SU904898A1 - Metal cutting machine tool feeding mechanim - Google Patents

Description

one

FIELD: machine tool industry.

A metal feed machine feed mechanism is known, comprising a tool support pivotably mounted on an axis, on which a lever is mounted by means of an axis, on the free end of which a roller is interconnected with a crushing cam located on the axis of rotation of the support and kinematically associated with the rotational drive of the product, and Ul drive support drive

The disadvantage of this mechanism is the irregular geometrical shape of the workpiece and the reduced machining accuracy due to reciprocating oscillation of the tool relative to the product.

The aim of the invention is to stop the splitting of chips at the end of cutting in order to increase the machining accuracy in obtaining the correct geometrical shape of the product.

The goal is achieved by the fact that the caliper is equipped with a stop limiting the radial flow of the tool and an additional lever fixed on the axis of the lever carrying the roller, and both levers are interconnected through the axis introduced into the mechanism and the opposing spring.

FIG. 1 schematically shows the proposed feed mechanism for a caliper as applied to a rotary machine; in fig. 2 shows section A-A in FIG. 1J in FIG. 3 shows a section BB in FIG. 2; in fig. k is a section bb of FIG. 2, in FIG. 5 is a section of YYD in FIG. 2

Claims (1)

The feeding mechanism of a cutting machine cutter contains a support 1, a carrying tool 2, an emphasis 3 mounted rotatably on supports and 5 and also provided with a lever 7 fixed on an axis 6 having a roller 8 at the other end and an axis 10 interconnected with the lever 7 with pro390 a torsion spring 11, and its feed drive — a rod 12. On the axis of rotation of the caliper 1, inside it on bearings 13 and 14, there is a crushing cam 15 having elevation and descent sections and receiving rotation from gear wheel 16. Cam 15 is in contact with roller 8 of lever 7. The mechanism of work is as follows. From the feed drive, the rod 12, acting with its roller 17 on the platform 18 of the lever 9, rotates the caliper 1 with the tool 2 on the supports i and 5 in the direction of supply to the product 19. During rotation, the grinding cam 15 influences its lifting section on the roller 8 and informs lever 7 and 9 rocking movement on the platform 18 relative to the support - roller 17 and feed rod 12. At the same time, the support 1 with the tool 2 makes a pivotal movement in the direction of the product - the plunging takes place, and upon further rotation of the cam, when the roller of the lever contacts the section slump kul ovary, caliper under the action of the spring 20 returns to its original put of - a tool output occurs from contact with the workpiece and chips drobits. During the further course of the rod 12 in the cutting path, the support 1 with its support 3 comes to the platform 21 rigidly fixed, for example, on the machine bed (block holder) 22 of the machine, and the tool oscillations, decreasing, stop, while the oscillations of the lever 7 are compensated by the spring 11 the lever 9 chip breaking is stopped, thereby increasing the machining accuracy by obtaining the correct geometric shape of the product. At the end of the treatment, the rod 12 moves away and the caliper with the levers 7 and 9 rotates on the supports 4 and 5 from the spring 20 to the initial position. Due to the insignificant magnitude of the oscillation amplitude of the tool in comparison with the radius of its oscillation., Moving the tool 2 during an oscillatory motion can be considered as a reciprocating movement in the radial direction. The presence of a feed mechanism with kinematic crushing of chips in a metal cutting machine expands the possibilities of using high-performance equipment, particularly during metal-turning, because the chips do not cling to moving and rotating parts of the machine, which increases its reliability and efficiency. In addition, the use in the feed mechanism of the crushing cut-off elements at the end of cutting improves the quality of the processed products. An inventive machine feed mechanism comprising a tool support mounted rotatably on an axis, on which a lever is mounted by means of an axis, on the free end of which a roller is interconnected with a grinding cam located on the axis of rotation of the support and kinematically connected with the product's rotating drive, and a caliper feed drive, characterized in that, in order to increase the machining accuracy of the finishing passes by ensuring that chip breakage is stopped, the caliper it is packed with an emphasis limiting the radial flow of the tool and an additional lever fixed on the axis of the lever carrying the roller, and both levers are interconnected through the axis introduced into the mechanism with the counteracting spring. Sources of information taken into account in the examination 1. USSR certificate of authorship If 715227, cl. 8 23 V 25/02, 1977IL 5-d nO pHljfnO w Fig / HGH rotated P