A method for processing ultra-large pure titanium cylinders

Abstract

This invention discloses a method for processing ultra-large pure titanium cylinders. The method includes: first, forcefully spinning a titanium cylinder blank into a cylinder; then, measuring the height and inner diameter of multiple parts of the cylinder, marking the positions of the largest and smallest dimensions; finally, adjusting a shaping device and fitting the cylinder into it for shaping; after shaping, measuring the ellipticity and straightness of the cylinder; and finally, when the cylinder dimensions are within acceptable limits, performing precision machining and polishing. The titanium cylinders processed by this invention exhibit high dimensional accuracy and strong overall rigidity.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of titanium cylinder processing, and particularly relates to a processing method for super-large-specification pure titanium cylinder. BACKGROUND

[0002] With the rapid development of electronic products, the increasing popularity of electric vehicles, portable electronic devices and renewable energy systems, the demand for high-quality copper foil is also increasing. At present, the method for producing copper foil worldwide generally adopts electrolysis, and the cathode roller is the core equipment for producing electrolytic copper foil. Since titanium alloy has the advantages of light weight, high strength, corrosion resistance and high temperature resistance, the existing cathode roller structure is changed from the previous stainless steel roller surface plated with chromium to a pure titanium roller surface. The pure titanium roller surface is realized by two ways. One is to roll and weld a titanium plate, and the other is to strongly spin. Since the weld surface treatment technology after welding has very high requirements, when the surface structure treatment effect and the base material structure are inconsistent, a bright band will be produced at the weld of the produced copper foil, affecting the quality of the copper foil product; therefore, copper foil manufacturers generally use a strongly spun seamless titanium cylinder to make the roller surface of the cathode roller.

[0003] With the increasing demand for super-large-specification cathode rollers, the specification of the strongly spun seamless titanium cylinder is also gradually increasing. The diameter develops from 500mm, 1000mm, 2016mm, 2700mm to 3000mm, 4000mm, and the thickness is only 30mm, the diameter to wall thickness ratio is more than 133 times, which belongs to an ultra-large thin-walled part, and the straightness and ovality are not easy to control. Especially for the strongly spun titanium cylinder, it is spun in several cuts at one time, and there are many uncontrollable factors in the process. In addition, titanium alloy has high strength, poor plasticity, strong deformation resistance, small elastic modulus, serious springback and high price. The size deviation of the strongly spun super-large-specification titanium cylinder is large, the size consistency is poor, the subsequent machining allowance is small, and the finishing process is complex, so the super-large-specification titanium cylinder product must be accurately shaped first, and then finished to ensure high precision of the finished titanium cylinder.

[0004] Therefore, the present application provides a processing method for super-large-specification pure titanium cylinder to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a processing method for super-large-specification pure titanium cylinder. The processing method first strongly spins the cylinder blank to obtain a titanium cylinder, applies the shaping device in the present application to the titanium cylinder to shape the titanium cylinder, and then finishes the titanium cylinder to ensure high precision of the finished size.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A processing method of a super-large specification pure titanium cylinder, comprising the following steps:

[0008] Step 1: fix the titanium cylinder blank on the circumference of the core mold, the core mold is sleeved on the main shaft of the spinning machine, then start the spinning machine, and the spinning machine and the spinning wheel jointly act on the titanium cylinder blank to strongly spin the titanium cylinder blank into a titanium cylinder;

[0009] Step 2: measure the height and inner diameter size of multiple positions of the titanium cylinder, then mark the position with the maximum size deviation relative to the standard circle, then adjust the shaping device, and sleeve the titanium cylinder into the shaping device to shape it;

[0010] Step 3: after the shaping of the titanium cylinder is completed, measure the ovality and straightness of the titanium cylinder, if the titanium cylinder size is qualified, then finish machining the titanium cylinder; otherwise, return to step 2 to continue shaping;

[0011] Step 4: polish the finished titanium cylinder, and spray emulsion for cooling during polishing.

[0012] Further, the shaping device in step 2 comprises an outer shaping mechanism and an inner shaping mechanism, the outer shaping mechanism is used for correcting the inner pressure of the titanium cylinder relative to the standard circle, and the inner shaping mechanism is used for correcting the outer push of the titanium cylinder relative to the standard circle;

[0013] The outer shaping mechanism comprises a support, the support is composed of a plurality of annular channel steels arranged on the circumference of the titanium cylinder and a plurality of support pipes arranged along the axial direction of the titanium cylinder, and the plurality of support pipes connect the plurality of annular channel steels into one body, and a plurality of shaping assemblies are uniformly arranged on each annular channel steel;

[0014] The inner shaping mechanism comprises a support bottom plate, a stand is fixedly arranged on the support bottom plate, a horizontally arranged center fixing block is screwed on the stand, inner shaping blocks are arranged at both ends of the center fixing block, and a telescopic assembly with adjustable length is arranged between the inner shaping blocks and the center fixing block.

[0015] Further, each telescopic assembly comprises an adjusting screw rod, one end of the adjusting screw rod is connected with one end of a support rod, and the other end of the support rod is connected with an inner shaping block.

[0016] Further, a plurality of shaping assemblies are uniformly arranged on the two side faces of the annular channel steels at both ends of the support, wherein a plurality of shaping assemblies are detachably connected on the outer side face, a plurality of shaping assemblies are fixedly connected on the inner side face, and a plurality of shaping assemblies are uniformly fixedly connected on one side face of the plurality of annular channel steels in the middle of the support.

[0017] Further, each of the shape correcting assemblies comprises a base plate, a supporting screw rod and an outer shape correcting block, one side of the base plate is fixedly connected with the annular channel steel, the other side is provided with a sliding channel, the sliding channel is provided with a sliding block, one end of the supporting screw rod is fixedly connected with the sliding block, the other end is connected with the outer shape correcting block, the position of the outer shape correcting block is changed by moving the sliding block.

[0018] Further, the outer shape correcting block and the inner shape correcting block are arc-shaped and are made of Q235 carbon steel plate, the arc surface diameter of the outer shape correcting block is the same as the outer circular surface diameter of the titanium cylinder body, and the arc surface diameter of the inner shape correcting block is the same as the inner circular surface diameter of the titanium cylinder body.

[0019] Further, spherical counterbores are arranged in the middle of the outer shape correcting block and the inner shape correcting block, the outer shape correcting block is rotatably connected with the supporting screw rod, and the inner shape correcting block is rotatably connected with the supporting rod.

[0020] Further, the side of the sliding channel is provided with a measuring scale.

[0021] Further, the step 2 specifically comprises the following steps.

[0022] Step 21: according to the measured height of the titanium cylinder body, it is judged whether the multiple shape correcting assemblies on the outer side of the annular channel steel at both ends of the support need to be installed, and then the shape correcting device is adjusted;

[0023] Step 22: according to the shape of the maximum position of the size deviation of the titanium cylinder body relative to the standard circle, the shape correcting sequence of the outer shape correcting mechanism and / or the inner shape correcting mechanism is selected, and the specific sequence is as follows:

[0024] If the maximum position of the size deviation of the titanium cylinder body relative to the standard circle is an outer convex shape, the outer shape correcting mechanism is adjusted first, the shape correcting is started from the outer convex position of the titanium cylinder body, the outer shape correcting blocks are symmetrically fed with the axis of the titanium cylinder body as the center, the sliding channel measuring scale value in the same support pipe direction is referred to, then the sliding block is pushed to make the outer shape correcting block feed a certain amount of value in the direction of the center of the titanium cylinder body, the sliding block on the adjacent annular channel steel is adjusted to make the outer shape correcting block feed an amount of value in the direction of the center which is 1 / 2 of the feeding amount at the position of the maximum size deviation, and finally the feeding amount of the outer shape correcting blocks at the remaining positions is adjusted, the arc surfaces of all the outer shape correcting blocks are tightly attached to the titanium cylinder body, the sliding channel scale values in the same support pipe direction are consistent, and the correction of the outer convex position of the titanium cylinder body is completed.

[0025] If the maximum position of the size deviation of the titanium cylinder body relative to the standard circle is an inner concave shape, the inner shape correcting mechanism is adjusted first, the shape correcting is started from the inner concave position of the titanium cylinder body, the inner shape correcting blocks are symmetrically fed with the axis of the titanium cylinder body as the center, the inner concave position is pushed outwards by rotating the adjusting screw rod to make the inner shape correcting block move towards the titanium cylinder body, and after the inner shape correcting block is corrected, the outer shape correcting block is adjusted according to the shape correcting condition.

[0026] If the maximum position of the size deviation of the titanium cylinder compared with the standard circle contains both the convex shape and the concave shape, and the size of the convex shape is the same as that of the concave shape, the order of the outer and inner calibrating mechanisms for calibrating the titanium cylinder is selected arbitrarily.

[0027] Further, the step 3 of the fine machining tool body comprises the following steps:

[0028] Step 31: The ellipticity and straightness of the calibrated titanium cylinder are measured, and if the size of the calibrated titanium cylinder is qualified, 3mm of the feed amount is given to all the outer calibrating blocks along the center direction of the calibrated titanium cylinder;

[0029] Step 32: After the inner calibrating mechanism is removed, the calibrated titanium cylinder is machined for cutting, and 80% to 90% of the calibrated titanium cylinder is cut off, and in the cutting process, a certain amount of emulsion is sprayed for cooling to prevent the machining deformation of the calibrated titanium cylinder caused by cutting heat;

[0030] Step 33: After the cutting of the calibrated titanium cylinder is completed, the calibrated titanium cylinder is placed for 3 to 4 hours, then all the outer calibrating blocks are withdrawn by 60% of the feed amount, and after being placed for 6 hours, the fine machined titanium cylinder is obtained.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] The present application is a processing method of a super-large specification pure titanium cylinder, which comprises the following steps: after a titanium cylinder blank is strongly spun to form a titanium cylinder, the height and the inner diameter size of multiple positions of the titanium cylinder are measured, and the maximum position of the size deviation of the titanium cylinder compared with the standard circle is marked, then the calibrating device is adjusted, and the titanium cylinder is sleeved into the calibrating device for calibration, the calibrating method applies the calibrating device in the present application, so that the calibration consistency is good, and the calibration accuracy is high; after the calibration of the titanium cylinder is completed, the ellipticity and straightness of the titanium cylinder are measured, when the size of the titanium cylinder is qualified, the titanium cylinder is fine machined to obtain a fine machined titanium cylinder, and the fine machined titanium cylinder is polished. In the fine machining process, the calibrating device in the present application plays a supporting role on the titanium cylinder, so that the overall rigidity of the titanium cylinder obtained after fine machining is strengthened on the basis of calibration. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are incorporated into and form part of the specification, are included to explain the principles of the application and, to this end, will be briefly described here.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced here. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative labor.

[0035] Figure 1 Flow chart of the processing method of the super-large specification pure titanium cylinder body of the present application;

[0036] Figure 2 Structural schematic diagram of the shape correcting device of the processing method of the super-large specification pure titanium cylinder body of the present application;

[0037] Figure 3 Structural schematic diagram of the outer shape correcting mechanism of the shape correcting device of the processing method of the super-large specification pure titanium cylinder body of the present application;

[0038] Figure 4 Partial structural schematic diagram of the outer shape correcting mechanism of the shape correcting device of the processing method of the super-large specification pure titanium cylinder body of the present application;

[0039] Figure 5 Structural schematic diagram of the inner shape correcting mechanism of the shape correcting device of the processing method of the super-large specification pure titanium cylinder body of the present application.

[0040] Wherein: 1 is the outer shape correcting mechanism; 2 is the inner shape correcting mechanism; 11 is the support; 12 is the annular channel steel; 13 is the support pipe; 14 is the shape correcting assembly; 21 is the support bottom plate; 22 is the column; 23 is the center fixing block; 24 is the telescopic assembly; 25 is the inner shape correcting block; 141 is the bottom plate; 142 is the support screw rod; 143 is the outer shape correcting block; 144 is the slide; 145 is the sliding block; 241 is the support rod; 242 is the adjusting screw rod. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail herein below, and the embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0042] Please refer to Figures 1-5 The embodiment of the present application provides a processing method of a super-large specification pure titanium cylinder body, comprising the following steps:

[0043] Step 1: fixing the titanium cylinder body blank on the circumference of the core mold, the core mold is sleeved on the main shaft of the spinning machine, then starting the spinning machine, and under the joint action of the spinning machine and the spinning wheel, the titanium cylinder body blank is strongly spun to form a titanium cylinder body;

[0044] Step 2: measuring the height and the inner diameter size of multiple positions of the titanium cylinder body, then marking the position with the maximum size deviation relative to the standard circle, then adjusting the shape correcting device, and sleeving the titanium cylinder body into the shape correcting device to correct the shape thereof;

[0045] Step 3: measure the height of the titanium cylinder and the inner diameter size of multiple positions, then mark the position of the titanium cylinder with the maximum deviation from the standard circle size, and then adjust the shaping device and put the titanium cylinder into the shaping device for shaping;

[0046] Step 4: polish the finished titanium cylinder, and spray emulsion for cooling during polishing.

[0047] In the embodiment of the application, the shaping device, as shown in Figures 2-5 The outer shaping mechanism 1 comprises a support 11, which is composed of five annular channel steels 12 arranged at intervals and parallel to the peripheral surface of the titanium cylinder and six support pipes 13 arranged along the axial direction of the titanium cylinder, the six support pipes 13 are uniformly distributed and connect the five annular channel steels 12 into one body, preferably, the annular channel steel 12 and the support pipe 13 are made of Q235 carbon steel plate, and 34 shaping assemblies 14 for correcting the roundness of the titanium cylinder are uniformly arranged on each annular channel steel 12; the inner shaping mechanism 2 comprises a support base plate 21, the support base plate 21 is fixedly provided with a stand 22, a center fixing block 23 horizontally arranged is screwed on the stand 22, inner shaping blocks 25 are respectively arranged at both ends of the center fixing block 23, and a telescopic assembly 24 capable of adjusting the length is arranged between the inner shaping block 25 and the center fixing block 23, each telescopic assembly 24 comprises an adjusting screw rod 242, one end of the adjusting screw rod 242 is screwed with the center fixing block 23, the other end is screwed with one end of a support rod 241, the other end of the support rod 241 is connected with the inner shaping block 25, a spherical counterbore is arranged in the middle of the inner shaping block 25, and the inner shaping block 25 is rotationally connected with the support rod 241.

[0048] In the embodiment of the application, as shown in Figures 3-4As shown, the annular channel steel 12 at both ends of the support 11 is uniformly provided with 34 shape correcting assemblies 14 on both sides, respectively, and the three annular channel steels 12 in the middle of the support 11 are uniformly provided with 34 shape correcting assemblies 14 on one side, respectively; the annular channel steel 12 at both ends of the support 11 is connected with 34 shape correcting assemblies 14 on the outer side through bolts, respectively; the annular channel steel 12 at both ends of the support 11 and all the middle annular channel steels 12 are connected with 34 shape correcting assemblies 14 on the inner side through welding, respectively; in addition, the plurality of shape correcting assemblies 14 provided on each annular channel steel 12 are arranged in parallel along the axial direction of the titanium cylinder body, and the outer shape correcting block 143 contained forms a circular surface, the center of which coincides with the center of the cross section of the titanium cylinder body, and such a structure can be symmetrically corrected, ensuring uniform correction force and easy correction; in addition, the bottom of the titanium cylinder body is provided with a special pad, which is fixed on the platform position corresponding to the shape correcting assembly 14 distributed along the circumferential direction of the titanium cylinder body, in order to reduce the stress of the outer shape correcting mechanism 1 and adjust the height of the titanium cylinder body. Specifically, each shape correcting assembly 14 comprises a bottom plate 141, a supporting screw 142 and an outer shape correcting block 143, wherein one side of the bottom plate 141 is fixedly connected with the annular channel steel 12, the other side is provided with a slide 144, a sliding block 145 is arranged on the slide 144, one end of the supporting screw 142 is connected with the sliding block 145, the other end is connected with the outer shape correcting block 143, a counterbore is designed at the center of the outer shape correcting block 143, the counterbore is made of numerical control machining, and the structure is spherical, which is convenient for multi-directional adjustment according to the actual surface deviation of the titanium cylinder body, so that the outer shape correcting block 143 is better fitted with the surface of the titanium cylinder body, and the correction force is more uniformly transmitted to the surface of the titanium cylinder body.

[0049] Specifically, the outer shape correcting block 143 is made of die stamping according to the machining characteristics of the titanium cylinder body, and has a specification of width 50mm, length 150mm and thickness 10mm, and an arc shape, and the arc surface diameter of the outer shape correcting block 143 is the same as the outer circular surface diameter of the titanium cylinder body, in order to enhance the rigidity of the titanium cylinder body during correction, and a copper belt is arranged on the arc surface of the outer shape correcting block 143, and the copper belt is connected and fixed with the outer shape correcting block 143 along the outer periphery of the thickness direction of the outer shape correcting block 143 through a countersunk screw, so that the copper belt is easy to replace and disassemble, and the specification of the copper belt is thickness 0.5mm and width 200mm, and the copper belt is arranged to prevent iron pollution of the surface of the titanium cylinder body during correction. The side of the slide 144 is provided with a measuring scale, and the zero position of the measuring scale is the theoretical size value of the titanium cylinder body.

[0050] Preferably, the outer shape correcting mechanism 1 adopts a finish machining surface, so that the shape correcting assemblies 14 arranged on each annular channel steel 12 are on the same circumference, and the supporting force of all the shape correcting assemblies 14 is on the same circular surface when the titanium cylinder body is corrected, thereby reducing the uneven force during correction.

[0051] In the embodiment of the present application, as shown inFigure 5 As shown, the adjusting screw rod 242 is threadedly connected with the center fixing block 23 and the support rod 241, the length of the inner calibrating mechanism 2 can be adjusted according to the inner diameter of the titanium cylinder, the inner calibrating block 25 is made according to the processing characteristics of the titanium cylinder, the specification is 50*50mm, the shape is arc, the arc diameter is the same as the inner diameter of the titanium cylinder, the copper belt is arranged on the arc surface of the inner calibrating block 25, the copper belt is connected and fixed with the inner calibrating block 25 along the outer periphery of the thickness direction of the inner calibrating block 25 through the countersunk screw, therefore, the copper belt is easy to replace and disassemble, the specification of the copper belt is thickness 0.5mm, width 200mm, the copper belt is arranged to prevent the surface of the titanium cylinder from being contaminated by iron during the calibrating process.

[0052] In the embodiment of the present application, as shown in Figure 1 The titanium cylinder calibrating in step 2 specifically includes the following steps:

[0053] Step 21: according to the measured height of the titanium cylinder, it is judged whether the multiple calibrating assemblies 14 on the outer side surface of the annular channel steel 12 at both ends of the support 11 need to be installed, and then the calibrating device is adjusted;

[0054] Step 22: according to the shape of the maximum position of the size deviation of the titanium cylinder relative to the standard circle, the calibrating sequence of the outer calibrating mechanism 1 and / or the inner calibrating mechanism 2 on the titanium cylinder is selected, and the specific sequence is as follows:

[0055] If the maximum position of the size deviation of the titanium cylinder relative to the standard circle is the outer convex shape, the outer calibrating mechanism 1 is adjusted first, the calibrating is started from the outer convex position of the titanium cylinder, the calibrating assembly 14 is symmetrically fed with the axis of the titanium cylinder as the center, the scale value is measured by referring to the slide 144 in the direction of the same support pipe 13, then the slide block 145 is pushed to make the outer calibrating block 143 feed a certain amount of value in the direction of the center of the titanium cylinder, the outer calibrating block 143 at the symmetric position feeds the titanium cylinder with the same amount of value with the axis of the titanium cylinder as the center, the slide block 145 of the adjacent annular channel steel 12 is adjusted to make the outer calibrating block 143 feed the center direction with the amount of value being 1 / 2 of the amount of value at the position of the maximum size deviation, the outer calibrating block 143 at the symmetric position feeds the titanium cylinder with the same amount of value, finally the amount of value of the outer calibrating block 143 at the remaining position is adjusted, the outer calibrating block 143 at the symmetric position feeds the titanium cylinder with the same amount of value, the arc surfaces of all the outer calibrating blocks 143 are tightly combined with the titanium cylinder, the scale values of the slides 144 in the same direction of the support pipe 13 are consistent, that is, the correction of the outer convex position of the titanium cylinder is completed;

[0056] If the maximum position of the size deviation of the titanium cylinder relative to the standard circle is in the form of an inner recess, then the inner calibrating mechanism 2 is first adjusted, and the inner recess of the titanium cylinder is calibrated, the inner calibrating block 25 is symmetrically fed with the axis of the titanium cylinder as the center, the inner calibrating block 25 is moved towards the titanium cylinder by rotating the adjusting screw 242, and the inner recess is pushed outwards, and when the inner calibrating block 25 is calibrated, the outer calibrating block 133 is adjusted according to the calibration condition;

[0057] If the maximum position of the size deviation of the titanium cylinder relative to the standard circle contains both the outer convex form and the inner recess form, and the size of the outer convex is the same as that of the inner recess, the calibration sequence of the outer calibrating mechanism 1 and the inner calibrating mechanism 2 on the titanium cylinder is arbitrarily selected.

[0058] In the embodiment of the present application, as shown in the figure, Figure 1 The titanium cylinder after calibration in step 3 includes the following steps:

[0059] Step 31: The ellipticity and straightness of the titanium cylinder after calibration are measured, and if the size of the titanium cylinder after calibration is qualified, then all the outer calibrating blocks 143 are fed by 3mm along the center direction of the titanium cylinder after calibration;

[0060] Step 32: After the inner calibrating mechanism 2 is removed, the titanium cylinder after calibration is machined for cutting, and 80% to 90% of the titanium cylinder after calibration is cut off, and in the cutting process, a certain amount of emulsion is sprayed for cooling to prevent the cutting heat from causing the titanium cylinder after calibration to be deformed during machining;

[0061] Step 33: After the titanium cylinder after calibration is cut, it is left for 3 to 4 hours, then all the outer calibrating blocks 143 are withdrawn by 60% of the feeding amount, and after being left for 6 hours, the titanium cylinder after finishing is obtained.

[0062] Preferably, in the embodiment of the present application, YG8 cutter is selected for cutting the titanium cylinder, the cutter tip is lower than the center of the workpiece, high speed machining is adopted, and the cutting speed is generally between 55 to 74 m / min; after finishing, a cylindrical polyurethane polishing head is assembled on the tool holder of the vertical lathe, and polishing is sequentially performed from top to bottom at low speed, and emulsion is sprayed for sufficient cooling during polishing.

[0063] The above only describes the specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0064] It should be understood that the present application is not limited to the above described and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A method for processing an ultra-large-size pure titanium cylinder, characterized in that, The method comprises the following steps: Step 1: fixing a titanium cylinder blank on the circumference of a core mold, the core mold being sleeved on a spinning machine spindle, then starting the spinning machine, and under the joint action of the spinning machine and a spinning wheel, the titanium cylinder blank is strongly spun to form a titanium cylinder; Step 2: measuring the height and the inner diameter of multiple positions of the titanium cylinder, then marking the position of the titanium cylinder with the maximum size deviation from a standard circle, then adjusting a shaping device, and sleeving the titanium cylinder into the shaping device to shape the titanium cylinder; Step 3: after the shaping of the titanium cylinder is completed, measuring the ovality and straightness of the titanium cylinder, if the size of the titanium cylinder is qualified, then the titanium cylinder is finished; otherwise, returning to step 2 to continue shaping; Step 4: polishing the finished titanium cylinder, and spraying emulsion to cool during the polishing process. The shaping device in step 2 comprises an outer shaping mechanism (1) and an inner shaping mechanism (2), the outer shaping mechanism (1) is used for correcting the inner pressure of the titanium cylinder which protrudes outward relative to a standard circle, and the inner shaping mechanism (2) is used for correcting the outer push of the titanium cylinder which is concave inward relative to the standard circle; The outer shaping mechanism (1) comprises a support (11), the support (1) is composed of multiple annular channel steels (12) which are spaced and parallel arranged on the circumference of the titanium cylinder and a plurality of support pipes (13) which are arranged along the axial direction of the titanium cylinder, and the plurality of support pipes (13) connect the multiple annular channel steels (11) into one body, and a plurality of shaping assemblies (14) are uniformly arranged on each annular channel steel (12); Each shaping assembly (14) comprises a bottom plate (141), a support screw (142) and an outer shaping block (143), one side of the bottom plate (141) is fixedly connected with the annular channel steel (12), the other side is provided with a slide (144), the slide (144) is provided with a sliding block (145), one end of the support screw (142) is fixedly connected with the sliding block (145), the other end is connected with the outer shaping block (143), and the position of the outer shaping block (143) is changed by moving the sliding block (145); The finishing tool in step 3 comprises the following steps: Step 31: measuring the ovality and straightness of the shaped titanium cylinder, if the size of the shaped titanium cylinder is qualified, then feeding all the outer shaping blocks (143) by 3mm along the center direction of the shaped titanium cylinder; Step 32: after the inner shaping mechanism (2) is removed, the shaped titanium cylinder is cut by machining, 80%-90% of the shaped titanium cylinder is cut off, and a certain amount of emulsion is sprayed to cool the cutting part during the cutting process to prevent the cutting heat from causing the shaped titanium cylinder to deform during machining; Step 33: after the cutting of the shaped titanium cylinder is completed, standing for 3-4 hours, then withdrawing all the outer shaping blocks (143) by 60% of the feeding amount, and after standing for 6 hours, the finished titanium cylinder is obtained.

2. The method of claim 1, wherein the method is a method of processing an ultra-large-sized pure titanium cylinder. The inner calibrating mechanism (2) comprises a supporting bottom plate (21), a vertical column (22) is fixedly arranged on the supporting bottom plate (21), a horizontally arranged central fixed block (23) is screwed on the vertical column (22), and inner calibrating blocks (25) are arranged at two ends of the central fixed block (23) respectively, and a telescopic assembly (24) capable of adjusting length is arranged between the inner calibrating block (25) and the central fixed block (23).

3. The method of claim 2, wherein the method is a method of processing an ultra-large-sized pure titanium cylinder, characterized by Each telescopic assembly (24) comprises an adjusting screw rod (242), one end of the adjusting screw rod (242) is connected with one end of a supporting rod (241), and the other end of the supporting rod (241) is connected with the inner calibrating block (25).

4. The method of claim 2, wherein the method is characterized by: A plurality of calibrating assemblies (14) are uniformly arranged on the two side faces of the annular channel steel (12) at the two ends of the support (11), wherein the plurality of calibrating assemblies (14) are detachably connected on the outer side face, and the plurality of calibrating assemblies (14) are fixedly connected on the inner side face; and the plurality of annular channel steels (12) in the middle of the support (11) are uniformly fixedly connected with the plurality of calibrating assemblies (14) on one side face.

5. The method of claim 2, wherein the method is a method of processing an ultra-large-scale pure titanium cylinder, characterized by The arc-shaped surfaces of the outer calibrating block (143) and the inner calibrating block (25) are made of Q235 carbon steel plate and are tightly attached to the titanium cylinder body, the arc surface diameter of the outer calibrating block (143) is the same as the outer circular surface diameter of the titanium cylinder body, and the arc surface diameter of the inner calibrating block (25) is the same as the inner circular surface diameter of the titanium cylinder body.

6. The method of producing an oversize pure titanium cylinder according to claim 2, wherein Spherical counterbores are arranged in the middle of the outer calibrating block (143) and the inner calibrating block (25), the outer calibrating block (143) is rotatably connected with the supporting screw rod (142), and the inner calibrating block (25) is rotatably connected with the supporting rod (241).

7. The method of producing an oversize pure titanium cylinder according to claim 2, wherein A measurement scale is arranged on the side face of the slide (144).

8. The method of producing an oversize pure titanium cylinder according to claim 2, wherein The calibrating in step 2 specifically comprises the following steps: Step 21: according to the measured height of the titanium cylinder body, it is judged whether the plurality of calibrating assemblies (14) on the outer side face of the annular channel steel (12) at the two ends of the support (11) need to be installed, and then the calibrating device is adjusted; Step 22: according to the shape of the maximum position of the relative standard circular size deviation of the titanium cylinder body, the calibrating sequence of the outer calibrating mechanism (1) and / or the inner calibrating mechanism (2) on the titanium cylinder body is selected, and the specific sequence is as follows: If the maximum position of the relative standard circular size deviation of the titanium cylinder body is an outward convex shape, the outer calibrating mechanism (1) is adjusted first, the calibrating is started from the outward convex position of the titanium cylinder body, the calibrating assembly (14) is symmetrically fed with the axis of the titanium cylinder body as the center, the scale value of the slide (144) in the direction of the same supporting pipe (13) is measured, then the slide block (145) is pushed to make the outer calibrating block (143) feed a certain amount of value in the direction of the center of the titanium cylinder body, the slide block (145) on the adjacent annular channel steel (12) is adjusted to make the outer calibrating block (143) feed an amount of value in the direction of the center of the titanium cylinder body which is 1 / 2 of the feeding amount at the position of the maximum size deviation, finally the feeding amount of the outer calibrating block (143) at the remaining positions is adjusted, the arc surfaces of all the outer calibrating blocks (143) are tightly attached to the titanium cylinder body, and the scale values of the slides (144) in the same supporting pipe (13) direction are consistent, that is, the correction of the outward convex position of the titanium cylinder body is completed; If the maximum position of the relative standard circular size deviation of the titanium cylinder is in the form of inner concave, then the inner calibrating mechanism (2) is adjusted first, and the inner concave of the titanium cylinder is calibrated. The inner calibrating block (25) is symmetrically fed with the axis of the titanium cylinder as the center, the adjusting screw rod (242) is rotated to move the inner calibrating block (25) to the titanium cylinder and push the inner concave outward, and when the inner calibrating block (25) is calibrated, the outer calibrating block (133) is adjusted according to the calibration condition. If the maximum position of the relative standard circular size deviation of the titanium cylinder contains both the outer convex form and the inner concave form, and the size of the outer convex is the same as that of the inner concave, the calibration sequence of the outer calibrating mechanism (1) and the inner calibrating mechanism (2) on the titanium cylinder is arbitrarily selected.

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