GB330882A - Improvements in or relating to milling and like machines for copying and reproducing - Google Patents
Improvements in or relating to milling and like machines for copying and reproducingInfo
- Publication number
- GB330882A GB330882A GB850829A GB850829A GB330882A GB 330882 A GB330882 A GB 330882A GB 850829 A GB850829 A GB 850829A GB 850829 A GB850829 A GB 850829A GB 330882 A GB330882 A GB 330882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tracer
- contacts
- arms
- casing
- motor
- 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
- B23Q35/24—Feelers; Feeler units
- B23Q35/26—Feelers; Feeler units designed for a physical contact with a pattern or a model
- B23Q35/30—Feelers; Feeler units designed for a physical contact with a pattern or a model for control of an electrical or electro-hydraulic copying system
- B23Q35/32—Feelers; Feeler units designed for a physical contact with a pattern or a model for control of an electrical or electro-hydraulic copying system in which the feeler makes and breaks an electrical contact or contacts, e.g. with brush-type tracers
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Copy Controls (AREA)
Abstract
330,882. Coates, H. March 15, 1929. Copying-mechanism.-In a, copying machine of the type in which the movements of the cutter are controlled by a tracer which moves over a pattern, the tracer is gyrostatically controlled by means of a. rotating mass associated with the tracercarrier. The tracer 11, preferably of a lenticular shape identical with the cutter profile is mounted in a sleeve 12 carried on the stator 13 of an electric motor which is mounted in a gimbal ring 14 supported on arms 16, carried on the casing 10, the trunnions 17 hawing slight play in the casing. The sleeve 12 is centred by means of a number of adjustable radially-arranged springs 18. The springs 18 and the gyrostatic action of the motor armature resist any lateral movement of the tracer 11. The motor shaft 23 drives through a universal coupling 24 a fly-wheel member 22 whose periphery is engaged by rollers 28 mounted on the arms 26 of a number of bell-crank levers which are pivoted at 25 to arms 15 secured to the motor casing. The long arms 27 of the bell cranks carry contacts 29 coacting with oppositely-disposed contacts 30, 31 mounted in the casing. While the tracer is not engaging the pattern the motor casing is pushed forward by springs acting on the arms 16 and the forward feed contacts 29, 31 are engaged. If however the motor is moved to the right t in Fig. 1 or is tilted from its normal position one or more of the bell cranks will be shifted to engage the contacts 29, 30 which produce a withdrawal movement of the cutter and tracer. The contacts 31 are connected with diametrallvopposite pairs in series, as shown in Fig. 3, so that forward feed only occurs when opposite pairs of contacts 31 are both engaged. The withdrawal contacts 30 are, however, connected in parallel to mains 33, 34 so that when any contact 30 is engaged through the tracer encountering the pattern the tracer and cutter are at once withdrawn. The controlling springs 18 and 33<1> are adjusted according to the degree of sensitivity required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB850829A GB330882A (en) | 1929-03-15 | 1929-03-15 | Improvements in or relating to milling and like machines for copying and reproducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB850829A GB330882A (en) | 1929-03-15 | 1929-03-15 | Improvements in or relating to milling and like machines for copying and reproducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB330882A true GB330882A (en) | 1930-06-16 |
Family
ID=9853783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB850829A Expired GB330882A (en) | 1929-03-15 | 1929-03-15 | Improvements in or relating to milling and like machines for copying and reproducing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB330882A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447201A (en) * | 1943-12-13 | 1948-08-17 | Gorton George Machine Co | Tracer and tracer controlled operation of machine tools and other cutting machines |
| EP0169416A1 (en) * | 1984-07-25 | 1986-01-29 | Dr. Johannes Heidenhain GmbH | Position-sensing probe |
-
1929
- 1929-03-15 GB GB850829A patent/GB330882A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447201A (en) * | 1943-12-13 | 1948-08-17 | Gorton George Machine Co | Tracer and tracer controlled operation of machine tools and other cutting machines |
| EP0169416A1 (en) * | 1984-07-25 | 1986-01-29 | Dr. Johannes Heidenhain GmbH | Position-sensing probe |
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