CN112276267A - Titanium alloy weak-rigidity part precision linear cutting clamping device and working method thereof - Google Patents
Titanium alloy weak-rigidity part precision linear cutting clamping device and working method thereof Download PDFInfo
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- CN112276267A CN112276267A CN202011107629.8A CN202011107629A CN112276267A CN 112276267 A CN112276267 A CN 112276267A CN 202011107629 A CN202011107629 A CN 202011107629A CN 112276267 A CN112276267 A CN 112276267A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
A precise linear cutting and clamping device for a titanium alloy weak-rigidity part and a working method thereof belong to the technical field of precise electromachining. The clamping device comprises an upper cover, an E-shaped lower cover, a positioning pin and a fixing screw. The invention provides a processing method of a modern process, which can effectively meet the requirements of dimensional accuracy, surface roughness and parallelism of a weak-rigidity titanium alloy thin-wall part, and designs a precision clamping device which can be applied to slow-speed wire cutting processing and can ensure the requirements of processing accuracy and dimension. The main content of the invention is that the thin-wall part with wire cutting allowance after the milling process is arranged in a designed clamping device to carry out the slow wire cutting process, and the technological process of thinning the wing plate of the thin-wall part to 0.2mm is completed. The precision and the surface roughness of the thin-wall part are improved by machining the titanium alloy weak-rigidity part precision linear cutting clamping device; the method is suitable for processing the special-shaped curved surface thin-wall part which cannot be finished by the traditional process.
Description
Technical Field
The invention belongs to the technical field of precision electromachining, and particularly relates to a precision linear cutting clamping device for a titanium alloy weak-rigidity piece and a working method thereof.
Background
The titanium alloy thin-wall part with the complex structure and the weak rigidity is widely applied to the field of precision instruments such as aerospace, medical instruments and the like, and the problems of deformation, instability, vibration and the like are easily caused in mechanical micro-cutting machining due to poor machinability of the titanium alloy and low rigidity of the thin-wall part with the weak rigidity, so that the machining precision is reduced. The titanium alloy thin-wall part with weak rigidity is favored by the aerospace field due to the characteristics of high strength, good corrosion resistance, high heat resistance and the like of the material.
In the machining process, due to the direct contact between the cutter and the part, cutting force is inevitably generated, so that the internal stress of the material is released to generate deformation, and the high-precision machining requirement cannot be met. For a titanium alloy thin wall with the thickness of 0.2mm, the traditional precision cutting processing is difficult to realize deformation-free processing. In particular, the high machining conditions of parallelism less than 5 μm and surface roughness less than Ra 0.4 μm make it difficult for conventional precision cutting machining to meet machining requirements.
At present, for titanium alloy thin-wall parts with high precision requirements, a small amount of finishing allowance is usually left by adopting a traditional machining process, and then the required precision requirements are met by a manual grinding method. However, if a titanium alloy thin-wall part with a curved surface, an irregular shape and high precision is encountered, the quality standard of surface consistency is difficult to achieve by adopting a manual grinding method, the operation difficulty is greatly increased, and the working efficiency is influenced.
Slow wire-moving wire cut electrical discharge machining is an important means of precision electric machining, and a non-contact cutting mode of the slow wire-moving wire cut electrical discharge machining is one of important solutions for cutting a conductive material with weak rigidity and thin wall and difficult to machine. The slow wire cut electrical discharge wire cutting has higher positioning precision and repeated positioning precision, and the surface finish after processing is very high. Therefore, more processes are applied to the processing of thin-wall parts with weak rigidity.
Aiming at the technical problem of machining of titanium alloy thin-wall parts, a precise linear cutting and clamping device for titanium alloy weak-rigidity parts is urgently needed to solve the technical problems of processing deformation, difficulty in guaranteeing precision, high manufacturing cost and the like of the titanium alloy weak-rigidity parts.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the precise linear cutting and clamping device for the titanium alloy weak-rigidity part and the working method thereof are used for solving the technical problems that the titanium alloy weak-rigidity part is deformed in machining, the precision is difficult to guarantee, the manufacturing cost is high and the like.
The precise linear cutting and clamping device for the titanium alloy weak-stiffness part comprises an upper cover, an E-shaped lower cover, a positioning pin and a fixing screw, wherein the bottom surface of the E-shaped lower cover is of a plate-shaped structure, a positioning reference table is arranged on the upper part of the edge of the bottom surface of the E-shaped lower cover, the side surface of the E-shaped lower cover is in a III shape, the E-shaped lower cover is attached to the upper cover through the upper surface of the positioning reference table and is fixed through the positioning pin and the screw to form a cavity for clamping the thin-walled part, a positioning pin hole and a fixing screw hole for fixing the lower plane of the thin-walled part are formed in the inner bottom surface of the E-shaped lower cover, and the E-shaped lower; the middle part of the upper cover is provided with a positioning pin hole and a fixing screw hole for fixing the upper plane of the thin-wall part, and the lower part of the upper cover is fixedly connected with the upper plane of the thin-wall part through a positioning pin and a fixing screw.
The upper cover is also provided with a positioning reference plane corresponding to the positioning reference platform, and the positioning pin hole and the fixing screw hole of the upper cover are both arranged on the positioning reference plane.
The bottom surface of the E-shaped lower cover is also provided with a part positioning surface which is corresponding to the lower plane of the thin-wall part and is sunken downwards.
The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part comprises the following steps which are sequentially carried out,
step one, selecting a slow-moving wire cutting machine tool, and matching brass electrode wires with the diameter of 0.2 mm;
starting the machine to enable the slow-walking wire cutting machine to return to the original point of the machine, correcting the verticality of the electrode wire of the machine, and recording a corresponding cutting program of the thin-walled workpiece;
selecting a set of special fixture for cutting the slow-walking wire;
fixing a special fixture for slow-speed wire cutting at one corner of a workbench of a slow-speed wire cutting machine tool, locking the E-shaped lower cover by the special fixture for slow-speed wire cutting, and selecting the middle position of the E-shaped lower cover at a clamping point;
fifthly, the thin-wall part, the upper cover and the E-shaped lower cover are positioned and fastened together through pins and screws, the assembly of the titanium alloy weak-rigidity part precision linear cutting and clamping device is completed, four wing plates in the thin-wall part face four directions respectively, and one wing plate in one direction is taken for processing;
aligning and aligning the thin-wall part by using a dial indicator, wherein the precision of a datum plane is 5 microns, searching edges and touching numbers, positioning the datum point of the precision linear cutting and clamping device for the titanium alloy weak-rigidity part, calling a corresponding cutting program, and cutting;
seventhly, the electrode wire penetrates through the notch of the electrode wire cutting area to perform rough cutting 2 times and fine cutting 3 times on the thin-wall part of the wing plate in the thin-wall part,
the margin left on the first side of the rough cutting is 0.08mm, the correction parameter uses the value of 0.271, the electrical parameter of the first rough cutting is set to carry out the first rough cutting,
resetting the cutting program after the rough cutting is finished for the first time, setting the correction parameter to be 0.191mm, setting the electrical parameter of the rough cutting for the second time, calling the cutting program again to start processing, performing the rough cutting for the second time,
after the secondary rough cutting is finished, the dial indicator is used for re-correcting, so that the position precision of the titanium alloy weak-stiffness part precision linear cutting clamping device is within a set value range, and then a cutting program is called to execute a precision cutting path;
step eight, performing fine cutting on the thin-wall structure of the wing plate for 3 times, wherein the correction parameters of the fine cutting for 3 times are respectively the numerical values of 0.121mm, 0.104mm and 0.103mm, and setting the electrical parameters of the fine cutting for each time respectively, resetting the cutting program and calling the cutting program after the fine cutting of the previous two times is completed, and performing the next fine cutting again, so that the cutting of the thin-wall structure of the wing plate in one direction is completed;
and step nine, taking down and converting the direction of the precise linear cutting clamping device for the titanium alloy weak-stiffness part, sequentially selecting a wing plate in the other direction adjacent to the cut wing plate, and repeating the step four to the step eight until the thin-wall structures of the wing plates in the four directions are completely cut.
The first rough cutting electrical parameters are set as follows: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 3.0mm/min, the current is 3.0A-3.5A, the voltage is 40V-45V, the jet pressure is 6L/min, and the wire electrode tension is 12N.
The second rough cutting electrical parameter is set as: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 12.0mm/min, the cutting current is 2.0A-2.2A, the cutting voltage is 50V-58V, the upper and lower jet flow pressure is 3L/min, and the wire electrode tension is 12N.
The first fine cutting electrical parameters are as follows: the discharge pulse time is 1 mu s, the discharge stop time is 22 mu s, the cutting speed is 14.0mm/min, the cutting current is 0.5A-0.6A, the cutting voltage is 60 v-65 v, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
The second fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 8.0mm/min, the cutting current is 8A-8.3A, the cutting voltage is 45V-55V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
The third fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 9.0mm/min, the cutting current is 5.9-6.0A, the cutting voltage is 30-32V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
Through the design scheme, the invention can bring the following beneficial effects:
the invention provides a processing method of a modern process, which can effectively meet the requirements of dimensional accuracy, surface roughness and parallelism of a weak-rigidity titanium alloy thin-wall part, and designs a precision clamping device which can be applied to slow-speed wire cutting processing and can ensure the requirements of processing accuracy and dimension. The main content of the invention is that the thin-wall part with wire cutting allowance after the milling process is arranged in a designed clamping device to carry out the slow wire cutting process, and the technological process of thinning the wing plate of the thin-wall part to 0.2mm is completed.
The precision and the surface roughness of the thin-wall part are improved by machining the titanium alloy weak-rigidity part precision linear cutting clamping device; the method is suitable for processing the special-shaped curved surface thin-wall part which cannot be finished by the traditional process.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is an exploded view of the structure of a precision linear cutting and clamping device for a titanium alloy weak-stiffness part and a working method thereof.
FIG. 2 is a perspective view of a precise linear cutting and clamping device for a titanium alloy weak-stiffness part and a device in the working method thereof.
FIG. 3 is a schematic structural diagram of a titanium alloy weak-stiffness part precision linear cutting clamping device and a thin-wall part in a working method thereof.
FIG. 4 is an effect diagram of the titanium alloy weak-stiffness part after the thin-wall part is cut in the precision linear cutting clamping device and the working method thereof.
Fig. 5 is a structural schematic diagram of an upper cover in the precision linear cutting clamping device for the titanium alloy weak-stiffness part and the working method thereof.
FIG. 6 is a schematic view of the lower structure of the upper cover in the precision linear cutting and clamping device for the titanium alloy weak-stiffness part and the working method thereof.
Fig. 7 is a structural schematic diagram of an E-shaped lower cover in the titanium alloy weak-stiffness part precision linear cutting clamping device and the working method thereof of the invention.
FIG. 8 is a schematic view of the lower structure of an E-shaped lower cover in the precision linear cutting and clamping device for the titanium alloy weak-stiffness part and the working method thereof.
In the figure, 1-an upper cover, 2-E type lower cover, 3-a positioning pin, 4-a fixing screw, 5-a positioning pin hole, 6-a fixing screw hole, 7-a thin-wall part, 8-a wing plate, 9-a wire electrode cutting area notch, 201-a positioning reference platform, 202-a part positioning surface, 701-an upper plane, 702-a lower plane and 703-a positioning reference plane.
Detailed Description
The precise linear cutting and clamping device for the titanium alloy weak-stiffness part comprises an upper cover 1, an E-shaped lower cover 2, a positioning pin 3 and a fixing screw 4, and is used for cutting the thickness of a wing plate 8 of a thin-wall part 7 into the thickness of 0.2mm on a slow-speed wire cutting machine after clamping and fixing the thin-wall part 7. The thin-wall part 7 is a weak rigidity part made of titanium alloy material; it has an upper plane 701 and a lower plane 703 and a wing 8 connecting the four directions between the upper and lower planes.
The bottom surface of the E-shaped lower cover 2 is of a plate-shaped structure, the upper part of the edge of the bottom surface of the E-shaped lower cover 2 is provided with a positioning reference table 201, the side surface of the E-shaped lower cover 2 is III-shaped, the space between two adjacent positioning reference tables 201 is an opening 9 of a wire electrode cutting area, the E-shaped lower cover 2 is attached to the upper cover 1 through the upper surface of the positioning reference table 201 and forms a cavity for clamping the thin-walled workpiece 7 through a positioning pin 3 and a screw for positioning and fixing the thin-walled workpiece 7, the inner bottom surface of the E-shaped lower cover 2 is provided with a positioning pin hole 5 and a fixing screw hole 6 for fixing the lower plane 702 of the thin-walled workpiece 7, the E-shaped lower cover 2 is fixedly connected with the lower plane 702 of the thin-walled workpiece 7 through the positioning pin 3 and the fixing screw 4, the bottom surface of the E-shaped lower cover 2 is further provided with a downwardly-recessed part positioning surface 202 corresponding to the, the fixing modes of the lower planes 702 in the four directions are the same, and the lower planes 702 are fixed after being embedded into the part positioning surface 202 through the positioning pins 3 and the fixing screws 4 penetrating through the corresponding positioning pin holes 5 and the corresponding fixing screw holes 6.
The middle part of the upper cover 1 is provided with a positioning pin hole 5 and a fixing screw hole 6 for fixing the upper plane 701 of the thin-wall part 7, the lower part of the upper cover 1 is fixedly connected with the upper plane 701 of the thin-wall part 7 through a positioning pin 3 and a fixing screw 4, the upper cover 1 is further provided with a positioning reference plane 703 corresponding to the positioning reference platform 201, and the positioning pin hole 5 and the fixing screw hole 6 of the upper cover 1 are both arranged on the positioning reference plane 703.
The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part comprises the following steps which are sequentially carried out,
step one, selecting a slow-moving wire cutting machine tool, and matching brass electrode wires with the diameter of 0.2 mm;
secondly, starting the machine to enable the slow-walking wire cutting machine to return to the original point of the machine, correcting the verticality of the electrode wire of the machine, and recording a corresponding cutting program of the thin-walled workpiece 7;
step three, selecting a set of special fixture for cutting the slow-walking wire, wherein the fixture is a universal fixture for personnel in the field;
fixing the special fixture for slow-speed wire cutting at one corner of a workbench of a slow-speed wire cutting machine tool, locking the E-shaped lower cover 2 by the special fixture for slow-speed wire cutting, and selecting a position with higher rigidity in the middle of the E-shaped lower cover 2 at a clamping point to ensure that the E-shaped lower cover 2 has smaller deformation;
fifthly, the thin-wall part 7, the upper cover 1 and the E-shaped lower cover 2 are positioned and fastened together through the positioning pin 3 and the fixing screw 4, the assembly of the titanium alloy weak-rigidity part precision linear cutting and clamping device is completed, four wing plates 8 in the thin-wall part 7 face four directions respectively, and one wing plate 8 in one direction is taken for processing;
sixthly, utilizing a dial indicator to align the thin-wall part 7, wherein the precision of a datum plane is 5 microns, finding edges and touching numbers, positioning the datum point of the precision linear cutting and clamping device for the titanium alloy weak-rigidity part, and after the datum point is found, compiling a cutting program to prepare for calling a corresponding cutting program and cutting;
seventhly, the electrode wire penetrates through the notch 9 of the electrode wire cutting area to perform rough cutting 2 times and fine cutting 3 times on the thin-wall part of the wing plate 8 in the thin-wall part 7,
the margin left on the first side of the rough cutting is 0.08mm, the correction parameter uses the value of 0.271, the electrical parameter of the first rough cutting is set to carry out the first rough cutting,
resetting the cutting program after the rough cutting is finished for the first time, setting the correction parameter to be 0.191mm, setting the electrical parameter of the rough cutting for the second time, calling the cutting program again to start processing, performing the rough cutting for the second time,
after the secondary rough cutting is finished, the dial indicator is used for re-correcting, so that the position precision of the titanium alloy weak-stiffness part precision linear cutting clamping device is within a set value range, and then a cutting program is called to execute a precision cutting path;
step eight, performing fine cutting on the thin-wall structure of the wing plate 8 for 3 times, wherein the correction parameters of the fine cutting for 3 times are respectively the numerical values of 0.121mm, 0.104mm and 0.103mm, setting the electrical parameters of the fine cutting for each time, resetting the cutting program and calling the cutting program after the fine cutting of the previous two times is completed, and performing the next fine cutting again, so that the thin-wall structure of the wing plate 8 in one direction is completed;
and step nine, taking down and converting the direction of the precise linear cutting clamping device for the titanium alloy weak-stiffness part, sequentially selecting the wing plate 8 in the other direction adjacent to the cut wing plate 8, and repeating the step four to the step eight until the thin-wall structures of the wing plates 8 in the four directions are completely cut.
The first rough cutting electrical parameters are set as follows: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 3.0mm/min, the current is 3.0A-3.5A, the voltage is 40V-45V, the jet pressure is 6L/min, and the wire electrode tension is 12N.
The second rough cutting electrical parameter is set as: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 12.0mm/min, the cutting current is 2.0A-2.2A, the cutting voltage is 50V-58V, the upper and lower jet flow pressure is 3L/min, and the wire electrode tension is 12N.
The first fine cutting electrical parameters are as follows: the discharge pulse time is 1 mu s, the discharge stop time is 22 mu s, the cutting speed is 14.0mm/min, the cutting current is 0.5A-0.6A, the cutting voltage is 60 v-65 v, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
The second fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 8.0mm/min, the cutting current is 8A-8.3A, the cutting voltage is 45V-55V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
The third fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 9.0mm/min, the cutting current is 5.9-6.0A, the cutting voltage is 30-32V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
Claims (9)
1. Accurate linear cutting clamping device of weak rigidity piece of titanium alloy, characterized by: the clamp comprises an upper cover (1), an E-shaped lower cover (2), a positioning pin (3) and a fixing screw (4), wherein the bottom surface of the E-shaped lower cover (2) is of a plate-shaped structure, a positioning reference table (201) is arranged on the upper portion of the edge of the bottom surface of the E-shaped lower cover (2), the side surface of the E-shaped lower cover (2) is III-shaped, the E-shaped lower cover (2) is attached to the upper cover (1) through the upper surface of the positioning reference table (201) and forms a cavity for clamping a thin-walled piece (7) through the positioning pin (3) and the screw, a positioning pin hole (5) and a fixing screw hole (6) for fixing a lower plane (702) of the thin-walled piece (7) are formed in the inner bottom surface of the E-shaped lower cover (2), and the E-shaped lower cover (2) is fixedly connected with the lower plane (702) of the thin-walled piece (; the middle part of the upper cover (1) is provided with a positioning pin hole (5) and a fixing screw hole (6) for fixing an upper plane (701) of a thin-wall part (7), and the lower part of the upper cover (1) is fixedly connected with the upper plane (701) of the thin-wall part (7) through a positioning pin (3) and a fixing screw (4).
2. The precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 1, which is characterized in that: the upper cover (1) is further provided with a positioning reference plane (703) corresponding to the positioning reference platform (201), and the positioning pin hole (5) and the fixing screw hole (6) of the upper cover (1) are both arranged on the positioning reference plane (703).
3. The precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 1, which is characterized in that: the bottom surface of the E-shaped lower cover (2) is also provided with a part positioning surface (202) which is corresponding to the lower plane of the thin-wall part (7) and is recessed downwards.
4. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part, which is used for the precise linear cutting and clamping device for the titanium alloy weak-stiffness part according to claim 1, is characterized in that: comprises the following steps which are sequentially carried out,
step one, selecting a slow-moving wire cutting machine tool, and matching brass electrode wires with the diameter of 0.2 mm;
secondly, starting the machine to enable the slow-walking wire cutting machine to return to the original point of the machine, correcting the verticality of the electrode wire of the machine, and recording a corresponding cutting program of the thin-walled part (7);
selecting a set of special fixture for cutting the slow-walking wire;
fixing the special fixture for slow-speed wire cutting at one corner of a workbench of a slow-speed wire machine tool, locking the E-shaped lower cover (2) by the special fixture for slow-speed wire cutting, and selecting the middle position of the E-shaped lower cover (2) at a clamping point;
fifthly, the thin-wall part (7), the upper cover (1) and the E-shaped lower cover (2) are positioned and fastened together through the positioning pin (3) and the fixing screw (4), the assembly of the titanium alloy weak-rigidity part precision linear cutting and clamping device is completed, four wing plates (8) in the thin-wall part (7) face four directions respectively, and one wing plate (8) is taken for processing;
sixthly, a lever dial indicator is used for aligning and aligning the thin-wall part (7), the precision of a datum plane is 5 microns, the edge and the number of the datum plane are searched, the datum point of the titanium alloy weak-rigidity part precision linear cutting clamping device is positioned, a corresponding cutting program is called, and cutting is carried out;
seventhly, the electrode wire penetrates through the notch (9) of the cutting area of the electrode wire to perform rough cutting 2 times and fine cutting 3 times on the thin-wall part of the wing plate (8) in the thin-wall part (7),
the margin left on the first side of the rough cutting is 0.08mm, the correction parameter uses the value of 0.271, the electrical parameter of the first rough cutting is set to carry out the first rough cutting,
resetting the cutting program after the rough cutting is finished for the first time, setting the correction parameter to be 0.191mm, setting the electrical parameter of the rough cutting for the second time, calling the cutting program again to start processing, performing the rough cutting for the second time,
after the secondary rough cutting is finished, the dial indicator is used for re-correcting, so that the position precision of the titanium alloy weak-stiffness part precision linear cutting clamping device is within a set value range, and then a cutting program is called to execute a precision cutting path;
step eight, performing fine cutting on the thin-wall structure of the wing plate (8) for 3 times, wherein the correction parameters of the fine cutting for 3 times are respectively the numerical values of 0.121mm, 0.104mm and 0.103mm, and setting the electrical parameters of the fine cutting for each time respectively, resetting the cutting program and calling the cutting program to perform the next fine cutting after the previous two times of fine cutting are completed, and completing the cutting of the thin-wall structure of the wing plate (8) in one direction;
and step nine, taking down and converting the direction of the precise linear cutting clamping device for the titanium alloy weak-stiffness part, sequentially selecting a wing plate (8) in the other direction adjacent to the cut wing plate (8), and repeating the step four to the step eight until the thin-wall structures of the wing plates (8) in the four directions are completely cut.
5. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 4, wherein the working method comprises the following steps: the first rough cutting electrical parameters are set as follows: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 3.0mm/min, the current is 3.0A-3.5A, the voltage is 40V-45V, the jet pressure is 6L/min, and the wire electrode tension is 12N.
6. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 4, wherein the working method comprises the following steps: the second rough cutting electrical parameter is set as: the discharge pulse time is 5 mus, the discharge stop time is 18 mus, the cutting speed is 12.0mm/min, the cutting current is 2.0A-2.2A, the cutting voltage is 50V-58V, the upper and lower jet flow pressure is 3L/min, and the wire electrode tension is 12N.
7. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 4, wherein the working method comprises the following steps: the first fine cutting electrical parameters are as follows: the discharge pulse time is 1 mu s, the discharge stop time is 22 mu s, the cutting speed is 14.0mm/min, the cutting current is 0.5A-0.6A, the cutting voltage is 60 v-65 v, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
8. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 4, wherein the working method comprises the following steps: the second fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 8.0mm/min, the cutting current is 8A-8.3A, the cutting voltage is 45V-55V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
9. The working method of the precise linear cutting and clamping device for the titanium alloy weak-stiffness part as claimed in claim 4, wherein the working method comprises the following steps: the third fine cutting electrical parameters are as follows: the discharge pulse time is 0.2 mu s, the discharge stop time is 1 mu s, the cutting speed is 9.0mm/min, the cutting current is 5.9-6.0A, the cutting voltage is 30-32V, the upper and lower jet flow pressure is 1.5L/min, and the wire electrode tension is 12N.
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| CN113751770A (en) * | 2021-10-08 | 2021-12-07 | 长春汽车工业高等专科学校 | Weak-rigidity flexible thin-wall part and ultra-precision machining method thereof |
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