阅读说明：本技术 一种大螺距大长径比螺旋天线的成型装置 (Forming device of large-pitch and large-length-diameter-ratio helical antenna ) 是由 许春停 吴文煜 陈该青 张辉 朱春临 李盛鹏 吴瑛 胡梦园 于 2021-08-11 设计创作，主要内容包括：本发明涉及一种大螺距大长径比螺旋天线的成型装置,属于机械加工装置技术领域。该成型装置包括机架、导向机构、送丝机构、动力机构、校直机构和成型机构。导向机构包括三根以上的送丝导向杆；送丝机构包括两对送丝轮；动力机构包括电机和十字换向器；校直机构包括一对校直块；成型机构包括三个结构相同的调节机构；工作时,被成型丝由导向机构进入,通过送丝导向轮随被形成丝一起旋转,对被形成丝进行去应力校直；通过动力输出轴及校直块把被形成丝推送至成型机构,在成型机构的呈放射状的螺旋半径调节杆、螺距调节杆和支撑调节杆的作用下,绕制成螺旋状的螺旋天线。本发明实现高精度、不同螺距、不同螺旋半径的螺旋天线的制造。(The invention relates to a forming device of a large-pitch and large-length-diameter-ratio spiral antenna, belonging to the technical field of machining devices. The forming device comprises a frame, a guide mechanism, a wire feeding mechanism, a power mechanism, a straightening mechanism and a forming mechanism. The guide mechanism comprises more than three wire feeding guide rods; the wire feeding mechanism comprises two pairs of wire feeding wheels; the power mechanism comprises a motor and a cross commutator; the straightening mechanism comprises a pair of straightening blocks; the forming mechanism comprises three adjusting mechanisms with the same structure; when the device works, the formed wire enters from the guide mechanism and rotates along with the formed wire through the wire feeding guide wheel to perform stress relief straightening on the formed wire; the formed wire is pushed to a forming mechanism through a power output shaft and a straightening block, and a spiral helical antenna is wound under the action of a radial helical radius adjusting rod, a pitch adjusting rod and a support adjusting rod of the forming mechanism. The invention realizes the manufacture of the helical antenna with high precision, different screw pitches and different helical radiuses.)

1. The utility model provides a big pitch major diameter ratio helical antenna's forming device which characterized in that: comprises a frame (15), a guide mechanism, a wire feeding mechanism, a power mechanism, a straightening mechanism and a forming mechanism;

the guide mechanism, the wire feeding mechanism, the power mechanism, the straightening mechanism and the forming mechanism are all fixedly arranged on the rack (15);

the guide mechanism comprises more than three wire feeding guide rods (2), the more than three wire feeding guide rods (2) are arranged in a staggered mode to form two parallel rows, and a central line is arranged between the two parallel rows of the wire feeding guide rods (2); more than three wire feeding guide rods (2) are rotatably arranged on the rack (15);

the wire feeding mechanism comprises two pairs of wire feeding wheels (3), the two pairs of wire feeding wheels (3) and the central lines of the two rows of wire feeding guide rods (2) are on the same straight line, each pair of wire feeding wheels (3) is arranged up and down, and the wire feeding wheel (3) positioned above is a driving wheel; one pair of wire feeding wheels (3) is an input end, and the other pair of wire feeding wheels (3) is an output end;

the power mechanism comprises a motor (6) and a cross commutator (7), an output shaft of the motor (6) is connected with the middle part of the cross commutator (7), two output ends of the cross commutator (7) are respectively connected with one end of a transmission rod (20), the other ends of the two transmission rods (20) are respectively connected with two power output shafts (5) through a pair of bevel gear pairs, and driving wheels in the two pairs of wire feeding wheels (3) are driven through the two power output shafts (5);

the straightening mechanism comprises a pair of straightening blocks (4), the straightening blocks (4) are parallel horizontal rods, and the straightening blocks (4) are positioned between the two wire feeding wheels (3) in a floating manner; the outlets of the pair of wire feeding wheels (3) positioned at the output end are provided with forming guide blocks (11), and the forming guide blocks (11) are in a horizontal rod shape and are positioned on a horizontal straight line with the pair of straightening blocks (4);

the forming mechanism comprises three adjusting mechanisms with the same structure, namely a spiral radius forming mechanism, a pitch forming mechanism and a support adjusting mechanism; the spiral radius forming mechanism comprises a forming support (8), a spiral radius adjusting rod (9) and a locking screw; the pitch forming mechanism comprises a forming support (8), a pitch adjusting rod (10) and a locking screw; the supporting and adjusting mechanism comprises a forming support (8), a supporting and adjusting rod (13) and a locking screw; the rod end of the spiral radius adjusting rod (9), the rod end of the pitch adjusting rod (10) and the rod end of the support adjusting rod (13) are relatively radial;

when the spiral antenna works, formed wires enter from the guide mechanism, enter the straightening mechanism to be straightened under the driving of the wire feeding mechanism, and are wound into a spiral antenna under the action of the radial spiral radius adjusting rod (9), the radial pitch adjusting rod (10) and the support adjusting rod (13) of the forming mechanism.

2. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the wire feeding guide rod (2) is a cylindrical rod, and a radial groove is formed in the cylindrical rod; the width of the groove is larger than the diameter of the formed wire, the depth of the groove is smaller than the diameter of the formed wire, and the center of the groove is consistent with the forming position; the wire feeding guide rod (2) realizes the stress removal of the formed wire while guiding.

3. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the radial middle part of the wire feeding wheel (3) is provided with an arc groove, and the width of the arc groove is smaller than the diameter of the molded wire; a wire passing space is formed between the arc grooves of the wire feeding wheels (3).

4. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the motor (6) is a two-phase alternating current servo motor.

5. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: v-shaped grooves are respectively formed in the central lines of the opposite surfaces of the pair of straightening blocks (4), the width of each V-shaped groove is smaller than the diameter of the formed wire, and the two ends of each straightening block (4) are in a tip shape; the pair of straightening blocks (4) is fixedly clamped by a tightening pressure plate (17), an elastic support (19) and a pressing bolt (18).

6. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the forming guide block (11) and the straightening block have the same structure.

7. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the spiral radius adjusting rod (9) of the spiral radius forming mechanism is a screw rod and penetrates through the forming support (8) through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support (8), and a locking screw (14) is arranged on the forming support (8) vertical to the screw rod; the telescopic operation of the spiral radius adjusting rod (9) is realized by operating the nut end (12) of the spiral radius adjusting rod (9), and the working length is locked by a locking screw (14); the working end of the spiral radius adjusting rod (9) is an arc end.

8. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the screw pitch adjusting rod (10) of the screw pitch forming mechanism is a screw rod and penetrates through the forming support (8) through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support (8), and a locking screw (14) is arranged on the forming support (8) vertical to the screw rod; the telescopic operation of the pitch adjusting rod (10) is realized by operating the nut end of the pitch adjusting rod (10), and the working length is locked by a locking screw; the working end of the pitch adjusting rod (10) is an arc end.

9. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the support adjusting rod (13) of the support adjusting mechanism is a screw rod and penetrates through the forming support (8) in a threaded fit mode, the nut end and the working end of the screw rod are respectively positioned outside the forming support (8), and a locking screw (14) is arranged on the forming support (8) perpendicular to the screw rod; the support adjusting rod (13) is stretched by operating the nut end (12) of the support adjusting rod (13), and the working length is locked by a locking screw; the working end of the support adjusting rod (13) is an arc end.

10. A molding apparatus for a large-pitch large-length-diameter-ratio helical antenna according to claim 1, wherein: the pair of straightening blocks (4) is fixedly clamped by a tightening pressure plate (17), an elastic support (19) and a pressing bolt (18).

Technical Field

The invention belongs to the technical field of machining devices, and relates to a forming device of a large-pitch and large-length-diameter-ratio spiral antenna.

Background

Aiming at the forming process of the small-batch, multi-variety, large-pitch and large-length-diameter-ratio spiral antenna, the existing forming process adopts a processing forming core mould, a metal wire heat treatment softening, a metal wire winding core mould and a spiral antenna heat treatment shaping forming. This forming method generally has several basic requirements: 1. the core mould is made of a material with the characteristics of good rigidity, good thermal stability, easy processing and the like; 2. the physical properties of the formed material are changed by adopting heat treatment, so that the formed material has the characteristics of good shaping during forming and good rigidity after heat treatment; 3. determining the shape of a forming core mold according to the shape of the finally formed spiral antenna, the bending forming resilience coefficient of the material and the resilience coefficient of the material during heat treatment, and processing the forming core mold in a machining mode; 4. manually or mechanically winding a metal wire on the core mold and fixing; 5. and carrying out heat treatment on the metal wire belt core mold.

The molding method has the following defects: 1. different core moulds are designed and manufactured for forming different specifications, so that the period is long and the cost is high; 2. the molding process has more working procedures, the influence factors are complex, and the qualification rate of finished products is not easy to guarantee; 3. the range of the molding material and the size of the diameter of the formed wire are limited by the molding method; 4. the metal wire is provided with a core mould for heat treatment, the utilization rate of the core mould is lower, and the forming period is longer. With the development of the existing microwave technology and digital technology, the antenna with the function of bearing microwave signals has the requirements of higher precision, wider application range and diversified varieties, but the existing spiral antenna forming process has the problems of long period, low precision, high cost and the like, and a low-cost and high-efficiency manufacturing method suitable for multi-variety and small-batch production needs to be developed.

Disclosure of Invention

The invention provides a forming device of a large-pitch and large-length-diameter-ratio spiral antenna, which aims to solve the problems that a special die is needed for forming the large-pitch and large-size variable-pitch antenna at present, the forming precision is low, and the forming period is long.

A molding device of a large-pitch and large-length-diameter-ratio helical antenna comprises a frame 15, a guide mechanism, a wire feeding mechanism, a power mechanism, a straightening mechanism and a molding mechanism;

the guide mechanism, the wire feeding mechanism, the power mechanism, the straightening mechanism and the forming mechanism are all fixedly arranged on the rack 15;

the guide mechanism comprises more than three wire feeding guide rods 2, the more than three wire feeding guide rods 2 are arranged in a staggered mode to form two parallel rows, and a central line is arranged between the two parallel rows of wire feeding guide rods 2; more than three wire feeding guide rods 2 are rotatably arranged on the frame 15;

the wire feeding mechanism comprises two pairs of wire feeding wheels 3, the two pairs of wire feeding wheels 3 and the central lines of the two rows of wire feeding guide rods 2 are on the same straight line, each pair of wire feeding wheels 3 are arranged up and down, and the wire feeding wheel 3 positioned above is a driving wheel; one pair of wire feeding wheels 3 is an input end, and the other pair of wire feeding wheels 3 is an output end;

the power mechanism comprises a motor 6 and a cross-shaped commutator 7, an output shaft of the motor 6 is connected with the middle part of the cross-shaped commutator 7, two output ends of the cross-shaped commutator 7 are respectively connected with one end of a transmission rod 20, the other ends of the two transmission rods 20 are respectively connected with two power output shafts 5 through a pair of bevel gear pairs, and driving wheels in the two pairs of wire feeding wheels 3 are driven through the two power output shafts 5;

the straightening mechanism comprises a pair of straightening blocks 4, the straightening blocks 4 are parallel horizontal rods, and the straightening blocks 4 are positioned between the two wire feeding wheels 3 in a floating manner; the outlets of the pair of wire feeding wheels 3 positioned at the output end are provided with forming guide blocks 11, and the forming guide blocks 11 are in a horizontal rod shape and are positioned on a horizontal straight line with the pair of straightening blocks 4;

the forming mechanism comprises three adjusting mechanisms with the same structure, namely a spiral radius forming mechanism, a pitch forming mechanism and a support adjusting mechanism; the spiral radius forming mechanism comprises a forming support 8, a spiral radius adjusting rod 9 and a locking screw; the pitch forming mechanism comprises a forming support 8, a pitch adjusting rod 10 and a locking screw; the supporting and adjusting mechanism comprises a forming support 8, a supporting and adjusting rod 13 and a locking screw; the rod end of the spiral radius adjusting rod 9, the rod end of the pitch adjusting rod 10 and the rod end of the support adjusting rod 13 are relatively radial;

when the spiral antenna works, the formed wire enters from the guide mechanism, enters the straightening mechanism to be straightened under the drive of the wire feeding mechanism, and is wound into a spiral antenna under the action of the radial spiral radius adjusting rod 9, the radial pitch adjusting rod 10 and the support adjusting rod 13 of the forming mechanism.

The further concrete technical scheme is as follows:

the wire feeding guide rod 2 is a cylindrical rod, and a radial groove is formed in the cylindrical rod; the width of the groove is larger than the diameter of the formed wire, the depth of the groove is smaller than the diameter of the formed wire, and the center of the groove is consistent with the forming position; the wire feeding guide rod 2 realizes the stress removal of the formed wire while guiding.

The radial middle part of the wire feeding wheel 3 is provided with an arc groove, and the width of the arc groove is smaller than the diameter of the molded wire; a wire passing space is formed between the arc grooves of the wire feeding wheels 3.

The motor 6 is a two-phase alternating current servo motor.

V-shaped grooves are respectively arranged on the central lines of the opposite surfaces of the pair of straightening blocks 4, the width of each V-shaped groove is smaller than the diameter of the formed wire, and the two ends of each straightening block 4 are in a tip shape; the pair of straightening blocks 4 are fixedly clamped by a tightening pressure plate 17, an elastic support 19 and a compression bolt 18.

The forming guide block 11 and the straightening block have the same structure.

The spiral radius adjusting rod 9 of the spiral radius forming mechanism is a screw rod and penetrates through the forming support 8 through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod; the telescopic function of the spiral radius adjusting rod 9 is realized by operating the nut end 12 of the spiral radius adjusting rod 9, and the working length is locked by a locking screw 14; the working end of the spiral radius adjusting rod 9 is a circular arc end.

The screw pitch adjusting rod 10 of the screw pitch forming mechanism is a screw rod and penetrates through the forming support 8 through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod; the telescopic operation of the pitch adjusting rod 10 is realized by operating the nut end of the pitch adjusting rod 10, and the working length is locked by a locking screw; the working end of the pitch adjusting rod 10 is a circular arc end.

The support adjusting rod 13 of the support adjusting mechanism is a screw rod and penetrates through the forming support 8 through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod; the support adjusting rod 13 is stretched and contracted by operating the nut end 12 of the support adjusting rod 13, and the working length is locked by a locking screw; the working end of the support adjusting rod 13 is a circular arc end.

The pair of straightening blocks 4 are fixedly clamped by a tightening pressure plate 17, an elastic support 19 and a compression bolt 18.

The beneficial technical effects of the invention are embodied in the following aspects:

1. the device realizes the molding of the large-pitch large-length-diameter-ratio spiral antenna with different pitches and different spiral radiuses. The device is provided with the straightening mechanism, the guide mechanism and the forming mechanism, so that the surface quality, the forming stability and the forming precision of the forming wire can be ensured.

2. By the staggered arrangement of the three or more wire feed guide rods 2, the center deviation of the three or more wire feed guide rods is formed, and the formed wire is subjected to stress relief by a bending measure of passing back and forth through the wire feed guide rods 2 while being guided.

3. The former spiral antenna forming mode adopts a forming die to form, adopts one die and one piece to form and then is shaped by a heat treatment process, has long manufacturing period and high cost, and cannot realize batch and automatic production. For the P, L spiral antenna with lower frequency, the spiral radius, the thread pitch and the whole length are larger, and the gradually-changed spiral radius is added, so that the spiral antenna is easy to rebound when being separated from a mould, and the yield is low; the forming device can form formed wires with different diameters, the wire feeding mechanism can feed the wires through the friction force between the arc groove on the wire feeding wheel and the formed wires, and the forming mechanism can realize the forming of the spiral antenna with variable pitch and variable spiral radius covering P frequency band, L frequency band, S frequency band and C frequency band by adjusting the position relation among the spiral radius adjusting rod, the pitch adjusting rod and the forming support adjusting rod and designing the forming rod.

Drawings

FIG. 1 is a schematic view of the mechanism of the molding apparatus of the present invention.

Fig. 2 is a schematic structural diagram of the guiding mechanism, the straightening mechanism and the forming mechanism in fig. 1.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a partially enlarged view of fig. 2.

Fig. 5 is a partially enlarged view of fig. 3.

Fig. 6 is a view showing that a pair of straightening blocks are fixedly clamped by tightening pressing plates, elastic supports and pressing bolts.

Sequence numbers in the upper figure: the wire feeding device comprises a formed wire 1, a wire feeding guide rod 2, a wire feeding wheel 3, a straightening block 4, a power output shaft 5, a motor 6, a cross commutator 7, a forming support 8, a spiral radius adjusting rod 9, a pitch adjusting rod 10, a forming guide block 11, a nut end 12, a supporting adjusting rod 13, a locking screw 14, a rack 15, a supporting plate 16, a tightening clamp plate 17, a compression bolt 18, an elastic support 19 and a transmission rod 20.

Detailed Description

The invention will be further described by way of example with reference to the accompanying drawings.

Examples

Referring to fig. 1, a device for forming a helical antenna with a large pitch and a large length-diameter ratio comprises a frame 15, a guide mechanism, a wire feeding mechanism, a power mechanism, a straightening mechanism and a forming mechanism; the guiding mechanism, the wire feeding mechanism, the power mechanism, the straightening mechanism and the forming mechanism are all fixedly arranged on the frame 15.

Referring to fig. 2, the guiding mechanism comprises more than three wire feeding guiding rods 2, the more than three wire feeding guiding rods 2 are arranged in a staggered manner to form two parallel rows, and a central line is arranged between the two parallel rows of wire feeding guiding rods 2. More than three wire feed guide rods 2 are rotatably mounted on a support plate 16 of the frame 15.

The wire feeding guide rod 2 is a cylindrical rod, and a radial groove is formed in the cylindrical rod; the width of the groove is larger than the diameter of the formed wire, the depth of the groove is smaller than the diameter of the formed wire, and the center of the groove is consistent with the forming position; the wire feeding guide rod 2 realizes the stress removal of the formed wire while guiding.

Referring to fig. 2 and 3, the wire feeding mechanism comprises two pairs of wire feeding wheels 3, the two pairs of wire feeding wheels 3 are aligned with the central lines of the two rows of wire feeding guide rods 2, each pair of wire feeding wheels 3 are arranged up and down, and the wire feeding wheel 3 positioned above is a driving wheel; one pair of wire feeding wheels 3 is an input end, and the other pair of wire feeding wheels 3 is an output end. The spacing between the two wire feed rollers 3 is determined by the diameter of the wire 1 being formed and the forming force.

The radial middle part of the wire feeding wheel 3 is provided with an arc groove, and the width of the arc groove is smaller than the diameter of the molded wire; a wire passing space is formed between the arc grooves of the wire feeding wheels 3.

Referring to fig. 4, the power mechanism includes a motor 6 and a cross commutator 7. The motor 6 is a two-phase ac servo motor. The output shaft of the motor 6 is connected with the middle part of the cross-shaped commutator 7, two output ends of the cross-shaped commutator 7 are respectively connected with one end of the transmission rod 20, the other ends of the two transmission rods 20 are respectively connected with the two power output shafts 5 through a pair of bevel gear pairs, and the driving wheels in the two pairs of wire feeding wheels 3 are driven through the two power output shafts 5.

Referring to fig. 2 and 3, the straightening mechanism comprises a pair of straightening blocks 4, the straightening blocks 4 are parallel horizontal rods, and the straightening blocks 4 are positioned between the two pairs of wire feeding wheels 3 in a floating manner; the outlet of the pair of wire feeding wheels 3 at the output end is provided with a forming guide block 11, and the forming guide block 11 is in a horizontal rod shape and is in a horizontal straight line with the pair of straightening blocks 4.

V-shaped grooves are respectively arranged on the central lines of the opposite surfaces of the pair of straightening blocks 4, the width of each V-shaped groove is smaller than the diameter of the formed wire, and the two ends of each straightening block 4 are in a tip shape. The forming guide block 11 and the straightening block 4 have the same structure.

The pair of straightening blocks 4 and the forming guide block 11 provide position guide for forming the formed wire 1, and meanwhile, the upper and lower split design is adopted, referring to fig. 6, the pair of straightening blocks 4 are fixedly clamped by a tightening pressure plate 17, an elastic support 19 and a pressing bolt 18, provide straightening pressing force for the formed wire 1, straighten the formed wire 1 after stress removal, and provide position precision for the spiral radius adjusting rod 9 and the pitch forming adjusting rod 10 during forming.

The forming guide block 11 provides an accurate forming position of the formed wire 1 for the spiral radius adjusting rod 9 and the pitch adjusting rod 10, and ensures the accuracy of the forming position and the stability of the process.

Referring to fig. 5, the forming mechanism includes three adjusting mechanisms with the same structure, a spiral radius forming mechanism, a pitch forming mechanism and a support adjusting mechanism. The spiral radius forming mechanism comprises a forming support 8, a spiral radius adjusting rod 9 and a locking screw; the pitch forming mechanism comprises a forming support 8, a pitch adjusting rod 10 and a locking screw; the supporting and adjusting mechanism comprises a forming support 8, a supporting and adjusting rod 13 and a locking screw; the rod end of the spiral radius adjusting rod 9, the rod end of the pitch adjusting rod 10 and the rod end of the support adjusting rod 13 are relatively radial. The forming support 8 of the three adjusting mechanisms has the same structure, and the forming support 8 is fixed on a support plate 16 through a support mounting screw 14.

The spiral radius adjusting rod 9 of the spiral radius forming mechanism is a screw rod and penetrates through the forming support 8 through thread fit, and the forming support 8 is fixed on the rack 15 to provide forming supporting force. The nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod. The extension and contraction of the spiral radius adjusting rod 9 are realized by operating the nut end 12 of the spiral radius adjusting rod 9, the forming position of the spiral radius adjusting rod 9 is adjusted by screwing the spiral radius adjusting rod into the forming wheel support 8, and the working length is locked by the locking screw 14. The working end of the spiral radius adjusting rod 9 is a circular arc end. The screw 12 is screwed into the forming wheel support 8 to adjust the forming position of the spiral radius forming wheel 9. The spiral radius adjusting rod 9 directly forms the shape of the spiral antenna, and the spiral antennas with different spiral radii can be formed.

The screw pitch adjusting rod 10 of the screw pitch forming mechanism is a screw rod and penetrates through the forming support 8 through thread fit, the nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod; the telescopic adjustment of the pitch adjusting rod 10 is realized by operating the nut end of the pitch adjusting rod 10, the forming position of the pitch adjusting rod 10 is adjusted by screwing the depth of the forming wheel support 8, and the working length is locked by the locking screw 14. The working end of the pitch adjusting rod 10 is a circular arc end. The pitch adjusting rod 10 directly forms the pitch of the helical antenna, and the helical antenna with different pitches can be formed.

The support adjusting rod 13 of the support adjusting mechanism is a screw rod and penetrates through the forming support 8 in a threaded fit manner, the nut end and the working end of the screw rod are respectively positioned outside the forming support 8, and a locking screw 14 is arranged on the forming support 8 vertical to the screw rod; the support adjusting rod 13 is stretched and contracted by operating the nut end 12 of the support adjusting rod 13, and the working length is locked by a locking screw; the working end of the support adjusting rod 13 is a circular arc end.

The formed wire 1 is a raw material of a helical antenna, and its diameter and shape are determined according to design requirements.

When the device works, the formed wire 1 enters from the guide mechanism and rotates together with the formed wire 1 through the wire feeding guide wheel 2, so that the formed wire 1 is subjected to stress relief and straightening; the formed wire 1 is pushed to a forming mechanism through a power output shaft 5 and a straightening block 4, and is wound into a spiral helical antenna under the action of a radial helical radius adjusting rod 9, a radial pitch adjusting rod 10 and a support adjusting rod 13 of the forming mechanism.