GB424261A - Improvements in internal grinding machines - Google Patents
Improvements in internal grinding machinesInfo
- Publication number
- GB424261A GB424261A GB2036133A GB2036133A GB424261A GB 424261 A GB424261 A GB 424261A GB 2036133 A GB2036133 A GB 2036133A GB 2036133 A GB2036133 A GB 2036133A GB 424261 A GB424261 A GB 424261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- worm
- grinding
- causes
- tappet
- 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
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/18—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the presence of dressing tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
424,261. Internal-grinding machines. CHURCHILL MACHINE TOOL CO., Ltd., Broadheath, near Manchester, and ASBRIDGE, H. H., Reigate, Moss Lane, Ashton-on-Mersey. July 19, 1933, No. 20361. [Class 60] The worktable of an internalgrinding machine when moving to grinding position connects the driving means to a mechanism for a mechanically timed cycle of operations which proceeds to its completion independently of further movements of the table, the mechanism comprising means to control the feeding of the grinding wheel to and from the work, and a tappet wheel which makes one revolution during the cycle and controls feed compensation for wheel wear, the reversal of the worktable, and disconnection of the drive to the mechanism at the end of the cycle. In the grinder shown, the worktable a is moved to grinding position by hand operation of the reversing handle s controlling the flow of fluid to the hydraulic operating cylinder, and is then reciprocated during grinding by a mechanically-oscillated stop c which engages an abutment d on the table, as described in Specification 415,879. When grinding position is reached, a dog p on the table engages a lever t and causes it to raise a drop-worm w, carried by pivoted arms v, Fig. 2, and driven by a belt w<1>, into engagement with a worm-wheel 2. The worm is retained in this position by a rod x pivoted to the lever t and having a recess in which engages a locking slide when it is in the raised position. On the shaft 3 of the worm is a face-cam 4, Fig. 2, against which a pin 7 on the cross-slide 5 of the wheel head is caused to bear by a weight 8, and which causes the in and out feed movements of the slide. Also mounted on the shaft 3 is the wheel 9, carrying tappets 10, 14, 22. During rotation of this wheel the tappet 14 engages a sliding rod 15, Fig. 1, which operates through a pawl 16 and ratchet wheel 17 a worm 18, Fig. 2, and through it a worm wheel 19 which rotates a sleeve 20 revoluble on the shaft 3 and having a screwed end engaging a nut 21 against which the cam 4 bears. The nut and cam are thus moved axially to compensate for wheel wear. On completion of grinding, the tappet 10 engages a plunger 11, which through a lever 12 and link 13 reverses the handle s and causes the table a to be moved away, a dog q on the table bringing the handle to neutral position at the end of the stroke. Finally, the tappet 22 on the wheel 9 causes the locking-slide to release the rod x, which drops and allows the worm w to disengage from the wheel 2. During movement of the table to grinding position, a tappet 25, Fig. 5, on it causes fluid to be supplied to a cylinder k which causes rotation about an axis j of a wheel trueing tool and brings it into the operative position shown in full lines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2036133A GB424261A (en) | 1933-07-19 | 1933-07-19 | Improvements in internal grinding machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2036133A GB424261A (en) | 1933-07-19 | 1933-07-19 | Improvements in internal grinding machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB424261A true GB424261A (en) | 1935-02-19 |
Family
ID=10144659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2036133A Expired GB424261A (en) | 1933-07-19 | 1933-07-19 | Improvements in internal grinding machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB424261A (en) |
-
1933
- 1933-07-19 GB GB2036133A patent/GB424261A/en not_active Expired
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