Fixing tool for oil cylinder barrel machining

By designing automated hydraulic cylinder machining fixtures, the problems of poor fixation and debris splashing associated with traditional fixtures have been solved, enabling efficient and precise multi-directional machining and improving production efficiency and product quality.

CN223790012UActive Publication Date: 2026-01-13SHANDONG TIEYI PRECISION STEEL TUBE CO LTD
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Patent Information

Application Number
CN202520297602.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2026-01-13
Estimated Expiration
2035-02-24

AI Technical Summary

Technical Problem

Traditional hydraulic cylinder machining fixtures suffer from poor fixation, cumbersome operation, debris flying everywhere, and difficulty in achieving flexible machining in multiple directions.

Method used

A fixture comprising a protective box, hydraulic rod, motor, and lead screw was designed to automate clamping, translation, rotation, and lifting, while protective measures prevent debris from splashing.

Benefits of technology

It improves processing accuracy and efficiency, reduces equipment damage and maintenance costs, shortens processing cycles, and ensures a clean working environment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223790012U_ABST
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Abstract

The utility model provides a fixing tool for oil cylinder barrel machining, and relates to the technical field of oil cylinder machining. Two sets of protection plates are installed at the front end of the protection box through hinges, a base is installed in the protection box through bolts, a placement table is fixed to the base, two sets of bottom plates are installed on the placement table through bolts, cylinder bases are installed on the two sets of bottom plates through bolts, and first hydraulic rods are installed on the two sets of cylinder bases through bolts; according to the tool, the first lead screw, the first motor, the supporting plate and the rail plate matched with the first lead screw, the first motor and the supporting plate and the rail plate can achieve rapid translation of the whole tool; a second lead screw and a second motor on the transverse plate are combined with a movable base, and the transverse coordinate of the machining position can be flexibly adjusted. And a third lead screw and a third motor on the moving seat control the lifting seat, the machining height is accurately controlled, all-directional automatic adjustment is achieved, frequent manual assembling and disassembling and repositioning are not needed, manpower is saved, the machining period is greatly shortened, and the production efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder processing technology, and in particular to a fixed tooling for hydraulic cylinder barrel processing. Background Technology

[0002] In today's booming field of machining, with the continuous acceleration of industrialization, various mechanical equipment are making great strides towards higher precision and performance. Hydraulic equipment, as a core power output device in many industrial scenarios, has an increasingly wide range of applications. From large-scale engineering machinery to precision manufacturing equipment, the stable operation of hydraulic systems is indispensable. The hydraulic cylinder, as a key component in hydraulic equipment that bears pressure and transmits power, is like the "skeleton" of the hydraulic system. Hydraulic cylinders require a series of meticulous machining processes to achieve the required precision and performance standards, thereby ensuring the accurate and reliable operation of the entire hydraulic system. This utility model is a fixed tooling for machining hydraulic cylinders.

[0003] Traditional hydraulic cylinder machining processes often suffer from numerous drawbacks in tooling and fixture design. Firstly, simple manual clamps are frequently used to secure the cylinder. These clamps not only offer poor stability, making the cylinder prone to displacement during machining and leading to dimensional deviations, but are also cumbersome, time-consuming, and labor-intensive, significantly reducing production efficiency. Secondly, the lack of effective protective measures results in the scattering of machining debris, polluting the work environment and potentially embedding it in the cylinder surface or precision components of the machining equipment, affecting product quality and increasing equipment maintenance costs. Furthermore, traditional tooling struggles to achieve flexible, multi-directional machining of the cylinder. Changing the machining angle or position typically requires manual reloading and adjustment, further extending the machining cycle. Utility Model Content

[0004] This disclosure relates to a fixed fixture for machining hydraulic cylinder barrels, in order to solve the technical problems mentioned in the background art.

[0005] In a first aspect, this disclosure provides a fixed fixture for machining hydraulic cylinder barrels, specifically including: a protective box;

[0006] Two sets of protective plates are mounted on the front end of the protective box via hinges. Inside the protective box, a base is bolted in, and a placement platform is fixed on the base. Two sets of base plates are bolted onto the placement platform, and cylinder seats are bolted onto each of the two base plates. A hydraulic rod is bolted onto each of the two cylinder seats. Two sets of movable plates slide on the placement platform, and the piston rods of the two sets of hydraulic rods are fixedly connected to the two sets of movable plates. Drive motors are bolted onto each of the two sets of movable plates, and the shafts of the two drive motors are fixed with… It has a contact head, and two sets of through slots are set on the placement platform. Two sets of feeding cylinders are fixed at the lower end of the placement platform. The upper ends of the two sets of feeding cylinders are respectively connected to the lower ends of the two sets of through slots on the placement platform. A mounting seat is installed on the placement platform by bolts. The mounting seat is located between the two sets of feeding cylinders. Two sets of side plates are installed on the mounting seat by bolts. The lower ends of the two sets of side plates are bolted to the No. 2 hydraulic rod. Two sets of clamping seats are installed between the two sets of side plates by pins. The lower ends of the two sets of clamping seats are connected to the upper end of the piston rod of the No. 2 hydraulic rod by pins.

[0007] In at least some embodiments,

[0008] A lead screw is mounted on the lower end of the base via a bearing. A motor mount is mounted on the rear end of the base via bolts. A motor is mounted on the motor mount via bolts. The output shaft of the motor is connected to the rear end of the lead screw. A rail plate is mounted on both the left and right ends of the base via bolts. Support plates slide on the rail plates on both the left and right sides of the base. Connecting plates are mounted on the lower ends of the two sets of support plates via bolts. The connecting plates are threadedly engaged with the lead screw.

[0009] In at least some embodiments,

[0010] The upper ends of the two sets of support plates are bolted with transverse plates, and two sets of No. 2 rail plates are bolted on the transverse plates. Movable seats are mounted on the two sets of No. 2 rail plates, and No. 2 lead screws are mounted on the transverse plates via bearings. The No. 2 lead screws are threadedly engaged with the movable seats. No. 2 motor seats are bolted on the support plate near the left side of the base.

[0011] In at least some embodiments,

[0012] The No. 2 motor is mounted on the No. 2 motor base by bolts, and the output shaft of the No. 2 motor is connected to the left end of the No. 2 lead screw.

[0013] In at least some embodiments,

[0014] Two sets of No. 3 rail plates are bolted to the movable seat. A lifting seat slides on the two sets of No. 3 rail plates. A No. 3 lead screw is mounted on the movable seat through a bearing. The No. 3 lead screw is threadedly engaged with the lifting seat.

[0015] In at least some embodiments,

[0016] The upper end of the movable base is bolted to a No. 3 motor mount, the upper end of the No. 3 motor mount is bolted to a No. 3 motor, and the output shaft of the No. 3 motor is connected to the upper end of the No. 3 lead screw.

[0017] In at least some embodiments,

[0018] The front end of the lifting platform is bolted to the processing body.

[0019] This utility model provides a fixed fixture for machining hydraulic cylinder barrels, which has the following beneficial effects:

[0020] In this utility model, the design of the protective box with protective plate effectively isolates the processing area, preventing processing debris from scattering everywhere. This not only creates a clean working environment but also prevents debris from damaging the cylinder barrel and precision parts of the equipment, reducing equipment failure rate, minimizing maintenance costs and downtime, and ensuring production continuity.

[0021] Furthermore, in this invention, the No. 1 lead screw, No. 1 motor, and the matching support plate and rail plate structure under the base can realize the rapid translation of the entire tooling; the No. 2 lead screw, No. 2 motor, and moving seat combination on the horizontal plate can flexibly adjust the horizontal coordinate of the processing position; the No. 3 lead screw and No. 3 motor on the moving seat control the lifting seat to precisely control the processing height. Such comprehensive automated adjustment eliminates the need for frequent manual loading, unloading, and repositioning, which not only saves manpower but also significantly shortens the processing cycle and improves production efficiency.

[0022] Furthermore, in this invention, when clamping the cylinder is required, extending the second hydraulic rod allows the two sets of clamping seats to firmly clamp the cylinder. This mechanical structure ensures that the cylinder is firmly fixed during the initial processing preparation stage, laying the foundation for subsequent precise processing. When the cylinder needs to be rotated for all-around processing, extending the first hydraulic rod allows the two sets of contact heads to contact the left and right ends of the cylinder, while retracting the second hydraulic rod releases the two sets of clamping seats from the cylinder. Then, operating the two sets of drive motors easily achieves the rotation of the cylinder, breaking the limitation of traditional tooling that can only process at a fixed angle. This allows the processing tool to perform uniform and precise processing on all surfaces of the cylinder, further improving the processing quality of the product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0024] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0025] In the attached diagram:

[0026] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0027] Figure 2 A schematic diagram of the structure at the bottom of the base of this application is shown;

[0028] Figure 3 A structural schematic diagram of the transverse plate portion of this application is shown;

[0029] Figure 4 This application shows Figure 3 A magnified structural diagram of part A in the middle;

[0030] Figure 5 This application shows Figure 1 A magnified structural diagram of part B in the middle section;

[0031] Figure 6 A structural schematic diagram of the placement platform portion of this application is shown;

[0032] Figure 7 A schematic diagram of the mounting base portion of this application is shown.

[0033] List of reference numerals

[0034] 1. Protective box; 11. Protective panel;

[0035] 2. Base; 21. Rail Plate No. 1; 22. Support Plate; 221. Connecting Plate; 222. Horizontal Plate; 223. Rail Plate No. 2; 224. Lead Screw No. 2; 225. Motor Mount No. 2; 226. Motor No. 2; 23. Lead Screw No. 1; 231. Motor Mount No. 1; 232. Motor No. 1; 24. Moving Seat; 241. Rail Plate No. 3; 242. Lifting Seat; 243. Lead Screw No. 3; 244. Motor Mount No. 3; 245. Motor No. 3; 25. Processor Body;

[0036] 3. Placement platform; 31. Base plate; 311. Cylinder seat; 312. Hydraulic rod No. 1; 32. Movable plate; 321. Drive motor; 322. Contact head; 33. Feeding cylinder; 34. Mounting seat; 341. Side plate; 3411. Clamping seat; 342. Hydraulic rod No. 2. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] Example 1: Please refer to Figures 1 to 7 :

[0039] This utility model proposes a fixed fixture for machining hydraulic cylinder barrels, including: a protective box 1;

[0040] Two sets of protective plates 11 are mounted on the front end of the protective box 1 via hinges. A base 2 is bolted to the inside of the protective box 1, and a placement platform 3 is fixed to the base 2. Two sets of base plates 31 are bolted to the placement platform 3, and cylinder seats 311 are bolted to each of the two sets of base plates 31. A hydraulic rod 312 is bolted to each of the two sets of cylinder seats 311. Two sets of movable plates 32 slide on the placement platform 3. The piston rods of the two sets of hydraulic rods 312 are fixedly connected to the two sets of movable plates 32 respectively. A drive motor 321 is bolted to each of the two sets of movable plates 32, and a contact head is fixed to the shaft of each of the two sets of drive motors 321. 322, The placement platform 3 is provided with two sets of through slots. The lower end of the placement platform 3 is fixed with two sets of feeding cylinders 33. The upper ends of the two sets of feeding cylinders 33 are respectively connected to the lower ends of the two sets of through slots on the placement platform 3. The placement platform 3 is installed with a mounting seat 34 by bolts. The mounting seat 34 is located between the two sets of feeding cylinders 33. The mounting seat 34 is installed with two sets of side plates 341 by bolts. The lower ends of the two sets of side plates 341 are installed with a second hydraulic rod 342 by bolts. The two sets of clamping seats 3411 are installed between the two sets of side plates 341 by pins. The lower ends of the two sets of clamping seats 3411 are connected to the upper end of the piston rod of the second hydraulic rod 342 by pins.

[0041] In this embodiment of the disclosure,

[0042] A lead screw 23 is mounted on the lower end of the base 2 via a bearing. A motor mount 231 is mounted on the rear end of the base 2 via bolts. A motor 232 is mounted on the motor mount 231 via bolts. The output shaft of the motor 232 is connected to the rear end of the lead screw 23. A rail plate 21 is mounted on both the left and right ends of the base 2 via bolts. Support plates 22 slide on the rail plates 21 on both the left and right sides of the base 2. A connecting plate 221 is mounted on the lower end of the two sets of support plates 22 via bolts. The connecting plate 221 is threadedly engaged with the lead screw 23. Its function is that when the motor 232 starts running, its output shaft drives the lead screw 23 to rotate, and the connecting plate 221 will drive the two sets of support plates 22 to move synchronously and smoothly along the rail plate 21.

[0043] Example 2, based on Example 1,

[0044] A transverse plate 222 is bolted to the upper end of the two sets of support plates 22. Two sets of second-order rail plates 223 are bolted to the transverse plates 222. A movable seat 24 is mounted on the two sets of second-order rail plates 223. A second-order lead screw 224 is mounted on the transverse plate 222 via bearings. The second-order lead screw 224 is threadedly engaged with the movable seat 24. A second-order motor seat 225 is bolted to the support plate 22 near the left side of the base 2. A second-order motor 226 is bolted to the second-order motor seat 225. The output shaft of the second-order motor 226 is connected to the left end of the second-order lead screw 224. Its function is: when the second-order motor 226 starts, its output shaft drives the second-order lead screw 224 to rotate. Based on the principle of threaded transmission, the movable seat 24 will move precisely laterally along the second-order rail plate 223.

[0045] Example 3, based on Examples 1 and 2,

[0046] Two sets of No. 3 rail plates 241 are bolted to the movable seat 24. A lifting seat 242 slides on the two sets of No. 3 rail plates 241. A No. 3 lead screw 243 is mounted on the movable seat 24 via bearings. The No. 3 lead screw 243 is threadedly engaged with the lifting seat 242. A No. 3 motor seat 244 is bolted to the upper end of the movable seat 24. A No. 3 motor 245 is bolted to the upper end of the No. 3 motor seat 244. The output shaft of the No. 3 motor 245 is connected to the upper end of the No. 3 lead screw 243. The front end of the lifting seat 242 is bolted to the front end of the machine body 25. Its function is: when the No. 3 motor 245 is started, its output shaft drives the No. 3 lead screw 243 to rotate. According to the threaded transmission mechanism, the lifting seat 242 will move up and down precisely along the No. 3 rail plate 241.

[0047] The working principle of this embodiment is as follows: When preparing to process the cylinder barrel, the cylinder barrel is first placed on the placement platform 3. By extending the second hydraulic rod 342, the piston rod pushes the two sets of clamping seats 3411 connected to it, causing them to rotate around the pin shaft and clamp the cylinder barrel, completing the initial fixation. If it is necessary to adjust the horizontal position of the cylinder barrel, the first motor 232 is started, driving the first lead screw 23 to rotate. The support plate 22 will move horizontally smoothly along the first rail plate 21, thereby driving the entire tooling and the cylinder barrel fixed on it to achieve rapid translation and accurately position it to the required processing starting point. In terms of lateral position adjustment, the second motor 226 is turned, driving the second lead screw 224 to rotate. The moving seat 24, which is threaded with the second lead screw 224, can only move laterally under the guidance and constraint of the two sets of second rail plates 223 on the lateral plate 222. Linear motion is used to flexibly and accurately adjust the lateral coordinates of the machining position. For the control of the machining height, the No. 3 motor 245 is started, which drives the No. 3 lead screw 243 to rotate. The lifting seat 242 will move up and down precisely along the No. 3 rail plate 241, thereby driving the machining body 25 installed at the front end to reach the appropriate machining height. When it is necessary to rotate the cylinder to achieve all-round machining, the No. 1 hydraulic rod 312 is first extended so that the contact heads 322 on the two sets of movable plates 32 are in close contact with the left and right ends of the cylinder respectively. At the same time, the No. 2 hydraulic rod 342 is retracted to loosen the clamping seat 3411 from the cylinder. Then, the two sets of drive motors 321 are started. The rotating shaft of the drive motor 321 drives the contact head 322 to rotate, thereby driving the cylinder to rotate, so that the machining tool can perform fine machining on each surface of the cylinder.

[0048] During the processing, the waste generated will fall into the feed cylinder 33 through the channel on the placement platform 3, and be discharged from the processing area along the feed cylinder 33, keeping the working environment clean and avoiding damage to the processing equipment and cylinder barrel caused by the waste.

[0049] The following points should be noted in this article:

[0050] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0051] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0052] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A fixed fixture for machining a hydraulic cylinder barrel, comprising: Protective box (1); characterized in that, The front end of the protective box (1) is fitted with two sets of protective plates (11) via hinges. Inside the protective box (1), a base (2) is fitted with bolts. A placement platform (3) is fixed on the base (2). Two sets of base plates (31) are fitted with bolts on the placement platform (3). Cylinder seats (311) are fitted with bolts on both sets of base plates (31). A hydraulic rod (312) is fitted with bolts on both sets of cylinder seats (311). Two sets of movable plates (32) slide on the placement platform (3). The piston rods of the two sets of hydraulic rods (312) are fixedly connected to the two sets of movable plates (32). A drive motor (321) is fitted with bolts on both sets of movable plates (32). A connecting rod is fixed on the shaft of each of the two sets of drive motors (321). The contact (322) is provided with two sets of through slots on the placement platform (3). Two sets of feeding cylinders (33) are fixed at the lower end of the placement platform (3). The upper ends of the two sets of feeding cylinders (33) are respectively connected to the lower ends of the two sets of through slots on the placement platform (3). The placement platform (3) is installed with a mounting seat (34) by bolts. The mounting seat (34) is located between the two sets of feeding cylinders (33). Two sets of side plates (341) are installed on the mounting seat (34) by bolts. The lower ends of the two sets of side plates (341) are installed with a second hydraulic rod (342) by bolts. Two sets of clamping seats (3411) are installed between the two sets of side plates (341) by pins. The lower ends of the two sets of clamping seats (3411) are connected to the upper end of the piston rod of the second hydraulic rod (342) by pins.

2. The fixed fixture for machining a hydraulic cylinder barrel according to claim 1, characterized in that, The lower end of the base (2) is equipped with a lead screw (23) via a bearing. The rear end of the base (2) is equipped with a motor mount (231) via bolts. A motor (232) is installed on the motor mount (231) via bolts. The output shaft of the motor (232) is connected to the rear end of the lead screw (23). The left and right ends of the base (2) are equipped with rail plates (21) via bolts. Support plates (22) slide on the rail plates (21) on both sides of the base (2). The lower ends of the two sets of support plates (22) are equipped with connecting plates (221) via bolts. The connecting plates (221) are threadedly engaged with the lead screw (23).

3. The fixed fixture for machining a hydraulic cylinder barrel according to claim 2, characterized in that, The upper ends of the two sets of support plates (22) are bolted with a transverse plate (222), and two sets of second rail plates (223) are bolted on the transverse plate (222). The two sets of second rail plates (223) have movable seats (24) on them. The second lead screw (224) is mounted on the transverse plate (222) through a bearing. The second lead screw (224) is threaded with the movable seat (24). The second motor seat (225) is bolted on the support plate (22) near the left side of the base (2).

4. The fixed fixture for machining a hydraulic cylinder barrel according to claim 3, characterized in that, The No. 2 motor (226) is mounted on the No. 2 motor base (225) by bolts, and the output shaft of the No. 2 motor (226) is connected to the left end of the No. 2 lead screw (224).

5. The fixing fixture for machining a hydraulic cylinder barrel according to claim 3, characterized in that, Two sets of No. 3 rail plates (241) are bolted on the movable seat (24), and a lifting seat (242) slides on the two sets of No. 3 rail plates (241). A No. 3 lead screw (243) is mounted on the movable seat (24) through a bearing, and the No. 3 lead screw (243) is threadedly engaged with the lifting seat (242).

6. The fixing fixture for machining a hydraulic cylinder barrel according to claim 5, characterized in that, The upper end of the movable seat (24) is bolted to a No. 3 motor seat (244), and the upper end of the No. 3 motor seat (244) is bolted to a No. 3 motor (245). The output shaft of the No. 3 motor (245) is connected to the upper end of the No. 3 lead screw (243).

7. The fixed fixture for machining a hydraulic cylinder barrel according to claim 5, characterized in that, The front end of the lifting seat (242) is bolted to the processor body (25).