A positioning and locking tool clamp for an oil cylinder body

Abstract

The present application relates to the technical field of machining, especially to an oil cylinder body positioning and locking tool clamp, comprising a support base, a limiting unit fixedly installed on the support base, and a clamping unit slidably installed on the limiting unit and slidably connected with the support base. First, the oil cylinder is placed on the limiting assembly, the clamping assembly and the extrusion assembly on both sides are driven to move towards each other, the tail end of the oil cylinder is clamped into the clamping assembly, and the output end is inserted into the extrusion assembly; the driving part in the clamping assembly drives the clamping part to segmentally hold the tail part of the oil cylinder, cooperates with the limiting assembly to push, and in combination with the multi-stage segmented clamping of the extrusion assembly, the reliable positioning of the workpiece can be realized. After clamping is completed, the clamping assembly can drive the oil cylinder to rotate, the posture of the workpiece can be flexibly adjusted, multiple processing procedures can be adapted, the defect of poor universality of traditional positioning tools is avoided, the clamping of oil cylinders of multiple specifications and special shapes can be compatible, special clamps do not need to be frequently replaced, the replacement time is shortened, and the processing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a hydraulic cylinder body positioning and locking fixture. Background Technology

[0002] In the machining process of hydraulic cylinder bodies, positioning and locking fixtures are key process equipment. They can quickly clamp and fix the hydraulic cylinder body workpiece, ensuring a stable and accurate relative position between the machine tool, cutting tool and hydraulic cylinder body. This ensures the machining accuracy of various dimensions of the hydraulic cylinder body and is an indispensable device for realizing the large-scale and mechanized machining of hydraulic cylinder bodies.

[0003] Traditional hydraulic cylinder positioning and locking fixtures have poor versatility and are difficult to clamp cylinder bodies of various specifications and shapes. When processing different types of workpieces, it is necessary to replace the entire fixture with a special fixture, which affects processing efficiency. At the same time, the stock of multiple fixtures increases procurement and storage costs. Moreover, after changing the fixture, the clamping accuracy needs to be readjusted, and the debugging process is cumbersome. If the adjustment is not good, the workpiece clamping may become loose or the positioning may be offset, resulting in machining deviations and production quality risks. Summary of the Invention

[0004] In view of the problems existing in the current hydraulic cylinder body positioning and locking fixture, the present invention is proposed.

[0005] Therefore, the present invention provides a hydraulic cylinder body positioning and locking fixture, the purpose of which is to solve the problem of insufficient universality of traditional hydraulic cylinder body positioning and locking fixtures, the need to replace the entire fixture when processing different models of cylinder bodies, which reduces processing efficiency, and the need to readjust the accuracy after replacement. Improper adjustment can easily cause the workpiece to be loosened and the positioning to be offset, resulting in the risk of processing out-of-tolerance quality.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydraulic cylinder body positioning and locking fixture, including a support base, a limiting unit fixedly mounted on the support base, a clamping unit slidably mounted on the limiting unit, and a hydraulic cylinder body slidably mounted on the inner walls of the clamping unit and the limiting unit, wherein the hydraulic cylinder body is slidably connected to the support base; the limiting unit includes a limiting component fixedly mounted on the support base; the clamping unit includes a clamping component slidably mounted on the limiting component and a pressing component slidably mounted on the limiting component, wherein both the clamping component and the pressing component are slidably connected to the support base; the clamping component includes a clamping seat slidably mounted on a support plate, a connecting member fixedly mounted on the clamping seat, a driving member rotatably mounted on the connecting member, and a clamping member slidably mounted on the connecting member, wherein the clamping member is fixedly connected to the driving member; a motor is fixedly mounted on the clamping seat, a rotating rod is fixedly mounted on the output end of the motor, and a connecting member is fixedly mounted on the other end of the rotating rod, wherein the fixing member and the connecting member are rotatably connected.

[0007] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the limiting component includes a limiting member fixedly installed on the support base, a support plate fixedly installed on the limiting member, and a drive rod fixedly installed on the support base, wherein the drive rod is slidably connected to the clamping component and the pressing component.

[0008] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the support base is fixedly installed with a limit rod, and the limit rod is slidably connected to the clamping assembly and the pressing assembly.

[0009] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the connecting member includes a connecting plate fixedly mounted on the clamping seat, a fixing plate fixedly mounted on the connecting plate, a first limiting strip fixedly mounted on the fixing plate, a connecting ring fixedly mounted on the fixing plate, a limiting groove fixedly mounted on the connecting ring, and a second limiting strip fixedly mounted on the connecting ring.

[0010] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the fixing component includes a fixed base fixedly installed on the rotating rod, a return spring fixedly installed on the inner wall of the fixed base, and a fixing block fixedly installed on the other end of the return spring, and the fixed base is rotatably connected to the connecting plate.

[0011] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the driving component includes a second motor fixedly mounted on a fixed plate, a drive wheel fixedly mounted on the output end of the second motor, a synchronous belt fixedly mounted on the drive wheel, a rotating wheel fixedly mounted on the other end of the synchronous belt, a drive ring fixedly mounted on the rotating wheel, and a drive groove fixedly mounted on the drive ring.

[0012] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the clamping component includes a second driving rod slidably installed inside the driving groove, a first moving block fixedly installed on the outer wall of the second driving rod, a first clamping wheel fixedly installed on the first moving block, a second moving block fixedly installed on the other end of the second driving rod, and a second clamping wheel fixedly installed on the second moving block, and the second driving rod is slidably connected to the limiting groove and the driving groove respectively.

[0013] As a preferred embodiment of the cylinder body positioning and locking fixture of the present invention, the extrusion assembly includes an extrusion seat slidably mounted on a support plate, a connecting plate fixedly mounted on the extrusion seat, an adjusting shaft fixedly mounted on the connecting plate, a rotating seat rotatably mounted inside the adjusting shaft, an extrusion rod fixedly mounted on the rotating seat, an extrusion plate fixedly mounted on the extrusion rod, a second return spring fixedly mounted on the outer wall of the extrusion rod, and a fixing ring fixedly mounted on the extrusion plate.

[0014] The beneficial effects of this invention are as follows: First, the hydraulic cylinder is placed on the limiting component, and the clamping components on both sides are driven to move towards each other, so that the tail end of the hydraulic cylinder is engaged with the clamping component and the output end is inserted into the extrusion component. The driving component inside the clamping component drives the clamping component to clamp the tail end of the hydraulic cylinder in stages. With the push of the limiting component and the multi-stage segmented clamping of the extrusion component, the regular hydraulic cylinder workpiece with circular structure at both ends is reliably positioned. It adapts to the circular shape of the workpiece at both ends to achieve close clamping, solving the limitation of not being able to insert irregularly shaped structures. After clamping, the clamping component can drive the hydraulic cylinder to rotate, flexibly adjusting the workpiece posture to adapt to multiple... Compared to the mature three-jaw chuck and ejector pin positioning, this tooling is difficult to simultaneously achieve axial limiting, circumferential posture adjustment, and multi-point uniform clamping. However, this tooling uses segmented multi-point clamping to ensure uniform force on the cylinder housing, avoiding indentations and deformation, and preventing workpiece loosening and displacement that could cause machining deviations. The tooling is compatible with various specifications of round end cylinders, eliminating the need for frequent changes of special fixtures, shortening changeover time, reducing fixture procurement and storage costs, eliminating the need for repeated precision adjustments, and enabling quick workpiece loading and unloading. It can be adapted to automated production lines, reducing manual labor intensity and improving processing efficiency and stability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the machining structure of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall structure of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0018] Figure 3 This is a side view of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0019] Figure 4 This is a schematic diagram of the clamping assembly structure of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0020] Figure 5 This is a cross-sectional schematic diagram of the clamping component of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0021] Figure 6 This is an exploded structural diagram of the clamping assembly of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0022] Figure 7This is an exploded cross-sectional view of the clamping assembly of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0023] Figure 8 This is a schematic diagram of the front structure of the clamping component of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0024] Figure 9 This is a schematic diagram of the extrusion assembly structure of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0025] Figure 10 This is an exploded structural diagram of the extrusion assembly of the hydraulic cylinder body positioning and locking fixture of the present invention.

[0026] Figure 11 This is a schematic diagram of the overall structure of the cylinder body of the cylinder positioning and locking fixture of the present invention.

[0027] Figure 12 This is a top view of the cylinder body of the hydraulic cylinder positioning and locking fixture of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Limiting unit; 21. Limiting assembly; 211. Limiting component; 212. Drive rod one; 213. Support plate; 214. Placement rack; 215. Limiting rod; 3. Clamping unit; 31. Clamping assembly; 311. Clamping base; 312. Motor one; 313. Rotating rod; 314. Fixing component; 3141. Fixed base; 3142. Return spring one; 3143. Fixing block; 315. Connecting component; 3151. Connecting plate; 3152. Fixing plate; 3153. Limiting strip one; 3154. Connecting ring; 3155. Limiting groove; 3156. Limiting clip 2; 316, Driving component; 3161, Motor 2; 3162, Drive wheel; 3163, Synchronous belt; 3164, Rotating wheel; 3165, Drive ring; 3166, Drive groove; 317, Clamping component; 3171, Drive rod 2; 3172, Moving block 1; 3173, Clamping wheel 1; 3174, Moving block 2; 3175, Clamping wheel 2; 32, Extrusion assembly; 321, Extrusion seat; 322, Connecting plate; 323, Adjusting shaft; 324, Rotating seat; 325, Extrusion rod; 326, Return spring 2; 327, Extrusion plate; 328, Fixing ring; 4, Hydraulic cylinder body. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1, referring to Figure 1 - Figure 2The first embodiment of the present invention provides a hydraulic cylinder body positioning and locking fixture. This device includes: a support base 1, a limiting unit 2 fixedly installed on the support base 1, a clamping unit 3 slidably installed on the limiting unit 2, and a hydraulic cylinder body 4 slidably installed on the inner wall of the clamping unit 3 and the limiting unit 2, and the hydraulic cylinder body 4 is slidably connected to the support base 1.

[0031] The limiting unit 2 includes a limiting component 21 fixedly installed on the support base 1. This component is used to place the hydraulic cylinder and complete the initial positioning of the workpiece. At the same time, it can provide pushing and pressing force to assist the hydraulic cylinder in completing the axial locking and positioning.

[0032] Furthermore, the clamping unit 3 includes a clamping component 31 slidably mounted on the limiting component 21, and a pressing component 32 slidably mounted on the limiting component 21, and both the clamping component 31 and the pressing component 32 are slidably connected to the support base 1; the clamping component 31 is provided with a driving component 316 and a clamping component 317 inside, the driving component 316 can drive the clamping component 317 to clamp the outer wall of the cylinder tail end in segments and at multiple points, and the clamping component 31 can also drive the cylinder to rotate and adjust the processing angle; the pressing component 32 has a multi-stage segmented clamping structure, which is used to achieve multi-point contact and limiting of the cylinder output end, and to limit the radial and axial displacement of the cylinder.

[0033] During use, the hydraulic cylinder is first placed on the limiting component 21 for initial positioning. Then, the clamping components 31 and the extrusion component 32 on both sides of the limiting component 21 are driven to move synchronously towards each other, so that the tail end of the hydraulic cylinder is accurately engaged in the clamping component 31, and the output end of the hydraulic cylinder is smoothly inserted into the extrusion component 32. Subsequently, the driving component 316 in the clamping component 31 drives the clamping component 317 to move synchronously, clamping the outer wall of the tail end of the hydraulic cylinder in multiple segments. Combined with the pushing and extruding action of the limiting component 21, the tail end of the hydraulic cylinder is reliably locked inside the clamping component 31. The output end of the hydraulic cylinder achieves multi-point contact and limitation with the help of the multi-stage segmented clamping structure of the extrusion component 32, restricting the radial and axial displacement of the hydraulic cylinder and ensuring all-round protection. To ensure the reliability of hydraulic cylinder clamping, after the workpiece is clamped in place and the positioning accuracy is confirmed to meet the standard, the clamping component 31 can drive the hydraulic cylinder to rotate, flexibly adjusting the workpiece processing position. After processing, simply drive the clamping component 31 and the pressing component 32 to move away from each other to release the workpiece, thus completing the unloading. By adopting a segmented clamping structure, the force on the hydraulic cylinder shell is evenly distributed, which can effectively avoid the outer wall indentation and deformation caused by clamping stress concentration, ensuring the processing quality of the workpiece. The entire clamping process is smooth and continuous, enabling rapid loading and unloading of workpieces, adapting to automated continuous production lines, reducing manual intervention, reducing the intensity of manual operation, and continuously improving the positioning stability and processing consistency during hydraulic cylinder processing.

[0034] Example 2, refer to Figure 1 - Figure 8This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the clamping assembly 31 includes a clamping seat 311 slidably mounted on the support plate 213, a connector 315 fixedly mounted on the clamping seat 311, a driving member 316 rotatably mounted on the connector 315, and a clamping member 317 slidably mounted on the connector 315, and the clamping member 317 is fixedly connected to the driving member 316. The various structures cooperate with each other to realize automatic positioning, elastic pre-tightening, multi-point segmented clamping and angle rotation adjustment of the hydraulic cylinder workpiece, so as to meet the stable clamping and processing requirements of hydraulic cylinders of different specifications and shapes.

[0035] Compared to Embodiment 1, a motor 312 is further fixedly installed on the clamping base 311, a rotating rod 313 is fixedly installed at the output end of the motor 312, and a fixing member 314 is fixedly installed at the other end of the rotating rod 313, and the fixing member 314 is rotatably connected to the connecting member 315.

[0036] Furthermore, the connector 315 includes a connecting plate 3151 fixedly mounted on the clamping seat 311, a fixing plate 3152 fixedly mounted on the connecting plate 3151, a first limiting strip 3153 fixedly mounted on the fixing plate 3152, a connecting ring 3154 fixedly mounted on the fixing plate 3152, a limiting groove 3155 fixedly mounted on the connecting ring 3154, and a second limiting strip 3156 fixedly mounted on the connecting ring 3154.

[0037] Furthermore, the fixing member 314 includes a fixing base 3141 fixedly mounted on the rotating rod 313, a return spring 3142 fixedly mounted on the inner wall of the fixing base 3141, and a fixing block 3143 fixedly mounted on the other end of the return spring 3142, and the fixing block 3143 is slidably connected to the fixing base 3141.

[0038] Furthermore, the driving component 316 includes a second motor 3161 fixedly mounted on the fixed plate 3152, a drive wheel 3162 fixedly mounted on the output end of the second motor 3161, a synchronous belt 3163 connected to the drive wheel 3162, a rotating wheel 3164 connected to the other end of the synchronous belt 3163, a drive ring 3165 fixedly mounted on the rotating wheel 3164, and a drive groove 3166 fixedly opened on the drive ring 3165. The second motor 3161 drives the drive wheel 3162 to rotate, and the synchronous belt 3163 drives the rotating wheel 3164 and the drive ring 3165 to rotate synchronously on the surface of the connecting ring 3154. Relying on the cooperation between the drive groove 3166 and the limiting groove 3155, a stable drive and guiding constraint are provided for the closing and clamping action of the clamping component 317.

[0039] Furthermore, the clamping member 317 includes a second drive rod 3171 slidably mounted inside the drive groove 3166, a first movable block 3172 fixedly mounted on the outer wall of the second drive rod 3171, a first clamping wheel 3173 fixedly mounted on the first movable block 3172, a second movable block 3174 fixedly mounted on the other end of the second drive rod 3171, and a second clamping wheel 3175 fixedly mounted on the second movable block 3174. The second drive rod 3171 is respectively connected to the limiting groove 3166. 55 and drive groove 3166 are slidably connected. During the rotation of drive ring 3165, drive rod 2 3171 is guided by groove body to retract towards the center, driving moving block 1 3172 to slide along limit strip 2 3156 and moving block 2 3174 to slide along limit strip 1 3153. Finally, clamping wheel 1 3173 and clamping wheel 2 3175 form multi-point segmented ring clamping on the outer wall of the cylinder, with uniform force, which can effectively avoid cylinder body indentation and deformation, and strong clamping stability.

[0040] During use, the cylinder to be processed is first placed stably on the limiting component 21 to complete the initial bearing and positioning. Then, the limiting component 21 drives the clamping seat 311 to move towards the middle of the cylinder tail end, so that the cylinder tail end is accurately inserted into the drive component 316 and the connecting component 315, and simultaneously locked into the fixed base 3141. At this time, the return spring 3142 and the fixing block 3143 generate elastic extrusion force, so that the fixing block 3143 is tightly attached to the outer wall of the cylinder tail end, completing the initial axial positioning and pre-fixing of the workpiece, which can effectively prevent the workpiece from shifting and shaking in the early stage of clamping.

[0041] After pre-positioning is completed, the second motor 3161 drives the drive wheel 3162 to rotate. The drive wheel 3162 drives the rotating wheel 3164 to rotate synchronously through the synchronous belt 3163, thereby driving the drive ring 3165 to rotate smoothly on the surface of the connecting ring 3154. Under the dual limiting and guiding action of the drive groove 3166 and the limiting groove 3155, the drive ring 3165 drives the internal drive rod 3171 to retract towards the center. Simultaneously, the drive rod 3171 is pushed to retract towards the center by the limiting and guiding action of the groove, which drives the moving block 1. 3172 slides along the second limiting strip 3156, and the second moving block 3174 slides along the first limiting strip 3153, clamping against the outer wall of the cylinder. The first moving block 3172 slides along the limiting groove 3155, and the second moving block 3174 is precisely guided along the first limiting strip 3153, ensuring that the clamping action on both sides is stable and synchronous. Finally, the first clamping wheel 3173 and the second clamping wheel 3175 form a multi-point segmented ring clamping of the outer wall of the cylinder, which is uniform in force and stable in clamping, avoiding damage to the workpiece caused by single-point extrusion.

[0042] After the workpiece is precisely locked and positioned, motor 312 is started. Motor 312 drives the rotating rod 313 to rotate the fixed base 3141 along the surface of the connecting plate 3151. At the same time, the return spring 3142 and the fixing block 3143 inside the fixed base 3141 rotate synchronously with the clamped and fixed oil cylinder. The workpiece processing angle and posture can be flexibly adjusted to adapt to multiple processing steps such as turning, grinding, and drilling, thus improving processing convenience. After all the processing steps of the oil cylinder are completed, the mechanism is reversed and reset to release the workpiece and quickly complete the unloading operation.

[0043] Meanwhile, the inner cavity diameter of the fixed base 3141 matches the outer diameter of the tail end of the cylinder body 4, and the outer diameter of the tail end of the cylinder body 4 is interference-fitted with the inner cavity assembly diameter of the fixed base 3141; the clamping arc surface of the fixed block 3143 has an arc-shaped clamping position adapted to the outer wall of the tail end of the cylinder body 4, and the inner diameter of the arc-shaped clamping position is slightly smaller than the outer diameter of the tail end of the cylinder body 4; under the drive of the drive rod 212, the clamping assembly 31 and the extrusion assembly 32 move towards the middle of the cylinder body 4, so that the output end of the cylinder body 4 is inserted into the extrusion assembly 32, and the tail end of the cylinder body 4 is guided by the chamfered surface of the fixing member 314 and inserted into the clamping assembly 3143. In the internal fixing component 314, the outer wall of the cylinder body 4 presses against the fixing block 3143 inside the fixing base 3141. The fixing block 3143 simultaneously presses against the return spring 3142, causing the return spring 3142 to deform and generate a reaction force, which drives the fixing block 3143 to complete the initial positioning and clamping of the cylinder body 4. The preload generated by the spring deformation completes the initial fixing and clamping of the tail end of the cylinder body 4, realizing radial limit positioning. This not only improves the efficiency of continuous processing, but also eliminates the tedious process of repeatedly adjusting the accuracy after mold change, avoiding the problems of workpiece loosening, positioning offset and processing deviation caused by adjustment deviation.

[0044] The remaining structure is the same as that in Example 1.

[0045] Example 3, referring to Figure 1 - Figure 12 This is the third embodiment of the present invention, which differs from the second embodiment in that: the limiting component 21 includes a limiting member 211 fixedly installed on the support base 1, a support plate 213 fixedly installed on the limiting member 211, and a drive rod 212 fixedly installed on the support base 1. The drive rod 212 is slidably connected to the clamping component 31 and the extrusion component 32. The limiting member 211 serves as a basic bearing structure, used to stably support the support plate 213 and provide a flat sliding mounting reference for the clamping and extrusion mechanisms. The drive rod 212 serves as a core power driving component, which can synchronously drive the clamping component 31 and the extrusion component 32 to slide opposite each other along the surface of the support plate 213, realize automated feeding and alignment, provide stable power input for the clamping operation of the hydraulic cylinder, and ensure that the two sets of components operate synchronously.

[0046] Compared to Embodiment 2, the support base 1 is also fixedly installed with a limiting rod 215, and the limiting rod 215 is slidably connected to the clamping assembly 31 and the pressing assembly 32. The limiting rod 215 cooperates with the drive rod 212 to precisely constrain and guide the movement trajectory of the two sets of mechanisms during the sliding feed of the clamping assembly 31 and the pressing assembly 32, effectively avoiding the problems of deviation, shaking, and jamming during the sliding process of the mechanism.

[0047] Furthermore, the extrusion assembly 32 includes an extrusion seat 321 slidably mounted on the support plate 213, a connecting plate 322 fixedly mounted on the extrusion seat 321, an adjusting shaft 323 fixedly mounted on the connecting plate 322, a rotating seat 324 rotatably mounted inside the adjusting shaft 323, an extrusion rod 325 fixedly mounted on the rotating seat 324, an extrusion plate 327 fixedly mounted on the extrusion rod 325, a return spring 326 fixedly mounted on the outer wall of the extrusion rod 325, and a retaining ring 328 fixedly mounted on the extrusion plate 327.

[0048] During use, the cylinder body 4 to be processed is first placed stably on the placement frame 214 to complete the initial bearing and positioning. The support part of the placement frame 214 can fit the outer circle of the cylinder and rotate synchronously with the cylinder body 4 to avoid interference or obstruction of the cylinder's rotational movement. Then, the drive rod 212 is started, which drives the clamping component 31 and the extrusion component 32 on the support plate 213 to move synchronously toward the cylinder in the middle of the placement frame 214. During the movement, the limit rod 215 slides synchronously to limit the movement of the clamping component 31 and the extrusion component 32, ensuring that the two sets of components slide smoothly, accurately and without deviation along the support plate 213, thus completing the initial alignment preparation.

[0049] After the mechanism is aligned, the clamping assembly 31 first clamps and locks the tail end of the cylinder body 4, while the output end of the cylinder body 4 is inserted into the fixed ring 328. Simultaneously with the rotation of the extrusion assembly 32, the output end of the cylinder also rotates synchronously within the fixed ring 328, enabling the extrusion assembly 32 to rotate together with the clamping assembly 31 and the cylinder body 4, eliminating the processing limitations caused by the fixed extrusion assembly. The extrusion rod 325, extrusion plate 327, and fixed ring 328 are precisely engaged and sleeved on the outside of the cylinder output end. The adjusting shaft 323 and the rotating seat 324 are mainly used to compensate for workpiece... Manufacturing errors and assembly gaps are minimized to achieve micro-adaptive adjustment of the clamping and fitting position, rather than large-range free angle adjustment. The coaxiality of the hydraulic cylinder clamping is ensured by the linear guiding constraint of the limit rod 215, the bidirectional alignment and limiting of the clamping component 31 and the extrusion component 32, and the precise fitting and positioning of the clamping parts, extrusion plate and the outer circular surfaces at both ends of the hydraulic cylinder. Unlike the method of simply relying on the machine tool centering mechanism to achieve centering, this fixture completes the bidirectional clamping constraint at both ends of the hydraulic cylinder while ensuring coaxial positioning accuracy, suppressing workpiece movement during the processing, thereby achieving rapid, concentric and balanced clamping and positioning of the entire hydraulic cylinder.

[0050] The remaining structure is the same as that in Example 2.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A hydraulic cylinder body positioning and locking fixture, comprising a support base (1), a limiting unit (2) fixedly mounted on the support base (1), a clamping unit (3) slidably mounted on the limiting unit (2), and a hydraulic cylinder body (4) slidably mounted on the inner walls of the clamping unit (3) and the limiting unit (2), wherein the hydraulic cylinder body (4) is slidably connected to the support base (1); the limiting unit (2) comprises a limiting component (21) fixedly mounted on the support base (1), characterized in that: The clamping unit (3) includes a clamping component (31) slidably mounted on the limiting component (21) and a pressing component (32) slidably mounted on the limiting component (21), and both the clamping component (31) and the pressing component (32) are slidably connected to the support base (1); The clamping assembly (31) includes a clamping seat (311) slidably mounted on a support plate (213), a connector (315) fixedly mounted on the clamping seat (311), a drive member (316) rotatably mounted on the connector (315), and a clamping member (317) slidably mounted on the connector (315), wherein the clamping member (317) is fixedly connected to the drive member (316); A motor (312) is fixedly installed on the clamping base (311). A rotating rod (313) is fixedly installed at the output end of the motor (312). A fixing member (314) is fixedly installed at the other end of the rotating rod (313), and the fixing member (314) is rotatably connected to the connecting member (315).

2. The cylinder body positioning and locking fixture according to claim 1, characterized in that: The limiting assembly (21) includes a limiting member (211) fixedly installed on the support base (1), a support plate (213) fixedly installed on the limiting member (211), and a drive rod (212) fixedly installed on the support base (1), and the drive rod (212) is slidably connected to the clamping assembly (31) and the pressing assembly (32).

3. The cylinder body positioning and locking fixture according to claim 2, characterized in that: The support base (1) is fixedly installed with a limiting rod (215), and the limiting rod (215) is slidably connected to the clamping assembly (31) and the extrusion assembly (32).

4. The hydraulic cylinder body positioning and locking fixture according to claim 3, characterized in that: The connector (315) includes a connecting plate (3151) fixedly mounted on the clamping seat (311), a fixing plate (3152) fixedly mounted on the connecting plate (3151), a first limiting strip (3153) fixedly mounted on the fixing plate (3152), a connecting ring (3154) fixedly mounted on the fixing plate (3152), a limiting groove (3155) fixedly mounted on the connecting ring (3154), and a second limiting strip (3156) fixedly mounted on the connecting ring (3154).

5. The cylinder body positioning and locking fixture according to claim 4, characterized in that: The fixing component (314) includes a fixed base (3141) fixedly mounted on the rotating rod (313), a return spring (3142) fixedly mounted on the inner wall of the fixed base (3141), and a fixing block (3143) fixedly mounted on the other end of the return spring (3142), and the fixed base (3141) is rotatably connected to the connecting plate (3151).

6. The cylinder body positioning and locking fixture according to claim 5, characterized in that: The driving component (316) includes a second motor (3161) fixedly mounted on a fixed plate (3152), a drive wheel (3162) fixedly mounted on the output end of the second motor (3161), a timing belt (3163) fixedly mounted on the drive wheel (3162), a rotating wheel (3164) fixedly mounted on the other end of the timing belt (3163), a drive ring (3165) fixedly mounted on the rotating wheel (3164), and a drive groove (3166) fixedly mounted on the drive ring (3165).

7. The cylinder body positioning and locking fixture according to claim 6, characterized in that: The clamping member (317) includes a second drive rod (3171) slidably installed inside the drive groove (3166), a first moving block (3172) fixedly installed on the outer wall of the second drive rod (3171), a first clamping wheel (3173) fixedly installed on the first moving block (3172), a second moving block (3174) fixedly installed on the other end of the second drive rod (3171), and a second clamping wheel (3175) fixedly installed on the second moving block (3174). The second drive rod (3171) is slidably connected to the limiting groove (3155) and the drive groove (3166) respectively.

8. The hydraulic cylinder body positioning and locking fixture according to claim 7, characterized in that: The extrusion assembly (32) includes an extrusion seat (321) slidably mounted on a support plate (213), a connecting plate (322) fixedly mounted on the extrusion seat (321), an adjusting shaft (323) fixedly mounted on the connecting plate (322), a rotating seat (324) rotatably mounted inside the adjusting shaft (323), an extrusion rod (325) fixedly mounted on the rotating seat (324), an extrusion plate (327) fixedly mounted on the extrusion rod (325), a second return spring (326) fixedly mounted on the outer wall of the extrusion rod (325), and a retaining ring (328) fixedly mounted on the extrusion plate (327).

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