Machining tool

Abstract

The utility model discloses a machining tool, which is used for machining a powder ceramic ball head and comprises a tool handle and a pcd (printed circuit board) sheet. Wherein the pcd piece is installed at one end of the cutter handle in the length direction, the central axis of the pcd piece and the central axis of the cutter handle are arranged in an included angle of 45 degrees, the pcd piece comprises a semicircular part and a rectangular part which are integrally connected, the radius size of the semicircular part is r, the value range of r is 1.24-1.26 mm, the length value of the rectangular part is L, the value range of L is 6.3-8.3 mm, and the value range of L is 1.24-1.26 mm. The semicircular part is used for machining an inner cavity of the powder ceramic ball head, and the rectangular part and the partial semicircular part are used for machining the outer end face of the powder ceramic ball head. Compared with an existing machining tool for multiple times of cutting through an outer circle turning tool, the machining tool has the advantages that the cutting frequency is smaller, the phenomena of tool pricking and opening collapsing are not prone to occurring, the semicircular part of the pcd piece is used for cutting the inner cavity of the powder ceramic ball head, the tool does not need to be switched, and the machining efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical manufacturing, in particular to a processing tool. Background Art

[0002] The pink ceramic ball head can replace the damaged femoral head in the human body. The material of the pink ceramic ball head is mostly alumina ceramic or zirconia ceramic, which is a brittle material. At present, when processing the pink ceramic ball head, a hole is first drilled with a drill bit, and then the outer end face of the pink ceramic ball head is cut with an external cylindrical turning tool, and the inner cavity of the pink ceramic ball head is cut with a small boring tool; due to the material characteristics of the pink ceramic ball head, the processing tool is prone to problems such as tool piercing, chipping, and cracking when processing the pink ceramic ball head, and the more the number of cutting times, the more likely it is to pierce and chip; in addition, the processing method of first processing the outer end face with an external cylindrical turning tool and then processing the inner cavity with a small boring tool is time-consuming and inefficient. Utility Model Content

[0003] The utility model aims to provide a processing tool to solve the problems that the existing processing tools are prone to tool piercing, chipping, cracking, etc. when processing powder ceramic ball heads, and the problems that the tool piercing and chipping are more likely to occur with the increase of the number of cutting times, and the processing method of first processing the outer end surface by an external cylindrical turning tool and then processing the inner cavity by a small boring tool is time-consuming and inefficient.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A processing tool, used for processing a powdered ceramic ball head, comprising:

[0006] Handle;

[0007] A pcd sheet, wherein the pcd sheet is installed at one end of the knife handle in the length direction, the central axis of the pcd sheet is set at an angle with the central axis of the knife handle, and the value of the angle is 45°, the pcd sheet includes a semicircular portion and a rectangular portion connected in one piece, the radius of the semicircular portion is r, the value range of r is: 1.24mm to 1.26mm, the length of the rectangular portion is L, the value range of L is: 6.3mm to 8.3mm, the semicircular portion is used to process the inner cavity of the powder pottery ball head, and the rectangular portion and part of the semicircular portion are used to process the outer end surface of the powder pottery ball head.

[0008] As a preferred technical solution of the above-mentioned machining tool, the angle range of the back angle of the cutting edge of the rectangular portion is: 13° to 15°.

[0009] As a preferred technical solution for the above-mentioned machining tool, the tool handle includes a connected blade mounting portion, a connecting transition portion and a fixing portion, the blade mounting portion is used to mount the pcd sheet, the fixing portion is used to connect to the fixture, and the diameter of the blade mounting portion is smaller than the diameter of the fixing portion.

[0010] As a preferred technical solution of the above-mentioned processing tool, the central axis of the blade mounting portion is arranged at an angle to the central axis of the fixing portion and the central axis of the pcd sheet.

[0011] As a preferred technical solution of the above-mentioned machining tool, the fixing portion is provided with a clamping end surface, and the fixture can be clamped on the clamping end surface.

[0012] As a preferred technical solution of the above-mentioned machining tool, the diameter of the fixing portion is D, and the value range of D is: 10 mm to 16 mm.

[0013] As a preferred technical solution for the above-mentioned processing tool, the thickness range of the pcd sheet is: 1.5mm to 2.5mm.

[0014] As a preferred technical solution of the above-mentioned machining tool, the length range of the tool handle is: 100mm to 120mm.

[0015] As a preferred technical solution of the above-mentioned machining tool, the length range of the blade mounting portion is: 17.3 mm to 19.3 mm.

[0016] As a preferred technical solution of the above-mentioned machining tool, the material of the tool handle is metal alloy.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a processing tool for processing a powder ceramic ball head, and the processing tool comprises a tool handle and a PCD sheet. The PCD sheet is installed at one end of the tool handle in the length direction, and the central axis of the PCD sheet is set at an angle with the central axis of the tool handle, and the value of the angle is 45°. The PCD sheet comprises a semicircular part and a rectangular part connected in one piece, the radius size of the semicircular part is r, and the value range of r is: 1.24mm to 1.26mm, the length value of the rectangular part is L, and the value range of L is: 6.3mm to 8.3mm, the semicircular part is used to process the inner cavity of the powder ceramic ball head, and the rectangular part and the part of the semicircular part are used to process the outer end face of the powder ceramic ball head. After drilling a hole with a drill bit, the processing tool is used to process the outer end face and the inner cavity of the powder ceramic ball head. First, the rectangular part and the part of the semicircular part of the PCD sheet are used to cut the outer end face of the powder ceramic ball head, and the outer end face of the powder ceramic ball head can be cut once. Compared with the existing multiple cutting by an external cylindrical turning tool, the number of cutting times is less, and it is not easy to cause the phenomenon of tool piercing and cracking. After the outer end surface of the powder ceramic ball head is cut, the PCD sheet of the machining tool is inserted into the inner cavity, and the semicircular part of the PCD sheet is used to cut the inner cavity of the powder ceramic ball head, so that the inner cavity of the powder ceramic ball head can be cut without switching the tool, which can effectively improve the processing efficiency. In addition, the advantages of using PCD sheets to cut the powder ceramic ball head are: PCD sheets have high hardness, high compressive strength, good thermal conductivity and wear resistance, can achieve high processing accuracy and processing efficiency in high-speed cutting, and are conducive to processing dimensional stability and high finish. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a machining tool provided by an embodiment of the utility model;

[0020] Figure 2 The utility model is provided in an embodiment of a processing tool and a processing schematic diagram of a powder ceramic ball head.

[0021] In the figure:

[0022] 100, powder ceramic ball head; 101, outer end surface; 102, inner cavity;

[0023] 1. Knife handle; 11. Blade mounting portion; 12. Connection transition portion; 13. Fixing portion; 131. Clamping end surface;

[0024] 2. PCD sheet; 21. Semicircular portion; 22. Rectangular portion. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] like Figure 1 and Figure 2As shown in , an embodiment of the utility model provides a processing tool for processing a powder ceramic ball head 100. The processing tool includes a tool handle 1 and a PCD sheet 2 (polycrystalline diamond compact).

[0031] Specifically, if Figure 1 and Figure 2 As shown in the figure, the pcd sheet 2 is installed at one end of the handle 1 in the length direction, the central axis of the pcd sheet 2 is set at an angle with the central axis of the handle 1, and the angle is 45°. The pcd sheet 2 includes a semicircular portion 21 and a rectangular portion 22 that are integrally connected. The radius of the semicircular portion 21 is r, and the value range of r is: 1.24mm to 1.26mm. The length of the rectangular portion 22 is L, and the value range of L is: 6.3mm to 8.3mm. The semicircular portion 21 is used to process the inner cavity 102 of the powder ceramic ball head 100, and the rectangular portion 22 and part of the semicircular portion 21 are used to process the outer end surface 101 of the powder ceramic ball head 100.

[0032] In detail, Figure 1 and Figure 2 As shown in , after drilling with a drill bit, the outer end face 101 and the inner cavity 102 of the powder ceramic ball head 100 are processed by the processing tool. First, the outer end face 101 of the powder ceramic ball head 100 is cut by the rectangular portion 22 and part of the semicircular portion 21 of the pcd sheet 2. The outer end face 101 of the powder ceramic ball head 100 can be cut once. Compared with the existing multiple cutting by the external cylindrical turning tool, the number of cutting times is less, and it is not easy to have the phenomenon of tool piercing and chipping. After the outer end face 101 of the powder ceramic ball head 100 is cut, the pcd sheet 2 of the processing tool is inserted into the inner cavity 102, and the semicircular portion 21 of the pcd sheet 2 is used to cut the inner cavity 102 of the powder ceramic ball head 100, so that the inner cavity 102 of the powder ceramic ball head 100 can be cut without switching the tool, which can effectively improve the processing efficiency. In addition, the advantage of using PCD sheet 2 to cut the powder ceramic ball head 100 in this embodiment is that the PCD sheet 2 has high hardness, high compressive strength, good thermal conductivity and wear resistance, can achieve high processing accuracy and processing efficiency in high-speed cutting, and is conducive to processing dimensional stability and high smoothness.

[0033] In detail, in this embodiment, the PCD sheet 2 is embedded at one end of the handle 1, and the thickness of the PCD sheet 2 ranges from 1.5 mm to 2.5 mm. Further preferably, the thickness of the PCD sheet 2 is 2 mm. Such a configuration can ensure the cutting area and cutting strength of the PCD sheet 2, so as to better cut and process the powder ceramic ball head 100.

[0034] Preferably, the radius r of the semicircular portion 21 of the pcd sheet 2 is 1.25 mm.

[0035] Preferably, the length L of the rectangular portion 22 of the pcd sheet 2 is 7.3 mm.

[0036] Specifically, the angle range of the back angle of the cutting edge of the rectangular portion 22 is 13° to 15°. This arrangement can ensure the sharpness of the cutting edge, so that the cutting resistance is small when cutting the outer end surface 101 of the powder ceramic ball head 100.

[0037] Specifically, if Figure 1 and Figure 2 As shown in , the handle 1 includes a blade mounting portion 11, a connecting transition portion 12 and a fixing portion 13, wherein the blade mounting portion 11 is used to mount the pcd sheet 2, and the fixing portion 13 is used to connect with the fixture, and the diameter of the blade mounting portion 11 is smaller than the diameter of the fixing portion 13. In detail, the diameter of the blade mounting portion 11 is set to be smaller than the diameter of the fixing portion 13, which can facilitate the discharge of the chips cut from the inner cavity 102, and avoid the problem that the blade mounting portion 11 contacts the peripheral wall of the inner cavity 102 and affects the processing accuracy of the inner cavity 102. In addition, the connecting transition portion 12 is provided so that the blade mounting portion 11 and the fixing portion 13 can transition smoothly, which can avoid the situation where the guide handle 1 is broken due to stress concentration.

[0038] Preferably, if Figure 1 As shown in , the diameter of the fixing portion 13 is D, and the value range of D is: 10mm to 16mm. Optionally, the value of D is 10mm, 12mm, 14mm or 16mm. Specifically, the length range of the blade mounting portion 11 is: 17.3mm to 19.3mm. Optionally, the length of the blade mounting portion 11 is 17.3mm, 18.3mm or 19.3mm. Preferably, the value of the blade mounting portion 11 is 18.3mm.

[0039] Preferably, if Figure 1 As shown in the figure, the central axis of the blade mounting portion 11 is arranged at an angle to the central axis of the fixing portion 13 and the central axis of the pcd sheet 2. This arrangement can avoid the interference between the blade mounting portion 11 and the inner cavity 102 of the powder ceramic ball head 100 during processing; in addition, it can also facilitate the discharge of the cut debris outside the inner cavity 102.

[0040] Alternatively, if Figure 1 As shown in , the fixing portion 13 is provided with a clamping end surface 131, and the clamp can be clamped on the clamping end surface 131. By providing the clamping end surface 131, the clamp can clamp the fixing portion 13 of the handle 1 more stably to prevent slipping.

[0041] Specifically, in this embodiment, the length of the handle 1 ranges from 100 mm to 120 mm. Specifically, the length of the handle 1 can be 100 mm, 110 mm or 120 mm, and the corresponding length of the handle 1 can be selected according to actual needs. Specifically, the handle 1 is made of metal alloy.

[0042] Specifically, the advantages of using the machining tool to process the powder ceramic ball head 100 are:

[0043] The machining tool can complete the machining of the outer end surface 101 and the inner cavity 102 of the powder ceramic ball head 100 at one time. Figure 1 and Figure 2 As shown in , the central axis of the pcd sheet 2 and the central axis of the shank 1 are set to form an angle of 45°, and the radius of the semicircular portion 21 of the pcd sheet 2 is set to 1.25mm, which can cut off the 3mm margin of the outer end face 101 of the powder ceramic ball head 100 at one time, and the size of the inner cavity 102 of the powder ceramic ball head 100 is processed to 2.9° and the concave radius size of the inner cavity 102 of the powder ceramic ball head 100 is processed to 1.75mm. In addition, the use of the embedded pcd sheet 2 to process and cut the powder ceramic ball head 100 has the characteristics of high hardness, high compressive strength, good thermal conductivity and wear resistance, and can obtain high processing accuracy and processing efficiency in high-speed cutting, which is conducive to stable processing size and high finish. Setting the back angle of the cutting edge to 13° to 15° can make the cutting edge sharper, reduce the risk of knife piercing and knife collapse, and improve processing efficiency and qualified rate.

[0044] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A processing tool for processing a powder ceramic ball head (100), characterized in that: include: Handle (1); A pcd sheet (2), the pcd sheet (2) being mounted on one end of the knife handle (1) in the length direction, the central axis of the pcd sheet (2) being arranged at an angle with the central axis of the knife handle (1), and the angle being 45°, the pcd sheet (2) comprising a semicircular portion (21) and a rectangular portion (22) connected in one piece, the radius of the semicircular portion (21) being r, the value range of r being 1.24 mm to 1.26 mm, the length of the rectangular portion (22) being L, the value range of L being 6.3 mm to 8.3 mm, the semicircular portion (21) being used for processing an inner cavity (102) of the powdered ceramic ball head (100), and the rectangular portion (22) and part of the semicircular portion (21) being used for processing an outer end surface (101) of the powdered ceramic ball head (100).

2. A machining tool according to claim 1, characterized in that: The angle range of the back angle of the cutting edge of the rectangular portion (22) is 13° to 15°.

3. A machining tool according to claim 1, characterized in that: The knife handle (1) comprises a blade mounting portion (11), a connecting transition portion (12) and a fixing portion (13) which are connected to each other; the blade mounting portion (11) is used to mount the PCD sheet (2); the fixing portion (13) is used to connect to a fixture; and the diameter of the blade mounting portion (11) is smaller than the diameter of the fixing portion (13).

4. A machining tool according to claim 3, characterized in that: The central axis of the blade mounting portion (11) is arranged at an angle to the central axis of the fixing portion (13) and the central axis of the PCD sheet (2).

5. A machining tool according to claim 3, characterized in that: The fixing portion (13) is provided with a clamping end surface (131), and the clamp can be clamped on the clamping end surface (131).

6. A machining tool according to any one of claims 3 to 5, characterized in that: The diameter of the fixing portion (13) is D, and the value range of D is 10 mm to 16 mm.

7. A machining tool according to any one of claims 1 to 5, characterized in that: The thickness of the pcd sheet (2) ranges from 1.5 mm to 2.5 mm.

8. A machining tool according to any one of claims 3 to 5, characterized in that: The length of the knife handle (1) ranges from 100 mm to 120 mm.

9. A machining tool according to claim 8, characterized in that: The length of the blade mounting portion (11) ranges from 17.3 mm to 19.3 mm.

10. A machining tool according to any one of claims 1 to 5, characterized in that: The material of the knife handle (1) is a metal alloy.

Images