A bow and a method of processing the same

Abstract

The present application relates to the technical field of tire manufacturing, and particularly relates to a segment and a processing method thereof, wherein the segment comprises a cover, a base, a middle sleeve insert ring, a plurality of sliding blocks and a plurality of bolts, one side of the cover is detachably connected with the inside of the middle sleeve insert ring through a part of the bolts, the bottom of the middle sleeve insert ring is detachably provided with the middle sleeve through a part of the bolts, the inside of each sliding block is lapped with a pattern block, and the segment comprises an electric spark cutting machine tool and a ring rolling machine, the electric spark cutting machine tool comprises an electrical module and a mechanical module, the electrical module comprises an image acquisition module, a data collection module, a discharge state prediction module and an upper computer control program module. The present application has the effects that the relationship between the spark characteristics and the discharge state is summarized based on the collected data, the processing state is accurately predicted and tracked, the discharge frequency and power are controlled in real time, the processing parameters are controlled, and the precision of the segment processing is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire manufacturing, in particular to an arcuate seat and a processing method thereof. BACKGROUND

[0002] In the tire production process, vulcanization is the last process, and the vulcanization temperature is mainly transmitted to the inside of the tire through the capsule or the mold by the vulcanization medium. The heat transmitted can cause certain chemical reactions of the rubber compound, and finally form a super-elastic durable material, so as to ensure the requirements of tire performance. Therefore, the vulcanization temperature has a very important influence on the vulcanization of the tire, and the temperature transmission effect of the existing arcuate seat is insufficient, and the pattern block temperature difference is high.

[0003] The existing arcuate seat processing mainly relies on the research of electric spark wire cutting processing, which is mostly based on the identification of discharge state based on the processing pulse waveform, so as to control the processing parameters and improve the processing technology. The existing part of the electric spark wire cutting processing is insufficient in monitoring and controlling the electric spark process, and is not convenient for real-time response. SUMMARY

[0004] In order to improve the temperature transmission effect of the arcuate seat and strengthen the electric spark control effect during the processing of the arcuate seat, the present application provides an arcuate seat and a processing method thereof.

[0005] The arcuate seat and the processing method thereof provided by the present application adopt the following technical scheme:

[0006] An arcuate seat and a processing method thereof, the arcuate seat comprises an upper cover, a base, a middle sleeve insert ring, a plurality of sliding blocks and a plurality of bolts, one side of the upper cover is detachably connected with the inside of the middle sleeve insert ring through a part of the bolts, the bottom of the middle sleeve insert ring is detachably provided with a middle sleeve through a part of the bolts, the inside of each sliding block is lapped with a pattern block, and the arcuate seat comprises an electric spark cutting machine tool and a ring rolling machine, the electric spark cutting machine tool comprises an electrical module and a mechanical module, the electrical module comprises an image acquisition module, a data collection module, a discharge state prediction module and an upper computer control program module;

[0007] The mechanical module comprises a machine tool, a high-speed CCD camera, two noise sensors, a current sensor and a voltage sensor, and the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the electrical module.

[0008] Preferably, the image acquisition module is in communication connection with a high-speed CCD camera, the data collection module includes an NI data acquisition card, the discharge state prediction module, the image acquisition module and the host computer control program module are in communication connection with the NI data acquisition card, and the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the host computer control program module.

[0009] The discharge state prediction module includes predicted discharge state data, and the host computer control program module includes machine tool control, data acquisition and saving and data analysis.

[0010] Preferably, one of the noise sensors collects the acoustic emission signal generated by the spark explosion, and the other noise sensor collects the noise emission signal of the wire-cut electric discharge machine body, and the two-way acoustic emission includes the acoustic emission signal generated by the spark explosion and the noise emission signal of the wire-cut electric discharge machine body.

[0011] Preferably, the high-speed CCD camera collects the spark image of the electric spark, extracts the spark image information in the spark image, inputs the spark image information into the host computer control program module, outputs the predicted discharge state data corresponding to the spark image from the host computer control program module, and the host computer control program module judges the predicted discharge state to adjust the thickness of the electric spark wire.

[0012] By adopting the above technical scheme, the relationship between the spark characteristics and the discharge state is summarized through the collected data, the discharge gap voltage, the spark discharge frequency, the feeding speed, the main signal of the electric spark sound source and the machining noise signal and other data are detected in real time and on line through the acoustic emission sensor, so that the host computer control program module can accurately predict and track the machining state according to the information of the spark image, control the discharge frequency and power in real time, thereby controlling the machining parameters and improving the precision of the bow-shaped seat machining.

[0013] Preferably, the ring rolling machine includes a numerical control module and a body, the numerical control module includes a PLC processor, the inside of the body is fixedly connected with a low-pass filter, a digital filter, a vibration sensor and a laser displacement sensor, and the low-pass filter, the digital filter, the vibration sensor and the laser displacement sensor are in communication connection with the PLC processor; the PLC processor judges the program page state of the ring rolling machine for multiple times to judge the current operation state of the ring rolling machine.

[0014] By adopting the above technical scheme, the system of the PLC processor is strengthened, the anti-interference ability of the PLC processor is improved, the error caused by the control time lag is avoided, and the electromagnetic interference and the interference of irrelevant signals are avoided through the low-pass filter and the digital filter.

[0015] The inner part of the middle sleeve is slidably connected to the outer surface of the corresponding sliding block, and the sliding blocks are arranged in a circular array between the upper cover and the base.

[0016] By adopting the above technical scheme, the upper cover, the base, the middle sleeve, the ring, and the sliding blocks are combined and connected to the workbench of the vulcanizing machine, heat is transferred to the pattern block through the cooperation of the sliding blocks and the middle sleeve, and the vulcanized tire processing can be performed.

[0017] Preferably, the bottom of the upper cover is fixedly connected with an upper side plate, and the bottom of the upper cover is detachably connected with an upper cover wear-resistant plate through a part of the bolts, and the upper cover wear-resistant plate is located between the corresponding sliding block and the upper cover; the top of the base is fixedly connected with a lower side plate, and the top of the base is detachably connected with a base sliding plate through a part of the bolts, and the base sliding plate is located between the corresponding sliding block and the base.

[0018] By adopting the above technical scheme, the upper cover 1 and the upper side plate 11, and the base 2 and the lower side plate 21 are designed in an integrated manner, which facilitates the installation, disassembly, maintenance and repair of the mold.

[0019] Preferably, the side of each sliding block abutting against the pattern block is provided with two α angles and two β angles, the angles of the two α angles and the two β angles are both greater than 90°, and the angle of the sliding block is 25°; the top of the base sliding plate is provided with a plurality of rectangular sliding grooves, the bottom of each sliding block is provided with a convex groove matched with the rectangular sliding groove, and each convex groove is clamped in the corresponding rectangular sliding groove.

[0020] By adopting the above technical scheme, two conical surfaces with an acute angle to the vertical direction are machined at the upper and lower ends of the back surface of the pattern block, and the conical surfaces with the same angle are also machined at the cooperation position of the sliding block and the pattern block, which is beneficial to avoid the structure that is difficult to process or difficult to process, reduce the mold cost, reduce the stress value of the mold structure, relieve the stress concentration, relieve the deformation of the mold to a certain extent, improve the service life of the mold, increase the qualified rate of the vulcanized tire, optimize the mold structure, and increase the interchangeability of the sliding block and the pattern block; the rectangular sliding groove is beneficial to reduce the production cost of the mold.

[0021] Preferably, the inner part of the middle sleeve is fixedly connected with a plurality of middle sleeve sliding plates, each middle sleeve sliding plate comprises two mold sleeves and a guide block, one side of each mold sleeve is fixedly connected to the outer surface of the guide block, one side of each sliding block is provided with a guide sliding groove, and one side of each guide block is slidably connected to the inner part of the corresponding guide sliding groove.

[0022] By adopting the technical scheme, two bushings are installed close to the guide block, which is beneficial to the temperature transfer of the pattern block to both sides, and avoids the uneven distribution of the slider temperature to cause thermal stress in the internal part, and improves the service life of the slider.

[0023] In summary, the present application has the following beneficial technical effects:

[0024] 1. The present application is provided with an image acquisition module, which collects data to summarize the relationship between spark characteristics and discharge state, and detects discharge gap voltage, spark discharge frequency, feed speed, main signal and noise signal of the electric spark sound source during processing, etc. in real time through acoustic emission sensing. The host computer control program module can accurately predict and track the processing state according to the information of the spark image, and control the discharge frequency and power in real time, so as to control the processing parameters and improve the precision of the bow seat processing.

[0025] 2. The present application is provided with two conical surfaces with an acute angle with the vertical direction on the upper and lower ends of the pattern block 5, which is beneficial to improve the uniformity of the mold temperature distribution, improve the heat transfer efficiency of the slider and the pattern block, increase the contact area of the pattern block and the bow seat by changing the contact mode of the pattern block and the bow seat, improve the average temperature of the pattern block, reduce the temperature difference between the upper and lower ends of the pattern block, and reduce the maximum temperature difference of the pattern block.

[0026] 3. The present application is provided with an upper cover 1 and an upper side plate 11, a base 2 and a lower side plate 21, which are designed in an integrated manner, facilitating the installation, disassembly, maintenance and repair of the mold. The present application is provided with a rectangular sliding groove, and the base sliding plate is changed from a trapezoidal groove to a rectangular sliding groove, which increases the contact area between the slider and the upper wear plate and the base sliding plate, the temperature difference on the pattern block is relatively small, which is beneficial to increase the heat transfer area of the heat conductor, improve the heat transfer efficiency of the slider and the pattern block, and increase the quality of the vulcanized tire. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure schematic diagram of a host computer control program module in a bow seat processing method of the present application.

[0028] Figure 2 is a three-dimensional structure explosion schematic diagram of the present application;

[0029] Figure 3 is a structure schematic diagram of the present application and a side view;

[0030] Figure 4 is Figure 3 the sectional view of line A-A in FIG.

[0031] Figure 5 is Figure 4 the local structure enlarged schematic diagram of B in FIG.

[0032] Figure 6 is a structural schematic diagram of a slider in an arcuate seat of the present application;

[0033] Figure 7 is a structural schematic diagram of a base sliding plate in an arcuate seat of the present application.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, upper cover; 11, upper side plate; 12, upper cover wear plate; 13, base sliding plate; 14, rectangular sliding groove;

[0036] 2, base; 21, lower side plate; 3, middle sleeve insert ring; 4, slider; 5, pattern block; 6, middle sleeve;

[0037] 7, middle sleeve sliding plate; 71, die sleeve; 72, guide block. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying drawings Figures 1-7 The present application will be further described in detail.

[0039] The embodiment of the present application discloses a processing method of an arcuate seat, referring to Figure 1 、 4 , the arcuate seat comprises an upper cover 1, a base 2, a middle sleeve insert ring 3, a plurality of sliders 4 and a plurality of bolts, in the manufacture of a tire, the arcuate seat is one of the components of a segmented mold with a guiding and positioning device, the arcuate seat is used for carrying a pattern block 5 and transmitting power from a middle mold sleeve during the opening and closing of the mold, the slider 4 is the arcuate seat, the upper cover 1 fixes a tire side plate on the mold and is connected to a power cylinder of a curing machine, transmits power from the power cylinder and assists the mold parts in opening and closing the mold, the base 2 fixes a lower side plate 21 of the mold, so that the mold is accurately positioned and fixed on the workbench of the curing machine, one side of the upper cover 1 is detachably connected to the inside of the middle sleeve insert ring 3 through a part of the bolts, the middle sleeve insert ring 3 is installed on the upper end face of the middle sleeve 6 and is an annular mold part connected to the hot plate of the curing machine, plays a role in connecting the curing machine and adjusting the preloading height, the bottom of the middle sleeve insert ring 3 is detachably provided with the middle sleeve 6 through a part of the bolts, the middle sleeve 6 transmits power from the curing machine and realizes the opening and closing of the mold part, the inside of each slider 4 is overlapped with the pattern block 5, comprising an electric spark cutting machine tool and a ring rolling machine, the electric spark cutting machine tool comprises an electrical module and a mechanical module, the electrical module comprises an image acquisition module, a data collection module, a discharge state prediction module and an upper computer control program module;

[0040] The mechanical module comprises a machine tool (known technology), a high-speed CCD camera (known technology), two noise sensors, a current sensor and a voltage sensor, and the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the electrical module; the discharge gap state determines the motor feeding and the pulse power discharge adjustment; the accuracy of the discharge state detection needs to be improved; the discharge state is predicted in combination with the spark image; the upper computer control program module controls the discharge through signal feedback, realizes the wire-cut electrical discharge machining control, and thus improves the machining efficiency and quality.

[0041] The image acquisition module is in communication connection with the high-speed CCD camera, the high-speed CCD camera can adopt Memrecam ACS-1M60, the time accuracy can reach nanosecond level, has higher frame synchronization, frame rate and exposure accuracy, when the high-speed CCD camera collects the image of the spark, the number and area of the spark can be recognized, through the two noise sensors, the current sensor and the voltage sensor, two-way acoustic emission and voltage and current signals in the wire-cut electrical discharge machining process are synchronously collected, the data collection module comprises an NI data acquisition card, the discharge state prediction module, the image acquisition module and the upper computer control program module are in communication connection with the NI data acquisition card, the NI data acquisition card can adopt the existing NI USB-6366 which can realize 8-way synchronous analog input, 2MS / s sampling frequency, 16-bit resolution and the like, the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the upper computer control program module;

[0042] The discharge state prediction module comprises prediction discharge state data; the upper computer control program module comprises machine tool control, data acquisition and saving and data analysis, realizes the synchronous collection of the electrical signal and the spark light signal image during machining, the high-speed camera and the data acquisition card share the same clock source, so that they are always in the same clock cycle.

[0043] One of the noise sensors collects the acoustic emission signal generated by the spark explosion, and the other noise sensor collects the noise emission signal of the wire-cut electrical discharge machine tool body, the two-way acoustic emission comprises the acoustic emission signal generated by the spark explosion and the noise emission signal of the wire-cut electrical discharge machine tool body.

[0044] The high-speed CCD camera collects the spark image of the electric spark, extracts the spark image information in the spark image, inputs the spark image information into the host computer control program module, and outputs the predicted discharge state data corresponding to the spark image in the host computer control program module. The host computer control program module judges the predicted discharge state to adjust the thickness of the electric spark wire. The spark image and pulse waveform signal in the processing process are collected through synchronization technology, and then the sample data set is obtained by filtering the data. By manually extracting features from the spark image, the area, energy, energy ratio, energy distribution, spark speed, invariant moment, histogram and other feature data of the spark image are obtained, and theoretical analysis is performed thereon. Combined with the dynamic time warping theory tool, the feature data of the spark image and the data of the pulse waveform are matched, so that the host computer control program module displays the corresponding discharge state prediction data after obtaining the feature data reflected by the spark image, thereby avoiding the wire breaking phenomenon in the processing process.

[0045] The ring rolling machine comprises a numerical control module and a body. The numerical control module comprises a PLC processor. The PLC processor is a processor having the functions of processing, control, judgment, data transmission, and receiving interface program written in Python, C++, and the like. The body is internally fixedly connected with a low-pass filter (known technology), a digital filter (known technology), a vibration sensor (known technology), and a laser displacement sensor (known technology). The low-pass filter, the digital filter, the vibration sensor, and the laser displacement sensor are in communication connection with the PLC processor. The low-pass filter can avoid electrical interference in the power grid of the ring rolling machine. The digital filter can eliminate interference of irrelevant signals in the ring rolling machine, thereby enhancing the anti-interference performance of the numerical control module of the ring rolling machine. The vibration sensor and the laser displacement sensor can enhance the effective monitoring of the working condition of the ring rolling machine, thereby avoiding major faults in the use of the ring rolling machine.

[0046] The PLC processor judges the program page state of the ring rolling machine multiple times to determine the current operating state of the ring rolling machine. The PLC processor is connected with various sensor elements inside the ring rolling machine. Meanwhile, the PLC processor judges the important information in the system operation of the ring rolling machine multiple times to avoid misjudgment. In the program operation of the numerical control ring rolling machine, the switching of each page state is judged at least twice to prevent repeated opening and affect the performance of the ring rolling machine.

[0047] The ring rolling machine processes the blank material into an arcuate seat ring. The electric spark cutting machine cuts the arcuate seat ring for subsequent processing, and processes the arcuate seat ring into a plurality of arcuate seats, i.e., a plurality of sliders 4.

[0048] With reference to Figures 2-7 The inner part of the middle sleeve is slidingly connected to the outer surface of the corresponding slider 4. The plurality of sliders 4 and the middle sleeve 6 are located between the upper cover 1 and the base 2. The plurality of sliders 4 are arranged in a circumferential array between the upper cover 1 and the base 2.

[0049] The bottom of the upper cover 1 is fixedly connected with the upper side plate 11, the upper cover 1 and the upper side plate 11 are designed in an integrated manner, the base 2 and the lower side plate 21 are designed in an integrated manner, the installation and dismounting and maintenance between molds are facilitated, and the production and manufacturing of the tire mold are facilitated, the bottom of the upper cover 1 is detachably connected with the upper cover wear plate 12 through a part of bolts, the upper cover wear plate 12 is used for connecting the upper cover 1 and the sliding block 4 to move radially during opening and closing of the mold, and the upper cover wear plate 12 is located between the corresponding sliding block 4 and the upper cover 1; the top of the base 2 is fixedly connected with the lower side plate 21, and the top of the base 2 is detachably connected with the base sliding plate 13 through a part of bolts, the base sliding plate 13 is a base wear plate, direct contact between the sliding block 4 and the base 2 is avoided, and the base sliding plate 13 is located between the corresponding sliding block 4 and the base 2.

[0050] Each sliding block 4 is provided with two α angles and two β angles on the side close to the pattern block 5, the angles of the two α angles and the two β angles are greater than 90°, a positioning step is machined on part of the pattern block 5, the matching position of the pattern block 5 and the sliding block 4 is limited, the material thickness of the pattern block 5 at the matching position with the sliding block 4 is small due to the machining of the step, and stress concentration occurs at the position, the positioning step of the sliding block 4 in the present bow-shaped seat is removed to relieve the stress concentration, the contact area of the pattern block 5 and the sliding block 4 is increased, two conical surfaces at an acute angle with the vertical direction are machined on the upper and lower ends of the back of the pattern block 5, and conical surfaces with the same angle are machined at the matching position of the sliding block 4 and the pattern block 5, the conical surfaces have two functions: one is to position the pattern block 5 and replace the positioning step; the other is to increase the contact area between the pattern block 5 and the sliding block 4, thereby increasing the heat transfer area and improving the heat transfer efficiency, and the heat transfer path of the mold is improved, and the uniformity of the temperature distribution of the pattern block 5 is improved.

[0051] The angle of the sliding block 4 is 25°, the angle of the common sliding block 4 is changed from 33° to 25°, the temperature difference in the pattern block 5 is relatively reduced, the tire vulcanization quality is improved, the number is ten, and the ten sliding blocks 4 are arranged in a circumferential array below the upper side plate 11, the weight of the whole loose mold is reduced, the material is obviously reduced, and the machining time is saved.

[0052] The top of the base sliding plate 13 is provided with a plurality of rectangular sliding grooves 14, the existing rectangular sliding groove 14 adopts a trapezoidal groove, the temperature difference of the pattern block 5 is relatively small after the base sliding plate 13 is changed from the trapezoidal groove to the rectangular sliding groove 14, the tire vulcanization quality is improved, and the production cost of the mold is reduced, the bottom of each sliding block 4 is provided with a convex groove matched with the rectangular sliding groove 14, and each convex groove is clamped in the inside of the corresponding rectangular sliding groove 14.

[0053] The inner part of the middle sleeve 6 is fixedly connected with a plurality of middle sleeve sliding plates 7. The heat source on the pattern block 5 mainly comes from the middle sleeve 6, and the heat source in the middle sleeve steam chamber is mainly transmitted to the sliding block 4 through the middle sleeve sliding plate 7 and then to the pattern block 5, so that the installation position of the middle sleeve 6 on the sliding block 4 greatly affects the distribution of the temperature field of the final pattern block 5, and the corresponding two die sleeves 71 are installed close to the guide block 72, which is beneficial to the lateral middle temperature of the pattern block 5 to be transmitted to both sides, and at the same time, the uneven distribution of the temperature of the sliding block 4 can avoid the generation of thermal stress in the internal part of the component, thereby affecting the service life of the sliding block 4. Each middle sleeve sliding plate 7 comprises two die sleeves 71 and a guide block 72. One side of each of the two die sleeves 71 is fixedly connected to the outer surface of the guide block 72. One side of each of the sliding blocks 4 is provided with a guide sliding groove. One side of each of the guide blocks 72 is slidably connected to the inside of the corresponding guide sliding groove. The middle sleeve sliding plate 7 is installed between the sliding block 4 and the middle sleeve 6, and plays a role of connecting the sliding block 4 and the die sleeve 71 and guiding the middle sleeve 6.

[0054] The implementation principle of the embodiment of the present application is as follows:

[0055] 1. In the tire production process, each time a tire is vulcanized, the positive mold is cycled once. The middle sleeve sliding plate 7 moves up and down to realize the radial movement of the sliding block 4 driving the pattern block 5, thereby realizing the opening and closing process of the positive mold.

[0056] 2. In the descending process, the components such as the upper cover 1, the sliding block 4 and the pattern block 5 are stretched downward relative to the middle sleeve insert ring 3 and the middle sleeve 6 under the pushing of the mold expansion cylinder, and at the same time, the sliding block 4 and the pattern block 5 are radially expanded outward under the action of the middle sleeve sliding plate. When the sliding block 4 slides to the limiting position on the middle sleeve 6, the stretching action is stopped, and the expansion of the pattern block 5 is completed. Thereafter, the positive mold continues to descend to the tire embryo shaping position.

[0057] 3. After the tire embryo completes the shaping action, the positive mold continues to descend, and when the sliding block 4 reaches the base sliding plate 13 on the lower side plate 21, the upper cover 1, the upper side plate 11, the sliding block 4 and the pattern block 5 stop the descending action. At this time, under the action of the positive mold lifting device, the middle sleeve insert ring 3 and the middle sleeve 6 continue to descend, forcing the sliding block 4 and the pattern block 5 to contract, so that the pattern block 5 is completely matched with the upper side plate 11 and the lower side plate 21. At this time, the mold closing action is completed, and the tire enters the vulcanization state.

[0058] 4. When the tire vulcanization is completed and the mold opening condition is met, the middle sleeve insert ring 3 and the middle sleeve 6 are lifted under the action of the positive mold lifting device. At this time, the upper cover 1, the upper side plate 11, the sliding block 4 and the pattern block 5 remain in the original position, and the sliding block 4 and the pattern block 5 are forced to radially expand outward. When the middle sleeve insert ring 3 and the middle sleeve 6 are lifted to the limiting position of the sliding block 4, the mold opening action is completed, and then the upper cover 1, the upper side plate 11, the sliding block 4 and the pattern block 5 continue to be lifted with the lifting device of the middle sleeve insert ring 3 and the middle sleeve 6.

[0059] 5. When the mold is raised to a certain height, in order to keep the original temperature of the slider 4 and the pattern block 5, the slider 4 and the pattern block 5 need to be retracted to the mold closing position. At this time, the telescopic power cylinder pulls the upper cover 1, the upper side plate 11, the slider 4 and the pattern block 5 and other components relative to the middle sleeve insert ring 3 and the middle sleeve 6 to retract. When the pattern block 5 is completely closed with the upper side plate 11, the retraction action is completed. After that, the lifting device continues to lift the mold to the safe stop position and waits for the next tire vulcanization action.

[0060] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for processing an arc-shaped seat, the arc-shaped seat comprising an upper cover (1), a base (2), a middle sleeve ring (3), a plurality of sliders (4), and a plurality of bolts, wherein one side of the upper cover (1) is detachably connected to the interior of the middle sleeve ring (3) via a portion of the bolts, and the bottom of the middle sleeve ring (3) is detachably fitted with a middle sleeve (6) via a portion of the bolts, and each slider (4) has a patterned block (5) overlapping inside, characterized in that: The application relates to an electric spark cutting machine and a ring rolling machine, wherein the electric spark cutting machine comprises an electrical module and a mechanical module, the electrical module comprises an image acquisition module, a data collection module, a discharge state prediction module and an upper computer control program module, the mechanical module comprises a machine tool, a high-speed CCD camera, two noise sensors, a current sensor and a voltage sensor, the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the electrical module, the image acquisition module is in communication connection with the high-speed CCD camera, the data collection module comprises an NI data acquisition card, the discharge state prediction module, the image acquisition module and the upper computer control program module are in communication connection with the NI data acquisition card, the machine tool, the high-speed CCD camera, the two noise sensors, the current sensor and the voltage sensor are in communication connection with the upper computer control program module, the discharge state prediction module comprises prediction discharge state data, the upper computer control program module comprises machine tool control, data acquisition and saving and data analysis, synchronous acquisition of electric signals and electric spark light signal images is realized during machining, the high-speed camera and the data acquisition card share the same clock source to ensure that the two are always in the same clock cycle, the high-speed CCD camera acquires spark images of electric sparks, extracts spark image information in the electric spark images, the spark image information is input into the upper computer control program module, the upper computer control program module outputs prediction discharge state data corresponding to the spark images, the upper computer control program module judges the prediction discharge state to adjust the thickness of the electric spark wire, and the characteristic data of the spark images and the data of the pulse waveforms are matched, so that the upper computer control program module displays corresponding discharge state prediction data after obtaining characteristic data reflected by the spark images, and the wire breaking phenomenon in the machining process is avoided. One of the noise sensors collects acoustic emission signals generated by spark explosion, and the other noise sensor collects noise emission signals of the electric spark wire cutting machine body, and the two acoustic emission signals include the acoustic emission signals generated by spark explosion and the noise emission signals of the electric spark wire cutting machine body. The ring rolling machine comprises a numerical control module and a body, the numerical control module comprises a PLC processor, the inside of the body is fixedly connected with a low-pass filter, a digital filter, a vibration sensor and a laser displacement sensor, and the low-pass filter, the digital filter, the vibration sensor and the laser displacement sensor are in communication connection with the PLC processor. The PLC processor judges the program page state of the ring rolling machine multiple times to judge the current operation state of the ring rolling machine. The inside of the middle sleeve (6) is in sliding connection with the outer surface of the corresponding sliding block (4), the sliding block (4) and the middle sleeve (6) are located between the upper cover (1) and the base (2), and the plurality of sliding blocks (4) are arranged in a circumferential array between the upper cover (1) and the base (2). ​ 2. A method of machining a segment according to claim 1, characterised in that: ​ 3. The method of claim 1, wherein: ​ 4. The method of claim 3, wherein: ​ 5. The method of claim 1, wherein: ​ 6. A method of machining a segment according to claim 5, wherein: The bottom of the upper cover (1) is fixedly connected with an upper side plate (11), and the bottom of the upper cover (1) is detachably connected with an upper cover wear plate (12) through a part of bolts, and the upper cover wear plate (12) is located between the corresponding sliding block (4) and the upper cover (1); the top of the base (2) is fixedly connected with a lower side plate (21), and the top of the base (2) is detachably connected with a base sliding plate (13) through a part of bolts, and the base sliding plate (13) is located between the corresponding sliding block (4) and the base (2).

7. A method of machining a segment according to claim 6, characterised in that: Each of the sliding blocks (4) is provided with two α and two β angles on the side close to the pattern block (5), the angles of the two α and two β are both greater than 90°, and the angle of the sliding block is 25°; the top of the base sliding plate (13) is provided with a plurality of rectangular sliding grooves (14), the bottom of each of the sliding blocks (4) is provided with a convex groove matched with the rectangular sliding groove (14), and each of the convex grooves is clamped in the corresponding rectangular sliding groove (14).

8. A method of machining a segment according to claim 7, characterised in that: The inside of the middle sleeve (6) is fixedly connected with a plurality of middle sleeve sliding plates (7), each of the middle sleeve sliding plates (7) comprises two mold sleeves (71) and a guide block (72), one side of each of the two mold sleeves (71) is fixedly connected to the outer surface of the guide block (72), one side of each of the sliding blocks (4) is provided with a guide sliding groove, and one side of each of the guide blocks (72) is slidably connected to the inside of the corresponding guide sliding groove.

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