A device for supporting shaft parts on a machine tool

Abstract

The utility model provides a kind of device for being set on machine tool to support shaft parts, shaft parts include outer wall, and the passage formed by the outer wall, machine tool includes the thimble being set in one end of shaft parts, to be fixed to shaft parts.Equipment includes the elastic mechanism being set in passage, and allow to expand along the circumference, to and outer wall mutually abut together, and the fixed mechanism being fixed in elastic mechanism in selected mode, to exert force along the circumference to elastic mechanism.Wherein, receiving hole is set on fixed mechanism along its axial direction, receiving hole is configured to allow to accommodate thimble, and and thimble are relatively fixed together, so that thimble supports shaft parts.By this way, make in the cooperation of elastic mechanism, fixed mechanism, thimble can make the device applicable to different sizes of shaft parts.

Description

Technical Field

[0001] This utility model relates to the field of shaft parts processing technology, and in particular to a device installed on a machine tool for supporting shaft parts. Background Technology

[0002] like Figure 1 As shown, the shaft-like part 10 typically includes an outer wall 101 and a channel 102 formed by the outer wall 101. Meanwhile, the machine tool 20 includes a chuck 201 disposed at one end of the shaft-like part 10 for fixing relative to it, and a center disposed at the other end of the shaft-like part 10 for selectively abutting against it axially to support it. In this way, the shaft-like part 10 can be stably mounted on the machine tool 20. Thus, machining of the shaft-like part 10 can be achieved.

[0003] In actual industrial production, the channel 102 and the ejector pin are generally not compatible. Therefore, when supporting shaft-type parts through the ejector pin, a plug is usually fixedly installed in the channel 102 so that the ejector pin and the plug abut against each other, thereby supporting the shaft-type part 10.

[0004] In existing technologies, plugs are generally set to a fixed size, and their size is designed to fit a shaft part 10 of a fixed size. Although this method can provide support for the shaft part 10, it requires replacing the plug with a matching plug for each shaft part 10, resulting in poor plug applicability and high machining costs for shaft parts. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for supporting shaft-type parts on a machine tool. To achieve the above objective, this utility model adopts the following technical solution: A device for supporting shaft-like parts on a machine tool, the shaft-like parts including an outer wall and a channel formed by the outer wall, the machine tool including an ejector pin disposed at one end of the shaft-like parts for fixing the shaft-like parts. The device includes an elastic mechanism disposed within the channel and allowed to expand circumferentially to abut against an outer wall, and a fixing mechanism selectively fixed within the elastic mechanism to apply a force to the elastic mechanism circumferentially. The fixing mechanism has a receiving hole along its axial direction, the receiving hole being configured to accommodate a ejector pin and be fixed together with the ejector pin so that the ejector pin supports the shaft-type parts.

[0006] Furthermore, the receiving hole includes a mating portion, the radial distance of which is configured to gradually decrease as it moves away from the ejector pin, so as to form a surface contact with the ejector pin.

[0007] Furthermore, the receiving hole also includes a receiving portion communicating with the mating portion, the receiving portion being configured to extend axially to form a cavity for receiving the end of the ejector pin.

[0008] Furthermore, the elastic mechanism includes a limiting ring and a plurality of fitting portions with curvatures corresponding to the radial inner side of the outer wall, arranged along the contour of the radial inner side of the limiting ring, such that each fitting portion expands circumferentially when subjected to a force from the fixing mechanism and abuts against the outer wall.

[0009] Furthermore, the radial distance of the outer radial side of the limiting ring is configured to be greater than the radial distance of the outer edge of the outer wall, so that the limiting ring allows the movement of the fitting portion continuously away from the ejector pin within the channel to be restricted.

[0010] Furthermore, a groove is provided on the limiting ring, which extends axially to the fitting part, so that when the elastic mechanism is subjected to the force from the fixing mechanism, both the fitting part and the limiting ring can expand circumferentially to distribute the load and balance the stress.

[0011] Furthermore, the thickness of several of the bonding portions away from the ejector pin is configured to be greater than the thickness near the ejector pin, so that the radial distance formed by the several bonding portions gradually decreases in the direction away from the ejector pin.

[0012] Furthermore, the fixing mechanism includes a fixing plate, the receiving hole is formed by the fixing plate, and the radial distance of the fixing plate continuously decreases in the direction away from the ejector pin, so that when the fixing plate is located within the elastic mechanism, the fixing plate can abut against the elastic mechanism in a surface contact manner, and the elastic mechanism can restrict the continuous movement of the fixing mechanism in the direction away from the ejector pin.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention includes an elastic mechanism located within the channel of a shaft-like part, allowing circumferential expansion for contact with the shaft-like part, and a fixing mechanism selectively fixed within the elastic mechanism to apply a circumferential force to it. The fixing mechanism has an axially oriented receiving hole configured to accommodate a ejector pin and be fixed to it, thus supporting the shaft-like part. This arrangement, through the cooperation of the elastic mechanism, fixing mechanism, and ejector pin, allows the device to be used with shaft-like parts of different sizes. This improves the applicability of the device and reduces the cost of machining shaft-like parts. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the device for supporting shaft-type parts on a machine tool, the shaft-type parts, and the machine tool, which are configured together in accordance with the present invention. Figure 2 This is a schematic diagram of the overall structure of the elastic mechanism in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the overall structure of the fixing mechanism in an embodiment of this utility model.

[0015] In the above figures: shaft part 10, including outer wall 101, channel 102, machine tool 20, chuck 201, device 100 installed on the machine tool for supporting shaft part, elastic mechanism 1, limiting ring 11, groove 111, fitting part 12, fixing mechanism 2, receiving hole 21, mating part 211, receiving part 212, and fixing plate 22. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a device for supporting shaft-type parts installed on a machine tool.

[0018] For convenience, the direction extending along shaft-type parts will be referred to as "axial direction", "horizontal direction" or similar terms, and the direction perpendicular to the "axial direction" will be referred to as "radial direction", "vertical direction" or similar terms.

[0019] like Figure 1 As shown, the shaft-like part 10 typically includes an outer wall 101 and a channel 102 formed by the outer wall 101. Meanwhile, the machine tool 20 includes a chuck 201 disposed at one end of the shaft-like part 10 for fixing relative to it, and a center (not shown) disposed at the other end of the shaft-like part 10 for selectively abutting against it axially to support it.

[0020] In this way, the shaft-like part 10 can be stably mounted on the machine tool 20. This enables the machining of the shaft-like part 10. It should be noted that the structure of the machine tool 20, the connection method between it and the shaft-like part 10, and the machining method for the shaft-like part 10 are all well-known to those skilled in the art. Therefore, they will not be described in detail here.

[0021] Figure 1 , 2 The schematic diagram illustrates the overall structure of a device according to the present invention for supporting shaft-type parts on a machine tool. In such a way... Figure 1 In the illustrated embodiment, the device 100 provided on the machine tool for supporting shaft-like parts includes an elastic mechanism 1, which is disposed within the channel 102 and allows circumferential expansion to abut against the outer wall 101.

[0022] At the same time, such as Figure 3 As shown, the device 100 also includes a fixing mechanism 2, which is selectively fixed inside the elastic mechanism 1 to apply a force to the elastic mechanism 1 along the circumferential direction, thereby causing the elastic mechanism 1 to undergo elastic deformation along the circumferential direction, so as to stably fit together with the outer wall 101.

[0023] In this embodiment, as Figure 3 As shown, a receiving hole 21 is provided along its axial direction on the fixing mechanism 2. The receiving hole 21 is configured to accommodate a ejector pin and is fixed relative to the ejector pin so that the ejector pin supports the shaft part. In this way, the shaft part 10 can be fixed on the machine tool with the cooperation of the ejector pin, the device 100 and the chuck 201, thereby realizing stable machining of the shaft part 10.

[0024] Specifically, in this configuration, when a shaft-like part 10 needs to be mounted on the machine tool 20 for machining, one end of the shaft-like part 10 is first mounted on the chuck 201 and fixed thereon. Simultaneously, an elastic mechanism 1 is installed in the channel 102 at the other end of the shaft-like part 10, and a fixing mechanism 2 is installed within the elastic mechanism 1. This completes the arrangement of the device 100.

[0025] At this point, a force is applied to the ejector pin, causing it to move into the receiving hole 21. Then, a force is continuously applied to the ejector pin towards the fixing mechanism 2, causing it to continuously move into the receiving hole 21. During this process, the ejector pin will continuously apply a force to the fixing mechanism 2, causing the fixing mechanism 2 to move towards the elastic mechanism 1.

[0026] During this process, the fixing mechanism 2 applies a force to the elastic mechanism 1 along the circumferential direction, causing the elastic mechanism 1 to deform along the circumferential direction until the elastic mechanism 1 and the outer wall 101 abut against each other. This fixes the device 100 and the shaft part 10 together. Finally, the ejector pin is fixed to the machine tool, thus providing stable support for the shaft part 10. In this configuration, both ends of the bearing part 10 are supported by the chuck 201 and the ejector pin, respectively, allowing the shaft part 10 to be stably mounted on the machine tool.

[0027] In one embodiment, such as Figure 3 As shown, the receiving hole 21 includes a mating portion 211 located at the center of the fixing mechanism 2. In this embodiment, the radial distance of the mating portion 211 is configured to gradually decrease with respect to the direction away from the ejector pin, so as to form a surface contact with the ejector pin. Specifically, the virtual space formed by the mating portion 211 is a trapezoidal or conical structure.

[0028] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the receiving hole 21 also includes a receiving portion 212 communicating with the mating portion 211. The receiving portion 212 is configured to extend axially to form a cavity for receiving the end of the ejector pin. In this way, the end of the ejector pin can be located in the receiving portion 212, and the ejector pin can also abut against the mating portion 211 in a surface contact manner. Thus, the ejector pin can stably support the fixing mechanism 2. It should be noted that the ejector pin is configured with a tapered structure.

[0029] In one embodiment, such as Figure 2 As shown, the elastic mechanism 1 includes a limiting ring 11 and a plurality of contact portions 12 arranged along the radially inner contour of the limiting ring 11. The curvature of each contact portion 12 is configured to be equivalent to the radially inner curvature of the outer wall 101. In this way, each contact portion 12 can expand circumferentially when subjected to a force from the fixing mechanism 2 and abut against the outer wall 101. Therefore, the device 100 can be adapted to channels 102 of different sizes, thereby improving the applicability of the device 100.

[0030] According to a preferred embodiment of the present invention, such as Figure 2 As shown, the radial distance of the outermost part of the limiting ring 11 is configured to be greater than the radial distance of the outer edge of the outer wall 101. In this way, when the elastic mechanism 1 is provided in the channel 102, the limiting ring 11 can restrict the movement of the fitting part 12 continuously away from the ejector pin within the channel 102.

[0031] In one embodiment, such as Figure 2As shown, a slot 111 is also provided on the limiting ring 11, which extends axially to the fitting portion 12. In this way, when the elastic mechanism 1 is subjected to a force from the fixing mechanism 2, both the fitting portion 12 and the limiting ring 11 can expand circumferentially. This disperses the load and balances the stress, thereby ensuring that the elastic mechanism 1 is subjected to uniform force.

[0032] According to a preferred embodiment of the present invention, such as Figure 2 As shown, the distance of the radially inner side formed by the plurality of fitting portions 12 gradually decreases as it moves away from the ejector pin. Specifically, the radially inner side profile formed by each fitting portion 12 has a trapezoidal structure, wherein the thickness of the fitting portion 12 away from the ejector pin is configured to be greater than the thickness near the ejector pin.

[0033] At the same time, such as Figure 3 As shown, the fixing mechanism 2 includes a fixing plate 22, and the receiving hole 21 is formed by the fixing plate 22. The radial distance of the fixing plate 22 continuously decreases along the direction away from the ejector pin. Specifically, the fixing plate 22 is also configured as a trapezoidal structure.

[0034] In this way, when the fixing plate 22 is located within the elastic mechanism 1, the fixing plate 22 and the elastic mechanism 1 can abut against each other in a surface-to-surface contact manner. This allows the fixing mechanism 2 to stably apply force to the elastic mechanism 1. Furthermore, in this configuration, the elastic mechanism 1 can also restrict the continuous movement of the fixing mechanism 2 away from the ejector pin, thereby further ensuring a stable engagement between the elastic mechanism 1 and the fixing mechanism 2.

[0035] The operation of the device 100 for supporting shaft-type parts on a machine tool according to this utility model is as follows.

[0036] First, one end of the shaft part 10 is placed on the chuck 201 and fixed by the chuck 201. Simultaneously, an elastic mechanism 1 is installed in the channel 102 at the other end of the shaft part 10, and a fixing mechanism 2 is installed within the elastic mechanism 1. This completes the arrangement of the device 100.

[0037] At this point, a force is applied to the ejector pin, causing it to move into the receiving hole 21. Then, a force is continuously applied to the ejector pin towards the fixing mechanism 2, causing it to continuously move into the receiving hole 21. During this process, the ejector pin will continuously apply a force to the fixing mechanism 2, causing the fixing mechanism 2 to move towards the elastic mechanism 1.

[0038] During this process, the fixing mechanism 2 applies a force to the elastic mechanism 1 along the circumferential direction, causing the elastic mechanism 1 to deform along the circumferential direction until the elastic mechanism 1 and the outer wall 101 abut against each other. This fixes the device 100 and the shaft part 10 together. Finally, the ejector pin is fixed to the machine tool, thus providing stable support for the shaft part 10. In this configuration, both ends of the bearing part 10 are supported by the chuck 201 and the ejector pin, respectively, allowing the shaft part 10 to be stably mounted on the machine tool.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for supporting a shaft-like part (10) on a machine tool, the shaft-like part (10) including an outer wall (101) and a channel (102) formed by the outer wall (101), the machine tool including a center disposed at one end of the shaft-like part (10) for fixing the shaft-like part (10), Its features are, The device (100) includes an elastic mechanism (1) disposed within the channel (102) and allowed to expand circumferentially to abut against the outer wall (101), and a fixing mechanism (2) selectively fixed within the elastic mechanism (1) to apply force to the elastic mechanism (1) circumferentially. The fixing mechanism (2) has a receiving hole (21) along its axial direction. The receiving hole (21) is configured to accommodate the ejector pin and is fixed to it so that the ejector pin supports the shaft part.

2. The device for supporting shaft-like parts on a machine tool according to claim 1, characterized in that, The receiving hole (21) includes a mating part (211), the radial distance of which is configured to gradually decrease as it moves away from the ejector pin, so as to form a surface contact with the ejector pin.

3. The device for supporting shaft-like parts on a machine tool according to claim 2, characterized in that, The receiving hole (21) also includes a receiving portion (212) communicating with the mating portion (211), the receiving portion (212) being configured to extend axially to form a cavity for receiving the end of the ejector pin.

4. The device for supporting shaft-like parts on a machine tool according to claim 1, characterized in that, The elastic mechanism (1) includes a limiting ring (11) and a plurality of fitting portions (12) with curvatures corresponding to the radial inner side of the outer wall (101) arranged along the contour of the radial inner side of the limiting ring (11), such that each fitting portion (12) expands circumferentially when subjected to a force from the fixing mechanism (2) and abuts against the outer wall (101).

5. The device for supporting shaft-like parts on a machine tool according to claim 4, characterized in that, The radial distance of the outer side of the limiting ring (11) is configured to be greater than the radial distance of the outer edge of the outer wall (101) so that the limiting ring (11) allows the movement of the fitting part (12) continuously away from the ejector pin within the channel (102).

6. The device for supporting shaft-like parts on a machine tool according to claim 5, characterized in that, A slot (111) is also provided on the limiting ring (11), which extends along its axial direction to the fitting part (12) so that when the elastic mechanism (1) is subjected to the force from the fixing mechanism (2), the fitting part (12) and the limiting ring (11) can both expand along the circumferential direction to distribute the load and balance the stress.

7. The device for supporting shaft-like parts on a machine tool according to claim 6, characterized in that, The thickness of several of the bonding portions (12) away from the ejector pin is configured to be greater than the thickness near the ejector pin, so that the radial distance formed by the several bonding portions (12) gradually decreases in the direction away from the ejector pin.

8. The device for supporting shaft-like parts on a machine tool according to claim 7, characterized in that, The fixing mechanism (2) includes a fixing plate (22), the receiving hole (21) is formed by the fixing plate (22), and the radial distance of the fixing plate (22) continuously decreases in the direction away from the ejector pin, so that when the fixing plate (22) is located in the elastic mechanism (1), the fixing plate (22) can abut against the elastic mechanism (1) in a surface contact manner, and allow the elastic mechanism (1) to restrict the continuous movement of the fixing mechanism (2) in the direction away from the ejector pin.

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