Automatic rotating positioning clamp for processing forklift steering axle

Abstract

The utility model discloses a kind of automatic rotary positioning fixture of forklift steering axle processing, it is related to processing fixture technical field.The utility model includes bottom plate, two positioning components of being set in the both ends of bottom plate;Two adjusting components A are set on the bottom plate between two positioning components;The edge side of bottom plate is provided with two rotary compression components A, and the other edge side of bottom plate is provided with a rotary compression component B and rotary compression component C.The utility model is set with two positioning components, two adjusting components, two rotary compression components A and a rotary compression component B and a rotary compression component C on bottom plate, realize the overall reasonable layout of fixture, can be effectively positioned and compressed to forklift steering axle, improve processing stability.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, and in particular relates to an automatic rotary positioning fixture for machining forklift steering axles. Background Technology

[0002] The steering axle is a key component in the steering axle that bears and transmits various forces and torques. It usually works in conjunction with components such as the steering knuckle and front axle to realize the vehicle's steering function. When performing operations such as grinding, boring, and drilling on the steering axle, it is necessary to use clamps to fix the steering axle in place to prevent the steering axle from moving during the operation.

[0003] As a key component of forklifts, the machining accuracy of the forklift steering axle directly affects the overall performance and service life of the vehicle. In existing technologies, forklift steering axle machining fixtures often suffer from problems such as inaccurate positioning, inconvenient adjustment, and weak clamping. For example, traditional fixtures may employ simple mechanical clamping methods, which are difficult to adapt to the complex structure of the steering axle, leading to easy displacement and vibration of the forklift steering axle during machining, thus affecting machining accuracy and efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic rotary positioning fixture for processing forklift steering axles. By setting two positioning components, two adjustment components, two rotary clamping components A, one rotary clamping component B, and one rotary clamping component C on the base plate, the problems mentioned in the background art are solved.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an automatic rotary positioning fixture for machining forklift steering axles, comprising a base plate, with both ends of the base plate mounted on a flipping mechanism, and two positioning components disposed at both ends of the base plate; two adjusting components A are disposed on the base plate between the two positioning components; two rotary clamping components A are disposed on one edge of the base plate, and a rotary clamping component B and a rotary clamping component C are disposed on the other edge of the base plate; the fixture achieves a reasonable overall layout, effectively positioning and clamping the forklift steering axle, and improving machining stability.

[0006] Furthermore, the forklift steering axle includes a first crossbeam and a second crossbeam symmetrically arranged, with a connecting portion between the first crossbeam and the second crossbeam; the first crossbeam, the second crossbeam, and the connecting portion constitute the steering axle body, a shoulder is provided in the middle of the steering axle body, and mounting shafts are provided at both ends of the shoulder; pin seats are provided at both ends of the first crossbeam and the second crossbeam; through holes are provided on the connecting portions located on both sides of the shoulder.

[0007] Furthermore, the two adjustment components A respectively penetrate through two through holes; each adjustment component A includes a base A penetrating through the through hole, with a through hole C provided on one side of the base A; a groove is provided on the bottom side of the through hole C, and a threaded hole for a threaded bolt A is provided on the top of the through hole C; top blocks A are slidably provided on both sides of the through hole C along its axial direction, and an abutment part A is provided on the outer wall of the end of the top block A; a T-shaped guide groove is provided on the inner wall of the top block A, and it also includes a driving block A with an isosceles trapezoidal cross-section, with T-shaped guide sliders inserted into the T-shaped guide grooves at both ends of the driving block A; vertical guide grooves A are provided on both sides of the through hole C, with the bottom end of the guide grooves A extending into the groove; guide sliders that slide along the guide grooves A are provided on both sides of the driving block A, and the end of the bolt A is rotatably connected to the top of the driving block A; the top block A is driven to move radially by the inclined surface of the driving block A, thereby achieving precise adjustment and reliable tightening within the through hole and preventing the forklift steering axle from loosening.

[0008] Furthermore, one of the adjustment components A has a rotary clamping component A and a rotary clamping component C respectively on its two sides, and the other adjustment component A has a rotary clamping component A and a rotary clamping component B respectively on its two sides; the rotary clamping component A includes a rotary clamping mechanism A and a support mechanism A, with the support mechanism A located between the adjustment component A and the rotary clamping mechanism A; the rotary clamping component B includes a rotary clamping mechanism B and a support mechanism B, with the support mechanism B located between the adjustment component A and the rotary clamping mechanism B; the rotary clamping component C includes a rotary clamping mechanism C and a support mechanism C, with the support mechanism C located between the adjustment component A and the rotary clamping mechanism C.

[0009] Furthermore, the rotary clamping mechanism A includes a rotary cylinder on the upper surface of the base plate and a connecting sleeve disposed at the output end of the rotary cylinder. An inner guide sleeve is provided inside the connecting sleeve, and a rotary arm is connected to the end of the inner guide sleeve. A clamping head A is disposed at the end of the rotary arm. A T-shaped limiting rod B, whose bottom end is connected to the connecting sleeve, is provided through one end of the rotary arm, and a return spring is connected between the inner guide sleeve and the connecting sleeve. The rotary clamping mechanisms A, B, and C have the same structure. The end face of the clamping head A of the rotary clamping mechanisms B and C is a planar structure. The end face of the clamping head A of the rotary clamping mechanism A is a spherical structure. The spherical clamping head adapts to uneven surfaces, while the planar clamping head provides stable clamping, reduces damage to the surface of the forklift steering axle, and enhances adaptability.

[0010] Furthermore, the support mechanism A and support mechanism B have the same structure; support mechanism A includes a support, and the end of the support is provided with a protrusion, on which a plurality of frustum / frustum-shaped copper pressure blocks are evenly distributed; the copper pressure blocks reduce wear, provide stable support, and extend the service life of the fixture.

[0011] Furthermore, the positioning component includes a base, the upper surface of which is provided with a boss, the inner wall of which is provided with an arc surface that mates with the end of the connecting part, the arc surface mates with the end of the connecting part to achieve rapid positioning; mounting holes are provided on both sides of the end face of the boss, a telescopic cylinder is installed in the mounting holes, a clamping arm is provided at the end of the telescopic cylinder, and a clamping head B with a spherical structure is provided on the bottom side of the end of the clamping arm, the cooperation of the clamping arm and the clamping head B ensures reliable clamping of the forklift steering axle; a guide rod is provided on the bottom side of the clamping arm, and a guide hole that mates with the guide rod is opened on the end face of the boss.

[0012] Furthermore, elastic support mechanisms are respectively provided at both ends of the base, and the elastic support mechanisms and support mechanism C have the same structure; support mechanism C includes base B, a blind hole is opened on the end face of base B, and a movable column that moves up and down along the inner wall of the blind hole is connected to the bottom side of the blind hole by a spring. The end of the movable column is provided with an abutment, and a rectangular hole is provided on the movable column; through holes A and through holes B are respectively opened on the opposite side walls of base B, and through holes A and through holes B are concentric; through holes A and through holes B are both connected to the blind hole; a fixing sleeve with a threaded blind hole on the end face is installed in through hole B; it also includes a T-shaped limiting rod A with one end passing through through hole A and rectangular hole in sequence, and the other end being threadedly connected to the threaded blind hole.

[0013] Furthermore, an adjustment component B is provided on the upper surface of the base plate located between the rotary clamping component B and the rotary clamping component C; the adjustment component B includes a base C, one end of which is provided with a rectangular groove, one side of which is provided with an opening, and the other end face of the base C is provided with a mounting groove communicating with the opening; a mounting plate is installed in the mounting groove, and a bolt B is threadedly connected to the mounting plate, the end of which is rotatably connected to a drive block B with a rotating cross section of an isosceles trapezoid; guide grooves B are provided on both sides of the rectangular groove along its length direction, and two movable blocks are also provided that slide along the length direction of the rectangular groove, and guide sliders that slide along the guide grooves B are respectively provided on both sides of the movable blocks; a connecting seat is provided at the end of the movable block, and a stop rod is fixed to the connecting seat; a limiting plate is provided in the middle of the rectangular groove; each of the two movable blocks has an inclined surface that cooperates with the drive block B; the movable blocks are driven to move in both directions by the inclined surface of the drive block B, so as to achieve precise adjustment of the middle of the steering axle and enhance the overall stability.

[0014] This utility model has the following beneficial effects: This utility model achieves a reasonable overall layout of the fixture by setting two positioning components, two adjustment components, two rotary clamping components A, one rotary clamping component B, and one rotary clamping component C on the base plate. This enables effective positioning and clamping of the forklift steering axle, improving processing stability. The inclined surface of the drive block A drives the top block A to move radially, achieving precise adjustment and reliable clamping within the through hole, preventing the forklift steering axle from loosening.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the fixture in use according to the present invention; Figure 2 This is a schematic diagram of the forklift steering axle structure of the present invention. Figure 3 This is a schematic diagram of the fixture structure of this utility model; Figure 4 This is a schematic diagram of the positioning component structure of this utility model; Figure 5 This is a diagram showing the distribution of rotary clamping assembly A and rotary clamping assembly C of this utility model; Figure 6 This is a diagram showing the distribution of rotary clamping assembly A and rotary clamping assembly B of this utility model; Figure 7 This is a schematic diagram of the structure of the adjustment component A of this utility model; Figure 8 This is a schematic diagram of the support mechanism C structure of this utility model; Figure 9 This is a schematic diagram of the adjustment component B structure of this utility model; Figure 10 This is a cross-sectional view of the adjusting component B of this utility model; Figure 11 This is a schematic diagram of the fixture installation structure of this utility model; Figure 12 for Figure 11 The main view; The attached diagram lists the components represented by each number as follows: 1-Forklift steering axle, 2-Base plate, 3-Positioning assembly, 4-Adjustment assembly A, 5-Rotary clamping assembly A, 6-Rotary clamping assembly C, 7-Adjustment assembly B, 8-Rotary clamping assembly B, 10-First crossbeam, 101-Inclined surface structure, 111-Horizontal surface structure, 11-Second crossbeam, 12-Pin seat, 13-Connecting part, 14-Through hole, 15-Shoulder, 16-Mounting shaft, 32-Base, 33-Arc surface, 35-Clamping arm, 36-Elastic support mechanism, 41-Base A, 42-Through hole C, 43-Top block A, 44-T-shaped guide groove, 45-Bolt A, 46-Drive block A, 47-Guide slide A, 50-Rotary cylinder, 52-Rotary arm, 53-Clamping head A, 54-Support mechanism A, 55-T-shaped limit rod B, 61-Rotary... 62-Support mechanism C, 70-Base C, 71-Rectangular groove, 72-Mounting groove, 73-Drive block B, 74-Moving block, 75-Connecting seat, 76-Abutting rod, 81-Rotating clamping mechanism B, 82-Support mechanism B, 350-Clamping head B, 352-Guide rod, 420-Groove, 431-Abutting part A, 540-Support, 541-Protrusion, 542-Copper pressure block, 620-Base B, 621-Blind hole, 622-Spring, 623-Moving column, 624-Rectangular hole, 625-Abutting part, 626-Through hole B, 627-Through hole A, 628-T-type limit rod A, 629-Fixing sleeve, 630-Threaded blind hole, 720-Mounting plate, 722-Bolt B, 731-Limiting plate, 9-Flipping mechanism. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] This utility model relates to an automatic rotary positioning fixture for machining forklift steering axles. This machining fixture is used for machining such... Figure 2The forklift steering axle 1 shown is fixed. The forklift steering axle 1 includes a first crossbeam 10 and a second crossbeam 11 arranged symmetrically, with a connecting part 13 connecting the first crossbeam 10 and the second crossbeam 11. The first crossbeam 10, the second crossbeam 11 and the connecting part 13 constitute the main body of the steering axle. A shoulder 15 is provided in the middle of the main body of the steering axle, and mounting shafts 16 are provided at both ends of the shoulder 15. Pin seats 12 are provided at both ends of the first crossbeam 10 and the second crossbeam 11. Through holes 14 are opened on the connecting parts 13 on both sides of the shoulder 15. An inclined structure 101 is provided on the side end face of the second crossbeam 11 on both sides of the shoulder 15, and a horizontal structure 111 is provided on the side end face of the first crossbeam 10 on both sides of the shoulder 15.

[0021] To facilitate the fixing of the aforementioned forklift steering axle, such as Figure 11-12 As shown, the processing fixture provided by this utility model includes a rectangular base plate 2. Both ends of the base plate 2 are mounted on a flipping mechanism 9. When the flipping mechanism 9 is working, it drives the base plate 2 to flip. In use, it processes the forklift steering axle 1 fixed on the base plate 2. The middle of the base plate 2 is provided with a clearance opening 21 for the shoulder 15 of the forklift steering axle to pass through. A positioning component 3 is fixed at both ends of the upper surface of the base plate 2. Two adjustment components A4 are provided on the base plate 2 between the two positioning components 3. The two adjustment components A4 pass through the two through holes 14 respectively. Two rotary clamping components A5 are provided on one edge side of the base plate 2, and a rotary clamping component B8 and a rotary clamping component C6 are provided on the other edge side of the base plate 2.

[0022] Specific distributions are as follows Figure 1 and 3 As shown, a rotary clamping component A5 and a rotary clamping component B8 are respectively provided on both sides of an adjustment component A4, and a rotary clamping component A5 and a rotary clamping component C6 are respectively provided on both sides of another adjustment component A4.

[0023] Based on the above settings, in order to facilitate the positioning and fixing of the forklift steering axle 1 during use, the forklift steering axle 1 is first placed on the machining fixture, and the forklift steering axle 1 is positioned in the first direction using two positioning components 3. The two adjustment components A4 are controlled to position the forklift steering axle 1 in the second direction. Finally, the rotary clamping components A5, B8 and C6 are controlled to clamp and fix the forklift steering axle 1.

[0024] Specifically, to facilitate the positioning of the forklift steering axle 1 placed on the machining fixture in the first direction, such as... Figure 4The provided positioning component 3 includes a base 31 fixed to the upper surface of the base plate 2. A boss 32 is provided on the upper surface of the base 31. The inner wall of the boss 32 is provided with an arc surface 33 that mates with the end of the connecting part 13. Mounting holes are provided on both sides of the end face of the boss 32. Telescopic cylinders are installed in the mounting holes. A clamping arm 35 is provided at the end of the telescopic cylinder. A clamping head B350 with a spherical structure is provided on the bottom side of the end of the clamping arm 35. A guide rod 352 is provided on the bottom side of the clamping arm 35. A guide hole that mates with the guide rod 352 is opened on the end face of the boss 32. That is, when the forklift steering axle 1 is placed on the processing fixture, the two bosses 32 with arc surfaces 33 are used to position the forklift steering axle 1 located above the base plate 2.

[0025] Specifically, to facilitate the adjustment of the position of the forklift steering axle 1 in the second direction via adjusting component A4, such as... Figure 7 The provided adjustment component A4 includes a base A41 with a through hole 14, and a through hole C42 is provided on one side of the base A41; a groove 420 is provided on the bottom side of the through hole C42, and a threaded hole for a threaded bolt A45 is provided on the top of the through hole C42; top blocks A43 are slidably provided on both sides of the through hole C42 along its axial direction, and an abutment part A431 is provided on the outer wall of the end of the top block A43; a T-shaped guide groove 44 is provided on the inner wall of the top block A43; and a driving block A46 with an isosceles trapezoidal cross-section is also included, with T-shaped guide sliders inserted into the T-shaped guide groove 44 at both ends of the driving block A46; the length direction of the through hole C42 is perpendicular to the length direction of the base plate 2, and vertical grooves are provided on both sides of the through hole C42. The guide groove A47 extends to the groove 420 at its bottom end. Guide sliders that slide along the guide groove A47 are respectively provided on both sides of the drive block A46. The end of the bolt A45 is rotatably connected to the top of the drive block A46. When the forklift steering axle 1 is placed on the machining fixture, the drive block A46 is moved downward by rotating the bolt A45. The drive block A46 drives the two top blocks A43 located on both sides of the drive block A46 to move in a direction away from each other. At this time, the outer walls of the two top blocks A43 are provided with abutment parts A431 that abut against the opposite side walls of the through hole 14. Thus, it is convenient to adjust the position of the forklift steering axle 1 in the second direction by adjusting the setting of the component A4.

[0026] Specifically, to facilitate the fixing of the forklift steering axle 1 after positioning during use, and to support the forklift steering axle 1 during placement, the technical solution of this application includes, for example... Figure 5-6Rotary clamping assembly A5 includes a rotary clamping mechanism A and a support mechanism A54, with the support mechanism A54 located between the adjusting assembly A4 and the rotary clamping mechanism A; Rotary clamping assembly B8 includes a rotary clamping mechanism B81 and a support mechanism B82, with the support mechanism B82 located between the adjusting assembly A4 and the rotary clamping mechanism B81; Rotary clamping assembly C6 includes a rotary clamping mechanism C61 and a support mechanism C62, with the support mechanism C62 located between the adjusting assembly A4 and the rotary clamping mechanism C61; Support mechanism A54 and support mechanism B82 have the same structure; Support mechanism A54 includes a support 540, with a protrusion 541 at the end of the support 540, and several frustum / frustum-shaped copper pressure blocks 542 evenly distributed on the protrusion 541, with the multiple copper pressure blocks 542 on the protrusion 541 forming a support sub-plane.

[0027] In other words, during use, the three support sub-planes on the two support mechanisms A54 and one support mechanism B82 form a support plane on the same horizontal plane, and the forklift steering axle 1 is supported by this support plane.

[0028] At the same time, in order to press and fix the forklift steering axle 1 onto the machining fixture during use, such as Figure 5-6 The provided rotary pressing mechanism A includes a rotary cylinder 50 on the upper surface of the base plate 2, a connecting sleeve 51 disposed at the output end of the rotary cylinder 50, an inner guide sleeve being provided inside the connecting sleeve 51, a rotary arm 52 being connected to the end of the inner guide sleeve, and a pressing head A53 being disposed at the end of the rotary arm 52; a T-shaped limiting rod B55, whose bottom end is connected to the connecting sleeve 51, is provided through one end of the rotary arm 52, and a return spring is connected between the inner guide sleeve and the connecting sleeve 51; the rotary pressing mechanism A, the rotary pressing mechanism B81, and the rotary pressing head A53 are provided. The three clamping mechanisms C61 have the same structure; the clamping head A53 end face of the rotary clamping mechanism B81 and the rotary clamping mechanism C61 is a planar structure; the clamping head A53 end face of the rotary clamping mechanism A is a spherical structure. When in use, after the forklift steering axle 1 is supported and positioned, the rotary cylinder 50 is controlled to rotate, which drives the rotary arm 52 to rotate, thereby causing the clamping head A53 at the end of the rotary arm 52 to abut against the side end face of the first crossbeam 10 and the second crossbeam 11, thus completing the clamping and fixing of the forklift steering axle 1.

[0029] After controlling the rotational clamping mechanism A, rotational clamping mechanism B81 and rotational clamping mechanism C61 to operate, the telescopic cylinder is controlled to retract, driving the clamping arm 35 to move downward to clamp and fix the ends of the first crossbeam 10 and the second crossbeam 11.

[0030] In order to improve the support of the machining fixture for the forklift steering axle 1, elastic support mechanisms 36 are respectively provided at both ends of the base 31. The elastic support mechanisms 36 are supported on the bottom side of the ends of the first crossbeam 10 and the second crossbeam 11. At the same time, the support mechanism B82 has the same structure and is supported on the end face of the second crossbeam 11.

[0031] That is, as shown below, the elastic support mechanism 36 and the support mechanism C62 have the same structure; as Figure 8 The support mechanism C62 includes a base B620, with a blind hole 621 on the end face of the base B620. A movable column 623 that moves up and down along the inner wall of the blind hole 621 is connected to the bottom side of the blind hole 621 by a spring 622. An abutment 625 is provided at the end of the movable column 623, and a rectangular hole 624 is provided on the movable column 623. Through holes A627 and B626 are respectively provided on the opposite side walls of the base B620. Through holes A627 and B626 are concentric. Through holes A627 and B626 are both connected to the blind hole 621. A fixing sleeve 629 with a threaded blind hole 630 on the end face is installed in the through hole B626. It also includes a T-shaped limiting rod A628, one end of which passes through the through hole A627 and the rectangular hole 624 in sequence, and the end is threaded to the threaded blind hole 630.

[0032] Based on the above configuration, in order to adjust the position of the forklift steering axle 1 in the first direction during use, an adjustment component B7 is provided on the upper surface of the base plate 2 located between the rotary clamping component B8 and the rotary clamping component C6; as Figure 9-10 The adjustment component B7 includes a base C70, one end of which has a rectangular groove 71, and one side of which has an opening 721. The other end of the base C70 has a mounting groove 72 that communicates with the opening 721. A mounting plate 720 is installed in the mounting groove 72, and a threaded bolt B722 is connected to the mounting plate 720. The end of the bolt B722 is rotatably connected to a drive block B73 with an isosceles trapezoidal rotating section. Guide grooves B711 are provided on both sides of the rectangular groove 71 along its length. The component also includes two movable blocks 74 that slide along the length of the rectangular groove 71. Guide sliders that slide along the guide grooves B711 are provided on both sides of the movable blocks 74. A connecting seat 75 is provided at the end of the movable block 74, and a stop rod 76 is fixed to the connecting seat 75. A limiting plate 731 is provided in the middle of the rectangular groove 71. Each of the opposite end faces of the two movable blocks 74 has an inclined surface that cooperates with the drive block B73.

[0033] The working principle of the adjustment component B7 is as follows: The operator tightens the bolt B722, which rotates in the thread of the mounting plate 720, generating a downward linear feed motion that pushes the drive block B73, which has an isosceles trapezoidal cross-section, to move. The two inclined surfaces of the drive block B73 contact the inclined surfaces of the two movable blocks 74 at their opposite ends, and the inclined surfaces of the movable blocks 74 generate a thrust, forcing the two movable blocks 74 to slide in opposite directions along the guide groove B711. The two movable blocks 74 move outward synchronously, driving the connecting seat 75 and the abutment 76 at their ends to move together, so that the two abutment 76 extend outward from the center position until they firmly abut against the inner walls of the two sides of the shoulder 15 in the middle of the forklift steering axle 1. The bolt B722 is then tightened, which facilitates the control of the forklift steering axle 1 to move to one side in the first direction, thus completing the positioning of the forklift steering axle 1 in the first direction.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic rotary positioning fixture for machining forklift steering axles, characterized in that: Includes a base plate (2) and two positioning components (3) set at both ends of the base plate; Two adjustment components A (4) are provided on the base plate (2) located between the two positioning components (3); Two rotary clamping components A (5) are provided on one edge of the base plate (2), and a rotary clamping component B (8) and a rotary clamping component C (6) are provided on the other edge of the base plate (2).

2. The automatic rotary positioning fixture for machining forklift steering axles according to claim 1, characterized in that, The forklift steering axle includes a first crossbeam (10) and a second crossbeam (11) arranged symmetrically, with a connecting part (13) between the first crossbeam (10) and the second crossbeam (11); The first crossbeam (10), the second crossbeam (11) and the connecting part (13) constitute the main body of the steering bridge. The middle part of the main body of the steering bridge is provided with a shoulder (15), and both ends of the shoulder (15) are provided with mounting shafts (16). Pin seats (12) are provided at both ends of the first crossbeam (10) and the second crossbeam (11); Through holes (14) are provided on the connecting parts (13) on both sides of the shoulder (15).

3. The automatic rotary positioning fixture for machining forklift steering axles according to claim 2, characterized in that, The two adjustment components A (4) respectively penetrate the two through holes (14); The adjustment component A (4) includes a base A (41) with a through hole (14), and a through hole C (42) is provided on one side of the base A (41); a groove (420) is provided on the bottom side of the through hole C (42), and a threaded hole for a threaded bolt A (45) is provided on the top of the through hole C (42); The two side walls of the through hole C (42) are slidably provided with top blocks A (43) along their axial direction, and the outer wall of the end of the top block A (43) is provided with an abutment part A (431). The inner wall surface of the top block A (43) is provided with a T-shaped guide groove (44), and also includes a drive block A (46) with an isosceles trapezoidal cross section. The two ends of the drive block A (46) are respectively provided with T-shaped guide sliders that are inserted into the T-shaped guide groove (44). The through hole C (42) has vertical guide grooves A (47) on both sides, and the bottom end of the guide grooves A (47) extends into the groove (420); The drive block A (46) is provided with guide sliders that slide along the guide groove A (47) on both sides, and the end of the bolt A (45) is rotatably connected to the top of the drive block A (46).

4. The automatic rotary positioning fixture for machining forklift steering axles according to claim 2, characterized in that, One of the adjustment components A (4) is provided with a rotary clamping component A (5) and a rotary clamping component C (6) on both sides respectively, and the other adjustment component A (4) is provided with a rotary clamping component A (5) and a rotary clamping component B (8) on both sides respectively. The rotary clamping assembly A (5) includes a rotary clamping mechanism A and a support mechanism A (54), wherein the support mechanism A (54) is located between the adjusting assembly A (4) and the rotary clamping mechanism A; The rotary clamping assembly B (8) includes a rotary clamping mechanism B (81) and a support mechanism B (82), wherein the support mechanism B (82) is located between the adjustment assembly A (4) and the rotary clamping mechanism B (81); The rotary clamping assembly C (6) includes a rotary clamping mechanism C (61) and a support mechanism C (62), wherein the support mechanism C (62) is located between the adjustment assembly A (4) and the rotary clamping mechanism C (61).

5. The automatic rotary positioning fixture for machining forklift steering axles according to claim 4, characterized in that, The rotary pressing mechanism A includes a rotary cylinder (50) on the upper surface of the base plate (2) and a connecting sleeve (51) provided at the output end of the rotary cylinder (50). An inner guide sleeve is provided inside the connecting sleeve (51), and a rotary arm (52) is connected to the end of the inner guide sleeve. A pressing head A (53) is provided at the end of the rotary arm (52). A T-shaped limiting rod B (55) with its bottom end connected to the connecting sleeve (51) is provided through one end of the rotary arm (52), and a return spring is connected between the inner guide sleeve and the connecting sleeve (51). The rotary clamping mechanism A, rotary clamping mechanism B (81) and rotary clamping mechanism C (61) have the same structure; The end face of the pressing head A (53) of the rotary pressing mechanism B (81) and the rotary pressing mechanism C (61) is a planar structure; The end face of the pressing head A (53) of the rotary pressing mechanism A is a spherical structure.

6. The automatic rotary positioning fixture for machining forklift steering axles according to claim 4, characterized in that, The supporting mechanism A (54) and the supporting mechanism B (82) have the same structure; The support mechanism A (54) includes a support (540), and a protrusion (541) is provided at the end of the support (540). Several truncated pyramidal / conical copper pressure blocks (542) are evenly distributed on the protrusion (541).

7. An automatic rotary positioning fixture for machining forklift steering axles according to any one of claims 4-6, characterized in that, The positioning component (3) includes a base (31), a boss (32) is provided on the upper surface of the base (31), and an arc surface (33) is provided on the inner wall of the boss (32) to cooperate with the end of the connecting part (13); mounting holes are provided on both sides of the end face of the boss (32), a telescopic cylinder is installed in the mounting holes, a clamping arm (35) is provided at the end of the telescopic cylinder, and a clamping head B (350) with a spherical structure is provided on the bottom side of the end of the clamping arm (35). The bottom side of the clamping arm (35) is provided with a guide rod (352), and the end face of the boss (32) is provided with a guide hole that cooperates with the guide rod (352).

8. The automatic rotary positioning fixture for machining forklift steering axles according to claim 7, characterized in that, The base (31) is provided with elastic support mechanisms (36) at both ends, and the elastic support mechanism (36) and the support mechanism C (62) have the same structure. The support mechanism C (62) includes a base B (620), a blind hole (621) is opened on the end face of the base B (620), and a movable column (623) that moves up and down along the inner wall of the blind hole (621) is connected to the bottom side of the blind hole (621) by a spring (622). An abutment (625) is provided at the end of the movable column (623), and a rectangular hole (624) is provided on the movable column (623). The base B (620) has through holes A (627) and through holes B (626) on its opposite side walls, and the through holes A (627) and through holes B (626) are concentric. Both the through hole A (627) and the through hole B (626) are connected to the blind hole (621); a fixing sleeve (629) with a threaded blind hole (630) on the end face is installed in the through hole B (626). It also includes a T-shaped limiting rod A (628) that passes through the through hole A (627) and the rectangular hole (624) in sequence, and is threaded to the threaded blind hole (630) at the end.

9. The automatic rotary positioning fixture for machining forklift steering axles according to claim 1, characterized in that, An adjustment component B (7) is provided on the upper surface of the base plate (2) located between the rotary clamping component B (8) and the rotary clamping component C (6); The adjustment component B (7) includes a base C (70), one end of which is provided with a rectangular groove (71), one side of which is provided with an opening (721), and the other end face of the base C (70) is provided with an installation groove (72) that communicates with the opening (721). An installation plate (720) is installed in the installation groove (72), and a threaded bolt B (722) is connected to the installation plate (720). The end of the bolt B (722) is rotatably connected to a drive block B (73) with a rotating cross section in the shape of an isosceles trapezoid. The rectangular groove (71) has guide grooves B (711) on both sides along the length direction, and also includes two movable blocks (74) that slide along the length direction of the rectangular groove (71). The movable blocks (74) are respectively provided with guide sliders that slide along the guide grooves B (711) on both sides. The end of the movable block (74) is provided with a connecting seat (75), and the connecting seat (75) is fixed with a stop rod (76). A limiting plate (731) is provided in the middle of the rectangular groove (71); each of the two movable blocks (74) has an inclined surface that cooperates with the driving block B (73) on its opposite end face.

10. An automatic rotary positioning fixture for machining forklift steering axles according to claim 1, characterized in that, The base plate (2) is mounted on a flipping mechanism (9).

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