A universal joint bell housing workpiece positioning tool

Abstract

The present invention discloses a universal joint bell shell workpiece positioning tool, which relates to a positioning tool, including a tool base plate and a spherical tool base, wherein a deformation capsule is provided on the spherical tool base, and a conical sleeve hole is provided in the spherical tool base; a piston cylinder is provided at the tool base plate, a piston plate is provided in the piston cylinder, a moving rod is sleeved on the piston plate, a pushing component is provided at the moving rod, and a conical plug sleeve is provided at the moving rod; a clamping component is provided at the workpiece, the clamping component includes a positioning rod group, and a laser lamp is installed on the top of the positioning rod group. This positioning tool can push the conical plug sleeve into the conical sleeve hole through the pushing component, so that the deformation capsule is pushed out from the surface of the spherical tool base into the inner cavity of the workpiece, thereby reducing the mutual misalignment effect between the tool base and the workpiece caused during the positioning process, and the air inside the piston cylinder is pushed into the clamping component during the pushing process, which is beneficial to maintaining the stability of the workpiece, and the light irradiated by the laser lamp is beneficial to positioning on the workpiece and facilitating the processing of the center hole.

Description

Technical Field

[0001] The invention relates to the technical field of positioning tooling, in particular to a universal joint bell housing workpiece positioning tooling. Background Art

[0002] The bell-shaped housing is the main component of the constant velocity universal joint. The shape of its inner spherical groove is particularly complex. After rough machining of the bell-shaped housing, it is necessary to locate the center hole position of the workpiece to facilitate subsequent fine machining and inner cavity heating. When machining the center hole of the rough-machined universal joint bell-shaped housing tooling, it is usually necessary to use a positioning tooling to assist in the center hole machining.

[0003] The currently used positioning tooling is as follows Figure 1 As shown in , the bottom is a cylindrical structure, a protrusion is set on the top of the cylinder to fit the inner wall of the bell-shaped workpiece, and a block is set on the outside of the protrusion to fit the groove of the inner wall of the bell-shaped shell. Then a pressure plate is set on the outside of the bell-shaped shell, and the workpiece is placed on the positioning seat for positioning. The pressure plate moves downward to press the bell-shaped shell, and the spindle starts to work on the end face of the rod to punch a center hole. However, since the verticality error between the positioning surface of the inner cavity of the product and the pressing plane is large, and the pressing plane is produced by warm forging, there are often protrusion defects. In this way, the workpiece will be deflected by a certain angle along the arc surface of the positioning seat during pressing, and the punched center hole is offset from the center of the inner cavity. When punching the positioning hole on the cylinder of the bell-shaped shell, the punching equipment such as the drill bit acts on the top position of the bell-shaped shell, which easily causes the bell-shaped shell to shake. The inner cavity and the outer circle position of the fine-turned part are offset, and the subsequent hot finishing of the inner cavity is very likely to produce scrap. Therefore, we propose a universal joint bell-shaped shell workpiece positioning tool. Summary of the Invention

[0004] The object of the present invention is to provide a universal joint bell housing workpiece positioning tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a universal joint bell-shaped shell workpiece positioning tool, comprising a tool base, a spherical tool is installed on the tool base, the spherical tool is provided with a plurality of deformation capsules adapted to the inner wall of the workpiece, and a conical sleeve hole is provided inside the spherical tool; a piston cylinder is installed at the bottom of the tool base, a piston plate is provided in the piston cylinder, a moving rod moving in the piston cylinder is sleeved on the piston plate, a pushing component is installed at the bottom of the moving rod, and a conical plug sleeve inserted into the conical sleeve hole is installed on the top of the moving rod; a clamping component is provided on the outside of the workpiece, and the clamping component includes a positioning rod group, the positioning rod group is connected to the piston cylinder by an air guide pipe, the positioning rod group is wrapped around the outside of the workpiece, and a laser lamp is installed on the top of the positioning rod group, the intersection point of the light emitted by the laser lamp is projected on the top of the workpiece, and the pushing component pushes the conical plug sleeve to move to squeeze out the deformation capsule of the spherical tool, and the pushing component drives the air pressure change in the piston cylinder.

[0006] Preferably, the lower and upper parts of the spherical tooling are both provided with fixing grooves, and a positioning block is installed on the top fixing groove, and a plurality of buffer pads are installed on the tooling bottom plate.

[0007] Preferably, the top of the piston cylinder is a flange mounting surface, and the flange mounting surface is installed on the bottom of the tooling base plate. The top of the piston cylinder is provided with a cavity plate, and a hole for passing the moving rod is opened on the cavity plate, and the inside of the moving rod is a cavity.

[0008] Preferably, a connecting rod is installed on the conical plug sleeve, and a positioning piece is fixed on the connecting rod. The positioning piece is located on the top of the positioning block, and the center of the positioning piece is a circular hole.

[0009] Preferably, the pushing component includes a pushing plate installed at the bottom of the moving rod, and a plurality of springs are installed between the pushing plate and the bottom of the piston cylinder. A pushing groove is provided at the bottom of the pushing plate, and a notch communicating with the cavity of the moving rod is provided on the pushing groove.

[0010] Preferably, a plurality of raised blocks are installed at equal angles on the outer side of the push plate, a locking column is installed on the top of the raised block, a plurality of locking grooves are provided at the bottom of the piston cylinder, and a pressing piece is provided on the locking column.

[0011] Preferably, the clamping component also includes a release bent rod, a release ball is installed at the bottom of the release bent rod, a multi-layer air collecting ring tube is provided on the release bent rod, the air collecting ring tube is connected to a contraction air tube, the contraction end of the contraction air tube is slidably sleeved in the air collecting ring tube, a movable plug is provided in the air collecting ring tube, and the movable plug is connected to the end of the contraction air tube by an installation pin 842, a puncture rod for puncturing the movable plug is provided in the air collecting ring tube, the contraction air tube is an annular pipe wrapped around the outer wall of the workpiece, a clamping bent rod is installed on the contraction air tube, and a guide ball connected to the air guide tube is provided on the clamping bent rod.

[0012] Preferably, the release bent rod and the clamping bent rod are provided with a plurality of fitting plugs.

[0013] Preferably, a plurality of pressing protrusions are installed on the inner wall of the tapered sleeve hole, and the pressing protrusions correspond to the deformable capsule.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention arranges a spherical tooling to be inserted into the interior of the workpiece, and a deformable capsule arranged on the spherical tooling is conveniently pushed out from the surface of the spherical tooling into the inner cavity of the workpiece after the conical plug sleeve is pushed into the conical sleeve hole by a pushing component, thereby reducing the influence of the mutual misalignment between the tooling and the workpiece during the positioning process, and at the same time, during the pushing process, it is convenient to push the air inside the piston cylinder into the clamping component, which is beneficial to maintaining the stability of the workpiece. After the positioning rod group clamps the workpiece, the light emitted by the laser lamp is conducive to positioning on the workpiece, which is convenient for machining the center hole.

[0016] The clamping component of the present invention is configured as an air collecting ring tube and a shrinking air tube, and the diameter of each layer is different, which is conducive to clamping and stabilizing the workpiece.

[0017] The fixing grooves designed at the bottom and top of the spherical tooling of the present invention facilitate the release of the spherical tooling. At the same time, the buffer pad installed on the tooling bottom plate can slow down the wear of the tooling bottom plate on the bottom of the workpiece after the spherical tooling fits into the workpiece, and is conducive to releasing the stress of the spherical tooling after being compressed, thereby avoiding compression wear of the spherical tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the workpiece and existing tooling structure;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the side structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the partial cross-section structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the spherical tooling structure of the present invention;

[0023] Figure 6 Schematic diagram of the bottom structure of the spherical tooling of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the present invention after the piston cylinder is removed;

[0025] Figure 8 for Figure 7 Schematic diagram of the structure after the sphere tooling is removed;

[0026] Figure 9 This is a schematic diagram of the structure of the piston cylinder after partial sectioning of the present invention;

[0027] Figure 10 This is a schematic diagram of a partial cross-section structure of the spherical tooling of the present invention;

[0028] Figure 11Schematic diagram of the structure of the contraction trachea and gas collecting ring pipe.

[0029] Figure: 1, tooling base; 2, spherical tooling; 3, piston cylinder; 4, piston plate; 5, moving rod; 6, pushing member; 7, tapered plug sleeve; 8, clamping member; 21, deformable capsule; 22, tapered sleeve hole; 23, fixing groove; 24, positioning block; 25, buffer pad; 26, pressing protrusion; 31, flange mounting surface; 32, cavity plate; 61, pushing plate; 62, spring; 63, pushing groove ; 64. Notch; 65. Raised block; 66. Engaging column; 67. Engaging groove; 71. Connecting rod; 72. Positioning piece; 81. Air guide tube; 82. Release ball; 83. Air collecting ring tube; 84. Contraction air tube; 85. Clamping curved rod; 86. Air guide ball; 87. Fitting plug; 88. Release curved rod; 89. Laser light; 841. Movable plug; 842. Mounting pin; 843. Puncture rod. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0031] The present invention provides a technical solution: a universal joint bell shell workpiece positioning tool, which is designed to solve the problem of drilling a center hole in the bell shell workpiece used in the universal joint, including a tool base 1, a spherical tool 2 is installed on the tool base 1, the spherical tool 2 is provided with a plurality of deformable capsules 21 adapted to the inner wall of the workpiece, and a tapered sleeve hole 22 is provided inside the spherical tool 2; the lower and upper parts of the spherical tool 2 are both provided with fixing grooves 23, and a positioning block 24 is installed on the top fixing groove 23, and a plurality of buffer pads 25 are installed on the tool base 1. As shown in the attached figure Figure 5 and attached Figure 6 As shown in the figure, the spherical tooling 2 is a sphere as a whole, and its top and bottom are excavated with a radius less than half, and a concave groove is opened on the surface of the spherical tooling 2 to facilitate the deformation of the deformable capsule 21 at the concave groove on the surface of the spherical tooling 2.

[0032] A piston cylinder 3 is installed at the bottom of the tooling base plate 1. The top of the piston cylinder 3 is a flange mounting surface 31, and the flange mounting surface 31 is installed at the bottom of the tooling base plate 1. A cavity plate 32 is provided on the top of the piston cylinder 3. A piston plate 4 is provided in the piston cylinder 3. A moving rod 5 that moves in the piston cylinder 3 is sleeved on the piston plate 4. A hole is opened on the cavity plate 32 to pass through the moving rod 5. The interior of the moving rod 5 is a cavity. When the moving rod 5 drives the piston plate 4 to move in the piston cylinder 3, the internal air pressure of the piston cylinder 3 is changed. A tapered plug sleeve 7 that is inserted into the tapered sleeve hole 22 is installed on the top of the moving rod 5.

[0033] In order to facilitate the movement of the cone plug sleeve 7 by moving the rod 5, a pushing component 6 is installed at the bottom of the moving rod 5. The design of the pushing component 6 is as shown in the attached figure. Figure 2 -Attached Figure 4 , attached Figure 7 -Attached Figure 9 As shown, the pushing component 6 includes a pushing plate 61 installed at the bottom of the moving rod 5, and a plurality of springs 62 are installed between the pushing plate 61 and the bottom of the piston cylinder 3. A pushing groove 63 is provided at the bottom of the pushing plate 61, and a notch 64 is provided on the pushing groove 63, which is in communication with the cavity of the moving rod 5. The pushing plate 61 is pushed manually, or other pushing devices such as a telescopic cylinder are used, so that the pushing plate 61 drives the moving rod 5 to move. When the moving rod 5 is driven to move, since the conical plug sleeve 7 is fixedly installed on the moving rod 5, the moving rod 5 drives the conical plug sleeve 7 to enter the conical sleeve hole 22 inside the spherical fixture 2, thereby causing the spherical fixture 2 to expand from its spherical shape, and the deformed capsule 21 overflows from the concave groove opened on the surface of the spherical fixture 2 and fills the groove that fits the inner wall of the bell-shaped shell.

[0034] In order to increase the tightening force after the push plate 61 is pushed forward, a plurality of raised blocks 65 are installed at equal angles on the outside of the push plate 61, a locking column 66 is installed on the top of the raised block 65, and a plurality of locking grooves 67 are provided at the bottom of the piston cylinder 3. A pressing piece is provided on the locking column 66, and the pressing piece can be pressed on the locking column 66. When the push plate 61 is toward the bottom of the piston cylinder 3, when the locking column 66 is pushed toward the locking groove 67, the design of the locking groove 67 is as shown in the attached figure. Figure 7 As shown in the figure, a circular hole of a locking groove 67 is opened on the plate at the bottom of the piston cylinder 3, and a strip groove is opened on the outer wall of the circular hole. The strip groove can be adapted to the pressing piece of the locking column 66. When the locking column 66 is pushed toward the locking groove 67, the pressing piece is compressed until the pressing piece is stuck in the strip groove. At this time, the spring 62 pushes in a straight line direction of the moving rod 5, so that the locking column 66 is stabilized in the locking groove 67.

[0035] At the same time, in order to maintain the stability of the outside of the workpiece, a clamping component 8 is provided on the outside of the workpiece, and the clamping component 8 includes a positioning rod group. The positioning rod group is connected to the piston cylinder 3 by an air guide tube 81. The positioning rod group is wrapped around the outside of the workpiece, and a laser lamp 89 is installed on the top of the positioning rod group. The laser lamp 89 uses a universal model because the laser lamp 89 is installed at the top position of the positioning rod group, and its height is approximately higher than the height of the workpiece. The positioning rod group designed in the scheme is three groups of rods, and a three-point positioning method is adopted. The laser lamp 89 emits a laser beam through the center of the workpiece. The intersection point of the three groups of laser beams is the center position of the workpiece. The intersection point of the light emitted by the laser lamp 89 is projected on the top of the workpiece, and the punching equipment is aligned with the laser intersection point for punching, which is convenient for processing the center hole of the workpiece.

[0036] When the pushing component 6 pushes the conical plug sleeve 7 to move, the deformed capsule 21 of the spherical tooling 2 is squeezed out, and the deformed capsule 21 overflows from the recessed groove position on the surface of the spherical tooling 2, thereby fitting into the recessed groove position in the inner cavity of the workpiece. The spherical surface of the spherical tooling 2 fits into the spherical surface position in the inner cavity of the workpiece, thereby maintaining stable clamping of the sphere.

[0037] When the pushing component 6 pushes the cone plug sleeve 7 to move, the air pressure in the piston cylinder 3 changes, and the gas in the piston cylinder 3 is squeezed into the clamping component 8. The clamping component 8 also includes a release crank rod 88. A release ball 82 is installed at the bottom of the release crank rod 88. A multi-layer gas collecting ring tube 83 is provided on the release crank rod 88. The gas collecting ring tube 83 is connected to a contraction gas pipe 84. The contraction end of the contraction gas pipe 84 is slidably sleeved in the gas collecting ring tube 83. A movable plug 841 is provided in the gas collecting ring tube 83, and the movable plug 841 is provided in the gas collecting ring tube 83. The end of the shrinkage tube 84 is connected by a mounting pin 842. A puncture rod 843 is provided in the gas collecting ring tube 83 to puncture a movable plug 841. The shrinkage tube 84 is an annular tube wrapped around the outer wall of the workpiece. A clamping crank 85 is installed on the shrinkage tube 84, and a guide ball 86 connected to the guide tube 81 is provided on the clamping crank 85. The gas collecting ring tube 83 and the shrinkage tube 84 of each layer are combined into a complete ring body wrapped around the outside of the workpiece. Because the outside of the bell-shaped shell of the universal joint is a cylinder with a gradually changing diameter, as shown in the attached figure, Figure 2 -Attached Figure 4 , and attached Figure 7 -Attached Figure 10As shown in the figure, the overall design of the release crank rod 88 and the clamping crank rod 85 imitates the shape of the bell-shaped shell workpiece. The gas collecting ring tube 83 and the contraction air tube 84 of each layer are combined into a complete ring body. The diameter of the ring body gradually increases from top to bottom of the workpiece according to the size of the bell-shaped shell workpiece. When the gas in the piston cylinder 3 enters the contraction air tube 84 from one of the air guide tubes 81, the contraction air tube 84 discharges gas to both ends, so that the two ends of the contraction air tube 84 contract toward the gas collecting ring tube 83, causing the gas collecting ring tube 83 and the contraction air tube 84 to be combined into a complete ring body and begin to shrink and wrap around the outside of the bell-shaped shell workpiece. After positioning the inner cavity of the workpiece, the clamping positioning of the outside of the workpiece is increased, which is conducive to maintaining the stability of the entire workpiece.

[0038] To increase the grip on the workpiece's exterior, multiple contact plugs 87 are provided on the release crank 88 and clamping crank 85. Once the release crank 88 and clamping crank 85 are retracted and clamped onto the workpiece, the contact plugs 87 press against the workpiece surface. The contact plugs 87 are made of a soft material, such as fabric or rubber, to reduce wear on the workpiece surface. Furthermore, because the contact plugs 87 and the workpiece surface are in contact, the release crank 88 and clamping crank 85 are prevented from directly pressing against the workpiece surface. After machining the workpiece's center, the release sphere 82 is opened to release the gas within the gas collecting ring 83, reopening the assembled ring body and facilitating the removal of the workpiece.

[0039] In order to provide a buffering and shock-absorbing effect on the inner cavity of the workpiece when the punching equipment processes the center hole of the workpiece and avoid damage to the inner cavity of the workpiece, a connecting rod 71 is installed on the conical plug sleeve 7, and a positioning piece 72 is fixed on the connecting rod 71. The positioning piece 72 is located at the top of the positioning block 24, and the center of the positioning piece 72 is a circular hole. In this way, after the conical plug sleeve 7 is completely inserted into the conical sleeve hole 22, the positioning piece 72 is just fixed at the top position of the inner cavity of the workpiece.

[0040] In order to assist the conical sleeve 7 in squeezing out the deformed capsule 21 on the spherical tooling 2, a plurality of pressing protrusions 26 are installed on the inner wall of the conical sleeve hole 22, and the pressing protrusions 26 correspond to the deformed capsule 21. In this way, after the conical sleeve 7 enters the conical sleeve hole 22 and contacts the pressing protrusions 26, the deformed capsule 21 on the spherical tooling 2 is more easily squeezed out because the pressing protrusions 26 and the concave grooves on the spherical tooling 2 correspond to each other.

[0041] When in use, the equipment is assembled first. The two ends of the shrinkage tube 84 and the gas collecting ring tube 83 are detachable, that is, the two ends of the shrinkage tube 84 are slidably installed inside the gas collecting ring tube 83, and are sealed at the plug-in position by a detachable sealing ring. First, the gas collecting ring tube 83 and the shrinkage tube 84 are disassembled, and the moving rod 5 and the piston plate 4 are installed inside the piston cylinder 3. Then, the mounting hole at the bottom of the tooling base plate 1 is aligned with the flange mounting surface 31 at the top of the piston cylinder 3 for fixing. In this way, the piston cylinder 3, the conical plug sleeve 7 and the ball tooling 2 are combined into a whole. Before the ball tooling 2 is pushed into the inner cavity of the workpiece, the recessed groove on the surface of the ball tooling 2 is aligned with the inner cavity of the workpiece. The concave groove is then held by the piston cylinder 3, and the spherical tooling 2 is inserted into the inner cavity of the workpiece. At this time, the gas collecting ring tube 83 and the contraction air tube 84 can be assembled, and then the pushing plate 61 is pushed forward until the cylinder at the front end of the engaging column 66 enters the engaging groove 67. The pressing piece on the surface of the engaging column 66 is pressurizable and contractible. When the pushing plate 61 is continuously pushed, the pressing piece is pressed until the pressing piece overflows from the groove frame on the outer wall of the engaging groove 67. The pushing plate 61 is stabilized at the bottom position of the piston cylinder 3. In the process of pushing the pushing plate 61 forward, the conical plug sleeve 7 connected to the moving rod 5 begins to enter the conical sleeve hole 22, and the conical plug sleeve 7 enters the conical sleeve hole 22. After the upper part contacts the pressing protrusion 26, because the pressing protrusion 26 and the concave groove on the spherical tooling 2 correspond to each other, the deformable capsule 21 on the spherical tooling 2 is more easily squeezed out, so that the spherical surface of the spherical tooling 2 fits the arc surface of the inner cavity of the workpiece, and the deformable capsule 21 fits the concave groove of the inner cavity of the workpiece, and the overall design of the release crank rod 88 and the clamping crank rod 85 imitates the shape of the bell-shaped shell workpiece. The gas collecting ring tube 83 and the contraction air tube 84 of each layer are combined into a complete ring body. The diameter of the ring body is different according to the size of the bell-shaped shell workpiece. The diameter of the ring body gradually increases from the top to the bottom of the workpiece. When the gas in the piston cylinder 3 enters the contraction air tube 84 from one of the air guide tubes 81, the contraction The shrinkage tube 84 discharges gas to both ends, and the gas drives the movable plug 841 to move along the gas collecting ring tube 83. Since the movable plug 841 is fixedly connected to the shrinkage end of the shrinkage tube 84 through the mounting pin 842, the two ends of the shrinkage tube 84 shrink toward the gas collecting ring tube 83, causing the gas collecting ring tube 83 and the shrinkage tube 84 to be combined into a complete ring body and begin to shrink and wrap around the outside of the bell-shaped shell workpiece. After positioning the inner cavity of the workpiece, the clamping positioning of the outside of the workpiece is increased, which is conducive to maintaining the stability of the entire workpiece. When releasing the workpiece, the gas collecting ring tube 83 is pressed and twisted, so that the puncture rod 843 punctures the movable plug 841, thereby discharging the gas. After the release curved rod 88 and the clamping curved rod 85 are positioned at three points on the workpiece cylinder, the laser lamp 89 emits a laser beam through the center of the workpiece. The intersection point of the three groups of laser beams is the center position of the workpiece. The intersection point of the light emitted by the laser lamp 89 is projected on the top of the workpiece. The punching equipment is aligned with the laser intersection point for punching, which facilitates the processing of the center hole of the workpiece.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A universal joint bell housing workpiece positioning tool, comprising a tool base plate (1), characterized in that: A spherical tool (2) is mounted on the tool base (1), and a plurality of deformable capsules (21) adapted to the inner wall of the workpiece are provided on the spherical tool (2), and a conical sleeve hole (22) is provided inside the spherical tool (2); A piston cylinder (3) is installed at the bottom of the tooling base plate (1), a piston plate (4) is provided in the piston cylinder (3), a moving rod (5) is sleeved on the piston plate (4) and moves in the piston cylinder (3), a pushing component (6) is installed at the bottom of the moving rod (5), and a conical plug sleeve (7) is installed on the top of the moving rod (5) and is inserted into the conical sleeve hole (22); The pushing component (6) includes a pushing plate (61) installed at the bottom of the moving rod (5), and a plurality of springs (62) are installed between the pushing plate (61) and the bottom of the piston cylinder (3). A pushing groove (63) is provided at the bottom of the pushing plate (61), and a notch (64) communicating with the cavity of the moving rod (5) is provided on the pushing groove (63). A plurality of protruding blocks (65) are installed at equal angles on the outside of the push plate (61), a locking column (66) is installed on the top of the protruding block (65), a plurality of locking grooves (67) are provided on the bottom of the piston cylinder (3), and a pressing piece is provided on the locking column (66); A clamping component (8) is provided on the outside of the workpiece, and the clamping component (8) includes a positioning rod group, the positioning rod group and the piston cylinder (3) are connected to an air guide tube (81), the positioning rod group is wrapped around the outside of the workpiece, and a laser lamp (89) is installed on the top of the positioning rod group, and the intersection point of the light emitted by the laser lamp (89) is projected on the top of the workpiece, and the pushing component (6) pushes the cone plug sleeve (7) to move to squeeze out the deformed capsule (21) of the spherical tooling (2), and the pushing component (6) drives the air pressure in the piston cylinder (3) to change; The clamping component (8) further comprises a release curved rod (88), a release sphere (82) being mounted at the bottom of the release curved rod (88), a multi-layer gas collecting ring tube (83) being mounted on the release curved rod (88), a contraction gas tube (84) being connected to the gas collecting ring tube (83), a contraction end of the contraction gas tube (84) being slidably sleeved in the gas collecting ring tube (83), a movable plug (841) being mounted in the gas collecting ring tube (83), and the movable plug (841) being connected to the end of the contraction gas tube (84) via a mounting pin (842), a puncture rod (843) for puncturing the movable plug (841) being mounted in the gas collecting ring tube (83), the contraction gas tube (84) being an annular tube wrapped around the outer wall of the workpiece, a clamping curved rod (85) being mounted on the contraction gas tube (84), and a guide ball (86) being connected to the guide gas tube (81) being mounted on the clamping curved rod (85).

2. A universal joint bell housing workpiece positioning fixture according to claim 1, characterized in that: The spherical tooling (2) is provided with fixing grooves (23) at the bottom and top, and a positioning block (24) is installed on the fixing groove (23) at the top. A plurality of buffer pads (25) are installed on the tooling base plate (1).

3. The universal joint bell housing workpiece positioning fixture according to claim 1, characterized in that: The top of the piston cylinder (3) is a flange mounting surface (31), and the flange mounting surface (31) is mounted on the bottom of the tooling base plate (1). The top of the piston cylinder (3) is provided with a cavity plate (32), and the cavity plate (32) is provided with a hole for passing the moving rod (5), and the interior of the moving rod (5) is a cavity.

4. The universal joint bell housing workpiece positioning fixture according to claim 2, characterized in that: A connecting rod (71) is mounted on the conical plug sleeve (7), and a positioning piece (72) is fixed on the connecting rod (71). The positioning piece (72) is located on the top of the positioning block (24), and the center of the positioning piece (72) is a circular hole.

5. The universal joint bell housing workpiece positioning tool according to claim 1, characterized in that: The release curved rod (88) and the clamping curved rod (85) are provided with a plurality of fitting plugs (87).

6. The universal joint bell housing workpiece positioning fixture according to claim 1, characterized in that: A plurality of pressing protrusions (26) are installed on the inner wall of the tapered sleeve hole (22), and the pressing protrusions (26) correspond to the deformable capsule (21).

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