KR100352301B1 - Piston Caulking Devices for Rack Bars for Power Steering - Google Patents

Abstract

The present invention can quickly and easily perform the caulking operation, and can quickly process a large amount of products by an automated production system, as well as ultimately secure the piston firmly to prevent processing defects as a uniform processing form The present invention relates to a piston caulking device of a rack bar for a power steering device, which contributes to product productivity and quality improvement. The first and second caulking devices 200 are provided on both sides of the main plate 20 that is advanced / retracted by the cylinder 40. , 400, the first caulking device 200, the tool body 260 having a plurality of caulking tools 300 in the vertical direction to primary caulking the piston of the rack bar, the cylinder 310 And adjustment screw 361 to adjust the position of the caulking tool 300 in the longitudinal direction and the perpendicular direction of the rack bar, respectively, and the second caulking device 400, the plurality of caulking tools 460 in the vertical direction With body 440 mounted) Thus, by rotating the rack bar entered between the two sides of the caulking device it is possible to caulk the piston by the caulking tool (300, 460).

Description

Piston Caulking Devices for Rack Bars for Power Steering

The present invention relates to a piston caulking device of a rack bar for a power steering device (Piston Caulking Device of Rack Steering System), in particular the first and second caulking device is installed on both sides of the main plate forward / retracted by the cylinder The first caulking device includes a tool body having a plurality of caulking tools in the vertical direction to primary caulk the piston of the rack bar, and each of the rack bar positions by the cylinder and the adjusting screw. And the second caulking device has a body equipped with a plurality of caulking tools in a vertical direction, and rotates the rack bar entered between the two caulking devices to its piston. Caulking operation can be easily performed by caulking each of them sequentially with both side caulking tools, and a large amount of products can be processed quickly by an automated production system. As well as, to a piston of a caulking apparatus rack bar for a power steering system to the ultimate machining while preventing the defects in a uniform processing type firmly fixed to the piston so as to contribute to improve productivity and quality of the product.

In general, the rack bar of the power steering system combines a piston for actuating the hydraulic pressure of the power cylinder, in which a groove is formed on the outer circumferential surface of the rack bar and the inner circumferential surface of the piston to couple the clips between the grooves, and also the outer circumferential surface of the rack bar. One side of the piston is caulked to one side of the piston while forming another groove to prevent separation.

However, in performing such caulking, caulking is usually performed by using manual jigs and clamps, but it is not easy to caulk and is unsuitable for mass processing. In some cases, the quality of the product was greatly degraded.

Moreover, the problem of frequent failure of the apparatus due to the coking failure caused the piston to escape from the rack bar upon excessive pressure.

The object of the present invention is to facilitate caulking and to quickly process a large amount of products by an automated production system, and ultimately to secure a piston while preventing processing defects in a uniform processing form. It is to provide a tool for the piston caulking of the rack bar for the power steering system by fixing to contribute to the productivity and quality of the product.

In order to achieve the above object, the present invention provides the first and second caulking devices on both sides of the main plate, which is moved forward and backward by the cylinder, wherein the first caulking device is vertical in order to primary caulk the piston of the rack bar. And a tool body having a plurality of caulking tools, the cylinder and the adjusting screw to adjust the position of the caulking tool in the longitudinal direction and the right angle direction of the rack bar, respectively, and the second caulking device is a plurality of vertical With a body equipped with a caulking tool of, the rack bar entered through the two sides of the caulking device is to be able to caulk each of the pistons sequentially by the two side caulking tool.

1 is a block diagram of the present invention

2 is a plan view of the present invention

3 is a side view of main parts of the present invention;

Explanation of symbols on the main parts of the drawings

10: base plate 11: transfer guide

20: main plate 21: linear motion bearing

22, 111, 150, 351: stopper 23: guide rail

24: sensor 30, 110, 320: bracket

40, 130: cylinder 41, 131, 311: piston

50, 140: floating joint 60: adjusting block

61, 290, 361, 411: Adjustment screw 100: Stroke control device

120: plate 160, 161: guide

200: first caulking device 210: sub-plate

211: conveying rail 212: dog

220, 440: body 230, 380, 490: shaft

240: lever 241: handle

250: sensor bracket 260, 260A: tool body

270: height 280, 360, 410: control panel

300, 460: caulking tool 310: caulking cylinder

330, 350: stopper plate 340: housing

341 spring 342 stop pin

370: Support block 371, 441 Bushing

381, 510: lock nut 390, 470: thrust bearing

400: second caulking device 420: support

430: pin 450: washer

461: needle bearing 480: spacer

500: Nut 600: Rack Bar

610: Piston

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 is a configuration diagram of the present invention, Figure 2 is a plan view of the present invention, Figure 3 is a side view of the main part of the present invention, as shown in Figures 1 and 2 to form a transport guide 11 on the upper portion of the base plate 10 And a main plate 20 having a linear motion bearing 21 at a lower portion thereof so as to be moved left and right along the conveying guide 11, and for driving the main plate 20. The bracket 30 to which the cylinder 40 is fixed is installed at one side of the 10, and the floating joint 50 is connected to the piston 41 of the cylinder 40 and the side ends of the main plate 20. Connect.

The stopper 22 is coupled to the side end of the main plate 20, and the stroke control device 100 is spaced apart from the main plate 20 at regular intervals to control the movement stroke of the main plate 20. First and second caulking devices 200 and 400 caulking the piston coupled to the rack bar on both upper sides of the main plate 20 is provided.

The stroke control device 100 is for determining the stop position of the main plate 20 during the forward operation of the cylinder 40. The stroke control device 100 is provided with a stopper 111 corresponding to the stopper 22 on the upper portion of the bracket 110. Screwing, installing the plate 120 on one side of the bracket 110, while installing the cylinder 130 on top, connecting the floating joint 140 to the piston 131 of the cylinder 130, floating The stopper 150 is connected to the joint 140, but the side of the stopper 150 is configured to contact the stopper 111.

In addition, in order to guide the movement of the stopper 150, the guides 160 and 161 which are coupled to both lower sides of the stopper 150 are installed on both upper sides of the plate 120.

The first caulking apparatus 200, the sub-plate 210 having a guide rail 23 provided on the upper side of the main plate 20, and the transfer rail 211 to be transported forward and backward along the guide rail 23. And a shaft 230 coupled to the subplate 210 through its center to support the body 220 and the body 220 settled on the subplate 210, and a handle at the top of the shaft 230. It consists of a lever 240 having a 241 and fastened to the body 220.

In addition, the sensor 24 is installed on the side end of the main plate 20, and the sensor 24 is sensed on the side end of the subplate 210 to detect the position of the first caulking device 200 and control its movement. A dog 212 is provided, and the sensor bracket 250 is coupled to one side of the body 220, and the tool body 260 is coupled to the key 270 above and below the body 220 to be vertical. In order to move in the direction, while the adjustment plate 280 is installed on the upper portion of the body 220 by coupling the adjustment screw 290 to the adjustment plate 280 to adjust the vertical position of the tool body 260, Upper and lower sides of the tool body 260 are provided with roller-type caulking tools 300 that face each other in order to caulk the piston of the rack bar primarily.

The tool bodies 260 and 260A are provided at right angles and mount caulking tools of different standards.

On the other hand, to adjust the position of the base plate 10 in the forward and backward direction, and then to install the adjustment block 60 before and after the ground to set the position, respectively, the base plate 10 to the adjustment block 60 And the bracket 320 on which the caulking cylinder 310 is installed in order to fasten the corresponding adjustment screw 61 to the front and rear sides of the crankshaft and move the first caulking device 200 in the front and back directions. Fixed to the rear side, and the piston 311 of the caulking cylinder 310 is fixed to the rear side of the main plate 20 through the bracket 320, the sub-plate ( Retracting and advancing 210 to configure the first caulking device 200 to approach / away from the machining point of the workpiece.

In addition, the stopper plate 330 is fixed between the body 220 and the subplate 210, and the housing 340 is coupled to the front side of the subplate 210 by a spring 341 to the housing 340. The stopper plate 330 is coupled to the upper side to support the stopper plate 330, and the stopper plate 350 is installed on the front side of the subplate 210, and the stopper 351 is coupled to the plate. It is configured to regulate the forward position of the first caulking device 200.

In addition, the adjustment plate 360 is installed in front of the body 220, the adjustment screw 361 is inserted into the upper and lower sides of the adjustment plate 360, and the adjustment screw 361 is fastened to the tool body 260, respectively. By rotating the adjusting screw 361, the vertical position of the tool body 260 can be adjusted individually.

Inside the tool body 260, each of the support blocks 370 into which the bushing 371 is press-fitted has a predetermined inclination angle, and the shaft 380 is rotatably coupled to each other through the bushing 371. The lock nut 381 is fastened to one end to prevent the shaft 380 from being separated, and the other end of the shaft 380 is coupled to the caulking tool 300, and between the caulking tool 300 and the shaft 380. Combining the thrust bearing 390 is configured to rotate the caulking tool 300 smoothly.

On the other hand, the second caulking device 400 is located on the opposite side of the first caulking device 200 to secondaryly caulking the first cocked piston on the rack bar to complete the caulking operation, on the main plate 20 The support plate which is installed before and after and is fixed on the main plate 20 in a state where a position is set by the adjustment screw 411 between the adjustment plate 410 to which the adjustment screw 411 is fastened, and both side adjustment plates 410 ( 420, a body 440 connected to the upper portion of the support 420 by a pin 430, and a bushing 441 coupled between the body 440 and the pin 430.

In addition, the washer 450 is fastened to one end of the pin 430 with a constant torque so that the body 440 can be rotated by an external force, and the front end of the body 440 branches to the upper and lower sides to the upper and lower sides. Each of the roller-type caulking tool 460 is connected to each other, and the body 440 is formed in a depression shape, through the caulking tool 460 therein, and the front, rear and the body 440 of the caulking tool 460. The shaft 490 is coupled through the center of the body 440, the spacer 480, the caulking tool 460, and the thrust bearing 470, with the thrust bearing 470 and the spacer 480 interposed therebetween. .

In addition, the nut 500 and the lock nut 510 are coupled to one end of the shaft 490, and the needle bearing 461 is coupled to the inner circumferential surface of the caulking tool 460 to allow smooth rotation.

Reference numeral 600 denotes a rack bar and 610 denotes a piston assembled to the rack bar.

Therefore, the piston caulking device of the rack bar for the power steering apparatus of the present invention, when the piston 610 is assembled at a predetermined position of the rack bar 600 in the previous work process, the rack bar feeder (not shown) by the first, 2, the rack bar 600 enters the proper position through the caulking device (200, 400), the cylinder 40 is retracted from the neutral position of the main plate 20, the main plate 20 through the floating joint 50 ), The linear movement bearing 21 of the main plate 20 moves backward along the transfer guide 11.

As the main plate 20 retreats, the first caulking device 200 installed on the upper portion approaches the rack bar 600, which is a workpiece, and the second caulking device 400 is spaced apart from the rack bar 600 to be primary. Caulking operation is prepared, and in this state, in order to accurately set the upper and lower caulking tool 300 of the first caulking apparatus 200 at the work point, the caulking tool 300 with respect to the orthogonal direction of the rack bar 600. You can adjust the horizontal or vertical position by finely advancing / retracting or raising / lowering.

Positioning of the caulking tool 300 can adjust the horizontal position by the forward and backward operation of the caulking cylinder 310, the vertical position can be adjusted by the forward / reverse rotation of the adjustment screw 361, When the caulking cylinder 310 is advanced, the piston 311 tries to push the main plate 20 down, but at this time, the main plate of the caulking cylinder 310 is fixed to the subplate 210 by the bracket 320. 20 maintains the constrained state and has a state in which the subplate 210 advances toward the piston 610 while the transfer rail 211 moves along the guide rail 23.

When the sub-plate 210 is moved forward, the first and second caulking devices 200 move integrally, and the upper and lower caulking tools 300 move to the side of the piston 610 coupled to the rack bar 600, The stopper 351 is in contact with the side end of the main plate 20 and at the same time the movement of the first caulking device 200 stops, and at the same time, the edge portion of the caulking tool 300 is caulking the piston 610. The part is contacted to have a constant pressing force.

In addition, when the diameter is changed according to the model of the rack bar 600, the edge of the caulking tool 300 is out of the caulking point or can not enter the caulking part, in this case the position of the caulking tool 300 upward Or adjust downward.

In this case, when the adjusting screw 361 coupled to the upper and lower sides of the adjusting plate 360 is rotated in the forward / reverse direction, the tool body 260 coupled to the adjusting screw 361 moves up or down along the key 270. The vertical position of the caulking tool 300 coupled to the tool body 260 can be adjusted, and the adjustment stroke is made until the edge portion of the caulking tool 300 is pressed against the caulking surface of the piston 610.

When the position adjustment of the caulking tool 300 is completed, the caulking operation of the piston 610 is performed while rotating the rack bar 600, and a caulking having a predetermined inclination angle compressed to the piston 610 according to the rotation of the rack bar 600. The tool 300 rotates from the shaft 380 to press the caulking portion of the piston 610 into the groove of the preformed rack bar 600 to perform the primary caulking operation.

When the first caulking operation is completed while the rotation of the rack bar 600 is completed, the caulking tool 300 is separated from the rack bar 600 to perform the following work process.

In this case, the caulking cylinder 310 is retracted in the reverse order to separate the subplate 210 and the first caulking device 200 from the caulking work part, and the cylinder 40 is advanced to advance the first caulking device 200. ) Is completely removed from the rack bar 600 to return to the initial state.

When the first caulking device 200 is returned, the cylinder 40 is advanced to perform the second caulking operation, and the piston 41 and the floating joint 50 are moved to the main plate according to the forward operation of the cylinder 40. Push 20 to move the second caulking device 400 to the caulking working position of the rack bar 600.

As the stopper 22 of the main plate 20 contacts the stopper 150 of the stroke control device 100 at a certain point in time, the advance distance of the second caulking device 400 is determined, where the second caulking device 400 is determined. The stroke can be adjusted by the stroke control apparatus 100. As the cylinder 130 is advanced / retracted to enter / depart the stopper 150, that is, by selecting the stopper 111 or the stopper 150 The stroke of the second caulking device 400 can be adjusted.

On the other hand, in the secondary caulking operation, the second caulking device 400 is advanced by a predetermined stroke according to the stroke determined by the stroke control device 100, and the edges of the two side caulking tools 460 are primary caulking of the piston 610. The part is pressed, and the rack bar 600 rotates in this state, and the caulking tool 460 is rotated manually, and the secondary caulking is performed by completely injecting the caulking portion of the piston 610 into the groove of the rack bar 600.

When secondary caulking is performed, the cylinder 40 is retracted to return the second caulking device 400 to the initial position, and the rack bar 600 is retracted to perform unloading and to complete one working cycle.

In the above, the caulking tools (300, 460) can be replaced according to the degree of wear, in this case, only the caulking tools (300, 460) can be replaced or the caulking device can be replaced integrally as necessary.

When replacing the caulking tool 300, the lock nut 381 is removed, and then the thrust bearing 390 and the caulking tool 300 are disassembled from the shaft 380. When the caulking tool 460 is replaced, the body ( The lock nut 510, the nut 500, and the shaft 490 may be sequentially disassembled from the 440, and then the caulking tool 460 may be disassembled.

As described above, the piston coking device of the rack bar for a power steering device according to the present invention may be provided with the first and second caulking devices 200 and 400 on both sides of the main plate 20 moving forward / retracted by the cylinder 40. The first caulking device 200 includes a tool body 260 having a plurality of caulking tools 300 in the vertical direction to primary caulk the piston of the rack bar, and the cylinder 310 and the adjusting screw 361 It is possible to adjust the position of the caulking tool 300 in the longitudinal direction and the perpendicular direction of the rack bar, respectively, and the second caulking device 400, the body 440 is equipped with a plurality of caulking tools 460 in the vertical direction It is possible to facilitate the caulking operation by rotating the rack bar entered through the caulking device on both sides and caulking the pistons sequentially by the caulking tools 300 and 460 respectively. Not to be able to process a large quantity of products quickly by all means Ever, while preventing processing defect in a uniform processing type firmly fixed to the piston and has the effect of improved productivity and quality of the product.

Claims (8)

A subplate movably coupled in the longitudinal direction of the rack bar on the main plate, a shaft provided on the subplate, a body rotatable coupled to the shaft, and fastened to a shaft through the body to fix the body on the subplate A lever and a handle connected to the lever, a plurality of tool bodies installed vertically on one side of the body, a support block installed on the tool body, a shaft coupled to have a predetermined inclination angle through the support block, coupled to the shaft and racked A piston caulking device for a rack bar for a power steering device, characterized in that a caulking tool is provided to cooperatively press the side end of the piston into the groove of the rack bar in association with the rotation of the bar. 2. The piston caulking of a rack bar for a power steering system according to claim 1, wherein a cylinder is fixed to the subplate by a bracket to move the caulking tool to a caulking work point, and a piston of the cylinder is connected to the main plate. Device. The rack bar for a power steering apparatus according to claim 1, wherein an adjustment plate having a plurality of adjustment screws inserted therein is installed in the body to adjust the working point of the caulking tool, and the tool body is fastened to the adjustment screw. Piston Caulking Device. 2. The piston caulking device of a rack bar for a power steering apparatus according to claim 1, wherein an adjustment plate is installed on the body, and an adjustment screw for adjusting the vertical position of the tool body is fastened to the adjustment plate. The piston caulking apparatus of claim 1, wherein a sensor is mounted on the main plate to detect a position of the caulking tool, and a dog is fixed to the subplate so as to be sensed by the sensor. 2. The piston caulking device of claim 1, wherein a stopper is provided on the subplate to contact the main plate to regulate the forward stroke of the caulking tool. The power steering apparatus according to claim 1, wherein a stopper plate is installed between the subplate and the body to fix the position of the body, and a housing having a stop pin coupled to the subplate to be caught by the stopper plate. Piston caulking device for rack bar. The piston caulking apparatus of claim 7, wherein a spring is coupled between the housing subplate and the housing to release the stop pin from the outside.

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