Bone file clamp for three-axis machine tool machining

Abstract

The invention discloses a bone file clamp for three-axis machine tool machining. The bone file clamp comprises a C-shaped base body, a plug pin, a positioning rotating shaft, a positioning ejector head and an adapter plate. A rotating shaft of the positioning rotating shaft penetrates into a positioning hole I in the upper end of the C-shaped base body, the upper end is locked and fixed on the upper end surface of the C-shaped base body, and the side surface is positioned by a bolt; the positioning top head is inserted into a positioning hole II in the lower end of the C-shaped base body and is tightly jacked and fixed by a jacking screw fixed in a fixing hole II in the side surface of the lower end of the C-shaped base body; the C-shaped base body is fixed to a workbench of a three-axis machine tool through the adapter plate. During use, the large end head of the bone file abuts against the lower end face of the angular piece of the positioning rotating shaft, the large end head positioning shaft penetrates into the positioning hole V of the positioning rotating shaft, the large end head positioning face abuts against the positioning protrusion of the positioning rotating shaft, and the positioning pin of the small end head of the bone file penetrates into the blind hole of the positioning top head. The device is suitable for a low-price three-axis machine tool, can be used for machining bone files of various specifications, is high in universality, easy to operate and high in reliability, and greatly reduces the machining cost of the bone files.

Description

Technical Field

[0001] The invention belongs to the technical field of three-axis machine tool processing and relates to a bone rasp fixture for three-axis machine tool processing. Background Art

[0002] With the rapid development of medical and mechanical equipment, the demand for bone rasp medical devices has increased sharply. However, in view of the special feature that the steps on the four sides of the bone rasp are continuous and of different sizes, the existing three-axis machine tools cannot be processed. Five-axis machine tools have always been the main processing method. However, due to the high price of five-axis machine tools, each processing manufacturer does not have a few, and there are many products that need to be processed, which makes the five-axis machine tools very busy and cannot guarantee the rapid processing of products. Moreover, each type of product requires different tooling to be used in conjunction with it for processing. Each new type of product requires the development of new tooling, which results in a longer production cycle and cannot guarantee the timely processing of products. In addition, the existing five-axis machine tools are not special processing machines for bone rasp medical devices. The tooling structure used in conjunction is relatively complex, and the research and development time is long, which also results in a longer production cycle and a higher price. In short, it takes a long time to process various specifications of bone rasp medical devices with the existing five-axis machine tools, which is costly and complicated to operate. It cannot meet market demand, and it cannot guarantee the use of patients from low-income families. Therefore, it is urgent to develop manufacturing equipment or universal tooling for bone rasp medical devices to achieve fast and low-cost manufacturing of bone rasp medical devices. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a bone rasp fixture for three-axis machine tool processing. The fixture is suitable for low-priced three-axis machine tools and can process bone rasps of various specifications. It has high versatility, easy operation, high reliability, and greatly reduces the processing cost of bone rasps.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a bone rasp fixture for three-axis machine tool processing, including a C-shaped base, a latch, a positioning shaft, a positioning head and an adapter plate; the upper and lower ends of the C-shaped base are provided with concentric and interpenetrating positioning holes I and positioning holes II, and the upper end side surface thereof is also provided with a positioning hole III which is vertically interpenetrating with the positioning hole I, and the lower end side surface thereof is also provided with a fixing hole II which is vertically interpenetrating with the positioning hole II; the upper end of the positioning shaft is a rotating shaft which matches the clearance of the positioning hole I, and the lower end is an angular piece, and two mutually perpendicular positioning holes IV are provided on the circumference of the rotating shaft, and a positioning hole V and a positioning protrusion which match the positioning shaft and the positioning surface of the large end of the bone rasp are provided on the inner side surface of the lower end of the angular piece; the upper end surface of the positioning head is provided with a blind hole which matches the clearance of the small end of the bone rasp, and the side surface thereof is provided with a A fixing hole III that is perpendicular to the blind hole; the rotating shaft of the positioning shaft passes through the positioning hole I at the upper end of the C-shaped base, the upper end is locked and fixed to the upper end surface of the C-shaped base by screws and washers, and the side is positioned by a pin inserted into the positioning hole III and one of the positioning holes IV; the positioning head is inserted into the positioning hole II at the lower end of the C-shaped base, and is tightened and fixed by a tightening screw fixed in the fixing hole II on the side of the lower end of the C-shaped base; the C-shaped base is fixed to the workbench of the three-axis machine tool through an adapter plate; when in use, the large end of the bone rasp is pressed against the lower end surface of the angle piece of the positioning shaft, the large end positioning shaft passes through the positioning hole V of the positioning shaft, the large end positioning surface is pressed against the positioning protrusion of the positioning shaft, the positioning pin of the small end of the bone rasp passes through the blind hole of the positioning head, and is tightened and fixed by another tightening screw fixed in the fixing hole III.

[0005] Preferably, a fixing hole I is formed on the upper side of the C-shaped base body and is vertically connected to the positioning hole I, and a locking screw is connected to the rotating shaft at the upper end of the positioning rotating shaft, so as to further increase the fixing stability of the positioning rotating shaft.

[0006] The specific movement mode of the present invention is as follows: first, the positioning shaft is installed on the C-shaped base; then the large end of the bone rasp is positioned and installed on the positioning shaft; then the positioning head is moved upward, and its blind hole is inserted into the positioning pin of the small end of the bone rasp, which is pre-tightened by another tightening screw, and the pin is inserted into the positioning hole III of the C-shaped base, and passed through the corresponding positioning hole IV of the positioning shaft, so that the bone rasp is in the processing position; finally, the positioning head is tightened and fixed with the tightening screw, and the bone rasp is fixed. The present invention uses the angle piece of the positioning shaft to align the bone rasp, and uses the positioning hole V and the positioning protrusion on the angle piece to determine that the rotation center of the bone rasp coincides with the center of the positioning hole I and the positioning hole II of the C-shaped base; two mutually perpendicular positioning holes IV are set on the rotating shaft of the positioning shaft, and the positions of the four processing surfaces of the bone rasp are determined in cooperation with the insert shaft.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can be applied to bone rasps of various specifications by replacing positioning shafts of different specifications, has a wide application range, a short R&D cycle, and a low replacement cost, which greatly reduces the production time of bone rasps of various specifications; and the use of the fixture can process bone rasps on a three-axis machine tool, which greatly reduces the manufacturing cost of bone rasps, and the three-axis machine tool is low in price and relatively common, and manufacturers can purchase multiple machines, which greatly reduces the production time of bone rasps; and the present invention has a simple structure, is easy to operate, and has high production efficiency. In short, the research and development of the present invention greatly reduces the processing time and cost of medical devices such as bone rasps of various specifications, and can meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention installed on a three-axis machine tool; Figure 2 It is a schematic diagram of the three-dimensional structure of the C-shaped substrate in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning shaft in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the positioning head in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the latch in the present invention. DETAILED DESCRIPTION

[0009] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0010] like Figures 1 to 5As shown, this embodiment includes a C-shaped base 1, a latch 2, a positioning shaft 3, a positioning head 4 and an adapter plate 5. The upper and lower ends of the C-shaped base 1 are provided with concentric and intersecting positioning holes Ⅰ11 and positioning holes Ⅱ12, and the upper end side surface thereof is also provided with a positioning hole Ⅲ13 which is perpendicularly intersecting with the positioning hole Ⅰ11, and the lower end side surface thereof is also provided with a fixing hole Ⅱ15 which is perpendicularly intersecting with the positioning hole Ⅱ12. The upper end of the positioning shaft 3 is a rotating shaft 32 which matches the clearance of the positioning hole Ⅰ11, and the lower end is an angled piece 33, and the circumference of the rotating shaft 32 is provided with two mutually perpendicular positioning holes Ⅳ31, and the inner side surface of the lower end of the angled piece 33 is provided with a positioning hole Ⅴ35 and a positioning protrusion 34 which match the positioning shaft and positioning surface of the large end of the bone rasp 8. The upper end surface of the positioning head 4 is provided with a blind hole 41 which matches the clearance of the small end of the bone rasp, and the side surface thereof is provided with a fixing hole Ⅲ42 which is perpendicularly intersecting with the blind hole 41. The rotating shaft 32 of the positioning rotating shaft 3 is inserted into the positioning hole Ⅰ11 at the upper end of the C-shaped base 1, and the upper end is locked and fixed to the upper end surface of the C-shaped base 1 by screws 6 and gaskets, and the side is positioned by the pin 2 inserted into the positioning hole Ⅲ13 and one of the positioning holes Ⅳ31. The positioning head 4 is inserted into the positioning hole Ⅱ12 at the lower end of the C-shaped base 1, and is tightened and fixed by the tightening screw 10 fixed in the fixing hole Ⅱ15 at the lower end side of the C-shaped base 1. The C-shaped base 1 is fixed on the workbench of the three-axis machine tool through the adapter plate 5. When in use, the large end of the bone rasp 8 is pressed against the lower end surface of the angle piece 33 of the positioning rotating shaft 3, the large end positioning shaft is inserted into the positioning hole Ⅴ35 of the positioning rotating shaft 3, and the large end positioning surface is pressed against the positioning protrusion 34 of the positioning rotating shaft 3. The positioning pin of the small end of the bone rasp 8 is inserted into the blind hole 41 of the positioning head 4, and is tightened and fixed by another tightening screw 10 fixed in the fixing hole Ⅲ42. Preferably, a fixing hole Ⅰ14 is formed on the upper side of the C-shaped base 1 and is vertically connected to the positioning hole Ⅰ11 , and the locking screw 7 is connected to the rotating shaft 32 at the upper end of the positioning rotating shaft 3 , so as to further increase the fixing stability of the positioning rotating shaft 3 .

[0011] The specific movement mode of the present invention is as follows: first, the positioning shaft 3 is installed on the C-shaped base 1; then the large end of the bone rasp 8 is positioned and installed on the positioning shaft 3; then the positioning head 4 is moved upward, and its blind hole 41 is inserted into the positioning pin of the small end of the bone rasp 8, and is pre-tightened by another tightening screw 10, and the plug 2 is inserted into the positioning hole III13 of the C-shaped base 1, and passes through the corresponding positioning hole IV31 of the positioning shaft 3, so that the bone rasp 8 is in the processing position; finally, the positioning head 4 is tightened and fixed by the tightening screw 10, and the bone rasp 8 is fixed. The present invention uses the angled piece of the positioning shaft 3 to align the bone rasp 8, and uses the positioning hole V35 and the positioning protrusion 34 on the angled piece 33 to determine that the rotation center of the bone rasp 8 coincides with the center of the positioning hole I11 and the positioning hole II12 of the C-shaped base 1; two mutually perpendicular positioning holes IV31 are set on the rotating shaft of the positioning shaft 3, and the positions of the four processing surfaces of the bone rasp 8 are determined in cooperation with the inserting shaft 2.

[0012] Of course, the present invention has many other embodiments. Without violating the spirit and essence of the present invention, technicians familiar with the field can make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should be regarded as improvements of equivalent technologies and belong to the protection scope of the claims of the present invention.

Claims

1. A bone rasp fixture for three-axis machine tool processing, characterized in that: It comprises a C-shaped base, a latch, a positioning shaft, a positioning head and an adapter plate; the upper and lower ends of the C-shaped base are provided with concentric and interpenetrating positioning holes I and positioning holes II, the upper end side surface is provided with a positioning hole III which is vertically interpenetrating with the positioning hole I, and the lower end side surface is provided with a fixing hole II which is vertically interpenetrating with the positioning hole II; the upper end of the positioning shaft is a shaft matching the gap with the positioning hole I, and the lower end is an angled piece, two mutually perpendicular positioning holes IV are provided on the circumference of the shaft, and a positioning hole V and a positioning protrusion which match the positioning shaft and positioning surface of the large end of the bone rasp are provided on the inner side surface of the lower end of the angled piece; the upper end surface of the positioning head is provided with a blind hole matching the gap with the small end of the bone rasp, and the side surface is provided with a fixing hole III which is vertically interpenetrating with the blind hole; the positioning shaft The rotating shaft passes through the positioning hole I at the upper end of the C-shaped base, and the upper end is locked and fixed to the upper end surface of the C-shaped base by screws and gaskets, and the side is positioned by a pin inserted into the positioning hole III and one of the positioning holes IV; the positioning head is inserted into the positioning hole II at the lower end of the C-shaped base, and is tightened and fixed by a tightening screw fixed in the fixing hole II on the side of the lower end of the C-shaped base; the C-shaped base is fixed to the workbench of the three-axis machine tool through an adapter plate; when in use, the large end of the bone rasp is pressed against the lower end surface of the angle piece of the positioning rotating shaft, the large end positioning shaft passes through the positioning hole V of the positioning rotating shaft, the large end positioning surface is pressed against the positioning protrusion of the positioning rotating shaft, the positioning pin of the small end of the bone rasp passes through the blind hole of the positioning head, and is tightened and fixed by another tightening screw fixed in the fixing hole III.

2. The bone rasp fixture for three-axis machine tool processing according to claim 1, characterized in that: A fixing hole I which is vertically connected to the positioning hole I is also formed on the side surface of the upper end of the C-shaped base, and a locking screw is connected to the rotating shaft at the upper end of the positioning rotating shaft.

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