An inner wall profiling constant force grinding and polishing equipment based on eccentric mechanism of curved arm movement

Abstract

The application relates to the technical field of pipe polishing equipment, and discloses an inner wall profiling constant force polishing and grinding equipment based on an eccentric mechanism of a curved arm motion, which comprises a workbench, a first movable platform, a second movable platform, a motor assembly for generating power, a transmission assembly comprising a first gear, a transmission shaft and a rotating platform, an adjusting assembly comprising a connecting rod, a connecting rod shaft and a cylinder, a polishing assembly installed on the second movable platform and used for polishing the inner wall of a bent pipe, a bent pipe clamping device used for clamping the bent pipe, and a control system used for receiving and outputting control signals. The inner wall of the elbow can be polished, the contact force between the polished workpiece and the polishing assembly can be actively adjusted during the polishing and grinding process, the constant force control can guarantee the consistency and uniformity of the polishing effect, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe polishing equipment, and particularly relates to an inner wall profiling constant force polishing and grinding equipment based on a cam motion eccentric mechanism. BACKGROUND

[0002] At present, the polishers of most pipe inner wall polishing machines are generally connected with polishing heads and power output machines through straight rods, and the polishing heads are driven by the power output machines to penetrate into the interiors of pipes to be processed to polish the inner walls of the pipes. When the processing objects are elbow pipes, the interior space of the elbow pipes is narrow, and it is difficult to send the polishing tools to all surfaces that need to be processed. Due to the irregular shape of the elbow pipes, it is difficult to apply uniform polishing and polishing force to all areas, and the conditions of excessive polishing or insufficient polishing are prone to occur.

[0003] Therefore, the present application needs to be improved. SUMMARY

[0004] The present application solves the technical problem in the prior art, and provides an inner wall profiling constant force polishing and grinding equipment based on a cam motion eccentric mechanism to solve the problems in the background art.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: an inner wall profiling constant force grinding and polishing equipment based on a crank arm motion eccentric mechanism, comprising: a workbench for mounting mechanical components; a first movable platform mounted on the workbench, the first movable platform comprising at least one pair of first optical axis assemblies mounted on the workbench and a first movable plate mounted on the first optical axis assemblies, the first movable plate being movable along the first optical axis assemblies in the Y direction; a second movable platform mounted on the first movable platform, the second movable platform comprising a second optical axis assembly mounted on the first movable plate and a second movable plate mounted on the second optical axis assembly, the second movable plate being movable along the second optical axis assembly in the X direction; a motor assembly mounted on the lower part of the workbench, the motor assembly driving power generation; a transmission assembly comprising a first gear in transmission connection with the motor assembly, a transmission shaft connected with the first gear, and a rotating platform connected with the other end of the transmission shaft; an adjustment assembly provided on the rotating platform, the adjustment assembly comprising a connecting rod hinged on the rotating platform, a connecting rod shaft provided on the other end of the connecting rod, and a gas cylinder mounted on the rotating platform and having a telescopic end connected with the connecting rod shaft; wherein the connecting rod shaft is connected with the second movable plate; a polishing assembly mounted on the second movable platform, the polishing assembly being used for polishing the inner wall of the elbow pipe; an elbow pipe clamping device for clamping the elbow pipe; and a control system for receiving and outputting control signals.

[0006] Further, the first optical axis assembly comprises a first optical axis support fixed on the workbench, a first optical axis mounted on the first optical axis support, and a first sliding block sleeved on the first optical axis, the first sliding block being connected with the first movable plate.

[0007] Further, the second optical axis assembly comprises a second optical axis support fixed on the first movable plate, a second optical axis mounted on the second optical axis support, and a second sliding block sleeved on the second optical axis, the second sliding block being connected with the second movable plate.

[0008] Further, the motor assembly comprises a first motor, a speed reducer connected with the output end of the first motor, and a second gear connected with the speed reducer, the second gear being in meshing transmission with the first gear.

[0009] Further, the polishing assembly comprises a second motor, a flexible shaft connected with the output end of the second motor, a connecting pipe through which the flexible shaft passes, and a polishing head connected with the flexible shaft; the second motor drives the flexible shaft to rotate the polishing head to polish the inner wall of the pipe.

[0010] Further, the pipe bending clamping device comprises a third motor, a third movable plate arranged on the third motor, a first fixed block arranged on the third movable plate and a second fixed block arranged opposite to the first fixed block, and the first fixed block and the second fixed block are movable and adjustable to fix the pipe.

[0011] Further, the control system comprises a servo driver electrically connected with the first motor, a programmable controller electrically connected with the servo driver and a proportional valve connected with the cylinder and the programmable controller.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. The contact force between the polishing assembly and the pipe workpiece can be adjusted by driving the polishing assembly to move through the cylinder in the adjusting assembly, and the contact point is kept in the normal direction of the inner wall of the pipe, so that the constant force can be applied to the inner wall of the pipe workpiece, and the consistency and uniformity of the polishing effect can be ensured under the polishing of the constant force, thereby improving the product quality.

[0014] 2. Under the synergistic action of the first movable platform, the second movable platform, the motor assembly and the transmission assembly, the transmission assembly is driven by the motor assembly, and under the synergistic action of the first movable platform and the second movable platform, the transmission assembly drives the polishing device to rotate in a circle to uniformly polish the inner wall of the pipe workpiece.

[0015] 3. In combination with the pipe bending clamping device, the pipe bending clamping device is used to rotate the pipe one by one during processing, so that the polishing assembly can completely polish other positions of the inner wall of the pipe, and the one-time complete polishing can avoid excessive polishing and inconsistent texture at the joint, thereby improving the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application.

[0017] Figure 2 is a partial structural schematic diagram of the structure of the present application.

[0018] Figure 3 is another angle structural schematic diagram of Figure 2 .

[0019] Figure 4 is a structural schematic diagram of the first movable platform.

[0020] Figure 5 is a structural schematic diagram of the first movable platform.

[0021] Figure 6is a structural schematic diagram of the second movable platform.

[0022] Figure 7 is a structural schematic diagram of the second movable platform.

[0023] Figure 8 is a structural schematic diagram of the motor assembly, transmission assembly and adjustment assembly.

[0024] Figure 9 is a structural schematic diagram of the transmission assembly.

[0025] Figure 10 is a structural schematic diagram of the adjustment assembly.

[0026] Figure 11 is a structural schematic diagram of the motor assembly.

[0027] Figure 12 is a structural schematic diagram of the polishing assembly.

[0028] Figure 13 is a structural schematic diagram of the pipe bending clamping device.

[0029] Figure 14 is a structural schematic diagram of the control system.

[0030] Reference signs: 1, workbench; 2, first movable platform; 3, first optical axis assembly; 4, first movable plate; 5, second movable platform; 6, second optical axis assembly; 7, second movable plate; 8, motor assembly; 9, transmission assembly; 10, first gear; 11, transmission shaft; 12, rotating platform; 13, adjustment assembly; 14, connecting rod; 15, connecting rod shaft; 16, air cylinder; 17, polishing assembly; 18, pipe bending clamping device; 19, control system; 20, first optical axis support; 21, first optical axis; 22, first sliding block; 23, second optical axis support; 24, second optical axis; 25, second sliding block; 26, first motor; 27, speed reducer; 28, second gear; 29, second motor; 30, flexible shaft; 31, connecting pipe fitting; 32, polishing head; 33, third motor; 34, third movable plate; 35, first fixed block; 36, second fixed block; 37, servo driver; 38, programmable controller; 39, proportional valve. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings.

[0032] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not understood to be limiting of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings and are merely used for convenience of description and do not indicate or imply that a device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed or implied as limiting the present application. In addition, the terms "first", "second", are used only for the purpose of description and cannot be construed or implied as indicating or implying relative importance or indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the "upper", "above" and "above" of the first feature to the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] As Figures 1-10As shown, an inner wall profiling constant force grinding and polishing equipment based on a crank arm movement eccentric mechanism is provided, comprising: a workbench 1 for mounting mechanical parts; a first movable platform 2 mounted on the workbench 1, the first movable platform 2 comprising at least a pair of first optical axis assemblies 3 mounted on the workbench 1 and a first movable plate 4 mounted on the first optical axis assemblies 3, the first movable plate 4 being movable along the first optical axis assemblies 3 in the Y direction; a second movable platform 5 mounted on the first movable platform 2, the second movable platform 5 comprising a second optical axis assembly 6 mounted on the first movable plate 4 and a second movable plate 7 mounted on the second optical axis assembly 6, the second movable plate 7 being movable along the second optical axis assembly 6 in the X direction; a motor assembly 8 mounted on the lower part of the workbench 1, the motor assembly 8 driving power generation; a transmission assembly 9 comprising a first gear 10 in transmission connection with the motor assembly 8, a transmission shaft 11 connected with the first gear 10 and a rotating platform 12 connected with the other end of the transmission shaft 11; an adjustment assembly 13 provided on the rotating platform 12, the adjustment assembly 13 comprising a connecting rod 14 hinged on the rotating platform 12, a connecting rod shaft 15 provided on the other end of the connecting rod 14 and a gas cylinder 16 mounted on the rotating platform 12 and having a telescopic end connected with the connecting rod shaft 15; wherein the connecting rod shaft 15 is connected with the second movable plate 7; a polishing assembly 17 mounted on the second movable platform 5, the polishing assembly 17 being used for polishing the inner wall of the elbow pipe; an elbow pipe clamping device 18 used for clamping the elbow pipe; and a control system 19 used for receiving and outputting control signals.

[0034] In view of the technical problems described in the background art, an inner wall profiling constant force grinding and polishing equipment based on a crank arm movement eccentric mechanism is proposed.

[0035] Reference Figures 4-7 In the above technical solution, the first movable platform 2 can adopt a pair of first optical axis assemblies 3 and a first movable plate 4, the first movable plate 4 being designed with an opening at the middle position for facilitating the installation of the transmission assembly 9 and other components, the pair of optical axis assemblies being arranged in parallel, and the first movable plate 4 being movable in the Y direction relative to the first optical axis assemblies 3.

[0036] The second movable platform 5 can adopt a pair of second optical axis assemblies 6 and a second movable plate 7, the second optical axis assemblies 6 being arranged in parallel, and the second movable plate 7 being movable in the X direction relative to the second optical axis assemblies 6.

[0037] The motor assembly 8 is used as a power output to drive the mechanical components to move. The motor assembly 8 transmits power to the transmission assembly 9. In the implementation, the transmission assembly 9 includes a first gear 10, a transmission shaft 11 and a rotating platform 12, the first gear 10 is engaged with the motor assembly 8 to drive, the transmission shaft is used to transmit power, and the rotating platform 12 is connected to the other end of the transmission shaft, so that the rotating platform 12 is driven to rotate in a circle.

[0038] Reference Figure 10 In order to realize the constant force control on the pipe, the adjusting assembly 13 is arranged on the rotating platform 12, and the adjusting assembly 13 is used to adjust the distance between the polishing assembly 17 and the inner wall of the pipe, so as to control the contact force between the polishing head 32 and the inner wall of the pipe. Specifically, the adjusting assembly 13 includes a cylinder 16, a connecting rod 14 and a connecting rod shaft 15, one end of the connecting rod 14 is hinged to the rotating platform 12, the cylinder 16 is installed on the rotating platform 12, an included angle is formed between the cylinder 16 and the connecting rod 14, and the extension end of the cylinder 16 and the connecting rod 14 are connected to the connecting rod shaft 15, and the connecting rod shaft 15 is connected to the second movable plate 7. Since the polishing assembly 17 is installed on the second movable plate 7, when the cylinder 16 drives the connecting rod shaft 15 to move, the connecting rod shaft 15 drives the second movable plate 7 to move, and since the polishing assembly 17 is installed on the second movable plate 7, the contact force between the polishing head 32 of the polishing assembly 17 and the inner wall of the pipe is controlled. Since the contact force is constant, the consistency and uniformity of the polishing effect can be ensured under the constant polishing, and the product quality is improved.

[0039] The pipe clamping device 18 is in the form of a separate device, and the pipe clamping device 18 is used to clamp and fix the pipe.

[0040] In actual use, the pipe to be polished is installed on the pipe clamping device 18, the control system 19 drives the adjusting assembly 13 to work according to the planned contact force, the cylinder 16 is extended to drive the second movable plate 7 to move, and the polishing assembly 17 on the second movable plate 7 is driven, so that the polishing head 32 of the polishing assembly 17 is in contact with the inner wall of the pipe to provide a constant contact force. The motor assembly 8 is driven to drive the rotating platform 12 of the transmission assembly 9 to rotate, since the connecting rod shaft 15 after being extended is eccentrically arranged with the rotating platform 12, the connecting rod shaft 15 and the second movable plate 7 are connected, and the first movable plate 2 and the second movable plate 5 move in the X direction and the Y direction, so that the polishing head 32 of the polishing assembly 17 is operated to polish the inner wall of the pipe in a circle.

[0041] Meanwhile, when the polishing head 32 is worn, the push rod is automatically pushed out to compensate for the wear, thereby ensuring uniform polishing. If the actual contact force is less than the planned contact force, the cylinder 16 automatically pushes out the belt to maintain the planned contact force; if the actual contact force is greater than the planned contact force, the cylinder 16 is automatically retracted by the reaction force to maintain the planned contact force. While the device rotates, the workpiece rotates around the center of the workpiece center axis, thereby realizing a complete inner wall polishing process.

[0042] The constant force polishing control of the polishing contact force is realized by controlling the pushing force of the push rod of the cylinder 16.

[0043] As shown in Figures 4-7 The first optical axis assembly 3 comprises a first optical axis support 20 fixed on the workbench 1, a first optical axis 21 installed on the first optical axis support 20, and a first sliding block 22 sleeved on the first optical axis 21, and the first sliding block 22 is connected with the first movable plate 4.

[0044] The second optical axis assembly 6 comprises a second optical axis support 23 fixed on the first movable plate 4, a second optical axis 24 installed on the second optical axis support 23, and a second sliding block 25 sleeved on the second optical axis 24, and the second sliding block 25 is connected with the second movable plate 7.

[0045] Preferably, under the rotation of the rotating platform 12, the polishing head 32 of the polishing assembly 17 needs to be driven to rotate, thereby realizing polishing of the inner wall of the pipe. For this purpose, the first movable plate 4 moves in the X direction and the second movable plate 7 moves in the Y direction, forming a first movable platform 2 and a second movable platform 5 that cooperatively rotate.

[0046] As shown in Figure 11 The motor assembly 8 comprises a first motor 26, a speed reducer 27 connected with the output end of the first motor 26, and a second gear 28 connected with the speed reducer 27, and the second gear 28 is in meshing transmission with the first gear 10.

[0047] In implementation, the motor assembly 8 comprises a first motor 26, a speed reducer 27, and a second gear 28. The first motor 26 can adopt a servo motor, a stepping motor, etc. Preferably, the first motor 26 adopts a servo motor. The output end of the first motor 26 is provided with the speed reducer 27 for adjusting the torque. The second gear 28 is connected with the speed reducer 27, and the second gear 28 is in meshing transmission with the first gear 10. When the first motor 26 is driven, the first gear 10 is driven to rotate.

[0048] Referring to Figure 12As shown, the polishing assembly 17 comprises a second motor 29, a flexible shaft 30 connected to the output end of the second motor 29, a connecting pipe 31 through which the flexible shaft 30 passes, and a polishing head 32 connected to the flexible shaft 30; the second motor 29 drives the flexible shaft 30 to drive the polishing head 32 to rotate to polish the inner wall of the pipe.

[0049] The polishing assembly 17 is used to polish the inner wall of the pipe. The polishing assembly 17 comprises a second motor 29, a flexible shaft 30, a connecting pipe 31, and a polishing head 32. The polishing head 32 is used to install a polishing wheel or a polishing wheel. The connecting pipe 31 is installed on the second movable plate 7. The second motor 29 is installed on the second movable plate 7. The connecting pipe 31 is also provided on the second movable plate 7 and is located in front of the output end of the second motor 29. The connecting pipe 31 has a hollow structure and can be adapted to 1-3 different sizes of pipes. For pipes that do not match, different bending radius connecting pipes 31 can be replaced to meet the polishing needs of pipes of different sizes. The output end of the second motor 29 is connected to the flexible shaft 30. The flexible shaft 30 passes through the connecting pipe 31, and the polishing head 32 is installed on the flexible shaft 30. In use, after the second motor 29 is driven, the polishing head 32 is driven to rotate for polishing.

[0050] As shown in the Figure 13 polishing assembly 17, the pipe bending clamping device 18 comprises a third motor 33, a third movable plate 34 provided on the third motor 33, a first fixed block 35 installed on the third movable plate 34, and a second fixed block 36 provided opposite to the first fixed block 35. The first fixed block 35 and the second fixed block 36 can be movably adjusted to fix the pipe. The third motor 33 drives the third movable plate 34 to rotate to drive the pipe to rotate for polishing the inner wall.

[0051] To realize complete and continuous polishing of the pipe and avoid inconsistent direction of the lines and incoherent lines, the structure of the pipe bending clamping device 18 is designed. It specifically comprises a third motor 33, a third movable plate 34, a first fixed block 35, and a second fixed block 36. The first fixed block 35 and the second fixed block 36 are mainly used for clamping the pipe. The number of the first fixed block 35 and the second fixed block 36 can be selected according to the implementation, which is not limited. The first fixed block 35 and the second fixed block 36 are in an adjustable form on the third movable plate 34, so as to meet the processing of pipes of different sizes. The output end of the third motor 33 is connected to the third movable plate 34. Under the action of the control system 19, the rotation of the third motor 33 is driven to drive the third movable plate 34 to rotate. Thus, the polishing head 32 continuously polishes the inner wall of the pipe, which can realize consistency and uniformity of the polishing effect, improve product quality, and complete the polishing of the inner wall of the pipe at one time without excessive polishing at the splicing position and inconsistent texture.

[0052] Reference Figure 14 As shown, the control system 19 includes a servo driver 37 electrically connected with the first motor 26, a programmable controller 38 electrically connected with the servo driver 37, and a proportional valve 39 connected with the cylinder 16 and the programmable controller 38.

[0053] In use, the control system 19 includes the servo driver 37, the programmable controller 38, and the proportional valve 39. The output pressure of the proportional valve 39 is controlled by the programmable controller 38, and the pressure is transmitted to the polishing head 32 at the end of the device through the cylinder 16 push rod. Even if the polishing head 32 is worn, the cylinder 16 push rod will automatically push out to compensate for the wear, thereby ensuring uniform polishing. At the same time, the first motor 26 is driven to rotate, and the polishing head 32 will make a circular motion to polish the inner wall of the pipe.

[0054] The above is not any limitation on the technical scope of the present application, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. An inner wall contouring constant force grinding and polishing device based on an eccentric mechanism with a curved arm motion, characterized in that, include: A workbench, used for mounting mechanical parts; A first movable platform is mounted on the workbench. The first movable platform includes at least one pair of first optical axis assemblies mounted on the workbench and a first movable plate mounted on the first optical axis assemblies. The first movable plate is movable along the Y direction of the first optical axis assemblies. A second movable platform is installed on the first movable platform. The second movable platform includes a second optical axis assembly installed on the first movable platform and a second movable plate installed on the second optical axis assembly. The second movable plate is movable along the X direction of the second optical axis assembly. A motor assembly is installed on the lower part of the worktable and is driven to generate power; A transmission assembly, the transmission assembly including a first gear that is drive-connected to the motor assembly, a transmission shaft connected to the first gear, and a rotating platform connected to the other end of the transmission shaft; An adjustment assembly is disposed on the rotating platform. The adjustment assembly includes a connecting rod hinged to the rotating platform, a connecting rod shaft disposed at the other end of the connecting rod, and a cylinder mounted on the rotating platform with its telescopic end connected to the connecting rod shaft; wherein the connecting rod shaft is connected to a second movable plate. A grinding assembly is mounted on the second movable platform and is used to grind the inner wall of the bent pipe. A pipe clamping device, the pipe clamping device being used to clamp a pipe; A control system for receiving and outputting control signals.

2. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to claim 1, characterized in that: The first optical axis assembly includes a first optical axis bracket fixed on the worktable, a first optical axis mounted on the first optical axis bracket, and a first slider sleeved on the first optical axis, the first slider being connected to the first movable plate.

3. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to claim 2, characterized in that: The second optical axis assembly includes a second optical axis bracket fixed to the first movable plate, a second optical axis mounted on the second optical axis bracket, and a second slider sleeved on the second optical axis, the second slider being connected to the second movable plate.

4. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to any one of claims 1-3, characterized in that: The motor assembly includes a first motor, a speed reducer connected to the output end of the first motor, and a second gear connected to the speed reducer, wherein the second gear meshes with the first gear for transmission.

5. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to claim 4, characterized in that: The grinding assembly includes a second motor, a flexible shaft connected to the output end of the second motor, a connecting pipe through which the flexible shaft passes, and a grinding head connected to the flexible shaft; the second motor drives the flexible shaft to rotate the grinding head to grind the inner wall of the pipe.

6. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to claim 5, characterized in that: The pipe bending clamping device includes a third motor, a third movable plate disposed on the third motor, a first fixed block mounted on the third movable plate, and a second fixed block disposed opposite to the first fixed block. The first fixed block and the second fixed block are movable and adjustable to fix the pipe fitting. The third motor drives the third movable plate to rotate, thereby rotating the pipe to polish the inner wall.

7. The inner wall contouring constant force grinding and polishing device based on the eccentric mechanism of the curved arm motion according to claim 5, characterized in that: The control system includes a servo driver electrically connected to the first motor, a programmable controller electrically connected to the servo driver, and a proportional valve connected to the cylinder and the programmable controller.

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