FR2664193A1 - Lap of the expanding type - Google Patents
Lap of the expanding type Download PDFInfo
- Publication number
- FR2664193A1 FR2664193A1 FR9009067A FR9009067A FR2664193A1 FR 2664193 A1 FR2664193 A1 FR 2664193A1 FR 9009067 A FR9009067 A FR 9009067A FR 9009067 A FR9009067 A FR 9009067A FR 2664193 A1 FR2664193 A1 FR 2664193A1
- Authority
- FR
- France
- Prior art keywords
- stone
- support
- fixed
- lap
- intermediate piece
- 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.)
- Granted
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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
- B24B33/086—Abrading blocks for honing tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Pour procéder au rodage de trous cylindriques on peut utiliser des rodoirs comportant des pierres montées sur un support et constituées par exemple en carbure de silicium. Ces rodoirs présentent l'avantage de bien couper la matière et de ne pas provoquer de déformations; mais les pierres s'usent très rapidement et doivent fréquemment être remplacées.To perform the lapping of cylindrical holes, it is possible to use laps comprising stones mounted on a support and made for example of silicon carbide. These lappers have the advantage of cutting the material well and not causing deformation; but the stones wear out very quickly and must be replaced frequently.
Actuellement les pierres d'un rodoir sont collées sur le support ou simplement posées sur celui-ci.Currently the stones of a lap are glued to the support or simply placed on it.
Le collage présente l'inconvénient que, lorsqu'on change la pierre, il faut soit décoller la pierre, ce qui risque d'entraîner une détérioration du support et, en cas de recollage à chaud celle des qualités mécaniques de la pierre, soit changer également le support, ce qui augmente le cout de l'opération. Si des pierres sont simplement posées sur le support, elles peuvent être changées facilement et rapidement; mais il faut alors prévoir un élément supplémentaire pour assurer le retrait des pierres lorsque le rodoir est sorti du trou à roder et que le support se rétracte.Gluing has the disadvantage that, when changing the stone, it is necessary either to peel off the stone, which risks causing deterioration of the support and, in the event of hot bonding, that of the mechanical qualities of the stone, or to change also the support, which increases the cost of the operation. If stones are simply placed on the support, they can be changed easily and quickly; but it is then necessary to provide an additional element to ensure the removal of the stones when the lapping is out of the hole to be lapped and the support retracts.
La présente invention a pour objet un rodoir possédant des supports rappelés et les pierres peuvent être changées rapidement.The present invention relates to a lapping machine having recalled supports and the stones can be changed quickly.
Le rodoir selon l'invention est caractérisé en ce que chacune de ses pierres est maintenue sur son support par une pièce intermédiaire qui est fixée sur le support et maintient la pierre en place par serrage élastique.The lapping machine according to the invention is characterized in that each of its stones is held on its support by an intermediate piece which is fixed on the support and keeps the stone in place by elastic clamping.
On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation du rodoir selon 11 invention, avec référence au dessin annexé dans lequel
La Figure 1 est une vue en coupe transversale
d'une partie d'un rodoir;
La Figure 2 en est une coupe suivant Il-Il
de la Figure 1.An embodiment of the lapping according to the invention has been described below, by way of non-limiting example, with reference to the appended drawing in which
Figure 1 is a cross-sectional view
part of a lap;
Figure 2 is a section along Il-Il
of Figure 1.
Tel qu'il est représenté au dessin, le rodoir comporte un corps 1 dans une gorge duquel est disposé un support expansible 2 pour une pierre 3.As shown in the drawing, the lapping machine comprises a body 1 in a groove which is arranged an expandable support 2 for a stone 3.
L'expansion du support est assurée par un poignard tronconique de même pente que les supports 2 qui est monté mobile axialement dans le corps. 1. Des moyens non représentés sont prévus pour assurer la rétraction du support 2 lorsque le poignard est déplacé dans le corps 1 dans le sens; Ces moyens peuvent par exemple être mécaniques ou bien constitués par un ressort circulaire.The support is expanded by a frustoconical dagger with the same slope as the supports 2 which is mounted to move axially in the body. 1. Means not shown are provided to ensure the retraction of the support 2 when the dagger is moved in the body 1 in the direction; These means can for example be mechanical or else consist of a circular spring.
La pierre 3, qui a une section rectangulaire ou carrée, est serrée élastiquement dans des cavaliers métalliques 5, de section en U, qui sont fixés sur le support 2 par exemple par des vis ou rivets 6 et enveloppent la pierre sur trois de ses côtés; les côtés du U présentent des picots internes Sa. The stone 3, which has a rectangular or square section, is tightened elastically in metal jumpers 5, of U-shaped section, which are fixed on the support 2 for example by screws or rivets 6 and envelop the stone on three of its sides ; the sides of the U have internal pins Sa.
Le changement de la pierre 3 est très facile; il suffit d'écarter légèrement les ailes des cavaliers 5, de retirer la pierre usée et d'en remettre une nouvelle.Changing stone 3 is very easy; it is enough to slightly spread the wings of the jumpers 5, to remove the worn stone and to put in a new one.
Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté mais en couvre, au contraire, toutes les variantes. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown but, on the contrary, covers all variants thereof.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9009067A FR2664193B1 (en) | 1990-07-09 | 1990-07-09 | EXPANDABLE TYPE STONE ROD. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9009067A FR2664193B1 (en) | 1990-07-09 | 1990-07-09 | EXPANDABLE TYPE STONE ROD. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2664193A1 true FR2664193A1 (en) | 1992-01-10 |
| FR2664193B1 FR2664193B1 (en) | 1994-12-23 |
Family
ID=9398780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9009067A Expired - Fee Related FR2664193B1 (en) | 1990-07-09 | 1990-07-09 | EXPANDABLE TYPE STONE ROD. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2664193B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE19149E (en) * | 1934-04-24 | Abrasive stone holder | ||
| US2338963A (en) * | 1943-03-25 | 1944-01-11 | John J Palotce | Adjustable hone |
| GB596318A (en) * | 1944-04-22 | 1948-01-01 | Micromatic Hone Corp | Improved abrasive unit or stick for honing |
-
1990
- 1990-07-09 FR FR9009067A patent/FR2664193B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE19149E (en) * | 1934-04-24 | Abrasive stone holder | ||
| US2338963A (en) * | 1943-03-25 | 1944-01-11 | John J Palotce | Adjustable hone |
| GB596318A (en) * | 1944-04-22 | 1948-01-01 | Micromatic Hone Corp | Improved abrasive unit or stick for honing |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2664193B1 (en) | 1994-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |