Auxiliary device for improving rudder blade machining precision

[0023]Example one

[0024]SeeFigure 1-3, An auxiliary device for improving the processing accuracy of rudder blades, comprising a cross plate 10, the top of the cross plate 10 is fixedly connected with a telescopic aligning device 5, the telescopic aligning device 5 includes a box body 20, the box body 20 A cylinder 16 is fixedly connected to the inner bottom of the cylinder 16, and a sliding rod 13 is fixedly connected to the top of the cylinder 16. The sliding rod 13 is in the shape of a truncated cone, and the side with a larger bottom area of ​​the sliding rod 13 is fixedly connected to the cylinder 16, and The top of the sliding rod 13 is fixedly connected with a baffle 14, the four sides of the outer wall of the box body 20 are slidably connected with a telescopic rod 6, and one end of the telescopic rod 6 located inside the box body 20 is fixedly connected with a slider 15; The sliding block 15 is slidably connected to the sliding rod 13, the end of the telescopic rod 6 away from the sliding block 15 is fixedly connected with an extrusion plate 7, and the top of the telescopic aligning device 5 is fixedly connected with a rudder blade cone processing device 18, so The four ends of the cross plate 10 are movably connected to the movable plate 1, and the four ends of the cross plate 10 are provided with sliding grooves 2 that are adapted to the movable plate 1, and the sliding grooves 2 and the movable plate 1 Sliding connection, the movable plate 1 is provided with multiple sets of equally spaced positioning holes 3, the cross plate 10 is provided with mounting holes with the same diameter as the positioning holes 3, between the positioning holes 3 and the mounting holes A positioning pin 8 is inserted, a chuck 9 is fixedly connected to the top side of the movable plate 1, and a non-slip pad 17 is fixedly installed with the chuck 9 on one side of the box body 20. The chuck 9 is connected to the extrusion The rudder blade 4 is installed between the plates 7, and the chuck 9 is in contact with the outer wall of the rudder blade 4, the squeezing plate 7 is in contact with the inner wall of the rudder blade 4, and the chuck 9 is in contact with the squeezing plate 7 and the rudder blade 4. The sides that are in contact are bent into an arc.

[0025]The working principle of the present invention is: before use, pull the movable plate 1 outwards, place the rudder blade 4 between the chuck 9 and the extruded plate 7, so that the extruded plate 7 is located in the inner hole of the rudder blade, and then start the air cylinder 16 , The front end of the air cylinder 16 stretches, driving the sliding rod 13 to rise, so that the sliding block 15 slides down along the outer surface of the sliding rod 13. The up and down design of the sliding rod 13 is uneven, so that when the sliding block 15 slides down, the telescopic rod 6 is driven. Move to the outside to move the squeeze plate 7 so that the squeeze plate 7 against the inner wall of the rudder blade hole. Due to the truncated cone-shaped design of the sliding rod 13, it can be ensured that when the sliding rod 13 rises, the four telescopic rods 6 are The moving length of the pressing plate 7 is the same, so that the telescopic aligning device 5 is always at the center of the inner hole of the rudder blade, and the inner hole of the rudder blade can be aligned and installed quickly, without the need for manual dial indicator for continuous correction, reducing labor Cost, increase the installation rate, and then start the rudder blade cone hole processing device 18 to process the inner hole of the rudder blade. Since the device is always in the center position, the rudder blade cone hole processing device 18 is always in the center position of the cone hole to ensure the machining accuracy The same makes the processing speed faster and improves the processing efficiency of the rudder blade cone hole.

[0026]After the alignment is completed, drag the movable plate 1 to the inside, so that the surface of the movable plate 1 and the outer surface of the rudder blade 4 are squeezed and clamped, and then the positioning pin 8 is inserted through the positioning hole 3 and the mounting hole to move The plate 1 is fixed on the cross plate 10, and the other three movable plates 1 are adjusted in turn so that the device is fixed on the rudder blade 4 to ensure the stability of the rudder blade cone processing device 18 during operation. At the same time, the internal anti-skid pad 17 of the chuck 9 The use of chuck 9 makes the connection between the outer wall of the rudder blade 4 tighter, prevents unstable fixation, makes the machining tool shake affects the accuracy of the taper hole, ensures the stability during machining, and makes the workpiece machining more accurate.

[0027]Example two

[0028]On the basis of embodiment 1, due to the sliding connection between the telescopic rod 6 and the box body 20, when the device is installed, as long as the device is tilted, the telescopic rod 6 will slide out of the box body 20, making the installation inconvenient , And the extruded plate 7 will also hit the chuck 9, which will lead to a decrease in the alignment accuracy after a long time of use, thereby affecting the processing accuracy of the taper hole. In order to improve it, the following design is made. The inner wall of the box 20 is designed as follows: A fixed plate 11 is welded, and the slider 15 passes through the fixed plate 11, the telescopic rod 6 is sleeved with a compression spring 12, and the two ends of the compression spring 12 are respectively fixed on the slider 15 and the fixed plate 11. The compression spring 12 The squeezing action on the slider 15 makes the slider 15 always close to the sliding rod 13, preventing tilting and sliding out, which is convenient for installation. At the same time, the collision between the chuck 9 and the squeeze plate 7 is reduced to a certain extent, so that the squeeze The plate 7 is damaged, which leads to a decrease in the alignment accuracy and affects the processing accuracy.