GB1043531A - Variable speed drilling apparatus - Google Patents
Variable speed drilling apparatusInfo
- Publication number
- GB1043531A GB1043531A GB2383161A GB2383161A GB1043531A GB 1043531 A GB1043531 A GB 1043531A GB 2383161 A GB2383161 A GB 2383161A GB 2383161 A GB2383161 A GB 2383161A GB 1043531 A GB1043531 A GB 1043531A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- drill
- switch
- feed
- pressure
- 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
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/26—Fluid-pressure drives
Abstract
1,043,531. Drilling. H. HOBHOUSE. Oct. 1, 1962 [July 1, 1961], No. 23831/61. Heading B3C. A drilling machine comprises a hydraulic motor 6 for rotating a drill, the exhaust fluid being supplied to a ram 12 to feed the drill and means 9 for reversing the effect of the exhaust fluid if the torque on the motor exceeds a predetermined amount. When excessive torque operates the valve 9, the drill is withdrawn until a switch 13 is operated which causes drill feed to be resumed. Pressure is indicated by a gauge 15. In a modification, increased torque first causes a relief pressure to be supplied through a valve 47, Fig. 2A (not shown), but a further increase causes valve 9 to be reversed by actuation of a pressure switch 53 and to withdraw the drill. As the feed pressure drops, a switch 55A is released so that when switches 57, 57A are actuated by a plate 56, a relief valve 58 is opened, the valve 9 is reversed and the drill is advanced at rapid speed. When the switch 55A is again actuated, the valve 58 is closed and normal feed continues under the control of a throttle valve 48. Several bench or hand drills can be operated simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2383161A GB1043531A (en) | 1961-07-01 | 1961-07-01 | Variable speed drilling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2383161A GB1043531A (en) | 1961-07-01 | 1961-07-01 | Variable speed drilling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1043531A true GB1043531A (en) | 1966-09-21 |
Family
ID=10202017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2383161A Expired GB1043531A (en) | 1961-07-01 | 1961-07-01 | Variable speed drilling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1043531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2158307A1 (en) * | 1971-11-05 | 1973-06-15 | Atlas Copco Ab | |
| FR2425293A1 (en) * | 1978-05-10 | 1979-12-07 | Hydraulique B G | Double acting hydraulic jack control for drilling machine - has spool valve operating in three pressure stages, and non-return pilot valve controlling flow from piston rod chamber |
-
1961
- 1961-07-01 GB GB2383161A patent/GB1043531A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2158307A1 (en) * | 1971-11-05 | 1973-06-15 | Atlas Copco Ab | |
| FR2425293A1 (en) * | 1978-05-10 | 1979-12-07 | Hydraulique B G | Double acting hydraulic jack control for drilling machine - has spool valve operating in three pressure stages, and non-return pilot valve controlling flow from piston rod chamber |
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