Bone plate processing tooling

Abstract

This utility model provides a bone plate processing fixture, relating to the field of medical device processing. The fixture includes: a base plate with a first support platform and a second support platform; the first and second support platforms are respectively used to place the front and back of the workpiece; a positioning structure disposed on the base plate; a fixing structure and a clamping structure; the clamping structure includes at least one side clamping plate and a middle clamping plate, the side clamping plate being disposed on the base plate, and the base plate having a fixing groove for placing the side clamping plate; the middle clamping plate is clamped to the upper surface of the workpiece by the fixing structure, and the middle clamping plate includes a short clamping plate and a long clamping plate. This bone plate processing fixture has wide applicability. Through the positioning structure, the workpiece is precisely positioned and installed, and combined with the clamping and fixing structures, it can adapt to the processing of bone plate workpieces of various specifications, breaking through the limitations of traditional single-workpiece dedicated fixtures and significantly improving clamping accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device processing, and in particular to a tooling for processing bone plates. Background Technology

[0002] In the manufacturing process of orthopedic implants, carbon fiber plates, as a key fixation component, often need to be manufactured in various specifications according to clinical needs, mainly differing in length and number of holes. These parts are mostly made from pre-formed blanks, whose surface morphology is essentially fixed after pressing. During machining, secondary clamping or pressing of non-machined areas is not permitted to avoid damaging the already formed surface or causing fiber layer peeling. Therefore, when machining parts of different specifications, a tooling system that can ensure positioning accuracy while adapting to multiple dimensional variations needs to be designed.

[0003] Currently, the industry mostly uses contour positioning fixtures for clamping. Although this can ensure the machining accuracy of a single type of part, it has the problem of strong specialization and poor versatility of the fixtures. As a result, each part needs to be equipped with an independent fixture, which not only has high fixture manufacturing costs and large storage space requirements, but also increases production changeover time and management complexity. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem of poor versatility of existing bone plate processing fixtures, this utility model provides a bone plate processing fixture with wide applicability. The fixture accurately positions and installs the workpiece through the positioning structure, and combined with the clamping and fixing structures, it can be adapted to the processing of bone plate workpieces of various specifications, breaking through the limitations of traditional single-workpiece dedicated fixtures, and significantly improving the clamping accuracy and efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A tooling for machining bone plates, comprising: A base plate, wherein a first support platform and a second support platform are provided on the base plate; the first support platform and the second support platform are respectively used to place the reverse side and the front side of the workpiece; A positioning structure is provided on the base plate for positioning the workpiece; The device includes a fixing structure and a clamping structure. The clamping structure includes at least one side clamping plate and a middle clamping plate. The side clamping plate is disposed on the base plate, and the base plate is provided with a fixing groove for placing the side clamping plate. The middle clamping plate is clamped to the upper surface of the workpiece by the fixing structure, and the middle clamping plate includes a short clamping plate and a long clamping plate.

[0006] Optionally, the number of positioning structures is three, one of which is located on the long axis of the workpiece, and the other two are located on the head of the workpiece.

[0007] Optionally, the positioning structure includes a positioning groove and a positioning block. The positioning block includes an integrally formed positioning block body and a protrusion located on one side of the positioning block body. The positioning groove is provided on the base plate and can accommodate the positioning block body.

[0008] Optionally, the side pressure plate is L-shaped and includes an integrally formed horizontal plate and a vertical plate, with the horizontal plate placed in the fixing groove.

[0009] Optionally, the cross plate is provided with a clearance groove.

[0010] Optionally, the fixing structure includes an insert and a fixing hole. The insert is fixedly connected to the bottom of the base plate, and the bottom surface of the base plate is provided with a groove for placing the insert. The insert has an internal thread. The first support platform, the second support platform, the workpiece, the short pressure plate, and the long pressure plate are all provided with fixing holes. The screw is adapted to cooperate with the fixing hole and the internal thread to fix the workpiece.

[0011] Optionally, the insert is provided with a fixing post, and the internal thread is provided inside the fixing post.

[0012] Optionally, the first support platform and the second support platform are provided with an arc surface that is the same as the surface of the workpiece to be processed.

[0013] The beneficial effects of this utility model are: This utility model provides a simple and widely applicable tooling for processing bone plates. Through a positioning structure, the workpiece is precisely positioned and installed. Combined with a clamping and fixing structure, it achieves high-precision and high-efficiency clamping of workpieces with complex and irregular curved contours. It can also accommodate the processing of bone plate workpieces of various specifications, breaking through the limitations of traditional single-workpiece dedicated tooling and significantly improving clamping accuracy and efficiency. Furthermore, through the design of intermediate pressure plates of different specifications, this utility model allows one tooling set to adapt to the processing needs of bone plates with various lengths and hole layouts, significantly improving the tooling's versatility and effectively reducing production costs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 3 ; Figure 4This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 4 ; Figure 5 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 5 ; Figure 6 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 6 ; Figure 7 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 7 ; Figure 8 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 8 ; Figure 9 This is a schematic diagram of the structure of the bone plate processing fixture of this utility model. Figure 9 ; Figure 10 This is a cross-sectional view of the tooling for processing bone plates according to this utility model; In the diagram: 1-Base plate; 11-First support platform; 12-Second support platform; 13-Fixing groove; 14-Groove; 2-Positioning structure; 21-Positioning groove; 22-Positioning block; 221-Positioning block body; 222-Protrusion; 3-Fixing structure; 31-Insert; 311-Fixing column; 3111-Internal thread; 32-Fixing hole; 4-Pressure structure; 41-Side pressure plate; 411-Horizontal plate; 4111-Allowing groove; 412-Vertical plate; 42-Middle pressure plate; 421-Short pressure plate; 422-Long pressure plate; 5-Workpiece. Detailed Implementation

[0016] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] To address the problem of poor versatility in existing bone plate machining fixtures, such as... Figure 1-10As shown, this utility model provides a tooling for processing bone plates, including: a base plate 1, on which a first support platform 11 and a second support platform 12 are provided; the first support platform 11 and the second support platform 12 are respectively used to place the back and front of the workpiece 5; a positioning structure 2, which is provided on the base plate 1 and is used to position the workpiece 5; a fixing structure 3 and a pressing structure 4, the pressing structure 4 including at least one side pressing plate 41 and a middle pressing plate 42, the side pressing plate 41 being provided on the base plate 1, and the base plate 1 having a fixing groove 13 for placing the side pressing plate 41; the middle pressing plate 42 being pressed against the upper surface of the workpiece 5 by the fixing structure 3, and the middle pressing plate 42 including a short pressing plate 421 and a long pressing plate 422.

[0019] Compared to existing tooling designs that are only suitable for curved straight plates, this invention processes irregular curved bone plates with higher geometric complexity, making the processing more difficult. In terms of material selection, the base plate 1 and the side pressure plate 41 of this invention are both made of PEEK high-performance plastic: its mechanical strength far exceeds that of ordinary plastics, ensuring that it will not deform or fail after long-term repeated clamping; at the same time, as a non-metallic medium, it can avoid hard indentation damage to the carbon fiber bone plate caused by metal tooling.

[0020] This utility model's bone plate processing fixture has a simple structure and wide applicability. The positioning structure 2 precisely positions and installs the workpiece 5, and combined with the clamping structure 4 and fixing structure 3, it achieves high-precision and high-efficiency clamping of workpieces 5 with complex and irregular curved contours. Simultaneously, it can adapt to the processing of bone plate workpieces 5 of various specifications, breaking through the limitations of traditional fixtures dedicated to a single workpiece 5, and significantly improving clamping accuracy and efficiency. Furthermore, this utility model's design of intermediate pressure plates 42 of different specifications allows one fixture to adapt to the processing needs of bone plates with various lengths and hole layouts, significantly improving the fixture's versatility and effectively reducing production costs.

[0021] In order to achieve fast and accurate installation and positioning, the present invention preferably has three positioning structures 2, one of which is located on the long shaft of the workpiece 5 and the other two are located on the head of the workpiece 5.

[0022] Furthermore, the preferred positioning structure 2 of this utility model includes a positioning groove 21 and a positioning block 22. The positioning block 22 includes an integrally formed positioning block body 221 and a protrusion 222 located on one side of the positioning block body 221. The positioning groove 21 is provided on the base plate 1 and can be used to place the positioning block body 221.

[0023] The preferred side pressure plate 41 of this utility model is "L" shaped, including an integrally formed horizontal plate 411 and a vertical plate 412, with the horizontal plate 411 placed in the fixing groove 13.

[0024] Furthermore, in order to prevent the side pressure plate 41 from interfering with the machining tool, thereby allowing the tool to perform continuous and unobstructed cutting motion, the present invention preferably provides a relief groove 4111 on the horizontal plate 411.

[0025] The preferred fixing structure 3 of this utility model includes an insert 31 and a fixing hole 32. The insert 31 is fixedly connected to the bottom of the base plate 1, and the bottom surface of the base plate 1 is provided with a groove 14 for placing the insert 31. The insert 31 is provided with an internal thread 3111. The first support platform 11, the second support platform 12, the workpiece 5, the short pressure plate 421 and the long pressure plate 422 are all provided with fixing holes 32. The screw is suitable for cooperating with the fixing hole 32 and the internal thread 3111 to fix the workpiece 5.

[0026] Furthermore, the preferred insert 31 of this utility model is provided with a fixing post 311, and an internal thread 3111 is provided inside the fixing post 311. The insert 31 is made of stainless steel, which fundamentally avoids the wear and stripping problem caused by long-term use of PEEK and metal screws, and greatly improves the durability and clamping accuracy of the tooling.

[0027] The present invention preferably has an arc surface above the first support platform 11 and the second support platform 12 that is the same as the surface of the workpiece 5 to be processed.

[0028] When using this utility model, firstly, the workpiece 5 is placed on the first support platform 11 and precisely positioned using the positioning block 22; then, while machining the reverse side features of the workpiece 5, the process through hole is also machined; next, according to the specifications of the workpiece 5, a corresponding intermediate pressure plate 42 (short pressure plate 421 or long pressure plate 422) is selected, and screws are sequentially passed through the fixing holes 32 of the intermediate pressure plate 42 (short pressure plate 421 or long pressure plate 422), the workpiece 5, and the first support platform 11, and locked with the internal thread 3111 inside the fixing post 311, thus stably fixing the workpiece 5 to the base plate 1; then, the side pressure plate 41 and the positioning structure 2 are removed, and the contour features are machined to obtain the semi-finished workpiece 5 (short semi-finished workpiece 5 or long semi-finished workpiece 5). Next, the semi-finished workpiece 5 (short or long) is transferred to the second support platform 12 for machining of the front features of the workpiece 5. Screws are then passed through the fixing holes 32 of the intermediate pressure plate 42 (short or long pressure plate 422), the workpiece 5, and the second support platform 12 in sequence, and locked in place with the internal threads 3111 inside the fixing column 311 to ensure that the workpiece 5 is accurately positioned on the base plate 1. The program is then started to machine the head features and contour chamfer of the workpiece 5. Subsequently, the side pressure plates 41 are installed (two additional plates are required for long workpiece 5). After lateral clamping, the intermediate pressure plates 42 (short or long pressure plates 421) are removed. Finally, all the holes of the workpiece 5 are machined to complete the entire machining process.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tooling for processing bone plates, characterized in that, include: The base plate (1) is provided with a first support platform (11) and a second support platform (12); the first support platform (11) and the second support platform (12) are respectively used to place the back and front of the workpiece (5); Positioning structure (2), which is disposed on the base plate (1) and is used to position the workpiece (5); The fixing structure (3) and the pressing structure (4) include at least one side pressing plate (41) and a middle pressing plate (42). The side pressing plate (41) is disposed on the base plate (1), and the base plate (1) is provided with a fixing groove (13) for placing the side pressing plate (41). The middle pressing plate (42) is pressed against the upper surface of the workpiece (5) by the fixing structure (3), and the middle pressing plate (42) includes a short pressing plate (421) and a long pressing plate (422).

2. The bone plate processing fixture as described in claim 1, characterized in that, The number of the positioning structures (2) is three, one of which is located on the long axis of the workpiece (5), and the other two are located on the head of the workpiece (5).

3. The bone plate processing fixture as described in claim 2, characterized in that, The positioning structure (2) includes a positioning groove (21) and a positioning block (22). The positioning block (22) includes an integrally formed positioning block body (221) and a protrusion (222) located on one side of the positioning block body (221). The positioning groove (21) is provided on the base plate (1) and can be used to place the positioning block body (221).

4. The bone plate processing fixture as described in claim 1, characterized in that, The side pressure plate (41) is L-shaped and includes an integrally formed horizontal plate (411) and a vertical plate (412), with the horizontal plate (411) placed in the fixing groove (13).

5. The bone plate processing fixture as described in claim 4, characterized in that, The horizontal plate (411) is provided with a clearance groove (4111).

6. The bone plate processing fixture as described in claim 1, characterized in that, The fixing structure (3) includes an insert (31) and a fixing hole (32). The insert (31) is fixedly connected to the bottom of the base plate (1), and the bottom surface of the base plate (1) is provided with a groove (14) for placing the insert (31). The insert (31) is provided with an internal thread (3111). The first support platform (11), the second support platform (12), the workpiece (5), the short pressure plate (421) and the long pressure plate (422) are all provided with fixing holes (32). The screw is suitable for cooperating with the fixing hole (32) and the internal thread (3111) to fix the workpiece (5).

7. The bone plate processing fixture as described in claim 6, characterized in that, The insert (31) is provided with a fixing post (311), and the internal thread (3111) is provided inside the fixing post (311).

8. The bone plate processing fixture as described in claim 1, characterized in that, The first support platform (11) and the second support platform (12) are provided with an arc surface that is the same as the surface of the workpiece (5) to be processed.

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