A production process of straightening roll for stretch-bending straightening machine

Abstract

The application discloses a production process of a straightening roller for a stretch-bending straightening machine, which is mainly used for processing roller products. The production process comprises the following steps: rough machining the outer diameter of the straightening roller; performing surface quenching on the straightening roller; positioning and machining the two end shaft heads and the center hole of the straightening roller, drilling and tapping, milling the keyway, and boring the two end bearing holes; rough grinding the straightening roller; milling the spline of the straightening roller; performing aging treatment on the straightening roller; semi-precision grinding the roller surface of the straightening roller; super-precision polishing the roller surface of the straightening roller; and detecting the straightening roller, and after the detection, the straightening roller is cleaned, rust-proof packaged and stored in the warehouse. The application can greatly reduce the machining allowance of the blank, greatly reduce the number of production line equipment, labor input and labor intensity of the operating personnel, improve the product quality stability by 50%, and shorten the product processing cycle by about 60%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical equipment, in particular to a production process of roll products for a stretch-bending straightening machine. BACKGROUND

[0002] The straightening roll is a core component of the stretch-bending straightening machine for metallurgical equipment, which has the characteristics of a large length-diameter ratio, a diameter size of φ12-φ300mm, a length size of 500-6000mm, a long roll surface, easy warping deflection deformation, and high precision requirements such as surface roughness, cylindricity and straightness. The usual processing technology of the straightening roll is to first reserve a large excess blank, then sequentially roughen the excess on a universal ordinary lathe, finish machining on a general numerical control lathe, surface quenching, finish turning the shaft head on an ordinary numerical control lathe, milling the key and keyway on a universal milling machine, drilling and tapping on a drilling machine, rough grinding on an ordinary cylindrical grinding machine, aging treatment, fine grinding on an ordinary cylindrical grinding machine, and finishing treatment by a polishing machine. The above process has the following defects:

[0003] 1. The original processing method has low clamping and positioning precision and large deformation, so that the outer diameter excess of the blank reaches 8-12mm;

[0004] 2. The original processing technology has a long process adjustment time, few tools, and a long processing cycle;

[0005] 3. The original processing method adopts manual adjustment, which leads to an increase in product failure rate and high cost, and requires high professional level and quality of the operator and high labor intensity;

[0006] 4. The production efficiency is low, and many devices are required for the same output;

[0007] 5. The long processing cycle leads to a prolonged product delivery rate and slow capital turnover. SUMMARY

[0008] In order to overcome the defects of the prior art, the present application aims to provide a straightening roll production process for a stretch-bending straightening machine, so as to improve the automation degree, processing efficiency and precision of the roll products.

[0009] In order to achieve the above-mentioned application purpose, the production process of the present application comprises:

[0010] (a) roughening the outer diameter of the straightening roll on a full-automatic loading and unloading numerical control centerless lathe;

[0011] (b) surface quenching the straightening roll on an automatic horizontal surface quenching machine;

[0012] (c) positioning and machining the two end shaft heads and the center hole of the straightening roll, drilling and tapping, milling the keyway, and boring the two end bearing holes on a double-tool tower numerical control lathe;

[0013] (d) rough grinding the straightening roller on a full-automatic numerical control centerless grinding machine;

[0014] (e) milling the spline of the straightening roller on a four-axis three-linkage double-cutter shaft numerical control whirlwind milling machine;

[0015] (f) aging treatment of the straightening roller in an oil furnace at 120-140℃;

[0016] (g) semi-precision grinding of the roller surface of the straightening roller on a full-automatic loading and unloading numerical control cylindrical grinding machine;

[0017] (h) super-precision polishing of the roller surface of the straightening roller on a full-automatic numerical control super-precision grinding machine;

[0018] (i) detection of the straightening roller on a roughness detector, and after passing the detection, the straightening roller is cleaned, anti-rust packaged and warehoused.

[0019] The outer diameter of the straightening roller is roughly processed on a full-automatic loading and unloading numerical control centerless lathe, that is, the straightening roller with a forging blank processing allowance of 3-5mm is roughly processed on the full-automatic loading and unloading numerical control centerless lathe, so that the processing outer diameter size tolerance of the straightening roller reaches 0.03mm, the surface roughness reaches Ra0.8, and the processing time is shortened by 2 / 3, and the process flow is as follows:

[0020] (a) the straightening roller is lifted to the loading rack one by a crane, the working slope of the loading rack one is fixedly connected with the profile steel base one, and the straightening roller freely rolls down to the pneumatic automatic material pushing arm one through the working slope;

[0021] (b) the pneumatic automatic material pushing arm one is mainly composed of a cylinder one and a connecting rod mechanism one, the cylinder one drives one end of the connecting rod mechanism one hinged with the piston rod of the cylinder one, so that the other end of the connecting rod mechanism one realizes up-down movement, and the straightening roller on the pneumatic automatic material pushing arm one is pushed to the loading roller one; the loading roller one is mainly composed of a base one and an inclined transition baffle, the inclined transition baffle receives the straightening roller moved from the pneumatic automatic material pushing arm one, and the straightening roller freely rolls down to the feeding roller one of the feeding mechanism through the inclined transition baffle;

[0022] (c) the feeding mechanism is mainly composed of a base two, and the feeding roller one, a variable frequency speed regulation motor one and a chain wheel and chain mechanism one installed on the base two, the variable frequency speed regulation motor one drives the feeding roller one to realize feeding movement through the chain wheel and chain mechanism one; under the driving of the variable frequency speed regulation motor one, the feeding roller one of the feeding mechanism automatically centers and presses the straightening roller, and the straightening roller is sent into the front guide device by the feeding mechanism;

[0023] (d) The front guide device presses down the four pairs of feeding rollers two through the hydraulic cylinder one, and tightens the straightening roller. The coupling one is connected with the output shaft of the variable frequency servo motor eleven. The coupling one drives the four pairs of feeding rollers two to rotate, and realizes the clamping and conveying of the straightening roller. The front guide device clamps and conveys the straightening roller through the rotating feeding rollers two, and makes the straightening roller concentric with the main shaft of the main shaft device;

[0024] (e) The main shaft device mainly comprises a base frame three, a main shaft, a four-tool linkage tool disc device, a main motor and a synchronous belt. The four-tool linkage tool disc device is installed on the main shaft, and completes the turning of the straightening roller under the driving of the main motor and the synchronous belt. After the outer diameter surface of the straightening roller is turned, the straightening roller enters the middle rear guide device;

[0025] (f) The bidirectional cylinder of the middle rear guide device realizes the auxiliary support of the straightening roller through the elastic supports installed on the two sides thereof;

[0026] (g) The straightening roller enters the extraction device from the middle rear guide device under the pushing of the front guide device. The hydraulic cylinder two of the extraction device presses down the four pairs of feeding rollers three, and the feeding rollers three automatically center and tighten the straightening roller. The coupling two is connected with the output shaft of the variable frequency servo motor twelve. The coupling two drives the four pairs of feeding rollers three to rotate, and realizes the clamping and conveying of the straightening roller. The extraction device clamps and conveys the straightening roller through the rotating feeding rollers three, and conveys the straightening roller to the unloading roller way one with high precision;

[0027] (h) The unloading roller way one mainly comprises a base frame four and feeding rollers four, a variable frequency speed motor one and a chain wheel and chain mechanism one installed on the base frame four. The variable frequency speed motor one drives the feeding rollers four to realize the feeding movement through the chain wheel and chain mechanism one. Under the driving of the variable frequency speed motor one, the feeding rollers four automatically center and tighten the straightening roller, and drive the straightening roller to enter the pneumatic automatic material pushing arm two. When the straightening roller reaches the predetermined position, the pneumatic automatic material pushing arm two is started. The cylinder one pushes one end of the connecting rod mechanism two hinged with the piston rod of the cylinder one, so that the other end of the connecting rod mechanism two realizes the up-down movement, and the straightening roller on the pneumatic automatic material pushing arm two is pushed to the collecting platform of the unloading frame collecting table one. The unloading frame collecting table one comprises a base frame five and a collecting platform.

[0028] The surface of the straightening roller is quenched on the automatic horizontal surface quenching machine. The horizontal surface quenching deformation of the straightening roller is controlled within 0.3 mm, and the straightening treatment straightness reaches 0.1 mm. The surface quenching process of the straightening roller is as follows:

[0029] (a) The straightening roller is lifted to the unloading table frame two by the crane. The unloading table frame two is an inclined structure. The straightening roller freely rolls to the pneumatic automatic material pushing arm three. The cylinder two drives the pneumatic automatic material pushing arm three to move up and down, so that the pneumatic automatic material pushing arm three is connected with the unloading roller way two. The pneumatic automatic material pushing arm three pushes the straightening roller to the unloading roller way two.

[0030] (b) The variable frequency servo motor one of the second feeding roller drives a pair of conveying roller one to rotate, and the conveying roller one drives the straightening roller to rotate; the variable frequency servo motor two drives the top rod one to move horizontally through the ball screw one, and pushes the straightening roller into the horizontal surface quenching machine;

[0031] (c) The horizontal surface quenching machine mainly comprises a high-frequency power supply, a transformer, a heating inductor and a quenching water spraying ring. After the straightening roller is heated by the heating inductor and cooled by the quenching water spraying ring in the horizontal surface quenching machine, the cylinder three drives the pneumatic automatic material pushing arm four to move up and down, so that the pneumatic automatic material pushing arm four is connected with the discharging roller two arranged on the discharging collecting table base frame, and the pneumatic automatic material pushing arm four pushes the straightening roller to the discharging roller two;

[0032] (d) The crane is used to hoist the straightening roller to the feeding table three, the feeding table three is an inclined structure, the cylinder four drives the pneumatic automatic material pushing arm five to move up and down, so that the pneumatic automatic material pushing arm five is connected with the feeding table three, and the straightening roller is sent into the automatic straightening machine by the pneumatic automatic material pushing arm five; the hydraulic cylinder three of the automatic straightening machine is fixed on the rack, the straightening roller is straightened by the pressing block connected with the piston rod, the straightness of the straightening roller is detected by the grating ruler sensor in the automatic straightening machine and the signal is fed back to the control system, the control system adjusts the pressure of the automatic straightening machine according to the signal, and after the detection is qualified, the cylinder five drives the pneumatic automatic material pushing arm six to move up and down, so that the pneumatic automatic material pushing arm six is connected with the discharging rack collecting material table two fixed on the base frame six, and the pneumatic automatic material pushing arm six pushes the straightening roller into the discharging rack collecting material table two, and then the straightening roller is baled and enters the tempering furnace for stress relief treatment.

[0033] The two end shaft heads and the center hole of the straightening roller are positioned and machined on the double-tool-turret numerical control lathe, the holes are drilled and tapped, the key grooves are milled, and the two end bearing holes are bored, so that the coaxiality of the two end shaft heads and the holes of the straightening roller and the roller surface is ≤0.03mm, the machining efficiency is increased by 50%, and the qualified rate is increased by 50%; the process flow is as follows:

[0034] (a) The crane is used to hoist the straightening roller to the feeding table four, and the straightening rollers are placed separately on the grid table one;

[0035] (b) The variable frequency servo motor three fixed on the feeding truss drives the up-down-left-right moving manipulator one to move left and right through the ball screw two, and the variable frequency servo motor four drives the up-down-left-right moving manipulator one to move up and down through the ball screw three, so that the straightening roller is grabbed and sent into the double-tool-turret numerical control hollow spindle positioning device;

[0036] (c) the outer diameter of the radial clamping straightening roller of the hollow spindle positioning device of the double-tool turret numerical control lathe hollow spindle, the axial positioning clamp axially positions the straightening roller, the double-tool magazine of the two-end tool turret realizes forward and reverse rotation, processes the two-end shaft head of the straightening roller at the same time, ensures the coaxiality of the two-end dimensions of the straightening roller, after the processing is completed, the pulling-out device pulls out the straightening roller, the up-and-down movement mechanical arm one of the unloading truss one grabs the straightening roller to enter the unloading frame collecting material table three; the hollow spindle positioning device of the double-tool turret numerical control lathe mainly comprises a gear transmission mechanism, a pneumatic clamping device and a spindle rotating device, the pneumatic clamping device is clamped by the elastic chuck under the action of the air cylinder to realize radial clamping of the straightening roller; the axial positioning clamp mainly comprises a positioning base, a stop lever one and a pushing stop lever, the tool turret pushes the straightening roller to be axially limited by the stop lever, and then the tool turret is withdrawn, thereby realizing axial limiting of the straightening roller; after the processing is completed, the stop lever one for axial limiting is loosened, the pushing stop lever pushes the end face of the straightening roller to move, the other stop lever two clamps the straightening roller to continue to move axially to the main shaft positioning device, the pulling-out device supports the straightening roller to realize the pulling-out action, and the pulling-out device comprises an open pneumatic clamping jaw.

[0037] The straightening roller is coarsely ground on the full-automatic numerical control centerless grinding machine, and the grinding efficiency can be increased by 50%; the process flow is as follows:

[0038] (a) the straightening roller is lifted to the feeding table frame five by the crane, the straightening roller is moved up and down by the connecting rod mechanism three driven by the air cylinder six, the pneumatic automatic material pushing arm seven is connected with the feeding table frame five, and the straightening roller freely rolls to the pneumatic automatic material pushing arm seven; the feeding table frame five is welded by the profile steel base frame two;

[0039] (b) the straightening roller is pushed to the feeding roller way three by the pneumatic automatic material pushing arm seven, the straightening roller on the feeding roller way three enters the wheel pair conveying device one, performs the conveying action of rotating and moving forward, and is ground into the full-automatic numerical control centerless grinding machine; the variable frequency speed motor two on the feeding roller way three base frame seven drives the feeding roller way three to move through the chain wheel mechanism one, so that the straightening roller is conveyed; the wheel pair conveying device one is composed of a plurality of pairs of polyurethane rubber wheels;

[0040] (c) after the straightening roller is circularly ground multiple times by the full-automatic numerical control centerless grinding machine under the joint action of the grinding wheel, the guide wheel and the guide plate, the straightening roller reaches the required size and shape accuracy, and enters the discharging roller way three; the straightening roller is moved up and down by the connecting rod mechanism four driven by the air cylinder seven, the pneumatic automatic material pushing arm eight is connected with the discharging roller way three, the straightening roller freely rolls to the pneumatic automatic material pushing arm eight, the straightening roller is pushed into the unloading frame collecting material table four by the pneumatic automatic material pushing arm eight; the variable frequency speed motor three on the discharging roller way three base frame eight drives the discharging roller way three to move through the chain wheel mechanism two, so that the straightening roller is conveyed, and the discharging roller way three is composed of a plurality of pairs of plastic rollers one.

[0041] The process flow of milling spline of straightening roll on the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine is:

[0042] (a) The crane transports the straightening roll from the unloading rack to the loading rack seven; the grid table two of the loading rack six is installed on the welded base frame one;

[0043] (b) The frequency conversion servo motor five fixed on the truss base frame one drives the up-down and left-right moving manipulator two to realize left-right movement through the ball screw four, and the frequency conversion servo motor six drives the up-down and left-right moving manipulator two to realize up-down movement through the ball screw five;

[0044] (c) The up-down and left-right moving manipulator two of the up-down truss two grabs the straightening roll and sends it to the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine positioning device, the hydraulic chuck clamps the outer diameter of the straightening roll, and the tail center performs axial positioning, the alloy coating forming tool of the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine coarsely and finely mills the spline of the straightening roll, the spindle realizes arbitrary point positioning, accurate stopping, accurate indexing and self-locking, and the spline machining of the straightening roll is completed; the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine positioning device is mainly composed of upper and lower V-shaped positioning blocks and quick opening bolts, the V-shaped positioning block is connected with the quick opening bolt, one quick opening bolt is loosened, the V-shaped positioning block can rotate, and the quick clamping and loosening function of the straightening roll is realized;

[0045] (d) After the machining is completed, the up-down and left-right moving manipulator two of the up-down truss two grabs the straightening roll and enters the unloading rack collection table five; the grid table three of the unloading rack collection table five is installed on the welded base frame two.

[0046] Six, semi-precision grinding is performed on the roll surface of the straightening roll on the full-automatic loading and unloading numerical control cylindrical grinding machine, so that the straightness and cylindricity of the roll surface of the straightening roll reaches 0.005mm, the surface roughness reaches Ra0.2, the bearing site size of the grinding shaft head, and the coaxiality reaches 0.005mm; the process flow is:

[0047] (a) The crane transports the straightening roll to the loading rack seven;

[0048] (b) The three trusses for feeding and discharging are fixed on the truss base, the variable frequency servo motor seven on the three trusses for feeding and discharging drives the left and right moving manipulator three to realize left and right movement through the ball screw six, and the variable frequency servo motor eight drives the left and right moving manipulator three to realize up and down movement through the ball screw seven; the straightening roll is grabbed by the left and right moving manipulator three and sent to the bracket positioning device of the full-automatic feeding and discharging numerical control cylindrical grinding machine, the head rest center and the tail rest center of the full-automatic feeding and discharging numerical control cylindrical grinding machine axially fix the straightening roll, the high-speed and high-precision CBN grinding wheel spindle with a speed of 80 m / s is adopted, the grinding wheel after precise dressing grinds the straightening roll, the precise cylindrical and end surface measuring instrument is used, and the processing size is controlled in a closed loop to ensure the grinding quality; the bracket positioning device is composed of multiple open center frames;

[0049] (c) After grinding, the left and right moving manipulator three grabs the straightening roll and sends it to the discharging rack collecting table six; the grid table four of the discharging rack collecting table six is installed on the welded base three.

[0050] The surface of the straightening roll is super-finished and polished on the full-automatic numerical control super-fine grinding machine, the purpose is to eliminate the spiral pattern, vibration pattern and net pattern defects of the surface of the straightening roll (46), so that the roughness of the roll surface reaches Ra0.1 or more, and the coaxiality of the shaft head reaches 0.005 mm; the process flow is:

[0051] (a) The straightening roll is lifted by the crane to the feeding table eight, the feeding table eight installed on the base nine is of inclined structure; the cylinder eight of the pneumatic automatic material shifting arm nine drives the pneumatic automatic material shifting arm nine to move up and down, so that the pneumatic automatic material shifting arm nine is connected with the feeding table eight, and the straightening roll on the feeding table eight freely rolls onto the pneumatic automatic material shifting arm nine;

[0052] (b) The pneumatic automatic material shifting arm nine shifts the straightening roll to the feeding roller way four, the variable frequency speed motor four of the feeding roller way four installed on the base ten drives the plastic roller two to realize feeding motion through the chain wheel and chain mechanism two, and the straightening roll is conveyed to the pair of wheel conveying device two;

[0053] (c) The pair of wheel conveying device two is composed of multiple bearing seats and multiple pairs of wheel groups, the multiple pairs of wheel groups of the pair of wheel conveying device two rotate under the drive of the variable frequency servo motor thirteen, the variable frequency servo motor nine of the pushing device drives the top rod two to move horizontally through the ball screw eight, the straightening roll is conveyed in the pair of wheel conveying device two by rotating and moving forward, and is pushed into the super-finish polishing area of the full-automatic numerical control super-fine grinding machine, the super-finish polishing area of the full-automatic numerical control super-fine grinding machine is composed of multiple polishing heads, and is divided into fine polishing, super-fine polishing and polishing;

[0054] (d) The variable frequency servo motor ten drives the conveying roller way two to rotate, the conveying roller way two drives the straightening roll to rotate, the straightening roll is pushed into the roughness appearance detection machine, and the appearance of the straightening roll is detected by the roughness appearance detection machine;

[0055] (e) The cylinder nine of the pneumatic automatic material pushing arm ten drives the pneumatic automatic material pushing arm ten to move up and down, and the qualified straightening roll is pushed to the collecting material table seven of the lower material frame by the pneumatic automatic material pushing arm ten, and then is packaged into the warehouse after cleaning and rust prevention.

[0056] Compared with the prior art, the full-automatic production line is adopted, so that the number of production line equipment, manual input and labor intensity of operators are greatly reduced, product quality stability is improved by 50%, and product processing cycle can be shortened by about 60%, and the following advantages are obtained.

[0057] 1. The outer diameter of the straightening roll is roughly processed on the full-automatic feeding and discharging numerical control centerless lathe by using a forged blank, so that the processing allowance of the blank can be greatly reduced, and the processing efficiency and the utilization rate of raw materials are improved.

[0058] 2. The surface of the straightening roll is quenched on the automatic horizontal surface quenching machine, so that the surface hardness of the straightening roll can be effectively improved.

[0059] 3. The two end shaft heads and the center hole of the straightening roll are positioned and processed, drilling and tapping, key groove milling and boring of the two end bearing holes are carried out on the double-tool-tower numerical control lathe, so that the coaxiality of the two end shaft heads of the straightening roll can be improved.

[0060] 4. The straightening roll is roughly ground on the full-automatic numerical control centerless grinding machine, so that the processing cycle of the straightening roll can be effectively shortened.

[0061] 5. The straightening roll is subjected to aging treatment in the 120-140℃ oil furnace, so that the internal stress of the straightening roll can be eliminated, and the size of the straightening roll is stabilized.

[0062] 6. The roll surface of the straightening roll is super-finished and polished on the full-automatic numerical control super-finish grinding machine, so that the roughness of the roll surface of the straightening roll can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 The process flow chart of the present application.

[0064] Figure 2 The structure diagram of the present application for rough processing of the outer diameter of the straightening roll on the automatic feeding and discharging numerical control centerless lathe.

[0065] Figure 3 The structure diagram of the present application for surface quenching of the straightening roll on the automatic horizontal surface quenching machine.

[0066] Figure 4 The structure diagram of the present application for positioning and processing of the two end shaft heads and the center hole of the straightening roll, drilling and tapping, key groove milling and boring of the two end bearing holes on the double-tool-tower numerical control lathe.

[0067] Figure 5The structure diagram of the present application is used for rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine.

[0068] Figure 6 The structure diagram of the present application is used for milling spline of the straightening roller on the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine.

[0069] Figure 7 The structure diagram of the present application is used for rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine. Figure 6 The structure diagram of the present application is used for rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine.

[0070] Figure 8 The structure diagram of the present application is used for rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine.

[0071] Figure 9 The structure diagram of the present application is used for rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine. DETAILED DESCRIPTION

[0072] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 The production process of the present application comprises:

[0073] (a) rough machining of the outer diameter of the straightening roller on the automatic loading and unloading numerical control centerless lathe;

[0074] (b) surface quenching of the straightening roller on the automatic horizontal surface quenching machine;

[0075] (c) positioning machining of the two end shafts and the center hole of the straightening roller, drilling and tapping, milling keyway, boring the two end bearing holes on the double-tool-tower numerical control lathe;

[0076] (d) rough grinding of the straightening roller on the full-automatic numerical control centerless grinding machine;

[0077] (e) milling spline of the straightening roller on the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine;

[0078] (f) aging treatment of the straightening roller in the 120-140℃ oil furnace;

[0079] (g) semi-precision grinding of the roller surface of the straightening roller on the full-automatic loading and unloading numerical control cylindrical grinding machine;

[0080] (h) super-precision polishing of the roller surface of the straightening roller on the full-automatic numerical control super-precision grinding machine;

[0081] (i) detection of the straightening roller on the roughness detection machine, and after passing the detection, the straightening roller is cleaned, rust-proof packaged and warehoused.

[0082] The specific process flow of the present application is described as follows:

[0083] I. Rough machining of the outer diameter of the straightening roll on the full-automatic loading and unloading numerical control centerless lathe, that is, the straightening roll 46 with a machining allowance of 3-5 mm of the forging blank is rough machined on the full-automatic loading and unloading numerical control centerless lathe, so that the machining outer diameter size tolerance of the straightening roll 46 reaches 0.03 mm, the surface roughness reaches Ra0.8, and the machining time is shortened by 2 / 3, and the process flow is as follows:

[0084] (a) The straightening roll 46 is lifted to the loading rack one 1 by the crane, the working slope 48 of the loading rack one 1 is fixedly connected with the section steel base one 47, and the straightening roll 46 freely rolls down to the pneumatic automatic material pushing arm one 2 through the working slope 48;

[0085] (b) The pneumatic automatic material pushing arm one 2 is mainly composed of the cylinder one 51 and the connecting rod mechanism one 49, the cylinder one 51 pushes one end of the connecting rod mechanism one 49 hinged with the piston rod of the cylinder one 51, so that the other end of the connecting rod mechanism one 49 realizes up and down movement, and the straightening roll 46 on the pneumatic automatic material pushing arm one 2 is pushed to the loading roller one 3; the loading roller one 3 is mainly composed of the base one 52 and the inclined transition baffle 53, the inclined transition baffle 53 receives the straightening roll 46 moved from the pneumatic automatic material pushing arm one 2, and the straightening roll 46 freely rolls down to the feeding roller one 54 of the feeding mechanism 4 through the inclined transition baffle 53;

[0086] (c) The feeding mechanism 4 is mainly composed of the base two 55, and the feeding roller one 54, the variable frequency speed regulation motor one 50, and the chain wheel and chain mechanism one 56 installed on the base two 55, the variable frequency speed regulation motor one 50 drives the feeding roller one 54 to realize feeding movement through the chain wheel and chain mechanism one 56; under the driving of the variable frequency speed regulation motor one 50, the feeding roller one 54 of the feeding mechanism 4 automatically centers and presses the straightening roll 46, and the straightening roll 46 is sent into the front guide device 5 by the feeding mechanism 4;

[0087] (d) The front guide device 5 presses down four pairs of feeding roller two 57 through the hydraulic cylinder one 58 to press the straightening roll 46, the coupling one 61 is connected with the output shaft of the variable frequency servo motor eleven 177, the coupling one 61 drives four pairs of feeding roller two 57 connected therewith to rotate, realizes clamping and conveying of the straightening roll 46, the front guide device 5 clamps and conveys the straightening roll 46 through the rotating feeding roller two 57, so that the straightening roll 46 is concentric with the main shaft 60 of the main shaft device 6;

[0088] (e) The main shaft device 6 is mainly composed of a base frame three 64, a main shaft 60, a four-tool linkage cutter head device 59, a main motor 62 and a synchronous belt 63. The four-tool linkage cutter head device 59 is installed on the main shaft 60, and the turning of the straightening roller 46 is completed under the driving of the main motor 62 and the synchronous belt 63. After the outer diameter surface of the straightening roller 46 is turned, the straightening roller 46 enters the middle and rear guide device 7;

[0089] (f) The bidirectional cylinder 69 of the middle and rear guide device 7 realizes auxiliary support for the straightening roller 46 through the elastic supports 68 installed on both sides of the bidirectional cylinder 69;

[0090] (g) The straightening roller 46 enters the extraction device 8 from the middle and rear guide device 7 under the pushing of the front guide device 5. The hydraulic cylinder two 66 of the extraction device 8 presses down the four pairs of feeding rollers three 65. The feeding rollers three 65 are automatically centered and tightly press the straightening roller 46. The coupling two 67 is connected with the output shaft of the variable frequency servo motor twelve 178. The coupling two 67 drives the four pairs of feeding rollers three 65 connected therewith to rotate, realizes the clamping and conveying of the straightening roller 46, and conveys the straightening roller 46 to the unloading roller way one 9 with high precision through the rotating feeding rollers three 65.

[0091] (h) The unloading roller way one 9 is mainly composed of a base frame four 71, feeding rollers four 70 installed on the base frame four 71, a variable frequency speed regulation motor one 50, a chain wheel and chain mechanism one 56. The variable frequency speed regulation motor one 50 drives the feeding rollers four 70 to realize the feeding movement through the chain wheel and chain mechanism one 56. Under the driving of the variable frequency speed regulation motor one 50, the feeding rollers four 70 are automatically centered and tightly press the straightening roller 46, and drive the straightening roller 46 to enter the pneumatic automatic material pushing arm two 10. When the straightening roller 46 reaches the predetermined position, the pneumatic automatic material pushing arm two 10 is started. The cylinder one 51 pushes one end of the connecting rod mechanism two 72 hinged with the piston rod of the cylinder one 51, so that the other end of the connecting rod mechanism two 72 realizes the up and down movement, and the straightening roller 46 on the pneumatic automatic material pushing arm two 10 is pneumatically pushed to the collecting platform 74 of the unloading frame collecting material table one 11. The unloading frame collecting material table one 11 is composed of a base frame five 73 and a collecting platform 74.

[0092] II. The surface of the straightening roller 46 is quenched on the automatic horizontal surface quenching machine, so that the horizontal surface quenching deformation of the straightening roller 46 is controlled within 0.3 mm, and the straightness after straightening treatment reaches 0.1 mm. The surface quenching process of the straightening roller 46 is as follows:

[0093] (a) The straightening roller 46 is lifted to the unloading table frame two 12 by the crane. The unloading table frame two 12 is an inclined structure. The straightening roller 46 freely rolls to the pneumatic automatic material pushing arm three 13. The cylinder two 75 drives the pneumatic automatic material pushing arm three 13 to move up and down, so that the pneumatic automatic material pushing arm three 13 is connected with the unloading roller way two 14. The pneumatic automatic material pushing arm three 13 pushes the straightening roller 46 to the unloading roller way two 14.

[0094] (b) The frequency conversion servo motor 76 of the feeding roller 14 drives a pair of conveying roller 77 to rotate, and the conveying roller 77 drives the straightening roller 46 to rotate; the frequency conversion servo motor 80 drives the ejector rod 78 to move horizontally through the ball screw 79, and pushes the straightening roller 46 into the horizontal surface quenching machine 15;

[0095] (c) The horizontal surface quenching machine 15 mainly includes a high-frequency power supply 83, a transformer 84, a heating inductor 81 and a quenching water spraying ring 82. After the straightening roller 46 is heated by the heating inductor 81 and cooled by the quenching water spraying ring 82 in the horizontal surface quenching machine 15, the cylinder 86 pushes the pneumatic automatic material shifting arm 85 to move up and down, so that the pneumatic automatic material shifting arm 85 is connected with the discharging roller 16 arranged on the discharging collecting table base frame 87, and the pneumatic automatic material shifting arm 85 shifts the straightening roller 46 to the discharging roller 16;

[0096] (d) The crane is used to lift the straightening roller 46 to the feeding table frame 92, the feeding table frame 92 is an inclined structure, the cylinder 96 pushes the pneumatic automatic material shifting arm 95 to move up and down, so that the pneumatic automatic material shifting arm 95 is connected with the feeding table frame 92, and the pneumatic automatic material shifting arm 95 sends the straightening roller 46 into the automatic straightening machine 17; the hydraulic cylinder 89 of the automatic straightening machine 17 is fixed on the rack 91, the straightening roller 46 is straightened by the pressing block 90 connected with the piston rod, the grating ruler inductor 88 in the automatic straightening machine 17 detects the straightness of the straightening roller 46 and feeds back signals to the control system, the control system adjusts the pressing amount of the automatic straightening machine 17 according to the signals, after the detection is qualified, the cylinder 97 pushes the pneumatic automatic material shifting arm 96 to move up and down, so that the pneumatic automatic material shifting arm 96 is connected with the discharging rack collecting material table 2 19 fixed on the base frame 95, and the pneumatic automatic material shifting arm 96 shifts the straightening roller 46 into the discharging rack collecting material table 2 19, and packs into the tempering furnace for stress relief treatment.

[0097] Three, the two end shaft heads and the center hole of the straightening roller are positioned and machined on the double-tool-tower numerical control lathe, the holes are drilled and tapped, the key grooves are milled, and the two end bearing holes are bored, so that the coaxiality of the two end shaft heads and the holes of the straightening roller 46 and the roller surface is ≤0.03mm, the machining efficiency is increased by 50%, and the qualified rate is increased by 50%; the process flow is as follows:

[0098] (a) The crane is used to lift the straightening roller 46 to the feeding table frame 4 20, and the straightening roller 46 is placed separately on the grid table surface 1 98;

[0099] (b) The variable frequency servo motor three 100 fixed on the feeding truss 21 drives the up-down and left-right moving manipulator 99 to realize left-right movement, the variable frequency servo motor four 102 drives the up-down and left-right moving manipulator 99 to realize up-down movement through the ball screw three 103, the up-down and left-right moving manipulator 99 grabs the straightening roller 46 and sends it to the double-tool turret CNC lathe hollow spindle positioning device 22;

[0100] (c) The double-tool turret CNC lathe hollow spindle positioning device 22 radially clamps the outer diameter of the straightening roller 46, the axial positioning clamp 104 axially positions the straightening roller 46, and the double-tool turret 105 realizes forward and reverse rotation to process the two end shafts of the straightening roller 46 simultaneously, ensuring the coaxiality of the two end dimensions of the straightening roller 46, after processing, the pull-out device 106 pulls out the straightening roller 46, and the up-down and left-right moving manipulator 99 of the feeding truss 21 grabs the straightening roller 46 and enters the unloading rack collecting table 24; The double-tool turret CNC lathe hollow spindle positioning device 22 mainly consists of a gear transmission mechanism 107, a pneumatic clamping device 108, and a spindle rotating device 109, the pneumatic clamping device 108 is clamped by the elastic chuck under the action of the air cylinder to realize radial clamping of the straightening roller 46; The axial positioning clamp 104 mainly consists of a positioning base 110, a stop lever 111, and a push-out stop lever 112, the straightening roller 46 is axially positioned by the stop lever 111 after being pushed by the turret 105, and then the turret 105 is withdrawn, realizing axial positioning of the straightening roller 46; After processing, the stop lever 111 used for axial positioning is loosened, the push-out stop lever 112 pushes the end face of the straightening roller 46 to move, the other side stop lever 179 clamps the straightening roller 46 to continue axial movement to completely exit the spindle positioning device 22, and the pull-out device 106 supports the straightening roller 46 to realize the pull-out action, the pull-out device 106 is composed of an open pneumatic claw, which can realize loosening and clamping actions.

[0101] Four, the straightening roller 46 is coarsely ground on the full-automatic CNC centerless grinding machine, and the grinding efficiency can be improved by 50%; the process flow is as follows:

[0102] (a) The crane is used to hoist the straightening roller 46 to the feeding table 113, the straightening roller 46 is moved up and down by the cylinder 114 pushing the connecting rod mechanism 115, the pneumatic automatic material pushing arm 26 is connected with the feeding table 113, and the straightening roller 46 freely rolls onto the pneumatic automatic material pushing arm 26; The feeding table 113 is welded by the section steel base 25;

[0103] (b) The pneumatic automatic material pushing arm seven 126 pushes the straightening roller 46 to the third feeding roller way 127, and the straightening roller 46 on the third feeding roller way 127 enters the pair of wheel conveying device one 121 to perform the conveying action of rotating and moving forward, and enters the full-automatic numerical control centerless grinding machine 28 to be ground; the variable frequency speed regulation motor two 119 on the base frame seven 118 of the third feeding roller way 127 drives the third feeding roller way 127 to move through the chain wheel mechanism one 120, so that the straightening roller 46 is conveyed; the pair of wheel conveying device one 121 is composed of a plurality of pairs of polyurethane rubber wheels 116;

[0104] (c) After the full-automatic numerical control centerless grinding machine 28 performs multiple cycle grinding on the straightening roller 46 under the joint action of the grinding wheel 122, the guide wheel 123 and the guide plate 124, the straightening roller 46 reaches the required size and shape accuracy, and enters the third discharging roller way 129; the straightening roller 46 moves up and down through the cylinder seven 130 to drive the connecting rod mechanism four 129, so that the pneumatic automatic material pushing arm eight 130 is connected with the third discharging roller way 129, the straightening roller 46 freely rolls to the pneumatic automatic material pushing arm eight 130, and the straightening roller 46 is pushed into the discharging rack collecting material table four 131 through the pneumatic automatic material pushing arm eight 130; the variable frequency speed regulation motor three 125 on the base frame eight 128 of the third discharging roller way 129 drives the third discharging roller way 129 to move through the chain wheel mechanism two 126, so that the straightening roller 46 is conveyed, and the third discharging roller way 129 is composed of a plurality of pairs of plastic rollers one 127.

[0105] Five, the process flow of milling the spline of the straightening roller on the four-axis three-linkage double-tool-shaft numerical control whirlwind milling machine is:

[0106] (a) The crane transports the straightening roller 46 from the discharging rack collecting material table four 131 to the feeding rack six 132; the grid rack surface two 132 of the feeding rack six 132 is mounted on the welded base frame one 131;

[0107] (b) The variable frequency servo motor five 136 fixed on the truss base frame one 135 drives the up-down and left-right moving manipulator two 133 to move left and right through the ball screw four 137, and the variable frequency servo motor six 138 drives the up-down and left-right moving manipulator two 133 to move up and down through the ball screw five 139;

[0108] (c) The upper and lower left and right moving manipulator two 133 of the upper and lower truss two 33 grabs the straightening roll 46 and sends it to the four-axis three-link double-tool spindle numerical control whirlwind milling machine positioning device 34, the hydraulic chuck 134 clamps the outer diameter of the straightening roll 46, the tail center 140 axially positions the straightening roll 46, the alloy coating forming tool of the four-axis three-link double-tool spindle numerical control whirlwind milling machine coarsely and finely mills the spline of the straightening roll 46, the spindle realizes arbitrary point positioning, accurate stopping, precise indexing, self-locking, and the spline machining of the straightening roll 46 is completed; the four-axis three-link double-tool spindle numerical control whirlwind milling machine positioning device 34 is mainly composed of upper and lower V-shaped positioning blocks 141 and quick opening bolts 142, the V-shaped positioning block 141 is connected with the quick opening bolt 142, one quick opening bolt 142 is loosened, the V-shaped positioning block 141 can rotate, and the quick clamping and loosening function of the straightening roll 46 is realized;

[0109] (d) After processing, the upper and lower left and right moving manipulator two 133 of the upper and lower truss two 33 grabs the straightening roll 46 and sends it to the unloading rack collecting table five 35; the grid table surface three 143 of the unloading rack collecting table five 35 is installed on the welded base frame two 36.

[0110] Six, the roll surface of the straightening roll is semi-finely ground on the full-automatic feeding and discharging numerical control cylindrical grinding machine, so that the straightness and cylindricity of the roll surface of the straightening roll 46 reaches 0.005 mm, the surface roughness reaches Ra0.2, the bearing site size of the grinding shaft head reaches 0.005 mm, and the coaxiality reaches 0.005 mm; the technological process is as follows:

[0111] (a) The crane transports the straightening roll 46 to the feeding table frame seven 37;

[0112] (b) The upper and lower truss three 38 is fixed on the truss base frame 148, the frequency conversion servo motor seven 149 drives the upper and lower left and right moving manipulator three 144 to realize left and right movement through the ball screw six 150, the frequency conversion servo motor eight 151 drives the upper and lower left and right moving manipulator three 144 to realize up and down movement through the ball screw seven 152; the upper and lower left and right moving manipulator three 144 grabs the straightening roll 46 and sends it to the carrier positioning device 145 of the full-automatic feeding and discharging numerical control cylindrical grinding machine 39, the head frame center 146 and the tail frame center 147 axially fix the straightening roll 46, a high-speed and high-precision CBN grinding wheel spindle is adopted, the straightening roll 46 is ground by the grinding wheel after precise finishing, a precise cylindrical and end face measuring instrument is used, the processing size is closed-loop controlled to ensure the grinding quality; the carrier positioning device 145 is composed of a plurality of open center frames 153;

[0113] (c) After grinding, the upper and lower left and right moving manipulator three 144 grabs the straightening roll 46 and sends it to the unloading rack collecting table six 40; the grid table surface four 155 of the unloading rack collecting table six 40 is installed on the welded base frame three 154.

[0114] Seven, on the full automatic numerical control super grinding machine straightening roll roll surface super finishing, the purpose is to eliminate the straightening roll 46 roll surface spiral, vibration, net texture defects, the roll surface roughness to Ra0.1 above, the shaft head coaxial degree to 0.005 mm; its process flow is:

[0115] (a) with the crane straightening roll 46 hoisting to the loading bench eight 41, installed on the base frame nine 157 loading bench eight 41 is inclined structure; pneumatic automatic material arm nine 156 cylinder eight 160 push pneumatic automatic material arm nine 156 do up and down movement, make pneumatic automatic material arm nine 156 and loading bench eight 41 butt joint, loading bench eight 41 on the straightening roll 46 free roll to the pneumatic automatic material arm nine 156;

[0116] (b) pneumatic automatic material arm nine 156 straightening roll 46 to the loading roller four 158, installed on the base frame ten 166 loading roller four 158 variable frequency speed motor four 163 through the chain wheel chain mechanism two 164 drive plastic roller two 165 to realize the feeding movement, the straightening roll 46 is transported to the wheel conveying device two 159;

[0117] (c) wheel conveying device two 159 by a plurality of bearing seat 167 and a plurality of wheel group 168, wheel conveying device two 159 of a plurality of wheel group 168 in the variable frequency servo motor thirteen 176 driven rotation, push device 169 variable frequency servo motor nine 161 through the ball screw eight 162 drive the top bar two 171 do horizontal movement, straightening roll 46 in the wheel conveying device two 159 in the rotation of the front moving conveying action, is pushed into the full automatic numerical control super grinding machine 42 super finishing area, the full automatic numerical control super grinding machine 42 super finishing area by a plurality of polishing head, precision polishing, super finishing polishing;

[0118] (d) variable frequency servo motor ten 175 drive conveying roller two 174 rotation, conveying roller two 174 drive straightening roll 46 do rotation, straightening roll 46 into the roughness appearance detection machine 44, roughness appearance detection machine 44 on the appearance of the straightening roll 46 detection;

[0119] (e) pneumatic automatic material arm ten 170 cylinder nine 172 push pneumatic automatic material arm ten 170 do up and down movement, with the loading rack collection material table seven 45 butt joint, installed on the base frame eleven 173, qualified straightening roll 46 through pneumatic automatic material arm ten 170 to the loading rack collection material table seven 45, after cleaning and rust prevention packaging into warehouse.

Claims

1. A manufacturing process for straightening rollers used in a tension straightening machine, characterized in that: The production process includes: (a) The outer diameter of the straightening roller is rough machined on a fully automatic loading and unloading CNC centerless lathe, that is, the straightening roller (46) with a machining allowance of 3-5 mm for the forging blank is rough machined on a fully automatic loading and unloading CNC centerless lathe; (b) Surface hardening of the straightening rollers on an automatic horizontal surface hardening machine; (c) Position and machine the two ends of the straightening roller and the center hole, drill and tap, mill the keyway, and bore the bearing holes at both ends on a double turret CNC lathe; (d) Rough grinding of the straightening roller on a fully automatic CNC centerless grinder; (e) Milling the spline of the straightening roller on a four-axis three-linkage double-tool-axis CNC milling machine; (f) Aging treatment of the straightening rolls in an oil furnace at 120–140°C; (g) The roller surface of the straightening roller is semi-finished on a fully automatic CNC cylindrical grinding machine for loading and unloading; (h) The surface of the straightening roller is ultra-polished on a fully automatic CNC ultra-precision grinding machine; (i) The straightening rollers are inspected on a roughness testing machine. After passing the inspection, they are cleaned, rust-proofed, packaged and put into storage.

2. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process flow for rough machining the outer diameter of the straightening roller on a fully automated CNC centerless lathe is as follows: (a) The straightening roller (46) is hoisted onto the loading platform (1) by a crane. The working slope (48) of the loading platform (1) is fixedly connected to the steel base frame (47). The straightening roller (46) rolls freely down the working slope (48) onto the pneumatic automatic feeding arm (2) that is connected to it. (b) The pneumatic automatic feeding arm (2) is composed of a cylinder (51) and a linkage mechanism (49). The cylinder (51) pushes one end of the linkage mechanism (49) which is hinged to the piston rod of the cylinder (51), so that the other end of the linkage mechanism (49) moves up and down, and pushes the straightening roller (46) on the pneumatic automatic feeding arm (2) onto the feeding roller track (3). The feeding roller track (3) is composed of a base frame (52) and an inclined transition baffle (53). The inclined transition baffle (53) receives the straightening roller (46) that moves from the pneumatic automatic feeding arm (2), and the straightening roller (46) rolls freely onto the feeding roller (54) of the feeding mechanism (4) that is connected to it. (c) The feeding mechanism (4) consists of a base frame (55), a feeding roller (54) mounted on the base frame (55), a variable frequency speed control motor (50), and a sprocket and chain mechanism (56). The variable frequency speed control motor (50) drives the feeding roller (54) through the sprocket and chain mechanism (56) to achieve feeding motion. Under the drive of the variable frequency speed control motor (50), the feeding roller (54) of the feeding mechanism (4) automatically centers and presses the straightening roller (46), and the feeding mechanism (4) sends the straightening roller (46) into the guide device (5). (d) The leading device (5) presses down four pairs of feed rollers (57) through hydraulic cylinder (58) to clamp the straightening roller (46). The coupling (61) is connected to the output shaft of the variable frequency servo motor (177). The coupling (61) drives the four pairs of feed rollers (57) connected to it to rotate, thereby clamping and conveying the straightening roller (46). The leading device (5) clamps and conveys the straightening roller (46) through the rotating feed rollers (57), so that the straightening roller (46) is concentric with the main shaft (60) of the main shaft device (6). (e) The spindle device (6) consists of a base frame (64), a spindle (60), a four-blade linkage cutter head device (59), a main motor (62), and a synchronous belt (63). The four-blade linkage cutter head device (59) is mounted on the spindle (60) and completes the turning of the straightening roller (46) under the drive of the main motor (62) and the synchronous belt (63). After the outer diameter surface of the straightening roller (46) is turned, it enters the intermediate and rear guide device (7). (f) The bidirectional cylinder (69) of the rear guide device (7) provides auxiliary support to the straightening roller (46) through the elastic supports (68) installed on both sides of it; (g) The straightening roller (46) is pushed by the front guide device (5) from the middle and rear guide device (7) into the extraction device (8). The hydraulic cylinder two (66) of the extraction device (8) presses down the four pairs of feed rollers three (65). The feed rollers three (65) automatically center and clamp the straightening roller (46). The coupling two (67) is connected to the output shaft of the variable frequency servo motor twelve (178). The coupling two (67) drives the four pairs of feed rollers three (65) connected to it to rotate, realizing the clamping and conveying of the straightening roller (46). The extraction device (8) clamps and conveys the straightening roller (46) through the rotating feed rollers three (65), and conveys the straightening roller (46) to the unloading roller table one (9) with high precision. (h) The feeding roller chute (9) consists of a base frame (71), a feed roller (70) mounted on the base frame (71), a variable frequency speed control motor (50), and a sprocket and chain mechanism (56). The variable frequency speed control motor (50) drives the feed roller (70) through the sprocket and chain mechanism (56) to achieve feeding motion. Under the drive of the variable frequency speed control motor (50), the feed roller (70) automatically centers and presses the straightening roller (46), driving the straightening roller (46) into the pneumatic automatic feeding arm (9). 10) When the straightening roller (46) reaches the predetermined position, the pneumatic automatic feeding arm two (10) is started, and the cylinder one (51) pushes one end of the linkage mechanism two (72) which is hinged to the piston rod of the cylinder one (51), so that the other end of the linkage mechanism two (72) moves up and down, and pneumatically feeds the straightening roller (46) on the pneumatic automatic feeding arm two (10) to the collection platform (74) of the unloading rack collection platform one (11); the unloading rack collection platform one (11) is composed of the base frame five (73) and the collection platform (74).

3. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process of surface hardening the straightening roller (46) on an automatic horizontal surface hardening machine is as follows: (a) The straightening roller (46) is hoisted onto the loading platform two (12) by a crane. The loading platform two (12) is an inclined structure. The straightening roller (46) rolls freely onto the pneumatic automatic feeding arm three (13). The cylinder two (75) pushes the pneumatic automatic feeding arm three (13) to move up and down, so that the pneumatic automatic feeding arm three (13) connects with the loading roller track two (14). The pneumatic automatic feeding arm three (13) feeds the straightening roller (46) onto the loading roller track two (14). (b) The variable frequency servo motor (76) of the second feeding roller conveyor (14) drives a pair of conveying roller conveyors (77) to rotate, and the conveying roller conveyors (77) drive the straightening roller (46) to rotate; the variable frequency servo motor (80) drives the top rod (78) to move horizontally through the ball screw (79), pushing the straightening roller (46) into the horizontal surface hardening machine (15); (c) The horizontal surface hardening machine (15) includes a high-frequency power supply (83), a transformer (84), a heating inductor (81) and a quenching spray ring (82). After the straightening roller (46) is heated by the heating inductor (81) and cooled by the quenching spray ring (82) in the horizontal surface hardening machine (15), the cylinder three (86) pushes the pneumatic automatic feeding arm four (85) to move up and down, so that the pneumatic automatic feeding arm four (85) docks with the feeding roller table two (16) mounted on the feeding collection platform base frame (87). The pneumatic automatic feeding arm four (85) feeds the straightening roller (46) onto the feeding roller table two (16). (d) The straightening roller (46) is hoisted onto the loading platform three (92) by a crane. The loading platform three (92) is an inclined structure. The cylinder four (96) pushes the pneumatic automatic feeding arm five (93) to move up and down, so that the pneumatic automatic feeding arm five (93) docks with the loading platform three (92). The pneumatic automatic feeding arm five (93) sends the straightening roller (46) into the automatic straightening machine (17). The hydraulic cylinder three (89) of the automatic straightening machine (17) is fixed on the frame (91). The straightening roller (46) is straightened by the pressure block (90) connected to the piston rod. The automatic straightening machine straightens the roller (46). The grating ruler sensor (88) inside the straightening machine (17) detects the straightness of the straightening roller (46) and feeds back a signal to the control system. The control system adjusts the pressing amount of the automatic straightening machine (17) according to the signal. After the test is qualified, the cylinder five (97) pushes the pneumatic automatic feeding arm six (18) to move up and down, so that the pneumatic automatic feeding arm six (18) docks with the material collection platform two (19) fixed on the base frame six (95). The pneumatic automatic feeding arm six (18) moves the straightening roller (46) into the material collection platform two (19), bundles it and puts it into the tempering furnace for stress relief treatment.

4. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process flow for positioning and machining the two ends and center hole of the straightening roller on a double-turret CNC lathe, drilling and tapping, milling keyways, and boring the bearing holes at both ends is as follows: (a) The straightening roller (46) is hoisted onto the loading platform four (20) by a crane, and the straightening roller (46) is placed separately on the grid platform one (98); (b) The variable frequency servo motor three (100) fixed on the loading gantry (21) drives the up-down and left-right moving robot arm one (99) to move left and right through the ball screw two (101). The variable frequency servo motor four (102) drives the up-down and left-right moving robot arm one (99) to move up and down through the ball screw three (103). The up-down and left-right moving robot arm one (99) grabs the straightening roller (46) and sends it into the hollow spindle positioning device (22) of the double turret CNC lathe. (c) The hollow spindle of the double-turret CNC lathe is radially clamped to the outer diameter of the straightening roller (46) by the hollow spindle positioning device (22). The axial positioning fixture (104) positions the straightening roller (46) axially. The double tool magazine (23) of the two-end turret (105) rotates in both directions to process the two ends of the straightening roller (46) simultaneously, ensuring the coaxiality of the dimensions of the two ends of the straightening roller (46). After processing, the extraction device (106) pulls out the straightening roller (46). The up-down and left-right moving manipulator (99) of the loading and unloading gantry (21) grabs the straightening roller (46) and puts it into the unloading rack collection platform (24). The double-turret CNC lathe hollow spindle positioning device (22) is composed of a gear transmission mechanism (107), a pneumatic clamping device (108) and a spindle rotation device (109). The clamping device (108) is a flexible chuck that contracts and clamps under the action of a cylinder to achieve radial clamping of the straightening roller (46); the axial positioning fixture (104) consists of a positioning base (110), a stop bar one (111), and a push-out stop bar (112). The turret (105) pushes the straightening roller (46) to be axially limited by the stop bar one (111) and then withdraws to achieve axial limiting of the straightening roller (46); after processing, the stop bar one (111) used for axial limiting is released, the push-out stop bar (112) pushes the end face of the straightening roller (46) to move, and the stop bar two (179) on the other side clamps the straightening roller (46) to continue to move axially until it is completely withdrawn from the spindle positioning device (22). The straightening roller (46) is supported by the extraction device (106) to achieve the extraction action. The extraction device (106) consists of an open pneumatic chuck.

5. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process of rough grinding the straightening roller (46) on a fully automatic CNC centerless grinder is as follows: (a) The straightening roller (46) is hoisted onto the loading platform five (113) by a crane. The straightening roller (46) moves up and down by the linkage mechanism three (115) driven by the cylinder six (114), so that the pneumatic automatic feeding arm seven (26) docks with the loading platform five (113) and the straightening roller (46) rolls freely onto the pneumatic automatic feeding arm seven (26); the loading platform five (113) is welded from the steel base frame two (25); (b) The pneumatic automatic feeding arm seven (26) feeds the straightening roller (46) onto the feeding roller conveyor three (27). The straightening roller (46) on the feeding roller conveyor three (27) enters the roller conveyor one (121) and performs a conveying action of rotating and moving forward, and enters the fully automatic CNC centerless grinder (28) for grinding. The variable frequency speed control motor two (119) on the base frame seven (118) of the feeding roller conveyor three (27) drives the feeding roller conveyor three (27) to move through the sprocket mechanism one (120) to realize the conveying of the straightening roller (46). The roller conveyor one (121) is composed of multiple pairs of polyurethane rubber wheels (116). (c) The fully automatic CNC centerless grinder (28) grinds the straightening roller (46) multiple times under the combined action of the grinding wheel (122), guide wheel (123), and guide plate (124) to achieve the required size and positional accuracy, and then enters the unloading roller table three (29); the straightening roller (46) moves up and down by the cylinder seven (130) pushing the linkage mechanism four (129), so that the pneumatic automatic feeding arm eight (30) docks with the unloading roller table three (29), and the straightening roller (46) The straightening roller (46) rolls freely onto the pneumatic automatic feeding arm eight (30), and the pneumatic automatic feeding arm eight (30) moves the straightening roller (46) into the material collection platform four (31) of the unloading rack; the variable frequency speed control motor three (125) on the base frame eight (128) of the unloading roller track three (29) drives the unloading roller track three (29) to move through the sprocket mechanism two (126), thereby realizing the conveying of the straightening roller (46). The unloading roller track three (29) is composed of multiple pairs of plastic rollers one (127).

6. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process flow for milling straightening roller splines on a four-axis, three-linkage, double-tool-axis CNC milling machine is as follows: (a) The crane moves the straightening roller (46) from the unloading rack collection platform four (31) to the loading platform six (32); the grid platform two (132) of the loading platform six (32) is mounted on the welding base frame one (131); (b) The variable frequency servo motor five (136) fixed on the truss base frame one (135) drives the up-down and left-right moving robot two (133) to move left and right through the ball screw four (137), and the variable frequency servo motor six (138) drives the up-down and left-right moving robot two (133) to move up and down through the ball screw five (139). (c) The two-axis (33) loading and unloading gantry (33) moves up, down, left, and right, while the robotic arm (133) grabs the straightening roller (46) and feeds it into the positioning device (34) of the four-axis three-linkage double-cutter-axis CNC milling machine. The hydraulic chuck (134) clamps the outer diameter of the straightening roller (46), and the tail center (140) performs axial positioning of the straightening roller (46). The alloy-coated forming tool of the four-axis three-linkage double-cutter-axis CNC milling machine rough and finish mills the spline of the straightening roller (46), and the spindle realizes... Arbitrary point positioning, precise stopping, accurate indexing, and self-locking complete the spline machining of the straightening roller (46); the four-axis three-linkage double-tool-axis CNC cyclone milling machine positioning device (34) consists of upper and lower V-shaped positioning blocks (141) and quick-release bolts (142). The V-shaped positioning blocks (141) are connected to the quick-release bolts (142). When one quick-release bolt (142) is loosened, the V-shaped positioning block (141) can rotate, realizing the quick clamping and loosening function of the straightening roller (46); (d) After processing, the upper, lower and left and right moving robot arm 2 (133) of the loading and unloading gantry 2 (33) grabs the straightening roller (46) and enters the unloading rack collecting platform 5 (35); the grid platform 3 (143) of the unloading rack collecting platform 5 (35) is mounted on the welding base frame 2 (36).

7. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process of semi-finish grinding the roller surface of the straightening roller on a fully automatic CNC cylindrical grinding machine with loading and unloading is as follows: (a) The overhead crane transports the straightening roller (46) onto the loading platform seven (37); (b) Loading and unloading truss three (38) is fixed on truss base frame (148). The variable frequency servo motor seven (149) on loading and unloading truss three (38) drives the up-down and left-right moving robot three (144) to move left and right through the ball screw six (150). The variable frequency servo motor eight (151) drives the up-down and left-right moving robot three (144) to move up and down through the ball screw seven (152). The up-down and left-right moving robot three (144) grabs the straightening roller (46) and feeds it into the fully automatic loading and unloading CNC outer circle. On the bracket positioning device (145) of the grinding machine (39), the headstock center (146) and tailstock center (147) of the fully automatic loading and unloading CNC cylindrical grinding machine (39) axially fix the straightening roller (46). A high-speed, high-precision CBN grinding wheel spindle with a speed of 80m / s is used. The grinding wheel, after precision dressing, grinds the straightening roller (46). A precision outer diameter and end face measuring instrument is used to control the machining dimensions in a closed loop to ensure the grinding quality. The bracket positioning device (145) is composed of multiple open center supports (153). (c) After grinding is completed, the robot arm three (144) moves up, down and left and right to grab the straightening roller (46) and send it into the material collection platform six (40) of the unloading rack; the grid platform four (155) of the material collection platform six (40) is mounted on the welding base frame three (154).

8. The manufacturing process for straightening rollers in a tension straightening machine according to claim 1, characterized in that: The process of ultra-precision polishing of the straightening roller surface on a fully automatic CNC ultra-precision grinding machine, and inspection of the straightening roller on a roughness testing machine, followed by cleaning, rust prevention, packaging, and warehousing after passing the inspection, is as follows: (a) The straightening roller (46) is hoisted onto the loading platform eight (41) by a crane. The loading platform eight (41) mounted on the base frame nine (157) is an inclined structure. The cylinder eight (160) of the pneumatic automatic feeding arm nine (156) pushes the pneumatic automatic feeding arm nine (156) to move up and down, so that the pneumatic automatic feeding arm nine (156) docks with the loading platform eight (41), and the straightening roller (46) on the loading platform eight (41) rolls freely onto the pneumatic automatic feeding arm nine (156). (b) The pneumatic automatic feeding arm nine (156) feeds the straightening roller (46) onto the feeding roller conveyor four (158). The variable frequency speed control motor four (163) of the feeding roller conveyor four (158) mounted on the base frame ten (166) drives the plastic roller two (165) through the sprocket chain mechanism two (164) to achieve the feeding motion, and conveys the straightening roller (46) to the roller conveyor two (159); (c) The second pair of wheel conveying device (159) consists of multiple bearing seats (167) and multiple pairs of wheel sets (168). The multiple pairs of wheel sets (168) of the second pair of wheel conveying device (159) rotate under the drive of the variable frequency servo motor thirteen (176). The variable frequency servo motor nine (161) of the pushing device (169) drives the top rod two (171) to move horizontally through the ball screw eight (162). The straightening roller (46) rotates and moves forward in the second pair of wheel conveying device (159) and is pushed into the ultra-precision polishing area of ​​the fully automatic CNC ultra-precision grinding machine (42). The ultra-precision polishing area of ​​the fully automatic CNC ultra-precision grinding machine (42) consists of multiple polishing heads, which are divided into fine polishing and ultra-precision polishing. (d) The variable frequency servo motor 10 (175) drives the conveyor roller 2 (174) to rotate, and the conveyor roller 2 (174) drives the straightening roller (46) to rotate, pushing the straightening roller (46) into the roughness appearance inspection machine (44), and the roughness appearance inspection machine (44) inspects the appearance of the straightening roller (46); (e) The cylinder nine (172) of the pneumatic automatic feeding arm ten (170) pushes the pneumatic automatic feeding arm ten (170) to move up and down, and docks with the material collection platform seven (45) of the unloading rack mounted on the base frame eleven (173). The qualified straightening roller (46) is fed onto the material collection platform seven (45) of the unloading rack by the pneumatic automatic feeding arm ten (170), and after cleaning and rust prevention, it is packaged and stored.

Images