Grinding machine with high safety

Abstract

The high-safety grinding machine comprises a box body, a partition plate is fixedly connected to the inner wall of the upper portion of the box body, a driving motor is arranged below the partition plate, a motor shaft is arranged at the upper end of the driving motor in an extending mode, and an end face bearing and a grinding wheel are connected to the motor shaft in a sleeving mode; the lower portion of the end face bearing is fixedly connected to the partition plate, the upper portion of the end face bearing is connected with the grinding wheel, clamps are arranged at the upper end of the partition plate, an even number of clamps are arranged around the grinding wheel at equal angles, a convex ring is arranged on the upper end face of the grinding wheel, and a cover plate is rotationally connected to one side of the upper end of the box body. An opening is formed in the middle of the cover plate, the protruding ring extends out of the opening, and a protective cover is rotationally connected to the side wall of the upper portion of the box body. The grinding wheel is horizontally mounted, meanwhile, the cover plate and the protective cover are arranged, and the operation safety is improved under the condition that the functional integrity of the grinding wheel is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machines, and in particular to a grinding machine with high safety. Background Art

[0002] The grinding machine is a common device used to sharpen various knives and tools, and is also used for grinding, deburring and cleaning ordinary small parts. It is mainly composed of a base, a grinding wheel, a motor or other power source, a bracket, a protective cover and a water supply. The grinding wheel in the grinding machine is fixedly connected to the motor shaft extending from both ends of the motor, and a protective cover is set on the outside of the grinding wheel.

[0003] Although common grinding machines have simple structures and high practicality, they are not very safe. This is mainly because the protection level of the grinding machine is not high, and the grinding wheel itself is made by sintering. The force is too large during installation, or the radial force is unbalanced during operation, which makes it easy for the grinding wheel to break. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a high-safety grinding machine, including a box body, a partition is fixedly connected to the upper inner wall of the box body, a driving motor is arranged below the partition, a motor shaft is extended from the upper end of the driving motor, an end face bearing and a grinding wheel are sleeved on the motor shaft, the lower part of the end face bearing is fixedly connected to the partition, the upper part of the end face bearing receives the grinding wheel, a clamp is arranged at the upper end of the partition, and an even number of clamps are arranged around the grinding wheel at equal angles. The grinding wheel is installed horizontally so that the radial gravity is changed to the axial direction, and the clamp is used to clamp the tool, and an even number of clamps are arranged. When the tool is sharpened, an even number of tools are sharpened at the same time to ensure that the radial force of the grinding wheel is balanced, the grinding wheel can rotate stably, and the safety of the operation is improved.

[0005] The upper end surface of the grinding wheel is provided with a convex ring, one side of the upper end of the box body is rotatably connected with a cover plate, and an opening is provided in the middle of the cover plate, and the convex ring extends from the opening, and the upper side wall of the box body is rotatably connected with a protective cover. The protective cover and the cover plate are provided to improve the safety of the operation, and the convex ring is provided so that the workpiece can be hand-held for flexible grinding.

[0006] Preferably, the side wall of the motor shaft is provided with a plurality of axial grooves, and the upper part of the end face bearing is provided with a plurality of convex teeth, and the convex teeth and the grooves cooperate, that is, when the motor shaft rotates, the upper part of the end face bearing is driven to rotate, and then the grinding wheel placed thereon also rotates.

[0007] Preferably, the upper side wall of the motor shaft is provided with a thread, and is matched with a fixing sleeve, the fixing sleeve includes a clamping section and a conical section, and the conical surface of the conical section abuts against the middle through hole of the grinding wheel. The fixing sleeve is used to fix the grinding wheel, and the structure of the conical section can realize the fixing of grinding wheels with different inner diameters, and it is also easy to control the matching clearance.

[0008] Preferably, a crossbeam is fixedly connected inside the box, and the upper end of the drive motor is fixedly connected to the crossbeam. A flange is arranged on the upper part of the drive motor, and bolts are inserted on the flange, and the bolts are threadedly connected to the crossbeam.

[0009] Preferably, a control box is provided on the upper side wall of the box body for controlling the grinding machine.

[0010] Preferably, the fixture comprises a fixing seat, one end of which is extended with a telescopic sleeve, one end of which is fixedly connected with a fan-shaped plate, and the edge of the fan-shaped plate is provided with a scale, the fan-shaped plate is rotatably connected with a fixing frame, and a fixing bolt is threadedly engaged with one side of the middle part of the fixing frame. That is, the tool is placed in the fixing frame, and then the fixing bolt is rotated to press against the tool to fix it.

[0011] Preferably, a spring is arranged inside the telescopic sleeve, and one end of the spring abuts against the inner wall of the fixing seat. Under the action of the spring, the telescopic sleeve can be driven to move toward the grinding wheel, that is, the blade of the tool contacts the grinding wheel, and the grinding is achieved under the rotation of the grinding wheel.

[0012] Preferably, an adjusting arm is fixedly connected to one side of the fixing frame, an arc-shaped long hole is opened on the edge of the sector plate, and a threaded tube is inserted in the long hole, the lower part of the threaded tube supports the sector plate, the upper part of the threaded tube passes through the end of the adjusting arm, and the upper thread of the threaded tube is matched with a threaded sleeve. When grinding the tool, there are requirements for the angle of the blade, and the adjusting arm is provided here, which can make the fixing frame rotate, thereby changing the angle between the tool and the grinding wheel. After the angle is finally determined, the threaded sleeve is rotated to clamp and fix the adjusting arm in cooperation with the threaded tube.

[0013] Preferably, a limit rod is inserted in the middle of the threaded tube, and the lower end of the limit rod is matched with a through hole preset on the upper end surface of the fixing seat. When the clamp is used, the tool is fixed on the fixing frame in advance, and then the limit rod is pulled out, and the telescopic sleeve can be extended from the fixing seat under the action of the spring.

[0014] The beneficial effects of the present invention are as follows: 1. Install the grinding wheel horizontally, and set the clamps to an even number when grinding radially, so that the grinding wheel can achieve dynamic balance during operation and improve the safety of the operation.

[0015] 2. The cover plate and protective cover are set to greatly improve the safety of the grinding machine operation.

[0016] 3. The structure of the grinding wheel has been changed, and a convex ring has been added, so that the workpiece can be flexibly ground by hand when the cover is closed, which ensures the integrity of the grinding machine function while ensuring safety.

[0017] 4. Equipped with end bearing and fixed sleeve, the grinding wheel can be installed quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 is a three-dimensional schematic diagram of the present invention without a cover plate; Figure 3 It is an exploded schematic diagram of the transmission structure of the present invention; Figure 4 An exploded schematic diagram of the clamp of the present invention; Figure 5 It is a schematic diagram of the end bearing of the present invention; Figure 6 It is a three-dimensional schematic diagram of the fixing sleeve of the present invention.

[0019] List of reference numerals: 1. Box; 2. Control box; 3. Cover plate; 4. Grinding wheel; 5. Protective cover; 6. Partition plate; 7. Clamp; 8. Drive motor; 9. Crossbeam; 10. Motor shaft; 11. Slot; 12. End bearing; 13. Fixed sleeve; 41. convex ring; 71. fixed seat; 72. spring; 73. telescopic sleeve; 74. fan-shaped plate; 75. adjusting arm; 76. fixed frame; 77. fixing bolt; 78. limiting rod; 79. threaded sleeve; 710. threaded tube; 121. convex teeth; 131. conical surface section; 132. clamping section. DETAILED DESCRIPTION

[0020] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Combination Figure 1 , Figure 2 and Figure 3As shown, a high-safety grinding machine includes a box body 1, which is a rectangular parallelepiped structure, and has support feet fixedly connected to the four corners of the lower part. A partition 6 is fixedly connected to the upper inner wall of the box body 1, and a driving motor 8 is arranged below the partition 6. A motor shaft 10 is extended from the upper end of the driving motor 8, and an end face bearing 12 and a grinding wheel 4 are sleeved on the motor shaft 10. The lower part of the end face bearing 12 is fixedly connected to the partition 6, and the upper part of the end face bearing 12 receives the grinding wheel 4, that is, the grinding wheel 4 is placed on the upper part of the end face bearing 12. At this time, the grinding wheel 4 The axis is in a vertical state, and the gravity on the grinding wheel 4 is no longer in the radial direction. During the flat laying process, the radial force of the grinding wheel 4 is balanced, reducing the axial force of the motor shaft 10. A clamp 7 is provided at the upper end of the partition 6 for clamping and fixing the tool for sharpening the tool. An even number of clamps 7 are arranged at equal angles around the grinding wheel 4. The purpose of setting an even number is to grind an even number of large tools at the same time, so that the radial force of the grinding wheel 4 is balanced. During the rotation of the grinding wheel 4, the dynamic balance is maintained as much as possible, thereby improving the safety of the operation.

[0022] A convex ring 41 is provided on the upper end face of the grinding wheel 4, and the workpiece can be held and ground on the end face or circumferential surface of the convex ring 41, which has the advantage of flexible use. A cover plate 3 is rotatably connected to one side of the upper end of the box body 1, and a handle is provided on one side of the cover plate 3 for rotating and opening the cover plate 3. At this time, the clamp 7 of the cover plate 3 is exposed, and the tool can be clamped for grinding. An opening is provided in the middle of the cover plate 3, and the convex ring 41 extends from the opening. When the workpiece is held and ground at the convex ring 41, the cover plate 3 needs to be covered on the upper end of the grinding wheel 4, thereby improving the safety of the operation. A protective cover 5 is rotatably connected to the upper side wall of the box body 1. During the grinding process of the tool, since it can be fully automated, it is necessary to cover the protective cover 5 to further improve the operating safety of the device.

[0023] Combination Figure 3 and Figure 5 As shown, the side wall of the motor shaft 10 is provided with a plurality of axial grooves 11, and the upper part of the end bearing 12 is provided with a plurality of convex teeth 121, and the convex teeth 121 cooperate with the grooves 11, that is, under this cooperation mode, the drive motor 8 is started, the motor shaft 10 rotates, thereby driving the upper part of the end bearing 12 to rotate, and the grinding wheel 4 placed on the upper part of the end bearing 12 also rotates accordingly.

[0024] Combination Figure 3 and Figure 6 As shown, the upper side wall of the motor shaft 10 is provided with a thread, and is matched with a fixing sleeve 13, the fixing sleeve 13 includes a clamping section 132 and a conical section 131, the conical surface of the conical section 131 abuts against the middle through hole of the grinding wheel 4, that is, the fixing sleeve 13 is rotated, and the conical surface of the conical section 131 abuts against the grinding wheel 4. In this fixing method, no matter how large the hole diameter in the middle of the grinding wheel 4 is, under the action of the fixing sleeve 13, it can be ensured that the grinding wheel 4 and the motor shaft 10 are coaxial.

[0025] like Figure 3 As shown, a cross beam 9 is fixedly connected to the interior of the box body 1. Specifically, two cross beams 9 are provided, and the ends of the cross beams 9 are fixedly connected to the inner wall of the box body 1. The upper end of the drive motor 8 is fixedly connected to the cross beam 9. Specifically, the cross beam 9 is located between the partition 6 and the drive motor 8, and a flange is provided at the upper end of the drive motor 8, and bolts are inserted on the flange, and the bolts and the cross beam 9 are threadedly connected to achieve the fixation of the drive motor 8.

[0026] like Figure 1 As shown, a control box 2 is disposed on the upper side wall of the box body 1. The control box 2 is used for controlling the grinding machine and has related control buttons disposed thereon. The circuit part will not be described in detail here.

[0027] like Figure 4 As shown, the clamp 7 includes a fixed seat 71, which is a rectangular structure, and the side walls of the fixed seat 71 are provided with side ears, and the side ears are provided with openings. The fixed seat 71 is threadedly connected to the partition 6 through the opening using bolts, etc., and a telescopic sleeve 73 is extended at one end of the fixed seat 71, that is, the interior of the fixed seat 71 is a hollow structure, and one end of the telescopic sleeve 73 is fixedly connected to a fan-shaped plate 74, and the side profile of the fan-shaped plate 74 is L-shaped, and the lower part of the fan-shaped plate 74 is fixedly connected to the end of the telescopic rod 73, and the upper part of the fan-shaped plate 74 is located at the upper part of the telescopic sleeve 73, and the edge of the fan-shaped plate 74 is provided with a scale, which is an angle indication scale, and a fixed frame 76 is rotatably connected to the fan-shaped plate 74, and a fixing bolt 77 is threadedly matched on one side of the middle part of the fixing frame 76, and the tool is placed in the fixed frame 76, and the fixing bolt 77 is rotated, and the end of the fixing bolt 77 is against the tool to fix the tool.

[0028] A spring 72 is arranged inside the telescopic sleeve 73, and one end of the spring 72 abuts against the inner wall of the fixed seat 71. The telescopic sleeve 73 is hollow for the spring 72, so that the fixed seat 71 and the telescopic sleeve 73 form a telescopic structure, and the axial dimension of the telescopic structure is as small as possible while the telescopic sleeve 73 is extended as long as possible.

[0029] An adjusting arm 75 is fixedly connected to one side of the fixed frame 76. Rotating the adjusting arm 75 can control the angle of the tool relative to the grinding wheel 4. An arc-shaped long hole is opened at the edge of the sector plate 74, and a threaded tube 710 is inserted in the long hole. The lower part of the threaded tube 710 supports the sector plate 74, that is, the lower end of the threaded tube 710 is fixedly connected with a flange-like structure, and the flange structure supports the sector plate 74. The upper part of the threaded tube 710 passes through the end of the adjusting arm 75, and the upper thread of the threaded tube 710 is matched with a threaded sleeve 79. Tighten the threaded sleeve 79 and cooperate with the threaded tube 710 to clamp and fix the adjusting arm 75 and the sector plate 74, that is, the tool is fixed relative to the grinding wheel 4, and when the grinding wheel 4 rotates, the specified angle grinding is obtained.

[0030] A limit rod 78 is inserted in the middle of the threaded tube 710, and the lower end of the limit rod 78 is engaged in a preset through hole on the upper end surface of the fixing seat 71. After the tool is clamped and fixed, the limit rod 78 is pulled out upward to disengage from the fixing seat 71. At this time, the spring 72 is not restricted, and the tool is pushed against the grinding wheel 4.

[0031] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A high-safety grinding machine, characterized in that: The invention comprises a box body (1), wherein a partition (6) is fixedly connected to the inner wall of the upper part of the box body (1), a driving motor (8) is arranged below the partition (6), a motor shaft (10) is extended from the upper end of the driving motor (8), an end face bearing (12) and a grinding wheel (4) are sleeved on the motor shaft (10), the lower part of the end face bearing (12) is fixedly connected to the partition (6), the upper part of the end face bearing (12) receives the grinding wheel (4), a clamp (7) is arranged at the upper end of the partition (6), and an even number of clamps (7) are arranged at equal angles around the grinding wheel (4); The upper end surface of the grinding wheel (4) is provided with a convex ring (41), one side of the upper end of the box body (1) is rotatably connected to a cover plate (3), and an opening is provided in the middle of the cover plate (3), and the convex ring (41) extends from the opening, and the upper side wall of the box body (1) is rotatably connected to a protective cover (5).

2. A high-safety grinding machine according to claim 1, characterized in that: The side wall of the motor shaft (10) is provided with a plurality of axial grooves (11), and the upper part of the end face bearing (12) is provided with a plurality of convex teeth (121), and the convex teeth (121) and the grooves (11) are matched.

3. A high-safety grinding machine according to claim 1, characterized in that: The upper side wall of the motor shaft (10) is provided with a thread and is matched with a fixing sleeve (13), the fixing sleeve (13) comprising a clamping section (132) and a conical surface section (131), the conical surface of the conical surface section (131) being against the middle through hole of the grinding wheel (4).

4. A high-safety grinding machine according to claim 1, characterized in that: A crossbeam (9) is fixedly connected to the interior of the box body (1), and the upper end of the drive motor (8) is fixedly connected to the crossbeam (9).

5. A high-safety grinding machine according to claim 1, characterized in that: A control box (2) is provided on the upper side wall of the box body (1).

6. A high-safety grinding machine according to claim 1, characterized in that: The clamp (7) comprises a fixing seat (71), one end of which is extended to be provided with a telescopic sleeve (73), one end of which is fixedly connected to a fan-shaped plate (74), and the edge of the fan-shaped plate (74) is provided with a scale, the fan-shaped plate (74) is rotatably connected to a fixing frame (76), and a fixing bolt (77) is threadedly engaged on one side of a middle portion of the fixing frame (76).

7. A high-safety grinding machine according to claim 6, characterized in that: A spring (72) is disposed inside the telescopic sleeve (73), and one end of the spring (72) abuts against the inner wall of the fixing seat (71).

8. A high-safety grinding machine according to claim 6, characterized in that: An adjusting arm (75) is fixedly connected to one side of the fixing frame (76); an arc-shaped long hole is opened at the edge of the sector plate (74), and a threaded tube (710) is inserted into the long hole; the lower part of the threaded tube (710) supports the sector plate (74); the upper part of the threaded tube (710) passes through the end of the adjusting arm (75); and a threaded sleeve (79) is provided on the upper part of the threaded tube (710) in threaded cooperation.

9. A high-safety grinding machine according to claim 8, characterized in that: A limiting rod (78) is inserted through the middle of the threaded tube (710), and the lower end of the limiting rod (78) is engaged in a through hole preset on the upper end surface of the fixing seat (71).

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