GB2192144A - Method and apparatus for depth setting and changing tools - Google Patents

Method and apparatus for depth setting and changing tools Download PDF

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Publication number
GB2192144A
GB2192144A GB08610457A GB8610457A GB2192144A GB 2192144 A GB2192144 A GB 2192144A GB 08610457 A GB08610457 A GB 08610457A GB 8610457 A GB8610457 A GB 8610457A GB 2192144 A GB2192144 A GB 2192144A
Authority
GB
United Kingdom
Prior art keywords
drilling
tool
stop means
collar
setting
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
GB08610457A
Other versions
GB8610457D0 (en
GB2192144B (en
Inventor
David C C Handley
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.)
DORNIVER Ltd
Original Assignee
DORNIVER Ltd
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 DORNIVER Ltd filed Critical DORNIVER Ltd
Priority to GB8610457A priority Critical patent/GB2192144B/en
Publication of GB8610457D0 publication Critical patent/GB8610457D0/en
Publication of GB2192144A publication Critical patent/GB2192144A/en
Application granted granted Critical
Publication of GB2192144B publication Critical patent/GB2192144B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B23B49/003—Stops attached to drilling tools, tool holders or drilling machines
    • B23B49/005—Attached to the drill
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B23Q3/15706—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a single tool being inserted in a spindle directly from a storage device, i.e. without using transfer devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0011—Working of insulating substrates or insulating layers
    • H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

A method of setting and/or changing tools 12 on a drilling or routing machine spindle 24 comprises positioning stop means such as a collar 14 with respect to the shank of the tool. The collar is positioned at a predetermined distance from the tip of the tool by press fitting the tool into the collar. Sensing means 16 determines the relative positions of the tool and the collar. The tool and collar assembly is supported for use on a storage pod 18 which is located below the work surface 20 and raised by a mechanism 22 for insertion into the machine spindle 24. <IMAGE>

Description

SPECIFICATION Method and apparatus for setting and changing tools This invention relates to a method and apparatus for setting and/or changing tools on a machine for such operations as drilling and routing. More particularly, the invention relates to such method and apparatus for use in relation to drilling printed circuit boards and other related operations.
The invention is particularly concerned with the problems arising from the basic characteristics of machineryofthe kind employed in drilling printed circuit boards wherein drill speeds are much higher than in other machine tool operations and the drills and tools themselves are of particularly light duty characteristics. Drilling speeds of around 50,000 revolutions per minute with a drill diameter of 0.5 mil limetresaretypical forthe situations with which the invention is concerned. The problems arising from these characteristics are considerable and presently available equipment for dealing with them has several significant shortcomings.
Particular problems arise in relation to setting and changing tools on a printed circuit board drilling and routing machine.
Amongstthese problems is that of reliably setting the drilling or routing tool in relation to the drill spindle, controlling the depth of drilling and reducing the risk of damage to drilling and routing tools as a result of carelessness and/or normal wear and tear operations by the machine controller.
An objectofthe invention isto provide a method and apparatusforsetting and changing tools, with particular reference to tools for drilling and routing printed circuit boards and other light duty operations, offering improvements in relation to one or more of the matters discussed above, orgenerally.
According to the invention there is provided a method of setting and/or changing tools on a drilling or routing machine. The method comprises the step of positioning stop means such as a collar with re specttothe shank ofthe drilling or routing tool. The collar is positioned at a determined distance from the tip ofthe tool. This distance may be arranged to be always the same. The collar may be positioned in relation to the tool by press fitting the latter into the collar. Sensing means may be provided to determine the relative positions of the tool and the collar so that the tool is pressed into the collar up to a predetermined position.
The invention also provides apparatus for performing a method as defined above.
Another aspect of the invention provides a method and apparatus for setting and/or changing tools in a machinefordrilling or routing with respect to printed circuit boards and other light duty operations, comprising any novel feature or novel combination offeatures disclosed herein.
In an embodiment of the invention described below there is provided a new method of setting and changing tools on a printed circuit board drilling and routing machine. The setting and changing ofthe tools is carried out automatically by the machine.
Forsettingthetool,a collar is positioned on the shank of the tool such that when the tool is installed in the drilling spindle the distance from the end of the spindle to the tip of the tool is always the same.
Acollarisfedfrom a hoppersystem onto the machine. The required tool is collected from astor- age system and pressed into the collar. At the required position, determined by the detector, the collar is fixed onto the shank ofthetool. The tool, complete with collar, is then placed in a storage pod readyfor use.
Changing of the tools is as follows. The storage pod is located under the worktable ofthe machine in such a way that it does not impede the machine oper ator's access to the worktable in anyway.
When the machine's control system requests a tool change, an empty pod is positioned underthe spindle and then raised to receive the used tool.
The tool storage pod containing the newtool is next positioned underthe drill spindle and raised to allow the transfer of the new tool from the storage pod to the drill spindle.
In this way the setting of the tools is carried out with repetitive accuracy and tool storage pods pro tectthe tools until they are required for use.
An embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows diagrammatically, apparatus for mounting a tool in relation to a collar; and Figure2 shows a system of drilling tools mounted on associated collars ready for use in relation to a drill spindle.
As shown in the drawings a hopper feed system supplies drilling tools and collars for press fitting of the former into the latterto a predetermined position indicated by a position detector. The tool does not rotate during insertion and its position relative to the collarcan be determined with great accuracy. The collarfunctions in use as a stop to determine with precision the depth of drilling.
As shown in Figure 2 the drill bits with their assoc- iated collars are mounted on storage pods belowthe worktable surface and are thereby protected by the latter. A lifting mechanism raises the pods for insertion into a drill spindle. The latter moves across and down for coupling to the tools when required.
The entire operation of setting and changing tools is provided in an automated mannerwherebycon- trolled drilling to a precisely determined depth is possible in an automatic manner which has not hitherto been possible.
Reference is directed to the Applicant's model micromat MM 600 control system for machinetoolsfor complete details of a typical system to which the invention may be applied.
In the accompanying formal drawings the reference numerals listed below indicate those parts of the apparatus shown which were identified in the previously filed informal drawings bythetext now placed alongside those reference numerals, as fol- lows: 10: hopperfeedsystem 12:tool 14: collar 16: collar position detector 18 storage pod 20: worktable surface 22 : storage pod lifting mechanism 24: drill spindle

Claims (9)

1. A method of setting and/or changing tools on a drilling or routing machine, comprising the step of positioning stop means, such as a collar, with respectto the shank of the drilling or routing tool, the stop means being positioned at a predetermined distancefrom the tip ofthetool.
2. A method according to claim 1 wherein said stop means comprises a collar.
3. A method according to claim 1 or claim 2 wherein said stop means is positioned in relation to the tool by press fitting the latter into the stop means.
4. A method according to claim 3 wherein sensing means is provided to determine the relative positions of the tool and the stop means so thatthetool is pressed into the stop means up to a predetermined position.
5. A method according to any one ofthe preceding claims wherein said drilling or routing machine is ofthe kind employed in drilling printed circuit boards and may operate at drilling speeds of the order of 50,000 revolutions per minute and may accept drill diameters ofthe order of0.5 millimetres.
6. A method of setting and/orchanging tools on a drilling or routing machine substantially as described herein with reference to the accompanying drawings.
7. Apparatus for setting and/or changing tools on a driIling#r routing machine, the apparatuscompris- ing stop means, such as a collar, which is positionable with respecttotheshankofa drilling or routing tool,thestopbeing positionable at a predetermined distance from the tip ofthetool.
8. Apparatus according to claim 7furthercomprising sensing means to determine relative posi tions ofthetool and the stop means so that the tool can be set at a predetermined position.
9. Apparatus for setting and/or changing tools on a drilling or routing machine substantially as described herein with reference to the accompanying drawings.
GB8610457A 1986-04-29 1986-04-29 Method and apparatus for setting and changing tools Expired - Fee Related GB2192144B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8610457A GB2192144B (en) 1986-04-29 1986-04-29 Method and apparatus for setting and changing tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8610457A GB2192144B (en) 1986-04-29 1986-04-29 Method and apparatus for setting and changing tools

Publications (3)

Publication Number Publication Date
GB8610457D0 GB8610457D0 (en) 1986-06-04
GB2192144A true GB2192144A (en) 1988-01-06
GB2192144B GB2192144B (en) 1990-06-06

Family

ID=10597039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8610457A Expired - Fee Related GB2192144B (en) 1986-04-29 1986-04-29 Method and apparatus for setting and changing tools

Country Status (1)

Country Link
GB (1) GB2192144B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134732A1 (en) * 1991-10-21 1993-04-22 Kaufbeurer Leiterplatten METHOD FOR CLAMPING THE DRILLING OR MILLING TOOLS OF A BOARD DRILLING MACHINE WITH A DEFINED FREE TOOL LENGTH IN THE DRILLING SPINDLE PROVIDED WITH A CLAMP

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115008250B (en) * 2022-06-27 2023-08-22 南通纳侬精密机械有限公司 Numerical control machine tool capable of self-diagnosing faults

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB530933A (en) * 1939-07-06 1940-12-24 Joachim Giardino Covered joint piston rings
GB840701A (en) * 1958-07-12 1960-07-06 Thos R Ellin Footprint Works L Improvements in or relating to drill bits
GB923806A (en) * 1961-02-24 1963-04-18 Rawlplug Co Ltd Improvements in drills and like tools
US4039266A (en) * 1976-07-19 1977-08-02 Connell John W O Combination stop collar and cutting tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006519A1 (en) * 1986-04-22 1987-11-05 Eltek Holdings Pty. Ltd. Timber reamer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB530933A (en) * 1939-07-06 1940-12-24 Joachim Giardino Covered joint piston rings
GB840701A (en) * 1958-07-12 1960-07-06 Thos R Ellin Footprint Works L Improvements in or relating to drill bits
GB923806A (en) * 1961-02-24 1963-04-18 Rawlplug Co Ltd Improvements in drills and like tools
US4039266A (en) * 1976-07-19 1977-08-02 Connell John W O Combination stop collar and cutting tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134732A1 (en) * 1991-10-21 1993-04-22 Kaufbeurer Leiterplatten METHOD FOR CLAMPING THE DRILLING OR MILLING TOOLS OF A BOARD DRILLING MACHINE WITH A DEFINED FREE TOOL LENGTH IN THE DRILLING SPINDLE PROVIDED WITH A CLAMP
EP0538642A2 (en) * 1991-10-21 1993-04-28 KLG Electronic Gesellschaft mbH Process for clamping, with a defined free working length, a drilling or milling tool of a circuit board drilling machine in the collet equipped drilling spindle of that machine
EP0538642A3 (en) * 1991-10-21 1993-05-26 Klg Electronic Gesellschaft Mbh Process for clamping, with a defined free working length, a drilling or milling tool of a circuit board drilling machine in the collet equipped drilling spindle of that machine

Also Published As

Publication number Publication date
GB8610457D0 (en) 1986-06-04
GB2192144B (en) 1990-06-06

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Legal Events

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

Effective date: 19960429