Electric grinding machine and grinding method

Abstract

The electric grinding machine comprises a grinding module and a fixing assembly, the grinding module comprises a moving assembly, a rotating assembly and a grinding tool, the moving assembly drives the rotating assembly to move in the axis direction of a device to be ground, the rotating assembly drives the grinding tool to rotate, and the grinding tool is used for grinding the surface of the device to be ground. The fixing assembly comprises a bottom plate and a supporting plate vertically arranged on the bottom plate, and a to-be-polished device is arranged on the supporting plate. The electric grinding machine is high in grinding efficiency and wide in application range.

Description

Technical Field

[0001] The invention relates to the technical field of wire drawing equipment, and in particular to an electric grinder and a grinding method. Background Art

[0002] Wire drawing machine equipment is mainly used for drawing metal wires. In the wire drawing machine, the metal wire is fixed and stretched by the tower wheel. The tower wheel is in contact and friction with the metal wire for a long time, and its surface will be unevenly worn, and these wears will scratch the metal wire, causing the surface of the metal wire to be damaged, affecting the yield rate of the metal wire. Therefore, it is necessary to regularly grind the surface of the tower wheel to remove the wear and make its surface smooth.

[0003] The step wheel can be polished by hand-held sandpaper or by a corresponding polishing device. Hand-held sandpaper polishing takes a long time and is difficult to maintain consistency. In existing polishing devices, most of them drive the workpiece to be polished to rotate, and the polishing part itself is fixed, which makes it difficult to adjust the polishing direction of the workpiece. Summary of the invention

[0004] In view of some or all of the problems in the prior art, the present invention provides an electric grinder in a first aspect, comprising:

[0005] A polishing module, comprising:

[0006] A moving assembly, which is used to drive the rotating assembly to move along the axis direction of the device to be polished; a rotating assembly, which is used to drive the polishing tool to rotate; and

[0007] A grinding tool, used for grinding the surface of the device to be ground; and

[0008] A fixing assembly comprising:

[0009] Base plate; and

[0010] A support plate is vertically arranged on the bottom plate, and the device to be polished is arranged on the support plate.

[0011] Furthermore, the mobile component comprises:

[0012] First motor;

[0013] A lead screw connected to a drive shaft of the first motor;

[0014] A mounting plate connected to the lead screw through a threaded seat and moving along the lead screw under the drive of the first motor; and

[0015] A light-sensing limit device is arranged on the mounting plate and is used to sense whether the mounting plate exceeds the edge of the component to be polished.

[0016] Furthermore, the moving assembly is detachably mounted on the bottom plate via a base.

[0017] Furthermore, the base plate is made of metal, and the base is fixed to the base plate by magnetic adsorption.

[0018] Further, the rotating assembly is fixed on the mounting plate and comprises:

[0019] A second motor fixed to the mounting plate; and

[0020] A transmission shaft is detachably connected to the support plate.

[0021] Furthermore, the grinding tool comprises a grinding belt, a first end of which is sleeved on the rotating shaft of the second motor, and a second end of which is sleeved on the transmission shaft.

[0022] Furthermore, the grinding belt includes diamond sand of 320 to 600 mesh size.

[0023] Furthermore, the fixing assembly further comprises:

[0024] A fixed shaft, one end of which is connected to the support plate, and a central axis of the fixed shaft is parallel to the base, and the device to be polished is sleeved on the fixed shaft.

[0025] Furthermore, the fixing assembly further comprises:

[0026] The third motor, the fixed shaft is connected to the shaft of the third motor, so that the device to be polished is driven to rotate under the rotation of the third motor.

[0027] Based on the electric grinder as described above, the second aspect of the present invention provides a stepper wheel grinding method, comprising:

[0028] Sleeve the step pulley onto the fixed shaft;

[0029] Adjusting the position of the moving assembly and / or the transmission shaft so that the grinding tool contacts the surface at the edge of the step pulley;

[0030] Starting the second motor and the third motor, and determining the rotation speeds of the second motor and the third motor according to the surface roughness required by the step pulley and the surface roughness of the grinding tool;

[0031] After the specified time, the grinding tool is controlled by the first motor to move along the axis of the fixed shaft to grind the surface of other parts of the step wheel, and the optical sensing limit device is used to determine whether the step wheel is polished.

[0032] The electric grinder and the stepper wheel grinding method provided by the present invention, on the one hand, drive the sandpaper to rotate by the motor to form a grinding part, and the part to be polished also rotates synchronously, thereby improving the grinding efficiency. At the same time, the grinding part can be further driven by the motor to move forward and backward, and the grinding part is detachable as a whole, thereby facilitating the adjustment of the relative position relationship with the part to be polished, so it can be applied to the grinding of parts of different sizes, and has a wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0034] Figure 1 A schematic diagram showing the structure of an electric grinder according to an embodiment of the present invention; and

[0035] Figure 2 A schematic flow chart of a step wheel grinding method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0036] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments can be implemented without one or more specific details or with other replacement and / or additional methods, materials or components. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid blurring the inventive point of the present invention. Similarly, for the purpose of explanation, specific quantities, materials and configurations are set forth to provide a comprehensive understanding of embodiments of the present invention. However, the present invention is not limited to these specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn in correct proportions.

[0037] In this specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily all refer to the same embodiment.

[0038] It should be noted that the embodiments of the present invention describe the process steps in a specific order, but this is only for the purpose of illustrating the specific embodiment, rather than limiting the order of the steps. On the contrary, in different embodiments of the present invention, the order of the steps can be adjusted according to the adjustment of the process.

[0039] In order to improve the flexibility and application scope of the electric grinder, the present invention provides an electric grinder, which, on the one hand, drives the sandpaper to rotate through a motor to form a grinding component, and the component to be polished also rotates synchronously, thereby improving the grinding efficiency. At the same time, the grinding component can be further driven by the motor to move forward and backward, and the grinding component is detachable as a whole, thereby facilitating the adjustment of the relative position relationship with the component to be polished, so it can be applied to the grinding of components of different sizes, and has a wider applicability.

[0040] The technical solution of the present invention is further described below in conjunction with the accompanying drawings of the embodiments.

[0041] Figure 1 A schematic diagram of the structure of an electric grinder according to an embodiment of the present invention is shown. As shown in the figure, an electric grinder includes a grinding module and a fixed component. The grinding module includes a moving component 111, a rotating component 112 and a grinding tool 113, and the grinding tool contacts the surface of the device to be polished to grind the surface of the device to be polished. The rotating component 112 drives the grinding tool 113 to rotate to improve the grinding efficiency. The moving component 111 drives the rotating component 112 and the grinding tool 113 to move along the axial direction of the device to be polished, so that the size of the grinding tool 113 does not need to match the size of the device to be polished, thereby effectively improving the scope of application of the electric grinder. The fixed component is mainly used to place the device to be polished. In one embodiment of the present invention, in order to facilitate the adjustment of the relative position relationship between the grinding module and the device to be polished, the grinding module is fixed to the fixed component in a detachable manner, such as threaded connection, magnetic adsorption, etc.

[0042] like Figure 1 As shown, in one embodiment of the present invention, the fixing assembly includes a bottom plate 121 and a support plate 122, wherein the support plate 122 is fixed to a first side edge of the bottom plate 121. Figure 1 As shown, the support plate 122 is perpendicular or substantially perpendicular to the bottom plate 121.

[0043] In one embodiment of the present invention, the base plate 121 and the support plate 122 may also be integral. As mentioned above, the grinding module is detachably fixed to the base plate 121. In one embodiment of the present invention, the base plate 121 is made of a material with magnetic adsorption properties such as metal, and the grinding module is fixed to the base plate 121 through a magnetic seat. At the same time, in order to improve the overall stability of the equipment, in one embodiment of the present invention, a baffle 123 is provided on the second side of the base plate 121 opposite to the first side thereof to prevent the grinding module from moving beyond the range of the base plate 121 or tipping over during the grinding operation.

[0044] like Figure 1 As shown, in one embodiment of the present invention, a fixed shaft 124 is provided on the support plate 122, one end of the fixed shaft 124 is connected to the support plate 122, and the other end is suspended. In one embodiment of the present invention, the central axis of the fixed shaft 124 is perpendicular or substantially perpendicular to the support plate 122, that is, the central axis of the fixed shaft 124 is parallel or substantially parallel to the bottom plate 121. The device to be polished is sleeved on the fixed shaft 124. In order to improve the polishing efficiency, in one embodiment of the present invention, the fixed shaft 124 can rotate under the drive of a motor, thereby driving the device to be polished to rotate. Specifically, in one embodiment of the present invention, the first end of the fixed shaft 124 penetrates the support plate 122 and is connected to the rotating shaft of a third motor (not shown in the figure), thereby rotating under the drive of the third motor.

[0045] like Figure 1 As shown, in one embodiment of the present invention, the mobile component 111 is detachably fixed to the bottom plate 121 of the fixed component through the base 103. In one embodiment of the present invention, the base 103 includes at least one magnetic component and a platform fixed on the magnetic component, and the platform is fixed to the surface of the magnetic component by threaded connection, welding, etc., and is adsorbed on the bottom plate 121 through the magnetic component, and the mobile component 111 is arranged on the platform. When only one magnetic component is included, the magnetic component is preferably arranged at the center of the platform. If two or more magnetic components are included, the magnetic components are preferably symmetrically arranged at the edge of the platform. In one embodiment of the present invention, the surface of the platform is flush with the top of the baffle 123, or slightly higher than the top of the baffle 123. It should be understood that in some other embodiments of the present invention, the platform can also be fixed to the bottom plate 121 by other detachable methods.

[0046] In one embodiment of the present invention, the moving assembly 111 includes a first motor 1111, a lead screw 1112 and a mounting plate 1113. The lead screw 1112 is connected to the driving shaft of the first motor 1111, and the mounting plate 1113 is connected to the lead screw 1112 through a threaded seat, so that the mounting plate 1113 can move along the lead screw 1112 under the drive of the first motor 1111. As shown in the figure, the lead screw 1112 is arranged parallel to the central axis of the fixed shaft 124, and the mounting plate 1113 can move along the central axis of the device to be polished. It should be understood that in some other embodiments of the present invention, other translation mechanisms, such as gears and racks, conveyor belts, etc., can also be used. The mounting plate 1113 can be arranged on a guide rail parallel to the central axis of the fixed shaft 124, for example, through a slider, and slide along the guide rail under the drive of the motor.

[0047] In one embodiment of the present invention, in order to detect whether the entire grinding operation is completed, the grinding module also includes a light-sensing limit device, which is preferably installed on the side of the mounting plate 1113 close to the grinding tool, so as to sense whether the grinding tool exceeds the edge of the device to be polished.

[0048] like Figure 1 As shown, in one embodiment of the present invention, the rotating assembly 112 is fixed on the mounting plate 1113, and includes a second motor 1121 and a transmission shaft 1122, wherein the rotation axis of the second motor 1121 is preferably arranged toward the support plate 122, the transmission shaft 1122 is arranged parallel to the rotation axis of the second motor 1121, and one end of the transmission shaft 1122 is detachably connected to the support plate 122. Similarly, the transmission shaft 1122 can be fixed to the support plate 122, for example, by magnetic adsorption, threaded connection, or clamping.

[0049] In one embodiment of the present invention, the grinding tool adopts a grinding belt 123, the first end of the grinding belt 123 is sleeved on the rotating shaft of the second motor 1121, and the second end is sleeved on the transmission shaft 1122, so that when the second motor rotates, the grinding belt 123 will rotate with it to grind the surface of the device to be polished. In one embodiment of the present invention, the grinding belt adopts diamond sand of 320 to 600 mesh. In one embodiment of the present invention, the rotation speed of the second motor 1121 is 2000 to 3000 rpm.

[0050] Based on the electric grinder as described above, Figure 2 A schematic flow chart of a step wheel grinding method according to an embodiment of the present invention is shown. Figure 2 As shown, a stepper wheel grinding method comprises:

[0051] First, in step 201, the component to be polished is installed. The component to be polished, such as a step wheel, is sleeved on a fixed shaft;

[0052] Next, in step 202, the position of the grinding module is adjusted. The position of the moving assembly and / or the transmission shaft is adjusted so that the grinding tool contacts the surface at the edge of the device to be ground; and

[0053] Finally, in step 203, grinding begins. Start the second motor, and determine the rotation speed of the second motor and the grinding time according to the surface roughness required by the tower wheel for grinding the component and the surface roughness of the grinding tool. In addition, as mentioned above, in some embodiments of the present invention, the component to be grinded can be rotated under the drive of the third motor. Therefore, in one embodiment of the present invention, when the second motor is started, the third motor is also started synchronously, wherein the rotation speed of the third motor can also be determined according to the surface roughness required by the tower wheel, the surface roughness of the grinding tool, and the rotation speed of the grinding tool. In one embodiment of the present invention, the rotation speed of the third motor is 2000 to 6000 rpm. In one embodiment of the present invention, the rotation speed of the component to be grinded is equal to or substantially equal to the rotation speed of the grinding tool. For example, when the surface roughness requirement of the device to be polished is 0.4μm, if a 600-mesh sanding belt is used, the rotation speed of the polishing tool, that is, the second motor, can be, for example, 3000rpm, and at the same time, the third motor, that is, the device to be polished, also rotates at a speed of 3000rpm, and the polishing time is 2min. Since the size of the sanding belt is usually smaller than the width of the device to be polished, such as the tower wheel, in one embodiment of the present invention, after the polishing time is specified, it is necessary to further move the polishing tool to the unpolished area through a moving component. Specifically, the first motor controls the movement of the polishing tool along the axis of the fixed shaft to polish the surface of other parts of the device to be polished, and a light-sensing limit device is used to determine whether the device to be polished has been polished.

[0054] The electric grinder and the stepper wheel grinding method provided by the present invention, on the one hand, drive the sandpaper to rotate by the motor to form a grinding part, and the part to be polished also rotates synchronously, thereby improving the grinding efficiency. At the same time, the grinding part can be further driven by the motor to move forward and backward, and the grinding part is detachable as a whole, thereby facilitating the adjustment of the relative position relationship with the part to be polished, so it can be applied to the grinding of parts of different sizes, and has a wider applicability.

[0055] Although various embodiments of the present invention are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the attached claims and their equivalents.

Claims

1. An electric grinder, characterized in that: include: A polishing module, comprising: A moving assembly, which is configured to drive the rotating assembly to move along the axis direction of the device to be polished; A rotating assembly configured to drive the grinding tool to rotate; and A grinding tool, which is configured to grind the surface of the device to be polished; and a fixing assembly, which comprises: Base plate; and A support plate is vertically arranged on the bottom plate, and the device to be polished is arranged on the support plate.

2. The electric grinder according to claim 1, characterized in that: The mobile assembly comprises: First motor; A lead screw connected to a drive shaft of the first motor; A mounting plate connected to the lead screw through a threaded seat and moving along the lead screw under the drive of the first motor; and The optical sensing limit device is arranged on the mounting plate and is configured to sense whether the mounting plate exceeds the edge of the component to be polished.

3. The electric grinder according to claim 2, characterized in that: The moving assembly is detachably mounted on the bottom plate via a base.

4. The electric grinder according to claim 3, characterized in that: The base plate is made of metal, and the base is fixed to the base plate by magnetic adsorption.

5. The electric grinder according to claim 2, characterized in that: The rotating assembly is fixed to the mounting plate and comprises: A second motor fixed to the mounting plate; and A transmission shaft is detachably connected to the support plate.

6. The electric grinder according to claim 5, characterized in that: The grinding tool comprises a grinding belt, a first end of which is sleeved on the rotating shaft of the second motor, and a second end of which is sleeved on the transmission shaft.

7. The electric grinder according to claim 6, characterized in that: The grinding belt includes diamond grit of 320 to 600 mesh size.

8. The electric grinder according to claim 1, characterized in that: The fixing assembly further comprises: A fixed shaft, one end of which is connected to the support plate, and a central axis of the fixed shaft is parallel to the bottom plate, and the device to be polished is sleeved on the fixed shaft.

9. The electric grinder according to claim 8, characterized in that: The fixing assembly further comprises: A third motor, the fixed shaft is connected to the shaft of the third motor, and the fixed shaft is configured to drive the component to be polished to rotate under the rotation of the third motor.

10. A grinding method, characterized in that: The electric grinder according to any one of claims 1 to 9 is used, and comprises the steps of: Install the component to be polished onto the fixed component; Adjusting the position of the moving assembly and / or the transmission shaft so that the grinding tool contacts the surface at one side edge of the component to be ground; Driving the component to be polished and the polishing tool to rotate, and determining the rotation speed of the step wheel and the polishing tool according to the surface roughness required by the component to be polished and the surface roughness of the polishing tool; After the specified time, the grinding tool is controlled to move along the axis of the fixed shaft by the moving component to grind the surface of other parts of the device to be polished.

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