Axle housing main pin hole machining tool capable of preventing cutting fluid from being accumulated

Abstract

The utility model belongs to the technical field of axle housings, and particularly relates to an axle housing main pin hole machining tool capable of preventing accumulation of cutting fluid. Fixed auxiliary supporting assemblies are installed at the left end and the right end of the top of a bottom plate in the tool respectively, two lead screw jacking assemblies are installed at the front end of the top of the bottom plate, two positioning assemblies are installed at the rear end of the top of the bottom plate, a movable auxiliary supporting assembly is installed at the top of the bottom plate, and the movable auxiliary supporting assembly is located between the two positioning assemblies. Two limiting columns are installed at the top of the bottom plate and used for interfering with an axle housing rear cover, the lead screw jacking assembly is movably provided with a lead screw, a jacking block is installed at the end of the lead screw, the positioning assembly is provided with a positioning plate, two positioning pins are installed on the positioning plate, the fixing auxiliary supporting assembly is movably provided with a pressing cross beam, and a pressing claw is installed at the lower end of the pressing cross beam. An auxiliary supporting tip is installed on the top of the movable auxiliary supporting assembly. The tool solves the problem that cutting fluid is accumulated in an inner cavity of the axle housing in the machining process, and the cleanliness of the axle housing is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of axle housings, and in particular relates to a tool for machining axle housing kingpin holes, which can prevent cutting fluid from accumulating. Background Art

[0002] The kingpin holes of the axle housing are located on both sides of the axle housing and are used to install the kingpin. The steering is installed on the kingpin, which is an important structure for the vehicle to steer flexibly. Through precise processing, the assembly accuracy can be improved, thereby ensuring the reliability of the vehicle's steering system.

[0003] At present, the conventional processing scheme for the kingpin hole of the bridge housing is to face the large flange of the bridge housing upward during processing, which causes a large amount of cutting fluid to accumulate in the inner cavity of the bridge housing during processing. The use of cutting fluid in the machining process can cool the tool and workpiece, reduce the thermal deformation caused by the machining process, and is of great significance to improving the machining accuracy and tool life. Therefore, cutting fluid is used during processing. Therefore, during the machining process, the inner cavity of the bridge housing faces upward, and the lower side is a closed structure, which will cause the cutting fluid to be unable to flow out naturally. Because the cutting fluid has a certain viscosity, long-term accumulation will inevitably increase the amount of cutting carried away (because the surface of the bridge housing is rough, the workpiece is immersed in the cutting fluid for a long time, and the cutting fluid will adhere to the surface of the bridge housing, thereby being carried away and wasted). This not only causes waste of cutting fluid, but also causes the problem of poor cleanliness of the bridge housing.

[0004] The clamping structure is used to clamp the bridge housing to prevent it from changing position during processing. The existing clamping structure uses a pressure plate and screw structure. The screw needs to pass through the pressure plate hole, which makes the tooling less versatile and has a weak clamping force. The auxiliary clamping structure refers to the use of an auxiliary clamping structure when machining the main pin hole on one side to avoid uneven force on one side of the bridge housing. This structure offsets the cutting force on one side, reduces vibration during machining, and thus improves machining accuracy. The existing auxiliary clamping structure utilizes the shape of the blank and adopts a fixed four-point clamping method. It has poor flexibility and cannot adapt to changes in the blank. Utility Model Content

[0005] This utility model proposes a tooling for machining kingpin holes in axle housing that prevents the accumulation of cutting fluid. This design incorporates modularity into the tooling design, enhancing its versatility while also improving the clamping and support structures for greater machining stability. By altering the positioning of the axle housing during machining, the tooling prevents the accumulation of cutting fluid, thereby preventing the accumulation of cutting fluid within the axle housing. This solves the problem of cutting fluid accumulating within the axle housing during machining and improves the cleanliness of the axle housing.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A tool for machining axle housing kingpin holes to prevent the accumulation of cutting fluid comprises a base plate, wherein fixed auxiliary support assemblies are respectively mounted on the left and right ends of the top of the base plate, two screw tightening assemblies are mounted on the top front end of the base plate, and two positioning assemblies are mounted on the top rear end of the base plate, wherein the screw tightening assemblies correspond to the positioning assemblies in a front-to-back manner, and a movable auxiliary support assembly is mounted on the top of the base plate, wherein the movable auxiliary support assembly is located between the two positioning assemblies;

[0008] Two limit columns are installed on the top of the base plate for interfering with the rear cover of the bridge housing. The screw tightening assembly is movably provided with a screw, and a tightening block is installed at the end of the screw. The positioning assembly is provided with a positioning plate, and the positioning plate is installed with two positioning pins. The fixed auxiliary support assembly is movably provided with a clamping beam, and a pressure claw is installed at the lower end of the clamping beam. The top of the movable auxiliary support assembly is installed with an auxiliary support top.

[0009] Through the above technical solution, the screw tightening assembly provides a stable tightening force for the bridge housing to prevent the bridge housing from shaking during the processing. The positioning assembly ensures that the bridge housing is processed in a certain processing position through the positioning method of two pins on one side. The fixed auxiliary support assembly and the movable auxiliary support assembly respectively set auxiliary supports at the near processing end and the far processing end to improve the processing rigidity of the bridge housing and improve its processing quality. The fixed auxiliary support assembly and the movable auxiliary support assembly limit the rotation of the bridge housing through fixed and movable auxiliary supports. Through the cooperation between the screw tightening assembly, the positioning assembly, the fixed auxiliary support assembly and the movable auxiliary support assembly, the bridge housing is in a state where cutting fluid is not easily accumulated during processing, and the stability of the bridge housing in this processing state is achieved through the screw tightening assembly, the fixed auxiliary support assembly and the movable auxiliary support assembly.

[0010] Optionally, a positioning pin hole is provided at the center of the top of the base plate, a plurality of mounting holes are provided at the top of the base plate, and the two limiting columns are distributed diagonally on both sides of the positioning pin hole.

[0011] Through the above technical solution, the positioning pin hole and several mounting holes can realize the connection between the base plate and the equipment workbench. The positioning pin hole is located between the two limit columns, ensuring that the bridge housing is always in a state where cutting fluid is not easily accumulated (the large flange faces down). When the bridge housing is loaded with the large flange facing up, the rear cover of the bridge housing will interfere with the limit column, playing an error-preventing role.

[0012] Optionally, the screw tightening assembly includes a screw tightening support, the top of the screw tightening support is fixedly connected to a vertical plate A, the vertical plate A is horizontally inserted with the screw, the vertical plate A is detachably connected to a screw positioning nut by a screw, the screw and the screw positioning nut are connected by a rectangular thread, one end of the screw is detachably connected to the tightening block by a locking screw, and the other end of the screw is vertically penetrated by a handle, and the end face of the locking screw does not contact the end face of the tightening block.

[0013] Through the above technical solution, the end face of the locking screw does not contact the end face of the tightening block, so that the rotational force of the screw is not transmitted to the tightening block, avoiding damage to the tightening surface of the bridge housing. The tightening block is used to tighten the bridge housing. It can be replaced to adapt to different tightening surfaces of the bridge housing. The screw positioning nut and the screw are used in conjunction with the rectangular thread to convert the rotational force of the screw into a forward tightening force.

[0014] Optionally, the four corners of the screw tightening support are detachably connected to the top of the base plate by screws, and a reinforcing rib plate is fixedly connected to one side of the vertical plate A at intervals.

[0015] Through the above technical solution, the reinforcing rib plate can enhance the strength of the vertical plate A.

[0016] Optionally, the screw sleeve is provided with a locking nut A, and the locking nut A is locked with the screw through a rectangular thread, and both ends of the handle are threadedly connected with anti-slip nuts.

[0017] Through the above technical solution, the locking nut A cooperates with the rectangular thread on the screw to lock the screw, and the anti-slip nut prevents the handle from falling out when turned.

[0018] Optionally, the positioning assembly includes a positioning support, the four corners of which are detachably connected to the top of the base plate by screws, the top of the positioning support is fixedly connected to a vertical plate B, the side of the vertical plate B is fixedly connected to a rib plate, the upper end of one side of the vertical plate B is detachably connected to a positioning plate by screws, and the side of the positioning plate is fixedly connected to two positioning pins.

[0019] Through the above technical solution, the positioning support strengthens the rigidity by welding the ribs. The positioning plate fits the surface of the bridge housing pad to determine the angle and limit the freedom of the bridge housing. The two positioning pins cooperate with the positioning pin holes of the bridge housing pad to jointly limit all the freedom of the bridge housing.

[0020] Optionally, one of the two positioning pins located on the side of the positioning plate is a cylindrical pin and the other is a diamond pin.

[0021] With the above technical solution, since the use of two cylindrical pins will restrict the movement of the bridge housing in the X direction one more time, in order to avoid over-positioning, one of the positioning pins is set to a diamond pin.

[0022] Optionally, the fixed auxiliary support assembly includes an auxiliary support bracket, the four corners of the auxiliary support bracket are detachably connected to the top of the base plate by screws, the top of the auxiliary support bracket is movably connected to two support pins, and the support pins vertically adjust their own height, one end of the top of the auxiliary support bracket is fixedly connected to a clamping screw, and the other end of the top of the auxiliary support bracket is detachably connected to a clamping bracket by screws, the upper end of the clamping screw is hinged to a clamping beam, the lower end of the clamping beam is movably connected to a pressure claw, the clamping bracket is movably connected to a locking screw, the upper end of the locking screw is threadedly connected to a locking nut B, the end of the clamping beam is provided with an opening, the upper end of the locking screw passes vertically upward through the opening, and the locking nut B is located above the opening.

[0023] Through the above technical solution, a flippable clamping beam and a height-adjustable support pin are used at the near-processing end of the bridge housing to offset the cutting force. The clamping beam is movably connected with a pressure claw, so that the clamping beam drives the pressure claw to fit the upper end face of the shaft fist of the bridge housing during rotation, and provides a downward clamping force to the pressure claw through the locking nut B. In order to avoid deformation of the bridge housing due to uneven force, the lower end face of the shaft fist of the bridge housing is supported by a rotating support pin on the lower side of the shaft fist to provide an upward support force for the bridge housing.

[0024] Optionally, a pin is inserted into the side of the clamping support, and the pin passes through the clamping support and the lower end of the locking screw. The end of the pin cooperates with the cotter pin to movably connect the locking screw and the clamping support.

[0025] Through the above technical solution, the latch and the cotter pin cooperate to movably connect the locking screw and the clamping support, thereby improving the flexibility of the locking screw, and the cotter pin can prevent the latch from falling out.

[0026] Optionally, the movable auxiliary support assembly includes a movable auxiliary support seat, and the top of the movable auxiliary support seat is rotatably connected to an auxiliary support top.

[0027] Through the above technical solution, a movable auxiliary support tip with adjustable height is used at the far processing end of the bridge shell, which plays a role in limiting the deformation of the bridge shell during processing.

[0028] After adopting the above technical solution, the beneficial effects of the utility model are:

[0029] In this utility model, the screw tightening assembly provides stable tightening force for the axle housing, preventing it from shaking during machining. The positioning assembly, using two pins on one side, ensures that the axle housing is machined in a defined position. The fixed and movable auxiliary support assemblies restrict the rotation of the axle housing. The screw tightening assembly, positioning assembly, fixed and movable auxiliary support assemblies work together to maintain a stable state during machining, preventing the accumulation of cutting fluid and ensuring the stability of the axle housing during machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only 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 labor.

[0031] Figure 1 is a three-dimensional diagram of the cooperation between the tooling and the axle housing in the embodiment;

[0032] Figure 2 This is a front view of the tooling and the axle housing in the embodiment;

[0033] Figure 3 3. It is a top view of the tooling and the axle housing in the embodiment;

[0034] Figure 4 2. It is a structural diagram of the screw tightening assembly in the embodiment;

[0035] Figure 5 It is a partial cross-sectional view of the screw and the tightening block tightening the tightening surface of the bridge housing in the embodiment;

[0036] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0037] Figure 7 is a structural diagram of the positioning assembly in the embodiment;

[0038] Figure 8 is a structural schematic diagram of a fixed auxiliary support assembly in an embodiment;

[0039] Figure 9 is a side view of the embodiment in which the auxiliary support assembly is fixed to clamp the axle end of the axle housing;

[0040] Figure 10 is a side view of the mobile auxiliary support assembly in the embodiment;

[0041] Figure 11 Schematic diagram of the structure of the bottom plate in the embodiment.

[0042] Explanation of the accompanying symbols: 1. Screw tightening assembly; 2. Positioning assembly; 3. Fixed auxiliary support assembly; 4. Mobile auxiliary support assembly; 5. Base plate; 6. Bridge housing tightening surface; 7. Upper end surface of the shaft fist; 8. Lower end surface of the shaft fist; 9. Locking screw end surface; 10. Tightening block end surface; 1-1. Screw tightening support; 1-2. Locking screw; 1-3. Tightening block; 1-4. Screw positioning nut; 1-5. Locking nut A; 1-6. Anti-slip nut; 1-7. Screw; 1-8. Handle; 2-1. Positioning support Seat; 2-2, positioning plate; 2-3, cylindrical pin; 2-4, diamond pin; 2-8, rib plate; 3-1, auxiliary support bracket; 3-2, clamping screw; 3-3, clamping beam; 3-4, clamping claw; 3-5, locking nut B; 3-6, clamping bracket; 3-9, cotter pin; 3-10, latch pin; 3-11, support pin; 3-12, locking screw; 4-1, auxiliary support top; 4-2, movable auxiliary support seat; 5-1, mounting hole; 5-2, positioning pin hole; 5-3, limit column. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] An embodiment of the present application discloses a tool for machining a kingpin hole of an axle housing that prevents the accumulation of cutting fluid.

[0045] Example

[0046] according to Figures 1 to 11As shown, a bridge housing main pin hole processing tooling for preventing cutting fluid accumulation includes a base plate 5, a tightening module, a positioning module and an auxiliary support module. The tightening module, the positioning module and the auxiliary support module can be detachably connected to the top of the base plate 5. The tightening module includes a screw tightening assembly 1, which provides a stable tightening force for the bridge housing to prevent shaking during the bridge housing processing. The positioning module includes a positioning assembly 2, which ensures that the bridge housing is processed in a certain processing position through a positioning method of two pins on one side. The auxiliary support module improves the processing rigidity of the bridge housing and improves its processing quality by respectively arranging auxiliary supports at the near processing end and the far processing end. The auxiliary support module includes a fixed auxiliary support assembly 3 and a movable auxiliary support assembly 4. The rotation of the bridge housing is limited by the two types of fixed and movable auxiliary supports. Through the cooperation between the tightening module, the positioning module and the auxiliary support module, the bridge housing is in a state where it is not easy to accumulate cutting fluid during processing, and the stability of the bridge housing in this processing state is achieved through the tightening module and the auxiliary support module.

[0047] The base plate 5 is an important part that supports the tightening module, positioning module and auxiliary support module. The base plate 5 is provided with a positioning pin hole 5-2 and several mounting holes 5-1 to achieve connection with the equipment workbench. Two limit columns 5-3 are fixedly connected to the top of the base plate 5. The positioning pin hole 5-2 is located between the two limit columns 5-3 to ensure that the bridge housing is always in a state where cutting fluid is not easily accumulated (the large flange faces down). When the bridge housing is loaded with the large flange facing up, the rear cover of the bridge housing will interfere with the limit columns 5-3, which plays a role in preventing errors.

[0048] The screw tightening assembly 1 includes a screw tightening support 1-1, the four corners of the screw tightening support 1-1 are detachably connected to the top of the base plate 5 by screws 1-10, the top of the screw tightening support 1-1 is fixedly connected to a vertical plate A, one side of the vertical plate A is fixedly connected to a reinforcing rib plate at intervals, the vertical plate A is horizontally inserted with a screw 1-7, the vertical plate A is detachably connected to a screw positioning nut 1-4 by a screw 1-9, the screw 1-7 is connected to the screw positioning nut 1-4 by a rectangular thread, the screw 1-7 is sleeved with a locking nut A1-5, the locking nut A1-5 is locked with the screw 1-7 by a rectangular thread, one end of the screw 1-7 is detachably connected to the tightening block 1-3 by a locking screw 1-2, and the other end of the screw 1-7 is detachably connected to the tightening block 1-3 A handle 1-8 is vertically passed through the end, and the handle 1-8 is set at 90 degrees to the end of the screw 1-7. The two ends of the handle 1-8 are threadedly connected with anti-slip nuts 1-6, among which the locking screw end face 9 does not contact the tightening block end face 10, so that the rotational force of the screw 1-7 is not transmitted to the tightening block 1-3, avoiding damage to the bridge housing tightening surface 6. The tightening block 1-3 is used to tighten the bridge housing and can be replaced to adapt to different bridge housing tightening surfaces 6. The screw positioning nut 1-4 is used in conjunction with the screw 1-7 through a rectangular thread to convert the rotational force of the screw 1-7 into a forward tightening force. The locking nut A1-5 is locked with the rectangular thread on the screw 1-7, and the screw 1-7 and the anti-slip nut 1-6 prevent the handle 1-8 from falling out when it is turned. The locking nut A1-5 and the lead screw 1-7 are connected using matching internal and external threads. When the locking nut A1-5 and the lead screw 1-7 are tightened against each other, the external thread tip of the lead screw 1-7 will press against the internal thread of the locking nut A1-5, generating a great friction force to achieve locking.

[0049] The positioning assembly 2 includes a positioning support 2-1, and the four corners of the positioning support 2-1 are detachably connected to the top of the base plate 5 by screws 2-7. The top of the positioning support 2-1 is fixedly connected to a vertical plate B, and the side of the vertical plate B is fixedly connected to a rib plate 2-8. The upper end of one side of the vertical plate B is detachably connected to the positioning plate 2-2 by screws 2-5. The side of the positioning plate 2-2 is fixedly connected with two positioning pins. Of the two positioning pins, one is a cylindrical pin 2-3 and the other is a diamond pin 2-4. There is no restriction on the positions of the cylindrical pin 2-3 and the diamond pin 2-4. Positioning can still be achieved by exchanging their positions. The side of the positioning plate 2-2 is fixedly connected with two positioning pins to ensure that the positioning assembly 2 is in a fixed position on the base plate 5 and reduce assembly errors.

[0050] Among them, the positioning support 2-1 plays a role in strengthening the rigidity by welding the ribs, the positioning plate 2-2 is fitted with the bridge housing pad surface, and plays a role in determining the angle and limiting the freedom of the bridge housing, and the cylindrical pin 2-3 and the diamond pin 2-4 cooperate with the positioning pin holes of the pad, and the positioning plate 2-2 and the positioning pins (the positioning pins here refer to the cylindrical pin 2-3 and the diamond pin 2-4) jointly limit all the freedoms of the bridge housing. Because the use of two cylindrical pins 2-3 will limit the movement of the bridge housing in the X direction (the X direction refers to the length direction of the bridge housing) one more time, in order to avoid over-positioning, one of the positioning pins is set to a diamond pin 2-4.

[0051] An unrestricted workpiece has 6 degrees of freedom. When its 6 degrees of freedom are restricted, the workpiece will be restricted to a fixed position, that is, workpiece positioning. When using cylindrical pins and a surface, 5 degrees of freedom can be restricted (only one degree of freedom rotating around the cylindrical pin is not restricted). At this time, if a cylindrical pin is added, the degree of freedom in the direction of the line connecting the two pins will be restricted once more, resulting in over-positioning. This problem can be avoided by using diamond pins to ensure accurate positioning.

[0052] The fixed auxiliary support assembly 3 includes an auxiliary support bracket 3-1, the four corners of the auxiliary support bracket 3-1 are detachably connected to the top of the base plate 5 by screws 3-8, the top of the auxiliary support bracket 3-1 is movably connected to two support pins 3-11, the support pins 3-11 vertically adjust their own height, one end of the top of the auxiliary support bracket 3-1 is fixedly connected to a clamping screw 3-2, the other end of the top of the auxiliary support bracket 3-1 is detachably connected to a clamping bracket 3-6 by a screw 3-7, the internal movably connected to the clamping bracket 3-6 is a locking screw 3-12, the upper end of the locking screw 3-12 is threadedly connected to a locking nut B3-5, and the upper end of the clamping screw 3-12 is hinged to a clamping cross Beam 3-3, the lower end of the clamping beam 3-3 is movably connected with a clamping claw 3-4, one end of the clamping beam 3-3 is hinged to the clamping screw 3-2, and the other end of the clamping beam 3-3 is provided with an opening, the upper end of the locking screw 3-12 passes vertically upward through the opening, and the locking nut B3-5 is located above the opening. The locking nut B3-5 is used to lock and fix the locking screw 3-12 to the clamping beam 3-3, and a pin 3-10 is inserted into the side of the clamping support 3-6. The pin 3-10 passes through the clamping support 3-6 and the lower end of the locking screw 3-12, and the end of the pin 3-10 cooperates with the cotter pin 3-9 to movably connect the locking screw 3-12 to the clamping support 3-6.

[0053] The movable auxiliary support assembly 4 includes a movable auxiliary support base 4-2, the top of which is rotatably connected to an auxiliary support tip 4-1. Here, how the movable auxiliary support base 4-2 and the auxiliary support tip 4-1 are connected is described. The auxiliary support tip 4-1 is provided with threads, and the auxiliary support tip 4-1 is threadedly connected to the top of the movable auxiliary support base 4-2. When the auxiliary support tip 4-1 is rotated, the auxiliary support tip 4-1 moves upward until it presses against the bridge housing.

[0054] Working principle:

[0055] The axle housing is hoisted horizontally above the base plate 5. The axle housing is loaded with the large flange facing upward. At this point, the large flange of the axle housing faces downward. If the workpiece is loaded incorrectly with the large flange facing upward, the limit posts 5-3 on the base plate 5 will interfere with the axle housing rear cover, thus preventing errors. The screw tightening assembly 1 is located on the axle housing pressure plate side and is responsible for tightening the axle housing in coordination with the positioning assembly 2.

[0056] Turn the handle 1-8 to drive the screw 1-7 to move horizontally. At this time, the tightening block 1-3 at the front end of the screw 1-7 presses the bridge housing. Then rotate the locking nut A1-5 to lock the screw 1-7 to prevent the tightening force of the tightening block 1-3 from being attenuated due to the cutting force during processing.

[0057] The positioning assembly 2 limits the six degrees of freedom of the bridge housing through the positioning method of two pins on one side (two pins on one side is a recognized positioning method in mechanical processing, and the six degrees of freedom refer to movement in the X, Y, and Z directions and rotation around the X, Y, and Z directions), ensuring the consistency of the position of the bridge housing each time it is clamped, and at the same time limiting the loading posture of the bridge housing, so that the bridge housing is kept in a processing state where cutting fluid is not easily accumulated (the large flange of the bridge housing faces downward).

[0058] The fixed auxiliary support assembly 3 is located near the processing end. By flipping and clamping the crossbeam 3-3, it drives the pressure claw 3-4 to fit the upper end face 7 of the axle housing's shaft fist. Then, by rotating the locking nut B3-5, a downward pressing force is applied to the pressure claw 3-4. At the same time, to prevent deformation of the axle housing caused by uneven force, a rotating support pin 3-11 is provided on the lower side of the axle housing's shaft fist. The support pin 3-11 presses against the lower end face 8 of the axle housing's shaft fist, providing an upward supporting force for the axle housing. The movable auxiliary support assembly 4 is located far from the processing end. By rotating the auxiliary support tip 4-1, it provides an upward pressing force.

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for machining axle housing kingpin holes to prevent the accumulation of cutting fluid, characterized by: The base plate comprises a bottom plate, wherein the left and right ends of the top of the bottom plate are respectively installed with fixed auxiliary support assemblies, the front end of the top of the bottom plate is installed with two screw tightening assemblies, the rear end of the top of the bottom plate is installed with two positioning assemblies, the screw tightening assemblies correspond to the positioning assemblies in a one-to-one manner, and the top of the bottom plate is installed with a movable auxiliary support assembly, and the movable auxiliary support assembly is located between the two positioning assemblies; Two limit columns are installed on the top of the base plate for interfering with the rear cover of the bridge housing. The screw tightening assembly is movably provided with a screw, and a tightening block is installed at the end of the screw. The positioning assembly is provided with a positioning plate, and the positioning plate is installed with two positioning pins. The fixed auxiliary support assembly is movably provided with a clamping beam, and a pressure claw is installed at the lower end of the clamping beam. The top of the movable auxiliary support assembly is installed with an auxiliary support top.

2. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 1, characterized in that: A positioning pin hole is provided at the center of the top of the base plate, and a plurality of mounting holes are provided on the top of the base plate. The two limiting columns are distributed diagonally on both sides of the positioning pin hole.

3. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 1, characterized in that: The screw tightening assembly includes a screw tightening support, the top of the screw tightening support is fixedly connected to a vertical plate A, the vertical plate A is horizontally inserted with the screw, the vertical plate A is detachably connected to the screw positioning nut by a screw, the screw and the screw positioning nut are connected by a rectangular thread, one end of the screw is detachably connected to the tightening block by a locking screw, and the other end of the screw is vertically penetrated by a handle, and the end face of the locking screw does not contact the end face of the tightening block.

4. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 3, characterized in that: The four corners of the screw tightening support are detachably connected to the top of the base plate by screws, and a reinforcing rib plate is fixedly connected to one side of the vertical plate A at intervals.

5. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 3, characterized in that: The screw sleeve is provided with a locking nut A, and the locking nut A is locked with the screw through a rectangular thread, and both ends of the handle are threadedly connected with anti-slip nuts.

6. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 1, characterized in that: The positioning assembly includes a positioning support, the four corners of which are detachably connected to the top of the base plate by screws, the top of the positioning support is fixedly connected to a vertical plate B, the side of the vertical plate B is fixedly connected to a rib plate, the upper end of one side of the vertical plate B is detachably connected to a positioning plate by screws, and the side of the positioning plate is fixedly connected to two positioning pins.

7. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 6, characterized in that: The two positioning pins located on the side of the positioning plate are a cylindrical pin and a diamond pin.

8. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 1, characterized in that: The fixed auxiliary support assembly includes an auxiliary support bracket, the four corners of the auxiliary support bracket are detachably connected to the top of the base plate by screws, the top of the auxiliary support bracket is movably connected to two support pins, and the support pins vertically adjust their own height, one end of the top of the auxiliary support bracket is fixedly connected to a clamping screw, and the other end of the top of the auxiliary support bracket is detachably connected to a clamping bracket by screws, the upper end of the clamping screw is hinged to a clamping beam, the lower end of the clamping beam is movably connected to a pressure claw, the clamping bracket is movably connected to a locking screw, the upper end of the locking screw is threadedly connected to a locking nut B, the end of the clamping beam is provided with an opening, the upper end of the locking screw passes vertically upward through the opening, and the locking nut B is located above the opening.

9. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 8, characterized in that: A latch is inserted into the side of the clamping support, and the latch passes through the clamping support and the lower end of the locking screw. The end of the latch cooperates with the cotter pin to movably connect the locking screw and the clamping support.

10. The tooling for machining kingpin holes of axle housing for preventing accumulation of cutting fluid according to claim 1, characterized in that: The movable auxiliary support assembly includes a movable auxiliary support seat, and the top of the movable auxiliary support seat is rotatably connected to an auxiliary support top.

Images