Tailstock ejector pin mechanism with locking replacement structure

Abstract

The utility model relates to a tailstock thimble mechanism with a locking replacement structure, which belongs to the technical field of tailstock thimble mechanisms and comprises a clamping block mechanism, the clamping block mechanism comprises a connecting shaft, one side of the connecting shaft is fixedly connected with a connecting plate, the upper end of one side, far away from the connecting shaft, of the connecting plate is fixedly connected with a pressing block, and the pressing block is fixedly connected with the locking replacement structure. A protruding block is fixedly connected to the outer wall of the lower end of the connecting plate, an elastic piece is arranged at the lower end of the connecting plate, bolts are connected to the two sides of the elastic piece in a threaded mode, a clamping needle is movably connected to the connecting plate, and a concave-convex ring is arranged on the outer wall of the lower end of the clamping needle. The tailstock ejector pin mechanism solves the problems that an existing tailstock ejector pin mechanism is abraded after being used for a long time and shakes when used for supporting a machined part, a fixed connection mode and a bolt connection mode are adopted for the ejector pin, the ejector pin cannot be rapidly detached and replaced, and the device is not practical enough.

Description

Technical Field

[0001] The utility model relates to the technical field of a tailstock ejector mechanism, in particular to a tailstock ejector mechanism with a locking and replacement structure. Background Art

[0002] The tailstock ejector is an important part of the machine tool, usually used to support the workpiece and control the rotation of the workpiece. It is mainly connected to the rotating shaft at the tail of the machine tool and connected to the crossbeam, tailstock and other parts to complete the support and rotation control of the workpiece.

[0003] Existing metal processing machine tools are widely used for cutting, turning, milling and drilling metal materials to achieve the desired shape and size processing goals. Before cutting, the workpiece needs to be accurately positioned. The current common method is to use an ejector mechanism, which usually requires the center hole of the workpiece to be turned before processing, and the ejector is fixed by fixing or bolting, and then the tapered surface of the ejector is used for auxiliary support to ensure the stability of the cutting operation.

[0004] However, there is a problem with the current ejector mechanism, that is, the ejector is usually fixed or bolted, which makes the ejector stable when supporting, but also loses the function of quickly disassembling and replacing the ejector. Because the ejector may wear after long-term use, it causes slight shaking when supporting the workpiece. For workpieces that require fine processing, even a slight difference is unacceptable. Therefore, the ejector needs to be disassembled and replaced, which cannot be achieved by the current mechanism.

[0005] The solution to this problem requires designing a mechanism that can quickly disassemble and replace the ejector pin while maintaining the stability of the machine tool to ensure high precision and stability during the machining process. Utility Model Content

[0006] The purpose of the utility model is to solve the problem in the prior art that the existing tailstock ejector mechanism will wear out after long-term use, and will shake when supporting the workpiece, and the ejector adopts a fixed connection and a bolt connection method, so that the ejector cannot be quickly disassembled and replaced, making the device not practical enough, and provides a tailstock ejector mechanism with a locking replacement structure.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tailstock ejector mechanism with a locking and replacement structure, comprising: a block mechanism, the block mechanism comprises a connecting shaft, a connecting plate is fixedly connected to one side of the connecting shaft, a pressing block is fixedly connected to the upper end of the connecting plate away from the connecting shaft, a convex block is fixedly connected to the outer wall of the lower end of the connecting plate, a spring sheet is provided at the lower end of the connecting plate, bolts are threadedly connected to the two sides of the spring sheet, a card pin is movably connected to the connecting plate, a concave-convex ring is provided on the outer wall of the lower end of the card pin, a connecting piece is movably connected to the upper end of the block mechanism, an ejector body is movably connected to one side of the inner wall of the connecting piece, the connecting piece and the ejector body are movably connected through the block mechanism, the outer wall of the connecting piece is connected to a shell, a slider is fixedly connected to the bottom end of the shell, a limiting ring 1 is movably connected to one side of the shell, a cylinder is provided on the side of the limiting ring 1 away from the shell, and a limiting ring 2 is provided on the side of the shell away from the limiting ring 1, a base is movably connected to the lower end of the slider, and a sliding groove is provided on the outer wall of the upper end of the base.

[0008] As a preferred embodiment, the sliding block is slidably connected to a side wall of a sliding groove provided on an outer wall of an upper end of the base.

[0009] As a preferred implementation, the spring piece is movably connected to one side of the inner wall of the connecting piece via a bolt.

[0010] As a preferred implementation, one side of the spring piece is correspondingly connected to a concave-convex ring provided on the outer wall of the lower end of the card pin.

[0011] As a preferred implementation, the card pin passes through the connecting plate and the protrusion, and the lower end of the card pin is movably connected to the ejector body.

[0012] As a preferred implementation, the connecting shaft is movably connected to one side of the inner wall of the connecting piece.

[0013] As a preferred implementation, the card pin and the pressing block are both located on one side of the outer wall of the upper end of the connector.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. By designing a pressing block, the pressing block will drive the connecting plate and the protrusion to move downward through the limit of the connecting shaft. The protrusion will act on the spring sheet when it moves downward. Since the spring sheet is connected to the inner wall of the connecting piece through bolts and cannot move, when the card needle is pulled out upward, the two paddles in the middle of the spring sheet will shrink inward and limit the concave-convex ring on the outer wall of the card needle, so that the card needle cannot be pulled out. In this regard, during the downward movement of the protrusion, the two paddles in the middle of the spring sheet will be pushed downward first, so that the gap between the two paddles is larger than the cross section of the concave-convex ring. At this time, the card needle is pulled out again, and the card needle leaves the ejector body, and the ejector body can be quickly disassembled and replaced;

[0016] 2. A slider is provided at the lower end of the shell through design, and a base is provided at the lower end of the slider. A slide groove is provided at the upper end of the base, wherein the slide groove is correspondingly connected to the slider. When the shell slides, the slider can slide steadily in the slide groove. This method ensures that the shell will not have an angular deviation when moving, and enables the ejector pin body to correspond to the center hole of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a structural schematic diagram of a tailstock ejector mechanism with a locking and replacement structure.

[0018] Figure 2 The utility model provides a structural disassembly schematic diagram of a tailstock ejector mechanism with a locking and replacement structure.

[0019] Figure 3 The utility model provides a disassembled cross-sectional schematic diagram of a connector structure of a tailstock ejector mechanism with a locking and replacement structure.

[0020] Figure 4 The utility model provides a schematic diagram of the disassembly of a block mechanism structure of a tailstock ejector mechanism with a locking and replacement structure.

[0021] Figure 5 The utility model provides a disassembled schematic diagram of the bottom structure of a tailstock ejector mechanism with a locking and replacement structure.

[0022] Legend:

[0023] 1. Shell; 2. Slider; 3. Limiting ring 1; 4. Cylinder; 5. Limiting ring 2; 6. Connector; 7. Block mechanism; 8. Ejector body; 9. Base; 10. Slide;

[0024] 71. Connecting shaft; 72. Connecting plate; 73. Pressing block; 74. Bump; 75. Spring piece; 76. Bolt; 77. Pin; 78. Concave and convex ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1-5As shown, the utility model provides a technical solution: a tailstock ejector mechanism with a locking and replacement structure, comprising: a clamping block mechanism 7, the clamping block mechanism 7 includes a connecting shaft 71, a connecting plate 72 is fixedly connected to one side of the connecting shaft 71, a pressing block 73 is fixedly connected to the upper end of the connecting plate 72 away from the connecting shaft 71, a protrusion 74 is fixedly connected to the outer wall of the lower end of the connecting plate 72, a spring sheet 75 is provided at the lower end of the connecting plate 72, one side of the spring sheet 75 is correspondingly connected to the concave-convex ring 78 provided on the outer wall of the lower end of the clamping needle 77, bolts 76 are threadedly connected on both sides of the spring sheet 75, a clamping needle 77 is movably connected to the connecting plate 72, the clamping needle 77 passes through the connecting plate 72 and the protrusion 74, and a concave-convex ring 78 is provided on the outer wall of the lower end of the clamping needle 77.

[0028] In this example, the existing metal processing machine tools are designed to be widely used for cutting, turning, milling and drilling operations on metal materials to achieve the processing goals of the required shape and size. Before cutting, the workpiece needs to be accurately positioned. The current common method is to use a ejector mechanism, which usually requires the center hole of the workpiece to be turned before processing, and the ejector is fixed by fixing or bolting 76, and then the tapered surface of the ejector is used for auxiliary support to ensure the stability of the cutting operation. However, there is a problem with the current ejector mechanism, that is, the ejector is usually connected by a fixed connection or a bolt 76 connection, which makes the ejector stable when supported, but also loses the function of quickly disassembling and replacing the ejector. Because the ejector may wear after long-term use, it causes slight shaking when the workpiece is supported. For workpieces that require fine processing, even a slight difference is unacceptable. Therefore, it is necessary to disassemble and replace the ejector, but the current mechanism cannot achieve this function, so a block mechanism 7 is set for this;

[0029] When the locking nut 73 is in the state of being clamped in the locking nut 76, the locking nut 73 is clamped in the state of being loosened and the locking nut 73 is loosened when the locking nut 73 is in the state of being loosened. When the locking pin 77 is inserted into the connecting plate 72 and the protrusion 74, the two locking pins in the middle of the spring sheet 75 will be pushed downward. At this time, the bottom end of the locking pin 77 will be connected to the ejector body 8, and the ejector body 8 will be fixed in position. However, when the locking pin 77 is pulled upward, the concave-convex ring 78 provided on the outer wall of the locking pin 77 will cause the two locking pins in the middle of the spring sheet 75 to shrink inward, and the locking pin 77 cannot be pulled out at this time. This method can better ensure the stability of the connection between the locking pin 77 and the ejector body 8, and will not cause the ejector body 8 to shake due to vibration and wear. When the ejector body 8 needs to be disassembled, the pressing block 73 can be pressed, and the pressing block 73 will drive the connecting plate 72, and the connecting plate 72 will drive the protrusion 74 to act downward and act on the spring 75, so that the two paddles are stretched outward and larger than the cross-section of the concave-convex ring 78. At this time, the card pin 77 can be smoothly taken out, and then the disassembly and replacement operation of the ejector body 8 can be completed.

[0030] Example 2

[0031] like Figure 2-5 As shown, the upper end of the clamping block mechanism 7 is movably connected with the connecting piece 6, the connecting shaft 71 is movably connected to one side of the inner wall of the connecting piece 6, the clamping needle 77 and the pressing block 73 are both located at one side of the outer wall of the upper end of the connecting piece 6, the spring piece 75 is movably connected to one side of the inner wall of the connecting piece 6 through a bolt 76, the inner wall of the connecting piece 6 is movably connected with the ejector body 8, the lower end of the clamping needle 77 is movably connected to the ejector body 8, the connecting piece 6 and the ejector body 8 are movably connected through the clamping block mechanism 7, the outer wall of the connecting piece 6 is connected to the shell 1, the bottom end of the shell 1 is fixedly connected with a slider 2, one side of the shell 1 is movably connected with a limit ring 1 3, the side of the limit ring 1 3 away from the shell 1 is provided with a cylinder 4, the side of the shell 1 away from the limit ring 1 3 is provided with a limit ring 2 5, the lower end of the slider 2 is movably connected with a base 9, the upper outer wall of the base 9 is provided with a slide groove 10, and the slider 2 is slidably connected to the side wall of the slide groove 10 provided on the upper outer wall of the base 9.

[0032] In this example, when the machine tool is cut, a pin mechanism is required to support the machine tool. However, due to the different sizes of the workpieces, in order to support the workpieces, they need to be moved to appropriate positions before subsequent operations can be performed. For this, a limit ring 1 3 and a limit ring 2 5 are provided on both sides of the shell 1, and a connecting member 6 is provided on one side of the inner wall of the shell 1. A clamping block mechanism 7 and a pin body 8 are provided on one side of the inner wall of the connecting member 6. The limit ring 1 3 and the limit ring 2 5 provided on both sides of the shell 1 can limit the components in the shell 1, and a cylinder 4 is provided on the side of the limit ring 1 3 away from the shell 1. The other side of the cylinder 4 is fixedly connected to an external device. When the cylinder 4 is started, the limit ring 1 3 and the shell 1 will be driven to move laterally, and then the connecting member 6, the clamping block mechanism 7 and the pin body 8 provided in the shell 1 will be driven to move laterally and move to appropriate positions, so that the workpiece can be supported and subsequent cutting operations can be performed.

[0033] However, the shell 1 will have an angular deviation when moving, so that the ejector body 8 cannot correspond to the center hole of the workpiece. For this reason, a slider 2 is provided at the lower end of the shell 1, and a base 9 is provided at the lower end of the slider 2. A slide groove 10 is provided at the upper end of the base 9, wherein the slide groove 10 is correspondingly connected to the slider 2. When the shell 1 slides, the slider 2 can slide steadily in the slide groove 10. This method ensures that the shell 1 will not have an angular deviation when moving, and enables the ejector body 8 to correspond to the center hole of the workpiece.

[0034] Working principle:

[0035] like Figure 1-5As shown, when the utility model is in use, the card pin 77 is passed through the connecting plate 72 and the protrusion 74 and inserted into the ejector body 8. At this time, the ejector body 8 can be fixed in position. After long-term use, the ejector body 8 needs to be disassembled and replaced due to wear. For this purpose, it is necessary to press the pressing block 73. The pressing block 73 will drive the connecting plate 72 and the protrusion 74 to move downward through the limit of the connecting shaft 71. The protrusion 74 will act on the spring piece 75 when it moves downward. Since the spring piece 75 is connected to the inner wall of the connecting member 6 through the bolt 76, The two paddles in the middle of the spring sheet 75 are connected and cannot move. When the card needle 77 is pulled out upward, the two paddles in the middle of the spring sheet 75 will shrink inward and limit the concave-convex ring 78 provided on the outer wall of the card needle 77, so that the card needle 77 cannot be pulled out. In the process of the protrusion 74 moving downward, the two paddles in the middle of the spring sheet 75 will be pushed downward first, so that the gap between the two paddles is larger than the cross section of the concave-convex ring 78. At this time, the card needle 77 is pulled out again, and the card needle 77 leaves the ejector body 8, and the ejector body 8 can be disassembled and replaced. After replacement, the limit ring 1 3 and the limit ring 2 5 are respectively connected to the two sides of the shell 1, and then the connecting piece 6, the block mechanism 7 and the ejector body 8 provided in the shell 1 can be fixed, and the cylinder 4 can be started. The cylinder 4 will drive the shell 1 on one side of the limit ring 1 3 to move. In order to prevent the shell 1 from deviating during the movement, so that the ejector body 8 cannot accurately correspond to the center hole opened on the workpiece, a slider 2 is provided at the lower end of the shell 1, and a base 9 is provided at the lower end of the slider 2. A slide groove 10 is provided at the upper end of the base 9. The slider 2 slides on the inner wall of the slide groove 10. At this time, it can be ensured that the shell 1 will not deviate during movement, and then the ejector body 8 can support the workpiece.

[0036] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A tailstock ejector mechanism with a locking and replacement structure, characterized in that: include: The card block mechanism (7) comprises a connecting shaft (71), one side of the connecting shaft (71) is fixedly connected with a connecting plate (72), the upper end of the connecting plate (72) away from the connecting shaft (71) is fixedly connected with a pressing block (73), the outer wall of the lower end of the connecting plate (72) is fixedly connected with a convex block (74), the lower end of the connecting plate (72) is provided with a spring sheet (75), the two sides of the spring sheet (75) are threadedly connected with bolts (76), the connecting plate (72) is movably connected with a card pin (77), the outer wall of the lower end of the card pin (77) is provided with a concave-convex ring (78), the upper end of the card block mechanism (7) is movably connected with a connecting pin (77), and the lower end of the card pin (77) is provided with a concave-convex ring (78). A connecting member (6) is provided, one side of the inner wall of the connecting member (6) is movably connected to a pin body (8), the connecting member (6) and the pin body (8) are movably connected via a clamping block mechanism (7), the outer wall of the connecting member (6) is connected to a housing (1), the bottom end of the housing (1) is fixedly connected to a slider (2), one side of the housing (1) is movably connected to a limit ring (3), a cylinder (4) is provided on the side of the limit ring (3) away from the housing (1), a limit ring (5) is provided on the side of the housing (1) away from the limit ring (3), the lower end of the slider (2) is movably connected to a base (9), and a slide groove (10) is provided on the upper outer wall of the base (9).

2. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: The slide block (2) is slidably connected to the side wall of a slide groove (10) provided on the outer wall of the upper end of the base (9).

3. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: The spring sheet (75) is movably connected to one side of the inner wall of the connecting member (6) via a bolt (76).

4. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: One side of the spring sheet (75) is correspondingly connected to a concave-convex ring (78) provided on the outer wall of the lower end of the clamping needle (77).

5. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: The clamping pin (77) passes through the connecting plate (72) and the protrusion (74), and the lower end of the clamping pin (77) is movably connected to the ejector body (8).

6. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: The connecting shaft (71) is movably connected to one side of the inner wall of the connecting member (6).

7. The tailstock ejector mechanism with a locking and replacement structure according to claim 1, characterized in that: The clamping pin (77) and the pressing block (73) are both located on one side of the outer wall of the upper end of the connecting member (6).

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