GB152654A - Improvements in gear slotting machines - Google Patents

Improvements in gear slotting machines

Info

Publication number
GB152654A
GB152654A GB29430/20A GB2943020A GB152654A GB 152654 A GB152654 A GB 152654A GB 29430/20 A GB29430/20 A GB 29430/20A GB 2943020 A GB2943020 A GB 2943020A GB 152654 A GB152654 A GB 152654A
Authority
GB
United Kingdom
Prior art keywords
lever
teeth
tools
shaft
pinion
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
GB29430/20A
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
Priority claimed from DE152654X external-priority
Application filed by Individual filed Critical Individual
Publication of GB152654A publication Critical patent/GB152654A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23FMAKING GEARS OR TOOTHED RACKS
    • B23F1/00Making gear teeth by tools of which the profile matches the profile of the required surface
    • B23F1/04Making gear teeth by tools of which the profile matches the profile of the required surface by planing or slotting

Abstract

152,654. Schaerer, O. Oct. 18, 1919, [Convention date]. Gear-cutting; tools.-A form-tool gear-shaping machine has two vertically reciprocating diametrically-opposed tool rams for cutting, two or more teeth by simultaneous or alternate working strokes, the tools being radially fed at each working stroke. An adjustable crank 32 driven through change gearing from the driving shaft 27 reciprocates a rack 33 which through a pinion 35 oscillates a shaft 34 whose movement is transmitted through pinions 40, 41, racks 36. 37, and pinions 42. 43 to the shafts 38, 39. In Fig. 1 the cutters are shown as working alternately, while the racks 36, 37 are shown as arranged for operating the cutters simultaneously. Pinions 44, 45 feathered on the shafts 38, 39 respectively engage racks fixed to the tool rams 8, 9 to reciprocate the tools. The rams are carried on slides 6, 7 connected by threaded' spindles 15, 16 to racks 13, 14 sliding in a recess of a yoke portion 2 of the frame and actuated by a pinion 12 on a spindle carrying a second pinion 17 engaging a rack 19. A cam 20 on a shaft 21<a> is rotated to actuate the rack 19 and feed the tools radially bv means of a ratchet wheel 21 intermittently operated by a lever 22, pawl 23, and oscillating lever 24 on the shaft 34. A fixed pawl 23<a> prevents backward movement of the ratchet wheel. The rack 19 is returned to the lowest position on completion of two teeth by means of a weighted lever 18. During this operation a sleeve 25 surrounding the shaft 21<a> is rotated by means of a link 26, and a projection on the sleeve lifts a lever 55 and disengages the stop lever 51 from a dividing wheel 47. The lever 55 is afterwards disengaged from the sleeve by an adjustable screw 25<b>. A link 52, Fig. 8, connects the stop lever to a jaw coupling portion 53 which is thus moved into engagement with a continuously rotating member 46. This motion is transmitted through spur and worm gearing to a table 3 carrying the blank 4. A hardened die 5 is placed beneath the blank to avoid chipping the lower edges of the teeth. A safety lever 54 attached to the stop lever raises the pawl 23 while the dividing mechanism is in operation so that the feed motion and dividing motion cannot take place simultaneously. During the next cutting operation, the upward movement of the lever 18 rotates the sleeve 25 and its projection again engages the lever 55. To obtain better ratios for the wheels operating the dividing mechanism the gear shaft 48 carries a pinion 56 engaging a pinion 57 fixed to a cam 58. The lever 51 carries a finger 59 which slides on the cam and keeps the lever 51 in its raised position through a number of revolutions of the dividinn wheel according to the ratio of the gearing 56, 57. When gears with an odd number of teeth are cut, the tools 10<b>, 11<b> are shaped as shown in Fig. 6. For cutting small teeth, the tools may cut a number of teeth at one operation, the dividing mechanism being made to turn the blank by an amount corresponding to the number of teeth cut.
GB29430/20A 1919-10-18 1920-10-18 Improvements in gear slotting machines Expired GB152654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE152654X 1919-10-18

Publications (1)

Publication Number Publication Date
GB152654A true GB152654A (en) 1922-01-18

Family

ID=5675189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29430/20A Expired GB152654A (en) 1919-10-18 1920-10-18 Improvements in gear slotting machines

Country Status (2)

Country Link
FR (1) FR524419A (en)
GB (1) GB152654A (en)

Also Published As

Publication number Publication date
FR524419A (en) 1921-09-03

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