GB1456679A - Drilling or screw-thread cutting unit - Google Patents

Drilling or screw-thread cutting unit

Info

Publication number
GB1456679A
GB1456679A GB5843073A GB5843073A GB1456679A GB 1456679 A GB1456679 A GB 1456679A GB 5843073 A GB5843073 A GB 5843073A GB 5843073 A GB5843073 A GB 5843073A GB 1456679 A GB1456679 A GB 1456679A
Authority
GB
United Kingdom
Prior art keywords
spindle
valve
hydraulic
drilling
cam
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.)
Expired
Application number
GB5843073A
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.)
LECHLER APPARATEBAU KG
Original Assignee
LECHLER APPARATEBAU KG
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 LECHLER APPARATEBAU KG filed Critical LECHLER APPARATEBAU KG
Publication of GB1456679A publication Critical patent/GB1456679A/en
Expired 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/26—Fluid-pressure drives
    • B23Q5/261—Fluid-pressure drives for spindles
    • B23Q5/263—Fluid-pressure drives for spindles with means to control the feed rate by controlling the fluid flow
    • B23Q5/265—Fluid-pressure drives for spindles with means to control the feed rate by controlling the fluid flow this regulation depending upon the position of the tools or work
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Drilling And Boring (AREA)

Abstract

1456679 Drilling and screw-cutting machines LECHLER APPARATEBAU KG 17 Dec 1973 [3 Feb 1973] 58430/73 Headings B3C and B3N [Also in Division F1] A drilling and screwcutting unit comprises a casing 10, a spindle 12 mounted therein and rotated by an electric motor 14, and a pneumatic-hydraulic control 18, 17, for the spindle, which provides a fast approach and slow working feed, the feed rate being controlled by an adjustable throttle valve 50 which controls the hydraulic system 17, the valve being actuated against a spring 55 by a cam 57 on the spindle. Motor 14 drives spindle 12 through a toothedbelt-drive and planet gear 16. In operation, air is supplied from a valve 38 to the right hand side of a 12, piston 31 so that a sleeve 11, along with spindle is moved to the left, at a fast approach rate, valve 50 being forced upwardly by cam 57 against spring 55 so that fluid passes from an annulus 44 to an annulus between an hydraulic piston 43 and a seal 23, and the hydraulic fluid does not resist the feed of the piston. However, at the end of the fast approach, valve 50 moves downwardly due to a chamfer 65 on the cam and the outlet from channel 41 is partially blocked and the spindle feed rate is reduced. A further similar throttle valve 76 is used for the return travel of the spindle. To compensate for leaks in the closed hydraulic circuit a spring compensator 78 is provided so that the system can be topped-up.
GB5843073A 1973-02-03 1973-12-17 Drilling or screw-thread cutting unit Expired GB1456679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732305420 DE2305420C3 (en) 1973-02-03 1973-02-03 Drilling or threading unit

Publications (1)

Publication Number Publication Date
GB1456679A true GB1456679A (en) 1976-11-24

Family

ID=5870901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5843073A Expired GB1456679A (en) 1973-02-03 1973-12-17 Drilling or screw-thread cutting unit

Country Status (5)

Country Link
CH (1) CH560567A5 (en)
DE (1) DE2305420C3 (en)
FR (1) FR2216051B1 (en)
GB (1) GB1456679A (en)
IT (1) IT1002834B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340243A (en) * 1987-10-30 1994-08-23 Cooper Industries, Inc. Airfeed peck drill configuration
US5374143A (en) * 1987-10-30 1994-12-20 Cooper Industries, Inc. Air feed peck drive configuration
US5533842A (en) * 1992-02-21 1996-07-09 Cooper Industries, Inc. Portable peck feed drilling system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103170686A (en) * 2012-05-21 2013-06-26 温岭市国邦电气有限公司 Automatic tapping machine power head capable of fast feed and fast return

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340243A (en) * 1987-10-30 1994-08-23 Cooper Industries, Inc. Airfeed peck drill configuration
US5348427A (en) * 1987-10-30 1994-09-20 Cooper Industries, Inc. Airfeed peck drill configuration
US5374143A (en) * 1987-10-30 1994-12-20 Cooper Industries, Inc. Air feed peck drive configuration
US5533842A (en) * 1992-02-21 1996-07-09 Cooper Industries, Inc. Portable peck feed drilling system
US5833404A (en) * 1992-02-21 1998-11-10 Cooper Industries, Inc. Portable peck feed drilling system

Also Published As

Publication number Publication date
FR2216051A1 (en) 1974-08-30
IT1002834B (en) 1976-05-20
DE2305420A1 (en) 1974-08-15
DE2305420B2 (en) 1977-09-08
FR2216051B1 (en) 1978-03-24
CH560567A5 (en) 1975-04-15
DE2305420C3 (en) 1978-06-22

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Legal Events

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