A floating positioning clamp for turning knuckle taper hole pull key groove

Abstract

The utility model discloses a kind of knuckle taper hole pull and insert key groove floating positioning fixture, it includes positioning pedestal, positioning mechanism, first abutting mechanism and pressing mechanism, the positioning pedestal has the load-bearing surface of horizontal arrangement and the abutting surface of vertical arrangement;The positioning mechanism includes positioning shaft and first telescopic drive, the upper end of the positioning shaft is conical structure, and is used for sliding insertion into the first taper hole or second taper hole of knuckle, the output end of the first telescopic drive is connected with the lower end of the positioning shaft, for driving the positioning shaft moves up and down, to make knuckle be set on the load-bearing surface.The beneficial effects of the utility model are: the position of taper hole is positioned using the conical structure of positioning shaft, the angle of key groove and shaft diameter is positioned using the abutting surface of positioning pedestal, ensure the position degree of key groove relative to taper hole, and when pulling and inserting key groove, positioning shaft can be removed from taper hole, avoid pulling and inserting key groove cutter.

Description

Technical Field

[0001] This utility model relates to the field of steering knuckle technology, and in particular to a steering knuckle tapered hole pull-insertion keyway floating positioning fixture. Background Technology

[0002] The steering knuckle is a crucial component of the automotive steering axle, enabling stable vehicle movement and sensitive directional transmission. Its function is to transmit and bear the load from the front of the vehicle, supporting and driving the front wheels to rotate around the kingpin, thus steering the vehicle. While the vehicle is in motion, it withstands varying impact loads.

[0003] Existing steering knuckles, such as Figure 1 As shown, the steering knuckle 100 includes a disc body 110, a journal 120, a first fork lug 130, and a second fork lug 140. The disc body 110 has multiple disc holes 111, each extending axially along the disc body 110. The journal 120 is located on one side of the disc body 110 and extends axially along the disc body 110, with one end fixedly connected to one side wall of the disc body 110. The first fork lug 130 and the second fork lug 140 are both located on the other side of the disc body 110 and are respectively arranged on both sides of the journal 120. One end of each of the first fork lug 130 and the second fork lug 140 is fixedly connected to the other side wall of the disc body 110. The first fork lug 130 is located close to the disc body 110. A first master pin hole 131 is provided on one end of the 10. A second master pin hole 141 is provided on the end of the second fork lug 140 near the disc body 110. The second master pin hole 141 is coaxially arranged with the first master pin hole 131. A first tapered hole 132 is provided on the end of the first fork lug 130 away from the disc body 110. The first tapered hole 132 is perpendicular to the first master pin hole 131. A first keyway 1321 extending axially is provided on the inner wall of the first tapered hole 132. A second tapered hole 142 is provided on the end of the second fork lug 140 away from the disc body 110. The second tapered hole 142 is perpendicular to the second master pin hole 141. A second keyway 1421 extending axially is provided on the inner wall of the second tapered hole 142. The tapered hole of the steering knuckle with the above structure is used to connect with the steering knuckle arm. After the tapered hole is machined, a keyway is cut out on the conical surface using a broaching cutter or a gear shaping cutter, and the keyway is made at a specific angle with the kingpin hole, which is the positional accuracy of the tapered hole keyway. Since the positional accuracy of the tapered hole keyway has a significant impact on the steering knuckle arm's deflection angle, the specific angle between the keyway and the kingpin hole is one of the important standards of this steering knuckle.

[0004] When inserting keyways, a positioning fixture is required to fix the steering knuckle. Existing positioning fixtures (such as the machining fixture and machining method for the keyway inside the conical hole of the steering knuckle disclosed in application number 202310643953.9) use the method of positioning the shaft diameter and disc of the steering knuckle to avoid the tool for inserting keyways. However, due to the machining errors between the conical hole and the shaft diameter and disc, the method of positioning the shaft diameter and disc of the steering knuckle will lead to the instability of the position of the keyway relative to the conical hole. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a floating positioning fixture for keyway insertion in steering knuckle tapered holes. This solves the technical problem that the existing method of positioning the shaft diameter and disc of the steering knuckle due to machining errors between the tapered hole and the shaft diameter and disc body can avoid the keyway insertion tool, but it leads to unstable position of the keyway relative to the tapered hole.

[0006] To achieve the above technical objectives, the present invention provides a floating positioning fixture for a steering knuckle cone hole keyway, comprising: The positioning platform has a horizontally arranged bearing surface and a vertically arranged abutting surface; The positioning mechanism includes a positioning shaft and a first telescopic drive member. The upper end of the positioning shaft is a tapered structure and is used to slide into the first tapered hole or the second tapered hole of the steering knuckle. The output end of the first telescopic drive member is connected to the lower end of the positioning shaft and is used to drive the positioning shaft to move up and down so that the steering knuckle is placed on the bearing surface and one side of the steering knuckle abuts against the contact surface. The first clamping mechanism is used to clamp or release the other side of the steering knuckle; A clamping mechanism, used to clamp or loosen the steering knuckle.

[0007] Furthermore, the positioning platform includes a first base, a second base, a third base, and a fourth base. The top surface of the first base forms a first bearing surface, the top surface of the second base forms a second bearing surface, and the top surface of the third base forms a third bearing surface. The fourth base is fixedly connected to the third base, and one side wall of the fourth base forms the abutment surface. The first bearing surface and the second bearing surface are respectively used for mounting the bottom surface of the first or second tapered hole of the steering knuckle. The third bearing surface is used for mounting the bottom surface of the journal of the steering knuckle. The abutment surface is used to abut against one side of the journal of the steering knuckle.

[0008] Furthermore, the positioning shaft corresponds to the first bearing surface.

[0009] Furthermore, the first clamping mechanism corresponds to the abutting surface and can perform reciprocating linear motion in the horizontal plane.

[0010] Furthermore, the first abutting mechanism includes a first abutting shaft and a second telescopic drive member. The first abutting shaft is horizontally arranged and perpendicular to the journal of the steering knuckle. The output end of the second telescopic drive member is fixedly connected to one end of the first abutting shaft and is used to drive the first abutting shaft to reciprocate along its own axial direction so that the other end of the first abutting shaft abuts or releases the other side of the journal of the steering knuckle.

[0011] Furthermore, the clamping mechanism includes a clamping block, a connecting rod, a third telescopic drive member, and a rotation drive member. One end of the connecting rod is detachably and fixedly connected to the clamping block. The output end of the third telescopic drive member is fixedly connected to the other end of the connecting rod, and is used to drive the connecting rod to move up and down to adjust the height of the clamping block. The output end of the rotation drive member is fixedly connected to the fixed end of the third telescopic drive member, and is used to drive the third telescopic drive member to rotate to adjust the position of the clamping block on the horizontal plane.

[0012] Furthermore, the clamping block has an elastic structure.

[0013] Furthermore, the clamping mechanism includes multiple clamping mechanisms, with the first clamping mechanism and the second clamping mechanism respectively used to clamp or loosen the top surface of the first or second tapered hole of the steering knuckle, and the third clamping mechanism used to clamp or loosen the top surface of the journal of the steering knuckle.

[0014] Furthermore, the steering knuckle cone hole pull-in keyway floating positioning fixture also includes a second clamping mechanism, which is disposed between the first fork lug and the second fork lug of the steering knuckle and is used to clamp or loosen the first fork lug and the second fork lug.

[0015] Furthermore, the second abutting mechanism includes two second abutting shafts and two fourth telescopic drive members. Both second abutting shafts are horizontally arranged and perpendicular to the journal of the steering knuckle. The output ends of the two fourth telescopic drive members are fixedly connected to one end of each of the two second abutting shafts, respectively, to drive the second abutting shafts to reciprocate along their own axial direction, so that the other ends of the two second abutting shafts abut or release the inner sides of the first fork lug and the second fork lug, respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model include: In use, the first or second conical hole of the steering knuckle is slidably fitted onto the conical structure of the positioning shaft, which can position the first or second conical hole of the steering knuckle. Then, the first telescopic drive is activated, driving the positioning shaft to move downward until the steering knuckle rests on the bearing surface. Then, the steering knuckle is rotated so that one side of the steering knuckle abuts against the abutment surface, which can position the angle between the keyway and the shaft diameter of the steering knuckle. Then, the first clamping mechanism and the pressing mechanism are operated in sequence, and the other side of the steering knuckle can be clamped by the first clamping mechanism. The steering knuckle can be fixed by clamping the clamping mechanism. Then, the first telescopic drive is activated again, driving the positioning shaft to move downward until the conical structure of the positioning shaft moves out of the first or second conical hole, which can make room for the broaching cutter or gear shaping cutter. This steering knuckle conical hole keyway pulling and inserting floating positioning fixture uses the conical structure of the positioning shaft to position the conical hole, and uses the abutment surface of the positioning table to position the keyway and the shaft diameter to ensure the position accuracy of the keyway relative to the conical hole. When pulling and inserting the keyway, the positioning shaft can be moved out of the conical hole to avoid the keyway pulling and inserting tool. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an existing steering knuckle; Figure 2 This is a schematic diagram of the structure of a floating positioning fixture for a steering knuckle cone hole keyway provided by this utility model; Figure 3 This is a three-dimensional structural diagram of a floating positioning fixture for a steering knuckle cone hole keyway provided by this utility model for clamping and positioning a steering knuckle. In the diagram: 100 – Steering knuckle, 110 – Disc body, 111 – Disc bore, 120 – Journal, 130 – First fork lug, 131 – First kingpin hole, 132 – First tapered hole, 1321 – First keyway, 140 – Second fork lug, 141 – Second kingpin hole, 142 – Second tapered hole, 1421 – Second keyway, 200 – Positioning platform, 210 – First seat body, 211 – First bearing surface, 220 – Second seat body, 221 – Second bearing surface, 230 – Third seat body, 231 – Third bearing surface, 240 – Fourth… 241 - Abutting surface, 300 - Positioning mechanism, 310 - Positioning shaft, 320 - First telescopic drive component, 400 - First clamping mechanism, 410 - First clamping shaft, 420 - Second telescopic drive component, 430 - First support, 500 - Pressing mechanism, 510 - Pressing block, 520 - Connecting rod, 530 - Third telescopic drive component, 540 - Rotation drive component, 600 - Second clamping mechanism, 610 - Second clamping shaft, 620 - Fourth telescopic drive component, 630 - Second support, 700 - Working platform. Detailed Implementation

[0018] 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.

[0019] This utility model provides a floating positioning fixture for a steering knuckle cone hole keyway, the structure of which is as follows: Figure 2 and Figure 3 As shown, the steering knuckle 100 includes a positioning base 200, a positioning mechanism 300, a first abutting mechanism 400, and a pressing mechanism 500. The positioning base 200 has a horizontally arranged bearing surface and a vertically arranged abutting surface 241. The positioning mechanism 300 includes a positioning shaft 310 and a first telescopic drive member 320. The upper end of the positioning shaft 310 has a conical structure and is used to slide into the first conical hole 132 or the second conical hole 142 of the steering knuckle 100. The output end of the first telescopic drive member 320 is connected to the lower end of the positioning shaft 310 and is used to drive the positioning shaft 310 to move up and down so that the steering knuckle 100 is placed on the bearing surface and one side of the steering knuckle 100 abuts against the abutting surface 241. The first abutting mechanism 400 is used to press or release the other side of the steering knuckle 100. The pressing mechanism 500 is used to press or release the steering knuckle 100.

[0020] In use, first align the central axis of the positioning shaft 310 parallel to the running direction of the broach. Then, activate the first telescopic drive 320 to move the positioning shaft 310 upward to a preset position. Next, slide the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100 onto the tapered structure of the positioning shaft 310 to position the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100. Then, activate the first telescopic drive 320 to move the positioning shaft 310 downward until the steering knuckle 100 rests on the bearing surface. Then, rotate the steering knuckle 100 so that one side of the steering knuckle 100 abuts against the contact surface 241 to position the angle between the keyway and the shaft diameter of the steering knuckle 100. Then, sequentially operate the first clamping mechanism 400 and the pressing mechanism 500 to achieve the desired effect. Mechanism 400 abuts against the other side of steering knuckle 100, and the steering knuckle 100 can be pressed by the clamping mechanism 500 to fix the steering knuckle 100. When the broaching cutter or gear shaping cutter pulls the keyway, the steering knuckle 100 will not move. Then the first telescopic drive member 320 is activated again to drive the positioning shaft 310 to move downward until the conical structure of the positioning shaft 310 moves out of the first conical hole 132 or the second conical hole 142, so as to make room for the broaching cutter or gear shaping cutter. This steering knuckle conical hole keyway pulling and inserting floating positioning fixture uses the conical structure of the positioning shaft 310 to position the conical hole, and uses the abutment surface 241 of the positioning platform to position the angle between the keyway and the shaft diameter, ensuring the position accuracy of the keyway relative to the conical hole. When pulling and inserting the keyway, the positioning shaft 310 can be moved out of the conical hole to avoid the keyway pulling and inserting tool.

[0021] In a preferred embodiment, the first telescopic drive member 320 is a first cylinder.

[0022] As a preferred embodiment, please refer to Figure 2 and Figure 3The positioning platform 200 includes a first base 210, a second base 220, a third base 230, and a fourth base 240. The top surface of the first base 210 forms a first bearing surface 211, the top surface of the second base 220 forms a second bearing surface 221, and the top surface of the third base 230 forms a third bearing surface 231. The fourth base 240 is fixedly connected to the third base 230, and one side wall of the fourth base 240 forms the abutment surface 241. The first bearing surface and the second bearing surface 221 are respectively used for the bottom surface of the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100 to be mounted. The third bearing surface 231 is used for the journal of the steering knuckle 100. The bottom surface of the steering knuckle 100 is mounted on the first bearing surface 221 and the bottom surface of the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100 is mounted on the first bearing surface 221 and the second bearing surface 221, respectively. The bottom surface of the journal 120 of the steering knuckle 100 is mounted on the third bearing surface 231, which can realize the bearing function of the steering knuckle 100. The tapered structure of the positioning shaft 310 is slidably inserted into the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100. By rotating the steering knuckle 100, the journal 120 of the steering knuckle 100 is mounted on the abutment surface 241, thereby positioning the angle between the keyway and the shaft diameter of the steering knuckle 100.

[0023] As a preferred embodiment, please refer to Figure 2 and Figure 3The positioning shaft 310 corresponds to the first bearing surface 211. When the first keyway 1321 is pulled into the first conical hole 132 of the steering knuckle 100, the first conical hole 132 is slidably fitted onto the conical structure of the positioning shaft 310, thus positioning the first conical hole 132 of the steering knuckle 100. Then, the first telescopic drive member 320 is activated, driving the positioning shaft 310 to move downward until the bottom surface of the first conical hole 132 rests on the first bearing surface 211, the bottom surface of the second conical hole 142 rests on the second bearing surface 221, and the bottom surface of the journal 120 of the steering knuckle 100 rests on the third bearing surface 231. Then, the steering knuckle 100 is rotated so that one side of the journal 120 of the steering knuckle 100 abuts against the abutment surface 241, thus positioning the steering knuckle 100. The angle between the keyway and the shaft diameter is used for positioning. When the second keyway 1421 is pulled into the second conical hole 142 of the steering knuckle 100, the second conical hole 142 is slidably sleeved on the conical structure of the positioning shaft 310, which can position the second conical hole 142 of the steering knuckle 100. Then, the first telescopic drive 320 is activated, driving the positioning shaft 310 to move downward until the bottom surface of the second conical hole 142 is placed on the first bearing surface 211, the bottom surface of the first conical hole 132 is placed on the second bearing surface 221, and the bottom surface of the journal 120 of the steering knuckle 100 is placed on the third bearing surface 231. Then, the steering knuckle 100 is rotated so that one side of the journal 120 of the steering knuckle 100 abuts against the abutment surface 241, which can position the angle between the keyway and the shaft diameter of the steering knuckle 100.

[0024] As a preferred embodiment, please refer to Figure 2 and Figure 3 The first clamping mechanism 400 corresponds to the abutment surface 241 and can reciprocate linearly in the horizontal plane. Thus, the journal 120 of the steering knuckle 100 can be fixed by the interaction between the first clamping mechanism 400 and the abutment surface 241.

[0025] As a preferred embodiment, please refer to Figure 2 and Figure 3The first clamping mechanism 400 includes a first clamping shaft 410 and a second telescopic drive member 420. The first clamping shaft 410 is horizontally arranged and perpendicular to the journal 120 of the steering knuckle 100. The output end of the second telescopic drive member 420 is fixedly connected to one end of the first clamping shaft 410 and is used to drive the first clamping shaft 410 to reciprocate along its own axial direction so that the other end of the first clamping shaft 410 clamps or releases the other side of the journal 120 of the steering knuckle 100. When the second telescopic drive member 420 is activated, it drives the first clamping shaft 410 to reciprocate along its own axial direction, thereby allowing the other end of the first clamping shaft 410 to clamp or release the other side of the journal 120 of the steering knuckle 100, thus achieving clamping or releasing of the journal 120 of the steering knuckle 100.

[0026] In a preferred embodiment, the second telescopic drive member 420 is a second cylinder.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 3 The first clamping mechanism 400 further includes a first support 430, which is fixedly connected to the third seat 230. The fixed end of the second telescopic drive member 420 is fixedly connected to the first support 430, and the first support 430 can provide support for the second telescopic drive member 420.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 3 The clamping mechanism 500 includes a clamping block 510, a connecting rod 520, a third telescopic drive member 530, and a rotation drive member 540. One end of the connecting rod 520 is detachably and fixedly connected to the clamping block 510. The output end of the third telescopic drive member 530 is fixedly connected to the other end of the connecting rod 520, and is used to drive the connecting rod 520 to move up and down to adjust the height of the clamping block 510. The output end of the rotation drive member 540 is fixedly connected to the fixed end of the third telescopic drive member 530, and is used to drive the third telescopic drive member 530 to rotate to adjust the height of the clamping block 510. When the rotating drive 540 is in a horizontal position, it drives the third telescopic drive 530 to rotate, thereby driving the clamping block 510 to rotate via the connecting rod 520. This adjusts the position of the clamping block 510 on the horizontal plane, so that the clamping block 510 is opposite to or misaligned with the steering knuckle 100. When the clamping block 510 is opposite to the steering knuckle 100, the third telescopic drive 530 is activated, driving the connecting rod 520 to move downward, thereby driving the clamping block 510 to move downward until the clamping block 510 presses against the steering knuckle 100.

[0029] In a preferred embodiment, the third telescopic drive member 530 is a third cylinder.

[0030] In a preferred embodiment, the rotation drive 540 is a motor.

[0031] As a preferred embodiment, please refer to Figure 2 and Figure 3 The clamping block 510 has an elastic structure, which can improve the clamping effect on the steering knuckle 100.

[0032] In a preferred embodiment, the clamping block 510 is a rubber block, which improves the clamping effect on the steering knuckle 100.

[0033] As a preferred embodiment, please refer to Figure 2 and Figure 3 The clamping mechanism 500 includes multiple components. The first clamping mechanism 500 and the second clamping mechanism 500 are used to clamp or loosen the top surface of the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100, respectively. The third clamping mechanism 500 is used to clamp or loosen the top surface of the journal 120 of the steering knuckle 100. This can ensure the uniformity of clamping and improve the clamping effect on the steering knuckle 100.

[0034] As a preferred embodiment, please refer to Figure 2 and Figure 3 The first pressing block 510 of the first pressing mechanism 500 and the second pressing block 510 of the second pressing mechanism 500 are respectively used to press or release the top surface of the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100. The third pressing block 510 of the third pressing mechanism 500 is used to press or release the top surface of the journal 120 of the steering knuckle 100, which can ensure the uniformity of pressing and improve the pressing effect on the steering knuckle 100.

[0035] As a preferred embodiment, please refer to Figure 2 and Figure 3 The steering knuckle cone hole pull-in keyway floating positioning fixture further includes a second clamping mechanism 600. The second clamping mechanism 600 is disposed between the first fork lug 130 and the second fork lug 140 of the steering knuckle 100 and is used to clamp or loosen the first fork lug 130 and the second fork lug 140, so that the first fork lug 130 and the second fork lug 140 of the steering knuckle 100 can be fixed by the second clamping mechanism 600.

[0036] As a preferred embodiment, please refer to Figure 2 and Figure 3The second abutment mechanism 600 includes two second abutment shafts 610 and two fourth telescopic drive members 620. The two second abutment shafts 610 are both horizontally arranged and perpendicular to the journal 120 of the steering knuckle 100. The output ends of the two fourth telescopic drive members 620 are fixedly connected to one end of each of the two second abutment shafts 610, respectively, to drive the second abutment shafts 610 to reciprocate along their own axial direction, so that the other ends of the two second abutment shafts 610 respectively abut against or release the inner side of the first fork lug 130 and the second fork lug 140. When the two fourth telescopic drive members 620 are activated simultaneously, they can drive the corresponding second abutment shafts 610 to reciprocate along their own axial direction, so that the other ends of the two second abutment shafts 610 respectively abut against or release the inner side of the first fork lug 130 and the second fork lug 140, thereby fixing or releasing the first fork lug 130 and the second fork lug 140 of the steering knuckle 100.

[0037] In a preferred embodiment, the fourth telescopic drive member 620 is a fourth cylinder.

[0038] As a preferred embodiment, please refer to Figure 2 and Figure 3 The second clamping mechanism 600 also includes a second support 630, and the fixed ends of the two fourth telescopic drive members 620 are fixedly connected to the second support 630. The second support 630 can provide support for the two fourth telescopic drive members 620.

[0039] As a preferred embodiment, please refer to Figure 2 and Figure 3 The aforementioned steering knuckle cone hole keyway floating positioning fixture further includes a working platform 700. The first seat 210, the second seat 220, and the third seat 230 are all connected to the working platform 700. The fixed end of the first telescopic drive member 320 is fixedly connected to the working platform 700. The working platform 700 can provide support for the first seat 210, the second seat 220, the third seat 230, and the first telescopic drive member 320.

[0040] To better understand this utility model, the following is combined with... Figure 1 - Figure 3 The working principle of the technical solution of this utility model will be described in detail below: In use, first align the central axis of the positioning shaft 310 parallel to the running direction of the broach. Then, activate the first telescopic drive 320 to move the positioning shaft 310 upward to a preset position. Next, according to actual processing requirements, slide the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100 onto the tapered structure of the positioning shaft 310 to position the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100. Then, activate the first telescopic drive 320 to move the positioning shaft 310 downward until the bottom surface of the first tapered hole 132 or the second tapered hole 142 of the steering knuckle 100 rests on the first bearing surface and the second bearing surface 221, respectively. The bottom of the journal 120 of the steering knuckle 100... The surface is placed on the third bearing surface 231 to support the steering knuckle 100. Rotating the steering knuckle 100 causes one side of the journal 120 of the steering knuckle 100 to abut against the abutment surface 241, allowing for the positioning of the angle between the keyway and the shaft diameter of the steering knuckle 100. Then, the second telescopic drive member 420 is activated, driving the first abutment shaft 410 to move axially, thereby abutting the other end of the first abutment shaft 410 against the other side of the journal 120 of the steering knuckle 100, thus fixing the journal 120 of the steering knuckle 100. Each of the clamping mechanisms 500 is activated sequentially, clamping the steering knuckle 100. When the clamping mechanism 500 is activated... When the rotation drive 540 is activated first, it drives the third telescopic drive 530 to rotate, thereby rotating the clamping block 510 via the connecting rod 520. This adjusts the position of the clamping block 510 on the horizontal plane, positioning it opposite the steering knuckle 100. When the clamping block 510 is opposite the steering knuckle 100, the third telescopic drive 530 is activated, driving the connecting rod 520 downwards, which in turn moves the clamping block 510 downwards until it presses against the steering knuckle 100. Then, both fourth telescopic drive 620s are activated simultaneously, driving the corresponding second abutment shaft 610 to move along its own axial direction, thereby allowing... The other ends of the two second clamping shafts 610 respectively abut against the inner sides of the first fork lug 130 and the second fork lug 140, thereby fixing the first fork lug 130 and the second fork lug 140 of the steering knuckle 100. When the broaching cutter or gear shaping cutter inserts the keyway, the steering knuckle 100 will not move. Then, the first telescopic drive member 320 is activated again, driving the positioning shaft 310 to move downward until the conical structure of the positioning shaft 310 moves out of the first conical hole 132 or the second conical hole 142, which can make room for the broaching cutter or gear shaping cutter. This steering knuckle conical hole keyway insertion floating positioning fixture uses the conical structure of the positioning shaft 310 to position the conical hole, and uses the abutment surface 241 of the positioning platform to position the angle between the keyway and the shaft diameter.To ensure the positional accuracy of the keyway relative to the tapered hole, and to allow the positioning shaft 310 to move out of the tapered hole during keyway insertion, thus avoiding the keyway insertion tool.

[0041] The floating positioning fixture for the keyway of the steering knuckle tapered hole provided by this utility model has the following beneficial effects: (1) The other end of the first abutting shaft 410 abuts against the other side of the journal 120 of the steering knuckle 100, thereby fixing the journal 120 of the steering knuckle 100 in the horizontal direction. Each of the clamping blocks 510 clamps the steering knuckle 100, thereby fixing the steering knuckle 100 in the vertical direction. The other ends of the two second abutting shafts 610 abut against the inner sides of the first fork lug 130 and the second fork lug 140, respectively, thereby fixing the first fork lug 130 and the second fork lug 140 of the steering knuckle 100 in the horizontal direction. When the broaching cutter or the gear cutting cutter pulls and inserts the keyway, the steering knuckle 100 will not move. (2) When the steering knuckle 100 is fixed, the positioning shaft 310 moves downward until the tapered structure of the positioning shaft 310 moves out of the first tapered hole 132 or the second tapered hole 142, which can make room for the broaching cutter or the gear shaping cutter. (3) The floating positioning fixture for keyway insertion of the steering knuckle tapered hole uses the tapered structure of the positioning shaft 310 to position the tapered hole, and uses the abutment surface 241 of the positioning platform to position the angle between the keyway and the shaft diameter, so as to ensure the position accuracy of the keyway relative to the tapered hole. When the keyway is inserted, the positioning shaft 310 can be moved out of the tapered hole to avoid the keyway insertion tool.

[0042] 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 floating positioning fixture for a steering knuckle cone hole keyway, characterized in that, include: The positioning platform has a horizontally arranged bearing surface and a vertically arranged abutting surface; The positioning mechanism includes a positioning shaft and a first telescopic drive member. The upper end of the positioning shaft is a tapered structure and is used to slide into the first tapered hole or the second tapered hole of the steering knuckle. The output end of the first telescopic drive member is connected to the lower end of the positioning shaft and is used to drive the positioning shaft to move up and down so that the steering knuckle is placed on the bearing surface and one side of the steering knuckle abuts against the contact surface. The first clamping mechanism is used to clamp or release the other side of the steering knuckle; A clamping mechanism, used to clamp or loosen the steering knuckle.

2. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 1, characterized in that, The positioning platform includes a first base, a second base, a third base, and a fourth base. The top surface of the first base forms a first bearing surface, the top surface of the second base forms a second bearing surface, and the top surface of the third base forms a third bearing surface. The fourth base is fixedly connected to the third base, and one side wall of the fourth base forms the abutment surface. The first bearing surface and the second bearing surface are respectively used for mounting the bottom surface of the first or second tapered hole of the steering knuckle. The third bearing surface is used for mounting the bottom surface of the journal of the steering knuckle. The abutment surface is used to abut against one side of the journal of the steering knuckle.

3. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 2, characterized in that, The positioning shaft corresponds to the first bearing surface.

4. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 1, characterized in that, The first clamping mechanism corresponds to the abutting surface and can reciprocate linearly in the horizontal plane.

5. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 4, characterized in that, The first abutting mechanism includes a first abutting shaft and a second telescopic drive member. The first abutting shaft is horizontally arranged and perpendicular to the journal of the steering knuckle. The output end of the second telescopic drive member is fixedly connected to one end of the first abutting shaft and is used to drive the first abutting shaft to reciprocate along its own axial direction so that the other end of the first abutting shaft abuts or releases the other side of the journal of the steering knuckle.

6. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 1, characterized in that, The clamping mechanism includes a clamping block, a connecting rod, a third telescopic drive component, and a rotation drive component. One end of the connecting rod is detachably and fixedly connected to the clamping block. The output end of the third telescopic drive component is fixedly connected to the other end of the connecting rod, and is used to drive the connecting rod to move up and down to adjust the height of the clamping block. The output end of the rotation drive component is fixedly connected to the fixed end of the third telescopic drive component, and is used to drive the third telescopic drive component to rotate to adjust the position of the clamping block on the horizontal plane.

7. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 6, characterized in that, The clamping block has an elastic structure.

8. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 1, characterized in that, The clamping mechanism includes multiple clamping mechanisms. The first clamping mechanism and the second clamping mechanism are used to clamp or loosen the top surface of the first tapered hole or the second tapered hole of the steering knuckle, respectively. The third clamping mechanism is used to clamp or loosen the top surface of the journal of the steering knuckle.

9. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 1, characterized in that, It also includes a second clamping mechanism, which is disposed between the first and second forks of the steering knuckle and is used to clamp or loosen the first and second forks.

10. The floating positioning fixture for the steering knuckle cone hole keyway according to claim 9, characterized in that, The second abutting mechanism includes two second abutting shafts and two fourth telescopic drive members. Both second abutting shafts are horizontally arranged and perpendicular to the journal of the steering knuckle. The output ends of the two fourth telescopic drive members are fixedly connected to one end of each of the two second abutting shafts, and are used to drive the second abutting shafts to reciprocate along their own axial direction so that the other ends of the two second abutting shafts abut or release the inner sides of the first fork lug and the second fork lug, respectively.

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