Manual lapping rods
Lapping rods M.M.®, shapes As A, B, C et Lapidaries
Lapping rods M.M.®
Immediately shape your rods in all form, from patented M.M.® preliminary shape containing no abrasive.
Applications
For internal and external lapping, and super finishing of spherical, conical and cylindrical parts and many other shapes.
The solution
LAM PLAN offers an original, functional and adapted solution; it responds to the requirements of surface conditions difficult to attain with tools or grinding wheels. LAM PLAN delivers its rods in preliminary shape condition. The user finalises the form of his choice.
A fast machining using common tools (never a grinding wheel) allows adapting the rods to the shapes of the parts to be lapped and then proceeding with the lapping- polishing ion machines or manually in some cases. This technique is possible thanks to the LAM PLAN M.M.® which combines rods and free diamond abrasives.
The technique
The LAM PLAN M.M.® rods consists of two different materials in terms of mechanical, physical and resistance characteristics. The composition and arrangement of the two components associated with the usage of specific diamond abrasive is the base of the patented LAM PLAN M.M® system and its effectiveness.
The advantages of the LAM PLAN M.M.® system associated with Bio DIAMANT®
The LAM PLAN M.M.® system uses special abrasives. A chemical binder allows homogeneous, stable distribution of calibrated diamond grains, while preventing any settling phenomenon. As soon as the rod starts rotating under the effect of the applied pressure and the passage on the two different materials, the diamond grains move and fix alternatively. This causes a phenomenon of significant acceleration of these particles ensuring a high stock removal. Penetrating very low and for a very short time in the rod’s metal mass, each diamond particle always presents an edge opposite to the part to be machined.
All the cutting edges work under an over speed. The abrasive’s efficiency is therefore better and more sustainable.
In addition, thanks to the use of diamond, the rod coating does practically not wear out (good behaviour in terms of shape or inherent flatness).
The LAM PLAN type M.M.® lubricant vaporised in a very small quantity allows cleaning the diamond’s cutting edges loaded with metal waste and operates cooling action.
The small quantity of lubricant significantly reduces the “machining sludge” volume. The work is cleaner and produces less waste.
Qualities
In order to obtain surface conditions varying from 0.2 to 0.01 micron/Ra, LAM PLAN proposes various types of rods. The distribution of the 2 materials which make up the patented bi-component rods type M.M.® remains constant, regardless of the shape given to them. The rods type 2000 are mono-components. They benefit from the quality of bi-component materials, but their efficiency is lower and their wear more rapid.
| Types |
|
| Patented M.M. Rods Bi-components |
M.M.® 980 lapping |
| M.M.® 991 finishing | |
| M.M.® 992 superfinishing | |
| Economic range Mono-component |
2002 lapping |
| 2003 polishing |
Rods M.M.® shape A
Cylindrical preliminary shape intended to be machined by turning with a dry carbide tool in order to adapt to the parts to be treated.
| Implementation example |
||||
Lapped part |
Material |
Rod |
Abrasive |
Result |
| Cupule for thigh prosthesis | Chromium cobalt | Shape A Type 992 |
Stick M.M. 143 |
Sphericity 3 µm |
| Type |
Ø in mm | Ref. |
| 991 | 25 x 100 | 09 09991 28 |
| 992 | 25 x 100 | 09 09992 28 |
| 2002 | 25 x 100 | 09 20022 20 |
| 2003 | 25 x 100 | 09 20032 20 |
| 980 | 50 x 50 | 09 09980 10 |
| 991 | 50 x 50 | 09 09991 10 |
| 992 | 50 x 50 | 09 09992 10 |
| 2002 | 50 x 50 | 09 20021 10 |
| 2003 | 50 x 50 | 09 20031 10 |
| 2002 | 50 x 100 | 09 20022 10 |
| 2003 | 50 x 100 | 09 20032 10 |
| 2002 | 50 x 150 | 09 20023 10 |
| 2003 | 50 x 150 | 09 20033 10 |
| 980 | 75 x 50 | 09 09980 80 |
| 991 | 75 x 50 | 09 09991 80 |
| 992 | 75 x 50 | 09 09992 80 |
| 2002 | 75 x 50 | 09 20021 80 |
| 2003 | 75 x 50 | 09 20031 80 |
| 2002 | 75 x 100 | 09 20022 80 |
| 2003 | 75 x 100 | 09 20032 80 |
| 2002 | 75 x 150 | 09 20023 80 |
| 2003 | 75 x 150 | 09 20033 80 |
| 2002 | 100 x 50 | 09 20021 90 |
| 2003 | 100 x 50 | 09 20031 90 |
| 2002 | 100 x 100 | 09 20022 90 |
| 2003 | 100 x 100 | 09 20032 90 |
| 2002 | 100 x 150 | 09 20023 90 |
| 2003 | 100 x 150 | 09 20033 90 |
Custom machining package
| Designation |
Qty. | Ref. |
| Custom machining package | 1 | 99 SAV0F 00 |
Rods M.M.® shape B
Our Shape B rods are composed of a 5 mm active part fixed to a steel* ensuring great rigidity. Please contact us for dimensions above 200 mm. To machine the rods and use them, the shapes A or B must be tightened in a mandrel one turn mounted on a metal rod (by tapping or gluing).
NOT: The tapping must always remain below the steel* thickness in the case of shapes B.
In any case (shapes A or B), the centre of the coating has to be cleared to avoid the dead point. During shaping, it is recommended to recover the chips and dusts to reduce the cleaning time.
*aluminium base on demand
| Implementation example |
||||
Lapped part |
Material |
Rod |
Abrasive |
Result |
| Safety valve | Satellite | Shape B Type 991 |
Stick M.M.141 |
Tightness |
| Type |
Ø in mm | Ref. |
| 980 | 50 x 15 | 09 09980 30 |
| 991 | 50 x 15 | 09 09991 30 |
| 992 | 50 x 15 | 09 09992 30 |
| 2002 | 50 x 15 | 09 02002 30 |
| 2003 | 50 x 15 | 09 02003 30 |
| 980 | 100 x 15 | 09 09980 40 |
| 991 | 100 x 15 | 09 09991 40 |
| 992 | 100 x 15 | 09 09992 40 |
| 2002 | 100 x 15 | 09 02002 40 |
| 2003 | 100 x 15 | 09 02003 40 |
| 980 | 150 x 15 | 09 09980 50 |
| 991 | 150 x 15 | 09 09991 50 |
| 992 | 150 x 15 | 09 09992 50 |
| 2002 | 150 x 15 | 09 02002 50 |
| 2003 | 150 x 15 | 09 02003 50 |
| 980 | 200 x 15 | 09 09980 60 |
| 991 | 200 x 15 | 09 09991 60 |
| 992 | 200 x 15 | 09 09992 60 |
| 2002 | 200 x 15 | 09 02002 60 |
| 2003 | 200 x 15 | 09 02003 60 |
Custom machining package
| Designation |
Qty. | Ref. |
| Custom machining package | 1 | 99 SAV0F 00 |
Lapidary M.M.® shape C
Intended to prepare the rods for the machine of special shaped parts.
| Implementation example |
||||
Lapped part |
Material |
Rod |
Abrasive |
Result |
| Rolling machine cylinder | Fonte | Shape C Type 980 |
Stick M.M.133 |
Roughness Ra 0,08 |
| 3 units | ||
| Types |
Dim. (mm) | Ref. |
| 980 | 10 x 20 x 560 | 09 08445 30 |
| 991 | 10 x 20 x 560 | 09 08446 30 |
| 992 | 10 x 20 x 560 | 09 08449 30 |
Custom machining package
| Designation |
Qty. | Ref. |
| Custom machining package | 1 | 99 SAV0F 00 |
Expandable cylindric rods
The formula for the accuracy of borings.
The set is composed of:
- A conical shaft to be mounted on the mandrel.
- A cast iron rod with pinched structure. A helical slot allows the expansion while maintaining its geometric shape. The rod’s interior is conical in order to receive the shaft.
- A tube-shaped pushrod is here allows driving the rod on the shaft.
Procedure
The abrasives to be used with the rods is selected according to their tasks:
- Important stock removal: diamond dosing stick M.M.132
- Super-finishing : diamond dosing stick M.M.142 or 144
Lubrication thanks to the M.M.712 fluid.
Use
Results
A 15,9 mm diameter has been drilled on a 38 mm length.
After checking, an ovalisation of 4/100th mm has been revelled and a surface condition of 0.5-micron Ra.
First operation
With rod and diamond
dosing stick M.M.132: ovalisation reduced to 4/10th micron. surface condition of 0.12-micron Ra..
Second operation
With rod and diamond dosing stick M.M.144: limited ovalisation to 1/10th micron. Surface condition to 0.03-
micron Ra.
Guidance
Example of implementation
+33 (0)4 50 43 96 30