SU921796A1 - Machine for grinding disk saw undercuts - Google Patents

Description

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; The invention relates to a machine tool industry and can be used to grind the undercuts of circular saws.

A machine for grinding circular saws is known, on the bed of which the headstock of the main movement, the right and left headstock with grinding heads connected to drive II are placed.

However, the known machine does not provide high quality products.

The purpose of the invention is quality improvement.

The goal is achieved by the fact that each of the heads is equipped with an autonomous drive with an automatic feed control system installed in contact with an active symmetry control profile introduced into the machine.

The drawing shows the kinematic diagram of the machine.

The machine comprises a frame 1 on which the headstock 2 of the main movement is mounted with a cartridge 3 for mounting the product and a hydraulic cylinder k for clamping it, and two grinding heads 5 and 6.

The rotation of the cartridge 3 with the product is carried out from the actuator 7.

On each grinding headstock mounted spindle 8 with a grinding wheel 9, driven in rotation by an electric motor 10 by means of a V-belt transmission 11.

Claims (1)

Each of the grinding heads 5 and 6 is fed to the workpiece by means of a drive containing a hydraulic motor 12, a worm gear pair 13, a hinge coupling k, a gear train 15, a worm gear pair 16, the worm gear of which is screwed to accommodate aint 17 filing equipped with a mechanism 18 rebound. The rebound mechanism 18 contains an electric motor 19f of a worm gear pair 20 fixed on the feed screw 17, on the free end of which is mounted a disk 21 with cams 22. Depending on the number of cams 22, the amount of rebound is determined. An automatic control system (SAR) 23 is included in the electrical control circuit of the drive for grinding heads to control the feed, depending on the load, one of the grinding heads to an optimum value that does not cause the cutting edge to cut. For manual feeding of grinding heads, a handwheel 2 is provided, the rotation of which through the chain drive 25 and the clutch 2b, activated by the handle 27, is transmitted to the screw pair 13. To control the quality of the treated saw surface, the machine is equipped with an active control mechanism 28. The machine operates as follows. The workpiece is installed in the cartridge 3 of the main engine 2, clamped from the hydraulic cylinder k and driven by the drive 7. From sensors (not shown), the command is given to simultaneously move the grinding heads 5 and 6 to the workpiece and spindles 8. In addition, each of the hydraulic motors 12 transmits the rotation of the screw pair 13 and through the hinged coupling And and the gear 15 to the rebound mechanism 18 with the feed screw 17. The motor 19 of the mechanism 18 of the rebound of each wheel head is turned off, and the latter moves with the feed screw 17 in the direction of the wheel head feed. At the same time, from the engine 10, the rotation is transmitted by means of a V-belt transmission 11 to the spindle 8 with the grinding wheel 9 In the case of non-simultaneous approach of the grinding heads 5 and 6 to the CAP 23 product being machined, depending on the load on the grinding spindles, 8 determines the value of each 3 6 out of them the cutting part of the saw blade causing the blockage. After that the maximum supply of machining of the product is given, and when one of its sides is ready, the device 28 of the active control gives the command to shut off the grinding wheel and, to complete the processing. At the same time, at the command of CAP 23, the feed of the second grinding headstock is determined to a value that does not cause a blockage of the cutting part of the saw to be processed. The product is processed and then a command is sent to bring the active control device 28, which in turn gives the command to turn off the drive of the grinding heads and spin the spindles, and turn on the electric motor 19 of the rebound mechanism 18. The feed screw 17 begins to rotate and screw the wheel a worm pair of 16 gears and a quick removal of grinding heads from the product. The cartridge 3 is opened, the product is released, after which the cycle is repeated. Thus, the synchronous supply of grinding heads to the product and the mechanized drive of their feeds ensures high quality processing of the product and significantly increases the productivity of machines. The invention The machine tool for grinding the undercut of circular saws, on the bed of which the headstock of the main movement, the right and left headstock with grinding heads connected to the drive are located, characterized in that, for the purpose of quality improvement, each head is equipped with an independent drive with an automatic adjustment system filing, installed with the possibility of contact with the introduced into the machine mechanism for active control of symmetry of the profile of the processed product. Sources of information taken into account during the examination 1. USSR author's certificate W 325161, cl. B 3/08, 1963