SU872202A1 - Hydrocopying carriage to a thread-cutting lathe - Google Patents

Description

(54) HYDROCOPY SUPPORT TO A CARTRIDGE MACHINE

one

The invention relates to a machine tool and can be used in hydrocopy calipers for thread-turning lathes.

A hydropeeder caliper to a thread-turning machine is known, controlled by disc cams through a swinging cam line, which includes a follower probe in contact with the ruler. The caliper is driven by a cross-feed hydraulic cylinder 1.

However, a copy ruler mounted on a three-arm lever, interacting with two cam lobes, is in direct contact with the hydraulic follower probe, and the latter is mounted in the same housing with the cross-feed power hydraulic cylinder. A housing with a power cylinder and a follower valve, located in front of the operator, makes it difficult to control the tuning to the plunging depth on the machine when cutting threads, requiring a constant removal of leakages from the cylinder and the follower valve, which are in the cutting zone, complicate the design of the caliper - due to the supply of hydraulics to the moving parts of the caliper in front of the operator, and impair the external appearance of the machine. In addition, the adjustment of the transverse crawler to the size of the workpiece is made by shifting the slider relative to the body of the power cylinder. This constructive implementation of the caliper has a low lateral stiffness, which reduces its performance and machining accuracy, especially with significant radial loads.

In addition, the front arrangement of the power cylinder causes large

to the inconvenience of replacing or adjusting the copying ruler, which is located between the body of the power cylinder and the transverse slider.

The purpose of the invention is to simplify the design of hydrosupport, increase rigidity and accuracy of processing, improve the convenience of caliper control.

Claims (1)

This goal is achieved by the fact that the hydraulic follow valve and its probe, made in the form of a spherical rotor with the possibility of axial adjustment, are fixed on one end of the transverse crawler on the side of the swinging copier line, and the power hydraulic cylinder of the transverse feed is fixed on the other end of the transverse creeper. FIG. 1 shows a diagram of a hydrocopy caliper when threading a workpiece; in fig. 2 is the same cross section. The transverse slider 1 of the caliper is mounted on the longitudinal slider 2 with the possibility of movement in the direction indicated by the arrows. The slider 3, the swing arm 4 with the vertical axis of rotation, the hydraulic follow spool 5 and the sliding stop 6 for turning on and off the copying system are fixed on the slider 1 on the side of the worker - operator. On the slider 1 from the side opposite to the working operator, the power hydraulic cylinder 7 of transverse feeding is fixed, communicating with the next spool 5. The hydraulic cylinder 7 is fixedly mounted on the longitudinal slider 1. The lever 4 contacts one end with the next spool 5, and the other end through spherical roller gauge 8, having the ability to adjust the offset relative to the lever 4 screw 9 with Copy Rule 10. The latter is mounted on a three-arm lever 11 with a horizontal axis of rotation and is controlled by disc cams 12 and 13, kinematically coupled with the copier, the movement of the longitudinal slide 2 and the machine spindle. The disk cams 12 and 13 are in contact with the three-arm lever 11 by the spring 14, and the contact of the spherical roller probe 8 with the copy ruler 10 is made by the spring 15. The support works as follows. When the movement of the longitudinal slide 2 of the caliper is activated, the stop 6 is removed under the action of hydraulics, releasing the swing lever 4, which is rotated clockwise under the action of the spring 15, and the follower hydraulic slide 5 contacting the lever 4, opening the channel of the hydraulic route to the power cylinder 7, moves transverse slider 1 with cutter 3 and lever 4 fixed on it forward to the product until the roller probe 8 rests on the copy bar 10. During the slide stroke, the three-arm 11 is in contact with the disk with a jaw 13 of the set depth of the thread profile, and during idling the caliper with a disc cam 12 output and input cutter. The cam 13 is rotated periodically during idling of the caliper and depending on the selected number of cutter passes, the difference between the heights of the cams 12 and 13 increases from pass to pass, which increases the angle of rotation of the gauge line 10, and through the system lever 4 - the next slide valve 5, the hydraulic cylinder 7 increases the transverse stroke of the slider 1 with the cutter 3. For a full revolution of the cam 13, a full thread machining cycle is performed, after which a command is given to shut off the longitudinal stroke of the caliper. Simultaneously, the stop 6 extends and the lever 4 rotates counterclockwise, breaking the contact of the roller 8 with the copy ruler 10, acting on the follow valve 5, which opens the hydraulic channel of the hydraulic cylinder 7, transverse slider 1 of the caliper with the cutter 3 is retracted from the product. The processing cycle is over. In the proposed design of a hydrocopy caliper, the transverse rigidity is significantly increased, and consequently, the accuracy of processing, its design is also simplified. The location of the power cylinder on the opposite side of the working operator significantly frees the working area for the maintenance of the machine, allowing easy adjustment to the workpiece size and free access to the copy bar when it is replaced or adjusted. Claims of the Invention Hydro copy caliper to a threading lathe containing a transverse slider and controlled by disc cams through a swinging copier and a hydraulic follower probe in contact with it, connected to a power hydraulic cylinder of the transverse feed of the caliper, which, in order to simplify the design, improve working comfort and ease of operation of the caliper, hydraulic follow valve and its dipstick, made in the form of a spherical roller with the possibility of axially adjustment, mounted on one end of the transverse polzuschki by rocking a guiding line, and hydraulic power cylinder infeed fixedly fastened at the other end of the transverse polzushki. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 336030, cl. B 23 B 5/48, 1967,