Auxiliary device of handheld grinding machine
By designing an auxiliary device, the connecting frame and rollers are used to maintain the relative position of the handheld grinder and the workpiece, the problem of inconsistent shape of the handheld grinder when polishing the edges is solved, and high-quality processing effect is achieved.
Patent Information
- Application Number
- CN202421398733.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-18
AI Technical Summary
When a hand-held grinder grinder grinding edges with a longer length, it is difficult to maintain the angles of the grinding wheel and the workpiece, resulting in inconsistent grinding shapes.
An auxiliary device is designed, including a connecting frame, a first roller, a second roller and a connecting assembly, and by fixing a hand-held grinder to the connecting frame and contacting the workpiece surface with the first roller and the second roller, the relative position of the grinding wheel and the workpiece is maintained.
It effectively solves the problem of inconsistent shapes when polishing edges by hand-held grinding wheels, ensures that the contact position and angle between the grinding wheel and the workpiece are always consistent, and improves the processing quality.
Smart Images
Figure CN222661162U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding machines, in particular to an auxiliary device of a handheld grinding machine. Background Art
[0002] A handheld grinder is a small electric mechanical tool, mainly used for grinding and trimming hard materials. It processes the workpiece through a high-speed rotating grinding wheel. The handheld grinder uses an electric motor to drive the grinding wheel to rotate at high speed. The abrasive grains on the grinding wheel contact the surface of the workpiece and grind through physical force. Handheld grinders are usually used to process workpieces that are not easy to grind on fixed grinders, such as the welds of the frame, the skeleton of the body and its covering parts, and the flash and burrs of large castings and forgings. Before use, you must hold the handle tightly with both hands to prevent the starting torque from causing it to fall and ensure the safety of the person and the machine. A protective cover must be installed to prevent iron chips from flying out and injuring people. The operator should not stand in the direction of the chips, and it is best to wear protective goggles. When grinding thin plate components, the grinding wheel should gently contact the workpiece and should not be too strong.
[0003] When a long edge needs to be ground and chamfered, the operator uses a handheld grinder to grind. Since the angle between the grinding wheel and the workpiece cannot always be kept consistent, inconsistent grinding shapes will occur, so an auxiliary device is needed. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an auxiliary device for a handheld grinder, which solves the problem in the prior art that the appearance of the chamfered corners is inconsistent when the handheld grinder is used for chamfering.
[0005] According to an embodiment of the utility model, an auxiliary device of a handheld grinder is provided, wherein the auxiliary device is connected to the grinder and comprises a connecting frame, two first rollers, two second rollers and a connecting assembly, wherein the connecting frame is an L-shaped frame structure composed of two planar frame structures, wherein the first roller and the second roller are respectively and rotatably connected to the two planar frames in the plane, the axes of the first roller and the second roller intersect, and a gap is provided between the two first rollers or the two second rollers; the connecting assembly is connected to the connecting frame and is located between the two first rollers or the two second rollers, and the connecting assembly is used to connect to the grinder and adjust the inclination angle of the grinder.
[0006] The technical principle of the utility model is: a handheld grinding machine is fixed on a connecting frame, a worker pushes the auxiliary device to move along the edge of the workpiece, and the grinding machine moves synchronously. During the movement, the first roller and the second roller fit two adjacent surfaces of the workpiece, so that the grinding machine is supported, so that the relative position of the grinding wheel on the grinding machine and the workpiece remains fixed without a significant change, thereby improving the processing quality of the workpiece.
[0007] Preferably, the connecting assembly includes a fixed frame, a first screw and a locking block, a connecting frame is provided with a connecting shaft, the fixed frame and the connecting shaft are rotatably connected, a gear is provided on the connecting shaft, the locking block is slidably arranged inside the fixed frame, the sliding direction of the locking block is perpendicular to the connecting shaft, one side of the locking block is provided with a concave arc surface, the arc surface is provided with a toothed structure, and the toothed structure is meshed with the gear; the sliding directions of the first screw and the locking block are parallel, one end of the first screw is rotatably connected to the locking block, the other end of the first screw extends to the outside of the fixed frame and is provided with a handle, and the first screw is threadedly connected to the fixed frame; the fixed frame is provided with a mounting hole for fixing the grinding machine.
[0008] Preferably, a clamping block is provided on one side of the mounting hole, and a second screw is rotatably connected to one side of the clamping block. The second screw passes through the fixing frame and extends to the outside of the fixing frame. A handle is fixedly provided on the free end of the second screw, and the second screw is threadedly connected to the fixing frame.
[0009] Preferably, a gripping portion is provided on the connecting frame.
[0010] Preferably, the connecting frame is made of aluminum alloy; the first roller and the second roller are made of stainless steel.
[0011] Preferably, cavities are provided inside the first roller and the second roller.
[0012] Preferably, an angle ruler is provided on the connecting shaft at a position close to the fixing frame.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model enables the positions of the hand-held grinder and the workpiece to remain relatively fixed, the contact position and angle of the grinding wheel of the hand-held grinder and the workpiece are always the same, and when the hand-held grinder and the auxiliary device move along the edge, the appearance of the workpiece after grinding remains consistent. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a top view of the utility model.
[0015] Figure 2 It is a schematic diagram of the fixed frame structure of the utility model.
[0016] Figure 3 The utility model is applicable to the grinding machine outline diagram.
[0017] Figure 4 It is a schematic diagram of the positions of the first roller and the second roller of the utility model.
[0018] Figure 5 It is a schematic diagram of the connection between the connecting shaft and the locking block of the utility model.
[0019] In the above drawings: 1, connecting frame; 2, first roller; 3, second roller; 4, fixing frame; 5, grinding wheel; 6, connecting shaft; 7, locking block; 8, first screw; 9, clamping block; 10, second screw; 11, mounting hole; 12, workpiece; 13, gripping part. DETAILED DESCRIPTION
[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] like Figure 1 , 3 As shown in Figures 4 and 5, an embodiment of the utility model proposes an auxiliary device for a handheld grinder, the auxiliary device is connected to the grinder 5, and includes a connecting frame 1, two first rollers 2, two second rollers 3 and a connecting assembly, the connecting frame 1 is an L-shaped frame structure composed of two plane frame structures, that is, the angle between the two plane frames is ninety degrees. The first roller 2 and the second roller 3 are respectively connected to the two plane frames in a plane and rotatably, the axes of the first roller 2 and the second roller 3 intersect, and a gap is provided between the two first rollers 2 or the two second rollers 3. The first roller 2 and the second roller 3 are arranged inside the ninety-degree angle of the L-shaped frame, and when the auxiliary device is placed on the corner of the workpiece 12, the first roller 2 and the second roller 3 will roll and contact with the two right-angled surfaces of the workpiece 12. The connecting assembly is connected to the connecting frame 1 and is located between the two first rollers 2 or the two second rollers 3, and the connecting assembly is used to connect to the grinder 5 and adjust the inclination angle of the grinder 5.
[0022] like Figure 2 , 5As shown, preferably, the connection assembly includes a fixed frame 4, a first screw 8 and a snap-fit block 7. A connecting shaft 6 is provided on the connecting frame 1. The connecting shaft 6 is provided between the first roller 2 or the second roller 3. The connecting shaft 6 is perpendicular to the axis of the first roller 2 or the second roller 3. The fixed frame 4 is rotatably connected to the connecting shaft 6. A through hole is provided on the fixed frame 4. The connecting shaft 6 is adapted to the through hole. A gear is provided on the connecting shaft 6. The gear is located inside the through hole. The snap-fit block 7 is slidably provided inside the fixed frame 4. The sliding direction of the snap-fit block 7 is perpendicular to the connecting shaft 6. A concave arc surface is provided on one side of the snap-fit block 7. A toothed structure is provided on the arc surface. The toothed structure meshes with the gear. A sliding groove for sliding the snap-fit block 7 is provided in the fixed frame 4. The opening of the movable groove faces the through hole. The sliding directions of the first screw 8 and the engaging block 7 are parallel, one end of the first screw 8 is rotatably connected to the engaging block 7, the other end of the first screw 8 extends to the outside of the fixed frame 4 and is provided with a handle, and the first screw 8 is threadedly connected to the fixed frame 4. The fixed frame 4 is provided with a mounting hole 11 for fixing the grinder 5. When the angle of the grinder 5 needs to be adjusted, the first screw 8 is rotated to move the engaging block 7 away from the connecting shaft 6. After the engaging block 7 is out of contact with the gear, the staff adjusts the bottom of the fixed frame 4, and then selects the first screw 8. The first screw 8 pushes the engaging block 7 to move closer to the gear and completes the engagement.
[0023] like Figure 2 As shown, preferably, a clamping block 9 is provided on one side of the mounting hole 11, and a second screw 10 is rotatably connected to one side of the clamping block 9. The second screw 10 passes through the fixed frame 4 and extends to the outside of the fixed frame 4. A handle is fixedly provided on the free end of the second screw 10, and the second screw 10 is threadedly connected to the fixed frame 4. When the auxiliary device needs to be used, the staff inserts the body of the grinder 5 into the mounting hole 11, and then rotates the second screw 10, so that the grinder 5 and the auxiliary device are fixedly connected. An anti-slip rubber pad is provided on the side where the clamping block 9 contacts the grinder 5.
[0024] like Figure 4 As shown, preferably, a gripping portion 13 is provided on the connecting frame 1 . After turning on the switch of the grinding machine 5 , the worker holds the gripping portion 13 and pushes the auxiliary device to move along the edge of the workpiece 12 .
[0025] Preferably, the connecting frame 1 is made of aluminum alloy, so that the staff consumes less physical strength during operation. The first roller 2 and the second roller 3 are made of stainless steel to avoid deformation of the first roller 2 and the second roller 3 during movement, which may cause the relative position of the grinding wheel and the workpiece 12 to change.
[0026] Preferably, cavities are provided inside the first roller 2 and the second roller 3 to reduce the total weight of the auxiliary device and improve its practicality.
[0027] Preferably, an angle ruler is provided on the connecting shaft 6 near the fixed frame 4 to facilitate the staff to check the relative angle between the grinding wheel and the workpiece 12 .
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. An auxiliary device for a handheld grinding machine, the auxiliary device being connected to the grinding machine (5), characterized in that: The invention comprises a connecting frame (1), two first rollers (2), two second rollers (3) and a connecting assembly, wherein the connecting frame (1) is an L-shaped frame structure composed of two plane frame structures, the first roller (2) and the second roller (3) are rotatably connected to the two plane frames respectively, the axes of the first roller (2) and the second roller (3) intersect, and a gap is provided between the two first rollers (2) and the two second rollers (3); the connecting assembly is connected to the connecting frame (1) and is located between the two first rollers (2) or the two second rollers (3), and the connecting assembly is used to connect to a grinding machine (5) and adjust the inclination angle of the grinding machine (5).
2. The auxiliary device for a handheld grinder according to claim 1, characterized in that: The connection assembly comprises a fixed frame (4), a first screw rod (8) and a snap-fit block (7); a connecting shaft (6) is arranged on the connecting frame (1); the fixed frame (4) and the connecting shaft (6) are rotatably connected; a gear is arranged on the connecting shaft (6); the snap-fit block (7) is slidably arranged inside the fixed frame (4); the sliding direction of the snap-fit block (7) is perpendicular to the connecting shaft (6); one side of the snap-fit block (7) is provided with an inwardly concave arc surface; a toothed structure is arranged on the arc surface; the toothed structure is meshed with the gear; the sliding directions of the first screw rod (8) and the snap-fit block (7) are parallel; one end of the first screw rod (8) is rotatably connected to the snap-fit block (7); the other end of the first screw rod (8) extends to the outside of the fixed frame (4) and is provided with a handle; the first screw rod (8) and the fixed frame (4) are threadedly connected; the fixed frame (4) is provided with a mounting hole (11) for fixing the grinding wheel machine (5).
3. The auxiliary device for a handheld grinder according to claim 2, characterized in that: A clamping block (9) is provided on one side of the mounting hole (11); a second screw rod (10) is rotatably connected to one side of the clamping block (9); the second screw rod (10) passes through the fixing frame (4) and extends to the outside of the fixing frame (4); a handle is fixedly provided on the free end of the second screw rod (10); and the second screw rod (10) and the fixing frame (4) are threadedly connected.
4. The auxiliary device for a handheld grinder according to claim 1, characterized in that: The connecting frame (1) is provided with a gripping portion (13).
5. The auxiliary device for a handheld grinder according to claim 1, characterized in that: The connecting frame (1) is made of aluminum alloy; the first roller (2) and the second roller (3) are made of stainless steel.
6. The auxiliary device for a handheld grinder according to claim 5, characterized in that: The first roller (2) and the second roller (3) are provided with cavities inside.
7. The auxiliary device for a handheld grinder according to claim 2, characterized in that: An angle ruler is provided on the connecting shaft (6) at a position close to the fixing frame (4).