CN109332453B

CN109332453B - Single-side torsion forming equipment for rectangular torsion waveguide tube

Info

Publication number: CN109332453B
Application number: CN201811276088.4A
Authority: CN
Inventors: 张峰; 周井磊
Original assignee: Nanjing Jikai Microwave Technology Co ltd
Current assignee: Nanjing Jikai Microwave Technology Co ltd
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2023-12-19
Anticipated expiration: 2038-10-30
Also published as: CN109332453A

Abstract

The invention discloses single-side torsion forming equipment of a rectangular torsion waveguide tube, wherein a servo motor is in transmission connection with a left clamping assembly through a left transmission assembly, and is used for twisting from one end of the rectangular waveguide tube, the left transmission assembly is arranged above a base of a workbench through a left box body, the right clamping assembly is in sliding connection with a right sliding assembly through a right box body, and the right sliding assembly is arranged on the base of the workbench; because the servo motor is adopted to twist one end of the rectangular waveguide tube, the instability during manual twisting is overcome by controlling the rotating speed and angle of the servo motor, the change amplitude of the internal stress of the material during deformation is greatly reduced, the deformation of the local tube wall of the rectangular waveguide tube is obviously reduced, the product quality is well ensured, the processing precision is high, the production cost is low, the operation is simple, the production efficiency is high, and the method is more suitable for the automatic and batch production of the rectangular waveguide tube.

Description

Single-side torsion forming equipment for rectangular torsion waveguide tube

Technical Field

The invention relates to the field of production equipment for manufacturing rectangular twisted waveguides, in particular to single-side twisting forming equipment for rectangular twisted waveguides.

Background

The waveguide is a functional part of a microwave circuit manufactured by using a hollow metal tube or a hollow cavity body and the like, and has the function of transmitting signals or power. The twisted waveguide is also called a waveguide twisted joint, is a waveguide with the wide side and the narrow side at two ends of which the directions are exchanged by 90 degrees, and is characterized in that the polarization direction can be changed by 90 degrees, and the propagation direction can not be changed; when connecting waveguides, when the wide side and the narrow side of the front section waveguide and the rear section waveguide are opposite, a twisted waveguide is needed to be inserted for transition; the length of the twisted waveguide should be an integer multiple of λg/2, and the shortest must not be less than 2λg (λg is the waveguide wavelength); is widely used in the radar field because of its small loss of transmitted electromagnetic waves.

The twisted waveguide is generally composed of a rectangular twisted waveguide and flanges connecting both ends thereof, as shown in fig. 1, fig. 1 is an enlarged perspective view of a rectangular twisted waveguide of the prior art, and the rectangular twisted waveguide 900 is a straight hollow metal square tube having a rectangular cross section before it is formed, and after it is twisted, the rectangular long sides of one end 910 of the rectangular twisted waveguide 900 and the rectangular long sides of the same side as the other end 920 thereof become spatially perpendicular to each other.

At present, the traditional production method for manufacturing the rectangular twisted waveguide tube is to mechanically twist or weld the rectangular twisted waveguide tube by a purely manual mode; the traditional welding forming has the defects of high design difficulty, complex working procedure, large deformation and the like; the traditional pure manual torsion molding usually needs to fill auxiliary materials such as rubber, spring steel sheets and the like into the inner space of the rectangular torsion waveguide tube before torsion, then fix one end of the rectangular torsion waveguide tube, and then carry out pure manual torsion on the other end around the axial direction of the rectangular torsion waveguide tube, so that the production efficiency is very low.

In addition, the traditional pure manual torsion forming method has the defects of difficult operation and cleaning, high processing difficulty, high production cost and the like, and the dimensional accuracy and the surface quality of the inner cavity of the torsion waveguide tube are difficult to ensure; meanwhile, in the process of manually twisting, the twisting speed is different from person to person, the twisting speed is faster and slower, the material is difficult to control, the fluctuation of internal stress of the material due to deformation is large, the material is difficult to stably conduct from a twisting end to a fixed end, the local internal stress concentration is easier to cause, and the local deformation of the pipe wall of the rectangular twisted waveguide tube is further caused.

Accordingly, there is a need for improvement and development in the art.

Disclosure of Invention

In order to solve the technical problems, the invention provides a single-side torsion forming device for a rectangular torsion waveguide tube, which can obviously reduce deformation of partial tube walls of the rectangular torsion waveguide tube and has high production efficiency.

The technical scheme of the invention is as follows: a single-side torsion forming device of a rectangular torsion waveguide tube comprises a servo motor, a left transmission assembly, a left clamping assembly, a left box body, a right clamping assembly, a right box body and a right sliding assembly; the servo motor is in transmission connection with the left clamping assembly through the left transmission assembly and is used for twisting one end of the rectangular waveguide tube, the left transmission assembly is arranged above the base of the workbench through the left box body, the right clamping assembly is in sliding connection with the right sliding assembly through the right box body, and the right sliding assembly is arranged on the base of the workbench; and, in addition, the method comprises the steps of,

the left side clamping assembly comprises a first elastic chuck, a first main shaft, a left swinging rod fixing block, a first tensioning rod, a first conical sliding disc, a first movable claw assembly, a first movable claw bracket and a first supporting baffle disc; wherein:

the first elastic chuck is in threaded connection with the right external thread of the first tensioning rod, two key blocks are symmetrically arranged on the outer wall of the threaded end of the first elastic chuck, and key grooves which are adapted to be clamped into the two key blocks are correspondingly arranged on the inner hole wall of the flange end of the first main shaft;

The left swing rod is formed by connecting a shifting fork part and a handle rod part, the shifting fork part is U-shaped, and two inner side walls of the head part of the shifting fork part are respectively provided with a convex shifting block; one end of the handle rod part connected with the shifting fork part is hinged on the top surface of one end of the left swing rod fixing block; the left swing rod fixing block is fixed on the front side wall of the right box body; the first tensioning rod penetrates into the first main shaft and can move back and forth along the axial direction of the first tensioning rod;

the first conical slide disc is sleeved at the left rear part of the first tensioning rod and can slide back and forth along the axial direction of the first tensioning rod; the part of the first conical slide plate, which is close to the inner side, is a cylindrical section, a circle of shifting block grooves which are matched with two shifting blocks on the left swinging rod in a clamping way are formed in the outer wall of the cylindrical section, the part of the first conical slide plate, which is close to the outer side, is a conical table section, and the outer diameter of the conical table section at the joint of the conical table section and the cylindrical section is larger;

the first movable claw assembly consists of a plurality of movable claws, the front half part of each movable claw is in an inward arc shape, the front end of each movable claw is used for propping against the first conical sliding plate, and the rear half part of each movable claw is provided with a pin shaft hole for being hinged on the first movable claw bracket; the first movable claw support is sleeve-shaped, an inner hole wall of the first movable claw support is provided with an inner thread for being screwed into an outer thread at the left end of the first tension rod, two sides of the first movable claw support are respectively fixed by a retaining ring with threads, a plurality of movable claw clamping grooves are uniformly distributed on the outer wall of the first movable claw support, and the rear half parts of the movable claws are hinged in the movable claw clamping grooves through pin shafts;

The first supporting baffle disc is disc-shaped, an inner thread is arranged on the inner hole wall of the first supporting baffle disc and is used for being screwed into an outer thread at the left end of the first tensioning rod, and the first supporting baffle disc is positioned at the outer side of the first movable claw support and is fixed by a retainer ring with threads; the end face of the first supporting baffle disc, which is close to the inner side, is a conical table surface, and the taper of the conical table surface is larger than that of the conical section of the first conical sliding disc; after assembly, the rear ends of all the movable claws are propped against the conical table surface of the first supporting baffle disc.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the clamping end of the first main shaft is integrally connected with a first main shaft flange part, the two sides of the right side wall of the left box body at the main shaft hole of the left box body are respectively provided with different step holes, the two outer step holes are respectively used for being filled with a plane bearing and the first main shaft flange part from inside to outside, the step holes on the inner side are only used for being filled with a thrust cylindrical roller bearing, and the step holes are screwed into external threads on the right side of the first main shaft for tightening through a first main shaft right locking sleeve with threads; the method comprises the steps of,

the main body of the first main shaft is cylindrical; the section of the first elastic chuck connected with the first tensioning rod is a straight cylinder section and is provided with an internal thread matched with the external thread at the right end of the first tensioning rod; the other section of the first elastic chuck is a conical bench section integrally, and the diameter of the joint of the conical bench section and the straight cylinder section is smaller than that of the outer end surface; two mutually perpendicular equal-width forked grooves are axially arranged on the outer end surface of the conical table section, and the conical table section is equally divided into four petals with root parts connected; a square hole for inserting the rectangular waveguide tube is also formed in the center of the outer end surface of the cone frustum; the inner hole section of the flange end of the first main shaft is an inner conical surface matched with the outer conical surface of the conical table section of the first elastic chuck.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the left transmission assembly comprises a servo motor belt wheel, a synchronous belt and a first main shaft belt wheel, wherein the servo motor belt wheel is sleeved on a shaft shoulder of a servo motor rotating shaft and is fixed through a servo motor belt wheel end cover, the first main shaft belt wheel is sleeved on the first main shaft and is fixed through a first main shaft belt wheel end cover and is positioned on the left outer side of the left box body, and the synchronous belt is sleeved on the servo motor belt wheel and the first main shaft belt wheel and is used for driving the first main shaft to synchronously rotate under the driving of the servo motor; wherein:

the three elastic locking steel rings are sleeved between the servo motor belt wheel and the servo motor rotating shaft side by side along the axial direction, the two side surfaces of the elastic locking steel ring clamped in the middle are inward inclined surfaces, the inner side surfaces of the elastic locking steel rings positioned on the two sides are outward inclined surfaces, and the total width of the three elastic locking steel rings is larger than the thickness of the inner hole of the servo motor belt wheel under the condition that the three elastic locking steel rings are contacted and are not subjected to external force.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: three elastic locking steel rings are sleeved between the first main shaft belt wheel and the first main shaft side by side along the axial direction, two side surfaces of the elastic locking steel ring clamped in the middle are inward inclined surfaces, the inner side surfaces of the elastic locking steel rings positioned at the two sides are outward inclined surfaces, and the total width of the three elastic locking steel rings is larger than the thickness of the inner hole of the first main shaft belt wheel under the condition that the three elastic locking steel rings are contacted and not subjected to external force; the method comprises the steps of,

The hole shoulder of the inner side end face of the first main shaft belt wheel extends to the inner side of the left box body, penetrates through a first flange fixed on the left end face of the left box body and is propped against the plane bearing end face of the left side of the left box body, the first flange is fixed in a counter bore of the left outer side face of the left box body through bolts, the plane bearing is fixed at the left end of the first main shaft through a first flange positioned at two sides of the plane bearing and a first main shaft left locking sleeve with threads, and a thrust cylindrical roller bearing is further arranged between the plane bearing and the first main shaft left locking sleeve at intervals and is matched with the first main shaft left locking sleeve through the first flange to be screwed into an external thread on the left side of the first main shaft for fastening.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the right side clamping assembly comprises a second elastic chuck, a second main shaft, a right swinging rod fixing block, a second tensioning rod, a second conical sliding disc, a second movable claw assembly, a second movable claw bracket and a second supporting baffle disc; wherein:

the second elastic chuck is in threaded connection with the left end external thread of the second tensioning rod, two key blocks are symmetrically arranged on the outer wall of the threaded end of the second elastic chuck, and key grooves which are adapted to be clamped into the two key blocks are correspondingly arranged on the inner hole wall of the flange end of the second main shaft;

The right swing rod is formed by connecting a shifting fork part and a handle rod part, the shifting fork part is U-shaped, and two inner side walls of the head part of the shifting fork part are respectively provided with a convex shifting block; one end of the handle rod part connected with the shifting fork part is hinged on the top surface of the right swing rod fixing block; the right swing rod fixing block is fixed on the front side wall of the right box body; the second tensioning rod penetrates into the second main shaft and can move back and forth along the axial direction of the second tensioning rod;

the second conical slide disc is sleeved at the right rear part of the second tensioning rod and can slide back and forth along the axial direction of the second tensioning rod; the part of the second conical sliding disc, which is close to the inner side, is a cylindrical section, a circle of shifting block grooves which are matched with two shifting blocks on the right swinging rod in a clamping way are formed in the outer wall of the cylindrical section, the part of the second conical sliding disc, which is close to the outer side, is a conical table section, and the outer diameter of the conical table section at the joint of the conical table section and the cylindrical section is larger;

the second movable claw assembly consists of a plurality of movable claws, the front half part of each movable claw is in an inward arc shape, the front end of each movable claw is used for propping against the second conical sliding plate, and the rear half part of each movable claw is provided with a pin shaft hole for being hinged on the second movable claw bracket; the second movable claw support is sleeve-shaped, an inner hole wall of the second movable claw support is provided with an inner thread for being screwed into an outer thread at the right end of the second tension rod, two sides of the second movable claw support are respectively fixed by a retaining ring with threads, a plurality of movable claw clamping grooves are uniformly distributed on the outer wall of the second movable claw support, and the rear half parts of the movable claws are hinged in the movable claw clamping grooves through pin shafts;

The second supporting baffle disc is disc-shaped, an inner thread is arranged on the inner hole wall of the second supporting baffle disc and is used for being screwed into an outer thread at the right end of the second tensioning rod, and the second supporting baffle disc is positioned at the outer side of the second movable claw support and is fixed by a retainer ring with threads; the end surface of the second supporting baffle disc, which is close to the inner side, is a conical table surface, and the taper of the conical table surface is larger than that of the conical section of the second conical sliding disc; after assembly, the rear ends of all the movable claws are propped against the conical table surface of the second supporting baffle disc.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the second main shaft is transversely positioned in a main shaft hole of the right box body and is coaxial with the first main shaft in the left box body; at the left side wall of the right box body, a second spindle left locking sleeve with threads is screwed, and a second spindle flange part embedded in the left outer side wall of the right box body is matched, so that a thrust cylindrical roller bearing embedded in the left inner side wall of the right box body and a plane bearing embedded in the left outer side wall of the right box body are tightened; and the right side wall of the right box body is tightly sleeved with a second main shaft right locking sleeve with threads by screwing, and the second flange embedded in the right outer side wall of the right box body is matched with the second flange to tighten the thrust cylindrical roller bearing embedded in the right inner side wall of the right box body and the plane bearing embedded in the right outer side wall of the right box body.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: and the second main shaft is fixed on the left side wall of the right box body through bolts and positioning pins at the flange end of the second main shaft.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the right side sliding assembly comprises two sliding rails, two sliding blocks, a nut, a screw rod and a hand wheel; the two sliding rails are transversely and symmetrically fixed on the base of the workbench through bolts, the two sliding blocks are transversely and symmetrically fixed on the lower parts of the front and rear sides of the right box body through bolts, and the sliding blocks are clamped in the corresponding sliding rails and can slide back and forth; the screw is fixed on the bottom surface of the right box body through a screw fixing seat; a screw rod fixing plate is fixed on the right side surface of the base of the workbench and is used for being connected with the right side of the screw rod through a corresponding fixing piece; the left end of the screw rod passes through the screw rod in a rotating way and is connected with the base through a corresponding fixing piece, the hand wheel is connected to the right end of the screw rod and is provided with a handle, and the hand wheel is used for driving the screw rod to rotate by manually rotating the hand wheel, so that the right box body and the right side clamping assembly on the right box body move back and forth along with the screw rod between the two sliding rails.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the sliding rail is characterized in that a sliding rail through groove is formed in the inner side wall of the sliding rail along the length direction of the sliding rail through groove, convex V-shaped tables are arranged in the middle of the upper surface and the lower surface of the sliding rail through groove along the length direction of the sliding rail through groove, concave V-shaped through grooves are formed in the middle of the upper surface and the lower surface of the sliding block along the length direction of the sliding block, and the V-shaped tables and the V-shaped through grooves are mutually matched in shape and size.

The single-side torsion forming device of the rectangular torsion waveguide tube comprises: the rectangular waveguide tube is internally provided with a polytetrafluoroethylene strip as a filling material during torsion, the polytetrafluoroethylene strip is matched with the shape of the inner cavity of the rectangular waveguide tube in shape, the assembly gap between the polytetrafluoroethylene strip and the rectangular waveguide tube after the polytetrafluoroethylene strip is plugged in is not more than 0.02mm, and the length of the polytetrafluoroethylene strip is the same as that of the rectangular waveguide tube.

According to the single-side torsion forming equipment for the rectangular torsion waveguide, provided by the invention, as the servo motor is adopted at one end of the rectangular waveguide to twist, the instability in manual torsion is overcome by controlling the rotating speed and angle of the servo motor, the change amplitude of internal stress of a material in deformation is greatly reduced, the deformation of the local pipe wall of the rectangular torsion waveguide is obviously reduced, the product quality is better ensured, the processing precision is high, the production cost is low, the operation is simple, the production efficiency is high, and the single-side torsion forming equipment is more suitable for the automatic and batch production of the rectangular torsion waveguide.

Drawings

FIG. 1 is an enlarged perspective view of a prior art rectangular twisted waveguide;

FIG. 2 is a perspective view of an embodiment of a rectangular twist waveguide single-sided twist forming apparatus of the present invention;

FIG. 3 is an enlarged perspective view of the components of FIG. 2 positioned on the table base;

FIG. 4 is a horizontal axis cut-away enlarged view of the left hand drive assembly of FIG. 3;

FIG. 5 is an enlarged view at section A of FIG. 4;

FIG. 6 is an enlarged view at a portion B in FIG. 4;

FIG. 7 is an enlarged view at part C in FIG. 4;

FIG. 8 is an enlarged perspective view of the left and right clamp assemblies of FIG. 3;

FIG. 9 is an enlarged perspective view of the right hand clamp assembly of FIG. 8;

FIG. 10 is an exploded view of FIG. 9;

FIG. 11 is an enlarged vertical axis cut-away view of the right clamp assembly of FIG. 3 at the right housing;

FIG. 12 is an enlarged vertical cross-sectional view of the right slide assembly of FIG. 3 at the right housing;

fig. 13 is an enlarged view at a portion D in fig. 12.

Description of the embodiments

The following detailed description and examples of the invention are presented in conjunction with the drawings, and the described examples are intended to illustrate the invention and not to limit the invention to the specific embodiments.

As shown in fig. 2, fig. 2 is a perspective view of an embodiment of the rectangular twisted waveguide single-side twisting forming device of the present invention, where the single-side twisting forming device is composed of a workbench 700 and a main cabinet 800, and the main cabinet 800 is internally provided with a main board, a control board and a power board, where the power board is used to supply power to the main board and the control board, and operating system software is burned on the main board and connected with the control board through an interface on the main board; the mainframe box 800 is provided with a touch display screen and a key assembly connected with the main board and the control board, and the touch display screen and the key assembly are respectively used for editing input control programs and controlling equipment operation.

The base 600 is fixed on the workbench 700, and the base 600 is provided with parts for forming the torsion waveguide tube by single-side torsion, wherein the parts comprise a servo motor 500 connected with a control board and used for driving corresponding parts to twist only from one end of the rectangular waveguide tube under the control instruction of the control board, and the other end of the rectangular waveguide tube is clamped by the corresponding parts and does not participate in torsion.

Referring to fig. 3 in combination, fig. 3 is an enlarged perspective view of the components located on the base of the table in fig. 2, and in particular, the components for a single-side twist-formed torsion tube include the foregoing servo motor 500, left-side transmission assembly, left-side clamping assembly, left-side case 410, right-side clamping assembly, right-side case 420, and right-side sliding assembly; the servo motor 500 is in driving connection with a left clamping assembly via a left driving assembly for twisting from one end of the rectangular waveguide 900, the left driving assembly is mounted above the base 600 of the table 700 of fig. 2 via a left case 410, the right clamping assembly is in sliding connection with a right sliding assembly via a right case 420, and the right sliding assembly is mounted on the base 600 of the table 700 of fig. 2.

In this embodiment, in order to facilitate the maintenance of the left case 410, the servo motor 500 may be mounted on the base 600 of the workbench 700 at the rear of the left case 410 via a motor fixing plate, and the motor shaft of the servo motor 500 is parallel to the first main shaft of the right clamping assembly, so as to reduce transmission loss.

Referring to FIG. 4, FIG. 4 is an enlarged view of the left hand drive assembly of FIG. 3 in a cut-away, horizontal axis view, with the left hand clamping assembly omitted for clarity; the left transmission assembly comprises a servo motor belt pulley 310, a synchronous belt 320 and a first main shaft belt pulley 330, wherein the servo motor belt pulley 310 is sleeved on a shaft shoulder of a rotating shaft of the servo motor 500 and is fixed through a servo motor belt pulley end cover 311; the first spindle pulley 330 is sleeved on the first spindle 110 and fixed via a first spindle pulley end cover 331, and is located on the left outer side of the left case 410; the synchronous belt 330 is sleeved on the servo motor belt pulley 310 and the first spindle belt pulley 330, and is used for driving the first spindle 110 to synchronously rotate under the driving of the servo motor 500.

Referring to fig. 5, fig. 5 is an enlarged view of a portion a in fig. 4, preferably, three elastic locking steel rings (312, 313 and 314) are sleeved between the servo motor pulley 310 and the rotating shaft of the servo motor 500 in parallel along the axial direction, two side surfaces of the elastic locking steel ring 313 clamped in the middle are inward inclined surfaces, inner side surfaces of the elastic locking steel rings (312 and 314) positioned at two sides are outward inclined surfaces, and the total width of the three elastic locking steel rings (312, 313 and 314) is larger than the thickness of an inner hole of the servo motor pulley 310 under the condition that the three elastic locking steel rings are contacted and are not subjected to external force; therefore, when the servo motor belt pulley 310 is fixed by the servo motor belt pulley end cover 311 through the bolt, the hole shoulder end surface at the inner side of the servo motor belt pulley 310 is tightly pressed on the shaft shoulder end surface of the servo motor 500 rotating shaft, and the elastic locking steel rings (312 and 314) at the two sides inwards squeeze the elastic locking steel ring 313 at the middle by utilizing the respective inclined surfaces, so that the elastic locking steel ring 313 at the middle outwards expands and sticks to the inner hole wall of the servo motor belt pulley 310, and meanwhile, the elastic locking steel rings (312 and 314) at the two sides inwards shrink and stick to the outer wall of the servo motor 500 rotating shaft, thereby greatly increasing the friction force between the servo motor belt pulley 310 and the servo motor 500 rotating shaft during rotation; obviously, this connection is easier to process and assemble and has a higher precision in rotation than conventional keyed connections.

Referring to fig. 6, fig. 6 is an enlarged view of a portion B in fig. 4, and similarly, three elastic locking steel rings (332, 333, and 334) are sleeved between the first spindle pulley 330 and the first spindle 110 side by side along the axial direction, two side surfaces of the elastic locking steel ring 333 sandwiched therebetween are both inward inclined surfaces, inner side surfaces of the elastic locking steel rings (332 and 334) located at two sides are both outward inclined surfaces, and the total width of the three elastic locking steel rings (332, 333, and 334) is greater than the thickness of the inner hole of the first spindle pulley 330 under the condition that the three elastic locking steel rings are contacted and not subjected to external force; because the first spindle 110 has no shaft shoulder, the first spindle belt wheel 330 is required to drive the first spindle 110 to rotate synchronously, the hole shoulder on the inner side end surface of the first spindle belt wheel 330 extends to the inner side of the left box 410, passes through the first flange 411 fixed on the left end surface of the left box 410 and is propped against the end surface of the plane bearing 412 on the left side of the left box 410, the first flange 411 is fixed in the counter bore on the left outer side surface of the left box 410 through bolts, the plane bearing 412 is fixed at the left end of the first spindle 110 through the first flange 411 and the first spindle left locking sleeve 414 with threads on two sides of the plane bearing 412, and a thrust cylindrical roller bearing 413 is further arranged between the plane bearing 412 and the first spindle left locking sleeve 414 and is matched with the first spindle left locking sleeve 414 to be screwed into the external threads on the left side of the first spindle 110 for fastening; therefore, when the first spindle pulley 330 is fixed by the first spindle pulley end cover 331 through the bolt, the hole shoulder end surface at the inner side of the first spindle pulley 330 is tightly pressed on the outer end surface of the plane bearing 412, and the elastic locking steel rings (332 and 334) at the two sides inwards squeeze the elastic locking steel ring 333 at the middle by utilizing the respective inclined surfaces, so that the elastic locking steel ring 333 at the middle outwards expands and sticks to the inner hole wall of the first spindle pulley 330, and meanwhile, the elastic locking steel rings (332 and 334) at the two sides inwards shrink and stick to the outer wall of the first spindle 110, thereby greatly increasing the friction force between the first spindle pulley 330 and the first spindle 110 during rotation; the connection mode is easier to process and assemble than the traditional key connection mode, and the precision is higher when rotating.

Referring to fig. 7, fig. 7 is an enlarged view of a portion C in fig. 4, and a first spindle flange 111 is integrally connected to a clamping end of the first spindle 110, so as to clamp an end of the rectangular waveguide 900 of fig. 3 from the left side in cooperation with related components; to ensure the free rotation of the first spindle 110, the right side wall of the left case 410 is provided with different stepped holes on both sides of the spindle hole thereof, wherein the outer two-stage stepped holes are used for respectively installing the planar bearing 415 and the first spindle flange 111 from inside to outside, while the inner stepped holes are used for installing the thrust cylindrical roller bearing 416 only, and are screwed into the external thread on the right side of the first spindle 110 for tightening via the threaded first spindle right locking sleeve 417.

Specifically, the main body of the first main shaft 110 is cylindrical, and preferably, in order to facilitate the installation and disassembly of the plane bearing 415 and the thrust cylindrical roller bearing 416, and facilitate the locking by using a locking sleeve, the outer side surface of the first main shaft 110 may be set to be a conical surface with a small inclination, for example, the taper angle does not exceed the morse taper, and due to the small taper, a certain torque can be transmitted by using the principle of friction force, and due to the taper fit, the disassembly is also facilitated.

Specifically, a first tensioning rod 120 capable of moving along the axial direction is installed inside the first main shaft 110; in order to reduce the total weight of the device, the first tension rod 120 is preferably made of a seamless steel tube under the premise of ensuring rigidity and strength; the right end of the first tension rod 120 is provided with external threads for being in threaded connection with the first elastic chuck 130; the section of the first elastic chuck 130 connected with the first tension rod 120 is a straight cylinder section and is provided with an internal thread matched with the external thread at the right end of the first tension rod 120; the other section of the first elastic chuck 130 is a conical stage section as a whole, and the diameter of the joint of the conical stage section and the straight cylinder section is smaller than that of the outer end surface; two mutually perpendicular equal-width forked grooves are axially arranged on the outer end surface of the conical table section, and the conical table section is equally divided into four petals with root parts connected; in order to improve the elasticity of the first elastic clamping head 130, it is preferable that the depths of the two split grooves extend to the middle part of the straight cylinder section, and round through holes with the diameter larger than the width of the split grooves are arranged at the root parts of the split grooves along the normal direction of the outer wall of the straight cylinder section for connection and transition, which is also beneficial to preventing stress cracks from being generated at the root parts of the split grooves; a square hole for inserting the rectangular waveguide tube is also formed in the center of the outer end surface of the cone frustum; an inner hole section of the flange end of the first main shaft 110 is an inner conical surface matched with the outer conical surface of the conical table section of the first elastic chuck 130; therefore, when the first tension rod 120 moves leftwards to pull the first elastic clamp 130, under the action of the inner conical surface of the flange end of the first main shaft 110, the split conical bench section on the first elastic clamp 130 is tightened, so that the end part of the rectangular waveguide tube 900 in fig. 3 is clamped from the left side; when the first tension rod 120 moves rightward to push the first elastic chuck 130, the split conical segment can spring open by itself to release the left end of the rectangular waveguide 900 in fig. 3.

Referring to fig. 8, fig. 8 is an enlarged perspective view of the left and right clamp assemblies of fig. 3; the left swing rod 140 in the left clamping assembly is hinged to the left swing rod fixing block 150 and can swing back and forth along the direction of the arrow, and the left swing rod fixing block 150 is fixed on the front outer wall of the left box 410 shown in fig. 3 through bolts; the first elastic chuck 130 in the left clamping assembly is matched with the first spindle 110 to clamp the left end of the rectangular waveguide 900 through the manual left swinging rod 140, the first spindle 110 is driven by the first spindle belt wheel 330 to rotate, the left end of the rectangular waveguide 900 is twisted, and the left end of the rectangular twisted waveguide 900 is loosened through the manual left swinging rod 140 after the twisting is completed; similarly, the right swing rod 240 in the right clamping assembly is hinged to the right swing rod fixing block 250 and can swing back and forth along the direction of the arrow shown in the drawing, and the right swing rod fixing block 250 is fixed on the front outer wall of the right box 420 shown in fig. 3 through bolts; the second collet 230 in the right clamping assembly cooperates with the second spindle 210 to clamp the right end of the rectangular waveguide 900 by the manual right swing lever 240 and unclamp the right end of the rectangular waveguide 900 by the manual right swing lever 240 after the twisting is completed.

The left side clamping assembly and the right side clamping assembly are provided with identical and symmetrically arranged parts, and are shown in combination with fig. 9 and 10, wherein fig. 9 is an enlarged perspective view of the right side clamping assembly in fig. 8, and fig. 10 is an exploded view of fig. 9; taking a right side clamping assembly as an example, the right side clamping assembly comprises a second elastic chuck 230, a second main shaft 210, a right swinging rod 240, a right swinging rod fixing block 250, a second tensioning rod 220, a second conical sliding plate 260, a second movable claw assembly 270, a second movable claw bracket 280 and a second supporting baffle plate 290; wherein:

the second elastic chuck 230 is screwed on the left external thread of the second tension rod 220, two key blocks 231 are symmetrically arranged on the outer wall of the threaded end of the second elastic chuck 230, and key grooves which are adapted to be clamped into the two key blocks 231 are correspondingly arranged on the inner hole wall of the flange end of the second main shaft 210, so that the rotation of the second elastic chuck 230 is jointly fixed by combining the inner taper hole section of the flange end of the second main shaft 210 under the condition that the right end of the rectangular waveguide 900 is clamped by the second elastic chuck 230;

the right swing rod 240 is formed by connecting a shifting fork part 242 and a handle rod part 241, the shifting fork part 242 is U-shaped, and two inner side walls of the head part of the shifting fork part 242 are respectively provided with a convex oblong shifting block 242a; one end of the handle rod portion 241 connected with the shifting fork portion 242 is hinged on the top surface of one end of the right swing rod fixing block 250 through a pin shaft 251; the right swing rod fixing block 250 is fixed on the front side wall of the right box 420 in fig. 3 through bolts; the second tension rod 220 penetrates into the second main shaft 210 and can move back and forth along the axial direction thereof;

The second conical slide plate 260 is sleeved at the right rear part of the second tension rod 220 and can slide back and forth along the axial direction of the second tension rod, and the assembly gap between the second conical slide plate and the second tension rod is preferably about 0.2 mm; the part of the second conical slide plate 260 close to the inner side is a cylindrical section, a circle of shifting block grooves 261 which are matched with two oblong shifting blocks 242a on the right swinging rod 240 in a clamping way are arranged on the outer wall of the cylindrical section, the part of the second conical slide plate 260 close to the outer side is a conical table section, and the outer diameter of the conical table section at the joint of the conical table section and the cylindrical section is larger;

the second movable claw assembly 270 is composed of three (or four) movable claws, the front half part of each movable claw is in an inward arc shape, the front end of each movable claw is used for propping against the second conical sliding plate 260, and the rear half part of each movable claw is provided with a pin shaft hole for being hinged on the second movable claw bracket 280; the second moveable jaw support 280 is sleeve-shaped, an inner hole wall of the second moveable jaw support 280 is provided with an inner thread for being screwed into an outer thread at the right end of the second tensioning rod 220, two sides of the second moveable jaw support 280 are respectively fixed by using threaded check rings (281 and 282), three (or four) moveable jaw clamping grooves are uniformly distributed on the outer wall of the second moveable jaw support 280, and the rear half parts of the three (or four) moveable jaws are hinged in the respective moveable jaw clamping grooves through respective pin shafts 271;

The second supporting baffle 290 is disc-shaped, and has an inner hole wall provided with an inner thread for being screwed into an outer thread at the right end of the second tightening rod 220, and is located at the outer side of the second moveable jaw support 280, and is fixed by a threaded retainer 291; the end surface of the second supporting baffle plate 290 close to the inner side is a conical table surface, and the taper of the conical table surface is larger than that of the conical section of the second conical sliding plate 260; the rear ends of all the movable claws are abutted against the conical table surface of the second supporting plate 290 after assembly.

As shown in connection with fig. 10 and 11, fig. 11 is an enlarged view of the right clamping assembly of fig. 3 in a vertical axis cut-away view at the right housing, after assembly, the second spindle 210 is positioned laterally within the spindle bore of the right housing 420 and is coaxial with the first spindle 110 of fig. 8; on the one hand, at the left side wall of the right case 420, by tightening the second spindle left locking sleeve 427 with threads, the thrust cylindrical roller bearing 426 embedded in the left inner side wall of the right case 420 and the plane bearing 425 embedded in the left outer side wall of the right case 420 are tightened in cooperation with the second spindle flange portion 211 embedded in the left outer side wall of the right case 420; on the other hand, at the right side wall of the right case 420, the thrust cylindrical roller bearing 423 embedded in the right inner side wall of the right case 420 and the plane bearing 422 embedded in the right outer side wall of the right case 420 are tightened by tightening the second spindle right locking sleeve 424 with threads, in cooperation with the second flange 421 embedded in the right outer side wall of the right case 420.

Whereas the servo motor 500 and the left transmission assembly in fig. 4 can rotate the first spindle 110, the left end of the rectangular waveguide 900 in fig. 3 can be twisted, for this purpose, in fig. 11, the flange end of the second spindle 210 may be fixed on the left side wall of the right case 420 by using bolts and positioning pins, and two key blocks 231 on the outer wall of the threaded end of the second collet 230 in fig. 10 are clamped by using two key grooves on the inner wall of the flange end of the second spindle 210, and the rotation of the second collet 230 is jointly prevented by combining the static friction force between the two conical surfaces while clamping the right end of the rectangular waveguide 900.

The second tension rod 220 disposed in the central hole of the second spindle 210 can move back and forth along the axial direction thereof, and the left end of the second tension rod 220 is disposed in the central hole of the second spindle 210 and is in threaded connection with the second elastic chuck 230; the right end of the second tension rod 220 extends out of the center hole of the second spindle 210 and is in threaded connection with the second supporting baffle 290, and the second supporting baffle 290 is fixed by a threaded retainer 291; the second conical slide plate 260 is sleeved on the right rear part of the second tensioning rod 220, and two oblong shifting blocks 242a of the shifting fork part 242 of the right swinging rod 240 are clamped in a shifting block groove 261 on the left outer wall of the second conical slide plate 260, so as to shift the second conical slide plate 260 to move back and forth along the axial direction of the second tensioning rod 220; the second movable jaw support 280 is fixed to the second tension rod 220 between the second tapered slider disc 260 and the second supporting spacer disc 290 via two threaded retainers (281 and 282), and three (or four) movable jaws on the second movable jaw support 280 are supported at their front ends on the second tapered slider disc 260 and at their rear ends on the second supporting spacer disc 290.

When the right swing lever 240 of fig. 8 swings outwardly, the pulling block 242a of the pulling fork portion 242 pulls the second tapered slider 260 of fig. 11 to move in a direction approaching the right box 420, so that the front ends of the three (or four) movable claws abut against the tapered table section of the second tapered slider 260 and move toward the small end thereof, and at the same time, the rear ends of the three (or four) movable claws abut against the tapered table surface of the second supporting baffle plate 290 and move toward the large end thereof, driving the second tension rod 220 and the second collet 230 at the left end thereof to move together to the left side, and the outer tapered surface of the second collet 230 self-springs open after disengaging the inner tapered hole at the flange end of the second main shaft 210, thereby releasing the right end of the rectangular torsion waveguide 900 after torsion.

While the state shown in fig. 11 is a state in which the right end of the rectangular waveguide 900 of fig. 8 is locked before and during the twisting, at this time, the right swing lever 240 of fig. 8 swings inwardly, and the pulling block 242a of the pulling fork portion 242 pulls the second tapered slider 260 of fig. 11 to move away from the right box 420, so that the front ends of the three (or four) movable claws abut against the conical land of the second tapered slider 260 and move toward the large end thereof, and finally the front ends of the three (or four) movable claws abut against the junction of the cylindrical section and the conical land of the second tapered slider 260, and at the same time, the rear ends of the three (or four) movable claws abut against the conical land of the second supporting disk 290 and move toward the small end thereof, driving the second tension lever 220 and the second elastic chuck 230 at the left end thereof to move together to the right, and as the conical land of the second elastic chuck 230 enters into the inner tapered hole of the flange end of the second main shaft 210, the four flaps of the second elastic chuck 230 tighten inwardly, thereby clamping the right side of the second elastic chuck 230 before and during the twisting of the rectangular waveguide 900 of fig. 8.

It should be noted that, in fig. 8, the left clamping assembly includes a first elastic chuck 130, a first main shaft 110, a left swing rod 140, a left swing rod fixing block 150, a first tension rod 120, a first conical slide 160, a first movable jaw assembly 170, a first movable jaw support 180 and a first support baffle 190; the structures of the parts in the left clamping assembly and the connection positional relationship between the parts are symmetrically arranged with the structures of the parts in the right clamping assembly and the connection positional relationship between the parts, and are not described herein.

Referring to FIG. 12, FIG. 12 is an enlarged vertical cross-sectional view of the right slide assembly of FIG. 3 at the right housing, with the right clamp assembly omitted for clarity; the right sliding component is used for driving the right box 420 and a right clamping component on the right box to slide so as to adaptively clamp rectangular waveguides with different lengths, and comprises two sliding rails (621 and 622), two sliding blocks (631 and 632), a screw 640, a screw 650 and a hand wheel 670; wherein, two sliding rails (621 and 622) are symmetrically fixed on the base 600 of the workbench 700 in fig. 2 through bolts in a transverse and front-rear direction, two sliding blocks (631 and 632) are symmetrically fixed on the lower parts of the front and rear outer side walls of the right box 420 in fig. 3 through bolts in a transverse and front-rear direction, the sliding blocks 631 (or 632) are clamped in the corresponding sliding rails 621 (or 622) and can slide back and forth, and the assembly gap between the sliding blocks is preferably not more than 0.02mm and corresponding lubricating oil is smeared so as to reduce the friction resistance when the sliding blocks 631 (or 632) slide; the screw 640 is fixed on the bottom surface of the right case 420 via a screw fixing seat 660; a screw fixing plate 610 is fixed on the right side surface of the base 600 of the table 700 in fig. 2, for connection with the right side of the screw 650 via a corresponding fixing member; the left end of the screw 650 is rotated through from the screw 640 and connected to the base 600 via a corresponding fixing member; the hand wheel 670 is connected to the right end of the screw 650, and the hand wheel 670 is provided with a handle, so that the hand wheel 670 is manually rotated to drive the screw 650 to rotate, and the right box 420 and the right clamping assembly thereon move back and forth along with the screw 640 on the screw 650 between the two sliding rails (621 and 622).

Referring to fig. 13, fig. 13 is an enlarged view of a portion D in fig. 12, taking a rear slide rail 622 and a slide block 632 as an example, a slide rail through groove 622a is provided on an inner side wall of the slide rail 622 along a length direction thereof, convex V-shaped platforms 622b are provided on middle portions of cross sections of upper and lower surfaces of the slide rail through groove 622a along a length direction thereof, concave V-shaped through grooves 623b are provided on middle portions of cross sections of upper and lower surfaces of the slide block 632 along a length direction thereof correspondingly, and after assembly, the V-shaped platforms 622b and the V-shaped through grooves 632b are mutually matched in shape and dimension.

The operation process of the rectangular torsion waveguide tube single-side torsion forming device comprises the following steps: pre-plugging polytetrafluoroethylene rectangular strips into the rectangular waveguide 900; after the power-on, parameters such as rotation speed, angle, time and the like for controlling torsion are input into a control program of the main board through the touch display screen in advance; inserting the left end of the rectangular waveguide 900 to be torsionally formed into the first collet 130 of the left clamping assembly, and pulling the first tension rod 140 inwardly so that the first collet 130 clamps the left end of the rectangular waveguide 900; rotating the hand wheel 670 in the right slide assembly, and adjusting the position of the right case 420 to the left so that the right end of the rectangular waveguide 900 is inserted into the second collet 230 of the right clamp assembly, and then pulling the second tension rod 240 inward so that the second collet 240 clamps the right end of the rectangular waveguide 900; pressing a start button on the main cabinet 800, outputting a control instruction by the main board, controlling a servo motor 500 in the left transmission assembly to rotate by a set angle by the control board, driving a first main shaft belt pulley 330 to rotate by the same angle through a servo motor belt pulley 310 and a synchronous belt 320, driving a first elastic chuck 130 to twist the left end of a rectangular waveguide 900 through a first main shaft 110, and completing single-side twist molding of the rectangular waveguide 900 (namely, the rectangular waveguide 900 after twist molding, the same applies below); pressing a start pause button on the main cabinet 800 to pull the first tension rod 140 outwards, so that the first elastic chuck 130 releases the left end of the rectangular torsion waveguide 900; rotating the handwheel 670 in the right slide assembly in reverse, moving the right housing 420 to the right, such that the left end of the rectangular twist waveguide 900 is a distance from the first collet 130 and in a position that facilitates removal of the rectangular twist waveguide 900; pulling the second tension rod 240 outwards to enable the second elastic chuck 230 to loosen the right end of the rectangular torsion waveguide 900, and taking out the rectangular torsion waveguide 900 after single-side torsion molding; finally, the polytetrafluoroethylene strip in the rectangular twisted waveguide 900 is taken out by using a tool such as forceps.

In order to ensure the surface quality of the inner cavity of the rectangular twisted waveguide tube 900, the rectangular twisted waveguide tube single-side twisting forming device specially adopts polytetrafluoroethylene strips as filling materials during twisting, and the inner cavity surface of the rectangular twisted waveguide tube 900 is not easy to be damaged due to the low mechanical property, small friction coefficient and good extensibility of the polytetrafluoroethylene materials; specifically, the shape of the polytetrafluoroethylene strip is matched with the shape of the inner cavity of the rectangular waveguide tube 900, the assembly gap between the polytetrafluoroethylene strip and the rectangular waveguide tube after being plugged is not more than 0.02mm, and the length of the polytetrafluoroethylene strip is the same as that of the rectangular waveguide tube 900.

Meanwhile, in order to reduce the deformation of the rectangular twisted waveguide 900 locally generated at the pipe wall during the one-side twisting, the rotation speed of the servo motor 500 is stable and uniform, and is not easy to be too fast, and preferably, the angular speed of the rotation of the servo motor 500 is not more than 5 °/second.

In addition, in view of the resilience of the rectangular waveguide 900 material, it is preferable that the rotation angle of the first spindle pulley 330 is controlled to be between 90.5 ° and 91.5 °.

It should be understood that the foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the technical solutions of the present invention, and it should be understood that the foregoing may be added, substituted, altered or modified within the spirit and principle of the present invention by those skilled in the art, and all such added, substituted, altered or modified embodiments fall within the scope of the appended claims.

Claims

1. A unilateral torsion molding device of a rectangular torsion waveguide tube is characterized in that: the device comprises a servo motor, a left transmission assembly, a left clamping assembly, a left box body, a right clamping assembly, a right box body and a right sliding assembly; the servo motor is in transmission connection with the left clamping assembly through the left transmission assembly and is used for twisting one end of the rectangular waveguide tube, the left transmission assembly is arranged above the base of the workbench through the left box body, the right clamping assembly is in sliding connection with the right sliding assembly through the right box body, and the right sliding assembly is arranged on the base of the workbench; and, in addition, the method comprises the steps of,

the left transmission assembly comprises a servo motor belt wheel, a synchronous belt and a first main shaft belt wheel, wherein the servo motor belt wheel is sleeved on a shaft shoulder of a servo motor rotating shaft and is fixed through a servo motor belt wheel end cover, the first main shaft belt wheel is sleeved on the first main shaft and is fixed through a first main shaft belt wheel end cover and is positioned on the left outer side of the left box body, and the synchronous belt is sleeved on the servo motor belt wheel and the first main shaft belt wheel and is used for driving the first main shaft to synchronously rotate under the driving of the servo motor; wherein:

three elastic locking steel rings are sleeved between the servo motor belt wheel and the servo motor rotating shaft side by side along the axial direction, two side surfaces of the elastic locking steel ring clamped in the middle are inward inclined surfaces, the inner side surfaces of the elastic locking steel rings positioned at the two sides are outward inclined surfaces, and the total width of the three elastic locking steel rings is larger than the thickness of an inner hole of the servo motor belt wheel under the condition that the three elastic locking steel rings are contacted and are not subjected to external force;

the first supporting baffle disc is disc-shaped, an inner thread is arranged on the inner hole wall of the first supporting baffle disc and is used for being screwed into an outer thread at the left end of the first tensioning rod, and the first supporting baffle disc is positioned at the outer side of the first movable claw support and is fixed by a retainer ring with threads; the end face of the first supporting baffle disc, which is close to the inner side, is a conical table surface, and the taper of the conical table surface is larger than that of the conical section of the first conical sliding disc; after assembly, the rear ends of all the movable claws are propped against the conical table top of the first supporting baffle disc;

the right side clamping assembly comprises a second elastic chuck, a second main shaft, a right swinging rod fixing block, a second tensioning rod, a second conical sliding disc, a second movable claw assembly, a second movable claw bracket and a second supporting baffle disc; wherein:

The second supporting baffle disc is disc-shaped, an inner thread is arranged on the inner hole wall of the second supporting baffle disc and is used for being screwed into an outer thread at the right end of the second tensioning rod, and the second supporting baffle disc is positioned at the outer side of the second movable claw support and is fixed by a retainer ring with threads; the end surface of the second supporting baffle disc, which is close to the inner side, is a conical table surface, and the taper of the conical table surface is larger than that of the conical section of the second conical sliding disc; after assembly, the rear ends of all the movable claws are propped against the conical table surface of the second supporting baffle disc;

the right side sliding assembly comprises two sliding rails, two sliding blocks, a nut, a screw rod and a hand wheel; the two sliding rails are transversely and symmetrically fixed on the base of the workbench through bolts, the two sliding blocks are transversely and symmetrically fixed on the lower parts of the front and rear sides of the right box body through bolts, and the sliding blocks are clamped in the corresponding sliding rails and can slide back and forth; the screw is fixed on the bottom surface of the right box body through a screw fixing seat; a screw rod fixing plate is fixed on the right side surface of the base of the workbench and is used for being connected with the right side of the screw rod through a corresponding fixing piece; the left end of the screw rod passes through the screw rod in a rotating way and is connected with the base through a corresponding fixing piece, the hand wheel is connected to the right end of the screw rod and is provided with a handle, and the hand wheel is used for driving the screw rod to rotate by manually rotating the hand wheel, so that the right box body and the right side clamping assembly on the right box body move back and forth along with the screw rod between the two sliding rails.

2. The single-sided twist forming device of a rectangular twist waveguide tube as set forth in claim 1, wherein: the clamping end of the first main shaft is integrally connected with a first main shaft flange part, the two sides of the right side wall of the left box body at the main shaft hole of the left box body are respectively provided with different step holes, the two outer step holes are respectively used for being filled with a plane bearing and the first main shaft flange part from inside to outside, the step holes on the inner side are only used for being filled with a thrust cylindrical roller bearing, and the step holes are screwed into external threads on the right side of the first main shaft for tightening through a first main shaft right locking sleeve with threads; the method comprises the steps of,

3. The single-sided twist forming device of a rectangular twist waveguide tube as set forth in claim 1, wherein: three elastic locking steel rings are sleeved between the first main shaft belt wheel and the first main shaft side by side along the axial direction, two side surfaces of the elastic locking steel ring clamped in the middle are inward inclined surfaces, the inner side surfaces of the elastic locking steel rings positioned at the two sides are outward inclined surfaces, and the total width of the three elastic locking steel rings is larger than the thickness of the inner hole of the first main shaft belt wheel under the condition that the three elastic locking steel rings are contacted and not subjected to external force; the method comprises the steps of,

4. The single-sided twist forming device of a rectangular twist waveguide tube as set forth in claim 1, wherein: the second main shaft is transversely positioned in a main shaft hole of the right box body and is coaxial with the first main shaft in the left box body; at the left side wall of the right box body, a second spindle left locking sleeve with threads is screwed, and a second spindle flange part embedded in the left outer side wall of the right box body is matched, so that a thrust cylindrical roller bearing embedded in the left inner side wall of the right box body and a plane bearing embedded in the left outer side wall of the right box body are tightened; and the right side wall of the right box body is tightly sleeved with a second main shaft right locking sleeve with threads by screwing, and the second flange embedded in the right outer side wall of the right box body is matched with the second flange to tighten the thrust cylindrical roller bearing embedded in the right inner side wall of the right box body and the plane bearing embedded in the right outer side wall of the right box body.

5. The single-sided twist forming device of a rectangular twist waveguide tube as set forth in claim 4, wherein: and the second main shaft is fixed on the left side wall of the right box body through bolts and positioning pins at the flange end of the second main shaft.

6. The single-sided twist forming device of a rectangular twist waveguide tube as set forth in claim 1, wherein: the sliding rail is characterized in that a sliding rail through groove is formed in the inner side wall of the sliding rail along the length direction of the sliding rail through groove, convex V-shaped tables are arranged in the middle of the upper surface and the lower surface of the sliding rail through groove along the length direction of the sliding rail through groove, concave V-shaped through grooves are formed in the middle of the upper surface and the lower surface of the sliding block along the length direction of the sliding block, and the V-shaped tables and the V-shaped through grooves are mutually matched in shape and size.

7. The single-sided twist molding apparatus of a rectangular twist waveguide according to any one of claims 1 to 6, wherein: the rectangular waveguide tube is internally provided with a polytetrafluoroethylene strip as a filling material during torsion, the polytetrafluoroethylene strip is matched with the shape of the inner cavity of the rectangular waveguide tube in shape, the assembly gap between the polytetrafluoroethylene strip and the rectangular waveguide tube after the polytetrafluoroethylene strip is plugged in is not more than 0.02mm, and the length of the polytetrafluoroethylene strip is the same as that of the rectangular waveguide tube.