Positioning equipment for processing false tooth die holder

Abstract

The invention relates to the field of false tooth die holders, in particular to a positioning device for machining a false tooth die holder, which comprises a die holder, a major arc clamping ring, a first end face limiting major arc ring, a second end face limiting major arc ring and a positioning block. And accurate positioning and fixing of the false tooth die holder are realized. The technical effects of improving the machining precision of the false tooth die holder, enhancing the positioning stability and being convenient to disassemble and assemble are achieved.

Description

Technical Field

[0001] This application relates to the field of denture bases, and in particular to a positioning device for processing denture bases. Background Art

[0002] Currently, denture processing equipment plays a key role in the modern medical field. The core lies in ensuring the processing quality of denture bases through a high-precision mechanical structure, thereby improving the wearing comfort and overall user experience of patients.

[0003] In related technologies, the workpiece for processing denture bases is usually a circular zirconia plate with a notch. The circular zirconia plate is usually fixed by placing it in a semi-circular base. During the positioning process of the circular zirconia plate, workers need to continuously rotate the circular zirconia plate to find the position. After finding the corresponding suitable position, the circular zirconia plate is fixed on the processing equipment for processing.

[0004] For the above related technologies, there are the following defects: It is difficult to find the position manually. Summary of the Invention

[0005] In order to reduce the difficulty of finding the position, this application provides a positioning device for processing denture bases.

[0006] The positioning device for processing denture bases provided by this application adopts the following technical solution: A positioning device for processing denture bases includes a base, a major arc clamping ring, a first end face limiting major arc ring, a second end face limiting major arc ring, and a positioning block. The major arc clamping ring, the first end face limiting major arc ring, and the second end face limiting major arc ring are coaxially installed on the base, and the major arc clamping ring is located between the first end face limiting major arc ring and the second end face limiting major arc ring; The inner diameter of the major arc clamping ring is smaller than the inner diameter of the first end face limiting major arc ring and the inner diameter of the second end face limiting major arc ring; The positioning block is arranged inside the major arc clamping ring; The first end face limiting major arc ring is fixedly connected to the base; the major arc clamping ring is detachably connected to the base; the second end face limiting major arc ring is detachably connected to the major arc clamping ring; the positioning block is detachably connected to the second end face limiting major arc ring; A locking assembly is connected between the second end face limiting major arc ring and the major arc clamping ring; The locking assembly includes a round rod and a pressing block. The round rod is arranged along the axial direction of the major arc clamping ring, and the first end of the round rod is rotatably connected to the major arc clamping ring; The pressing block is arranged on the side of the second-end surface limiting arc-shaped ring away from the arc-shaped clamping ring, and is connected to the side wall of the second end of the round rod; An axially arranged round through-hole and a long through-hole are provided on the second-end surface limiting arc-shaped ring, and one end in the length direction of the long through-hole is communicated with the round through-hole; The round rod is located in the round through-hole, and the long through-hole is for the pressing block to pass through.

[0007] By adopting the above technical solution, the workpiece for machining the denture base is usually a circular zirconia plate with a notch. When fixing the circular zirconia plate, place the circular zirconia plate inside the arc-shaped clamping ring, make the notch of the circular zirconia plate abut against the positioning block, so that the circular zirconia plate cannot rotate inside the arc-shaped clamping ring, and the arc-shaped structure of the arc-shaped clamping ring itself makes the circular zirconia plate unable to separate from the arc-shaped clamping ring in the radial direction, thereby realizing the rapid positioning of the circular zirconia plate in the radial direction of the arc-shaped clamping ring. The first-end surface limiting arc-shaped ring and the second-end surface limiting arc-shaped ring clamp the circular zirconia plate to realize the clamping of the circular zirconia plate, and further realize the rapid positioning of the circular zirconia plate in the axial direction of the arc-shaped clamping ring. The first-end surface limiting arc-shaped ring is fixedly connected to the mold base, ensuring the stability of the device, avoiding displacement during the machining process, and limiting one surface of the circular zirconia plate. The arc-shaped clamping ring is detachably connected to the mold base, facilitating the replacement or adjustment of the clamping ring according to the machining requirements. The second-end surface limiting arc-shaped ring is detachably connected to the arc-shaped clamping ring. When fixing the circular zirconia plate, first disassemble the second-end surface limiting arc-shaped ring, place the circular zirconia plate along the axial direction of the arc-shaped clamping ring into the arc-shaped clamping ring, and then install the second-end surface limiting arc-shaped ring. The positioning block is detachably connected to the second-end surface limiting arc-shaped ring, so that the positioning block can be quickly replaced according to specific machining requirements to adapt to the machining requirements of different types of denture bases. When installing the second-end surface limiting arc-shaped ring and rotating the locking assembly, while the round rod passes through the round through-hole, the pressing block can also pass through the long through-hole. After the second-end surface limiting arc-shaped ring contacts the arc-shaped clamping ring, the pressing block is exactly located on the side of the second-end surface limiting arc-shaped ring away from the arc-shaped clamping ring. At this time, rotate the round rod to make the pressing block contact the part of the second-end surface limiting arc-shaped ring on the side of the long through-hole, and then the pressing block cooperates with the arc-shaped clamping ring to clamp the second-end surface limiting arc-shaped ring to realize the limiting of the second-end surface limiting arc-shaped ring. In summary, the present application can realize the rapid and accurate fixation of the circular zirconia block.

[0008] Preferably, a positioning rod is arranged on the pressing block along the length direction of the round rod, and the first end of the positioning rod is movably connected to the pressing block; A positioning hole is provided on the second-end surface limiting arc-shaped ring, and the second end of the positioning rod is for inserting into the positioning hole.

[0009] By adopting the above technical solution, after the pressing block cooperates with the major-arc clamping ring to clamp the second-end surface limiting major-arc ring, the second end of the positioning rod is inserted into the positioning hole to limit the relative position between the pressing block and the second-end surface limiting major-arc ring. The matching design of the positioning rod and the positioning hole effectively prevents the pressing block from loosening or shifting during operation, enabling the pressing block to cooperate with the major-arc clamping ring to stably clamp the second-end surface limiting major-arc ring.

[0010] Preferably, the major-arc clamping ring is provided with a screw hole axially arranged, and the first end of the round rod is screwed with the screw hole.

[0011] By adopting the above technical solution, when the pressing block is rotated towards the positioning hole, the rotation direction of the round rod is the tightening direction. Then, when the pressing block rotates to the positioning hole part, the round rod is just tightened, enabling the pressing block to firmly press the second-end surface limiting major-arc ring against the major-arc clamping ring, further effectively preventing the pressing block from loosening or shifting during operation, and further making the fixation of the second-end surface limiting major-arc ring more stable.

[0012] Preferably, an elastic washer sleeved on the positioning rod is provided on the surface of the pressing block facing the second-end surface limiting major-arc ring.

[0013] By adopting the above technical solution, the setting of the elastic washer can effectively increase the friction between the pressing block and the second-end surface limiting major-arc ring, thereby enhancing the stability of the locking assembly in the working state. At the same time, the elastic washer can also provide a certain buffering effect during the pressing process of the pressing block, avoiding component damage caused by excessive pressing and prolonging the service life of the equipment. In addition, the elastic characteristic of the elastic washer can also compensate for dimensional changes caused by machining errors or thermal expansion and contraction, ensuring the reliability of the locking effect.

[0014] Preferably, an arc-shaped guide groove is provided on the surface of the second-end surface limiting major-arc ring away from the major-arc clamping ring, and the arc-shaped guide groove is distributed along the circumferential direction of the round through-hole; The positioning hole is located at the bottom of the first end of the arc-shaped guide groove, and in the direction from the second end of the arc-shaped guide groove to the first end of the arc-shaped guide groove, the round rod is gradually tightened.

[0015] By adopting the above technical solution, first rotate the round rod towards the second end of the arc-shaped guide groove. When the positioning rod is opposite to the arc-shaped guide groove, move the positioning rod towards the arc-shaped guide groove so that the second end of the positioning rod is inserted into the arc-shaped guide groove. Then continue to rotate the positioning rod towards the first end of the arc-shaped guide groove, causing the positioning rod to slide towards the first end of the arc-shaped guide groove. When the positioning rod moves to the first end of the arc-shaped guide groove, the positioning rod is just opposite to the positioning hole. At this time, move the positioning rod towards the positioning hole, and the positioning rod can be exactly inserted into the positioning hole, thereby ensuring that when the round rod is rotated, the positioning rod can be rotated in place at one time, enabling the positioning rod to be quickly inserted into the positioning hole.

[0016] Preferably, the pressing block is provided with guiding holes distributed along the axial direction of the round rod, and the first end of the positioning rod is located within the guiding holes; A limiting ring coaxially installed within the guiding hole is provided on the side of the positioning rod away from the positioning hole; A pull rod connected to the positioning rod is provided inside the limiting ring; An elastic member is connected between the limiting ring and the positioning rod.

[0017] By adopting the above technical solution, the positioning rod moves within the guiding hole of the pressing block, ensuring the accurate movement direction of the positioning rod and avoiding deviation. The setting of the limiting ring effectively limits the movement range of the positioning rod, preventing structural failure caused by excessive expansion and contraction. The pull rod connects the limiting ring and the positioning rod, facilitating the operator to manually adjust the position of the positioning rod. The addition of the elastic member enables the positioning rod to automatically insert into the arc-shaped guiding groove and the positioning hole when no external force is applied, improving the convenience and stability of equipment use.

[0018] Preferably, magnetic members are provided at the opposite ends of the limiting ring and the positioning rod, and the two magnetic members repel each other.

[0019] By adopting the above technical solution, the setting of the magnetic members generates a repulsive force between the limiting ring and the positioning rod, thereby providing stable guiding and resetting effects during the movement of the positioning rod. When the external tensile force borne by the positioning rod is removed, the repulsive force of the magnetic members can assist the positioning rod to quickly reset, enabling the positioning rod to automatically insert into the arc-shaped guiding groove and the positioning hole when no external force is applied, improving the convenience and stability of equipment use.

[0020] Preferably, the major arc clamping ring is provided with temporary limiting holes inside the long through holes. When the pressing block is located inside the long through holes, the second end of the positioning rod is used to insert into the temporary limiting holes.

[0021] By adopting the above technical solution, when installing the second-end surface limiting major arc ring, it is necessary to rotate the round rod in advance so that the round rod passes through the round through hole while the pressing block can also pass through the long through hole. When the pressing block is at the position where it can pass through the long through hole, the positioning rod is exactly opposite to the temporary limiting hole. At this time, the positioning rod is inserted into the temporary limiting hole to limit the position of the pressing block, ensuring that the pressing block can stably pass through the long through hole during the installation of the second-end surface limiting major arc ring. After the second-end surface limiting major arc ring contacts the major arc clamping ring, the positioning rod is retracted into the guiding hole, and the pressing block is rotated to insert the positioning rod into the positioning hole.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. In this application, through the cooperation of the major arc clamping ring and the positioning block, the positioning of the disc-shaped zirconia block can be quickly achieved, significantly improving the processing efficiency.

[0023] 2. In this application, the structural design of the first-end-face limiting major arc ring and the second-end-face limiting major arc ring is adopted to ensure the stability of the disc-shaped zirconia block during the processing, avoiding processing errors caused by loosening.

[0024] 3. In this application, the design of the locking component can quickly fix the second-end-face limiting major arc ring, realizing the quick fixation of the disc-shaped zirconia block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following-described drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is the overall structural schematic diagram of clamping the disc-shaped zirconia in the embodiment of the present application; Figure 2 is the overall structural schematic diagram of not clamping the disc-shaped zirconia in the embodiment of the present application; Figure 3 is Figure 2 the exploded structural schematic diagram; Figure 4 is Figure 2 the sectional structural schematic diagram of the locking component in

[0027] REFERENCE SIGNS: 1, die holder; 101, receiving groove; 11, connecting rotating shaft; 2, major arc clamping ring; 201, screw hole; 202, temporary limiting hole; 3, first-end-face limiting major arc ring; 30, first extension; 301, first limiting slot; 4, second-end-face limiting major arc ring; 40, second extension; 401, second limiting slot; 402, circular through hole; 403, long through hole; 404, arc-shaped guide groove; 405, positioning hole; 5, positioning block; 51, first plug; 52, second plug; 6, locking component; 61, round rod; 62, pressing block; 6201, guide hole; 621, elastic washer; 63, limiting ring; 64, pull rod; 641, pull ring; 65, positioning rod; 66, magnetic part; 67, elastic part; 7, disc-shaped zirconia. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will further elaborate on the present application in conjunction with the attached Figures 1-4 drawings.

[0029] An embodiment of the present application discloses a positioning device for processing a denture base.

[0030] Referring to Figure 1 , a positioning device for processing a denture base includes a base 1, a superior arc clamping ring 2, a first end face limiting superior arc ring 3, a second end face limiting superior arc ring 4, and a positioning block 5. The base 1 is provided with a receiving groove 101 having a superior arc in the radial cross-section. At both ends of the side wall of the base 1, a connecting rotating shaft 11 is provided respectively. The two connecting rotating shafts 11 are coaxial and both are arranged along the radius direction of the receiving groove 101. The connecting rotating shaft 11 is a conventional component for docking with a denture processing device.

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , the superior arc clamping ring 2, the first end face limiting superior arc ring 3, and the second end face limiting superior arc ring 4 are all circular ring structures with a superior arc in the radial cross-section. The superior arc clamping ring 2, the first end face limiting superior arc ring 3, and the second end face limiting superior arc ring 4 are coaxially installed on the base 1. The superior arc clamping ring 2, the first end face limiting superior arc ring 3, and the second end face limiting superior arc ring 4 are all coaxially arranged inside the receiving groove 101. The notches of the superior arc clamping ring 2, the first end face limiting superior arc ring 3, the second end face limiting superior arc ring, and the notch of the receiving groove 101 face the same direction, and the superior arc clamping ring 2 is located between the first end face limiting superior arc ring 3 and the second end face limiting superior arc ring 4. The inner diameter of the superior arc clamping ring 2 is smaller than the inner diameter of the first end face limiting superior arc ring 3 and the inner diameter of the second end face limiting superior arc ring 4. The positioning block 5 is arranged inside the superior arc clamping ring 2.

[0032] Referring to Figure 1 , Figure 2 and Figure 3 , in the embodiment of the present application, the workpiece for processing the denture base is usually a circular plate-shaped zirconia 7 with a notch. When fixing the circular plate-shaped zirconia 7, place the circular plate-shaped zirconia 7 inside the superior arc clamping ring 2, make the notch of the circular plate-shaped zirconia 7 abut against the positioning block 5, so that the circular plate-shaped zirconia 7 cannot rotate inside the superior arc clamping ring 2, and the superior arc structure of the superior arc clamping ring 2 itself makes the circular plate-shaped zirconia 7 unable to separate from the superior arc clamping ring 2 in the radial direction of the superior arc clamping ring 2, thereby realizing the rapid positioning of the circular plate-shaped zirconia 7 in the radial direction of the superior arc clamping ring 2. The first end face limiting superior arc ring 3 and the second end face limiting superior arc ring 4 clamp the circular plate-shaped zirconia 7 to realize the clamping of the circular plate-shaped zirconia 7, thereby realizing the rapid positioning of the circular plate-shaped zirconia 7 in the axial direction of the superior arc clamping ring 2. In summary, the present application can realize the rapid and accurate fixation of the circular plate-shaped zirconia 7 block.

[0033] Referring to Figure 2 , Figure 3 andFigure 4 The first-end surface limiting arc ring 3 is fixedly connected to the die base 1. The arc clamping ring 2 is detachably connected to the die base 1. Specifically, the arc clamping ring 2 and the die base 1 are fixedly connected by means such as bolt connection. The second-end surface limiting arc ring 4 is detachably connected to the arc clamping ring 2. The positioning block 5 is detachably connected to the second-end surface limiting arc ring 4. Specifically, a first extension 30 and a second extension 40 are respectively installed on the inner sides of the first-end surface limiting arc ring 3 and the second-end surface limiting arc ring 4. First limiting slots 301 and second limiting slots 401 are respectively provided on the opposite surfaces of the first extension 30 and the second extension 40. First plugs 51 and second plugs 52 are respectively provided at both ends of the positioning block 5. When fixing the positioning block 5, the first plug 51 is inserted into the first limiting slot 301, and the second plug 52 is inserted into the second limiting slot 401.

[0034] Refer to Figure 2 , Figure 3 and Figure 4 , in the embodiment of the present application, the first-end surface limiting arc ring 3 is fixedly connected to the die base 1, ensuring the stability of the device, avoiding displacement during the processing, and limiting one surface of the circular plate-shaped zirconia 7. The arc clamping ring 2 is detachably connected to the die base 1, facilitating the replacement or adjustment of the clamping ring according to the processing requirements. The second-end surface limiting arc ring 4 is detachably connected to the arc clamping ring 2. When fixing the circular plate-shaped zirconia 7, first disassemble the second-end surface limiting arc ring 4, place the circular plate-shaped zirconia 7 along the axis direction of the arc clamping ring 2 into the arc clamping ring 2, and then install the second-end surface limiting arc ring 4. The first-end surface limiting arc ring 3 and the second-end surface limiting arc ring 4 clamp the circular plate-shaped zirconia 7, realizing the clamping of the circular plate-shaped zirconia 7, and further realizing the rapid positioning of the circular plate-shaped zirconia 7 in the axis direction of the arc clamping ring 2. The positioning block 5 is detachably connected to the second-end surface limiting arc ring 4, enabling the positioning block 5 to be quickly replaced according to specific processing requirements to adapt to the processing requirements of different types of denture bases 1.

[0035] Refer to Figure 2 , Figure 3 and Figure 4 , a locking assembly 6 is connected between the second-end surface limiting arc ring 4 and the arc clamping ring 2. The locking assembly 6 includes a round rod 61 and a pressing block 62. The round rod 61 is arranged along the axis direction of the arc clamping ring 2, and the first end of the round rod 61 is rotatably connected to the arc clamping ring 2. The pressing block 62 is provided on the side of the second-end surface limiting arc ring 4 away from the arc clamping ring 2 and is connected to the side wall of the second end of the round rod 61. An axially arranged circular through-hole 402 and a long through-hole 403 are provided on the second-end surface limiting arc ring 4. One end of the long through-hole 403 in the length direction is communicated with the circular through-hole 402. The round rod 61 is located in the circular through-hole 402, and the long through-hole 403 is for the pressing block 62 to pass through.

[0036] Referring to Figure 2 、 Figure 3 and Figure 4 In the embodiment of the present application, when installing the second-end surface limiting arc ring 4 and rotating the locking assembly 6, while the round rod 61 passes through the round through-hole 402, the pressing block 62 can also pass through the long through-hole 403. After the second-end surface limiting arc ring 4 contacts the arc-shaped clamping ring 2, the pressing block 62 is exactly located on the side of the second-end surface limiting arc ring 4 away from the arc-shaped clamping ring 2. At this time, rotate the round rod 61 to make the pressing block 62 contact the part of the second-end surface limiting arc ring 4 on the side of the long through-hole 403, so that the pressing block 62 cooperates with the arc-shaped clamping ring 2 to clamp the second-end surface limiting arc ring 4, so as to realize the limiting of the second-end surface limiting arc ring 4.

[0037] Referring to Figure 2 、 Figure 3 and Figure 4 A positioning rod 65 is arranged on the pressing block 62 along the length direction of the round rod 61, and the first end of the positioning rod 65 is movably connected to the pressing block 62. A positioning hole 405 is arranged on the second-end surface limiting arc ring 4, and the second end of the positioning rod 65 is used to insert into the positioning hole 405.

[0038] Referring to Figure 2 、 Figure 3 and Figure 4 In the embodiment of the present application, after the pressing block 62 cooperates with the arc-shaped clamping ring 2 to clamp the second-end surface limiting arc ring 4, the second end of the positioning rod 65 is inserted into the positioning hole 405 to limit the relative position between the pressing block 62 and the second-end surface limiting arc ring 4. The matching design of the positioning rod 65 and the positioning hole 405 effectively prevents the pressing block 62 from loosening or shifting during operation, so that the pressing block 62 can stably clamp the second-end surface limiting arc ring 4 in cooperation with the arc-shaped clamping ring 2.

[0039] Referring to Figure 2 、 Figure 3 and Figure 4 An axially arranged threaded hole 201 is arranged on the arc-shaped clamping ring 2, and the first end of the round rod 61 is screwed to the threaded hole 201.

[0040] Referring to Figure 2 、 Figure 3 and Figure 4 In the embodiment of the present application, when rotating the pressing block 62 in the direction of the positioning hole 405, the rotation direction of the round rod 61 is the tightening direction. When the pressing block 62 rotates to the position of the positioning hole 405, the round rod 61 is just tightened, so that the pressing block 62 firmly presses the second-end surface limiting arc ring 4 on the arc-shaped clamping ring 2, further effectively preventing the pressing block 62 from loosening or shifting during operation, and further making the fixing of the second-end surface limiting arc ring 4 more stable.

[0041] Referring to Figure 2 , Figure 3 and Figure 4 , one side of the briquetting block 62 facing the second end face limiting arc-shaped ring 4 is provided with an elastic washer 621 sleeved on the positioning rod 65.

[0042] Referring to Figure 2 , Figure 3 and Figure 4 , in the embodiment of the present application, the setting of the elastic washer 621 can effectively increase the friction force between the briquetting block 62 and the second end face limiting arc-shaped ring 4, thereby improving the stability of the locking assembly 6 in the working state. At the same time, the elastic washer 621 can also provide a certain buffering effect during the pressing process of the briquetting block 62, avoiding component damage caused by excessive pressing and extending the service life of the equipment. In addition, the elastic characteristics of the elastic washer 621 can also compensate for the dimensional changes caused by processing errors or thermal expansion and contraction, ensuring the reliability of the locking effect.

[0043] Referring to Figure 2 , Figure 3 and Figure 4 , one side of the second end face limiting arc-shaped ring 4 away from the arc-shaped clamping ring 2 is provided with an arc-shaped guide groove 404, and the arc-shaped guide groove 404 is distributed along the circumferential direction of the circular through hole 402. The positioning hole 405 is located at the bottom of the first end of the arc-shaped guide groove 404, and in the direction from the second end of the arc-shaped guide groove 404 to the first end of the arc-shaped guide groove 404, the round rod 61 is gradually tightened.

[0044] Referring to Figure 2 , Figure 3 and Figure 4 , in the embodiment of the present application, first rotate the round rod 61 towards the second end of the arc-shaped guide groove 404. When the positioning rod 65 is opposite to the arc-shaped guide groove 404, move the positioning rod 65 towards the arc-shaped guide groove 404 so that the second end of the positioning rod 65 is inserted into the arc-shaped guide groove 404. Then continue to rotate the positioning rod 65 towards the first end of the arc-shaped guide groove 404 so that the positioning rod 65 slides towards the first end of the arc-shaped guide groove 404 of the arc-shaped guide groove 404. When the positioning rod 65 moves to the first end of the arc-shaped guide groove 404, the positioning rod 65 is exactly opposite to the positioning hole 405. At this time, move the positioning rod 65 towards the positioning hole 405, and the positioning rod 65 can be exactly inserted into the positioning hole 405, thereby ensuring that when the round rod 61 is rotated, the positioning rod 65 can be rotated in place at one time, so that the positioning rod 65 can be quickly inserted into the positioning hole 405.

[0045] Referring to Figure 2 , Figure 3 and Figure 4, the briquette 62 is provided with a guiding hole 6201 axially distributed along the round rod 61, and the first end of the positioning rod 65 is located in the guiding hole 6201. A limiting ring 63 coaxially installed in the guiding hole 6201 is provided on the side of the positioning rod 65 away from the positioning hole 405. A pull rod 64 connected to the positioning rod 65 is provided inside the limiting ring 63. One end of the pull rod 64 away from the positioning rod 65 is provided with a pull ring 641 located outside the briquette 62, and the pull rod 64 is pulled through the pull ring 641. An elastic member 67 is connected between the limiting ring 63 and the positioning rod 65. Specifically, the elastic member 67 is an elastic component such as a spring that can expand and contract along the length direction of the positioning rod 65.

[0046] Referring to Figure 2 , Figure 3 and Figure 4 , in the embodiment of the present application, the positioning rod 65 moves in the guiding hole 6201 of the briquette 62, ensuring the accurate movement direction of the positioning rod 65 and avoiding deviation. The setting of the limiting ring 63 effectively limits the movement range of the positioning rod 65, preventing structural failure caused by excessive expansion and contraction. The pull rod 64 connects the limiting ring 63 and the positioning rod 65, facilitating the operator to manually adjust the position of the positioning rod 65. The addition of the elastic member 67 enables the positioning rod 65 to automatically insert into the arc-shaped guide groove 404 and the positioning hole 405 when no external force is applied, improving the convenience and stability of equipment use.

[0047] Referring to Figure 2 , Figure 3 and Figure 4 , magnetic members 66 are provided at the opposite ends of the limiting ring 63 and the positioning rod 65, and the two magnetic members 66 repel each other.

[0048] Referring to Figure 2 , Figure 3 and Figure 4 , in the embodiment of the present application, the setting of the magnetic member 66 generates a repulsive force between the limiting ring 63 and the positioning rod 65, thereby providing a stable guiding and resetting effect during the movement of the positioning rod 65. When the external pulling force on the positioning rod 65 is removed, the repulsive force of the magnetic member 66 can assist the positioning rod 65 to quickly reset, enabling the positioning rod 65 to automatically insert into the arc-shaped guide groove 404 and the positioning hole 405 when no external force is applied, improving the convenience and stability of equipment use.

[0049] Referring to Figure 2 , Figure 3 and Figure 4 , a temporary limiting hole 202 is provided on the major arc clamping ring 2 inside the long through hole 403. When the briquette 62 is located inside the long through hole 403, the second end of the positioning rod 65 is used to insert into the temporary limiting hole 202.

[0050] Referring to Figure 2 , Figure 3 andFigure 4 In the embodiment of the present application, when installing the second-end-face limiting circular arc ring 4, the round rod 61 needs to be rotated in advance so that when the round rod 61 passes through the round through-hole 402, the pressing block 62 can also pass through the long through-hole 403. When the pressing block 62 is at the position where it can pass through the long through-hole 403, the positioning rod 65 is exactly opposite to the temporary limiting hole 202. At this time, the positioning rod 65 is inserted into the temporary limiting hole 202 to limit the position of the pressing block 62, ensuring that the pressing block 62 can stably pass through the long through-hole 403 during the installation of the second-end-face limiting circular arc ring 4. After the second-end-face limiting circular arc ring 4 contacts the circular arc clamping ring 2, the positioning rod 65 is retracted into the guiding hole 6201, and the pressing block 62 is rotated to insert the positioning rod 65 into the positioning hole 405.

[0051] The implementation principle of the positioning device for processing a denture base in the embodiment of the present application is as follows: The workpiece for processing the denture base is usually a circular zirconia 7 with a notch. When fixing the circular zirconia 7, the second-end-face limiting circular arc ring 4 is first disassembled. After the circular zirconia 7 is placed into the circular arc clamping ring 2 along the axial direction of the circular arc clamping ring 2, the notch of the circular zirconia 7 abuts against the positioning block 5, so that the circular zirconia 7 cannot rotate inside the circular arc clamping ring 2, and the circular arc structure of the circular arc clamping ring 2 itself makes the circular zirconia 7 unable to separate from the circular arc clamping ring 2 in the radial direction of the circular arc clamping ring 2, thereby realizing the rapid positioning of the circular zirconia 7 in the radial direction of the circular arc clamping ring 2. The first-end-face limiting circular arc ring 3 and the second-end-face limiting circular arc ring 4 clamp the circular zirconia 7 to realize the clamping of the circular zirconia 7, and thus realize the rapid positioning of the circular zirconia 7 in the axial direction of the circular arc clamping ring 2.

[0052] When fixing the second-end-face limiting circular arc ring 4, the round rod 61 needs to be rotated in advance so that the positioning rod 65 is inserted into the temporary limiting hole 202. During the process of the second-end-face limiting circular arc ring 4 approaching the circular arc clamping ring 2, when the round rod 61 passes through the round through-hole 402, the pressing block 62 can also pass through the long through-hole 403.

[0053] After the second-end surface limiting major-arc ring 4 contacts with the major-arc clamping ring 2, pull the pull rod 64 outwards again to make the positioning rod 65 retract into the guiding hole 6201. Then, first rotate the pressing block 62 towards the second end of the arc-shaped guiding groove 404. When the positioning rod 65 is opposite to the arc-shaped guiding groove 404, move the positioning rod 65 towards the arc-shaped guiding groove 404 to insert the second end of the positioning rod 65 into the arc-shaped guiding groove 404. Then, continue to rotate the positioning rod 65 towards the first end of the arc-shaped guiding groove 404 to make the positioning rod 65 slide towards the first end of the arc-shaped guiding groove 404 of the arc-shaped guiding groove 404. When the positioning rod 65 moves to the first end of the arc-shaped guiding groove 404, the positioning rod 65 is exactly opposite to the positioning hole 405. At this time, move the positioning rod 65 towards the positioning hole 405, and the positioning rod 65 can be exactly inserted into the positioning hole 405, thereby ensuring that when the rotating round rod 61 is rotated, the positioning rod 65 can be rotated in place at one time, so that the positioning rod 65 can be quickly inserted into the positioning hole 405.

[0054] Wherein, after the positioning rod 65 abuts against the second-end surface limiting major-arc ring 4, release the pulling of the pull rod 64 and only maintain the rotation of the pressing block 62. Under the action of the reset elastic force of the elastic member 67 and the repulsive force of the magnetic member 66, the positioning rod 65 can be automatically pushed towards the arc-shaped guiding groove 404 and the positioning hole 405 to realize the automatic positioning between the positioning rod 65, the arc-shaped guiding groove 404 and the positioning hole 405.

[0055] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The terms "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms such as "up", "down", "left", "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0056] The above are all optional embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A positioning device for processing a denture base, characterized in that: It includes a die base (1), a major arc clamping ring (2), a first end face limiting major arc ring (3), a second end face limiting major arc ring (4) and a positioning block (5). The major arc clamping ring (2), the first end face limiting major arc ring (3) and the second end face limiting major arc ring (4) are coaxially installed on the die base (1), and the major arc clamping ring (2) is located between the first end face limiting major arc ring (3) and the second end face limiting major arc ring (4). The inner diameter of the major arc clamping ring (2) is smaller than the inner diameters of the first end face limiting major arc ring (3) and the second end face limiting major arc ring (4). The positioning block (5) is arranged inside the major arc clamping ring (2). The first end face limiting major arc ring (3) is fixedly connected to the die base (1). The major arc clamping ring (2) is detachably connected to the die base (1). The second end face limiting major arc ring (4) is detachably connected to the major arc clamping ring (2). The positioning block (5) is detachably connected to the second end face limiting major arc ring (4). A locking assembly (6) is connected between the second end face limiting major arc ring (4) and the major arc clamping ring (2). The locking assembly (6) includes a round rod (61) and a pressing block (62). The round rod (61) is arranged along the axial direction of the major arc clamping ring (2), and the first end of the round rod (61) is rotatably connected to the major arc clamping ring (2). The pressing block (62) is arranged on the side of the second end face limiting major arc ring (4) away from the major arc clamping ring (2) and is connected to the side wall of the second end of the round rod (61). An axially arranged round through hole (402) and a long through hole (403) are provided on the second end face limiting major arc ring (4), and one end in the length direction of the long through hole (403) is communicated with the round through hole (402). The round rod (61) is located in the round through hole (402), and the long through hole (403) is for the pressing block (62) to pass through.

2. A positioning device for a dental prosthesis die base according to claim 1, wherein: A positioning rod (65) is arranged on the pressing block (62) along the length direction of the round rod (61), and the first end of the positioning rod (65) is movably connected to the pressing block (62). A positioning hole (405) is provided on the second end face limiting major arc ring (4), and the second end of the positioning rod (65) is for inserting into the positioning hole (405).

3. The positioning device for processing a denture base according to claim 2, wherein: A threaded hole (201) is axially provided on the major arc clamping ring (2), and the first end of the round rod (61) is screwed into the threaded hole (201).

4. The positioning device for processing a denture base according to claim 3, characterized in that: An elastic washer (621) sleeved on the positioning rod (65) is arranged on the surface of the pressing block (62) facing the second end face limiting major arc ring (4).

5. The positioning device for processing a denture base according to claim 4, characterized in that: An arc-shaped guide groove (404) is provided on the side of the second end face limiting major arc ring (4) away from the major arc clamping ring (2), and the arc-shaped guide groove (404) is distributed along the circumferential direction of the round through hole (402). The positioning hole (405) is located at the bottom of the first end of the arc-shaped guide groove (404), and in the direction from the second end of the arc-shaped guide groove (404) to the first end of the arc-shaped guide groove (404), the round rod (61) is gradually tightened.

6. The positioning device for processing a denture base according to claim 3, characterized in that: The pressing block (62) is provided with a guide hole (6201) axially distributed along the round rod (61), and the first end of the positioning rod (65) is located in the guide hole (6201); A limiting ring (63) coaxially installed in the guide hole (6201) is provided on one side of the positioning rod (65) away from the positioning hole (405); A pull rod (64) connected to the positioning rod (65) is provided inside the limiting ring (63); An elastic member (67) is connected between the limiting ring (63) and the positioning rod (65).

7. The positioning device for processing a denture base according to claim 6, wherein: Magnetic members (66) are provided at opposite ends of the limiting ring (63) and the positioning rod (65), and the two magnetic members (66) repel each other.

8. The positioning device for processing a denture base according to claim 6, wherein: The superior arc clamping ring (2) is provided with a temporary limiting hole (202) inside the long through hole (403). When the pressing block (62) is located inside the long through hole (403), the second end of the positioning rod (65) is used to insert into the temporary limiting hole (202).

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