A positioning fixture for a ceramic shaft on a lathe

Abstract

This application discloses a lathe positioning fixture for ceramic shaft parts, relating to the field of shaft part positioning technology. The key technical point is that the lathe positioning fixture for ceramic shaft parts includes a base, an operating table above the base, a first mounting plate and a second mounting plate at both ends of the operating table, a chuck on the first mounting plate, and a positioning shaft on the second mounting plate, with a center at the end of the positioning shaft furthest from the second mounting plate. A baffle is provided in the middle of the operating table, and a clearance groove is formed on the baffle. The clearance groove fits snugly against the ceramic shaft part, so that when the ceramic shaft part is subjected to force by the lathe tool, the inner wall of the clearance groove provides a corresponding reverse force, thereby balancing the force on the ceramic shaft part, reducing the likelihood of breakage, and improving the low yield rate of ceramic shaft parts.

Description

Technical Field

[0001] This application relates to the field of positioning technology for shaft parts, and in particular to a positioning fixture for a ceramic shaft part on a lathe. Background Technology

[0002] Ceramic shafts are shaft-shaped mechanical components made from high-performance ceramic materials through specific processes. They play a key role in various high-precision and high-requirement equipment and mechanical systems, and are widely used in aerospace, medical, electronics, industrial manufacturing and many other fields.

[0003] The existing positioning fixture for ceramic shaft parts on a lathe includes a base, an operating table on top of the base, a first mounting plate and a second mounting plate at both ends of the operating table, a chuck on the inner wall of the first mounting plate and a center on the inner wall of the second mounting plate; when it is necessary to position the ceramic shaft part, the ceramic shaft part is placed in the chuck and the other end is held in place by the center to achieve positioning.

[0004] Regarding the aforementioned technologies, the inventors believe that when ceramic shaft parts need to be processed, the downward turning of the cutting tool will exert downward force on the ceramic shaft parts, which makes them prone to breakage, resulting in a low yield. Utility Model Content

[0005] The purpose of this application is to provide a positioning fixture for a lathe for ceramic shaft parts, so as to improve the problem of low yield of ceramic shaft parts.

[0006] The positioning fixture for a lathe provided in this application for ceramic shaft parts adopts the following technical solution:

[0007] A positioning fixture for a ceramic shaft on a lathe includes a base, an operating table on top of the base, a first mounting plate and a second mounting plate at both ends of the operating table, a chuck on the first mounting plate and a positioning shaft on the second mounting plate, with a center point at the end of the positioning shaft away from the second mounting plate; a baffle is provided in the middle of the operating table, and a clearance groove is formed on the baffle, which fits against the ceramic shaft.

[0008] By adopting the above technical solution, when it is necessary to process ceramic shaft parts on the operating table, the ceramic shaft parts are placed in the chuck on the first mounting plate. The positioning shaft on the second mounting plate and the center on the positioning shaft hold the workpiece in place. The baffle on the operating table can fix the ceramic shaft parts in place. The clearance groove on the baffle can better fit the side wall of the ceramic shaft parts, so that when the turning tool applies force, the inner side wall of the clearance groove provides a corresponding reverse force, so that the ceramic shaft parts are subjected to balanced force, reducing the ceramic shaft parts from being easily broken, thereby improving the problem of low yield of ceramic shaft parts.

[0009] Optionally, a plurality of balls are embedded in the inner wall of the relief groove.

[0010] By adopting the above technical solution, the ball bearings abut against the ceramic shaft workpiece, changing sliding friction to rolling friction and reducing frictional force.

[0011] Optionally, the bottom of the second mounting plate is provided with a sliding groove along the length of the operating table, the bottom of the second mounting plate is slidably connected to the inner side wall of the sliding groove, and a fixing block is fixedly provided on the side wall of the second mounting plate, the fixing block being provided with a first bolt that abuts against the operating table to fix the second mounting plate.

[0012] By adopting the above technical solution, the slide can be used to adjust the position of the second mounting plate when the length of the ceramic shaft is long or short, and the first bolt can be used to fix the position of the fixing block on the second mounting plate.

[0013] Optionally, a guide rail is provided above the operating table, and a slider is provided above the guide rail along the length of the operating table, the slider being fixedly connected to a baffle.

[0014] By adopting the above technical solution, the baffle can be adjusted by connecting the slider to slide on the guide rail according to the processing position of the ceramic shaft part.

[0015] Optionally, the guide rail is provided with limiting plates at both ends that can abut against the slider.

[0016] By adopting the above technical solution, the limiting plate can be used to fix the slider when it reaches the critical point of the guide rail, preventing the slider from slipping off the guide rail.

[0017] Optionally, the upper surface of the guide rail is provided with a plurality of limiting holes, and a limiting rod for fixing the slider is inserted into the inner wall of the limiting hole.

[0018] By adopting the above technical solution, when the ceramic shaft parts on the baffle need to be processed, the limiting rod can be inserted into the limiting hole to fix the slider on the guide rail.

[0019] Optionally, a rod is inserted into the inner wall of the positioning shaft near one end of the second mounting plate. The rod passes through the second mounting plate, and a second bolt is provided on the outer wall of the second mounting plate. The second bolt is fixedly connected to the rod.

[0020] By adopting the above technical solution, the insertion rod can be used to fix the positioning shaft and the second mounting plate, and the second bolt can fix the insertion rod in the inner wall of the second mounting plate; when the machining of ceramic shaft parts results in one end having a small shaft diameter and the other end having a large shaft diameter, the positioning shaft can be disassembled and replaced.

[0021] Optionally, the baffle includes a second baffle fixedly connected to the slider, and a first baffle slidably disposed opposite to the second baffle. The second baffle has a sliding groove, and a sliding rod is slidably disposed in the sliding groove. The sliding rod is fixedly connected to the first baffle. An elastic element is disposed between the first baffle and the second baffle, and the elastic element connects the upper and lower first baffles and the second baffle.

[0022] By adopting the above technical solution, when the sliding rod slides in the sliding groove, the first baffle can slide along the baffle in the up and down direction by sliding the sliding rod in the sliding groove according to the diameter of the ceramic shaft. The elastic element can be used as a support when the sliding rod slides, and can also play a role in preventing loosening.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. A rod is inserted into the inner wall of the positioning shaft near the second mounting plate. The rod passes through the second mounting plate. A second bolt is provided on the outer wall of the second mounting plate. The second bolt is fixedly connected to the rod. The rod can be used to fix the positioning shaft and the second mounting plate. The second bolt can fix the rod in the inner wall of the second mounting plate. When the machining of ceramic shaft parts results in one end having a smaller shaft diameter and the other end having a larger shaft diameter, the positioning shaft can be disassembled and replaced.

[0025] 2. When the sliding rod slides in the sliding groove, the first baffle can slide along the up and down direction of the baffle by sliding the sliding rod in the sliding groove according to the diameter of the ceramic shaft. The elastic element can be used as a support when the sliding rod slides, and can also play a role in preventing loosening. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a lathe positioning fixture for a ceramic shaft component in this embodiment;

[0027] Figure 2 yes Figure 1 Enlarged view of section A;

[0028] Figure 3 This is a cross-sectional view of the second mounting plate.

[0029] In the diagram, 1. Base; 2. Operating table; 3. First mounting plate; 4. Second mounting plate; 5. Chuck; 7. Positioning shaft; 8. Center; 9. Slide groove; 10. Baffle; 101. First baffle; 102. Second baffle; 11. Clearance groove; 12. Ball bearing; 13. Fixing block; 14. First bolt; 15. Guide rail; 16. Slider; 17. Limiting plate; 18. Limiting hole; 19. Limiting rod; 20. Insert rod; 21. Second bolt; 22. Sliding groove; 23. Sliding rod; 24. Elastic element. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0031] A positioning fixture for a ceramic shaft on a lathe, with reference to Figure 1 The device includes a base 1, with an operating platform 2 welded on top. A first mounting plate 3 and a second mounting plate 4 are respectively installed at both ends of the operating platform 2. A chuck 5, which is a three-jaw chuck, is fixedly installed on the inner wall of the first mounting plate 3 by screws. A positioning shaft 7 is installed on the second mounting plate 4. A center point 8 is installed on the end of the positioning shaft 7 away from the second mounting plate 4 through a bearing. A baffle 10 is welded to the middle of the operating platform 2. A clearance groove 11 is opened on the baffle 10, which fits against the ceramic shaft.

[0032] Reference Figure 1 and Figure 2 The inner wall of the recess 11 is provided with several balls 12 by means of embedding. The bottom of the second mounting plate 4 is slidably connected along the inner wall of the operating table 2 by a slider (not shown in the figure). A fixing block 13 is fixedly provided on the side wall of the second mounting plate 4. A first bolt 14 is provided above the fixing block 13 to abut against the operating table 2 to fix the second mounting plate 4.

[0033] Reference Figure 1 A guide rail 15 is welded above the operating table 2. A slider 16 is slidably mounted above the guide rail 15 along the direction of the operating table 2. A baffle 10 is welded onto the slider 16. Limiting plates 17 are fixed at both ends of the guide rail 15 with screws. The limiting plates 17 abut against the guide rail 15 along the length of the operating table 2. Several limiting holes 18 are opened on the upper surface of the guide rail 15. Limiting rods 19 are installed on the inner side wall of the limiting holes 18 by insertion. When the slider 16 is in contact with the limiting plate 17, it is fixed with a limiting rod 19. When the slider 16 is located between the two limiting plates 17 and is not in contact with the limiting plates 17, it is fixed with a limiting rod 19 on each side.

[0034] Reference Figure 1 and Figure 3A rod 20 is fixedly installed at one end of the positioning shaft 7 near the second mounting plate 4. The rod 20 passes through the second mounting plate 4 and is fixedly connected to the outer wall of the second mounting plate 4 by bolts 21. The bolts 21 are fixedly connected to the rod 20. The baffle 10 includes a second baffle 102 fixedly connected to the slider and a first baffle 101 opposite to the second baffle 102. The second baffle 102 has a sliding groove 22. A sliding rod 23 is slidably installed in the sliding groove 22. The sliding rod 23 is fixedly connected to the first baffle 101. An elastic element 24 is welded between the first baffle 101 and the second baffle 102. The elastic element 24 is a spring that connects the first baffle 101 and the second baffle 102 on the upper and lower sides.

[0035] The implementation principle of this application embodiment is as follows: When it is necessary to process the ceramic shaft on the operating table 2, the ceramic shaft is placed in the chuck 5 on the first mounting plate 3, and the top tip 8 of the positioning shaft 7 on the second mounting plate 4 fixes the ceramic shaft. The sliding groove 9 at the bottom of the second mounting plate 4 can be adjusted according to the diameter of the ceramic shaft being processed. The slide rail on the operating table 2 can make the baffle 10 on the slider 16 slide along the operating table 2, thereby changing according to the position of the ceramic shaft. In addition, the sliding rod 23 between the first baffle 101 and the second baffle 102 can slide along the up and down direction of the baffle 10 in the sliding groove 22. The clearance groove 11 on the first baffle 101 can better fit the side wall of the ceramic shaft, so that when the ceramic shaft is subjected to force by the cutting tool, the inner side wall of the clearance groove provides a corresponding reverse force, so that the ceramic shaft is subjected to balanced force, reducing the ceramic shaft from being easily broken, thereby improving the problem of low yield of ceramic shafts.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lathe positioning tool for ceramic shafts, comprising a base (1), characterized in that: An operating table (2) is provided above the base (1). A first mounting plate (3) and a second mounting plate (4) are respectively provided at both ends of the operating table (2). A chuck (5) is provided on the first mounting plate (3), and a positioning shaft (7) is provided on the second mounting plate (4). A center point (8) is provided at the end of the positioning shaft (7) away from the second mounting plate (4). A baffle (10) is provided in the middle of the operating table (2). A clearance groove (11) is provided on the baffle (10), and the clearance groove (11) fits against the ceramic shaft. The inner wall of the relief groove (11) is embedded with a number of balls (12); The baffle (10) includes a second baffle (102) fixedly connected to the slider (16) and a first baffle (101) disposed opposite to the second baffle (102). The second baffle (102) has a sliding groove (22). A sliding rod (23) is slidably disposed in the sliding groove (22). The sliding rod (23) is fixedly connected to the first baffle (101). An elastic element (24) is disposed between the first baffle (101) and the second baffle (102). The elastic element (24) connects the first baffle (101) and the second baffle (102) on the upper and lower sides.

2. The positioning tool for lathe machining of a ceramic shaft according to claim 1, wherein: The bottom of the second mounting plate (4) is provided with a slide groove (9) along the length of the operating table (2). The bottom of the second mounting plate (4) is slidably connected to the inner side wall of the slide groove (9). A fixing block (13) is fixedly provided on the side wall of the second mounting plate (4). The fixing block (13) is provided with a first bolt (14) that abuts against the operating table (2) to fix the second mounting plate (4).

3. The positioning tool for turning ceramic shafts according to claim 1, characterized in that: A guide rail (15) is provided above the operating table (2), and a slider (16) is provided above the guide rail (15) along the length of the operating table (2). The slider (16) is fixedly connected to the baffle (10).

4. The positioning tool for ceramic shafts according to claim 3, characterized in that: The guide rail (15) is provided with limiting plates (17) at both ends that can abut against the slider (16).

5. The positioning tool for turning ceramic shafts according to claim 4, characterized in that: The upper surface of the guide rail (15) is provided with several limiting holes (18), and the inner sidewall of the limiting holes (18) is provided with a limiting rod (19) for fixing the slider (16).

6. The positioning tool for lathe machining of a ceramic shaft member according to claim 1, wherein: The positioning shaft (7) has a rod (20) inserted into the inner wall near the end of the second mounting plate (4). The rod (20) passes through the second mounting plate (4). A second bolt (21) is provided on the outer wall of the second mounting plate (4). The second bolt (21) is fixedly connected to the rod (20).

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