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GB2178983A - Machine tool alignment systems - Google Patents
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GB2178983A - Machine tool alignment systems - Google Patents

Machine tool alignment systems Download PDF

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Publication number
GB2178983A
GB2178983A GB08518071A GB8518071A GB2178983A GB 2178983 A GB2178983 A GB 2178983A GB 08518071 A GB08518071 A GB 08518071A GB 8518071 A GB8518071 A GB 8518071A GB 2178983 A GB2178983 A GB 2178983A
Authority
GB
United Kingdom
Prior art keywords
sub
slide
assembly
assemblies
bolts
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
Application number
GB08518071A
Other versions
GB2178983B (en
GB8518071D0 (en
Inventor
Eric Jeffrey Wightman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08518071A priority Critical patent/GB2178983B/en
Publication of GB8518071D0 publication Critical patent/GB8518071D0/en
Publication of GB2178983A publication Critical patent/GB2178983A/en
Application granted granted Critical
Publication of GB2178983B publication Critical patent/GB2178983B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/12—Arrangements for adjusting play
    • 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
    • B23Q1/262—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 with means to adjust the distance between the relatively slidable members
    • 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
    • B23Q1/28—Means for securing sliding members in any desired position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/002—Elastic or yielding linear bearings or bearing supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

In a machine tool alignment system, the working clearance between the fixed slides S1, S2 and moving slides F1, F2 respectively is adjustable by means of a resilient elastic member E acted upon by adjusting bolts B1. After adjustment the slide members may be clamped by further bolts B2 to lock the working clearance in a fixed state. <IMAGE>

Description

SPECIFICATION improvements in machine tool alignment systems I, Eric Jeffrey Wightman of Ejay Technology Ltd., 2 High Street, Datchet, Berkshire, SL3 9EA a British Subject, do hereby declare the invention, for which I pray a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a machine tool alignment system for adjusting the juxtapositions of items comprising the working slides of the machine.
Conventional machine tools for example of the turning, milling, drilling and grinding types are fabricated from sub assemblies which are either permanently fixed to each other or are arranged to slide relatively to each other in linear repeatable ways.
It is customary to machine the mating surfaces of each sub-assembly to close tolerances within the limits of the machine used and to subsequently fit the sub-assemblies together. The fitting operation may require the further removal of metal by hand, an operation typically known as scraping, in order to achieve correct alignment of one sub-assembly relative to another. Finally, in the case of one sub-assembly which is required to slide on another, the clearances have to be set to enable relative motion to be obtained with the minimum of friction and play between working surfaces. This latter operation requires the use of adjustable members which are usually tapered and referred to as "Gib Strips". The operation is typically time consuming and requires a measure of skill.
According to the present invention illustrated schematically in Figure 1 two sub-assemblies which are arranged to slide relative to each other are designated Al and A2 on slides S1 and S2 respectively. The slides may be of any conventional cross section but are shown as inverted "V" section by way of example.
Each slide comprises a fixed male member mating with a corresponding female member. In the example shown in Figure 1 the female members comprising S1 and S2, shown as F1 and F2, are detachable to facilitate manufacture and assembly. Thus by permanently securing slide member F1 for example, and arranging adjustable means of securing member F2, the necessary clearances between S1 and S2 may be set.
The novelty in the present invention relies on the use of a resilient elastic interface E interposed between member F2 and Al. The interface may consist of a resilient elastic material shaped in the form of a strip or pad of synthetic rubber composition for example. The slide member F2 is secured to Al in two planes by two rows of bolts B1 and B2. Row B1 bolts are used to clamp F2 to Al and squeeze the interface E to enable correct working clearance between S1 and S2 to be achieved. Row B2 bolts are used to clamp F2 securely to Al by friction to prevent subsequent disturbance to the setting.Dowels D1 may be added when the desired clearances have been obtained, to satisfy requirements for good engineering practice, alternatively an adhesive may be applied between F2 and Al before assembly, to prevent movement of F2 after adjustment of bolts B1, clamping by tightening bolts B2.
1. A machine tool alignment system relying upon the use of a flexible interface between members comprising the sub-assemblies.
2. An alignment system as claimed in 1 with means for compressing a flexible interface between adjoining sub-assemblies, to effect a variation in distance and hence alignment between the two sub-assemblies.
3. An alignment system as claimed in 1 and 2 for enabling one sub-assembly to be aligned relatively to another sub-assembly and secured from subsequent movement.
4. An alignment system as claimed in 1 and 2 for enabling one sub-assembly to be aligned relatively to another sub-assembly to permit sliding motion between the sub-assemblies.
CLAIMS 1. Method of adjusting the working clearance of a slide whereby two sub-assemblies slide relatively to one another comprising inserting a resilient elastic interface between one slide element and its subassembly, adjusting bolts securing the slide element to the sub-assembly so as to squeeze the interface and obtain correct working clearance for the slide, and securing the slide element to the sub-assembly so as prevent subsequent disturbance to the setting.
2. Method according to Claim 1 of adjusting the working clearance of a slide in which the interface comprises a strip or pad of synthetic rubber.
3. Method according to Claim 1 or Claim 2 of adjusting the working clearance of a slide in which the slide element is secured by means of clamping bolts perpendicular to the adjusting bolts.
4. Method according to any preceding claim of adjusting the working clearance of a slide in which the slide element is secured by means of adhesive.
5. Method according to Claim 3 or Claim 4 of adjusting the working clearance of a slide in which the slide element is further secured by means of dowels.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION improvements in machine tool alignment systems I, Eric Jeffrey Wightman of Ejay Technology Ltd., 2 High Street, Datchet, Berkshire, SL3 9EA a British Subject, do hereby declare the invention, for which I pray a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a machine tool alignment system for adjusting the juxtapositions of items comprising the working slides of the machine. Conventional machine tools for example of the turning, milling, drilling and grinding types are fabricated from sub assemblies which are either permanently fixed to each other or are arranged to slide relatively to each other in linear repeatable ways. It is customary to machine the mating surfaces of each sub-assembly to close tolerances within the limits of the machine used and to subsequently fit the sub-assemblies together. The fitting operation may require the further removal of metal by hand, an operation typically known as scraping, in order to achieve correct alignment of one sub-assembly relative to another. Finally, in the case of one sub-assembly which is required to slide on another, the clearances have to be set to enable relative motion to be obtained with the minimum of friction and play between working surfaces. This latter operation requires the use of adjustable members which are usually tapered and referred to as "Gib Strips". The operation is typically time consuming and requires a measure of skill. According to the present invention illustrated schematically in Figure 1 two sub-assemblies which are arranged to slide relative to each other are designated Al and A2 on slides S1 and S2 respectively. The slides may be of any conventional cross section but are shown as inverted "V" section by way of example. Each slide comprises a fixed male member mating with a corresponding female member. In the example shown in Figure 1 the female members comprising S1 and S2, shown as F1 and F2, are detachable to facilitate manufacture and assembly. Thus by permanently securing slide member F1 for example, and arranging adjustable means of securing member F2, the necessary clearances between S1 and S2 may be set. The novelty in the present invention relies on the use of a resilient elastic interface E interposed between member F2 and Al. The interface may consist of a resilient elastic material shaped in the form of a strip or pad of synthetic rubber composition for example. The slide member F2 is secured to Al in two planes by two rows of bolts B1 and B2. Row B1 bolts are used to clamp F2 to Al and squeeze the interface E to enable correct working clearance between S1 and S2 to be achieved. Row B2 bolts are used to clamp F2 securely to Al by friction to prevent subsequent disturbance to the setting.Dowels D1 may be added when the desired clearances have been obtained, to satisfy requirements for good engineering practice, alternatively an adhesive may be applied between F2 and Al before assembly, to prevent movement of F2 after adjustment of bolts B1, clamping by tightening bolts B2. CLAIMS 1. A machine tool alignment system relying upon the use of a flexible interface between members comprising the sub-assemblies. 2. An alignment system as claimed in 1 with means for compressing a flexible interface between adjoining sub-assemblies, to effect a variation in distance and hence alignment between the two sub-assemblies. 3. An alignment system as claimed in 1 and 2 for enabling one sub-assembly to be aligned relatively to another sub-assembly and secured from subsequent movement. 4. An alignment system as claimed in 1 and 2 for enabling one sub-assembly to be aligned relatively to another sub-assembly to permit sliding motion between the sub-assemblies. CLAIMS
1. Method of adjusting the working clearance of a slide whereby two sub-assemblies slide relatively to one another comprising inserting a resilient elastic interface between one slide element and its subassembly, adjusting bolts securing the slide element to the sub-assembly so as to squeeze the interface and obtain correct working clearance for the slide, and securing the slide element to the sub-assembly so as prevent subsequent disturbance to the setting.
2. Method according to Claim 1 of adjusting the working clearance of a slide in which the interface comprises a strip or pad of synthetic rubber.
3. Method according to Claim 1 or Claim 2 of adjusting the working clearance of a slide in which the slide element is secured by means of clamping bolts perpendicular to the adjusting bolts.
4. Method according to any preceding claim of adjusting the working clearance of a slide in which the slide element is secured by means of adhesive.
5. Method according to Claim 3 or Claim 4 of adjusting the working clearance of a slide in which the slide element is further secured by means of dowels.
GB08518071A 1985-07-17 1985-07-17 Improvements in machine tool alignment systems Expired GB2178983B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08518071A GB2178983B (en) 1985-07-17 1985-07-17 Improvements in machine tool alignment systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08518071A GB2178983B (en) 1985-07-17 1985-07-17 Improvements in machine tool alignment systems

Publications (3)

Publication Number Publication Date
GB8518071D0 GB8518071D0 (en) 1985-08-21
GB2178983A true GB2178983A (en) 1987-02-25
GB2178983B GB2178983B (en) 1988-11-02

Family

ID=10582435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08518071A Expired GB2178983B (en) 1985-07-17 1985-07-17 Improvements in machine tool alignment systems

Country Status (1)

Country Link
GB (1) GB2178983B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277560A (en) * 1993-04-30 1994-11-02 Itp Limited Adjustable bearing and machine slide
WO2001068315A1 (en) * 2000-03-17 2001-09-20 Festo Ag & Co. Linear drive unit
EP1468779A1 (en) * 2003-04-14 2004-10-20 " Promotech"- Spolka zo.o Adjustment of slideway tightness in drilling machines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB345380A (en) * 1929-07-24 1931-03-26 Alonzo Galloway Decker Improvements in or relating to spring gibs
GB873311A (en) * 1957-02-05 1961-07-19 Schaeffler Wilhelm Improvements in or relating to self-aligning needle bearings
GB949061A (en) * 1959-03-16 1964-02-12 Cam Gears Ltd A new or improved bearing unit
GB1032547A (en) * 1964-10-03 1966-06-08 Saginaw Machine And Tool Compa Slide assembly
GB1049975A (en) * 1964-11-18 1966-11-30 Lamalocks Ltd Improvements in or relating to fluid operated thrust units
GB1220106A (en) * 1967-05-26 1971-01-20 Alois Lodige A rectilinear-motion bearing assembly
GB1315464A (en) * 1970-02-11 1973-05-02 Kober Ag Rocking bearing for bridges and like structures
US4279451A (en) * 1978-12-19 1981-07-21 Aktiebolaget Skf Device for obtaining axial mobility and avoiding radial play of a bearing ring in relation to a bearing seat

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB345380A (en) * 1929-07-24 1931-03-26 Alonzo Galloway Decker Improvements in or relating to spring gibs
GB873311A (en) * 1957-02-05 1961-07-19 Schaeffler Wilhelm Improvements in or relating to self-aligning needle bearings
GB949061A (en) * 1959-03-16 1964-02-12 Cam Gears Ltd A new or improved bearing unit
GB1032547A (en) * 1964-10-03 1966-06-08 Saginaw Machine And Tool Compa Slide assembly
GB1049975A (en) * 1964-11-18 1966-11-30 Lamalocks Ltd Improvements in or relating to fluid operated thrust units
GB1220106A (en) * 1967-05-26 1971-01-20 Alois Lodige A rectilinear-motion bearing assembly
GB1315464A (en) * 1970-02-11 1973-05-02 Kober Ag Rocking bearing for bridges and like structures
US4279451A (en) * 1978-12-19 1981-07-21 Aktiebolaget Skf Device for obtaining axial mobility and avoiding radial play of a bearing ring in relation to a bearing seat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277560A (en) * 1993-04-30 1994-11-02 Itp Limited Adjustable bearing and machine slide
WO2001068315A1 (en) * 2000-03-17 2001-09-20 Festo Ag & Co. Linear drive unit
US6792845B2 (en) 2000-03-17 2004-09-21 Festo Ag & Co. Linear drive unit
EP1468779A1 (en) * 2003-04-14 2004-10-20 " Promotech"- Spolka zo.o Adjustment of slideway tightness in drilling machines

Also Published As

Publication number Publication date
GB2178983B (en) 1988-11-02
GB8518071D0 (en) 1985-08-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee