Self-adaptive three-jaw chuck floating clamping jaw

Abstract

The utility model relates to the technical field of machining, in particular to a self-adaptive three-jaw chuck floating clamping jaw which comprises connecting discs, self-adaptive rotating blocks, steel jaws and a chuck, the three connecting discs of sector plate-shaped structures are fixedly connected to the three jaws of the chuck respectively, a plurality of mounting positions of the self-adaptive rotating blocks are arranged on the connecting discs from inside to outside, and the steel jaws are arranged on the steel jaws of the chuck. The self-adaptive rotating block is of an arc-shaped block structure, and steel claws are installed at the two ends of the inner arc face and the two ends of the outer arc face of the self-adaptive rotating block respectively. According to the floating clamping jaw of the self-adaptive three-jaw chuck, the universal design concept is adopted, the non-roundness characteristic of a disc part blank and an annular part blank is combined, the clamping jaw capable of changing and clamping along with the outline of the part is designed, the tool cost is reduced, manual operation is reduced, the production efficiency is improved, and the equipment utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to an adaptive three-jaw chuck with floating jaws. Background Technology

[0002] In the semiconductor equipment and mechanical parts manufacturing industry, the machining of circular and ring-shaped parts plays a crucial role. However, the blanks for these parts often exhibit non-circular characteristics, posing challenges to the machining process. Traditional machining methods typically require the design of dedicated consumable tooling to hold these parts. This tooling necessitates loading, unloading, and clamping before each use, increasing tooling costs and worker operating frequency, thereby reducing production efficiency and equipment utilization.

[0003] With the advancement and diversification of semiconductor equipment and the rapid popularization of intelligent manufacturing, the market demand for fixtures that can be quickly applied and are highly versatile is increasing. Traditional dedicated tooling is clearly unable to meet this demand for efficient and flexible production. Therefore, it is necessary to develop a new type of clamping device to accommodate the non-circular characteristics of circular and annular part blanks, while reducing tooling costs, minimizing manual operations, and improving production efficiency and equipment utilization.

[0004] Against this backdrop, the present invention proposes a design scheme for an adaptive three-jaw chuck with floating jaws, which aims to achieve stable clamping of circular and annular parts while meeting the requirements of efficient and flexible production. Utility Model Content

[0005] To address the aforementioned issues, this invention provides an adaptive three-jaw chuck with floating jaws. This adaptive three-jaw chuck with floating jaws adopts a universal design concept, taking into account the non-circular characteristics of disc and ring-shaped part blanks, and designs jaws that can change clamping according to the contour of the part, thereby reducing tooling costs, reducing manual operation, improving production efficiency, and increasing equipment utilization.

[0006] The technical solution of this utility model is as follows:

[0007] An adaptive three-jaw chuck floating jaw includes a connecting plate, an adaptive rotating block, steel jaws, and a chuck. The three fan-shaped plate-like connecting plates are fixedly connected to the three jaws of the chuck. Several mounting positions for the adaptive rotating blocks are arranged from the inside to the outside on the connecting plate. The adaptive rotating blocks are arc-shaped block structures, and steel jaws are installed at both ends of the inner and outer arc surfaces of the adaptive rotating blocks.

[0008] A positioning locking hole one is provided at the installation position. Positioning locking hole one is a threaded hole with a countersunk hole. A positioning locking hole two is provided on the adaptive rotating block. Positioning locking hole two is a stepped smooth hole. The positioning locking shaft passes through the external thread at the rear end of positioning locking hole two and is threadedly connected to the threaded hole of positioning locking hole one.

[0009] A straight bushing is provided inside the positioning and locking hole.

[0010] A stepped bushing is provided inside the second positioning and locking hole.

[0011] The mounting position is marked with text indicating the clamping travel and inner support travel.

[0012] A pad group containing several pads of different thicknesses is provided between the adaptive rotating block and the connecting plate to meet the clamping height of different parts.

[0013] The thickness of the spacers in the spacer set is 2mm, 5mm, or 10mm.

[0014] The steel claws are made of tungsten steel.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The present invention discloses an adaptive three-jaw chuck floating jaw, which can flexibly adapt to the clamping requirements of parts of different sizes and heights through the combination of adaptive rotating blocks and pad blocks.

[0017] 2. The present invention discloses an adaptive three-jaw chuck floating jaw. The connecting plate of the adaptive three-jaw chuck floating jaw is made of special steel, which ensures good rigidity and stability and is not easily deformed. At the same time, the connection between the connecting plate and the adaptive rotating block is achieved through the cooperation of the positioning locking shaft and the bushing, which ensures a high-precision connection, enhances wear resistance, and makes clamping more stable and reliable.

[0018] 3. The present invention discloses an adaptive three-jaw chuck floating jaw. The steel jaw of the adaptive three-jaw chuck floating jaw is made of tungsten steel with high hardness and high wear resistance, which significantly extends the service life of the floating jaw. At the same time, the adaptive rotating block and the positioning locking shaft are also made of alloy steel, ensuring sufficient rigidity and toughness, and further enhancing the wear resistance and durability of the entire jaw system.

[0019] 4. The present invention discloses an adaptive three-jaw chuck floating jaw. The adaptive three-jaw chuck floating jaw has text engraved next to the mounting position indicating the clamping stroke and inner support stroke, which makes it easier for operators to adjust as needed during use, reducing the difficulty and complexity of operation; in addition, the design of the floating jaw also reduces the dependence on tooling costs and the need for manual operation, thereby improving production efficiency.

[0020] 5. The present invention discloses an adaptive three-jaw chuck floating jaw, which has high adaptability and versatility and can be used to clamp parts of various shapes and sizes, thus significantly improving the utilization rate of the equipment; at the same time, its stable clamping performance and convenient operation also help to improve the overall efficiency and stability of the production line. Attached Figure Description

[0021] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0022] In the attached diagram:

[0023] Figure 1 This is a three-dimensional exploded view of the floating jaws of an adaptive three-jaw chuck according to an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of an adaptive three-jaw chuck floating jaw in use according to an embodiment of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the connecting disc of an adaptive three-jaw chuck with floating jaws, according to an embodiment of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the adaptive rotating block of an adaptive three-jaw chuck floating jaw according to an embodiment of the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the steel jaws of an adaptive three-jaw chuck floating jaw according to an embodiment of the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of a pad block assembly for an adaptive three-jaw chuck floating jaw according to an embodiment of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the positioning and locking shaft of the floating jaw of an adaptive three-jaw chuck according to an embodiment of the present invention.

[0030] Figure 8 This is a three-dimensional structural schematic diagram of the stepped bushing of the floating jaw of an adaptive three-jaw chuck according to an embodiment of the present invention.

[0031] Figure 9 This is a three-dimensional structural diagram of the straight bushing of the floating jaw of an adaptive three-jaw chuck according to an embodiment of the present invention.

[0032] The components represented by the various reference numerals in the diagram are:

[0033] This utility model comprises: 1. Connecting disc, 11. Positioning and locking hole one, 2. Adaptive rotating block, 21. Positioning and locking hole two, 3. Steel claw, 4. Pad group A, 5. Pad group B, 6. Pad group C, 7. Positioning and locking shaft, 71. External thread, 8. Stepped bushing, 9. Straight bushing, 10. Screw assembly A, 11. Screw assembly B, 12. Screw assembly C, 13. Screw assembly D, 14. Screw assembly E, 15. Screw assembly F, 16. Chuck, 17. Parts. Detailed Implementation

[0034] The adaptive three-jaw chuck with floating jaws is designed to reduce tooling costs, minimize manual operations, and improve production efficiency and equipment utilization. This floating jaw adopts a universal design concept, taking into account the non-circular characteristics of disc and ring-shaped part blanks. The jaws are designed to float, automatically adjusting the clamping force to follow changes in the part's contour.

[0035] like Figure 1 As shown, the adaptive three-jaw chuck floating jaws mainly include the following components:

[0036] Connecting plate 1: Made of special steel, it has good rigidity and is not easily deformed, ensuring stability during use. For example... Figure 3 As shown, the connecting plate is divided into three parts, which are connected to the three steel claws of the chuck 16 respectively. Several self-adaptive rotating block 2 mounting positions are provided on the connecting plate from the inside to the outside. Each mounting position is provided with a positioning locking hole 11, which is a threaded hole with a countersunk head.

[0037] Adaptive Rotary Block 2: Made of alloy steel, it boasts high rigidity and a certain degree of toughness, providing greater stability when clamping workpieces. For example... Figure 4 As shown, the adaptive rotating block is an arc-shaped block structure, with steel claws 3 installed at both ends of its inner and outer arc surfaces. A positioning and locking hole 21, which is a stepped smooth hole, is provided on the adaptive rotating block.

[0038] Steel Claw 3: As Figure 5 As shown, the floating jaws are made of tungsten steel, which has high hardness and wear resistance, extending their service life. The steel jaws are connected to the adaptive rotating block via screw assembly E14.

[0039] Pad block assembly: such as Figure 6 As shown, it includes pad group A4, pad group B5, and pad group C6, which have different thickness specifications (2mm, 5mm, 10mm). By stacking them together, they can meet the requirements of various clamping heights for parts.

[0040] Positioning and locking shaft 7: as Figure 7As shown, it is made of alloy steel, which has high rigidity and a certain degree of toughness. The positioning and locking shaft 7 passes through the positioning and locking hole 21 of the adaptive rotating block, and the external thread 71 at its rear end is threadedly connected to the threaded hole of the positioning and locking hole 11 of the connecting plate, thereby firmly connecting the adaptive rotating block and the connecting plate together.

[0041] Bushing: such as Figure 8 and Figure 9 As shown, it includes a straight bushing 9 and a stepped bushing 8. The straight bushing 9 is embedded in the positioning and locking hole 11 of the connecting plate 1, and the stepped bushing 8 is embedded in the positioning and locking hole 21 of the adaptive rotating block 2 to enhance wear resistance and connection accuracy.

[0042] Screw assemblies: including screw assembly A10, screw assembly B11, screw assembly C12, screw assembly D13, screw assembly E14, and screw assembly F15, generally containing screws and washers, used for interconnection of various parts. This is the most commonly used existing technology in the industry, and the installation and use of screw assemblies will not be described in detail in this article.

[0043] The chuck 16 has three steel jaws for mounting and supporting the connecting disc and the floating jaw structure.

[0044] Installation process of floating jaws for adaptive three-jaw chuck:

[0045] 1. Preparation Stage: Gather all manufactured and standard parts according to the list, including connecting discs, adaptive rotating blocks, steel claws, pad blocks, positioning and locking shafts, bushings, screw assemblies, and chucks. Assembly can only proceed after all manufactured and standard parts have been checked and found to be correct.

[0046] 2. Connection between the steel claw and the adaptive rotating block: Use screw assembly E to connect the steel claw to the adaptive rotating block, ensuring that the steel claw is tightly attached to the adaptive rotating block to form a stable clamping structure.

[0047] 3. Bushing insertion: Insert the straight bushing into the positioning and locking hole of the connecting plate, and insert the stepped bushing into the positioning and locking hole of the adaptive rotating block.

[0048] 4. Connection between the adaptive rotating block and the connecting plate: Use a positioning locking shaft to pass through the positioning locking hole of the adaptive rotating block, and thread the external thread at its rear end to the threaded hole of the positioning locking hole of the connecting plate.

[0049] 5. Installation of connecting plate and chuck: Use screw assembly F to install the connected connecting plate onto the three steel claws of the chuck according to the markings.

[0050] 6. Installation of spacers: Select appropriate spacers for installation based on the diameter of the part to be processed and the required clamping height.

[0051] 7. Part Placement and Clamping: Adjust the position of the connecting plate to allow the part to be smoothly placed into the floating jaws. Then rotate the knob on the chuck; the interaction between the three steel jaws of the chuck and the connecting plate clamps the part. Due to the adaptive rotating block and the floating design of the steel jaws, the jaws can automatically adjust the clamping force according to the contour changes of the part, such as... Figure 2 As shown.

[0052] This adaptive three-jaw chuck with floating jaws is highly adaptable and versatile, and can significantly reduce tooling costs, reduce manual operation, and improve production efficiency and equipment utilization.

Claims

1. An adaptive three-jaw chuck with floating jaws, characterized in that, It includes a connecting plate (1), an adaptive rotating block (2), a steel claw (3) and a chuck (16). The three fan-shaped plate-shaped connecting plates (1) are fixedly connected to the three claws of the chuck (16). Several mounting positions for the adaptive rotating blocks (2) are provided on the connecting plate (1) from the inside to the outside. The adaptive rotating block (2) is an arc-shaped block structure. Steel claws (3) are installed at both ends of the inner arc surface and the outer arc surface of the adaptive rotating block (2).

2. The adaptive three-jaw chuck floating jaw according to claim 1, characterized in that, A positioning locking hole 1 (11) is provided at the installation position. The positioning locking hole 1 (11) is a threaded hole with a countersunk hole. A positioning locking hole 2 (21) is provided on the adaptive rotating block (2). The positioning locking hole 2 (21) is a stepped smooth hole. The positioning locking shaft (7) passes through the external thread (71) at the rear end of the positioning locking hole 2 (21) and is threadedly connected to the threaded hole of the positioning locking hole 1 (11).

3. The adaptive three-jaw chuck floating jaw according to claim 2, characterized in that, A straight bushing (9) is provided inside the positioning and locking hole (11).

4. The adaptive three-jaw chuck floating jaw according to claim 2, characterized in that, A stepped bushing (8) is provided inside the second (21) positioning locking hole.

5. The adaptive three-jaw chuck floating jaw according to claim 1, characterized in that, The mounting position is marked with text indicating the clamping travel and inner support travel.

6. The adaptive three-jaw chuck floating jaw according to claim 1, characterized in that, A pad block group containing several pad blocks of different thicknesses is provided between the adaptive rotating block (2) and the connecting plate (1) to meet the clamping height of different parts (17).

7. The adaptive three-jaw chuck floating jaw according to claim 6, characterized in that, The thickness of the pads in the pad group is 2mm, 5mm, or 10mm.

8. The adaptive three-jaw chuck floating jaw according to claim 6, characterized in that, The steel claw (3) is made of tungsten steel.

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