GB1173461A - Improvements in or relating to Apparatus for Tapping Holes in Work Pieces - Google Patents
Improvements in or relating to Apparatus for Tapping Holes in Work PiecesInfo
- Publication number
- GB1173461A GB1173461A GB554667A GB554667A GB1173461A GB 1173461 A GB1173461 A GB 1173461A GB 554667 A GB554667 A GB 554667A GB 554667 A GB554667 A GB 554667A GB 1173461 A GB1173461 A GB 1173461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- rollers
- spindle
- tapping
- rod
- 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
Links
Classifications
-
- 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
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
- B23G1/20—Machines with a plurality of working spindles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
1,173,461. Tapping. R. A. LISTER & CO. Ltd. 6 Feb., 1967, No. 5546/67. Heading B3N. [Also in Division F2] A tapping device comprises one or more tapping spindles 11, each of which is telescoped into a drive shaft 17, rotated by a pinion 19 driven by a reversible electric motor. The spindles are mounted in a body 25, which is moved towards and away from the work to be tapped by a lead screw driven by a second reversible electric motor. A number of microswitches 56-59, Fig. 7, are provided, which are successively actuated by dogs 61 mounted on a push-rod 62, so as to control the motors, the push-rod being connected to a second lead screw by a rocker arm 65 for moving the rod 62 axially. Shaft 17 is externally screw-threaded at 20 and engages a nut 21 having a thread pitch equal to that of the tap and is connected to body 25 by shear pins. The inner end of spindle 11 has a hard metal pad 26 with a ball 27 disposed therein, the ball co-operating with a spring-urged metal peg 28 located in shaft 17. Spindle 11 has longitudinal grooves 40 which support rollers 41 surrounded by a spring 43, and the rollers project into internal slots (42) in shaft 17. One end of the rollers is loosely encircled by a sleeve 44 screwed to shaft 17, and the other end is engaged by a sleeve 4, which abuts an internally screw-threaded split ring 47, screwed to shaft 17, and held together by a rupturable wire 49, to provide an overload release. In operation, when a predetermined torque is reached, rollers 41 move out of slot 40 and into adjacent grooves to provide slip. This slip continues until the cause is removed or the reversing motor is actuated. When the hole is tapped the motor reverses the drive and shaft 17 moves to the right, Fig. 1. However should the tap stick, the end of split ring 17 engages the end of slots 40, wire 49 snaps, and shaft 17 moves relative to spindle 11. Should the axial load be too great, shearing of the pins of nut 21 will occur.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB554667A GB1173461A (en) | 1967-02-06 | 1967-02-06 | Improvements in or relating to Apparatus for Tapping Holes in Work Pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB554667A GB1173461A (en) | 1967-02-06 | 1967-02-06 | Improvements in or relating to Apparatus for Tapping Holes in Work Pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1173461A true GB1173461A (en) | 1969-12-10 |
Family
ID=9798195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB554667A Expired GB1173461A (en) | 1967-02-06 | 1967-02-06 | Improvements in or relating to Apparatus for Tapping Holes in Work Pieces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1173461A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3021179A1 (en) * | 1979-06-08 | 1980-12-11 | Summa Corp | CLUTCH MECHANISM |
| GB2327197A (en) * | 1997-07-11 | 1999-01-20 | Recoules | Telescopic spindle |
| CN113458510A (en) * | 2021-07-27 | 2021-10-01 | 廖远华 | Be used for metal plate edge tapping device |
| CN114226881A (en) * | 2021-11-30 | 2022-03-25 | 邯郸市占江预应力锚具有限公司 | Efficient internal thread machining device for anchor rod connector production |
| CN114618936A (en) * | 2020-12-14 | 2022-06-14 | 湖北美的电冰箱有限公司 | Continuous die and punch press |
-
1967
- 1967-02-06 GB GB554667A patent/GB1173461A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3021179A1 (en) * | 1979-06-08 | 1980-12-11 | Summa Corp | CLUTCH MECHANISM |
| FR2458709A1 (en) * | 1979-06-08 | 1981-01-02 | Summa Corp | COMPACT CLUTCH MECHANISM |
| GB2327197A (en) * | 1997-07-11 | 1999-01-20 | Recoules | Telescopic spindle |
| GB2327197B (en) * | 1997-07-11 | 2002-02-20 | Recoules | A machining spindle |
| CN114618936A (en) * | 2020-12-14 | 2022-06-14 | 湖北美的电冰箱有限公司 | Continuous die and punch press |
| CN113458510A (en) * | 2021-07-27 | 2021-10-01 | 廖远华 | Be used for metal plate edge tapping device |
| CN113458510B (en) * | 2021-07-27 | 2023-11-10 | 东莞市克洛伊切削工具有限公司 | Tapping device for metal plate edge angle |
| CN114226881A (en) * | 2021-11-30 | 2022-03-25 | 邯郸市占江预应力锚具有限公司 | Efficient internal thread machining device for anchor rod connector production |
| CN114226881B (en) * | 2021-11-30 | 2022-11-15 | 邯郸市占江预应力锚具有限公司 | Efficient internal thread machining device for anchor rod connector production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |