GB483937A - Fluid pressure operated copying device, more particularly for use with fine boring mills - Google Patents
Fluid pressure operated copying device, more particularly for use with fine boring millsInfo
- Publication number
- GB483937A GB483937A GB2972/37A GB297237A GB483937A GB 483937 A GB483937 A GB 483937A GB 2972/37 A GB2972/37 A GB 2972/37A GB 297237 A GB297237 A GB 297237A GB 483937 A GB483937 A GB 483937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- control valve
- valve
- fluid
- pistons
- 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
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
- B23Q35/18—Means for transforming movement of the feeler or the like into feed movement of tool or work involving fluid means
-
- 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
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/24—Feelers; Feeler units
- B23Q35/26—Feelers; Feeler units designed for a physical contact with a pattern or a model
- B23Q35/36—Feelers; Feeler units designed for a physical contact with a pattern or a model for control of a hydraulic or pneumatic copying system
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
483,937. Boring machines. VOMAGBETRIEBS-AKT.-GES. Feb. 1, 1937, No. 2972. Convention date, Feb. 1, 1936. [Class 83 (iii)] [Also in Group XXIX] A fluid-pressure servomotor copying device particularly for use with fine boring mills has a moving control valve casing follow-up mechanism and fluid-pressure loading device for taking up back-lash in the mechanical transmission between the power piston and the control valve casing. The cutting tool 1 is moved radially by wedges or the like actuated by a rod 4 coupled to a double-acting piston 5 controlled by an auxiliary valve 9. This valve comprises four pistons 18, 24, 27, and 38 adjustably coupled together, the upper pair controlling the supply of pressure fluid, while the lower pair control the exhaust. The exhaust conduit is fitted with a spring-loaded valve so that the discharge of displaced oil takes place under a constant counter pressure. The coupling between the pistons 18, 24 and 27, 38 comprises a rod 45 having right and left handed threads engaging threaded apertures in balls 47, 48 held in recesses in the pistons by screwed ferrules 49, 50. A pin 53 is provided to prevent rotation of the ball 47. The rod is manipulated by a head 40 and is secured in its adjusted position by a lock-nut 46. Chamber 17<1> below the valve member is fitted with a spring-loaded relief and is connected by a passage 64 with the fluid inlet 21 so that a constant pressure is maintained in this chamber tending to hold the valve in contact with a roller carrier 65 which in turn holds the roller 11 against the templet 12. The control valve casing is arranged at right-angles to the power piston to which it is coupled by racks 15, 32 and toothed wheels 16, 17 to give a follow-up action. The racks may be replaced by steel bands adapted to wind on drums corresponding to the wheels 16, 17. The valve member has an arm 42 adapted to co-operate with an adjustable stop 43 to limit the stroke of the control valve and therefor the adjustment of the tool. In order to take up back-lash the control valve casing is formed with a pair of cylinders housing plungers subject to inlet pressure and acting against a fixed abutment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE204930X | 1936-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB483937A true GB483937A (en) | 1938-04-28 |
Family
ID=5784475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2972/37A Expired GB483937A (en) | 1936-02-01 | 1937-02-01 | Fluid pressure operated copying device, more particularly for use with fine boring mills |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH204930A (en) |
| GB (1) | GB483937A (en) |
-
1937
- 1937-01-12 CH CH204930D patent/CH204930A/en unknown
- 1937-02-01 GB GB2972/37A patent/GB483937A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH204930A (en) | 1939-05-31 |
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