A valve stem nut machining and positioning assembly with air blow

Abstract

The utility model relates to a valve rod nut machining positioning assembly with air blowing relates to nut machining equipment technical field, including three jaw chuck and driving part, its characterized in that, including air gun assembly, set up in three jaw chuck side, air gun assembly includes air gun and the air pipe connected with air gun, air pipe collection mechanism, air pipe is accomodated in air pipe collection mechanism, and air pipe collection mechanism includes: automatic back -rolling assembly, it includes rotatable setting wire roller and drive wire roller back -rolling spring, and air pipe is wound on wire roller, rotation limit component, with wire roller cooperation, is used for limiting wire roller back -rolling after air pipe is pulled out, remove limit component, with rotation limit component is connected, is used for removing rotation limit component's limitation to wire roller, makes wire roller wind air pipe under the drive of spring, the utility model discloses the air pipe of air gun assembly and automatic back -rolling, rotation limit and remove limit air pipe collection mechanism combination, realize the automatic accomodation and on -demand release of air pipe, avoid the security risk that air pipe is scattered and brings.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a valve stem nut machining and positioning assembly with air blowing. Background Technology

[0002] Positioning fixtures for valve stem nut machining are indispensable special tooling in the machining process. Their main function is to accurately fix the valve stem nut, ensuring its positional accuracy and stability during machining. By firmly clamping the workpiece on the fixture, displacement or loosening under the influence of cutting forces, vibrations and other factors can be effectively prevented, thereby meeting the needs of high-precision machining.

[0003] During the precision machining of valve stem nuts, cutting phenomena are inevitable. The high-speed rotating workpiece and cutting tool generate a large number of chips. These chips are thrown out at high speed under the action of centrifugal force, forming flying chips. These flying chips may not only fall into the key moving parts of the machining equipment, causing equipment wear, jamming, or even damage, affecting production efficiency and equipment life; at the same time, flying chips may also adhere to the machined surface of the valve stem nut, affecting the surface quality and roughness of the workpiece, and may even lead to a decrease in the dimensional accuracy of the workpiece, failing to meet the machining requirements.

[0004] To address the issue of flying chips generated during the cutting process, existing technologies typically employ air guns to blow away and clean the chips. This method effectively removes flying chips from the workpiece surface and equipment area, maintaining a clean processing environment. However, when using air guns for cleaning, the air guns usually require connection to an external power source via ductwork. These ductworks are often haphazardly arranged within the factory environment, easily causing wiring chaos. This not only affects the cleanliness and management of the workshop but, more importantly, the scattered ductwork can easily trip nearby operators, leading to falls, injuries, and other safety accidents, posing a serious threat to the personal safety of workers.

[0005] Therefore, how to effectively clean up cutting debris while avoiding safety hazards caused by the air gun equipment duct is a technical problem that urgently needs to be solved by the positioning fixtures and auxiliary cleaning devices used for valve stem nut processing. Utility Model Content

[0006] This utility model discloses a valve stem nut processing and positioning assembly with air blowing, which aims to solve the safety hazards and chaotic workshop management problems caused by the random arrangement of air gun equipment air ducts in the prior art.

[0007] This application provides a valve stem nut machining and positioning assembly with air blowing capability. The assembly includes a three-jaw chuck for fixing the nut and a drive unit for driving a cutting tool to cut the nut. Its key feature is that it includes: An air gun assembly, which is disposed on the side of a three-jaw chuck, includes an air gun and an air duct connected to the air gun; A duct collection mechanism, wherein the duct is housed within the duct collection mechanism, the duct collection mechanism comprising: An automatic rewinding assembly includes a rotatably mounted wire roller and a spring for driving the wire roller to rewind, the air duct being wound around the wire roller; A rotation limiting component, which cooperates with the wire roller, is used to limit the wire roller from rewinding after the air duct is pulled out; A release limiting component, which is connected to the rotation limiting component, is used to release the restriction of the rotation limiting component on the roller, so that the roller can wind up the air duct under the drive of the spring.

[0008] This technical solution combines the air gun assembly's duct with an automatic rewinding, rotation limit, and limit release duct collection mechanism, achieving automatic duct storage and on-demand release, effectively avoiding safety hazards and management problems caused by scattered ducts.

[0009] In this embodiment, the outer peripheral wall of the roller is provided with a plurality of wedge blocks; the rotation limiting component includes a connecting block and an abutment block disposed on the connecting block, the abutment block being used to abut against the wedge blocks to limit the rotation of the roller.

[0010] This technical solution provides a specific structure for the wedge block and the abutment block to cooperate, which effectively locks the rotation of the roller and ensures that the duct can be stably maintained at the required length after it is pulled out.

[0011] In this embodiment, the positioning assembly for the valve stem nut with air blowing described above is provided with a beveled surface on the abutment block; the release limiting assembly includes a pressing plate, a transmission rod connected to the pressing plate, a transmission block connected to the transmission rod, and a sliding pressing plate connected to the transmission block; the sliding pressing plate is used to push the beveled surface to separate the abutment block from the wedge block.

[0012] This technical solution designs a linkage structure that uses a pressing plate, a transmission rod, a transmission block, and a sliding pressing plate to push the inclined surface of the abutment block, providing a convenient and labor-saving way to release the limit and making it easy for users to operate.

[0013] In this embodiment, the connecting block has an abutment groove, and the abutment block is slidably disposed in the abutment groove; the rotation limiting component also includes an abutment spring disposed in the abutment groove, and the abutment spring is used to drive the abutment block to abut against the wedge block.

[0014] This technical solution incorporates an abutment groove and an abutment spring, enabling the abutment block to slide stably within the groove and engage with the wedge block via the spring, thereby improving the reliability of the limiting mechanism.

[0015] In this embodiment, the release limiting component further includes a transmission spring sleeved on the transmission rod; the transmission spring is used to reset after the pressing plate is pressed.

[0016] This technical solution incorporates a transmission spring, ensuring that the release limit component automatically resets to its initial state after the press is released, preparing for the next locking action.

[0017] In this embodiment, the automatic rewinding assembly further includes a protective housing and a central shaft disposed within the protective housing; the wire roller is rotatably disposed on the central shaft; the spring is sleeved on the central shaft, one end of the spring is fixed to the central shaft, and the other end is fixed to the inner wall of the wire roller; the rotation limiting assembly and the release limiting assembly are both disposed within the protective housing.

[0018] This technical solution integrates automatic rewinding, rotation limit, and release limit components within a protective housing, resulting in a compact structure that facilitates installation and protects the internal mechanisms. Meanwhile, the central shaft and spring configuration provide stable rewinding power.

[0019] In this embodiment, a limiting ring is provided on the duct; the limiting ring is used to abut against the protective shell when the duct is wound up.

[0020] This technical solution incorporates a limiting ring to prevent the air hose from retracting completely into the protective housing, making it easier to pull out the air hose for the next use, while also protecting the connection between the air gun and the air hose.

[0021] In this embodiment, the air gun assembly further includes a support frame and a duct connecting frame; the air gun is connected to the support frame via the duct connecting frame; and the duct is connected to an external negative pressure unit.

[0022] This technical solution adds a support frame and a duct connection frame, which allows the air gun to be stably installed on the positioning clamp assembly, making it easy to adjust the angle and position of the air gun. At the same time, the duct is connected to an external negative pressure unit to ensure a continuous airflow for cleaning.

[0023] In this embodiment, a mounting bracket is also included; the duct collection mechanism is fixed to the mounting bracket.

[0024] This technical solution involves setting up a mounting frame, which provides a fixed mounting base for the duct collection mechanism, making it easy to integrate the entire component onto the positioning fixture used for valve stem nut machining. Attached Figure Description

[0025] Figure 1 A three-dimensional structural schematic diagram of the valve stem nut machining and positioning assembly with air blowing provided in the embodiments of this application; Figure 2Exploded view of the duct collection mechanism provided in the embodiments of this application Figure 1 ; Figure 3 Exploded view of the duct collection mechanism provided in the embodiments of this application Figure 2 ; Figure 4 A three-dimensional structural diagram of the release limit component provided in an embodiment of this application; Figure 5 This is an exploded structural diagram of the rotation limiting assembly provided in the embodiments of this application; The following are the labeling elements in the figures: 1. Mounting bracket; 11. Three-jaw chuck; 12. Drive unit; 2. Air gun assembly; 21. Support frame; 22. Air gun; 23. Air duct connecting frame; 24. Air duct; 3. Air duct collection mechanism; 31. Automatic rewind assembly; 311. Protective housing; 312. Central shaft; 313. Wire roller; 314. Spring; 32. Rotation limit assembly; 321. Wedge block; 322. Connecting block; 323. Abutment block; 324. Abutment groove; 325. Abutment spring; 326. Angled surface; 33. Release limit assembly; 331. Transmission block; 332. Transmission rod; 333. Pressing plate; 334. Transmission spring; 335. Sliding pressing plate; 4. Limit ring. Detailed Implementation

[0026] During the precision machining of valve stem nuts, flying debris may adhere to the machined surface of the valve stem nut, affecting the surface quality and roughness of the workpiece, which may lead to a decrease in the dimensional accuracy of the workpiece and failure to meet the machining requirements.

[0027] Therefore, in order to solve the safety hazards and chaotic workshop management caused by the arbitrary layout of air gun equipment ducts in the existing technology.

[0028] Please refer to the following: Figures 1 to 5This application provides a valve stem nut machining and positioning assembly with air blowing capability. The assembly includes a three-jaw chuck 11 for fixing the nut and a drive unit 12 for driving a cutting tool to cut the nut. It also includes: an air gun assembly 2, an air duct collection mechanism 3, and an automatic rewind assembly 31; a rotation limit assembly 32 and a release limit assembly 33; the air gun assembly 2 is located on the side of the three-jaw chuck 11 and includes an air gun 22 and an air duct 24 connected to the air gun 22; the air duct collection mechanism 3 collects the air duct 24... The duct 24 is housed within the duct collection mechanism 3, which includes: an automatic rewind assembly 31, comprising a rotatably mounted wire roller 313 and a spring 314 for driving the wire roller 313 to rewind, with the duct 24 wound around the wire roller 313; a rotation limiting assembly 32, which cooperates with the wire roller 313 to limit the rewinding of the wire roller 313 after the duct 24 is pulled out; and a release limiting assembly 33, which is connected to the rotation limiting assembly 32 to release the restriction of the rotation limiting assembly 32 on the wire roller 313, so that the wire roller 313 can rewind the duct 24 under the drive of the spring 314.

[0029] This application provides a valve stem nut machining and positioning assembly with air blowing. During the process of fixing the nut with a three-jaw chuck 11 and driving a cutter to cut the nut via a drive unit 12, the air gun 22, which is movably fixed on the support frame 21 via an air duct connecting frame 23, is manually removed to clean up the metal shavings generated during cutting. In this way, by combining the air duct 24 of the air gun assembly 2 with the air duct collection mechanism 3 that automatically retracts, limits rotation, and releases limits, the automatic storage and on-demand release of the air duct 24 is achieved, effectively avoiding safety hazards and management problems caused by the scattered air duct 24.

[0030] In this embodiment, the outer peripheral wall of the yarn roller 313 is provided with a plurality of wedge blocks 321; the rotation limiting component 32 includes a connecting block 322 and an abutment block 323 disposed on the connecting block 322, the abutment block 323 being used to abut against the wedge blocks 321 to limit the rotation of the yarn roller 313.

[0031] This configuration provides a specific structure for the wedge block 321 and the abutment block 323 to cooperate, effectively locking the rotation of the roller 313 and ensuring that the duct 24 can stably maintain the required length after being pulled out.

[0032] In this embodiment, the abutment block 323 is provided with a beveled surface 326; the release limiting component 33 includes a pressing plate 333, a transmission rod 332 connected to the pressing plate 333, a transmission block 331 connected to the transmission rod 332, and a sliding pressing plate 335 connected to the transmission block 331; the sliding pressing plate 335 is used to push the beveled surface 326 so that the abutment block 323 is separated from the wedge block 321.

[0033] This configuration allows the pressing plate 333 to compress the transmission block 331 inward via the transmission rod 332. The transmission block 331 then drives the sliding pressing plate 335 to compress the abutment block 323 inward via the inclined surface 326 of the abutment block 323. This releases the positional constraint between the abutment block 323 and the wedge-shaped block, allowing the roller 313 to rotate under the action of the spring 314. The linkage structure of the pressing plate 333, transmission rod 332, transmission block 331, and sliding pressing plate 335 pushing the inclined surface 326 of the abutment block 323 provides a labor-saving method for releasing the limiting position, facilitating user operation.

[0034] In this embodiment, the connecting block 322 is provided with an abutment groove 324, and the abutment block 323 is slidably disposed in the abutment groove 324; the rotation limiting component 32 also includes an abutment spring 325 disposed in the abutment groove 324, and the abutment spring 325 is used to drive the abutment block 323 to abut against the wedge block 321.

[0035] With this configuration, during rotation, the wire roller 313 abuts against the abutment block 323 via the wedge-shaped block. During forward rotation, the wedge-shaped block slides and compresses the abutment spring 325 on the abutment block 323, compressing the abutment block 323 into the abutment groove 324, thus preventing restriction on the elongation of the air duct. When pulled to the appropriate position, the wire roller 313 tends to reverse under the action of the spring 314, but the wedge-shaped block abuts against the abutment block 323, restricting the reverse operation of the wire roller 313. The abutment groove 324 and the abutment spring 325 allow the abutment block 323 to slide stably within the groove and be driven by the spring to engage with the wedge block 321, improving the reliability of the limiting mechanism.

[0036] In this embodiment, the release limit assembly 33 further includes a transmission spring 334 sleeved on the transmission rod 332; the transmission spring 334 is used to reset after the pressing plate 333 is pressed.

[0037] This configuration adds a transmission spring 334, ensuring that the release limit component 33 can automatically return to its initial state after the press is released, preparing for the next locking.

[0038] In this embodiment, the automatic rewinding assembly 31 further includes a protective housing 311 and a central shaft 312 disposed within the protective housing 311; the wire roller 313 is rotatably disposed on the central shaft 312; the spring 314 is sleeved on the central shaft 312, one end of the spring 314 is fixed to the central shaft 312, and the other end is fixed to the inner wall of the wire roller 313; the rotation limiting assembly 32 and the release limiting assembly 33 are both disposed within the protective housing 311.

[0039] This configuration integrates the automatic rewinding, rotation limit, and release limit components 33 into the protective housing 311, resulting in a compact structure that facilitates installation and protects the internal mechanisms. Meanwhile, the central shaft 312 and the mainspring 314 provide stable rewinding power.

[0040] In this embodiment, a limiting ring 5 is provided on the air duct 24; the limiting ring 5 is used to abut against the protective shell 311 when the air duct 24 is rolled up.

[0041] With this design, a limit ring 5 is provided to prevent the air duct 24 from retracting completely into the protective housing 311, making it easier to pull out the air duct 24 for the next use. It also protects the connection between the air gun 22 and the air duct 24.

[0042] In this embodiment, the air gun assembly 2 also includes a support frame 21 and an air duct connecting frame 23; the air gun 22 is connected to the support frame 21 through the air duct connecting frame 23; and the air duct 24 is connected to an external negative pressure machine.

[0043] This configuration adds a support frame 21 and a duct connection frame 23, allowing the air gun 22 to be stably mounted on the positioning clamp assembly, facilitating the adjustment of the angle and position of the air gun 22. At the same time, the duct 24 is connected to an external negative pressure unit to ensure a continuous airflow for cleaning.

[0044] In this embodiment, a mounting frame 1 is also included; the duct collection mechanism 3 is fixed on the mounting frame 1.

[0045] With this setup, mounting bracket 1 is provided, which provides a fixed mounting base for the duct collection mechanism 3, making it easy to integrate the entire assembly onto the positioning fixture for valve stem nut machining.

[0046] The working principle of a valve stem nut processing positioning component with air blowing is as follows: when the nut is fixed by the three-jaw chuck 11 and the cutting tool is driven by the drive component 12 to cut the nut, the air gun 22, which is movably fixed on the support frame 21 through the air duct connecting frame 23, is manually picked up to clean up the iron filings generated by cutting.

[0047] Before the retrieval process, the air duct on the air gun 22 is stored on the linear roller 313. The other end of the air duct is connected to an external negative pressure machine to supply air to the air gun 22. During the retrieval process, the air duct extends and drives the linear roller 313 to rotate. At the same time, the spring 314 inside the linear roller 313 is tightened during the rotation of the linear roller 313. During the rotation of the linear roller 313, it abuts against the abutting block 323 through the wedge block. During the forward rotation, the wedge block slides and compresses the abutting spring 325 on the abutting block 323, compressing the abutting block 323 into the abutting groove 324 to avoid restricting the extension of the air duct. When pulled to the appropriate position, the linear roller 313 has a tendency to reverse under the action of the spring 314, but the wedge block abuts against the abutting block 323, restricting the reverse operation of the linear roller 313. During the process of retracting the air duct after use of the air gun 22, pressing the pressing plate 333 compresses the transmission block 331 inward through the transmission rod 332. The transmission block 331 drives the sliding pressing plate 335 to compress the abutment block 323 inward through the inclined surface 326 of the abutment block 323, thereby releasing the positional restriction between the abutment block 323 and the wedge block. This causes the roller 313 to rotate under the action of the spring 314, retracting the air duct. After retraction, the transmission spring 334 drives the pressing plate 333 and the transmission block 331 to reset, causing the abutment block 323 to rebound under the action of the abutment spring 325. At the same time, the limiting ring 5 on the air duct abuts against the outer wall of the protective shell 311 to avoid damage caused by over-retraction.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve stem nut machining and positioning assembly with air blowing, comprising a three-jaw chuck (11) for fixing the nut and a drive unit (12) for driving a cutting tool to cut the nut, characterized in that, include: Air gun assembly (2), which is located on the side of the three-jaw chuck (11), the air gun assembly (2) includes an air gun (22) and an air duct (24) connected to the air gun (22). A duct collection mechanism (3) is provided, wherein the duct (24) is housed within the duct collection mechanism (3), and the duct collection mechanism (3) comprises: An automatic rewind assembly (31) includes a rotatably mounted wire roller (313) and a spring (314) for driving the wire roller (313) to rewind, the air duct (24) being wound around the wire roller (313). A rotation limiting assembly (32), which cooperates with the wire roller (313), is used to limit the rewinding of the wire roller (313) after the air duct (24) is pulled out; Release the limiting component (33), which is connected to the rotation limiting component (32), and release the restriction of the rotation limiting component (32) on the roller (313) so that the roller (313) can wind up the air duct (24) under the drive of the spring (314).

2. The valve stem nut machining and positioning assembly with air blowing according to claim 1, characterized in that: The outer peripheral wall of the roller (313) is provided with a plurality of wedge blocks (321); the rotation limiting assembly (32) includes a connecting block (322) and an abutment block (323) provided on the connecting block (322), the abutment block (323) being used to abut against the wedge block (321) to limit the rotation of the roller (313).

3. The valve stem nut machining and positioning assembly with air blowing according to claim 2, characterized in that: The abutment block (323) is provided with a beveled surface (326); the release limiting component (33) includes a pressing plate (333), a transmission rod (332) connected to the pressing plate (333), a transmission block (331) connected to the transmission rod (332), and a sliding pressing plate (335) connected to the transmission block (331); the sliding pressing plate (335) is used to push the beveled surface (326) to separate the abutment block (323) from the wedge block (321).

4. The valve stem nut machining and positioning assembly with air blowing according to claim 2, characterized in that: The connecting block (322) has an abutment groove (324), and the abutment block (323) is slidably disposed in the abutment groove (324); the rotation limiting component (32) also includes an abutment spring (325) disposed in the abutment groove (324), and the abutment spring (325) is used to drive the abutment block (323) to abut against the wedge block (321).

5. The valve stem nut machining and positioning assembly with air blowing according to claim 3, characterized in that: The release limit assembly (33) also includes a transmission spring (334) sleeved on the transmission rod (332); the transmission spring (334) is used to reset after the pressing plate (333) is pressed.

6. The valve stem nut machining and positioning assembly with air blowing according to claim 1, characterized in that: The automatic rewinding assembly (31) further includes a protective housing (311) and a central shaft (312) disposed within the protective housing (311); the wire roller (313) is rotatably disposed on the central shaft (312); the spring (314) is sleeved on the central shaft (312), one end of the spring (314) is fixed to the central shaft (312), and the other end is fixed to the inner wall of the wire roller (313); the rotation limiting assembly (32) and the release limiting assembly (33) are both disposed within the protective housing (311).

7. The valve stem nut machining and positioning assembly with air blowing according to claim 6, characterized in that: A limiting ring (5) is provided on the air duct (24); the limiting ring (5) is used to abut against the protective shell (311) when the air duct (24) is rolled up.

8. The valve stem nut machining and positioning assembly with air blowing according to claim 1, characterized in that: The air gun assembly (2) also includes a support frame (21) and a duct connector (23); the air gun (22) is connected to the support frame (21) through the duct connector (23); the duct (24) is connected to an external negative pressure unit.

9. The valve stem nut machining and positioning assembly with air blowing according to claim 1, characterized in that: It also includes a mounting bracket (1); the duct collection mechanism (3) is fixed on the mounting bracket (1).

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