A rounding device

Abstract

The present invention relates to a rounding device, which comprises a loading component and a grinding component; the loading component includes a first power mechanism and a limiting mechanism; the first power mechanism is used for connecting with a wire and driving the wire to rotate self - sufficiently; the limiting mechanism is provided with an inner hole through which the wire passes, and is used for limiting the circular run - out tolerance of the end of the wire when the wire rotates self - sufficiently; the grinding component includes a second power mechanism and a grinding wheel set, the second power mechanism is connected with the grinding wheel set and is used for driving the grinding wheel set to rotate self - sufficiently; when the first power mechanism is connected with the wire, the end of the wire passes through the inner hole and forms a point contact with the outer peripheral surface of the grinding wheel set, the first power mechanism drives the wire to rotate self - sufficiently, and at the same time the second power mechanism drives the grinding wheel set to rotate self - sufficiently to grind the end of the wire. This rounding device can grind extremely fine and soft wires and ensure the precision of the grinding process.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and particularly relates to a rounding device. Background Art

[0002] In the field of interventional medicine, guide wires have a wide range of uses, such as for constructing a delivery path to deliver interventional medical devices to a target position in the body. The diameter of a guide wire is generally between 0.08 mm and 0.2 mm. Such a thin guide wire is extremely flexible and difficult to machine. In the prior art, most of the ends of guide wires are not processed, resulting in a sharp transition between the end face and the side face, or slightly ground manually to reduce the sharpness at the transition between the end face and the side face, but there are still burrs and the end is not smooth enough. This causes the guide wire to easily damage tissues when entering the body along the body lumen. Summary of the Invention

[0003] The purpose of the present invention is to provide a rounding device for grinding the end of an extremely thin metal wire so that the end of the metal wire forms a predetermined shape.

[0004] To achieve the above purpose, a rounding device provided by the present invention includes a loading component and a grinding component. Among them,

[0005] The loading component includes a first power mechanism and a limiting mechanism; the first power mechanism is used to connect with the wire and drive the wire to rotate; the limiting mechanism is provided with an inner hole through which the wire passes, and is used to limit the circular runout tolerance of the end of the wire when the wire rotates.

[0006] The grinding component includes a second power mechanism and a grinding wheel set. The second power mechanism is connected to the grinding wheel set and is used to drive the grinding wheel set to rotate.

[0007] When the first power mechanism is connected to the wire, and the end of the wire passes through the inner hole and forms a point contact with the outer peripheral surface of the grinding wheel set, the rounding device is configured such that the first power mechanism drives the wire to rotate, and at the same time the second power mechanism drives the grinding wheel set to rotate to grind the end of the wire.

[0008] Optionally, the grinding wheel set includes a first grinding wheel, and the first grinding wheel is a polymer grinding wheel; and / or the grinding wheel set includes a second grinding wheel, and the second grinding wheel is a corundum grinding wheel.

[0009] Optionally, the grinding wheel set includes a first grinding wheel and a second grinding wheel, and the hardness of the second grinding wheel is greater than that of the first grinding wheel.

[0010] The rounding is configured to first grind the end of the wire using the second grinding wheel so that the end of the wire is formed into a conical structure, and then grind the end using the first grinding wheel so that the end forms a smooth curved surface.

[0011] Optionally, the limiting mechanism is arranged between the first power mechanism and the grinding wheel set; the inner hole of the limiting mechanism includes a guiding section and a limiting section; the guiding section is a conical section with a cross-section gradually decreasing in the direction close to the grinding wheel set; the inner diameter of the limiting section matches the outer diameter of the wire.

[0012] Optionally, the rounding device further includes a bracket, and the bracket is arranged between the limiting mechanism and the grinding wheel set for supporting the end of the wire after the grinding process is stopped.

[0013] Optionally, the rounding device further includes an observation mechanism for observing whether the end forms a predetermined shape.

[0014] Optionally, the bracket is provided with a supporting groove with an upward opening, and the bracket is configured to have magnetism to generate an attractive force on the wire and attract the end into the supporting groove when the grinding process is stopped.

[0015] Optionally, the observation mechanism is a microscope; or, the observation mechanism includes an image acquisition element and a display, the image acquisition element is used for acquiring image information of the end, and the display is communicatively connected with the image acquisition element for receiving and displaying the image information.

[0016] Optionally, the rounding device further includes a base, and the base is provided with a first sliding guiding part and a second sliding guiding part perpendicular to each other;

[0017] The loading assembly is arranged on the first sliding guiding part, and the first power mechanism and the limiting mechanism can move along the first sliding guiding part; the grinding assembly is movably arranged on the second sliding guiding part.

[0018] Optionally, the rounding device further includes a first locking part and a second locking part; the first locking part is used for locking the first power mechanism and the limiting mechanism to prevent the first power mechanism and the limiting mechanism from moving along the first sliding guiding part; the second locking part is used for locking the grinding assembly to prevent the grinding assembly from moving on the second sliding guiding part.

[0019] Compared with the prior art, the rounding device of the present invention has the following advantages:

[0020] The aforementioned rounding device includes a loading component and a grinding component. Among them, the loading component includes a first power mechanism and a limiting mechanism. The first power mechanism is used to connect with the wire and drive the wire to rotate self - sufficiently; the limiting mechanism is provided with an inner hole through which the wire passes, so as to limit the circular run - out tolerance of the end of the wire when the wire rotates self - sufficiently; the model component includes a second power mechanism and a grinding wheel set. The second power mechanism is connected with the grinding wheel set to drive the grinding wheel set to rotate self - sufficiently. When the first power mechanism is connected with the wire, and the end of the wire passes through the inner hole and forms a point contact with the outer peripheral surface of the grinding wheel set, the rounding device is configured such that the first power mechanism drives the wire to rotate self - sufficiently, and at the same time the second power mechanism drives the grinding wheel set to rotate self - sufficiently, so as to perform grinding treatment on the end and make the end form a predetermined shape. In particular, when the diameter of the wire is extremely small, such as 0.08 mm - 0.20 mm, the limiting mechanism is used to limit the circular run - out tolerance of the wire while ensuring that the wire does not deform or bend. Thus, the grinding wheel set can be used to perform grinding treatment on the end of the wire, so that the end of the wire forms a rounded structure with a smooth surface, avoiding unnecessary damage to external organizational structures during use. Brief Description of the Drawings

[0021] The drawings are used to better understand the present invention and do not constitute an improper limitation to the present invention. Among them:

[0022] Figure 1 is a schematic structural diagram of the rounding device provided by the present invention according to an embodiment;

[0023] Figure 2 is a detailed structural diagram of the rounding device provided by the present invention according to an embodiment;

[0024] Figure 3 is Figure 2 a top view of the rounding device shown;

[0025] Figure 4 is a cross - sectional view of the limit sleeve of the limiting mechanism of the rounding device provided by the present invention according to an embodiment;

[0026] Figure 5 is a schematic diagram of the end of the wire before and after the rounding device provided by the present invention performs grinding treatment on the wire; in the figure, (a) shows the original state of the wire; (b) shows that the end of the wire forms a conical structure after grinding treatment; (c) shows that the end of the wire forms a smooth surface after grinding treatment.

[0027] [Explanation of the reference numerals is as follows]:

[0028] 10 - wire;

[0029] 100 - Loading assembly;

[0030] 110 - First power mechanism, 120 - Limiting mechanism;

[0031] 200 - Grinding assembly;

[0032] 210 - Second power mechanism;

[0033] 220 - Grinding wheel set;

[0034] 221 - First grinding wheel, 222 - Second grinding wheel;

[0035] 230 - Fourth fixing seat;

[0036] 310 - Bracket;

[0037] 311 - Support groove. Detailed implementation mode

[0038] The following illustrates the implementation mode of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention schematically. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0039] In addition, each embodiment of the following description content has one or more technical features. However, this does not mean that those who use the present invention must implement all the technical features in any one embodiment at the same time, or can only separately implement some or all of the technical features in different embodiments. In other words, on the premise that implementation is possible, those skilled in the art can, according to the disclosure content of the present invention and depending on design specifications or implementation requirements, selectively implement some or all of the technical features in any one embodiment, or selectively implement the combination of some or all of the technical features in multiple embodiments, thereby increasing the flexibility when implementing the present invention.

[0040] As used in this specification, the singular forms "a", "an", and "the" include plural referents, and the plural form "plural" includes more than two referents, unless the context clearly dictates otherwise. As used in this specification, the term "or" is generally used in the sense of including "and / or", unless the context clearly dictates otherwise, and the terms "mounted", "connected", and "coupled" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the objectives of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0042] Figure 1 A schematic structural diagram of the chamfering device provided by the embodiment of the present invention is shown; Figure 2 A detailed structural diagram of the chamfering device is shown; Figure 3 A top view of the chamfering device is shown. The chamfering device is used for grinding the end of the wire 10. The diameter of the wire 10 is extremely small. For example, when the wire 10 is a medical guide wire, its diameter is between 0.08 mm and 0.20 mm. The wire 10 with such a small diameter has a high softness, and it is very easy to bend and deform when grinding it in the circumferential direction by mechanical loading, resulting in a large circular runout tolerance when the wire 10 rotates, and reducing the processing accuracy.

[0043] In view of this, the present invention provides an example as Figures 1 to 3 The chamfering device shown. The chamfering device includes a loading assembly 100 and a grinding assembly 200. Among them, the loading assembly 100 includes a first power mechanism 110 and a limiting mechanism 120. The first power mechanism 110 is used to connect with the wire 10 and drive the wire 10 to rotate. The limiting mechanism 120 is provided with an inner hole through which the wire 10 passes, so as to limit the circular runout tolerance of the end of the wire 10 when the wire 10 rotates. The grinding assembly 200 includes a second power mechanism 210 and a grinding wheel set 220. The second power mechanism 210 is connected with the grinding wheel set 220 and drives the grinding wheel set 220 to rotate.

[0044] When the first power mechanism 110 is connected to the wire 10, and the end of the wire 10 passes through the inner hole and forms a point contact with the outer peripheral surface of the grinding wheel set 220, the rounding device is configured such that the first power mechanism 110 drives the wire 10 to rotate, and at the same time the second power mechanism 210 drives the grinding wheel set 220 to rotate, so as to grind the end of the wire 10 and form a predetermined shape at the end. By providing an inner hole in the limiting mechanism 120, after the end of the wire 10 passes through the inner hole, the hole wall of the inner hole can limit the circular runout tolerance of the end during rotation and prevent the wire 10 from deforming at the end, improving the positioning accuracy of the wire 10 and thus improving the accuracy of the grinding process.

[0045] Please continue to refer to Figures 1 to 3 , in a disclosed embodiment, the wire 10 has opposite first and second ends, wherein the first end is used to be connected to the first driving mechanism 110, and the second end will be subjected to grinding treatment. Specifically, the first power mechanism 110 includes a motor, and the rounding device further includes a clamping mechanism 300 which is arranged on the output shaft of the first power mechanism 110 and rotates synchronously therewith. The clamping mechanism 300 is used to clamp the first end of the wire 10. As discussed above, the wire 10 has extremely high softness, and it is difficult to ensure that it is coaxial with the output shaft of the first power mechanism 110 during the grinding process. Therefore, during the grinding process, only the torsional controllability of the wire 10 itself can be used to transfer the torque from the first end to the second end, and the limiting mechanism 120 is used to limit the circular runout tolerance of the second end to ensure the processing accuracy. In some implementation manners, the clamping mechanism 300 can be entirely a metal structural member such as a spring buckle, but this may cause scratches and other damages on the surface of the first end of the wire 10. In other embodiments, the portion of the clamping mechanism 300 that contacts the first end of the wire 10 can be made of polytetrafluoroethylene to avoid damaging the surface of the wire 10.

[0046] In addition, the second power mechanism 210 can also include a motor, the grinding wheel set 220 is directly mounted on the output shaft of the second power mechanism 210, and the output shaft of the second power mechanism is arranged perpendicular to the output shaft of the first power mechanism 210.

[0047] Thus, the limiting mechanism 120 is arranged between the output shaft of the second power mechanism 210 and the grinding wheel set 220. Preferably, the inner hole of the limiting mechanism 120 includes two parts. Please refer to Figure 3, the inner hole includes an introduction section 121 and a limiting section 122. The introduction section 121 is designed as a tapered section with a cross-section gradually shrinking in the direction close to the grinding wheel set 220, which is convenient for threading the wire 10. The inner diameter of the limiting section 122 is uniform and matches the outer diameter of the wire 10.

[0048] When the wire 10 is a medical guide wire, preferably, the second end is formed into a smooth curved surface after grinding treatment (i.e., the medical guide wire has a smooth and rounded end), so that this end can be used as the distal end of the medical guide wire, so that when the medical guide wire enters the body along the human body lumen, it will not scratch human tissues and improve the use safety. It can be understood that the medical guide wire has opposite proximal and distal ends, where the distal end refers to the end that first enters the human body during the use of the medical guide wire.

[0049] The grinding wheel set 220 in this embodiment includes a first grinding wheel 221, and the first grinding wheel 221 is a polymer grinding wheel. Further, the grinding wheel set 220 further includes a second grinding wheel 222, and the hardness of the second grinding wheel 222 is greater than that of the first grinding wheel 221. During actual use, first use the second grinding wheel 221 to grind the end of the wire 10 to form a tapered structure, and then use the first grinding wheel 222 to grind the end to form a smooth curved surface. In a specific implementation manner, the second grinding wheel 222 can be a corundum grinding wheel, and the corundum grinding wheel has extremely high grinding efficiency, and the polymer grinding wheel has good deburring and polishing capabilities. The combination of the two can not only meet the grinding requirements but also improve the grinding efficiency.

[0050] Further, please refer to with emphasis Figure 2 and Figure 3, the rounding device further includes a base 400, on which a first sliding guide portion 410 and a second sliding guide portion 420 perpendicular to each other are provided. The loading assembly 100 is disposed on the first sliding guide portion 410, and both the first power mechanism 110 and the limiting mechanism 120 can move along the first sliding guide portion. Specifically, the loading assembly 100 further includes a first fixed seat 101 and a second fixed seat 102, both of which are movably disposed on the first sliding guide portion 410. The first power mechanism 110 is installed on the first fixed seat 101, and the limiting mechanism 120 is a limiting sleeve, which is installed on the second fixed seat 102. Similarly, the grinding assembly 200 is movably disposed on the second sliding guide portion 420. Specifically, the grinding assembly 200 further includes a third fixed seat 201, which is slidably disposed on the second sliding guide portion 420, and at the same time, the housing of the second power mechanism 210 is disposed on the third fixed seat 201. The purpose of such a setting is to facilitate adjusting the positions of the first power mechanism 110 and the limiting mechanism 120 according to the length of the wire 10, and adjusting the positions of the second grinding wheel 221 and the first grinding wheel 222 relative to the end of the wire 10 during the grinding process. The first sliding guide portion 410 and the second sliding guide portion 420 can be guide rails or chutes.

[0051] Of course, based on such a structure, the rounding device further includes a first locking portion (not shown in the figure) and a second locking portion (not shown in the figure). Among them, the first locking portion includes a first sub-locking portion and a second sub-locking portion. The first sub-locking portion is used to lock the first fixed seat 101 to prevent the first fixed seat 101 from moving along the first sliding guide portion 410, and the second sub-locking portion is used to lock the second fixed seat 102 to prevent the second fixed seat 102 from moving along the first sliding guide portion 410. The second locking portion includes a third sub-locking portion, which is used to lock the third fixed seat 201 to prevent the grinding assembly 200 from moving along the second sliding guide portion 420.

[0052] Next, this article will combine Figure 1 and Figure 5 to introduce the specific process of grinding the medical guide wire (i.e., the wire 10) using the rounding device.

[0053] First, provide the rounding device and the wire 10. As shown in (a) of Figure 5 , at this time, the second end of the wire 10 is the end face to be processed, and its end face is a plane and has a sharp transition with the side surface of the wire.

[0054] Next, adjust the position of the grinding assembly 200 so that the second grinding wheel 222 is disposed opposite to the first sliding guide portion 410.

[0055] Next, adjust the relative positions of the first power mechanism 110 and the limiting mechanism 120 with respect to the second grinding wheel 222 according to the length of the wire 10. Generally, along the extending direction of the first sliding guide portion 410, the distance from the limiting mechanism 120 to the second grinding wheel 222 is about 50 mm.

[0056] Next, load the first end of the wire 10 onto the clamping mechanism 300, and let the second end pass through the inner hole of the limiting mechanism 120, while a point contact is formed between the second end and the second grinding wheel 222. Here, attention should be paid to controlling the angle of the eccentric angle formed by the second end and the axis of the second grinding wheel 222. When the angle of the eccentric angle is too large, the second end of the wire 10 is extremely easy to be over-ground and formed into a tip. Those skilled in the art can control the size of the eccentric angle according to actual needs.

[0057] Next, the first power mechanism 110 and the second power mechanism 210 work to grind the second end of the wire 10 and form the second end into a conical structure, as Figure 5 (b) shown.

[0058] Next, adjust the position of the grinding assembly 200 so that the first grinding wheel 221 forms a point contact with the second end of the wire 10.

[0059] Finally, the first power mechanism 110 and the second power mechanism 210 work to grind the second end of the wire 10 so that a smooth curved surface is formed at the end of the second end, as Figure 5 (c) shown.

[0060] It should be noted that when the grinding wheel set 220 grinds the second end of the wire 10, there is a frictional force between the grinding wheel set 220 and the wire 10, and this frictional force drives the second end of the wire 10 to move away from the grinding wheel set 220. To ensure the smooth progress of the grinding process, taking the orientation shown as an example, the grinding wheel set 220 needs to rotate clockwise, so that the wire 10 jumps upward under the action of the force applied by the grinding wheel set 220 to move away from the grinding wheel set 220, and then the wire 10 falls under the action of gravity and contacts the grinding wheel set 220 again. Repeatedly like this until the grinding process ends. Figure 1 As shown, the grinding wheel set 220 needs to rotate clockwise, so that the wire 10 jumps upward under the action of the force applied by the grinding wheel set 220 to move away from the grinding wheel set 220, and then the wire 10 falls under the action of gravity and contacts the grinding wheel set 220 again. Repeatedly like this until the grinding process ends.

[0061] In addition, in this embodiment, the grinding time of the first grinding wheel 221 and the second grinding wheel 222 on the second end of the wire 10 is determined according to actual needs. During the grinding process, the rotational speeds of the first grinding wheel 221 and the second grinding wheel 222 are also determined according to actual needs. Thus, the first power mechanism 110 and the second power mechanism 210 can be powered by one power supply, but their rotational speeds are adjusted by different speed regulators 600. Meanwhile, it is preferably that the on-off of the first power mechanism 110 and the second power mechanism 210 with respect to the power supply is controlled by an on-off timer 700 and a switch, so that the first power mechanism 110 and the second power mechanism can start and stop working simultaneously, ensuring the processing accuracy.

[0062] Further, the operator also hopes to observe the second end of the wire 10 to determine whether the second end forms the predetermined shape (such as a smooth curved surface). Therefore, the rounding device further includes a bracket 510 and an observation mechanism. The bracket 510 is arranged between the limiting mechanism 120 and the grinding wheel set 220 and is used to support the second end of the wire 10 when the grinding process stops. The observation mechanism is used to observe whether the end forms the predetermined shape. If the second end of the wire 10 does not form the predetermined shape, it can be reprocessed without disassembling and assembling the wire.

[0063] Optionally, the bracket 510 is provided with a support groove 511 opening upward, and the bracket 510 is configured to have magnetism to generate an attractive force on the wire 10 and attract the second end into the support groove 511 when the grinding process on the second end stops. In one implementation, the bracket 510 can be internally provided with a permanent magnet. At this time, the attractive force generated by the permanent magnet on the wire 10 should be less than the frictional force between the grinding wheel set 220 and the second end of the wire 10 to avoid adsorbing the second end during the grinding process. In some other implementations, the bracket 510 is internally provided with an electromagnet, and when observation is needed, the electromagnet is energized to generate a magnetic force to adsorb the second end.

[0064] Optionally, the observation mechanism can be a microscope for magnifying the second end of the wire 10 for convenient observation. Preferably, the magnification of the microscope is at least 200 times. Or, the observation mechanism includes an image acquisition element for acquiring the image information of the second end to determine whether the second end forms the predetermined shape according to the image information. Further, the observation mechanism further includes a display 521 communicatively connected to the image acquisition element for receiving and displaying the image information.

[0065] The rounding device provided by the present invention can effectively ensure the grinding accuracy when grinding the end of an extremely thin and flexible wire, so as to form an expected shape at the end of the wire, such as a smooth curved surface. In practice, by grinding the end of a medical guide wire with a diameter of 0.08 mm, a smooth surface (i.e., a rounded end) is obtained. When grinding the end of a medical guide wire with a diameter of 0.1 mm, the end of the medical guide wire can also be formed into a smooth curved surface. Moreover, after the end of the medical guide wire is ground by the rounding device and then subjected to electrolytic treatment, a mirror-level curved surface can be formed at the end of the medical guide wire.

[0066] Although the present invention is disclosed as above, it is not limited thereto. Those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A rounding device, characterized in that, The chamfering device includes a loading assembly, a grinding assembly and a bracket. Among them, the loading assembly includes a first power mechanism and a limiting mechanism; the first power mechanism is used to connect with the wire and drive the wire to rotate; the limiting mechanism is provided with an inner hole for the wire to pass through, and is used to limit the circular runout tolerance of the end of the wire when the wire rotates; the grinding assembly includes a second power mechanism and a grinding wheel set, and the second power mechanism is connected with the grinding wheel set and is used to drive the grinding wheel set to rotate; the bracket is arranged between the limiting mechanism and the grinding wheel set; when the first power mechanism is connected with the wire, and the end of the wire passes through the inner hole and forms a point contact with the outer peripheral surface of the grinding wheel set, the chamfering device is configured such that the first power mechanism drives the wire to rotate, and at the same time the second power mechanism drives the grinding wheel set to rotate to grind the end of the wire; the bracket is provided with a supporting groove with an upward opening, and the bracket is configured to have magnetism to generate an attractive force on the wire and attract the end to the supporting groove when the grinding process is stopped; the attractive force generated by the bracket on the wire during the grinding process is less than the frictional force between the end of the wire and the grinding wheel set.

2. The rounding device according to claim 1, characterized in that, The grinding wheel set includes a first grinding wheel, and the first grinding wheel is a polymer grinding wheel; and / or the grinding wheel set includes a second grinding wheel, and the second grinding wheel is a corundum grinding wheel.

3. The rounding device according to claim 1, characterized in that, The grinding wheel set includes a first grinding wheel and a second grinding wheel, and the hardness of the second grinding wheel is greater than that of the first grinding wheel; The chamfering is configured to first grind the end of the wire with the second grinding wheel to make the end of the wire form a conical structure, and then grind the end with the first grinding wheel to make the end form a smooth curved surface.

4. The rounding device according to claim 1, characterized in that, The limiting mechanism is arranged between the first power mechanism and the grinding wheel set; the inner hole of the limiting mechanism includes a guiding section and a limiting section; the guiding section is a conical section with a cross-section gradually decreasing in the direction close to the grinding wheel set; the inner diameter of the limiting section matches the outer diameter of the wire.

5. The rounding device according to claim 1, characterized in that, The chamfering device further includes an observation mechanism, and the observation mechanism is used to observe whether the end forms a predetermined shape.

6. The rounding device according to claim 5, characterized in that, The observation mechanism is a microscope; or, the observation mechanism includes an image acquisition element and a display, the image acquisition element is used to acquire the image information of the end, and the display is communicatively connected with the image acquisition element and is used to receive the image information and display it.

7. The rounding device according to any one of claims 1-6, characterized in that, The chamfering device further includes a base, and the base is provided with a first sliding guiding part and a second sliding guiding part perpendicular to each other; the loading assembly is arranged on the first sliding guiding part, and the first power mechanism and the limiting mechanism can move along the first sliding guiding part; the grinding assembly is movably arranged on the second sliding guiding part.

8. The rounding device according to claim 7, characterized in that, The rounding device further includes a first locking portion and a second locking portion; the first locking portion is used to lock the first power mechanism and the limiting mechanism to prevent the first power mechanism and the limiting mechanism from moving along the first sliding guiding portion; the second locking portion is used to lock the grinding assembly to prevent the grinding assembly from moving on the second sliding guiding portion.

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