A tool for horizontal indexing and operation method

Abstract

The present invention provides a tool for horizontal division and an operating method, comprising a positioning core shaft, a circular level bead and a cylindrical level bubble, wherein a circular groove is provided at one end of the positioning core shaft, a cylindrical groove is provided at one end of the positioning core shaft, a magnet one is symmetrically fixedly connected to the inner wall of the circular groove, a magnet two is symmetrically fixedly connected to the inner wall of the cylindrical groove, the circular level bead is placed in the circular groove, the cylindrical level bubble is placed in the cylindrical groove, one side of the circular level bead and the cylindrical level bubble are both fixedly connected to a connecting column, a retaining groove is provided at one end of the connecting column, a groove one is provided at one end of the positioning core shaft, a limiting column is slidably connected to the inner wall of the groove one, a limiting groove is provided at one end of the limiting column, one end of the limiting column is rotatably connected to the limiting device, and a fixing bottom device is provided at the other end of the positioning core shaft. The present invention facilitates people to quickly disassemble and assemble, and reduces the difficulty of use.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control parts processing and assembly, and in particular to a tool for horizontal indexing and an operating method. Background Art

[0002] Horizontal indexing tools are used during assembly or processing of CNC machining machines and CNC automation equipment to measure the flatness of the horizontal position, thereby achieving the required accuracy for machining parts of CNC machining machines and CNC automation equipment. However, the existing horizontal indexing tools have a complex structure, and the operating steps are relatively cumbersome during the assembly of CNC machining machines and CNC automation equipment. In addition, the horizontal indexing tools are not easy to install as a whole, which increases the difficulty of use.

[0003] Therefore, it is necessary to provide a new horizontal indexing tool and operation method to solve the above technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a horizontal graduation tool and operation method which is easy to disassemble and has a wider range of applications, can realize the flatness measurement of the horizontal orientation, and is easy to disassemble.

[0005] The horizontal dividing tool provided by the present invention comprises a positioning core shaft, a circular horizontal bead and a cylindrical horizontal bubble. A circular groove is provided at one end of the positioning core shaft, a cylindrical groove is provided at one end of the positioning core shaft, a magnet one is symmetrically fixedly connected to the inner wall of the circular groove, a magnet two is symmetrically fixedly connected to the inner wall of the cylindrical groove, the circular horizontal bead is placed in the circular groove, the cylindrical horizontal bubble is placed in the cylindrical groove, one side of the circular horizontal bead and the cylindrical horizontal bubble are both fixedly connected to a connecting column, a retaining groove is provided at one end of the connecting column, a groove one is provided at one end of the positioning core shaft, the inner wall of the groove one is slidably connected to a limiting column, a limiting groove is provided at one end of the limiting column, one end of the limiting column is rotatably connected to the limiting device, and a fixing bottom device is provided at the other end of the positioning core shaft.

[0006] Preferably, the limiting device includes a connecting disk, a second groove, a spring, a slider, a top column, a block, and a groove, one end of the limiting column is rotatably connected to the connecting disk, one end of the connecting disk is equidistantly provided with second grooves, the inner wall of the second groove is fixedly connected to a spring, one end of the spring is fixedly connected to a slider, the side of the slider away from the spring is fixedly connected to a top column, one end of the top column is fixedly connected to a block, the inner wall of the groove is equidistantly provided with grooves, and the block is engaged with the grooves.

[0007] Preferably, the fixing bottom device comprises an installation slot, a hollow fixing column, a connecting ring, a groove three, a spring two, a slider two, a block two, an avoidance slot, a travel slot, a spring three, a baffle, an unlocking ring, an L-shaped connecting rod and a positioning plate, the other end of the positioning mandrel is provided with an installation slot, the inner wall of the installation slot is slidably connected with a hollow fixing column, one end of the hollow fixing column is fixedly connected to the connecting ring, the inner wall of the installation slot is symmetrically provided with a groove three, the inner wall of the groove three is fixedly connected with a spring two, one end of the spring two is fixedly connected with a slider two, the side of the slider two away from the spring two is fixedly connected with a block two, one end of the block two is clamped with one side of the connecting ring, one side of the connecting ring is provided with an avoidance slot, one end of the hollow fixing column is equidistantly provided with a travel slot, the inside of the hollow fixing column is fixedly connected with a spring three, one end of the spring three is fixedly connected with a baffle, the baffle extending out of the travel slot is fixedly connected with an unlocking ring, one side of the baffle is fixedly connected with an L-shaped connecting rod, and one end of the hollow fixing column is fixedly connected with the positioning plate.

[0008] Preferably, a second slide groove is provided at one end of the hollow fixed column, and the inner wall of the second slide groove and the L-shaped connecting rod facilitate sliding of the L-shaped connecting rod.

[0009] Preferably, a toggle groove is symmetrically provided on one side of the connecting disk to facilitate the rotation of the connecting disk.

[0010] Preferably, a shift block is fixedly connected to the end of the L-shaped connecting rod to facilitate shifting of the L-shaped connecting rod.

[0011] Preferably, one end of the slider one is symmetrically fixedly connected to a limiting slider one, the inner wall of the groove two is symmetrically provided with a limiting slide groove one, and the limiting slider one is slidably connected to the limiting slide groove one, so as to facilitate limiting the slider one.

[0012] Preferably, one end of the slider 2 is symmetrically fixedly connected to the limiting slider 2, the inner wall of the groove 3 is symmetrically provided with a limiting slide groove 2, and the limiting slider 2 is slidably connected to the limiting slide groove 2, so as to limit the slider 2.

[0013] Preferably, a stop column is fixedly connected to the inner wall of the installation groove to facilitate limiting the position of the hollow fixed column.

[0014] On the other hand, the present invention also provides an operating method of the above-mentioned horizontal indexing tool, the steps of which are as follows:

[0015] 1) Fixation: First, fix the positioning plate at the specified position. Then align the mounting groove on the positioning mandrel with the hollow fixed column and insert it. When the connecting ring pushes the clamping block 2 and engages with it, it means that the positioning mandrel is installed.

[0016] 2) Assembly. At this time, place the round horizontal bead and the cylindrical horizontal bubble in the round groove and the cylindrical groove respectively. One side of the round horizontal bead and the cylindrical horizontal bubble are adsorbed by magnet one and magnet two. Then insert the limiting column into groove one, and match the limiting groove on the limiting column with the retaining groove to limit the round horizontal bead and the cylindrical horizontal bubble. Then push the connecting plate into groove one. At this time, rotate the connecting plate to squeeze the clamping block one with the inner wall of groove one, so that the slider one compresses the spring one. Along with the rotation of the connecting plate, when the clamping block one is completely engaged with the clamping groove, the limiting column can stably fix the round horizontal bead and the cylindrical horizontal bubble on the positioning core shaft.

[0017] 3) Measure, install the positioning mandrel on the positioning plate, rotate the positioning plate and the positioning mandrel so that the water beads of the round level bead and the cylindrical level bubble are basically kept in the center of the level ruler, then rotate the scale 90° to check the level and set the angle.

[0018] 4) Rotate the positioning mandrel to make the circular horizontal bead and the outer longitudinal cylindrical horizontal bubble stay in the center position, then rotate the CNC indexing axis to make the circular horizontal bead and the inner transverse cylindrical horizontal bubble stay in the center position, and then rotate the CNC indexing axis 90° to check that the outer longitudinal cylindrical horizontal bubble stays in the center position. If it is not in the center, adjust the axis level. Rotate the horizontal indexing tool 90° to check that the outer longitudinal cylindrical horizontal bubble stays in the center position. If it is not in the center, fine-tune the CNC indexing axis to determine the zero position of the indexing axis.

[0019] 5) Disassembly and assembly: when the positioning mandrel needs to be separated from the hollow fixed column, the shift block is moved to make the L-shaped connecting rod drive the baffle and the unlocking ring to move. As the unlocking ring moves, the spring three begins to be compressed and the clamping block two begins to be squeezed, so that the clamping block two moves toward the groove three. When the unlocking ring is completely moved into the avoidance groove, the clamping block two cannot be clamped with one side of the connecting ring due to the sliding of the unlocking ring. At this time, the disassembly and assembly of the positioning mandrel is completed.

[0020] Compared with the related art, the present invention has the following beneficial effects:

[0021] 1. When the horizontal indexing tool and the operating method of the present invention are used, a slider is pushed by a spring to stably engage a clamping block with a clamping slot, and the cooperation of a limit slot and a retaining slot facilitates the disassembly and assembly of a round level bead and a cylindrical level bubble.

[0022] 2. When the horizontal indexing tool and operating method of the present invention are in use, the second clamping block is clamped with one side of the connecting ring, and the unlocking ring is moved to the avoidance groove by pushing the L-shaped connecting rod, so that the second clamping block cannot be clamped with the connecting ring, thereby facilitating the disassembly and assembly of the positioning shaft core. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 One of the overall structural schematic diagrams provided by the present invention;

[0024] Figure 2 A schematic diagram of the circular groove structure provided by the present invention;

[0025] Figure 3 The second schematic diagram of the overall structure provided by the present invention;

[0026] Figure 4 A schematic diagram of the retaining groove structure provided by the present invention;

[0027] Figure 5 A schematic diagram of the structure of the limiting device provided by the present invention;

[0028] Figure 6 A schematic diagram of the structure of the bottom fixing device provided by the present invention;

[0029] Figure 7 A schematic diagram of the structure of the second limit slider provided by the present invention;

[0030] Figure 8 This is a schematic diagram of the avoidance groove structure provided by the present invention.

[0031] Numbers in the figure: 1, positioning mandrel; 2, round level bead; 3, cylindrical level bubble; 4, round groove; 5, cylindrical groove; 6, magnet 1; 7, magnet 2; 8, connecting column; 81, stop groove; 9, groove 1; 10, limit column; 11, limit groove; 12, limit device; 121, connecting plate; 122, groove 2; 123, spring 1; 124, slider 1; 125, top column; 126, block 1; 127, groove; 13, bottom fixing device; 131, installation groove; 132, Hollow fixed column; 133, connecting ring; 134, groove three; 135, spring two; 136, slider two; 137, block two; 138, avoidance groove; 139, travel groove; 1310, spring three; 1311, baffle; 1312, unlocking ring; 1313, L-shaped connecting rod; 1314, positioning plate; 14, slide groove two; 15, toggle groove; 16, toggle block; 17, limit slide one; 18, limit slide groove one; 19, limit slide two; 20, limit slide groove two; 21, blocking column. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0033] In the specific implementation process, Figure 1-4As shown, a tool for horizontal division and an operating method include a positioning mandrel 1, a circular horizontal bead 2 and a cylindrical horizontal bubble 3, wherein a circular groove 4 is provided at one end of the positioning mandrel 1, a cylindrical groove 5 is provided at one end of the positioning mandrel 1, a magnet 6 is symmetrically fixedly connected to the inner wall of the circular groove 4, a magnet 2 7 is symmetrically fixedly connected to the inner wall of the cylindrical groove 5, the circular horizontal bead 2 is placed in the circular groove 4, the cylindrical horizontal bubble 3 is placed in the cylindrical groove 5, one side of the circular horizontal bead 2 and the cylindrical horizontal bubble 3 are both fixedly connected to a connecting column 8, a retaining groove 81 is provided at one end of the connecting column 8, a groove 9 is provided at one end of the positioning mandrel 1, a limiting column 10 is slidably connected to the inner wall of the groove 9, a limiting groove 11 is provided at one end of the limiting column 10, one end of the limiting column 10 is rotatably connected to a limiting device 12, and a fixing bottom device 13 is provided at the other end of the positioning mandrel 1.

[0034] refer to Figure 3-5 As shown, the limiting device 12 includes a connecting disk 121, a groove 122, a spring 123, a slider 124, a top column 125, a block 126 and a groove 127. One end of the limiting column 10 is rotatably connected to the connecting disk 121, one end of the connecting disk 121 is equidistantly provided with grooves 122, the inner wall of the groove 122 is fixedly connected with a spring 123, one end of the spring 123 is fixedly connected with a slider 124, the side of the slider 124 away from the spring 123 is fixedly connected with a top column 125, one end of the top column 125 is fixedly connected with a block 126, the inner wall of the groove 19 is equidistantly provided with grooves 127, the block 126 is engaged with the groove 127, and one side of the connecting disk 121 is symmetrically provided with a toggle groove 15.

[0035] refer to Figure 6-8As shown, the fixing bottom device 13 includes a mounting groove 131, a hollow fixing column 132, a connecting ring 133, a groove three 134, a spring two 135, a slider two 136, a block two 137, an avoidance groove 138, a travel groove 139, a spring three 1310, a baffle 1311, an unlocking ring 1312, an L-shaped connecting rod 1313 and a positioning plate 1314. The other end of the positioning mandrel 1 is provided with a mounting groove 131, the inner wall of the mounting groove 131 is slidably connected with the hollow fixing column 132, one end of the hollow fixing column 132 is fixedly connected with the connecting ring 133, the inner wall of the mounting groove 131 is symmetrically provided with grooves three 134, the inner wall of the groove three 134 is fixedly connected with a spring two 135, one end of the spring two 135 is fixedly connected with a slider two 136, and the side of the slider two 136 away from the spring two 135 is fixedly connected with a block two 137 One end of the second card block 137 is clamped with one side of the connecting ring 133, and an avoidance groove 138 is opened on one side of the connecting ring 133. A travel groove 139 is equidistantly opened on one end of the hollow fixed column 132. A spring three 1310 is fixedly connected inside the hollow fixed column 132, and one end of the spring three 1310 is fixedly connected to a baffle 1311. The baffle 1311 extends out of the travel groove 139 and is fixedly connected to an unlocking ring 1312. One side of the baffle 1311 is fixedly connected to an L-shaped connecting rod 1313. One end of the hollow fixed column 132 is fixedly connected to a positioning plate 1314. A sliding groove 14 is opened on one end of the hollow fixed column 132. The inner wall of the sliding groove 14 is connected to the L-shaped connecting rod 1313. The end of the L-shaped connecting rod 1313 is fixedly connected to a shift block 16, and the inner wall of the mounting groove 131 is fixedly connected to a blocking column 21.

[0036] refer to Figure 5 As shown, one end of the slider 124 is symmetrically fixedly connected to the limiting slider 17, and the inner wall of the groove 122 is symmetrically provided with a limiting slide groove 18, and the limiting slider 17 is slidably connected with the limiting slide groove 18 to facilitate limiting the slider 124.

[0037] refer to Figure 6-7 As shown, one end of the slider 136 is symmetrically fixedly connected to the limiting slider 19, and the inner wall of the groove 134 is symmetrically provided with a limiting groove 20, and the limiting slider 19 is slidably connected to the limiting groove 20 to facilitate limiting the slider 136.

[0038] refer to Figures 1 to 8 As shown, the horizontal indexing tool and operation method, the steps are as follows:

[0039] 1) Fixation: First, fix the positioning plate 1314 at the specified position, then align the installation groove 131 on the positioning core shaft 1 with the hollow fixing column 132 and insert it. When the connecting ring 133 pushes the clamping block 137 and engages with it, it means that the positioning core shaft 1 is installed.

[0040] 2) Assembly, at this time, place the round horizontal bead 2 and the cylindrical horizontal bubble 3 in the round groove 4 and the cylindrical groove 5 respectively, one side of the round horizontal bead 2 and the cylindrical horizontal bubble 3 are adsorbed by magnet 1 6 and magnet 2 7, then insert the limiting column 10 into the groove 9, and match the limiting groove 11 on the limiting column 10 with the retaining groove 81 to limit the round horizontal bead 2 and the cylindrical horizontal bubble 3, and then push the connecting plate 121 into the groove 9, at this time, rotate the connecting plate 121 so that the clamping block 126 is squeezed with the inner wall of the groove 9, so that the slider 124 compresses the spring 123, and along with the rotation of the connecting plate 121, when the clamping block 126 is completely engaged with the clamping groove 127, the limiting column 10 stably fixes the round horizontal bead 2 and the cylindrical horizontal bubble 3 on the positioning core shaft 1.

[0041] 3) When using, install the positioning core shaft 1 on the positioning plate 1314, and rotate the positioning plate 1314 and the positioning core shaft 1 so that the water beads of the round level bead 2 and the cylindrical level bubble 3 are basically kept in the center of the level ruler, and then rotate the scale 90° to check the level and set the angle.

[0042] 4) Rotate the positioning core shaft 1 so that the circular horizontal bead 2 and the outer longitudinal cylindrical horizontal bubble 3 stay in the center position, then rotate the CNC dividing axis so that the circular horizontal bead 2 and the inner transverse cylindrical horizontal bubble 3 stay in the center position, and rotate the CNC dividing axis 90° again to check that the outer longitudinal cylindrical horizontal bubble 3 stays in the center position. If it is not in the center, adjust the axis line horizontally, rotate the horizontal dividing tool 90° to check that the outer longitudinal cylindrical horizontal bubble 3 stays in the center position. If it is not in the center, fine-tune the CNC dividing axis to determine the zero position of the dividing axis.

[0043] 5) Disassembly and assembly: when the positioning spindle 1 needs to be separated from the hollow fixed column 132, the shift block 16 is moved to make the L-shaped connecting rod 1313 drive the baffle 1311 and the unlocking ring 1312 to move. As the unlocking ring 1312 moves, the spring three 1310 begins to be compressed and the clamping block two 137 begins to be squeezed, so that the clamping block two 137 moves toward the groove three 134. When the unlocking ring 1312 is completely moved into the avoidance groove 138, the clamping block two 137 cannot be clamped with one side of the connecting ring 133 due to the sliding of the unlocking ring 1312. At this time, the disassembly and assembly of the positioning spindle 1 is completed.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A tool for horizontal indexing, characterized in that: The invention comprises a positioning core shaft (1), a circular level bead (2) and a cylindrical level bubble (3), wherein one end of the positioning core shaft (1) is provided with a circular groove (4), one end of the positioning core shaft (1) is provided with a cylindrical groove (5), the inner wall of the circular groove (4) is symmetrically fixedly connected with a first magnet (6), the inner wall of the cylindrical groove (5) is symmetrically fixedly connected with a second magnet (7), the circular level bead (2) is placed in the circular groove (4), the cylindrical level bubble (3) is placed in the cylindrical groove (5), the circular A connecting column (8) is fixedly connected to one side of the cylindrical level bead (2) and the cylindrical level bubble (3); a retaining groove (81) is provided at one end of the connecting column (8); a groove (9) is provided at one end of the positioning core shaft (1); a limiting column (10) is slidably connected to the inner wall of the groove (9); a limiting groove (11) is provided at one end of the limiting column (10); one end of the limiting column (10) is rotatably connected to a limiting device (12); and a fixing bottom device (13) is provided at the other end of the positioning core shaft (1); The limiting device (12) comprises a connecting disk (121), a second groove (122), a spring (123), a slider (124), a top column (125), a clamping block (126) and a clamping groove (127); one end of the limiting column (10) is rotatably connected to the connecting disk (121); one end of the connecting disk (121) is provided with a second groove (122) at equal intervals; the inner wall of the second groove (122) is fixedly connected to the spring (123); one end of the spring (123) is fixedly connected to the slider (124); a side of the slider (124) away from the spring (123) is fixedly connected to the top column (125); one end of the top column (125) is fixedly connected to the clamping block (126); the inner wall of the groove (9) is provided with clamping grooves (127) at equal intervals; the clamping block (126) is clamped with the clamping grooves (127); The fixing device (13) comprises a mounting groove (131), a hollow fixing column (132), a connecting ring (133), a groove three (134), a spring two (135), a slider two (136), a clamping block two (137), an avoidance groove (138), a travel groove (139), a spring three (1310), a baffle (1311), an unlocking ring (1312), an L-shaped connecting rod (1313) and a positioning plate (1314); the other end of the positioning spindle (1) is provided with a mounting groove (131); the inner wall of the mounting groove (131) is slidably connected to the hollow fixing column (132); one end of the hollow fixing column (132) is fixedly connected to the connecting ring (133); the inner wall of the mounting groove (131) is symmetrically provided with groove three (134); the inner wall of the groove three (134) is fixedly connected to the spring two (135); the spring two (135 ) is fixedly connected to a slider 2 (136) at one end, a side of the slider 2 (136) away from the spring 2 (135) is fixedly connected to a clamping block 2 (137), one end of the clamping block 2 (137) is clamped with a side of a connecting ring (133), one side of the connecting ring (133) is provided with an avoidance groove (138), one end of the hollow fixed column (132) is equidistantly provided with travel grooves (139), a spring 3 (1310) is fixedly connected inside the hollow fixed column (132), one end of the spring 3 (1310) is fixedly connected to a baffle (1311), the baffle (1311) protruding from the travel groove (139) is fixedly connected to an unlocking ring (1312), one side of the baffle (1311) is fixedly connected to an L-shaped connecting rod (1313), and one end of the hollow fixed column (132) is fixedly connected to a positioning plate (1314); The end of the L-shaped connecting rod (1313) is fixedly connected to a shifting block (16).

2. The horizontal indexing tool according to claim 1, characterized in that: A second slide groove (14) is provided at one end of the hollow fixed column (132), and an inner wall of the second slide groove (14) is connected to an L-shaped connecting rod (1313).

3. The horizontal indexing tool according to claim 1, characterized in that: A toggle groove (15) is symmetrically provided on one side of the connection disk (121).

4. The horizontal indexing tool according to claim 1, characterized in that: One end of the slider 1 (124) is symmetrically fixedly connected to the limit slider 1 (17), and the inner wall of the groove 2 (122) is symmetrically provided with a limit slide groove 1 (18), and the limit slider 1 (17) is slidably connected to the limit slide groove 1 (18).

5. The horizontal indexing tool according to claim 1, characterized in that: One end of the second slide block (136) is symmetrically fixedly connected to the second limit slide block (19), and the inner wall of the third groove (134) is symmetrically provided with a second limit slide groove (20), and the second limit slide block (19) is slidably connected to the second limit slide groove (20).

6. The horizontal indexing tool according to claim 1, characterized in that: A blocking column (21) is fixedly connected to the inner wall of the installation groove (131).

7. A method for operating a horizontal indexing tool according to any one of claims 1 to 6, characterized in that: The steps are as follows: 1) Fixing: first fix the positioning plate (1314) at a specified position, then align the mounting groove (131) on the positioning mandrel (1) with the hollow fixing column (132) and insert it. When the connecting ring (133) pushes the clamping block (137) and engages with it, it indicates that the positioning mandrel (1) is installed; 2) Assemble, place the circular level bead (2) and the cylindrical level bubble (3) in the circular groove (4) and the cylindrical groove (5) respectively, adsorb one side of the circular level bead (2) and the cylindrical level bubble (3) to the magnet 1 (6) and the magnet 2 (7), then insert the limit column (10) into the groove 1 (9), and match the limit groove (11) on the limit column (10) with the stop groove (81) to limit the circular level bead (2) and the cylindrical level bubble (3), and then connect The connecting plate (121) is pushed into the groove (9), and the connecting plate (121) is rotated so that the clamping block (126) is pressed against the inner wall of the groove (9), so that the slider (124) compresses the spring (123). With the rotation of the connecting plate (121), when the clamping block (126) is completely engaged with the clamping groove (127), the limiting column (10) stably fixes the circular level bead (2) and the cylindrical level bubble (3) on the positioning core shaft (1); 3) Measurement, install the positioning mandrel (1) on the positioning plate (1314), rotate the positioning plate (1314) and the positioning mandrel (1) so that the water beads of the circular level bead (2) and the cylindrical level bubble (3) are basically kept in the center of the level ruler, and then rotate the scale by 90° to check the level and set the angle; 4) Adjustment: Rotate the positioning mandrel (1) so that the circular horizontal bead (2) and the outer longitudinal cylindrical horizontal bubble (3) stay at the center position. Rotate the CNC indexing axis so that the circular horizontal bead (2) and the inner transverse cylindrical horizontal bubble (3) stay at the center position. Rotate the CNC indexing axis 90° again to check that the outer longitudinal cylindrical horizontal bubble (3) stays at the center position. If it is not at the center, adjust the axis horizontally. Rotate the horizontal indexing tool 90° to check that the outer longitudinal cylindrical horizontal bubble (3) stays at the center position. If it is not at the center, fine-tune the CNC indexing axis to determine the zero position of the indexing axis. 5) Disassembly and assembly. When the positioning mandrel (1) needs to be separated from the hollow fixed column (132), the shifting block (16) is moved, so that the L-shaped connecting rod (1313) drives the baffle (1311) and the unlocking ring (1312) to move. As the unlocking ring (1312) moves, the spring three (1310) begins to be compressed and the clamping block two (137) begins to be squeezed, so that the clamping block two (137) moves toward the groove three (134). When the unlocking ring (1312) is completely moved into the avoidance groove (138), the clamping block two (137) cannot be clamped with one side of the connecting ring (133) due to the sliding of the unlocking ring (1312). At this time, the disassembly and assembly of the positioning mandrel (1) is completed.

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