A special device for processing sector-shaped tooth pulp cavity file tooth shape and its use method

Abstract

The present invention relates to a special equipment for processing fan-shaped tooth pulp cavity file tooth shape, including a three-axis vertical machining center, a four-axis rotary table, a special milling tool and a special tool; the special tool includes a base, a top shaft, a positioning block and a top block; the base includes a connecting plate, two side plates oppositely arranged on the connecting plate and two mounting holes respectively opened on the two side plates; the two mounting holes are coaxial; a plurality of connecting holes and supporting holes are opened on the connecting plate; the top shaft is arranged on one of the mounting holes, and the positioning block is arranged on the other mounting hole; the top block is fixed above the supporting hole by a supporting pin. The special tool of the present invention is installed on the three-axis vertical machining center through a four-axis rotary table, and the special tool uses the two mounting holes on the base to respectively install the top shaft and the positioning block to clamp the file blank, and a supporting hole is designed on the base, and the top block is supported by the supporting pin to assist in supporting the file blank, thereby ensuring the accuracy of the fan-shaped tooth pulp cavity file tooth shape and improving the processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of processing equipment, and in particular to a special equipment for processing a sector-shaped tooth pulp cavity file tooth shape and a use method thereof. Background Art

[0002] Total hip replacement is a treatment for patients with hip joint diseases. The prosthesis is made of materials with good biocompatibility and mechanical properties. The joint prosthesis is implanted into the diseased joint through surgery, so that the artificial prosthesis replaces the joint part, eliminates pain and restores functional activities. During the operation, it is necessary to select medullary cavity files in sequence according to the size of the femur to gradually expand the femoral medullary cavity so that the femoral prosthesis can better match the femoral medullary cavity. At present, the market demand for medullary cavity files is huge, and the precision requirements are high. The tooth shape of the medullary cavity files is difficult to process, and special equipment, tooling and cutting tools are required for processing.

[0003] At present, the special equipment for medullary cavity tooth profile processing is the precision engraving machine, which uses special tooling and cutting tools for tooth carving. Since the precision engraving machine is a special equipment, its use is relatively limited.

[0004] Therefore, there is an urgent need for a special device for processing the tooth profile of the sector-shaped tooth pulp cavity file and a method for using the same to improve the processing efficiency and precision of the tooth profile of the sector-shaped tooth pulp cavity file. Summary of the invention

[0005] The embodiment of the present invention provides a special device for processing the tooth profile of a sector-shaped tooth pulp cavity file and a use method thereof, so as to achieve the purpose of improving the processing efficiency and precision of the tooth profile of a sector-shaped tooth pulp cavity file.

[0006] In order to overcome the above technical problems, according to an embodiment of the present invention, there is provided a special device for processing a sector-shaped tooth pulp cavity file tooth shape, comprising a three-axis vertical machining center, a four-axis rotary table, a special gear milling tool and a special tooling; the special tooling is arranged on the three-axis vertical machining center through the four-axis rotary table, and the special gear milling tool is arranged on the three-axis vertical machining center, and is used to process a file blank clamped on the special tooling; The special tooling includes a base, a top shaft, a positioning block and a top block; the base includes a connecting plate, two side plates oppositely arranged on the connecting plate and two mounting holes respectively opened on the two side plates; the two mounting holes are coaxial; a plurality of connecting holes and a plurality of supporting holes are opened on the connecting plate, and the plurality of supporting holes are arranged below the axis of the two mounting holes; the top shaft is arranged on one of the mounting holes, and an adjusting pin is arranged on the end of the top shaft; the positioning block is arranged on the other mounting hole; the top block is fixed above the supporting hole by a supporting pin.

[0007] In some embodiments, a pin hole is provided above the mounting hole.

[0008] In some embodiments, the positioning block includes a rotating shaft that matches the gap of the mounting hole and an angular piece integrally formed with the rotating shaft; two mutually perpendicular positioning holes are opened on the circumference of the rotating shaft, and a positioning groove and a positioning protrusion that match the large end of the file blank are provided on the inner side surface of the lower end of the angular piece.

[0009] In some embodiments, reinforcing ribs are provided between the two side plates and the connecting plate.

[0010] In some embodiments, the connection holes are divided into two rows and are respectively opened on both sides of the support hole.

[0011] In some embodiments, the top block is made of polytetrafluoroethylene.

[0012] A method for using a special device for processing a sector-shaped tooth pulp cavity file tooth profile, using any one of the special devices for processing a sector-shaped tooth pulp cavity file tooth profile described above, S1, fix the four-axis rotary table to the vertical machining table through the bottom plate, and fine-tune the bottom plate to make the parallelism between the four-axis rotary table and the Y axis ≤ 0.01mm, and the parallelism between the four-axis rotary table and the Z axis ≤ 0.01mm; S2, connect the adapter plate to the four-axis rotary table through screws and T-blocks, ensuring that after installation, the parallelism between the adapter plate and the Y axis is ≤0.015mm, and the parallelism between the adapter plate and the Z axis is ≤0.015mm; S3, connect the base and the adapter plate by screwing through the connection holes, ensuring that after installation, the parallelism between the axes of the two mounting holes of the base and the Y axis is ≤0.015mm; S4, insert the positioning block into one of the mounting holes, insert the latch, and use a gasket and a screw to lock the positioning block to the base; S5, inserting the top shaft into another mounting hole and connecting it to the base body through screws and spacers; S6, matching the large end of the file blank to the positioning block, adjusting the axial position of the top shaft so that the top shaft presses against the process head of the file blank, and rotating the adjusting pin to press against the process head of the file blank; S7, at least two support pins are installed in the support holes, and a top block is installed at the upper end to support the lower end surface of the file blank; S8, a special gear milling tool is installed on the Z-axis rotating spindle of the three-axis vertical machining center to process the file blank.

[0013] In some embodiments, in the step S7, a nut is installed on the supporting pin, and the nut is screwed to tighten the connecting plate to prevent the top block from separating from the file blank.

[0014] In some embodiments, S9, first perform three-sided tooth processing on the file blank. After the processing, separate the top block of the auxiliary support from the file blank, rotate the positioning block 180° and reinstall it, press the top block of the auxiliary support against the file blank, and perform tooth processing on the remaining surfaces of the file blank.

[0015] The technical solution provided by the embodiments of the present invention may have the following beneficial effects: The special tooling of the present invention is installed on a three-axis vertical machining center through a four-axis rotating table, and the special gear milling tool is installed on the Z-axis rotating spindle of the three-axis vertical machining center to process the file blank. The special tooling utilizes two mounting holes on the base to respectively install a top shaft and a positioning block to clamp the file blank, and a supporting hole is designed on the base, and the top block is supported by a supporting pin to provide auxiliary support for the file blank, thereby ensuring the accuracy of the file tooth shape of the fan-shaped tooth pulp cavity and improving the machining efficiency.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 It is a schematic diagram of the base structure of a special device for processing a sector-shaped tooth pulp cavity file tooth shape according to an exemplary embodiment.

[0019] Figure 2 It is a schematic diagram showing the use of a special device for processing a sector-shaped tooth pulp cavity file tooth shape according to an exemplary embodiment.

[0020] Figure 3 It is a schematic diagram of the positioning block structure.

[0021] Figure 4 It is a schematic diagram of the structure of a file blank.

[0022] Figure 5 This is a schematic diagram of the structure of the file blank after processing.

[0023] In the figure, 1, base; 101, connecting plate; 102, side plate; 103, mounting hole; 104, connecting hole; 105, supporting hole; 106, pin hole; 107, reinforcing rib; 2. Top shaft; 3. Adjustment pin; 4. Positioning block; 401. Rotating shaft; 402. Angle piece; 403. Positioning hole; 404. Positioning groove; 405. Positioning protrusion; 5. Top block; 6. Support pins; 7. Bottom plate; 8. Four-axis rotary table; 9. T-block; 10. Adapter plate; 11. Pin; 12. Gasket; 13. Block; 14. File blank; 15. Nut; 16. Special milling tool. DETAILED DESCRIPTION

[0024] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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 components or the interaction relationship between two components. 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] like Figure 1-5 As shown, the present invention provides a special device for processing sector-shaped tooth pulp cavity file tooth shape. Some specific embodiments are described below, including a three-axis vertical machining center, a four-axis rotary table 8, a special milling tool 16 and a special tool. The three-axis vertical machining center is a vertical machining center including an X-axis, a Y-axis and a Z-axis. The special tool is installed on the three-axis vertical machining center through the four-axis rotary table 8. The four-axis rotary table 8 is a horizontal four-axis rotary table installed on the working table of the three-axis vertical machining center. The rotation axis of the four-axis rotary table 8 is parallel to the X-axis of the three-axis vertical machining center. The special milling tool 16 is a circular saw blade, which is installed on the Z-axis rotating spindle of the three-axis vertical machining center and is used to process the file blank 14 clamped on the special tool.

[0028] The special tooling includes a base 1, a top shaft 2, a positioning block 4 and a top block 5. The base 1 includes a connecting plate 101, two side plates 102 formed opposite to each other on the connecting plate 101, and two mounting holes 103 respectively provided on the two side plates 102. When in use, the file blank 14 is fixed between the two mounting holes 103. The two mounting holes 103 are coaxial to ensure that the angles of the file blank 14 are flush after the file blank 14 is fixed. A plurality of connecting holes 104 are provided on the connecting plate 101, which are used to connect with the adapter plate 10 and install the base 1 on the adapter plate 10. A plurality of supporting holes 105 are provided on the connecting plate 101, and the plurality of supporting holes 105 are arranged below the axis of the two mounting holes 103, which are used to install the supporting nails 6, and the top block 5 is fixed on the top of the supporting nails 6, so that the top block 5 is auxiliaryly supported on the lower end surface of the file blank 14. The top shaft 2 is installed on one of the mounting holes 103, and the end of the top shaft 2 is installed with an adjusting pin 3. The positioning block 4 is installed on the other mounting hole 103. The file blank 14 is supported between the top shaft 2 and the positioning block 4. The adjusting pin 3 can be used to tighten the process head of the file blank 14.

[0029] More specifically, in addition to the above technical features, a pin hole 106 is provided above the mounting hole 103 to strengthen the position limitation of the positioning block 4 and prevent the angle of the positioning block 4 from changing during processing. The positioning block 4 includes a rotating shaft 401 that matches the gap with the mounting hole 103 and an angled piece 402 that is integrally formed with the rotating shaft 401. Two mutually perpendicular positioning holes 403 are provided on the circumference of the rotating shaft 401. The pin 11 can pass through the pin hole 106 and enter any one of the positioning holes 403 to fix the positioning block 4. The two mutually perpendicular positioning holes 403 can make the angle of the positioning block 4 fixed more, thereby changing the fixed angle of the file blank 14 and making it more convenient to process. A positioning groove 404 and a positioning protrusion 405 matching the large end of the file blank 14 are formed on the inner side surface of the lower end of the angled piece 402. When in use, the matching position of the large end of the file blank 14 is directly and correspondingly clamped on the positioning groove 404 and the positioning protrusion 405, which makes the fixation more stable and prevents the file blank 14 from rotating during processing and affecting the processing accuracy.

[0030] The material of the top block 5 is polytetrafluoroethylene. When in use, the top block 5 presses against the lower end surface of the file blank 14 to prevent damage to the file blank 14.

[0031] In order to improve the mechanical strength of the base 1 , reinforcing ribs 107 are installed between the two side plates 102 and the connecting plate 101 to ensure that the angle between the side plates 102 and the connecting plate 101 remains unchanged and the strength is higher.

[0032] In other specific embodiments, the connection holes 104 are divided into two rows, which are respectively opened on both sides of the support hole 105. More specifically, the number of the support holes 105 is five, which are arranged in a row and are located below the axis of the two mounting holes 103. The number of each row of the two rows of connection holes 104 is also five, which are evenly arranged on both sides of the support hole 105, and the strength is higher when connected to the adapter plate 10.

[0033] like Figure 2 As shown, a method for using a special device for processing a sector-shaped tooth pulp cavity file tooth shape is described, using the special device for processing a sector-shaped tooth pulp cavity file tooth shape, according to the following steps: S1, fix the four-axis rotary table 8 to the vertical machining workbench through the base plate 7, and fine-tune the base plate 7 to make the parallelism of the four-axis rotary table 8 with the Y axis ≤ 0.01mm and the parallelism with the Z axis ≤ 0.01mm.

[0034] S2, connect the adapter plate 10 to the four-axis rotating table 8 through screws and T-blocks 9, ensuring that after installation, the parallelism of the adapter plate 10 with the Y axis is ≤0.015mm, and the parallelism with the Z axis is ≤0.015mm.

[0035] S3, connect the base 1 and the adapter plate 10 by screwing through the connecting holes 104, ensuring that after installation, the parallelism between the axes of the two mounting holes 103 of the base 1 and the Y axis is ≤0.015mm.

[0036] S4, insert the positioning block 4 into one of the mounting holes 103, insert the latch 11, and use the gasket 12 and screws to lock the positioning block 4 to the base 1.

[0037] S5, insert the top shaft 2 into another mounting hole 103, and connect it to the base 1 through screws and spacers 13.

[0038] S6, insert the file blank 14 into the positioning block 4, adjust the axial position of the top shaft 2 so that the top shaft 2 presses against the process head of the file blank 14, and rotate the adjusting pin 3 to press against the process head of the file blank 14.

[0039] S7, in order to prevent the tooth surface from having chattering during the processing, the file blank 14 needs to be supported auxiliaryly, and at least two support pins 6 are installed in the support holes 105, and a top block 5 is installed at the upper end to support the lower end surface of the file blank 14. Nuts 15 are installed on the support pins 6, and the nuts 15 are screwed and pressed against the connecting plate 101 to prevent the top block 5 from separating from the file blank 14. In this specific embodiment, two support pins 6 are used to lift up two top blocks 5, and the file blank 14 is supported auxiliaryly from two places. Of course, in order to make the auxiliary support more stable, more support pins 6 can also be used.

[0040] S8, a special gear milling tool 16, is installed on the Z-axis rotating spindle of the three-axis vertical machining center to process the file blank 14.

[0041] S9, first perform three-sided tooth profile processing on the file blank 14. After the processing, separate the auxiliary support top block 5 from the file blank 14, rotate the positioning block 4 180° and reinstall it, press the auxiliary support top block 5 against the file blank 14, and perform the remaining surface tooth profile processing on the file blank 14.

[0042] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0043] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A special device for processing sector-shaped tooth pulp cavity file tooth shape, including a three-axis vertical processing machine, characterized in that: It also includes a four-axis rotary table (8), a special gear milling tool (16) and a special tool; the special tool is arranged on a three-axis vertical machining center via the four-axis rotary table (8), and the special gear milling tool (16) is arranged on the three-axis vertical machining center for machining a file blank (14) clamped on the special tool; The special tooling comprises a base (1), a top shaft (2), a positioning block (4) and a top block (5); the base (1) comprises a connecting plate (101), two side plates (102) arranged opposite to each other on the connecting plate (101) and two mounting holes (103) respectively provided on the two side plates (102); the two mounting holes (103) are coaxial; a plurality of connecting holes (104) and a plurality of supporting holes (105) are provided on the connecting plate (101), and the plurality of supporting holes (105) are arranged below the axes of the two mounting holes (103); the top shaft (2) is provided on one of the mounting holes (103), and an adjusting pin (3) is provided at the end of the top shaft (2); the positioning block (4) is provided on the other mounting hole (103); and the top block (5) is fixed above the supporting hole (105) by means of a supporting pin (6).

2. The special equipment for machining sector-shaped tooth pulp cavity file tooth profile according to claim 1, characterized in that: A pin hole (106) is provided above the mounting hole (103).

3. The special equipment for machining sector-shaped tooth pulp cavity file tooth profile according to claim 2, characterized in that: The positioning block (4) comprises a rotating shaft (401) having a clearance matching that of the mounting hole (103) and an angled piece (402) integrally formed with the rotating shaft (401); two mutually perpendicular positioning holes (403) are provided on the circumference of the rotating shaft (401); a positioning groove (404) and a positioning protrusion (405) matching the large end of the file blank (14) are provided on the inner side surface of the lower end of the angled piece (402).

4. The special equipment for machining sector-shaped tooth pulp cavity file tooth profile according to claim 1, characterized in that: Reinforcement ribs (107) are provided between the two side plates (102) and the connecting plate (101).

5. The special equipment for machining sector-shaped tooth pulp cavity file tooth profile according to claim 1, characterized in that: The connection holes (104) are divided into two rows, and are respectively opened on both sides of the support hole (105).

6. The special equipment for machining sector-shaped tooth pulp cavity file tooth profile according to claim 1, characterized in that: The material of the top block (5) is polytetrafluoroethylene.

7. A method for using a special device for processing a sector-shaped tooth pulp cavity file tooth profile, characterized in that: The special equipment for machining the tooth profile of the sector-shaped tooth pulp cavity file as described in any one of claims 1 to 6 is used. S1, fix the four-axis rotary table (8) to the vertical machining workbench through the base plate (7), and fine-tune the base plate (7) so that the parallelism of the four-axis rotary table (8) with the Y axis is ≤0.01 mm, and the parallelism with the Z axis is ≤0.01 mm; S2, connect the adapter plate (10) to the four-axis rotary table (8) by means of screws and T-blocks (9), ensuring that after installation, the adapter plate (10) is parallel to the Y axis ≤ 0.015 mm, and parallel to the Z axis ≤ 0.015 mm; S3, connecting the base (1) and the adapter plate (10) by passing screws through the connecting holes (104), ensuring that after the installation, the axes of the two mounting holes (103) of the base (1) are parallel to the Y axis by ≤0.015 mm; S4, insert the positioning block (4) into one of the mounting holes (103), insert the latch (11), and use a gasket (12) and a screw to lock the positioning block (4) to the base (1); S5, inserting the top shaft (2) into another mounting hole (103), and connecting it to the base (1) via screws and spacers (13); S6, matching the large end of the file blank (14) on the positioning block (4), adjusting the axial position of the top shaft (2) so that the top shaft (2) presses against the process head of the file blank (14), and rotating the adjusting pin (3) to press against the process head of the file blank (14); S7, using at least two support pins (6) to be installed in the support hole (105), and installing a top block (5) at the upper end to support the lower end surface of the file blank (14); S8, a special gear milling tool (16) is installed on the Z-axis rotating spindle of the three-axis vertical machining center to process the file blank (14).

8. The method for using the special equipment for processing the tooth profile of the sector-shaped tooth pulp cavity according to claim 7, characterized in that: In the step S7, a nut (15) is installed on the supporting pin (6), and the nut (15) is screwed to press the connecting plate (101) to prevent the top block (5) from being separated from the file blank (14).

9. The method for using the special equipment for processing the tooth profile of the sector-shaped dental pulp cavity according to claim 8, characterized in that: S9, firstly perform three-sided tooth profile processing on the file blank (14), after which the auxiliary support top block (5) is separated from the file blank (14), the positioning block (4) is rotated 180 degrees and reinstalled, the auxiliary support top block (5) is pressed against the file blank (14), and the remaining surface tooth profile of the file blank (14) is processed.

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