WO2019119512A1

WO2019119512A1 - Steering knuckle machining process

Info

Publication number: WO2019119512A1
Application number: PCT/CN2017/119798
Authority: WO
Inventors: 黄晨
Original assignee: 苏州臻嘉辰精密机械有限公司
Priority date: 2017-12-20
Filing date: 2017-12-29
Publication date: 2019-06-27
Also published as: CN107984178B; CN107984178A

Abstract

A steering knuckle machining process, comprising: first clamping a steering knuckle workpiece (1) forwardly onto a center hole machining fixture for machining; clamping the steering knuckle workpiece (1) reversely onto a horizontal fixture for machining; and clamping the steering knuckle workpiece (1) laterally onto a lateral fixture for machining. According to the steering knuckle machining process, the steering knuckle workpiece (1) is subjected to forwards clamping, reverse clamping and lateral clamping by means of the three fixtures correspondingly. Different parts of the steering knuckle workpiece (1) are machined in sequence. The machining process is optimized. The tool changing frequency and the tool feeding time in the machining process of the steering knuckle workpiece (1) are reduced, and the working efficiency is improved.

Description

Steering knuckle machining process

Technical field

The invention relates to a steering knuckle machining process.

Background technique

The steering knuckle is one of the main parts on the steering axle of the car. It can make the car run stably and sensitively transmit the direction of travel. The function of the knuckle is to bear the front load of the car, support and drive the front wheel to rotate around the kingpin to turn the car; As the demand for automobiles increases, the output is getting higher and higher, and the processing efficiency of the knuckle is becoming more and more stringent. However, the structure required for machining on the knuckle is complicated, the process is more, and the existing processing The method and process are difficult to meet the production requirements of the steering knuckle.

Summary of the invention

In view of the above-mentioned technical problems, the object of the present invention is to propose a knuckle machining process which improves the machining efficiency by optimizing the machining process of the knuckle.

The technical solution of the present invention is implemented as follows: a steering knuckle machining process comprising the following steps:

1 The front side of the knuckle workpiece is clamped on the center hole processing jig; the inner diameter of the front side of the roughing center hole; the inner diameter of the reverse side of the center hole of the rough finishing car; the inner diameter of the front side of the center hole of the finishing car; the ring groove of the center hole of the car;

2 Reversely clamp the knuckle workpiece on the horizontal clamp; mill the two sides of the end of the brake arm; drill the end of the brake arm and chamfer the front and back sides of the hole; a tapered surface of the side surface and the end portion; a rough milling control connecting arm and two sides of the shock absorbing arm; milling an outer end surface of the connecting arm; drilling a hole on the outer end surface of the control connecting arm, and milling the hole;

3 Align the knuckle workpiece laterally on the lateral clamp; finish milling the control arm and the two sides of the damper arm; drill and chamfer the side of the damper arm; drill and pour the side of the control link arm Angle; along the center of the control connecting arm; drill a taper hole at the end of the steering arm; mill the end face of the ABS connecting block, drill a hole in the end face, and tap the bottom hole.

Preferably, in the step 1, the diameter of the front surface of the roughing center hole is 61.3 mm; the diameter of the reverse side of the center hole of the rough finishing car is 62 mm; the diameter of the front surface of the center hole of the finishing car is 61.8 mm; the diameter of the ring groove of the center hole of the vehicle is 65mm; in the step 2, the diameter of the end of the brake arm is 12.2 mm, and the diameter of the hole on the outer end surface of the control connecting arm is 15 mm; in the step 3, the diameter of the hole on the shock arm is 12mm, the diameter of the drill hole on the control connecting arm is 10mm, and the end face drilling standard of the ABS connecting block is M8.

Preferably, the central hole processing fixture comprises a disc holder and an oil circuit assembly, and the disc seat is provided with a brake arm pressing seat, a steering arm pressing seat, a steering arm top block, a control arm top block, and a damping arm a top block, a side top block and a manifold block; the oil passage assembly is engaged with the above components through a manifold block; the brake arm pressing seat and the steering arm pressing seat are both passed through a cylinder, a press arm and a block structure Cooperating with the steering knuckle workpiece, the steering arm top block, the control arm top block, the shock arm top block and the side top block are hydraulic topping members; the brake arm pressing seat cooperates with the brake arm, and the steering arm is pressed tightly The seat block and the steering arm top block cooperate with the steering arm, the control arm top block cooperates with the control connecting arm, the shock absorber arm top block cooperates with the damping arm, and the side top block cooperates with the ABS connecting block.

Preferably, the steering arm pressing seat and the steering arm top block are respectively disposed on two sides of the steering arm; the control arm top block is matched with the front end surface of the control connecting arm; the damping arm top block and the shock absorbing arm Cooperating with the side of the brake arm; the side top block mates with the front end of the ABS connecting block.

Preferably, the disc holder is further provided with a plurality of weights, and the plurality of weights are arranged in a stack.

Preferably, the horizontal clamp comprises a base, the base is provided with a main pressing seat and at least one set of horizontal clamping assemblies, the horizontal clamping assembly comprises a positioning seat, a clamping seat and two secondary pressing seats; the main pressure a pressing arm is arranged on the clamping seat, a steering arm clamp and a fixed head are arranged on the clamping seat, and a hydraulic head is arranged on the steering arm clamping block; the main pressing seat and the two auxiliary pressing seats are respectively located in the positioning seat On both sides, the secondary pressing seat is provided with a hydraulic push rod, a fixing block and a Z-shaped pressing arm; one end of the lower part of the Z-shaped pressing arm is hinged with the hydraulic push rod, and the other end is connected with the fixing block through the connecting plate, and is connected The two ends of the plate are respectively hinged with the fixed block and the Z-shaped pressing arm, and the upper end of the Z-shaped pressing arm is provided with a pressing block.

Preferably, the horizontal clamping assembly has two groups, and the two sets of horizontal clamping assemblies are symmetrically disposed on both sides of the main pressing seat, and the main pressing arm on the main pressing seat is a double-head pressing arm, and the central portion of the main pressing arm It is hinged with the telescopic rod portion of the main pressing seat, and the two ends of the main pressing arm cooperate with the two sets of horizontal clamping components to clamp the workpiece.

Preferably, the clamping seat is provided with a vertical guiding groove, and the base is further provided with a locking pin that cooperates with the guiding groove.

Preferably, the lateral clamp comprises a bottom plate, and the bottom plate is provided with at least one side plate frame, wherein the side plate frame is provided with a lateral oil cylinder, a brake arm positioning pin and a plurality of blocking pins; the lateral oil cylinder is provided with a side clamping assembly that cooperates with a knuckle workpiece, the brake arm positioning pin mates with the brake arm; the lateral clamping assembly includes a hydraulic plug, an oil seal, a set pin, a set ring, and a lateral socket; The hydraulic plug is disposed in the lateral cylinder, the oil seal is disposed at the port of the lateral cylinder, the hydraulic plug is connected to the tightening pin through the oil seal, and is locked by the locking sleeve, the socket is provided with a socket, and the tightening ring is passed through the socket Cooperating with the pin; the lateral socket is fixedly coupled to the side frame, and the lateral socket cooperates with the pin and the set ring to clamp the knuckle workpiece.

Preferably, the bottom plate is provided with two symmetrical side plates, and the respective components on the two side plates are oppositely disposed.

Due to the application of the above technical solutions, the present invention has the following advantages over the prior art:

The steering knuckle machining process of the invention directly and reversely clamps the knuckle workpiece through three sets of clamps, sequentially processes different parts of the workpiece in sequence, optimizes the machining process, and reduces the machining process in the steering knuckle. The number of tool changes and the time of the tool increase the machining efficiency.

DRAWINGS

The technical solution of the present invention is further described below with reference to the accompanying drawings:

Figure 1 is a perspective view of a knuckle workpiece according to the present invention;

Figure 2 is a perspective view of the center hole machining jig of the present invention;

Figure 3 is a perspective view of the horizontal jig of the present invention;

Figure 4 is a perspective view of the secondary compression seat of the present invention;

Figure 5 is a perspective view of the lateral clamp of the present invention;

Figure 6 is a partial cross-sectional view of the lateral clamp of the present invention;

Figure 7 is a perspective view of the set ring of the present invention.

Detailed ways

The invention will now be described with reference to the accompanying drawings.

As shown in FIGS. 1-7, a knuckle processing process according to the present invention comprises the following steps:

1 The front side of the knuckle workpiece 1 is clamped on the center hole processing jig; the inner diameter of the front side of the roughing center hole 2; the inner diameter of the reverse side of the center hole 2 of the rough finishing car; the inner diameter of the front side of the center hole 2 of the finishing car; the ring of the center hole 2 of the car groove;

2 reversely clamping the knuckle workpiece 1 on the horizontal clamp; milling the two sides of the end of the brake arm 3; drilling the end of the brake arm 3 and chamfering the front and back sides of the hole; rough milling steering Both sides of the arm 4 and the tapered surface of the end portion; the rough milling control connecting arm 5 and both sides of the shock absorbing arm 6; milling the outer end surface of the connecting arm 5; drilling the outer end surface of the control connecting arm 5, and Milling hole

3 laterally clamping the knuckle workpiece 1 on the lateral clamp; finishing milling the connecting arm 5 and the two sides of the damper arm 6; drilling and chamfering the side of the damper arm 6; Side drilling and chamfering; along the central sawing groove of the control connecting arm 5; drilling a taper hole at the end of the steering arm 4; milling the end face of the ABS connecting block 7, and drilling a bottom hole in the end face, and the bottom hole Tapping.

Wherein, in step 1, the diameter of the front side of the roughing center hole 2 is 61.3 mm; the diameter of the reverse side of the center hole 2 of the rough finishing car is 62 mm; the diameter of the front side of the center hole 2 of the finishing car is 61.8 mm; the ring groove of the center hole 2 of the vehicle The diameter is 65 mm; in step 2, the diameter of the end of the brake arm 3 is 12.2 mm, and the diameter of the bore on the outer end surface of the control link 5 is 15 mm; in step 3, the drill on the shock arm 6 The hole diameter is 12 mm, the diameter of the drill hole on the control connecting arm 5 is 10 mm, and the end face drilling standard of the ABS connecting block 7 is M8.

In step 1, as shown in FIG. 2, the center hole machining jig includes a disk base 11 and an oil passage assembly 12, and the disk base 11 is provided with a brake arm pressing seat 13, a steering arm pressing seat 14, a steering arm top block 141, a control arm top block 15, a shock absorber arm top block 16, a side top block 17, and a manifold block; the oil passage assembly 12 is engaged with the above components through a manifold block; Both the abutment 13 and the steering arm compression seat 14 are engaged with the knuckle workpiece 1 by a cylinder, a press arm and a pad structure, a steering arm top block 141, a control arm top block 15, a shock arm top block 16 and a side top block 17 All of them are hydraulic topping members; the brake arm pressing seat 13 cooperates with the brake arm 3, the steering arm pressing seat 14 and the steering arm top block 141 cooperate with the steering arm 4, and the control arm top block 15 and the control connecting arm are controlled. The front end face of the 5 is matched, the shock absorber arm top block 16 is engaged with the shock absorbing arm 6, and the side top block 17 is engaged with the front end face of the ABS connecting block 7.

Wherein, the top direction of the control arm top block 15 divides the disk base 11 into left and right sides, the brake arm pressing seat 13 and the shock absorber arm top block 16 are located on one side, and the steering arm pressing seat 14 The steering arm top block 141 and the side top block 17 are located on the other side, and the steering arm pressing seat 14 and the steering arm top block 141 are respectively disposed on both sides of the steering arm of the workpiece; A weight 18 and a plurality of weights 18 are arranged in a stacked form.

In step 2, as shown in FIGS. 3 and 4, the horizontal clamp comprises a base 21, and the base 21 is provided with a main pressing seat 22 and two sets of horizontal clamping assemblies symmetrically disposed on both sides of the main pressing seat 22. The horizontal clamping assembly comprises a positioning seat 23, a clamping seat 24 and two secondary pressing seats 25; the main pressing seat 22 is provided with a main pressing arm 26, and the main pressing arm 26 is a double-head pressing arm, and the main pressing arm The middle portion of the 26 is hinged with the telescopic rod portion of the main pressing seat 22; the clamping seat 24 is provided with a steering arm clamp 27 and a fixed head, and the steering arm clamp 27 is provided with a hydraulic head, and the clamping seat 24 is further A vertical guide groove 28 is disposed, and the base 21 is further provided with a locking pin 29 that cooperates with the guide groove 28; the main pressing seat 22 and the two secondary pressing seats 25 are respectively located at two sides of the positioning seat 23, The secondary pressing seat 25 is provided with a hydraulic push rod 251, a fixing block 252 and a Z-shaped pressing arm 253; one end of the lower portion of the Z-shaped pressing arm 253 is hinged to the hydraulic push rod 251, and the other end passes through the connecting plate 254 and the fixing block. 252 is connected, the two ends of the connecting plate 254 are respectively hinged with the fixing block 252 and the Z-shaped pressing arm 253, and the upper end of the Z-shaped pressing arm 253 is provided with a pressing block 255; the steering The main body ring on the workpiece 1 is mounted on the annular structure on the positioning seat 23, and the main pressing arm 26 cooperates with each of the auxiliary pressing seats 25 to press the annular plane on the reverse side of the main body of the knuckle workpiece 1 to fix the knuckle workpiece 1 On the positioning seat 23, and the clamping seat 24 clamps the steering arm 4 of the knuckle workpiece 1.

In the step 3, as shown in FIG. 5-7, the lateral clamp comprises a bottom plate 31. The bottom plate 31 is provided with two symmetrical side plates 32. The side plates 32 are provided with a lateral oil cylinder 33 and a brake. An arm positioning pin 34 and a plurality of blocking pins 35; the lateral cylinder 33 is provided with a lateral clamping assembly that cooperates with the steering knuckle workpiece 1, the brake arm positioning pin 34 is engaged with the brake arm 3; The clamping assembly includes a hydraulic plug 331, an oil seal 332, a set pin 333, a set ring 334, and a lateral socket 335; the hydraulic plug 331 is disposed in the lateral cylinder 33, and the oil seal 332 is disposed at a port of the lateral cylinder 33, The hydraulic plug 331 is connected to the fixing pin 333 through the oil seal 332, and is locked by the locking sleeve 336. The fixing ring 334 is provided with a socket, and the clamping ring 334 is engaged with the fixing pin 333 through the socket; the lateral socket The 335 is fixedly attached to the side frame 32, and the lateral socket 335 cooperates with the set pin 333 and the set ring 334 to clamp the knuckle workpiece 1.

Before the clamping, the lateral cylinder 33 is in the pressure releasing state, the hydraulic plug 331 is in the front position, and the tightening ring 334 is in the removed state; when clamping, the steering knuckle workpiece 1 is mounted on the lateral socket 335, and is tightly mounted. The ring 334 rotates the workpiece so that the brake arm 3 of the workpiece corresponds to the position of the brake arm positioning pin 34, the lateral cylinder 33 is oiled, and the hydraulic plug 331 acts in reverse, and the tightening pin 333 and the tightening ring 334 cooperate. The knuckle workpiece is clamped on the lateral socket 335, the workpiece has two brake arms 3, and the holes on the two brake arms 3 are concentrically arranged along the central axis of the workpiece, so that the brake arm positioning pin 34 can be The two brake arms 3 of the workpiece are respectively matched, so that the workpiece can be positioned in two positions, which facilitates multi-faceted multi-directional machining on the workpiece.

The above embodiments are only intended to illustrate the technical concept and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and not to limit the scope of the present invention. Equivalent changes or modifications made in substantial form are intended to be included within the scope of the invention.

Claims

A steering knuckle machining process is characterized in that it comprises the following steps:

1 The front part of the knuckle workpiece (1) is clamped on the center hole machining jig; the inner diameter of the front side of the rough center hole (2); the inner diameter of the reverse center of the rough center hole (2); the front side of the fine car center hole (2) Inner diameter; ring groove of the center hole of the car (2);

2 Reversely clamp the knuckle workpiece (1) on the horizontal clamp; mill the two sides of the end of the brake arm (3); drill the end of the brake arm (3), and in the front and back of the hole Face chamfering; roughing the two sides of the steering arm (4) and the tapered surface of the end; roughing the control arm (5) and the two sides of the shock arm (6); milling the outer end of the connecting arm (5) Drilling and milling the outer end face of the control connecting arm (5);

3 Align the knuckle workpiece (1) laterally on the side clamp; finish milling the control arm (5) and the two sides of the damper arm (6); drill and pour the side of the damper arm (6) Angle; drilled and chamfered on the side of the control link (5); along the central sawing groove of the control link (5); drilled taper hole at the end of the steering arm (4); milled ABS connection block (7) The end face, and the bottom hole is drilled in the end face, and the bottom hole is tapped.
The knuckle processing according to claim 1, wherein in the step 1, the diameter of the front surface of the roughing center hole (2) is 61.3 mm; the diameter of the reverse side of the center hole of the roughing vehicle (2) is 62 mm; The diameter of the front of the center hole of the finishing car (2) is 61.8mm; the diameter of the ring of the center hole of the car (2) is 65mm; in the second step, the diameter of the end of the brake arm (3) is 12.2mm, control The diameter of the drill hole on the outer end surface of the connecting arm (5) is 15 mm; in the step 3, the diameter of the drilling hole on the shock absorbing arm (6) is 12 mm, and the diameter of the drilling hole on the control connecting arm (5) is 10 mm. The end face drilling standard of the ABS connecting block (7) is M8.
The steering knuckle machining process according to claim 1, wherein the center hole machining jig comprises a disk base (11) and an oil passage assembly (12), and the disk base (11) is provided with a brake arm pressure Tight seat (13), steering arm compression seat (14), steering arm top block (141), control arm top block (15), shock arm top block (16), side top block (17) and manifold block The oil passage assembly (12) is engaged with the above components through a manifold block; the brake arm pressing seat (13) and the steering arm pressing seat (14) are both configured by a cylinder, a press arm and a spacer structure. The steering knuckle workpiece (1) cooperates, the steering arm top block (141), the control arm top block (15), the shock arm top block (16) and the side top block (17) are hydraulic top members; the brake The arm pressing seat (13) cooperates with the brake arm (3), the steering arm pressing seat (14) and the steering arm top block (141) cooperate with the steering arm (4), and the control arm top block (15) is connected with the control. The arm (5) cooperates, the shock absorber arm top block (16) cooperates with the shock absorber arm (6), and the side top block (17) cooperates with the ABS connection block (7).
The steering knuckle machining process according to claim 3, characterized in that the steering arm pressing seat (14) and the steering arm top block (141) are respectively disposed on both sides of the steering arm (4); the control arm a top block (15) mates with a front end surface of the control link arm (5); the shock absorber arm top block (16) is mated with a side of the shock arm (6) adjacent to the brake arm (3); The block (17) is mated with the front end of the ABS connecting block (7).
The steering knuckle machining process according to claim 3, characterized in that: the disc base (11) is further provided with a plurality of weights (18), and the plurality of weights (18) are arranged in a stack .
The steering knuckle machining process according to claim 1, wherein the horizontal clamp comprises a base (21), and the base (21) is provided with a main pressing seat (22) and at least one set of horizontal clamping components, horizontal The clamping assembly comprises a positioning seat (23), a clamping seat (24) and two secondary pressing seats (25); the main pressing seat (22) is provided with a main pressing arm (26), a clamping seat ( 24) provided with a steering arm clamp (27) and a fixed plug, the steering arm clamp (27) is provided with a hydraulic head; the main pressing seat (22) and the two secondary pressing seats (25) are respectively located On both sides of the positioning seat (23), the secondary pressing seat (25) is provided with a hydraulic push rod (251), a fixed block (252) and a Z-shaped pressing arm (253); the Z-shaped pressing arm (253) The lower end is hinged to the hydraulic push rod (251), and the other end is connected to the fixed block (252) through the connecting plate (254). The two ends of the connecting plate (254) are respectively fixed with the fixing block (252) and the Z-shaped pressing arm (253). The hinge is provided with a pressing block (255) at the upper end of the Z-shaped pressing arm (253).
The steering knuckle machining process according to claim 6, wherein the horizontal clamping assembly has two groups, and the two sets of horizontal clamping assemblies are symmetrically disposed on both sides of the main pressing seat (22), and the main pressing seat (22) The upper pressing arm (26) is a double-head pressing arm, and the middle portion of the main pressing arm (26) is hinged with the telescopic rod portion of the main pressing seat (22), and the two ends of the main pressing arm (26) are respectively Two sets of horizontal clamping assemblies cooperate to clamp the workpiece.
The steering knuckle machining process according to claim 6, wherein the clamping seat (24) is provided with a vertical guiding groove (28), and the base (21) is further provided with a guiding groove (28). Fitted locking pin (29).
The steering knuckle machining process according to claim 1, wherein the lateral clamp comprises a bottom plate (31), and the bottom plate (31) is provided with at least one side plate frame (32) on the side plate frame (32). A lateral cylinder (33), a brake arm positioning pin (34) and a plurality of stop pins (35) are provided; the lateral cylinder (33) is provided with a lateral clamping that cooperates with the knuckle workpiece (1) The assembly, the brake arm positioning pin (34) cooperates with the brake arm (3); the lateral clamping assembly comprises a hydraulic plug (331), an oil seal (332), a set pin (333), a set ring (334) And a lateral socket (335); the hydraulic plug (331) is disposed in the lateral cylinder (33), the oil seal (332) is disposed at the port of the lateral cylinder (33), and the hydraulic plug (331) passes through the oil seal ( 332) is connected to the pin (333) and locked by the locking sleeve (336), the adapter ring (334) is provided with a socket, and the clamping ring (334) is engaged with the fixing pin (333) through the socket; The lateral socket (335) is fixedly coupled to the side frame (32), and the lateral socket (335) cooperates with the set pin (333) and the set ring (334) to clamp the knuckle workpiece (1).
The steering knuckle machining process according to claim 9, characterized in that: the bottom plate (31) is provided with two symmetrical side plates (32), and the respective components on the two side plates (32) are oppositely arranged. .