SU1645083A1 - Chisel for cutting spur gear - Google Patents

Description

one

(21) 4621851/08

(22) 19012.88

(46) 04.30.91. On Number 16

(71) Kiev Polytechnic Institute im050th anniversary of the Great Oct. of Brno socialist revolution

(72) PRRodin and JSC S0 Yablonsky

(53) 621 „914-6 (08808)

(56) USSR Copyright Certificate No. 837640, CL 0 B 23 F 21/24, 1978,

(54) HEAD FOR CUTTING CYLINDRICAL WHEELS

(57) The invention relates to instrumental production and can be applied in the production of gear-forming tools. The purpose of the invention is to increase the reliability of the head.

in operation due to the tightening of the design. The cutting teeth 3, made in the form of gear-cutting combs, are fixed to the movable element ax0. The flanges 5 and 6, mounted on the housing 1, prevent the movable elements from lateral rotation relative to the housing in the plane of its rotation on the pins 7, fixed in the flanges by means of the sleeves 8 o. The movable elements are provided with fingers 9S freely moving in the through-holes of the flanges. The fingers are fitted with rollers 10, which interact with the surfaces of the copiers 11, 12. 18 For these elements, an additional rotation relative to the housing 1 on the trunks 7 ensures the straight-line movement of the cutting teeth 30 2 or 0

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The invention relates to instrumental production and will find application in the manufacture of gear-processing tools.

The purpose of the invention is to increase the reliability of the head due to toughening the design,

Figure 2 shows a proposed head for cutting cylindrical gears; cross-section} in Fig. 2 is section A-A in Fig. 010.

The head includes a housing 1 (Fig. 01), movable elements 2 with cutting teeth 3 fixed on them, made in the form of gear-cutting combs and interacting with a cutting wheel 4. Moreover, the profiles of cutting teeth 3 located on adjacent moving elements 2 are shifted relative to one another. but another by the value of P0 / p, where P0 is the axial pitch of the cutting teeth 3; n - the number of moving elements 20 To case 1 rigidly attached right 5 (Fig2) and left 6 flanges, fused. moving mobile elements 2 from lateral rotation relative to the body

In the plane of its rotation on the trunnions 7, the axes of which are fixed in the flanges 5 and 6 by means of the bearing bushings 8, the trunnions are located in the flanges 5 and 6 with uniform angular pitch. The movable elements 2 are also provided with fingers 9, which freely move in the through-holes of the flanges 5 and 6 when the movable elements turn 2 o. The fingers 9 are equipped with rollers 10 interacting with the right

II and the left 12 copiers, which are mounted on a stationary central shaft 13 and secured against rotation with the help of dowels 14 and 15 Вал. The shaft 13 is mounted on tapered roller bearings 16 and 17 in the central bores of the flanges 5 and 6. The core contour protects the movable elements 2 from rotation under the action of inertial forces when the body 1 rotates. The profiles of the copiers 11, 12, and 18 are made in the form that ensures the straight movement of the cutting teeth 3 on the working areas with uniform body rotation 10 A sleeve 19 is fitted on the left end of the shaft 13,

rigidly connected to the cam 18 and fixedly mounted on the machine bed0. The right flange 5 is rigidly connected to the mandrel 20, transmitting the rotation of the housing 1 from the machine spindle. 0 A roller bearing 21 is installed in the central bore of the mandrel 20, the inner ring of which sits on the shaft 130 using an adjusting nut 22, fixed with a nut 230

Copier 12 with copier 18 form a slotted copier surface, essentially being one copy.

The head works as follows.

The rotation of the machine spindle, coordinated with the rotation of the cutting wheel 4, is transmitted through the mandrel 20 to the flange 5, the housing 1 and the flange 60 of the trunnion 7 transmit the rotational movements of the housing 1 by the movable element 20. - to the fixed surfaces of the fixed copiers 11, 12 and 18, which in the working areas inform the moving elements 2 an additional rotation relative to the housing 1 on the trunnions 7, which ensures a straight movement of the cutting teeth of the teeth 3 This movement is the total movement Coming out of the rotation of the moving elements 2 together with the housing 1 and their additional rotation around the axes fixed relative to the housing 1 "

Claims (1)

Invention Formula A head for cutting cylindrical wheels, in which the cutting teeth are placed on movable elements associated with the body, mounted for rotation in the plane of rotation of the head and carrying rollers, interacting with two copiers opposed to the cutting teeth, improving the reliability of the head operation, the connection of the moving elements with the body is realized by means of a pin, the axis of which is fixed relative to the body and one of the copiers is made with a slot-like copy erhnostyu ,, four fa.f “A