SU1304989A1 - Lathe tailstock - Google Patents

Abstract

The invention relates to the field of machine tools and can be used in turning machines for machining products clamped in centers. The aim of the invention is to increase the reliability of the fixation of the headstock on the guides by introducing pre-fixation elements and improving the serviceability by ensuring the possibility of Aelitol line A-A-A is turned

Description

These manual movements of the headstock during adjustment. An additional hydraulic cylinder 3 is inserted into the automatic fixation mechanism, the rod of which is equipped with a toothed nozzle 6, which interacts with the toothed rack 7. The transfer to the manual control mode of the movement of the headstock is performed by turning 1

The invention relates to the field of machine tool construction and can be used in turning machines for machining products manufactured in machining centers.

The aim of the invention is to increase the reliability of the fixation of the headstock on the guides due to the introduction of pre-fixing elements and the increased ease of maintenance due to the possibility of manual movement of the headstock during commissioning.

Figure 1 shows the back of the headstock, cross section; figure 2 - section aa in figure 1; on fig.Z - section BB in 5 figure 2; figure 4 - section b-In 2; on fig.Z - node I in figure 2.

The tailstock includes a housing 1 mounted on the guides 2 of the machine hydraulic cylinder 3, the stem 4 of which 20 is spring-loaded 5. At the end of the stem 4 a replaceable notched nozzle 6 is fixed, interacting with the rack 2 mounted on the guide 2. Control of the position of the stem 4 creature It is set using limit switches 8 and 9. On axis 10, lever 11 is installed, with one arm interacting with gear nozzle 6, and the second with screw 12. Gear 13 13 is installed on the second arm of lever 11, which is rotated by spline shaft 14. Stop 15 serves for installation when the gear 13 is withdrawn from an aging unit with a toothed rack 7. Fur-35 automatic fixing of the tailstock is made in the form of hydraulic cylinders 16 and 17, as well as hydraulic cylinder 3. Pinol 18 with rear center 19 is pressed with an electromechanical drive 20 .

The proposed device works as follows.

25

The lever 11, which disengages the gear nozzle 6 and engages with the gear 7 gear 13 mounted on the lever 11. The gear is rotated by acting on its shaft, which is provided with a wrench. 5 or

five

0 5 0

five

If it is necessary to move the tailstock, it is gripped by a special locking device of a coordinate caliper (not shown). In this case, pressure is supplied to the rod end of the hydraulic mechanism 3 and the rod 4 is pressed out, in which the notched nozzle 6 is pulled out of the hook with the toothed rack 7. This position of the rod 4 is fixed by the end switch 9. As a result, the pressure from the hydraulic cylinders 16 and 17 and rear The headstock is ready to move to the desired position with the help of a coordinate caliper, which performs the required positioning of the tailstock in accordance with the program. Next, pressure is supplied from the rodless cavity of the hydraulic cylinder 3, as a result of which the notched nozzle 6 engages with the toothed rack 7, basing the tailstock on the machine guides. This position is fixed by the limit switch 8. At his command, pressure is applied to the hydraulic cylinders 16 and 17, which finally fix the tailstock. After that, the coordinate caliper goes to its original position. On command of the electromechanical actuator 20, movement and clamping of the quill pulses 18 with the center 19 to the workpiece is performed.

Next is turning the product. In the event of an emergency associated, for example, with a sudden & 1 m disconnection of the power supply, a breakage of hydro-communications, etc., the tailstock is held by the stem 4 of the hydraulic cylinder 3 under the action of a spring.), Resulting in a rigid fixation of the tailstock on the machine guides and

It prevents the workpiece from moving out of the machine chuck.

If it is necessary to perform adjustment operations, painting, preservation, etc., the rotation of the screw 12 affects the second arm of the lever 11, which, turning around the axis 10, withdraws the gear nozzle 6 from the gearing with the rack 7. The gear 13 enters into engagement with the toothed rack 7. Next, the key 14 is used to rotate the shaft 14, resulting in the necessary movement of the tailstock.

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Claims (1)

Invention Formula The back headstock of the lathe, containing the body with quill, the spring-hydraulic mechanism of the automatic O five 0 The fixation of the headstock on the bed guides, the toothed rail mounted on one of the rails, and the gear wheel kinematically connected to the rail, characterized in that, in order to improve the reliability of fixation and ease of maintenance, it is additionally equipped with a single-acting power cylinder with a fixed on its rod with the ability to interact with the rack with a toothed nozzle and two shoulders lever mounted on the housing with the possibility of rotation and fixation in a predetermined position and the interaction of one of the shoulders with a notched nozzle , The pinion is kinematically associated with the rack, is fixed to the second arm of a two-armed lever with the possibility of rotating scheni °. 1304989 . ,,,, „turned  - turned FIG, H Editor L.Gratillo Compiled by A. Abramov Tehred L. Serdyukova Proofreader A.Obruchar Zagaz 1372/12 Circulation 976 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and printing company, Uzhgorod, st. Project, 4