Interchangeable tooling fixture and CNC machine

Abstract

The utility model belongs to numerical control machine tool fixture technical field discloses an interchangeable tooling fixture and numerical control machine tool, including base, mould core subassembly, clamping drive assembly and guide component, has realized mould core piece's quick replacement and multi -work piece simultaneous chucking, can realize a plurality of work pieces of processing, has reduced work piece's chucking and taking -off time significantly, has shortened equipment downtime interval, has improved processing continuity and production efficiency. The setting of guide component has further guaranteed the stability of pressing plate movement and the clamping accuracy, thereby ensuring the stability of work piece processing and the consistency of product size.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool fixture technology, and in particular to an interchangeable tooling fixture and a CNC machine tool. Background Technology

[0002] In the CNC machining process of small hardware parts, in order to ensure the machining accuracy and surface quality of the products, it is usually necessary for the operator to manually place and fix the workpiece to be processed on the tooling fixture.

[0003] Existing tooling fixtures typically clamp only a single workpiece at a time. After processing, the machine must be stopped to remove the finished product, and then a new workpiece must be manually clamped. This results in long downtime, a high proportion of non-processing time, and low overall processing efficiency. For small hardware parts that are small in size, numerous, frequently produced, and complex in shape, the requirements for positioning accuracy and the stability of repeated clamping are high. Frequent manual clamping not only increases labor intensity and production costs but also easily leads to the accumulation of positioning errors, affecting processing accuracy and product consistency. Furthermore, it is more prone to problems such as insecure clamping or low clamping efficiency, thus failing to meet the demands for high-efficiency and high-stability production. Utility Model Content

[0004] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. The purpose of this invention is to provide an interchangeable tooling fixture and CNC machine tool to reduce workpiece clamping and unclamping time, thereby reducing equipment downtime, improving processing efficiency, and ensuring the stability of workpiece processing accuracy and product consistency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An interchangeable tooling fixture, comprising:

[0007] Base;

[0008] A mold core assembly includes a mold core mounting base, multiple mold core blocks, and positioning clamping components. The mold core mounting base is fixed to a base, and its side facing away from the base is a first end face. A mounting groove is formed at the junction of the first end face and an adjacent second end face. Each mold core block has multiple positioning grooves along its length that match the shape of the workpiece to be processed. These grooves are located at the junction of the third end face and an adjacent fourth end face of the mold core block. The mold core blocks are detachably mounted in the mounting grooves. The positioning clamping components are disposed on the inner wall of the mounting grooves and are used to position and clamp the mold core blocks so that the third end face of the mold core block faces the first end face of the mold core mounting base, and its positioning grooves face the second end face of the mold core mounting base.

[0009] A clamping drive assembly includes a drive assembly and a pressure plate. The pressure plate is disposed on the base and is parallel to the second end face of the mold core mounting seat. The drive assembly is mounted on the base, and the output end of the drive assembly is connected to the pressure plate to drive it to reciprocate in a direction perpendicular to the second end face of the mounting groove in order to clamp or release the workpiece.

[0010] A guide component is disposed on the mold core mounting base, and its guide end is slidably connected to the pressure plate to limit the movement path of the pressure plate.

[0011] In some alternative embodiments, a plurality of the mold core blocks are placed side by side in sequence along a direction perpendicular to the second end face of the mounting groove.

[0012] In some alternative embodiments, a flexible pad is provided on the side of the pressure plate facing the mold core block and / or on the fourth end face of the mold core block.

[0013] In some alternative embodiments, the positioning clamping component includes a positioning pin and a clamping component. The positioning pin is provided on either the bottom wall of the mounting groove or the bottom of the mold core block along its height direction, and a corresponding positioning hole is provided on the other side. The positioning pin and the positioning hole are inserted into each other. The clamping component is provided on the side wall of the mounting groove for clamping the mold core block.

[0014] In some alternative embodiments, the number of guide components is at least two, which are spaced apart on both sides of the mounting groove along the length direction of the second end face of the mold core mounting base.

[0015] In some alternative embodiments, the guiding component is a guide post, and a guide channel is provided in the mold core mounting base along a direction perpendicular to its second end face. The guide post passes through the guide channel and is slidably connected to the pressure plate.

[0016] In some alternative embodiments, the guide assembly further includes a dustproof element fitted onto the guide post to prevent machining debris from entering the guide channel.

[0017] In some alternative embodiments, at least two sets of the drive components are provided, fixed on the base, located on the side of the pressure plate away from the mold core mounting seat, and spaced apart along a direction parallel to the second end face of the mounting groove. The output end of the drive component is connected to the pressure plate and can simultaneously drive the pressure plate to move.

[0018] In some optional embodiments, the driving assembly includes a driving component, a driving component mounting base, and a buffer component. The driving component is disposed on the driving component mounting base, which is disposed on the base for fixing the position of the driving component. The output end of the driving component is a telescopic guide rod, which is detachably and fixedly connected to the pressure plate. The telescopic path of the telescopic guide rod is parallel to the moving path of the pressure plate. The buffer component is disposed at the output end of the driving component for mitigating the impact load during the movement of the pressure plate.

[0019] A CNC machine tool includes an interchangeable tooling fixture and a worktable as described in any of the above claims, wherein the base is detachably mounted on the worktable, and the drive assembly is electrically connected to the worktable for controlling the clamping plate to hold or release the workpiece.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides an interchangeable tooling fixture and CNC machine tool, including a base, a mold core assembly, a clamping drive assembly, and a guide assembly. Operators can customize and process corresponding mold core blocks according to different workpiece shapes. Each mold core block can assemble multiple workpieces to be processed, and multiple mold core blocks can be used alternately. In use, first, the mold core block equipped with the workpiece to be processed is placed in the mounting slot of the mold core mounting base. It is then positioned and clamped by the positioning clamping component, with the positioning slot of the mold core block facing the pressure plate. Subsequently, the drive assembly drives the pressure plate to move in the direction close to the mold core block, so that the workpiece is clamped and fixed by the pressure plate. After clamping, the CNC machine tool is started to process the workpieces on the mold core block sequentially. During workpiece processing, the operator can simultaneously prepare another mold core block for workpiece assembly. After the first set of workpieces is processed, the drive assembly drives the pressure plate to move away from the mold core block, releasing the workpiece. The operator can then remove the processed mold core block and replace it with a mold core block equipped with a new workpiece, repeating the above steps for continuous processing. It enables rapid replacement of mold core blocks and simultaneous clamping of multiple workpieces, allowing for the processing of multiple workpieces at once. This significantly reduces workpiece clamping and unloading time, shortens equipment downtime, and improves processing continuity and production efficiency. The guide assembly further ensures the smoothness of the pressure plate movement and clamping accuracy, thereby ensuring the stability of workpiece processing and the consistency of product dimensions. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the interchangeable tooling fixture in this utility model.

[0023] In the picture:

[0024] 1. Base; 2. Mold core assembly; 21. Mold core mounting base; 22. Mold core block; 23. Positioning groove; 3. Drive assembly; 31. Drive component; 311. Telescopic guide rod; 32. Drive component mounting base; 4. Pressure plate; 5. Guide assembly. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0027] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For example, a direct connection refers to two parts or components being connected together without an intermediate component, while an indirect connection refers to two parts or components each being connected to at least one intermediate component, with the connection achieved through the intermediate component. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0029] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0030] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0031] In this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, 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. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" of another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" of the first feature and the second feature include the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0032] Please refer to Figure 1As shown, this embodiment provides an interchangeable tooling fixture, including a base 1, a mold core assembly 2, a clamping drive assembly, and a guide assembly 5. The mold core assembly 2 includes a mold core mounting base 21, multiple mold core blocks 22, and positioning clamping components. The mold core mounting base 21 is fixed to the base 1, and its side facing away from the base 1 is a first end face. A mounting groove is formed at the junction of the first end face and the adjacent second end face. Each mold core block 22 has multiple positioning grooves 23 along its length that match the shape of the workpiece to be processed. The positioning grooves 23 are located at the junction of the third end face and the adjacent fourth end face of the mold core block 22. The mold core block 22 is detachably installed in the mounting groove, and the positioning clamping components are provided in the mounting groove. The inner wall of the mounting groove is used to position and clamp the mold core block 22 so that the third end face of the mold core block 22 faces the first end face of the mold core mounting base 21, and its positioning groove 23 faces the second end face of the mold core mounting base 21; the clamping drive assembly includes a drive assembly 3 and a pressure plate 4. The pressure plate 4 is set on the base 1 and is arranged parallel to the second end face of the mold core mounting base 21. The drive assembly 3 is mounted on the base 1, and the output end of the drive assembly 3 is connected to the pressure plate 4 to drive it to reciprocate in a direction perpendicular to the second end face of the mounting groove in order to clamp or release the workpiece; the guide assembly 5 is set on the mold core mounting base 21, and its guide end is slidably connected to the pressure plate 4 to limit the movement path of the pressure plate 4.

[0033] In use, operators can customize and process corresponding mold core blocks 22 according to different workpiece shapes. Each mold core block 22 can be equipped with multiple workpieces to be processed, and multiple mold core blocks 22 can be used alternately. In use, first, the mold core block 22 equipped with the workpiece to be processed is placed in the mounting groove of the mold core mounting base 21, and positioned and clamped by the positioning clamping component, so that the positioning groove 23 of the mold core block 22 faces the pressure plate 4; then, the drive assembly 3 drives the pressure plate 4 to move in the direction close to the mold core block 22, so that the workpiece is clamped and fixed by the pressure plate 4; after clamping is completed, the CNC machine tool is started to process the workpieces on the mold core block 22 in sequence.

[0034] During the workpiece processing, the operator can simultaneously prepare another mold core block 22 for workpiece assembly. After the first set of workpieces is processed, the drive assembly 3 drives the pressure plate 4 to move away from the mold core block 22 to release the workpiece. The operator can then remove the processed mold core block 22 and replace it with a mold core block 22 with a new workpiece assembled on it, repeating the above steps for continuous processing.

[0035] Through the above structural design, the quick replacement of the mold core block 22 and the simultaneous clamping of multiple workpieces are realized, enabling the processing of multiple workpieces at once. This significantly reduces the clamping and loading time of workpieces, shortens equipment downtime, and improves processing continuity and production efficiency. The guide assembly 5 further ensures the smoothness of the movement and clamping accuracy of the pressure plate 4, thereby ensuring the stability of workpiece processing and the consistency of product dimensions.

[0036] Furthermore, the outer dimensions of the mold core block 22 are matched with the inner dimensions of the mounting groove, with a small fitting gap reserved between them, so that the mold core block 22 can be smoothly installed and accurately positioned and reliably fixed by the positioning clamping parts, thereby ensuring the positioning accuracy and assembly stability of the mold core block 22 after installation.

[0037] It should be noted that the mold core block 22 is made of high-precision S136 mold steel, with moderate hardness and smooth surface. It has a high-precision positioning groove 23 that is consistent with the shape of the workpiece. The positioning groove 23 can be customized according to the size of the workpiece and is used to accurately place and position small hardware parts, thereby ensuring that the processing benchmark of each workpiece is uniform, the position is accurate and the processing quality is stable.

[0038] In some alternative embodiments, the operator can place multiple mold core blocks 22 side by side along the direction perpendicular to the second end face of the mounting groove according to the shape of the workpiece, so that the workpiece is arranged in a matrix. The pressure plate 4 can press all the workpieces on the mold core blocks 22 at the same time in one action, so as to realize the synchronous clamping and processing of multiple workpieces, further effectively shortening the clamping time and non-processing time of the equipment, and improving the overall production cycle.

[0039] Furthermore, the mold core mounting base 21 is detachably fixed to the base 1, allowing for replacement according to the number and arrangement of the mold core blocks 22 to accommodate workpiece clamping requirements of different batches or sizes, thus improving clamping flexibility and versatility. The mold core mounting base 21 can be made of medium carbon steel, and through quenching and tempering treatment, its hardness is made within the range of HB220-250, thereby possessing both high strength and toughness, capable of withstanding the load when clamping and positioning workpieces, while being resistant to deformation or breakage.

[0040] During operation, the pressure plate 4 applies pressure directly to the workpiece or the mold core block 22 via the drive assembly 3. However, due to minor unevenness on the surface of the mold core block 22 or the workpiece, or local height differences when multiple mold core blocks 22 are clamped side by side, and because both the pressure plate 4 and the mold core block 22 are made of rigid materials, the rigid pressure plate 4 directly contacts the workpiece surface, which may leave indentations or scratches. To avoid damaging the workpiece, in this embodiment, a flexible gasket is provided on the side of the pressure plate 4 facing the mold core block 22 and / or on the fourth end face of the mold core block 22. The flexible gasket has a certain elastic deformation capacity. When the pressure plate 4 contacts the workpiece and when the side-by-side mold blocks contact each other, the gasket can be slightly compressed locally, automatically adapting to the slight differences on the workpiece surface, preventing the workpiece from deforming, slipping, or being damaged due to instantaneous load, and increasing the friction between the workpiece and the pressure plate 4 to prevent the workpiece from loosening during processing. The flexible gasket can be made of polyurethane elastomer film, which is a highly elastic and wear-resistant flexible material with certain buffering and shock absorption effects.

[0041] Since the base 1 serves as the fundamental load-bearing component of the entire fixture, it needs to simultaneously support the mold core mounting base 21, the drive assembly 3, and the weight of the workpiece. Therefore, the base 1 can be made of aluminum alloy plate with a thickness of 20mm to 30mm. This effectively improves the bending and torsional rigidity of the base 1, preventing deformation or vibration during clamping or processing, thereby maintaining the relative positional stability of each component and ensuring clamping and processing accuracy. To further improve the durability of the base 1, anodizing treatment is performed on the surface of the base 1, with an oxide film thickness ≥10μm, giving it good wear resistance and corrosion resistance, and providing a flat and stable mounting platform for other components.

[0042] Specifically, the positioning and clamping components include positioning pins and clamping elements. A positioning pin is provided along its height direction on either the bottom wall of the mounting groove or the bottom of the mold core block 22, and a corresponding positioning hole is provided on the other. The positioning pin and the positioning hole are inserted into each other. The clamping element is located on the side wall of the mounting groove and is used to clamp the mold core block 22. The insertion and engagement of the positioning pin and the positioning hole enable the mold core block 22 to achieve rapid and precise positioning within the mounting groove, ensuring the consistency and repeatability of the mold core block 22's position during each assembly. The clamping element, located on the side wall of the mounting groove, applies a lateral clamping force to the mold core block 22, preventing displacement or loosening during clamping or processing. This separation of positioning and clamping functions allows the mold core block 22 to maintain reliable locking while achieving high-precision positioning, improving installation stability and facilitating rapid replacement of the mold core block 22, thus ensuring the positional accuracy of the mold core block 22 during processing. It should be noted that the clamping element can be, but is not limited to, spring collets or snap-fit ​​devices; no specific limitations are specified here.

[0043] In some optional embodiments, the number of guide components 5 is at least two, which are spaced apart on both sides of the mounting groove along the length direction of the second end face of the mold core mounting base 21 to form double parallel guide rails. When the pressure plate 4 moves, it provides stable double-sided guide constraints and can form symmetrical guide support during the clamping and releasing process of the pressure plate 4, improve the stability of movement and clamping accuracy, prevent the pressure plate 4 from tilting or shifting, and ensure that the pressure plate 4 and the mold core block 22 remain parallel, thereby achieving uniform clamping of multiple workpieces.

[0044] Specifically, the guide component 5 is a guide post. A guide channel is formed inside the mold core mounting base 21 along a direction perpendicular to its second end face. The guide post passes through the guide channel and is slidably connected to the pressure plate 4. The guide post forms a linear guide constraint within the guide channel, more effectively limiting the swaying, tilting, or wobbling of the pressure plate 4; ensuring that the pressure plate 4 remains parallel to the surface of the mold core block 22 when clamping the workpiece, and ensuring uniform force on each workpiece. Furthermore, the guide post 5 can be a circular guide post, which cooperates with the guide channel. The contact surface is regular, the frictional resistance is small, the sliding is smooth, and the wear can be reduced. The circular guide post is made of 304 stainless steel with a diameter of 8mm to 12mm, with a smooth surface and high straightness. It is connected to the guide channel and the pressure plate 4 through an interference fit, so that the pressure plate 4 slides smoothly along the guide post, with high motion accuracy, low friction, and structural stability.

[0045] During CNC machining or parts milling, metal shavings, dust, coolant splashes, oil particles, or wear particles are generated around the fixture. The guide post is a high-precision mating part, and the gap between the guide post and the guide channel is usually very small. Once these foreign objects enter the guide channel, they will block the guide gap, hinder the guide, or accelerate the wear of the guide surface, resulting in a decrease in guide accuracy. In order to prevent the above problems from occurring, in this embodiment, the guide assembly 5 also includes a dustproof component. The dustproof component is sleeved on the guide post to prevent machining debris from entering the guide channel, avoid obstruction or wear between the guide post and the guide channel, thereby maintaining the smooth movement and guide accuracy of the pressure plate 4. This not only improves the stability and service life of the equipment, but also reduces the maintenance frequency and improves the overall machining reliability.

[0046] The dustproof component can be a dust cover, such as a corrugated telescopic dust cover, which is made of flexible material and is in the shape of a telescopic corrugated tube. The dust cover is sleeved on the outside of the guide column and is set between the pressure plate 4 and the mold core mounting seat 21. One end is sealed to the pressure plate 4 and the other end is sealed to the mold core mounting seat 21. When the guide column moves, the dust cover expands and contracts axially, always covering the entire exposed section of the guide column. When it contracts, it folds into a corrugated shape and when it extends, it straightens out, without interfering with the movement of the guide column, and can effectively achieve dynamic sealing.

[0047] In addition, the dustproof component can also use an elastic sealing sleeve. An elastic sealing sleeve is set at both ends of the outer opening of the guide channel. The guide post passes through the sealing ring, and the sealing ring forms a slight pre-pressure contact with it to prevent machining debris from entering.

[0048] In other embodiments, the guide component may also be a guide rail, which is placed perpendicular to the second end face of the mounting base 21, and the pressure block 4 slides with the guide rail.

[0049] In some optional embodiments, at least two sets of drive components 3 are provided, fixed on the base 1, located on the side of the pressure plate 4 away from the mold core mounting seat 21, and spaced apart along a direction parallel to the second end face of the mounting groove. The output end of the drive component 3 is connected to the pressure plate 4 and can drive the pressure plate 4 to move simultaneously. By driving the pressure plate 4 at multiple points, the pressure plate 4 is evenly stressed during movement, preventing warping or uneven clamping force at both ends of the pressure plate 4 due to single-point drive, thereby ensuring uniform clamping force on the workpiece at different positions. At the same time, the synchronous action of multiple sets of drive components 3 can effectively control the parallelism of the pressure plate 4, keeping the pressure plate 4 stable when pressing down, and avoiding processing errors caused by uneven loading or tilting.

[0050] Specifically, the drive assembly 3 includes a drive component 31, a drive component mounting base 32, and a buffer component. The drive component 31 is mounted on the drive component mounting base 32, which is mounted on the base 1 to fix the position of the drive component 31, ensuring that the drive component 31 maintains a stable posture during operation and avoiding machining errors caused by uneven load or tilting. The output end of the drive component 31 is a telescopic guide rod 311, which is detachably and fixedly connected to the pressure plate 4. The telescopic path of the telescopic guide rod 311 is parallel to the movement path of the pressure plate 4, so that the driving force is consistent with the movement direction of the pressure plate 4. This allows the driving force to be directly and effectively transmitted to the pressure plate 4, preventing lateral forces or tilting moments caused by angular deviations and avoiding situations where one side is under great force and the other side is not clamped tightly. This ensures that all parts of the pressure plate 4 clamp the workpiece stably and synchronously. The telescopic tool bar and the pressure plate 4 can be detachably and fixedly connected by bolts. The buffer component is located at the output end of the drive component 31 and is used to reduce the impact load during the movement of the pressure plate 4. The buffer component can be, but is not limited to, a pneumatic buffer, which is not specifically limited here.

[0051] It should be noted that the drive component 31 will generate significant reaction force and vibration impact during the extension and retraction process. The drive component mounting base 32 can be made of an aluminum alloy block with a thickness of 30mm to 40mm to provide high structural rigidity and resistance to deformation. The drive component mounting base 32 can be fixedly connected to the base 1 with bolts to provide reliable axial preload and ensure a tight fit between the drive component mounting base 32 and the base 1. The drive component 31 can be, but is not limited to, a TN dual-axis cylinder. The TN dual-axis cylinder typically has two coaxial drive rods or two parallel output rods, which can provide a more stable torque distribution during pushing or pulling, ensuring that all parts of the pressure plate 4 are synchronized and stable during clamping.

[0052] This embodiment also provides a CNC machine tool, including interchangeable tooling fixtures and worktables as described in any of the above embodiments. The base 1 is detachably mounted on the worktable, and the drive assembly 3 is electrically connected to the worktable to control the action of the pressure plate 4 to clamp or release the workpiece.

[0053] By installing interchangeable tooling fixtures on the CNC machine tool's worktable, rapid replacement of the mold core block 22 and simultaneous clamping of multiple workpieces are achieved. This allows for the processing of multiple workpieces at once, significantly reducing workpiece clamping and unloading time, shortening equipment downtime, and improving processing continuity and production efficiency. The guide assembly 5 further ensures the smoothness of the pressure plate 4's movement and clamping accuracy, thereby ensuring the stability of workpiece processing and the consistency of product dimensions.

[0054] The specific operating method is as follows: Before processing, the operator performs a visual inspection of the workpiece to be processed, removing any workpieces with obvious deformation, burrs, or scratches. Simultaneously, the operator checks the positioning groove 23 of the mold core block 22. If residual processing debris is found, it can be cleaned using compressed air or a soft brush. Then, the qualified workpiece to be processed is assembled into the positioning groove 23 of the mold core block 22. Next, the assembled mold core blocks 22 are placed side-by-side in the mounting groove according to processing requirements, perpendicular to the second end face of the mounting groove. The positioning clamping components in the mounting groove quickly position and clamp them. The operator checks whether the installation is in place; if not, it needs to be readjusted. Subsequently, the clamping drive assembly 3 is activated by controlling the worktable. The pressure plate 4 is moved in a direction perpendicular to the second end face of the mounting groove to press the workpiece onto the mold core block 22. The CNC machine tool processes multiple workpieces on the mold core block 22 simultaneously according to the preset processing program. During the processing, the operator can continue to assemble the workpieces to be processed onto the idle mold core block 22 to prepare for the next batch of processing. When a group of processed workpieces is completed, the clamping drive assembly 3 is controlled to move the pressure plate 4 in a vertical direction to release the mold core block 22. The processed mold core block 22 is taken out and placed in the designated position, and the pre-assembled workpiece mold core block 22 to be processed is placed into the mold core mounting seat 21. The above steps are repeated for clamping and processing to achieve rapid workpiece replacement and cyclic processing.

[0055] By comparing the workpiece machining experiments of CNC machine tools equipped with the aforementioned interchangeable tooling fixtures with those equipped with traditional tooling fixtures, it can be concluded that interchangeable tooling fixtures can significantly improve machining efficiency and equipment capacity, enabling simultaneous machining of multiple parts and shortening equipment downtime, thereby increasing daily output by 3-5 times. Simultaneously, interchangeable fixtures can reduce the number of clamping operations and labor intensity for operators, reducing workload by 40%-60%. In terms of production costs, due to the reduced frequency of equipment maintenance and the ability for one person to manage multiple machines, overall costs are reduced by 30%-50%. Machining quality is significantly improved, with positioning accuracy increased to ±0.02mm, no surface damage, dimensional compliance rate exceeding 99%, and surface roughness Ra≤1.6μm. Furthermore, through the rapid replacement of the mold core block 22, the clamping time is ≤30 seconds / time, eliminating the need for repeated calibration, increasing clamping efficiency by 10-16 times, and increasing the effective machining time ratio by 30%-40%, thus fully demonstrating the advantages of interchangeable tooling fixtures in high-efficiency, low-cost, and high-precision machining.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An interchangeable tooling fixture, characterized in that, include: Base (1); The mold core assembly (2) includes a mold core mounting base (21), multiple mold core blocks (22), and positioning clamping components. The mold core mounting base (21) is fixed on the base (1), and its side away from the base (1) is a first end face. An installation groove is provided at the junction of the first end face and the adjacent second end face. Each mold core block (22) has multiple positioning grooves (23) along its length direction that match the shape of the workpiece to be processed. These grooves are located at the junction of the third end face and the adjacent fourth end face of the mold core block (22). The mold core block (22) is detachably installed in the installation groove. The positioning clamping components are provided on the inner wall of the installation groove for positioning and clamping the mold core block (22) so that the third end face of the mold core block (22) faces the first end face of the mold core mounting base (21), and its positioning grooves (23) face the second end face of the mold core mounting base (21). The clamping drive assembly includes a drive assembly (3) and a pressure plate (4). The pressure plate (4) is disposed on the base (1) and is disposed parallel to the second end face of the mold core mounting base (21). The drive assembly (3) is mounted on the base (1). The output end of the drive assembly (3) is connected to the pressure plate (4) and is used to drive it to reciprocate along a direction perpendicular to the second end face of the mounting groove in order to clamp or release the workpiece. A guide component (5) is disposed on the mold core mounting base (21), and its guide end is slidably connected to the pressure plate (4) to limit the movement path of the pressure plate (4).

2. The interchangeable tooling fixture according to claim 1, characterized in that, Multiple core blocks (22) are placed side by side in sequence along a direction perpendicular to the second end face of the mounting groove.

3. The interchangeable tooling fixture according to claim 2, characterized in that, A flexible pad is provided on the side of the pressure plate (4) facing the mold core block (22) and / or on the fourth end face of the mold core block (22).

4. The interchangeable tooling fixture according to claim 1, characterized in that, The positioning clamping component includes a positioning pin and a clamping component. The positioning pin is provided on either the bottom wall of the mounting groove or the bottom of the mold core block (22) along its height direction, and a corresponding positioning hole is provided on the other. The positioning pin and the positioning hole are inserted into each other. The clamping component is provided on the side wall of the mounting groove for clamping the mold core block (22).

5. The interchangeable tooling fixture according to claim 1, characterized in that, The number of guide components (5) is at least two, and they are spaced apart on both sides of the mounting groove along the length direction of the second end face of the mold core mounting base (21).

6. The interchangeable tooling fixture according to claim 5, characterized in that, The guide component (5) is a guide post. The mold core mounting base (21) has a guide channel in the direction perpendicular to its second end face. The guide post passes through the guide channel and is slidably connected to the pressure plate (4).

7. The interchangeable tooling fixture according to claim 6, characterized in that, The guide assembly (5) also includes a dustproof component, which is sleeved on the guide post to prevent processing debris from entering the guide channel.

8. The interchangeable tooling fixture according to claim 1, characterized in that, The drive assembly (3) is provided in at least two sets, fixed on the base (1), located on the side of the pressure plate (4) away from the mold core mounting seat (21), and spaced apart along the direction parallel to the second end face of the mounting groove. The output end of the drive assembly (3) is connected to the pressure plate (4) and can drive the pressure plate (4) to move simultaneously.

9. The interchangeable tooling fixture according to claim 8, characterized in that, The drive assembly (3) includes a drive component (31), a drive component mounting base (32), and a buffer component. The drive component (31) is mounted on the drive component mounting base (32), which is mounted on the base (1) to fix the position of the drive component (31). The output end of the drive component (31) is a telescopic guide rod (311), which is detachably and fixedly connected to the pressure plate (4). The telescopic path of the telescopic guide rod (311) is parallel to the moving path of the pressure plate (4). The buffer component is mounted on the output end of the drive component (31) to reduce the impact load during the movement of the pressure plate (4).

10. A CNC machine tool, characterized in that, Includes the interchangeable tooling fixture and worktable as described in any one of claims 1 to 9, wherein the base (1) is detachably mounted on the worktable, and the drive assembly (3) is electrically connected to the worktable for controlling the pressure plate (4) to clamp or release the workpiece.

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