DE248638C - - Google Patents
Info
- Publication number
- DE248638C DE248638C DENDAT248638D DE248638DA DE248638C DE 248638 C DE248638 C DE 248638C DE NDAT248638 D DENDAT248638 D DE NDAT248638D DE 248638D A DE248638D A DE 248638DA DE 248638 C DE248638 C DE 248638C
- Authority
- DE
- Germany
- Prior art keywords
- needle
- borehole
- tip
- pressure
- walls
- 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.)
- Active
Links
- 239000004575 stone Substances 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010437 gem Substances 0.000 claims description 2
- 238000005491 wire drawing Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 229910001751 gemstone Inorganic materials 0.000 claims 1
- 210000001847 Jaw Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE248638C true DE248638C (zh) |
Family
ID=507328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT248638D Active DE248638C (zh) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE248638C (zh) |
-
0
- DE DENDAT248638D patent/DE248638C/de active Active
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