Milling machine tool plate locking structure and milling machine

Abstract

The application relates to the field of machining, in particular to a milling machine tool plate locking structure and a milling machine. The milling machine tool plate locking structure comprises a bottom plate, a workpiece tool plate and a plurality of lead screws fixedly arranged on the bottom plate, a pressing plate in transmission connection with one of the lead screws is assembled on the lead screw, the lead screw drives the pressing plate to move linearly in the direction of approaching or moving away from the workpiece tool plate, the workpiece is clamped and locked, the end of the lead screw is connected with a handle for driving the rotation of the lead screw, the plurality of lead screws are uniformly distributed and the axes are perpendicular to the surface of the workpiece tool plate, a positioning part is arranged on the workpiece tool plate and used for pre-positioning, an electromagnet is arranged on the workpiece tool plate, and a power cable in electric connection with the electromagnet is arranged on the workpiece tool plate; the electromagnet generates a magnetic force to adsorb the workpiece after being powered on; in addition, the milling machine comprises the locking structure, and a milling cutter is arranged on the machining end of a main body of the milling machine to machine the locked workpiece. The application has the technical effects of conveniently and stably clamping and locking the workpiece and improving machining precision and efficiency.

Description

Technical Field

[0001] This application relates to the field of machining, and in particular to a milling machine tooling locking structure and a milling machine. Background Technology

[0002] In the field of milling equipment technology, milling machines, as an important processing tool, are widely used in many industries such as machinery manufacturing and mold making. With the continuous development of the manufacturing industry, the requirements for the precision and efficiency of milling machine processing are also increasing. High-precision milling can produce products of better quality and superior performance, meeting the stringent requirements of different industries for the precision and quality of parts, and promoting technological progress and development in related industries.

[0003] In traditional milling processes, specific methods are typically used to mount and process the workpiece. Generally, the workpiece is mounted on a workpiece fixture using a jig, and then the fixture is placed on the milling machine table for machining. However, when fixing the fixture, effective locking mechanisms are often lacking, relying mostly on simple fixing methods, resulting in a loose and unstable connection between the fixture and the worktable.

[0004] However, traditional tooling plate fixing methods have significant drawbacks. When the milling cutter performs cutting or milling operations on the workpiece, the tooling plate is prone to vibration or displacement due to its unstable fixing. This vibration and displacement directly lead to a decrease in workpiece machining accuracy, resulting in large machining errors, seriously affecting product quality, and making it difficult to meet the needs of high-precision machining scenarios such as precision parts processing. Utility Model Content

[0005] The purpose of this application is to provide a locking structure for a milling machine tooling plate.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a milling machine tooling plate locking structure, including a base plate, on which a workpiece tooling plate is fixedly mounted; a plurality of lead screws are also mounted on the base plate, and pressure plates are mounted on the lead screws. The lead screws are connected to the pressure plates in a transmission manner to drive the pressure plates to move linearly in a direction close to or away from the workpiece tooling plate, thereby achieving clamping and locking of the workpiece through the cooperation between the pressure plates and the workpiece tooling plate.

[0007] By adopting the above technical solution, the problem of poor stability caused by the reliance on simple fixing methods in traditional milling machine tooling plates is effectively solved. The base plate provides fixed support for the workpiece tooling plate, and with the transmission connection between the lead screw and the pressure plate, the lead screw can precisely drive the pressure plate to move linearly towards or away from the workpiece tooling plate. This ensures a tight fit between the pressure plate and the workpiece tooling plate, achieving reliable clamping and locking of the workpiece. This significantly reduces vibration and displacement of the tooling plate and workpiece during milling, thereby reducing machining errors, ensuring workpiece machining accuracy and product quality, and meeting the needs of high-precision machining scenarios such as precision parts. Simultaneously, the screw-driven clamping and locking method is convenient to operate, allowing for workpiece fixing and release without complex operations, which helps improve operational efficiency during milling. Furthermore, the overall structure is simple, the mechanical transmission is reliable, and it can stably adapt to the milling machine's machining conditions for a long time, providing strong support for efficient production in industries such as machinery manufacturing and mold processing.

[0008] Optionally, a handle is connected to the end of the lead screw, and the handle is used to drive the lead screw to rotate so as to move the pressure plate.

[0009] By adopting the above technical solution, a handle is set at the end of the lead screw to drive its rotation, providing an intuitive and convenient manual drive method. Operators can directly apply force by holding the handle without the need for additional tools, easily controlling the rotation of the lead screw. The rotation of the lead screw is then precisely transmitted to the pressure plate to drive its movement. This drive method not only lowers the operational threshold, allowing operators to flexibly adjust the rotation direction and amount of the handle according to actual clamping needs, but also precisely controls the movement of the pressure plate along the workpiece fixture, achieving fine adjustment of the workpiece clamping force—avoiding workpiece displacement during processing due to excessively loose clamping, and preventing workpiece damage due to excessively tight clamping. Furthermore, compared to structures relying on electric or pneumatic drive components, the handle simplifies the overall device construction, reduces the risk of failure from complex drive components, and is lower in cost and easier to maintain. It further adapts to the rapid locking and releasing requirements during frequent workpiece switching in milling operations, improving operational efficiency.

[0010] Optionally, a plurality of the lead screws are evenly distributed, and the axis of each lead screw is perpendicular to the surface of the workpiece tooling plate.

[0011] By adopting the above technical solution, the even distribution of several lead screws ensures that the clamping force of the pressure plate driven by each lead screw on the workpiece fixture plate is evenly distributed along the plane of the fixture plate. This avoids deformation of the fixture plate or local pressure damage to the workpiece caused by localized force concentration. At the same time, it effectively balances the vibration and impact force generated by the milling cutter during machining, further reducing the risk of displacement of the fixture plate and the workpiece. Furthermore, the axis of each lead screw is perpendicular to the surface of the workpiece fixture plate, ensuring that the movement direction of the pressure plate is always perpendicular to the surface of the fixture plate when the lead screw drives the pressure plate. This allows the pressure of the pressure plate on the workpiece to act positively on the contact surface between the workpiece and the fixture plate, preventing lateral force from causing workpiece displacement or pressure plate misalignment, thus ensuring the accuracy of clamping and positioning. In addition, the evenly distributed lead screws, combined with the vertical axis setting, make it easier for operators to achieve overall clamping force balance through consistent adjustment of each lead screw, eliminating the need for repeated calibration of the force state at different positions. This simplifies the operation process and further improves the stability and machining accuracy of the workpiece during machining, better adapting to the machining requirements of high-precision parts.

[0012] Optionally, the workpiece tooling plate is provided with a positioning part, which is a positioning groove or a positioning boss, for pre-positioning the workpiece.

[0013] By adopting the above technical solution, the positioning part (positioning groove or positioning boss) on the workpiece tooling plate can effectively limit the workpiece at the initial stage of placement. By matching with the workpiece's shape or structure, it can quickly guide the workpiece to the preset processing position, avoiding workpiece position deviation caused by visual judgment errors or non-standard operation during manual placement. This reduces the adjustment steps before subsequent clamping and locking, significantly improving workpiece clamping efficiency. At the same time, when the pre-positioned workpiece is clamped by the pressure plate, it can fit with the tooling plate in a more accurate initial posture, reducing the problem of uneven clamping force distribution caused by initial position deviation, reducing the micro-displacement of the workpiece due to force imbalance during processing, and further ensuring processing accuracy. In addition, the positioning groove or positioning boss has a simple structure and strong adaptability. It can be flexibly designed according to the shape characteristics of different workpieces. When batch processing workpieces of the same specifications, it can ensure the consistency of the processing position of each workpiece through a unified pre-positioning benchmark, improving the standardization of the product. At the same time, it lowers the skill threshold for operators, allowing novices to quickly and accurately place the workpiece, indirectly improving the stability and efficiency of the overall processing flow.

[0014] Optionally, it also includes an electromagnet and a power cable; the electromagnet is disposed on the workpiece fixture plate, and the power cable is electrically connected to the electromagnet. The power cable is used to supply power to the electromagnet so that the electromagnet generates magnetic force to attract and fix the workpiece on the workpiece fixture plate.

[0015] By adopting the above technical solution, the combination of the electromagnet and the power cable allows the electromagnet to quickly generate magnetic force after the workpiece is placed on the fixture plate. Power is supplied through the power cable, creating additional attraction and fixation for the workpiece. This, combined with the mechanical clamping of the pressure plate, forms a dual "mechanical + magnetic" fixing effect, significantly enhancing the connection stability between the workpiece and the fixture plate. It effectively resists the vibration and impact forces generated during milling cutters, further reducing the risk of workpiece displacement or loosening. This is especially suitable for thin-walled, easily deformable, and other precision workpieces requiring higher clamping stability. Simultaneously, the magnetic fixation of the electromagnet does not require direct rigid contact with the workpiece, avoiding the potential problems associated with traditional mechanical clamping. This design prevents localized crushing or deformation of the workpiece, better protecting the surface quality of the machined workpiece. Furthermore, the cable-powered operation is convenient; it attracts the workpiece when powered on and releases it when powered off. Combined with the mechanical adjustment of the pressure plate, it can quickly clamp and position the workpiece and release it quickly when changing workpieces, significantly improving workpiece turnover efficiency in batch processing scenarios. In addition, the design of the electromagnet mounted on the workpiece fixture plate does not occupy additional milling machine processing space and does not require significant modifications to the existing clamping structure. Its strong adaptability allows it to flexibly meet the processing and fixing needs of workpieces with different magnetic materials, further expanding the applicability of this locking structure.

[0016] The second objective of this application is to provide a milling machine, including a milling machine body, a milling cutter, and the aforementioned milling machine tooling locking structure; the milling cutter is mounted on the machining end of the milling machine body and is used to process a workpiece that is clamped and locked by the milling machine tooling locking structure.

[0017] By adopting the above technical solution, this milling machine, through the integration of the aforementioned milling machine tooling locking structure, can ensure that the workpiece remains accurately positioned during the milling process by utilizing multiple stable fixing methods such as the mechanical clamping of the lead screw and pressure plate in the locking structure, and optional electromagnet adsorption. This effectively avoids workpiece vibration or displacement caused by unstable tooling fixing in traditional milling machines, significantly reducing machining errors and improving the accuracy and product quality of milling, especially suitable for high-precision machining scenarios such as precision parts and molds. At the same time, the convenient operation characteristics of the locking structure (such as the quick adjustment driven by the handle and the on / off fixing of the electromagnet) form an efficient synergy with the machining process of the milling machine body, which can reduce the time cost of workpiece clamping and replacement, improve the overall machining efficiency, and meet the needs of mass production. In addition, the pre-positioning function of the positioning part in the locking structure and the uniform distribution design of the lead screw enable the milling machine to flexibly adapt to workpieces of different shapes and specifications, expanding its machining range. The stable assembly of the locking structure and the milling machine body also ensures the structural reliability during long-term machining, reduces downtime maintenance caused by tooling loosening, and provides strong support for efficient and high-precision production in industries such as machinery manufacturing.

[0018] In summary, this application has at least the following beneficial effect: 1. Firstly, it effectively solves the problem of poor stability caused by the reliance on simple fixing methods in traditional milling machine tooling plates. By using a base plate to fix and support the workpiece tooling plate, and in conjunction with the transmission connection between the lead screw and the pressure plate, the lead screw can precisely drive the pressure plate to move linearly in the direction of approaching or moving away from the workpiece tooling plate. This ensures a tight fit between the pressure plate and the workpiece tooling plate, achieving reliable clamping and locking of the workpiece. This significantly reduces vibration and displacement of the tooling plate and workpiece during milling, thereby reducing machining errors, ensuring workpiece machining accuracy and product quality, and meeting the needs of high-precision machining scenarios such as precision parts. At the same time, the clamping and locking method achieved by the lead screw transmission is convenient to operate. The workpiece can be fixed and released without complicated operations, which helps to improve the operating efficiency in the milling process. Moreover, the overall structure is simple, the mechanical transmission is reliable, and it can be stably adapted to the milling machine's machining conditions for a long time, providing strong support for efficient production in industries such as machinery manufacturing and mold processing.

[0019] 2. By integrating the aforementioned milling machine tooling locking structure, this milling machine utilizes multiple stable fixing methods, including the mechanical clamping of the lead screw and pressure plate within the locking structure, and optional electromagnet adsorption, to ensure that the workpiece maintains precise positioning throughout the milling process. This effectively avoids workpiece vibration or displacement caused by unstable tooling fixing in traditional milling machines, significantly reducing machining errors and improving milling accuracy and product quality. It is particularly suitable for high-precision machining scenarios such as precision parts and molds. Simultaneously, the convenient operation characteristics of the locking structure (such as quick adjustment via handle drive and on / off fixing via electromagnet) synergize efficiently with the milling machine's machining process, reducing the time cost of workpiece clamping and replacement, improving overall machining efficiency, and meeting the needs of mass production. Furthermore, the pre-positioning function of the positioning part in the locking structure and the uniform distribution design of the lead screw allow the milling machine to flexibly adapt to workpieces of different shapes and specifications, expanding its machining range. The stable assembly of the locking structure and the milling machine body also ensures structural reliability during long-term machining, reducing downtime for maintenance due to tooling loosening, and providing strong support for efficient and high-precision production in industries such as machinery manufacturing. Attached Figure Description

[0020] Figure 1 This is a milling machine tooling plate locking structure and a structural diagram of the milling machine; Figure 2 This is a schematic diagram showing the position of the electromagnet.

[0021] Figure Labels 1. Base plate; 2. Workpiece fixture plate; 3. Lead screw; 4. Pressure plate; 5. Handle; 6. Positioning part; 7. Electromagnet; 8. Power cable; 9. Milling machine body; 10. Milling cutter. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0023] This application mainly uses a handle to drive a lead screw to press the pressure plate against the tooling plate, thereby achieving stable locking of the tooling plate and improving the machining accuracy of the workpiece. The following is a further detailed description of this application.

[0024] Example 1 The milling machine tooling plate locking structure provided in this application includes a base plate 1, a workpiece tooling plate 2, a lead screw 3, and a pressure plate 4. The workpiece tooling plate 2 is fixedly mounted on the base plate 1, and several lead screws 3 are also installed on the base plate 1. The lead screws 3 are connected to the pressure plate 4 for transmission and can drive the pressure plate 4 to move linearly in the direction of approaching or moving away from the workpiece tooling plate 2. The workpiece is clamped and locked by the cooperation between the pressure plate 4 and the workpiece tooling plate 2. This can stably fix the tooling plate and avoid vibration or displacement of the tooling plate during processing, thereby improving the machining accuracy of the workpiece.

[0025] Specifically, refer to Figures 1-2 The base plate 1 is the fundamental supporting component of the entire structure. It can be made of metal, such as steel plate, which has good strength and stability. The shape of the base plate 1 can be designed according to actual needs, and a rectangle is common. Its surface should be as flat as possible to ensure the installation accuracy of components such as the workpiece tooling plate 2 and the lead screw 3. In some special cases, the base plate 1 can also be made of alloy material to reduce weight while ensuring strength.

[0026] The workpiece fixture plate 2 is used to support the workpiece and workpiece clamps. It is fixed to the base plate 1, and the connection between the workpiece fixture plate and the base plate 1 can be a bolt connection, which facilitates the disassembly and replacement of the fixture plate. The surface of the workpiece fixture plate 2 also needs to be kept flat to ensure the stability of the workpiece placement. Its material can be the same as that of the base plate 1, or other suitable materials, such as aluminum alloy, can be selected according to the characteristics of the workpiece to reduce the weight of the fixture plate.

[0027] The lead screw 3 is a key component for realizing the movement of the pressure plate 4. It can be mounted to the base plate 1 via a bearing housing, ensuring the lead screw 3 can rotate freely. The surface of the lead screw 3 is usually threaded for transmission connection with the pressure plate 4. The lead screw 3 can use a trapezoidal thread, which has good transmission efficiency and self-locking performance. In some applications requiring higher precision, a ball screw 3 can also be used, which has even higher transmission efficiency and smoother movement.

[0028] The pressure plate 4 is used in conjunction with the workpiece fixture plate 2 to clamp and lock the workpiece. Its transmission connection with the lead screw 3 can be achieved through a threaded connection, converting the rotational motion of the lead screw 3 into the linear motion of the pressure plate 4. The pressure plate 4 can be rectangular in shape, and its surface in contact with the workpiece fixture plate 2 should be flat and smooth to ensure uniform clamping force. The pressure plate 4 can be made of steel, possessing sufficient strength to withstand the clamping force.

[0029] The combination logic of these components is as follows: by rotating the lead screw 3, the pressure plate 4 moves linearly along the axis of the lead screw 3 through the transmission connection between the lead screw 3 and the pressure plate 4. When the pressure plate 4 approaches the workpiece fixture plate 2, it can clamp and lock the workpiece placed on the workpiece fixture plate 2; when it is necessary to remove the workpiece, the lead screw 3 is rotated in the opposite direction, causing the pressure plate 4 to move away from the workpiece fixture plate 2, thus releasing the lock on the workpiece. This combination method can effectively achieve stable clamping of the workpiece and improve machining accuracy.

[0030] Specifically, a handle 5 is connected to the end of the lead screw 3. The handle 5 is used to drive the lead screw 3 to rotate, thereby moving the pressure plate 4. The handle 5 can be designed as a circular handwheel for easy gripping and force application by the operator. Its surface can be treated with an anti-slip finish, such as knurling or a rubber sleeve, to increase grip friction. The connection between the handle 5 and the lead screw 3 can be a key connection, ensuring that the handle 5 can reliably drive the lead screw 3 to rotate. In some highly automated applications, a motor or other power device can be used to replace the handle 5 in driving the lead screw 3, improving operational efficiency and accuracy.

[0031] Several lead screws 3 are evenly distributed, and the axis of each lead screw 3 is perpendicular to the surface of the workpiece fixture plate 2. This distribution method can make the clamping force applied by the pressure plate 4 to the workpiece fixture plate 2 more uniform at various positions, avoiding uneven local force. For example, when four lead screws 3 are set, they can be installed near the four corners of the workpiece fixture plate 2 to form a stable clamping structure.

[0032] The workpiece fixture plate 2 is equipped with a positioning part 6, which is a positioning groove or a positioning boss, used for pre-positioning the workpiece. The positioning groove can be a rectangular groove or a circular groove, and its size and shape are designed according to the characteristics of the workpiece. The positioning boss can be a cylindrical or square column, and its height and diameter also need to be determined according to the actual situation. With the setting of the positioning part 6, the workpiece can be placed on the workpiece fixture plate 2 quickly and accurately, improving the processing efficiency and accuracy.

[0033] The structure also includes an electromagnet 7 and a power cable 8. The electromagnet 7 is mounted on the workpiece fixture plate 2, and the power cable 8 is electrically connected to the electromagnet 7. The power cable 8 supplies power to the electromagnet 7, causing it to generate a magnetic force to attract and fix the workpiece to the workpiece fixture plate 2. The electromagnet 7 can be a DC electromagnet with strong attraction force. The power cable 8 should have good insulation properties to ensure safe power supply. When it is necessary to fix the workpiece, power is supplied to the electromagnet 7 through the power cable 8, causing the electromagnet 7 to generate a magnetic force to attract the workpiece; when it is necessary to remove the workpiece, the power is cut off, the electromagnet 7 loses its magnetic force, and the workpiece can be easily removed.

[0034] The implementation principle of this embodiment is as follows: the handle 5 drives the lead screw 3 to rotate, causing the pressure plate 4 to press against the workpiece fixture plate 2, thereby achieving clamping and locking of the workpiece. Simultaneously, the electromagnet 7 is used to attract the workpiece, further improving its stability. This structure is simple to operate, effectively avoids vibration and displacement of the fixture plate during processing, significantly improves the machining accuracy of the workpiece, and represents a significant improvement over traditional fixture plate fixing methods, meeting the demands of high-precision machining.

[0035] Example 2 The difference between this embodiment and the above embodiments is that this embodiment provides a milling machine, including a milling machine body 9, a milling cutter 10, and the aforementioned milling machine tooling locking structure. The milling cutter 10 is mounted on the machining end of the milling machine body 9 and is used to machine the workpiece clamped and locked by the milling machine tooling locking structure.

[0036] Specifically, the milling machine body 9 is the core component of the entire milling machine, providing power and support for the movement of the milling cutter 10. The milling machine body 9 can adopt a horizontal or vertical structure, depending on different machining requirements. Its interior typically contains components such as a motor and a transmission system, used to drive the rotation and movement of the milling cutter 10.

[0037] The milling cutter 10 is a key tool for milling operations. Its shape and size are selected according to the shape and requirements of the workpiece being machined; common types include end mills and face mills. The milling cutter 10 can be made of high-speed steel or cemented carbide, possessing good cutting performance and wear resistance.

[0038] The implementation principle of this embodiment is as follows: the workpiece is stably fixed in the working position by the milling machine tool plate locking structure, and then the milling machine body 9 drives the milling cutter 10 to process the workpiece. Since the tool plate is stably locked, vibration and displacement during the processing are reduced, allowing the milling cutter 10 to process the workpiece more accurately, improving processing accuracy and product quality. Compared with traditional milling machines, there is a significant improvement in processing accuracy and efficiency.

[0039] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A locking structure for a milling machine tooling plate, characterized in that, Includes a base plate (1), on which a workpiece fixture plate (2) is fixedly mounted; several lead screws (3) are also mounted on the base plate (1), and pressure plates (4) are mounted on the lead screws (3). The lead screws (3) and the pressure plates (4) are connected in a transmission manner to drive the pressure plates (4) to move linearly in a direction close to or away from the workpiece fixture plate (2). The workpiece is clamped and locked by the cooperation between the pressure plates (4) and the workpiece fixture plate (2).

2. The milling machine tooling plate locking structure according to claim 1, characterized in that, The end of the lead screw (3) is connected to a handle (5), which is used to drive the lead screw (3) to rotate so as to drive the pressure plate (4) to move.

3. The milling machine tooling plate locking structure according to claim 1, characterized in that, Several lead screws (3) are evenly distributed, and the axis of each lead screw (3) is perpendicular to the surface of the workpiece tooling plate (2).

4. The milling machine tooling plate locking structure according to claim 1, characterized in that, The workpiece tooling plate (2) is provided with a positioning part (6), which is a positioning groove or a positioning boss, used to pre-position the workpiece.

5. The milling machine tooling plate locking structure according to claim 1, characterized in that, It also includes an electromagnet (7) and a power cable (8); the electromagnet (7) is disposed on the workpiece fixture plate (2), and the power cable (8) is electrically connected to the electromagnet (7). The power cable (8) is used to supply power to the electromagnet (7) so that the electromagnet (7) generates magnetic force to attract and fix the workpiece on the workpiece fixture plate (2).

6. A milling machine, characterized in that, The milling machine body (9), the milling cutter (10), and the milling machine tooling locking structure as described in claim 1 are included; the milling cutter (10) is installed on the machining end of the milling machine body (9) and is used to process the workpiece clamped and locked by the milling machine tooling locking structure.

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