A wire cutting fixture

Abstract

The present invention provides a wire cutting fixture, comprising a sample positioning table and a sample carrier that slides horizontally and reciprocally on the sample positioning table, wherein a sample slot is provided on the upper side of the sample carrier, and the length direction of the sample slot extends along a horizontal straight line so that multiple samples to be cut can be placed therein at the same time and adapted to the cutting direction of the wire cutting station; at the same time, a sliding component and a fixing component are further provided between the sample carrier and the sample positioning table; the sliding component is used to assist the sample carrier in sliding relative to the sample positioning table after multiple samples to be cut are placed in the sample slot in sequence, until the center line of the sample slot in the width direction is aligned with the cutting line of the wire cutting station; the fixing component is used to keep the sample carrier fixed relative to the sample positioning table after the center line of the sample slot in the width direction is aligned with the cutting line of the wire cutting station, so as to stably implement the wire cutting action. The present invention integrates accurate fixation and batch precision tool setting functions, effectively improving the efficiency and accuracy of wire cutting operations and reducing sample waste.

Description

Technical Field

[0001] The present invention relates to the technical field of material processing equipment, in particular to a wire cutting fixture. Background Art

[0002] Wire cutting is a processing technology that uses a continuously moving thin metal wire as an electrode to perform pulsed spark discharge to erode metal and cut the workpiece into shape. In recent years, its technology has continued to develop and is widely used in various precision processing fields; for example, it can cut spherical materials (such as crystals, ceramics, glass, etc.) in half in containerless experiments.

[0003] In the related art, containerless experimental samples are all spherical samples of 2-3mm. For the study of on-orbit experimental samples and ground comparative experiments, it is usually necessary to cut the spherical samples in half to form two hemispheres, and study the internal structure of the material samples. However, since spherical samples have spherical curved surfaces, they are not only prone to slipping when using traditional mechanical clamps, but also prone to rotational offset during the cutting process, resulting in the internal cutting surface of the spherical sample being a C-shaped curved surface rather than a flat surface, making subsequent tests such as electron microscopy impossible, resulting in a waste of precious samples. At the same time, traditional fixed fixtures can usually only fix a single sample, and the cutting efficiency is low. Moreover, traditional wire cutting alignment methods are mostly manual visual, with large deviations in adjusting the cutting path and low accuracy of the cutting results. Therefore, the study of a wire cutting positioning fixture suitable for spherical materials that integrates accurate fixation and batch precision tool setting functions will have a profound impact on the development of the wire cutting industry. Summary of the Invention

[0004] The purpose of the present invention is to provide a wire cutting fixture to improve the clamping efficiency and stability of spherical materials, achieve accurate fixation of spherical materials and batch and precise tool setting, and reduce sample waste.

[0005] The technical solutions provided by the present invention are as follows:

[0006] The present invention provides a wire cutting fixture, comprising:

[0007] The sample positioning table is located below the wire cutting station;

[0008] A sample carrier is arranged on the sample positioning table for horizontal reciprocating sliding movement and is detachably connected to the sample positioning table;

[0009] The sample placement groove is provided on the upper side of the sample carrier, and its length direction extends along a horizontal straight line, and is used to sequentially place multiple samples to be cut, and is adapted to the cutting direction of the wire cutting station;

[0010] A sliding assembly and a fixing assembly are both arranged between the sample carrier and the sample positioning stage; the sliding assembly is used to assist the sample carrier to slide relative to the sample positioning stage after multiple samples to be cut are placed in the sample placement groove in sequence, until the center line of the sample placement groove in the width direction is aligned with the cutting line of the wire cutting station; the fixing assembly is used to keep the sample carrier fixed relative to the sample positioning stage after the center line of the sample placement groove in the width direction is aligned with the cutting line of the wire cutting station, so as to stably implement the wire cutting action.

[0011] The wire cutting fixture provided by the present invention has a sample groove on the sample carrier, and the sample groove is used to support the spherical sample. The difficulty of clamping the spherical sample and the probability of slippage and deviation during the cutting process are reduced, which effectively improves the clamping efficiency of the wire cutting fixture and the cutting accuracy, thereby effectively reducing the waste of sample materials. At the same time, the sample groove is arranged in a straight line, and multiple spherical samples of the same size can be placed on the sample carrier at the same time, so that multiple spherical samples can be cut in one tool adjustment, which helps to further improve the efficiency of the wire cutting operation. At the same time, the tool adjustment can be achieved by sliding the sample carrier to align the center line of the sample groove in the width direction with the cutting line of the wire cutting station. The tool adjustment has high accuracy and is easy to operate, effectively reduces the deviation of the cutting path, further improves the cutting accuracy, and effectively ensures the high efficiency of the wire cutting operation.

[0012] In some embodiments, the inner surface of the sample placement groove has a honeycomb microporous structure and is coated with rosin and / or paraffin.

[0013] By providing a wire cutting fixture provided by the present invention, rosin and / or paraffin are arranged in the sample placement groove, and the physical properties of rosin and / or paraffin are utilized to fix the sample to be cut, which helps to further reduce the probability of rotational deviation during the cutting process of the spherical sample, thereby improving the stability of the wire cutting fixture in clamping the spherical material; at the same time, the fixing method of the sample to be cut is simple, easy to arrange and use, which helps to further improve the efficiency of the wire cutting operation and is conducive to reducing costs and increasing efficiency.

[0014] At the same time, the inner surface of the sample placement groove is provided with a honeycomb microporous structure, which helps to enhance the wettability of rosin and / or paraffin, so as to further improve the fixing effect of the sample carrier on the sample to be cut.

[0015] In some embodiments, both ends of the sample placement slot in the length direction are provided with openings, and any of the openings are collinear with the midline of the sample placement slot in the width direction.

[0016] The wire cutting fixture provided by the present invention has openings at both ends of the sample placement groove in the length direction. On the one hand, it helps to allow excess rosin and / or paraffin to flow out, improves the convenience of clamping the sample to be cut, and ensures the clamping effect of the sample to be cut; on the other hand, the openings are used as tool alignment reference lines. By aligning the cutting line of the wire cutting station with the two openings, precise tool alignment can be achieved, effectively improving tool alignment efficiency and accuracy.

[0017] In some embodiments, a plurality of sample placement grooves are provided on the surface of the sample carrier, and the plurality of sample placement grooves are arranged in parallel and spaced apart along their own width direction, and the width dimensions of the plurality of sample placement grooves are the same; or, the width dimension of at least one of the plurality of sample placement grooves is different from that of the others.

[0018] By using a wire cutting fixture provided by the present invention, a plurality of sample placement grooves are provided on a sample carrier at parallel intervals. During actual operation, it is only necessary to move the sample carrier in steps until the openings of the sample placement grooves are aligned with the cutting lines of the wire cutting stations in sequence, thereby realizing the sequential tool setting operation on a large number of spherical samples. When the widths of the plurality of sample placement grooves are different, the wire cutting fixture can simultaneously meet the wire cutting requirements of spherical samples of different sizes, thereby effectively expanding its scope of application and enhancing its practicality.

[0019] In some embodiments, the sample positioning stage includes a base and a rest platform;

[0020] The platform is arranged on the base for horizontal reciprocating sliding movement to drive the sample carrier to slide synchronously relative to the base;

[0021] The platform is detachably connected to the base.

[0022] In some embodiments, the sample carrier is a flat plate structure;

[0023] The sliding assembly includes a convex strip and a sliding groove; the convex strip is formed on the sample carrier, and the sliding groove is opened on the base. The length direction of the sliding groove is parallel to the sliding direction of the sample carrier, and its cross-sectional size and shape are adapted to the convex strip;

[0024] The convex strip is embedded in the sliding groove and slides relative to the base along the length direction of the sliding groove.

[0025] In some embodiments, the base is a flat plate structure, and the slide groove is provided on the upper side thereof;

[0026] The platform includes a body and a boss, the body is a rectangular block structure, the boss is formed on the lower side of the body and is adapted to the cross-sectional size and shape of the chute; the boss is embedded in the chute and slides relative to the base along the length direction of the chute;

[0027] A connecting ear is formed on one end of the base in the length direction of the chute, and a waist-shaped hole is opened on the connecting ear along the length direction of the chute;

[0028] The body is slidably engaged with the connecting ear along the length direction of the sliding groove;

[0029] A fastening screw is provided on the body corresponding to the connecting ear, and the threaded end of the fastening screw passes through the waist-shaped hole and is screwed into the body until the nut end thereof abuts against the side wall of the connecting ear;

[0030] The fastening screw is slidably fitted relative to the connecting ear along the length direction of the waist-shaped hole.

[0031] The wire cutting fixture provided by the present invention utilizes the sliding cooperation between the convex strip and the slide groove, the fastening screw and the inner wall of the waist-shaped hole to realize the horizontal reciprocating sliding setting of the sample carrier relative to the sample positioning table. The sliding component has a simple structure and is easy to produce and assemble, which effectively reduces the production cost and difficulty of use of the wire cutting fixture and stably improves the tool setting efficiency.

[0032] In some embodiments, the fixing assembly includes a first magnet and a second magnet, and the first magnet and the second magnet are respectively disposed on side walls of the sample carrier and the base that are close to each other.

[0033] In some embodiments, the fixing assembly further includes a third magnet and a fourth magnet, and the third magnet and the fourth magnet are respectively disposed on side walls of the platform and the sample carrier that are close to each other.

[0034] The wire cutting fixture provided by the present invention utilizes a magnetic structure to achieve a detachable connection between the sample carrier, the support table, and the base, that is, to achieve a detachable connection between the sample carrier and the sample positioning table. The fixing component has a simple structure, a high degree of modularity, and is easy to set up, which helps to reduce the production difficulty of the wire cutting fixture and is conducive to further promoting cost reduction and efficiency improvement.

[0035] In some embodiments, a fifth magnet is provided on a side of the nut of the fastening screw close to the connecting ear.

[0036] In the wire cutting fixture provided by the present invention, the fifth magnet is used to adsorb the connecting ear, reducing the probability of the fastening screw detaching from the waist-shaped hole, thereby improving the structural stability of the sample positioning table, improving the overall structural strength of the wire cutting fixture, and ensuring its stable and reliable function.

[0037] Compared with the prior art, the wire cutting fixture provided by the present application has at least one of the following beneficial effects:

[0038] 1. The present invention realizes the clamping of spherical samples by opening a sample groove. The clamping operation of the spherical sample is convenient and not easy to rotate, which effectively improves the clamping efficiency of the spherical sample, improves the cutting accuracy, and reduces the waste of the sample. At the same time, the sample groove, that is, the clamping structure, is simple as a whole and easy to arrange, which is conducive to reducing costs and increasing efficiency. In addition, the sample groove is arranged in a straight line, and the knife can be aligned by sliding the sample carrier to the center line of the width direction of the sample groove and aligning it with the cutting line of the wire cutting station, so that multiple spherical samples of the same size can be clamped on the sample carrier at the same time, and the knife can meet the cutting requirements of multiple spherical samples at one time. The knife has high accuracy and can be operated in large quantities, effectively reducing the deviation of the cutting path and improving the cutting accuracy and cutting efficiency.

[0039] 2. In the present invention, openings are provided at both ends of the sample placement groove in the length direction, a honeycomb microporous structure is provided on the inner surface of the sample placement groove, and rosin and / or paraffin are coated. On the one hand, the openings are used as a tool setting reference line, which effectively improves the tool setting efficiency and accuracy; on the other hand, the tool setting reference is convenient to set, which is conducive to further reducing costs and increasing efficiency; at the same time, the rosin and / or paraffin are combined with the honeycomb microporous structure, the rosin and / or paraffin have high wettability, and the phase change bonding stability between the spherical sample and the wire cutting fixture is strong, which effectively reduces the probability of the spherical sample being offset or rotated during the cutting process, helps to significantly improve the cutting accuracy, and further reduces the probability of wasting sample materials.

[0040] 3. In the present invention, multiple sample placement grooves are arranged at intervals along the width direction of the wire cutting fixture. The width dimensions of the multiple sample placement grooves can be the same or different, so as to meet the requirements of large-scale cutting of spherical samples of the same size or spherical samples of different sizes, effectively improve the cutting efficiency and applicability of the wire cutting fixture, and solve the problem of poor repeat positioning accuracy, with strong practicality.

[0041] 4. In the present invention, the sample carrier achieves millimeter-level repeatable positioning accuracy with the sample positioning table through convex strips and magnets, effectively improving the sample yield and reducing the probability of sample material waste.

[0042] 5. In the present invention, the sliding connection between the platform and the base is achieved by using the matching setting of the fastening screws and the waist-shaped holes. The connection structure is simple and easy to set up, which effectively reduces the production difficulty of the wire cutting fixture and is beneficial to energy saving and cost reduction for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of this solution.

[0044] Figure 1 This is an axonometric diagram and an exploded diagram showing the overall structure of the wire cutting fixture according to an embodiment of the present invention;

[0045] Figure 2 This is a plan view mainly showing the location of the opening in an embodiment of the present invention;

[0046] Figure 3 This is an axonometric diagram illustrating the overall structure of the sample positioning platform according to an embodiment of the present invention;

[0047] Figure 4 This is an axonometric diagram illustrating a method for forming convex strips on a sample carrier according to an embodiment of the present invention;

[0048] Figure 5 This is an axonometric diagram mainly showing the overall structure of the base according to an embodiment of the present invention;

[0049] Figure 6 It is an axonometric diagram mainly showing the overall structure of the backrest according to an embodiment of the present invention.

[0050] Description of reference numerals:

[0051] 1. Sample positioning platform; 11. Base; 111. Slide groove; 112. Connecting ear; 12. Rest; 121. Main body; 122. Boss; 2. Sample carrier; 21. Raised strip; 3. Sample placement slot; 4. Fixing assembly; 41. First magnet; 42. Second magnet; 43. Third magnet; 44. Fourth magnet; 5. Opening; 6. Waist-shaped hole; 7. Fastening screw; 8. Fifth magnet. DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0053] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. As used herein, "one" not only means "only one" but also "more than one."

[0054] In related fields, containerless experimental samples are all 2-3mm spherical samples. For the study of samples for on-orbit experiments and ground-based comparative experiments, it is usually necessary to cut the spherical samples in half, forming two hemispheres, and study the internal structure of the material sample. However, due to the spherical surface of spherical samples, they are not only prone to slip when using traditional mechanical clamps, but also prone to rotational offset during the cutting process, thus cutting the interior of the sample into a C-shaped surface instead of a flat surface, making subsequent testing (such as electron microscopy testing) impossible, resulting in a waste of valuable samples. In addition, traditional fixed fixtures can usually only hold a single sample, resulting in low cutting efficiency and room for improvement.

[0055] In this regard, please refer to the accompanying drawings Figures 1 to 6 In one embodiment, a wire cutting fixture is provided, which is suitable for the wire cutting process of spherical materials (such as crystals, ceramics, glass, etc.), integrating accurate fixation and batch precision tool setting functions to improve the efficiency and accuracy of wire cutting operations and reduce waste of sample materials. It includes a sample positioning table 1 arranged below the wire cutting station and a sample carrier 2 arranged on the sample positioning table 1 for horizontal reciprocating sliding movement, wherein a sample placement groove 3 is opened on the upper side of the sample carrier 2, and the length direction of the sample placement groove 3 extends along a horizontal straight line so that multiple samples to be cut can be placed therein at the same time and adapt to the cutting direction of the wire cutting station; at the same time, a sliding component and a fixing component 4 are also provided between the sample carrier 2 and the sample positioning table 1; the sliding component is used to assist the sample carrier 2 to slide relative to the sample positioning table 1 after multiple samples to be cut are placed in the sample placement groove 3 in turn, until the center line of the sample placement groove 3 in the width direction is aligned with the cutting line of the wire cutting station; the fixing component 4 is used to keep the sample carrier 2 fixed relative to the sample positioning table 1 after the center line of the sample placement groove 3 in the width direction is aligned with the cutting line of the wire cutting station, so as to stably implement the wire cutting action.

[0056] During actual operation, multiple spherical samples are placed in the sample placement groove 3 in sequence along the length direction of the sample placement groove 3 to realize the clamping action of the spherical samples; with the help of the sliding component, the sample carrier 2 slides relative to the sample positioning platform 1 until the center line of the width direction of the sample placement groove 3 is aligned with the cutting line of the wire cutting station to complete the tool setting action; then the fixing component 4 is used to keep the sample carrier 2 fixed relative to the sample positioning platform 1, and the multiple spherical samples in the sample groove 3 can be stably and accurately cut by the wire cutting machine.

[0057] By setting a sample slot 3 on the sample carrier 2 and using the sample slot 3 to support the spherical sample, on the one hand, the difficulty of clamping the spherical sample and the probability of slippage and deviation during the cutting process are reduced, which effectively improves the clamping efficiency of the wire cutting fixture and the cutting accuracy, thereby helping to reduce the waste of precious samples; on the other hand, the spherical sample clamping structure is simple and easy to arrange, which is beneficial for relevant departments to reduce costs and increase efficiency; at the same time, the sample slot 3 is set in a straight line, and multiple spherical samples of the same size can be placed on the sample carrier 2 at the same time, so that multiple spherical samples can be cut after one tool alignment, and the wire cutting operation efficiency is high; at the same time, the tool alignment can be achieved by aligning the center line of the sliding sample carrier 2 to the width direction of the sample slot 3 with the cutting line of the wire cutting station, with high tool alignment accuracy and convenient operation, effectively reducing the cutting path deviation, improving cutting accuracy, and effectively ensuring the wire cutting operation efficiency.

[0058] In one embodiment, based on the above embodiment, specifically, referring to Figure 1 and Figure 2 The sample carrier 2 is a rectangular flat plate structure as a whole and is arranged horizontally, and the sample slot 3 is opened on the upper surface of the sample carrier 2. Of course, the sample carrier 2 can also be set to other shapes such as circular and polygonal, as long as the sample capacity requirements of the sample slot 3 can be met, and there is no restriction on this. When the wire cutting fixture is used to clamp containerless experimental samples, the width range of the sample slot 3 is set to 2-3mm; of course, it can also be set to other width dimensions according to actual needs to meet the clamping requirements of other spherical samples. The inner surface of the sample slot 3 is coated with rosin and / or paraffin, and the rosin and / or paraffin are used for phase change bonding between the sample to be cut and the inner wall of the sample slot 3 to assist the sample to be cut to be fixed in the sample slot 3, reducing the probability of the sample to be cut rotating or deviating during the cutting process; at the same time, as a preferred example of this embodiment, the inner surface of the sample slot 3 is also set to a honeycomb microporous structure to enhance the wettability of rosin and / or paraffin, further improving the stability of the wire cutting fixture in clamping the sample to be cut.

[0059] Furthermore, in this embodiment, openings 5 ​​are provided at both ends of the sample placement groove 3 in the length direction, and any opening 5 extends along the length direction of the sample placement groove 3 and passes through the corresponding side wall of the sample carrier 2 to facilitate the outflow of excess rosin and / or paraffin; and any opening 5 is collinear with the center line of the sample placement groove 3 in the width direction to serve as a tool reference.

[0060] During actual operation, the sample carrier 2 is heated until the rosin and / or paraffin melts, and after the spherical sample is placed in the sample slot 3, the heating is stopped, and the sample carrier 2 is slid until both openings 5 ​​are aligned with the cutting line of the wire cutting station. The fixing component 4 is then used to keep the sample carrier 2 and the sample positioning table 1 fixed, and the wire cutting machine can be started to run according to the preset trajectory to cut the spherical sample in the sample slot 3. After the cutting is completed, the sample carrier 2 is heated again until the rosin and / or paraffin melts, and the cut product is taken out to complete the corresponding wire cutting step. It is worth noting that the wire cutting fixture of the present invention can also be used for the clamping needs of samples of other shapes, for example, polygonal samples. This embodiment is only described by taking the clamping of spherical samples as an example.

[0061] This embodiment can be further configured, referring to Figure 1 and Figure 2 , multiple sample placement grooves 3 are provided on the surface of the sample carrier 2; in order to increase the sample capacity of the sample carrier 2, this embodiment preferably sets multiple sample placement grooves 3 spaced in sequence along the length direction of the sample carrier 2, and multiple sample placement grooves 3 are arranged in parallel and spaced along their own width direction; of course, the embodiments of the present invention do not impose specific restrictions on this, and multiple sample placement grooves 3 can also be spaced in sequence along other directions. This embodiment only uses multiple sample placement grooves 3 spaced in sequence along the length direction of the sample carrier 2 as an example for explanation. In addition, the width dimensions of the multiple sample placement grooves 3 are all the same to facilitate batch cutting of spherical samples of the same size; in other embodiments of the present invention, the width dimension of at least one of the multiple sample placement grooves 3 can also be set to be different from the others, so that the wire cutting fixture can meet the batch cutting requirements of spherical samples of different sizes and enhance its applicability.

[0062] In this embodiment, it is preferred that the length direction of the sample placement groove 3 is perpendicular to the sliding direction of the sample carrier 2 to facilitate knife alignment and cutting.

[0063] Further, refer to Figure 1 and Figure 3 The sample positioning stage 1 includes a base 11 and a support platform 12 ; the support platform 12 and the sample carrier 2 are both arranged on the base 11 for horizontal reciprocating sliding movement.

[0064] In this embodiment, refer to Figure 1 、 Figures 3 to 5The sliding assembly includes a ridge 21 and a groove 111; specifically, the ridge 21 is formed on the sample carrier 2; the base 11 is a rectangular flat plate structure and is arranged horizontally, and the groove 111 is opened on the base 11, and its length direction extends along the length direction of the base 11, and its cross-sectional size and shape are adapted to the ridge 21. In order to improve the stability of the overall structure of the wire cutting fixture, this embodiment preferably sets the ridge 21 to be formed on the lower side of the sample carrier 2, and is located in the middle of the width direction of the sample carrier 2, and extends along the length direction of the sample carrier 2; correspondingly, the groove 111 is opened on the upper side of the base 11, and is located in the middle of the width direction of the base 11; after assembly, the ridge 21 is embedded in the groove 111, and slides relative to the base 11 along the length direction of the groove 111, thereby realizing the horizontal reciprocating sliding of the sample carrier 2 relative to the sample positioning stage 1.

[0065] Reference Figure 6 The platform 12 includes a main body 121 and a boss 122, wherein the main body 121 is a rectangular block structure; the boss 122 is formed in the middle of the lower side of the main body 121, so that the platform 12 as a whole is a T-shaped structure, and the boss 122 is adapted to the cross-sectional size and shape of the slide groove 111; after assembly, the boss 122 is embedded in the slide groove 111 and slides relative to the base 11 along the length direction of the slide groove 111, thereby realizing the horizontal reciprocating sliding of the platform 12 relative to the base 11.

[0066] In addition, in order to improve the integrity of the sample positioning platform 1 structure, refer to Figure 3 and Figure 5 A connecting ear 112 is formed on one end of the base 11 in the length direction of the slide 111. Figure 3 and Figure 5 The connecting ear 112 is provided on the upper side of the base 11. To ensure the parallelism between the central axis of the spherical sample and the cutting line of the wire cutting station, it is preferred in this embodiment that a connecting ear 112 is provided on each side of the width direction of the slide 111 to ensure greater adjustability. After assembly, the body 121 slides and cooperates with the corresponding connecting ear 112 along the length direction of the slide 111. At the same time, a waist-shaped hole 6 is provided on each connecting ear 112 along the length direction of the slide 111. A fastening screw 7 is provided on the body 121 corresponding to each connecting ear 112. The threaded end of the fastening screw 7 passes through the corresponding waist-shaped hole 6 and is screwed into the body 121 until its nut is pressed against the side wall of the corresponding connecting ear 112. The fastening screw 7 slides and cooperates relative to the inner wall of the waist-shaped hole 6 along the length direction of the waist-shaped hole 6 to achieve a sliding connection between the platform 12 and the base 11. It is worth noting that in the containerless experiment, the adjustment amount of the fastening screw 7 relative to the corresponding connecting ear 112 is usually required to be ±8mm.

[0067] In this embodiment, the fixing component 4 is preferably configured as a magnetic connector to improve the fixing efficiency and reduce the production cost; Figure 3The fixing assembly 4 includes a first magnet 41, a second magnet 42, a third magnet 43 and a fourth magnet 44, wherein the first magnet 41 and the second magnet 42 are respectively embedded in the side walls of the sample carrier 2 and the base 11 close to each other; Figure 4 To improve the connection stability, a first magnet 41 is provided on both sides of the ridge 21 on the sample carrier 2, and a second magnet 42 is provided on both sides of the width of the slide groove 111 on the corresponding base 11; Figure 3 , the third magnet 43 and the fourth magnet 44 are respectively arranged on the support platform 12 and the sample carrier 2, and are located on the side where the two are close to each other; in this embodiment, there is no specific restriction on the shape and number of the first magnet 41, the second magnet 42, the third magnet 43 and the fourth magnet 44. In this embodiment, the sample carrier 2 and the sample positioning platform 1 can achieve millimeter-level repeatable positioning accuracy through the sliding fit of the ridge 21 and the slide groove 111, and the corresponding magnetic coupling mode; in actual operation, the sample carrier 2 and the base 11, and the support platform 12 and the base 11 can be blind-plugged, and the module can be replaced within 5 seconds, and the flatness error is controlled within the range of 0.02mm / m².

[0068] In addition, in order to improve the structural strength of the sample positioning platform 1, a fifth magnet 8 is provided on the side of the nut of any fastening screw 7 close to the corresponding connecting ear 112. The fifth magnet 8 is used to attract the corresponding connecting ear 112 to reduce the probability of the fastening screw 7 detaching from the platform 12.

[0069] During actual operation, the sample carrier 2 is heated until the rosin and / or paraffin melts, and after the spherical sample is clamped in the sample slot 3, the heating is stopped, and the support 12 is pushed to slide relative to the base 11. The support 12 pushes the sample carrier 2 to slide synchronously until both openings 5 ​​are aligned with the cutting line of the wire cutting station. After that, due to the magnetic attraction of the first magnet 41 and the second magnet 42, the sample carrier 2 and the sample positioning table 1 are relatively fixed. The wire cutting machine is started and runs according to the preset trajectory to achieve the cutting of the spherical sample. After the cutting is completed, the sample carrier 2 is heated again until the rosin and / or paraffin in the sample slot 3 melts, and the cut product is taken out, and the corresponding wire cutting step is completed.

[0070] Of course, if you want to perform a second batch of cutting of spherical samples of the same size, you only need to reheat the sample carrier 2 until the rosin and / or paraffin are melted, place the second batch of spherical samples to be cut into the sample placement slot 3, and then place the sample carrier 2 back on the base 11. There is no need for a second tool setting operation, which effectively improves the repeat positioning accuracy and further improves the wire cutting efficiency.

[0071] Practical testing has demonstrated that the wire cutting fixture can clamp 12 Φ2.8mm tungsten steel spheres in a single operation in 60 seconds or less, significantly improving clamping efficiency. This improved wire cutting fixture is particularly suitable for batch precision cutting of carbide and glass microspheres. The modular design of this technical solution combines batch processing with rapid positioning. Experiments have shown that the use of this invention can reduce operation time by over 40%, achieving a cutting position repeatability of ±0.1mm.

[0072] The implementation principle of the embodiment of the present invention is as follows: by setting a sample groove 3 on the sample carrier 2, the sample groove 3 is used to support the spherical sample, effectively reducing the difficulty of clamping the spherical sample and the probability of slipping and deflection during the cutting process and damaging the sample material; at the same time, the sample groove 3 is set to be linear, and multiple spherical samples of the same size can be placed on the sample carrier 2 at the same time, so that multiple spherical samples can be cut at one time, which helps to further improve the efficiency of the wire cutting operation; at the same time, the knife can be aligned by sliding the sample carrier 2 to the center line of the width direction of the sample groove 3 and the cutting line of the wire cutting station. The knife alignment has high accuracy and convenient operation, effectively reducing the deviation of the cutting path, and the sample carrier 2 and the sample positioning table 1 can be quickly loaded and unloaded through the convex strip 21 and the slide groove 111 and the magnetic coupling mode, with high repeat positioning accuracy and convenient operation, effectively ensuring the efficiency of the wire cutting operation. In addition, the overall structure of the wire cutting fixture is simple, and it is easy to produce and use, which is beneficial for relevant departments / enterprises to reduce costs and increase efficiency.

[0073] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wire cutting fixture, characterized in that: include: The sample positioning table is located below the wire cutting station; It includes a base and a platform, wherein the platform is arranged on the base for horizontal reciprocating sliding movement; The sample carrier slides synchronously with the support platform relative to the base, is arranged on the sample positioning table in a horizontal reciprocating manner, and is detachably connected to the sample positioning table; The sample placement groove is provided on the upper side of the sample carrier, and its length direction extends along a horizontal straight line, and is used to sequentially place multiple samples to be cut, and is adapted to the cutting direction of the wire cutting station; The sliding assembly and the fixing assembly are both arranged between the sample carrier and the sample positioning table; the sliding assembly includes a convex strip and a slide groove, the convex strip is formed on the sample carrier, and the slide groove is opened on the base, the length direction of the slide groove is parallel to the sliding direction of the sample carrier, and its cross-sectional size and shape are adapted to the convex strip; the convex strip is embedded in the slide groove and slides relative to the base along the length direction of the slide groove, so as to assist the sample carrier to slide relative to the sample positioning table after a plurality of samples to be cut are sequentially placed in the sample placement groove, until the cutting line of the wire cutting station is aligned with the center line of the width direction of the sample placement groove; the fixing assembly is used to keep the sample carrier fixed relative to the sample positioning table after the cutting line of the wire cutting station is aligned with the center line of the width direction of the sample placement groove, so as to stably implement the wire cutting action; The platform includes a body and a boss, the body is a rectangular block structure, the boss is formed on the lower side of the body and is adapted to the cross-sectional size and shape of the chute; the boss is embedded in the chute and slides relative to the base along the length direction of the chute; A connecting ear is formed on one end of the base in the length direction of the chute, and a waist-shaped hole is opened on the connecting ear along the length direction of the chute; The body is slidably engaged with the connecting ear along the length direction of the sliding groove; A fastening screw is provided on the body corresponding to the connecting ear, and the threaded end of the fastening screw passes through the waist-shaped hole and is screwed into the body until the nut thereof abuts against the side wall of the connecting ear; The fastening screw is slidably fitted relative to the connecting ear along the length direction of the waist-shaped hole.

2. The wire cutting fixture according to claim 1, characterized in that: The inner surface of the sample placement groove is a honeycomb microporous structure and is coated with rosin and / or paraffin.

3. A wire cutting fixture according to claim 1 or 2, characterized in that: Both ends of the sample placement groove in the length direction are provided with openings, and any of the openings are collinear with the center line of the sample placement groove in the width direction.

4. The wire cutting fixture according to claim 3, characterized in that: There are multiple sample placement grooves on the surface of the sample carrier, and the multiple sample placement grooves are arranged in parallel and at intervals along their own width direction. The width dimensions of the multiple sample placement grooves are the same; or, the width dimension of at least one of the multiple sample placement grooves is different from that of the others.

5. The wire cutting fixture according to claim 1, characterized in that: The platform is detachably connected to the base.

6. The wire cutting fixture according to claim 1, characterized in that: The sample carrier is a flat plate structure.

7. The wire cutting fixture according to claim 1, characterized in that: The base is a flat plate structure, and the slide groove is opened on the upper side thereof.

8. The wire cutting fixture according to claim 1, characterized in that: The fixing assembly includes a first magnet and a second magnet, and the first magnet and the second magnet are respectively arranged on side walls of the sample carrier and the base that are close to each other.

9. The wire cutting fixture according to claim 1, characterized in that: The fixing assembly further includes a third magnet and a fourth magnet. The third magnet and the fourth magnet are respectively arranged on side walls of the platform and the sample carrier that are close to each other.

10. The wire cutting fixture according to claim 1, characterized in that: A fifth magnet is provided on one side of the nut of the fastening screw close to the connecting ear.

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