Fixing tool for automobile drive axle production

Abstract

The invention relates to the technical field of automobile production, and discloses an automobile drive axle production fixing tool which comprises a double-sliding-rail part and two supporting frame assemblies installed on the double-sliding-rail part in a sliding mode, and a side pushing positioning assembly is arranged at the top of each supporting frame assembly and used for bearing and fastening a drive axle body. The side pushing positioning assembly comprises a bearing plate and two side pushing execution components, the bearing plate is fastened with the positioning convex lugs of the drive axle through bolts, and the side pushing execution components are rotationally connected to the two sides of the bearing plate and are in linkage with the side pushing driving assembly on the double-sliding-rail part. A center plate and a synchronous connecting assembly are arranged in the middle of the double-sliding-rail part, it is guaranteed that the two supporting frame assemblies synchronously and reversely move, and symmetrical positioning is kept. According to the tool, the axial position of the drive axle is automatically corrected through the lateral pushing execution component, rapid centering is achieved, meanwhile, the stability is enhanced through bolt fastening, and displacement or disengagement during machining is effectively prevented. According to the design, the adjusting process is simplified, the clamping precision and efficiency are improved, and the fixing requirements of drive axles of different sizes are met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile production, in particular to a fixed tool for producing an automobile drive axle. Background Art

[0002] The automobile drive axle is an essential component of the automobile. Its basic function is to increase the torque transmitted by the drive shaft or transmission and reasonably distribute the power to the left and right drive wheels. In addition, it also withstands the vertical force, longitudinal force and lateral force acting between the road surface and the frame or body. During the production of automotive drive axles, fixtures must adapt to the dimensional variations of different drive axles and ensure positioning accuracy and stability during processing. Traditional fixtures often rely on manual adjustment or single fixtures, which can lead to cumbersome adjustment, poor symmetry, and inaccurate positioning, which can easily lead to processing errors or workpiece fall-off. Furthermore, existing technologies lack automatic centering mechanisms and rely on manual calibration, resulting in low efficiency. Therefore, there is an urgent need for a drive axle production fixture that can automatically adjust, synchronously position, and securely fixate to meet the needs of high-precision and high-efficiency processing. Summary of the Invention

[0003] The purpose of the present invention is to provide a fixed tool for producing an automobile drive axle to solve the technical problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention provides a fixed tool for producing an automobile drive axle, comprising a double slide rail portion and two support frame assemblies slidably mounted on the double slide rail portion, a side push positioning assembly is provided on the top of each support frame assembly, and the side push positioning assembly is used to support and fasten the drive axle body; the side push positioning assembly comprises a supporting plate and two side push execution components, the two sides of the supporting plate can be slidably arranged on the top of the support frame assembly, the sides of the supporting plate can also be fastened together with the positioning lugs on the drive axle body by fastening bolts, and the two side push execution components are respectively rotated in a symmetrical manner on the supporting plate On both sides of the support plate, the lower end of the side push execution component extends to the lower side of the supporting plate and is connected to the side push driving assembly provided on the double slide rail part. The side push execution component rotating around the connection with the supporting plate can act on the positioning load-bearing part provided on the drive bridge body to make the supporting plate slide relative to the top of the support frame assembly; a center plate is also provided in the middle position of the double slide rail part and a synchronous connection assembly is provided on the center plate, and both ends of the synchronous connection assembly are respectively connected to the bottom of the two support frame assemblies. The synchronous connection assembly can keep the two support frame assemblies synchronized and in opposite directions when moving along the double slide rail part.

[0005] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions: In an optional solution: the support frame assembly includes a chassis part and two support frame parts, the chassis part is slidably set on the double slide rail part, the bottom of the chassis part is connected to one end of the synchronous connection assembly, the two support frame parts are symmetrically arranged on the upper end surface of the chassis part, the two hollow connection parts are slidably connected to the two sides of the supporting plate, and a blocking assembly is also provided on one side of the chassis part, and the blocking assembly is used to fasten the side of the chassis part and the side of the double slide rail part together.

[0006] In an optional solution: the top of the support frame has a supporting slide rail portion, and both sides of the supporting plate are provided with hollow connecting portions, and the bottom surface of the hollow connecting portion has a seat portion that can be slid onto the supporting slide rail portion; the hollow connecting portion has a plurality of equally spaced mounting holes, and the mounting holes pass through the hollow connecting portion.

[0007] In an optional solution: a side support is provided on the outer side of the hollow connecting portion, the side thrust execution component includes an upper support arm, a side thrust action block and a lower support arm, the upper support arm and the lower support arm are connected as a whole and are rotatably connected to the side support, the side thrust action block is provided at the end of the upper support arm away from the side support and the end face of the side thrust action block facing the other side thrust positioning assembly is an inclined surface; a side thrust transmission part is provided at the bottom of the supporting plate, the end of the lower support arm away from the side support extends to the side thrust transmission part and is connected to it; the side thrust transmission part is connected to the side thrust drive assembly.

[0008] In an optional scheme: the side push drive assembly includes an end shaft part and a long gear shaft, both ends of the end shaft part are rotatably arranged on the double slide rail part through the support part, the long gear shaft is arranged on the end shaft part and one end of the end shaft part has a power end; the side push transmission part includes a lower slide rod, a movable block and a vertical rack, one end of the lower slide rod is fixed to the bottom surface of the supporting plate, the movable block can be slidably arranged on the lower slide rod, the movable block is connected to the ends of the two lower support arms away from the side support, the movable block is connected to the bottom surface of the supporting plate through an outward rotation spring, one end of the vertical rack is fixedly connected to the side surface of the movable block and the other end is meshed with the long gear shaft.

[0009] In an optional solution, the end of the lower support arm away from the side support has a frame rod, the frame rod extends to the side of the movable block, and the outer wall of the movable block has a shifting column member and the shifting column member passes through the frame rod.

[0010] In an optional scheme: the side wall of the double sliding rail part has a plurality of equally spaced anti-shift protrusions, and a recess is formed between two adjacent anti-shift protrusions, and the anti-shift assembly includes an anti-shift shaft, an anti-shift bracket, an anti-shift pressure plate and at least one anti-shift elastic telescopic rod, the anti-shift shaft is rotatably arranged on the side of the chassis part, one side of the anti-shift bracket is connected to the anti-shift shaft and the other end is connected to the anti-shift pressure plate, and the end face of the anti-shift pressure plate facing the side wall of the double sliding rail part has an anti-shift protrusion; the end of the anti-shift bracket is provided with a side connecting column, one end of the anti-shift elastic telescopic rod is hinged to the side wall of the support frame part and the other end is hinged to the side connecting column, and the hinge point of the anti-shift elastic telescopic rod and the support frame part is at the same height as the anti-shift shaft.

[0011] In an optional scheme: the synchronous connection component includes multiple cross rod groups, which are evenly spaced and connected to each other. The cross rod groups include a central node and two rotating rods. The two rotating rods cross each other and are rotationally connected through the central node at the middle position. The central nodes of the cross rod groups at the two ends are rotationally connected to the bottom of the chassis, and the central node of the cross rod group in the middle is rotationally connected to the center plate; the ends of the rotating rods of two adjacent cross rod groups are hinged.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects: In the automobile drive axle production fixing tool provided by the present invention, the drive axle body is automatically pushed to the center position through the cooperation of the side push execution component and the side push drive component, thereby achieving precise axial alignment and reducing manual intervention; the synchronous connection component ensures that the two support frame components move in opposite directions and synchronously, always maintaining a symmetrical distribution, and adapting to the rapid positioning of drive axles of different lengths; the side push execution component limits the axial movement of the positioning load-bearing part, and combined with the bolt-tightening positioning lug, effectively prevents the workpiece from offsetting or falling off during processing; the integrated slide rail, support frame and drive mechanism simplify the operating process, improve the clamping efficiency, and are suitable for mass production; the adjustable design is adaptable to a variety of drive axle sizes, reduces the tooling replacement cost, and improves equipment utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of the installation structure of a vehicle drive axle provided by an embodiment of the present invention; Figure 2 for Figure 1 The overall structural diagram of the fixed tooling is shown; Figure 3 for Figure 2 The schematic diagram of the connection between the support frame assembly and the side push positioning assembly shown; Figure 4 It is a structural schematic diagram of the support assembly of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the side push positioning assembly of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a shift-blocking assembly provided in yet another embodiment of the present invention.

[0015] Reference numerals: Drive axle body 100, positioning bearing part 110, positioning lug 120, double slide rail part 200, blocking protrusion 210, support frame assembly 300, chassis part 310, support frame part 320, support slide rail part 330, synchronous connection assembly 400, rotating rod 410, central node 420, central plate 500, side thrust drive assembly 600, end shaft part 610, long gear shaft 620, power end 630, support part 640, side thrust positioning assembly 700, support plate 710, side thrust execution component 720, upper support arm 721, side thrust block 722, lower support arm 723, frame rod 724, hollow connecting part 730, mounting hole 740, seat part 750, side support 760, side thrust transmission part 770, lower sliding rod 771, outward rotation spring 772, movable block 773, shift column part 774, vertical rack 775, anti-shift assembly 800, anti-shift rotating shaft 810, anti-shift bracket 820, anti-shift pressure plate 830, side connecting column 840, anti-shift elastic telescopic rod 850, anti-shift protrusion 860. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0019] The present invention will be further explained below with reference to specific embodiments.

[0020] The left, right, up, and down positions of the components shown in the accompanying drawings are merely one arrangement, and the specific positions are set according to specific needs.

[0021] In one embodiment, Figure 1-Figure 3 As shown, a fixed tool for producing an automobile drive axle includes a double slide rail portion 200 and two support frame assemblies 300 slidably mounted on the double slide rail portion 200. A side push positioning assembly 700 is provided on the top of each support frame assembly 300. The side push positioning assembly 700 is used to support and fasten the drive axle body 100. The side push positioning assembly 700 includes a supporting plate 710 and two side push execution components 720. The two sides of the supporting plate 710 are slidably arranged on the top of the support frame assembly 300. The sides of the supporting plate 710 can also be fastened together with the positioning lugs 120 on the drive axle body 100 by fastening bolts. The two side push execution components 720 are respectively and symmetrically rotated on the two side portions of the supporting plate 710. The lower end of the side-push actuator 720 extends to the lower side of the supporting plate 710 and is connected to the side-push drive assembly 600 provided on the double-slide rail portion 200. The side-push actuator 720 rotating around the connection with the supporting plate 710 can act on the positioning load-bearing portion 110 provided on the drive bridge body 100 to make the supporting plate 710 slide relative to the top of the support frame assembly 300; a center plate 500 is also provided in the middle position of the double-slide rail portion 200 and a synchronous connection assembly 400 is provided on the center plate 500, and the two ends of the synchronous connection assembly 400 are respectively connected to the bottom of the two support frame assemblies 300, and the synchronous connection assembly 400 can keep the two support frame assemblies 300 synchronized and in opposite directions when moving along the double-slide rail portion 200.

[0022] In the embodiment of the present invention, the staff roughly adjusts the distance between the two support assemblies 300 according to the length of the drive bridge body 100 so that the support area of the drive bridge body 100 falls on the supporting plate 710; when the two support assemblies 300 are adjusted, it is only necessary to move one of the support assemblies 300 along the double slide rail portion 200. Since the synchronous connection assembly 400 is provided on the center plate 500 and is located in the middle position of the double slide rail portion 200, the restriction of the synchronous connection assembly 400 on the two support assemblies 300 can keep the two support assemblies 300 The two support bracket assemblies 300 are moved synchronously and in opposite directions, that is, the two support bracket assemblies 300 are respectively moved closer to or away from the center plate 500 along the double slide rail part 200 to keep the center position of the two support bracket assemblies 300 at the midpoint of the double slide rail part 200, and the positions of the two side push positioning assemblies 700 on the support bracket assemblies 300 are adjusted and tightened. The two side push positioning assemblies 700 are always kept in a position symmetrical to the midpoint of the double slide rail part 200; the staff lifts the drive axle body 100 through the lifting device adapted to the device and places it on the side push positioning assembly 700. At this time, the side push The two side-pushing actuators 720 in the positioning assembly 700 are in the open state, the supporting surface of the drive bridge body 100 contacts the supporting plate 710, the side-pushing driving assembly 600 works and drives the two side-pushing actuators 720 in the side-pushing positioning assembly 700, the two side-pushing actuators 720 rotate around the connection between them and the supporting plate 710, and the top of the side-pushing actuator 720 acts on the positioning bearing part 110 on the drive bridge body 100. One of the positioning bearing parts 110 is subjected to the side push, and the entire drive bridge body 100 moves axially until the drive bridge body The two positioning force-bearing parts 110 of 100 are respectively in contact with the side-thrust execution parts 720 in the two side-thrust positioning assemblies 700. At this time, the middle position of the drive bridge body 100 is opposite to the center plate 500 to achieve automatic positioning. The two sets of side-thrust execution parts 720 can limit the axial movement of the positioning force-bearing part 110 from both ends. At the same time, the positioning lug 120 can be fastened together with the supporting plate 710 by tightening bolts to ensure the firmness of the installation of the positioning force-bearing part 110 and avoid the drive bridge body 100 from position displacement or falling off from the side-thrust positioning assembly 700 during processing.

[0023] In one embodiment, Figure 1-Figure 4As shown, the support frame assembly 300 includes a chassis portion 310 and two support frame portions 320, the chassis portion 310 can be slidably arranged on the double slide rail portion 200, the bottom of the chassis portion 310 is connected to one end of the synchronous connection assembly 400, the two support frame portions 320 are symmetrically arranged on the upper end surface of the chassis portion 310, the two hollow connection portions 730 are slidably connected to the two sides of the supporting plate 710, and a blocking assembly 800 is further provided on one side of the chassis portion 310, and the blocking assembly 800 is used to fasten the side of the chassis portion 310 to the side of the double slide rail portion 200; in this embodiment of the present invention, The two side-thrust actuators 720 play the role of supporting the side-thrust actuators 720, and further support the drive bridge body 100; the supporting plate 710 can slide on the chassis part 310, and the distance between the two supporting plates 710 can be fine-tuned to ensure that the supporting parts of the drive bridge body 100 can be placed on the two supporting plates 710 respectively; after the two support frame assemblies 300 are adjusted in position, the chassis part 310 and the side of the double slide rail part 200 can be fastened together through the blocking assembly 800 to limit the movement of the two support frame assemblies 300 on the double slide rail part 200, thereby ensuring the stability of the support.

[0024] In one embodiment, Figure 1-3 As shown, the top of the support frame portion 320 has a supporting slide rail portion 330, and both sides of the supporting plate 710 are provided with a hollow connecting portion 730, and the bottom surface of the hollow connecting portion 730 has a seat member 750 that can be slid onto the supporting slide rail portion 330; the hollow connecting portion 730 has a plurality of equally spaced mounting holes 740, and the mounting holes 740 pass through the hollow connecting portion 730; in the embodiment of the present invention, the seat member 750 can be fastened to a specific position of the hollow connecting portion 730 by fastening bolts and the mounting holes 740, and the mounting holes 740 can be aligned with the positioning lugs 120 and fastened by bolts to achieve the firmness of the drive axle body 100 after installation.

[0025] In one embodiment, Figure 1-Figure 5As shown, a side support 760 is provided on the outer side of the hollow connecting portion 730, and the side push execution component 720 includes an upper support arm 721, a side push action block 722 and a lower support arm 723. The upper support arm 721 and the lower support arm 723 are connected as a whole and are rotatably connected to the side support 760. The side push action block 722 is provided at the end of the upper support arm 721 away from the side support 760, and the end surface of the side push action block 722 facing the other side push positioning assembly 700 is an inclined surface; the bottom of the supporting plate 710 is provided with a side push transmission part 770, and the lower support The end of the arm 723 away from the side support 760 extends to the side thrust transmission part 770 and is connected to it; the side thrust transmission part 770 is connected to the side thrust drive assembly 600; in the embodiment of the present invention, the side thrust drive assembly 600 acts on the end of the lower arm 723 away from the side support 760 through the side thrust transmission part 770, so that the upper arm 721 rotates around the side support 760, and then uses the inclined surface of the side thrust action block 722 to push the positioning force-bearing part 110 sideways, so that the drive bridge body 100 moves axially and then automatically positions.

[0026] In one embodiment, Figure 1-Figure 5As shown, the side push drive assembly 600 includes an end shaft portion 610 and a long gear shaft 620, both ends of the end shaft portion 610 are rotatably arranged on the double slide rail portion 200 through a support portion 640, the long gear shaft 620 is arranged on the end shaft portion 610 and one end of the end shaft portion 610 has a power end 630; the side push transmission portion 770 includes a lower slide rod 771 and a movable block 773 and a vertical rack 775, one end of the lower slide rod 771 is fixed to the bottom surface of the supporting plate 710, the movable block 773 and the vertical rack 775 The movable block 773 is slidably arranged on the sliding rod 771. The movable block 773 is connected to the ends of the two lower support arms 723 away from the side support 760. The movable block 773 is connected to the bottom surface of the supporting plate 710 through the outward rotation spring 772. One end of the vertical rack 775 is fixedly connected to the side of the movable block 773 and the other end is meshed with the long gear shaft 620. In this embodiment of the present invention, the vertical rack 775 can move along the axis of the long gear shaft 620. Therefore, when the support assembly 3 is adjusted, 00 and the side push positioning assembly 700 are in the position, the vertical rack 775 is always in meshing state with the long gear shaft 620; the staff acts on the end shaft portion 610 through the power end 630 to make it rotate, and the long gear shaft 620 rotates with the end shaft portion 610, and through the meshing with the vertical rack 775, the movable block 773 moves on the lower slide rod 771, and the movable block 773 drives the upper support arm 721 to rotate around the side support seat 760 through the lower support arm 723, thereby pushing the action block 773 to rotate around the side support seat 760. 22 can be rotated to the upper side of the supporting plate 710 and use its own inclined surface to push the positioning and bearing part 110 on the drive axle body 100; in the initial state, due to the elastic force of the outward rotation spring 772, the movable block 773 is always in a specific position on the lower slide bar 771, and the outward rotation spring 772 remains located at the side and lower position of the supporting plate 710, avoiding the blocking phenomenon between the side pushing action block 722 and the drive axle body 100 when the drive axle body 100 is placed on the supporting plate 710.

[0027] In one embodiment, Figure 1-Figure 5 As shown, the end of the lower arm 723 away from the side support 760 has a frame rod 724, and the frame rod 724 extends to the side of the movable block 773. The outer wall of the movable block 773 has a shifting column 774, and the shifting column 774 passes through the frame rod 724. In the embodiment of the present invention, when the movable block 773 moves vertically on the lower slide bar 771, the shifting column 774 moves with the movable block 773 and uses its own movement in the frame rod 724 to shift the frame rod 724. The frame rod 724 is subjected to force and acts on the lower arm 723 to make it rotate around the side support 760.

[0028] In one embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown, the side wall of the double slide rail portion 200 has a plurality of equally spaced anti-shift protrusions 210, and a recessed portion is formed between two adjacent anti-shift protrusions 210. The anti-shift assembly 800 includes an anti-shift shaft 810, an anti-shift bracket 820, an anti-shift pressure plate 830 and at least one anti-shift elastic telescopic rod 850. The anti-shift shaft 810 is rotatably arranged on the side of the chassis portion 310, and the anti-shift bracket 820 is connected to the anti-shift shaft 810 on one side and the other side. One end is connected to the anti-shift pressure plate 830, and the end surface of the anti-shift pressure plate 830 facing the side wall of the double slide rail part 200 has an anti-shift ridge 860; the end of the anti-shift bracket 820 is provided with a side connecting column 840, and one end of the anti-shift elastic telescopic rod 850 is hinged to the side wall of the support frame part 320 and the other end is hinged to the side connecting column 840, and the hinge point of the anti-shift elastic telescopic rod 850 and the support frame part 320 is at the same height as the anti-shift shaft 810; the embodiment of the present invention In the process, the staff drives the anti-shift shaft 810 to rotate and drives the anti-shift bracket 820 to rotate, so that the anti-shift bracket 820 and the anti-shift pressure plate 830 can be rotated to the top or bottom of the anti-shift shaft 810. When the anti-shift pressure plate 830 is below the anti-shift shaft 810, the anti-shift elastic telescopic rod 850 is in a stretched state, and its tightened elastic force always pulls the side connecting column 840, so that the anti-shift pressure plate 830 is tightly attached to the outer wall of the double slide rail part 200, and the anti-shift convex strip 8 60 is inserted into the recessed portion between two adjacent anti-movement protrusions 210, thereby limiting the movement of the support frame assembly 300 relative to the double slide rail portion 200; when the anti-movement pressure plate 830 is on the upper side of the anti-movement shaft 810, the anti-movement elastic telescopic rod 850 is still in a stretched state, and its tightened elastic force pulls the side connecting column 840 to limit the anti-movement pressure plate 830 from rotating to below the anti-movement shaft 810, thereby ensuring that the support frame assembly 300 can move unobstructed on the double slide rail portion 200.

[0029] In one embodiment, Figure 1-Figure 4 As shown, the synchronous connection component 400 includes a plurality of cross rod groups, and the plurality of cross rod groups are equidistantly distributed and connected to each other, and the cross rod group includes a central node 420 and two rotating rods 410, and the two rotating rods 410 cross each other and are rotationally connected through the central node 420 at the middle position, and the central node 420 in the cross rod groups at the two ends is rotationally connected to the bottom of the chassis 310, and the central node 420 in the cross rod group in the middle is rotationally connected to the center plate 500; the ends of the rotating rods 410 of the two adjacent cross rod groups are hinged; in the embodiment of the present invention, the central node 420 in the middle cross rod group will not move, and when one of the support frame assemblies 300 moves, the rotating rods 410 in the plurality of cross rod groups are used to rotate around the central node 420 to transmit the driving force, so that the two support frame assemblies 300 move synchronously and rotate in opposite directions; using the cross rod group as a connecting transmission member can increase the moving stroke without increasing the size of the entire mechanism.

[0030] The above embodiment provides a fixed tooling for producing an automobile drive axle, and its working principle is as follows: 1. Initial adjustment phase Bracing assembly 300 synchronous adjustment Depending on the length of the drive axle body 100, the operator manually moves one of the support assemblies 300 along the dual-slide rail portion 200. Because the synchronous connection assembly 400 is fixed to the midpoint of the dual-slide rail portion 200 via the center plate 500, the two support assemblies 300 move synchronously and in opposite directions through the linkage of the cross-bar assembly rotating rod 410 and the center node 420, ensuring that they are always symmetrical about the midpoint of the dual-slide rail portion, thus accommodating drive axle bodies 100 of different lengths.

[0031] Blocking assembly 800 locked position After the adjustment is completed, the anti-shift pressure plate 830 of the anti-shift assembly 800 is flipped to the bottom of the anti-shift shaft 810. The elastic force of the anti-shift elastic telescopic rod 850 forces the anti-shift protrusion 860 to be stuck in the recessed part of the side wall of the double sliding rail part 200, locking the position of the chassis part 310 to prevent the support frame assembly 300 from sliding during processing.

[0032] 2. Drive axle positioning and fixing stage Hoisting and initial placement The drive axle body 100 is placed on the supporting plates 710 on both sides through a hoisting device. At this time, the side push actuator 720 is in an open state and is acted upon by the outward rotation spring 772 , and the support surface of the drive axle contacts the supporting plates 710 .

[0033] Automatic positioning of side thrusters Power input: The power end 630 rotates the end shaft 610 to drive the long gear shaft 620 to rotate.

[0034] Transmission process: the long gear shaft 620 drives the vertical rack 775 to move downward, pushing the movable block 773 to slide along the lower slide rod 771, and the shifting column member 774 drives the frame rod member 724 to make the lower support arm 723 rotate around the side support 760.

[0035] Execution action: The side thrust block 722 of the upper arm 721 contacts the positioning and load-bearing part 110 of the drive axle on the inclined surface, applying a lateral thrust, and the drive axle body 100 moves axially until the positioning and load-bearing parts 110 on both sides are in contact with the side thrust execution component 720, realizing automatic centering and positioning of the midpoint of the drive axle body 100 and aligning it with the center plate 500.

[0036] Final tightening Fastening bolts are used to pass through the mounting holes 740 of the supporting plate 710 and connect to the positioning lugs 120 of the drive axle body 100 to ensure that the drive axle body 100 has no risk of displacement or falling off during processing.

[0037] 3. Collaboration among key institutions Synchronous connection component 400 The cross-rod structure ensures symmetrical movement of the two support frame assemblies 300, avoids manual adjustment errors, and improves positioning efficiency.

[0038] Side thrust drive assembly 600 and side thrust actuator 720 The rack-and-pinion transmission converts the rotational motion into the swing of the side thrust actuator 720, and realizes the axial fine adjustment of the drive axle through the inclined surface contact, thereby automatically completing the precise positioning.

[0039] Blocking assembly 800 The elastic locking design takes into account both adjustment flexibility and processing stability, and the cooperation between the anti-shift ridge 860 and the anti-shift protrusion 210 provides reliable locking.

[0040] 4. Reset and reuse After the processing is completed, loosen the fastening bolts, reverse the power end 630 to reset the side push actuator 720 and assist the rebound with the outward rotation spring 772, release the lock of the blocking assembly 800, and adjust the position of the support assembly to adapt to the next workpiece.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixed tool for producing an automobile drive axle, comprising a double slide rail portion (200) and two support bracket assemblies (300) slidably mounted on the double slide rail portion (200), wherein a side push positioning assembly (700) is provided on the top of each support bracket assembly (300), and the side push positioning assembly (700) is used to support and fasten the drive axle body (100), and is characterized in that: The side-thrust positioning assembly (700) comprises a supporting plate (710) and two side-thrust execution components (720); The two sides of the support plate (710) can be slidably arranged on the top of the support frame assembly (300), and the sides of the support plate (710) can also be fastened together with the positioning lugs (120) on the drive axle body (100) by fastening bolts; The two side push actuators (720) are respectively rotated in a symmetrical manner on the two side portions of the supporting plate (710), the lower ends of the side push actuators (720) extend to the lower side of the supporting plate (710) and are connected to the side push driving assembly (600) provided on the double slide rail portion (200), and the side push actuators (720) rotated around the connection between the side push actuators (720) and the supporting plate (710) can act on the positioning bearing portion (110) provided on the driving bridge body (100) to make the supporting plate (710) slide relative to the top of the support frame assembly (300); A center plate (500) is further provided in the middle of the double slide rail portion (200), and a synchronous connection component (400) is provided on the center plate (500). Both ends of the synchronous connection component (400) are respectively connected to the bottoms of the two support frame components (300). The synchronous connection component (400) enables the two support frame components (300) to maintain synchronization and move in opposite directions when moving along the double slide rail portion (200).

2. The automobile drive axle production fixture according to claim 1, characterized in that: The support frame assembly (300) comprises a chassis portion (310) and two support frame portions (320); The chassis portion (310) is slidably arranged on the double slide rail portion (200), the bottom of the chassis portion (310) is connected to one end of the synchronous connection component (400), the two support portions (320) are symmetrically arranged on the upper end surface of the chassis portion (310), and the two hollow connection portions (730) are slidably connected to the two sides of the supporting plate (710); A shift-blocking assembly (800) is further provided on one side of the chassis portion (310), and the shift-blocking assembly (800) is used to fasten the side of the chassis portion (310) and the side of the double-slide rail portion (200) together.

3. The automobile drive axle production fixture according to claim 2, characterized in that: The top of the support frame (320) is provided with a supporting rail portion (330), and both sides of the supporting plate (710) are provided with hollow connecting portions (730), and the bottom surface of the hollow connecting portion (730) is provided with a seat portion (750) that can be slidably buckled onto the supporting rail portion (330); The hollow connecting portion (730) has a plurality of mounting holes (740) distributed at equal intervals, and the mounting holes (740) pass through the hollow connecting portion (730).

4. The automobile drive axle production fixture according to claim 3, characterized in that: A side support seat (760) is provided on the outer side of the hollow connecting portion (730), and the side thrust execution component (720) includes an upper support arm (721), a side thrust action block (722), and a lower support arm (723); The upper support arm (721) and the lower support arm (723) are connected as one body and are rotatably connected to the side support seat (760); the side thrust action block (722) is provided at the end of the upper support arm (721) away from the side support seat (760); and the end surface of the side thrust action block (722) facing the other side thrust positioning assembly (700) is an inclined surface; A side thrust transmission part (770) is provided at the bottom of the supporting plate (710); an end of the lower support arm (723) away from the side support seat (760) extends to the side thrust transmission part (770) and is connected thereto; the side thrust transmission part (770) is connected to the side thrust drive assembly (600).

5. The automobile drive axle production fixture according to claim 4, characterized in that: The side thrust drive assembly (600) comprises an end shaft portion (610) and a long gear shaft (620); both ends of the end shaft portion (610) are rotatably mounted on the double slide rail portion (200) via a support portion (640); the long gear shaft (620) is mounted on the end shaft portion (610), and one end of the end shaft portion (610) has a power end (630); The side thrust transmission part (770) includes a lower sliding rod (771), a movable block (773) and a vertical rack (775), one end of the lower sliding rod (771) is fixed to the bottom surface of the supporting plate (710), and the movable block (773) is slidably arranged on the lower sliding rod (771), and the movable block (773) is connected to the ends of the two lower support arms (723) away from the side support seat (760); The movable block (773) is connected to the bottom surface of the supporting plate (710) via an outward rotation spring (772), and one end of the vertical rack (775) is fixedly connected to the side surface of the movable block (773) and the other end is meshed with the long gear shaft (620).

6. The automobile drive axle production fixture according to claim 5, characterized in that: The end of the lower support arm (723) away from the side support seat (760) has a frame rod (724), and the frame rod (724) extends to the side of the movable block (773). The outer wall of the movable block (773) has a shifting column (774), and the shifting column (774) passes through the frame rod (724).

7. The automobile drive axle production fixture according to claim 2, characterized in that: The side wall of the double slide rail portion (200) is provided with a plurality of equally spaced blocking protrusions (210), a recess is formed between two adjacent blocking protrusions (210), and the blocking assembly (800) comprises a blocking rotating shaft (810), a blocking bracket (820), a blocking pressure plate (830), and at least one blocking elastic telescopic rod (850); The anti-shift shaft (810) is rotatably arranged on the side of the chassis portion (310), and the anti-shift bracket (820) is connected to the anti-shift shaft (810) on one side and connected to the anti-shift pressure plate (830) on the other end. The anti-shift pressure plate (830) has an anti-shift convex strip (860) on its end surface facing the side wall of the double slide rail portion (200); A side connecting column (840) is provided at the end of the anti-shift bracket (820), one end of the anti-shift elastic telescopic rod (850) is hinged to the side wall of the support frame (320) and the other end is hinged to the side connecting column (840), and the hinge point between the anti-shift elastic telescopic rod (850) and the support frame (320) is located at the same height as the anti-shift rotating shaft (810).

8. The automobile drive axle production fixture according to claim 2, characterized in that: The synchronous connection assembly (400) includes a plurality of cross-rod groups, which are evenly spaced and connected to each other, and the cross-rod group includes a central node (420) and two rotating rods (410); The two rotating rods (410) intersect with each other and are rotationally connected at the middle position through a central node (420). The central nodes (420) of the cross rod groups at the two ends are rotationally connected to the bottom of the chassis (310), and the central node (420) of the cross rod group at the middle is rotationally connected to the center plate (500). The ends of the rotating rod members (410) of two adjacent cross rod groups are hinged.

Images