A high-rigidity ejector tailstock for blade processing

Abstract

The present invention discloses a high-rigidity ejector tailstock for blade processing, which relates to the technical field of ejector tailstocks and comprises an operating table, an upper end of which is slidably mounted with an adjustment block, and a side of which is slidably mounted with an ejector pin; the high-rigidity ejector tailstock for blade processing, when the adjustment plate moves, cooperates with the docking block to synchronously drive the movement of the curved plate, a cylindrical shape is formed by surrounding multiple groups of curved plates, and a rubber ring is limited by slots provided on the curved plates, so that when the curved plates move, the rubber ring is stretched, and during the stretching process, the gap between two adjacent curved plates is filled by the rubber ring, thereby ensuring that the whole remains stable when the blade end is centered.

Description

Technical Field

[0001] The invention relates to an ejector tailstock technology, in particular to a high-rigidity ejector tailstock for blade processing. Background Art

[0002] A machine tool is a device that primarily uses a turning tool to perform turning operations on rotating workpieces. It primarily consists of supporting components, a speed change mechanism, a feed mechanism, a spindle box, a lubrication system, and a tailstock. Modern mechanical manufacturing utilizes numerous methods for machining mechanical parts: in addition to cutting, there are also casting, forging, welding, stamping, and extrusion. However, parts requiring high precision and fine surface finishes generally require final machining using cutting methods on a machine tool.

[0003] Ejector tailstocks are often used to assist in securing workpieces during CNC machine tool processing. In the CNC lathe industry, an ejector tailstock is required for machining long shaft parts. A manual ejector tailstock can be used to support the tail of the workpiece to prevent deformation during cutting that could affect machining accuracy. Alternatively, a drill can be mounted on the tailstock to drill a hole at the workpiece's center of rotation. To prevent high-speed cutting during machining, which could affect part machining accuracy, an ejector tailstock is required to secure the workpiece.

[0004] The Chinese invention patent with publication number CN117773169A discloses a machine tool tailstock and machine tool that can protect the ejector pin. The ejector pin body is installed inside a protective tube, thereby reducing the adhesion of iron chips during workpiece machining. During machining, the cam rod rotates to push the electromagnet to move upward and contact the surface of the protective tube, causing the surface of the protective tube to be magnetized, thereby adsorbing the iron chips to the surface of the protective tube, reducing the contact between the ejector pin body and the iron chips, thereby protecting the ejector pin body. At the same time, the clamping block moves upward and presses against the bottom wall of the protective tube, improving machining stability.

[0005] When the existing equipment is in use, the ejector tailstock is used to move and fix the ejector device through a handwheel and a clamping handle. However, when docking the blades, the blades are long, which makes it impossible to accurately align the blades during docking, resulting in unbalanced vibration during operation. At the same time, during high-speed cutting, the interaction between the cutting force, the tool and the blade may cause the tailstock to vibrate, resulting in a decrease in the blade processing accuracy. Therefore, a high-rigidity ejector tailstock for blade processing has been developed. Summary of the Invention

[0006] The object of the present invention is to provide a high-rigidity ejector tailstock for blade machining to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a high-rigidity ejector tailstock for blade processing, comprising an operating table, an adjustment block is slidably mounted on the upper end of the operating table, and an ejector is slidably mounted on one side of the adjustment block;

[0008] A pre-positioning assembly is assembled in the inner cavity of the adjusting block, and a moving rod is fixedly installed on one side of the pre-positioning assembly, the end of the moving rod is connected to the inner wall of the adjusting block, and the blade end is centered by the pre-positioning assembly;

[0009] A protective component is assembled on the inner wall of the adjusting block, and provides buffer protection for the ejector pin through the protective component;

[0010] The pre-positioning assembly includes a fixed plate connected to the moving rod, and multiple groups of positioning rods are fixedly installed on the end of the fixed plate, and the multiple groups of positioning rods are evenly distributed on the fixed plate. At the same time, an adjustment plate is rotatably installed on the outer surface of the positioning rod, and the blade end is limited by the rotation of the adjustment plate;

[0011] A docking block is fixedly installed on one end of the adjustment plate away from the positioning rod, and an arc-shaped plate is fixedly installed on the end of the docking block. A slot is opened through one side of the arc-shaped plate, and a rubber ring is slidably installed on the inner wall of the slot. The blade end is centered by stretching the rubber ring.

[0012] As a further optimization solution of the present invention, a circular ring is slidably installed at the end of the fixed plate, and an arc groove corresponding to the adjustment plate is opened at the end of the circular ring. At the same time, the inner wall of the arc groove is slidably connected to the outer surface of the positioning rod.

[0013] As a further optimization solution of the present invention, a limiting rod is fixedly installed at the end of the ring and located between two adjacent arc-shaped grooves. An adjustment groove is opened at the end of the adjustment plate, and the inner wall of the adjustment groove is slidably connected to the outer surface of the limiting rod.

[0014] As a further optimization solution of the present invention, the protective assembly includes a movable plate connected to the adjustment block, a fixed rod is fixedly installed at the end of the movable plate, and the end of the fixed rod away from the movable plate is slidably connected to the end of the ring.

[0015] As a further optimization solution of the present invention, a plurality of groups of connection blocks are fixedly installed at the end of the movable plate, and the plurality of groups of connection blocks are evenly distributed at the end of the movable plate.

[0016] As a further optimization solution of the present invention, a protection rod is rotatably mounted on the end of the connecting block, and a movable plate is rotatably mounted on the end of the protection rod.

[0017] As a further optimization solution of the present invention, the cross section of the movable plate is L-shaped, and a slider is fixedly installed at the lower end of the movable plate 35 .

[0018] As a further optimization solution of the present invention, the inner wall of the lower end of the sliding block is slidably connected to a guide block, and the lower end of the guide block is fixedly mounted with a support plate.

[0019] As a further optimization solution of the present invention, a buffer is fixedly installed on the lower end of the support plate, and the lower end of the buffer is fixedly connected to the upper end of the movable plate.

[0020] As a further optimization solution of the present invention, a bonding plate is fixedly installed on the end of the movable plate, and the inner wall of the bonding plate is slidably connected to the outer surface of the ejector pin.

[0021] Compared with the prior art, the present invention provides a high-rigidity ejector tailstock for blade processing, which has the following beneficial effects: when the adjustment plate moves, the docking block synchronously drives the arc plate to move, and a cylindrical shape is formed by multiple groups of arc plates. The rubber ring is limited by the slots opened on the arc plate, so that when the arc plate moves, the rubber ring is stretched. At the same time, during the stretching process, the gap between the two adjacent arc plates is filled by the rubber ring, ensuring that the overall stability remains when the blade end is centered.

[0022] Since a support plate is fixedly installed at the lower end of the slider, when the slider moves under force, the support plate is synchronously driven to move, thereby squeezing the buffer member set at the end of the support plate to buffer the vibration of the moving plate and reduce the deformation of the blade during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 A first schematic diagram of the structure of a pre-positioning component and a protection component provided in an embodiment of the present invention;

[0026] Figure 3 A second schematic diagram of the structure of the pre-positioning component and the protection component provided in an embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of the internal structure of the pre-positioning component and the protection component provided in an embodiment of the present invention;

[0028] Figure 5 A first cross-sectional view of the internal structure of a pre-positioning assembly provided in an embodiment of the present invention;

[0029] Figure 6 A second cross-sectional view of the internal structure of the pre-positioning assembly provided in an embodiment of the present invention;

[0030] Figure 7 A third cross-sectional view of the internal structure of the pre-positioning assembly provided in an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the structure of a protection component provided in an embodiment of the present invention;

[0032] Figure 9 A cross-sectional view of the internal structure of the protective component provided in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Operating table; 2. Pre-positioning assembly; 3. Protective assembly; 11. Adjusting block; 12. Ejector pin; 13. Moving rod; 21. Fixed plate; 22. Positioning rod; 23. Adjusting plate; 231. Adjusting groove; 24. Circular ring; 241. Arc groove; 25. Limiting rod; 26. Docking block; 27. Arc plate; 271. Slot; 28. Rubber ring; 31. Movable plate; 32. Fixed rod; 33. Connecting block; 34. Protective rod; 35. Moving plate; 36. Support plate; 361. Buffer; 37. Guide block; 38. Slider; 39. Laminating plate. DETAILED DESCRIPTION

[0035] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example: See Figures 1-9 A high-rigidity ejector tailstock for blade processing includes an operating table 1, an adjusting block 11 is slidably mounted on the upper end of the operating table 1, and an ejector 12 is slidably mounted on one side of the adjusting block 11.

[0038] In this solution, a slide rail is provided at the upper end of the operating table 1, and the upper end of the slide rail is slidably connected to the lower end of the adjustment block 11. At the same time, an electric telescopic rod or other equipment with a telescopic function is fixedly installed on the upper end of the operating table 1 and is connected to an external control device. The output end of the electric telescopic rod is connected to one side of the adjustment block 11, so that the adjustment block 11 is driven to move on the operating table 1 through the electric telescopic rod until it reaches the optimal position and stops.

[0039] Among them, the adjustment block 11 is provided with a device with a telescopic function such as an electric telescopic rod, or a manually adjustable component such as a screw, so as to adjust the horizontal position of the ejector pin 12 so that the ejector pin 12 remains stable as a whole after being fitted with the blade. This technology adopts the existing technology and will not be described in detail here.

[0040] Furthermore, a pre-positioning assembly 2 is assembled in the inner cavity of the adjustment block 11, and a moving rod 13 is fixedly installed on one side of the pre-positioning assembly 2. The end of the moving rod 13 is slidably connected to the inner wall of the adjustment block 11, and the blade end is centered by the pre-positioning assembly 2;

[0041] Specifically, the moving rod 13 is located inside the adjustment block 11, and the end of the moving rod 13 is fixedly provided with a device with a telescopic function such as an electric telescopic rod, which can drive the moving rod 13 to move inside the adjustment block 11 and synchronously drive the pre-positioning component 2 to move until it reaches the optimal position.

[0042] Furthermore, the pre-positioning assembly 2 includes a fixed plate 21 fixedly connected to the moving rod 13, and multiple groups of positioning rods 22 are fixedly installed on the end of the fixed plate 21, and the multiple groups of positioning rods 22 are evenly distributed on the fixed plate 21. At the same time, an adjustment plate 23 is rotatably installed on the outer surface of the positioning rod 22, and the blade end is limited by rotating the adjustment plate 23.

[0043] In this embodiment, when the adjustment plate 23 is moved by force, the adjustment plate 23 is limited by the positioning rod 22, so that the adjustment plate 23 rotates around the positioning rod 22, and at the same time, the adjustment plate 23 surrounding the fixed plate 21 preliminarily limits the blade end.

[0044] A through hole is formed at the end of the fixing plate 21 , and the ejector pin 12 is entirely located in the inner cavity of the through hole. When the blade is positioned, the ejector pin 12 is moved to the end of the blade to assist in positioning the blade.

[0045] Furthermore, a docking block 26 is fixedly installed at one end of the adjustment plate 23 away from the positioning rod 22, and an arc-shaped plate 27 is fixedly installed at the end of the docking block 26. A slot 271 is opened through one side of the arc-shaped plate 27, and a rubber ring 28 is slidably installed on the inner wall of the slot 271. The blade end is centered by stretching the rubber ring 28.

[0046] Specifically, the rubber ring 28 can be stretched and contracted. When the adjustment plate 23 moves, the docking block 26 synchronously drives the curved plate 27 to move. A cylindrical shape is formed by multiple groups of curved plates 27, and the rubber ring 28 is limited by the slots 271 opened on the curved plates 27. When the curved plates 27 move, the rubber ring 28 is stretched. At the same time, during the stretching process, the rubber ring 28 fills the gap between two adjacent curved plates 27 to ensure that the overall stability remains when the blade end is centered.

[0047] Furthermore, a circular ring 24 is slidably mounted on the end of the fixing plate 21 . An arcuate groove 241 corresponding to the adjustment plate 23 is formed on the end of the circular ring 24 . The inner wall of the arcuate groove 241 is slidably connected to the outer surface of the positioning rod 22 .

[0048] Specifically, when the circular ring 24 rotates, the positioning rod 22 is limited by the arc-shaped groove 241 provided at the end thereof, thereby ensuring that the adjustment plate 23 remains stable when the circular ring 24 rotates.

[0049] Furthermore, a limiting rod 25 is fixedly installed at the end of the ring 24 and located between two adjacent arc-shaped grooves 241 . An adjusting groove 231 is formed at the end of the adjusting plate 23 , and the inner wall of the adjusting groove 231 is slidably connected to the outer surface of the limiting rod 25 .

[0050] The outer surface of the ring 24 is provided with protrusions and other frictional components, so that no sliding occurs when the ring 24 is rotated. A motor can also be provided at the end of the ring 24, and the transmission shaft at the output end of the motor is engaged with the outer surface of the ring 24 to drive the ring 24 to rotate.

[0051] Specifically, when the ring 24 rotates, it synchronously drives the limit rod 25 fixedly installed at its end to move. Since the outer surface of the limit rod 25 is slidingly connected to the inner wall of the adjustment groove 231, when the limit rod 25 moves, it drives the adjustment plate 23 to rotate around the positioning rod 22 and adjusts the space around the ejector pin 12 to make it suitable for different scenarios.

[0052] Through the precise locking of the pre-positioning component 2 and the cooperation of the ejector pin, the blade can ensure a stable position during the processing, thereby avoiding errors caused by inaccurate positioning.

[0053] The pre-positioning component 2 provides precise initial positioning, which can reduce the subsequent repair work caused by processing errors and can adjust the buffer force more finely. At the same time, it can dynamically adjust the position and force state of the ejector pin in real time according to the slight changes generated during the processing to ensure the normal processing of the blade.

[0054] During the blade processing, especially high-intensity cutting or grinding operations, large processing forces will be generated, which can easily cause blade deformation; the protective component 3 effectively reduces the impact of external forces on the blade by providing a buffering effect, thereby avoiding deformation; the pre-positioning component 2 ensures that the blade is always in the correct position during the processing process, avoiding additional forces due to inaccurate positioning, and further reducing the risk of deformation.

[0055] The pre-positioning assembly 2 and the protective assembly 3 work together with the ejector pin to control the blade's stress during machining, ensuring that the blade does not undergo unnecessary displacement or deformation when subjected to machining forces. This balances the pressure during machining and improves overall stability. Furthermore, the combined use of the pre-positioning assembly 2 and the protective assembly 3 ensures the initial machining accuracy of the blade and reduces unnecessary subsequent repair work.

[0056] An annular groove is provided at one end of the ring 24 away from the adjustment plate 23, and the inner wall of the annular groove is slidably connected to the outer surface of the fixing rod 32. At the same time, a baffle is fixedly installed at the end of the fixing rod 32, and the fixing rod 32 is confined to the inner wall of the annular groove by the baffle, so that the pre-positioning component 2 and the protective component 3 are connected together.

[0057] Furthermore, the protective component 3 is assembled on the inner wall of the adjusting block 11, and the ejector pin 12 is buffered and protected by the protective component 3; the protective component 3 includes a movable plate 31 connected to the adjusting block 11, and a fixed rod 32 is fixedly installed at the end of the movable plate 31, and the end of the fixed rod 32 away from the movable plate 31 is slidably connected to the end of the ring 24.

[0058] In this embodiment, a snap-in block is provided at the end of the movable plate 31. By snapping the snap-in block with the inside of the adjustment block 11, when the movable rod 13 moves, the protective assembly 3 is synchronously driven to move as a whole, and the movable plate 31 is supported by the snap-in block.

[0059] An adjusting rod is provided on the inner wall of the adjusting block 11 . The adjusting rod is composed of a cylinder and a round rod. The outer surface of the round rod is slidably connected to the inner wall of the cylinder. The end of the round rod is connected to the clamping block, and the end of the cylinder is fixedly connected to the adjusting block 11 .

[0060] Furthermore, multiple sets of connecting blocks 33 are fixedly mounted to the ends of the movable plate 31, and these sets of connecting blocks 33 are evenly distributed across the ends of the movable plate 31. A protective rod 34 is rotatably mounted to the ends of the connecting blocks 33, and a movable plate 35 is rotatably mounted to the ends of the protective rod 34. The movable plate 35 has an L-shaped cross-section, and a slider 38 is fixedly mounted to the lower end of the movable plate 35.

[0061] Specifically, when the movable plate 35 is moved by force, the end of the movable plate 35 is driven to move on the outer surface of the slider 38. Since the end of the movable plate 35 is rotatably connected to the connecting block 33 through the protective rod 34, the movable plate 35 moves toward one side of the movable plate 31.

[0062] Furthermore, the inner wall of the lower end of the slider 38 is slidably connected to a guide block 37, and the lower end of the guide block 37 is fixedly mounted with a support plate 36. The lower end of the support plate 36 is fixedly mounted with a buffer member 361, and the lower end of the buffer member 361 is fixedly connected to the upper end of the movable plate 31.

[0063] Specifically, the buffer member 361 is an existing telescopic rod with a built-in spring body, which will not be described in detail here. When the buffer member 361 is squeezed by force, it is buffered by the spring provided inside.

[0064] Since the support plate 36 is fixedly mounted on the lower end of the slider 38 , when the slider 38 is moved under force, the support plate 36 is simultaneously driven to move, thereby squeezing the buffer member 361 provided at the end of the support plate 36 to buffer the vibration received by the movable plate 35 .

[0065] Furthermore, a bonding plate 39 is fixedly mounted on the end of the movable plate 35 , and the inner wall of the bonding plate 39 is slidably connected to the outer surface of the ejector pin 12 .

[0066] Specifically, the outer surface of the bonding plate 39 is provided with rubber or other components with a cushioning effect, and the cross-section of the bonding plate 39 is arc-shaped, so that it can wrap the outer surface of the ejector pin 12, so that the vibration generated during processing is transmitted to the movable plate 35, and cooperates with the buffer member 361 to cushion the vibration, thereby reducing the deformation of the blade during processing.

[0067] The control device can use a single-chip microcomputer as the control terminal. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (MCU), consisting of an arithmetic unit, a controller, memory, and input / output devices, equivalent to a miniature computer. Compared to the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its greatest advantages are its small size, allowing it to be placed inside the instrument, low memory capacity, simple input / output interfaces, and low functional consumption.

[0068] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A high-rigidity ejector tailstock for blade processing, characterized in that: It comprises an operating table (1), an adjusting block (11) is slidably mounted on the upper end of the operating table (1), and a thimble (12) is slidably mounted on one side of the adjusting block (11); A pre-positioning component (2) is assembled in the inner cavity of the adjusting block (11), and a moving rod (13) is fixedly installed on one side of the pre-positioning component (2), and the end of the moving rod (13) is connected to the inner wall of the adjusting block (11), and the blade end is centered by the pre-positioning component (2); A protective component (3) is assembled on the inner wall of the regulating block (11), and the ejector pin (12) is buffered and protected by the protective component (3); The pre-positioning assembly (2) comprises a fixed plate (21) connected to the moving rod (13), a plurality of groups of positioning rods (22) are fixedly mounted on the end of the fixed plate (21), and the plurality of groups of positioning rods (22) are evenly distributed on the fixed plate (21), and an adjusting plate (23) is rotatably mounted on the outer surface of the positioning rod (22), and the blade end is limited by the rotation of the adjusting plate (23); A circular ring (24) is slidably mounted on the end of the fixing plate (21), and an arc-shaped groove (241) corresponding to the adjusting plate (23) is formed on the end of the circular ring (24), and the inner wall of the arc-shaped groove (241) is slidably connected to the outer surface of the positioning rod (22); The protection assembly (3) includes a movable plate (31) connected to the adjustment block (11), a fixed rod (32) is fixedly mounted on the end of the movable plate (31), and an end of the fixed rod (32) away from the movable plate (31) is slidably connected to the end of the ring (24); A plurality of connection blocks (33) are fixedly mounted on the end of the movable plate (31), and the plurality of connection blocks (33) are evenly distributed on the end of the movable plate (31); A protective rod (34) is rotatably mounted on the end of the connecting block (33), and a movable plate (35) is rotatably mounted on the end of the protective rod (34); The cross section of the movable plate (35) is L-shaped, and a slider (38) is fixedly mounted on the lower end of the movable plate (35); The inner wall of the lower end of the slider (38) is slidably connected to a guide block (37), and the lower end of the guide block (37) is fixedly mounted with a support plate (36); A buffer member (361) is fixedly mounted on the lower end of the support plate (36), and the lower end of the buffer member (361) is fixedly connected to the upper end of the movable plate (31); A bonding plate (39) is fixedly mounted on the end of the movable plate (35), and the inner wall of the bonding plate (39) is slidably connected to the outer surface of the ejector pin (12).

2. The high-rigidity ejector tailstock for blade processing according to claim 1 is characterized in that: A limiting rod (25) is fixedly installed at the end of the circular ring (24) and located between two adjacent arc-shaped grooves (241). An adjusting groove (231) is provided at the end of the adjusting plate (23). The inner wall of the adjusting groove (231) is slidably connected to the outer surface of the limiting rod (25).

3. The high-rigidity ejector tailstock for blade processing according to claim 1 is characterized in that: A docking block (26) is fixedly mounted on one end of the adjustment plate (23) away from the positioning rod (22), and an arc-shaped plate (27) is fixedly mounted on the end of the docking block (26). A slot (271) is provided through one side of the arc-shaped plate (27), and a rubber ring (28) is slidably mounted on the inner wall of the slot (271). The blade end is centered by stretching the rubber ring (28).

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