GB2218362A - Grinding carriage mounting for grinding machine - Google Patents

Grinding carriage mounting for grinding machine Download PDF

Info

Publication number
GB2218362A
GB2218362A GB8909441A GB8909441A GB2218362A GB 2218362 A GB2218362 A GB 2218362A GB 8909441 A GB8909441 A GB 8909441A GB 8909441 A GB8909441 A GB 8909441A GB 2218362 A GB2218362 A GB 2218362A
Authority
GB
United Kingdom
Prior art keywords
grinding
friction
grinding table
double
kent
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.)
Withdrawn
Application number
GB8909441A
Other versions
GB8909441D0 (en
Inventor
Alfred Gromilovich
Claus Guethling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werkzeugmaschinenkombinat 7 Oktober VEB
Original Assignee
Werkzeugmaschinenkombinat 7 Oktober VEB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenkombinat 7 Oktober VEB filed Critical Werkzeugmaschinenkombinat 7 Oktober VEB
Publication of GB8909441D0 publication Critical patent/GB8909441D0/en
Publication of GB2218362A publication Critical patent/GB2218362A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/40—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using ball, roller or wheel arrangements
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Machine Tool Units (AREA)

Description

2218362 GRINDING TABLE FOR HEAVY-DUTY INTERNAL CIRCULAR GRINDING MACHINES
This invention relates to a grinding table for heavy-duty internal circular grinding machines.
Grinding tables even of internal circular grinding machines are in general relatively long structures. firstly in order to achieve a good guiding ratio. and -10 secondly in order to protect the guide from soiling.
is In recent years, particularly with heavy-duty machines, for machining short, rotationally symmetrical components, there has been a change-over to shorter grinding tables with pretensioned anti-friction guides.
If these grinding tables are to be able to take optional heavy-duty electric grinding spindles or belt-driven heavy-duty spindles with their corresponding drives, they must have a relatively wide and level mounting surface. But the requirement for short, wide grinding tables can be fulfilled only to a limited extent with the known straight-line guide technology. Another disadvantage of the pretensioned anti-friction guides common hitherto on long as well as 1, short grinding tables is deformation of the grinding table mounting surface by the pretensioning forces during assembly. According to circumstances,, this requires regrinding of the mounting surfaces in the assembled position.
It is an object of the invention to provide a grinding table with a short, wide mounting surface.
According to the invention., there is provided a grinding table for heavyduty grinding machines,, characterised in that on a grinding table adjacent to a pretensioned double-prism anti-friction narrow guide, with a guiding ratio of the length (L) of the needle cage to the distance (b) between the double-prism anti-friction narrow guides of 4:1, is disposed an anti-friction flat guide.
An advantage of the preferred grinding table of the invention is that deformation of the mounting surface by pretensioning forces during assembly is avoided.
1 3 In the preferred embodiment,, the anti-friction guide for the grinding table consists of a pretensioned anti-friction flat guide and a pretensioned. double-prism anti-friction narrow guide with a guiding ratio of the length L of its needle cage to the distance b between the double-prism anti-friction narrow guides which is 4:1. The double-prism anti-friction narrow guide is arranged close under the grinding spindle axis and thus affords very high rigidity as well as precision of grinding. The anti-friction flat guide picks up unilateral mass distribution to the double prism anti-friction narrow guide, which results from the wide grinding table for the grinding spindle and the adjacent drive motor for belt-driven grinding spindles. Arrangement of the drive for the grinding table in alignment with the overall centre of gravity assists the high guiding precision of the grinding table guide and its dynamic behaviour.
A preferred embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which Figure 1 is a section through the grinding carriage guide of a grinding machine; Figure 2 is a plan view of a grinding machine, a belt-driven grinding spindle and adjacent drive motor; Figure 3 is a side view of the carriage unit of Figure 2; and Figure 4 is a front view of the machine of Figures 2 and 3 showing the arrangement of the centres of gravity of the various component parts of the grinding machine.
Referring to Figure 1, there is shown a grinding table 1 equipped with a double-prism shaped anti-friction narrow guide 2 and a pretensioned anti-friction flat guide 3 which are arranged parallel to the grinding spindle axis (not shown) adjacent to each other. The guiding ratio of the length L of needle cage 4 to the distance b between the prism guides of the double-prism anti-friction narrow guide 2 is 4:1 (see Figures 3 and 4). The double-prism anti-friction narrow guide 2 is arranged close to and beneath the axis of rotation 5 of the grinding spindle 6. It thus affords high rigidity and precision guiding.
3 1 P The anti-friction flat guide 3 picks up the unilateral mass distribution to the double-prism anti-friction narrow guide 2, which arises in the case of belt-driven grinding spindles if, adjacent to the grinding spindle 6, the drive motor 7 is likewise arranged parallel to the grinding axis.
From Figure 4, it can be seen that the grinding table 1 and the grinding table drive 8 are arranged in such a way that the overall mass centre of gravity SgeS of the grinding table 1 with its grinding spindle 6 and drive motor 7 are vertically aligned above and in the direction of guiding with the centre of the grinding table drive 8. This guiding system has the advantage over prior art evices of allowing extremely short, wide grinding tables with higher guiding precision and higher static and dynamic rigidity. Deformation of the grinding table mounting surface by the pretensioning forces therefore does not occur.

Claims (3)

  1. CLAIMS is 1. A grinding table for heavy-duty grinding machines
    characterised in that an antifriction flat guide is disposed on the grinding table adjacent to a pretensioned double-prism anti-friction narrow guide, including a needle cage having a length (L) and a pair of narrow guides spaced apart by a distance (b), the guiding ratio of said double-prism anti-friction guide with respect to the length (L) of the needle cage to the distance (B) between the double-prism-anti-friction narrow guides being 4:1.
  2. 2. A grinding table according to claim 1, wherein the grinding table includes a table drive whose point of application is arranged in alignment with the overall centre of gravity (SgeS) of the grinding table and a grinding spindle and drive motor when mounted thereon.
    S.
    1
  3. 3. A grinding table for heavy-duty grinding machines substantially as herein described with reference to the accompanying drawings.
    Published 1989 at The Patent Office. State House, 66-71 High Holborn, London WCIR 4TP.FinLher copies maybe obtained from The Patent OMce.
    Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent, Con. 1/87 Sales Branch. St Marv Crav. OrDinmon. Kent BR5 3RD. Printed b-v MUltiDlex techniques ltd, St Mary Cray, Kent, Uon. 1/57
GB8909441A 1988-05-12 1989-04-25 Grinding carriage mounting for grinding machine Withdrawn GB2218362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD31571388A DD271871A1 (en) 1988-05-12 1988-05-12 SLIDING TABLE FOR HIGH PERFORMANCE GRINDING MACHINES

Publications (2)

Publication Number Publication Date
GB8909441D0 GB8909441D0 (en) 1989-06-14
GB2218362A true GB2218362A (en) 1989-11-15

Family

ID=5599213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8909441A Withdrawn GB2218362A (en) 1988-05-12 1989-04-25 Grinding carriage mounting for grinding machine

Country Status (4)

Country Link
DD (1) DD271871A1 (en)
DE (1) DE3908635A1 (en)
FR (1) FR2631272A1 (en)
GB (1) GB2218362A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891042C (en) * 1941-07-08 1953-09-24 Hanns Fickert Slide guide for machine tools
US3311426A (en) * 1959-11-12 1967-03-28 Jack N Binns Recirculating bearing arrangement

Also Published As

Publication number Publication date
FR2631272A1 (en) 1989-11-17
DD271871A1 (en) 1989-09-20
DE3908635A1 (en) 1989-11-16
GB8909441D0 (en) 1989-06-14

Similar Documents

Publication Publication Date Title
US5388342A (en) Assembly for supporting and guiding a movable member of a machine, particularly a measuring machine
EP0893196A3 (en) Machine tool
KR850005957A (en) Manufacturing apparatus with multiple single stations
JPS57189744A (en) Horizontal machining center
GB1507007A (en) Safety belt guide
KR910000295A (en) Automatic Table Change Machine Tool
DE3880463D1 (en) STORAGE FOR HIGH-SPEED SPINDLES OF MACHINE TOOLS.
FR2564550B1 (en) ELASTIC BEARING FOR MOTORS, MACHINE DRIVE GROUPS AND THE LIKE
EP0985489A3 (en) A machine with two spindle heads and cover apparatus therefor
DK0759839T4 (en) Plate, especially hard fiber plate
GB2218362A (en) Grinding carriage mounting for grinding machine
IT1244136B (en) PROCEDURE FOR CENTERING OR ALIGNING ROTATING SYMMETRIC PARTS ON THE MACHINING MACHINE FOR EXAMPLE A GRINDING MACHINE.
US5273366A (en) Roller linear movement guiding device
US3653159A (en) Cross-slide of a combination tool machine, in particular planing and grinding machine
EP1074333A3 (en) Lathe with two tool carrier systems
AU5484398A (en) Machine tool with a plurality of spindles
US4275625A (en) Multi-spindle lathes
JPS6186167A (en) Grinder
SU1664499A1 (en) Composite clamping device
US3595096A (en) Drill-spindle drive for high speeds
DE2420981C3 (en) Coordinate measuring machine
JP3674352B2 (en) Portal machine
JPH0238336B2 (en)
US1482856A (en) Bearing for grinding spindles
FR2696216B1 (en) BEARING FOR MOUNTING A MACHINE TOOL SPINDLE.

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)