Threaded end tapping device for valve rod machining

Abstract

The utility model provides a thread end tapping device for valve rod machining, which belongs to the field of valve rod machining and comprises a workbench, an L-shaped plate fixedly connected to the outer wall of the workbench, a first electric push rod fixedly connected to the outer wall of the L-shaped plate, a driving motor mounted on the outer wall of the L-shaped plate and a tapping drill bit mounted at the output end of the driving motor. A clamping assembly is arranged on the top of the workbench. According to the tapping device, the abutting plate and the clamping arc-shaped plate are arranged, when the second electric push rod is controlled to move, the abutting plate can be driven by the pushing plate to move, the abutting plate has the supporting effect on the valve rod, and due to the fact that the movable plate and the buffer spring are arranged on the outer wall of the abutting plate, after the valve rod makes contact with the tapping drill bit, the valve rod can be clamped by the clamping arc-shaped plate. And impact force generated during operation of the tapping drill bit can be absorbed by the buffer spring, so that the tapping drill bit and the valve rod are prevented from being damaged by the impact force generated during operation after the tapping drill bit is in contact with the valve rod.

Description

Technical Field

[0001] The utility model relates to the field of valve stem processing, and more specifically, to a tapping device for the threaded end of valve stem processing. Background Art

[0002] As a key component of a valve, the quality and processing accuracy of the valve stem are directly related to the performance and service life of the entire valve. During the production process of the valve stem, the processing of the threaded end is an important link, and an accurate thread needs to be formed through a tapping process to facilitate the connection with other components of the valve.

[0003] Although the tapping device for the threaded end of valve stem processing has many advantages, there are also some defects in its structure. When the traditional equipment is in use, due to the lack of a sufficient buffering mechanism in the traditional equipment, when the tapping drill contacts the valve stem and starts, a large impact force will be generated between the tapping drill and the valve stem, which will not only damage the drill bit but also may damage the valve stem; how to solve these problems has become an urgent problem for those skilled in the art. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a tapping device for the threaded end of valve stem processing, aiming to solve the problem that when the existing tapping device starts, due to the lack of buffering between the drill bit and the valve stem, a large impact force will be generated between the drill bit and the valve stem during the operation of the drill bit, resulting in damage to the drill bit and the valve stem under the action of the impact force.

[0005] The utility model is implemented as follows:

[0006] The utility model provides a tapping device for the threaded end of valve stem processing, including a workbench, an L-shaped plate fixedly connected to the outer wall of the workbench, an electric push rod I fixedly connected to the outer wall of the L-shaped plate, a driving motor installed on the outer wall of the L-shaped plate, and a tapping drill bit installed at the output end of the driving motor. The output end of the electric push rod I penetrates through the outer wall of the L-shaped plate and is fixedly connected to the outer wall of the driving motor. A clamping assembly is arranged on the top of the workbench, and a supporting assembly is arranged on the top of the workbench.

[0007] The clamping assembly is composed of a pushing unit and a clamping unit. The pushing unit is located on the top of the workbench, and the clamping unit is located on the top of the workbench.

[0008] The pushing unit includes an electric push rod II, a pushing plate, a moving plate, a resisting plate, a sliding plate, and a buffer spring. The electric push rod II is fixedly connected to the top of the workbench. The pushing plate is installed above the workbench. The moving plate is slidably connected to the outer wall of the pushing plate. The resisting plate is fixedly connected to the outer wall of the moving plate. The sliding plate is fixedly connected to the outer wall of the moving plate. The buffer spring is fixedly connected to the outer wall of the sliding plate.

[0009] Preferably, a first support rod is fixedly connected to the bottom of the pushing plate. A first ball is rotatably connected to the bottom end of the first support rod located at the bottom of the pushing plate. The top of the workbench abuts against the bottom of the first ball. The outer wall of the pushing plate is connected to the output end of the second electric push rod.

[0010] By adopting the above technical solution, the operation of the second electric push rod can be controlled to enable the pushing plate to move on the top of the workbench through the first ball.

[0011] Preferably, a slide rail is provided inside the pushing plate. The sliding plate is located inside the slide rail and is slidably connected to the inner wall of the slide rail. One side of the buffer spring away from the sliding plate is fixedly connected to the inner wall of the slide rail.

[0012] By adopting the above technical solution, the abutting plate can apply pressure to the buffer spring through the moving plate and the sliding plate.

[0013] Preferably, the clamping unit includes a housing, a telescopic rod, a bent rod, a fixed housing, a clamping arc plate and a movable rod. The housing is fixedly connected to the outer wall of the pushing plate. The telescopic rod is installed on the outer wall of the housing. The bent rod is arranged above the workbench. The fixed housing is fixedly connected to the top of the workbench. The clamping arc plate is slidably connected to the top of the workbench. The movable rod is slidably connected to the inside of the bent rod.

[0014] Preferably, one end of the telescopic rod penetrates through the bent rod and extends to the inside of the bent rod. The outer wall of the telescopic rod is slidably connected to the inner wall of the bent rod penetrated. The bent rod penetrates through the fixed housing and extends to the outside of the fixed housing. The movable rod penetrates through the bent rod and is fixedly connected to the clamping arc plate.

[0015] By adopting the above technical solution, the telescopic rod can slide inside the bent rod. The fixed housing can support the bent rod. While the movable rod slides inside the bent rod, it can push the clamping arc plate to limit and fix the valve stem.

[0016] Preferably, the support assembly includes an arc plate, a spring push rod and a ball. The arc plate is arranged above the workbench. The spring push rod is fixedly connected to the top of the workbench. The ball is movably connected to the outer wall of the arc plate.

[0017] Preferably, the top end of the spring push rod is fixedly connected to the bottom of the arc plate. The balls are evenly laid on the outer wall of the arc plate.

[0018] By adopting the above technical solution, the spring push rod can support the valve stem through the arc plate. The existence of the balls can reduce the friction generated between the valve stem and the arc plate during the movement of the valve stem.

[0019] The beneficial effects of the present utility model are:

[0020] 1. By setting the abutment plate and the clamping arc plate, when controlling the movement of the second electric push rod, the abutment plate will be driven to move through the pushing plate, so that the abutment plate can support the valve stem. And because the moving plate and the buffer spring are arranged on the outer wall of the abutment plate, when the valve stem contacts the tapping drill bit and the impact force generated during the operation of the tapping drill bit is absorbed by the buffer spring, it can avoid the damage to the tapping drill bit and the valve stem caused by the impact force generated during the operation after the tapping drill bit contacts the valve stem. This solves the problem that in the existing tapping device, due to the lack of buffering between the drill bit and the valve stem, when the drill bit rotates, a large impact force will be generated between the drill bit and the valve stem, resulting in damage to the drill bit and the valve stem under the action of the impact force.

[0021] 2. By setting the arc plate and the ball, the arc plate can cooperate with the spring push rod to support the valve stem. At the same time, by installing the ball on the surface of the arc plate, when the valve stem is pushed later, the friction between the arc plate and the valve stem can be reduced, avoiding the phenomenon that the valve stem has a large displacement due to the large friction between the valve stem and the arc plate when the valve stem is pushed to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic diagram of the overall structure of a tapping device for the threaded end of valve stem processing provided by the embodiment of the present invention;

[0024] Figure 2 is the embodiment of the present invention Figure 1 Schematic diagram of the enlarged structure at position A;

[0025] Figure 3 is a schematic diagram of the internal structure of the pushing plate of a tapping device for the threaded end of valve stem processing provided by the embodiment of the present invention;

[0026] Figure 4 is the present invention Figure 3 Schematic diagram of the enlarged structure at position B;

[0027] Figure 5 is a schematic diagram of the internal structure of the bent rod of a tapping device for the threaded end of valve stem processing provided by the embodiment of the present invention.

[0028] In the figure: 1, workbench; 2, L-shaped plate; 3, first electric push rod; 4, drive motor; 5, tapping drill bit; 6, clamping assembly; 601, second electric push rod; 602, push plate; 603, moving plate; 604, abutting plate; 605, sliding plate; 606, buffer spring; 607, housing; 608, telescopic rod; 609, bent rod; 610, fixed housing; 611, clamping arc plate; 612, movable rod; 7, support assembly; 701, arc plate; 702, spring push rod; 703, ball. Detailed implementation manners

[0029] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Refer to Figures 1 - 5 , a tapping device for the threaded end of valve stem processing, including a workbench 1, an L-shaped plate 2 fixedly connected to the outer wall of the workbench 1, a first electric push rod 3 fixedly connected to the outer wall of the L-shaped plate 2, a drive motor 4 installed on the outer wall of the L-shaped plate 2, and a tapping drill bit 5 installed on the output end of the drive motor 4. The output end of the first electric push rod 3 penetrates the outer wall of the L-shaped plate 2 and is fixedly connected to the outer wall of the drive motor 4. When the first electric push rod 3 operates, it can push the drive motor 4 to move. A clamping assembly 6 is arranged on the top of the workbench 1. The clamping assembly 6 is composed of a pushing unit and a clamping unit. The pushing unit is located on the top of the workbench 1, and the clamping unit is located on the top of the workbench 1. A support assembly 7 is arranged on the top of the workbench 1.

[0031] The pushing unit includes an electric push rod II 601, a pushing plate 602, a moving plate 603, a resisting plate 604, a sliding plate 605 and a buffer spring 606. The electric push rod II 601 is fixedly connected to the top of the workbench 1. The pushing plate 602 is installed above the workbench 1. A first support rod is fixedly connected to the bottom of the pushing plate 602. A first ball is rotatably connected to the bottom end of the first support rod located at the bottom of the pushing plate 602. The top of the workbench 1 abuts against the bottom of the first ball. The outer wall of the pushing plate 602 is connected to the output end of the electric push rod II 601. By controlling the operation of the electric push rod II 601, the pushing plate 602 can move on the top of the workbench 1 through the first ball. A slide rail is provided inside the pushing plate 602. The moving plate 603 is slidably connected to the outer wall of the pushing plate 602. The resisting plate 604 is fixedly connected to the outer wall of the moving plate 603. The sliding plate 605 is fixedly connected to the outer wall of the moving plate 603. The sliding plate 605 is located inside the slide rail and is slidably connected to the inner wall of the slide rail. The buffer spring 606 is fixedly connected to the outer wall of the sliding plate 605. One side of the buffer spring 606 away from the sliding plate 605 is fixedly connected to the inner wall of the slide rail. The resisting plate 604 can apply pressure to the buffer spring 606 through the moving plate 603 and the sliding plate 605.

[0032] The clamping unit includes a housing 607, a telescopic rod 608, a bent rod 609, a fixed housing 610, a clamping arc plate 611 and a movable rod 612. The housing 607 is fixedly connected to the outer wall of the pushing plate 602. The telescopic rod 608 is installed on the outer wall of the housing 607. The bent rod 609 is arranged above the workbench 1. One end of the telescopic rod 608 penetrates through the bent rod 609 and extends into the bent rod 609. The outer wall of the telescopic rod 608 is slidably connected to the inner wall of the bent rod 609 through which it is penetrated. The telescopic rod 608 can slide inside the bent rod 609. The fixed housing 610 is fixedly connected to the top of the workbench 1. The bent rod 609 penetrates through the fixed housing 610 and extends to the outside of the fixed housing 610. The fixed housing 610 can support the bent rod 609. The clamping arc plate 611 is slidably connected to the top of the workbench 1. The movable rod 612 is slidably connected to the inside of the bent rod 609. The movable rod 612 penetrates through the bent rod 609 and is fixedly connected to the clamping arc plate 611. While the movable rod 612 slides inside the bent rod 609, it can push the clamping arc plate 611 to limit and fix the valve rod.

[0033] By setting the backing plate 604 and the clamping arc plate 611, when controlling the movement of the second electric push rod 601, the backing plate 604 will be driven to move by the pushing plate 602, so that the backing plate 604 can support the valve stem. And because the moving plate 603 and the buffer spring 606 are arranged on the outer wall of the backing plate 604, when the valve stem contacts the tapping drill bit 5 and the impact force generated during the operation of the tapping drill bit 5 will be absorbed by the buffer spring 606, avoiding the impact force generated by the operation after the tapping drill bit 5 contacts the valve stem from damaging the tapping drill bit 5 and the valve stem; it solves the problem that in the existing tapping device, due to the lack of buffering between the drill bit and the valve stem when starting, a large impact force will be generated between the drill bit and the valve stem during the operation of the drill bit, resulting in damage to the drill bit and the valve stem under the action of the impact force.

[0034] The support assembly 7 includes an arc plate 701, a spring push rod 702 and a ball 703. The arc plate 701 is arranged above the workbench 1. The spring push rod 702 is fixedly connected to the top of the workbench 1. The top end of the spring push rod 702 is fixedly connected to the bottom of the arc plate 701. The spring push rod 702 can support the valve stem through the arc plate 701. The ball 703 is movably connected to the outer wall of the arc plate 701. The balls 703 are evenly laid on the outer wall of the arc plate 701. The existence of the balls 703 can reduce the friction generated between the valve stem and the arc plate 701 during the movement of the valve stem.

[0035] By setting the arc plate 701 and the balls 703, the arc plate 701 and the spring push rod 702 cooperate to support the valve stem. At the same time, by installing the balls 703 on the surface of the arc plate 701, the friction between the arc plate 701 and the valve stem can be reduced when the valve stem is pushed later, avoiding the phenomenon that the valve stem has a large displacement due to the large friction between the valve stem and the arc plate 701 when the valve stem is pushed to move.

[0036] The working principle of the tapping device for the threaded end of the valve stem: Place the valve stem on the top of the arc plate 701 and contact the outer wall of the backing plate 604. Control the operation of the second electric push rod 601, so that the second electric push rod 601 drives the pushing plate 602 to move, so that the pushing plate 602 drives the backing plate 604 to move through the moving plate 603. When the backing plate 604 moves, it will push the valve stem to move inside the arc plate 701 until one end of the outer wall of the valve stem contacts the tapping drill bit 5. At the same time, when the pushing plate 602 moves, it will drive the telescopic rod 608 to move inside the bent rod 609 through the outer shell 607, so that the movable rod 612 pushes the clamping arc plate 611 to clamp and limit the valve stem under the action of the gas inside the bent rod 609. After the valve stem is limited, control the operation of the first electric push rod 3 and the drive motor 4, so that the tapping drill bit 5 rotates and taps the valve stem.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tapping device for the threaded end of valve stem processing, comprising a workbench (1), an L-shaped plate (2) fixedly connected to the outer wall of the workbench (1), an electric push rod one (3) fixedly connected to the outer wall of the L-shaped plate (2), a driving motor (4) installed on the outer wall of the L-shaped plate (2), and a tapping drill bit (5) installed at the output end of the driving motor (4), characterized in that: The output end of the electric push rod 1 (3) penetrates through the outer wall of the L-shaped plate (2) and is fixedly connected to the outer wall of the driving motor (4). A clamping assembly (6) is arranged on the top of the workbench (1), and a supporting assembly (7) is arranged on the top of the workbench (1). The clamping assembly (6) is composed of a pushing unit and a clamping unit. The pushing unit is located on the top of the workbench (1), and the clamping unit is located on the top of the workbench (1). The pushing unit includes an electric push rod 2 (601), a pushing plate (602), a moving plate (603), a resisting plate (604), a sliding plate (605), and a buffer spring (606). The electric push rod 2 (601) is fixedly connected to the top of the workbench (1). The pushing plate (602) is installed above the workbench (1). The moving plate (603) is slidably connected to the outer wall of the pushing plate (602). The resisting plate (604) is fixedly connected to the outer wall of the moving plate (603). The sliding plate (605) is fixedly connected to the outer wall of the moving plate (603). The buffer spring (606) is fixedly connected to the outer wall of the sliding plate (605).

2. The tapping device for the threaded end of the valve stem machining according to claim 1, wherein: A first support rod is fixedly connected to the bottom of the pushing plate (602). A first ball is rotatably connected to the bottom end of the first support rod located at the bottom of the pushing plate (602). The top of the workbench (1) abuts against the bottom of the first ball. The outer wall of the pushing plate (602) is connected to the output end of the electric push rod 2 (601).

3. The tapping device for the threaded end of the valve stem machining according to claim 2, characterized in that: A slide rail is formed inside the pushing plate (602). The sliding plate (605) is located inside the slide rail and is slidably connected to the inner wall of the slide rail. The side of the buffer spring (606) away from the sliding plate (605) is fixedly connected to the inner wall of the slide rail.

4. A tapping device for the threaded end of a valve stem machining according to claim 1, characterized in that: The clamping unit includes a housing (607), a telescopic rod (608), a bent rod (609), a fixed housing (610), a clamping arc plate (611), and a movable rod (612). The housing (607) is fixedly connected to the outer wall of the pushing plate (602). The telescopic rod (608) is installed on the outer wall of the housing (607). The bent rod (609) is arranged above the workbench (1). The fixed housing (610) is fixedly connected to the top of the workbench (1). The clamping arc plate (611) is slidably connected to the top of the workbench (1). The movable rod (612) is slidably connected to the inside of the bent rod (609).

5. The tapping device for the threaded end of the valve stem machining according to claim 4, wherein: One end of the telescopic rod (608) penetrates through the bent rod (609) and extends into the inside of the bent rod (609). The outer wall of the telescopic rod (608) is slidably connected to the inner wall of the bent rod (609) where it is penetrated. The bent rod (609) penetrates through the fixed housing (610) and extends to the outside of the fixed housing (610). The movable rod (612) penetrates through the bent rod (609) and is fixedly connected to the clamping arc plate (611).

6. The tapping device for the threaded end of a valve stem machining according to claim 1, characterized in that: The support assembly (7) includes an arc plate (701), a spring push rod (702) and a ball (703). The arc plate (701) is arranged above the workbench (1). The spring push rod (702) is fixedly connected to the top of the workbench (1). The ball (703) is movably connected to the outer wall of the arc plate (701).

7. A tapping device for the threaded end of a valve stem machining according to claim 6, characterized in that: The top end of the spring push rod (702) is fixedly connected to the bottom of the arc plate (701). The balls (703) are evenly laid on the outer wall of the arc plate (701).

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