A numerical control film sheet chuck

Abstract

The utility model discloses a kind of milling diaphragm chuck, including telescopic cylinder, deformed membrane disc and chuck, the deformed membrane disc is connected in the top of telescopic cylinder, the chuck is connected in the top of deformed membrane disc, the chuck is formed by multiple evenly distributed clamping seat along circumferential direction, the top of multiple clamping seat is opened with the communicating workpiece retaining groove in corresponding place, when the telescopic cylinder acts, drive deformed membrane disc to occur deformation and drive multiple clamping seat to produce inner support or clamping movement, the utility model is continuously and evenly by the deformation of deformed membrane disc, can evenly transmit the power of telescopic cylinder to each clamping seat, make the force exerted by each clamping seat on workpiece substantially consistent, avoid the problem such as workpiece deformation or unstable clamping caused by uneven clamping force, and clamping precision is high.

Description

Technical Field

[0001] This utility model relates to the field of CNC milling chuck technology, specifically a CNC milling diaphragm chuck. Background Technology

[0002] In the field of CNC milling, the chuck, as a key tooling fixture, directly affects the machining accuracy, clamping efficiency, and stability of the machining process. With the increasing demands for machining accuracy and production efficiency in the manufacturing industry, traditional chuck technology has gradually revealed many shortcomings. Traditional chucks, such as three-jaw chucks, often struggle to achieve a uniform distribution of clamping force when clamping workpieces. Due to the independent movement characteristics of the jaws, the pressure at which each jaw contacts the workpiece may differ. For example, when machining workpieces with irregular shapes or uneven wall thicknesses, some jaws may exert excessive clamping force while others exert insufficient force. Areas with excessive clamping force may cause indentations or even deformation on the workpiece surface, affecting machining accuracy and surface quality. Areas with insufficient clamping force may cause the workpiece to loosen during machining, leading to machining errors, and in severe cases, even causing the workpiece to fly out, resulting in safety accidents. Therefore, it is necessary to design a CNC milling diaphragm chuck to improve upon these problems. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a digital milling diaphragm chuck, which aims to solve the problem of uneven clamping force distribution in traditional digital milling chucks, which easily leads to machining errors.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A digit milling diaphragm chuck, comprising: Telescopic cylinder; A deformable diaphragm disc, which is connected to the top of a telescopic cylinder; A chuck is connected to the top of a deformable film disc. The chuck is composed of multiple chuck seats evenly distributed along the circumference. Each of the multiple chuck seats has a corresponding workpiece retaining groove on its top. When the telescopic cylinder is activated, it drives the deformable diaphragm to deform, causing multiple card holders to perform an internal support / clamping motion.

[0005] Preferably, the telescopic cylinder comprises: Cylinder seat; Cylinder head, which is fixedly connected to the top of cylinder block; Piston, which is slidably mounted inside the cylinder seat; A piston rod, which is fixedly connected to the top of the piston, and the top end of the piston rod passes through the cylinder head and extends to the outside.

[0006] Preferably, the deformable diaphragm is fixedly connected to the top of the cylinder head by bolts, and an installation hole is provided at the center of the deformable diaphragm, and the top end of the piston rod is fixedly connected to the installation hole.

[0007] Preferably, the bottom of the deformable film disc has a deformable groove circumferentially formed.

[0008] Preferably, the top of the deformable film disc is provided with multiple mounting blocks at equal intervals along the circumferential direction, the number of mounting blocks being the same as the number of card holders, and the card holders and mounting blocks are fixedly connected one-to-one by bolts.

[0009] Preferably, a limiting block is fixedly connected to the bottom of the card holder, the limiting block is placed inside the mounting block, and the height of the limiting block is less than the height of the mounting block.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a telescopic cylinder, a deformable diaphragm, and a chuck. The telescopic cylinder causes the deformable diaphragm to deform under force, which in turn drives multiple chucks evenly distributed along the circumference to synchronously internally support or clamp in a preset manner. This clamps or releases the workpiece to be CNC-milled within the workpiece retaining groove. The deformation of the deformable diaphragm is continuous and uniform, which can evenly transmit the power of the telescopic cylinder to each chuck, ensuring that the force applied by each chuck to the workpiece is basically the same. This avoids problems such as workpiece deformation or unstable clamping caused by uneven clamping force, resulting in high clamping accuracy. Due to the uniform force transmission and synchronous movement of the chucks, the workpiece can maintain high positional and centering accuracy during clamping. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of a milling diaphragm chuck; Figure 2 A schematic diagram of the telescopic cylinder and the deformable diaphragm disc; Figure 3 A three-dimensional cross-sectional structural diagram of a milling diaphragm chuck. Figure 4 This is a schematic diagram of the main view of the cross-section of a milled diaphragm chuck.

[0012] In the diagram: 1. Telescopic cylinder; 101. Cylinder seat; 102. Cylinder head; 103. Piston; 104. Piston rod; 2. Deformation diaphragm disc; 201. Mounting block; 202. Deformation groove; 3. Chuck; 301. Chuck seat; 302. Workpiece retaining groove; 303. Limiting block. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0014] Example: Please refer to Figures 1-4 This embodiment provides a CNC milling diaphragm chuck, including a telescopic cylinder 1, a deformable diaphragm disc 2, and a chuck 3. The deformable diaphragm disc 2 is connected to the top of the telescopic cylinder 1, and the chuck 3 is connected to the top of the deformable diaphragm disc 2. The chuck 3 is composed of multiple chuck seats 301 evenly distributed along the circumference. Correspondingly opposite positions on the top of each of the multiple chuck seats 301 are provided with interconnected workpiece retaining grooves 302. The workpiece retaining grooves 302 are located at the center of the top of the chuck 3. When the telescopic cylinder 1 is activated, it drives the deformable diaphragm disc 2 to deform, causing the multiple chuck seats 301 to perform an inward support / clamping movement. In use, the workpiece to be CNC milled is placed inside the workpiece retaining groove 302, and the telescopic cylinder 1 causes the deformable diaphragm disc 2 to be subjected to... When the force causes deformation, it drives multiple clamping seats 301 evenly distributed along the circumference to perform synchronous internal support or clamping movements in a preset manner. This is used to clamp or release the workpiece to be CNC milled in the workpiece fixing groove 302. The deformation of the deformation diaphragm 2 is continuous and uniform, which can evenly transmit the power of the telescopic cylinder 1 to each clamping seat 301, so that the force applied by each clamping seat 301 to the workpiece is basically the same. This avoids problems such as workpiece deformation or unstable clamping caused by uneven clamping force. The clamping accuracy is high. Due to the uniform transmission of force and the synchronous movement of the clamping seats 301, the workpiece can maintain high positional accuracy and centering accuracy during the clamping process.

[0015] In this embodiment, as Figure 3 and Figure 4As shown, the telescopic cylinder 1 includes a cylinder seat 101, a cylinder head 102, a piston 103, and a piston rod 104. The cylinder head 102 is fixedly connected to the top of the cylinder seat 101, and the cylinder head 102 and the cylinder seat 101 are fixedly connected by bolts. A sealing structure is provided between the cylinder head 102 and the cylinder seat 101. The piston 103 is slidably installed inside the cylinder seat 101. The piston rod 104 is fixedly connected to the top of the piston 103, and the piston rod 104 and the piston 103 are integrally formed. The top end of the piston rod 104 penetrates the cylinder head 102 and extends to the outside. The piston 103 and the inner wall of the cylinder seat 101 are sealed. A dynamic sealing structure is provided between the piston rod 104 and the cylinder head 102. A dynamic sealing structure is also provided between the piston rod 104 and the cylinder head 102. Two air pipe interfaces communicating with the inner cavity are provided on the cylinder seat 101. The telescopic cylinder 1 is existing technology and will not be described in detail here. High-pressure airflow is introduced into the cylinder seat 101 and acts on the bottom of the piston 103, generating an upward thrust, which pushes the piston 103 and the piston rod 104 connected to it to move upward. High-pressure airflow is introduced into the cylinder seat 101 and acts on the top of the piston 103, generating a downward thrust, which pushes the piston 103 and the piston rod 104 connected to it to move downward.

[0016] In this embodiment, as Figure 3 As shown, the deformable diaphragm 2 is fixedly connected to the top of the cylinder head 102 by bolts. A mounting hole is provided at the center of the deformable diaphragm 2, and the top end of the piston rod 104 is fixedly connected to the mounting hole. A deformation groove 202 is provided in the annular shape at the bottom of the deformable diaphragm 2. The linear movement of the piston rod 104 can directly and effectively apply power to the center position of the deformable diaphragm 2, so that the deformable diaphragm 2 can deform in the expected way, thereby driving the chuck 3 to produce accurate internal support or clamping movement. The existence of the deformation groove 202 allows the deformable diaphragm 2 to deform according to the preset annular area when it is subjected to the upward force of the piston rod 104, so as to evenly transmit the power of the telescopic cylinder 1 to the periphery connected to the chuck seat 301. This uniform deformation can enable multiple chuck seats 301 to generate internal support or clamping movement synchronously and evenly, thereby applying a uniform force to the workpiece, avoiding deformation of the workpiece due to uneven force, and improving the clamping quality.

[0017] In this embodiment, as Figure 2As shown, multiple mounting blocks 201 are evenly spaced along the circumference of the top of the deformable film disc 2. The mounting blocks 201 are integrally formed with the deformable film disc 2. The number of mounting blocks 201 is the same as the number of card holders 301. The card holders 301 and the mounting blocks 201 are connected one-to-one by bolts. This structural design facilitates the assembly of the card holders 301 and the deformable film disc 2, and provides convenience for the installation and disassembly of the card holders 301 and the mounting blocks 201. When it is necessary to maintain the chuck 3, replace the card holders 301, or perform other operations, technicians can easily disassemble and install them with bolts, reducing the complexity and difficulty of the operation, improving work efficiency, and also reducing the risk of structural damage caused by improper installation.

[0018] In this embodiment, as Figure 4 As shown, a limiting block 303 is fixedly connected to the bottom of the card holder 301. The limiting block 303 is integrally formed with the card holder 301 and is located inside the mounting block 201. The height of the limiting block 303 is less than the height of the mounting block 201. The limiting block 303, positioned inside the mounting block 201, can limit the movement range of the card holder 301. When the deformation of the deformable membrane disk 2 causes the card holder 301 to undergo internal support or clamping movement, the limiting block 303 can prevent the card holder 301 from exceeding a reasonable displacement range during movement, ensuring that the card holder 301 moves according to a predetermined trajectory and amplitude, thereby guaranteeing… The accuracy and stability of the chuck 3's movement enable the workpiece to be precisely clamped or released. Since the height of the limit block 303 is less than that of the mounting block 201, when the deformable diaphragm 2 deforms normally and drives the chuck 301 to move, the limit block 303 will not interfere with the normal movement of the chuck 301. However, when abnormal situations occur, such as excessive pressure of the telescopic cylinder 1 causing excessive deformation of the deformable diaphragm 2, the limit block 303 can promptly act as a stop to prevent the chuck 301 from moving excessively, thus avoiding damage to components such as the deformable diaphragm 2 and the chuck 301 due to excessive deformation, and protecting the entire chuck structure.

[0019] Working principle: During use, the workpiece to be CNC milled is placed inside the workpiece retaining groove 302. The extension action of the telescopic cylinder 1 drives the deformation diaphragm 2 to push outward along the center, thereby causing multiple clamping seats 301 to move closer together and clamp the workpiece to be CNC milled in the workpiece retaining groove 302. The retraction action of the telescopic cylinder 1 drives the deformation diaphragm 2 to retract inward along the center, thereby causing the multiple clamping seats 301 to open inward, releasing the workpiece to be CNC milled in the workpiece retaining groove 302. Because the deformation of the deformation diaphragm 2 is continuous and uniform, the power of the telescopic cylinder 1 can be evenly transmitted to each clamping seat 301, so that the force applied by each clamping seat 301 to the workpiece is basically the same, avoiding problems such as workpiece deformation or unstable clamping caused by uneven clamping force, and achieving high clamping accuracy.

[0020] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A digitized diaphragm chuck, characterized in that, include: Telescopic cylinder (1); Deformable membrane disc (2), the deformable membrane disc (2) is connected to the top of telescopic cylinder (1); The chuck (3) is connected to the top of the deformable film disc (2). The chuck (3) is composed of multiple chuck seats (301) evenly distributed along the circumference. The tops of the multiple chuck seats (301) are provided with corresponding workpiece retaining grooves (302). When the telescopic cylinder (1) is activated, it drives the deformable diaphragm (2) to deform, which in turn drives multiple card holders (301) to produce an internal support / clamping motion.

2. The digitized diaphragm chuck according to claim 1, characterized in that, The telescopic cylinder (1) includes: Cylinder seat (101); Cylinder head (102), the cylinder head (102) is fixedly connected to the top of cylinder seat (101); Piston (103), which is slidably mounted inside cylinder seat (101); A piston rod (104) is fixedly connected to the top of the piston (103), and the top end of the piston rod (104) passes through the cylinder head (102) and extends to the outside.

3. A digitized diaphragm chuck according to claim 2, characterized in that, The deformable diaphragm (2) is fixedly connected to the top of the cylinder head (102) by bolts. An installation hole is provided at the center of the deformable diaphragm (2), and the top end of the piston rod (104) is fixedly connected to the installation hole.

4. A digitized diaphragm chuck according to claim 1, characterized in that, The bottom of the deformable membrane disc (2) is provided with a deformable groove (202) in an annular shape.

5. A digitized diaphragm chuck according to claim 1, characterized in that, The top of the deformable film disc (2) is provided with multiple mounting blocks (201) at equal intervals along the circumferential direction. The number of mounting blocks (201) is the same as the number of card holders (301). The card holders (301) and mounting blocks (201) are connected one-to-one by bolts.

6. A digitized diaphragm chuck according to claim 4, characterized in that, The bottom of the card holder (301) is fixedly connected to a limiting block (303), the limiting block (303) is placed inside the mounting block (201), and the height of the limiting block (303) is less than the height of the mounting block (201).

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