Grinding device

Abstract

The invention belongs to the technical field of bicycle manufacturing, and particularly relates to a grinding device which comprises a grinding head, a driving mechanism and an adjusting mechanism. The driving mechanism is provided with a multi-degree-of-freedom moving driving end, the grinding head is slidably arranged at the driving end, and the driving mechanism is used for driving the grinding head to move along different curved surfaces of the front fork; the adjusting mechanism is connected with the grinding head and used for applying acting force towards the front fork to the grinding head so that the actual grinding force applied by the grinding head to the front fork can be kept at a preset value. Before grinding, the acting force is applied to the front fork through the adjusting mechanism, so that the actual grinding force borne by the front fork can be kept at the preset value, it can be guaranteed that the grinding force borne by all positions of the front fork in the grinding process is kept unchanged, the grinding uniformity of all positions of the front fork can be guaranteed, and local over-grinding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycle manufacturing, and particularly to a grinding device. Background Art

[0002] The front fork can change the running direction of the front wheel and play a guiding role for the bicycle. To reduce the overall weight of the bicycle, carbon fiber with light weight and high tensile strength is mostly used for molding by die pressing and blowing. After molding, there will be differences in the surfaces of various parts of the product. Therefore, after the front fork is molded, it is also necessary to perform grinding treatment on the front fork.

[0003] Traditional front fork grinding processes mostly rely on manual labor or mechanical processing equipment with fixed paths. During the grinding process, due to the complex curved surface shape of the front fork, it is difficult to ensure the grinding uniformity of each position of the front fork, and local over-grinding is likely to occur.

[0004] Therefore, the above problems need to be solved urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide a grinding device to ensure the grinding uniformity of each position of the front fork and avoid local over-grinding.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A grinding device for grinding a front fork, comprising:

[0008] A grinding head for grinding the front fork;

[0009] A driving mechanism having a driving end with multiple degrees of freedom of movement, the grinding head is slidably arranged on the driving end, and the driving mechanism is used to drive the grinding head to move along different curved surfaces of the front fork;

[0010] An adjusting mechanism connected to the grinding head and used to apply a force towards the front fork to the grinding head, so that the actual grinding force applied by the grinding head to the front fork remains at a preset value.

[0011] Preferably, a receiving groove is formed in the driving end, and the grinding head includes a base that is adapted to slide in the receiving groove;

[0012] The adjusting mechanism includes a gas source, a gas pipeline and a pressure regulating valve. The gas source can convey compressed gas between the receiving groove and the base through the gas pipeline to apply a force to the grinding head, and the pressure regulating valve is arranged on the gas pipeline to keep the pressure between the receiving groove and the base at a preset pressure value.

[0013] Preferably, an output pipeline communicated with the gas pipeline is vertically arranged at the bottom of the receiving groove, and the output pipeline is columnar.

[0014] A sealing column adapted to the sealing pipe is vertically arranged on the top of the base, and the sealing column is movably sleeved in the output pipe to form a sealing cavity communicated with the gas pipeline.

[0015] Preferably, a long circular hole is provided on the side wall of one of the receiving groove and the base, and the length direction of the long circular hole is the same as the sliding direction of the grinding head;

[0016] A limiting column is arranged on the other side wall of the accommodating groove and the base, and the limiting column can cooperate with the oblong hole to limit the movement stroke of the grinding head.

[0017] Preferably, a slide rail is provided on a side wall of one of the receiving groove and the base, and the length direction of the slide rail is the same as the sliding direction of the grinding head;

[0018] A slide groove matched with the slide rail is arranged on the other side wall of the accommodating groove and the base.

[0019] Preferably, one of the slide rails and one of the slide grooves constitutes a set of sliding structures, and at least two sets of sliding structures are evenly distributed between the accommodating groove and the base.

[0020] Preferably, the shape of the slide rail is a "匸" shape.

[0021] Preferably, a plurality of guide posts are provided between the base and the receiving groove, and the length direction of the plurality of guide posts is the same as the sliding direction of the grinding head.

[0022] Preferably, four guide columns are provided.

[0023] Preferably, the base is square.

[0024] Beneficial effects of the present invention:

[0025] The grinding device of the present invention applies a force to the front fork through an adjustment mechanism before grinding, so that the actual grinding force applied to the front fork can be maintained at a preset value, thereby ensuring that the grinding force applied to various parts of the front fork remains unchanged during the grinding process, thereby ensuring the uniformity of grinding at various positions of the front fork and avoiding local over-grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the structure of the driving end and the grinding head in an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 A cross-sectional view of

[0028] Figure 3It is a schematic structural diagram of a grinding head in an embodiment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of a grinding device in an embodiment of the present invention;

[0030] Figure 5 It is a schematic structural diagram of a jacking mechanism and a front fork in an embodiment of the present invention.

[0031] In the figure:

[0032] 100, front fork; 110, upper tube; 120, lower tube;

[0033] 1, grinding head; 11, base; 12, sealing column; 13, oblong hole; 14, track; 15, pneumatic motor; 16, grinding seat;

[0034] 2, driving mechanism; 21, driving end; 211, receiving groove; 212, output pipeline; 213, limiting column;

[0035] 31, gas path joint;

[0036] 4, clamping mechanism; 5, rotating mechanism; 6, carrier; 7, base; 8, baffle;

[0037] 9, jacking mechanism; 91, jacking cylinder; 92, jacking rod. Detailed implementation manners

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0039] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] During the grinding process of the traditional front fork, due to the complex curved surface shape of the front fork, the grinding forces applied to different positions will change, thus it is easy to cause the phenomenon of over-grinding or under-grinding locally. For this reason, this embodiment aims to propose a grinding device to dynamically adjust the grinding force during the grinding process, so as to ensure the grinding uniformity of each position of the front fork.

[0043] Specifically, please refer to Figures 1 to 5 , the grinding device includes a grinding head 1, a driving mechanism 2 and an adjusting mechanism. The grinding head 1 is used for grinding the front fork 100; the driving mechanism 2 has a driving end 21 with multiple degrees of freedom of movement, the grinding head 1 is slidably arranged on the driving end 21, and the driving mechanism 2 is used for driving the grinding head 1 to move along different curved surfaces of the front fork 100; the adjusting mechanism is connected to the grinding head 1 and is used for applying a force towards the front fork 100 to the grinding head 1, so that the actual grinding force applied by the grinding head 1 to the front fork 100 is maintained at a preset value. Wherein, the preset value is set according to the grinding amount of the front fork 100, and no specific limitation is made here.

[0044] It can be understood that before grinding, by applying a force to the front fork 100 through the adjusting mechanism, the actual grinding force received by the front fork 100 can be maintained at the preset value, so that it can be ensured that the grinding forces received by each part of the front fork remain unchanged during the grinding process, and further the grinding uniformity of each position of the front fork 100 can be ensured, and local over-grinding can be avoided.

[0045] In this embodiment, please refer to Figure 2 And Figure 3, a receiving groove 211 is formed in the driving end 21, and the grinding head 1 includes a square base 11 that is adapted to slide in the receiving groove 211; the adjusting mechanism includes a gas source, a gas pipeline and a pressure regulating valve. The gas source can convey compressed gas between the receiving groove 211 and the base 11 through the gas pipeline to apply a force to the grinding head 1. The pressure regulating valve is arranged on the gas pipeline so that the pressure between the receiving groove 211 and the base 11 remains at a preset pressure value. It can be understood that the force applied to the grinding head 1 by this adjusting mechanism is air buoyancy, and under the action of the pressure regulating valve, the pressure between the receiving groove 211 and the base 11 can be kept at a preset value, that is, under the action of the pressure regulating valve, the gas pressure between the receiving groove 211 and the base 11 can be kept constant, so as to ensure the uniformity of grinding at each place. And the compressed gas and the grinding head 1 are in flexible contact, so that it is possible to avoid rigid collision between the grinding head 1 and the adjusting mechanism when the grinding head 1 switches to different curved surfaces, so that the grinding device can be applied to more complex working conditions and improve the applicability.

[0046] Among them, the gas pipeline is divided into a first pipeline and a second pipeline. The first pipeline is arranged at the driving end 21, one end of which is communicated with the receiving groove 211, and the other end is communicated with one end of the second pipeline through a gas joint 31. The other end of the second pipeline is communicated with the gas source, and the pressure regulating valve can be arranged on the first pipeline or the second pipeline.

[0047] Of course, in some other feasible embodiments, the adjusting mechanism can also be a magnetic levitation structure, which uses magnetic fields to levitate the grinding head 1 and controls the levitation gap and contact force by adjusting the magnetic field strength, which will not be elaborated here.

[0048] Furthermore, an output pipeline 212 communicated with the gas pipeline is vertically arranged at the bottom of the receiving groove 211, and the output pipeline 212 is arranged in a column shape; a sealing column 12 adapted to the sealing pipeline is vertically arranged at the top of the base 11, and the sealing column 12 is movably sleeved in the output pipeline 212 to form a sealing cavity communicated with the gas pipeline. It can be understood that during the grinding process, the sealing column 12 is slidably arranged inside the output pipeline 212 similar to a piston to ensure the sealing of the compressed gas, so as to ensure the accurate control of the air pressure of the compressed gas in the gas pipeline.

[0049] In addition, the cooperation between the output pipeline 212 and the sealing column 12 can also play a guiding role for the grinding head 1 to slide on the driving end 21, so as to avoid deviation of the position of the grinding head 1 during the grinding process, so as to further ensure the uniformity of grinding at each position of the front fork 100.

[0050] Furthermore, a slide rail is provided on the side wall of one of the receiving groove 211 and the base 11, and the length direction of the slide rail is the same as the sliding direction of the grinding head 1; a slide groove adapted to the slide rail is provided on the side wall of the other of the receiving groove 211 and the base 11. It can be understood that the stability of the grinding head 1 during the movement can be ensured by the cooperation of the slide groove and the slide rail.

[0051] One slide rail and one slide slot form a set of sliding structures, and at least two sets of sliding structures are evenly arranged between the receiving slot 211 and the base 11. In this embodiment, the number of sliding structures is preferably two, and they are distributed on two opposite sides of the base.

[0052] In addition, the shape of the slide rail is preferably a "匸" shape. The "匸"-shaped slide rail can increase the contact area between the slide rail and the slide groove, thereby further ensuring the stability of the grinding head 1 during movement.

[0053] Furthermore, a plurality of guide posts are arranged between the base 11 and the receiving groove 211, and the length direction of the plurality of guide posts is the same as the sliding direction of the grinding head 1, wherein the number of guide posts is preferably four, and under the joint action of the guide posts, the output pipe 212 and the sealing post 12, the slide rail and the slide groove, the connection strength between the grinding head 1 and the driving end 21 can be ensured, so that the grinding device is suitable for grinding requirements of different strengths. Preferably, there are four guide posts, and the four guide posts are respectively located at the four corners of the base 11.

[0054] In this embodiment, an oblong hole 13 is provided on the side wall of one of the receiving groove 211 and the base 11, and the length direction of the oblong hole 13 is the same as the sliding direction of the grinding head 1; a limiting column 213 is provided on the side wall of the other of the receiving groove 211 and the base 11, and the limiting column 213 can cooperate with the oblong hole 13 to limit the movement stroke of the grinding head 1. It can be understood that under the cooperation of the oblong hole 13 and the limiting column 213, the movement stroke of the grinding head 1 can be limited, so as to prevent the grinding head 1 from exceeding the preset stroke during the grinding process, thereby improving the safety performance.

[0055] Preferably, there are two slide rails and two sliding grooves. The two slide rails are respectively located on the opposite side walls of the base 11 and are respectively slidably connected to the corresponding sliding grooves. Each slide rail is provided with an oblong hole 13. The limiting posts 213 are arranged on the side walls of the receiving groove 211. Wherein, the number of the limiting posts 213 can be two or four. When the number of the limiting posts 213 is two, the two limiting posts 213 are respectively arranged on the two side walls of the receiving groove 211, and the two limiting posts 213 are respectively located at both ends of the moving stroke of the grinding head 1. When the number of the limiting posts 213 is four, two limiting posts 213 form a set of limiting structures. The two sets of limiting structures are respectively arranged on the two side walls of the receiving groove 211, and in any limiting structure, the two limiting posts 213 are respectively located at both ends of the moving stroke of the grinding head 1.

[0056] In this embodiment, the grinding head 1 includes a pneumatic motor 15, a grinding seat 16 and a sponge. The pneumatic motor 15 is arranged inside the base 11 and has a rotating shaft that rotates around its own axis; the grinding seat 16 is arranged on the rotating shaft and is located outside the base 11; the sponge is fixedly arranged on the grinding seat 16 and can abut against the front fork 100. It can be understood that during the grinding process, the pneumatic motor 15 can drive the grinding seat 16 to rotate, so as to drive the sponge to rotate. The sponge can grind the front fork 100. Under the action of the driving mechanism 2, the grinding head 1 can be driven to move along different curved surfaces of the front fork 100 to complete the grinding of different curved surfaces. Among them, the driving mechanism 2 is preferably a multi-axis robot in the prior art. Selecting a sponge as the grinding material to grind the front fork 100 has good flexibility and can well fit various curved surfaces and irregular shapes on the front fork 100 to achieve uniform grinding.

[0057] In addition, please refer to Figure 4 , the grinding device further includes a clamping mechanism 4 and a rotating mechanism 5. The clamping mechanism 4 is used to clamp the front fork 100; the rotating mechanism 5 has a rotating end for connecting with the clamping mechanism 4, and the rotating mechanism 5 is used to control the front fork 100 to rotate a preset angle. It can be understood that under the action of the rotating mechanism 5, the front fork 100 can be controlled to rotate a preset angle, so as to ensure the grinding of each surface of the front fork 100. After the front fork 100 rotates multiple times, 360° rotation can be achieved, so as to ensure the comprehensiveness of grinding. Among them, the preset angle for the rotating mechanism 5 to control the rotation of the front fork 100 is 45°. After 8 rotations, 360° rotation can be achieved. In some other feasible embodiments, the preset angle can also be 30°, 40° or 60°, etc., which are not specifically limited here.

[0058] Among them, the clamping mechanism 4 is preferably a three-jaw chuck, which can clamp the upper tube 110 of the front fork 100. The rotating mechanism 5 is preferably a hollow rotary motor, which has a hollow rotor as the rotating end, and the hollow rotor is coaxially arranged with the upper tube 110 clamped by the three-jaw chuck, so as to avoid deviation of the front fork 100 during rotation and further ensure the uniformity of grinding at various positions of the front fork 100.

[0059] Furthermore, one clamping mechanism 4 and one rotating mechanism 5 form a set of clamping components, and the grinding device is provided with at least two sets of clamping components; the grinding device further includes a carrier 6 and a base 7. The carrier 6 is divided into a grinding area and a loading / unloading area, and the driving mechanism 2 is arranged in the grinding area; the base 7 is rotatably arranged on the carrier 6, and all the clamping components are arranged on the base 7, and each clamping component can sequentially move from the loading / unloading area to the grinding area. It can be understood that the operator installs the front fork 100 on the clamping mechanism 4 in the loading / unloading area, and then rotates the base 7 through a rotating structure such as a rotating motor to transfer the front fork 100 to the grinding area. Under the action of the driving mechanism 2 and the grinding head 1, the front fork 100 can be ground. After grinding, the base 7 is rotated continuously to rotate the front fork 100 to the loading / unloading area to complete unloading. The whole process can reduce the time of loading and unloading, thereby improving the grinding efficiency.

[0060] Furthermore, a baffle 8 is arranged between each clamping component, and the baffle 8 is fixed on the base 7. It can be understood that debris will be generated during the grinding process, and the baffle 8 can block the debris in the grinding area, thereby ensuring the cleanliness of the loading / unloading area.

[0061] In addition, the shape of the base 7 is preferably long strip-shaped, the rotating motor is connected to the middle of the base 7, and when the front fork 100 is installed on the clamping mechanism 4, it can extend to the outside of the base 7, so as to avoid debris falling onto the base 7 and further ensure the cleanliness of the loading / unloading area.

[0062] In this embodiment, please refer to Figure 5 , the grinding device further includes a lifting mechanism 9, which is arranged on the carrier 6 and is in the loading / unloading area. The lifting mechanism 9 is used to apply a lifting force to the front fork 100 to be clamped by the clamping mechanism 4, so that the clamping mechanism 4 can clamp the front fork 100 stably. It can be understood that when installing the front fork 100 in the loading / unloading area, the lifting mechanism 9 can apply a lifting force to the front fork 100, so that the front fork 100 can be in a stable state during installation, so as to avoid the phenomenon of unstable installation caused by uneven weight distribution or irregular shape of the front fork 100 itself, and can ensure the consistency of different front forks 100 when being clamped, which further helps to ensure the consistency of different front forks 100 during the grinding process.

[0063] Exemplarily, the lifting mechanism 9 includes a lifting cylinder 91 and a lifting rod 92. The lifting cylinder 91 is disposed on the stage 6, and the lifting rod 92 is horizontally disposed at the end of the piston rod of the lifting cylinder 91. The lifting cylinder 91 is used to lift the lifting rod 92 to a preset height. It can be understood that under the action of the lifting cylinder 91, the lifting rod 92 can be moved to the preset height to abut against the two lower tubes 120 of the front fork 100, so that the front fork 100 can be stably installed on the clamping mechanism 4, and the consistency of different front forks 100 during installation can also be ensured.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A grinding device for grinding a front fork (100), characterized in that, include: A grinding head (1), used for grinding the front fork (100); A driving mechanism (2) having a driving end (21) capable of moving with multiple degrees of freedom, the grinding head (1) being slidably disposed on the driving end (21), and the driving mechanism (2) being used to drive the grinding head (1) to move along different curved surfaces of the front fork (100); An adjustment mechanism is connected to the grinding head (1) and is used to apply a force to the grinding head (1) toward the front fork (100), so that the actual grinding force applied by the grinding head (1) to the front fork (100) is maintained at a preset value.

2. The grinding device according to claim 1, wherein, The driving end (21) is provided with a receiving groove (211), and the grinding head (1) comprises a base (11) adapted to slide with the receiving groove (211); The adjustment mechanism comprises an air source, an air pipeline and a pressure regulating valve; the air source can deliver compressed gas between the containing groove (211) and the base (11) through the air pipeline to apply a force to the grinding head (1); the pressure regulating valve is arranged on the air pipeline to keep the pressure between the containing groove (211) and the base (11) at a preset pressure value.

3. The grinding device according to claim 2, characterized in that, An output pipe (212) connected to the gas pipeline is vertically arranged at the bottom of the containing tank (211), and the output pipe (212) is arranged in a columnar shape; A sealing column (12) adapted to the sealing pipe is vertically arranged on the top of the base (11), and the sealing column (12) is movably sleeved in the output pipe (212) to form a sealing cavity connected to the gas pipeline.

4. The grinding device according to claim 2, characterized in that, An oblong hole (13) is provided on the side wall of one of the accommodating groove (211) and the base (11), and the length direction of the oblong hole (13) is the same as the sliding direction of the grinding head (1); A limiting column (213) is provided on the other side wall of the accommodating groove (211) and the base (11), and the limiting column (213) can cooperate with the oblong hole (13) to limit the movement stroke of the grinding head (1).

5. The grinding device according to claim 2, wherein A slide rail is provided on the side wall of one of the accommodating groove (211) and the base (11), and the length direction of the slide rail is the same as the sliding direction of the grinding head (1); A slide groove adapted to the slide rail is provided on the other side wall of the accommodating groove (211) and the base (11).

6. The grinding device according to claim 5, wherein, One of the slide rails and one of the slide grooves forms a set of sliding structures, and at least two sets of sliding structures are evenly arranged between the accommodating groove (211) and the base (11).

7. The grinding device according to claim 6, characterized in that, The shape of the slide rail is preferably "匸"-shaped.

8. The grinding device according to claim 2, wherein A plurality of guide columns are arranged between the base (11) and the receiving groove (211), and the length direction of the plurality of guide columns is the same as the sliding direction of the grinding head (1).

9. The grinding device according to claim 8, characterized in that, Four guide columns are provided.

10. The grinding device according to claim 2, characterized in that, The base (11) is square.

Images