Hydraulic cylinder piston rod surface polishing device

Abstract

The utility model relates to hydraulic pressure oil cylinder piston rod surface polishing device, include: magnetic force needle polishing mechanism, the magnetic force needle polishing mechanism includes the tubular housing, the outside of tubular housing is equipped with the installation shell, the inside of installation shell is provided with a plurality of electromagnet, electromagnet controls through the controller, the inside of tubular housing places the magnetic force needle, the utility model discloses through setting up magnetic force needle mechanism etc. parts, through the controller control electromagnet, make electromagnet power -on generation magnetic field, and through the direction of current in adjacent two electromagnets is changed, make the magnetic pole of electromagnet change, when current continues periodic switching, the magnetic force needle is under the action of electromagnetic field and produces axial vibration while circular motion, piston rod and magnetic force needle collide with each other when located in the tubular housing inside, thereby realized the effect that polishes and polishes.

Description

Technical Field

[0001] This utility model relates to the field of polishing technology, specifically to a device for polishing the surface of a hydraulic cylinder piston rod. Background Technology

[0002] Polishing is a processing method that uses mechanical, chemical, or electrochemical actions to reduce the surface roughness of a workpiece in order to obtain a bright and smooth surface. It involves using polishing tools and abrasive particles or other polishing media to modify the surface of a workpiece.

[0003] Hydraulic cylinder piston rods also require surface polishing during processing. Common piston rod polishing machines use a polishing wheel that contacts the outer surface of the piston rod. The polishing wheel is driven by a motor to polish the outer surface of the piston rod. While this polishing method is simple in structure, it still has drawbacks. For example, when polishing stepped piston rods, piston rods with keyways or splines, or irregularly shaped piston rods such as polygonal moving rods, the polishing wheel cannot perfectly fit the outer surface of the piston rod, resulting in blind spots and insufficient polishing. Therefore, a hydraulic cylinder piston rod surface polishing device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] Based on the above description, this utility model provides a hydraulic cylinder piston rod surface polishing device to solve the problem that polishing wheels cannot be used for irregularly shaped piston rods when polishing piston rods.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a hydraulic cylinder piston rod surface polishing device, including: a magnetic needle polishing mechanism;

[0006] The magnetic needle polishing mechanism includes a cylindrical outer shell, an outer mounting shell is fitted over the cylindrical outer shell, a plurality of electromagnets are disposed inside the mounting shell, the electromagnets are controlled by a controller, and magnetic needles are placed inside the cylindrical outer shell.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, a processing table is provided at the bottom of the mounting housing, and two guide rollers are provided on the upper surface of the processing table, with the two guide rollers respectively located at both ends of the cylindrical housing.

[0009] Furthermore, the guide roller includes a mounting frame disposed on the upper surface of the processing table, and a rotating roller is disposed between the two side walls inside the mounting frame.

[0010] Furthermore, the cylindrical outer shell includes a hollow cylinder located above the processing table. Both ends of the hollow cylinder are provided with limiting cylinders. The inner diameter of the opposite side of the two limiting cylinders is the same as the inner diameter of both ends of the hollow cylinder, and the inner diameter of the opposite side of the two limiting cylinders is smaller than the inner diameter of both ends of the hollow cylinder.

[0011] Furthermore, a connecting plate is fitted around the outside of the hollow cylinder, and the surface of the connecting plate is provided with mounting holes.

[0012] Furthermore, the mounting housing includes two annular semi-shells fitted outside the hollow cylinder. The two annular semi-shells are connected to the connecting plate by screws and nuts. Connecting ears are provided on the circumferential surface of the annular semi-shells, and the connecting ears correspond one-to-one with the mounting holes.

[0013] Furthermore, the annular semi-shell is provided with a boss and a support frame at its upper and lower ends, respectively, and a controller is provided at the top of the boss.

[0014] Furthermore, each of the two annular semi-shells is provided with multiple mounting slots and a wiring slot on opposite sides. One of the wiring slots is simultaneously connected to multiple mounting slots. The number of mounting slots is even and they are distributed in an annular, equidistant pattern along the inner circle of the wiring slot.

[0015] Furthermore, there are an even number of electromagnets, which are disposed inside the mounting groove, and the initial magnetic poles of two adjacent electromagnets are opposite.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] 1. This utility model sets up components such as a magnetic needle mechanism, and controls the electromagnet through a controller so that the electromagnet is energized to generate a magnetic field. By changing the direction of the current in two adjacent electromagnets, the magnetic poles of the electromagnet change. When the current is continuously and periodically switched, the magnetic needle moves in a circular motion under the action of the electromagnetic field and generates axial vibration. At this time, the piston rod located inside the cylindrical shell collides with the magnetic needle, thereby achieving the grinding and polishing effect.

[0018] 2. By setting up the magnetic needle, an adaptive effect is achieved. Polishing is performed by the collision and friction between the magnetic needle and the piston rod during the movement of the magnetic needle. On the one hand, the polishing is more thorough and can effectively avoid the dead corners that cannot be polished during the polishing process of irregularly shaped piston rods. On the other hand, the magnetic field distribution is more uniform, so the collision between the magnetic needle and the piston rod surface is also more uniform, thus obtaining a more uniform polishing effect. Attached Figure Description

[0019] Figure 1A schematic diagram of the hydraulic cylinder piston rod surface polishing device provided in this embodiment of the utility model;

[0020] Figure 2 for Figure 1 Another structural diagram from another perspective;

[0021] Figure 3 for Figure 1 Structural sectional view;

[0022] Figure 4 for Figure 3 Another structural diagram from another perspective;

[0023] Figure 5 This is a schematic diagram of the cylindrical outer shell in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure for mounting the outer shell in an embodiment of this utility model;

[0025] Figure 7 for Figure 6 A schematic diagram of the exploded structure;

[0026] Figure 8 This is a schematic diagram of the annular semi-shell structure in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the initial state of the electromagnet in an embodiment of this utility model;

[0028] Figure 10 This is a schematic diagram showing the changing state of the electromagnet in an embodiment of this utility model;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Processing table; 2. Guide roller; 21. Mounting frame; 22. Rotating roller; 3. Cylindrical outer shell; 31. Hollow cylinder; 32. Restricting cylinder; 33. Connecting plate; 4. Mounting shell; 41. Annular semi-shell; 42. Support frame; 43. Connecting lug; 44. Boss; 45. Mounting groove; 46. Cable routing groove; 5. Electromagnet; 6. Controller; 7. Piston rod. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0034] like Figures 1-5 As shown, the hydraulic cylinder piston rod surface polishing device includes: a magnetic needle polishing mechanism;

[0035] The magnetic needle polishing mechanism includes a cylindrical outer shell 3, which includes a hollow cylinder 31 located above the processing table 1. Both ends of the hollow cylinder 31 are provided with limiting cylinders 32. The inner diameter of the opposite side of the two limiting cylinders 32 is the same as the inner diameter of both ends of the hollow cylinder 31, and the inner diameter of the opposite side of the two limiting cylinders 32 is smaller than the inner diameter of both ends of the hollow cylinder 31.

[0036] The hollow cylinder 31 is fitted with a connecting plate 33, and the surface of the connecting plate 33 is provided with mounting holes. The cylindrical outer shell 3 is filled with a magnetic needle. The magnetic needle is preferably made of a high-hardness magnetic alloy material, such as martensitic stainless steel or iron-chromium-boron alloy.

[0037] Based on the above, the cylindrical outer shell 3 provides sufficient space for the movement of the magnetic needle, allowing the magnetic needle to move inside the hollow cylinder 31. Furthermore, the setting of the limiting cylinder 32 makes it more difficult for the magnetic needle to escape from the inside of the limiting cylinder 32 under the action of gravity when it makes circular motion, thereby reducing the possibility of the magnetic needle moving to the outside of the cylindrical outer shell 3.

[0038] like Figures 1-3 As shown, a processing table 1 is provided at the bottom of the mounting housing 4, and two guide rollers 2 are provided on the upper surface of the processing table 1. The two guide rollers 2 are respectively provided at both ends of the cylindrical housing 3.

[0039] The guide roller 2 includes a mounting frame 21 disposed on the upper surface of the processing table 1, and a rotating roller 22 is disposed between the two side walls inside the mounting frame 21.

[0040] Based on the above, the rotating roller 22 serves to support the piston rod 7, and when the piston rod 7 is pushed forward, the rotating roller 22 rotates, making the feed of the piston rod 7 more stable.

[0041] like Figures 6-8 As shown, the cylindrical outer shell 3 is fitted with an installation shell 4. The installation shell 4 includes two annular semi-shells 41 fitted outside the hollow cylinder 31. The two annular semi-shells 41 are connected to the connecting plate 33 by screws and nuts. Connecting ears 43 are provided on the circumferential surface of the annular semi-shells 41, and the connecting ears 43 correspond one-to-one with the mounting holes.

[0042] The annular half-shell 41 has a boss 44 and a support frame 42 at its upper and lower ends, respectively. The upper surface of the boss 44 has an opening that communicates with the wiring groove 46 to allow the cable (preferably a shielded cable) to come out from the inside of the mounting shell 4 and be electrically connected to the controller 6. The top of the boss 44 is equipped with the controller 6, which is preferably a TSR1KWZ solid-state relay. Each of the two annular half-shells 41 has multiple mounting slots 45 and a wiring groove 46 on one side. One wiring groove 46 communicates with multiple mounting slots 45. The number of mounting slots 45 is even and they are distributed in a ring at equal intervals along the inner circle of the wiring groove 46.

[0043] Based on the above, when the mounting housing 4 is fitted onto the outside of the hollow cylinder 31, the connecting ear 43 can be connected to the connecting plate 33 by screws and nuts. At this time, the support frame 42 plays a supporting role for the mounting housing 4 and the cylindrical housing 3. The boss 44 provides installation space for the controller 6, and the position of the controller 6 can be adjusted according to actual needs. That is, after the controller 6 is separated from the boss 44, it is only electrically connected to the electromagnet 5 through a cable.

[0044] The mounting slot 45 provides space for the installation of the electromagnet 5. The wiring slot 46 allows the cables used for electrical connection between the electromagnet 5 and the controller 6 to be arranged in an orderly manner inside the mounting housing 4 and extend from the opening provided on the upper surface of the boss 44 to the outside of the mounting housing 4.

[0045] like Figure 4 and Figure 9 As shown, the mounting housing 4 is equipped with a plurality of electromagnets 5, which are controlled by a controller 6.

[0046] The number of electromagnets 5 is even, and they are disposed inside the mounting groove 45, with the magnetic poles of two adjacent electromagnets 5 being opposite.

[0047] Based on the above, electromagnet 5 generates magnetic force when energized, thus providing a magnetic field. Controller 6 controls the direction of the current; changing the current direction alters the magnetic poles of electromagnet 5, i.e., from... Figure 9 The state changes to Figure 10 The state repeats itself in a cycle.

[0048] The working principle is as follows:

[0049] The controller 6 outputs a periodically changing current signal to control the direction of the current in the electromagnet 5.

[0050] Initially, adjacent electromagnets 5 are arranged in an alternating NSNS pattern to form a ring magnetic field. When the magnetic field remains unchanged, the magnetic needles are arranged in a chain along the magnetic field.

[0051] When the current direction changes, all winding magnetic poles reverse synchronously (N→S, S→N), and the magnetic field direction changes accordingly. At this time, the rapid reversal of the magnetic field direction causes the magnetic needle to be subjected to a reverse magnetic torque, forcing it to rearrange the mines along the magnetic field direction again. That is, the magnetic needle rotates 180 degrees, accompanied by collision and sliding friction, polishing the surface of piston rod 7. After the rotation is completed, the magnetic needles reform a new chain arrangement, but will oscillate under the action of inertia.

[0052] When the current is continuously and periodically switched (frequency 50-500Hz), the magnetic field forms a dynamic rotating gradient, and the magnetic needle generates a composite motion under the action of the magnetic force: rolling in the circumferential direction (linear velocity 0.5-2m / s), and simultaneously vibrating at high frequency in the axial direction (amplitude 0.1-0.5mm, frequency consistent with the current switching frequency). At this time, the magnetic needle will undergo three types of motion: circumferential rolling (i.e., circumferential motion along the circumferential surface of the piston rod 7, driven by the change in the spatial distribution of the magnetic field), axial vibration (caused by the thrust force generated by the alternating change of magnetic poles), and rotational motion (the flipping of a single magnetic needle during the flipping process). The above three motions interact with each other, causing the magnetic needle to perform complex three-dimensional composite motion inside the cylindrical shell 3, thereby fully polishing the surface of the piston rod 7.

[0053] The piston rod 7 is supported by the guide roller 2 and fed at a constant speed (feeding speed 50-200mm / min). It can be fed manually or by means of an electric telescopic rod. When it passes through the cylindrical outer shell 3, it continuously collides and rubs with the magnetic needle.

[0054] The circumferentially rolling magnetic force radially grinds the surface of piston rod 7, removing surface protrusions;

[0055] Axially vibrating magnetic needles penetrate deep into recessed structures such as keyways and splines to achieve polishing in hard-to-reach areas;

[0056] The adaptive movement of the magnetic needle ensures uniform contact with the irregular surface, ultimately achieving a surface roughness of Ra 0.05-0.8μm.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for polishing the surface of a hydraulic cylinder piston rod, characterized in that, include: Magnetic needle polishing mechanism; The magnetic needle polishing mechanism includes a cylindrical shell (3), and an installation shell (4) is fitted on the outside of the cylindrical shell (3). Multiple electromagnets (5) are installed inside the installation shell (4). The electromagnets (5) are controlled by a controller (6). Magnetic needles are placed inside the cylindrical shell (3).

2. The hydraulic cylinder piston rod surface polishing device according to claim 1, characterized in that, The bottom of the mounting housing (4) is provided with a processing table (1), and the upper surface of the processing table (1) is provided with two guide rollers (2), which are respectively located at both ends of the cylindrical housing (3).

3. The hydraulic cylinder piston rod surface polishing device according to claim 2, characterized in that, The guide roller (2) includes a mounting frame (21) disposed on the upper surface of the processing table (1), and a rotating roller (22) is disposed between the two side walls inside the mounting frame (21).

4. The hydraulic cylinder piston rod surface polishing device according to claim 2, characterized in that, The cylindrical outer shell (3) includes a hollow cylinder (31) located above the processing table (1). Both ends of the hollow cylinder (31) are provided with limiting cylinders (32). The inner diameter of the opposite side of the two limiting cylinders (32) is the same as the inner diameter of both ends of the hollow cylinder (31), and the inner diameter of the opposite side of the two limiting cylinders (32) is smaller than the inner diameter of both ends of the hollow cylinder (31).

5. The hydraulic cylinder piston rod surface polishing device according to claim 4, characterized in that, The hollow cylinder (31) is fitted with a connecting plate (33), and the surface of the connecting plate (33) is provided with mounting holes.

6. The hydraulic cylinder piston rod surface polishing device according to claim 5, characterized in that, The mounting housing (4) includes two annular semi-shells (41) that are fitted outside the hollow cylinder (31). The two annular semi-shells (41) are connected to the connecting plate (33) by screws and nuts. Connecting ears (43) are provided on the circumferential surface of the annular semi-shells (41), and the connecting ears (43) correspond one-to-one with the mounting holes.

7. The hydraulic cylinder piston rod surface polishing device according to claim 6, characterized in that, The annular semi-shell (41) is provided with a boss (44) and a support frame (42) at its upper and lower ends, respectively, and a controller (6) is provided at the top of the boss (44).

8. The hydraulic cylinder piston rod surface polishing device according to claim 7, characterized in that, Each of the two annular semi-shells (41) is provided with a plurality of mounting slots (45) and a wiring slot (46) on one side of the opposite side. One wiring slot (46) is connected to the plurality of mounting slots (45) at the same time. The plurality of mounting slots (45) is an even number and is distributed in an annular equidistant manner along the inner circle of the wiring slot (46).

9. The hydraulic cylinder piston rod surface polishing device according to claim 8, characterized in that, The number of electromagnets (5) is even and they are disposed inside the mounting slot (45), with the initial magnetic poles of two adjacent electromagnets (5) being opposite.

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