ground floor is first friction plate 31, then the second layer is that the 3rd layer of second friction plate 32 is again that 31, the four layers of first friction plates are second friction plate 32, and the like, odd-level is first friction plate 31, and even level is second friction plate 32.The outer ring of described first friction plate 31 is provided with four positioning keys, 12 corresponding four the backstop keys 311 with described blind hole 11 bottoms, and the centre bore of described second friction plate 32 is provided with the spline 321 that the spline 22 with described splined shaft 20 is complementary.The centre bore of described first friction plate 31 is a circular hole, and four backstop keys 311 of the outer ring of described first friction plate 31 evenly distribute, and matches with four positioning keys 12 of described blind hole 11 bottoms.The material of described first friction plate 31 and second friction plate 32 is metal asbestos composites.
The quantity of backstop key 311 and positioning key 12 should be identical, can be a plurality of, can be provided with as required.
Fig. 8 is the working state schematic representation that drilling machine is used tapping clamp among Fig. 1.As shown in the figure, drilling machine of the present utility model with tapping clamp in use, sleeve 10 is installed on the drill press spindle 101, screw tap 70 is installed on the described screw tap fixed cover, after installing, just can process the workpiece on the Workpiece clamping device 102 100.Compressing disk 50 by adjusting can pressing friction chip module 30, regulates the frictional force between first friction plate 31 and second friction plate 32.During the tapping clamp operate as normal, four backstop keys 311 of first friction plate 31 match with four positioning keys 12 of described blind hole 11 bottoms, and the spline 321 of described second friction plate 32 matches with the spline 22 of described splined shaft 20, rely on the frictional force between friction plate assembly 30 inner first friction plates 31 and second friction plate 32, can guarantee screw tap 70 in normal operation not relatively sleeve 10 rotate.When overload situations takes place in screw tap 70, when screw tap 70 was given the bigger moment of torsion of described splined shaft 20, first friction plate 31 and second friction plate, 32 overcome frictions were skidded, i.e. sleeve 10 rotations, and splined shaft 20 does not rotate, and so just can avoid screw tap 70 and workpiece 100 to be damaged.
Claims (3)
1. a drilling machine tapping clamp is characterized in that, comprise sleeve, splined shaft, friction plate assembly, rolling bearing, compress disk and screw tap fixed cover,
Described sleeve comprises a blind hole, and described blind hole bottom is provided with a plurality of positioning keys, and a plurality of described positioning keys evenly distribute along described blind hole inwall;
One end of described splined shaft is provided with spline, and its end that is provided with spline is positioned at described blind hole, and the other end is fixedlyed connected with described screw tap fixed cover;
Described splined shaft is provided with a circle boss, and described friction plate assembly is enclosed within on the described splined shaft, and between the blind hole bottom and described boss of described sleeve, the thickness of described friction plate assembly is greater than the blind hole bottom of described sleeve and the distance between the described boss;
Described friction plate assembly is superimposed by a plurality of first friction plates and a plurality of second friction plate and constitutes, described first friction plate and second friction plate are stacked alternately, the outer ring of described first friction plate is provided with the corresponding backstop key of positioning key with described blind hole bottom, and the centre bore of described second friction plate is provided with the spline that the spline with described splined shaft is complementary;
Described rolling bearing and the described disk that compresses are enclosed within on the described splined shaft, and described rolling bearing compresses between disk and the described boss described, and the described disk that compresses is connected with described sleeve blind hole inner thread.
2. drilling machine tapping clamp as claimed in claim 1 is characterized in that, described positioning key and the welding of described sleeve are fixing.
3. drilling machine tapping clamp as claimed in claim 1 is characterized in that, described screw tap fixed cover is fixedlyed connected with described splined shaft by a taper bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202014985U CN201735914U (en) | 2010-05-21 | 2010-05-21 | Tapping fixture for drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202014985U CN201735914U (en) | 2010-05-21 | 2010-05-21 | Tapping fixture for drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201735914U true CN201735914U (en) | 2011-02-09 |
Family
ID=43551196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202014985U Expired - Fee Related CN201735914U (en) | 2010-05-21 | 2010-05-21 | Tapping fixture for drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201735914U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493317A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Friction-type tapping chuck |
| CN104801790A (en) * | 2015-05-19 | 2015-07-29 | 深圳比特力机械有限公司 | Circular arc overspeed fixture |
| CN106077848A (en) * | 2016-08-02 | 2016-11-09 | 李迎丰 | Fixture attacked by brill |
| CN109465505A (en) * | 2018-12-30 | 2019-03-15 | 广西玉柴机器股份有限公司 | A kind of break-proof safety tap chuck |
-
2010
- 2010-05-21 CN CN2010202014985U patent/CN201735914U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493317A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Friction-type tapping chuck |
| CN104801790A (en) * | 2015-05-19 | 2015-07-29 | 深圳比特力机械有限公司 | Circular arc overspeed fixture |
| CN106077848A (en) * | 2016-08-02 | 2016-11-09 | 李迎丰 | Fixture attacked by brill |
| CN109465505A (en) * | 2018-12-30 | 2019-03-15 | 广西玉柴机器股份有限公司 | A kind of break-proof safety tap chuck |
| CN109465505B (en) * | 2018-12-30 | 2023-09-22 | 广西玉柴机器股份有限公司 | Safe broken-wire-preventing cone chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL SPECIAL STEEL CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20140109 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200940 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140109 Address after: 200940 Baoshan District aquatic Road, Shanghai, No. 1269 Patentee after: BAOSTEEL SPECIALSTEEL CO., LTD. Address before: 201900 Shanghai City, Baoshan District Mudanjiang Road No. 1813 South Patentee before: Baoshan Iron & Steel Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20190521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |