Piston rod machining device for hydraulic oil cylinder production

Abstract

The invention discloses a piston rod machining device for hydraulic oil cylinder production, which is a device for grinding the outer surface of a cylindrical piston rod and comprises a machine tool, a fixing plate, a fixing piece, a sliding plate, a rotary table, a conveying belt, a first sliding block, a second sliding block, an incomplete meshing wheel, a notch, a meshing plate, a threaded rod, a clamping plate and a clamping piece. The conveying belt, the first sliding block and the second sliding block are fixed in an abutting mode through the fixing piece, the piston rod is inserted into the second sliding block, the sliding plate moves downwards along the fixing plate, the first sliding block pulls the conveying belt on the first sliding block, the second sliding block moves relative to the sliding plate, and the piston rod on the second sliding block is driven to move downwards. The position, corresponding to the notch, of the incomplete meshing wheel slides relative to the sliding plate, the clamping plate moves to clamp and fix the piston rod on the second sliding block through the meshing plate, synchronous downward moving and fixed clamping of the piston rod are achieved through cooperation of the conveying belt, and the mode is simple in structure and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of the structure of a piston rod grinding machine tool, and particularly to a processing device for a piston rod used in the production of a hydraulic cylinder. Background Art

[0002] The piston rod of a hydraulic cylinder is an important part of the cylinder, which plays a crucial role in the working performance and service life of the cylinder. The processing technological process of the piston rod mainly includes steps such as blanking, rough turning, heat treatment, finish turning, grinding, polishing, etc. The piston rod is ground by a machine tool to further improve the dimensional accuracy and surface quality of the piston rod.

[0003] An existing surface processing device for a piston rod of a bending oil cylinder with the publication number of CN118848691A, which relates to the technical field of piston rod processing, includes: a support base, a support substrate, a mounting plate, and a pressing slide; stroke grooves are opened on the front and rear sides of the support base; a pushing member is slidably installed inside the stroke grooves. When the non-clamping part of the piston rod is polished, the polishing of the clamping part of the piston rod is completed synchronously, and when the surface of the piston rod is pre-polished, the piston rod can be clamped and positioned in the up-down and left-right directions in advance, so that the comprehensiveness, stability, and convenience of the polishing of the present invention are ensured, and the problem that the clamped part of the piston rod cannot be well polished, resulting in unpolished parts remaining on the polished piston rod and requiring subsequent rework, is solved.

[0004] When an existing processing machine tool for a piston rod (such as the bottom of a piston rod like a transmission shaft, a valve rod, etc. is not a completely cylindrical structure) is in use, through the stroke groove and the pushing member, first, the clamped workpiece is moved away, then the clamped workpiece is opened, and the piston rod is clamped and fixed by the clamped workpiece, and finally, the clamped workpiece fixing the piston rod is moved to perform a grinding motion. This method is troublesome to operate, and the existing one cannot automatically clamp and move down for grinding.

[0005] Therefore, we propose a processing device for a piston rod used in the production of a hydraulic cylinder. Summary of the Invention

[0006] The purpose of the present invention is to provide a processing device for a piston rod used in the production of a hydraulic cylinder to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides a processing device for a piston rod used in the production of a hydraulic cylinder, including a machine tool, and a fixing plate is fixedly connected inside the machine tool;

[0008] It further includes: a fixing member and a sliding plate slidably engaged with the fixing plate. Rotating discs are rotatably connected to both ends of the sliding plate, and a conveyor belt is drivingly connected between the two rotating discs. A first sliding block and a second sliding block are slidably engaged with the conveyor belt through the fixing member. An incomplete meshing wheel rotatably connected to the inside of the second sliding block and slidably engaged with the sliding plate is provided. A notch is formed on the incomplete meshing wheel, and a meshing plate engaged with the incomplete meshing wheel is fixedly embedded on the sliding plate;

[0009] A threaded rod threadedly connected to the central axis of the incomplete meshing wheel, with a clamping plate connected to the end of the threaded rod. The clamping plate is used for clamping the piston rod passing through the second sliding block, and a clamping member for driving the clamping plate to clamp the piston rod is provided on the incomplete meshing wheel;

[0010] A power member and a movable block sliding on the bottom of the machine tool. A grinding block is rotatably connected inside the movable block through the power member. A grinding hole runs through the middle of the grinding block, and the inner wall of the grinding hole is in grinding fit with the outer surface of the piston rod.

[0011] Preferably, the fixing member includes a plug rod and a first telescopic cylinder. The first telescopic cylinder is fixedly connected to the first sliding block and the second sliding block. The telescopic end of the first telescopic cylinder is fixedly connected to the plug rod. The end portions of the two plug rods are respectively inserted into the first sliding block and the second sliding block and fixedly connected with arc-shaped pressing plates. The arc-shaped pressing plates are in pressing fit with the conveyor belt, and the first sliding block is fixedly connected to the fixing plate.

[0012] Preferably, the sliding plate is slidably engaged with the fixing plate, and a second telescopic cylinder is fixedly connected to the fixing plate. The telescopic end of the second telescopic cylinder is fixedly connected to the end of the sliding plate.

[0013] Preferably, an avoidance groove is formed on the second sliding block, and the incomplete meshing wheel is located in the avoidance groove. The second sliding block is simultaneously slidably engaged with the sliding plate and the fixing plate.

[0014] Preferably, the clamping member includes a threaded sleeve fixedly connected to the middle of the incomplete meshing wheel. The threaded sleeve is threadedly connected to the threaded rod, and a limiting member for moving the threaded rod is provided inside the second sliding block.

[0015] Preferably, the limiting member includes a rectangular rod fixedly connected to the inside of the second sliding block. The rectangular rod is movably inserted into the threaded rod.

[0016] Preferably, two mating plates are rotatably connected inside the second sliding block through a torsion spring rod, and the mating plates and the clamping plate act on the piston rod simultaneously.

[0017] Preferably, the power member includes a motor fixedly connected to the movable block. The output shaft of the motor is fixedly connected to a gear that meshes with the grinding block. The side of the grinding block is fixedly connected to a limiting ring plate that rotates within the movable block. An adjusting member for adjusting the contact distance between the grinding hole and the piston rod is provided on the machine tool.

[0018] Preferably, the adjusting member includes a third telescopic cylinder fixedly connected to the bottom of the machine tool. The telescopic end of the third telescopic cylinder is fixedly connected to the movable block. A limiting rod is fixedly connected to the movable block and movably inserted into the bottom of the machine tool.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] By pressing and fixing the conveyor belt with the adjustable and movable first sliding block and second sliding block, inserting the piston rod into the second sliding block, moving the sliding plate downward along the fixed plate, driving the two turntables to move downward synchronously, and since the position of the first sliding block is fixed, pulling the conveyor belt on the first sliding block, causing the turntables to rotate self - sufficiently, thereby driving the conveyor belt to move, making the second sliding block move relative to the sliding plate, and thus driving the piston rod on the second sliding block to move downward;

[0021] Among them, during the process of the second sliding block moving along the sliding plate, the position of the corresponding notch of the incompletely meshing wheel slides with the sliding plate, and the incompletely meshing wheel does not rotate. When the incompletely meshing wheel rotates under the action of the meshing plate, it drives the threaded sleeve to rotate self - sufficiently, making the clamping plate move and cooperate with the cooperating plate to clamp and fix the piston rod on the second sliding block. Through the cooperation of the conveyor belt, the present application realizes the synchronous downward movement and fixed clamping of the piston rod. This method has a simple structure and is easy to operate;

[0022] The present application further starts the second telescopic cylinder to make the piston rod move downward further, switching the position of the piston rod and the grinding hole, thereby comprehensively grinding the piston rod.

[0023] Among them, the first sliding block and the second sliding block can be adjusted to press and fix the conveyor belt, and cooperate with the fixing member, thereby flexibly changing the downward movement distance of the piston rod and increasing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the internal structure of the machine tool of the present invention;

[0026] Figure 3 is a schematic diagram of the cooperation structure between the fixed plate and the movable block of the present invention;

[0027] Figure 4Schematic side view of the mating structure between the fixed plate and the movable block of the present invention;

[0028] Figure 5 Schematic left view of the mating structure between the fixed plate and the movable block of the present invention;

[0029] Figure 6 Schematic exploded view of the power component of the present invention;

[0030] Figure 7 Schematic exploded view of the piston rod and the grinding block of the present invention;

[0031] Figure 8 Schematic exploded view of the fixed plate and the sliding plate of the present invention;

[0032] Figure 9 Schematic sectional view of the fixed plate of the present invention;

[0033] Figure 10 Schematic view of the mating structure of the fixed plate with the first sliding block and the sliding plate of the present invention;

[0034] Figure 11 Schematic exploded view of the fixed plate with the first sliding block and the sliding plate of the present invention;

[0035] Figure 12 Schematic exploded view of the first sliding block and the conveyor belt of the present invention;

[0036] Figure 13 Schematic sectional view of the second sliding block of the present invention;

[0037] Figure 14 Schematic exploded view of the turntable and the sliding plate of the present invention;

[0038] Figure 15 Schematic exploded view of the incomplete meshing wheel and the second sliding block of the present invention;

[0039] Figure 16 Schematic view of the mating structure of the incomplete meshing wheel with the sliding plate and the meshing plate of the present invention;

[0040] Figure 17 For the present invention Figure 4 Schematic sectional view of the movable block;

[0041] Figure 18 Schematic view of the mating structure of the piston rod with the sectional movable block, grinding block and limiting ring plate of the present invention;

[0042] Figure 19 Schematic exploded view of the movable block with the piston rod, grinding block and limiting ring plate of the present invention.

[0043] In the figure: 1, machine tool; 2, fixed plate; 3, slide plate; 4, turntable; 5, conveyor belt; 6, first sliding block; 7, second sliding block; 8, incomplete meshing wheel; 9, notch; 10, meshing plate; 11, threaded rod; 12, clamping plate; 13, movable block; 14, grinding block; 15, grinding hole; 16, inserting rod; 17, first telescopic cylinder; 18, arc-shaped pressing plate; 19, second telescopic cylinder; 20, avoidance groove; 21, threaded sleeve; 22, rectangular rod; 23, mating plate; 24, motor; 25, gear; 26, limiting ring plate; 27, third telescopic cylinder; 28, limiting rod. Specific embodiments

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figures 1 - 19 , the present invention provides a processing device for piston rods used in the production of hydraulic cylinders, including a machine tool 1, and a fixed plate 2 is fixedly connected inside the machine tool 1;

[0046] Compared with the traditional method of grinding the entire arc surface of a cylindrical piston rod by 360°, for piston rods with structures such as transmission shafts and valve rods, only the side in contact with another component needs to have high precision / surface finish, and the other side can remain in its original state because there is no mating requirement;

[0047] It should be noted that: this application can also be used for local quenching or carburizing treatment, and only the surface of the local hardened layer is ground to avoid damaging the internal metallographic structure.

[0048] It further includes: a fixing member and a slide plate 3 slidably engaged with the fixed plate 2. Turntables 4 are rotatably connected to both ends of the slide plate 3, and a conveyor belt 5 (the conveyor belt 5 can be a non-elastic rope structure, such as a steel wire rope, a chain, etc.) is drivingly connected between the two turntables 4. A first sliding block 6 and a second sliding block 7 are slidably engaged on the conveyor belt 5 through the fixing member. An incomplete meshing wheel 8 rotatably connected to the inside of the second sliding block 7 is slidably engaged with the slide plate 3. A notch 9 is formed on the incomplete meshing wheel 8, and a meshing plate 10 engaged with the incomplete meshing wheel 8 is fixedly embedded on the slide plate 3;

[0049] A threaded rod 11 threadedly connected to the central axis of the incomplete meshing wheel 8, and a clamping plate 12 is connected to the end of the threaded rod 11. The clamping plate 12 is used to clamp the piston rod passing through the second sliding block 7, and a clamping member for driving the clamping plate 12 to clamp the piston rod is provided on the incomplete meshing wheel 8;

[0050] A power component and a movable block 13 that slides on the bottom of the machine tool 1. Inside the movable block 13, a grinding block 14 is rotatably connected by the power component. A grinding hole 15 runs through the middle of the grinding block 14, and the inner wall of the grinding hole 15 is in grinding fit with the outer surface of the piston rod;

[0051] The processing method of this application is as follows:

[0052] Step 1: Through the fixing component on the first sliding block 6, make the first sliding block 6 press and fix against the conveyor belt 5. The first sliding block 6 is fixedly connected to the fixing plate 2, and through the fixing component on the second sliding block 7, make the second sliding block 7 press and fix against the conveyor belt 5. The second sliding block 7 can slide along the fixing plate 2;

[0053] Step 2: Insert the piston rod into the second sliding block 7 and initially press it through two mating plates 23 so that the piston rod presses in the second sliding block 7 and the piston rod will not break away from the second sliding block 7;

[0054] Step 3: Start the second telescopic cylinder 19 to make the sliding plate 3 move downward along the fixing plate 2, driving the two turntables 4 to move downward synchronously. And because the position of the first sliding block 6 is fixed, the conveyor belt 5 on the first sliding block 6 is pulled, causing the turntables 4 to rotate on their own, thereby driving the conveyor belt 5 to drive, making the second sliding block 7 move relative to the sliding plate 3, and thus driving the piston rod on the second sliding block 7 to move downward;

[0055] When the second sliding block 7 moves along the sliding plate 3, the position of the corresponding notch 9 of the incomplete meshing wheel 8 slides with the sliding plate 3, and the incomplete meshing wheel 8 does not rotate. When the incomplete meshing wheel 8 contacts the meshing plate 10, under the action of the meshing plate 10, the incomplete meshing wheel 8 rotates, thereby driving the threaded sleeve 21 to rotate synchronously on its own, and under the action of the limiting component, the threaded rod 11 moves horizontally (the threaded rod 11 does not rotate on its own), and the clamping plate 12 moves synchronously and cooperates with the mating plate 23 to clamp and fix the piston rod on the second sliding block 7;

[0056] The second telescopic cylinder 19 continues to move, making the position of the corresponding another notch 9 of the incomplete meshing wheel 8 slide with the sliding plate 3, and the incomplete meshing wheel 8 does not rotate, so as to ensure the clamping of the piston rod by the clamping plate 12. After the fixed piston rod moves into the grinding hole 15, stop the telescopic movement of the second telescopic cylinder 19;

[0057] Step 4: Adjust the contact distance between the grinding hole 15 and the piston rod through the adjusting component, and make the grinding block 14 rotate on its own through the power component to grind the fixed piston rod;

[0058] Step 5: Further start the second telescopic cylinder 19 to make the piston rod move downward further, switching the position of the piston rod and the grinding hole 15, so as to perform a comprehensive grinding of the piston rod.

[0059] The fixing member includes a plug rod 16 and a first telescopic cylinder 17. The first telescopic cylinder 17 is fixedly connected to the first sliding block 6 and the second sliding block 7. The telescopic end of the first telescopic cylinder 17 is fixedly connected to the plug rod 16. The end portions of the two plug rods 16 are respectively inserted into the first sliding block 6 and the second sliding block 7 and fixedly connected with arc-shaped pressing plates 18. The arc-shaped pressing plates 18 are in pressing fit with the conveyor belt 5. The first sliding block 6 is fixedly connected to the fixed plate 2.

[0060] By starting the first telescopic cylinder 17, the plug rod 16 is moved, driving the arc-shaped pressing plate 18 to move, thereby adjusting the positions of the first sliding block 6 and the second sliding block 7 relative to the conveyor belt 5. The fixing of the first sliding block 6 and the second sliding block 7 to the conveyor belt 5 involves the conveyor belt 5 on the first sliding block 6. Under the sliding of the sliding plate 3, while the turntable 4 moves downward, the turntable 4 rotates, and the conveyor belt 5 causes the second sliding block 7 to move relative to the sliding plate 3, so that the clamped piston rod on the second sliding block 7 moves downward into the grinding hole 15, facilitating the operation of the subsequent power member to grind the fixed piston rod.

[0061] The sliding plate 3 is in sliding fit with the fixed plate 2. A second telescopic cylinder 19 is fixedly connected to the fixed plate 2. The telescopic end of the second telescopic cylinder 19 is fixedly connected to the end of the sliding plate 3. By the telescoping of the second telescopic cylinder 19, the sliding plate 3 slides along the fixed plate 2. Since the position of the first sliding block 6 is fixed and the first sliding block 6 is fixedly connected to the conveyor belt 5 through the fixing member, the sliding plate 3 and the second sliding block 7 move downward, driving the piston rod to move towards the grinding hole 15, and the incomplete meshing wheel 8 moves into contact with the meshing plate 10. Under the action of the meshing plate 10, the incomplete meshing wheel 8 rotates self - sufficiently, thus completing the clamping and fixing of the piston rod by the clamping plate 12.

[0062] An avoidance groove 20 is formed on the second sliding block 7. The incomplete meshing wheel 8 is located in the avoidance groove 20. The second sliding block 7 is in sliding fit with both the sliding plate 3 and the fixed plate 2. The sliding fit of the sliding plate 3 and the fixed plate 2 with the second sliding block 7 ensures the smoothness of the mutual sliding.

[0063] The clamping member includes a threaded sleeve 21 fixedly connected to the middle of the incomplete meshing wheel 8. The threaded sleeve 21 is threadedly connected to the threaded rod 11. A limiting member for moving the threaded rod 11 is provided inside the second sliding block 7. The limiting member includes a rectangular rod 22 fixedly connected to the inside of the second sliding block 7, and the rectangular rod 22 is movably inserted into the threaded rod 11.

[0064] When the second sliding block 7 moves relative to the sliding plate 3, under the action of the engagement plate 10, the incomplete engagement wheel 8 rotates self - in the avoidance groove 20, so that the threaded sleeve 21 rotates self - in. Under the action of the rectangular rod 22, the threaded rod 11 slides along the rectangular rod 22, so that the threaded rod 11 moves along the threaded sleeve 21, and the threaded rod 11 does not rotate self - in. The threaded rod 11 moving in the second sliding block 7 drives the clamping plate to move synchronously, pressing against the piston rod. Combined with the cooperation of the cooperation plate 23, the piston rod is firmly clamped, facilitating the grinding block 14 that rotates self - in to grind the outer surface of the piston rod.

[0065] Two cooperation plates 23 are rotatably connected in the second sliding block 7 through torsion spring rods. The cooperation plates 23 and the clamping plates 12 act on the piston rod simultaneously. Through the torsion spring rods, the piston rod inserted into the second sliding block 7 is preliminarily fixed, preventing the piston rod from slipping out of the second sliding block 7, and facilitating the subsequent cooperation of the clamping plates 12 and the cooperation plates 23 to clamp the piston rod.

[0066] The power component includes a motor 24 fixedly connected to the movable block 13. The output shaft of the motor 24 is fixedly connected with a gear 25 that meshes with the grinding block 14. A limiting ring plate 26 that rotates in the movable block 13 is fixedly connected to the side of the grinding block 14. An adjusting component for adjusting the contact distance between the grinding hole 15 and the piston rod is provided on the machine tool 1;

[0067] Through the adjusting component, the inner wall of the grinding hole 15 is brought into contact with the outer surface of the piston rod. The motor 24 is started, driving the gear 25 to rotate self - in its original position in the movable block 13, thereby driving the grinding block 14 to rotate self - in, causing the grinding hole 15 to rotate self - in, and polishing the outer surface of the piston rod;

[0068] Among them, the limiting ring plate 26 ensures the stable self - rotation of the grinding block 14 and prevents the teeth on the outer surface of the grinding block 14 from frictionally contacting the inner wall of the movable block 13, so that the grinding block 14 only meshes and cooperates with the gear 25;

[0069] Among them, a partition is provided on the movable block 13 to prevent the grinding dust of the piston rod from entering the motor 24.

[0070] The adjusting component includes a third telescopic cylinder 27 fixedly connected to the bottom of the machine tool 1. The telescopic end of the third telescopic cylinder 27 is fixedly connected to the movable block 13. A limiting rod 28 that movably inserts into the bottom of the machine tool 1 is fixedly connected to the movable block 13;

[0071] Through the telescopic movement of the third telescopic cylinder 27, the movable block 13 is driven to move horizontally, thereby driving the positions of the motor 24, the gear 25, the grinding block 14, and the limiting ring plate 26 to move, so that the grinding block 14 adjusts its position, so that the position of the grinding hole 15 changes, adjusting the distance between the inner wall of the grinding hole 15 and the piston rod clamped and fixed, thereby adjusting the grinding degree of the piston rod, and the limiting rod 28 enables the movable block 13 to move smoothly;

[0072] That is, the diameter of the grinding hole 15 is larger than the diameter of the piston rod, facilitating the easy insertion of the piston rod into the grinding hole 15. The inner wall of the grinding block 14 does not contact the outer surface of the piston rod. When the piston rod needs to be polished, the third telescopic cylinder 27 drives the movable block 13 to move horizontally, making the inner wall of the grinding hole 15 contact the outer surface of the piston rod, and gradually adjusting the contact depth between the inner wall of the grinding hole 15 and the outer surface of the piston rod according to the grinding degree to ensure the grinding depth.

[0073] It should be noted that in this application, there are multiple power components, and the sizes of the grinding holes 15 on each power component are different to facilitate the adaptation to piston rods of different sizes.

[0074] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0075] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piston rod processing device for hydraulic cylinder production, comprising: A machine tool (1), wherein a fixing plate (2) is fixedly connected inside the machine tool (1); The invention is characterized in that it also comprises: a slide plate (3) slidably matched with the fixed plate (2), the two ends of the slide plate (3) are rotatably connected with a turntable (4), a conveyor belt (5) is transmission-connected between the two turntables (4), a first sliding block (6) and a second sliding block (7) are slidably matched with the conveyor belt (5) through a fixing member, an incomplete meshing wheel (8) slidably matched with the slide plate (3) is rotatably connected inside the second sliding block (7), a notch (9) is provided on the incomplete meshing wheel (8), and a meshing plate (10) meshing with the incomplete meshing wheel (8) is fixedly embedded on the slide plate (3); A threaded rod (11) threadedly connected to the central axis of the incomplete meshing wheel (8), the end of the threaded rod (11) being connected to a clamping plate (12), the clamping plate (12) being used to clamp a piston rod passing through the second sliding block (7), and the incomplete meshing wheel (8) being provided with a clamping member driving the clamping plate (12) to clamp the piston rod; A movable block (13) slides at the bottom of the machine tool (1), wherein a grinding block (14) is rotatably connected to the movable block (13) via a power member, and a grinding hole (15) is provided through the middle of the grinding block (14), wherein the inner wall of the grinding hole (15) is ground to fit with the cylindrical outer surface of the piston rod.

2. A piston rod processing device for hydraulic cylinder production according to claim 1, characterized in that: The fixing member comprises an insert rod (16) and a first telescopic cylinder (17). The two first telescopic cylinders (17) are respectively connected and fixed to the first sliding block (6) and the second sliding block (7). The telescopic end of the first telescopic cylinder (17) is connected and fixed to the insert rod (16). The ends of the two insert rods (16) are respectively inserted into the first sliding block (6) and the second sliding block (7) and are fixedly connected with an arc-shaped pressing plate (18). The arc-shaped pressing plate (18) is pressed and matched with the conveyor belt (5). The first sliding block (6) is connected and fixed to the fixing plate (2).

3. The piston rod processing device for hydraulic cylinder production according to claim 1 is characterized in that: The slide plate (3) is slidably matched with the fixed plate (2); a second telescopic cylinder (19) is fixedly connected to the fixed plate (2); and the telescopic end of the second telescopic cylinder (19) is fixedly connected to the end of the slide plate (3).

4. The piston rod processing device for hydraulic cylinder production according to claim 1 is characterized in that: The second sliding block (7) is provided with an avoidance groove (20), the incomplete meshing wheel (8) is located in the avoidance groove (20), and the second sliding block (7) is slidably matched with the sliding plate (3) and the fixing plate (2) at the same time.

5. The piston rod processing device for hydraulic cylinder production according to claim 1 is characterized in that: The clamping member comprises a threaded sleeve (21) connected and fixed to the middle of the incomplete meshing wheel (8), the threaded sleeve (21) is threadedly connected to the threaded rod (11), and a limiting member for moving the threaded rod (11) is provided inside the second sliding block (7).

6. The piston rod processing device for hydraulic cylinder production according to claim 5, characterized in that: The limiting member comprises a rectangular rod (22) which is connected and fixed to the inside of the second sliding block (7); the rectangular rod (22) is movably plugged into the threaded rod (11).

7. The piston rod processing device for hydraulic cylinder production according to claim 1 is characterized in that: Two matching plates (23) are rotatably connected in the second sliding block (7) via a torsion spring rod, and the matching plates (23) and the clamping plate (12) act on the piston rod simultaneously.

8. The piston rod processing device for hydraulic cylinder production according to claim 1 is characterized in that: The power component comprises a motor (24) connected and fixed to the movable block (13); the output shaft of the motor (24) is fixedly connected to a gear (25) meshing with the grinding block (14); the side of the grinding block (14) is fixedly connected to a limit ring plate (26) rotating in the movable block (13); and the machine tool (1) is provided with an adjusting component for adjusting the contact distance between the grinding hole (15) and the piston rod.

9. The piston rod processing device for hydraulic cylinder production according to claim 1, characterized in that: The adjusting member comprises a third telescopic cylinder (27) connected and fixed to the bottom of the machine tool (1); the telescopic end of the third telescopic cylinder (27) is connected and fixed to the movable block (13); and a limiting rod (28) is fixedly connected to the movable block (13) and is movably inserted into the bottom of the machine tool (1).

Images