A metal surface polishing device

Abstract

The application relates to the technical field of metal surface treatment, and discloses a metal surface polishing device, which comprises a supporting frame, a positioning rotary seat, a power transmission assembly and a polishing head, the positioning rotary seat is fixed to the end part of the supporting frame through a magnetic bottom disc, an end grinding wheel is arranged at the bottom of the bearing inner cavity of the positioning rotary seat and used for polishing the outer edge of the end part of a cylindrical metal synchronously, the power transmission assembly comprises a variable resistance transmission mechanism, when an axial moving main shaft is pressed to move upwards, the gradually changing resistance cover is moved relative to the conductive contact group, an electrical closed loop dynamic adjustment polishing pressure is constructed, synchronous and efficient polishing of the side surface and the end part of the cylindrical metal is realized, the overall structure is compact and low in cost, and the problems of large size and polishing blind area of traditional polishing equipment are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment technology, specifically to a metal surface polishing device. Background Technology

[0002] Uniform polishing of cylindrical metal surfaces is a key process in many precision manufacturing fields, and its polishing precision directly affects the performance of the final product.

[0003] Existing cylindrical metal polishing equipment generally suffers from large size and complex mechanical structure, resulting in high procurement and maintenance costs for enterprises.

[0004] Meanwhile, existing equipment can usually only polish the side surface of the cylinder when performing polishing operations, and cannot effectively polish the outer edge of the end. This easily leaves processing dead corners, requiring secondary clamping and line change processing, which seriously affects processing efficiency and polishing consistency.

[0005] In addition, traditional devices are unable to adjust the polishing pressure in real time and automatically according to the subtle changes on the cylindrical metal surface, which can easily lead to over-polishing or under-polishing. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a metal surface polishing device that is highly practical and stable, thus solving the problems mentioned in the background section.

[0007] This invention provides the following technical solution: a metal surface polishing device, comprising:

[0008] Support frame;

[0009] A positioning rotating seat is fixed to the top of one end of the support frame and is used to place the cylindrical metal to be polished;

[0010] A power transmission component, one end of which is mounted and fixed to the top of the other end of the support frame;

[0011] And a polishing head, which is fixedly mounted on the output end of the power transmission assembly and abuts against the surface of the cylindrical metal;

[0012] The positioning rotating seat includes a supporting inner cavity, and an end grinding wheel is rotatably connected to the bottom inner wall of the supporting inner cavity. The end grinding wheel is used to polish the end of the cylindrical metal.

[0013] As a preferred embodiment of the present invention, the support frame includes a bottom main beam, a bottom hinge seat is fixedly mounted on the top of one end of the bottom main beam, an angle adjustment arm is rotatably connected to the inner wall of the bottom hinge seat, and a top snap-fit ​​sleeve for connecting to the power transmission component is embedded in the inner wall of the top end of the angle adjustment arm.

[0014] As a preferred embodiment of the present invention, the positioning rotating seat further includes a lower connecting column fixedly assembled at the bottom of the bearing inner cavity, and a magnetic suction base is fixedly assembled at the bottom end of the lower connecting column, and the magnetic suction base is magnetically fixed to the support frame.

[0015] As a preferred embodiment of the present invention, the power transmission assembly includes a drive motor that provides power and a variable resistance transmission mechanism connected to the drive motor, wherein the polishing head is fixedly assembled with the output end of the variable resistance transmission mechanism.

[0016] As a preferred embodiment of the present invention, the variable resistance transmission mechanism includes a transmission housing, and a first bearing and a second bearing support are fixedly mounted on the inner wall of the transmission housing; a slidable axially movable main shaft passes through the inner wall of the first bearing, and the bottom end of the axially movable main shaft is fixedly mounted to the polishing head.

[0017] As a preferred embodiment of the present invention, a sliding guide groove is provided on the outer wall of the top end of the axially moving spindle, and a power connector gear is sleeved on the top end of the axially moving spindle. The power connector gear is slidably connected to the axially moving spindle through the sliding guide groove.

[0018] As a preferred embodiment of the present invention, a gradient resistor cover is fixedly mounted on the top end of the axially moving spindle, and two sets of conductive contact groups are provided on both sides of the gradient resistor cover; a spring located on the inner wall of the gradient resistor cover is sleeved on the outer wall of the axially moving spindle, and the top end of the spring abuts against a top abutting member sleeved on the axially moving spindle.

[0019] As a preferred embodiment of the present invention, the resistance value of the gradient resistor cover is gradually distributed from top to bottom. When the axial moving main shaft is pressed and moves axially, the gradient resistor cover and the conductive contact group generate relative displacement to change the resistance value of the circuit.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This metal surface polishing device, by setting an end grinding wheel at the bottom of the bearing cavity of the positioning rotary seat, allows the polishing head to apply pressure to the side of the cylindrical metal and drive it to rotate, while the metal end can abut against the end grinding wheel and generate relative friction. This allows the device to complete the polishing operation of the side and end of the cylindrical metal simultaneously in a single clamping state, saving the time spent on secondary clamping and stopping in traditional processing, and effectively avoiding the processing errors caused by multiple positioning accumulations, thus improving polishing accuracy and efficiency.

[0022] A magnetic chassis is used to enable quick assembly and disassembly of the positioning rotating seat and support frame. Combined with the rotational cooperation of the bottom hinge seat and the angle adjustment arm, a flexible angle adjustment mechanism is constructed. This allows the processing angle of the power transmission component to be flexibly and finely adjusted according to the specific size of the metal to be polished. This replaces the bulky rigid support and adjustment base of traditional polishing equipment, significantly reducing the overall size and floor space of the equipment and lowering the manufacturing cost.

[0023] The variable resistance transmission mechanism is equipped with a displacement-resistance conversion component consisting of an axially moving spindle, a gradually changing resistance cover, and a spring. During polishing, if the contact resistance of the polishing head increases instantaneously, the axially moving spindle will overcome the spring force to generate axial displacement, causing the gradually changing resistance cover to slide relative to the conductive contact group. This instantly changes the resistance value connected to the control circuit. The physical pressure change at the polishing end is directly converted into an electrical analog signal, providing hardware feedback support for the dynamic power distribution of the external drive motor. This effectively alleviates motor overload or local overcutting caused by sudden excessive pressure, and improves the consistency of surface polishing quality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the planar perspective structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the transmission housing structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the axially moving spindle structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the variable resistance transmission mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the positioning rotary seat structure of the present invention;

[0030] Figure 7 This is a schematic diagram showing the installation position of the part and the polishing head of the present invention.

[0031] In the diagram: 1. Support frame; 2. Positioning rotary seat; 3. Power transmission assembly; 4. Polishing head;

[0032] 101. Bottom-mounted main beam; 102. Bottom hinge seat; 103. Angle adjustment arm; 104. Top snap-fit ​​sleeve;

[0033] 201. Supporting inner cavity; 202. End grinding wheel; 203. Lower connecting column; 204. Magnetic base;

[0034] 31. Drive motor; 32. Variable resistance transmission mechanism;

[0035] 321. Transmission housing; 322. Axial moving spindle; 323. First bearing; 324. Power connector gear; 325. Sliding guide groove; 326. Second bearing support; 327. Gradient resistor cover; 328. Spring; 329. Conductive contact assembly; 330. Top abutment. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this application, it should be understood that the terms "top," "bottom," "top," "bottom," "one end," "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the term "pair" refers to two components that are arranged opposite or in conjunction with each other.

[0038] Figure 1 A schematic diagram of a metal surface polishing device is shown. Figure 1 As shown in the figure, this application embodiment provides a metal surface polishing device, which includes a support frame 1, with a positioning rotating seat 2 magnetically fixed to the top of one end of the support frame 1. A power transmission component 3 is fixedly mounted on the top of the other end of the support frame 1, and a polishing head 4 is fixedly assembled at the output end of the power transmission component 3.

[0039] The top of the positioning rotary seat 2 is used to place a cylindrical metal, and the power transmission component 3 is clamped by the support frame 1 so that the polishing head 4 contacts the cylindrical metal surface on the top of the positioning rotary seat 2.

[0040] According to this embodiment, when the metal surface polishing device is working, the polishing head 4 contacts the cylindrical metal surface on the top of the positioning rotating seat 2, thereby achieving polishing.

[0041] By rotating the positioning rotary seat 2, the contact direction between the cylindrical metal and the polishing head 4 is set at ±5 degrees to adapt to the needs of different curvatures or polishing processes.

[0042] While rubbing and polishing the metal surface, the polishing head 4 can drive the cylindrical metal to rotate within the cavity at the top of the positioning rotating seat 2, thereby achieving the function of polishing the surface of the cylindrical metal and driving its rotation.

[0043] At the same time, a downward force is applied to the cylindrical metal towards the fixed end of the power transmission assembly 3 so that while the cylindrical metal rotates on the inner wall of the top of the positioning rotating seat 2, the end of the cylindrical metal can be polished by the end grinding wheel 202 in the positioning rotating seat 2.

[0044] In practical applications, the overall operation of the metal surface polishing device is as follows: First, the cylindrical metal is placed on the positioning rotating seat 2, and the power transmission component 3 is clamped and fixed by the support frame 1.

[0045] Then the power transmission component 3 is activated, driving the polishing head 4 to rotate and contact the metal surface for grinding.

[0046] Prior to this, the positioning rotary seat 2 drives the cylindrical metal to rotate at a certain angle, forming a compound relative motion;

[0047] While the polishing head 4 rubs and polishes the metal surface, it can drive the cylindrical metal to rotate in the cavity at the top of the positioning rotating seat 2. At the same time, the end of the cylindrical metal is polished by the end grinding wheel 202 in the positioning rotating seat 2.

[0048] In one embodiment, the support frame 1 mentioned above will be described exemplarily below.

[0049] like Figure 2 As shown, the support frame 1 includes a bottom main beam 101, and a bottom hinge seat 102 is fixedly mounted on the top of one end of the bottom main beam 101. An angle adjustment arm 103 is rotatably connected to the inner wall of the bottom hinge seat 102.

[0050] The top inner wall of the angle adjustment arm 103 is inlaid with a top snap sleeve 104. The end of the angle adjustment arm 103 is sleeved by two sets of top snap sleeves 104, and the top snap sleeves 104 are located on the top inner wall of the angle adjustment arm 103 for snap-fit ​​fixation.

[0051] Specifically, the bottom hinge seat 102 has a rotating shaft inside, and the angle adjustment arm 103 is rotatably mounted on the bottom hinge seat 102 through the rotating shaft. The top snap sleeve 104 is snapped into the housing of the power transmission component 3 by means of elastic snap or interference fit.

[0052] The above structure enables a flexible and adjustable connection between the support frame 1 and the power transmission component 3.

[0053] The angle of the power transmission component 3 can be adjusted by the relative rotation of the bottom hinge seat 102 and the angle adjustment arm 103, thereby adjusting the angle between the polishing head 4 and the positioning rotary seat 2.

[0054] The initial angle of the polishing head 4 can be flexibly and finely adjusted according to the diameter and surface morphology of the cylindrical metal, effectively avoiding local overcutting or polishing dead angles caused by angle deviation, thus improving the applicability and polishing uniformity of the device.

[0055] like Figure 3 As shown, the positioning rotary seat 2 includes a supporting inner cavity 201, with a cylindrical metal located on the top inner wall of the supporting inner cavity 201.

[0056] An end grinding wheel 202 is rotatably connected to the bottom inner wall of the bearing inner cavity 201 near the bottom hinge seat 102.

[0057] The bottom of the supporting inner cavity 201 is fixedly equipped with a lower connecting column 203, and the bottom end of the lower connecting column 203 is fixedly equipped with a magnetic base 204. A magnet is embedded in the center of the bottom end of the magnetic base 204 for magnetic fixation to the top of the support frame 1.

[0058] Specifically, the end grinding wheel 202 is rotatably mounted at the bottom of the bearing inner cavity 201 via a bearing, and the magnet in the magnetic chassis 204 is attracted to the ferromagnetic adsorption plate on the bottom main beam 101.

[0059] On the one hand, the end grinding wheel 202 is designed so that when the end of the cylindrical metal is under pressure, the end grinding wheel 202 can contact the end face of the metal and perform rotational grinding, thereby achieving synchronous polishing of the side surface and the end face and improving processing efficiency.

[0060] On the other hand, the magnetic fixing method of the magnetic chassis 204 not only enables the quick disassembly and replacement of the positioning rotary seat 2, but also absorbs high-frequency vibrations during the polishing process by utilizing the slight elastic deformation of the magnetic interface, thus playing a good shock absorption and buffering role and further ensuring the smoothness of the polished surface.

[0061] like Figures 2-5 As shown, the power transmission assembly 3 includes a drive motor 31 and a variable resistance transmission mechanism 32. The drive motor 31 is used to provide power output, and the variable resistance transmission mechanism 32 is used to transmit the power output to the polishing head 4 and drive the polishing head 4 to rotate.

[0062] The variable resistance transmission mechanism 32 includes a transmission housing 321, and a first bearing 323 and a second bearing support 326 are fixedly assembled on the inner wall of the transmission housing 321.

[0063] The inner wall of the first bearing 323 is rotatably connected to an axially movable main shaft 322.

[0064] The top end of the axially moving spindle 322 is fitted with a power connector gear 324, and a sliding guide groove 325 is provided on the outer wall of the top end of the axially moving spindle 322. The axially moving spindle 322 is slidably connected to the power connector gear 324 through the sliding guide groove 325.

[0065] A gradient resistor cover 327 is fixedly mounted on the top end of the axially moving spindle 322, and a spring 328 is sleeved on the outer wall of the top end of the axially moving spindle 322, with the spring 328 located on the inner wall of the gradient resistor cover 327.

[0066] Two sets of conductive contact groups 329 are respectively arranged on the top and bottom of both sides of the gradient resistor cover 327, and the top of the spring 328 abuts against the top abutment member 330.

[0067] The bottom end of the axially movable spindle 322 is fixedly assembled with the polishing head 4.

[0068] Specifically, the power connector gear 324 meshes with the output shaft of the drive motor 31 through gear meshing, and the sliding guide groove 325 extends axially along the axial moving main shaft 322, so that the axial moving main shaft 322 can move axially up and down along the inner wall of the first bearing 323 while receiving torque rotation.

[0069] The gradient resistor cover 327 partially covers the spring 328, the top of the spring 328 abuts against the bottom of the top abutment 330, and the top abutment 330 is sleeved with the axially moving spindle 322.

[0070] The second bearing support 326, spring 328, and top abutment 330 provide radial support and axial limit for the axially moving main shaft 322.

[0071] The gradient resistor cover 327 is made of carbon film or wire winding process, and its resistance value is linearly or non-linearly distributed from top to bottom (for example, the resistance value gradually increases from top to bottom).

[0072] In actual operation, when the polishing head 4 is subjected to the reverse pressure of the metal surface, the polishing head 4 drives the axially moving spindle 322 to move upward on the inner wall of the first bearing 323, at which time the spring 328 contracts.

[0073] The upward movement of the axially moving main shaft 322 causes the gradient resistor cover 327 to move synchronously, so that the gradient resistor cover 327 and the upper and lower sets of conductive contact groups 329 achieve relative displacement.

[0074] Because the resistance value of the gradient resistor cover 327 is gradually distributed, the relative displacement changes the position of the resistance contact group 329, thereby causing the magnitude of the current flowing through the conductive contact group 329 to change in real time.

[0075] The current change signal is transmitted to an external controller for dynamically adjusting the output speed or torque of the drive motor 31.

[0076] The variable resistance transmission mechanism 32 can be used to construct a closed-loop pressure feedback system that combines mechanical and electrical components.

[0077] When the polishing pressure is too high, the spindle moves upward, causing a change in resistance, and the system automatically reduces the power output of the drive motor 31.

[0078] When the pressure is too low, the spring 328 resets, causing the axially moving spindle 322 to move downward, and the system automatically increases the power output.

[0079] The gradient resistance design optimizes the power distribution, allowing the pressure of the polishing head 4 on the metal surface to be adjusted according to the contact conditions, thus solving the problem of excessive pressure causing excessive load and damage to the drive motor 31.

[0080] On the other hand, the up-and-down movement of the axial moving spindle 322 can buffer the pressure when the polishing head 4 is in contact with or impacts the metal surface, thereby reducing the damage rate of the polishing head 4.

[0081] Furthermore, it should be noted that in some optional embodiments, the gradient resistor layer of the gradient resistor cover 327 can be made by coating the surface of the insulating substrate with a conductive plastic film or a metal oxide film material to ensure wear resistance and service life.

[0082] The magnetic fixing method of the magnetic chassis 204 can also be replaced by bolt fastening or snap-locking structure to adapt to the processing needs of cylindrical metals of different weights and sizes.

[0083] The top abutment 330 may be made of polytetrafluoroethylene (PTFE) to reduce wear when rubbing against the top of the spring 328.

[0084] A damping pad or locking nut can be added between the angle adjustment arm 103 and the bottom hinge seat 102 to achieve self-locking after adjustment to the target angle (such as ±5 degrees) to prevent the angle from shifting due to polishing vibration.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0086] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal surface polishing apparatus, characterized in that, include: Support frame (1); The positioning rotating seat (2) is fixed to the top of one end of the support frame (1) and is used to place the cylindrical metal to be polished; The power transmission assembly (3) is mounted and fixed at one end to the top of the other end of the support frame (1); And a polishing head (4), which is fixedly assembled at the output end of the power transmission assembly (3) and abuts against the surface of the cylindrical metal; The positioning rotating seat (2) includes a bearing inner cavity (201), and an end grinding wheel (202) is rotatably connected to the bottom inner wall of the bearing inner cavity (201). The end grinding wheel (202) is used to polish the end of the cylindrical metal.

2. The metal surface polishing apparatus according to claim 1, characterized in that, The support frame (1) includes a bottom main beam (101), and a bottom hinge seat (102) is fixedly mounted on the top of one end of the bottom main beam (101). The inner wall of the bottom hinge seat (102) is rotatably connected to one end of an angle adjustment arm (103), and the top inner wall of the angle adjustment arm (103) is inlaid with a top snap sleeve (104) for connecting with the power transmission assembly (3).

3. The metal surface polishing apparatus according to claim 1, characterized in that, The positioning rotating seat (2) also includes a lower connecting column (203) fixedly assembled at the bottom of the bearing inner cavity (201). A magnetic base (204) is fixedly assembled at the bottom end of the lower connecting column (203), and the magnetic base (204) is magnetically fixed to the support frame (1).

4. The metal surface polishing apparatus according to claim 1, characterized in that, The power transmission assembly (3) includes a drive motor (31) that provides power and a variable resistance transmission mechanism (32) connected to the drive motor (31). The polishing head (4) is fixedly assembled with the output end of the variable resistance transmission mechanism (32).

5. The metal surface polishing apparatus according to claim 4, characterized in that, The variable resistance transmission mechanism (32) includes a transmission housing (321), and a first bearing (323) and a second bearing support (326) are fixedly assembled on the inner wall of the transmission housing (321); a slidable axially movable spindle (322) is provided through the inner wall of the first bearing (323), and the bottom end of the axially movable spindle (322) is fixedly assembled with the polishing head (4).

6. The metal surface polishing apparatus according to claim 5, characterized in that, The top outer wall of the axial moving spindle (322) is provided with a sliding guide groove (325), and a power connector gear (324) is sleeved on the top of the axial moving spindle (322). The power connector gear (324) is slidably connected to the axial moving spindle (322) through the sliding guide groove (325).

7. The metal surface polishing apparatus according to claim 5, characterized in that, The top end of the axial moving spindle (322) is fixedly fitted with a gradient resistor cover (327), and two sets of conductive contact groups (329) are provided on both sides of the gradient resistor cover (327); a spring (328) located on the inner wall of the gradient resistor cover (327) is sleeved on the outer wall of the axial moving spindle (322), and the top end of the spring (328) abuts against a top abutting member (330) sleeved on the axial moving spindle (322).

8. The metal surface polishing apparatus according to claim 7, characterized in that, The resistance value of the gradient resistor cover (327) is gradually distributed from top to bottom. When the axial moving main shaft (322) is pressed and moves axially, the gradient resistor cover (327) and the conductive contact group (329) generate relative displacement to change the resistance value of the circuit.

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