SU32890A1 - Removable attachment to a lathe for cutting gear wheels - Google Patents

Description

In lathes, the use of removable gear for cutting gear wheels is already known. Such devices consist of a stand placed on the Kli bed on the bed caliper and carrying the caliper with a spindle to fix the gear blank on it, which is cut by a milling cutter mounted on the spindle of the headstock; devices usually have a separating device using an automatic feed.

In such devices, it is proposed to use a drive from the machine spindle to carry out the feed movement, and the transmission gear system should be mounted on two hinged planks.

In FIG. 1 is a front view of the present tool on a machine; FIG. 2 - side view.

The stowage of the product being cut (FIG. 1 2) is reinforced in a known manner on the pitch spindle 2 rotating in the headstock 3, heated in a rack 4, which in turn is fixed on the carriage 5. The carriage 5 can be moved by

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screws b on the guides of the 7th bed of the carving machine. Dd of different cases of cutting and various sizes of cut products headstock 3 and stand # have different inclinations made by turning in places 9, 10, 7 / and 72.

On the spindle 2, a worm gear 75 is fastened, with which a worm roller 7 is coupled, rotating in bearings / 5. The purpose of the worm pair 7J, J4 is to rotate the cut product according to the movement of the worm milling 8.

The rotation of the latter is borrowed from the machine spindle. To strengthen the spindle 77 with the milling cutter 8 and to actuate the whole mechanism, a clutch 76 is used, which is fixed at the end of the spindle of the machine. The spindle 77 is installed between the center J8 of the coupling J6 and the center of the normal right grandma of the lathe and is attached in some way to the coupling / 6.

The d, l of rotation of the worm shaft M is a hinged guitar consisting of two 7P slats with a set of interchangeable gears 20-28 transmitting the rotation of the coupling 76 to the worm 74 and its own worm wheel 13 and spindle 2 with the cut product 7 Gears 20-28 are selected according to the number of teeth or divisions of the product being cut. Since the axis of the spindle 2 with respect to the axis of the machine can be located at different angles, the JO connection of the roller 29 of the guitar J9 to the worm roller J4 is made flexible, for example, such as Cardan or others with a sliding sleeve 5 /. The product is fed in the horizontal direction by moving the entire carriage 5 with the stand 4 and the headstock along the slide 7 by means of the screw 6. The vertical feed is done by moving the headstock 3 with the product along the stand 4 from the screw 32. Rotation of screws 6 and 32 is done or manually by using the jj handles or for automatic operation from an eccentric 34.

The movement of the cam 34 is transmitted to screws b and. 32 by means of a flexible joint 35 of the type of Boudin or in some other way by means of hinged joints.

To shut off the self-propelled device after the end of work, the ratchet devices 36 are turned off by moving the stop 37 on the carriage, to turn off the vertical movement of the stop on the headstock 3. To execute a signal on the end of work, the rack 38 of the ratchet mechanism after turning off its stop 37 moves to the bell , not shown in the drawing.

A tank 39 and a pump 40 driven from a spindle / 7 are used for milling with coolant / bone. The pump 40 sucks coolant from the reservoir 59 and delivers through the pipe 4J to the working part of the cutter.

To strengthen the mandrel with product 7, there is a removable trunk 42 connected with the headstock 3. For heavier jobs, the trunk 42 is strengthened with removable stops 43, which have a hinged connection with the carriage .5 and the trunk for its different positions.

In the case of installing a device on a conventional simple lathe station for machining a large batch of gears of the same type, a set of gears is replaced by a constant chain and the like gear 46 (Fig. 2) carried out by means of two hinged 7P, I for the usual gear processing by modular milling cutters A separating device 44-45 is provided (FIG. 1).

The subject matter of the invention.

Claims (2)

1. Removable attachment to a lathe for cutting gears, consisting of a rack placed on a bed or a suport of a machine that carries a support, encloses a spindle with a gear hub fixed on it, cut by a mill head mounted on the spindle and equipped with a divider with an automatic feed, characterized in that to obtain the feed motion is driven by the spindle of the machine. 2. The form for making the device according to claim 1, characterized in that the gear of interchangeable gears 20-27-22-23-24-25-26 (guitar) is mounted on two hinged joints of 7P, / 9. -sg FIG. 2. l 4f K /,