Steering knuckle fork ear inner and outer side initial milling fixing tool

Abstract

The utility model discloses a kind of steering knuckle fork ear inner and outer side initial milling fixed tool, it includes machine base, first positioning mechanism, bearing mechanism and pressure mechanism, the first positioning mechanism includes positioning pedestal and positioning pin, the positioning pedestal has a positioning channel with both ends open. The utility model has the beneficial effect that: one end of positioning channel is in a state of suspension, then the disc body of steering knuckle is in a state of suspension, can avoid the fourth side edge of machine base and disc body to produce interference, the mutual cooperation of first positioning mechanism, bearing mechanism and pressure mechanism, can position steering knuckle, ensure that the side of the two ends of first kingpin hole and the side of the two ends of second kingpin hole are in vertical state, avoid the inner section of conventional pressure structure pressure neck to be easily interfered with the third side edge of disc body of steering knuckle, the outer section of pressure neck is easily caused to be not pressed stably, improve fixed effect, solve the problem of machining vibration simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of steering knuckle machining technology, and in particular to a pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lug. Background Technology

[0002] Integrated brake baseplate steering knuckles are widely used in various vehicle types, especially in new energy vehicles. As the industry's requirements for lightweighting and safety continue to increase, the application of this component is becoming increasingly widespread. Its integrated design meets the demands of new energy vehicles for high efficiency and high safety, representing a significant trend in automotive component development. Existing integrated brake baseplate steering knuckles, such as... Figure 1 As shown in Figure 2, the steering knuckle 100 includes a disc body 110, a first fork lug 120, a second fork lug 130, and a journal 140. The disc body 110 has a front side 111 and a back side 112. The disc body 110 also has opposing first side 113 and second side 114, and opposing third side 115 and fourth side 116. The disc body 110 has mounting holes 117 that penetrate the front side 111 and back side 112. The first fork lug 120 is disposed on the front side 111 of the disc body 110 and close to the first side 113 of the disc body 110. The first fork lug 120 is fixedly connected to the front side 111 of the disc body 110. The first fork lug 120 has a first kingpin hole 121. The second fork lug 130 is disposed on the front side 111 of the disc body 110. The front side 111 of the disc body 110 and the second side 114 of the disc body 110 are fixedly connected to the front side 111 of the disc body 110. The second fork lug 130 is provided with a second master pin hole 131, which is coaxial with the first master pin hole 121. The journal 140 is disposed on the back side 112 of the disc body 110, and one end of the journal 140 is fixedly connected to the back side 112 of the disc body 110. The journal 140 has an inner section 141, a middle section 142 and an outer section 143 connected in sequence. The inner section 141 is close to the disc body 110, and the outer section 143 is away from the disc body 110. The diameter of the inner section 141 is larger than the diameter of the outer section 143, and the diameter of the outer section 143 is larger than the diameter of the middle section 142.

[0003] During the machining of the above-mentioned integrated brake base plate steering knuckle, one of the processes is to perform initial milling on the sides where the first kingpin hole of the first fork lug is located and the sides where the second kingpin hole of the second fork lug is located. Fixed fixtures are required to position the steering knuckle. During the initial milling of the sides where the first and second kingpin holes are located, it is necessary to ensure that the sides where the first and second kingpin holes are located are vertical. Since the third and fourth sides of the steering knuckle disc are bent towards the back of the disc and extend to the middle of the journal, when the sides where the first and second kingpin holes are located are vertical, the third and fourth sides of the disc will be in an up-down position. When using a conventional fixture to position the integrated brake base plate steering knuckle, the inner section of the journal clamping mechanism is prone to interference with the third side of the steering knuckle disc, and the outer section of the journal clamping mechanism is prone to unstable clamping. In addition, the base is prone to interference with the fourth side of the steering knuckle disc, resulting in positioning failure. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs. This solves the technical problem that conventional fixing fixtures are not suitable for positioning the steering knuckle of the integrated brake base plate when performing pre-milling on the sides where the first and second kingpin holes are located, because the third and fourth sides of the steering knuckle disc are bent toward the back of the disc.

[0005] To achieve the above technical objectives, the present invention provides a pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lug, comprising: Base; The first positioning mechanism includes a positioning platform and a positioning pin. The positioning platform has a positioning channel with openings at both ends. The positioning platform is fixedly connected to the base so that one end of the positioning channel is suspended. The positioning channel is used to place a journal to limit the radial movement of the journal in the horizontal plane. One end of the positioning pin is fixedly connected to the positioning platform, and the other end of the positioning pin is used to slide through the mounting hole of the disc body to limit the rotation of the journal about its own axis. The support mechanism is used to support the bottom of the fourth side of the disc and the first fork lug; A clamping mechanism used to clamp or loosen the middle section of the journal.

[0006] Furthermore, the positioning platform includes a base, two pads, and a support block. The base has a first positioning groove with a V-shaped structure and open ends. The base is fixedly connected to the machine base so that one end of the first positioning groove is suspended. The outer section of the journal is placed in the first positioning groove. The two pads are detachably fixed to the two groove walls of the first positioning groove and are used to abut against the outer section of the journal. The support block has a second positioning groove with a semi-circular structure and open ends. The support block is detachably fixedly connected to one end of the base so that the second positioning groove communicates with the first positioning groove and forms the positioning channel. The inner section of the journal is placed in the second positioning groove.

[0007] Furthermore, the supporting mechanism includes a first supporting member and a second supporting member, wherein the first supporting member is used to support the bottom of the fourth side of the disc body, and the second supporting member is used to support the first fork lug.

[0008] Furthermore, the first support member is a first support shaft, the top of which is used to support the bottom of the fourth side of the disc body.

[0009] Furthermore, the second support member is a second support shaft, the top of which is used to support the first fork lug.

[0010] Furthermore, the clamping mechanism includes a lever arm, two clamping blocks, and a telescopic drive. The middle part of the lever arm is hinged to the base. The two clamping blocks are radially spaced along the positioning channel and are fixedly connected to one end of the lever arm. The output end of the telescopic drive is hinged to the other end of the lever arm and is used to drive the lever arm to rotate in a vertical plane around its central rotation axis, so that the clamping blocks near the disc body clamp or loosen the middle section of the journal.

[0011] Furthermore, the clamping mechanism also includes a clamping pad, which is a columnar structure and is placed in the positioning channel away from the journal. During the rotation of the lever arm around the central axis in the vertical plane, the clamping block away from the disc is used to clamp or loosen the clamping pad.

[0012] Furthermore, the pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs also includes a second positioning mechanism. The second positioning mechanism is located on the side of the bearing mechanism away from the positioning platform and is used to abut or separate from the front of the disc body. When the second positioning mechanism abuts with the front of the disc body, the side where one end of the positioning channel is located abuts with the back of the disc body to jointly limit the axial movement of the journal in the horizontal plane.

[0013] Furthermore, the second positioning mechanism includes multiple guide rods, abutment blocks, and a driving assembly. Each guide rod is vertically arranged, and the abutment block is slidably sleeved on each guide rod. The driving assembly is connected to the lower end of the abutment block and is used to drive the abutment block to move up and down so that the upper end of the abutment block abuts or separates from the front of the disc.

[0014] Furthermore, the driving assembly includes a fixed block, a movable block, a sliding shaft, and a screw. The fixed block has a screw hole that extends horizontally along the radial direction of the positioning channel. The movable block has a sliding groove that is arranged obliquely along the radial direction of the positioning channel. The sliding shaft is arranged horizontally along the axial direction of the positioning channel and slides through the sliding groove. Both ends of the sliding shaft are fixedly connected to the bottom of the abutment block. The screw is arranged horizontally along the radial direction of the positioning channel and is screwed to the screw hole. One end of the screw is rotatably connected to the movable block, which drives the movable block to reciprocate horizontally along the radial direction of the positioning channel, so that the abutment block moves up and down.

[0015] Compared with the prior art, the beneficial effects of this utility model include: During use, the journal of the steering knuckle is placed in the positioning channel, which limits the radial movement of the journal in the horizontal plane. Simultaneously, the mounting hole of the disc body is slidably fitted onto the positioning pin, which limits the rotation of the journal around its own axis. The bearing mechanism supports the bottom of the fourth side of the disc body and the first fork lug, while the clamping mechanism clamps the middle section of the journal. Since one end of the positioning channel is suspended, the disc body of the steering knuckle is also suspended, preventing interference between the base and the fourth side of the disc body. The coordinated action of the first positioning mechanism, the bearing mechanism, and the clamping mechanism positions the steering knuckle, ensuring that the sides where the two ends of the first and second master pin holes are located are vertical. This avoids the interference that occurs when clamping the inner section of the journal with the third side of the steering knuckle disc body using conventional clamping structures, and prevents unstable clamping when clamping the outer section of the journal. This improves the fixing effect and solves the problem of vibration during processing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an existing integrated brake base plate steering knuckle; Figure 2 This is a three-dimensional structural diagram of the existing integrated brake base plate steering knuckle from another perspective; Figure 3 This is a three-dimensional structural diagram of a pre-milling fixing fixture for the inner and outer sides of a steering knuckle fork lug provided by this utility model; Figure 4 This is a three-dimensional structural diagram of the first positioning mechanism provided by this utility model; Figure 5This is a three-dimensional structural diagram of the second positioning mechanism provided by this utility model; In the diagram: 100 - Steering knuckle, 110 - Disc, 111 - Front, 112 - Back, 113 - First side, 114 - Second side, 115 - Third side, 116 - Fourth side, 117 - Mounting hole, 120 - First fork lug, 121 - First kingpin hole, 130 - Second fork lug, 131 - Second kingpin hole, 140 - Journal, 141 - Inner section, 142 - Middle section, 143 - Outer section, 200 - Base, 300 - First positioning mechanism, 310 - Positioning platform, 311 - Positioning channel, 312 - Base, 3121 - First positioning groove, 31 3 - Pad, 314 - Support block, 3141 - Second positioning groove, 320 - Positioning pin, 400 - Bearing mechanism, 410 - First bearing component, 420 - Second bearing component, 500 - Pressing mechanism, 510 - Lever arm, 520 - Pressing block, 521 - Pressing groove, 530 - Telescopic drive component, 540 - Pressing pad, 600 - Second positioning mechanism, 610 - Guide rod, 620 - Abutment block, 621 - Guide groove, 630 - Drive assembly, 631 - Fixed block, 632 - Moving block, 6321 - Slide groove, 633 - Sliding shaft, 634 - Screw, 700 - Platform. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] This utility model provides a pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs, the structure of which is as follows: Figure 3 - Figure 5 As shown, the device includes a base 200, a first positioning mechanism 300, a bearing mechanism 400, and a clamping mechanism 500. The first positioning mechanism 300 includes a positioning platform 310 and a positioning pin 320. The positioning platform 310 has a positioning channel 311 open at both ends. The positioning platform 310 is fixedly connected to the base 200 so that one end of the positioning channel 311 is suspended. The positioning channel 311 is used to place the journal 140 to position the journal 140. The radial movement within the horizontal plane is limited. One end of the positioning pin 320 is fixedly connected to the positioning base 310, and the other end of the positioning pin 320 is used to slide through the mounting hole 117 of the disc body 110 to limit the rotation of the journal 140 around its own axis. The bearing mechanism 400 is used to support the bottom of the fourth side 116 of the disc body 110 and the first fork lug 120. The clamping mechanism 500 is used to clamp or loosen the middle section 142 of the journal 140.

[0019] In use, the journal 140 of the steering knuckle 100 is placed in the positioning channel 311, which limits the radial movement of the journal 140 in the horizontal plane. Simultaneously, the mounting hole 117 of the disc body 110 is slidably fitted onto the positioning pin 320, which limits the rotation of the journal 140 around its own axis. The bearing mechanism 400 supports the bottom of the fourth side 116 of the disc body 110 and the first fork lug 120, while the clamping mechanism 500 clamps the middle section 142 of the journal 140. Since one end of the positioning channel 311 is suspended, the steering knuckle 100... The disc body 110 is suspended, which can avoid interference between the base 200 and the fourth side 116 of the disc body 110. The cooperation of the first positioning mechanism 300, the bearing mechanism 400 and the clamping mechanism 500 can position the steering knuckle 100, ensuring that the two ends of the first master pin hole 121 and the two ends of the second master pin hole 131 are in a vertical state. This avoids interference between the inner section 141 of the journal 140 and the third side 115 of the disc body 110 of the steering knuckle 100 when using a conventional clamping structure, and prevents unstable clamping when clamping the outer section 143 of the journal 140. This improves the fixing effect and solves the problem of vibration during processing.

[0020] As a preferred embodiment, please refer to Figure 3 As shown in Figure 4, the positioning platform 310 includes a base 312, two pads 313, and a support block 314. The base 312 has a first positioning groove 3121 with a V-shaped structure and open ends. The base 312 is fixedly connected to the machine base 200 so that one end of the first positioning groove 3121 is suspended. The first positioning groove 3121 is used to place the outer section 143 of the journal 140. The two pads 313 are detachably fixed to the two groove walls of the first positioning groove 3121 and are used to abut against the outer section 143 of the journal 140. The support block 314 has a second positioning groove 3141 with a semi-circular structure and open ends. One end of the 314 is detachably fixed to the seat 312 so that the second positioning groove 3141 communicates with the first positioning groove 3121 and forms the positioning channel 311. The inner section 141 of the journal 140 is placed in the second positioning groove 3141. The outer section 143 of the journal 140 is supported and limited by the two pads 313 abutting against the outer section 143 of the journal 140. The inner section 141 of the journal 140 is supported and limited by the groove wall of the second positioning groove 3141 abutting against the inner section 141 of the journal 140. The middle section 142 of the journal 140 is pressed by the pressing mechanism 500 to ensure the balance of support force and pressure.

[0021] In a preferred embodiment, the diameter of the second positioning groove 3141 is equal to the diameter of the inner section 141 of the journal 140, so that the inner section 141 of the journal 140 can be supported and positioned by the second positioning groove 3141.

[0022] As a preferred embodiment, please refer to Figure 3 The supporting mechanism 400 includes a first supporting member 410 and a second supporting member 420. The first supporting member 410 is used to support the bottom of the fourth side 116 of the disc body 110, and the second supporting member 420 is used to support the first fork lug 120, which can improve the support effect on the steering knuckle 100.

[0023] As a preferred embodiment, please refer to Figure 3 The first support member 410 is a first support shaft. The top of the first support shaft is used to support the bottom of the fourth side 116 of the disc body 110 to provide support for the disc body 110.

[0024] As a preferred embodiment, please refer to Figure 3 The second support member 420 is a second support shaft, and the top of the second support shaft is used to support the first fork lug 120 to provide support for the first fork lug 120.

[0025] As a preferred embodiment, please refer to Figure 3 The clamping mechanism 500 includes a lever arm 510, two clamping blocks 520, and a telescopic drive 530. The middle part of the lever arm 510 is hinged to the base 200. The two clamping blocks 520 are radially spaced along the positioning channel 311 and are fixedly connected to one end of the lever arm 510. The output end of the telescopic drive 530 is hinged to the other end of the lever arm 510 and is used to drive the lever arm 510 to rotate in a vertical plane around its central axis of rotation, so that the clamping blocks 520 near the disc 110 press or release the middle section 142 of the journal 140. When the telescopic drive 530 is activated, it can drive the lever arm 510 to rotate in a vertical plane around its central axis of rotation, so that the clamping blocks 520 near the disc 110 press or release the middle section 142 of the journal 140, thereby achieving the pressing or releasing of the journal 140.

[0026] As a preferred embodiment, please refer to Figure 3The clamping mechanism 500 further includes a clamping pad 540, which is a columnar structure and is placed in the positioning channel 311 away from the journal 140. During the rotation of the lever arm 510 around its central axis in the vertical plane, the clamping block 520 away from the disc 110 is used to clamp or release the clamping pad 540. When the clamping block 520 close to the disc 110 clamps the middle section 142 of the journal 140, the clamping block 520 away from the disc 110 clamps the clamping pad 540, which can keep the clamping block 520 close to the disc 110 balanced.

[0027] As a preferred embodiment, please refer to Figure 3 The clamping block 520 has a V-shaped clamping groove 521 with openings at both ends. The clamping groove 521 near the disc 110 is used to engage with the middle section 142 of the journal 140, and the clamping block 520 away from the disc 110 is used to engage with the clamping pad 540. When clamping the middle section 142 of the journal 140, the radial movement of the journal 140 in the horizontal plane can also be limited. When clamping the clamping block 520, the radial movement of the clamping block 520 in the horizontal plane can also be limited.

[0028] In a preferred embodiment, the telescopic drive component 530 is a hydraulic cylinder.

[0029] As a preferred embodiment, please refer to Figure 3 As shown in Figure 5, the pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs also includes a second positioning mechanism 600. The second positioning mechanism 600 is disposed on the side of the bearing mechanism 400 away from the positioning platform 310 and is used to abut or separate from the front 111 of the disc body 110. When the second positioning mechanism 600 abuts with the front 111 of the disc body 110, the side where one end of the positioning channel 311 is located abuts with the back 112 of the disc body 110 to jointly limit the axial movement of the journal 140 in the horizontal plane. This can prevent the journal 140 from moving along its own axial direction in the horizontal plane and further improve the fixing effect of the steering knuckle 100.

[0030] As a preferred embodiment, please refer to Figure 3 and Figure 5The second positioning mechanism 600 includes multiple guide rods 610, abutment blocks 620, and a drive assembly 630. Each guide rod 610 is vertically arranged. The abutment blocks 620 are slidably sleeved on each guide rod 610. The drive assembly 630 is connected to the lower end of the abutment blocks 620 and drives the abutment blocks 620 to move up and down, so that the upper end of the abutment blocks 620 abuts against or separates from the front surface 111 of the disc body 110. When the outer section 143 of the journal 140 is placed in the first positioning groove 3121, and the inner section 141 of the journal 140 is placed in the second positioning groove 3141, and the top of the first bearing shaft supports the bottom of the fourth side 116 of the disc body 110, the top of the second bearing shaft supports... With the first fork lug 120, the clamping block 520 near the disc body 110 clamps the middle section 142 of the journal 140, and the clamping block 520 away from the disc body 110 clamps the clamping pad 540. After the driving component 630 is operated, the driving component 630 can drive the abutment block 620 to move upward, so that the upper end of the abutment block 620 abuts against the front 111 of the disc body 110. Since when the second positioning mechanism 600 abuts against the front 111 of the disc body 110, the side where one end of the positioning channel 311 is located abuts against the back 112 of the disc body 110, so as to jointly limit the axial movement of the journal 140 in the horizontal plane, the journal 140 can be prevented from moving along its own axial direction in the horizontal plane.

[0031] As a preferred embodiment, please refer to Figure 5The driving assembly 630 includes a fixed block 631, a moving block 632, a sliding shaft 633, and a screw 634. The fixed block 631 has a screw hole extending horizontally radially along the positioning channel 311. The moving block 632 has a sliding groove 6321 arranged radially inclined along the positioning channel 311. The sliding shaft 633 is arranged horizontally axially along the positioning channel 311 and slides through the sliding groove 6321. Both ends of the sliding shaft 633 are fixedly connected to the bottom of the abutment block 620. The screw 634 is arranged horizontally radially along the positioning channel 311 and screwed into the screw hole. One end of the screw 634 is connected to the moving block 632. The movable block 632 is rotatably connected and is used to drive the movable block 632 to move horizontally and reciprocally along the radial direction of the positioning channel 311, so that the abutment block 620 moves up and down. The screw 634 is rotated. Since the screw 634 is screwed to the screw hole, when the screw 634 rotates, it can drive the movable block 632 to move horizontally and reciprocally along the radial direction of the positioning channel 311. Since the sliding groove 6321 is arranged radially and inclined along the positioning channel 311, and the sliding shaft 633 is restricted by the sliding groove 6321 and the abutment block 620, the horizontal reciprocating movement of the movable block 632 along the radial direction of the positioning channel 311 can be converted into the up and down movement of the abutment block 620.

[0032] As a preferred embodiment, please refer to Figure 5 A guide groove 621 is provided on the abutment block 620, and the moving block 632 slides through the guide groove 621. The movement of the moving block 632 can be guided by the guide groove 621.

[0033] As a preferred embodiment, please refer to Figure 1 The aforementioned pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs also includes a platform 700. The bottom of the base 200 is fixedly connected to the platform 700. The bottoms of the first bearing shaft and the second bearing shaft are both fixedly connected to the platform 700. The bottoms of each guide rod 610 are fixedly connected to the platform 700. The bottom of the fixing block 631 is fixedly connected to the platform 700. The bottom of the moving block 632 is slidably connected to the platform 700.

[0034] To better understand this utility model, the following is combined with... Figure 1 - Figure 5 The working principle of the technical solution of this utility model will be described in detail below: In use, the outer section 143 of the journal 140 is placed in the first positioning groove 3121, which supports and positions the outer section 143 of the journal 140. The inner section 141 of the journal 140 is placed in the second positioning groove 3141, which supports and positions the inner section 141 of the journal 140. That is, the radial movement of the journal 140 in the horizontal plane is limited by the positioning channel 311. Simultaneously, the mounting hole 117 of the disc body 110 is slidably fitted onto the positioning pin 320, which limits the rotation of the journal 140 around its own axis. Then, the first bearing shaft... The bottom of the fourth side 116 of the top bearing plate 110 is supported by the first fork lug 120 via the top of the second bearing shaft. Then the telescopic drive 530 is activated, which can drive the lever arm 510 to rotate in the vertical plane around the central rotation axis. This can cause the clamping block 520 near the plate 110 to press or release the middle section 142 of the journal 140, and can also cause the clamping block 520 away from the plate 110 to press the clamping pad 540. Then the screw 634 is rotated. Since the screw 634 is screwed to the screw hole, when the screw 634 rotates, it can drive the moving block 632 to move horizontally along the radial direction of the positioning channel 311. Since the sliding groove 6321 moves along the positioning channel 311, the sliding block 6321 moves horizontally along the radial direction of the positioning channel 311. The radially inclined arrangement of 11, and the restriction of the sliding shaft 633 by the sliding groove 6321 and the abutment block 620, can convert the radial horizontal movement of the moving block 632 along the positioning channel 311 into the upward movement of the abutment block 620, so that the upper end of the abutment block 620 abuts against the front 111 of the disc body 110. Since when the second positioning mechanism 600 abuts against the front 111 of the disc body 110, the side of one end of the positioning channel 311 abuts against the back 112 of the disc body 110, so as to jointly limit the axial movement of the journal 140 in the horizontal plane, it can prevent the journal 140 from moving along its own axial direction in the horizontal plane. When one end of the steering knuckle 100 is suspended, the disc 110 of the steering knuckle 100 is also suspended, which can prevent interference between the base 200 and the fourth side 116 of the disc 110. The cooperation of the first positioning mechanism 300, the bearing mechanism 400 and the clamping mechanism 500 can position the steering knuckle 100, ensuring that the sides where the two ends of the first master pin hole 121 and the two ends of the second master pin hole 131 are located are vertical. This avoids interference between the inner section 141 of the journal 140 and the third side 115 of the disc 110 of the steering knuckle 100 when using a conventional clamping structure to clamp the outer section 143 of the journal 140, which is prone to clamping instability. This improves the fixing effect and solves the problem of vibration during processing.

[0035] The pre-milling and fixing fixture for the inner and outer sides of the steering knuckle fork lug provided by this utility model has the following beneficial effects: (1) The outer section 143 of the journal 140 is supported and limited by the two pads 313 abutting against the outer section 143 of the journal 140. The inner section 141 of the journal 140 is supported and limited by the groove wall of the second positioning groove 3141 abutting against the inner section 141 of the journal 140. The middle section 142 of the journal 140 is pressed by the pressing mechanism 500 to ensure the balance of support force and pressure. When the pressing block 520 close to the disc 110 presses the middle section 142 of the journal 140, the pressing block 520 away from the disc 110 presses the pressing pad 540, so that the pressing block 520 close to the disc 110 can be kept in balance. (2) When the second positioning mechanism 600 abuts against the front 111 of the disc body 110, the side of the positioning channel 311 is used to abut against the back 112 of the disc body 110 to jointly limit the axial movement of the journal 140 in the horizontal plane, which can prevent the journal 140 from moving along its own axis in the horizontal plane and further improve the fixing effect of the steering knuckle 100. (3) When one end of the positioning channel 311 is suspended, the disc 110 of the steering knuckle 100 is suspended, which can avoid interference between the base 200 and the fourth side 116 of the disc 110. The cooperation of the first positioning mechanism 300, the bearing mechanism 400 and the clamping mechanism 500 can position the steering knuckle 100, ensuring that the two sides of the first master pin hole 121 and the two sides of the second master pin hole 131 are vertical. This avoids interference between the inner section 141 of the journal 140 and the third side 115 of the disc 110 of the steering knuckle 100 when the conventional clamping structure is used, and prevents the outer section 143 of the journal 140 from being clamped, thus improving the fixing effect and solving the problem of vibration during processing.

[0036] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A tooling for initial milling and fixing the inner and outer sides of a steering knuckle fork lug, characterized in that, include: Base; The first positioning mechanism includes a positioning platform and a positioning pin. The positioning platform has a positioning channel with openings at both ends. The positioning platform is fixedly connected to the base so that one end of the positioning channel is suspended. The positioning channel is used to place a journal to limit the radial movement of the journal in the horizontal plane. One end of the positioning pin is fixedly connected to the positioning platform, and the other end of the positioning pin is used to slide through the mounting hole of the disc body to limit the rotation of the journal about its own axis. The support mechanism is used to support the bottom of the fourth side of the disc and the first fork lug; A clamping mechanism used to clamp or loosen the middle section of the journal.

2. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 1, characterized in that, The positioning platform includes a base, two pads, and a support block. The base has a first positioning groove with a V-shaped structure and open ends. The base is fixedly connected to the machine base so that one end of the first positioning groove is suspended. The outer section of the journal is placed in the first positioning groove. The two pads are detachably fixed to the two groove walls of the first positioning groove and are used to abut against the outer section of the journal. The support block has a second positioning groove with a semi-circular structure and open ends. The support block is detachably fixedly connected to one end of the base so that the second positioning groove communicates with the first positioning groove and forms the positioning channel. The inner section of the journal is placed in the second positioning groove.

3. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 1, characterized in that, The supporting mechanism includes a first supporting member and a second supporting member. The first supporting member is used to support the bottom of the fourth side of the disc body, and the second supporting member is used to support the first fork lug.

4. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 3, characterized in that, The first support member is a first support shaft, and the top of the first support shaft is used to support the bottom of the fourth side of the disc body.

5. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 3, characterized in that, The second support member is a second support shaft, and the top of the second support shaft is used to support the first fork lug.

6. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 1, characterized in that, The clamping mechanism includes a lever arm, two clamping blocks, and a telescopic drive. The middle part of the lever arm is hinged to the base. The two clamping blocks are radially spaced along the positioning channel and are fixedly connected to one end of the lever arm. The output end of the telescopic drive is hinged to the other end of the lever arm and is used to drive the lever arm to rotate in a vertical plane around its central axis, so that the clamping blocks near the disc press or release the middle section of the journal.

7. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 6, characterized in that, The clamping mechanism also includes a clamping pad, which is a columnar structure and is placed in the positioning channel away from the journal. During the rotation of the lever arm around the central axis in the vertical plane, the clamping block away from the disc is used to clamp or loosen the clamping pad.

8. The initial milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 1, characterized in that, It also includes a second positioning mechanism, which is located on the side of the bearing mechanism away from the positioning platform and is used to abut or separate from the front of the disc. When the second positioning mechanism abuts the front of the disc, the side where one end of the positioning channel is located abuts the back of the disc to jointly limit the axial movement of the journal in the horizontal plane.

9. The initial milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 8, characterized in that, The second positioning mechanism includes multiple guide rods, abutment blocks, and a drive assembly. Each guide rod is vertically arranged, and the abutment block is slidably sleeved on each guide rod. The drive assembly is connected to the lower end of the abutment block and is used to drive the abutment block to move up and down so that the upper end of the abutment block abuts or separates from the front of the disc.

10. The pre-milling fixing fixture for the inner and outer sides of the steering knuckle fork lugs according to claim 9, characterized in that, The driving assembly includes a fixed block, a movable block, a sliding shaft, and a screw. The fixed block has a screw hole that extends horizontally along the radial direction of the positioning channel. The movable block has a sliding groove that is arranged obliquely along the radial direction of the positioning channel. The sliding shaft is arranged horizontally along the axial direction of the positioning channel and slides through the sliding groove. Both ends of the sliding shaft are fixedly connected to the bottom of the abutment block. The screw is arranged horizontally along the radial direction of the positioning channel and is screwed to the screw hole. One end of the screw is rotatably connected to the movable block, which drives the movable block to reciprocate horizontally along the radial direction of the positioning channel, so that the abutment block moves up and down.

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