An automatic core arranging device for circumferential hole grooves in wire-cut electrospark cutting of tubular parts

Abstract

An automatic core-discharging device for circumferential holes and grooves in wire-cut electrospark cutting of tubular parts comprises a clamping mechanism and a fixture body, wherein a jet channel is arranged inside the fixture body, and the jet channel has a jet nozzle inwardly, and the jet nozzle is located behind the lower hole groove and close to the inner hole wall of the tubular part; the jet channel is provided with at least one first connecting nozzle extending outward; an external fluid jet connector is provided for the jet channel, and the fluid jet connector comprises a second connecting nozzle, a fluid delivery pipeline and a feeding mechanism. This scheme can automatically discharge block cores by arranging a jet channel and a jet nozzle extending inward on the fixture body, and the discharge process is smoother and faster, thereby avoiding the influence of core retention on subsequent wire cutting, and the second connecting nozzle and the first connecting nozzle in the fluid jet connector are driven to automatically separate and combine through the feeding mechanism, so as to ensure the automatic and continuous operation of the wire-cut electrospark machine tool and the core discharge, and meet the needs of automated production.

Description

Technical Field

[0001] The invention relates to the technical field of electric spark wire cutting machine tools, and in particular to an automatic material core discharge device used in electric spark wire cutting circumferential hole groove processing of tubular parts. Background Art

[0002] The electric spark wire cutting device (machine tool) uses the principle of electric spark machining, adopts metal wire as the machining electrode tool, applies a pulse power supply between the workpiece and the electrode wire (copper wire, molybdenum wire), and uses the spark discharge generated between the electrode wire and the workpiece to corrode the workpiece. At the same time, the workpiece and the electrode move in the required shape to cut the workpiece of a certain shape. In order to achieve relatively high cutting accuracy and surface quality, this type of machine tool often needs to cut the cutting shape multiple times.

[0003] In the process of processing a tubular part, it is necessary to perform electric spark wire cutting on its circumferential hole groove. The process diagram of forming the core of the tubular part after processing can be referred to in the attached figure. Figure 1 The tubular part 900 is clamped on the fixture 100 and positioned and fixed by the pressure plate 101 and the core rod 102, and then installed in the electric spark wire cutting machine. After the electrode wire 103 completes a cutting operation, the upper material core 921 formed in the upper hole groove 911 of the tubular part 900 will fall to the vicinity of the lower hole groove 912 below, and the lower material core 922 formed by the lower hole groove 912 below will fall to the outside of the tubular part 900. Such upper and lower material cores 921 and 922 are block structures. Since the upper material core 921 formed in the upper hole groove 911 remains inside the tubular part 900, the upper material core 921 will block the processing path near the lower hole groove 912, interfere with the electrode wire, and thus affect the secondary and subsequent wire cutting of the tubular part.

[0004] In order to prevent the material core from affecting subsequent wire cutting, it is necessary to remove the material core in time during the processing. The current practice is to shut down the EDM wire cutting machine or suspend the wire cutting operation, remove the material core manually or using equipment, and then start the machine for another EDM wire cutting operation. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: in the process of automated continuous production, this kind of shutdown and startup for manual operation is not suitable for automated production, and will greatly affect production efficiency and production progress.

[0005] In view of this, how to solve the problems existing in the prior art of processing the block core produced by the circumferential hole groove of the tubular part by the electric spark wire cutting, which requires stopping the machine or suspending the production and then removing the core manually or using equipment, resulting in the inability to automate processing, reduced productivity, and increased workload of workers, has become the subject to be studied and solved by the present invention. Summary of the invention

[0006] The present invention provides an automatic core discharging device for circumferential holes and grooves cut by electric spark wire cutting of tubular parts, and its purpose is to solve the problems existing in the prior art that when processing block cores generated by electric spark wire cutting of circumferential holes and grooves of tubular parts, it is necessary to stop the machine or suspend production and then remove the cores manually or using equipment, which leads to the inability to automate processing, reduce productivity, increase workers' workload, etc., and realize the automatic discharge of cores when the tubular parts are cut by electric spark wire cutting of circumferential holes and grooves, so as to ensure the automatic and continuous operation of the machine tool.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic core arrangement device for circumferential hole grooves in wire electrospark cutting of tubular parts, the automatic core arrangement device includes a clamping mechanism, the clamping mechanism is used to fix the tubular part, the tubular part is a hollow columnar structure with an opening on at least one side, the tubular part has an upper hole groove located above and a lower hole groove located below after wire electrospark cutting, the clamping mechanism has a fixture body, and its innovation lies in:

[0008] The fixture body is provided with a jet channel extending toward the inside of the tubular part, and the jet channel has a jet nozzle at one end facing the opening direction of the tubular part, and the jet nozzle is located behind the hole groove of the tubular part and close to the inner hole wall of the tubular part; the jet channel is extended outwardly on the fixture body and has at least one external inlet, which is set as the first connection nozzle;

[0009] An external fluid jet connector is provided for the jet channel, and the fluid jet connector corresponds to the jet channel and provides a fluid jet; the fluid jet connector includes a second connecting nozzle, a fluid delivery pipeline and a feeding mechanism, one end of the fluid delivery pipeline is connected to the second connecting nozzle, and the other end is connected to the fluid source, the feeding mechanism has a feeding end, the second connecting nozzle on the fluid jet connector is fixed on the feeding end, and at least one of the first connecting nozzles in the jet channel is located on the feeding path of the feeding mechanism.

[0010] Furthermore, in order to make the clamping of tubular parts more secure and the positioning more precise, and to make the setting of jet nozzles more convenient, the clamping mechanism also includes a pressure plate and a core rod for positioning and fixing the tubular parts, and the jet nozzle is set after the jet channel passes through the core rod and the pressure plate.

[0011] Furthermore, in order to ensure good sealing performance when the second connection nozzle is docked with the first connection nozzle, a sealing member for sealing is provided at at least one of the mating positions of the first connection nozzle and the second connection nozzle.

[0012] Furthermore, in order to allow the feeding part to better drive the fluid jet connector to perform separation and combination movements, the feeding mechanism can adopt a cylinder, a hydraulic cylinder, a motor screw mechanism, a linear motor mechanism, a cam mechanism, a connecting rod mechanism or an electromagnetic drive mechanism.

[0013] Furthermore, in order to meet the processing requirements of tubular parts with graduation requirements, the jet channel is provided with two or more first connecting nozzles extending outwardly away from the opening direction of the tubular parts on the fixture body, and the first connecting nozzles are arranged circumferentially on the fixture body.

[0014] Furthermore, in order to avoid the weakening of the injection force caused by the diversion of the injected fluid, the first connecting nozzle is provided with a one-way valve. When one of the first connecting nozzles is automatically connected with the second connecting nozzle for injection, the one-way valve on the first connecting nozzle opens under the push of the jet pressure, and the first connecting nozzle is connected to the second connecting nozzle and the jet channel, and the one-way valves on the other first connecting nozzles are all in a closed state.

[0015] Furthermore, the jet nozzle is located directly behind or obliquely behind the hole groove of the tubular part to achieve a better jet effect. The jet nozzle has a spray hole, which is a circular hole or a partial annular hole.

[0016] The relevant contents of the present invention are explained as follows:

[0017] 1. In the present invention, the meaning of "front" in "forward", "front end", "front part" and "front" refers to the direction of the opening direction of the tubular part. The meaning of "rear" in "backward", "rear end", "rear part" and "rear" refers to the opposite direction of the opening direction of the tubular part;

[0018] 2. In the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0019] Due to the application of the above scheme, the present invention has the following advantages and effects compared with the prior art:

[0020] 1. The above scheme of the present invention can automatically discharge the block core produced by the circumferential hole groove of the tubular part by the electrospark wire cutting by arranging a jet channel and a jet nozzle extending toward the inside of the tubular part on the fixture body, so as to avoid the core being retained in the tubular part and blocking the hole groove that needs to be cut again, thereby ensuring the smooth progress of multiple continuous cuttings, so that there is no need to stop the machine and then take out the core manually or by instruments during the process of discharging the core, thereby ensuring the continuous progress of automated production, improving production efficiency and liberating labor; it is different from the existing chip removal method adopted in the field of electrospark machining for the electro-erosion products continuously produced during the electrospark machining process. Since the electro-erosion products are fine particles, the working fluid circulation system in the electrospark machining adopts the method of flushing or pumping liquid to discharge the electro-erosion products. Therefore, the existing electrospark machining chip removal structure cannot provide inspiration for the above scheme of the present invention, and it is not easy to think of using the working fluid circulation system to discharge the core;

[0021] 2. In the above solution of the present invention, the jet nozzle is arranged behind the lower hole groove and close to the inner hole wall of the tubular part. When the fluid jet is sprayed toward the material core, the jet direction is directly toward the material core, which can reliably and easily push the material core toward the opening of the tubular part to discharge the material core, thereby shortening the pause time of the next electric spark wire cutting;

[0022] 3. In the above scheme of the present invention, the second connecting nozzle and the first connecting nozzle in the fluid jet connector are driven to automatically separate and connect through the feeding mechanism. Firstly, the tubular parts with the clamping mechanism can be automatically loaded and unloaded on the machine tool by the robot. Secondly, after the clamping mechanism of the tubular parts is positioned and installed on the machine tool, the connection or separation of the connected fluid jet can be automatically realized according to the working requirements, thereby ensuring the automatic operation of the electric spark wire cutting machine and the core discharge, and meeting the needs of automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 It is a schematic diagram of the process of forming a core of a tubular part after processing;

[0024] Attached Figure 2 It is a schematic diagram of the falling position of the feeding core of a tubular part after one cutting;

[0025] Attached Figure 3 It is a schematic diagram showing that the falling position of the feeding core of a tubular part is skewed after one cutting;

[0026] Attached Figure 4 A schematic diagram of the deflection of the loading core when it falls or is discharged;

[0027] Attached Figure 5 It is a schematic diagram of the state when the fluid jet connector and the jet channel are separated in the embodiment of the automatic core-discharging device of the present invention;

[0028] Attached Figure 6for Figure 5 The enlarged schematic diagram of Part I in FIG.

[0029] Attached Figure 7 It is a schematic diagram of the state when the fluid jet connector and the jet channel are connected in the embodiment of the automatic core arrangement device of the present invention;

[0030] Attached Figure 8 This is a schematic diagram of an embodiment of the automatic core arrangement device of the present invention having two or more first connection nozzles;

[0031] Attached Fig. 9 For attachment Figure 8 A local schematic diagram in the direction of FIG.

[0032] Attached Fig.10 For attachment Figure 8 Schematic diagram of the cross section along the BB direction;

[0033] Attached Fig.11 It is a schematic diagram of the process of jet discharge from the loading core in the embodiment of the automatic core discharge device of the present invention;

[0034] Attached Fig.12 It is a schematic diagram of a first change of the sealing part in the embodiment of the automatic core-discharging device of the present invention;

[0035] Attached Fig.13 Schematic diagram of the second change of the sealing part in the embodiment of the automatic core-discharging device of the present invention.

[0036] The various parts of the above drawings are shown as follows:

[0037] 1-clamping mechanism; 11-clamp body; 12-pressing plate; 13-core rod; 2-sealing member; 31-jet channel; 32-jet nozzle; 33-first connecting nozzle; 4-fluid jet connector; 41-second connecting nozzle; 42-fluid delivery pipeline; 43-feeding mechanism; 5-check valve;

[0038] 900- tubular part; 911- upper hole groove; 912- lower hole groove; 921- upper material core; 922- lower material core; 93- opening;

[0039] 100- fixture; 101- pressing plate; 102- mandrel; 103- electrode wire; 104- guide; 105- working table; 106- turntable A axis; 107- chuck. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0041] Figure 2 , Figure 31 is a schematic diagram showing the falling position of the upper material core 921 of a tubular part 900 after one cutting in an embodiment of the present invention. The upper material core 921 formed in the upper hole groove 911 in the tubular part 900 will fall into the inside of the tubular part 900 and will remain near the lower hole groove 912 below. The lower material core 922 formed by the lower hole groove 912 below will fall outside the tubular part 900. The upper and lower material cores 921 and 922 are block structures. Figure 4 FIG. 9 is a schematic diagram showing that the loading core 921 is deflected when falling or being discharged. As the loading core 921 is deflected when falling, Figure 2 , Figure 3 The falling position in the figure is for illustration only. It should be noted that in the present invention, the structure of the tubular part 900 is a hollow columnar structure having an opening 93 on at least one side for the discharge of the core 921. At the same time, the structure of the tubular part 900 is not limited to Figure 1 The structure shown in the figure can be other tubular structures such as square tubes and round tubes, and the shapes of the upper and lower cores 921 and 922 are not limited to Figure 4 As shown in the shape, the shapes of the upper and lower cores 921, 922 are consistent with the actual processed shapes of the upper and lower hole grooves 911, 912. The orientation descriptions of the upper and lower hole grooves 911, 912 and the upper and lower cores 921, 922 such as "upper" are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application. Figures 5 to 13 FIG. 1 is a schematic diagram of the structure of an embodiment of the present invention. Figure 5 , Figure 7 , Figure 8 The electrode wire 103, the chuck 107, the turntable A-axis 106, the guide 104, the work table 105, and the tubular part 900 are drawn in, but the electrode wire 103, the chuck 107, the turntable A-axis 106, the guide 104, the work table 105, and the tubular part 900 are not components of the automatic core arrangement device.

[0042] like Figures 5 to 8As shown, an automatic core-arranging device for circumferential holes and grooves in wire-cut electrospark cutting of a tubular part provided in an embodiment of the present invention comprises a clamping mechanism 1, the clamping mechanism 1 is used to fix the tubular part 900 and to ensure that the opening 93 of the tubular part 900 is not blocked, the clamping mechanism 1 is installed on a chuck 107 after fixing the tubular part 900, the clamping mechanism 1 comprises a fixture body 11, a jet channel 31 extending toward the inside of the tubular part 900 is arranged inside the fixture body 11, the jet channel 31 has a jet nozzle 32 at one end in the direction of the opening 93 of the tubular part 900, the jet nozzle 32 is located behind the hole groove 912 of the tubular part 900 and is adjacent to the inner hole wall of the tubular part 900, the jet channel 31 extends outwardly at least one external inlet on the fixture body 11, and the external inlet is set as a first connecting nozzle 33; an external fluid jet connector 4 is provided for the jet channel 31, the The fluid jet connector 4 corresponds to the jet channel 31 and provides a fluid jet; the fluid jet connector 4 includes a second connecting nozzle 41, a fluid delivery pipe 42 and a feeding mechanism 43, one end of the fluid delivery pipe 42 is connected to the second connecting nozzle 41, and the other end is connected to a fluid source. The fluid source can be provided by the electric spark wire cutting machine itself to provide liquid or gas with a certain pressure to realize the jet, or it can be connected to an external pipe to provide liquid or gas with a certain pressure. The feeding mechanism 43 has a feeding end, and the second connecting nozzle 41 in the fluid jet connector 4 is fixed on the feeding end. One of the first connecting nozzles 33 in the jet channel 31 is located on the feeding path of the feeding mechanism 43. The feeding mechanism 43 can drive the second connecting nozzle 41 to automatically separate and combine with the first connecting nozzle 33 to realize the automatic connection between the second connecting nozzle 41 and the first connecting nozzle 33.

[0043] In order to enable the second connection nozzle 41 and the first connection nozzle 33 to have sealing performance when connected, a sealing member 2 is provided at the mating position of at least one of the first connection nozzle 33 and the second connection nozzle 41. The sealing member 2 can be made of soft deformable materials such as silicone and rubber, and has good sealing performance and durability, but the present invention is not limited thereto.

[0044] In order to meet the need of rotating the tubular part 900 axially by a certain angle and then processing other holes and grooves, such as Figure 8 , Fig.10As shown, the jet channel 31 is provided with two or more first connecting nozzles 33 extending outwardly on the fixture body 11 away from the opening 93 of the tubular part 900, and each of the first connecting nozzles 33 is provided with a one-way valve 5. When one of the first connecting nozzles 33 is automatically connected to the second connecting nozzle 41 for jetting, the one-way valve 5 on the first connecting nozzle 33 opens under the push of the jet pressure, and the first connecting nozzle 33 is connected to the second connecting nozzle 41 and the jet channel 31, and the one-way valves 5 on the other first connecting nozzles 33 are all in a closed state to prevent the injected fluid from being diverted and causing the injection force to be weakened.

[0045] The working process of an automatic core-arranging device for circumferential hole grooves in wire-cut electrospark cutting of a tubular part according to an embodiment of the present invention is as follows:

[0046] The fluid jet connector 4 and the corresponding feeding mechanism 43 are fixedly installed on the working table 105 of the machine tool. After the tubular part 900 is positioned and fixed by the clamping mechanism 1 outside the machine, it is grabbed by a robot or manually and installed on the chuck 107 of the electric spark wire cutting machine. The chuck 107 can be installed in the turntable A axis 106 or does not need to be installed in the turntable A axis 106. The whole device is installed on the working table 105. The guide 104 of the machine tool is located above and below the tubular part 900. The guide 104 has an electrode wire 103. The state after the clamping mechanism 1 is installed is as shown in the figure. Figure 5 As shown, the second connection nozzle 41 corresponds to the first connection nozzle 33; the feeding mechanism 43 drives the second connection nozzle 41 to move to one side of the direction of the first connection nozzle 33, so that the second connection nozzle 41 is connected to the first connection nozzle 33 and is in a connection sealing state. The state when the fluid jet connector 4 is connected to the jet channel 31 is as shown in FIG. Figure 7 At the same time, after the machine tool completes the first electric spark wire cutting of the upper and lower hole grooves 911 and 912 of the tubular part 900, the upper material core 921 in the upper hole groove 911 of the tubular part 900 falls to the vicinity of the lower hole groove 912 below and stays inside the tubular part 900. At this time, the fluid delivery pipeline 42 connected to the fluid jet connector 4 is provided with a jet by the fluid source, which is sprayed from the jet nozzle 32 to the upper material core 921 after passing through the second connecting nozzle 41, the first connecting nozzle 33, and the jet channel 31, so that the upper material core 921 falls from the opening 93 under the driving force of the jet. The process of the jet discharging the upper material core 921 is shown in FIG. Fig.11. After the removal of the feeding core 921 is completed, the machine tool can perform subsequent wire cutting on the circumferential hole groove that has been wire cut once. After the subsequent wire cutting is completed, the feeding mechanism 43 separates the second connecting nozzle 41 on the fluid jet connector 4 from the first connecting nozzle 33 on the clamping mechanism 1, and the turntable A axis 106 can be indexed to process the next hole groove of the tubular part 900; if the tubular part 900 does not need to be cut for the next hole groove, the tubular part 900 with the clamping mechanism 1 can be handed over by the robot to carry out the next processing cycle. It should also be noted that the process of driving the second connecting nozzle 41 on the fluid jet connector 4 and the first connecting nozzle 33 on the jet channel 31 to automatically separate and combine and the electric spark wire cutting process of the tubular part 900 can be reasonably controlled by an automated program, and the embodiments of the present invention are not limited to this.

[0047] Through the implementation of the above technical scheme, compared with the prior art, the embodiment of the present invention drives the second connecting nozzle 41 and the first connecting nozzle 33 to automatically separate and combine through the feeding mechanism 43, and realizes the automatic connection between the second connecting nozzle 41 and the first connecting nozzle 33 by arranging the corresponding jet channel 31, the first connecting nozzle 33, and the jet nozzle 32 on the clamping mechanism 1, and can discharge the block-shaped loading core 921 after one electric spark wire cutting, so as to avoid the loading core 921 from being retained in the tubular part 900 and blocking the upper and lower hole grooves 911 and 912 that need to be wire cut again, thereby ensuring the smooth progress of multiple cuttings and realizing fully automated processing.

[0048] In the embodiment of the present invention, the clamping mechanism 1 includes, in addition to the clamp body 11, a pressure plate 12 and a core rod 13 for positioning and fixing the tubular part 900. The jet channel 31 passes through the core rod 13 and the pressure plate 12 and is then provided with a jet nozzle 32. The jet nozzle 32 is arranged toward the lower hole groove 912, so that the fluid ejected through the fluid jet connector 4 can discharge the loading core 921 from the opening 93 of the tubular part 900, making the clamping of the tubular part 900 more secure and the positioning more precise, and making the setting of the jet nozzle 32 more convenient.

[0049] In the embodiment of the present invention, the jet nozzle 32 is located directly behind or obliquely behind the hole groove 912 of the tubular part 900, and the jet nozzle 32 has a spray hole corresponding to the jet channel 31, such as Fig. 9As shown, the shape of the spray hole can be made into a partial annular structure according to the lower structure of the inner hole of the tubular part 900. When the fluid jet is sprayed to the upper material core 921, the area where the jet rushes to the upper material core 921 is large enough, so as to increase the driving force of the jet on the upper material core 921, and can more easily push the upper material core 921 to the opening 93. Even if the upper material core 921 deflects too much during the falling process and the discharge process, it can still be sprayed out. However, it should be noted that the embodiment of the present invention is not limited to this, and the spray hole can also adopt other circular hole structures or other structures with the same effect.

[0050] With respect to the above-mentioned embodiment, possible changes of the present invention are described as follows:

[0051] 1. In the above embodiments, Figure 6 As shown, the seal 2 is located on the second connection nozzle 41. The second connection nozzle 41 is connected with the first connection nozzle 33 under the drive of the feeding mechanism 43. At this time, the seal 2 is close to the first connection nozzle 33 so that the connection between the two has a sealing performance; the seal 2 can be set on the first connection nozzle 33, or the second connection nozzle 41 and the first connection nozzle 33 can be set with the seal 2. Of course, the present invention is not limited to this, and the form and structure of setting the seal 2 can also be changed. For example, a sealing ring or a sealing gasket can be directly set on the second connection nozzle 41 and the first connection nozzle 33; or Fig.12 As shown, the matching part of the second connection nozzle 41 and the first connection nozzle 33 is set to a partial cone, and the outer cone part of the second connection nozzle 41 is made of a soft deformable material, and the inner cone part of the first connection nozzle 33 is made of a hard material, so that the seal 2 on the second connection nozzle 41 plays a sealing role when matching with the conical surface of the first connection nozzle 33; it can also be as shown Fig.13 As shown, the fitting portion of the second connection nozzle 41 is configured to be a spherical shape or the like made of a soft deformable material.

[0052] 2. In the above embodiments, the feeding mechanism 43 for driving the second connecting nozzle 41 can adopt a linear driving structure, a swing driving structure or other structures that can also realize the automatic separation and combination of the second connecting nozzle 41 and the first connecting nozzle 33, such as Figure 5 In the embodiment shown, a cylinder is used, and an external pipe is connected to one end of the cylinder to provide compressed air, but the embodiment of the present invention is not limited to this, and can also be a hydraulic cylinder, a motor screw mechanism, a linear motor mechanism, a cam mechanism, a connecting rod mechanism or an electromagnetic drive mechanism and other related mechanisms. These mechanisms can realize the feeding action of the second connecting nozzle 41, and allow the first connecting nozzle 33 and the second connecting nozzle on the feeding path of the feeding mechanism 43 to automatically separate and combine. This can be understood and accepted by those skilled in the art, so the relevant mechanisms will not be described in detail.

[0053] 3. In the above embodiment, the jet channel 31 is provided with two or more first connecting nozzles 33 extending outwardly from the opening 93 of the tubular part 900 on the fixture body 11. It is required that when one of the first connecting nozzles 33 is automatically connected with the second connecting nozzle 41 for jetting, the first connecting nozzle 33 is in a connected state with the second connecting nozzle 41 and the jet channel 31, and the other first connecting nozzles 33 are in a closed state. In order to meet this requirement, Figure 8 and Fig.10 As shown, each first connecting nozzle 33 has a one-way valve 5. When one of the first connecting nozzles 33 is connected to the fluid jet, the one-way valve 5 on the first connecting nozzle 33 opens under the push of the jet pressure, and the one-way valves 5 of the other first connecting nozzles 33 are closed to prevent fluid leakage and diversion, thereby avoiding the weakening of the injection force caused by the diversion of the injected fluid. However, the present invention is not limited to this, and other structures that can control the connection state and the closed state of the first connecting nozzle 33 are also understandable and acceptable to those skilled in the art.

[0054] 4. In the above embodiment, if Fig.10 As shown, the first connection nozzle 33 is arranged circumferentially on the clamp body 11. Of course, the first connection nozzle 33 can also be arranged obliquely on the side or surface of the clamp body 11. The oblique arrangement can also be used to set an external fluid jet connector 4 to achieve related connection and jet functions, but the present invention is not limited to this.

[0055] 5. In the above embodiment, the structure of the tubular part 900 is not limited to Figure 2 The structure shown in the figure can be other tubular structures such as square tubes, round tubes, etc. with an opening 93 on one side, and the clamping mechanism 1 is not limited to Figure 5 The structure shown may also be other structures that can effectively clamp the tubular part 900, that is, the key point is that a jet channel 31 and a jet nozzle 32 can be set on the clamping mechanism 1 for clamping the tubular part 900, so that the cut feeding core 921 can be automatically removed.

[0056] Those skilled in the art will understand that the automated operation of the feeding mechanism, wire EDM, and fluid source providing a jet in the above-mentioned embodiment can be achieved by instructing the relevant hardware through a program, and the program is stored in the control system of the machine tool, such as an industrial computer, a single-chip microcomputer, a PLC controller, etc. Since the relevant program is not the inventive point of the present invention, it is not specifically introduced in this article.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic core arranging device for circumferential hole grooves in wire-cut electrospark cutting of tubular parts, the automatic core arranging device comprising a clamping mechanism (1), the clamping mechanism (1) being used to fix a tubular part (900), the tubular part (900) being a hollow columnar structure having an opening (93) on at least one side, the tubular part (900) having an upper hole groove (911) located at the top and a lower hole groove (912) located at the bottom after wire-cut electrospark cutting, the clamping mechanism (1) having a fixture body (11), characterized in that: The fixture body (11) is provided with a jet channel (31) extending toward the inside of the tubular part (900); the jet channel (31) has a jet nozzle (32) at one end thereof facing the opening (93) of the tubular part (900); the jet nozzle (32) is located behind the lower hole groove (912) of the tubular part (900) and is adjacent to the inner hole wall of the tubular part (900); the jet channel (31) is provided with at least one external inlet extending outwardly on the fixture body (11); the external inlet is set as a first connecting nozzle (33); An external fluid jet connector (4) is provided for the jet channel (31), the fluid jet connector (4) corresponds to the jet channel (31) and provides a fluid jet; the fluid jet connector (4) comprises a second connecting nozzle (41), a fluid delivery pipe (42) and a feeding mechanism (43); one end of the fluid delivery pipe (42) is connected to the second connecting nozzle (41) and the other end is connected to a fluid source; the feeding mechanism (43) has a feeding end, the second connecting nozzle (41) is fixed on the feeding end, and at least one of the first connecting nozzles (33) in the jet channel (31) is located on the feeding path of the feeding mechanism (43).

2. The automatic core arrangement device according to claim 1, characterized in that: The clamping mechanism (1) further comprises a pressing plate (12) and a core rod (13) for positioning and fixing the tubular part (900), and the jet channel (31) passes through the core rod (13) and the pressing plate (12), and the jet nozzle (32) is arranged thereafter.

3. The automatic core arrangement device according to claim 1, characterized in that: A sealing member (2) for sealing is provided at at least one of the mating positions of the first connecting nozzle (33) and the second connecting nozzle (41).

4. The automatic core arrangement device according to claim 1, characterized in that: The feeding mechanism (43) adopts an air cylinder, a hydraulic cylinder, a motor screw mechanism, a linear motor mechanism, a cam mechanism, a connecting rod mechanism or an electromagnetic drive mechanism.

5. The automatic core arrangement device according to claim 1, characterized in that: The jet channel (31) is provided with two or more first connecting nozzles (33) extending outwardly from the opening (93) of the tubular part (900) on the clamp body (11), each of the first connecting nozzles (33) being provided with a one-way valve (5), wherein when one of the first connecting nozzles (33) is automatically connected to the second connecting nozzle (41) for jetting, the one-way valve (5) on the first connecting nozzle (33) is opened under the push of the jet pressure, and the first connecting nozzle (33) is in a connected state with the second connecting nozzle (41) and the jet channel (31), and the one-way valves (5) on the other first connecting nozzles (33) are in a closed state.

6. The automatic core arrangement device according to claim 5, characterized in that: The first connection nozzles (33) are arranged on the clamp body (11) along the circumferential direction.

7. The automatic core arrangement device according to claim 1, characterized in that: The jet nozzle (32) is located directly behind or obliquely behind the lower hole groove (912) of the tubular part (900).

8. The automatic core arrangement device according to claim 1, characterized in that: The jet nozzle (32) has a spray hole corresponding to the jet channel (31), and the structure of the spray hole is partially annular.

9. The automatic core arrangement device according to claim 1, characterized in that: The jet nozzle (32) has a spray hole corresponding to the jet channel (31), and the spray hole is a circular hole.

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