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
Economic range Mono-component	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

Types	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

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

Types	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

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

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

lamplan rodagepolissage supports rodoirscylindriquesfig1 en

Results

lamplan rodagepolissage supports rodoirscylindriquesfig1

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.

Expandable cylindric rods

Ø (mm)	Lenght E (mm)	Expansion D (mm)	Ref.
1,19	12,70	1,168 à 1,397	99 91011 90
1,59	15,85	1,574 à 1,930	99 91015 90
1,98	15,85	1,956 à 2,311	99 91019 80
2,38	19,05	2,362 à 2,743	99 91023 80
2,78	19,05	2,743 à 3,099	99 91027 80
3,17	22,19	3,149 à 3,479	99 91031 70
3,57	22,19	3,530 à 3,886	99 91035 70
3,97	22,19	3,937 à 4,318	99 91039 70
4,37	22,19	4,318 à 4,673	99 91043 70
4,76	34,91	4,724 à 5,105	99 91047 60
5,16	34,91	5,130 à 5,461	99 91051 60
5,56	44,45	5,537 à 5,918	99 91055 60
5,95	44,45	5,918 à 6,248	99 91059 50
6,35	50,80	6,324 à 6,705	99 91063 50
6,75	50,80	6,731 à 7,010	99 91067 50
7,14	50,80	7,112 à 7,340	99 91071 40
7,54	50,80	7,518 à 7,670	99 91075 40
7,94	50,80	7,924 à 8,305	99 91079 40
8,33	50,80	8,305 à 8,610	99 91083 30
8,73	50,80	8,712 à 8,915	99 91087 30
9,13	50,80	9,093 à 9,245	99 91091 30
9,53	63,50	9,499 à 9,855	99 91095 30
9,92	63,50	9,906 à 10,185	99 91099 20
10,32	63,50	10,287 à 10,515	99 91103 20
10,72	63,50	10,693 à 10,845	99 91107 20
11,11	63,50	11,074 à 11,430	99 91111 10
11,51	63,50	11,480 à 11,785	99 91115 10
11,91	63,50	11,861 à 12,090	99 91119 10
12,30	63,50	12,268 à 12,420	99 91123 00
12,70	82,55	12,674 à 13,081	99 91127 00
13,49	82,55	13,462 à 13,868	99 91134 90
14,29	82,55	14,249 à 14,579	99 91142 90
15,08	82,55	15,062 à 15,290	99 91150 80
15,88	82,55	15,849 à 16,256	99 91158 80
16,67	82,55	16,637 à 16,941	99 91166 70
17,46	82,55	17,424 à 17,627	99 91174 60
18,26	82,55	18,237 à 18,415	99 91182 60
19,05	88,90	19,024 à 19,380	99 91190 50
19,84	88,90	19,812 à 20,116	99 91198 40
20,64	88,90	20,599 à 20,853	99 91206 40
21,43	88,90	21,412 à 21,615	99 91214 30
22,23	88,90	22,199 à 22,580	99 91222 30
23,02	88,90	22,987 à 23,342	99 91230 20
23,81	88,90	23,774 à 24,079	99 91238 10
24,61	88,90	24,587 à 24,790	99 91246 10

Conical shafts

N°	Ø A (mm)	Lenght B (mm)	Lenght C (mm)	Ref.
4/0	3,17	19,05	39,10	99 92004 00
3/0	3,17	19,05	39,10	99 92003 00
2/0	3,17	19,05	41,25	99 92002 00
0	3,17	19,05	44,45	99 92000 00
1	4,74	25,40	69,85	99 92000 10
2	4,76	25,40	76,20	99 92000 20
3	4,76	25,40	101,60	99 92000 30
4	5,53	25,40	101,60	99 92000 40
5	9,79	38,10	127,00	99 92000 50
6	7,90	38,10	127,00	99 92000 60
7	9,51	38,10	152,40	99 92000 70
8	10,27	38,10	152,40	99 92000 80
9	12,70	50,80	177,80	99 92000 90
10	12,70	50,80	177,80	99 92001 00

Tappets

N°	Ref.
4/0	99 93004 00
3/0	99 93003 00
2/0	99 93002 00
0	99 93000 00
1	99 93000 10
2	99 93000 20
3	99 93000 30
4	99 93000 40
5	99 93000 50
6	99 93000 60
7	99 93000 70
8	99 93000 80
9	99 93000 90
10	99 93001 00