Automatic belt sander

Abstract

The invention relates to the technical field of abrasive belt grinding equipment, and provides an automatic abrasive belt grinding machine which comprises a grinding machine assembly, a power assembly, a clamp assembly and a rack. The grinding machine assembly and the power assembly are installed on the upper side of the machine frame, and the clamp assembly is installed on the power assembly. The clamp assembly comprises a U-shaped plate with a groove, the U-shaped plate with the groove is connected with symmetrical first clamping air cylinders, piston rods of the symmetrical first clamping air cylinders penetrate through the U-shaped plate with the groove to be connected with a circular groove plate, the U-shaped plate with the groove is connected with symmetrical second guide pipes, and second guide rods are arranged in the symmetrical second guide pipes respectively. And the symmetrical second guide rods are respectively connected with the corresponding circular groove plates. Aiming at the defects in the prior art, the automatic abrasive belt grinding machine is developed, six-surface grinding of a part can be realized, and parallel contact between a ground surface and an abrasive belt grinding part is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of abrasive belt grinding equipment, and in particular to an automated abrasive belt grinding machine. Background Art

[0002] An abrasive belt grinding machine is a device widely used in industrial processing, mainly used for surface grinding, polishing, deburring and other operations of materials such as metals, woods, plastics, etc. The processing of the material surface is achieved by the high-speed rotation of the abrasive belt.

[0003] In the prior art, for example, an abrasive belt grinding machine is invented, and the authorization announcement number is CN110216555B. It realizes that the abrasive belt can reciprocate along the length direction of the second wheel shaft during grinding, so that the wear of the abrasive belt is uniform, the utilization rate of the abrasive belt is improved, and thus the grinding cost of the workpiece is reduced.

[0004] Currently, there is still a lack of an automated abrasive belt grinding machine that can achieve six-sided grinding of parts, replace manual labor, and improve the grinding quality and efficiency.

[0005] Therefore, in view of the above problems, an automated abrasive belt grinding machine is proposed to solve the above problems. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention develops an automated abrasive belt grinding machine, which can achieve six-sided grinding of parts and ensure that the surface to be ground is in parallel contact with the grinding part of the abrasive belt.

[0007] The technical solution for the present invention to solve the technical problem is as follows: The present invention provides an automated abrasive belt grinding machine, including: a grinding machine assembly, a power assembly, a fixture assembly and a frame; the frame serves as the basic support structure of the entire grinding machine and bears other components. The grinding machine assembly and the power assembly are installed on the upper side of the frame, and the fixture assembly is installed on the power assembly; the grinding machine assembly is used to perform grinding operations, the fixture assembly is used to clamp the parts to be ground, and the power assembly drives the fixture assembly to move so that the parts contact the grinding machine assembly; the fixture assembly includes a U-shaped plate with grooves. The U-shaped plate with grooves serves as the main body structure of the fixture assembly and connects other components. The U-shaped plate with grooves is connected to symmetric first clamping cylinders. The piston rods of the symmetric first clamping cylinders respectively pass through the U-shaped plate with grooves and are connected to a circular groove plate. The U-shaped plate with grooves is connected to symmetric second guide tubes. Second guide rods are respectively arranged in the symmetric second guide tubes, and the symmetric second guide rods are respectively connected to the corresponding circular groove plates; the symmetric circular groove plates are respectively connected to first clamping circular plates through bearings, the symmetric first clamping circular plates are respectively connected to first spline shafts, the U-shaped plate with grooves is connected to symmetric spline tube shafts through bearings, the U-shaped plate with grooves is connected to symmetric mounting L-shaped rods, the symmetric spline tube shafts are respectively connected to the corresponding mounting L-shaped rods through bearings, and the symmetric first spline shafts are respectively arranged in the corresponding spline tube shafts. By using the first clamping cylinder to drive the first clamping circular plate to move, the clamping of the parts is realized. The spline tube shaft is connected by bearings for installation, so that the first clamping circular plate can rotate, and then drive the parts to rotate, realizing the grinding of different surfaces of the parts.

[0008] As an optimization, the power assembly includes a cylinder bracket, the cylinder bracket is connected to the frame, the cylinder bracket is connected to a moving cylinder, the piston rod of the moving cylinder is connected to a linear module, and the linear module is pushed by the piston rod of the moving cylinder to achieve the linear motion of the fixture assembly. The cylinder bracket is connected to symmetric first guide tubes, the linear module is connected to symmetric first guide rods, and the symmetric first guide rods are respectively arranged in the corresponding first guide tubes for guiding and stabilizing the motion of the linear module. The slider of the linear module is connected to the grooved U-shaped plate to achieve the precise movement of the fixture assembly. The linear module is connected to symmetric side plates, and the symmetric side plates are respectively provided with vertically long grooves and avoidance grooves for guiding the movement of the power round rods. The avoidance grooves include L-shaped grooves and inclined grooves, and the connection between the lower end of the L-shaped groove and the vertically long groove is in arc transition. The symmetric vertically long grooves are respectively communicated with the corresponding avoidance grooves. Symmetric spline tube shafts respectively have second spline shafts and first springs arranged therein. The symmetric second spline shafts are respectively connected to the corresponding first springs. The mounting seats of the symmetric first springs are respectively connected to the corresponding spline tube shafts. The symmetric second spline shafts are respectively connected to L-shaped mounting seats by bearings. The symmetric L-shaped mounting seats respectively pass through the corresponding mounting L-rods. The symmetric second spline shafts are respectively connected to power gears. The symmetric side plates are respectively connected to racks through rack L-plates, and the rotation motion of the fixture assembly is achieved through meshing, so that the fixture assembly rotates a certain angle each time it moves upward in the height direction, which is applicable to the machining of parts with regular polyhedral sides on the corresponding sides. The symmetric power gears respectively match the corresponding racks. The symmetric L-shaped mounting seats are respectively connected to power round rods, and the symmetric power round rods respectively match the corresponding vertically long grooves and avoidance grooves.

[0009] As an optimization, the symmetric side plates are respectively connected with L-shaped transition inclined plates and limiting round rods corresponding to the respective avoidance grooves, which are used to guide the movement of the power round rod to ensure its smooth transition between the vertical long groove and the avoidance groove. The shape of the L-shaped transition inclined plate matches the shapes of the vertical groove and the inclined groove of the L-shaped groove. The symmetric L-shaped transition inclined plates are respectively rotatably connected with limiting inclined plates. The central axes of the symmetric limiting inclined plates respectively pass through the corresponding side plates. The central axes of the symmetric limiting inclined plates are respectively connected with L-shaped shafts. The symmetric L-shaped shafts are respectively rotatably connected with the mounting posts on one side of the second springs. The mounting posts on the other side of the symmetric second springs are respectively rotatably connected with the corresponding side plates. Through the elastic action of the second springs, the swinging and resetting of the limiting inclined plates are realized, and the movement path of the power round rod is controlled. When the power round rod moves upward in the vertical long groove, it contacts the limiting inclined plate, driving the limiting inclined plate to swing, stretching the second spring until the limiting inclined plate contacts the limiting round rod. The power round rod moves along the limiting inclined plate in the L-shaped groove of the avoidance groove, and the first spring is compressed. When the power round rod moves in the vertical groove of the L-shaped groove, it contacts the L-shaped transition inclined plate, the second spring recovers, and the limiting inclined plate resets. The power gear meshes with the rack, realizing the rotation of the second spline shaft, the spline tube shaft, the first spline shaft and the first clamping round plate. When the power round rod moves in the inclined groove of the avoidance groove, the first spring extends, the power gear disengages from the rack, and the first clamping round plate drives the part to rotate 90 degrees. When the power round rod enters the vertical long groove upward again, the linear module changes direction, making the power round rod move vertically downward along the vertical long groove, crossing the area of the vertical long groove corresponding to the avoidance groove, contacting the limiting inclined plate, driving it to swing in the reverse direction, stretching the second spring in the reverse direction until the power round rod disengages from the contact with the limiting inclined plate, and the second spring recovers, and the limiting inclined plate resets.

[0010] As an optimization, the symmetric L-shaped mounting seats are respectively rotatably connected with symmetric first connecting rods. Each first connecting rod is respectively rotatably connected with a slider. The cross bars of the symmetric L-shaped mounting rods respectively pass through the corresponding sliders. The symmetric sliders are respectively rotatably connected with second connecting rods. The U-shaped plate with a groove is rotatably connected with a clamping disc. The edges of the clamping disc are respectively rotatably connected with symmetric L-shaped arms. The symmetric second connecting rods are respectively rotatably connected with the corresponding L-shaped arms. The U-shaped plate with a groove is connected with an I-shaped guiding rod. The I-shaped guiding rod passes through symmetric mounting cross plates. The symmetric L-shaped arms are respectively rotatably connected with the corresponding mounting cross plates. The symmetric mounting cross plates are respectively connected with steering engines. The output shafts of the symmetric steering engines respectively pass through the corresponding mounting cross plates and are connected with second clamping cylinders. The piston rods of the symmetric second clamping cylinders are respectively connected with second clamping round plates. The clamping action of the fixture assembly is realized through the sliders and the L-shaped arms. The second clamping cylinders and the second clamping round plates provide clamping force to ensure the stable clamping of the workpiece during the grinding process.

[0011] As an optimization, the symmetric spline tube shafts are respectively connected to rotating gears, the grooved U-shaped plate is bearing-connected to symmetric positioning gears, the symmetric positioning gears are respectively meshed with the corresponding rotating gears, a set of inferior arc ball grooves are respectively arranged on the symmetric positioning gears, the grooved U-shaped plate is connected to symmetric pin shafts, third springs and ball pins are respectively arranged in the symmetric pin shafts, the symmetric pin shafts are respectively connected to the corresponding third springs, the symmetric third springs are respectively connected to the corresponding ball pins, the symmetric ball pins respectively pass through the grooved U-shaped plate, and the hemispheres of the ball pins match the inferior arc ball grooves. Through the elastic action of the third springs, the positioning function of the positioning gears is realized, ensuring that the fixture assembly rotates in place.

[0012] As an optimization, the grinding machine assembly includes a mounting plate, the mounting plate is connected to the frame, the mounting plate is connected to a mounting frame, a cross bar of a Y-shaped plate is arranged in the mounting frame, the center shafts of symmetric contact wheels are bearing-connected to the Y-shaped plate, the mounting frame is rotatably connected to a swing arm, the center shaft of a tensioning wheel is bearing-connected to the swing arm, the mounting plate is connected to a reducer, the output shaft of the reducer is connected to the center shaft of a driving wheel, a sand belt surrounds the symmetric contact wheels, the tensioning wheel and the driving wheel, the piston rod of a tensioning cylinder is rotatably connected to the mounting frame, the tensioning cylinder is rotatably connected to the swing arm, and the position of the tensioning wheel is adjusted through the swing arm to realize the tensioning function of the sand belt.

[0013] As an optimization, the mounting frame is threadedly connected with fastening bolts corresponding to the cross bar of the Y-shaped plate to fix the Y-shaped plate and ensure the stability of the grinding machine assembly.

[0014] The effects provided in the invention content are only the effects of the embodiments, rather than all the effects of the invention. The above technical solutions have the following advantages or beneficial effects: 1. The device uses a power round rod. When it moves upward along the vertical long groove, it contacts the limit inclined plate, driving the limit inclined plate to swing, stretching the second spring until the limit inclined plate contacts the limit round rod. At this time, the limit inclined plate stops swinging, and the power round rod moves along the limit inclined plate in the L groove of the avoidance groove, compressing the first spring. The second spline shaft drives the power gear to move. When the power round rod moves in the vertical groove of the L groove, it contacts the vertical plate of the L transition inclined plate, and the L mounting seat stops moving. The second spring resumes, the limit inclined plate resets, and the power gear meshes with the rack, realizing the rotation of the part. When the power round rod moves in the inclined groove of the avoidance groove, it contacts the inclined plate of the L transition inclined plate, the first spring extends, and the power gear disengages from the rack. By controlling the length of the rack, the rotation angle of the power gear can be controlled, realizing the processing of parts with a regular polyhedron on the side. The power round rod moves vertically downward along the vertical long groove, crosses the corresponding vertical long groove area of the avoidance groove, contacts the limit inclined plate, driving it to swing in the opposite direction, stretching the second spring in the opposite direction until the power round rod disengages from the limit inclined plate. During this process, the part does not rotate, facilitating subsequent grinding.

[0015] 2. When the power round rod of the device moves along the limit inclined plate (the limit inclined plate contacts the limit round rod), the L mounting seat swings. Through corresponding rotational connections, the second clamping circular plate moves away from the part. When the power round rod moves along the vertical plate of the L transition inclined plate, the second clamping circular plate moves away from the part, without interfering with the first clamping circular plate driving the part to rotate. After the rotation ends, the hemisphere of the spherical pin matches the inferior arc spherical groove, realizing the auxiliary positioning of the first clamping circular plate, which is beneficial to maintaining the rotation angle of the first clamping circular plate. When the power round rod moves along the inclined plate of the L transition inclined plate, the second clamping circular plates move closer to each other, and the power round rod enters the vertical long groove, clamping the part again. Ensure that the next surface to be ground is parallel to the area where the sand belt grinds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the power assembly of the present invention.

[0019] Figure 3 It is a partial three-dimensional structure schematic diagram of the fixture assembly and the power assembly of the present invention.

[0020] Figure 4 For the present invention Figure 3 Partial enlarged view of A in

[0021] Figure 5 For the present inventionFigure 3 Partial enlarged view of B

[0022] Figure 6 Schematic diagram of the partial three-dimensional structure of the fixture assembly of the present invention Figure 1 。

[0023] Figure 7 Schematic diagram of the partial three-dimensional structure of the fixture assembly of the present invention Figure 2 。

[0024] Figure 8 Partial explosion schematic diagram of the present invention

[0025] Figure 9 Schematic diagram of the partial three-dimensional structure of the present invention Figure 1 。

[0026] Figure 10 Schematic diagram of the three-dimensional structure of the grinding machine assembly of the present invention

[0027] Figure 11 Schematic diagram of the partial three-dimensional structure of the present invention Figure 2 。

[0028] In the figure: 1. Power assembly, 11. Linear module, 12. First guide rod, 13. Cylinder bracket, 14. First guide tube, 15. Moving cylinder; 2. Fixture assembly, 21. First clamping cylinder, 22. Grooved U-shaped plate, 23. Round groove plate, 24. First clamping round plate, 25. First spline shaft, 26. Mounting L-shaped rod, 27. Spline tube shaft, 28. Rack L-shaped plate, 29. Second guide tube, 210. Second guide rod, 211. Limit round rod, 212. Clamping disc, 213. First connecting rod, 214. L-shaped transition inclined plate, 215. Avoidance groove, 216. Vertical long groove, 217. Rack, 218. Power gear, 219. L-shaped mounting seat, 220. Power round rod, 221. Second spline shaft, 222. Limit inclined plate, 223. Second spring, 224. Servo, 225. Second clamping cylinder, 226. Second clamping round plate, 228. Slide block, 229. Second connecting rod, 230. L-shaped arm, 231. I-shaped guide rod, 232. Mounting cross plate, 233. Rotating gear, 234. First spring, 235. Positioning gear, 236. Minor arc ball groove, 237. Pin shaft tube, 238. Third spring, 239. Ball pin, 240. Side plate; 3. Grinding machine assembly, 31. Contact wheel, 32. Y-shaped plate, 33. Sand belt, 34. Mounting bracket, 35. Tensioning wheel, 36. Swing arm, 37. Tensioning cylinder, 38. Mounting plate, 39. Driving wheel, 310. Reducer; 4. Machine frame. Detailed implementation mode

[0029] To clearly illustrate the technical features of the present solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits the description of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. 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 situations.

[0030] As Figures 1 to 11As shown in the figure, Embodiment 1: An automated abrasive belt grinding machine, comprising: a grinding machine assembly 3, a power assembly 1, a fixture assembly 2 and a frame 4; the frame 4 serves as the basic support structure of the entire grinding machine and bears other components. The grinding machine assembly 3 and the power assembly 1 are installed on the upper side of the frame 4, and the fixture assembly 2 is installed on the power assembly 1; the grinding machine assembly 3 is used to perform the grinding operation, the fixture assembly 2 is used to clamp the parts to be ground, and the power assembly 1 drives the fixture assembly 2 to move so that the parts contact the grinding machine assembly 3; the fixture assembly 2 includes a U-shaped plate 22 with grooves, and the U-shaped plate 22 with grooves serves as the main body structure of the fixture assembly and connects other components. The U-shaped plate 22 with grooves is connected to symmetric first clamping cylinders 21, and the piston rods of the symmetric first clamping cylinders 21 respectively pass through the U-shaped plate 22 with grooves and are connected to a circular groove plate 23. The U-shaped plate 22 with grooves is connected to symmetric second guide tubes 29, and symmetric second guide rods 210 are respectively arranged in the symmetric second guide tubes 29. The symmetric second guide rods 210 are respectively connected to the corresponding circular groove plates 23; the symmetric circular groove plates 23 are respectively connected to first clamping circular plates 24 through bearings, the symmetric first clamping circular plates 24 are respectively connected to first spline shafts 25, the U-shaped plate 22 with grooves is connected to symmetric spline tube shafts 27 through bearings, the U-shaped plate 22 with grooves is connected to symmetric mounting L-shaped rods 26, the symmetric spline tube shafts 27 are respectively connected to the corresponding mounting L-shaped rods 26 through bearings, and the symmetric first spline shafts 25 are respectively arranged in the corresponding spline tube shafts 27. By adopting the first clamping cylinder 21 to drive the first clamping circular plate 24 to move, the clamping of the parts is realized. The spline tube shaft 27 is connected through bearings, so that the first clamping circular plate 24 can rotate, and then drive the parts to rotate, realizing the grinding of different surfaces of the parts.

[0031] As Figures 2 - 4, as shown in FIGS. 9 and 11, the power assembly 1 includes a cylinder bracket 13. The cylinder bracket 13 is connected to the frame 4. The cylinder bracket 13 is connected to a moving cylinder 15. The piston rod of the moving cylinder 15 is connected to a linear module 11. The linear motion of the fixture assembly 2 is realized by the piston rod of the moving cylinder 15 pushing the linear module 11. The cylinder bracket 13 is connected to symmetric first guide tubes 14. The linear module 11 is connected to symmetric first guide rods 12. The symmetric first guide rods 12 are respectively arranged in the corresponding first guide tubes 14 for guiding and stabilizing the motion of the linear module 11. The slider of the linear module 11 is connected to a grooved U-shaped plate 22 to achieve the precise movement of the fixture assembly 2. The linear module 11 is connected to symmetric side plates 240. The symmetric side plates 240 are respectively provided with vertical long grooves 216 and avoidance grooves 215 for guiding the motion of power round rods 220. The avoidance groove 215 includes an L-shaped groove and an inclined groove. The connection between the lower end of the L-shaped groove and the vertical long groove 216 is in arc transition. The symmetric vertical long grooves 216 are respectively communicated with the corresponding avoidance grooves 215. Symmetric second spline shafts 221 and first springs 234 are respectively arranged in symmetric spline tube shafts 27. The symmetric second spline shafts 221 are respectively connected to the corresponding first springs 234. The mounting seats of the symmetric first springs 234 are respectively connected to the corresponding spline tube shafts 27. The symmetric second spline shafts 221 are respectively connected to L-shaped mounting seats 219 by bearings. The symmetric L-shaped mounting seats 219 respectively pass through the corresponding mounting L-shaped rods 26. The symmetric second spline shafts 221 are respectively connected to power gears 218. The symmetric side plates 240 are respectively connected to racks 217 through rack L-shaped plates 28. The rotational motion of the fixture assembly 2 is realized through meshing, so that the fixture assembly 2 rotates a certain angle each time it moves upward in the height direction, which is suitable for the machining of parts with regular multi-faceted sides on the corresponding sides. The symmetric power gears 218 respectively match the corresponding racks 217. The symmetric L-shaped mounting seats 219 are respectively connected to power round rods 220. The symmetric power round rods 220 respectively match the corresponding vertical long grooves 216 and the avoidance grooves 215.

[0032] As Figure 3 , 4As shown in FIGS. 5 and 6, the symmetric side plates 240 are respectively connected to the L-shaped transition inclined plates 214 and the limiting round rods 211 corresponding to the respective avoidance grooves 215, which are used to guide the movement of the power round rod 220 to ensure a smooth transition between the vertical long groove 216 and the avoidance groove 215. The shape of the L-shaped transition inclined plate 214 matches the shapes of the vertical groove and the inclined groove of the L-shaped groove. The symmetric L-shaped transition inclined plates 214 are respectively rotatably connected to the limiting inclined plates 222. The central axes of the symmetric limiting inclined plates 222 respectively pass through the corresponding side plates 240. The central axes of the symmetric limiting inclined plates 222 are respectively connected to the L-shaped shafts. The symmetric L-shaped shafts are respectively rotatably connected to the mounting posts on one side of the second springs 223. The mounting posts on the other side of the symmetric second springs 223 are respectively rotatably connected to the corresponding side plates 240. Through the elastic action of the second springs 223, the swinging and resetting of the limiting inclined plates 222 are realized to control the movement path of the power round rod 220. When the power round rod 220 moves upward in the vertical long groove 216, it contacts the limiting inclined plate 222, driving the limiting inclined plate 222 to swing and stretching the second spring 223 until the limiting inclined plate 222 contacts the limiting round rod 211. The power round rod 220 moves along the limiting inclined plate 222 in the L-shaped groove of the avoidance groove 215, and the first spring 234 is compressed. When the power round rod 220 moves in the vertical groove of the L-shaped groove, it contacts the L-shaped transition inclined plate 214, the second spring 223 recovers, and the limiting inclined plate 222 resets. The power gear 218 meshes with the rack 217 to realize the rotation of the second spline shaft 221, the spline tube shaft 27, the first spline shaft 25, and the first clamping round plate 24. When the power round rod 220 moves in the inclined groove of the avoidance groove 215, the first spring 234 extends, the power gear 218 disengages from the rack 217, and the first clamping round plate 24 drives the part to rotate 90 degrees. When the power round rod 220 enters the vertical long groove 216 upward again, the linear module 11 changes direction, causing the power round rod 220 to move vertically downward along the vertical long groove 216, passing over the area of the avoidance groove 215 corresponding to the vertical long groove 216, contacting the limiting inclined plate 222, driving it to swing in the opposite direction, stretching the second spring 223 in the opposite direction until the power round rod 220 disengages from the limiting inclined plate 222, and the second spring 223 recovers and the limiting inclined plate 222 resets.

[0033] As Figure 10As shown, the grinding machine assembly 3 includes a mounting plate 38. The mounting plate 38 is connected to the frame 4, and the mounting plate 38 is connected to a mounting bracket 34. A cross bar of a Y plate 32 is disposed within the mounting bracket 34. The Y plate 32 is connected by bearings to the central axes of symmetric contact wheels 31. The mounting bracket 34 is rotatably connected to a swing arm 36. The swing arm 36 is connected by bearings to the central axis of a tensioning wheel 35. The mounting plate 38 is connected to a speed reducer 310. The output shaft of the speed reducer 310 is connected to the central axis of a driving wheel 39. A sand belt 33 surrounds the symmetric contact wheels 31, the tensioning wheel 35, and the driving wheel 39. The mounting bracket 34 is rotatably connected to the piston rod of a tensioning cylinder 37. The tensioning cylinder 37 is rotatably connected to the swing arm 36. By adjusting the position of the tensioning wheel 35 through the swing arm 36, the tensioning function of the sand belt 33 is realized.

[0034] As Figure 10 shown, the mounting bracket 34 is threadedly connected with fastening bolts corresponding to the cross bar of the Y plate 32 to fix the Y plate 32 and ensure the stability of the grinding machine assembly.

[0035] The working process of this embodiment is as follows: Taking a part in the shape of a six-sided cube as an example for introduction, in the initial state, the power round rod 220 is located within the vertical long groove 216 and is below the avoidance groove 215.

[0036] Place the part between two first clamping round plates 24 so that the center of its side is approximately coincident with the center of the first clamping round plate 24. Control the first clamping cylinder 21 to extend. The first clamping cylinder 21 drives the round groove plate 23 and the first clamping round plate 24 to move. The round groove plate 23 drives the second guide rod 210 to move along the second guide tube 29. The first clamping round plate 24 drives the first spline shaft 25 to move along the spline tube shaft 27 to clamp the part with the first clamping round plate 24.

[0037] Control the extension of the moving cylinder 15 to drive the linear module 11 to move. The linear module 11 drives the first guide rod 12 to move along the first guide tube 14. The linear module 11 drives the fixture assembly 2 to move. The first clamping circular plate 24 drives the part to move, so that the part contacts the abrasive belt 33. The reducer 310 is connected to the power motor through a belt or the like. Control the rotation of the power motor, so that the reducer 310 drives the driving wheel 39 to rotate. The driving wheel 39 drives the abrasive belt 33 to move. The abrasive belt 33 drives the contact wheel 31 and the tensioning wheel 35 to rotate. The linear module 11 drives the fixture assembly 2 to move downward first, so that the part moves downward along the abrasive belt 33 to realize part grinding. Control the extension and contraction of the moving cylinder 15 to make the part disengage from the abrasive belt 33. Control the linear module 11 to drive the fixture assembly 2 to move upward. When the power circular rod 220 moves upward in the vertical long groove 216, it contacts the limiting inclined plate 222, drives the limiting inclined plate 222 to swing, and makes the second spring 223 swing and stretch until the limiting inclined plate 222 contacts the limiting circular rod 211. The power circular rod 220 moves along the limiting inclined plate 222 in the L groove of the avoidance groove 215. The power circular rod 220 drives the L mounting seat 219 to move. The L mounting seat 219 drives the second spline shaft 221 to move along the spline tube shaft 27. The second spline shaft 221 drives the power gear 218 to move. The first spring 234 is compressed. When the power circular rod 220 moves in the vertical groove of the L groove, it contacts the vertical plate of the L transition inclined plate 214. The L mounting seat 219 stops moving. The second spring 223 resumes, and the limiting inclined plate 222 resets. The power gear 218 meshes with the rack 217 to realize the rotation of the second spline shaft 221, the spline tube shaft 27, the first spline shaft 25 and the first clamping circular plate 24. When the power circular rod 220 moves in the inclined groove of the avoidance groove 215, it contacts the inclined plate of the L transition inclined plate 214. The first spring 234 extends. The power gear 218 disengages from the rack 217. The L mounting seat 219 moves in the reverse direction. The first clamping circular plate 24 drives the part to rotate 90 degrees. When the power circular rod 220 enters the vertical long groove 216 upward again, the linear module 11 changes direction, so that the power circular rod 220 moves vertically downward along the vertical long groove 216, crosses the area of the vertical long groove 216 corresponding to the avoidance groove 215, contacts the limiting inclined plate 222, drives it to swing in the reverse direction, and makes the second spring 223 swing and stretch in the reverse direction until the power circular rod 220 disengages from the limiting inclined plate 222. The second spring 223 resumes, and the limiting inclined plate 222 resets. Control the extension of the moving cylinder 15 to make the part contact the abrasive belt 33 to realize the grinding of the next surface of the part. Repeat this process to realize the grinding of four surfaces.

[0038] Embodiment 2: This embodiment is further elaborated on the basis of Embodiment 1. For example Figure 3 、 5As shown in FIGS. 6 and 7, the symmetric L mounting seats 219 are respectively rotatably connected to the symmetric first link rods 213. Each first link rod 213 is respectively rotatably connected to a slider 228. The cross bars of the symmetric mounting L rods 26 respectively pass through the corresponding sliders 228. The symmetric sliders 228 are respectively rotatably connected to second link rods 229. The U-shaped plate 22 with a groove is rotatably connected to a clamping disc 212. The edges of the clamping disc 212 are rotatably connected to symmetric L arms 230. The symmetric second link rods 229 are respectively rotatably connected to the corresponding L arms 230. The U-shaped plate 22 with a groove is connected to an I-shaped guide rod 231. The I-shaped guide rod 231 passes through symmetric mounting cross plates 232. The symmetric L arms 230 are respectively rotatably connected to the corresponding mounting cross plates 232. The symmetric mounting cross plates 232 are respectively connected to servo motors 224. The output shafts of the symmetric servo motors 224 respectively pass through the corresponding mounting cross plates 232 to be connected to second clamping cylinders 225. The piston rods of the symmetric second clamping cylinders 225 are respectively connected to second clamping circular plates 226. The clamping action of the fixture assembly is realized through the sliders 228 and the L arms 230. The second clamping cylinders 225 and the second clamping circular plates 226 provide clamping force to ensure stable clamping of the workpiece during the grinding process.

[0039] The working process of this embodiment is as follows: Place the part between the two first clamping circular plates 24, control the second clamping cylinder 225 to extend, so that the second clamping circular plate 226 clamps the part in the height direction, and then control the first clamping cylinder 21 to extend to clamp the part with the first clamping circular plate 24.

[0040] After the limiting inclined plate 222 contacts the limiting round rod 211, when the power round rod 220 moves along the limiting inclined plate 222, the L mounting seat 219 drives the first link rod 213 to swing. The first link rod 213 drives the slider 228 to move along the mounting L rod 26. The slider 228 drives the second link rod 229 to swing. The second link rod 229 drives the L arm 230 to swing. The L arm 230 drives the clamping disc 212 to rotate. The L arm 230 drives the mounting cross plate 232, the servo motor 224, the second clamping cylinder 225 and the second clamping circular plate 226 to move, so that the second clamping circular plate 226 moves away from the part. It does not prevent the first clamping circular plate 24 from driving the part to rotate. When the power round rod 220 contacts the inclined plate of the L transition inclined plate 214, the second clamping circular plate 226 moves in the reverse direction. The power round rod 220 enters the vertical long groove 216, and the second clamping circular plate 226 clamps the part again.

[0041] After the grinding of the four surfaces of the part is completed, control the first clamping cylinder 24 to contract, control the servo motor 224 to rotate 90 degrees, and control the first clamping cylinder 24 to extend to realize the clamping of the part. Grind the remaining two surfaces.

[0042] Embodiment 3: This embodiment is further elaborated on the basis of Embodiment 1 or 2. For exampleFigure 8 As shown, the symmetric spline tube shafts 27 are respectively connected to the rotating gears 233. The grooved U-shaped plate 22 is connected to the symmetric positioning gears 235 by bearings. The symmetric positioning gears 235 are respectively meshed with the corresponding rotating gears 233. A set of inferior arc ball grooves 236 are respectively arranged on the symmetric positioning gears 235. The grooved U-shaped plate 22 is connected to the symmetric pin shafts 237. A third spring 238 and a ball pin 239 are respectively arranged in the symmetric pin shafts 237. The symmetric pin shafts 237 are respectively connected to the corresponding third springs 238. The symmetric third springs 238 are respectively connected to the corresponding ball pins 239. The symmetric ball pins 239 respectively pass through the grooved U-shaped plate 22. The hemispheres of the ball pins 239 match the inferior arc ball grooves 236. Through the elastic action of the third spring 238, the positioning function of the positioning gear 235 is realized, ensuring that the fixture assembly 2 rotates in place.

[0043] The working process of this embodiment is as follows: When the spline tube shaft 27 rotates, it drives the rotating gear 233 to rotate. The rotating gear 233 drives the positioning gear 235 to rotate, so that the arc surface of the inferior arc ball groove 236 squeezes the ball pin 239, causing it to move along the pin shaft 237 and squeeze the third spring 238. When the ball pin 239 contacts the tooth surface of the positioning gear 235, the ball pin 239 stops moving. When the spline tube shaft 27 rotates 90 degrees, the ball pin 239 matches the next inferior arc ball groove 236, the third spring 238 resumes, and the ball pin 239 enters the next inferior arc ball groove 236, ensuring that the spline tube shaft 27 rotates accurately by 90 degrees.

[0044] When the power round rod 220 of this device moves upward along the vertical long groove 216, it contacts the limit inclined plate 222, driving the limit inclined plate 222 to swing, stretching the second spring 223 until the limit inclined plate 222 contacts the limit round rod 211. At this time, the limit inclined plate 222 stops swinging, and the power round rod 220 moves along the limit inclined plate 222 in the L groove of the avoidance groove 215, causing the first spring 234 to be compressed. The second spline shaft 221 drives the power gear 218 to move. When the power round rod 220 moves in the vertical groove of the L groove, it contacts the vertical plate of the L transition inclined plate 214, and the L mounting seat 219 stops moving. The second spring 223 resumes, the limit inclined plate 222 resets, and the power gear 218 meshes with the rack 217, realizing the rotation of the part. When the power round rod 220 moves in the inclined groove of the avoidance groove 215, it contacts the inclined plate of the L transition inclined plate 214, and the first spring 234 extends, causing the power gear 218 to disengage from the rack 217. By controlling the length of the rack 217, the rotation angle of the power gear 218 can be controlled, realizing the processing of parts with a regular polyhedron on the side. The power round rod 220 moves vertically downward along the vertical long groove 216, crosses the area of the vertical long groove 216 corresponding to the avoidance groove 215, contacts the limit inclined plate 222, driving it to swing in the opposite direction, stretching the second spring 223 in the opposite direction until the power round rod 220 disengages from the limit inclined plate 222. During this process, the part does not rotate, facilitating subsequent grinding.

[0045] When the power round rod 220 of this device moves along the limit inclined plate 222 (the limit inclined plate 222 contacts the limit round rod 211), the L mounting seat 219 swings. Through the corresponding rotational connection, the second clamping circular plate 226 moves away from the part. When the power round rod 220 moves along the vertical plate of the L transition inclined plate 214, the second clamping circular plate 226 moves away from the part, without interfering with the first clamping circular plate 24 driving the part to rotate. After the rotation ends, the hemisphere of the spherical ball pin 239 matches the inferior arc ball groove 236, realizing the auxiliary positioning of the first clamping circular plate 24, which is beneficial to maintaining the rotation angle of the first clamping circular plate 24. When the power round rod 220 moves along the inclined plate of the L transition inclined plate 214, the second clamping circular plates 226 approach each other. The power round rod 220 enters the vertical long groove 216 and clamps the part again. Ensure that the next surface to be ground is parallel to the grinding part of the abrasive belt 33.

[0046] Although the specific embodiments of the invention have been described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the invention. Based on the technical solutions of the invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the invention.

Claims

1. An automatic abrasive belt grinding machine, characterized by comprising: a grinding machine assembly (3), a power assembly (1), a fixture assembly (2) and a frame (4); the grinding machine assembly (3) and the power assembly (1) are installed on the upper side of the frame (4), and the fixture assembly (2) is installed on the power assembly (1); the fixture assembly (2) includes a grooved U-shaped plate (22), the grooved U-shaped plate (22) is connected to symmetric first clamping cylinders (21), and the piston rods of the symmetric first clamping cylinders (21) respectively pass through the grooved U-shaped plate (22) and are connected to a round grooved plate (23); the symmetric round grooved plates (23) are respectively connected to first clamping circular plates (24) by bearings, the symmetric first clamping circular plates (24) are respectively connected to first spline shafts (25), the grooved U-shaped plate (22) is connected to symmetric spline pipe shafts (27) by bearings, the grooved U-shaped plate (22) is connected to symmetric mounting L-shaped rods (26), the symmetric spline pipe shafts (27) are respectively connected to the corresponding mounting L-shaped rods (26) by bearings, and the symmetric first spline shafts (25) are respectively arranged in the corresponding spline pipe shafts (27).

2. The automated abrasive belt grinding machine according to claim 1, characterized in that: the power assembly (1) includes a cylinder bracket (13), the cylinder bracket (13) is connected to the frame (4), the cylinder bracket (13) is connected to a moving cylinder (15), the piston rod of the moving cylinder (15) is connected to a linear module (11), the slider of the linear module (11) is connected to the grooved U-shaped plate (22), the linear module (11) is connected to symmetric side plates (240), the symmetric side plates (240) are respectively provided with vertical long grooves (216) and avoidance grooves (215), the symmetric vertical long grooves (216) are respectively communicated with the corresponding avoidance grooves (215), second spline shafts (221) and first springs (234) are respectively arranged in the symmetric spline pipe shafts (27), the symmetric second spline shafts (221) are respectively connected to the corresponding first springs (234), the mounting seats of the symmetric first springs (234) are respectively connected to the corresponding spline pipe shafts (27), the symmetric second spline shafts (221) are respectively connected to L-shaped mounting seats (219) by bearings, the symmetric L-shaped mounting seats (219) respectively pass through the corresponding mounting L-shaped rods (26), the symmetric second spline shafts (221) are respectively connected to power gears (218), the symmetric side plates (240) are respectively connected to racks (217) through rack L-shaped plates (28), the symmetric power gears (218) respectively match the corresponding racks (217), the symmetric L-shaped mounting seats (219) are respectively connected to power round rods (220), and the symmetric power round rods (220) respectively match the corresponding vertical long grooves (216) and the avoidance grooves (215).

3. The automated abrasive belt grinding machine according to claim 2, characterized in that: The symmetrical side plates (240) are respectively connected to the L transition inclined plates (214) and the limiting round rods (211) corresponding to the corresponding avoidance grooves (215); the symmetrical L transition inclined plates (214) are respectively rotatably connected to the limiting inclined plates (222); the central axes of the symmetrical limiting inclined plates (222) respectively pass through the corresponding side plates (240); the central axes of the symmetrical limiting inclined plates (222) are respectively connected to the L axes; the symmetrical L axes are respectively rotatably connected to the mounting columns on one side of the second spring (223); and the mounting columns on the other side of the symmetrical second spring (223) are respectively rotatably connected to the corresponding side plates (240).

4. An automatic abrasive belt grinding machine according to claim 2, characterized in that: The symmetrical L mounting seats (219) are respectively rotatably connected to the symmetrical first connecting rods (213), each of the first connecting rods (213) is respectively rotatably connected to the slider (228), the cross bars of the symmetrical mounting L rods (26) respectively pass through the corresponding sliders (228), the symmetrical sliders (228) are respectively rotatably connected to the second connecting rods (229), the grooved U plate (22) is rotatably connected to the clamping disk (212), the edge of the clamping disk (212) is rotatably connected to the symmetrical L arms (230), and the symmetrical second connecting rods (229) are respectively rotatably connected to the corresponding L The L-shaped arms (230) are connected to the I-shaped guide rod (231), the I-shaped guide rod (231) passes through the symmetrical mounting transverse plates (232), the symmetrical L-shaped arms (230) are respectively rotatably connected to the corresponding mounting transverse plates (232), the symmetrical mounting transverse plates (232) are respectively connected to the steering gears (224), the output shafts of the symmetrical steering gears (224) respectively pass through the corresponding mounting transverse plates (232) to connect to the second clamping cylinders (225), and the piston rods of the symmetrical second clamping cylinders (225) are respectively connected to the second clamping circular plates (226).

5. An automated abrasive belt grinding machine according to claim 1, characterized in that: The grinding machine assembly (3) includes a mounting plate (38), the mounting plate (38) is connected to the frame (4), the mounting plate (38) is connected to the mounting frame (34), a cross bar of a Y plate (32) is provided in the mounting frame (34), the Y plate (32) is connected to the central axis of the symmetrical contact wheel (31) by a bearing, the mounting frame (34) is rotatably connected to the swing arm (36), the swing arm (36) is connected to the central axis of the tension wheel (35) by a bearing, the mounting plate (38) is connected to the reducer (310), the output shaft of the reducer (310) is connected to the central axis of the drive wheel (39), and the sanding belt (33) surrounds the symmetrical contact wheel (31), the tension wheel (35) and the drive wheel (39).

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