Perforated rotary lead wire reducing device

Abstract

The invention discloses a perforating type rotary lead wire diameter reducing device, and belongs to the technical field of machining. Comprising a grinding mechanism; the grinding mechanism rotates through the driving component and comprises a connecting ring, a sleeve, a first connecting shaft, a second connecting shaft, an ejector pin, a gasket and a grinding cutter set. The first connecting shaft is coaxially connected with the connecting ring, and the other end of the first connecting shaft is connected with the second connecting shaft; the ejector pin is connected with the first connecting shaft and connected with the gasket, and the gasket is connected with a grinding cutter set with a through hole in the middle. A lead wire sequentially penetrates through the centers of the connecting ring, the first connecting shaft, the ejector pin, the gasket and the grinding cutter set. In addition, the device is further provided with a structure for adjusting the opening of the grinding cutter set so that adjustment of different grinding radiuses can be achieved. The method is suitable for multi-size reducing of various metals, and solves the problem that metal wires with extremely low tensile strength and poor fatigue resistance cannot be processed by a wire drawing die.

Description

Technical Field

[0001] This invention belongs to the field of machining technology and relates to grinding processing methods, specifically a perforated rotating lead wire diameter reduction device. Background Technology

[0002] With the continuous development of the aerospace industry, higher requirements have been placed on the sealing performance of launch platforms. O-rings, as a key component of launch platforms, ensure the reliable airtightness of the sealing surface. Lead wire, a commonly used material for O-rings, possesses good ductility and filling properties, allowing it to tightly conform to the sealing surface, effectively filling tiny gaps and significantly reducing the risk of leakage. It also exhibits excellent corrosion resistance and wear resistance. Currently, the technical requirements for a certain product specify 2.1mm diameter lead wire for the O-rings; however, the commercially available lead wire with a similar diameter is only 2.5mm. Therefore, the lead wire needs to be reduced in diameter. Since there is no equipment available for reducing the diameter of lead wire on the market, designing a highly reliable and easy-to-operate lead wire reduction device is becoming increasingly important.

[0003] Currently, the most common technique for reducing the diameter of lead wire is the drawing method, which involves forcibly pulling the metal wire through a drawing die with a tapered hole, using the die's squeezing action to reduce the diameter. However, lead wire itself has extremely low tensile strength and poor fatigue resistance, making it very easy to break when stretched using a drawing die. Grinding lead wires of different diameters requires custom-made drawing dies, resulting in poor versatility. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a perforated rotating lead wire reduction device; it is applicable to the reduction of diameter of various metals and sizes, and solves the problem that metal wires with extremely low tensile strength and poor fatigue resistance cannot be processed by drawing dies.

[0005] This invention is achieved through the following technical solution: A perforated rotary lead wire diameter reduction device includes a grinding mechanism. The grinding mechanism is rotated by a driving component and includes a connecting ring, a sleeve, a first connecting shaft, a second connecting shaft, a ejector pin, a washer, and a grinding tool assembly. One end of the first connecting shaft is coaxially connected to the connecting ring, and the other end of the first connecting shaft is connected to the second connecting shaft. The ejector pin is connected to the first connecting shaft, and the end of the ejector pin away from the first connecting shaft is connected to the washer. The washer is connected to a grinding tool assembly with a through hole in the middle. The end of the sleeve away from the connecting ring is connected to a hollow fixing bolt, which tightens the grinding tool assembly. The lead wire passes sequentially through the center of the connecting ring, the first connecting shaft, the ejector pin, the washer, the grinding tool assembly, and the fixing bolt.

[0006] A perforated rotary lead wire diameter reduction device includes a grinding mechanism. The grinding mechanism is rotated by a driving component and includes a connecting ring, a sleeve, a first connecting shaft, a second connecting shaft, a spring, a ejector pin, a washer, and a grinding tool assembly. One end of the first connecting shaft is coaxially connected to the connecting ring, and the other end of the first connecting shaft is connected to the second connecting shaft. The ejector pin is slidably connected to the first connecting shaft. One end of the spring is connected to the first connecting shaft, and the other end of the spring is connected to the ejector pin. The end of the ejector pin away from the spring is connected to the washer. An adjusting screw is connected to the end of the sleeve away from the connecting ring. The end of the adjusting screw located inside the sleeve abuts against the grinding tool assembly, and the end of the grinding tool assembly away from the adjusting screw abuts against the washer. The lead wire passes sequentially through the center of the connecting ring, the first connecting shaft, the ejector pin, the washer, the grinding tool assembly, and the adjusting screw.

[0007] Furthermore, the grinding tool set consists of three identical grinding tools with evenly distributed grinding teeth on the inner wall of the grinding tools, and the included angle between two adjacent grinding tools is 120°.

[0008] Furthermore, one end of the first connecting shaft is axially positioned by tightening the connecting ring with double nuts.

[0009] Furthermore, it also includes a transmission mechanism; the transmission mechanism is connected to the grinding mechanism and is connected to a motor.

[0010] Furthermore, the transmission mechanism includes a driving bevel gear, and the grinding mechanism also includes a driven bevel gear; the driven bevel gear meshes with the driving bevel gear.

[0011] Furthermore, the connecting ring is tightened against the driven bevel gear by double nuts.

[0012] Furthermore, it also includes a positioning mechanism, on which the transmission mechanism and the grinding mechanism are rotatably connected respectively.

[0013] Furthermore, the positioning mechanism includes a fixed seat, a first bearing seat, a second bearing seat, a first bearing, and a second bearing; the first bearing seat and the second bearing seat are fixed on the fixed seat, and the positions of the first bearing seat and the second bearing seat are perpendicular; the first bearing is installed on the first bearing seat, and the second bearing is installed on the second bearing seat; the driving bevel gear is connected to a third connecting shaft, and the third connecting shaft is connected to the first bearing in the first bearing seat; the sleeve is connected to the second bearing in the second bearing seat.

[0014] Furthermore, the fixing base is a rectangular plate structure. The first bearing housing and the second bearing housing have the same structure, each having a support block. The bottom ends of the support block are provided with protruding fixing blocks. The fixing blocks at both ends of the first bearing housing and the fixing blocks at both ends of the second bearing housing are fixed to the fixing base by the first set screw.

[0015] The beneficial effects of this invention compared to the prior art are as follows: 1. This invention effectively solves the problem of easy breakage of lead wire in the traditional lead wire reduction drawing method, reduces manual labor, shortens the grinding time of a single lead wire, and improves work efficiency. 2. The lead wire diameter reduction is achieved by using a dedicated grinding tool set, which effectively ensures the machining accuracy and helps improve the consistency of product processing.

[0016] 3. The grinding device structure of this invention is designed to adjust the grinding radius, enabling multi-metal and multi-size processing and ensuring product versatility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the perforated rotating lead wire diameter reduction device of the present invention; Figure 2 This is a schematic diagram of the transmission mechanism described in this invention; Figure 3 This is a schematic diagram of the positioning mechanism described in this invention; Figure 4 This is a side view of the grinding mechanism described in this invention; Figure 5 In Example 1 Figure 4 Sectional view along the BB direction; Figure 6 In Example 2 Figure 4 Sectional view along the BB direction; Figure 7 This is a schematic diagram of the structure of the grinding tool described in this invention; Figure 8 This is a cross-sectional view of the grinding tool assembly; Number in the diagram: 1. Transmission mechanism; 2. Positioning mechanism; 3. Grinding mechanism; 4. Lead wire; 101. Driving bevel gear; 102. Third connecting shaft; 103. Second set screw; 201. Fixed seat; 202. First bearing seat; 203. Second bearing seat; 204. First bearing; 205. Second bearing; 206. First set screw; 301. Driven bevel gear; 302. Connecting ring; 303. Sleeve; 304. Double nut; 305. First connecting shaft; 306. Second connecting shaft; 307. Spring; 308. Ejector pin; 309. Washer; 310. Grinding tool assembly; 311. Adjusting screw; 312. Grinding tool; 313. Fixing bolt. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto. Example 1

[0019] See Figures 1 to 5 This embodiment proposes a perforated rotating lead wire diameter reduction device, including a transmission mechanism 1, a positioning mechanism 2, and a grinding mechanism 3.

[0020] In this embodiment, the positioning mechanism 2 includes a fixed base 201, a first bearing seat 202, a second bearing seat 203, a first bearing 204, a second bearing 205, and a first set screw 206. The fixed base 201 is a rectangular plate structure. The first bearing seat 202 and the second bearing seat 203 have the same structure, each having a support block. Protruding fixing blocks are provided at both ends of the bottom of the support block. The fixing blocks at both ends of the first bearing seat 202 and the second bearing seat 203 are fixed to the fixed base 201 by the first set screw 206, and the positions of the first bearing seat 202 and the second bearing seat 203 are perpendicular. The support blocks of the first bearing housing 202 and the second bearing housing 203 are both hollow structures with circular centers. The first bearing 204 is installed inside the hollow structure of the support block of the first bearing housing 202 by the first set screw 206. The second bearing 205 is installed inside the hollow structure of the support block of the second bearing housing 203 by the first set screw 206. The transmission mechanism 1 is connected to the first bearing 204, and the grinding mechanism 3 is connected to the second bearing 205, providing positioning for the rotational movement of the transmission mechanism 1 and the grinding mechanism 3.

[0021] In this embodiment, the transmission mechanism 1 includes a driving bevel gear 101, a third connecting shaft 102, and a second set screw 103. The driving bevel gear 101 is responsible for transmitting power and rotational speed, and the third connecting shaft 102 is fixed to the driving bevel gear 101 by the second set screw 103. The third connecting shaft 102 of the transmission mechanism 1 is connected to the output shaft of the motor, serving as a power input, and the motor drives the third connecting shaft 102 and the driving bevel gear 101 to rotate. The third connecting shaft 102 is connected to the first bearing 204 inside the first bearing housing 202.

[0022] In this embodiment, the grinding mechanism 3 includes a driven bevel gear 301, a connecting ring 302, a sleeve 303, a double nut 304, a first connecting shaft 305, a second connecting shaft 306, a ejector pin 308, a washer 309, and a grinding tool assembly 310. The connecting ring 302 is threadedly connected to the sleeve 303, and the connecting ring 302 is pressed against the driven bevel gear 301 by the double nuts 304; the sleeve 303 is connected to the second bearing 205 in the second bearing seat 203; one end of the first connecting shaft 305 is axially positioned by pressing the connecting ring 302 against the double nuts 304, and the other end of the first connecting shaft 305 is threadedly connected to the second connecting shaft 306; the driven bevel gear 301 meshes with the driving bevel gear 101, and when the driving bevel gear 101 drives the driven bevel gear 301 to rotate, it simultaneously drives the connecting ring 302, sleeve 303, first connecting shaft 305, and second connecting shaft 306 to rotate; the first connecting shaft 305 and the second connecting shaft 306 are both hollow columnar structures.

[0023] The ejector pin 308 has a cylindrical ring structure and is connected to the first connecting shaft 305. The end of the ejector pin 308 away from the first connecting shaft 305 is connected to a washer 309. The washer 309 has a frustoconical ring structure, and its outer edge abuts against the inner wall of the second connecting shaft 306. A grinding tool assembly 310 with a through hole is connected to the washer 309. A hollow fixing bolt 313 is connected to the end of the sleeve 303 away from the driven bevel gear 301. The fixing bolt 313... The grinding tool assembly 310 is tightened. When the driving bevel gear 101 drives the driven bevel gear 301 to rotate, the ejector pin 308, the washer 309, and the grinding tool assembly 310 rotate together under the drive of the second connecting shaft 306. The lead wire 4 passes through the center of the driven bevel gear 301, the connecting ring 302, the first connecting shaft 305, the ejector pin 308, the washer 309, and the grinding tool assembly 310 in sequence. When the grinding tool assembly 310 rotates, it grinds the outer wall of the lead wire 4, thereby reducing the radius. Example 2

[0024] See Figures 1-4 as well as Figures 6 to 8 As an improved structure of Embodiment 1, this device adds a structure for adjusting the opening size of the grinding tool assembly 310, the grinding mechanism 3 also includes a spring 307, and the fixing bolt 313 is replaced by an adjusting screw 311. The ejector pin 308 has a cylindrical ring structure and is slidably connected to the first connecting shaft 305. One end of the spring 307 is connected to the first connecting shaft 305, and the other end of the spring 307 is connected to the ejector pin 308. The end of the ejector pin 308 away from the spring 307 is connected to the washer 309. The washer 309 has a frustum-shaped ring structure, and its outer edge abuts against the inner wall of the second connecting shaft 306. A grinding tool assembly with a through hole in the middle is connected to the washer 309. 310. When the driving bevel gear 101 drives the driven bevel gear 301 to rotate, the ejector pin 308, the washer 309, and the grinding tool assembly 310 rotate together under the drive of the second connecting shaft 306. The lead wire 4 passes through the center of the driven bevel gear 301, the connecting ring 302, the first connecting shaft 305, the ejector pin 308, the washer 309, and the grinding tool assembly 310 in sequence. When the grinding tool assembly 310 rotates, it grinds the outer wall of the lead wire 4, thereby reducing the radius.

[0025] An adjusting screw 311 is connected to the end of the sleeve 303 away from the driven bevel gear 301. The end of the adjusting screw 311 located inside the sleeve 303 abuts against the grinding tool assembly 310. The end of the grinding tool assembly 310 away from the adjusting screw 311 abuts against the washer 309. When the driving bevel gear 101 drives the driven bevel gear 301 to rotate, the ejector pin 308, washer 309, and grinding tool assembly 310 rotate together under the drive of the second connecting shaft 306. The lead wire 4 passes through the center of the driven bevel gear 301, connecting ring 302, first connecting shaft 305, ejector pin 308, washer 309, grinding tool assembly 310, and adjusting screw 311 in sequence. When the grinding tool assembly 310 rotates, it grinds the outer wall of the lead wire 4.

[0026] The grinding tool assembly 310 consists of three identical grinding tools 312, with evenly distributed grinding teeth on the inner wall of each grinding tool 312. The included angle between two adjacent grinding tools 312 is 120°. When it is necessary to adjust the size of the center hole between the three grinding tools 312, the compression of the spring 307 can be adjusted by changing the thread of the adjusting screw 311, thereby adjusting the opening size of the grinding tool assembly 310 and thus adjusting the grinding value of the radius of the lead wire 4.

[0027] The working principle of a perforated rotary lead wire diameter reduction device proposed in this embodiment is as follows: First, connect the transmission mechanism 1 and the grinding mechanism 3 to the positioning mechanism 2, and then connect the output shaft of the motor to the third connecting shaft 102. Pass the lead wire 4 through the grinding mechanism 3 and fix both ends of the lead wire 4; When the motor is started, the output shaft of the motor drives the third connecting shaft 102 to rotate, the third connecting shaft 102 drives the driving bevel gear 101 to rotate, the driving bevel gear 101 drives the driven bevel gear 301 to rotate, and the driven bevel gear 301 drives the sleeve 303, the first connecting shaft 305, the second connecting shaft 306, the ejector pin 308, the washer 309, and the grinding tool assembly 310 to rotate as a whole, thereby grinding the outer wall of the lead wire 4. When it is necessary to adjust the opening size of the grinding tool assembly 310, the compression of the spring 307 can be adjusted by changing the thread of the adjusting screw 311, thereby squeezing the three grinding tools 312, increasing or decreasing the size of the central hole between the three grinding tools 312, thereby changing the opening size of the grinding tool assembly 310, and adjusting the grinding value of the lead wire 4 radius (2.1mm~2.5mm).

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features.

[0029] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the protection scope of this invention.

[0030] To provide the public with a thorough understanding of the present invention, specific details have been described in detail in the above preferred embodiments. However, those skilled in the art can fully understand the invention even without these detailed descriptions. Several improvements and modifications can be made without departing from the principles of the invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A perforated rotating lead wire reducing device, characterized by, The grinding mechanism (3) is rotated by a driving component, and the grinding mechanism (3) comprises a connecting ring (302), a sleeve (303), a first connecting shaft (305), a second connecting shaft (306), a thimble (308), a gasket (309) and a grinding cutter group (310); one end of the first connecting shaft (305) is coaxially connected with the connecting ring (302), and the other end of the first connecting shaft (305) is connected with the second connecting shaft (306); the thimble (308) is connected with the first connecting shaft (305), one end of the thimble (308) away from the first connecting shaft (305) is connected with the gasket (309), the gasket (309) is connected with the grinding cutter group (310) with a through hole in the middle, one end of the sleeve (303) away from the connecting ring (302) is connected with a hollow fixing bolt (313), and the fixing bolt (313) is in abutment with the grinding cutter group (310); and a lead wire (4) passes through the centers of the connecting ring (302), the first connecting shaft (305), the thimble (308), the gasket (309), the grinding cutter group (310) and the fixing bolt (313) in sequence.

2. A perforated rotating lead wire reducing device, characterized by, The grinding mechanism (3) is rotated by a driving component, and the grinding mechanism (3) comprises a connecting ring (302), a sleeve (303), a first connecting shaft (305), a second connecting shaft (306), a spring (307), a thimble (308), a gasket (309) and a grinding cutter group (310); one end of the first connecting shaft (305) is coaxially connected with the connecting ring (302), and the other end of the first connecting shaft (305) is connected with the second connecting shaft (306); the thimble (308) is connected with the first connecting shaft (305), one end of the thimble (308) away from the first connecting shaft (305) is connected with the gasket (309), the gasket (309) is connected with the grinding cutter group (310) with a through hole in the middle, one end of the sleeve (303) away from the connecting ring (302) is connected with a adjusting screw (311), one end of the adjusting screw (311) inside the sleeve (303) is in abutment with the grinding cutter group (310), and one end of the grinding cutter group (310) away from the adjusting screw (311) is in abutment with the gasket (309); and a lead wire (4) passes through the centers of the connecting ring (302), the first connecting shaft (305), the thimble (308), the gasket (309), the grinding cutter group (310) and the adjusting screw (311) in sequence.

3. A perforated rotating lead wire reducing device according to claim 2, wherein The grinding cutter group (310) is composed of three identical grinding cutters (312), the inner wall of the grinding cutter (312) is uniformly distributed with grinding teeth, and the included angle between two adjacent grinding cutters (312) is 120°.

4. A perforated rotating lead wire reducing device according to claim 1 or 2, characterized in that One end of the first connecting shaft (305) is axially positioned by abutting against the connecting ring (302) through double nuts (304).

5. A perforated rotating lead wire reducing device according to claim 1 or 2, wherein The transmission mechanism (1) is further connected with the grinding mechanism (3), and the transmission mechanism (1) is connected with a motor.

6. A perforated rotating lead wire reducing device according to claim 5, wherein The transmission mechanism (1) comprises a driving bevel gear (101), and the grinding mechanism (3) further comprises a driven bevel gear (301); the driven bevel gear (301) is engaged with the driving bevel gear (101).

7. A perforated rotating lead wire reducing device according to claim 6, wherein The connecting ring (302) is tightly connected to the driven bevel gear (301) through the double nuts (304).

8. A perforated rotating lead wire reducing device according to claim 6, wherein The positioning mechanism (2) is further provided, and the transmission mechanism (1) and the grinding mechanism (3) are respectively rotationally connected to the positioning mechanism (2).

9. A perforated rotating lead wire reducing device according to claim 8, wherein The positioning mechanism (2) comprises a fixed seat (201), a first bearing seat (202), a second bearing seat (203), a first bearing (204) and a second bearing (205); the first bearing seat (202) and the second bearing seat (203) are fixed on the fixed seat (201), and the positions of the first bearing seat (202) and the second bearing seat (203) are perpendicular to each other; the first bearing (204) is installed on the first bearing seat (202), and the second bearing (205) is installed on the second bearing seat (203); the driving bevel gear (101) is connected with a third connecting shaft (102), the third connecting shaft (102) is connected to the first bearing (204) in the first bearing seat (202); and the sleeve (303) is connected to the second bearing (205) in the second bearing seat (203).

10. A perforated rotating lead wire reducing device according to claim 9, wherein The fixed seat (201) is in a rectangular plate structure, the first bearing seat (202) and the second bearing seat (203) are the same in structure, and each has a support block, the bottom of the support block is provided with protruding fixed blocks at both ends, and the fixed blocks at both ends of the first bearing seat (202) and the fixed blocks at both ends of the second bearing seat (203) are fixed on the fixed seat (201) through first locking screws (206).

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