SU1230750A1 - Apparatus for automatic retracting of tool - Google Patents

Description

The device works as follows.

The invention relates to a machine tool industry and can be used when cutting threads on lathes.

The aim of the invention is to improve the machining accuracy by increasing the rigidity of the device.

FIG. 1 shows the device, a general view in plan; FIG. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 shows a section B-B in FIG. 2; in fig. 5 is a section of YYD in FIG. 2

The device comprises a housing 1 with a guide groove 2 mounted in the tool holder 3.

The holder 4 is movably mounted with a holder 4 with a push-off protrusion 5 for accommodating the tool 6 and a rectangular opening 7 is made in which the retraction mechanism which is cooperatively mounted with the holder 4 and interacts with the holder 4. The mechanism for retracting the holder 4 consists of a rod 8, on which a keyway groove 9, a groove 10 and a sample 11, a compression spring 12, and an adjusting screw 13 with a lock nut 14 are made. On the side plane of the housing 1, a locking mechanism is made of a figured lever 15 with a latch 16, cooperating with a sample 11 of a mechanism for retracting the holder, and a clip 17 for an abutment of a compression spring 12.

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Before starting work, the device body 1 is clamped in the tool holder 3 of the lathe support. In the initial position, the shank protrusion 5 of the holder 4 rests against the groove 10 of the rod 8 of the mechanism for retraction of the holder, providing a rigid directional position of the holder 4 with the tool

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0 5

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6. The spring 12 of the compression is in a free state on the rod 8. The figured lever 15 of the locking mechanism is loosened and held by the pin-limiter

18 and a spring 19 of compression from contact with the rod 8 of the mechanism for retracting the holder 4. The stop 20, located on the bed of the lathe, is set to the desired length L of the cut thread, and then with an adjusting screw 13 produces an exact adjustment of the length L of the cut thread, then the adjusting screw 13 the counter in the body of the rod 8 lock nut 14.

The device is ready for operation.

When turning on the lathe, the device together with the machine caliper moves until the adjusting screw 13 comes into contact with the stop 20. After their contact, the rod 8 moves in the rectangular opening 7 of the housing 1 until the full clamp of the tongue 5 of the holder 4 enters the keyway 9 of the rod 8 Thereby, the tool 6 of the holder 4 is automatically retracted from the threaded part.

At the same time, the retainer 16 of the figured lever 15 of the locking mechanism enters the sample 11 of the rod 8, locks in it and fixes the holder 4 in the position of retraction from the part. Springs 12 and 19 are compressed. The machine caliper then returns to its original position. The latch 16 exits the sample 11 of the rod 8, releasing the spring 12 of compression, which returns the rod 8 to its original position, in which the tongue protrusion 5 of the holder 4 exits the shaft groove 9 of the rod 8, moving the holder 4 with the tool 6 to the initial position. Simultaneously spring

19 shrink returns figure lever 15 locking mechanism to its original position.

The cycle is repeated.

Vida

FIG. 2

WCP

FIG. five

17

(pif.

Editor L. Povhan Order 2307/14

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Compiled by V. Semenov

Tehred I. Veres Corrector L. Patay

Circulation 1001 Subscription

Claims (1)

DEVICE FOR AUTOMATIC TAPE OF THE TOOL, in the case of which a tool holder with mechanisms for its removal and fixing is installed with the possibility of movement in the guide groove, characterized in that, in order to increase the rigidity of the device, a rectangular hole is made in the housing perpendicular to the side walls of the guide groove, and a protrusion is made on the holder at an angle to the guide groove, and the holder retraction mechanism is made in the form of a rod installed with the possibility of movement in the specified hole, on which made a keyway, designed to interact with the protrusion, and the groove, while the keyway is made at an angle to the guide groove, and the groove is parallel to it. go