Plate clamp of surface grinding machine

Abstract

The utility model relates to the technical field of grinding machines, in particular to a surface grinding machine plate clamp which comprises a grinding machine, a chip collecting groove and a magnetic suction cup, the magnetic suction cup is arranged in the chip collecting groove and adsorbs and clamps a plate, symmetrical self-locking type clamping mechanisms are arranged on the two sides of the magnetic suction cup, and an oil cylinder stretches out and draws back to drive a rotating plate connecting rod and an ejector block to slide left and right so as to clamp the plate. The self-locking oil cylinder has the advantages that the self-locking mechanism is arranged, so that a workpiece is prevented from loosening when the oil cylinder goes wrong; and secondly, the tightening and locking mechanism is a single set of clamp and is suitable for different grinding machines.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machines, in particular to a plate fixture for a surface grinding machine. Background Art

[0002] A surface grinder is a precision grinding machine used for steel, iron, cast iron, nonferrous metals, non-metals, plastics and other materials. When an electromagnetic chuck is used to adsorb plate-shaped workpieces for grinding on a surface grinder, the plate-shaped workpiece may fall off due to its large size. If the adsorption force is insufficient, the workpiece may fall off, which may endanger the life of the operator and may also cause damage to the machine tool equipment. After falling off, the workpiece needs to be reinstalled, which increases the grinding time and cost, thereby affecting production efficiency. After the plate-shaped workpiece is reinstalled, it is difficult to ensure that the accuracy and size meet the requirements, thereby affecting the quality of the product.

[0003] For example, patent number CN202321484766.2 is a surface grinder plate fixture, including a surface grinder, an electromagnetic suction cup is installed at the center of the upper surface of the surface grinder, a plate-shaped workpiece is provided on the upper surface of the electromagnetic suction cup, the upper surface of the surface grinder is fixedly connected to a box, the side wall of the hydraulic cylinder is clearance-matched with the side wall of the box, a piston rod is installed in the inner cavity of the hydraulic cylinder, the other end of the piston rod is fixedly connected to a push block, and the end of the push block fits with both sides of the plate-shaped workpiece. Through the coordination of hydraulic and electromagnetic adsorption, it is possible to prevent the surface of the plate-shaped workpiece from bulging, loosening or over-grinding, which affects the surface quality. At the same time, it can avoid shutdown adjustments caused by workpiece displacement or shaking, ensure the safety of the processing process, avoid accidents such as the workpiece detaching from the fixing device and the grinding tool flying off, effectively improve processing accuracy and quality, production efficiency and work safety, and also help protect the quality of the machine tool and workpiece surface.

[0004] However, this mechanism has the following problems: there is no self-locking device, and when the hydraulic cylinder fails, the workpiece is prone to loosening. Utility Model Content

[0005] The purpose of the utility model is to provide a plate fixture for a surface grinder to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a surface grinder plate fixture, comprising a grinder, a cutting groove and a magnetic suction cup, the magnetic suction cup is arranged in the cutting groove and adsorbs and clamps the plate, and is characterized in that: symmetrical self-locking clamping mechanisms are provided on both sides of the magnetic suction cup, including a clamping chassis, an oil cylinder, a rotating plate, a connecting rod and a top block, the rotating plate is an isosceles triangle and has pin shaft holes at three corners, the clamping chassis is fixed to both sides of the magnetic suction cup by bolts, and oil cylinder brackets and guide grooves are provided on both sides of the clamping chassis, a support frame is provided in the middle and is connected to one corner of the rotating plate through an axis, the other two corners of the rotating plate are hinged to the top of the oil cylinder and one end of the connecting rod respectively, and the other end of the connecting rod is hinged to the top block.

[0007] Preferably, the top block slides in the guide groove.

[0008] Preferably, the tail end of the oil cylinder is hinged to the oil cylinder bracket.

[0009] Preferably, the top block is cylindrical and its highest point is lower than the top surface of the clamping plate.

[0010] Preferably, when the oil cylinder is in a fully extended state, the connecting rod and the top block are on the same axis.

[0011] Preferably, the end of the top block in contact with the clamping plate is covered with a rubber pad.

[0012] Compared with the prior art, the beneficial effects of the present invention are: first, a self-locking mechanism is provided to prevent the workpiece from loosening when a problem occurs in the oil cylinder; second, the tightening and locking mechanism is a separate set of clamps, which is suitable for different grinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] In the figure: 1. Grinder; 2. Clamping chassis; 3. Support frame; 4. Cylinder bracket; 5. Cylinder; 6. Chip collecting groove; 7. Turntable; 8. Connecting rod; 9. Ejector block; 10. Guide groove; 11. Clamping plate; 12. Magnetic suction cup. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1The utility model provides a technical solution: a surface grinder plate fixture, comprising a grinder 1, a cutting groove 6 and a magnetic suction cup 12, the magnetic suction cup 12 is arranged in the cutting groove 6 and adsorbs the clamping plate 11, and is characterized in that: symmetrical self-locking clamping mechanisms are provided on both sides of the magnetic suction cup 12, including a clamping chassis 2, an oil cylinder 5, a rotating plate 7, a connecting rod 8 and a top block 9, the rotating plate 7 is an isosceles triangle and has pin holes at its three corners, the clamping chassis 2 is fixed to both sides of the magnetic suction cup 12 by bolts, and oil cylinder brackets 4 and guide grooves 10 are provided on both sides of the clamping chassis 2, a support frame 3 is provided in the middle and is connected to one corner of the rotating plate 7 through an axis, and the other two corners of the rotating plate 7 are hinged to the top of the oil cylinder 5 and one end of the connecting rod 8, respectively, and the other end of the connecting rod 8 is hinged to the top block 9.

[0017] The top block 9 then slides in the guide groove 10, and the tail end of the cylinder 5 is hinged to the cylinder bracket 4. The top block 9 is cylindrical and the highest point is lower than the top surface of the clamping plate 11. When the cylinder 5 is fully extended, the connecting rod 8 and the top block 9 are on the same axis. At the same time, the end of the top block 9 that contacts the clamping plate 11 is covered with a rubber pad.

[0018] The specific working principle is as follows:

[0019] When the oil cylinder 5 is extended, the rotating plate 7 is pushed to rotate on the support frame 3, so that the connecting rod 8 pushes the top block 9 to approach the clamping plate 11. When it is fully extended, the connecting rod 8 and the top block 9 are on the same axis, and the top blocks 9 on both sides are clamped with the clamping plates 11. At this time, even if there is no pressure in the oil cylinder 5, under the action of the gravity of the connecting rod 8 and the top block 9, the connecting rod 8 will not move upward, avoiding the displacement of the top block 9; only when the oil cylinder 5 contracts will it drive the rotating plate 7 to pull the connecting rod 8, so that the top block 9 is away from the clamping plate 11, loosening the plate, and a rubber pad is provided to avoid damage to the plate.

[0020] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface grinding machine plate fixture, comprising a grinding machine (1), a cutting groove (6) and a magnetic chuck (12), wherein the magnetic chuck (12) is arranged in the cutting groove (6) and adsorbs and clamps the plate (11), characterized in that: Symmetrical self-locking clamping mechanisms are provided on both sides of the magnetic chuck (12), including a clamping chassis (2), an oil cylinder (5), a rotating plate (7), a connecting rod (8) and a top block (9). The rotating plate (7) is an isosceles triangle and has pin holes at its three corners. The clamping chassis (2) is fixed to both sides of the magnetic chuck (12) by bolts, and oil cylinder brackets (4) and guide grooves (10) are provided on both sides of the clamping chassis (2). A support frame (3) is provided in the middle and is connected to one corner of the rotating plate (7) through an axis. The other two corners of the rotating plate (7) are hinged to the top of the oil cylinder (5) and one end of the connecting rod (8), respectively, and the other end of the connecting rod (8) is hinged to the top block (9).

2. The surface grinding machine plate fixture according to claim 1, characterized in that: The top block (9) then slides in the guide groove (10).

3. The surface grinding machine plate fixture according to claim 1, characterized in that: The tail end of the oil cylinder (5) is hinged to the oil cylinder bracket (4).

4. The surface grinding machine plate fixture according to claim 1, characterized in that: The top block (9) is cylindrical and its highest point is lower than the top surface of the clamping plate (11).

5. The surface grinding machine plate fixture according to claim 1, characterized in that: When the oil cylinder (5) is in a fully extended state, the connecting rod (8) and the top block (9) are on the same axis.

6. The surface grinding machine plate fixture according to claim 1, characterized in that: One end of the top block (9) in contact with the clamping plate (11) is covered with a rubber pad.

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