SU105088A2 - Adaptation to multi-spindle semi-automatic lathe for automatic installation in the chuck and removal of bearing ring blanks - Google Patents

Description

In the device on the main bus. St. No. 95385, the mechanism for switching the oil supply valve to the cam clamp does not ensure stable operation, and the locking system of the station in the event of an incomplete move of the rolling pin is executed primitively using limit switches.

The device made according to the invention does not have these disadvantages. They are eliminated by applying a cam-pinion gear to the spool controlling the oil supply through the crane to the cam clamp, and the machine is locked by a differential valve acting on the machine-start coupling when the rolling pin is not sent in both the forward and reverse directions.

The drawing schematically shows the adaptation to the multi-spindle semi-automatic lathe.

The cam-rack mechanism consists of a cylinder / cam 2 mounted into the body, whose shaft 3 at the free end is equipped with a gear that is coupled to the rack 4 of spool 5, controls the supply of oil IB crane 6, and fork 7 interacting with crackers 8. Cam 2 when moving the cylinder body J interacts with the roller 9 fixed on the spring-loaded spring 10 lever 11 capable of turning an axis having a limited translational movement.

The locking system consists of a valve box 12, a front locking cylinder 13, a rear locking cylinder 14 and a valve 15 for blocking the spindle drum. The valve box communicates with the pressure reducer 16, the working cavity 17 of the rolling pin cylinder 18, the front locking cylinder 13 and the spindle drum locking valve 15 with the rear locking cylinder 14. A differential valve is located inside the valve box 12

№ 105088

19 with a rod 20 and a valve-valve 21 reverse with a rod 22. During operation, the rod 20 interacts with the stop 25, and the rod 22 with the stop 24, reinforced with help, and the brackets on the clutch 18. The piston 25 of the rear locking cylinder 14 and the piston 26 of the front locking cylinder 13 is articulated with a clutch disengagement mechanism.

The hydraulic mode of the device is adjusted in such a way that the reduced oil pressure is supplied; its system exceeds the pressure required for repositioning the rolling pin by about 4-6 atm. As a result, the pressure on the differential valve 19 is from the side the cylinder 17 of the rolling pin cylinder, less pressure, the arrival of w, its on the opposite end of the valve n, despite n: the presence of the stem 20, the force acting on it on the valve from the stem, is greater. It is in the extreme left position, due to the communication of the working cavity 17 with the gear 16.

When a rolling pin is not sent due to any malfunction, the pressure in the working cavity 17 increases to the pressure of reduction, the differential valve 19 is mixed, to the right and stops the supply of oil to the working cavity 17 of the cylinder. At the same time, the access of oil to the front locking cylinder opens, the piston 26 is mixed, and with its stem acts on the clutch engagement mechanism. The increase in pressure in the left cavity of the differential valve 19 also occurs in the extreme position of the rolling pin 18 when the ring blank is seized or fed. A false pulse for the operation of the clutch release mechanism; the camshaft is not allowed, since the rod 20 will interact with the stop 23, will ensure the corresponding position of the differential valve 19.

The disengagement of the camshaft clutch in case the cycle of removal and installation of the rings is not completed is achieved with the help of the spool valve 21 and the spindle drum locking valve 15 and the rear locking cylinder 14 connected in series with it.

Subject invention

Claims (2)

1. Adaptation to multi-spindle semi-automatic lathe for automatic insertion into chuck and removal of bearing ring blanks, according to ed. St. L 95385, distinguished by the fact that, in order to improve the control of the oil supply through the crane to the cam clamp, it is applied to the slatted rack, interacting with a translationally moving rotary spring-loaded lever and performing different positions of the slide during each stroke of the head. 2. The form of the device according to claim 1, characterized in that, in order to prevent the machine from crashing when the rolling pin is incomplete, the device has a blocking system having a differential valve, one side of which is connected to the cavity of the working cylinder, and the other is under constant pressure 3. The form of the implementation of the device according to claims. 1 and 2, characterized in that, in case of an incomplete rolling motion, pressure equalization on both sides of the valve causes the valve to move less on its working surface, thus providing fluid to the cylinder, which deactivates the clutch of the machine camshaft. 355 KN | t-; i4; / 7 / 7U Hodgalobni US mm Fig 2 From npafou bands / pi y lindra From the prab god of the cavity, nor the core of Z / -, olib I Nz praboy cylinder cavity From prab cylinder cavity