SU921723A1 - Machine for cutting teeth of large-modulus external gear wheels - Google Patents

Description

one

The invention relates to gear processing.

A machine for cutting teeth of coarse-grained external gearing wheels is known, on the bed of which there is a column carrying a dividing mechanism, a table with the wheel to be machined, and tool heads in which the tools are installed with the possibility of reciprocating movement parallel to the axis of the wheel 13.

However, in the known device, the radial reciprocating movement of the tool heads is skhstet, which reduces the processing performance.

The purpose of the invention is to increase the performance.

This goal is achieved by the fact that the machine is equipped with sectors located on the frame symmetrically around the table and carrying tool heads that are installed on sectors with the possibility of radial reciprocating movement, the mechanisms of reciprocating movements of the tools of the heads and the separating mechanism are kinematically connected with each other.

The drawing shows the proposed machine, a general view.

Claims (3)

The proposed machine contains a frame 1 with a column 2. Table 3 is mounted on a column 3 that can be rotated and provided with a device 4 for fastening the wheel to be machined 5. On frame 1, sectors 6 are placed symmetrically and radially around the table 2. The number of sectors may be three or four. Sectors 6 are equipped with movable columns 7 with a synchronous movement mechanism relative to the sectors. On the columns 7, hydrocylpvdry 8 with rods 9 are fastened. On the rods 9 there are fasteners of the cage 10 with modular incisors 11. The number of modular incisors in one cage can be from four to twelve. 9: An electric motor 12 is located inside one of the sectors 6, the shaft of which is connected through the coupling 13 to the reversing mechanism 14. The output shaft of the mechanism 14 through the coupling 15 is connected to the gear 16, which is engaged with the gear 17, which are divider mechanism rigidly connected to the table 3. Gears 17 and 16, clutch 15, mechanism 14 and electric motor 12 form; turning device to be machined: wheels 5.: In sectors 6, the grooves 18 are formed. Columns 7 have leads 19 with a threaded hole. The drivers 19 of the columns 7 are located in the guide grooves 18. The mechanism for the synchronous movement of the columns 7 relative to sectors 6 consists of screws 20 located in sectors 6 and passed through the threaded holes of the drivers 19. Screws 20 end in conical gear 21 located in meshing with a conical gear 22, kinematically connected through the gearbox 23, the clutch 24, the reverse mechanism 14 with the electric motor 12. The output shaft of the gearbox 23 has an intermittent rotation. The machine has a hydraulic system 25 with a hydraulic cylinder 8 and a distribution ash 26, which simultaneously moves the rods of the hydraulic cylinders 8. To accommodate the movement of hydraulic cylinders with the movement of the columns, the spool 26 is kinematically connected with the mechanism of synchronous movement of the columns. The distribution valve 26 is mounted on the shaft between gear 22 and the gearbox 23. To fix the table 3, the machine has a locking device 27. The proposed machine operates as follows. The required flow of the columns 7 is established by means of a gearbox 23 after switching on the electric motor 12 and the clutch 24. Gear 22, which rotates gears 21, and therefore screws 20, begins to rotate. Screws 2O, screwed into the drivers 19, will simultaneously move all columns 7 to the wheel 5 being machined mounted on table 3. 34 Mounted on the output shaft of gearbox 23 the distribution valve 26 of the hydraulic system 25 provides for the reciprocating movement of the rods of the hydraulic cylinders 8. At the same time, the distribution valve 26 is coordinated with intermittent rotation of the output shaft of the gearbox 23 so that the columns 7 are fed when the modular cutters 11 mounted on the rods 9 of the hydraulic cylinders 8 are above the wheel being machined move upwards. When cutting is done, the feed of the columns 7 is stopped. On the proposed machine, several teeth are simultaneously aimed at several,., Areas that are symmetrically removed from the new axle of the wheel to be machined. After cutting the teeth in some areas, the reversing mechanism 7 is retracted by the reverse mechanism 14. Turning on the sleeves 15 and 24, the table 3 is rotated to the desired angle. Then all the columns 7 are synchronously fed to the wheel 5 being machined with simultaneous reciprocating movement of the rods 9 with modular cutters 11. Invention The machine for cutting teeth of coarse-grained external gear wheels, on the frame of which the column carrying the dividing mechanism is placed, a table with the wheel to be processed , and tool heads, in which the tools are installed with the possibility of reciprocating movement parallel to the axis of the wheel, characterized in that, in order to increase the water supply, the machine is equipped with sectors located on a bed symmetrically around the table and carrying tool heads that are installed on sectors with the possibility of radial reciprocating movement, with the mechanisms of reciprocating movements of the tools of the heads and the separating mechanism are kinematically connected to each other. Sources of information taken into account during the examination 1. USSR author's certificate M 177754, cl. In 23 F C / PA, 1964.