Linear cutting clamp

Abstract

The invention provides a linear cutting clamp which comprises a sample positioning table and a sample carrying table horizontally arranged on the sample positioning table in a reciprocating sliding mode, a sample containing groove is formed in the upper side of the sample carrying table, and the length direction of the sample containing groove extends in the horizontal straight line so that a plurality of samples to be cut can be placed in the sample containing groove at the same time and the sample containing groove can be matched with the cutting direction of a linear cutting station; meanwhile, a sliding assembly and a fixing assembly are further arranged between the sample carrying table and the sample positioning table; the sliding assembly is used for assisting the sample carrying table to slide relative to the sample positioning table after a plurality of samples to be cut are sequentially placed into the sample placing groove until the center line in the width direction of the sample placing groove is aligned with the cutting line of the linear cutting station; the fixing assembly is used for keeping the sample carrying table fixed relative to the sample positioning table after the center line in the width direction of the sample containing groove is aligned with the cutting line of the linear cutting station so that the linear cutting action can be stably implemented. The device integrates accurate fixing and batch accurate tool setting functions, the linear cutting operation efficiency and accuracy are effectively improved, and sample waste is reduced.

Description

Technical Field

[0001] The 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 pulse 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, spherical materials (such as crystals, ceramics, glass, etc.) are cut in half in containerless experiments.

[0003] In the related art, the containerless experimental samples are all spherical samples of 2-3mm. For the research of on-orbit experimental samples and ground comparative experimental samples, 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 the spherical samples have spherical surfaces, they are not only prone to slipping when using traditional mechanical clamps, but also prone to rotational deviation during the cutting process, resulting in the internal cutting surface of the spherical sample being a C-shaped surface rather than a plane, making it impossible to perform subsequent tests such as electron microscopy, 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; and the traditional wire cutting alignment method is mostly manual visual, the adjustment of the cutting path deviation is large, and the cutting result accuracy is low. 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 object 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 waste of samples.

[0005] The technical solution provided by the present invention is 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, which is horizontally reciprocatingly slidably disposed on the sample positioning table and is detachably connected to the sample positioning table;

[0009] A 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 a plurality of samples to be cut, and is adapted to the cutting direction of the wire cutting station;

[0010] A sliding component and a fixing component, both of which are arranged between the sample carrier and the sample positioning table; the sliding component is used to assist the sample carrier to slide relative to the sample positioning table 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 component is used to keep the sample carrier fixed relative to the sample positioning table 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] By using a wire cutting fixture provided by the present invention, a sample groove is provided on a sample carrier, and the sample groove is used to support the spherical sample, so that the difficulty of clamping the spherical sample and the probability of slippage and deviation during the cutting process are reduced, thereby effectively improving 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 a plurality of spherical samples of the same size can be placed on the sample carrier at the same time, so that a plurality of spherical samples can be cut by 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, 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 the 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 of the spherical sample, thereby improving the stability of the wire cutting fixture in clamping the spherical material; at the same time, the method for fixing 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 beneficial to reducing costs and increasing efficiency.

[0014] At the same time, providing the inner surface of the sample placement groove with a honeycomb microporous structure helps to enhance the wettability of rosin and / or paraffin, so as to further improve the fixation 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] A 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 is helpful for excess rosin and / or paraffin to flow out, thereby improving the convenience of clamping the sample to be cut and ensuring the clamping effect of the sample to be cut; on the other hand, the opening is used as a tool alignment reference line, and precise tool alignment can be achieved by aligning the cutting line of the wire cutting station with the two openings, thereby effectively improving the 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 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 in parallel and at 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 sequential tool alignment operations 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 practicability.

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

[0020] The support table is horizontally reciprocatingly slidably arranged on the base 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 slide groove; the convex strip is formed on the sample carrier, 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;

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

[0025] In some embodiments, the base is a flat plate structure, and the slide groove is opened 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 slide groove; the boss is embedded in the slide groove and slides relative to the base along the length direction of the slide groove;

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

[0028] The body is slidably matched with the connecting plate along the length direction of the slide groove;

[0029] A fastening screw is provided on the main 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 main body until the nut end thereof abuts against the side wall of the connecting plate;

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

[0031] A 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 steadily 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] A wire cutting fixture provided by the present invention utilizes a magnetic attraction structure to achieve a detachable connection between the sample carrier and the support and base, that is, a detachable connection between the sample carrier and the sample positioning table is achieved. The fixing component has a simple structure, a high degree of modularization, 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 plate.

[0036] In the wire cutting fixture provided by the present invention, the fifth magnet is used to adsorb the connecting plate, reducing the probability of the fastening screws detaching from the waist-shaped holes, thereby improving the structural stability of the sample positioning table, improving the overall structural strength of the wire cutting fixture, and ensuring the stability and reliability of its functions.

[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 samples. 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 alignment can be achieved by sliding the sample carrier to align the center line of the width direction of the sample groove 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 cutting requirements of multiple spherical samples can be met by one knife alignment. The knife alignment has high accuracy and can be operated in large quantities, which effectively reduces the deviation of the cutting path and improves 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 opening is used as a tool setting reference line to effectively improve 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, rosin and / or paraffin are combined with the honeycomb microporous structure, and 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 rotating 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, a plurality of sample placing grooves are arranged at intervals along the width direction thereof, and the width dimensions of the plurality of sample placing grooves may be the same or different, so as to meet the requirements for mass 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, and the wire cutting fixture has strong practicality.

[0041] 4. In the present invention, the sample carrier achieves millimeter-level repeated 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 the coordinated 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 the present solution.

[0044] Figure 1 The embodiment of the present invention mainly embodies the isometric schematic diagram and exploded diagram of the overall structure of the wire cutting fixture;

[0045] Figure 2 It is a plan view mainly showing the opening position of the embodiment of the present invention;

[0046] Figure 3 It is an axonometric schematic diagram mainly showing the overall structure of the sample positioning platform according to an embodiment of the present invention;

[0047] Figure 4 is an isometric schematic diagram of an embodiment of the present invention mainly showing a method for forming convex strips on a sample carrier;

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

[0049] Figure 6 It is an axonometric schematic 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 table; 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 implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0053] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0054] In the relevant field, the containerless experimental samples are all 2-3mm spherical samples. For the research 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 surfaces, they are not only prone to slipping when using traditional mechanical clamps, but also prone to rotational deviation during the cutting process, thereby cutting the inside of the sample into a C-shaped surface instead of a flat surface, making it impossible to perform subsequent tests (such as electron microscope tests), resulting in a waste of precious samples; and traditional fixed fixtures can usually only fix a single sample, with low cutting efficiency, which needs to be improved.

[0055] In this regard, please refer to the accompanying drawings of the specification 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. The sample positioning device comprises a sample positioning platform 1 arranged below the wire cutting station, and a sample carrier 2 arranged on the sample positioning platform 1 for horizontal reciprocating sliding movement, wherein a sample placement groove 3 is provided 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 a plurality of samples to be cut can be placed therein at the same time, and the sample placement groove 3 is adapted 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 platform 1; the sliding component is used to assist the sample carrier 2 to slide relative to the sample positioning platform 1 after a plurality of 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 platform 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] In 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, so that the clamping action of the spherical samples can be realized; 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, so that the wire cutting machine can be used to stably and accurately cut the multiple spherical samples in the sample groove 3.

[0057] By setting a sample groove 3 on the sample carrier 2 and using the sample groove 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 groove 3 is arranged 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 groove 3 with the cutting line of the wire cutting station, the tool alignment has high accuracy, convenient operation, effectively reduces the cutting path deviation, improves the cutting accuracy, and effectively ensures 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 the containerless experimental sample, 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 the phase change bonding of 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, and reduce the probability of the sample to be cut rotating and 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, and further improve the stability of the wire cutting fixture clamping the sample to be cut.

[0059] Furthermore, in this embodiment, openings 5 ​​are provided at both ends of the sample placement slot 3 in the length direction, and any opening 5 extends along the length direction of the sample placement slot 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 colinear with the center line of the sample placement slot 3 in the width direction to be used as a tool alignment 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 the two openings 5 ​​are aligned with the cutting line of the wire cutting station, and then the fixing component 4 is 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 only takes the clamping of spherical samples as an example for explanation.

[0061] This embodiment can be further configured, referring to Figure 1 and Figure 2 , there are multiple sample placement grooves 3 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 to be arranged in sequence and at intervals along the length direction of the sample carrier 2, and multiple sample placement grooves 3 are arranged in parallel and at intervals 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 arranged in sequence and at intervals along other directions. This embodiment only takes multiple sample placement grooves 3 arranged in sequence and at intervals 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 the same, so as to facilitate batch cutting of spherical samples of the same size; in other embodiments of the present invention, at least one of the multiple sample placement grooves 3 can also be set to have a width dimension 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 to set the length direction of the sample placement groove 3 to be 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 platform 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 5, the sliding assembly includes a convex strip 21 and a slide groove 111; specifically, the convex strip 21 is formed on the sample carrier 2; the base 11 is a rectangular flat plate structure and is arranged horizontally, and the slide 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 convex strip 21. In order to improve the stability of the overall structure of the wire cutting fixture, the present embodiment preferably sets the convex strip 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 slide 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 convex strip 21 is embedded in the slide groove 111, and slides relative to the base 11 along the length direction of the slide groove 111, so as to realize the horizontal reciprocating sliding of the sample carrier 2 relative to the sample positioning platform 1.

[0065] Reference Figure 6 The platform 12 includes a body 121 and a boss 122, wherein the body 121 is a rectangular block structure; the boss 122 is formed in the middle of the lower side of the body 121, so that the platform 12 is a T-shaped structure as a whole, and the cross-sectional size and shape of the boss 122 are adapted to 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, so as to realize 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 5 is formed on one end of the base 11 in the length direction of the slide groove 111, referring to Figure 3 and Figure 5 , the connecting ear 112 is arranged on the upper side of the base 11. In order 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 the connecting ear 112 is provided on each side of the width direction of the slide slot 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 slot 111; at the same time, a waist-shaped hole 6 is opened on any connecting ear 112 along the length direction of the slide slot 111; a fastening screw 7 is provided on the body 121 corresponding to any connecting ear 112, and 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, and 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 realize the sliding connection between the platform 12 and the base 11. It is worth noting that in the container-free experiment, the adjustment amount of the fastening screw 7 relative to the corresponding connecting plate 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 convex strip 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 platform 12 and the sample carrier 2, and are located on the sides 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 cooperation of the convex strip 21 and the slide groove 111, and the corresponding magnetic coupling mode; in actual operation, the sample carrier 2 and the base 11, the platform 12 and the base 11 can be blindly plugged, and the module replacement can be completed within 5 seconds, and the flatness error is controlled at 0.02mm / m 2 within the range.

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

[0069] In 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 platform 12 is pushed to slide relative to the base 11. The support platform 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 platform 1 are relatively fixed, and the wire cutting machine is started to run 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 finished product after cutting is taken out, and the corresponding wire cutting step can be completed.

[0070] Of course, if a second batch of spherical samples of the same size are to be cut, it is only necessary 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. No secondary tool setting operation is required, which effectively improves the repeat positioning accuracy and further improves the wire cutting efficiency.

[0071] According to actual tests, the wire cutting fixture takes ≤60 seconds to clamp 12 Φ2.8mm tungsten steel balls at a time in continuous operation, which greatly improves the clamping efficiency. This improved wire cutting fixture is particularly suitable for batch precision cutting of cemented carbide microspheres and glass microspheres. The technical solution realizes the organic unity of batch processing and rapid positioning through modular combined structural design. Experiments show that the use of the present invention can reduce the operation time by more than 40%, and the cutting position repeatability accuracy reaches ±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, which effectively reduces the difficulty of clamping the spherical sample and the probability of slippage and damage to the sample material during the cutting process; at the same time, the sample groove 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 at one time, which helps to further improve the efficiency of wire cutting; 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 is high in accuracy and easy to operate, which effectively reduces the deviation of the cutting path, and the rapid loading and unloading of the sample carrier 2 and the sample positioning platform 1 is achieved through the convex strip 21 and the slide groove 111 and the magnetic coupling mode, with high repeated positioning accuracy and convenient operation, which effectively ensures the efficiency of wire cutting. In addition, the overall structure of the wire cutting fixture is simple, and it is easy to produce and use, which is beneficial to the 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 is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as the protection scope 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; A sample carrier, which is horizontally reciprocatingly slidably disposed on the sample positioning table and is detachably connected to the sample positioning table; A 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 a plurality of samples to be cut, and is adapted to the cutting direction of the wire cutting station; A sliding component and a fixing component, both of which are arranged between the sample carrier and the sample positioning table; the sliding component is used to assist the sample carrier to slide relative to the sample positioning table after multiple samples to be cut are placed in the sample placement groove in sequence, 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 component 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.

2. A 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. A 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, and 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 sample positioning platform includes a base and a support platform; The support table is horizontally reciprocatingly slidably arranged on the base to drive the sample carrier to slide synchronously relative to the base; The platform is detachably connected to the base.

6. A wire cutting fixture according to claim 5, characterized in that: The sample carrier is a flat plate structure; The sliding assembly includes a convex strip and a slide groove; the convex strip is formed on the sample carrier, 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.

7. A wire cutting fixture according to claim 6, characterized in that: The base is a flat plate structure, and the slide groove is opened on the upper side thereof; 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 slide groove; the boss is embedded in the slide groove and slides relative to the base along the length direction of the slide groove; A connecting ear is formed on one end of the base in the length direction of the slide slot, and a waist-shaped hole is formed on the connecting ear along the length direction of the slide slot; The body is slidably matched with the connecting plate along the length direction of the slide groove; A fastening screw is provided on the main 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 main body until the nut thereof is pressed against the side wall of the connecting plate; The fastening screw is slidably matched relative to the connecting plate along the length direction of the waist-shaped hole.

8. A wire cutting fixture according to any one of claims 5 to 7, 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 the side walls of the sample carrier and the base which are close to each other.

9. A wire cutting fixture according to any one of claims 5 to 7, characterized in that: The fixing assembly further includes a third magnet and a fourth magnet, and the third magnet and the fourth magnet are respectively arranged on the side walls of the platform and the sample carrier that are close to each other.

10. The wire cutting fixture according to claim 7, characterized in that: A fifth magnet is provided on one side of the nut of the fastening screw close to the connecting plate.

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