SU1409670A1 - Induction heating apparatus - Google Patents

Description

The nut 2 is fitted with a nut 15, kinematically connected with the nut 14. A screw 17 interacts with the nut 15, / staked in the carriage 2 and connected to the carriage 4. In the carriage 2, the carriage coupling mechanism 18 is mounted with a nut 15 and the coupling mechanism 19 | carriage with a bed 1, The presence of mechanisms 18 and 19 of the clutch, the installation of nuts 14 and 15 spindle displacement1409670

neither the carriages 2 and 4 in the carriage 2 of the longitudinal course allows controlling the movement of the carriages without breaking the kinematic connection of the driving screws 13, 17 with the drive, which simplifies the software system for controlling the movement of the heating circuit and increases the accuracy of the movement of the contour relative to the heated surface of the part. 2 3.p. f-ly, 7 ill.

one

The invention relates to heat treatment and can be used in various magnetostroke areas for heat treatment of the surfaces of products after induction heating or melting of coatings applied to the products by thermal spray coating.

The purpose of the invention is to simplify the design and improve the quality of products.

Figure 1 shows a general view of the installation for induction heating, front view (heating of the part v of the body type is shown) in FIG. 2, section A-A in figure 1; on fig.Z - section bb - in fig, 1; in Fig.4 a section BB-figa; in FIG. 5, node I in FIG. and FIG. 6 is a plan for heating a flat panel; Fig. 7 is a block diagram of the links of the actuators | with the program control system.

The installation for induction heating (Figs 1 and 2) comprises a bed 1, a longitudinal carriage 2 installed in the guides 3 of the bed 1, a transverse carriage 4 mounted in the guide rollers 5 of the carriage 2, and mounted on the carriage 4 is a heating circuit 6. For rotating parts such as rotation bodies, a front drive head 7 and a back headstock 8 with center 9 and its pressing cylinder 10 are provided. For fastening other parts, an Ient 11 is provided for fastening the part on the frame 1, On the bed 1 mounted actuator 12 with adjustable speed rosty vra-; appreciate. With the actuator 12 is connected chassis EVINT 13 (figure 4), interacting with the nut 14 installed in the carriage

2 rotatably. The carriage 2 is also rotatably mounted with the nut 15, which is kinematically connected with the nut 14 of the gear transmission system 16. A screw 17, which is mounted axially in the carriage 2 and limited to rotation, interacts with the nut 15. The screw 17 is connected to the carriage 4. In the carriage 2, the mechanism 18 for coupling the nut 15 to the carriage and the mechanism 19 for coupling the carriage 2 to the frame 1 are mounted. The mechanism 18 is made in the form of a sliding rod 20 installed with the possibility of interaction with the sprocket teeth .21 mounted on the nut 15 can be rotated on the nut 15. The angle of rotation of the sprocket 21 on the nut 15 is fixed.

a clampless clamp 22 (for example, a manual tangential clamp). The mechanism 19 (FIG. 3) is made in the form of a toothed rack 23 mounted on the frame 1 parallel to the direction of travel of the carriage 2 and gear 24, which engages with the rail 23 and is mounted in the carriage 2 with the possibility of rotation. The rotation angle of the gear 24 in the carriage 2 is fixed by a stepless clamp 25, which is connected with a sliding rod 26. The drive 12 through a gyristor converter 27 is connected with the automatic program control system 28, a sensor 29

speed communication (tachogenerator) and feedback sensor 30 along the way. The sensor 30 is connected to the gearbox 31, which is connected to the drive 12 and the lead screw 13. With

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The 28 controls are also linked by clutches 18 and 19.

vka works as follows

in n sh w sh to k l n m m

The workpiece, for example, a part 32 of a rotating body type with a variable diameter, is installed in the head of the headstock 8 and the gland center 9 of the tailstock. The iljJH coupled mechanism 18 and the disengaged mechanism 19 turn on the actuator 12 and, by rotating the lead screw 13 while the nut 14 is retarded from rotation, the carriage 2 moves along the part 32 to its original position, for example, to the area of the headstock 8. The predetermined initial position is fixed as zero coordinate when programming moving the inductor 6 along the part 32. Then the mechanism 19, i.e. pinch gear 24 in the carriage 2, press clamp 22 and, leaving the coup. The drive rod 20 with an asterisk 21 includes the drive 12. Since the carriage 2 is engaged with the bed 1, as the spindle 13 rotates, the nut 14 rotates together with it and rotates the nut 15. The asterisk 21 remains fixed. When the nut 15 is rotated, an axial movement of the screw 17 and the carriage 4 associated with it occurs. The carriage 4 moves to a predetermined initial position, which is fixed as the zero coordinate when programming the movements of the heating circuit 6 across the part 32. At this zero coordinate, clamp 22 nut 15. Based on the selected zero coordinates and the configuration of the part 32, a program of longitudinal and transverse movements of the heating circuit 6 relative to the surface of the part 32 is set. Details 32 and automated movement of the contour 6 along and across the part 32. The program for moving the contour 6 also includes coupling and disengaging the mechanisms 18 and 19. First, the mechanism 18, i.e. the rod 20 is withdrawn from the teeth of the sprocket 21. The actuator 12 is activated. At the same time, the screw 13, the nuts 14 and 15 and the sprockets 21 rotate. The carriage 4 moves across the part 32 by a predetermined distance. When the carriage 4 reaches the predetermined coordinate, the actuator 12 is turned off.

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This coordinate provides -., - nn. the size of the technological gap between the inductor and the heated surface of the part 32. This coordinate is fixed by the mechanism 18, i.e. the rod 20 is inserted into the cavity of the teeth of the sprocket 21c. The resolution of the rod 20 for fixing the angular displacement of the sprocket 21 with the nut 15 has almost no effect on the size of the technological gap between circuit 6 and the surface; ; the bone of part 32 (0.5-2 mm) When the number of teeth in the sprocket is 100 and the lead thread pitch is 10 mm, the inductance of the transverse coordinate of the inductor is O, 1 mm, which is less than the tolerance on the technological gap between the contour and the heated surface. After the surface is heated, at the given coordinates, the mechanism 19 is disengaged, leaving the mechanism 18 coupled, and the actuator 12 is turned on. At the same time, the screw 13 rotates and the nut 14 is braked from rotating into; the housing by the mechanism 18 moves the carriage 2 along the part. After moving the carriage 2 for a predetermined distance, the actuator 12 is turned off and the next part of the surface of the part 32 is heated. If necessary,. heating other, non-horizontal sections of the part .32, for example, fillets 33 or section 34 (Fig. 5), carriage 2 automatically stops at a predetermined coordinate providing the necessary technological gap between circuit 6 and the surfaces, after which mechanism 19 interlocks. Since the Z6 stem provides infinitely pinned gears 24 in the housing, the inaccuracy of fixation by the mechanism 19 of the longitudinal coordinate of the contour 6 is equal to the gap in the engagement of the pinion 24 with the rail 23, the value of which is less than the tolerance on the technological gap between the inductor and the heated surface. To heat the surface 29, the mechanism 18 is disengaged, the actuator 12 is turned on, and the loop 6 is moved in the transverse direction to the predetermined coordinate. Thus, by means of inclusions according to a predetermined program of the drive 12 and mechanisms 18 and 19, the longitudinal and transverse movements of the contour 6 along the heated surfaces of the part 32 and the heating of these surfaces are performed. After completion of the heating program, circuit 6 automatically returns. on the initial zero: ry coordinates.

I When heating a cylindrical part of the same diameter, the automated carriage movement of the carriage 2 along the part is fixed with a permanently coupled || (mechanism 18, and an unlinked mechanism ijie 19.

In order to heat the parts 35 with a flat top, circuit 6 is installed in Fig. 6) and part 35 is mounted on elements 11. The movement of the inductive 6 with respect to part 35 is carried out in the manner described.

During the movement of the inductor, the sensor 29 maintains a constant rotational speed, set by the control system 28 and necessary for the process to be performed. The sensor 30 is also driven from the gearbox 31 and provides the control system 28 with the position of the heating circuit in two coordinates alternately with high accuracy.

Claims (3)

1. Installation for induction heating, containing a frame, a longitudinal carriage, a carrier carriage one. 12 sree..1 transverse travel with a heating circuit, spindle screws with nuts for moving carriages mounted in a longitudinal carriage, and a screw rotation drive associated with an automatic program control system, which, in order to simplify the design and improve the quality of products, The installation is equipped with mechanisms for coupling the longitudinal carriage to the frame and one of the nuts, the nuts being rotatably mounted and kinematically interconnected by a gear. 2, Installation according to claim 1, characterized in that the clutch mechanism of the longitudinal carriage co. The bed is made in the form of a toothed rack mounted on the bed along it, meshing with the rack gear mounted in the carriage so that it can be rotated and steplessly clamp the gear in the carriage. 3. Installation pop. 1, different. due to the fact that the mechanism of coupling between the carriage and the nut is made in the form of a sprocket attached to the nut coaxially with it and a sliding shaft interacting with the teeth of the asterisk. R I-1 3 II  - -UUU 1e% HU9LLLLLL rirl 73 2nd 7S P -Ji f1 / g. 5 2B 78 27 12 thirty srig.6 1c J9 J / /five /four 7 17 / 6