SU738791A1 - Machine for milling one-side bevels at the end faces of gear teeth - Google Patents

Description

(54) MACHINE FOR MILLING UNILATERAL SLOTS ON THE END OF A GEAR TEETH The invention relates to a machine tool industry. A known machine for milling one-sided bevels on topuax gear teeth l on a bed of which is mounted a storage device in contact with a spindle assembly carrying the machined wheel and a support with a milling head mounted on it at an angle to the machined wheel and with the possibility of movement and rotation from the kinematic chain connected by a reducer with the general drive of the machine. The rounding of the ends is carried out with a fungal cutter, which performs rotational and reciprocating movement from the drive. The cutting process is intermittent, so processing is carried out by a single division method. The machine has a low productivity due to the fact that for each tooth of the gear being machined, the caliper of the machine is made by working and idling strokes. In addition, the use of a fungus cutter with an HTmeHabtM ogre, with an outer diameter and, therefore, with a limited number of cutting teeth, adversely affects its durability, which also reduces the productivity of the machine. The aim of the invention is to increase machine productivity and the possibility of milling bevels with a single-turn worm cutter. This chain is achieved by introducing into the machine a kinematically connected three-position auto-operator and an additional kinematic chain working from the common drive of the machine, connecting the spindle assembly of the machined wheel with the milling head and including a camshaft with two cams, one of which is the lever is connected with the movement of the milling bogus, and the other by means of the pneumatic system is connected with the auto-operator, and the gearbox is reversible.

Date: 05/07/2001

Number of pages: 4

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ABOUT A C AND N E E INVENTIONS

TO AUTHOR'S CERTIFICATE

(6) Additional to auth. svid-ou -. (22) 3a November 11, 1997 (21) 2541520 / 25-08 with the accession of application number (23) Priority Published 05.06.8О. Bulletin No. 21 Date of publication on 06.06.80 (72) Authors V.V. Safarov, V.G. invention

(71) Applicant (54) SEMI-AUTOMATIC FOR PROCESSING The invention relates to a machine tool industry. A semi-automatic adaptation of the machining of teeth of end mills fixed in pinopn is known, in which the cutter clamping mechanism is a pneumatic cylinder with an abutment on it, two clamping sponges and two spring-loaded lugs 1. The disadvantage of the known adaptation is the lack of rigidity of the AIDS system, which weakens technological possibilities of the device, not allowing to use its dp of processing billets with diameters from 2 to 45 mm. The purpose of the invention is to improve the reliability of the clamping of the cutter at the time of processing. This chain is achieved by the fact that the fixing mechanism of the machined cutter relative to the abutment mounted in its body is inserted into the device. the form of a power pneumatic cylinder, kinematically connected with the pinhole through a leverage system, the last of

738792

(Ii)

.

Fondeco Erto

(51) M. CL;

23 F 23/00

(53) UDKb21.914.

.5.002.54 (088.8) and V. KONTSEV Shabanov, N. N. Nichipuruk A. GUSOV COOL ADAPTATION OF MALE TEETH MILLERS fixed on the axis with the possibility of reversal. FIG. 1 shows a semi-automatic adaptation of the machining of end teeth of end mills, a section; on fng, 2 - view A of FIG. 1. The semi-automatic device has a housing 1 with a locking mechanism built into it, consisting of pneumatic: cylinder 2, gear gear 3, friction clutch 4, gear rack 5, clamping nut 6 with spring 7. The quill 8 ends with a fungus and installs a milling cutter 9. The quill is installed in the spindle Yu and is constantly under the action of the spring 11, which is located in the internal bore of the spindle Yu with a friction washer. The spindle is installed on two radially resistant ball bearings 12. The removal of quill 8 when installing the cutters 9 is carried out by the lever 13 through the pusher 14 and the handle 15. In the right bore of the housing 1 there is a bracket 16 for setting the milling cutters 9, which has a clamp mechanism consisting of a clamping cylinder 17, clamping sponges 18 (fixed) and 19, stops 20 and Two spring-loaded strips 21. The bracket 16 is adjusted in height depending on the length of the mills 9 with the help of the gear wheel 22, which is in engagement with the rail 23. In the left bore of the housing 1 a power pneumatic piston is installed pindr, the piston 24 and the rod 25 through the bracket 26 which the lever 27 biases the quill S installed therein cutter 9 to the abutment 2b during processing. The device works as follows. The device is installed on the table of the horizontal milling machine and the work cycle occurs when the table is moving longitudinally. The handle 15 through the lever 13 and the plunger 14 retracts the quill 8, while the milling cutter 9 is installed in the quill fungus. The spring 11 presses the upper end of the milling cutter 9 against the stop 2 O. Thus, the difference in the length of the milling cutter 9 does not affect the milling depth of the end teeth. After setting the milling cutter 9, the machine starts up. The milling cutter 9 is rotated by a tooth under the spring-loaded bar 21. When moving forward, the piston of the pneumogun 2 through the toothed rack 5 and gear 3 transmits the rotation of the spindle 10 quill 8 and the milling cutter 9 installed in it, which turns a little more than the pitch of the teeth, deflects the bar 21 The shear 3 is pressed against the spindle 1O by a clamping nut 6 with a spring 7. When the rack 5 moves backward, the tooth of the milling cutter 9 rests on the bar 21, the spindle 10 with further slipping of the friction clutch 4. The miter will clamp the milling cutter 9 along the cylindrical parts of the pneumatic cylinder 17. the sponge of the milling cutter 9 moves in the direction of the pneumatic cylinder 17. At the same time, the milling of the milling cutter 9 takes place through the quill 8 with the pneumatic power cylinder, the piston 24 of which with shtxism 25 acts on the bracket 26

V367 & 5 through the lever 27 and interacts with the stop W 20. The working feed begins and the front or rear face of the tooth is milled. At the end of the milling process, when the table moves backward, the cutter 9 expands along the cylindrical part and the power pneumatic cylinder returns. At this point, the piston 24 of the power piston clamping cylinder rises. The end face of the milling cutter 9 is pressed against the stop 20 at the moment of dividing only by the spring 11, which facilitates the turning of the milling cutter 9 when dividing. After the division, the next working stroke is carried out, during which another miter tooth is milled. The process is repeated until all the end teeth are milled. It should be noted that the use of a rigid spring 11 is unacceptable, since the removal of quill 8 when installing workpieces was carried out. The use of a stiff spring causes additional effort when dividing the workpiece and can lead to disruption of the friction clutches. Formula of the Invention A semi-automatic device for machining end teeth of end mills fixed in quillies, which means the clamping mechanism of the milling cutter is a pneumatic cylinder with an overhanging support, two clamping jaws and a spring-loaded slider, about 20 and 0 It is due to the fact that, from the increased reliability of the mill clamping at the moment of machining, the fixture of the machining cutter installed in the housing of the housing has been inserted into the device, made in the form of a power pneumatic cylinder, kinematically connected with a pinhole through a system of levers, the last of which is fixed on the axis with the possibility of reversal. 0Sources of information taken into account during the examination 1. Borovsky V. G. and others. High-performance device, Mashinostroenie, 1975, N 11, p. 31.

Claims (1)

Semi-automatic fixture for machining the end teeth of end mills fixed in pins, in which the milling clamping mechanism is a pneumatic cylinder with a pore located on it, two clamping jaws and two spring-loaded trims, as follows that, in order to increase the reliability of the cutter clamp at the time of processing, the device has a mechanism for fixing the machined cutter relative to the stop installed in its body, made in the form of a power pneumatic cylinder kinematically connected with the support via m a system of levers, the last of which is mounted on the axle to pivot. Sources of information taken into account during the examination