Metal wire tension adjusting device and method

Abstract

The invention relates to a metal wire tension adjusting device and method, and belongs to the field of spaceflight initiating explosive devices, and the metal wire tension adjusting device comprises an alignment assembly and an adjusting assembly. The annular bottom plate, the annular guide rail, the annular sliding block, the linear bottom plate, the linear guide rail, the linear sliding block and the support base form an alignment assembly of the tension adjusting device. The square tube bearing seat, the deep groove ball bearing, the adjusting nut, the screw rod, the tension meter seat, the locking nut and the tension meter form an adjusting assembly of the tension adjusting device. Before adjustment, the tension meter is moved to the position over the metal wire through the alignment assembly to be connected with the metal wire; during adjustment, the adjusting nut is rotated to adjust the tensile force of the metal wire; and after the tensile force is adjusted in place, a locking nut on the metal wire is fixed, so that the metal wire with certain tensile force can be obtained. The device is suitable for adjusting the tension of the metal wire in the metal wire embedded composite solid propellant grain.

Description

Technical Field

[0001] This invention belongs to the field of aerospace pyrotechnics, specifically relating to a metal wire tension adjustment device and method. Background Technology

[0002] In the field of aerospace pyrotechnics, metal wires embedded within propellants need to be pre-installed at specific positions on the encapsulation mold. These wires must remain straight and free from bending or deformation during propellant pouring and curing. Conventional wire tension can only be adjusted by feel, which has drawbacks such as unquantifiable tension, inconsistent tension, easy breakage during assembly, and bending or deformation due to insufficient tension during propellant pouring and curing. Therefore, it is necessary to maintain a certain tension to ensure the wires remain taut, maintaining their straightness during propellant pouring and resisting internal stresses generated within the propellant during curing to prevent deformation. Summary of the Invention

[0003] The purpose of this invention is to provide a metal wire tension adjustment device and method, which quantifies the metal wire tension, controls the tension during the metal wire adjustment process, reduces the risk of metal wire bending or breakage, and achieves improved consistency of metal wire tension.

[0004] The above-mentioned objectives of the present invention are mainly achieved through the following technical solutions:

[0005] A wire tension adjustment device includes an annular base plate, an annular guide rail, an annular slider, a linear base plate, a linear guide rail, a linear slider, a support base, a square tube bearing seat, a screw, a tension gauge seat, and a tension gauge.

[0006] The annular guide rail is fixed to the annular base plate, two annular sliders are set on the annular guide rail, a linear base plate is mounted on the annular sliders, the linear guide rail is fixed on the linear base plate, the linear sliders are installed on the linear guide rail, the bracket base is connected to the linear sliders, the square tube bearing seat is set on the bracket base, the tension gauge seat is connected to the square tube bearing seat through a screw, and the tension gauge is set on the tension gauge seat.

[0007] It also includes a deep groove ball bearing and an adjusting nut. The screw includes a large thread section and a small thread section. The adjusting nut is set on the large thread section of the screw. The end of the adjusting nut is installed on the inner ring of the deep groove ball bearing by interference fit. The vertical height of the tension gauge seat is adjusted by adjusting the adjusting nut. The deep groove ball bearing is installed on the square tube bearing seat by interference fit.

[0008] It also includes a locking nut, the tension gauge seat is installed on the small thread section of the screw and is fastened by the locking nut; a fixed square head is welded to the screw and placed in the square tube of the square tube bearing seat.

[0009] The dimensions of the fixed square head are 21-23mm × 21-23mm × 4-6mm.

[0010] The deep groove ball bearing is a 61802 deep groove ball bearing, and the screw (11) is an M8×73mm cylindrical screw.

[0011] The adjusting nut has a maximum outer diameter of 30-32 mm and a height of 24-26 mm, with an M8 threaded through hole in the center.

[0012] The diameter of the annular base plate is 360-370mm, and the length of the linear guide rail (5) is 390-400mm.

[0013] The total height of the device is 262-304mm, and the length of the metal wire can be adjusted from 0 to 42mm.

[0014] A method for adjusting the tension of a metal wire, using the aforementioned adjusting device, specifically includes the following steps:

[0015] (1) Place the annular base plate on the upper end of the covering sleeve mold with the metal wire threaded on it, and adjust the position of the annular slider (3) and the linear slider so that the tension gauge fixing clamp is located above the metal wire.

[0016] (2) Move the tension gauge seat downwards, so that the tension gauge clamp is located at the head of the fixing screw on the metal wire;

[0017] (3) The clamp of the tension gauge holds the head of the fixing screw on the metal wire and moves the tension gauge seat upward;

[0018] (4) Observe the tension reading on the tension gauge and adjust the tension of the metal wire to the required value;

[0019] (5) After the tension of the metal wire reaches the required value, tighten the lock nut on the metal wire until the reading of the tension gauge returns to zero.

[0020] (6) Loosen the tension gauge clamp to obtain a metal wire with a certain tension.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] (1) The present invention enables the tension gauge to move freely within a certain circular range by means of the ring guide rail slider and the linear guide rail slider, thereby improving the stability and efficiency of the tension gauge. After the metal wire tension adjustment device is placed, the tension of multiple metal wires can be adjusted one by one.

[0023] (2) This invention solves the problems of conventional wire tension adjustment, which relies solely on feel and suffers from issues such as unquantifiable tension, poor wire tension consistency, and easy bending or stretching during assembly. The wire tension adjustment device and method provided by this invention enable quantitative display of wire tension, control of wire tension, reduced rework rate during assembly, and significantly improved assembly efficiency and wire tension consistency. Attached Figure Description

[0024] Figure 1 This is a top view of the alignment component of the present invention;

[0025] Figure 2 This is a cross-sectional view of the adjustment component of the present invention;

[0026] Figure 3 This is a cross-sectional view of the adjusting device of the present invention. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0028] like Figure 3 As shown, a metal wire tension adjustment device includes an annular base plate 1, an annular guide rail 2, an annular slider 3, a linear base plate 4, a linear guide rail 5, a linear slider 6, a bracket base 7, a square tube bearing seat 8, a screw 11, a tension gauge seat 12, and a tension gauge 14.

[0029] like Figure 1 As shown, the annular guide rail 2 is fixed on the annular base plate 1, two annular sliders 3 are set on the annular guide rail 2, a linear base plate 4 is mounted on the annular sliders 3, the linear guide rail 5 is fixed on the linear base plate 4, the linear slider 6 is installed on the linear guide rail 5, and the bracket base 7 is connected to the linear slider 6.

[0030] like Figure 2 As shown, the square tube bearing seat 8 is mounted on the bracket base 7, and the tension gauge seat 12 is mounted on the square tube bearing seat 8 via a screw 11. The tension gauge 14 is mounted on the tension gauge seat 12.

[0031] It also includes a deep groove ball bearing 9 and an adjusting nut 10. The screw 11 includes a large thread section and a small thread section. The adjusting nut 10 is set on the large thread section of the screw 11. The end of the adjusting nut 10 is installed on the inner ring of the deep groove ball bearing 9 by interference fit. The vertical height of the tension gauge seat 12 is adjusted by adjusting the adjusting nut 10. The deep groove ball bearing 9 is installed on the square tube bearing seat 8 by interference fit.

[0032] It also includes a locking nut 13, the tension gauge seat 12 is installed on the small thread section of the screw 11 and is fastened by the locking nut 13; a fixed square head is welded on the screw 11 and placed in the square tube of the square tube bearing seat 8.

[0033] The dimensions of the fixed square head are 21-23mm × 21-23mm × 4-6mm.

[0034] The deep groove ball bearing 9 is a 61802 deep groove ball bearing, and the screw 11 is an M8×73mm cylindrical screw.

[0035] The adjusting nut 10 has a maximum outer diameter of 30-32 mm and a height of 24-26 mm, with an M8 threaded through hole in the center.

[0036] The diameter of the annular base plate 1 is 360-370mm, and the length of the linear guide rail 5 is 390-400mm.

[0037] The total height of the device is 262-304mm, and the length of the metal wire can be adjusted from 0 to 42mm.

[0038] A method for adjusting the tension of a metal wire includes the following steps:

[0039] 1. Place the annular base plate 1 on the upper end of the covering sleeve mold with the metal wire threaded on it, and adjust the position of the annular slider 3 and the linear slider 6 so that the tension gauge 14 fixing clamp is located above the metal wire.

[0040] 2. Move the tension gauge base 12 downwards, causing the fixing clamp of the tension gauge 14 to be positioned at the head of the fixing screw on the metal wire;

[0041] 3. The fixing clamp of the tension gauge 14 holds the head of the fixing screw on the metal wire, and the tension gauge base 12 is moved upward;

[0042] 4. Observe the tension reading on tension gauge 14 and adjust the wire tension to the required value;

[0043] 5. After the wire tension reaches the required value, tighten the locking nut on the wire until the reading on tension gauge 14 returns to zero;

[0044] 6. Loosen the clamp of tension gauge 14 to obtain a metal wire with a certain tension.

[0045] The above description is only the best specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the protection scope of the present invention.

[0046] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A wire tension adjustment device, characterized in that: It includes an annular base plate (1), an annular guide rail (2), an annular slider (3), a linear base plate (4), a linear guide rail (5), a linear slider (6), a bracket base (7), a square tube bearing seat (8), a screw (11), a tension gauge seat (12), and a tension gauge (14); Among them, the annular guide rail (2) is fixed on the annular base plate (1), two annular sliders (3) are set on the annular guide rail (2), a linear base plate (4) is mounted on the annular sliders (3), the linear guide rail (5) is fixed on the linear base plate (4), the linear slider (6) is installed on the linear guide rail (5), the bracket base (7) is connected to the linear slider (6), the square tube bearing seat (8) is set on the bracket base (7), the tension gauge seat (12) is connected to the square tube bearing seat (8) through the screw (11), and the tension gauge (14) is set on the tension gauge seat (12).

2. The wire tension adjusting device according to claim 1, characterized in that: It also includes a deep groove ball bearing (9) and an adjusting nut (10). The screw (11) includes a large thread section and a small thread section. The adjusting nut (10) is set on the large thread section of the screw (11). The end of the adjusting nut (10) is installed on the inner ring of the deep groove ball bearing (9) by interference fit. The vertical height of the tension gauge seat (12) is adjusted by adjusting the adjusting nut (10). The deep groove ball bearing (9) is installed on the square tube bearing seat (8) by interference fit.

3. The wire tension adjusting device according to claim 2, characterized in that: It also includes a locking nut (13), the tension gauge seat (12) is installed on the small thread section of the screw (11) and fastened by the locking nut (13); a fixed square head is welded on the screw (11) and placed in the square tube of the square tube bearing seat (8).

4. The wire tension adjusting device according to claim 3, characterized in that: The dimensions of the fixed square head are 21-23mm × 21-23mm × 4-6mm.

5. The wire tension adjusting device according to claim 2, characterized in that: The deep groove ball bearing (9) is a 61802 deep groove ball bearing, and the screw (11) is an M8×73mm cylindrical screw.

6. The wire tension adjusting device according to claim 2, characterized in that: The adjusting nut (10) has a maximum outer diameter of 30-32 mm and a height of 24-26 mm, with an M8 threaded through hole in the center.

7. The wire tension adjusting device according to claim 1, characterized in that: The diameter of the annular base plate (1) is 360-370 mm, and the length of the linear guide rail (5) is 390-400 mm.

8. The wire tension adjusting device according to claim 1, characterized in that: The total height of the device is 262-304mm, and the length of the metal wire can be adjusted from 0 to 42mm.

9. A method for adjusting the tension of a metal wire, characterized in that: Adjustment using the adjusting device according to any one of claims 1 to 8 specifically includes the following steps: (1) Place the annular base plate (1) on the upper end of the covering sleeve mold with the metal wire threaded on it, and adjust the position of the annular slider (3) and the linear slider (6) so that the tension gauge (14) fixing clamp is located above the metal wire. (2) Move the tension gauge seat (12) downwards, so that the fixing clamp of the tension gauge (14) is located at the head of the fixing screw on the metal wire; (3) The fixing clamp of the tension gauge (14) holds the head of the fixing screw on the metal wire and moves the tension gauge seat (12) upward; (4) Observe the tension reading on the tension gauge (14) and adjust the tension of the metal wire to the required value; (5) After the tension of the metal wire reaches the required value, fix the locking nut on the metal wire until the reading of the tension gauge (14) returns to zero; (6) Loosen the clamp of the tension gauge (14) to obtain a metal wire with a certain tension.

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