SU1036427A1 - Device for investigating thread rolling on process - Google Patents

Description

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The invention relates to the processing of metals by pressure and can be used to study the dependence of a change in the diameter of a part on the radial movement (deepening into the material of the workpiece) rollers when rolling helical surfaces, on roll forming machines. A device for investigating a thread rolling process is known, which contains measurement signal transducer associated with pushers of measuring signals for changing the diameter of the thread being rolled from depressing the rolls into the part and the mechanism for moving the information carrier 1. However, the known device does not allow with sufficient accuracy to register the change in the outer diameter Ad of the rolled part depending on the size of the recess A So in its surface of the rolling roller) due to the complex design of the measuring signal converters having significant overall dimensions, as well as i due to the change the speed of pulling the calibrated flax Tbf relative to the auto-recorders as it winds on the drive drum. The purpose of the invention is to improve the accuracy of recording measuring signals. This goal is achieved by the fact that, in a device for examining a thread rolling process, comprising a pusher and a converter of measurement signals associated with them and a change in the diameter of the roll profile from recessing the rollers into a part of the thread and the information carrier with the mechanism of its movement, the converter of measurement signals is made in the form of two rack-and-gear gears with recorders of the rails, the information carrier is made in the form of a blanket with a calibrated grid applied on it, and the device is equipped with an autonomous block VK li ne and off moving mechanism of the information carrier. In addition, the device is equipped with a movable support plate with an installation risk for alignment of the position 5lz: 1 is relative to the recorder mounted on the mechanism for moving the blanket. In this case, the device is equipped with rubberized cylindrical sections of pulleys and flexible couplings intended for the mechanism for moving the blanket. FIG. 1 shows a device, front view; Fig 2 is the same, top view; in fig. 3 - system of transducers of measuring signals; Fig., Mechanism of carrier movement (blanket). The device includes a co 1 (with m mounted on it: an enum 2 for moving the information carrier — a blanket with a calibrated grid on it and a measuring signal converter 3), which is located on the platform (4 machine headstock). SFG, 3) consists of two gear-rack gears associated with a pusher 5 mounted on a movable head of the machine and in contact with a pusher 6 that rolls over a part. The first system consists of a gear 7 connected with gears m on the axis 8 of the gear wheel 9. On the same axis, the gear wheel 10 is fixed, which is engaged with the wheel 11 mounted on the axis 1 .. The gear wheel 13 is also strengthened on the latter, which is in gear with the recorder 14 equipped with the recorder 15, The second system includes a pusher 6, which is provided with an orienting orientation of its position and a finger 17 entering the helical groove of the gear 16 hub. The wheel 16 is engaged with the gear wheel 18 ,, on the same axis with which the gear wheel 19 is engaged. with equipment A recorded recorder 20 is a toothed rack 21, PP.YKI 7.15 and 21 are spring-loaded in the direction of their axes and placed in guides 22. The mechanism for mounting and moving the blanket for registering the change in the Ad-f dependence () consists of a fixed stockhead fixed to the bracket of the machine toolbar (Fig. 4), the fia panels are mounted on the gear wheel 23, the sides of the Tein 2 (, the handle 25 with its position lock and the reel of the retaining plate 2b. The wheel 27 with the step pulley and the step pulley 28 connecting with the first pulley using flexible coupling 29. In shield 2b there are windows (not shown), in which the crackers 30 have guides of the shield and a handle mounted on the panel 1 are mounted. 25. The handle is equipped with a spring-loaded lock (not shown) that fits into the slots (not shown). ) panels 1; On plate 2b, a bracket 31 is fixed with cylindrical directions mounted on it: 32 with springs 33 mounted on them. These springs are their ends in contact with a movable support bar 3 provided with an installation risk for setting the blanket position to record the dependence L ((). Plank 3 is pressed in the normal position by springs 33 to the rubberized cylindrical portions of the smaller diameter of each of the pulleys wheels 27 and a stepped pulley 28. It is brought out of contact with the pulleys by a handle 35 equipped with a spring-loaded retainer. The drive of the mechanism is a pulley - a hub of the gear wheel 23 which is engaged with the spins A knurled wheel 36. Between the brackets 24 and the flap 26 is placed a cylindrical spring 37 for clamping the wheel 27 mounted on the flap 26 to the hub of the wheel 23. The rolling part 38 is placed on the support 39 and is in contact with the rolling roller ko. In the process of rolling the helical profiles On the details, the system of transducers of measuring signals on a moving cable roller works as follows. The pusher 5, when I move it onto the shank of the rail 7, moves the latter while simultaneously turning Otomi Nachod luminant with it wheel hitch lenii wheels 9 and respectively 10, 11 and 13. The simultaneous change schaets Nachod with conductive meshes with gear rack 13 15, 14 equipping itself scribe registering recess in the details of grooving rollers material. The pusher 6 of the second transducer is brought into contact with the surface of the rolling part 38 located 274 on the support 39 and in contact with the rolling roller kO. When moving the pusher 6, the interacting wheels 16 and 18, as well as the last wheel 19 fastened on one axle, rotate, with which the rail 21 moves with a recorder 20, which records the change in the outer diameter of the rolled part. The installation of a calibrated blanket for registering dependencies (L5p) is performed as follows. When the handle 35 (Fig.) Is pulled away, the spring-loaded support nnaiH comes out of contact with the wheel pulley 27 and the wheel 28. A blanket is installed on the bar 3 to register the dependence of the change in part diameter on the recess in the surface of the knurling roller. After alignment of the blanket over the mounting risk applied to the plate 34, it is pressed by this plate against the rubberized sections of the wheel pulley 27 and the pulley 28. The process of registration of the dependence of FAL) takes place as follows. On the support 39 (Fig. 3), the part 38 is installed until it comes into contact with the knurled roller 40 of the stationary headstock. A vertical-local movement of the pusher 6 achieves its contact with the surface of the part 38. Then, the movable head of the machine is set in motion until the rolling roller installed in it interacts with the part 33. Simultaneously with this handle 25 (Fig. 4), the flap 2b moves. providing interaction mount; A wheel pulley 27 with a gear 23 hub mounted on it. The wheel pulley 27 and pulley 28 rotate by moving the blanket relative to the recorders 14 and 20. When the blanket pulling mechanism is triggered, the latter moves by an amount multiple to the drive ratio f and the constant coefficient p: b (m) ,,,, and, where i and i - gear ratios of each of the stages of the cylindrical gear and friction gears; the ratio of the smaller diameter of the wheel pulley 27 to its larger diameter interacting with the wheel hub 23. Moving the teller 5 (FIG. 3) of the movable head of the machine causes the reciprocating movement of the rack 7 rotating the gear 9 which is in the gearing and also the wheel TO, by which the rotation is transmitted to the wheels 11 and 13. The wheel 13 moves the second rail 15, the recorder of which on the calibrated R Lanquet records the position of the curve characterizing the movement of the movable babmi of the machine in swirling: and the details of the profile rolls. When moving the rail 7 under the action of the pusher 5, the rail 15 moves the recorder by a multiple of the gear ratio i of the movement transducer of the moving head of the machine: -1 I I - / е1Ь (mm) - р91 - е 1 141з, | - the gear ratios of each of the stages of the cylindrical gear of this mechanism. At the same time, by moving the pusher due to the interaction of the finger 17 mounted in its body with a screw groove in the hub of the wheel 16, the rotation is achieved. wheels 18, as well as the common axis of the wheel 19 connected with it, with which the rail 21 with the recorder 20 moves. The latter reproduces on the Tared Blanket the registration of the position of the curve characterizing the change in diameter of the rolled part 38 depending on the movement of the movable head of the machine. When moving the pusher 6, the rail 21 moves the recorder by a multiple of the gear ratio i of the signal converter for changing the diameter of the rolled part: (, - gear ratios of each of the steps of the cylindrical gear transmission of this mechanism. The proposed device improves the registration accuracy of the measuring signals with reproduction of the schedule of their dependence.

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thirty

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Claims (3)

1. DEVICE FOR RESEARCH OF THE THREADING PROCESSING process, containing a pusher and a converter of measuring signals for changing the diameter of the rolled profile 'associated with it from the recess in the thread of the rollers and an information carrier with a mechanism for moving it, characterized in that, in order to improve the accuracy of registration of measuring signals, the conversion The measuring signal carrier is made in the form of two rack-and-pinion gears with rack recorders, the information carrier is made in the form of a blanket with a calibrated marking a grid, and the device is equipped with a unit for independently turning on and off the mechanism for moving the information carrier. 2. The device according to claim 1, with the fact that it is equipped with a movable support bar with a mounting risk for reconciling the position of the blank with respect to the recorders mounted on the blank moving mechanism. 3. The device according to claims 1 and 2, about t - g, is characterized in that it is equipped with rubberized cylindrical sections of the pulleys and flexible coupling, intended for the mechanism for moving the blanket. Figure 1