Quick-mounting joint bearing clamping tool

Abstract

The embodiment of the application provides a quick-mounting type knuckle bearing clamping tool, relates to the knuckle bearing processing technical field, and comprises a ball head fixing portion, a mounting disc, a clamping portion arranged at the upper end of the mounting disc, and a driving conical gear arranged at the middle portion of the mounting disc. When the knuckle bearing is mounted, the ball head fixing portion is responsible for limiting the radial freedom degree and the rotation freedom degree of the ball head, and the cross rod fixing portion synchronously assists in supporting or locking the extension rod portion of the bearing, effectively eliminates the tool letting phenomenon and processing vibration of the long rod type knuckle bearing in the cantilever state, and significantly improves the machining precision and surface quality of the milling, drilling and other processes.

Description

Technical Field

[0001] This invention belongs to the field of spherical bearing processing technology, and particularly relates to a quick-install spherical bearing clamping fixture. Background Technology

[0002] Spherical plain bearings are critical mechanical connecting components widely used in aerospace, construction machinery, automotive suspension systems, and various automated equipment. A typical structure includes a ball head with a spherical outer surface and a connected rod-shaped handle (or extension rod). In actual manufacturing, to meet assembly accuracy or functional requirements, the handle of the spherical plain bearing often requires secondary precision machining, such as milling, drilling, tapping, or boring.

[0003] Traditional clamping methods typically only fix the ball joint of the spherical plain bearing, while the long, rod-shaped handle is left suspended. This cantilever-beam clamping method results in a severe lack of rigidity in the machining system. When the milling cutter or drill bit contacts the workpiece for cutting, the cutting force easily induces elastic tool deflection in the workpiece, and may even generate strong self-excited vibration (chatter). This not only leads to out-of-tolerance machining and deterioration of surface roughness (such as chatter marks), but also accelerates tool wear, severely limiting the machining accuracy and surface quality of the spherical plain bearing. Summary of the Invention

[0004] This application aims to at least address one of the technical problems existing in the prior art, such as tool deflection, vibration, reduced machining accuracy, and poor surface quality caused by the cantilever clamping of long rod-type spherical bearings during machining processes such as milling, drilling, and boring. To this end, this application proposes a quick-install spherical bearing clamping fixture.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: The ball head fixing part and the crossbar fixing part installed on one side of the ball head fixing part are both installed on the upper end of the base at the lower end; The ball head fixing part includes a mounting plate, the upper end of which is provided with a clamping part, and the middle part of which is provided with a driving bevel gear.

[0006] Preferably, the clamping part includes a positioning frame fixedly installed on the upper end of the mounting plate and an outer clamping frame and an inner clamping frame slidably installed on the upper end of the positioning frame. The lower ends of the outer clamping frame and the inner clamping frame are provided with movable seats, and the movable seats are adjusted by a double-ended screw threaded on the lower end.

[0007] Preferably, the clamping part is provided in three sets and is evenly distributed on the upper end of the mounting plate. One end of the double-headed screw movably mounted on the upper end of the positioning frame is equipped with a transmission bevel gear, and the transmission bevel gear is threadedly driven by the drive bevel gear.

[0008] Preferably, the outer clamping frame and the inner clamping frame are movably mounted on the upper end of the upright frame at the upper end of the movable seat. The upper end of the upright frame is provided with an adjustment groove. One end of the outer clamping frame and the inner clamping frame are movably inserted into the adjustment groove and fastened by a nut thread.

[0009] Preferably, the outer clamping frame is arranged in a V-shape, the inner clamping frame is an elliptical rod, and the upper ends of both the outer and inner clamping frames are covered with elastic pads.

[0010] Preferably, the crossbar fixing part includes a limiting seat installed on the upper end of the base, and a fixed seat and a movable seat installed on the upper end of the limiting seat. The movable seat is slidably installed on the upper end of the limiting seat, and its position is adjusted by a drive screw installed by a thread in the middle. The drive screw is installed through a transmission component fixedly installed at the lower end of the movable seat, and the two ends of the drive screw are movably installed on both sides of the limiting seat by bearings.

[0011] Preferably, a level is movably mounted on the upper end of the fixed seat and the movable seat, and the level is movably mounted inside a slot at the upper end of the fixed seat and the movable seat.

[0012] Preferably, the fixed seat and the movable seat include a support seat for installation and fixation and a locking frame rotatably mounted on the upper end of the support seat, and both the support seat and the locking frame are fixed by a latch provided on one side.

[0013] Preferably, the upper ends of the support base and the locking frame are arranged in a V-shaped groove, and a placement clip is movably installed inside.

[0014] Preferably, the placement clamp includes lower seats disposed on both sides, the lower seats being movably mounted on the upper end of the support base and fixed by fastening screws disposed on both sides, and an upper seat disposed on the upper end of the clamping frame, the upper seat being threadedly mounted on the upper end of the clamping frame and positioned at the upper middle part of the two sets of lower seats.

[0015] The quick-release spherical bearing clamping fixture of the present invention has the following advantages: 1. This quick-install spherical plain bearing clamping fixture transforms the traditional cantilever support mode into a dual-support high-rigidity support through the synergistic action of the ball joint fixing part and the crossbar fixing part. This not only restricts the freedom of the ball joint but also provides auxiliary locking for the long bar section, effectively eliminating tool deflection and machining vibration during milling, drilling, and other processes of long bar spherical plain bearings, thereby significantly improving machining accuracy and surface quality.

[0016] 2. This quick-installation spherical bearing clamping fixture utilizes the synchronous transmission of a drive bevel gear and three sets of transmission bevel gears, combined with a double-ended screw with oppositely helical threads at both ends, to drive the three clamping parts to move synchronously radially. Regardless of changes in the diameter of the ball head, its geometric center is always forcibly corrected and maintained on the axis of the mounting plate, achieving high-precision automatic centering and solving the centering offset problem caused by workpiece dimensional tolerances in traditional single-sided drive fixtures.

[0017] 3. This quick-install spherical bearing clamping fixture features modular installation of the outer and inner clamping frames. When switching products, clamping frame modules of different materials or shapes can be directly replaced without disassembling the transmission mechanism. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the planar structure of the ball head fixing part according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the clamping part structure according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the inner clamping frame and outer clamping frame structure according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the crossbar fixing part according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the fixed seat and movable seat structure according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the placement clip structure according to an embodiment of the present invention.

[0026] The markings in the diagram are as follows: 100, ball head fixing part; 110, mounting plate; 120, drive bevel gear; 130, clamping part; 131, positioning frame; 132, transmission bevel gear; 133, double-ended screw; 134, moving seat; 140, inner clamping frame; 141, upright frame; 142, adjusting groove; 150, outer clamping frame; 200, crossbar fixing part; 210, limit seat; 220, fixed seat; 230, movable seat; 231, support seat; 232, latch; 233, transmission component; 234, locking frame; 240, placement clamp; 241, lower seat; 242, upper seat; 243, fastening screw; 250, drive screw; 300, level. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-7 As shown, the quick-release spherical plain bearing clamping fixture of the present invention comprises the following core components: a ball head fixing part 100, which functions to precisely clamp and fix the ball head of the spherical plain bearing; a crossbar fixing part 200, which is installed on one side of the ball head fixing part 100 and is used to provide auxiliary support and locking for the handle part (or rod part, extension rod part) of the spherical plain bearing; and a base located at the bottom for bearing and supporting the ball head fixing part 100 and the crossbar fixing part 200. By precisely and compactly arranging the two major functional modules, the ball head fixing part 100 and the crossbar fixing part 200, on the same base, this fixture minimizes the axial dimension of the overall structure while ensuring machining performance, making it particularly suitable for use in space-constrained machining centers or multi-axis machine tools. Furthermore, the ball joint fixing part 100 serves as a precision centering unit, and its core component includes a mounting plate 110 for mounting and supporting all related parts. The mounting plate 110 is a high-rigidity disc structure, with its upper end face serving as a mounting reference and equipped with a clamping part 130 for clamping the ball joint of the spherical plain bearing. To achieve rapid and precise centering and variable-diameter clamping, a drive bevel gear 120, serving as a core power distribution element, is mounted in the central region of the mounting plate 110. This drive bevel gear 120 not only serves as a power input end, but more importantly, it acts as a symmetrical power distributor, capable of synchronously and uniformly transmitting a single rotational motion to multiple driven units.

[0029] When installing and machining spherical plain bearings, the ball head fixing part 100 is responsible for restricting all radial degrees of freedom (translation in the X and Y directions) and rotational degrees of freedom about its own axis of the workpiece ball head, thus establishing the first datum for machining. At the same time, the crossbar fixing part 200 provides auxiliary support or strong locking for the long bar (handle part) extending from the ball head. This "main (ball head) + auxiliary (bar)" dual support strategy fundamentally changes the stress state of long bar type spherical plain bearings during machining. It transforms the traditional cantilever beam support mode into a double-support simply supported beam or fixed beam mode, greatly improving the rigidity of the entire process system, effectively eliminating the elastic tool deflection phenomenon and self-excited / forced vibration generated by the workpiece under the action of cutting force, thereby significantly improving the machining accuracy and surface finish of milling, drilling, tapping, boring and other processes on the bearing bar. The precise design and symmetrical layout of the drive bevel gear 120 ensure that the clamping part 130 can always use the geometric center of the mounting plate 110 as the absolute reference, realizing automatic centering and clamping of ball heads of different diameters. This feature eliminates the tedious process of repeated alignment relying on the operator's experience in traditional fixtures, fundamentally ensuring the repeatability and consistency of positioning accuracy, and significantly reducing auxiliary time.

[0030] Specifically, please combine Figure 1 and Figure 2The clamping part 130, serving as a centering clamping unit, includes a positioning frame 131 fixedly mounted on the upper surface of the mounting plate 110, and two core actuators slidably mounted on the upper end of the positioning frame 131 and working in coordination: an outer clamping frame 150 and an inner clamping frame 140. The lower ends of both the outer clamping frame 150 and the inner clamping frame 140 are rigidly connected to a moving seat 134 for linear movement. This moving seat 134 engages with a horizontally arranged double-ended screw 133 through a precision-machined threaded hole at its lower end. The double-ended screw 133 is the core transmission component for achieving synchronous centering movement of the clamping part 130; its two ends are respectively machined with precision threads of opposite directions and equal pitch (e.g., the left end is a left-hand thread, and the right end is a right-hand thread). When the double-ended screw 133 is rotated by external power, based on the principle of threaded transmission, the two moving seats 134, which mesh with the left-hand and right-hand threads respectively, will receive equal and opposite driving forces. This causes the outer clamping frame 150 and the inner clamping frame 140 to simultaneously move towards the central axis of the mounting plate 110 at the same speed and in completely opposite directions, or simultaneously open away from the central axis. This ensures that no matter how the diameter of the spherical plain bearing ball head changes, its geometric center is always forcibly corrected and kept on the fixed axis of the mounting plate 110. This solves the centering offset problem caused by the dimensional tolerance of the workpiece itself or uneven clamping force in traditional single-sided drive fixtures, achieving high-precision automatic centering. At the same time, this symmetrical clamping structure also allows the clamping part 130 to flexibly adapt to spherical plain bearing ball heads of different diameters within a certain range, significantly improving the versatility and interchangeability of the tooling.

[0031] To achieve uniform and stable clamping of the ball head and eliminate micro-deformation of the workpiece that may be caused by asymmetric clamping force, the clamping part 130 is provided in three sets, and is evenly distributed radially at a 120° angle to the upper end face of the mounting plate 110 with the center as the center. This is a typical "three-point centering" stable structure, which can provide the most balanced radial clamping force. Each set of positioning brackets 131 has a double-ended screw 133 movably mounted on it through a bearing seat, and a transmission bevel gear 132 is fixedly mounted on the same end of each double-ended screw 133. These three transmission bevel gears 132 are precisely meshed with the centrally located drive bevel gear 120. The lower end of the drive bevel gear 120 is connected to the output end of a high-precision, reversible drive motor.

[0032] Furthermore, its workflow is as follows: The drive motor starts, causing the centrally located drive bevel gear 120 to rotate precisely; this rotational motion is transmitted simultaneously, at the same speed, and without slippage to the three transmission bevel gears 132 distributed at 120° angles through the bevel gear pair (drive bevel gear 120 and three transmission bevel gears 132); each transmission bevel gear 132 drives the coaxially connected double-ended screw 133 to rotate synchronously; the rotation of the double-ended screw 133 then drives the two moving seats 134 on it, causing the three sets of outer clamping frames 150 and inner clamping frames 140 to simultaneously move radially toward the center (clamping) or away from the center (releasing). The three sets of clamping frames are symmetrically arranged at a 120° angle and move synchronously, forming an automatic centering system mechanically, which can effectively eliminate machining errors caused by factors such as workpiece blank eccentricity and uneven clamping force.

[0033] To further enhance the flexibility and maintainability of the tooling, the outer clamping frame 150 and the inner clamping frame 140 are not rigidly fixed to the movable base 134, but rather adopt an adjustable and quickly detachable modular design. Specifically, the upper end of the movable base 134 is integrally formed or fixedly connected to a vertically extending upright frame 141. The upper end of the upright frame 141 has a through-hole adjustment groove 142 (usually a T-slot or an oblong hole) of a certain length. The base of the outer clamping frame 150 and the inner clamping frame 140 is designed with mounting parts that mate with the adjustment groove 142. One end of them is movably inserted into the adjustment groove 142 and secured by threads using a high-strength nut and bolt assembly. The advantage of this design is that when the clamping contact surfaces of the outer clamping frame 150 or the inner clamping frame 140 wear and deform due to long-term friction with the hard ball head, causing the clamping center to shift or the clamping force to be insufficient, there is no need to disassemble the entire complex transmission mechanism. Simply loosen the fastening nut and replace it with a new clamping frame module to quickly restore the tooling accuracy. When the production line needs to switch from processing one type of product to a completely different type of product (e.g., from processing steel spherical bearings to processing copper, nylon, or precision-coated spherical bearings), the corresponding material or shape of the clamping frame module can be directly replaced. For example, it can be quickly replaced with a clamping frame with soft claws (copper, aluminum, polyurethane materials) to avoid damaging the processed surface, or replaced with a clamping frame with carbide teeth to provide stronger clamping force. The entire changeover process does not require disassembly of the transmission mechanism, making it fast and efficient.

[0034] The clamping mechanism's structure has been optimized to accommodate the unique geometry of the ball joint in spherical plain bearings. The outer clamping mechanism 150, which contacts the ball joint, is arranged in a V-shape, forming a V-groove; the inner clamping mechanism 140 is designed as a special elliptical rod. Furthermore, both the outer and inner clamping mechanisms 150 and 140 are covered with an elastic pad (such as polyurethane, nylon, or copper sheet) with a certain elasticity and a high coefficient of friction on their contact surfaces with the workpiece. The two inclined surfaces of the V-groove form stable two-point or line contact with the spherical surface of the spherical plain bearing, ensuring that the center of the ball joint always precisely falls on the angle bisector of the V-angle, regardless of variations in the ball joint's diameter within a certain range. This provides additional geometric constraints for automatic centering, improving its reliability. Simultaneously, the elliptical inner clamping mechanism 140's contour curve is specially designed to achieve a more optimized fit with the inner wall or inner curved surface of the spherical plain bearing ball joint, increasing the contact area and preventing workpiece rotation under torque. The elastic pad serves to protect the workpiece surface, increase friction, and compensate for minor deformations.

[0035] As another core functional module, the crossbar fixing part 200 is designed as a multifunctional, adjustable support and clamping unit. Its structure includes: a limiting seat 210 fixedly mounted on the upper end of the base, providing a stable foundation for the entire crossbar fixing part; a fixed seat 220 fixedly mounted on one end of the limiting seat 210; and a movable seat 230 slidably mounted on the upper end of the limiting seat 210, opposite to the fixed seat 220. The bottom of the movable seat 230 is designed with a groove or guide block that precisely matches the guide rail on the limiting seat 210, ensuring its linear movement. The position adjustment of the movable seat 230 is precisely controlled by a horizontally mounted drive screw 250. Specifically, the drive screw 250 passes through a transmission component 233 fixedly mounted at the lower end of the movable seat 230 (with internally machined threads matching the drive screw 250), and both ends of the drive screw 250 are movably mounted on bearing seats at both ends of the limiting seat 210 via high-precision rolling bearings or sliding bearings. When the operator rotates the handwheel at the end of the drive screw 250 or through power drive, the rotational motion is converted by the threaded pair (drive screw 250 and transmission component 233) into a smooth and precise linear reciprocating motion of the movable seat 230 along the guide rail on the limit seat 210. By precisely controlling the number of rotations of the drive screw 250, the distance between the movable seat 230 and the fixed seat 220 can be precisely changed, thereby flexibly adjusting the clamping span of the crossbar to accommodate crossbars of different lengths or clamping positions. In addition, a level 300 for precise observation of two sets of levels is movably mounted on the upper ends of the fixed seat 220 and the movable seat 230. The level 300 is embedded in the precision slots pre-set on the upper ends of the fixed seat 220 and the movable seat 230. Before clamping the workpiece, the operator can quickly and intuitively determine whether the crossbar fixing part 200 is in an ideal level state by visually observing the position of the bubble in the level 300. This design ensures that the workpiece's shank receives a consistent reference point each time it is clamped.

[0036] To achieve rapid loading, unloading, and reliable clamping of the workpiece rod, both the fixed base 220 and the movable base 230 employ the same quick-change clamping structure. They each include a support base 231 for mounting and bearing the main clamping force, and a locking frame 234 rotatably mounted on the upper end of the support base 231 via a hinge or pivot, which engages with the support base 231 to form a closed clamping cavity. Both the support base 231 and the locking frame 234 are locked in place by a quick-release latch 232 on one side. The operator simply needs to pull the latch 232 handle to unlock it, allowing the locking frame 234 to be quickly rotated upwards around its pivot, exposing the V-shaped groove below. At this point, the rod of the spherical bearing can be easily inserted or removed. After inserting the workpiece, closing the locking frame 234 and tightening the latch 232 again completes the rapid and powerful clamping of the entire rod. The entire loading and unloading process requires no tools, significantly reducing auxiliary time.

[0037] To accommodate rods of different diameters and shapes, and to achieve precise positioning and protection of the rods, both the support base 231 and the clamping frame 234 are designed with V-shaped slots at their upper ends. Furthermore, a placement clamp 240 for precisely securing the rod is movably installed inside. The V-shaped slot itself is a self-centering structure; the same V-shaped slot can accommodate circular rods of different diameters within a certain range, enhancing the versatility of the clamp. The placement clamp 240 further improves the precision and flexibility of the clamping.

[0038] Specifically, the placement clamp 240 is a modular assembly. It includes lower seats 241 located on both sides for supporting the lower rod. The lower seats 241 are movably mounted in corresponding grooves on the upper end of the support base 231 and are locked and fixed in position by fastening screws 243 located on both sides. It also includes an upper seat 242 located on the upper end of the clamping frame 234. The upper seat 242 is mounted on the upper end of the clamping frame 234 via threads or a quick-connect fitting. Its position is carefully designed so that when the clamping frame 234 is fully closed, the upper seat 242 can precisely fit above the gap between the two sets of lower seats 241, forming a closed or semi-closed annular / polygonal clamping cavity that matches the shape of the workpiece rod. This design achieves omnidirectional restriction of the workpiece rod in the radial, axial, and circumferential directions, effectively resisting cutting forces and vibrations from any direction and preventing minor displacement or runout of the workpiece during processing. Since the position of the lower seat 241 is adjustable and the upper seat 242 can be quickly replaced, for handles of different shapes (such as round, hexagonal, square, and irregular cross-sections), simply loosen the fastening screw 243 to adjust the spacing of the lower seat 241, or directly replace the upper seat 242 with the corresponding inner hole shape, and you can easily clamp different workpieces without replacing the entire fixture base.

[0039] The complete workflow of the present invention will now be described in conjunction with the above structural description.

[0040] Step 1: Preparation and Condition Check. The operator first makes preliminary adjustments to the fixture according to the specifications of the spherical bearing to be processed (ball head diameter, rod diameter, and length). By rotating the drive screw 250 of the crossbar fixing part 200, the movable seat 230 is adjusted so that the distance between it and the fixed seat 220 matches the clamping point of the workpiece rod. Simultaneously, the bubble of the level 300 is checked and ensured to be centered to guarantee that the entire fixture is level.

[0041] Step 2: Ball Head Centering and Clamping. Place the ball head of the spherical plain bearing in the center of the three clamping sections 130. Start the drive motor connected to the drive bevel gear 120, which rotates the drive bevel gear 120. The drive bevel gear 120 transmits power synchronously to the three double-ended screws 133 through the three transmission bevel gears 132 meshing with it. The rotation of the double-ended screws 133 drives the two moving seats 134 on them, causing the outer clamping frame 150 and the inner clamping frame 140 to move towards the center at the same speed. As the three clamping frames move radially synchronously, they gradually contact and enclose the ball head. Due to the constant velocity centering characteristic of the double-ended screws 133 and the geometric centering effect of the V-groove, regardless of the initial position of the ball head, its geometric center will be automatically corrected to the rotation axis of the mounting plate 110 during the clamping process. When the preset clamping torque or clamping force is reached, the drive motor stops, and the ball head is firmly and precisely centered and clamped.

[0042] Step 3: Auxiliary Support and Locking of the Rod. With the ball joint precisely positioned and clamped, the operator gently places the rod of the spherical bearing onto the lower seat 241 of the placement clamp 240 in the fixing seat 220 of the crossbar fixing part 200. Then, by rotating the drive screw 250, the movable seat 230 is precisely driven to move towards the fixing seat 220 until the lower seat 241 of the placement clamp 240 on the movable seat 230 also contacts the rod. At this point, the rod is stably supported between the two V-shaped support points. Next, the operator moves the latch 232 on the fixing seat 220 and the movable seat 230 to open the locking frame 234, then installs or adjusts the upper seat 242 into place, closes the locking frame 234, and locks the latch 232. At this point, the upper seat 242 and the lower seat 241 together form a closed cavity that fits tightly against the shape of the rod, completely fixing the rod.

[0043] Step 4: Machining and Part Change. At this point, the ball head and rod of the spherical plain bearing are firmly and precisely clamped, forming a highly rigid unit capable of withstanding subsequent milling, drilling, boring, and other cutting operations. After machining, the operator simply needs to pull the latch 232 to open the clamping bracket 234 and slightly reverse the drive screw 250 to release the movable seat 230, allowing for quick removal of the machined workpiece. For the next workpiece, since its specifications are the same, there is usually no need to repeatedly adjust the screw position; simply performing the "place-clamp" actions of steps two and three is sufficient for quick clamping.

[0044] It should be noted that the specific model and specifications of the drive motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0045] The operation and principle of the drive motor are clear to those skilled in the art, and will not be described in detail here.

[0046] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A quick-release spherical plain bearing clamping fixture, comprising a ball head fixing part (100) and a crossbar fixing part (200), characterized in that: The ball head fixing part (100) and the cross bar fixing part (200) installed on one side of the ball head fixing part (100) are both installed on the upper end of the base at the lower end; The ball head fixing part (100) includes a mounting plate (110), the upper end of which is provided with a clamping part (130), and the middle part of which is provided with a driving bevel gear (120).

2. The quick-release spherical bearing clamping fixture according to claim 1, characterized in that: The clamping part (130) includes a positioning frame (131) fixedly installed on the upper end of the mounting plate (110) and an outer clamping frame (150) and an inner clamping frame (140) slidably installed on the upper end of the positioning frame (131). The lower ends of the outer clamping frame (150) and the inner clamping frame (140) are provided with a movable seat (134), and the movable seat (134) is adjusted by a double-ended screw (133) threaded on the lower end.

3. The quick-release spherical bearing clamping fixture according to claim 2, characterized in that: The clamping part (130) is provided in three sets and is evenly distributed on the upper end of the mounting plate (110). The double-headed screw (133) movably installed on the upper end of the positioning frame (131) is equipped with a transmission bevel gear (132) at one end. The transmission bevel gear (132) and the drive bevel gear (120) are threadedly driven.

4. The quick-release spherical bearing clamping fixture according to claim 3, characterized in that: The outer clamping frame (150) and the inner clamping frame (140) are movably installed on the upper end of the upright frame (141) on the upper end of the movable seat (134). The upper end of the upright frame (141) is provided with an adjustment groove (142). One end of the outer clamping frame (150) and the inner clamping frame (140) are movably inserted into the adjustment groove (142) and fastened by a nut thread.

5. The quick-release spherical bearing clamping fixture according to claim 4, characterized in that: The outer clamping frame (150) is arranged in a V-shape, the inner clamping frame (140) is an elliptical rod, and the upper ends of both the outer clamping frame (150) and the inner clamping frame (140) are covered with elastic pads.

6. The quick-release spherical bearing clamping fixture according to claim 5, characterized in that: The crossbar fixing part (200) includes a limiting seat (210) installed on the upper end of the base, and a fixed seat (220) and a movable seat (230) installed on the upper end of the limiting seat (210). The movable seat (230) is slidably installed on the upper end of the limiting seat (210) and its position is adjusted by a drive screw (250) installed in the middle thread. The drive screw (250) is installed through a transmission component (233) fixedly installed at the lower end of the movable seat (230). The two ends of the drive screw (250) are movably installed on both sides of the limiting seat (210) through bearings.

7. The quick-release spherical bearing clamping fixture according to claim 6, characterized in that: A level (300) is movably mounted on the upper end of the fixed base (220) and the movable base (230), and the level (300) is movably mounted inside the slot at the upper end of the fixed base (220) and the movable base (230).

8. The quick-release spherical bearing clamping fixture according to claim 7, characterized in that: The fixed seat (220) and the movable seat (230) include a support seat (231) for installation and fixation and a locking bracket (234) rotatably mounted on the upper end of the support seat (231). The support seat (231) and the locking bracket (234) are both fixed by a latch (232) provided on one side.

9. The quick-release spherical bearing clamping fixture according to claim 8, characterized in that: The upper ends of the support base (231) and the locking frame (234) are arranged in a V-shaped groove, and a placement clip (240) is movably installed inside.

10. The quick-release spherical bearing clamping fixture according to claim 9, characterized in that: The placement clip (240) includes lower seats (241) on both sides, which are movably mounted on the upper end of the support base (231) and fixed by fastening screws (243) on both sides, and an upper seat (242) on the upper end of the clamping frame (234), which is threaded onto the upper end of the clamping frame (234) and positioned at the upper middle part of the two sets of lower seats (241).

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