SU837635A1 - Gear shaper - Google Patents

Description

(54) TOOTH MACHINE

The drawing shows a machine diagram. The drive of the circular feed of the machine is made in the form of a kinematic chain containing a kinematic pair 1 located on the drive shaft 2 of the machine, a kinematic pair 3, after KOTOpcrfl the drive chain is branched. The first branch includes a kinematic pair 4, a crank-beam mechanism 5, a mechanism b of discrete action, a kinematic pair 7, a tuning body 8, an input 9 of the summing mechanism 10.

The second branch includes an uncontrollable circuit 11, an input 12 of the summing mechanism 10. An output 13 of the summing mechanism 10 is kinematically connected with a kinematic link 14 located in the run-in chain linking the healing table 15 to the ram 16 of the shaft 17. The slave link 18 of the crank-rocker mechanism 5 at the same time is the driving link of the discrete action mechanism b, made in the form of a ring (link 18) with grooves 19 on the inner side, having bevels 20 on one side, covering the disk 21, bearing fingers 23 in the grooves 22, resting on the spring us 24. Notches 19 on the ring more than the number of slots 22 on the disk 21. The difference in angular steps of positioning slots 19 and 22 determines the angle of the rolling unit 18, the message defining the period of motion from the drive shaft 2 in the running-through member 14. The chain.

In order to ensure synchronous operation of the crank-slider mechanism 25, the drive of the sleeve 26, the splint 16, the slot 18 and the mechanism 6 of discrete action, the gear ratio of the drive section from the kinematic pair 1 to the kinematic 4 is equal to one.

The drive ratio of the drive branch — kinematic pairs 1 and 3, circuit 11, input 12 of the summing mechanism 10 — is set so that the charging is continuously connected to the rolling, the value of which does not exceed the minimum clearance between the teeth of the bit and the workpiece during the return stroke of the bit. k in motion P |.

The tuning device 8, the guitar of the interchangeable gear KOJjec (circular feed box), is used to adjust the speed of the working circular dog feeds, i.e. the movement of the run-in fed into the chain only during the hammering periods - the stroke of the chuck 17.

The drive works as follows When turning on the electric motor 2, the machine begins to rotate with the working

circular frequency drive shaft 2, each turn of which through the crank mechanism 25 is converted into one double stroke of the socket 17 (movement P). At the same time, from the prism of the water shaft 2, the kinematic chain — kinematic pairs 1 and 3, chain 11, input 12 of summing mechanism 10, output 13 of this mechanism — is transmitted through link 14 to

chain of rolling / linking dividing table 15 and ram 16 of the hollow 17. As a result, the rolling movement, reproduced by the coordinated Rotation B of the hammer 17 and rotating B of the table 15, is carried out with a minimum speed ensuring constant tension of the chain of rolling and reverse movement without interference of its teeth and the teeth of the wheel being cut.

During the direct working stroke

0 17 (movement П) movement with a working circular feed along the kinematic chain - kinematic pa1Zh1 1 and 4; crank-and-shaft mechanism 5; mechanism 6

five . discrete action, kinematic. pair 7, body 8 settings input 9 of the summing mechanism 10, output 13 of this mechanism, kinematic link 14 - and then through body 28 on ... of the construction - to the separation table 15, and through the kinematic pair 29 and the worm gear 30 - to ram 16 chuck 17.

When the dolb is returning to the chaining chain, the movement with the working circular feed will not be supplied.

Claims (1)

Invention Formula A gear shaping machine in which the circular feed drive is made in the form of a kinematic chain with a circular feed setting body connecting the drive shaft of the machine with a rolling chain, characterized in that, in order to increase technological reliability, the machine is equipped with a crank mechanism connected to the drive gear. to the shaft, the MOM of a discrete action, established between the curved stick mechanism and the body for setting circular feeds, and the summing mechanism, one of the inputs of which is connected to the body of the setting, the second with water shaft and output - with a chain of rolling. Sources of information taken into account during the examination 1. Fedotenok A.A. Kinematic structures of machine tools, M., Mashinostroenie, 1970, pp. 160-171.