A device for milling the outer shape of a cylinder rod head

Abstract

The utility model discloses an oil cylinder rod head mills external type device, including oil cylinder piston rod, piston disc and base, the piston disc is supported in the base top, the base top end is installed with half ring baffle, both sides of base are installed with mounting panel, the mounting panel is fixed on the workbench through bolt, the base top end is provided with the lift ring, the lift ring with the base top lift, the lift ring top end is installed with the limit top board, is set with the positioning hole on the limit top board, the oil cylinder piston rod penetrates the positioning hole top, two screw rods are threadedly connected on the limit top board, and two the screw rod extrusion is in the piston disc top end, through the radial location of positioning hole, the extrusion fixation of screw rod and the location effect of limit wedge bar, the stability of milling processing is guaranteed in multidimension, because the oil cylinder rod body is cylindrical, the traditional fixture contact stability is poor, and the problem that is easy to lead to slippage, deviation is solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder rod head machining fixtures, specifically a hydraulic cylinder rod head milling device. Background Technology

[0002] Hydraulic cylinders, as the core actuators of hydraulic systems, play a crucial role in power transmission and load actuation through their piston rods (i.e., cylinder rods). The cylinder rod head needs to be machined into specific shapes, such as steps, threads, pinhole mating surfaces, or irregular connection structures, depending on the assembly scenario, to achieve precise alignment with the cylinder end cap, external connectors, and load. Hydraulic cylinders are widely used in cylinder production processes in hydraulic machinery, construction machinery, and automobile manufacturing. Currently, the industry primarily uses cylinder rod head milling devices to complete the milling of the rod head. These devices are mostly automated or semi-automated, enabling batch processing of rod head shapes. However, in actual processing, because the cylinder rod body has a cylindrical structure, traditional clamps used to fix the cylinder rod are mostly positioned by clamping or pressing. The cylindrical rod surface makes the contact stability between the clamp and the rod poor. The cutting force generated during milling can easily cause the cylinder rod to slip or shift. This not only affects the dimensional accuracy and surface quality of the rod head milling, but may also cause tool wear, workpiece scrap, and even equipment safety hazards. It seriously restricts the efficiency and quality of cylinder rod head processing and makes it difficult to meet the actual needs of high-precision cylinder production.

[0003] Therefore, this utility model provides a device for milling the shape of a hydraulic cylinder rod head. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cylinder rod head milling device to solve the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder rod head milling device, comprising a hydraulic cylinder piston rod, a piston disc, and a base. The piston disc rests on the top of the base. A semi-circular baffle is installed at the top of the base. Mounting plates are installed on both sides of the base, and the mounting plates are fixed to a worktable by bolts. A lifting ring is provided at the top of the base, and the lifting ring moves up and down with the top of the base. A limiting top plate is installed at the top of the lifting ring, and a positioning hole is provided on the limiting top plate. The hydraulic cylinder piston rod passes through the top of the positioning hole. After the lifting ring descends, it contacts the top of the semi-circular baffle. Two screws are threadedly connected to the limiting top plate, and the two screws press against the top of the piston disc. An L-shaped support rod is provided on one side of the base, and a support sleeve is installed at the top of the L-shaped support rod. A limiting wedge rod for limiting the lifting ring is slidably connected to the inner wall of the support sleeve.

[0006] Preferably, the semi-annular baffle has two circular grooves, and two first return springs are installed on the inner walls of the two circular grooves. The two first return springs are installed at the bottom of the lifting ring.

[0007] Preferably, guide rods are installed on the inner walls of both circular grooves, both guide rods pass through the lifting ring and the top of the limiting top plate, and limiting end plates are installed on the top of both guide rods. The limiting end plates are in contact with the top of the limiting top plate, and the first reset spring is sleeved on the outer side of the corresponding guide rod.

[0008] Preferably, gears are installed at the top ends of both screws, and a toothed ring sleeve is provided on the limiting top plate, with both gears meshing with the inner wall of the toothed ring sleeve.

[0009] Preferably, a groove is provided at the top of the limiting wedge rod, a limiting block is installed on the inner wall of the support sleeve, the limiting block is slidably connected to the inner wall of the groove, and a second return spring is installed between the support sleeve and the limiting wedge rod.

[0010] Preferably, a traction rope is installed on one side of the limiting wedge rod, the second reset spring is sleeved on the outside of the traction rope, the traction rope passes through the outside of the support sleeve, and a traction end block is installed at one end of the traction rope.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model, through the radial limiting of the positioning hole, the extrusion fixing of the screw, and the limiting wedge, ensures stability during milling in multiple dimensions. It solves the problem of poor contact stability of traditional fixtures, which easily leads to slippage and displacement, due to the cylindrical shape of the cylinder rod body. It avoids slippage and displacement caused by cutting force, thereby ensuring the dimensional accuracy and surface quality of the rod head milling, reducing tool wear and workpiece scrap, eliminating potential safety hazards in equipment operation, improving the efficiency and quality of cylinder rod head machining, and meeting the actual needs of high-precision cylinder production. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in its unfolded state;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention in use. Figure 1 ;

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention in use. Figure 2 ;

[0017] Figure 4 This is a three-dimensional enlarged cross-sectional structural diagram of the support sleeve and other components in this utility model.

[0018] In the diagram: 1. Cylinder piston rod; 11. Piston disc; 2. Base; 21. Semi-ring baffle; 211. Circular groove; 22. Mounting plate; 23. First return spring; 24. Guide rod; 241. Limiting end plate; 3. Lifting ring; 31. Limiting top plate; 311. Positioning hole; 32. Screw; 33. Gear; 34. Gear ring sleeve; 4. L-shaped support rod; 41. Support sleeve; 411. Limiting block; 42. Limiting wedge rod; 421. Slide groove; 43. Second return spring; 44. Traction rope; 441. Traction end block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 A hydraulic cylinder rod head milling device includes a hydraulic cylinder piston rod 1, a piston disc 11, and a base 2. The piston disc 11 is supported on the top of the base 2. A semi-circular baffle 21 is installed on the top of the base 2. Mounting plates 22 are installed on both sides of the base 2 and are fixed to the worktable by bolts. A lifting ring 3 is provided on the top of the base 2. The lifting ring 3 moves up and down with the top of the base 2. A limiting top plate 31 is installed on the top of the lifting ring 3. A positioning hole 311 is opened on the limiting top plate 31. The hydraulic cylinder piston rod 1 passes through the top of the positioning hole 311. After the lifting ring 3 descends, it contacts the top of the semi-circular baffle 21. Two screws 32 are threadedly connected to the limiting top plate 31. The two screws 32 are pressed against the top of the piston disc 11. An L-shaped support rod 4 is provided on one side of the base 2. A support sleeve 41 is installed on the top of the L-shaped support rod 4. A limiting wedge rod 42 for limiting the lifting ring 3 is slidably connected to the inner wall of the support sleeve 41.

[0021] Specifically, the hydraulic cylinder piston rod 1 is integrated with the piston disc 11. First, the piston disc 11 is placed above the base 2, driving the hydraulic cylinder piston rod 1. At this time, the raised lifting ring 3 will not restrict it. Then, the limiting top plate 31 is pressed down, causing the lifting ring 3 and the limiting top plate 31 to descend. The hydraulic cylinder piston rod 1 is inserted into the positioning hole 311 until the lifting ring 3 contacts the semi-ring baffle 21 and stops descending. Then, the limiting wedge 42 extends and rests on the top of the lifting ring 3 to limit it. After that, the two screws 32 are rotated, and the two screws 32 squeeze and fix the piston disc 11. The positioning hole 311 radially limits the hydraulic cylinder piston rod 1. At the same time, the screws 32 squeeze the piston disc 11 and the limiting wedge 42... The 42 lifting rings 3 provide limiting positions, fixing the cylinder rod from multiple directions and locations. This design solves the problem of poor contact stability in traditional fixtures, which can easily lead to slippage and displacement of the cylinder rod due to its cylindrical shape. The radial limiting of the positioning hole 311, the pressing and fixing of the screw 32, and the limiting effect of the limiting wedge 42 ensure the stability of the cylinder rod during milling, avoiding slippage and displacement caused by cutting forces. This guarantees the dimensional accuracy and surface quality of the rod head milling, reduces tool wear and workpiece scrap, eliminates potential safety hazards in equipment operation, improves the efficiency and quality of cylinder rod head machining, and meets the actual needs of high-precision cylinder production.

[0022] In one embodiment of this utility model, such as Figures 1-4 As shown, two circular grooves 211 are provided on the semi-circular baffle 21, and two first return springs 23 are installed on the inner walls of the two circular grooves 211. The two first return springs 23 are installed at the bottom of the lifting ring 3.

[0023] Specifically, two circular grooves 211 are opened on the semi-circular baffle 21, and two first reset springs 23 are installed on the inner wall of each circular groove 211. The other end of these springs is connected to the bottom of the lifting ring 3 to form an elastic support structure. When the limiting wedge rod 42 is retracted, the elastic force of the first reset spring 23 will automatically lift the lifting ring 3 and the limiting top plate 31 upwards to reset, which facilitates the quick loading and unloading of the workpiece.

[0024] In one embodiment of this utility model, such as Figures 1-4 As shown, guide rods 24 are installed on the inner walls of the two circular grooves 211. The two guide rods 24 pass through the top of the lifting ring 3 and the limiting top plate 31. Limiting end plates 241 are installed on the top of the two guide rods 24. The limiting end plates 241 are in contact with the top of the limiting top plate 31. The first reset spring 23 is sleeved on the outside of the corresponding guide rod 24.

[0025] Specifically, when pressure is applied to the limiting top plate 31 to cause the lifting ring 3 to move downward along the guide rod 24, the first reset spring 23 is compressed to store elastic force for subsequent reset. The guide rod 24 can accurately guide the movement direction of the lifting ring 3 and the limiting top plate 31, preventing them from deviating or swaying during the lifting process. When the limiting wedge rod 42 is retracted, the elastic force of the first reset spring 23 is released, pushing the lifting ring 3 and the limiting top plate 31 to automatically move upward and reset along the guide rod 24. At the same time, the limiting end plate 241 can limit the maximum upward stroke of the limiting top plate 31.

[0026] In one embodiment of this utility model, such as Figures 1-4 As shown, gears 33 are installed at the top of both screws 32, and a toothed ring sleeve 34 is provided on the limiting top plate 31. Both gears 33 are meshed with the inner wall of the toothed ring sleeve 34.

[0027] Specifically, when the operator directly rotates the gear ring sleeve 34, the gear ring sleeve 34 synchronously drives the two gears 33 meshing with it through the teeth on the inner wall, causing the two gears 33 to rotate synchronously at the same speed and in the same direction. The gears 33 are fixedly connected to the screws 32, thereby driving the two screws 32 to rise and fall synchronously, realizing synchronous compression or release of the piston disc 11, which is convenient and quick to operate.

[0028] In one embodiment of this utility model, such as Figures 1-4 As shown, a groove 421 is provided at the top of the limiting wedge rod 42, and a limiting block 411 is installed on the inner wall of the support sleeve 41. The limiting block 411 is slidably connected to the inner wall of the groove 421, and a second reset spring 43 is installed between the support sleeve 41 and the limiting wedge rod 42.

[0029] Specifically, during the downward pressing of the lifting ring 3, the limiting wedge 42 is subjected to an oblique thrust from the bottom edge of the limiting top plate 31, which retracts horizontally backward along the support sleeve 41 and compresses the second return spring 43. When the lifting ring 3 descends to its position, the elastic force of the second return spring 43 pushes the limiting wedge 42 to extend automatically, so that the limiting end of the limiting wedge 42 rests on the top of the lifting ring 3 to lock it, preventing the lifting ring 3 and the limiting top plate 31 from accidentally moving upward during processing. When it is necessary to release the workpiece, the limiting wedge 42 is manually pulled to retract it, and the second return spring 43 is compressed again. At this time, the first return spring 23 pushes the lifting ring 3 and the limiting top plate 31 to move upward automatically to reset. After being released, the second return spring 43 causes the limiting wedge 42 to return to its initial position.

[0030] In one embodiment of this utility model, such as Figures 1-4 As shown, a traction rope 44 is installed on one side of the limiting wedge rod 42, and a second reset spring 43 is sleeved on the outside of the traction rope 44. The traction rope 44 passes through the outside of the support sleeve 41, and a traction end block 441 is installed at one end of the traction rope 44.

[0031] Specifically, when the workpiece needs to be released, the traction end block 441 is pulled to drive the limit wedge rod 42 to retract via the traction rope 44, and the second reset spring 43 is compressed again. At this time, the first reset spring 23 pushes the lifting ring 3 and the limit top plate 31 to move upward and reset. After the traction end block 441 is released, the second reset spring 43 drives the limit wedge rod 42 back to the initial position.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] Working principle: When the hydraulic cylinder rod head milling device is working, the integrated hydraulic cylinder piston rod 1 and piston disc 11 are first placed on the base 2. At this time, the raised lifting ring 3 does not cause any restriction. Pressing down the limiting top plate 31 causes the lifting ring 3 and the limiting top plate 31 to descend along the guide rod 24. The hydraulic cylinder piston rod 1 is inserted into the positioning hole 311 until the lifting ring 3 contacts the semi-ring baffle 21. During this process, the first return spring 23 is compressed, and the limiting wedge rod 42 is compressed by the thrust of the limiting top plate 31 and compresses the second return spring 43. After the lifting ring 3 is in place, the second return spring 43 pushes the limiting wedge rod 42 to extend, and the sliding groove 421 and the limiting block are engaged. Guided by 411, the lifting ring 3 is locked. Then, the toothed ring sleeve 34 is rotated, and through its meshing with the two gears 33, the two screws 32 are driven to rise and fall synchronously and squeeze the piston disc 11. With the radial limit of the positioning hole 311, the cylinder rod is fixed in multiple dimensions. After processing, the traction end block 441 is pulled, and the limit wedge rod 42 is driven to retract via the traction rope 44. The first return spring 23 releases its elastic force, pushing the lifting ring 3 and the limit top plate 31 to reset along the guide rod 24. The traction end block 441 is released, and the second return spring 43 returns the limit wedge rod 42 to its original position, completing the loading and unloading of the workpiece. The entire process ensures the stability of the cylinder rod processing and avoids slippage and deviation.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder rod head milling device, comprising a hydraulic cylinder piston rod (1), a piston disc (11), and a base (2), characterized in that, The piston disc (11) is supported on the top of the base (2). A semi-circular baffle (21) is installed on the top of the base (2). Mounting plates (22) are installed on both sides of the base (2). The mounting plates (22) are fixed to the workbench by bolts. A lifting ring (3) is provided on the top of the base (2). The lifting ring (3) moves up and down with the top of the base (2). A limiting top plate (31) is installed on the top of the lifting ring (3). A positioning hole (311) is opened on the limiting top plate (31). The oil cylinder piston The rod (1) passes through the top of the positioning hole (311). After the lifting ring (3) descends, it contacts the top of the semi-ring baffle (21). Two screws (32) are threaded on the limiting top plate (31). The two screws (32) are pressed against the top of the piston disc (11). An L-shaped support rod (4) is provided on one side of the base (2). A support sleeve (41) is installed at the top of the L-shaped support rod (4). A limiting wedge rod (42) for limiting the lifting ring (3) is slidably connected to the inner wall of the support sleeve (41).

2. The hydraulic cylinder rod head milling device according to claim 1, characterized in that, Two circular grooves (211) are provided on the semi-circular baffle (21), and two first reset springs (23) are installed on the inner walls of the two circular grooves (211). The two first reset springs (23) are installed at the bottom of the lifting ring (3).

3. The hydraulic cylinder rod head milling device according to claim 2, characterized in that, Guide rods (24) are installed on the inner walls of the two circular grooves (211). The two guide rods (24) pass through the top of the lifting ring (3) and the top of the limiting top plate (31). Limiting end plates (241) are installed on the top of the two guide rods (24). The limiting end plates (241) are in contact with the top of the limiting top plate (31). The first reset spring (23) is sleeved on the outside of the corresponding guide rod (24).

4. The hydraulic cylinder rod head milling device according to claim 3, characterized in that, Gears (33) are installed at the top of both screws (32), and a toothed ring sleeve (34) is provided on the limiting top plate (31). Both gears (33) are meshed with the inner wall of the toothed ring sleeve (34).

5. The hydraulic cylinder rod head milling device according to claim 1, characterized in that, The top end of the limiting wedge rod (42) is provided with a sliding groove (421), and a limiting block (411) is installed on the inner wall of the support sleeve (41). The limiting block (411) is slidably connected to the inner wall of the sliding groove (421). A second return spring (43) is installed between the support sleeve (41) and the limiting wedge rod (42).

6. The hydraulic cylinder rod head milling device according to claim 5, characterized in that, A traction rope (44) is installed on one side of the limiting wedge (42), and the second reset spring (43) is sleeved on the outside of the traction rope (44). The traction rope (44) passes through the outside of the support sleeve (41), and a traction end block (441) is installed at one end of the traction rope (44).

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