An ultra-high-precision mold core batch cutting clamping jig and a method of using the same

Abstract

This application relates to the field of ultra-high precision mold core processing technology, and discloses a clamping fixture for batch cutting of ultra-high precision mold cores and its usage method. The fixture consists of a base assembly and X-axis, Y-axis, and Z-axis clamping assemblies. Through a unique three-dimensional positioning and clamping structure, it achieves precise positioning and clamping of mold cores of different sizes and types. It solves the problems of insufficient positioning accuracy, poor adaptability, and inaccurate clamping force control of traditional fixtures when batch processing ultra-high precision mold cores, thereby improving the quality and efficiency of mold core processing and meeting the requirements of high-precision microgroove cutting.

Description

Technical Field

[0001] This application relates to the field of ultra-high precision mold core processing technology, specifically a clamping fixture for batch cutting of ultra-high precision mold cores and its usage method. Background Technology

[0002] In the ultra-high precision mold core machining industry, traditional machining methods have many drawbacks. Currently, most processes involve machining individual mold cores, lacking clamping fixtures suitable for batch processing. Existing fixtures such as vises and pressure plates have simple structural designs and can only achieve basic fixing functions.

[0003] These fixtures cannot meet the high-precision positioning requirements when processing batches of mold cores. For example, it is difficult to ensure the accurate positioning and close arrangement of multiple mold cores in the X, Y, and Z directions, resulting in large deviations in the dimensions of the cut microgrooves and low positional accuracy. At the same time, traditional fixtures have poor adaptability to mold cores of different sizes and shapes. When encountering mold cores of special specifications, frequent fixture changes or complex adjustments are required, which seriously affects processing efficiency.

[0004] Furthermore, traditional clamping structures lack flexibility and precision. During clamping, it is impossible to precisely control the clamping force according to the actual situation of the mold core, which easily leads to uneven clamping force. This causes the mold core to shift or deform during processing, greatly affecting the processing quality of the mold core. Summary of the Invention

[0005] This application addresses the shortcomings of existing technologies by providing a novel clamping fixture and its usage method suitable for batch cutting of ultra-high precision mold cores. It solves the problems of insufficient positioning accuracy, poor adaptability to different mold cores, and inaccurate clamping force control of traditional fixtures in batch processing, thereby improving the quality and efficiency of mold core processing.

[0006] This application is achieved through the following technical solution:

[0007] A clamping fixture for batch cutting of ultra-high precision mold cores includes a base assembly, an X-axis clamping assembly, a Y-axis clamping assembly and a Z-axis clamping assembly;

[0008] The base assembly includes a suction cup fixture base and a product base. The product base is set on the suction cup fixture base. The suction cup fixture base is used to support the X-axis clamping assembly, and the product base is used to support the X-axis clamping assembly and guide the Z-axis clamping assembly. The product base is provided with a sliding groove for stacking products.

[0009] The X-axis clamping assembly includes a connecting rod with multiple rotating blocks rotatably mounted on the connecting rod. The rotating blocks have a U-shaped structure, and the two open ends of the blocks are used to push multiple product seat slides to fit tightly together.

[0010] The Y-axis clamping assembly includes multiple clamping plates, which are disposed on the side of the product seat slide groove for pushing the product in that direction;

[0011] The Z-axis clamping assembly includes a pressure plate that engages with the upper surface of the product base to push the upper surface of the product to align.

[0012] Furthermore, the X-axis clamping assembly includes a first limiting bolt, a clamping block, and a second limiting bolt. The first limiting bolt passes through the rotating block and is threaded onto the connecting rod. The second limiting bolt is threaded onto both open ends of the rotating block. The clamping block is passed through by the second limiting bolt and is restricted to the open end of the rotating block. The rotation of the rotating block on the connecting rod and the rotation of the clamping block on the open end of the rotating block adapt to the state of the product seat slide and the clamping mold core.

[0013] Furthermore, the X-axis clamping assembly includes a front lead screw support, a rear lead screw support, a threaded rod, and a threaded sleeve. The front and rear lead screw supports are fixedly mounted on the upper end of the suction cup fixture base. One end of the threaded rod is rotatably mounted on the rear lead screw support, and the other end of the threaded rod is threaded. The threaded sleeve is provided with a threaded hole, into which the threaded rod is screwed. The connecting rod is sleeved on the threaded sleeve and fixedly connected by bolts. The connecting rod is driven to move axially along the threaded rod by the threads of the threaded rod and the threaded sleeve.

[0014] Furthermore, the X-axis clamping assembly includes a connecting rod and an anti-loosening set screw. The end of the threaded rod away from the rear lead screw support is fitted with a connecting rod for driving the threaded rod to rotate. The product seat is threaded with an anti-loosening set screw, which is set at a 90-degree angle to the connecting rod. The anti-loosening set screw is used to limit the rotation of the connecting rod.

[0015] Furthermore, a sliding limiter is provided on the connecting rod. The sliding limiter includes a slide table and a slide base. The upper end face of the slide table is fastened to the groove on the lower end face of the connecting rod end. The lower end face of the slide table is provided with a groove, which is inserted into the upper end face of the slide base.

[0016] Furthermore, a support base is fixedly installed on the product base to support the Y-axis clamping assembly.

[0017] Furthermore, the Y-axis clamping assembly includes a movable block, a second fastening bolt, a wedge, and a first adjusting bolt. The clamping plate is fixedly mounted on the vertical end face of the movable block by the second fastening bolt. The movable block is provided with an inclined groove, and the first adjusting bolt is provided with an inclined protrusion that slides on the inclined groove of the movable block. The first adjusting bolt passes through the middle of the wedge and is connected to the product seat. The wedge is pushed to move laterally on the horizontal plane by the raising and lowering of the first adjusting bolt, thereby pushing the mold core on the product seat to be aligned by the clamping plate.

[0018] Furthermore, the Z-axis clamping assembly includes a guide bolt, a second adjusting bolt, and a guide seat. The guide seat is fixedly installed in a groove at the upper end of the product seat. The lower end of the second adjusting bolt is threaded in a threaded hole at the upper end of the product seat. The lower end of the guide bolt is threaded in a threaded hole in the guide seat. The pressure plate is sleeved on the upper end of the guide bolt. The movement of the pressure plate is restricted by the guide bolt, and the clamping of the pressure plate is secured by the second adjusting bolt.

[0019] A clamping method for a clamping fixture used for batch cutting of ultra-high precision mold cores includes the following steps:

[0020] S1, place the cut mold cores in batches into the slide groove of the product holder;

[0021] S2, Install the Z-axis clamping assembly onto the product base, and apply initial downward pressure to the upper surface of the mold core using the pressure plate;

[0022] S3, the control guide bolt and the second adjusting bolt are screwed into the guide seat and the product seat respectively, restricting the movement of the pressure plate and pressing the pressure plate down again to fix the horizontal height of the pressure plate;

[0023] S4 controls the rotation of the connecting rod, using the rotation of the threaded rod to drive the connecting rod to move along the X-axis. The first limit bolt and clamping block on the connecting rod contact the mold core, making adaptive micro-rotations and simultaneously pushing multiple sets of mold cores.

[0024] S5, control the first adjusting bolt to screw downward into the support seat, push the wedge block, use the wedge block's inclined block to push the inclined groove of the movable block, so that the clamping plates on both sides push each set of mold cores to slide on the support seat along the Y axis;

[0025] S6 uses a torque wrench to precisely control the secondary rotation of the threaded rod, the first adjusting bolt, and the second adjusting bolt, thereby clamping and fixing the mold core.

[0026] The technical solution provided in this application has the following advantages compared with the prior art:

[0027] 1. This application achieves "X+Y+Z" three-dimensional positioning and clamping through a unique structure comprising a base assembly and X-axis, Y-axis, and Z-axis clamping assemblies. The product seat in the base assembly has a groove for product stacking, providing initial positioning for the mold core; the X-axis clamping assembly, through the coordinated action of connecting rods, rotating blocks, and clamping blocks, can push the mold core to fit tightly in the X direction and adaptively adjust; the clamping plate of the Y-axis clamping assembly is located on the side of the groove, which can push the mold core to align in the Y direction; the pressure plate of the Z-axis clamping assembly engages with the upper surface of the product seat, aligning the upper surface of the mold core. This three-dimensional positioning structure effectively solves the problem of insufficient positioning accuracy in traditional fixtures, ensuring that the micro-groove dimensional deviation is controlled within a very small range, thus improving machining accuracy.

[0028] 2. The Y-axis clamping assembly of this application can be adjusted to adapt to the shape of products with different lengths, the Z-axis clamping assembly can adapt to the shape of products with different heights, and the X-axis clamping assembly, combined with a digital torque wrench, can achieve clamping with different forces and adjust, position, and clamp 1-50 products. Furthermore, the fixture adopts a 2+2 symmetrical clamping structure layout, solving the clamping problem of accumulated thickness errors in four groups of parts through the rotation of the rotating block and clamping block. This greatly improves the fixture's adaptability to different sizes and types of mold cores, eliminating the need for frequent fixture changes and improving processing efficiency.

[0029] 3. In this application, the rotating block and clamping block of the X-axis clamping assembly are rotatable, which can adapt to angular offsets and uneven distribution after the mold core is placed, ensuring stable clamping; the Y-axis clamping assembly, through the cooperation of the movable block, wedge block, and adjusting bolt, precisely controls the pushing and clamping of the mold core by the clamping plate; the Z-axis clamping assembly uses the guide bolt and the second adjusting bolt to restrict the movement of the pressure plate and secure the clamping. This multi-component collaborative clamping structure achieves precise and stable clamping of the mold core, avoiding deformation or displacement of the mold core due to clamping force issues, and improving processing quality. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of this application, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of this application;

[0032] Figure 2 This is a top view of this application;

[0033] Figure 3 For this application Figure 2 Cross-sectional view at point AA;

[0034] Figure 4 For this application Figure 2 Cross-sectional view at point BB;

[0035] Figure 5 This is a schematic diagram of the parts assembled on the product base of this application;

[0036] Figure 6 For this application Figure 5 Enlarged view of the local structure at point C;

[0037] Figure 7 This is a schematic diagram of the X-axis clamping assembly of this application;

[0038] Figure 8This is a cross-sectional view of the threaded rod axis of this application;

[0039] Figure 9 This is a schematic diagram of the Y-axis clamping assembly of this application;

[0040] Figure 10 This is a schematic diagram of the structure of the product holder in this application.

[0041] In the diagram: 100-Base assembly; 101-Suction cup fixture base; 102-First fastening bolt; 103-Product seat; 104-Support seat; 200-X-axis clamping assembly; 201-Front lead screw support; 202-Rear lead screw support; 203-Threaded rod; 204-Connecting rod; 205-Anti-loosening set screw; 206-Threaded sleeve seat; 207-Connecting rod; 208-First limit bolt; 209-Rotating block; 210-Clamping block; 211-Slide table; 212-Slide seat; 213-Second limit bolt; 300-Y-axis clamping assembly; 301-Moving block; 302-Clamping plate; 303-Second fastening bolt; 304-Wedge block; 305-First adjusting bolt; 400-Z-axis clamping assembly; 401-Pressure plate; 402-Guide bolt; 403-Second adjusting bolt; 404-Guide seat. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] A clamping fixture for batch cutting of ultra-high precision mold cores includes a base assembly 100, an X-axis clamping assembly 200, a Y-axis clamping assembly 300, and a Z-axis clamping assembly 400.

[0045] The base assembly 100 includes a suction cup fixture base 101 and a product base 103. The product base 103 is disposed on the suction cup fixture base 101. The suction cup fixture base 101 is used to support the X-axis clamping assembly 200. The product base 103 is used to support the X-axis clamping assembly 200 and guide the Z-axis clamping assembly 400. The product base 103 is provided with a sliding groove for product stacking.

[0046] The X-axis clamping assembly 200 includes a connecting rod 207, on which a plurality of rotating blocks 209 are rotatably disposed. The rotating blocks 209 have a U-shaped structure, and the two ends of their openings are used to push the multiple product seats 103 slide grooves to fit tightly together.

[0047] The Y-axis clamping assembly 300 includes a plurality of clamping plates 302, which are disposed on the side of the slide groove of the product seat 103 and are used to push the product in that direction.

[0048] The Z-axis clamping assembly 400 includes a pressure plate 401 that engages with the upper surface of the product base 103 to push the upper surface of the product to align.

[0049] The Y-axis clamping component 300 can be adapted to products of different lengths and shapes, the Z-axis clamping component 400 can be adapted to products of different heights and shapes, the X-axis clamping component 200 + digital torque wrench can achieve clamping with different forces, and there is an adjustment, positioning and clamping module of 1Pcs to 50Pcs.

[0050] To meet the machining needs of microgrooves of different sizes and types, the positioning and clamping methods of the fixture can be quickly adjusted without replacing the entire fixture, thus improving the fixture's versatility and flexibility. Simultaneously, the fixture features a 2+2 symmetrical clamping structure, using the rotation of the rotating block 209 and the clamping block 210 to solve the clamping problem of four sets of parts due to cumulative thickness errors.

[0051] The X-axis clamping assembly 200 includes a first limiting bolt 208, a clamping block 210, and a second limiting bolt 213. The first limiting bolt 208 passes through the rotating block 209 and is threaded onto the connecting rod 207. The second limiting bolt 213 is threaded onto both open ends of the rotating block 209. The clamping block 210 is passed through by the second limiting bolt 213 and is restricted to the open end of the rotating block 209. The rotation of the rotating block 209 on the connecting rod 207 and the rotation of the clamping block 210 on the open end of the rotating block 209 are used to adapt to the state of the product seat 103 slide groove and which mold core it is.

[0052] Specifically, such as Figure 7As shown, a first limiting bolt 208 is provided at each end of the connecting rod 207. The lower end of the first limiting bolt 208 is threaded onto the connecting rod 207, and the rotating block 209 is sleeved on the first limiting bolt 208 and limited by the protrusion on the upper end face of the first limiting bolt 208. Thus, the first limiting bolt 208 limits the rotating block 209 to the end of the connecting rod 207, so that the rotating block 209 can only rotate horizontally at the end of the connecting rod 207. A second limiting bolt 213 is threaded onto each of the two ends of the U-shaped opening end of the rotating block 209. A clamping block 210 is sleeved on each second limiting bolt 213, and is also limited by the protrusion on the upper end face of the second limiting bolt 213, so that the clamping block 210 can only rotate horizontally at the end of the opening end of the rotating block 209.

[0053] The contact state between the clamping block 210 and the mold core on the product seat 103 groove is changed by rotating the rotating block 209 and the clamping block 210. This adapts to the angular shift or uneven distribution of the mold core after it is placed on the product seat 103 groove. When the clamping block 210 contacts the mold core, it rotates around the axis of the second limit bolt 213 on the rotating block 209 due to the obstruction of the mold core, thus adapting to the tilt angle of the mold core. During continuous pushing, more and more mold cores will contact each other, obstructing the pushing of the clamping block 210. When the resistance experienced by two clamping blocks 210 on the same rotating block 209 is different, the second limit bolt 213 obstructs the rotating block. The opening end of 209 causes the rotating block 209 to rotate around the axis of the first limit bolt 208 on the connecting rod 207. The synchronous pushing of the two sliding upper mold cores is achieved through the dual rotation of the rotating block 209 and the clamping block 210, thereby ensuring the stable clamping of the mold core by the connecting rod 207. The two ends of the connecting rod 207 are provided with the same parts and the same installation method, thereby avoiding excessive or insufficient clamping force on the mold core on the product seat 103, so that the final clamping state is kept in vertical plane synchronization, that is, the side of the connecting rod 207, the rotating block 209 and the clamping block 210 facing the mold core are parallel. Due to the thickness difference of the mold core, the multiple clamping blocks 210 are not coplanar.

[0054] When using the X-axis clamping assembly, a digital torque wrench is used to rotate the threaded rod 203 via the connecting rod 204. Due to the threaded engagement between the threaded rod 203 and the threaded sleeve 206, the connecting rod 207 is driven to move axially along the threaded rod 203. During this process, the torque value set by the digital torque wrench can precisely control the force of the connecting rod 207's movement, thereby precisely controlling the clamping force of the rotating block 209 and the clamping block 210 on the mold core. For example, for mold cores of different thicknesses and materials, different torque values ​​within the range of 0.3-6 Nm can be set by the digital torque wrench, so that the clamping block 210 contacts and clamps the mold core with an appropriate force, ensuring that the mold core will not loosen due to insufficient clamping force during processing, and also avoiding deformation of the mold core due to excessive clamping force. Meanwhile, the sliding limiters, namely the slide table 211 and the slide block 212, set at both ends of the connecting rod 207 not only ensure the stability of the movement of the connecting rod 207, but also help maintain the uniformity of the clamping force and prevent the clamping force from changing due to the shaking of the connecting rod 207.

[0055] The X-axis clamping assembly 200 includes a front lead screw support 201, a rear lead screw support 202, a threaded rod 203, and a threaded sleeve 206. The front lead screw support 201 and the rear lead screw support 202 are fixedly installed on the upper end of the suction cup tooling base 101. One end of the threaded rod 203 is rotatably mounted on the rear lead screw support 202, and a bearing is provided on it for the connection between the rear lead screw support 202 and the end of the threaded rod 203 to ensure smooth rotation of the threaded rod 203. The other end of the threaded rod 203 is provided with a thread. The threaded sleeve 206 is provided with a threaded hole, and the threaded sleeve 206 is screwed into the threaded rod 203. The connecting rod 207 is sleeved on the threaded sleeve 206 and fixedly connected by bolts. The connecting rod 207 is driven to move along the axial direction of the threaded rod 203 by the threads of the threaded rod 203 and the threaded sleeve 206.

[0056] Specifically, such as Figure 7 and Figure 8 As shown, a through hole is provided in the middle of the connecting rod 207. The threaded sleeve 206 has a T-shaped structure, including a vertical plate and a threaded cylinder. During installation, the threaded cylinder is inserted into the through hole in the middle of the connecting rod 207 from the side facing the mold core. Then, external bolts are inserted into the through holes at the four corners of the vertical plate of the threaded sleeve 206, and then screwed into the corresponding threaded hole on the same side of the connecting rod 207. This achieves a fixed connection between the threaded sleeve 206 and the connecting rod 207. Then, the vertical plate of the threaded sleeve 206 is fitted onto the end of the threaded rod 203. Through the thread of its threaded cylinder and the thread of the threaded rod 203, the axial sliding of the threaded sleeve 206 and the connecting rod 207 is achieved by the rotation of the threaded rod 203. During this process, sliding limiters are provided on the lower side of both ends of the connecting rod 207 to ensure the horizontal sliding of the connecting rod 207, so that the connecting rod 207 and the threaded sleeve 206 do not rotate with the threaded rod 203, but slide along the axis of the threaded rod 203.

[0057] The X-axis clamping assembly 200 includes a connecting rod 204 and an anti-loosening set screw 205. The connecting rod 204 is sleeved on one end of the threaded rod 203 away from the rear lead screw support 202, which is used to drive the threaded rod 203 to rotate. The anti-loosening set screw 205 is threaded on the product seat 103. The anti-loosening set screw 205 is set at a 90-degree angle with the connecting rod 204. The anti-loosening set screw 205 is used to limit the rotation of the connecting rod 204.

[0058] Specifically, such as Figure 7 and Figure 8 As shown, the end of the threaded rod 203 facing the connecting rod 204 has a polygonal structure, while the end of the connecting rod 204 facing the threaded rod 203 has a polygonal groove. The connecting rod 204 is sleeved on this end of the threaded rod 203, and the rotation of the connecting rod 204 is transmitted to the threaded rod 203 through the polygonal structure. That is, the operator drives the outer end of the connecting rod 204 to rotate, thereby driving the threaded rod 203 to rotate on the front lead screw support 201 and the rear lead screw support 202.

[0059] The connection points of the threaded rod 203 and the connecting rod 204 are both rotatably mounted on the front lead screw support 201, and each has a bearing on its outer side to support the smooth rotation of the threaded rod 203 and the connecting rod 204. The outer side of the connecting rod 204 is provided with a polygonal groove and a polygonal outer end face to accommodate different adjustment tools. That is, the connecting rod 204 is driven by the outer end face or by inserting it into the groove, increasing the versatility of the adjustment tools.

[0060] like Figure 8 As shown, the lower end face of the anti-loosening set screw 205 has a stepped cross-section, i.e., it convexes outwards, while the connecting rod 204 has an inwardly concave structure at the same location. The structures of the anti-loosening set screw 205 and the connecting rod 204 are matched, thus, after the connecting rod 204 is inserted into the end of the threaded rod 203, the vertical downward screwing of the anti-loosening set screw 205 restricts the sliding of the connecting rod 204, i.e., its movement along the axis of the threaded rod 203, preventing the connecting rod 204 from falling off due to vibration during processing. The anti-loosening set screw 205 is vertically screwed in, and after its lower end face contacts the connecting rod 204, it continues to screw in, increasing the friction between the lower end face of the anti-loosening set screw 205 and the connecting rod 204 to restrict the rotation of the connecting rod 204, fixing the state of the connecting rod 204, and thus fixing the clamping state and force of the slide table 211 on the mold core.

[0061] A sliding limiter is provided on the connecting rod 207. The sliding limiter includes a slide table 211 and a slide seat 212. The upper end face of the slide table 211 is fastened to the groove on the lower end face of the connecting rod 207. The lower end face of the slide table 211 is provided with a groove, which is inserted into the upper end face of the slide seat 212.

[0062] Specifically, such as Figure 3 and Figure 7 As shown, the slide 212 is fixedly mounted on the suction cup fixture base 101 by multiple bolts. The slide 212 is provided with a sliding groove, and the slide table 211 is provided with a slider in the groove on the lower end face. During installation, the slide table 211 is horizontally inserted from the end of the slide block 212, so that the slider in the groove of the slide table 211 is inserted into the groove of the slide block 212, thus forming an assembly of the slide table 211 and the slide block 212. The slide table 211 slides horizontally on the slide block 212, and the end of the connecting rod 207 can be stabilized by the support of the slide table 211 and the limitation of horizontal swing. Each end of the connecting rod 207 is provided with a sliding limiter, so that when the threaded rod 203 rotates, the threaded sleeve 206 and the connecting rod 207 move along the axis of the threaded rod 203 through the thread stabilization drive, and the two ends of the connecting rod 207 push the slide table 211 to slide on the slide block 212. The sliding of the slide table 211 supports and stabilizes the movement of the connecting rod 207 in the opposite direction, preventing the connecting rod 207 from rotating around the axis of the threaded rod 203 and from shaking on the horizontal plane, thereby stabilizing the clamping block 210's stable clamping of the mold core.

[0063] A support base 104 is fixedly installed on the product base 103 to support the Y-axis clamping assembly 300.

[0064] Specifically, such as Figure 5 As shown, the product base 103 has two large grooves, each with a support base 104 fixedly mounted on it. Each support base 104 has two protrusions arranged opposite each other. The side ends of the protrusions of the support base 104 engage with the inner wall of the groove in the product base 103 to form a sliding groove space for the clamping block 210 to slide. A gap exists between this space and the clamping block 210, allowing the clamping block 210 to rotate within a certain angle. The space between the two protrusions is used to vertically mount a Y-axis clamping assembly 300, which slides horizontally at the ends of the protrusions.

[0065] The Y-axis clamping assembly 300 includes a movable block 301, a second fastening bolt 303, a wedge block 304, and a first adjusting bolt 305. The clamping plate 302 is fixedly mounted on the vertical end face of the movable block 301 by the second fastening bolt 303. The movable block 301 is provided with a sloping groove. The first adjusting bolt 305 is provided with an inclined protrusion that slides on the sloping groove of the movable block 301. The first adjusting bolt 305 passes through the middle of the wedge block 304 and is connected to the product seat 103. The wedge block 304 is pushed to move laterally on the horizontal plane by the raising and lowering of the first adjusting bolt 305, thereby pushing the mold core on the product seat 103 to be aligned by the clamping plate 302.

[0066] Specifically, such as Figure 5 and Figure 6As shown, the lower end of the first adjusting bolt 305 is threadedly connected to the threaded hole of the support seat 104 on the product seat 103, while the upper end of the first adjusting bolt 305 is inserted into the through hole in the middle of the wedge block 304 and is rotatably set. That is, after the first adjusting bolt 305 is installed, it is fastened to the wedge block 304 by a part, so that the first adjusting bolt 305 cannot slide vertically on the wedge block 304, but can only rotate. When the operator drives the first adjusting bolt 305 to rotate with an external tool, it is screwed into the threaded hole of the support seat 104 through the thread at its lower end, thereby causing the first adjusting bolt 305 to rise and fall, thereby driving the wedge block 304 to rise and fall. When the first adjusting bolt 305 rises and falls, the two protrusions of the movable block 301 and the support seat 104 restrict the wedge block 304 from rotating due to the rotation of the first adjusting bolt 305, thereby avoiding affecting the clamping plate 302's clamping of the mold core. Then, the inclined blocks on both sides of the wedge block 304 push or pull the inclined groove of the movable block 301, causing the movable block 301 to move horizontally on the support base 104, controlling the clamping plates 302 on both sides to move closer to or away from the mold core. When moving closer, the mold core is pushed neatly and clamped; when moving away, the mold core is removed.

[0067] In the process of controlling the vertical movement of the wedge block 304 via the first adjusting bolt 305, and using the inclined plane to push the movable block 301 horizontally, thereby causing the clamping plate 302 to move the mold core neatly, the torque of the first adjusting bolt 305 can also be precisely controlled using a digital torque wrench. Because the raising and lowering of the first adjusting bolt 305 directly affects the pushing force of the wedge block 304 on the movable block 301, setting an appropriate torque using a digital torque wrench can precisely adjust the clamping force of the clamping plate 302 on the mold core. For example, for mold cores of different sizes and characteristics, the torque value can be flexibly set to ensure that the mold core is stably clamped in the Y-axis direction and will not be damaged or misaligned due to improper clamping force.

[0068] The Z-axis clamping assembly 400 includes a guide bolt 402, a second adjusting bolt 403, and a guide seat 404. The guide seat 404 is fixedly installed in a groove at the upper end of the product seat 103. The lower end of the second adjusting bolt 403 is threaded in a threaded hole at the upper end of the product seat 103. The lower end of the guide bolt 402 is threaded in a threaded hole in the guide seat 404. The pressure plate 401 is sleeved on the upper end of the guide bolt 402. The guide bolt 402 restricts the movement of the pressure plate 401, and the second adjusting bolt 403 secures the clamping of the pressure plate 401.

[0069] Specifically, such as Figure 1 and Figure 5As shown, in use, first, the two guide seats 404 are threaded into the threaded holes on the product seat 103. Then, the two guide bolts 402 and the second adjusting bolt 403 are inserted into the through holes of the pressure plate 401. Multiple layers of gaskets are provided between the second adjusting bolt 403 and the pressure plate 401 for protection and cushioning. Next, the pressure plate 401 and its guide bolts 402 and second adjusting bolts 403 are fastened to the upper end of the product seat 103 and aligned with the upper end of the guide seat 404, so that the lower end of the guide bolt 402 is screwed into the corresponding guide seat 404. Then, the second adjusting bolt 403 is screwed into the threaded hole of the product seat 103 by using an external tool. As the second adjusting bolt 403 gradually moves downward, it gradually pushes the pressure plate 401 downward through the gaskets, thereby pushing the lower end face of the pressure plate 401 against the upper end face of the mold core inside the product seat 103, aligning their upper ends.

[0070] A clamping method for a clamping fixture used for batch cutting of ultra-high precision mold cores includes the following steps:

[0071] S1, the cut mold cores are placed in batches in the groove of the product holder 103;

[0072] S2, install the Z-axis clamping assembly 400 onto the product holder 103, and apply initial downward pressure to the upper surface of the mold core through the pressure plate 401;

[0073] S3, control guide bolt 402 and second adjusting bolt 403 are screwed into guide seat 404 and product seat 103 respectively, restricting the movement of pressure plate 401 and pressing down pressure plate 401 again to fix the horizontal height of pressure plate 401; thereby restricting the mold core from changing in the Z-axis direction when clamping in other directions.

[0074] S4, control the rotation of connecting rod 204, and use the rotation of threaded rod 203 to drive connecting rod 207 to move along the X-axis. The first limit bolt 208 and clamping block 210 on connecting rod 207 contact the mold core and make adaptive micro-rotation, and simultaneously push multiple sets of mold cores.

[0075] S5, control the first adjusting bolt 305 to screw downward into the support seat 104, push the wedge block 304, use the inclined block of the wedge block 304 to push the inclined groove of the movable block 301, so that the clamping plates 302 on both sides push each set of mold cores to slide on the support seat 104 along the Y axis.

[0076] S6 uses a torque wrench to precisely control the secondary rotation of the threaded rod 203, the first adjusting bolt 305, and the second adjusting bolt 403, thereby clamping and fixing the mold core.

[0077] The digital torque wrench precisely sets the torque value within a range of 0.3-6 Nm based on the material and thickness of the mold core. For heat-sensitive and easily deformable mold cores like PAI, a smaller torque value is selected to ensure sufficient clamping force to prevent the mold core from moving during processing, while avoiding deformation caused by excessive heat and pressure from the clamping force. In actual operation, the torque of the threaded rod 203 is first set and its rotation controlled to ensure appropriate clamping force of the mold core in the X-axis direction; then, the torque of the first adjusting bolt 305 is adjusted to precisely match the clamping force in the Y-axis direction to the mold core requirements; finally, the torque of the second adjusting bolt 403 is set and rotated to ensure just the right clamping force in the Z-axis direction. In this way, precise, stable, and appropriate clamping force control of the mold core in three dimensions is achieved, effectively avoiding workpiece deformation and surface damage caused by clamping force issues, ensuring high precision and high quality in microgroove machining.

[0078] Traditional mold core processing involves individual processing and lacks jigs for batch processing, which severely impacts the processing cycle. By using this jig to hold the mold cores, the cycle time can be significantly reduced, effectively solving the pain points of long delivery cycles and slow response times, while also improving production efficiency and accelerating capacity release.

[0079] Given the heat-sensitive properties of the PAI material in the product mold core and the tendency of the workpiece to deform due to its groove density and depth ratio, this fixture employs a three-dimensional positioning and clamping logic of "X+Y+Z". A high-precision electronic digital display torque wrench (0.3–6 Nm) is selected as the clamping component to achieve precise adjustment of the clamping force, preventing workpiece deformation caused by excessive clamping force and preventing surface scratches and micro-cracks. Furthermore, a torque wrench sensor provides real-time feedback on the clamping force, forming a closed-loop adjustment that ensures stable and appropriate clamping force for workpieces of different thicknesses and materials, balancing clamping stability and workpiece integrity, and reducing product scrap rate.

[0080] In terms of material selection, this fixture uses high-strength, high-rigidity 7075T651 aluminum alloy. The hardness and toughness of the material are improved through heat treatment, reducing the deformation coefficient of the fixture itself. In terms of structural design, an integrated molding process is adopted to reduce rigidity loss caused by splicing gaps. At the same time, the overall structural layout of the fixture is optimized, the stress points are reasonably distributed, and the vibration resistance of the fixture is improved, avoiding problems such as tool wear and excessive surface roughness of microgrooves caused by vibration during high-speed cutting.

[0081] Based on the above design scheme, the fixture achieves stable sub-micron level repeatability and nanometer level datum error, precisely adapting to the cutting requirements of microgrooves at the 0.08 mm level. Actual application data shows that after adopting this fixture, the microgroove size deviation can be controlled within ±0.001 mm, and the groove perpendicularity and distortion rate are reduced by more than 99%. This effectively solves the problems of microgroove offset, misalignment, and groove wall tilting caused by positioning deviations in traditional vises, clamps, and other fixtures. Ensuring the dimensional consistency and standardization of the microgrooves provides a reliable precision datum for subsequent processing steps, significantly improving the core performance of high-end products.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping jig for batch cutting of ultra-high-precision mold cores, characterized by, It includes a base assembly (100), an X-axis clamping assembly (200), a Y-axis clamping assembly (300), and a Z-axis clamping assembly (400). The base assembly (100) includes a suction cup fixture base (101) and a product seat (103). The product seat (103) is disposed on the suction cup fixture base (101). The suction cup fixture base (101) is used to support the X-axis clamping assembly (200). The product seat (103) is used to support the X-axis clamping assembly (200) and guide the Z-axis clamping assembly (400). The product seat (103) is provided with a groove for product stacking. The X-axis clamping assembly (200) includes a connecting rod (207), on which a plurality of rotating blocks (209) are rotatably mounted. The rotating blocks (209) have a U-shaped structure, and the two ends of their openings are used to push the multiple product seats (103) to fit tightly against the slide grooves. The Y-axis clamping assembly (300) includes a plurality of clamping plates (302), which are disposed on the side of the slide groove of the product seat (103) for pushing the product in that direction; The Z-axis clamping assembly (400) includes a pressure plate (401) that engages with the upper surface of the product base (103) to push the upper surface of the product to align.

2. The clamping jig for batch cutting of super-high-precision mold cores according to claim 1, characterized in that, The X-axis clamping assembly (200) includes a first limiting bolt (208), a clamping block (210), and a second limiting bolt (213). The first limiting bolt (208) passes through the rotating block (209) and is threaded onto the connecting rod (207). The two open ends of the rotating block (209) are threaded with the second limiting bolt (213). The clamping block (210) is passed through by the second limiting bolt (213) and restricted to the open end of the rotating block (209). The rotation of the rotating block (209) on the connecting rod (207) and the rotation of the clamping block (210) on the open end of the rotating block (209) adapt to the state of the product seat (103) slide and the clamping mold core.

3. The clamping jig for batch cutting of super-high-precision mold cores according to claim 1, characterized in that, The X-axis clamping assembly (200) includes a front lead screw support (201), a rear lead screw support (202), a threaded rod (203), and a threaded sleeve (206). The front lead screw support (201) and the rear lead screw support (202) are fixedly installed on the upper end of the suction cup tooling base (101). One end of the threaded rod (203) is rotatably mounted on the rear lead screw support (202), and the other end of the threaded rod (203) is provided with threads. The threaded sleeve (206) is provided with threaded holes, and the threaded sleeve (206) is screwed into the threaded rod (203) at that end. The connecting rod (207) is sleeved on the threaded sleeve (206) and fixedly connected by bolts. The connecting rod (207) is driven to move along the axial direction of the threaded rod (203) by the threads of the threaded rod (203) and the threaded sleeve (206).

4. The clamping jig for batch cutting of super-high-precision mold cores according to claim 3, characterized in that, The X-axis clamping assembly (200) includes a connecting rod (204) and an anti-loosening screw (205). The connecting rod (204) is sleeved on one end of the threaded rod (203) away from the rear screw support (202) for driving the threaded rod (203) to rotate. The product seat (103) is threaded with an anti-loosening screw (205). The anti-loosening screw (205) is set at a 90-degree angle with the connecting rod (204). The anti-loosening screw (205) is used to limit the rotation of the connecting rod (204).

5. The clamping jig for batch cutting of super-high-precision mold cores according to claim 1, characterized in that, The connecting rod (207) is provided with a sliding limiter, which includes a slide (211) and a slide (212). The upper end face of the slide (211) is fastened to the groove on the lower end face of the connecting rod (207). The lower end face of the slide (211) is provided with a groove, which is inserted into the upper end face of the slide (212).

6. The clamping jig for batch cutting of super-high-precision mold cores according to claim 1, characterized in that, A support base (104) is fixedly provided on the product base (103) for supporting the Y-axis clamping assembly (300).

7. The clamping jig for batch cutting of super-high-precision mold cores according to claim 1, characterized in that, The Y-axis clamping assembly (300) includes a movable block (301), a second fastening bolt (303), a wedge (304), and a first adjusting bolt (305). The clamping plate (302) is fixedly installed on the vertical end face of the movable block (301) by the second fastening bolt (303). The movable block (301) is provided with a sloping groove, and the first adjusting bolt (305) is provided with an inclined protrusion. The inclined protrusion slides on the sloping groove of the movable block (301). The first adjusting bolt (305) passes through the middle of the wedge (304) and is connected to the product seat (103). The wedge (304) is pushed to move laterally on the horizontal plane by the lifting and lowering of the first adjusting bolt (305), and then the mold core on the product seat (103) is pushed to be aligned by the clamping plate (302).

8. A clamping fixture for batch cutting of ultra-high precision mold cores according to claim 1, characterized in that, The Z-axis clamping assembly (400) includes a guide bolt (402), a second adjusting bolt (403), and a guide seat (404). The guide seat (404) is fixedly installed in a groove at the upper end of the product seat (103). The lower end of the second adjusting bolt (403) is threaded in a threaded hole at the upper end of the product seat (103). The lower end of the guide bolt (402) is threaded in a threaded hole in the guide seat (404). The pressure plate (401) is sleeved on the upper end of the guide bolt (402). The guide bolt (402) restricts the movement of the pressure plate (401), and the second adjusting bolt (403) tightens the clamping of the pressure plate (401).

9. A clamping method for a clamping fixture for batch cutting of ultra-high precision mold cores according to any one of claims 1-8, characterized in that, Includes the following steps: S1, the cut mold cores are placed in batches in the groove of the product holder (103); S2, install the Z-axis clamping assembly (400) onto the product holder (103), and apply initial downward pressure to the upper surface of the mold core using the pressure plate (401); S3, control guide bolt (402) and second adjusting bolt (403) are screwed into guide seat (404) and product seat (103) respectively, restricting the movement of pressure plate (401) and pressing down pressure plate (401) again to fix the horizontal height of pressure plate (401); S4, control the rotation of the connecting rod (204), and use the rotation of the threaded rod (203) to drive the connecting rod (207) to move along the X-axis. The first limit bolt (208) and the clamping block (210) on the connecting rod (207) contact the mold core and make adaptive micro-rotations, and simultaneously push multiple sets of mold cores. S5, control the first adjusting bolt (305) to screw downward into the support seat (104), push the wedge (304), use the wedge (304) to push the inclined groove of the movable block (301), so that the clamping plates (302) on both sides push each set of mold cores to slide on the support seat (104) along the Y axis; S6, by precisely controlling the secondary rotation of the threaded rod (203), the first adjusting bolt (305) and the second adjusting bolt (403) with a torque wrench, clamps and fixes the mold core.

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