GB1181241A - Improvements in or relating to Tool Lapping Machines and to Methods of Lapping Tools - Google Patents
Improvements in or relating to Tool Lapping Machines and to Methods of Lapping ToolsInfo
- Publication number
- GB1181241A GB1181241A GB1638266A GB1638266A GB1181241A GB 1181241 A GB1181241 A GB 1181241A GB 1638266 A GB1638266 A GB 1638266A GB 1638266 A GB1638266 A GB 1638266A GB 1181241 A GB1181241 A GB 1181241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tool
- lapping
- pin
- angle
- block
- 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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/34—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
1,181,241. Lapping; cutting tools. A. G. WELLUM. 15 June, 1967 [14 April, 1966], No. 16382/66. Headings B3C and B3D. A tool lapping machine for use in sharpening jig-boring or other tools tipped with tungsten carbide or high-speed steel comprises a tool holder assembly rotatably mounted on a tilt bracket carried on a support block: the tilt bracket being mounted on the block for angular turning movement about an axis parallel to the lapping plane of a lapping wheel; the tool holder assembly being mounted on the bracket for turning movement about an axis at right angles to the tilt axis of the bracket; the assembly including a tool support member for carrying the tool and mounted for turning movement about an axis at right angles to the turning axis of the assembly; and the assembly further including a base-plate having a stub axle for reception in a recess in the tilt bracket and provided with an axial bore for the reception of a reference pin, the pin having a circumferential datum edge defining a plane perpendicular to the axis of the pin, which pin when positioned so that the lapping plane is tangential to said datum edge of the pin determines the position of the axis of the turning movement of the tool holder assembly relative to the lapping plane. A tool lapping machine has a lapping wheel 15 on the shaft of an electric motor 17. A flexible mounting 18 for an electric lamp extends above the motor. A feed shaft 14 is rotatably supported in brackets 12, 13 on the machine bed 11. A collar 23 locked on one end of the shaft 14 by a clamping screw 24 carries screws 22, 22 which limit rotation of the shaft 14 by abutment against a rim 25 of the bed 11. A block 19 is clamped in required position on the shaft 14 by a clamping screw 20. For fine adjustment of the block 19 relative to the lapping wheel 15 the shaft 14 is movable axially by a micrometer screw 21. A lug 26 upstanding from the block 19 has a pivot pin 27 supporting a tilt bracket 28 which can be clamped by a screw 29 in adjusted position indicated on a scale 30 on the block 19. The tilt bracket 28 carries a quadrant plate 31 marked with a peripheral angular scale 36 and having at its centre of curvature a bearing assembly 33 rotatably supporting a hollow stub axle 34 to the upper end of which is secured a tool holder base-plate 35. The plate 35 has a stop pin 37 co-operating with adjustable stops 38, 39 on the plate 31. A cross slide 40 is adjustable on the plate 35 by a micrometer screw 41. A turret 42 is adjustable on the cross slide 40 by a micrometer screw 43 and rotatably supports a cylindrical tool block 44 marked with graduations 45. The shank 50 of a tool is clamped in the block 44 by screws 47. The tool shank 50 carries a tungsten carbide tip 52 having approach and trailing fins 54, 53 meeting in a nose 55. The approach fin 54 has approach angle a and front clearance angle #; the trailing fin 53 has trailing angle γ and side clearance angle #. A datum spacing pin 60 is provided with a forked lower shank 61 which is an easy fit in the bore of the stub axle 34. The pin 60 has a reduced diameter upper shank 62 with a concentric circular head 63 peripherally chamfered top and bottom to produce a circular datum edge 64 having a diameter of 0À500 in. A segment of the head is cut away to form a reference flat. The tilt bracket 28 is adjusted to the required front clearance angle #. The stop 39 is set to the required approach angle a measured from the zero graduation on the side 36; the stop 38 is set to the required trailing angle γ measured from the 90 degree graduation on the scale 36. The tool block 44 is turned through an angle which, together with the angle equals the required side clearance angle #. The feed screws 41, 43 are turned to bring the tool nose 55 to a position clear of the centre of curvature of the quadrant plate 31. The datum pin 60 is positioned in the stub axle 34 and raised until the reference flat is coplanar with the top face of the tool, and the datum edge 64 brought into contact with the face of the stationary wheel 15, so that the centre of curvature of the quadrant plate 31 is 0À250 ins. from the lapping plane 15a; the pin 60 is removed. To produce a radius of 0À100 ins. on the nose 55 the feed shaft 14 is axially adjusted by six complete turns of the micrometer screws 21 to bring the turret 0À150 ins. nearer to the lapping plane 15a. Thereafter it is only necessary to move the cross slide 40 so that amounts of carbide are available for satisfactory clean-up upon the approach and trailing faces 54, 53. The side clearance angle # is lapped by presenting the trailing face 53 to the lapping plane 15a with rotation of the feed shaft 14 within the limits set by the screws 22, by rotating the base-plate 35 through an angle slightly in excees of 90 degrees between the stops 38, 39, the nose radius is produced; the approach face 54 is then lapped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1638266A GB1181241A (en) | 1966-04-14 | 1966-04-14 | Improvements in or relating to Tool Lapping Machines and to Methods of Lapping Tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1638266A GB1181241A (en) | 1966-04-14 | 1966-04-14 | Improvements in or relating to Tool Lapping Machines and to Methods of Lapping Tools |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1181241A true GB1181241A (en) | 1970-02-11 |
Family
ID=10076319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1638266A Expired GB1181241A (en) | 1966-04-14 | 1966-04-14 | Improvements in or relating to Tool Lapping Machines and to Methods of Lapping Tools |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1181241A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002507A1 (en) * | 1981-01-26 | 1982-08-05 | Birger Hans Frederik Estate Of | Tool grinding machine |
CN113732631A (en) * | 2021-09-10 | 2021-12-03 | 重庆建设工业(集团)有限责任公司 | Axle dihedral angle intersection point size suspended position gauge and machining method thereof |
CN113829239A (en) * | 2021-09-28 | 2021-12-24 | 湖南诚今电梯部件制造有限公司 | Special fixture of motor cabinet equipment of polishing |
-
1966
- 1966-04-14 GB GB1638266A patent/GB1181241A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002507A1 (en) * | 1981-01-26 | 1982-08-05 | Birger Hans Frederik Estate Of | Tool grinding machine |
CN113732631A (en) * | 2021-09-10 | 2021-12-03 | 重庆建设工业(集团)有限责任公司 | Axle dihedral angle intersection point size suspended position gauge and machining method thereof |
CN113829239A (en) * | 2021-09-28 | 2021-12-24 | 湖南诚今电梯部件制造有限公司 | Special fixture of motor cabinet equipment of polishing |
CN113829239B (en) * | 2021-09-28 | 2023-11-03 | 湖南诚今电梯部件制造有限公司 | Special fixture of motor cabinet equipment of polishing |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1424927A (en) | Grinding machines | |
US1994386A (en) | Resurfacing device for surface grinding machines | |
CN204772048U (en) | Bistrique with adjustable processing angle | |
US4404774A (en) | Grinding machine with a method for securing dimensional accuracy | |
US2434834A (en) | Lathe attachment | |
US3200540A (en) | Device for grinding compound-convex surfaces | |
GB1181241A (en) | Improvements in or relating to Tool Lapping Machines and to Methods of Lapping Tools | |
US3073076A (en) | Radius cutter grinding machine | |
US4718196A (en) | Grinding machine workhead fitted with a dressing tool | |
US1871504A (en) | Truing device for the wheels of grinding machines | |
US4411105A (en) | Precision drill bit resurfacing tool | |
US2637145A (en) | Machine for forming arcuate contours | |
US3535826A (en) | Template-controlled tool grinding machines | |
US4051634A (en) | Regulating wheel pivot adjusting device | |
US2520228A (en) | Arrangement at centerless grinding machines | |
US3835589A (en) | Centerless grinding fixture for synthetic crystal rods and the like | |
US3117399A (en) | Method and apparatus for tool grinding | |
GB1475902A (en) | Tool and cutter regrinding jig | |
US1596727A (en) | Cutter grinder | |
US2390521A (en) | Machine for sharpening cutters | |
US1398187A (en) | Cutter-grinding machine | |
US4198950A (en) | Dressing device for wheels or the like | |
US2858649A (en) | Radius-grinding apparatus | |
US2207804A (en) | Drill grinder | |
JPS6354511B2 (en) |