US2340383A - Lapping tool - Google Patents
Lapping tool Download PDFInfo
- Publication number
- US2340383A US2340383A US454992A US45499242A US2340383A US 2340383 A US2340383 A US 2340383A US 454992 A US454992 A US 454992A US 45499242 A US45499242 A US 45499242A US 2340383 A US2340383 A US 2340383A
- Authority
- US
- United States
- Prior art keywords
- lapping tool
- lap
- lapping
- roughing
- per cent
- 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 - Lifetime
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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/12—Lapping plates for working plane surfaces
- B24B37/14—Lapping plates for working plane surfaces characterised by the composition or properties of the plate materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S451/00—Abrading
- Y10S451/905—Metal lap
Definitions
- This invention relates to lapping tools and the like, and to compositions therefor, this application being a division of my pending application Serial No. 267,127, filed April 10, 1939.
- My invention contemplates a lapping tool particularly adapted for use as a roughing lap with suitable granular abrasive to initiate the finishing operation upon hard objects such as metal-working rolls and the like.
- This lap is used to best advantage with abrasive grain from 240-600 mesh.
- the desirable characteristics attributable to the metals specified are those which will provide sufficient mechanical strength to enable the grain to cut, and yet, which will be soft enough to charge with abrasives, and sufficiently granular to wear away so as to obviat bunching or seizing of the cuttings and abrasive grains;
- a lapping tool composed 10 which will also provide a surface of the requisite of a friable metal composition produces highly porosity to receive the latter in order that they satisfactory results for the purpose stated, and may be retired harmlessly from pressure contact that antimonial lead of substantially the followwith the surface of the work. in proportions is particularly suitable for such Various changes and modifications are contema roughing lap when molded into block form: 15 plated within the scope of the following claim.
- a roughing lap comprising a friable composition of substantially 65 per cent lead and 35 per cent antimony, by weight, molded into block 2 form, characterized by having suificient strength
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Patented Feb. 1, 1944 LAPPING TOOL Foster F. Hillix, Lakewood, Ohio, assignor to The American Steel and Wire Company of New Jersey, a corporation of New Jersey No Drawing. Original application April 10, 1939,
Serial No. 267,127.
1 Claim.
This invention relates to lapping tools and the like, and to compositions therefor, this application being a division of my pending application Serial No. 267,127, filed April 10, 1939.
My invention contemplates a lapping tool particularly adapted for use as a roughing lap with suitable granular abrasive to initiate the finishing operation upon hard objects such as metal-working rolls and the like.
Divided and this application August 15, 1942, Serial No. 454,992
This lap is used to best advantage with abrasive grain from 240-600 mesh.
The desirable characteristics attributable to the metals specified are those which will provide sufficient mechanical strength to enable the grain to cut, and yet, which will be soft enough to charge with abrasives, and sufficiently granular to wear away so as to obviat bunching or seizing of the cuttings and abrasive grains; and
I have discovered that a lapping tool composed 10 which will also provide a surface of the requisite of a friable metal composition produces highly porosity to receive the latter in order that they satisfactory results for the purpose stated, and may be retired harmlessly from pressure contact that antimonial lead of substantially the followwith the surface of the work. in proportions is particularly suitable for such Various changes and modifications are contema roughing lap when molded into block form: 15 plated within the scope of the following claim.
Per cent by weight Lead 65 Antimony 35 This material is brittle and is hard enough to withstand suflicient pressure to make the coarser grains cut, but wears away fast enough to prevent the material from bunching on the face of the lap and producing streaks on the roll.
I claim:
A roughing lap comprising a friable composition of substantially 65 per cent lead and 35 per cent antimony, by weight, molded into block 2 form, characterized by having suificient strength
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US454992A US2340383A (en) | 1939-04-10 | 1942-08-15 | Lapping tool |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26712739A | 1939-04-10 | 1939-04-10 | |
| US454992A US2340383A (en) | 1939-04-10 | 1942-08-15 | Lapping tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2340383A true US2340383A (en) | 1944-02-01 |
Family
ID=26952235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US454992A Expired - Lifetime US2340383A (en) | 1939-04-10 | 1942-08-15 | Lapping tool |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2340383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051316A (en) * | 1989-05-25 | 1991-09-24 | Taiho Kogyo Co., Ltd. | Overlay alloy or plain bearing |
-
1942
- 1942-08-15 US US454992A patent/US2340383A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051316A (en) * | 1989-05-25 | 1991-09-24 | Taiho Kogyo Co., Ltd. | Overlay alloy or plain bearing |
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