Thread rolling machine convenient for digitally adjusting thread rolling parameters

Abstract

The invention discloses a thread rolling machine convenient for digitally adjusting thread rolling parameters, relates to the technical field of thread machining, and solves the problems that the angle adjustment of two thread rolling plates is inconvenient, and the thread rolling precision is influenced. The thread rolling machine comprises a left thread rolling die and a right thread rolling die. Wherein the left thread rolling die comprises a left sliding table seat, a left die mounting seat, a first thread rolling plate and a taper adjusting mechanism; the taper adjusting mechanism comprises a first adjusting block; the right thread rolling die comprises a right sliding table seat capable of sliding, a right die mounting seat, a second thread rolling plate, a distance adjusting mechanism and a parallelism adjusting mechanism; the parallelism adjusting mechanism comprises a second adjusting block; at least one slope area is arranged on the face, provided with the tooth bodies, of the second thread rolling plate, and the slope areas are arranged on the upper edge of the second thread rolling plate. The two thread rolling plates can synchronously and oppositely move up and down, the slope area can support a blank, and the first thread rolling plate and the second thread rolling plate can be adjusted at multiple angles and are parallel to each other, so that the machining precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of thread processing, in particular to a thread rolling machine which is convenient for digitally adjusting thread rolling parameters. Background Art

[0002] A thread rolling machine is a professional device for processing threads. When using a thread rolling plate to process the external thread of a threaded part (such as the external thread of a bolt or screw), the thread rolling machine drives one of the thread rolling plates to reciprocate. The two thread rolling plates are one stationary and one moving. Finally, the tooth patterns on the thread rolling plates are used to roll out thread teeth on the part or structure to be processed to form an external thread, such as the thread rolling machine shown in publication number CN107649627B.

[0003] Traditional thread rolling machines still rely on manual adjustments for adjusting the spacing, taper, and parallelism of the rolling plates. Specifically, the spacing, parallelism, and taper of the rolling plates are all manually adjusted using four large bolts. Individual adjustments can affect each other, leading to inconsistent results and inconsistent dimensional consistency. This leads to significant waste of aviation material blanks for equipment adjustments. However, aviation fastener blanks are expensive, and this significant waste leads to significant losses. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and to design a thread rolling machine that is easy to digitally adjust the thread rolling parameters, thereby solving the problem that the angle adjustment of the two thread rolling plates is inconvenient and affects the thread rolling accuracy.

[0005] The technical solution of the present invention to achieve the above-mentioned purpose is a thread rolling machine that is convenient for digitally adjusting thread rolling parameters, comprising: A left thread rolling die and a right thread rolling die, wherein the left thread rolling die and the right thread rolling die are arranged relative to each other and can move synchronously upward and downward toward each other; The left thread rolling die comprises a left sliding base, a left die mounting base deflected around a vertical axis on one side of the left sliding base, a first thread rolling plate mounted on the left die mounting base, and a taper adjustment mechanism for controlling the deflection of the left die mounting base; The taper adjustment mechanism includes a first adjustment block, which can be horizontally inserted into the gap between the left slide base and the left mold mounting base to control the horizontal deflection of the left mold mounting base relative to one side of the left slide base; The right thread rolling die includes a slidable right sliding base, a right die mounting base deflected around a horizontal axis on one side of the right sliding base, a second thread rolling plate mounted on the right die mounting base, a spacing adjustment mechanism for controlling the right sliding base to approach or move away from the left thread rolling die, and a parallelism adjustment mechanism for controlling the deflection of the right die mounting base; The parallelism adjusting mechanism comprises a second adjusting block which can be vertically inserted into the gap between the right slide base and the right die mounting base to control the upward deflection of the right die mounting base relative to the right slide base; The first and second thread rolling dies are respectively fixed on opposite sides of the left and right die mounting bases, and the opposite surfaces of the first and second thread rolling dies have a plurality of teeth extending along the surfaces of the first and second thread rolling dies.

[0006] Further, the side of the second thread rolling die having the teeth is provided with at least one ramp region arranged at the upper edge of the second thread rolling die for supporting the blank and guiding the blank into the machining space formed between the first and second thread rolling dies.

[0007] Further, the left thread rolling die further comprises a left fixing base capable of ascending and descending, the left slide base is installed on the side of the left fixing base, a rotating shaft and a rotating shaft positioning block are arranged between the left slide base and the left die mounting base, the opposite sides of the left slide base and the left die mounting base are provided with a first accommodating groove and a second accommodating groove, the rotating shaft positioning block is arranged in the first accommodating groove, the rotating shaft is vertically arranged in the second accommodating groove and is rotationally connected with the rotating shaft positioning block, the left die mounting base is provided with a screw for tightly fixing the left die mounting base on the left slide base, the screw is in sequence threaded through the left die mounting base, the left slide base and is screwed with the left fixing base, and the screw is clearance-fitted with the through holes in the left die mounting base and the left slide base.

[0008] Further, a semicircular shaft is arranged between the left die mounting base and the first adjusting block, the side of the left die mounting base close to the left slide base is provided with a positioning groove matched with the arc surface of the semicircular shaft, the semicircular shaft is vertically arranged in the positioning groove, and the side of the first adjusting block having an inclined surface is tightly attached to the side of the semicircular shaft having a flat surface.

[0009] Further, the side of the left slide base close to the left die mounting base has a recess, the first adjusting block can be horizontally inserted into the recess, the side wall of the recess is provided with a guide strip, the extending direction of the guide strip is consistent with the sliding direction of the first adjusting block, and the first adjusting block is provided with a guide groove matched with the guide strip.

[0010] Furthermore, the right thread rolling die also includes a right fixed seat, a support plate is provided at the bottom of the right fixed seat, the right sliding seat is horizontally slidably connected to the support plate, a rotating shaft and a rotating shaft positioning block are provided between the right sliding seat and the right mold mounting seat, the opposite sides of the right sliding seat and the right mold mounting seat have a third accommodating slot and a fourth accommodating slot, the rotating shaft positioning block is provided in the third accommodating slot, the rotating shaft is horizontally provided in the fourth accommodating slot and is rotatably connected to the rotating shaft positioning block, an oil cylinder is provided in the right fixed seat, and a driving rod of the oil cylinder is provided with a limiting piece, the driving rod of the oil cylinder passes through the right sliding seat and the right mold mounting seat in turn and is connected with the limiting piece, the driving rod of the oil cylinder can tighten and fix the right mold mounting seat on the right sliding seat, and the driving rod of the oil cylinder is clearance-matched with the through holes on the right sliding seat and the right mold mounting seat.

[0011] Furthermore, the spacing adjustment mechanism includes a third adjustment block that can move up and down. The third adjustment block is located between the right sliding seat and the right fixed seat, and is matched with the right sliding seat in an inclined surface. The third adjustment block has an avoidance hole for facilitating the passage of the driving rod of the oil cylinder, and the avoidance hole extends along the sliding direction of the third adjustment block.

[0012] Furthermore, a guide portion is formed on a protrusion on one side of the third adjustment block away from the right sliding seat, and the extension direction of the guide portion is consistent with the sliding direction of the third adjustment block. A guide groove that cooperates with the guide portion is provided on the right fixed seat.

[0013] Furthermore, a downward pressure positioning mechanism and an axial positioning mechanism are provided on the top of the right mold mounting seat. The downward pressure mechanism includes a pressure plate that can be raised and lowered, and the lower end of the pressure plate can extend into the processing space between the first thread rolling plate and the second thread rolling plate. The bottom surface of the pressure plate is a horizontal plane, and the axial positioning mechanism includes a fixed-length positioning plate that can move along a direction perpendicular to the spacing direction of the first thread rolling plate and the second thread rolling plate.

[0014] Furthermore, the downward pressure positioning mechanism also includes a bracket, a downward pressure cylinder connected to the bracket for upward and downward sliding through a guide rod, a lifting screw threadedly connected to the bracket, a clamping piece arranged on the bracket, and a knob threadedly connected to the clamping piece. The lower end of the lifting screw is connected to the downward pressure cylinder, and the upper end passes through the bracket and is connected to the handle. The knob can control the clamping piece to clamp or loosen the lifting screw, and the pressure plate is connected to the output end of the downward pressure cylinder.

[0015] Compared with the prior art, the beneficial effects are: In the present invention, the left thread rolling die and the right thread rolling die are both dynamic and can move in an offset manner up and down relative to each other. The first adjustment block in the left thread rolling die can be horizontally inserted into the gap between the left slide and the left die mounting seat, controlling the horizontal deflection of the left die mounting seat relative to one side of the left slide, thereby driving the first thread rolling plate to deflect horizontally to one side; the second adjustment block in the right thread rolling die can be vertically inserted into the gap between the right slide and the right die mounting seat, controlling the upward deflection of the right die mounting seat relative to the right slide, thereby driving the upward deflection of the second thread rolling plate. By adjusting the angles in two directions, the angle between the first thread rolling plate and the second thread rolling plate can be adjusted to ensure that the first thread rolling plate and the second thread rolling plate remain parallel, thereby improving the accuracy of the thread rolling process.

[0016] The second thread rolling plate on the right sliding seat is controlled by the spacing adjustment mechanism to move closer to or away from the first thread rolling plate to extrude the blank, and then move upward and downward synchronously to perform thread rolling processing.

[0017] At least one sloped area is provided on the side of the second thread rolling plate having the tooth body, and the sloped area is arranged on the upper edge of the second thread rolling plate. When loading, the blank will be stuck in the angle formed by the sloped area and the side surface of the first thread rolling plate. When the first thread rolling plate and the second thread rolling plate move toward each other up and down, the blank will automatically enter the processing space between the first thread rolling plate and the second thread rolling plate under the guidance of the sloped area. There is no need to clamp the blank through the first thread rolling plate and the second thread rolling plate before performing the thread rolling process. The loading is simple, convenient, safe and reliable.

[0018] By adjusting the first and second thread rolling plates at multiple angles, the first and second thread rolling plates are ensured to remain parallel, making it more convenient to adjust and control product processing dimensions such as outer diameter and middle diameter to improve processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the thread rolling machine in the present invention; Figure 2 This is a structural diagram of the thread rolling machine from another perspective; Figure 3 It is a structural diagram of the body of the thread rolling machine; Figure 4 yes Figure 3 A structural diagram from another perspective; Figure 5 It is a schematic diagram of the front view structure of the left thread rolling die and the right thread rolling die.

[0020] Figure 6 It is a schematic diagram of the axial structure of the left thread rolling die and the right thread rolling die; Figure 7 It is a structural diagram of the left thread rolling die; Figure 8 This is a structural diagram of the left thread rolling die from another perspective; Figure 9 It is a schematic diagram of the exploded structure of the left thread rolling die; Figure 10 Schematic diagram of the installation structure of various structures on the left die mounting base of the left thread rolling die; Figure 11 It is a structural diagram of the left sliding base in the left thread rolling die; Figure 12 This is a schematic diagram of the installation structure of the right thread rolling die, the downward pressure positioning structure and the axial positioning mechanism; Figure 13 It is a structural diagram of the right thread rolling die; Figure 14 This is a schematic diagram of the exploded structure of the right thread rolling die; Figure 15 It is a structural diagram of the downward pressing positioning mechanism; Figure 16 Schematic diagram of the first and second thread rolling plates when they are in cooperation with the blank; Figure 17 It is a schematic diagram of the installation structure of each structure on the turntable; Figure 18 It is a structural diagram of the material distribution component in the feeding mechanism; Figure 19 It is a structural diagram of the positioning component in the feeding mechanism; Figure 20 It is a structural diagram of the heating mechanism; Figure 21 It is a schematic diagram of the feeding mechanism cooperating with the positioning assembly and the heating mechanism; Figure 22 This is a schematic diagram of the locking mechanism. Figure 23 It is a structural diagram of the material distribution mechanism; Figure 24 It is a structural diagram of the separation mechanism from another perspective.

[0021] In the figure, 1. body; 2. left thread rolling die; 201. left fixed seat; 202. left slide seat; 2021. first receiving slot; 2022. second receiving slot; 203. left die mounting seat; 204. first thread rolling plate; 205. taper adjustment mechanism; 2051. fixed plate; 2052. commutator; 2053. first adjustment block; 2054. long screw; 206. die seat; 3. right thread rolling die; 301. right fixed seat; 302. right slide seat; 3021. third receiving slot; 3022. fourth receiving slot; 303. right die mounting seat; 304. second thread rolling plate; 3041. slope area; 305, parallelism adjustment mechanism; 3051, second adjustment block; 306, spacing adjustment mechanism; 3061, third adjustment block; 307, support plate; 4, feeding mechanism; 41, vibration plate assembly; 42, material distribution assembly; 421, support frame; 422, first support plate; 423, second support plate; 424, fixed support; 425, unloading slide; 426, material distribution cylinder; 427, material distribution plate; 428, first support plate; 429, second support plate; 43, positioning assembly; 431, cylinder fixing frame; 432, lifting cylinder; 433, V-shaped seat; 434, positioning slot plate; 435, material blocking plate; 5, feeding mechanism ;51. Feeding cylinder;52. Suction rod;6. Heating mechanism;61. Base frame;62. Lifting platform;63. Heater;64. Heating coil;7. Turntable;71. Mounting plate;72. Centering adjustment mechanism;73. Digital caliper;8. Servo drive mechanism;801. Servo motor;802. Screw;803. Motor mounting seat;9. Locking mechanism;91. First fixing member;92. Second fixing member;921. Stop part;93. Third fixing member;931. Connecting part;10. Bed;11. Oil return tank;12. Material distribution mechanism;121. Material distribution hopper;1211. Partition;122. Rotating cylinder;12 3. Material dividing baffle; 124. Pipeline; 13. Downward pressure positioning mechanism; 131. Bracket; 132. Downward pressure cylinder; 133. Pressing plate; 134. Lifting screw; 14. Axial positioning mechanism; 141. Fixed-length positioning plate; 15. Cooling oil pipe; 16. Clamping piece; 17. Knob; 18. Turning handle; 19. Rotating shaft; 20. Rotating shaft positioning block; 21. Semicircular shaft; 22. Fixed block; 23. Side fixing block; 24. Screw; 25. Nut; 26. Top pressure cylinder; 27. Guide bar; 28. Drive rod; 29. ​​Pull rod; 30. Balance cylinder; 31. Rotating shaft seat; 32. Material receiving oil tank; 33. Material box; 34. Blank. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] A preferred embodiment of the present invention provides a thread rolling machine that facilitates digital adjustment of thread rolling parameters. The angle between the two rolling plates can be freely adjusted, making it suitable for forming bolts of various specifications. The two slides in this machine are independently servo-driven, CNC-controlled, and move toward each other at constant speeds. The thread line between the two rolling plates remains consistent, ensuring that even if the blank has a size error of ten threads, the thread line remains unchanged, significantly reducing blank manufacturing costs.

[0024] For details, see Figures 1-6 The thread rolling machine mainly includes a body 1, a left thread rolling die 2, a right thread rolling die 3, a loading mechanism 4, a heating mechanism 6, a feeding mechanism 5, a downward pressure positioning mechanism 13, an axial positioning mechanism 14 and two servo drive mechanisms 8.

[0025] The fuselage 1 is made of cast iron, which is cast in one piece and has the advantages of high strength and not easy to deform. There is a square-shaped installation space on the fuselage 1 that runs through the front and back, making the fuselage 1 look like a square, and the left and right side walls of the installation space are also reinforced.

[0026] The design of this machine body 1 was based on the U-shaped structure used in conventional thread rolling machines. A mechanical analysis of this structure revealed that, under significant lateral loads, the traditional machine body, due to its inherent U-shaped nature, experiences bulging. This phenomenon is reflected in the dimensional fluctuations of the processed product, consistent with actual processing results, validating the theoretical analysis. To address this issue, conventional techniques incorporate a tension beam above the U-shaped body to mitigate this bulging phenomenon. However, due to the limitations of the tension beam size and mounting position, the degree of reduction in bulging varies.

[0027] Therefore, we use ductile iron to cast a "mouth" shaped closed load-bearing fuselage 1, perform stress relief annealing and aging treatment, and then process it into one piece to achieve precise control of the installation position and size of each component.

[0028] Finite element analysis was used to analyze stress, strain, and modal characteristics of the single, integrally cast, enclosed, U-shaped fuselage 1. A lateral uniform load of 200 kN was applied to the fuselage. Under this load, the maximum strain was only 0.0009011.

[0029] At the same time, the equivalent stress analysis of the U-shaped integral cast closed load-bearing fuselage 1 was carried out in Ansys software. The average equivalent stress of the fuselage under the extreme load condition was about 24.7 MPa, and the maximum value was about 257 MPa. It can be seen that the overall structural design of the fuselage is reasonable, and the rigidity and strength of the structure fully meet the requirements of the actual processing process. Even when subjected to extreme loads, the processing dimensional accuracy will not be lost due to excessive rigid deformation.

[0030] like Figure 2-Figure 3 As shown, two platforms 10 are provided on the left and right sides of the installation space on the machine body 1. The two platforms 10 are arranged opposite each other and fixed to the corresponding side walls of the installation space by bolts. Two servo drive mechanisms 8 are installed on the top of the machine body 1, respectively, directly above the two platforms 10.

[0031] The left thread rolling die 2 and the right thread rolling die 3 are arranged relative to each other and are respectively connected to the two bed platforms 10 for sliding up and down. The two servo drive mechanisms 8 respectively drive the left thread rolling die 2 and the right thread rolling die 3 to move synchronously toward each other up and down.

[0032] The opposite sides of the two beds 10 have a groove that runs through them from top to bottom, which is used to install the lead screw 802 in the servo drive mechanism 8. On the opposite sides of the two beds 10, a slide rail is provided on each side of the groove, and the left thread rolling die 2 and the right thread rolling die 3 are connected to the corresponding slide rails by sliders.

[0033] The main load-bearing components of the thread rolling machine are the integrally cast closed load-bearing body 1 in the shape of a U and the heavy-load slide rails and bed 10 on both sides. As the main load-bearing components of positive pressure, they directly determine whether the center diameter accuracy of the processed parts meets the standards and need to have the characteristics of high strength and high rigidity.

[0034] At the same time, finite element analysis was conducted on the two side beds and the U-shaped integral cast closed load-bearing fuselage. Due to the increase in the structural thickness of the main load-bearing part, the equivalent stress under the extreme load condition was reduced, and the average and maximum values ​​were both about 2 / 3 of the original.

[0035] The thickness of the fuselage 1 and the bed 10 have been thickened. Increasing the thickness of the load-bearing structure does not reduce the natural frequency of the structure. The actual processing rhythm of the machine tool is still much smaller than the natural frequency of the structure, and still maintains good anti-resonance characteristics.

[0036] See also Figure 3The servo drive mechanism 8 is mainly composed of a servo motor 801, a lead screw 802, and two bearing seats. The two bearing seats are respectively located on the upper and lower sides of the groove on the bed platform 10, and the upper and lower ends of the lead screw 802 are rotatably connected to the two bearing seats. A motor mounting seat 803 is provided on the top of each of the two beds 10, and the two servo motors 801 are respectively installed on the two motor mounting seats 803. Due to the limited size of the installation space, an avoidance hole is provided at the top of the fuselage 1 at the position corresponding to the servo motor 801, so that the fuselage 1 passes through the avoidance hole and passes out from the top of the fuselage 1. The upper end of the lead screw 802 is drive-connected to the output end of the servo motor 801.

[0037] The lead screw 802 is in transmission connection with the left thread rolling die 2 and the thread rolling die, and the servo motor 801 controls the lead screw 802 to rotate, thereby driving the left thread rolling die 2 or the right thread rolling die 3 to move up and down.

[0038] In this embodiment, the slide system adopts a high-performance servo digital motor and a large-load drive-level ball screw, which independently drives the up and down movement of the left thread rolling die 2 or the right thread rolling die 3 in the form of servo direct drive, and accurately controls the position of the bed 10 through the CNC system, thereby achieving high-precision control and positioning of the position of the bed 10.

[0039] Compared with the slide drive system of the traditional flywheel-connecting rod thread rolling machine, the servo direct drive system has the characteristics of good dynamic response, precise position control, fewer transmission links and small return clearance. At the same time, since the flywheel-connecting rod drive slide operates by relying on the inertia after the flywheel runs, the traditional thread rolling machine has the problems of difficulty in manual processing of single pieces and the difference between manual adjustment of processing dimensions and automatic processing. With the servo direct drive slide system, the driving force of the bed 10 is directly provided by the servo motor, and the instantaneous torque can be changed in real time as needed, thereby realizing more accurate position control during operation. At the same time, the servo direct drive slide system has obvious advantages over the traditional flywheel-connecting rod drive in tooth alignment operation, inching single piece processing, etc.

[0040] like Figure 7-11 As shown, the left thread rolling die 2 primarily consists of a left fixed base 201, a left sliding base 202, a left die mounting base 203, a taper adjustment mechanism 205, and a first thread rolling plate 204. The left fixed base 201 is connected to the slide rail on the platform 10 via a slider for vertical sliding movement. The left slide base 202 is bolted to the left fixed base 201 on the side facing away from the slide rail. The left die mounting base 203 is horizontally rotatable relative to the left slide base 202, and the first thread rolling plate 204 is mounted on the left die mounting base 203.

[0041] A first receiving slot 2021, a second receiving slot 2022, and a positioning slot are defined on opposite sides of the left slide 202 and the left mold mounting seat 203. The second receiving slot 2022 is located on the same side of the left slide 202 and the left mold mounting seat 203, extending vertically. The first receiving slot 2021 is located in the middle of the second receiving slot 2022, dividing it into two sections. The positioning slot is located on the other side of the left slide 202 and the left mold mounting seat 203 (away from the second receiving slot 2022).

[0042] The rotating shaft 19 and the rotating shaft positioning block 20 are located between the left slide 202 and the left mold mounting base 203. The rotating shaft 19 is vertically arranged and inserted into two second receiving grooves 2022. The second receiving grooves 2022 have a semicircular cross-section that matches the outer arc of the rotating shaft 19. The ends of the rotating shaft positioning block 20 are inserted into two first receiving grooves 2021. A circular hole is located in the center of the rotating shaft positioning block 20, through which the rotating shaft 19 passes.

[0043] The shaft positioning block 20 is secured to the left mold mounting base 203 with long bolts. The side of the shaft positioning block 20 is flat, resting against the sidewalls of the second receiving groove 2022 on the left mold mounting base 203. The other side of the shaft positioning block 20, which fits into the second receiving groove 2022 on the left slide 202, has rounded corners to prevent interference when the left mold mounting base 203 deflects relative to the left slide 202.

[0044] The cross-sectional shape of the positioning groove is also semicircular, so as to match the arc surface of the semicircular shaft 21. The semicircular shaft 21 is vertically arranged, and its arc surface is close to the positioning groove.

[0045] See 8. Figure 9 The taper adjustment mechanism 205 is mainly composed of a first adjustment block 2053, a fixed plate 2051, a screw, a rotating rod, a commutator 2052, etc. The commutator 2052 is fixedly mounted on the fixed plate 2051, and the fixed plate 2051 is fixedly mounted on the left fixed seat 201 by bolts. The rotating rod and the screw are respectively connected to the input end and the output end of the commutator 2052, and the directions of the input end and the output end of the commutator 2052 are perpendicular to each other. The other end of the rotating rod is equipped with a turning handle 18, and the other end of the screw is connected to the first adjustment block 2053 in a transmission manner. By turning the turning handle 18, the rotating rod is driven to rotate, and then after the commutator 2052 is reversed, the screw is driven to rotate, and then the first adjustment block 2053 is driven to move back and forth.

[0046] The rotation of the rotating rod in the taper adjustment mechanism 205 is controlled manually. In other embodiments, the rotation of the rotating rod can also be controlled electrically by a motor.

[0047] A locking piece and a knob 17 are also provided on the side of the left fixed seat 201. The knob 17 is threadedly connected to the locking piece, and the screw connected to the input end of the commutator 2052 passes through the locking piece. When the angle of the first thread rolling plate 204 is adjusted, the knob 17 can be screwed, and the locking piece will hold the screw tightly to prevent it from rotating.

[0048] A groove is provided on one side of the left slide 202 near the left mold mounting seat 203, so that a larger gap is formed between the left slide 202 and the left mold mounting seat 203. The first adjustment block 2053 is a wedge-shaped block. The first adjustment block 2053 is inserted into the gap and contacts the groove plane. The side with the inclined surface on the first adjustment block 2053 contacts the semicircular shaft 21 plane. When the first adjustment block 2053 is gradually inserted deeper into the gap between the left slide 202 and the left mold mounting seat 203, it will drive the left mold mounting seat 203 and the first thread rolling plate 204 to deflect horizontally relative to the left slide 202 via the rotating shaft 19, and then adjust the angle of the first thread rolling plate 204. At this time, the left mold mounting seat 203 will also rotate relative to the semicircular shaft 21.

[0049] See also Figure 11 Two guide bars 27 are provided in the groove of the left sliding seat 202. The guide bars 27 extend along the sliding direction of the first adjusting block 2053. At the same time, two guide grooves (not shown in the figure) are provided on the first adjusting block 2053. The guide bars 27 are horizontally slidably connected to the guide grooves to provide guidance for the sliding of the first adjusting block 2053 and prevent the first adjusting block 2053 from deflecting.

[0050] See also Figure 10 Two through-holes (not marked in the figure) are provided on the left mold mounting base 203 and the left slide base 202. Long screws 2054 are installed in the through-holes. The through-hole on the left mold mounting base 203 has a countersunk hole. After the long screw 2054 passes through the through-holes on the left mold mounting base 203 and the left slide base 202, it is threadedly connected to the left fixed base 201. The head of the long screw 2054 retracts into the countersunk hole, and the shaft of the long screw 2054 has a clearance fit with the two through-holes to leave room for the deflection of the left mold mounting base 203. After the long screw 2054 is threadedly connected to the left fixed base 201, it will firmly secure the adjusted left mounting base to the left slide base 202, preventing the rotating shaft 19 from separating from the left slide base 202.

[0051] Two avoidance grooves are also provided at corresponding positions on the first adjusting block 2053 to make way for the long screw 2054 and will not interfere with the movement of the first adjusting block 2053 .

[0052] like Figure 10As shown, a mounting groove (not labeled in the figure) is provided on the left die mounting base 203 near the right thread rolling die 3. This mounting groove is located near the bottom of the left die mounting base 203. Two adjacent sides of this mounting groove have inner walls, while the other two sides are open. A die base 206 is mounted within the mounting groove and is typically secured thereto by bolts. A first thread rolling plate 204 is located on the die base 206. The top surface of the first thread rolling plate 204 is beveled to mate with the die base 206. A fixing block 22 is provided at the bottom of the left die mounting base 203. This fixing block 22 is bolted to the bottom of the left die mounting base 203 and also has a beveled bottom surface to mate with the bottom surface of the first thread rolling plate 204. When the bolts are tightened, the beveled surface of the fixing block 22 applies a compressive force to the bottom of the first thread rolling plate 204, pressing the first thread rolling plate 204 firmly against the die base 206.

[0053] Two side fixing blocks 23 and two top-pressure cylinders 26 are provided on the side of the left mold mounting base 203. The two top-pressure cylinders 26 correspond one-to-one to the two side fixing blocks 23. The top-pressure cylinders 26 are installed inside the left mold mounting base 203, with their output ends facing outward. A waist-shaped hole is provided in the center of each side fixing block 23. The waist-shaped hole extends horizontally, and a screw 24 is provided in the waist-shaped hole. The screw 24 is threadedly connected to the left mold mounting base 203. The screw 24 passes through the waist-shaped hole and is threadedly connected to the nut 25. One end of the side fixing block 23 contacts the side surface of the first thread rolling plate 204, and the other end contacts the output end of the top-pressure cylinder 26. The nut 25 acts as a fulcrum, applying outward pressure to one end of the side fixing block 23 via the pressure cylinder 26. Using the principle of leverage, the side fixing block 23, with the nut 25 as a fulcrum, has its other end (i.e., the end away from the pressure cylinder 26) pressed against the side of the first thread rolling plate 204, pressing it tightly. This ensures that all four sides of the first thread rolling plate 204 are fixed in place, ensuring that the installation position of the first thread rolling plate 204 does not shift during the thread rolling process. This leverage increases the pressure applied to the side of the first thread rolling plate 204.

[0054] The hydraulic locking force of the hydraulic cylinder is stable and continuous, so it will not loosen even under alternating stress. The teeth on the opposite sides of the two thread rolling plates will not change, and the size will not change. This is a stable prerequisite, and the changes in the locking force of the thread rolling plates can be monitored by monitoring the changes in the hydraulic pressure.

[0055] like Figure 12-14As shown, the right thread rolling die 3 primarily consists of a right fixed base 301, a right sliding base 302, a right die mounting base 303, a parallelism adjustment mechanism 305, a spacing adjustment mechanism 306, and a second thread rolling plate 304. The right fixed base 301 is connected to the corresponding slide rail on the platform 10 via a slider for vertical sliding movement. The right slide base 302 is bolted to the right fixed base 301 on the side facing away from the slide rail. The right die mounting base 303 is rotatable relative to the right slide base 302, and the second thread rolling plate 304 is mounted on the right die mounting base 303.

[0056] A third receiving slot 3021, a fourth receiving slot 3022, and a positioning slot are defined on opposite sides of the right slide 302 and right mold mounting seat 303. The third receiving slot 3021 is located on the same side of the right slide 302 and right mold mounting seat 303 and extends horizontally. The fourth receiving slot 3022 is located in the middle of the third receiving slot 3021 and divides it into two sections, front and back. The positioning slot is located on the other side of the right slide 302 and right mold mounting seat 303 (away from the third receiving slot 3021) and also extends horizontally.

[0057] The rotating shaft 19 and the rotating shaft positioning block 20 are located between the right slide base 302 and the right mold mounting base 303. The rotating shaft 19 is horizontally arranged, extending along the width of the second rolling plate 304 and respectively embedded in two third receiving grooves 3021. The third receiving grooves 3021 are also semicircular in cross-section, matching the outer curved surface of the rotating shaft 19. The ends of the rotating shaft positioning block 20 are respectively embedded in the two third receiving grooves 3021. The rotating shaft positioning block 20 has a circular hole in the center, through which the rotating shaft 19 passes.

[0058] The shaft positioning block 20 is secured to the right mold mounting base 303 with long bolts. The side of the shaft positioning block 20 is flat, resting against the sidewalls of the fourth receiving slot 3022 on the right mold mounting base 303. The other side of the shaft positioning block 20, which fits into the fourth receiving slot 3022 on the right slide base 302, has rounded corners to prevent interference when the right mold mounting base 303 deflects relative to the right slide base 302.

[0059] The cross-sectional shape of the positioning groove is also semicircular, so as to match the cambered surface of the semicircular shaft 21. The semicircular shaft 21 is horizontally arranged, and its cambered surface is close to the positioning groove.

[0060] See also Figure 13 、 Figure 14The parallelism adjustment mechanism 305 is located at the bottom of the right mold mounting base 303. The parallelism adjustment mechanism 305 is mainly composed of a second adjustment block 3051, a fixed plate 2051, a screw, a motor mounting base 803, a motor, etc. The commutator 2052 is fixedly mounted on the motor mounting base 803, and the motor mounting base 803 is fixed to the bottom of the support plate by bolts. The output end of the motor is connected to the input end of the commutator 2052, and the output end of the commutator 2052 is connected to the screw, and the directions of the input end and output end of the commutator 2052 are perpendicular to each other. The screw passes through the support plate and is connected to the second adjustment block 3051. After the motor is working, after the commutator 2052 reverses, it drives the screw to rotate, and then drives the second adjustment block 3051 to move up and down.

[0061] The screw in the parallelism adjustment mechanism 305 is electrically controlled to rotate. In other embodiments, the screw can also be manually controlled to rotate.

[0062] A groove is provided on the side of the right slide 302 near the right mold mounting seat 303, creating a larger gap between the right slide 302 and the right mold mounting seat 303. The groove is located on the lower side of the right slide 302. A second adjustment block 3051 is a wedge-shaped block that is inserted into the gap and makes planar contact with the groove. The inclined side of the second adjustment block 3051 makes planar contact with the semicircular shaft 21. As the second adjustment block 3051 gradually penetrates deeper into the gap between the right slide 302 and the right mold mounting seat 303, it drives the right mold mounting seat 303 and the second scrubbing plate 304 to deflect upward relative to the right slide 302 via the rotating shaft 19, thereby adjusting the upward swing angle of the second scrubbing plate 304, that is, adjusting the angle between the first scrubbing plate 204 and the second scrubbing plate 304 relative to the vertical plane. At this time, the right mold mounting seat 303 also rotates relative to the semicircular shaft 21.

[0063] Two guide bars 27 are provided in the groove of the right sliding seat 302, and the guide bars 27 extend along the sliding direction of the second adjustment block 3051. At the same time, correspondingly, two guide grooves (not shown in the figure) are opened on the second adjustment block 3051. The guide bars 27 are connected to the guide grooves for up and down sliding, providing guidance for the sliding of the second adjustment block 3051 and preventing the second adjustment block 3051 from deflecting.

[0064] The parallelism adjustment of the thread rolling plate adopts an independent servo CNC motor drive adjustment, which can realize the adjustment of the spacing size between the entry end and the exit end of the mold base, and can more digitally realize the adjustment of the thread rolling plate feed size, making it more convenient to adjust and control the product processing dimensions such as outer diameter and middle diameter.

[0065] like Figure 13As shown, the right mold mounting base 303 also has a mounting groove (not labeled in the figure) on one side near the left mold mounting base 203. This mounting groove is located near the upper side of the right mold mounting base 303 and is opposite to the mounting groove on the left mold mounting base 203. The mold base 206 is also mounted in this mounting groove. The specific installation method is the same as that on the left mold mounting base 203, so it will not be described in detail here.

[0066] The second thread rolling plate 304 is pressed and fixed on the die base 206. A fixed block 22, a side fixed block 23 and a top pressure cylinder 26 are also provided on the side of the right die mounting base 303. The specific installation method can be found in the above description of the left thread rolling die 2, which will not be described in detail here.

[0067] like Figure 14 As shown, the spacing adjustment mechanism 306 is mainly composed of a third adjustment block 3061, a screw, a motor mounting base 803, a commutator 2052, and a motor. The third adjustment block 3061 is also a wedge-shaped block, which is located between the right sliding base 302 and the right fixed base 301 and is matched with the right sliding base 302 in an inclined plane. The motor mounting base 803 is fixed to the bottom of the support plate by bolts, and the commutator 2052 is fixedly mounted on the motor mounting base 803. The output end of the motor is connected to the input end of the commutator 2052, and the output end of the commutator 2052 is connected to the screw. The directions of the input and output ends of the commutator 2052 are perpendicular to each other. The screw passes through the support plate and is transmission-connected to the third adjustment block 3061.

[0068] After the motor is reversed by the commutator 2052, it drives the screw to rotate, which in turn drives the third adjustment block 3061 to move up and down. The third adjustment block 3061 squeezes the right slide 302 through its inclined surface, causing the right slide 302 to slide horizontally along the slide rail on the support plate, thereby adjusting the spacing between the second thread rolling plate 304 and the first thread rolling plate 204. During the thread rolling process, a squeezing force is applied to the blank 34, forming threads on the surface of the blank 34. The spacing adjustment mechanism 306 also adjusts the depth of the threads formed on the surface of the blank 34.

[0069] A guide portion is formed on a protrusion on one side of the third adjustment block 3061 away from the inclined surface. The guide portion extends vertically, and a corresponding guide groove is formed on the right fixed seat 301. The guide portion and the guide groove are connected for up and down sliding, providing guidance for the up and down sliding of the third adjustment block 3061.

[0070] The spacing between the two rolling plates, i.e., the thread pitch diameter, is adjusted using a servo CNC motor. This structure reliably and digitally adjusts the spacing between the two rolling plates and has a self-locking function. Once the mold base is adjusted and locked, it will not deviate or misalign even under extreme pressure.

[0071] In the application of the present invention, the taper adjustment, parallelism adjustment and spacing adjustment of the thread rolling plate are all independent. Compared with the common traditional thread rolling machine die seat using bolts with / with countless display meters to adjust the spacing, parallelism and taper, CNC control can more conveniently and accurately achieve the required positioning adjustment without affecting each other, and has extremely high repeatability, which is convenient for future processing of similar products. The original stored processing parameters can be called up with one click, and the position of the die seat can be adjusted and locked by CNC, reducing the difficulty of machine adjustment.

[0072] See also Figure 13 、 Figure 14 A hydraulic cylinder (not shown) is installed within the right fixed base 301. Corresponding through-holes are provided on the right slide base 302 and the right mold mounting base 303, with a countersunk hole within the through-hole on the right mold mounting base 303. A vertically extending clearance hole is provided on the third adjustment block 3061 to provide clearance for the hydraulic cylinder's drive rod 28. The hydraulic cylinder's drive rod 28 passes through the third adjustment block 3061, the right slide base 302, and the right mold mounting base 303, and is connected to the nut 25. When the parallelism adjustment mechanism 305 completes the angle adjustment between the right mold mounting base 303 and the second thread rolling plate 304, the hydraulic cylinder's drive rod 28 retracts, and the nut 25 on the drive rod 28 retracts into the countersunk hole on the right mold mounting base 303. The drive rod 28 forms a clearance fit with the through-holes on the right mold mounting base 303 and the right slide base 302. The diameter of the nut 25 is larger than the diameter of the through-hole but smaller than the diameter of the countersunk hole. When the driving rod 28 of the oil cylinder retracts, the right mold mounting seat 303 will be tightened through the nut 25, so that the right mold mounting seat 303 is tightly held and fixed on the right sliding seat 302, and the nut 25 plays a role of limiting.

[0073] The opposite sides of the first thread rolling plate 204 and the second thread rolling plate 304 have several teeth that are adapted to the shape and helix angle of the processed thread. The teeth extend along the surfaces of the first thread rolling plate 204 and the second thread rolling plate 304. The teeth should protrude from the surfaces of the first thread rolling plate 204 and the second thread rolling plate 304 and are used for forming the threads on the blank 34.

[0074] The plurality of teeth on the first thread rolling plate 204 may correspond to the plurality of teeth on the second thread rolling plate 304 one by one, or may be arranged at intervals.

[0075] See also Figure 16The first and second rubbing plates 204, 304 are spaced a certain distance apart to form a processing space. A sloped area 3041 is provided on the upper and lower edges of the opposite sides of the first and second rubbing plates 204, 304. Initially, the first and second rubbing plates 204, 304 are displaced up and down. A certain angle is formed between the sloped area 3041 on the upper edge of the second rubbing plate 304 and the first rubbing plate 204. The blank 34 will be placed within this angle. The slope will support the blank 34 to prevent it from falling. At the same time, the slope helps guide the blank 34 into the processing space of the first and second rubbing plates 204, 304. When the first and second rubbing plates 204, 304 move synchronously up and down toward each other, the blank 34 will not be lifted upward by the top surface of the second rubbing plate 304.

[0076] like Figure 12 As shown, a downward pressing positioning mechanism 13 and an axial positioning mechanism 14 are further provided on the top of the right mold mounting seat 303 , which are used to press down the blank 34 and position the blank 34 in the axial direction respectively.

[0077] See also Figure 15 The downward positioning mechanism 13 mainly includes a bracket 131, a pressure plate 133, a downward pressure cylinder 132, a lifting screw 134, a clamping member 16, a knob 17, a turning handle 18 and other components. The lower end of the bracket 131 is fixed to the top of the right mold mounting base 303 by bolts. The downward pressure cylinder 132 is vertically arranged. The output end of the downward pressure cylinder 132 is connected to the pressure plate 133 to control the upward and downward movement of the pressure plate 133. The upper end of the downward pressure cylinder 132 is connected to a guide rod, which is connected to the upper end of the bracket 131 in an upward and downward manner. The lifting screw 134 passes through the upper end of the bracket 131 and is threadedly connected to the bracket 131. The lower end of the lifting screw 134 is rotatably connected to the upper end of the cylinder, and the upper end of the lifting screw 134 is connected to the turning handle 18. Manually turning the turning handle 18 drives the lifting screw 134 to rotate, thereby driving the downward pressure cylinder 132 to move up and down to adjust its height.

[0078] The clamping piece 16 is installed on the top of the bracket 131, and the knob 17 is threadedly connected to the clamping piece 16. The upper end of the lifting screw 134 passes through the clamping piece 16. After the height of the pressing cylinder 132 is adjusted, the clamping piece 16 clamps the lifting screw 134 by screwing the knob 17 to prevent the lifting screw 134 from rotating again.

[0079] The pressing plate 133 deflects to one side and then bends downward, extending into a Z-shape. The lower end surface of the pressing plate 133 is horizontal, ensuring that the blank 34 remains horizontal when pressed downward. During the thread rolling process, the downward pressure cylinder 132 controls the pressing plate 133 to extend into the processing space. The pressing plate 133 maintains a constant height and contacts the blank 34. As the first and second thread rolling plates 204, 304 move synchronously upward and downward toward each other, the height of the blank 34 remains constant, and the blank 34 itself rotates relative to the first and second thread rolling plates 204, 304.

[0080] See also Figure 12 The axial positioning mechanism 14 mainly includes a cylinder and a fixed-length positioning plate 141. The lower end of the fixed-length positioning plate 141 extends into the processing space between the first thread rolling plate 204 and the second thread rolling plate 304. The cylinder is horizontally arranged and fixed on the top of the right mold mounting seat 303. The output end of the cylinder is connected to the fixed-length positioning plate 141. The fixed-length positioning plate 141 is controlled by the cylinder to move horizontally along the spacing direction perpendicular to the first thread rolling plate 204 and the second thread rolling plate 304. The moving direction is consistent with the axial direction of the blank 34. By adjusting the axial position of the fixed-length positioning plate 141 relative to the blank 34, the length of the thread required to be processed on the rod of the blank 34 is adjusted. During the thread rolling process, the rod of the blank 34 will abut against the fixed-length positioning plate 141.

[0081] like Figure 2 、 Figure 3 As shown, a nitrogen load-balancing cylinder 30 is provided above the left sliding platform 202 and the right sliding platform 302, and the load-balancing cylinder 30 is filled with nitrogen. The load-balancing cylinder 30 is vertically arranged, and the lower ends of the telescopic rods of the two load-balancing cylinders 30 are respectively connected to the top of the left sliding platform 202 and the right sliding platform 302, and the upper ends of the load-balancing cylinders 30 are connected to the top of the fuselage 1. The two load-balancing cylinders 30 are used to balance the deadweight of the left thread-rolling die 2 and the right thread-rolling die 3. When the left thread-rolling die 2 and the right thread-rolling die 3 move synchronously up and down toward each other, the telescopic rods of the load-balancing cylinder 30 will automatically extend and retract, reducing the burden on the servo motor 801 in the servo drive mechanism 8.

[0082] like Figure 7 As shown, a cooling oil pipe 15 is installed above the left mold mount 203. The top surface of the left mold mount 203, near the processing space, has a slope. The outlet of the cooling oil pipe 15 extends onto this slope, and the inlet is connected to the source of cooling oil. During the thread rolling process, cooling oil sprayed from the cooling oil pipe 15 flows downward along the slope of the top of the left mold mount 203 into the processing space, falling onto the blank 34, cooling it and lubricating it.

[0083] During the thread rolling process, the first and second thread rolling plates 204 and 304 squeeze the blank 34, creating a significant reaction force on the left and right thread rolling dies 2 and 3. This reaction force acts on the body 1, causing the sides of the body 1 to tend to splay outward. The integrally cast upper edge of the body 1 is integrally connected, holding the left and right thread rolling dies 2 and 3 on both sides of the body 1. Simultaneously, a tie rod 29 provided on the back of the body 1 also holds the left and right sides of the body 1 in place. The ends of the tie rod 29 are fixedly connected to the inner walls of the mounting space on the body 1.

[0084] By strengthening the structure at the location in the middle of the closed fuselage where the lateral load is most concentrated, and adding pre-tightening rods 29, the weakest part of the U-shaped fuselage structure was strengthened, so that the entire main fuselage can achieve extremely strong structural rigidity. When the overall fuselage is subjected to a lateral force of 20 tons, the external expansion deformation is only at the micron level.

[0085] like Figure 2 As shown, a rotatable turntable 7 is provided on the front side of the fuselage 1 (i.e., the side away from the pull rod 29), and one side of the turntable 7 is horizontally rotatably connected to a rotation shaft seat 31 fixed on the front side of the fuselage 1 through a rotating shaft.

[0086] See also Figure 17 Two slide rails and a mounting plate 71 are installed on the turntable 7. The two slide rails extend perpendicular to the spacing between the left and right rolling dies 2 and 3. The bottom of the mounting plate 71 is horizontally connected to the two slide rails via a slider. The loading mechanism 4, feeding mechanism 5, and heating mechanism 6 are all mounted on the mounting plate 71. The positions of the loading mechanism 4, feeding mechanism 5, and heating mechanism 6 can be adjusted by sliding the mounting plate 71.

[0087] A centering adjustment mechanism 72 is located at the bottom of the mounting plate 71 on the turntable 7. This mechanism 72 consists of a screw, a turning handle 18, a screw seat, and two bearing seats. The two bearing seats are fixedly mounted on the turntable 7, corresponding to the left and right ends of the mounting plate 71. The screw is rotatably connected to the two bearing seats at each end. The turning handle 18 is fixedly mounted on one end of the screw, and the screw seat is fixed to the bottom of the mounting plate 71. The screw and the screw seat are threadedly connected. Turning the turning handle 18 rotates the screw, which in turn drives the mounting plate 71 to slide.

[0088] A digital caliper 73 is mounted on the front of the turntable 7. It consists of two parts: a scale module and a digital display module. The scale module is fixed to the front of the turntable 7, while the digital display module is connected to the bottom of the mounting plate 71 via a connector. As the mounting plate 71 slides horizontally, the digital display module reads the scale on the scale module, thereby determining the travel distance of the mounting plate 71.

[0089] See also Figure 17The feeding mechanism 4 mainly comprises a vibrating disc assembly 41, a distributing assembly 42 and a positioning assembly 43, wherein the distributing assembly 42 is connected with the discharging port of the vibrating disc assembly 41, and the positioning assembly 43 is located on the side of the distributing assembly 42 away from the vibrating disc assembly 41 and is connected with the discharging port of the distributing assembly 42.

[0090] The vibrating disc assembly 41 transmits the blank 34 to the distributing assembly 42 in a vibrating manner.

[0091] Referring to Figure 18 The distributing assembly 42 mainly comprises a support frame 421, a fixed support 424, a blanking slide plate 425, a distributing cylinder 426, a distributing plate 427, a first support plate 422, a second support plate 423, a first abutment plate 428 and a second abutment plate 429. The support frame 421 is vertically fixed on the mounting plate 71, the fixed support 424 is fixed on the top of the support frame 421, and the blanking slide plate 425 is fixed on the fixed support 131 in an inclined manner, and the inclined direction is from the side where the vibrating disc assembly 41 is located to the side where the positioning assembly 43 is located.

[0092] The first support plate 422 and the second support plate 423 are respectively fixed on the two sides of the support frame 421 (i.e. the two sides of the length direction of the blanking slide plate 425), the distributing cylinder 426 is located above the blanking slide plate 425 and is fixed on the second support plate 423 in an inclined manner, the distributing plate 427 is connected with the output end of the distributing cylinder 426, and the distributing plate 427 is close to the discharging port of the blanking slide plate 425. When the blank 34 comes out of the discharging port of the vibrating disc assembly 41, it will fall on the blanking slide plate 425 and roll down along the blanking slide plate 425, and the distributing cylinder 426 will control the distributing plate 427 to move downward to block the discharging port of the blanking slide plate 425 to prevent the blank 34 from rolling down.

[0093] The first abutment plate 428 and the second abutment plate 429 are both fixed on the first support plate 422 close to the side of the blanking slide plate 425, wherein the first abutment plate 428 is located directly above the second abutment plate 429 and is separated by a certain distance. The distance is slightly larger than the diameter of the rod part of the blank 34. A guide area for blanking of the blank 34 is formed by the first abutment plate 428, the second abutment plate 429 and the blanking slide plate 425. The head part of the blank 34 will fall into the side of the first abutment plate 428 away from the blanking slide plate 425, the rod part will pass through the gap between the first abutment plate 428 and the second abutment plate 429 and fall on the blanking slide plate 425, and the first abutment plate 428 and the second abutment plate 429 cooperate to limit the blank 34, and then the blank 34 will roll down along the blanking slide plate 425.

[0094] As Figure 19As shown, the positioning assembly 43 mainly includes a cylinder mounting frame 431, a lifting cylinder 432, a material retaining plate 435, a V-shaped seat 433, and a positioning slot plate 434. The cylinder mounting frame 431 is vertically fixed to the mounting plate 71. The lifting cylinder 432 is a slide cylinder, which is vertically fixed to the cylinder mounting frame 431. The V-shaped seat 433 is connected to the output end of the lifting cylinder 432 and has a V-shaped groove on the V-shaped seat 433 to accommodate the installation of the positioning slot plate 434. The positioning slot plate 434 has a V-shaped positioning groove in the middle for positioning the blank 34. The positioning groove is continuous from front to back. The positioning slot plate 434 is located directly below the blanking opening of the blanking slide plate 425. When the blank 34 on the blanking slide 425 closest to the blanking opening falls onto the positioning slot plate 434, the lifting cylinder 432 will control the dividing plate 427 to move downward, insert into the blanking opening of the blanking slide 425 to block the blank 34 on the blanking slide 425 and prevent it from continuing to roll downward.

[0095] The material blocking plate 435 is arranged on the side of the positioning slot plate 434 away from the unloading slide plate 425, and is used to block the blank 34 falling onto the positioning slot plate 434 to prevent the blank 34 from rolling out of the positioning slot plate 434.

[0096] like Figure 21 As shown, the feeding mechanism 5 is mainly composed of a bracket 131, a feeding cylinder 51 and a suction rod 52. The bracket 131 is fixed on the mounting plate 71. The feeding cylinder 51 serves as a pushing drive component for pushing the blank 34 into the processing space between the first thread rolling plate 204 and the second thread rolling plate 304. The feeding mechanism 5 is horizontally fixed on the bracket 131, and the output end of the feeding cylinder 51 is connected to the suction rod 52 to control the forward and backward movement of the suction rod 52. The moving direction of the suction rod 52 is perpendicular to the spacing direction between the first thread rolling plate 204 and the second thread rolling plate 304. By sliding the mounting plate 71, the centering position of the suction rod 52 between the first thread rolling plate 204 and the second thread rolling plate 304 can be adjusted.

[0097] The front end of the suction rod 52 has a suction port capable of generating negative pressure for sucking the blank 34. The suction rod 52 has an internal gas channel that is connected to a vacuum mechanism. The vacuum mechanism draws air outward, generating negative pressure at the suction port. The lifting cylinder 432 controls the vertical movement of the positioning slot plate 434 to adjust its height so that the blank 34 that falls onto the positioning slot plate 434 is at the same height as the suction rod 52. Depending on the diameter of the blank 34, the height of the positioning slot plate 434 will also vary, ensuring that the axial height of the blank 34 is consistent with the axial height of the suction rod 52.

[0098] After the blank 34 falls onto the positioning slot plate 434, the feeding cylinder 51 controls the suction rod 52 to move, and the suction rod 52 will approach the positioning slot plate 434 and attract the head of the blank 34 on the positioning slot plate 434 to suck the blank 34. Then the feeding cylinder 51 continues to control the suction rod 52 to move forward, and the suction rod 52 will push the blank 34 out of the positioning slot plate 434.

[0099] like Figure 20 As shown, the heating mechanism 6 is located on one side of the positioning assembly 43. The heating mechanism 6 comprises a base frame 61, a lifting platform 62, a heater 63, and a heating coil 64. The lifting platform 62 is fixed to the base frame 61 and utilizes a scissor-like lifting mechanism to control the elevation of the heater 63 and adjust the height of the heating coil 64. The heating coil 64 is connected to the heater 63 and induction heats the blank 34 through the heating coil 64.

[0100] The heating coil 64 has a through hole, the axis of which is horizontal and located in the same vertical plane as the axis of the suction rod 52. The blank is introduced into the through hole of the heating coil 64 and induction heated.

[0101] The height of the heating coil 64 is adjusted by the lifting platform 62 according to the diameter of the blank 34 .

[0102] An infrared thermometer (not shown in the figure) or a temperature sensor (not shown in the figure) is also provided next to the heating coil 64 to measure the temperature of the heated blank in the heating coil 64 and to feed back the temperature of the blank to the heating system in real time, thereby controlling the heating temperature of the blank.

[0103] The temperature control of the heating system in this embodiment is developed into a fully closed-loop digital control, which uses a high-precision, high-feedback-speed infrared thermometer to feed back the heating temperature to the host computer in a timely and effective manner. The host computer automatically determines the relationship between the measured feedback temperature and the set temperature. If the feedback temperature does not reach the set temperature, the heating system will remain in the heating state until the feedback temperature reaches the set temperature. Then, according to the corresponding settings, it will continue to perform insulation or complete the heating process. If insulation continues, the heating system will execute the insulation program for the set temperature based on the real-time feedback temperature, and firmly control the target measured temperature within the set temperature range. Compared with traditional heating furnaces or traditional heaters without feedback control, this solution has an obvious improvement in the control accuracy of the target heating temperature. Under certain conditions, the temperature control accuracy can be easily achieved by ±1°C. Whether it is for titanium alloys, high-temperature alloys or other materials, extremely high temperature control accuracy can be easily achieved to ensure batch consistency and stability.

[0104] See also Figure 21After the suction rod 52 sucks the blank 34, the feeding cylinder 51 pushes the blank 34 into the through hole of the heating coil 64, and the heating coil 64 heats the blank 34. When the blank 34 is heated to the specified temperature, the feeding cylinder 51 continues to push the blank 34 and pushes the blank 34 to the slope area 3041 on the upper edge of the second wire rolling plate 304. One side of the blank 34 rests against the first wire rolling plate 204. The slope area 3041 supports the blank 34 and guides the blank 34 into the processing space during wire rolling.

[0105] This feeding method has a simple structure, and the blank 34 is pushed to the heating coil 64 and the processing space in sequence by the feeding cylinder 51, without excessive turnover. The feeding speed is fast and the cost is low.

[0106] Because the existing warm wire rolling machine heating coil is installed in the middle of the linear feed track, it still needs to continue sliding on the track for a period of time after heating is completed. During this sliding process, the workpiece will experience a large temperature loss. At the same time, because the heating coil is arranged in a straight long strip, it cannot heat the circumference of the workpiece uniformly like a circular coil. Also, because the workpiece is in a state of constant movement during heating, the heating temperature of the workpiece cannot be effectively and reliably controlled. To address this problem, we arrange the heating coil 64 at the end of the linear feed track and use a circular coil to heat each individual blank 34 one by one. Although this may lead to a slight reduction in processing efficiency, it can achieve digital and effective control of the heating temperature of each product, ensuring the uniformity and consistency of the heating temperature of the blank 34.

[0107] like Figure 1 、 Figure 17 As shown, the turntable 7 can be tilted toward one side of the machine body 1 to facilitate maintenance and repair. A locking mechanism 9 is provided on the other side of the turntable 7 (i.e., away from the rotation axis) to lock the turntable 7 and the machine body 1 together to prevent displacement during loading and feeding, which could affect feeding accuracy.

[0108] See also Figure 22 The locking mechanism 9 consists of a first fixing member 91, a second fixing member 92, and a third fixing member 93. The first fixing member 91 is vertically arranged, with its upper end bolted to the turntable 7 and its lower end connected to the second fixing member 92 via bolts. The second fixing member 92 is horizontally arranged. One side of the third fixing member 93 is bolted to the fuselage 1. The bolt hole in the third fixing member 93 is a waist-shaped hole that extends vertically to facilitate height adjustment of the third fixing member 93.

[0109] The bottom of the second fixing member 92 protrudes downward to form a stop portion 921, and the lower side of the third fixing member 93 protrudes horizontally outward to form a connecting portion 931, so that when the second fixing member 92 is overlapped on the connecting portion 931 of the third fixing member 93, the connecting portion 931 will abut against the stop portion 921 to serve as a stop.

[0110] The upper surface of the connecting portion 931 has an inclined surface. When the turntable 7 is rotated and moved to the working position, the second fixing member 92 slides along the inclined surface of the connecting portion 931 of the third fixing member 93. At the same time, one end of the second fixing member 92 overlaps the connecting portion 931 of the third fixing member 93, thereby tightening the second fixing member 92 and the third fixing member 93. The upper surface of the connecting portion 931 is slightly higher than the bottom surface of the second fixing member 92 to pre-tighten the second fixing member 92 and prevent a gap between the second fixing member 92 and the third fixing member 93 to prevent them from moving up and down. The second fixing member 92 and the third fixing member 93 can then be fixed with bolts.

[0111] When the turntable 7 needs to be shifted, it is only necessary to remove the bolts at the connection between the second fixing member 92 and the third fixing member 93, and then the turntable 7 can be rotated and shifted.

[0112] The thread rolling machine's slide system utilizes a vertical layout design. During processing, the two beds 10 move vertically up and down, so the automated feeding system employs a horizontal discharge design. A servo electric cylinder pushes the blank 34 horizontally into the heating coil 64. After heating, it is then pushed into the processing area for subsequent clamping. After the product is finished rolling, it falls under its own gravity into a sorting device below the slide. Based on the feedback signal from the pressure process measurement sensor installed in the die base and the judgment of the CNC system, the sorting device completes the screening of qualified and unqualified products.

[0113] like Figure 3 As shown, a certain space is left below the two beds 10 to prevent the return oil groove 11 from dripping downwards into the return oil groove 11 to collect the cooling oil.

[0114] like Figure 1 、 Figure 23 and Figure 24 As shown, a material distribution mechanism 12 is further provided below the processing space formed between the first and second rolling plates 204 and 304. This distribution mechanism 12 includes a distribution hopper 121 with two discharge ports, a distribution baffle 123 that guides qualified and unqualified products into the two discharge ports, and a rotary cylinder 122 that controls the rotation of the distribution baffle 123. The space within the distribution hopper 121 has two upper and lower levels, separated by a partition 1211 in the middle. The partition 1211 is tilted and extends to the location of the two discharge ports.

[0115] The partition 1211 is covered with a number of small holes. The processed bolts are covered with a certain amount of cooling oil. When the bolts fall onto the partition 1211, the cooling oil will fall into the space below the partition 1211 and be collected. The rotary cylinder 122 controls the rotation of the material separation baffle 123, guiding qualified and unqualified products into two discharge ports respectively, to screen the bolts.

[0116] The bottom of the distribution hopper 121 is provided with a pipe 124 for discharging the cooling oil collected in the distribution hopper 121 .

[0117] A stress sensor (not shown) is installed in the left or right rolling die 2, 3. This sensor detects the magnitude of the rolling force applied to the billet 34 during extrusion and rolling. If the rolling force applied to a billet 34 exceeds the set value, it indicates that billets 34 of different diameters may have been mixed in, meaning the billet 34 is unqualified. Otherwise, the billet 34 is qualified. The first and second rolling plates 204, 304 then release the billet 34, causing it to fall directly downward into the distribution hopper 121.

[0118] See also Figure 17 A receiving oil tank 32 is located at the bottom of the turntable 7 and is secured to the bottom of the turntable 7 via connectors. Two material boxes 33 are placed within the receiving oil tank 32. These two boxes 33 correspond to the two outlets of the distribution hopper 121 and are used to collect qualified and unqualified products, respectively. The bottom of the boxes 33 has several small holes, allowing any residual cooling oil on the bolt surface to pass through and fall into the receiving oil tank 32.

[0119] When the material box 33 is filled with materials, the connection between the turntable 7 and the body 1 is unlocked and the turntable 7 is rotated to one side so that the material box 33 can be replaced quickly and conveniently.

[0120] A control cabinet and CNC screen (not shown) are also located on the outside of the machine body to facilitate digital control of the thread rolling machine. The CNC system enables micron-level precision control of the spacing and parallelism between the left and right beds and the rolling plates, as well as the position of each moving component. It can also connect to the heater and automation system, integrating all components into the CNC system for centralized control and data transmission processing, improving feedback and response time and enhancing control stability. At the same time, due to the high degree of integration of the CNC system, each bed, rolling plate, and other operating components can be monitored and fed back within the CNC system, enabling online monitoring of the entire machining process.

[0121] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A thread rolling machine that facilitates digital adjustment of thread rolling parameters, characterized in that: include: A left thread rolling die (2) and a right thread rolling die (3), wherein the left thread rolling die (2) and the right thread rolling die (3) are arranged relative to each other and can move synchronously upward and downward toward each other; The left thread rolling die (2) comprises a left sliding seat (202), a left die mounting seat (203) deflected around a vertical axis on one side of the left sliding seat (202), a first thread rolling plate (204) mounted on the left die mounting seat (203), and a taper adjustment mechanism (205) for controlling the deflection of the left die mounting seat (203); The taper adjustment mechanism (205) comprises a first adjustment block (2053), which can be horizontally inserted into the gap between the left sliding platform (202) and the left mold mounting seat (203) to control the horizontal deflection of the left mold mounting seat (203) relative to one side of the left sliding platform (202); The right thread rolling die (3) comprises a slidable right sliding platform (302), a right die mounting base (303) deflected around a horizontal axis on one side of the right sliding platform (302), a second thread rolling plate (304) mounted on the right die mounting base (303), a spacing adjustment mechanism (306) for controlling the right sliding platform (302) to approach or move away from the left thread rolling die (2), and a parallelism adjustment mechanism (305) for controlling the deflection of the right die mounting base (303); The parallelism adjustment mechanism (305) includes a second adjustment block (3051), which can be vertically inserted into the gap between the right sliding platform (302) and the right mold mounting seat (303) to control the right mold mounting seat (303) to deflect upward relative to the right sliding platform (302); The first thread rolling plate (204) and the second thread rolling plate (304) are respectively fixed on the opposite sides of the left mold mounting seat (203) and the right mold mounting seat (303), and the opposite surfaces of the first thread rolling plate (204) and the second thread rolling plate (304) have a plurality of teeth adapted to the shape and helix angle of the processed thread, and the teeth extend along the surface of the first thread rolling plate (204) and the second thread rolling plate (304).

2. The thread rolling machine that facilitates digital adjustment of thread rolling parameters according to claim 1, characterized in that: The second thread rolling plate (304) is provided with at least one sloped area (3041) on one side having the tooth body. The sloped area (3041) is arranged on the upper edge of the second thread rolling plate (304) and is used to support the blank (34) and guide the blank (34) into the processing space formed between the first thread rolling plate (204) and the second thread rolling plate (304).

3. The thread rolling machine that facilitates digital adjustment of thread rolling parameters according to claim 1, characterized in that: The left thread rolling die (2) further comprises a left fixed seat (201) capable of being lifted up and down, the left sliding seat (202) being mounted on the side of the left fixed seat (201), a rotating shaft (19) and a rotating shaft positioning block (20) being provided between the left sliding seat (202) and the left die mounting seat (203), a first receiving groove (2021) and a second receiving groove (2022) being provided on opposite sides of the left sliding seat (202) and the left die mounting seat (203), the rotating shaft positioning block (20) being provided in the first receiving groove (202 1), the rotating shaft (19) is vertically arranged in the second receiving groove (2022) and is rotatably connected to the rotating shaft positioning block (20), and the left mold mounting seat (203) is provided with a screw for clamping and fixing the left mold mounting seat (203) on the left sliding seat (202), and the screw passes through the left mold mounting seat (203) and the left sliding seat (202) in sequence, and is threadedly connected to the left fixed seat (201), and the screw is clearance-matched with the through holes on the left mold mounting seat (203) and the left sliding seat (202).

4. The thread rolling machine that facilitates digital adjustment of thread rolling parameters according to claim 3, characterized in that: A semicircular shaft (21) is further provided between the left mold mounting seat (203) and the first adjustment block (205); a positioning groove matching the arc surface of the semicircular shaft (21) is provided on the side of the left mold mounting seat (203) close to the left slide seat (202); the semicircular shaft (21) is vertically provided in the positioning groove; and a side having an inclined surface on the first adjustment block (2053) is closely attached to a side having a flat surface on the semicircular shaft (21).

5. The thread rolling machine that facilitates digital adjustment of thread rolling parameters according to claim 4, characterized in that: The left sliding seat (202) has a groove on one side close to the left mold mounting seat (203), and the first adjustment block (2053) can be horizontally inserted into the groove. A guide bar (27) is provided on the side wall of the groove, and the extension direction of the guide bar (27) is consistent with the sliding direction of the first adjustment block (2053). The first adjustment block (2053) is provided with a guide groove that matches the guide bar (27).

6. The thread rolling machine that facilitates digital adjustment of thread rolling parameters according to claim 1, characterized in that: The right thread rolling die (3) further comprises a right fixed seat (301), a support plate (307) is provided at the bottom of the right fixed seat (301), the right sliding seat (302) is horizontally slidably connected to the support plate (307), a rotating shaft (19) and a rotating shaft positioning block (20) are provided between the right sliding seat (302) and the right die mounting seat (303), a third accommodating groove (3021) and a fourth accommodating groove (3022) are provided on opposite sides of the right sliding seat (302) and the right die mounting seat (303), the rotating shaft positioning block (20) is provided in the third accommodating groove (3021), the rotating shaft ( 19) is horizontally arranged in the fourth accommodating groove (3022) and is rotatably connected to the rotating shaft positioning block (20). An oil cylinder is arranged in the right fixed seat (301), and a driving rod (28) of the oil cylinder is provided with a limiting member. The driving rod (28) of the oil cylinder passes through the right sliding seat (302) and the right mold mounting seat (303) in sequence and is connected to the limiting member. The driving rod (28) of the oil cylinder can tighten and fix the right mold mounting seat (303) on the right sliding seat (302). The driving rod (28) of the oil cylinder is clearance-matched with the through holes on the right sliding seat (302) and the right mold mounting seat (303).

7. The thread rolling machine for facilitating digital adjustment of thread rolling parameters according to claim 6, characterized in that: The spacing adjustment mechanism (306) includes a third adjustment block (3061) that can move up and down. The third adjustment block (3061) is located between the right sliding seat (302) and the right fixed seat (301), and is in an inclined plane fit with the right sliding seat (302). The third adjustment block (3061) has an avoidance hole for the driving rod (28) of the oil cylinder to pass through, and the avoidance hole extends along the sliding direction of the third adjustment block (3061).

8. The thread rolling machine for facilitating digital adjustment of thread rolling parameters according to claim 7, characterized in that: A guide portion is formed on a protrusion on one side of the third adjustment block (3061) away from the right sliding seat (302), and the extension direction of the guide portion is consistent with the sliding direction of the third adjustment block (3061). A guide groove that cooperates with the guide portion is provided on the right fixed seat (301).

9. The thread rolling machine for facilitating digital adjustment of thread rolling parameters according to claim 1, characterized in that: The top of the right mold mounting seat (303) is provided with a downward pressing positioning mechanism (13) and an axial positioning mechanism (14), the downward pressing mechanism includes a lifting and lowering pressure plate (133), the lower end of the pressure plate (133) can extend into the processing space between the first thread rolling plate (204) and the second thread rolling plate (304), the bottom surface of the pressure plate (133) is a horizontal surface, and the axial positioning mechanism (14) includes a fixed-length positioning plate (141) that can move along the spacing direction perpendicular to the first thread rolling plate (204) and the second thread rolling plate (304).

10. The thread rolling machine for facilitating digital adjustment of thread rolling parameters according to claim 9, characterized in that: The downward pressing positioning mechanism (13) further comprises a bracket (131), a downward pressing cylinder (132) connected to the bracket (131) by sliding up and down through a guide rod, a lifting screw (134) threadedly connected to the bracket (131), a clamping member (16) arranged on the bracket (131), and a knob (17) threadedly connected to the clamping member (16), wherein the lower end of the lifting screw (134) is connected to the downward pressing cylinder (132), and the upper end passes through the bracket (131) and is connected to the turning handle (18), and the knob (17) can control the clamping member (16) to clamp or loosen the lifting screw (134), and the pressing plate (133) is connected to the output end of the downward pressing cylinder (132).

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