A micro grinding device that is easy to adjust

Abstract

The present invention relates to the technical field of grinding machine tools, and specifically to a micro-grinding device that is easy to adjust, comprising: a dust box, which is arranged to be a hollow semicircular structure, and a grinding wheel is rotatably installed at the upper opening of the dust box; a side plate is fixedly installed on the side edge of the lower surface of a workbench, and a limit plate, a driving ring and a mounting seat are arranged in sequence on the back side of the side plate; a first wedge block and a second wedge block are respectively arranged on the surfaces facing the driving ring and the limit plate; a steel wire rope is wound around the outside of the driving ring; the beneficial effect is: a steel wire rope is wound around the outside of the driving ring, the steel wire rope is connected to a handle, and the handle is slidably installed at the edge of the lower surface of the workbench. While the staff holds the workbench with one hand, they can also use their fingers to slide the handle to control the forward and reverse rotation of the driving ring, thereby realizing the positioning of the workbench or releasing the positioning of the workbench, so that the staff can adjust the inclination angle of the workbench.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machine tools, in particular to a micro-grinding device which is easy to adjust. Background Art

[0002] Grinding is a mechanical processing method to remove burrs from the surface of materials. It belongs to fine processing, with small processing volume and high precision. The grinder used for grinding is a machine tool that uses abrasive tools to grind the surface of the workpiece. Most grinders use high-speed rotating grinding wheels for grinding.

[0003] In the prior art, a grinding wheel is installed on the side of a workbench. When a worker is grinding a small-sized workpiece, the worker manually pushes the workpiece to move so that the workpiece fits the side of the grinding wheel, thereby grinding and polishing the workpiece surface.

[0004] For some workpieces with an inclined surface, the worker needs to adjust the inclination of the workbench during the grinding process. However, at present, the rotation and positioning of the workbench are mostly controlled by the loosening and tightening of bolts. When adjusting the angle of the workbench, the worker needs to stop the grinding operation, which leads to low grinding efficiency. Therefore, the present invention proposes a micro-grinding device that is easy to adjust to solve the above problem. Summary of the invention

[0005] The object of the present invention is to provide a micro-grinding device that is easy to adjust, so as to solve the problem in the above-mentioned background technology that the worker needs to stop the grinding operation when adjusting the angle of the workbench.

[0006] To achieve the above object, the present invention provides the following technical solution: a micro-grinding device that is easy to adjust, comprising:

[0007] A dust box, the dust box is arranged in a hollow semicircular structure, a grinding wheel is rotatably mounted at the upper opening of the dust box, and a workbench rotatably connected to the dust box is arranged on the outer side of the front of the grinding wheel;

[0008] A side plate, the side plate is fixedly mounted on the side edge of the lower surface of the workbench, a limit plate, a drive ring and a mounting seat are sequentially arranged on the back side of the side plate, and the mounting seat is fixedly connected to the dust box;

[0009] The limit plate is slidably connected with the mounting seat in a direction perpendicular to the surface of the mounting seat, the surfaces facing the limit plate and the side plate are respectively provided with a second rack and a first rack, the surfaces facing the drive ring and the limit plate are respectively provided with a first wedge block and a second wedge block, the drive ring is rotatably mounted on the surface of the mounting seat, and a return torsion spring is provided between the two;

[0010] A wire rope, the wire rope is wound outside the driving ring, one end of the wire rope is fixedly connected with a handle, and the handle is slidably installed at the edge of the lower surface of the workbench.

[0011] Preferably, both the second rack and the first rack are arranged in an arc shape and are meshed with each other. At least two guiding chutes are formed on the back surface of the limiting plate, and a T-shaped column fixedly connected to the surface of the mounting seat is movably inserted into the inner cavity of the guiding chute.

[0012] Preferably, a receiving groove for inserting the driving ring is formed in the middle of the back surface of the limiting plate. The first wedge-shaped block is fixedly installed at the bottom of the receiving groove. Both the first wedge-shaped block and the second wedge-shaped block are provided with a plurality of them and are distributed in an annular array. The plurality of first wedge-shaped blocks and the plurality of second wedge-shaped blocks are spaced from each other.

[0013] Preferably, a boss is fixedly connected to the surface of the mounting seat. The driving ring is rotatably installed outside the middle of the boss. A magnet block is fixedly arranged on the end face of the boss, and a metal sheet for mutually adsorbing with the magnet block is arranged at the bottom of the receiving groove.

[0014] Preferably, a reset groove is formed in the middle of the driving ring. The reset torsion spring is movably sleeved outside the boss and is located in the inner cavity of the reset groove. Both ends of the reset torsion spring are respectively fixedly connected to the mounting seat and the driving ring. A plurality of limiting chutes distributed in an annular array are formed on the back surface of the driving ring. The limiting chutes are arranged in an arc shape concentric with the driving ring. A limiting convex block corresponding to each of the plurality of limiting chutes is fixedly connected to the surface of the mounting seat, and the limiting convex block is movably inserted into the inner cavity of the limiting chute.

[0015] Preferably, a guide rail frame is fixedly connected to the lower surface of the workbench, and the guide rail frame is in a "C" shape with an upward opening. A through groove for the guide rail frame to pass through is formed on the surface of the handle. Positioning grooves are formed on the lower surface of the workbench on both sides of the handle. A ball is arranged on the upper surface of the handle, and the upper part of the ball is embedded in the inner cavity of the positioning groove.

[0016] Preferably, a receiving hole is formed on the upper surface of the handle. The ball is movably embedded in the inner cavity of the receiving hole, and the diameter of the ball is larger than the inner diameter of the opening of the receiving hole. A thrust spring is installed at the bottom of the receiving hole.

[0017] Preferably, a protective cover is arranged outside the grinding wheel, and the protective cover is fixedly connected to the dust collection box. A dust discharge pipe is fixedly communicated with the bottom of the dust collection box, and the dust discharge pipe is communicated with an external pipeline. A connecting shaft is fixedly connected to the surface of the dust collection box. The workbench is rotationally connected to the dust collection box through the connecting shaft.

[0018] Preferably, the dust collecting box is fixedly mounted on the upper surface of the base, a grinding motor is fixedly connected to the upper surface of the base, and the grinding motor drives the grinding wheel to rotate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention has a steel wire rope wound around the outer side of a driving ring, the steel wire rope is connected to a handle, the handle is slidably installed at the edge of the lower surface of the workbench, a reset torsion spring is arranged between the driving ring and the mounting seat, the worker can hold the workbench with one hand and slide the handle with his fingers, thereby controlling the forward and reverse rotation of the driving ring, at this time the driving ring can push the limit plate to approach or away from the side plate through the second wedge block, thereby realizing the positioning of the workbench or releasing the positioning of the workbench, so that the worker can adjust the inclination angle of the workbench, during this process, the worker can use his other hand to push the workpiece to always fit the grinding wheel and perform the grinding operation, thereby effectively improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of the workbench structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the explosion of the dust collecting box structure of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the limiting plate structure of the present invention;

[0025] Figure 5 It is a three-dimensional schematic diagram of the limiting plate structure of the present invention from another viewing angle;

[0026] Figure 6 It is a three-dimensional schematic diagram of the drive ring structure of the present invention;

[0027] Figure 7 It is a three-dimensional schematic diagram of the mounting seat structure of the present invention;

[0028] Figure 8 It is a three-dimensional schematic diagram of the handle structure of the present invention.

[0029] In the figure: 1. dust box; 101. protective cover; 102. dust exhaust pipe; 103. connecting shaft; 2. grinding wheel; 3. workbench; 32. positioning groove; 33. guide frame; 4. side plate; 41. first rack; 5. limit plate; 51. second rack; 52. storage groove; 53. first wedge block; 54. guide slide; 6. drive ring; 61. second wedge block; 63. limit slide; 64. reset groove; 7. wire rope; 8. handle; 81. through groove; 83. storage hole; 84. ball; 85. thrust spring; 9. mounting seat; 91. boss; 92. magnet block; 93. T-column; 94. limit convex block; 95. reset torsion spring; 10. base; 11. grinding motor. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0034] See also Figures 1 to 8 , the present invention provides a technical solution:

[0035] Embodiment 1, a micro-grinding device that is easy to adjust, includes: a dust collecting box 1, a side plate 4 and a steel wire rope 7.

[0036] Specifically, the dust box 1 is configured as a hollow semicircular structure, and a grinding wheel 2 is rotatably mounted at the upper opening of the dust box 1. Figure 1 As shown, the grinding wheel 2 can rotate to grind, grind or polish the workpiece on its front side. During the grinding process, the generated debris and dust can fall into the inner cavity of the dust collecting box 1 below for collection as the grinding wheel 2 rotates and due to its own gravity. A workbench 3 rotatably connected to the dust collecting box 1 is provided on the outer side of the front side of the grinding wheel 2. When grinding, the workpiece is placed on the surface of the workbench 3. The staff can change the grinding surface of the workpiece by pushing the workpiece to slide on the surface of the workbench 3. At the same time, the contact position between the workpiece and the grinding wheel 2 can be changed by adjusting the inclination angle of the workbench 3, thereby adapting to workpieces of different shapes and surface inclination angles.

[0037] Secondly, the side plate 4 is fixedly mounted on the side of the lower surface of the workbench 3, and the back side of the side plate 4 is sequentially provided with a limit plate 5, a drive ring 6 and a mounting seat 9, and the mounting seat 9 is fixedly connected to the dust box 1;

[0038] Furthermore, the limiting plate 5 is slidably connected with the mounting seat 9 in a direction perpendicular to the surface of the mounting seat 9, and the surfaces facing the limiting plate 5 and the side plate 4 are respectively provided with a second rack 51 and a first rack 41. When the limiting plate 5 slides and approaches the side plate 4, the second rack 51 and the first rack 41 mesh with each other, and can position the rotation of the side plate 4, and thus fix the position of the workbench 3. Conversely, after the limiting plate 5 is away from the side plate 4, the workbench 3 can rotate freely, so that the staff can adjust the inclination angle of the workbench 3. In addition, the surfaces facing the driving ring 6 and the limiting plate 5 are respectively provided with a first wedge block 53 and a second wedge block 61. The driving ring 6 is rotatably mounted on the surface of the mounting seat 9, and a reset torsion spring 95 is arranged between the two. That is to say, when the driving ring 6 rotates, the cooperation between the first wedge block 53 and the second wedge block 61 can drive the limiting plate 5 to slide in the direction close to the side plate 4.

[0039] In addition, the wire rope 7 is wound around the outside of the driving ring 6, and one end of the wire rope 7 is fixedly connected to a handle 8, which is slidably mounted on the edge of the lower surface of the workbench 3. Figure 1 and Figure 2 As shown, while the worker holds the workbench 3 with one hand, his fingers can also move the handle 8 to control the sliding of the handle 8. Figure 3 and Figure 6 As shown, when the handle 8 slides, it can control the forward rotation of the drive ring 6 by pulling the wire rope 7, thereby pushing the limit plate 5 close to the side plate 4, and after the wire rope 7 is relaxed, the drive ring 6 can automatically reverse and reset under the torque of the reset torsion spring 95, so as to separate the limit plate 5 from the side plate 4.

[0040] In order to guide the sliding of the limit plate 5, the second rack 51 and the first rack 41 of the present application are both configured to be arc-shaped and mesh with each other, such as Figure 2 and Figure 4 As shown, during the rotation of the workbench 3, as long as the limit plate 5 is close to the side plate 4, the second rack 51 and the first rack 41 can engage with each other. In addition, at least two guide grooves 54 are provided on the back side of the limit plate 5. The inner cavity of the guide groove 54 is movably inserted with a T-shaped column 93 fixedly connected to the surface of the mounting seat 9. The cooperation between the T-shaped column 93 and the guide groove 54 is used to guide the sliding of the limit plate 5, so that the limit plate 5 can only slide in the direction away from or close to the mounting seat 9. At the same time, the limit plate 5 and the mounting seat 9 will not be separated.

[0041] In order to push the limit plate 5 to slide, the present application also has a receiving groove 52 for the drive ring 6 to be inserted in the middle of the back side of the limit plate 5, and the first wedge block 53 is fixedly installed at the bottom of the receiving groove 52. The first wedge block 53 and the second wedge block 61 are both provided in plurality and distributed in a ring array, and the plurality of first wedge blocks 53 and the plurality of second wedge blocks 61 are spaced apart from each other, such as Figure 5 and Figure 6 As shown, when the driving ring 6 rotates, the second wedge block 61 squeezes the first wedge block 53 , thereby pushing the limiting plate 5 away from the driving ring 6 , that is, close to the side plate 4 .

[0042] In order to control the separation and contact of the limit plate 5 and the side plate 4 to position the side plate 4, the present application also has a boss 91 fixedly connected to the surface of the mounting seat 9. The driving ring 6 is rotatably mounted on the outer side of the middle part of the boss 91. A bearing is provided between the driving ring 6 and the boss 91 to maintain a rotational connection. The second wedge block 61 will not slide relative to the boss 91 to cause separation. A magnet block 92 is fixedly arranged on the end face of the boss 91, and a metal sheet that adsorbs with the magnet block 92 is arranged at the bottom of the receiving groove 52. When the driving ring 6 rotates reversely, the second wedge block 61 no longer presses the first wedge block 53. At this time, the suction force generated by the magnet block 92 on the limit plate 5 can drive the limit plate 5 to approach the driving ring 6, that is, the limit plate 5 moves away from the side plate 4, thereby releasing the positioning effect of the limit plate 5 on the side plate 4.

[0043] In order to reverse and reset the driving ring 6 after it rotates forward, the present application also has a reset groove 64 opened in the middle of the driving ring 6. The reset torsion spring 95 is movably sleeved on the outer side of the boss 91 and is located in the inner cavity of the reset groove 64. The two ends of the reset torsion spring 95 are respectively fixedly connected to the mounting seat 9 and the driving ring 6. The reset torsion spring 95 is provided to reset the rotation of the driving ring 6. When the staff pushes the handle 8 close to the driving ring 6, the steel wire rope 7 is no longer pulled by the handle 8, and the steel wire rope 7 becomes slack and no longer drives the driving ring 6 to rotate forward. The driving ring 6 can rotate reversely and reset under the torsion of the reset torsion spring 95. In addition, a plurality of limiting sliding grooves 63 distributed in an annular array are opened on the back surface of the driving ring 6. The limiting sliding grooves 63 are arranged in an arc shape concentric with the driving ring 6. Limiting protrusions 94 corresponding to the plurality of limiting sliding grooves 63 one by one are fixedly connected to the surface of the mounting seat 9, and the limiting protrusions 94 are movably inserted into the inner cavity of the limiting sliding grooves 63. The cooperation between the limiting protrusions 94 and the limiting sliding grooves 63 can limit the rotation of the driving ring 6, thereby preventing the second wedge block 61 and the first wedge block 53 from separating and错开 due to the over-large rotation angle of the driving ring 6.

[0044] In order to guide the sliding of the handle 8, the present application also has a guide rail frame 33 fixedly connected to the lower surface of the workbench 3, and the guide rail frame 33 is in a "C" shape with an upward opening. A through groove 81 for the guide rail frame 33 to pass through is opened on the surface of the handle 8. Therefore, the handle 8 can only slide along the length direction of the guide rail frame 33. Positioning grooves 32 are opened on the lower surface of the workbench 3 on both sides of the handle 8. A ball 84 is arranged on the upper surface of the handle 8, and the upper part of the ball 84 is embedded in the inner cavity of the positioning groove 32. When the handle 8 slides to correspond to a positioning groove 32, the ball 84 on the surface of the handle 8 can be embedded in the positioning groove 32, thereby realizing the positioning of the handle 8. Only when the staff pushes the handle 8, the ball 84 can脱离 from the inner cavity of the positioning groove 32.

[0045] In order to position the handle 8 after it slides, the present application also has a receiving hole 83 on the upper surface of the handle 8, and the ball 84 is movably embedded in the inner cavity of the receiving hole 83, and the diameter of the ball 84 is larger than the inner diameter of the opening of the receiving hole 83. A thrust spring 85 is installed at the bottom of the receiving hole 83. The thrust spring 85 provides a thrust so that the ball 84 always has a tendency to move away from the handle 8, so that it can be embedded in the inner cavity of the positioning groove 32 and prevent the handle 8 from sliding easily at this time.

[0046] In order to avoid accidental injury to the staff, the present application also has a protective cover 101 arranged on the outer side of the grinding wheel 2, and the protective cover 101 is fixedly connected to the dust box 1. The protective cover 101 is set to shield the upper side of the grinding wheel 2 to avoid the staff from accidentally touching the upper side of the grinding wheel 2 and causing injury. A dust exhaust pipe 102 is fixedly connected to the bottom of the dust box 1, and the dust exhaust pipe 102 is connected to the external pipeline to facilitate the removal of dust in the inner cavity of the dust box 1. A connecting shaft 103 is fixedly connected to the surface of the dust box 1, and the workbench 3 is rotatably connected to the dust box 1 through the connecting shaft 103. That is to say, the workbench 3 can only rotate around the connecting shaft 103 and change the inclination angle, and can avoid collision with the grinding wheel 2 during rotation.

[0047] In order to drive the grinding wheel 2 to work, the dust box 1 of the present application is fixedly installed on the upper surface of the base 10, and the upper surface of the base 10 is fixedly connected with a grinding motor 11, and the grinding motor 11 drives the grinding wheel 2 to rotate, and the grinding motor 11 provides power for the rotation of the grinding wheel 2.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro-grinding device that is easy to adjust, characterized in that: include: A dust box (1), the dust box (1) being arranged in a hollow semicircular structure, a grinding wheel (2) being rotatably mounted at an upper opening of the dust box (1), and a workbench (3) rotatably connected to the dust box (1) being arranged on the outer side of the front side of the grinding wheel (2); A side plate (4), the side plate (4) being fixedly mounted on the side edge of the lower surface of the workbench (3), a limit plate (5), a drive ring (6) and a mounting seat (9) being arranged in sequence on the back side of the side plate (4), and the mounting seat (9) being fixedly connected to the dust box (1); The limit plate (5) is slidably connected to the mounting seat (9) in a direction perpendicular to the surface of the mounting seat (9); the surfaces facing the limit plate (5) and the side plate (4) are respectively provided with a second rack (51) and a first rack (41); the surfaces facing the drive ring (6) and the limit plate (5) are respectively provided with a first wedge block (53) and a second wedge block (61); the drive ring (6) is rotatably mounted on the surface of the mounting seat (9), and a return torsion spring (95) is provided between the two; A steel wire rope (7), the steel wire rope (7) being wound around the outside of the driving ring (6), one end of the steel wire rope (7) being fixedly connected to a handle (8), the handle (8) being slidably mounted on the edge of the lower surface of the workbench (3); A receiving groove (52) for inserting the driving ring (6) is provided in the middle of the back side of the limiting plate (5), the first wedge block (53) is fixedly mounted on the bottom of the receiving groove (52), a plurality of the first wedge blocks (53) and the second wedge blocks (61) are provided and distributed in a ring array, and the plurality of first wedge blocks (53) and the plurality of second wedge blocks (61) are spaced apart from each other; A boss (91) is fixedly connected to the surface of the mounting seat (9), the drive ring (6) is rotatably mounted on the outer side of the middle portion of the boss (91), a magnet block (92) is fixedly arranged on the end surface of the boss (91), and a metal sheet that is attracted to the magnet block (92) is arranged at the bottom of the receiving groove (52); A reset groove (64) is provided in the middle of the driving ring (6); the reset torsion spring (95) is movably sleeved on the outside of the boss (91) and located in the inner cavity of the reset groove (64); the two ends of the reset torsion spring (95) are respectively fixedly connected to the mounting seat (9) and the driving ring (6); a plurality of limiting slide grooves (63) distributed in a ring array are provided on the back of the driving ring (6); the limiting slide grooves (63) are arranged in an arc shape concentric with the driving ring (6); a limiting protrusion (94) corresponding to the plurality of limiting slide grooves (63) is fixedly connected to the surface of the mounting seat (9); and the limiting protrusion (94) is movably inserted into the inner cavity of the limiting slide groove (63).

2. The micro-grinding device that is easy to adjust according to claim 1, characterized in that: The second rack (51) and the first rack (41) are both arranged in an arc shape and mesh with each other. The back of the limit plate (5) is provided with at least two guide slots (54). The inner cavity of the guide slot (54) is movably plugged with a T-shaped column (93) fixedly connected to the surface of the mounting seat (9).

3. The micro-grinding device that is easy to adjust according to claim 1, characterized in that: The lower surface of the workbench (3) is fixedly connected with a guide rail frame (33), and the guide rail frame (33) is in a "C" shape with an upward opening. A through groove (81) for the guide rail frame (33) to pass through is formed on the surface of the handle (8). Positioning grooves (32) are formed on the lower surface of the workbench (3) on both sides of the handle (8). Ball bearings (84) are arranged on the upper surface of the handle (8), and the upper parts of the ball bearings (84) are embedded in the inner cavity of the positioning grooves (32).

4. The adjustable micro-grinding device according to claim 3, characterized in that: A storage hole (83) is formed on the upper surface of the handle (8). The ball bearings (84) are movably embedded in the inner cavity of the storage hole (83), and the diameter of the ball bearings (84) is larger than the inner diameter of the opening of the storage hole (83). A thrust spring (85) is installed at the bottom of the storage hole (83).

5. The adjustable micro-grinding device according to claim 1, characterized in that: A protective cover (101) is arranged on the outer side of the grinding wheel (2), and the protective cover (101) is fixedly connected with the dust collection box (1). A dust discharge pipe (102) is fixedly communicated with the bottom of the dust collection box (1), and the dust discharge pipe (102) is communicated with an external pipeline. A connecting shaft (103) is fixedly connected to the surface of the dust collection box (1). The workbench (3) is rotatably connected with the dust collection box (1) through the connecting shaft (103).

6. The adjustable micro-grinding device according to claim 1, characterized in that: The dust collection box (1) is fixedly installed on the upper surface of the base (10). A grinding motor (11) is fixedly connected to the upper surface of the base (10), and the grinding motor (11) drives the grinding wheel (2) to rotate.

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