GB332786A - Improvements in and relating to change speed gears for drilling and tapping machines - Google Patents

Improvements in and relating to change speed gears for drilling and tapping machines

Info

Publication number
GB332786A
GB332786A GB2574229A GB2574229A GB332786A GB 332786 A GB332786 A GB 332786A GB 2574229 A GB2574229 A GB 2574229A GB 2574229 A GB2574229 A GB 2574229A GB 332786 A GB332786 A GB 332786A
Authority
GB
United Kingdom
Prior art keywords
clutch
gears
shaft
gear
teeth
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
GB2574229A
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.)
Cincinnati Bickford Tool Co
Original Assignee
Cincinnati Bickford Tool Co
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
Priority to US19178A priority Critical patent/US1763158A/en
Application filed by Cincinnati Bickford Tool Co filed Critical Cincinnati Bickford Tool Co
Priority to GB2574229A priority patent/GB332786A/en
Publication of GB332786A publication Critical patent/GB332786A/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
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • B23B39/12—Radial drilling machines

Landscapes

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

Abstract

332,786. Heide, H. C., (Cincinnati Bickford Tool Co.). Aug. 23, 1929. Drilling-machines.-In a radial-arm drilling and tapping machine the change speed gears for driving the spindle are all located in the drillhead and are arranged on four parallel axes to give a range of thirty-six speeds in steps of three, three and four. A constant speed shaft P mounted on the radial-arm drives a first shaft 1 in one direction or the other through one of a pair of oppositely rotating bevel gears 6. A second shalt 2 is rotated from the shaft 1 through the gear pairs a, c, b, d, or the. clutch b, e and the constantly meshed gears f, g, the gear unit a, b being slidably keyed to the shaft 1 and the clutch gear e, f being freely rotatable thereon whilst all the gears on the shaft 2 are secured thereto. A third shaft 3 has slidably keyed thereon a gear unit 17 and rotatably mounted thereon a gear l having clutch teeth l<1> engageable with clutch teeth j<1> on the unit 17, the drive being transmitted from one of the gears h, c or k on the shaft 2 to one of the gears i, j or l on the shaft 3. A fourth shat 4, coaxial with the shaft 3, has secured thereto a gear q and slidably keyed thereto a gear p which has combined therewith clutch teeth x engageable with teeth w on a gear m slidably keyed to the shaft 3. The drill spindle S is splined within a sleeve 5 on which gears r, n are rotatably mounted, the former having clutch teeth s and the latter extended teeth o which may be engaged alternatively with a clutch element 22, having teeth t and v, slidably keyed on the sleeve 5. The drill spindle may be rotated from the shaft 3 through, (1) the clutch w, x, gears q, r, and clutch s, t, or (2) the gears m,n and clutch v, o, or (3) the gears m, n, gears 0 - - and clutch s, t, or (4) clutch w, x, gears p, o and clutch v, o. Spindles.-The clutch element 22 is splined to the sleeve 5 by means of four keys 28 on the sleeve and corresponding grooves 29, Fig. 2, in the clutch while the sleeve is provided with four keys 30 engaging keyways 31 in the spindle and located at the base of the spindle and within the lower bearing 25 so as to relieve the spindle from torsion as much as possible.
GB2574229A 1925-03-28 1929-08-23 Improvements in and relating to change speed gears for drilling and tapping machines Expired GB332786A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US19178A US1763158A (en) 1925-03-28 1925-03-28 Thirty-six-speed head
GB2574229A GB332786A (en) 1929-08-23 1929-08-23 Improvements in and relating to change speed gears for drilling and tapping machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2574229A GB332786A (en) 1929-08-23 1929-08-23 Improvements in and relating to change speed gears for drilling and tapping machines

Publications (1)

Publication Number Publication Date
GB332786A true GB332786A (en) 1930-07-31

Family

ID=10232538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2574229A Expired GB332786A (en) 1925-03-28 1929-08-23 Improvements in and relating to change speed gears for drilling and tapping machines

Country Status (1)

Country Link
GB (1) GB332786A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107245A1 (en) * 2007-03-02 2008-09-12 Robert Bosch Gmbh Gearbox device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107245A1 (en) * 2007-03-02 2008-09-12 Robert Bosch Gmbh Gearbox device

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