SU418259A1 - - Google Patents

Description

one

The invention relates to machine tools for the manufacture of springs and may find wide application in various fields of mechanical engineering and instrument-making.

A known machine for winding springs contains mounted and a frame, kinematically interconnected and having a common drive of a direct driving screw, a lever mechanism for longitudinal wire feed with an adjustable clamp and an alternation mechanism for the working and supporting coils of the spring.

The disadvantage of this machine is the difficulty of setting up the mechanism for alternating the working and supporting coils of the spring, which consist in replacing the cam of the program mechanism with the new number of working coils and in the presence of friction gear.

The purpose of the invention is to improve; 1e the productivity and reliability of the machine.

In the proposed machine, the mechanism for alternating the working and onboard internal axles of the spring is made in the form of a set on the driving screw of the start-up clutch, connected in auxiliary auxiliary lever with a regulator provided in the drive, as well as a gear wheel coaxially installed with the regulator and spring-loaded to its end surface. mechanism. A lock is inserted into the body of the regulator, which enters the cavity, which is made on the end surface of the wheel in contact with the regulator.

On fng. 1 shows the described machine, a general view; in fig. 2 is a view along arrow A in FIG. one; in fig. 3 is a view along arrow B in FIG. one.

The machine contains a frame 1, inside of which are placed the electric motor 2, the gear 3,

clutch 4, spindle screw 5 with nut b, double-arm lever 7, one shoulder of which is connected to the base of the frame, and on the other - the holder 8 of the wire to be wound. The lever is put on the sleeve 9 of the change niaga, made integral with the roller pin mounted in the groove of the nut 6.

Counter switch 10 consists of a housing 11, a lid 12, a pinion wheel 13, a spring 14, a ratchet 15, a ratchet latch 16, a cam 17, a latch 18 and a lever 19. The operation of the machine. When turned on, the electric motor is driven through a gearbox spindle and lead screw. Nut 6, moving cdzol pint 5, using a roller

the finger in the sleeve 9 rotates the lever 7 around an axis located on the base of the frame, and the wire is wound on the mandrel. The pitch of the spring is determined by the position of the sleeve relative to the axis of rotation.

leverage. The alternation of workers and boot Vit3

The switch is provided by switching the movement to the lead screw through the clutch by means of a switch-counter using the lever 19 in accordance with a predetermined number of working turns. In the non-working state, the gear wheel 13 under the action of the spring 14 ends up against the body, and the ball pressed into the body is buried in the hole at the end of the wheel. In this case, the ratchet is released from the latch and engages with the wheel, lever 19, abutting one fist against the cam at the end of the gear wheel, separates the movement transfer coupling to the drive screw. When the machine spindle rotates, the spindle shaft, having only one tooth, for each spindle revolution, corresponding to one turn of the spring, turns the gear wheel one click of the ratchet. The cam length determines the number of bearing turns, when the specified number of bearing turns reaches, the lever releases the clutch, and movement is transmitted to the spindle screw. Thus, the windings are wound with a predetermined pitch.

When a predetermined number of working turns is reached, the cam rests against the ratchet leg, rotates it, is set on the latch, and releases the gear wheel, which returns to its original position (on the stop) under the action of the spring 14. In this case, under the action of the spring, the wheel moves to the right, and the ball, pressed into the housing, falls into the hole at the end of the gear wheel. When moving the wheel to the right, the end presses the latch and the latch releases the ratchet; the cycle is repeated until the spring is rolled over the entire length of the mandrel, after which the machine is turned off with the help of a limit switch. The number of working turns is determined by the position

the ratchet legs relative to the cam face and is set by changing the position of the cover, which is fixed to the ratchet, relative to the body of the switch counter. Slide the ratchet to the right, release from the latch and

rotating in the required direction, set the required number of working turns.

Subject invention

A spring coiling machine that contains mounted on a bed frame, kinematically interconnected and having a common drive, a lead screw of direct action, a lever mechanism for longitudinal wire feed with an adjustable clamp and an alternation mechanism for the working and supporting coils of the spring, characterized in that performance and reliability

the machine, the mechanism of alternation of the working and supporting BITK springs is made in the form of an actuating clutch mounted by a pa screw connected with an auxiliary lever provided in the drive

the regulator, as well as a gear wheel mounted coaxially with the regulator and spring-loaded to its end surface, carrying a ratchet mechanism; in this case, a retainer is inserted into the regulator housing,

into the cavity, which is made on the end surface of the wheel that contacts with the regulator.

IPUZ-2

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