Violin string uniformity measuring device

Abstract

The utility model relates to the field of measuring devices, in particular to a violin string uniformity measuring device, which comprises a bottom plate and a string finished product. Supporting blocks are fixedly connected to the left and right edges of the upper end of the bottom plate. The clamping mechanism is started to clamp the outer wall of one end of a string finished product, the other end of the string finished product is straightened by the straightening assembly, then the braking assembly is started to drive the first gear ring and the second gear ring to rotate, and the string finished product is moved to the position above the distance measuring assembly. Third electric cylinders are started to enable auxiliary blocks to move upwards along the inner walls of limiting grooves, a finished string is located in a gap between the two auxiliary blocks, a measuring ruler is inserted into the inner walls of two third U-shaped blocks, the thickness of the finished string can be observed with naked eyes, then a rodless air cylinder is started to move a second fixing frame, and the finished string can be measured. A plurality of point positions on the side wall of the string finished product are sampled, and the next clamped string finished product can be moved to the distance measuring assembly for rapid distance measurement by starting the braking assembly.

Description

Technical Field

[0001] The utility model belongs to the field of measuring devices, and in particular relates to a violin string uniformity measuring device. Background Art

[0002] The violin is a highly technical instrument. After the strings are produced and processed, the thickness and uniformity of the strings usually need to be measured to avoid intonation problems caused by uneven string thickness, which affects the performer's performance.

[0003] At present, measuring tools are usually used to measure the thickness of multiple points on a string. By sampling and measuring, the uniformity of the string can be quickly detected. However, when using the string uniformity measuring equipment in the prior art, it is usually difficult to quickly straighten and fix the string. There is a lack of a multi-station string clamping mechanism, which makes it inconvenient to quickly move the fixed string to the distance measuring mechanism for distance measurement, and further improvement is needed.

[0004] Therefore, a violin string uniformity measuring device is proposed, which can quickly straighten and fix the strings. It has a multi-position string clamping mechanism, which is convenient for quickly moving the fixed strings to the distance measuring mechanism for distance measurement. Utility Model Content

[0005] In order to overcome the problem that the string uniformity measuring equipment in the prior art is usually difficult to straighten and fix the strings quickly when in use, lacks a multi-position string clamping mechanism, and is inconvenient to quickly move the fixed strings to the distance measuring mechanism for distance measurement, a violin string uniformity measuring device is proposed.

[0006] The technical scheme of the utility model is as follows: a violin string uniformity measuring device comprises a bottom plate and a finished string product; support blocks are fixedly connected to the left and right edges of the upper end of the bottom plate, a roller is rotatably installed between the two support blocks, a first bracket is fixedly connected to the left edge of the roller near the side wall of the roller, a first toothed ring is fixedly connected to the end of the first bracket away from the roller, a second bracket is fixedly connected to the right edge of the roller near the side wall of the roller, a second toothed ring is fixedly connected to the end of the second bracket away from the roller, a brake assembly for rotating the first toothed ring and the second toothed ring is provided at the upper end of the bottom plate, a uniformly distributed clamping mechanism is provided at the left end of the first toothed ring, a uniformly distributed straightening assembly is provided at the right end of the second toothed ring, a distance measuring assembly for measuring the diameter of the finished string product is commonly provided at the upper ends of the two support blocks, uniformly distributed first jacks are penetrated through the left and right ends of the first toothed ring, uniformly distributed second jacks are penetrated through the left and right ends of the second toothed ring, a uniformly distributed first positioning piece is fixedly connected to the right end of the first toothed ring, and a uniformly distributed second positioning piece is fixedly connected to the left end of the second toothed ring;

[0007] The distance measuring component includes a bearing block, a first fixed frame, a rodless cylinder, a second fixed frame, a third electric cylinder, a limit groove, an auxiliary block, a third U-shaped block, a measuring ruler, a U-shaped plate and a camera; the upper ends of the two support blocks are fixedly connected to the bearing blocks, the upper ends of the two bearing blocks are commonly fixedly connected to the first fixed frame, the left and right ends of the inner wall of the first fixed frame are fixedly connected to the horizontally arranged rodless cylinder, the side end of the moving end of the rodless cylinder is fixedly connected to the vertically arranged second fixed frame, the two sides of the inner wall of the second fixed frame are fixedly connected to the third electric cylinder, and the Two limit grooves are provided through the upper ends of the two fixed frames, and auxiliary blocks are slidably provided on the inner walls of the limit grooves. The upper end of the output shaft of the third electric cylinder is fixedly connected to the lower end of the auxiliary block, and the upper parts of the side walls of the two auxiliary blocks are fixedly connected to third U-shaped blocks, and measuring rulers are slidably provided on the inner walls of the two third U-shaped blocks. A U-shaped plate is commonly fixedly connected to one end of the two third U-shaped blocks away from the auxiliary blocks, and the opening of the U-shaped plate faces the second fixed frame. A camera is fixedly connected to the inner wall of the U-shaped plate, and the lower half of the camera end of the camera faces the scale of the upper half of the measuring ruler.

[0008] Preferably, when in use, the finished string is passed through the first insertion hole and the second insertion hole, and the finished string is also positioned by the first positioning member and the second positioning member, and then the clamping mechanism is turned on to clamp the outer wall of one end of the finished string, and the other end of the finished string is straightened by the straightening assembly, and then the brake assembly is turned on to drive the first gear ring and the second gear ring to rotate, so that the finished string is moved above the distance measuring assembly, and then the rodless cylinder is turned on to adjust the position of the second fixed frame, and the third electric cylinder is turned on to make the auxiliary block move upward along the inner wall of the limit groove, and the finished string will be located in the gap between the two auxiliary blocks, and the measuring ruler is inserted into the inner wall of the two third U-shaped blocks, so that the finished string can be observed with the naked eye. The thickness of the finished string can also be measured by turning on the camera, using the camera to record the measuring ruler and the finished string, connecting the camera to a mobile phone or a display device to determine the diameter of the finished string, and then turning on the rodless cylinder to move the second fixed frame to sample multiple points on the side wall of the finished string. When a finished string is detected, the next clamped finished string can be moved to the distance measuring component for rapid distance measurement by turning on the brake component, thereby solving the problem that the string uniformity distance measuring device in the prior art is usually difficult to quickly straighten and fix the strings during use, lacks a multi-station string clamping mechanism, and is inconvenient to quickly move the fixed strings to the distance measuring mechanism for distance measurement.

[0009] Preferably, the distance measuring assembly is located inside the first gear ring and the second gear ring, and the outer contours of the front and rear ends of the first gear ring and the second gear ring are the same.

[0010] Preferably, the brake assembly includes a U-shaped seat, an external gear roller and a servo motor; the upper end of the base plate is fixedly connected to the U-shaped seat, the external gear rollers are rotatably mounted at both ends of the inner wall of the U-shaped seat, one end of the U-shaped seat is fixedly connected to the servo motor, the output shaft of the servo motor passes through the U-shaped seat and is fixedly connected to the front end of the external gear roller shaft, the outer wall of the external gear roller is meshed with the outer wall of the first gear ring, and the outer wall of the external gear roller is meshed with the outer wall of the second gear ring.

[0011] Preferably, the first positioning member includes two first limiting blocks, and the midpoint of a line connecting the centers of the two first limiting blocks is located on the central axis of the first plug hole.

[0012] Preferably, the second positioning member includes two second limiting blocks, the midpoint of the line connecting the centers of the two second limiting blocks is located on the central axis of the second plug hole, and the first plug hole corresponds to the second plug hole.

[0013] Preferably, the clamping mechanism includes a fixing block, a bolt and a clamping block; every two clamping mechanisms are symmetrical about the first socket, the left end of the first gear ring is fixedly connected to the fixing block, both ends of the fixing block are threadedly installed with bolts, and the end of the bolt close to the first socket is fixedly connected to the clamping block.

[0014] Preferably, the straightening assembly includes a first U-shaped block, a guide wheel, a first electric cylinder, a second U-shaped block, a through hole, a second electric cylinder and a clamping block; the first U-shaped block is fixedly connected to the right end of the second gear ring, guide wheels are rotatably installed on the inner walls of both sides of the first U-shaped block, the end of the first U-shaped block away from the second gear ring is fixedly connected to the first electric cylinder, the upper end of the output shaft of the first electric cylinder is fixedly connected to the second U-shaped block, a through hole is penetrated through the upper end of the second U-shaped block, the upper end of the second U-shaped block is fixedly connected to the second electric cylinder, the output shaft of the second electric cylinder passes through the upper end of the second U-shaped block and extends to the interior of the second U-shaped block, the opening of the second U-shaped block faces the end away from the first U-shaped block, and the lower end of the output shaft of the second electric cylinder is fixedly connected to the clamping block.

[0015] The beneficial effects of the utility model are as follows: the finished string is passed through the first insertion hole and the second insertion hole, the finished string is also positioned by the first positioning member and the second positioning member, and then the clamping mechanism is turned on to clamp the outer wall of one end of the finished string, and the other end of the finished string is straightened by the straightening assembly, and then the brake assembly is turned on to drive the first gear ring and the second gear ring to rotate, so that the finished string is moved above the distance measuring assembly, and then the rodless cylinder is turned on to adjust the position of the second fixed frame, and the third electric cylinder is turned on to make the auxiliary block move upward along the inner wall of the limit groove, so that the finished string will be located in the gap between the two auxiliary blocks, and the measuring ruler is inserted into the inner wall of the two third U-shaped blocks, and the string can be observed with the naked eye. The thickness of the finished string can also be determined by turning on the camera, using the camera to record the measuring ruler and the finished string, connecting the camera to a mobile phone or display device, judging the diameter of the finished string, and then turning on the rodless cylinder to move the second fixed frame, sampling multiple points on the side wall of the finished string. When one finished string is detected, the next clamped finished string can be moved to the distance measuring assembly for rapid distance measurement by turning on the brake assembly, thereby solving the problem that the string uniformity distance measuring device in the prior art is usually difficult to quickly straighten and fix the strings when in use, lacks a multi-station string clamping mechanism, and is inconvenient to quickly move the fixed strings to the distance measuring mechanism for distance measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a three-dimensional structural schematic diagram of a violin string uniformity measuring device of the utility model;

[0017] Figure 2 What is shown is a three-dimensional structural schematic diagram of the distance measuring component of the violin string uniformity measuring device of the utility model;

[0018] Figure 3 The violin string uniformity measuring device of the utility model is shown. Figure 2 A schematic diagram of the three-dimensional structure with a partial enlargement at point A in the middle;

[0019] Figure 4 What is shown is a schematic diagram of the three-dimensional structure of the second jack of the violin string uniformity measuring device of the utility model;

[0020] Figure 5 What is shown is a three-dimensional structural schematic diagram of the clamping mechanism of the violin string uniformity measuring device of the utility model;

[0021] Figure 6 What is shown is a schematic diagram of the three-dimensional structure of the first limit block of the violin string uniformity measuring device of the utility model;

[0022] Figure 7 What is shown is a three-dimensional structural schematic diagram of the straightening component of the violin string uniformity measuring device of the present invention.

[0023] The marks in the attached drawings are: 1, bottom plate; 2, brake assembly; 201, U-shaped seat; 202, outer gear roller; 203, servo motor; 3, support block; 4, roller; 5, first gear ring; 6, second gear ring; 7, clamping mechanism; 701, fixing block; 702, bolt; 703, clamping block; 8, straightening assembly; 801, first U-shaped block; 802, guide wheel; 803, first electric cylinder; 804, second U-shaped block; 805, through hole; 806, second electric cylinder; 807, Clamping block; 9, distance measuring assembly; 901, bearing block; 902, first fixed frame; 903, rodless cylinder; 904, second fixed frame; 905, third electric cylinder; 906, limit groove; 907, auxiliary block; 908, third U-shaped block; 909, measuring ruler; 910, U-shaped plate; 911, camera; 10, first bracket; 11, second bracket; 12, finished string; 13, first socket; 14, second socket; 15, first limit block; 16, second limit block. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 7 The utility model provides an embodiment: a violin string uniformity measuring device, comprising a bottom plate 1 and a finished string product 12; support blocks 3 are fixedly connected to the left and right edges of the upper end of the bottom plate 1, a roller 4 is rotatably installed between the two support blocks 3, a first bracket 10 is fixedly connected to the left edge of the side wall of the roller 4 near the roller 4, a first toothed ring 5 is fixedly connected to the end of the first bracket 10 away from the roller 4, a second bracket 11 is fixedly connected to the right edge of the side wall of the roller 4 near the roller 4, a second toothed ring 6 is fixedly connected to the end of the second bracket 11 away from the roller 4, and the upper end of the bottom plate 1 is provided with a device for measuring the uniformity of the first toothed ring 5. A brake assembly 2 is provided for rotating with the second gear ring 6, a clamping mechanism 7 is evenly distributed at the left end of the first gear ring 5, a straightening assembly 8 is evenly distributed at the right end of the second gear ring 6, a distance measuring assembly 9 for measuring the diameter of the finished string 12 is provided at the upper ends of the two support blocks 3, evenly distributed first plug holes 13 are provided through the left and right ends of the first gear ring 5, evenly distributed second plug holes 14 are provided through the left and right ends of the second gear ring 6, evenly distributed first positioning members are fixedly connected to the right end of the first gear ring 5, and evenly distributed second positioning members are fixedly connected to the left end of the second gear ring 6;

[0026] The distance measuring assembly 9 includes a bearing block 901, a first fixed frame 902, a rodless cylinder 903, a second fixed frame 904, a third electric cylinder 905, a limit groove 906, an auxiliary block 907, a third U-shaped block 908, a measuring ruler 909, a U-shaped plate 910 and a camera 911; the upper ends of the two support blocks 3 are fixedly connected to the bearing blocks 901, the upper ends of the two bearing blocks 901 are commonly fixedly connected to the first fixed frame 902, the left and right ends of the inner wall of the first fixed frame 902 are fixedly connected to the horizontally arranged rodless cylinder 903, the side end of the moving end of the rodless cylinder 903 is fixedly connected to the vertically arranged second fixed frame 904, and the two sides of the inner wall of the second fixed frame 904 are fixedly connected to the third electric cylinder 905 Two limiting grooves 906 are provided through the upper end of the second fixed frame 904, and an auxiliary block 907 is slidably provided on the inner wall of the limiting groove 906. The upper end of the output shaft of the third electric cylinder 905 is fixedly connected to the lower end of the auxiliary block 907. The upper parts of the side walls of the two auxiliary blocks 907 are fixedly connected to third U-shaped blocks 908. The inner walls of the two third U-shaped blocks 908 are slidably provided with measuring rulers 909. The ends of the two third U-shaped blocks 908 away from the auxiliary blocks 907 are commonly fixedly connected to a U-shaped plate 910, and the opening of the U-shaped plate 910 faces the second fixed frame 904. A camera 911 is fixedly connected to the inner wall of the U-shaped plate 910, and the lower half of the camera end of the camera 911 faces the scale of the upper half of the measuring ruler 909.

[0027] When in use, the finished string 12 is passed through the first insertion hole 13 and the second insertion hole 14, and the finished string 12 is also positioned by the first positioning member and the second positioning member, and then the clamping mechanism 7 is opened to clamp the outer wall of one end of the finished string 12, and the other end of the finished string 12 is straightened by the straightening assembly 8, and then the brake assembly 2 is opened to drive the first gear ring 5 and the second gear ring 6 to rotate, so that the finished string 12 is moved above the distance measuring assembly 9, and then the rodless cylinder 903 is opened to adjust the position of the second fixing frame 904, and the third electric cylinder 905 is opened to make the auxiliary block 907 move upward along the inner wall of the limiting groove 906, and the finished string 12 will be located between the two auxiliary blocks. 907, insert the measuring ruler 909 into the inner wall of the two third U-shaped blocks 908, and observe the thickness of the finished string 12 with naked eyes, or turn on the camera 911, and use the camera 911 to record the measuring ruler 909 and the finished string 12, connect the camera 911 to a mobile phone or a display device, and judge the diameter of the finished string 12, then turn on the rodless cylinder 903 to move the second fixed frame 904, and sample multiple points on the side wall of the finished string 12. When one finished string 12 is detected, the next clamped finished string 12 can be moved to the distance measuring component 9 for rapid distance measurement by turning on the brake component 2.

[0028] See also Figure 1-Figure 3In this embodiment, the distance measuring component 9 is located inside the first gear ring 5 and the second gear ring 6. The outer contours of the front and rear ends of the first gear ring 5 and the second gear ring 6 are the same, and the distance measuring component 9 will not cause any obstruction to the movement of the first gear ring 5 and the second gear ring 6.

[0029] See also Figure 1 and Figure 2 In this embodiment, the brake assembly 2 includes a U-shaped seat 201, an outer gear roller 202 and a servo motor 203; the upper end of the base plate 1 is fixedly connected to the U-shaped seat 201, and the outer gear rollers 202 are rotatably installed at both ends of the inner wall of the U-shaped seat 201. The servo motor 203 is fixedly connected to one end of the U-shaped seat 201, and the output shaft of the servo motor 203 passes through the U-shaped seat 201 and is fixedly connected to the front end of the rotating shaft of the outer gear roller 202. The outer wall of the outer gear roller 202 is meshed with the outer wall of the first gear ring 5, and the outer wall of the outer gear roller 202 is meshed with the outer wall of the second gear ring 6. When in use, the servo motor 203 is turned on to rotate the outer gear roller 202, and the outer gear roller 202 can be rotated, thereby driving the first gear ring 5 and the second gear ring 6 to rotate.

[0030] See also Figure 1 and Figure 6 In this embodiment, the first positioning member includes two first limiting blocks 15, the midpoint of the center line of the two first limiting blocks 15 is located on the central axis of the first plug hole 13, and when the finished string 12 passes through the first plug hole 13 and the two first limiting blocks 15, it can be limited by the two first limiting blocks 15.

[0031] See also Figure 1 and Figure 4 In this embodiment, the second positioning member includes two second limit blocks 16, the midpoint of the center line of the two second limit blocks 16 is located on the central axis of the second hole 14, the first hole 13 and the second hole 14 correspond to each other, and when the finished string 12 passes through the second hole 14 and the two second limit blocks 16, it can be limited by the two second limit blocks 16.

[0032] See also Figure 1 and Figure 5 In this embodiment, the clamping mechanism 7 includes a fixing block 701, a bolt 702 and a clamping block 703; every two clamping mechanisms 7 are symmetrical with respect to the first insertion hole 13, the left end of the first gear ring 5 is fixedly connected to the fixing block 701, both ends of the fixing block 701 are threadedly installed with bolts 702, and one end of the bolt 702 close to the first insertion hole 13 is fixedly connected to the clamping block 703, and the bolt 702 is manually rotated to move the clamping block 703 toward the first insertion hole 13, and the two clamping blocks 703 can be used to clamp and fix the strings.

[0033] See also Figure 1 and Figure 7In this embodiment, the straightening assembly 8 includes a first U-shaped block 801, a guide wheel 802, a first electric cylinder 803, a second U-shaped block 804, a through hole 805, a second electric cylinder 806 and a pressing block 807; the right end of the second gear ring 6 is fixedly connected to the first U-shaped block 801, and the guide wheels 802 are rotatably installed on the inner walls of both sides of the first U-shaped block 801. The end of the first U-shaped block 801 away from the second gear ring 6 is fixedly connected to the first electric cylinder 803, and the upper end of the output shaft of the first electric cylinder 803 is fixedly connected to the second U-shaped block 804. The upper end of the second U-shaped block 804 is penetrated by a through hole 805, and the upper end of the second U-shaped block 804 is fixedly connected to the second electric cylinder 806. The output shaft passes through the upper end of the second U-shaped block 804 and extends to the interior of the second U-shaped block 804. The opening of the second U-shaped block 804 faces the end away from the first U-shaped block 801. The lower end of the output shaft of the second electric cylinder 806 is fixedly connected with a clamping block 807. The finished string 12 is placed in the recessed part of the second U-shaped block 804 away from the end of the second electric cylinder 806 through the guide wheel 802 and the through hole 805. The second electric cylinder 806 is turned on so that the clamping block 807 squeezes and fixes the other end of the finished string 12 on the inner wall of the second U-shaped block 804. Then, the first electric cylinder 803 is turned on so that the second U-shaped block 804 moves toward the first electric cylinder 803, so that the finished string 12 can be quickly straightened.

[0034] Working principle: First, the finished string 12 is passed through the first hole 13 and the second hole 14. When the finished string 12 passes through the first hole 13 and between the two first limit blocks 15, it can be limited by the two first limit blocks 15. When the finished string 12 passes through the second hole 14 and between the two second limit blocks 16, it can be limited by the two second limit blocks 16.

[0035] Then, the bolt 702 is manually rotated to move the clamping block 703 toward the first insertion hole 13, and the two clamping blocks 703 are used to clamp and fix the side wall of one end of the finished string 12;

[0036] The other end of the finished string 12 is placed at one end of the second U-shaped block 804 recessed away from the second electric cylinder 806 through the guide wheel 802 and the through hole 805, and the second electric cylinder 806 is turned on so that the pressing block 807 squeezes and fixes the other end of the finished string 12 on the inner wall of the second U-shaped block 804, thereby achieving the squeezing and fixing of the other end of the finished string 12, and then the first electric cylinder 803 is turned on so that the second U-shaped block 804 moves toward the first electric cylinder 803, so that the finished string 12 can be quickly straightened;

[0037] The servo motor 203 is turned on to rotate the outer gear roller 202, driving the first gear ring 5 and the second gear ring 6 to rotate, so that the finished string product 12 is moved to the top of the distance measuring assembly 9, and then the rodless cylinder 903 is turned on to adjust the position of the second fixing frame 904, and the third electric cylinder 905 is turned on to make the auxiliary block 907 move upward along the inner wall of the limiting groove 906, so that the finished string product 12 is located in the gap between the two auxiliary blocks 907;

[0038] At this time, the measuring ruler 909 is inserted into the inner wall of the two third U-shaped blocks 908, and the thickness of the finished string 12 can be observed with naked eyes, or the camera 911 can be turned on to record the measuring ruler 909 and the finished string 12, and the camera 911 is connected to a mobile phone or a display device to determine the diameter of the finished string 12;

[0039] Then, the rodless cylinder 903 is turned on to move the second fixed frame 904 to sample multiple points on the side wall of the finished string product 12. When the inspection of a finished string product 12 is completed;

[0040] By opening the brake assembly 2, the next clamped finished string 12 can be moved to the distance measuring assembly 9 for rapid distance measurement.

[0041] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A violin string uniformity measuring device, comprising a base plate (1) and a finished string product (12); characterized in that: Support blocks (3) are fixedly connected to the left and right edges of the upper end of the bottom plate (1); a roller (4) is rotatably mounted between the two support blocks (3); a first bracket (10) is fixedly connected to the left edge of the side wall of the roller (4) near the roller (4); a first toothed ring (5) is fixedly connected to the end of the first bracket (10) away from the roller (4); a second bracket (11) is fixedly connected to the right edge of the side wall of the roller (4) near the roller (4); a second toothed ring (6) is fixedly connected to the end of the second bracket (11) away from the roller (4); and a brake assembly (20) for rotating the first toothed ring (5) and the second toothed ring (6) is provided at the upper end of the bottom plate (1). ), the left end of the first toothed ring (5) is provided with a uniformly distributed clamping mechanism (7), the right end of the second toothed ring (6) is provided with a uniformly distributed straightening assembly (8), the upper ends of the two support blocks (3) are jointly provided with a distance measuring assembly (9) for measuring the diameter of the finished string (12), the left and right ends of the first toothed ring (5) are penetrated with uniformly distributed first plug holes (13), the left and right ends of the second toothed ring (6) are penetrated with uniformly distributed second plug holes (14), the right end of the first toothed ring (5) is fixedly connected with a uniformly distributed first positioning piece, and the left end of the second toothed ring (6) is fixedly connected with a uniformly distributed second positioning piece; The distance measuring component (9) comprises a bearing block (901), a first fixed frame (902), a rodless cylinder (903), a second fixed frame (904), a third electric cylinder (905), a limit groove (906), an auxiliary block (907), a third U-shaped block (908), a measuring ruler (909), a U-shaped plate (910) and a camera (911); the upper ends of the two supporting blocks (3) are both fixedly connected to the bearing blocks (901), the upper ends of the two bearing blocks (901) are commonly fixedly connected to the first fixed frame (902), the left and right ends of the inner wall of the first fixed frame (902) are fixedly connected to the horizontally arranged rodless cylinder (903), the side end of the movable end of the rodless cylinder (903) is fixedly connected to the vertically arranged second fixed frame (904), and the inner wall of the second fixed frame (904) is fixedly connected to the third electric cylinder (911) on both sides. 05), two limiting grooves (906) are formed through the upper end of the second fixed frame (904), an auxiliary block (907) is slidably provided on the inner wall of the limiting groove (906), the upper end of the output shaft of the third electric cylinder (905) is fixedly connected to the lower end of the auxiliary block (907), the upper parts of the side walls of the two auxiliary blocks (907) are fixedly connected to third U-shaped blocks (908), the inner walls of the two third U-shaped blocks (908) are slidably provided with a measuring ruler (909), the ends of the two third U-shaped blocks (908) away from the auxiliary blocks (907) are commonly fixedly connected to a U-shaped plate (910), the opening of the U-shaped plate (910) faces the second fixed frame (904), the inner wall of the U-shaped plate (910) is fixedly connected to a camera (911), and the lower half of the camera end of the camera (911) is directly opposite to the scale of the upper half of the measuring ruler (909).

2. The violin string uniformity measuring device according to claim 1, characterized in that: The distance measuring assembly (9) is located inside the first gear ring (5) and the second gear ring (6), and the outer contours of the front and rear ends of the first gear ring (5) and the second gear ring (6) are the same.

3. The violin string uniformity measuring device according to claim 1, characterized in that: The brake assembly (2) comprises a U-shaped seat (201), an external gear roller (202) and a servo motor (203); the upper end of the bottom plate (1) is fixedly connected to the U-shaped seat (201), the external gear rollers (202) are rotatably mounted on both ends of the inner wall of the U-shaped seat (201), one end of the U-shaped seat (201) is fixedly connected to the servo motor (203), the output shaft of the servo motor (203) passes through the U-shaped seat (201) and is fixedly connected to the front end of the rotating shaft of the external gear roller (202), the outer wall of the external gear roller (202) is meshed with the outer wall of the first gear ring (5), and the outer wall of the external gear roller (202) is meshed with the outer wall of the second gear ring (6).

4. The violin string uniformity measuring device according to claim 1, characterized in that: The first positioning member comprises two first limiting blocks (15), and the midpoint of a line connecting the centers of the two first limiting blocks (15) is located on the central axis of the first insertion hole (13).

5. The violin string uniformity measuring device according to claim 1, characterized in that: The second positioning member comprises two second limiting blocks (16), the midpoint of a line connecting the centers of the two second limiting blocks (16) is located on the central axis of the second plug hole (14), and the first plug hole (13) corresponds to the second plug hole (14).

6. The violin string uniformity measuring device according to claim 3, characterized in that: The clamping mechanism (7) comprises a fixing block (701), a bolt (702) and a clamping block (703); each two clamping mechanisms (7) are symmetrical with respect to the first insertion hole (13); the left end of the first gear ring (5) is fixedly connected to the fixing block (701); bolts (702) are threadedly installed at both ends of the fixing block (701); and one end of the bolt (702) close to the first insertion hole (13) is fixedly connected to the clamping block (703).

7. The violin string uniformity measuring device according to claim 1, characterized in that: The straightening assembly (8) comprises a first U-shaped block (801), a guide wheel (802), a first electric cylinder (803), a second U-shaped block (804), a through hole (805), a second electric cylinder (806) and a pressing block (807); the first U-shaped block (801) is fixedly connected to the right end of the second gear ring (6); the guide wheels (802) are rotatably mounted on the inner walls of both sides of the first U-shaped block (801); the first electric cylinder (803) is fixedly connected to one end of the first U-shaped block (801) away from the second gear ring (6); The upper end of the output shaft is fixedly connected to a second U-shaped block (804); a through hole (805) is formed through the upper end of the second U-shaped block (804); a second electric cylinder (806) is fixedly connected to the upper end of the second U-shaped block (804); the output shaft of the second electric cylinder (806) passes through the upper end of the second U-shaped block (804) and extends to the interior of the second U-shaped block (804); the opening of the second U-shaped block (804) faces an end away from the first U-shaped block (801); and a clamping block (807) is fixedly connected to the lower end of the output shaft of the second electric cylinder (806).

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