SU1018811A1 - Apparatus for drilling and trueing holes in double-curvature panels - Google Patents

Description

The invention relates to the machining of holes in parts of double and single curvature and can be used in mechanical engineering enterprises. The device serves for drilling holes arranged in rows in single and double curvature panels. A device for drilling and countersinks of holes in double-curved panels, comprising a drilling head mounted on a guide, a head motion control unit, a table for attaching a panel, a table leveling system and a guide 1, are known. The disadvantages of this installation are limited technological capabilities and low performance. The aim of the invention is to extend the technological capabilities of a known installation by automatically determining the yiacTKB processing that is within the tolerance, and increasing its productivity by reducing the tool tune-up time to the hole being machined. The goal is achieved by the fact that the device for drilling and countersinking holes in double curvature panels, comprising a drilling head mounted on a guide, a control unit for head movement, a table for fastening a panel, a system for leveling the table and a guide, is equipped with a curvature determination unit for machined panel, made in the form of a zero sensor, located on a gear peifke, rigidly connected to the cylinder body, controlled from the spool, the copying sensor, located on m in the form of a toothed rack hydraulic cylinder rod, and a deflection amount sensor located on a slide connected to a gear that is connected to existing gear racks, the deflection amount sensor connected to the slide, and a copying sensor connected to the head motion control unit . FIG. Figure 1 shows a schematic diagram of the orientation of the tool with respect to a number of holes to be machined; in fig. 2 is a diagram of the mechanism for determining the allowable treatment area in the plane; Fig. 3 is a schematic diagram of the device. The main elements of the device are machined part 1 (Fig. 1), tool 2, guide 3 with a drilling head 4. To determine the allowable machining area L, where the deviation V of the actual axis of the machined hole, which coincides with the axis of the drill, is from Tolerance Urr, serves as a mechanism 5 for changing the base (Fig. 2), containing a toothed rack 6 with a supporting roller 7 and a toothed rack 8 with a supporting roller 9 of a hydraulic cylinder 10, and with a locking slide valve 11, which are located on the slide bar 12 of the slide bar 13, sensor 14 sizes of the program and A parts relative to the line connecting the contact point of support rollers on the workpiece surface. Item 1 (Fig. 3) is fixed on the table 15, mounted on the rods of the hydraulic cylinders 16-18 of the alignment system, connected with pipes and spools 19-21 of the control. . To control the hydraulic cylinders, the sensor block 24 mounted on the carriage 22 mounted on the guide 23 serves as a control unit, containing a zero sensor 25 controlling the position of the support hole in three coordinates, relative to which the holes are coordinated (reference function 7 in Fig. 2) , average sensors 26-28 deflection values & details 1, similar to the sensor 14 (Fig. 2), and copy Dagiki 29-31. All sensors are fixed on the 5th base change mechanism. The guide 3 and the guide 23 are mounted on the hydraulic cylinders 32-34 of the alignment system of the drilling head 4 with the tool 2 with spools 35-37 of control. Command pulses, for example, microswitches 38, serve to convert mechanical movements of sensors into electric ones, and reference holes 39 in part 1 and force set 40 serve as a reference point for longitudinal orientation. The device operates as follows. Install the drilling head 4 with the tool 2 onto the initial processing point of this row of holes of the part 1 according to the program fixed on the guide 3. Fix the part 1 with the power set 40 on the table 15 (Fig. 3). Using manual control, the carriage 22 is mounted with a block of 24 sensors of guide 23 to a support hole 39, previously formed in the part. A zero sensor 25 is then manually inserted into this hole. At the same time, commands from microswitches 38 of zero sensor 25 coordinate the hole 39 with respect to guides 3 and 23 by means of hydraulic cylinders 32-34 of the alignment system from control germs 35-37, commands to which are sent the zero sensor 25 and the copy sensor 30. The simultaneous copy sensors 29 and 31 follow the position of the part 1, and the zero sensor 25 controls the position of the power set 40 and controls the control valves 20, 19 and 21 second hydraulic cylinders 17, 16 and 18. Thus, d ostigaets orientation guides 3 and 23 and a number of processed holes, and feeds the program uv viscous drilling head

310188

4 with tool 2 relative to the reference hole 39. Thus, tool 2 is set against the point of the part 1, in which it drilled a hole, and the subsequent drilling step is set by the program, the carrier 5 of which is guide 3.

Then, on a block of 24 sensors, the permissible amount of deflection D (Fig. 2) of the particular workpiece is set and the mechanisms for changing the base of the copying sensors 29-31 are activated. The mechanism works to increase the base between the zero sensor 25 on the rail 6 and the 29-31 copiruclear sensors (as shown on fit. 2 sword (torches 7 and 9) moved by the gear rack 15 of the hydrocyliidre 10. At the same time, the deflection In the center of the processing zone L (Fig. 1), parts 1 track the middle sensors 27 and 28 (Fig. 3), and the power kit 40 - the middle sensor 26 (in Fig. 2, the sensor 14). 26-28 are automatically set to the midpoint of the treatment area using a slider 13 with gear 12 meshed. with rail 6 and rod-rail 8. In case of any of the 25 controlled points out of tolerance A, calculated by the formula

D g (1 - soShpr),

14 where r - the average radius of curvature of the part or the power set in the treatment area;

il / fjp is the tolerance for the deviation of the theoretically given and actual hole aperture (Fig. 1),

and installed in the middle doors 2b-28, a command is issued to stop the mechanism S of changing the base from the locking valve -wnoTHnKa G1.

The section of a number of holes between the zero sensor 25 and the copying sensors 29-31 is oriented relative to the tool 2 of the drilling head 4. After this, the automatic operation of the drilling head 4. In the automatic one, the holes are drilled and countersinking to the copying sensors 29-31. Then, the feed of the drilling head 4 is stopped and the setting is made for a new machining section. In this case, the last hole of the newly machined width is taken as the reference hole.

The developed schematic diagram of the device provides rational conditions for the processing of responses in double curvature panels. The use of the device is especially effective when processing panels in conditions of small-scale production with a significant difference in wounds in curvature, shape in the plan.

NumM npotuf

Claims (1)

DEVICE FOR DRILLING AND REINFORCING HOLES IN DOUBLE CURVITY PANELS; comprising a drill head mounted on a guide, a head movement control unit, a table for fixing the panel, a table and guide alignment system, characterized in that. that, in order to expand technological capabilities, the device is equipped with a unit for determining the curvature of the machined panel, made in the form of a zero sensor located on a gear rack, rigidly connected to the hydraulic cylinder body, controlled by a zolog, a copy sensor located on a gear rack the rod of the hydraulic cylinder, and the deflection value sensor located on the slider connected with the gear, which is connected with the existing gear racks, and the deflection value sensor is connected with the spool, and the copy sensor is connected to the head movement control unit. a. SU ..,. 1018811 Gut.f