SU986647A2 - Machine for working tool - Google Patents

Description

(54) SHAFT MACHINE

one .

The invention relates to a machine tool industry and can be used for machining round and flat shafts by turning, milling and grinding.

A known machine for machining shafts with a turning method, comprising a frame with a spindle head with a workpiece, a caliper with a holder, in which a tool spindle with a cutting head 11.J is mounted eccentrically with the possibility of adjustment.

The disadvantage of the known machine is the lack of versatility, due to the possibility of machining parts only by turning.

The purpose of the invention is the distribution of technological capabilities of the flock.

To achieve this goal, the CNC machine is equipped with an additional adjustable drive and a kinematic chain switching mechanism.

The drawing shows the kinematic schematic of the machine.

Spindle 1, carried} G1ci billet 2, connected; through gear 3 with adjustable drive 4. Parallel to spindle 1 in cage 5 rotator 6 with HHCTpjnvieHTOM 7 is rotatably mounted. Casing 5 is equipped with a device 8 for adjusting the distance between the spindle 1 and cage 5 axes when setting the machine.

The spindle 1 is connected to the holder 5 by a kinematic dividing chain containing a tuning organ (a guitar of interchangeable gears) 9 and permanent gears 10-12.

The tool plate through the telescopic swivel 13, the movable wheel 14, and the gear 15 is connected with the spindle 1 and further along the chain of division with the holder 5.

Claims (2)

Through the movement mechanism (not shown in the diagram), the wheel 14 can be brought into engagement with the wheel 16 mounted on the output shaft of the additional.,: Adjustable drive 17. Thus, the tool spindle b can be connected with its switching mechanism by means of a switching mechanism a drive 17, or with a spindle 1 and a yoke 5. An adjustable drive 18 with a screw pair 19 serves to communicate the longitudinal feed tool, and a vii pair 20 to set a predetermined distance between the rotation of the yoke 5 and the spindle 1. In The quality of the tool 7 on the spindle 6, when machining polyhedral shafts, can be equipped with a cutting head with a number of cutting elements equal to the number of machined faces (when machining using the interrupted machine), a multi-blade disk tool (for milling) and a grinding wheel. When non-circular shafts are machined by discontinuous turning, the tool spindle 6 is connected kinematically with the tool 1 and the holder 5 by means of a switch mechanism, and with the additional drive 17 when machining by milling and grinding. In all cases, the kinematic chain between the spindle 1 and the holder 5 is adjusted so that the angular velocity of the holder 5 would be: la equal to the product of the angular velocity of the workpiece and the number of faces to be machined. When machining multifaceted shafts with intermittent turning, the gear ratio of the kinematic chain between spindles 1 and 6 is adjusted depending on the number of cutting elements at the cutting head and the number of machined faces. For example, if these quantities are equal, the gear ratio of the kinematic chain between spindles should be one} 1e. The directions of rotation of spindle 1 and both of 5 are the same for all implemented machining methods. When machining by turning, the rotation of the tool coincides with the direction of rotation of the spindle 1 and the yoke 5. With other processing methods, the rotation of the tool may coincide with the rotation of the workpiece (counter cutting pattern) or be opposite (passing diagram). Machine when processing non-circular shafts works as follows. When machining by the method of intermittent turning from the drive 4, the spindle 1. Gets rotation with the workpiece 2. Simultaneously, along the kinematic chain containing gears 15 and 14, the spindle 6 with tool 7 receives rotation, and the kinematic chain with gears 9-12 receives the holder 5. In this case, the actuator 17 is disabled. The noncircular cross section is profiled by the apexes of the cutting elements as a result of the combined rotational movements of the sleeve 5, the workpiece 2 and the tool 7. To form the product along the tool 7, from the drive 18 through the screw pair 19, a linear feed movement along the axis of the spindle I is reported. When machining by milling or grinding, the spindle 6 s tool volume 7 receives independent rotation with cutting speed (main movement) from the drive 17 through gears 16-14 and telescopic swivel joint 13. At the same time, from the drive 4, the sleeve 5 and the spindle 1 with the workpiece 2 receive the same directional rotational movements with a ratio of angular velocities equal to the number of faces to be machined. The rotation of the workpiece in this case is a circular feed movement. The rounding of the shaft is carried out in this case with a circle whose diameter is equal to the diameter of the tool, as a result of coordinated rotational movements of the spindle .1 and the holder 5. The machine can also process the round shafts in two schemes. When the first one is disconnected, the kinematic chain between Shchepleskoy 1 and the yoke 5 and the machining is performed by a tool (cutter, grinding wheel) receiving rotation from the drive 17 and longitudinal movement from the drive 18. In the second scheme, the workpiece is coupled with rotation, and the stationary cutting head - longitudinal movement. The machine in comparison with the known is more universal and has wider technological capabilities. The invention The machine for processing shafts according to ed. St. N 733878, characterized in that, in order to expand technological capabilities, it is equipped with an additional adjustable drive and switching mechanism of the csematic circuit. Sources of information taken into account during the examination 1. USSR author's certificate No. 733878, cl. B 23 C 3/02, 1977. / to) t- 9 i I