SU1051130A1 - Apparatus for hardening products - Google Patents

Abstract

INSTALLATION FOR HARDENING OF PRODUCTS, containing a frame and a burner installed on it with a mechanism for moving it, made in the form of a drive shaft, an automatic control unit of the installation, characterized in that, in order to increase productivity, the mechanism for moving g (the tools are combined in a carrier, rolling pins, housing and carriage, with the carrier is placed on the drive shaft, the carriage is installed on the frame, and the rolling pin in the housing located on the carriage. (L sd 00

Description

11 The invention relates to devices for surface hardening of products and can be used in various areas of mechanical engineering for surface hardening of internal surfaces of products, in particular, in the coal industry for hardening, the stators of hydraulic actuators. A device for surface hardening of parts is known, which includes a hardened hopovka, a copier, a cam shaft and a drive mechanism equipped with a frictional hyperboloid of rotation. 13 , which in turn leads to an increase in the cost of the product. The closest to the proposed technical dryness is the installation of HF hardening of products, containing a stand and a burner mounted on it with its movement mechanism, made in the form of a drive shaft and an automatic control unit, installation penalties 2 The disadvantages of the known device are insufficient productivity and quality of quenching, which is lobular, for example, by the absence of the possibility of reciprocating the burner relative to the quenched surface, O7x; hardening sequences of separate surface areas, etc. The purpose of the invention is to increase the production of the axis. The goal is achieved in an installation that contains a frame and a burner mounted on it with a mechanism for moving it, made in the drive shaft, the unit’s automatic control unit, the mechanism for moving the burner Kinema pesky interacting with each other in shsh, rolling pins, body and carriage, with this carrier is placed on the drive shaft, the carriage is mounted on the frame 5 and the rolling pin in the body mounted on the carriage,. 1 shows a device, side view, in FIG. 2, the same, front view, in FIG. 3 - section A-A on flash, 1, in FIG. 4 - section B-B in FIG. 3, in FIG. 1 a diagram of the movements of the burner, Rotation-gel 2 mounted on the bed 1 was produced with a possible 0.2 rotation in the roller directions of the drive 3 from the drive 4, bpok. 5 automatic control, the device 6 of the translational movement of the burner 7, the bath for cooling the products 8 in the quenching process (not shown). The rotator 2 has supports 9 for the product 8, one of which contains the clamp 10, and also has a copier 11, 1 which can be synchronously rotated with the product 8. The burner 7 is configured for adjustment movement in a vertical plane by means of a device 12 rigidly connected to the mechanism movement, performed in the form of a rolling pin 13, having the possibility of longitudinal axial movement inside the housing 14, due to starting in the last tongue 15 and with the corresponding keyway in the rolling pin 13. Rolling pin 13 is connected to water scrap 16, having a forked shape and fitted with the possibility of turning relative to the shaft 17 of the device 6, containing a screw pair formed by a nut 18 and a screw 19 connected to a 20 "drive. Screw 19 is rigidly mounted (sensor 21 21 of the 22, n-designed) to register the number of revolutions 19. In the housing 23, rigidly connected with the frame 1, mounted are guides 24J along which the carriage 25 moves in the vertical plane, and also the stop 26 is rigidly mounted connected to the shaft 27, which through the spring 28 and the ring 29 is bound to the car 25. In the carriage 25, a fork 31 is mounted on the DZ axis, in which case 14 and cogging stops 32 and 33 are mounted. The center-to-center distance between the ring stops 32 and 33, as well as the race, thin L, selects 5x: The hardenable surface of the product is 8. The device for surface hardening contains two sensors 34 with two flags 35 rigidly fixed on the rotator (one sensor and fdjac are shown). The device works as follows. The working cycle of the device includes continuous hardening of the surface B of product 8 over several bands (in the considered embodiment of the device, hardening of eight bands with a width of 6-8 mm to a depth of 1-1.5 mm is performed) in two zones in areas hardenable surface, located on one and the other ends of the product 8 (each zone contains four Hardening strips). The sequence of strip hardening is as follows: the first band of the first zone - the first band of the second zone, - the second band of the zone - the second riortoca of the second zone, etc. At the end of the quenching of the last (fourth) strip of the second zone, the burner 7 returns to its original position to the first strip of the first zone. Quenching of one strip is performed during one revolution of the rotator 2. After performing preparatory operations such as applying voltage, water, plasma gas, The product 8 is mounted between the supports 9 and fixed by the clamp 10. The product 8 is centered on the pin (not shown) so that the profile of the product 8 coincides with the profile of the copier 11. After the burner 7 is installed, the outgoing In the case of product 8 (Fig. 5a), at a given week distance L (about 5 to 15 mm) from the hardened surface, a back arc is activated. If the block 5 receives commands from the sensor 22 and one of the sensors 34, then the working arc rqpenki 7 and the actuator 4 are turned on. After turning on the actuator 4, the rotator 2 comes into rotation and provides simultaneous rotation of the copier 11 and product 8. The spring 28 presses the carriage 25 and hence the fork 31 with ring lugs 32 and 33 to the copier 11, ensuring their continuous contact during the running-in process. In this case, the distance and center-to-center distance between the annular stops 32 and 33 are chosen from the condition of the normal position of the longitudinal axis of the burner 7 relative to the hardened surface B (Fig. 5a, b, &). Thus, when hardening one strip, the burner 7 makes a returnable HO-4IOC return. in the vertical plane as a result of the spring-loaded execution of the carriage 25 and Ka4, the left and right movement is relative to the axis 30 in the plane, perpendicular to the longitudinal axis of the product 8. When performing the oscillatory movement, the fork 3 1 rotates together with the housing 14 and the rolling pin 13. Thanks to the movable joint rolling pins. 13 with the fork fork 16 and the latter is rejected around the rolling pin 13 and. it also rotates around the shaft 17. When the first band of the first zone is quenched (registered in block 5 by sensor 34), a command is generated to turn off the drive 4 and switch the burner arc from operating mode to standby mode. Further, according to the corresponding command of block 5, a drive 20 and a pair of screws formed by a cable 1-8 and a screw 19 are converted to convert the rotational movement of the drive shaft 20 into the translational movement of the carrier 16 and the rolling pin 13 in the keyway inside the housing 14 and the burner 7 inside the product 8 The burner 7 moves progressively to a distance corresponding to the distance between the first lane of the first zone and the first lane of the second zone, which is recorded by the sensor 22 and block 5. Then the burner 7 stops, the working arc, the drive 4 (if there is a signal la with the sensor 34), and running the process is repeated, but in the opposite rotational direction rotator 2 when the first quenching zone of the first strip that prevents the electric cables (not shown) from damage. The end of hardening of the first band of the second zone is registered by the sensor 34, at a signal of which the arc of the burner 7 is again switched to standby mode through the block 5, and the drive 4 is turned off. The actuator 2O is switched on, moving the burner 7 to the bottom of the first hardening zone of the hardened surface, and the above quenching process is repeated. The technological advantages of the proposed device in comparison with the known ones consist in increasing the productivity while simultaneously reducing the cost of the EYH product, since there is no need for additional treatment of the product after quenching, since sequential quenching of the product along the bands eliminates the distortion of the latter, reducing energy consumption, increasing the period service of the product, the quality of the treated surface.

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Claims (1)

INSTALLATION FOR HARDENING 'PRODUCTS', comprising a bed and a burner installed on it with a mechanism for moving it, made in the form of a drive shaft, an automatic control unit of the installation, which, in order to increase productivity, the mechanism for moving the burner is made in the form of kinematically interacting with each other carrier, rolling pin, housing and carriage, while the carrier is placed on the drive shaft, the carriage is installed on the bed, and the rolling pin in the housing located on the carriage. cpur l 1 1051