A guard for a four jaw chuck

Abstract

The utility model discloses a protective cover for four -jaw chuck belongs to chuck accessory technical field, and the four -jaw chuck and protection subassembly are among them, protection subassembly sets up at the front end surface of four -jaw chuck, and protection subassembly includes four groups of base plate, apron, first sliding plate and second sliding plate, and base plate is bolted with the chuck body of four -jaw chuck, and apron, first sliding plate and second sliding plate all set up on base plate, when four -jaw chuck clamps work piece, and the claw is in the state of stretching out and the lower end of claw is in abutment with second sliding plate along chuck body radial outward, and base plate is set up with the radial feeding direction of claw as the axis symmetry, and every base plate is opened with rectangular groove along the height direction of itself, and the profile of every base plate perpendicular to the two sides of claw radial feeding direction is adapted with chuck body, and the device has solved the problem that the existing four -jaw chuck fixed type protective cover has too big protection gap.

Description

Technical Field

[0001] This utility model belongs to the field of chuck accessories technology, specifically relating to a protective cover for a four-jaw chuck. Background Technology

[0002] Four-jaw chucks are commonly used clamping components in lathes, machining centers, and other equipment. Their four jaws can move independently radially, making them suitable for clamping irregular or large workpieces. During laser cutting, the high-temperature molten slag / metal powder from laser cutting can easily splash and jam the jaw grooves, and the high-pressure auxiliary gas can easily carry dust into the chuck, resulting in malfunctioning jaws.

[0003] However, traditional four-jaw chucks are generally of fixed size and cannot accommodate radial adjustment of the jaws, resulting in excessive protective clearance. Therefore, this phenomenon has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a protective cover for a four-jaw chuck, which aims to solve the problem of excessive protective gaps in existing fixed protective covers for four-jaw chucks.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a protective cover for a four-jaw chuck, comprising a four-jaw chuck and a protective assembly, wherein the protective assembly is disposed on the front end face of the four-jaw chuck, and the protective assembly comprises four sets of base plates, a cover plate, a first sliding plate and a second sliding plate. The base plates are bolted to the chuck body of the four-jaw chuck, and the cover plate, the first sliding plate and the second sliding plate are all disposed on the base plates. When the four-jaw chuck clamps a workpiece, the jaws are in an extended state along the radial direction of the chuck body and the lower end of the jaws abuts against the second sliding plate.

[0006] The present invention further explains that the substrate is symmetrically arranged with the radial feed direction of the jaw as the axis, each substrate has a rectangular groove along its own height direction, and the two side contours of each substrate perpendicular to the radial feed direction of the jaw are adapted to the chuck body.

[0007] The present invention further explains that the second slide plate is disposed on one side of the base plate along the radial advancing direction of the chuck claw. The second slide plate has an inverted L-shaped structure. Two moving blocks are fixedly connected to the side of the second slide plate facing the base plate. The moving blocks are slidably connected to the rectangular groove. By moving the moving blocks, the second slide plate can move radially along the chuck body.

[0008] This utility model further explains that a helical spring is provided inside the rectangular groove. The axis of the helical spring is parallel to the feeding direction of the jaw. One end of the helical spring is fixedly connected to the moving block, and the other end of the helical spring is fixedly connected to the side of the rectangular groove near the center of the four-jaw chuck. Two limiting rods are slidably connected on the moving block. The other end of the limiting rods is fixedly connected to the side of the rectangular groove near the center of the four-jaw chuck. The helical spring is located between the two limiting rods. When the jaw is in the extended state, the helical spring is compressed, and the jaw abuts against the second sliding plate.

[0009] The present invention further describes that the cover plate is bolted to two sets of base plates, the length of the cover plate is greater than the distance between the two sets of base plates, the first slide plate is located below the cover plate, the length of the first slide plate is greater than the length of the cover plate, the two ends of the first slide plate are slidably connected to the rectangular groove, and the first slide plate is bolted to the claw.

[0010] This utility model further illustrates that the width of the first sliding plate, the natural length of the helical spring, and the feed range of the chuck are equal.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: By setting the second sliding plate and the helical spring to work together, and the natural length of the helical spring being equal to the feed range of the chuck, the second sliding plate and the chuck are always in close contact without any protective gaps; by setting the first sliding plate and the cover plate to be seamlessly connected to form a continuous protective surface, the sliding mating surface of the chuck is completely blocked from being invaded by chips and dust. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is the utility model Figure 2 Front view of the enlarged schematic diagram; Figure 4 This is a disassembled schematic diagram of the protective components of this utility model; Figure 5 This is the utility model Figure 4 Enlarged view of point B in the middle; In the diagram: 1. Four-jaw chuck; 2. Protective component; 3. Base plate; 4. Cover plate; 5. First sliding plate; 6. Second sliding plate; 7. Rectangular groove; 8. Moving block; 9. Helical spring; 10. Limiting rod. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-5 This utility model provides a technical solution: a protective cover for a four-jaw chuck, including a four-jaw chuck 1 and a protective component 2. The four-jaw chuck 1 consists of a chuck body, four jaws, and four sliders, which is prior art and will not be described in detail. The protective component 2 is disposed on the front end face of the four-jaw chuck 1. The protective component 2 includes four sets of base plates 3, cover plates 4, a first sliding plate 5, and a second sliding plate 6. The base plates 3 are bolted to the chuck body of the four-jaw chuck 1. The cover plates 4, the first sliding plate 5, and the second sliding plate 6 are all disposed on the base plates 3. When the four-jaw chuck 1 clamps a workpiece, the jaws are extended radially outward along the chuck body and the lower ends of the jaws abut against the second sliding plate 6.

[0015] The substrate 3 is symmetrically arranged with the radial feed direction of the jaw as the axis. Each substrate 3 has a rectangular groove 7 along its own height direction. The two side contours of each substrate 3 perpendicular to the radial feed direction of the jaw are adapted to the chuck body.

[0016] The second slide plate 6 is disposed on one side of the base plate 3 along the radial direction of the chuck. The second slide plate 6 has an inverted L-shaped structure. Two moving blocks 8 are fixedly connected to the side of the second slide plate 6 facing the base plate 3. The moving blocks 8 are slidably connected to the rectangular groove 7. By moving the moving blocks 8, the second slide plate 6 can move radially along the chuck body.

[0017] A helical spring 9 is installed inside the rectangular groove 7. The axis of the helical spring 9 is parallel to the feeding direction of the jaw. One end of the helical spring 9 is fixedly connected to the moving block 8, and the other end of the helical spring 9 is fixedly connected to the side of the rectangular groove 7 near the center of the four-jaw chuck 1. Two limit rods 10 are slidably connected on the moving block 8. The other end of the limit rod 10 is fixedly connected to the side of the rectangular groove 7 near the center of the four-jaw chuck 1. The helical spring 9 is located between the two limit rods 10. When the jaw is in the extended state, the helical spring 9 is compressed, and the jaw abuts against the second slide plate 6.

[0018] The cover plate 4 is bolted to the two sets of base plates 3. The length of the cover plate 4 is greater than the distance between the two sets of base plates 3. The first slide plate 5 is located below the cover plate 4. The length of the first slide plate 5 is greater than the length of the cover plate 4. The two ends of the first slide plate 5 are slidably connected to the rectangular groove 7. The first slide plate 5 is bolted to the claw.

[0019] The width of the first slide plate 5, the natural length of the helical spring 9, and the feed range of the chuck are equal.

[0020] Working principle: When the four-jaw chuck 1 clamps a workpiece, the jaws are driven by the slider to extend radially along the chuck body, thereby causing the first sliding plate 5 to slide along the rectangular groove 7 of the base plate 3. The cover plate 4 and the first sliding plate 5 form a retractable baffle to prevent chips and dust from entering the sliding mating surface of the jaws. On the other hand, the extended jaws gradually come into contact with the second sliding plate 6 and apply a pushing force to the second sliding plate 6, causing the second sliding plate 6 to slide towards the center of the chuck along the rectangular groove 7 via the moving block 8. The helical spring 9 in the rectangular groove 7 is deformed by the pushing force of the moving block 8, thereby storing elastic potential energy. The limiting rod 10 can prevent the helical spring 9 from swinging during compression. Spring 9 generates a force in the opposite direction to the thrust, causing the second slide plate 6 to fit tightly against the jaws. When the four-jaw chuck 1 releases the workpiece and resets, the jaws retract radially along the chuck body, and the thrust of the jaws on the second slide plate 6 disappears. At this time, the helical spring 9 releases its elastic potential energy, pushing the moving block 8 to reset along the rectangular groove 7 to the outside of the chuck body, thereby driving the second slide plate 6 to reset synchronously until the helical spring 9 returns to its natural length. The first slide plate 5 moves away from the center of the chuck body synchronously with the retraction of the jaws. Finally, the jaws, the first slide plate 5, and the second slide plate 6 complete the reset, forming a continuous, gapless protective surface that completely prevents chips and dust from entering the sliding mating surface of the jaws.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective cover for a four-jaw chuck, comprising a four-jaw chuck (1) and a protective assembly (2), characterized in that: The protective component (2) is disposed on the front end face of the four-jaw chuck (1). The protective component (2) includes four sets of base plates (3), cover plates (4), first slide plates (5) and second slide plates (6). The base plates (3) are bolted to the chuck body of the four-jaw chuck (1). The cover plates (4), first slide plates (5) and second slide plates (6) are all disposed on the base plates (3). When the four-jaw chuck (1) clamps the workpiece, the jaws are extended radially outward along the chuck body and the lower end of the jaws abuts against the second slide plate (6).

2. A protective cover for a four-jaw chuck according to claim 1, characterized in that: The substrate (3) is symmetrically arranged with the radial feed direction of the jaw as the axis. Each substrate (3) has a rectangular groove (7) along its own height direction. The two side contours of each substrate (3) perpendicular to the radial feed direction of the jaw are adapted to the chuck body.

3. A protective cover for a four-jaw chuck according to claim 2, characterized in that: The second slide plate (6) is disposed on one side of the base plate (3) along the radial direction of the claw. The second slide plate (6) has an inverted L-shaped structure. Two moving blocks (8) are fixedly connected to the side of the second slide plate (6) facing the base plate (3). The moving blocks (8) are slidably connected to the rectangular groove (7).

4. A protective cover for a four-jaw chuck according to claim 3, characterized in that: A helical spring (9) is provided inside the rectangular groove (7). The axis of the helical spring (9) is parallel to the feeding direction of the jaw. One end of the helical spring (9) is fixedly connected to the moving block (8), and the other end of the helical spring (9) is fixedly connected to the side of the rectangular groove (7) near the center of the four-jaw chuck (1). Two limiting rods (10) are slidably connected on the moving block (8). The other end of the limiting rod (10) is fixedly connected to the side of the rectangular groove (7) near the center of the four-jaw chuck (1). The helical spring (9) is located between the two limiting rods (10). When the jaw is in the extended state, the helical spring (9) is compressed, and the jaw abuts against the second sliding plate (6).

5. A protective cover for a four-jaw chuck according to claim 4, characterized in that: The cover plate (4) is bolted to two sets of base plates (3). The length of the cover plate (4) is greater than the distance between the two sets of base plates (3). The first slide plate (5) is located below the cover plate (4). The length of the first slide plate (5) is greater than the length of the cover plate (4). The two ends of the first slide plate (5) are slidably connected to the rectangular groove (7). The first slide plate (5) is bolted to the claw.

6. A protective cover for a four-jaw chuck according to claim 5, characterized in that: The width of the first slide plate (5), the natural length of the helical spring (9), and the feed range of the chuck are equal.

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