Composite clamp for false tooth engraving and milling machine

Abstract

The utility model discloses a composite fixture for a false tooth engraving and milling machine. The composite fixture comprises a U-shaped fixture body, an arc-shaped baffle and a linear fixture body, the inner circumferential surface of the U-shaped clamp body is arc-shaped, and an arc-shaped step is arranged on the inner circumferential surface; an arc-shaped mounting groove is formed in the front face of the U-shaped clamp body and extends to the edge of the arc-shaped inner circumferential face. When the arc-shaped baffle is detachably installed in the arc-shaped installation groove of the U-shaped clamp body, the titanium disc clamp is formed. When the two sides of the rear face of the linear clamp body are detachably installed on the rear faces of the two branches of the U-shaped clamp body, the glass ceramic block and titanium column clamp is formed. Compatibility of various machining types is achieved, and the technical purposes of improving the clamp function, improving the working efficiency and relieving the burden of workers are achieved.

Description

Technical Field

[0001] This utility model relates to the field of dental processing equipment technology, specifically to a multifunctional clamp adapted to a milling machine for fixing dental prosthesis processing materials such as glass ceramic blocks, titanium pillars, and titanium discs. Background Technology

[0002] In the field of dental prosthesis manufacturing, milling machines, as core equipment, are widely used for the precision machining of materials such as titanium discs, titanium pillars, and glass-ceramic blocks. To ensure machining accuracy and efficiency, fixtures play a crucial role in the milling process. Currently, fixtures on the market are mainly designed for single materials, such as titanium disc fixtures, glass-ceramic block fixtures, and titanium pillar fixtures. However, these single-function fixtures have the following shortcomings:

[0003] 1. Limited Functionality: Existing fixtures are typically only suitable for machining specific materials. For example, a titanium disc fixture cannot be used for machining glass-ceramic blocks or titanium pillars. This limitation necessitates frequent fixture changes during machining, increasing operational complexity and time costs.

[0004] 2. Insufficient clamping force: The clamping force design of the existing fixture is not optimized enough. A large force needs to be applied during operation, which not only increases the labor intensity of the workers, but may also cause the material to loosen during the processing, affecting the processing accuracy.

[0005] 3. Lack of user-friendliness in design: The existing fixtures have a relatively simple shape design, lack human-centered considerations, and have a poor operating experience, making it difficult to meet the needs of modern dental processing equipment for high efficiency and convenience.

[0006] To solve the above problems, it is urgent to develop a multi-functional fixture that is compatible with CNC engraving and milling machines, which can simultaneously meet the processing needs of different materials such as glass ceramic blocks, titanium pillars and titanium discs, and has the characteristics of easy operation, stable clamping force and user-friendly design. Summary of the Invention

[0007] In view of the above-mentioned existing technical problems, this utility model aims to provide a composite fixture for a dental prosthesis milling machine to improve the efficiency and quality of dental processing, reduce the labor intensity of workers, and meet diverse processing needs.

[0008] To achieve the above objectives, this utility model provides a composite fixture for a dental prosthesis engraving and milling machine, comprising a U-shaped fixture body, an arc-shaped baffle, and a straight fixture body;

[0009] The inner circumferential surface of the U-shaped clamp is arc-shaped, and an arc-shaped step is provided on the inner circumferential surface; an arc-shaped mounting groove is provided on the front of the U-shaped clamp, and the arc-shaped mounting groove extends to the edge of the inner circumferential surface;

[0010] The top surface of the straight clamp has several alternating titanium pillar fixing holes and glass-ceramic block fixing holes, and each glass-ceramic block fixing hole is provided with a corresponding glass-ceramic block positioning pin; the front of the straight clamp has several glass-ceramic block screw holes, each glass-ceramic block screw hole is interconnected with the corresponding glass-ceramic block fixing hole; the bottom surface of the straight clamp has several titanium pillar screw holes, each titanium pillar screw hole is interconnected with the corresponding titanium pillar fixing hole.

[0011] When the arc-shaped baffle is detachably installed in the arc-shaped mounting groove of the U-shaped clamp body, a titanium disc clamp is formed; when the rear two sides of the straight clamp body are detachably installed behind the two branches of the U-shaped clamp body, a glass ceramic block and titanium column clamp is formed.

[0012] Furthermore, the present invention provides that the arc-shaped mounting groove has a plurality of mounting groove screw holes; the arc-shaped baffle has a plurality of arc-shaped baffle screw holes, and each arc-shaped baffle screw hole is adapted to the position of the corresponding mounting groove screw hole.

[0013] Furthermore, the arc-shaped step and arc-shaped baffle are adapted to the titanium disc.

[0014] Furthermore, in this utility model, the rear of the two branches of the U-shaped clamp are respectively provided with expansion slots, each expansion slot extending to the inner peripheral edge of the arc-shaped step, and having expansion slot pin holes and expansion slot screw holes inside.

[0015] The straight clamp has mounting ears on both sides of its rear. Each mounting ear has a mounting ear pin hole and a mounting ear screw hole. Each mounting ear pin hole is adapted to the position of the corresponding expansion slot pin hole, and each mounting ear screw hole is adapted to the position of the corresponding expansion slot screw hole.

[0016] Furthermore, in this invention, the positioning pin of the glass-ceramic block is adapted to the positioning groove of the glass-ceramic block; the fixing hole of the glass-ceramic block is adapted to the tail shank of the glass-ceramic block; and the junction of the screw hole and the fixing hole of the glass-ceramic block is adapted to the screw fixing groove of the glass-ceramic block.

[0017] Furthermore, the titanium column fixing hole is adapted to the titanium column fixing post; at the same time, the titanium column screw hole is adapted to the titanium column fixing post screw hole.

[0018] Furthermore, the front of the straight clamp is provided with a glass-ceramic block identification number corresponding to the glass-ceramic block fixing hole, and a titanium column identification number corresponding to the titanium column fixing hole.

[0019] Furthermore, in this invention, one branch of the U-shaped clamp body has a centrally located support shaft mounting hole on its outer side, and a plurality of bearing seat mounting holes distributed around the support shaft mounting hole; the other branch of the U-shaped clamp body is connected to a mounting base, and the mounting base has a centrally located positioning pin positioning hole on its end face, and a plurality of screw clearance holes distributed around the positioning pin positioning hole.

[0020] As can be seen from the above technical solution, this utility model provides a multi-functional fixture adapted to a CNC engraving and milling machine. Through innovative design and structural optimization, it solves the problems of existing fixtures such as single function, insufficient clamping force, and lack of user-friendliness, significantly improving the efficiency and precision of denture processing. Specific beneficial effects are as follows:

[0021] (A) Comprehensive Expansion of Processing Types and Wide Applicability: Through optimized structural design, the system achieves compatibility with multiple processing types, making it widely applicable to the processing of various denture materials and complex shapes, such as glass-ceramic blocks, titanium pillars, and titanium discs. This design significantly increases the scope of application, providing strong support for the diversified development of the denture processing industry, enhancing market competitiveness, and meeting the diverse needs of different users.

[0022] (B) Innovative multi-dimensional space processing design: This utility model innovatively adopts a multi-dimensional space processing design in terms of processing layout. This ingenious layout effectively avoids interference problems that may occur during processing and subsequent installation, and greatly improves the smoothness of processing and the adaptability of finished products.

[0023] (C) Added fixture labeling function to meet personalized processing needs: Users can flexibly plan the processing sequence using fixture labels according to their unique processing procedures and requirements, achieving personalized customization. This function greatly improves the autonomy and efficiency of production, making denture processing more in line with actual needs and enhancing customer satisfaction. At the same time, the labeling function also simplifies the operation process, reduces the difficulty of operation, and alleviates the workload of staff.

[0024] (D) Open design enhances ease of use: The fixture features an open design, a clever concept that makes loading and unloading workpieces easy and convenient. Operators can quickly place or remove workpieces from the fixture without complicated procedures, significantly improving ease of use.

[0025] In summary, this utility model achieves comprehensive optimization of function and design through processing type expansion, multi-dimensional space processing design, fixture marking function, and open design, significantly improving the efficiency and precision of denture processing, meeting the medical industry's demand for high-quality dentures, and has broad application prospects and market value. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the structure of an existing glass-ceramic block;

[0027] Figure 2 This is a schematic diagram of an existing titanium pillar.

[0028] Figure 3 This is a schematic diagram of the structure of an existing titanium disk;

[0029] Figure 4 This is a schematic diagram of the structure of the U-shaped clamp and the arc-shaped baffle after assembly in this utility model;

[0030] Figure 5 This is a schematic diagram of the front structure of the U-shaped clamp in this utility model;

[0031] Figure 6 This is a schematic diagram of the structure behind the U-shaped clamp in this utility model;

[0032] Figure 7 This is a schematic diagram of the side of the U-shaped clamp in this utility model;

[0033] Figure 8 This is a schematic diagram of the arc-shaped baffle in this utility model;

[0034] Figure 9 This is a schematic diagram showing the operation of the U-shaped clamp and the arc-shaped baffle in this utility model for installing the titanium disk;

[0035] Figure 10 This is a schematic diagram of the front structure of the U-shaped clamp and the straight clamp after assembly in this utility model;

[0036] Figure 11 This is a schematic diagram of the structure after the U-shaped clamp and the straight clamp are assembled in this utility model;

[0037] Figure 12 This is a schematic diagram of the specific structure of the straight clip in this utility model;

[0038] Figure 13 This is a schematic diagram of the top surface of the straight clamp in this utility model;

[0039] Figure 14 This is a schematic diagram of the bottom surface of the straight clamp in this utility model;

[0040] Figure 15 This is a schematic diagram showing the installation of glass-ceramic blocks in the U-shaped clamp and the straight clamp of this utility model.

[0041] Figure 16 This is a schematic diagram showing the installation of titanium pillars in the U-shaped clamp and the straight clamp of this utility model;

[0042] Figure 17This is a schematic diagram of the installation of the U-shaped clamp in this utility model on an existing engraving and milling machine workbench;

[0043] Figure 18 This is a schematic diagram showing the installation of the U-shaped clamp in this utility model with the positioning seat, reducer and machine tool motor in an existing engraving and milling machine;

[0044] In the diagram: 1. Glass-ceramic block; 11. Glass-ceramic block cutting post; 12. Positioning groove; 13. Tail shank; 14. Screw fixing groove; 2. Titanium post; 21. Titanium post cutting post; 22. Fixing post; 23. Fixing post screw hole; 3. Titanium disc; 31. Fixing end; 32. Machining end; 4. U-shaped clamp body; 41. Mounting base; 411. Screw clearance hole; 412. Positioning pin positioning hole; 42. Arc-shaped step; 43. Arc-shaped mounting groove; 431. Mounting groove screw hole; 44. Expansion groove; 441. Expansion groove pin hole; 442. Expansion groove screw hole; 45. Support. 46. ​​Shaft mounting hole; 5. Bearing housing mounting hole; 6. Arc-shaped baffle; 7. Baffle screw hole; 8. Slotted clamp body; 9. Glass ceramic block fixing hole; 10. Glass ceramic block positioning pin; 11. Glass ceramic block screw hole; 12. Glass ceramic block identification number; 13. Titanium pillar fixing hole; 14. Titanium pillar screw hole; 15. Titanium pillar identification number; 16. Mounting ear; 17. Mounting ear pin hole; 18. Mounting ear screw hole; 19. Worktable; 20. Rotary arm; 21. Support shaft; 22. Bearing housing; 23. Positioning seat; 24. Reducer; 25. Machine tool motor. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0046] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical, and operation may be made without departing from the spirit and scope of this disclosure. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the published patents. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application. Spatially related terms, such as “upper,” “lower,” “left,” “right,” “front,” “rear,” “middle,” “both sides,” etc., may be used herein to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0047] like Figure 1 As shown, the glass-ceramic block 1 includes a glass-ceramic block cutting post 11 and a tail shank 13, with the tail shank 13 mounted below the glass-ceramic block cutting post 11. The top side of the tail shank 13 has a positioning groove 12 for engaging with a glass-ceramic block positioning pin 32. Furthermore, a ring of screw-fixing grooves 14 is formed on the middle side of the tail shank 13 for engaging with glass-ceramic block fixing screws. This glass-ceramic block 1 is a market standard product, a workpiece to be processed, and is available in various sizes and models.

[0048] like Figure 2 As shown, the titanium pillar 2 includes a titanium pillar cutting pillar 21 and a fixing pillar 22, with the fixing pillar 22 installed below the titanium pillar cutting pillar 21. The end face of the fixing pillar 22 serves as a fixing reference surface, and a fixing pillar screw hole 23 is formed along its central axis for mating with a titanium pillar fixing screw. This titanium pillar 2 is also a market standard product, belonging to the category of work-in-process, and is available in various sizes and models.

[0049] like Figure 3 As shown, the titanium disc 3 has a fixed end 31 at one end and a machined end 32 at the other. The diameter of the titanium disc 3 is generally 98mm, but it can be configured with different thicknesses. The thickness of the fixed end 31 remains constant and can be set to 10mm, while the thicknesses on both sides of the machined end 32 are variable. This titanium disc 3 is also a market standard product, belonging to the category of parts to be processed, and is available in various sizes and models.

[0050] like Figure 4 , Figure 9 , Figure 10 As shown, this utility model provides a composite fixture for a dental prosthesis engraving and milling machine, including a U-shaped fixture body 4, a detachable arc-shaped baffle 5 installed in front of it, and a straight fixture body 6 detachably installed behind it. It is worth noting that this composite fixture has two assembly methods: the U-shaped fixture body 4 and the arc-shaped baffle 5 are combined to form a titanium disc 3 fixture, used for machining the titanium disc 3, such as... Figure 9As shown; the U-shaped clamping body 4 and the straight clamping body 6 are combined to form a clamp for the glass-ceramic block 1 and the titanium pillar 2, used for the processing of the glass-ceramic block 1 and the titanium pillar 2, as shown. Figure 15 , Figure 16 As shown. This modular design enables compatibility with multiple processing types and is widely applicable to the processing of various denture materials and complex shapes. The following is a detailed introduction.

[0051] Example 1: Composition and function of titanium disk 3 clamp.

[0052] like Figure 4 As shown, the first assembly method of the composite clamp of this utility model, namely the titanium disk 3 clamp, consists of a U-shaped clamp body 4 and a detachable arc-shaped baffle 5 installed in front of it, and the specific structure is as follows.

[0053] like Figure 5 As shown, the inner circumferential surface of the U-shaped clamp 4 is arc-shaped, and an arc-shaped step 42 is provided on the inner circumferential surface to block the back of the titanium disk 3. In addition, an arc-shaped mounting groove 43 is provided on the front of the U-shaped clamp 4, which extends to the edge of the inner circumferential surface of the U-shaped clamp 4 for mounting an arc-shaped baffle 5 to block the front of the titanium disk 3.

[0054] like Figure 6 As shown, the arc-shaped baffle 5 is detachably installed in the arc-shaped mounting groove 43, forming a stable clamping structure together with the U-shaped clamping body 4, ensuring that the titanium disk 3 remains stable during processing.

[0055] In this way, the contact surface between the fixture and the workpiece is specially designed to significantly increase the contact area, thereby generating a stronger clamping force and ensuring that the workpiece remains stable and without displacement during processing. This feature directly improves processing accuracy, resulting in high-quality denture products with minimal errors.

[0056] In some embodiments, such as Figure 4 , Figure 5 , Figure 8 As shown, the arc-shaped mounting groove 43 has a plurality of mounting groove screw holes 431; the arc-shaped baffle 5 has a plurality of arc-shaped baffle screw holes 51, each arc-shaped baffle screw hole 51 being adapted to the position of the corresponding mounting groove screw hole 431, for installing the arc-shaped baffle 5 in the arc-shaped mounting groove 43.

[0057] In specific implementation, such as Figure 4As shown, the arc-shaped baffle 5 is placed in the arc-shaped mounting groove 43 of the U-shaped clamping body 4, and the arc-shaped baffle 5 and the mounting groove screw hole 431 are passed through the screw hole 51 of the arc-shaped baffle and the screw hole 431 of the mounting groove, so that the arc-shaped baffle 5 and the U-shaped clamping body 4 can be firmly connected as one unit. In the workpiece clamping process, this design can achieve fast and precise operation with its carefully designed structure, which significantly improves the processing efficiency.

[0058] In some embodiments, such as Figure 5 As shown, the arc-shaped step 42 and the arc-shaped baffle 5 can be adapted to the titanium disk 3. Specifically, the inner peripheral edge of the arc-shaped baffle 5 extends beyond the inner peripheral edge of the U-shaped clamping body 4, thereby forming an arc-shaped groove together with the arc-shaped step 42, which is used to securely hold the arc-shaped edge of the fixed end 31 of the titanium disk 3.

[0059] In practical implementation, the dimensions of the U-shaped fixture 4 can be set as follows: the thickness of the arc-shaped baffle 5 is set to 20mm, the thickness of the arc-shaped step 42 is set to 10mm, and the diameter of the inner circumference of the U-shaped fixture 4 is set to 98.2mm. This design is not only suitable for processing titanium discs 3 with a fixed end 31 thickness of 10mm and a diameter of 98mm, but also facilitates the loading and unloading of titanium discs 3. In addition, the U-shaped fixture 4 can also be compatible with processing titanium discs 3 of different thicknesses with a diameter of 98mm, further expanding the function of the fixture and meeting the processing needs of more types of titanium teeth.

[0060] As can be seen from the above, one embodiment of this utility model is as follows: The U-shaped clamping body 4 and the arc-shaped baffle 5 are assembled together to form a titanium disc 3 clamp for processing the titanium disc 3. This design not only simplifies the loading and unloading process of the titanium disc 3, but also allows for the processing of more types of titanium teeth, further enhancing the functionality and practicality of this utility model. Furthermore, this titanium disc 3 clamp has the following functional advantages:

[0061] A. Quick clamping and precise positioning: Through the combined design of the arc-shaped mounting groove 43 and the arc-shaped baffle 5, the titanium disk 3 can be quickly clamped and precisely positioned, which significantly improves the processing efficiency.

[0062] B. Multifunctional compatibility: The U-shaped clamp body 4 can be adapted to titanium discs 3 of different thicknesses, which expands the applicability of the clamp and meets diverse processing needs.

[0063] C. High stability and high precision: The increased contact surface and stronger clamping force ensure the stability of the workpiece during processing, directly improving processing accuracy and product quality.

[0064] D. Easy to operate: The modular design makes the assembly and disassembly of the fixture more convenient, reduces the difficulty of operation, and improves work efficiency.

[0065] Example 2: Composition and function of the clamp for glass-ceramic block 1 and titanium column 2.

[0066] like Figure 10 , Figure 15 , Figure 16 As shown, the second assembly method of the composite clamp of this utility model, namely the clamp for the glass-ceramic block 1 and the titanium pillar 2, consists of a U-shaped clamp body 4 and a detachable straight clamp body 6 installed behind it. Furthermore, the straight clamp body 6 is located on the rotation axis of the U-shaped clamp body 4, and its specific structure is described below.

[0067] like Figures 12-14 As shown, the top surface of the straight clamp 6 has alternating titanium pillar fixing holes 65 and glass-ceramic block fixing holes 61. Each glass-ceramic block fixing hole 61 is accompanied by a corresponding glass-ceramic block positioning pin 62 for precise positioning. Furthermore, the front of the straight clamp 6 has several glass-ceramic block screw holes 63, each communicating with its corresponding glass-ceramic block fixing hole 61. The bottom surface of the straight clamp 6 has several titanium pillar screw holes 66, each communicating with its corresponding titanium pillar fixing hole 65. The rear sides of the straight clamp 6 are detachably mounted on the rear of the two branches of the U-shaped clamp 4 to ensure the stability of the overall structure.

[0068] Furthermore, the adaptation mechanism between the glass-ceramic block 1 and the titanium pillar 2 fixture and the workpiece is as follows:

[0069] (1) Adaptation of glass ceramic block 1: the positioning pin 62 of glass ceramic block is adapted to the positioning groove 12 of glass ceramic block 1; the fixing hole 61 of glass ceramic block is adapted to the tail shank 13 of glass ceramic block 1; the connection between the screw hole 63 of glass ceramic block and the fixing hole 61 of glass ceramic block is adapted to the screw fixing groove 14 of glass ceramic block 1.

[0070] (2) Fitting of titanium column 2: The fixing hole 65 of titanium column is fitted with the fixing column 22 of titanium column 2; the screw hole 66 of titanium column is fitted with the screw hole 23 of fixing column of titanium column 2.

[0071] By optimizing the positioning mechanism, the fixture significantly reduces the alignment time and cumbersome adjustment procedures when changing workpieces, greatly improving processing efficiency. Furthermore, the top surface of the straight fixture body 6 can simultaneously process the glass-ceramic block 1 and the titanium pillar 2, further enhancing processing efficiency and providing higher speed and precision for the production process.

[0072] In practice, the installation steps for the glass-ceramic block 1 and titanium pillar 2 clamps with the workpiece are as follows:

[0073] (a) Machining of glass-ceramic block 1: First, firmly fix the straight-line clamp 6 and the U-shaped clamp 4. Then, guided by the glass-ceramic block positioning pin 62, slowly and precisely insert the tail shank 13 of the glass-ceramic block 1 into the glass-ceramic block fixing hole 61 until the tail shank 13 is completely in contact with the clamp plane, achieving precise positioning. Next, insert the fixing screw into the screw hole 63 of the glass-ceramic block and gradually tighten it using the appropriate tool, so that the glass-ceramic block 1 is firmly fixed in the straight-line clamp 6, effectively preventing displacement deviation during machining and ensuring machining accuracy.

[0074] (b) Machining of the titanium column 2: First, firmly fix the straight-line fixture 6 and the U-shaped fixture 4. Then, smoothly insert the fixing post 22 end of the titanium column 2 into the titanium column fixing hole 65 until the titanium column 2 is in close contact with the fixture plane, completing the initial positioning. Next, insert the fixing screw into the titanium column screw hole 66 and screw it into the fixing post screw hole 23 of the titanium column 2, so that the titanium column 2 is firmly fixed in the straight-line fixture 6, providing a solid guarantee for subsequent efficient and precise machining operations.

[0075] In some embodiments, the top surface of the straight clamp 6 is alternately provided with three glass-ceramic block fixing holes 61 and two titanium post fixing holes 65, and a corresponding glass-ceramic block positioning pin 62 is installed next to each glass-ceramic block fixing hole 61. This design not only meets the processing needs of various styles of dentures, including common standard styles and uniquely shaped custom styles, but also demonstrates strong versatility and compatibility, providing a new and efficient solution for the denture processing industry.

[0076] In practical implementation, the specific settings for processing glass-ceramic block 1 are as follows:

[0077] 1) Set the diameter of the three glass ceramic block positioning pins 62 to Φ1.9mm so that they can be precisely matched with the positioning grooves 12 in the glass ceramic block 1, thereby determining the fixed position of the glass ceramic block 1.

[0078] 2) Set the dimensions of the three glass-ceramic block fixing holes 61 to Φ5.9×13mm. Since the tail shank 13 of the glass-ceramic block 1 needs to fit the fixing holes 61, the tail shank 13 can be set to Φ5.9mm, with a length not exceeding 13mm. For example... Figure 15 As shown, since the three glass-ceramic block fixing holes 61 can simultaneously install three glass-ceramic blocks 1, and the three glass-ceramic block cutting columns 11 are placed in parallel and do not interfere with each other, the three glass-ceramic blocks 1 can be selected with different lengths. For example, a glass-ceramic block 1 with a cutting column length of no more than 20mm and a tailstock 13 diameter of 5.9mm and a length of no more than 13mm can be selected, thereby achieving compatibility with multiple processing types, significantly improving work efficiency, and saving costs for users.

[0079] 3) Set the distance between two adjacent glass-ceramic blocks 1 to 25mm to leave enough space for processing and ensure smooth operation.

[0080] In practical implementation, the specific settings for processing titanium pillar 2 are as follows:

[0081] a) Set the titanium column fixing hole 65 as a special-shaped hole with a diameter of 7.95 mm and a depth of 7 mm, and set the titanium column screw hole 66 as a circular through hole with a diameter of 5.2 mm.

[0082] b) The spacing between the two glass-ceramic blocks 1 and a titanium pillar 2 is precisely planned. This ingenious layout effectively avoids interference problems that may occur during processing and subsequent installation, greatly improving the smoothness of processing and the adaptability of the finished product, ensuring that each denture component can be precisely processed and perfectly assembled.

[0083] In this way, the main structure of the straight clamp 6 provides a solid guarantee for high-precision machining, significantly improving the quality and precision of denture machining.

[0084] like Figure 10 , Figure 12 As shown, in some embodiments, in order to facilitate the distinction of the processing sequence, the front of the straight clamp 6 is provided with a glass ceramic block identification number 64 corresponding to the glass ceramic block fixing hole 61, and a titanium column identification number 67 corresponding to the titanium column fixing hole 65.

[0085] In practice, the glass-ceramic block identifier 64 can be set to numbers such as 1, 2, 3, etc., and the titanium column identifier 67 can be set to T1, T2, etc. Users can flexibly plan the processing sequence using these identifiers according to their own processing flow and requirements, and install the glass-ceramic block 1 and titanium column 2 with the required identifiers, thereby achieving personalized customized processing.

[0086] In some implementations, such as Figure 6 As shown, expansion slots 44 are respectively provided on the rear of the two branches of the U-shaped clamp body 4. Each expansion slot 44 extends to the inner peripheral edge of the arc-shaped step 42, and has an expansion slot pin hole 441 and two expansion slot screw holes 442 for installing the mounting ears 68 of the straight clamp body 6.

[0087] like Figure 12 As shown, the straight clamp body 6 has outwardly protruding mounting ears 68 connected to both sides of its rear. Each mounting ear 68 has one mounting ear pin hole 681 and two mounting ear screw holes 682. Each mounting ear pin hole 681 is adapted to the corresponding expansion slot pin hole 441, and each mounting ear screw hole 682 is adapted to the corresponding expansion slot screw hole 442.

[0088] In practical implementation, the two mounting ears 68 on the back of the straight clamp 6 are placed in the corresponding expansion slots 44. First, pins are passed through the mounting ear pin holes 681 and the corresponding expansion slot pin holes 441 to achieve precise positioning of the straight clamp 6. Then, screws are passed through the mounting ear screw holes 682 and the corresponding expansion slot screw holes 442 to secure the straight clamp 6. With this design, the mounting ears 68 on both sides of the straight clamp 6 are fixed to the back of the two branches of the U-shaped clamp 4, thus forming the glass-ceramic block 1 and titanium pillar 2 clamp. Figure 11 As shown.

[0089] Furthermore, the connection design between the straight clamp body 6 and the U-shaped clamp body 4 provides stronger structural rigidity, ensuring that it can effectively resist external impacts and deformations during processing and maintain high stability at all times.

[0090] As can be seen from the above, the second embodiment of this utility model is as follows: The U-shaped clamping body 4 and the straight clamping body 6 are assembled together to form a fixture for processing the glass-ceramic block 1 and the titanium pillar 2. This design not only optimizes the processing flow but also provides an efficient and stable solution for the dental prosthesis processing industry through its multifunctional compatibility and convenient operation. It also has the following functional advantages:

[0091] A. Personalized processing: By using the glass-ceramic block identification number 64 and the titanium column identification number 67, users can flexibly plan the processing sequence to meet personalized needs.

[0092] B. High-precision positioning: The design of the pin and screw ensures the precise positioning and stable connection of the flat clamp body 6.

[0093] C. Multifunctional compatibility: Adding titanium pillar fixing holes 65 between the glass-ceramic block fixing holes 61 expands the processing types and improves efficiency.

[0094] D. Easy to operate: The open design simplifies the workpiece loading and unloading process and improves the ease of operation.

[0095] E. Structural stability: Enhanced structural rigidity ensures high stability during processing and effectively resists external impacts.

[0096] It should be noted that in the specific 6-fold folder, such as Figure 15 As shown, all the glass-ceramic block fixing holes 61 can be used simultaneously; as Figure 16 As shown, all the titanium pillar fixing holes 65 can be used simultaneously. However, due to the different materials and processing techniques of the glass-ceramic block 1 and the titanium pillar 2, they cannot be processed at the same time. Therefore, all the titanium pillar fixing holes 65 and all the glass-ceramic block fixing holes 61 cannot be used at the same time.

[0097] While this design limits the possibility of simultaneously machining both the glass-ceramic block 1 and the titanium pillar 2, the step-by-step machining method ensures that each workpiece achieves optimal accuracy and stability during processing, thereby improving the overall machining quality. At the same time, the fixture's multi-functional compatibility still provides users with flexible operating options, enabling them to efficiently complete machining tasks for different types of workpieces according to actual needs.

[0098] Furthermore, the dental engraving and milling machine adapted to this utility model is the 8s engraving and milling machine manufactured and sold by Shenzhen Yucheng Intelligent Equipment Co., Ltd. For example... Figure 17 As shown, the worktable 7 of an existing 8s engraving and milling machine is used to fix the workpiece, and an N-shaped rotating arm 71 is installed on the worktable 7. The rotating arm 71 includes a left vertical branch, a horizontal branch, and a right vertical branch. The horizontal branch is used to connect to the wall panel of the worktable 7; a support shaft 72 is installed on the inner side of the left vertical branch, and the support shaft 72 is used to be inserted into a bearing seat 721 with a bearing.

[0099] like Figure 18 As shown, the right vertical branch includes a housing, and a positioning seat 73, a reducer 731, a machine tool motor 732, and two synchronous pulleys installed inside the housing. The input shaft of the reducer 731 is fixedly connected to one synchronous pulley with screws, and this synchronous pulley is fixedly connected to the inner wall of the housing with screws, thus indirectly fixing the reducer 731 to the housing. The output shaft of the machine tool motor 732 is fixedly connected to the other synchronous pulley, and the two synchronous pulleys are connected by a belt, thus achieving belt drive between the reducer 731 and the machine tool motor 732. The output shaft of the reducer 731 is fixedly connected to the positioning seat 73, and the positioning seat 73 is provided with a central positioning pin and screw mounting holes, facilitating the connection of the entire fixture to the output shaft of the machine tool motor 732 through the positioning seat 73. The above describes the structure of an 8s CNC engraving and milling machine in the prior art.

[0100] In some embodiments, since the structural design of the clamping body needs to ensure that the workpiece can be precisely fixed at the predetermined position of the rotating arm 71 to ensure the accuracy of processing, the U-shaped clamping body 4 is further designed as follows.

[0101] like Figure 11 As shown, a support shaft mounting hole 45 is centrally located on the outer side of one branch of the U-shaped clamp body 4, and several bearing seat mounting holes 46 are distributed around the support shaft mounting hole 45. The support shaft mounting hole 45 is used to insert the support shaft 52. The bearing seat mounting holes 46 are used to install bearing seats 721 with bearings.

[0102] like Figure 7As shown, another branch of the U-shaped clamp body 4 is connected to a mounting base 41 on its outer side. The mounting base 41 has a centrally located positioning pin positioning hole 412 and several screw clearance holes 411 distributed around the positioning pin positioning hole 412. The positioning pin positioning hole 412 is used to insert the central positioning pin of the positioning base 73, thereby achieving precise positioning of the entire clamp on the positioning base 73; the screw clearance holes 411 are used to connect the positioning base 73 with screws, thereby achieving the installation of the entire clamp on the positioning base 73.

[0103] In practice, on the one hand, the center positioning pin of the positioning seat 73 is inserted into the positioning pin positioning hole 412 of the mounting seat 41, and the mounting seat 41 is fixed to the positioning seat 73 by screws through the screw clearance hole 411 and the screw mounting hole, thereby connecting the entire fixture to the output shaft of the machine tool motor 732. On the other hand, the support shaft 72 is inserted into the support shaft mounting hole 45 of the U-shaped fixture body 4, and the bearing seat 721 is fixed to the end face of the U-shaped fixture body 4 through the bearing seat mounting hole 46, thereby connecting the entire fixture to the support shaft 72, enhancing rigidity and stability. In this way, through the fixed clamping of both ends of the U-shaped fixture body 4 by the positioning seat 73 and the support shaft 72, the entire fixture is firmly fixed on the worktable 7, ensuring stability and accuracy.

[0104] When the CNC machine tool of the dental prosthesis carving and milling machine is working, the machine tool motor 732 starts, and drives the mounting base 41 to start rotating through the reducer 731. This causes the bearing in the bearing seat 721 on the U-shaped fixture body 4 to rotate synchronously around the support shaft 72, so that the entire fixture rotates according to the control requirements, and the processing operation of the workpiece can begin.

[0105] In addition, such as Figure 16 As shown, since the straight clamping body 6 is located on the rotation axis of the U-shaped clamping body 4 and adopts a symmetrical design, the top surface (i.e. the commonly used machining surface) of the straight clamping body 6 is closer to the axis of the output shaft of the machine tool motor 732, thereby reducing the load on the machine tool motor 732, improving the machining accuracy, and extending the service life of the machine tool motor 732.

[0106] It should be noted that, in order to adapt to the structure of the 8S engraving and milling machine's worktable 7, regardless of the type of fixture used, a support shaft mounting hole 45 and a bearing seat mounting hole 46 need to be made at one end of the fixture, and a screw clearance hole 411 and a locating pin positioning hole 412 need to be made on the mounting base 41 at the other end of the fixture. Furthermore, the steps for installing the fixture on the worktable 7 are also the same.

[0107] In summary, during operation, the U-shaped clamp 4 is first fixed at both ends to the milling machine worktable 7. When processing the titanium disc 3, the arc-shaped baffle 5 is installed on the U-shaped clamp 4 to form the titanium disc 3 clamp; when processing the glass-ceramic block 1 or titanium pillar 2, the straight clamp 6 is installed on the U-shaped clamp 4 to form the glass-ceramic block 1 and titanium pillar 2 clamp; however, the U-shaped clamp 4 remains unchanged, reducing the time spent changing workpieces and making adjustments. Next, a suitable titanium disc 3 is installed in the titanium disc 3 clamp, or a suitable glass-ceramic block 1 or titanium pillar 2 is installed in the glass-ceramic block 1 and titanium pillar 2 clamp, which efficiently completes the positioning and clamping of various workpieces to be processed, after which the processing operation begins. This achieves compatibility with multiple processing types, significantly increases the processing applicability, and is widely applicable to the processing of various dental prostheses and complex shapes.

[0108] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite fixture for a dental prosthesis engraving and milling machine, characterized in that, The U-shaped clamp body, the circular-arc baffle, and the one-word-shaped clamp body are provided. The inner circumferential surface of the U-shaped clamp body is circular-arc-shaped, and a circular-arc step is arranged on the inner circumferential surface. The top surface of the one-word-shaped clamp body is alternately provided with a plurality of titanium column fixing holes and glass ceramic block fixing holes, and a glass ceramic block positioning pin is arranged beside each glass ceramic block fixing hole. When the circular-arc baffle is detachably installed in the circular-arc mounting groove of the U-shaped clamp body, a titanium disc clamp is formed.

2. The complex jig for a denture carving mill according to claim 1, wherein The circular-arc mounting groove is provided with a plurality of mounting groove screw holes.

3. The complex jig for a denture carving mill according to claim 1 or 2, characterized in that, The circular-arc step and the circular-arc baffle are matched with the titanium disc.

4. The complex type jig for the false tooth carving miller according to claim 1, wherein The rear surface of each branch of the U-shaped clamp body is provided with an expansion groove, and each expansion groove extends to the inner circumferential edge of the circular-arc step and is provided with an expansion groove pin hole and an expansion groove screw hole. Each mounting ear is provided with a mounting ear pin hole and a mounting ear screw hole, and each mounting ear pin hole is matched with the corresponding expansion groove pin hole, and each mounting ear screw hole is matched with the corresponding expansion groove screw hole.

5. The complex jig for a denture carving mill according to claim 1 or 4, wherein The glass ceramic block positioning pin is matched with the positioning groove of the glass ceramic block, the glass ceramic block fixing hole is matched with the tail handle of the glass ceramic block, and the joint of the glass ceramic block screw hole and the glass ceramic block fixing hole is matched with the screw fixing groove of the glass ceramic block.

6. The complex jig for a denture carving mill according to claim 1 or 4, wherein The titanium column fixing hole is matched with the fixing column of the titanium column, and the titanium column screw hole is matched with the fixing column screw hole of the titanium column.

7. The complex type jig for a denture carving mill according to claim 1 or 4, wherein The front surface of the one-word-shaped clamp body is provided with a glass ceramic block identification number corresponding to the glass ceramic block fixing hole and a titanium column identification number corresponding to the titanium column fixing hole.

8. The complex type jig for a denture carving mill according to claim 1 or 2 or 4, wherein The outer side of one branch of the U-shaped clamp body is provided with a support shaft mounting hole located at the center and a plurality of bearing seat mounting holes distributed around the support shaft mounting hole, and the outer side of the other branch of the U-shaped clamp body is connected with a mounting seat, and the end surface of the mounting seat is provided with a positioning pin positioning hole located at the center and a plurality of screw gap holes distributed around the positioning pin positioning hole.

Images