Fluted disc zero-point positioning seat

Abstract

The utility model relates to a fluted disc zero point positioning seat, which comprises a first positioning group and a second positioning group which are detachably and mutually combined, the first positioning group comprises at least three first positioning teeth which are arranged at intervals at an angle and surround the periphery of a first central shaft, a first tooth groove is formed between two adjacent first positioning teeth, and a second tooth groove is formed between two adjacent second positioning teeth. The second positioning group comprises at least three second positioning teeth which are arranged at intervals at an angle and surround the periphery of a second central shaft, and a second tooth groove is formed between every two adjacent second positioning teeth; the first positioning teeth of the first positioning group respectively extend into the second tooth grooves of the second positioning group, and the second positioning teeth of the second positioning group respectively extend into the first tooth grooves of the first positioning group, so that the positioning accuracy can be improved, and the deflection of a positioning angle is avoided.

Description

Technical Field

[0001] This utility model relates to a zero-point positioning system for a processing machine, and more particularly to a zero-point positioning seat that can improve positioning accuracy. Background Technology

[0002] Zero-point positioning systems are mainly used in machining or measuring machine tools and automated production. They mainly consist of a positioning chuck installed on the machine tool and positioning bolts installed on the assembly. The assembly can be a pallet, jig, or workpiece, etc. The assembly can be locked into the positioning hole of the positioning chuck on the machine tool by the positioning bolts, which can quickly position the workpiece, shorten the time for recalibrating the zero point position and the line change time, and have high repeatability, which can increase the actual machining time of the machine tool and improve work efficiency.

[0003] However, existing zero-point positioning systems mainly have the following problems:

[0004] 1. The zero-point positioning system uses the taper of a single positioning bolt for positioning and tensioning. The positioning point is located at the center of the positioning bolt. If subjected to radial force, the zero-point positioning system is prone to displacement, resulting in inaccurate machining.

[0005] 2. When special processing requires changing the angle, the zero-point positioning system can only be positioned by the central axis of the positioning bolt, and cannot be used for angle positioning.

[0006] 3. Since the zero-point positioning system uses the taper of the positioning bolts for positioning, a single set of positioning bolts and positioning discs cannot define a straight line. If precise straight-line accuracy is required, multiple sets of positioning bolts and positioning discs need to be used. Utility Model Content

[0007] In view of the above-mentioned deficiencies, the main purpose of this utility model is to provide a gear plate zero-point positioning seat that can improve positioning accuracy. It can improve the problem that the angle is easily offset after the worktable is hit by external force during the change process, and can quickly change the positioning angle.

[0008] To achieve the above objectives, the gear plate zero-point positioning seat provided by this utility model includes a first positioning group and a second positioning group that are detachably matched with each other, wherein:

[0009] The first positioning group includes a first central shaft and at least three first positioning teeth, the at least three first positioning teeth being arranged at angular intervals and surrounding the periphery of the first central shaft, with a first tooth groove formed between adjacent first positioning teeth; and

[0010] The second positioning group includes a second central shaft and at least three second positioning teeth. The at least three second positioning teeth are arranged at angular intervals and surround the periphery of the second central shaft. A second tooth groove is formed between two adjacent second positioning teeth.

[0011] When the first positioning group and the second positioning group are engaged with each other, the first positioning teeth of the first positioning group extend into the second tooth groove of the second positioning group, and the second positioning teeth of the second positioning group extend into the first tooth groove of the first positioning group.

[0012] The zero-point positioning seat for the gear disk provided by this utility model has the following advantages:

[0013] 1. Improved positioning accuracy: When the first positioning group and the second positioning group are engaged with each other, positioning is achieved through the interlocking toothed structure of the first positioning group and the second positioning group. Therefore, even if the second positioning group is affected by external force and the angle is slightly deflected, the positioning angle can still be corrected through the interlocking toothed structure, ensuring the precise alignment of the zero point. This ensures the stability and accuracy of the workpiece position during high-precision machining or measurement.

[0014] 2. Capable of angular positioning: Through the ring-shaped, interlocking toothed structure, the positioning angle of the second positioning group relative to the first positioning group can be adjusted before they are aligned and positioned, thus enabling it to be used for rotary indexing.

[0015] 3. Straight lines can be defined individually: A single zero-point positioning seat can define both the straight line and the angle. Once positioned, it will not rotate or shift, eliminating the need to use multiple zero-point positioning seats to avoid angle shift.

[0016] 4. Increased rigidity: When subjected to force, the first / second positioning teeth distributed on the periphery can bear the force, greatly increasing the rigidity during positioning. Attached Figure Description

[0017] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0018] Figure 2 This is a side view of a preferred embodiment of the present invention.

[0019] Figure 3 This is an exploded perspective view of a preferred embodiment of the present invention.

[0020] Figure 4 This is a cross-sectional side view of a preferred embodiment of the present invention.

[0021] Figure 5 This is a perspective view of the first positioning group in a preferred embodiment of the present invention.

[0022] Figure 6 This is a top view of the first positioning group of a preferred embodiment of the present invention.

[0023] Figure 7 This is a side view of the first toothed disc of a preferred embodiment of the present invention.

[0024] Figure 8 This is a perspective view of the second positioning group according to a preferred embodiment of the present invention.

[0025] Figure 9 This is a bottom view of the second positioning group of a preferred embodiment of the present invention.

[0026] Figure 10 This is a side view of the second toothed disc of a preferred embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram showing the first positioning group and the second positioning group being opened relative to each other in a preferred embodiment of the present invention.

[0028] Figure 12 This is a cross-sectional schematic diagram showing the first positioning group and the second positioning group being opened relative to each other in a preferred embodiment of the present invention.

[0029] Figure 13 This is a schematic diagram of the assembly of a preferred embodiment of the present invention. Detailed Implementation

[0030] Please refer to Figures 1 to 4 The preferred embodiment of the gear plate zero-point positioning seat provided by this utility model includes a first positioning group 10 and a second positioning group 20 that are detachably engaged with each other. The first positioning group 10 and the second positioning group 20 are respectively installed on a machine tool and a mounting component. The mounting component can be a tray, a jig, or a workpiece, etc.

[0031] Please refer to Figures 2 to 4 The first positioning group 10 includes a first central shaft A1 and at least three first positioning teeth 15. The at least three first positioning teeth 15 are arranged at angular intervals and surround the periphery of the first central shaft A1, with a first tooth groove 152 formed between adjacent first positioning teeth 15. The second positioning group 20 includes a second central shaft A2 and at least three second positioning teeth 25. The second positioning teeth 25 are arranged at angular intervals and surround the periphery of the second central shaft A2, with a second tooth groove 252 formed between adjacent second positioning teeth 25.

[0032] For further information, please refer to [link / reference]. Figure 3 and Figure 4The first positioning group 10 also includes a locking bolt 13, with first positioning teeth 15 surrounding the periphery of the locking bolt 13. The locking bolt 13 is coaxially arranged with the first central axis A1. The second positioning group 20 also includes a locking member 23, with second positioning teeth 25 surrounding the periphery of the locking member 23. The locking member 23 is coaxially arranged with the second central axis A2. The locking member 23 is used to lock the locking bolt 13 to prevent the second positioning group 20 from axially separating from the first positioning group 10.

[0033] Please refer to Figures 2 to 4 and Figure 13 When the first positioning group 10 and the second positioning group 20 are engaged with each other, the locking bolt 13 is locked to the locking member 23, the first positioning teeth 15 of the first positioning group 10 are respectively inserted into the second tooth groove 252 of the second positioning group 20, and the second positioning teeth 25 of the second positioning group 20 are respectively inserted into the first tooth groove 152 of the first positioning group 10.

[0034] Please refer to Figure 3 ,and Figures 5 to 7 Each first positioning tooth 15 has a first tooth tip 151 and two first tooth sides, the two first tooth sides being located on opposite sides of the first tooth tip 151, and each first tooth side having a first guide surface 153 extending obliquely away from the first tooth tip 151, such as... Figure 7 As shown, each first guide surface 153 forms a first guide angle θ1 with a vertical plane passing through the first central axis A1. From the side view, each first positioning tooth 15 has a trapezoidal profile, and each first tooth groove 152 has an inverted trapezoidal profile. Preferably, the first guide angle θ1 is greater than or equal to 5 degrees and less than or equal to 60 degrees.

[0035] Please refer to Figure 3 ,and Figures 8 to 10 Each second positioning tooth 25 has a second tooth tip 251 and two second tooth sides, the two second tooth sides being located on opposite sides of the second tooth tip 251, and each second tooth side having a second guide surface 253 extending obliquely away from the second tooth tip 251, such as... Figure 10 As shown, each second guide surface 253 forms a second guide angle θ2 with a vertical plane passing through the second central axis A2. From the side view, each second positioning tooth 25 has an inverted trapezoidal profile, and each second tooth groove 252 has a trapezoidal profile. Preferably, the angle of the second guide angle θ2 is greater than or equal to 5 degrees and less than or equal to 60 degrees, and the angles of the first guide angle θ1 and the second guide angle θ2 are the same.

[0036] Please refer to Figure 7 , Figure 10 , Figure 11 ,and Figure 13Since each first positioning tooth 15 has a first guide surface 153 and each second positioning tooth 25 has a second guide surface 253, during the process of the first positioning group 10 and the second positioning group 20 engaging with each other, the first positioning tooth 15 can more easily extend into the second tooth groove 252, and the second positioning tooth 25 can more easily extend into the first tooth groove 152. This facilitates disassembly and assembly during line changing operations, makes it easier for the second positioning group 20 to engage with the first positioning group 10, and at the same time can correct the positioning and improve the positioning accuracy.

[0037] Please refer to Figure 3 , Figure 5 ,and Figure 6 The opposite edges of the first tooth tip 151 of each first positioning tooth 15 are inclined to each other to form a first included angle α1. The opposite edges of the first tooth tip 151 are mirror-symmetrical along a radial direction. The first tooth tip 151 is fan-shaped when viewed from above. The angle α1 ranges from 10 degrees to 120 degrees. Preferably, the opposite edges of each first tooth groove 152 are parallel to each other. Please refer to [reference needed]. Figure 3 , Figure 8 ,and Figure 9 The two opposite edges of each second tooth groove 252 are inclined to each other to form a second included angle α2. The two opposite edges of the second tooth groove 252 are mirror symmetrical along a radial direction. The second tooth groove 252 is fan-shaped when viewed from above. The angle of the second included angle α2 is in the range of 10 degrees to 120 degrees, and the angle of the second included angle α2 is the same as that of the first included angle α1. Preferably, the two opposite edges of the second tooth tip 251 of each second positioning tooth 25 are parallel to each other.

[0038] For details, please refer to Figures 3 to 6 ,and Figure 12 The first positioning assembly 10 includes a first base 11, a first geared disc 150, and a locking bolt 13. The first geared disc 150 is annular and fixed to the first base 11. A first central shaft A1 is formed at the center of the first geared disc 150. At least three first positioning teeth 15 are arranged at equal angular intervals and protrude from the side of the first geared disc 150 away from the first base 11. The locking bolt 13 is fixed to the first base 11 and is coaxially arranged with the first central shaft A1. The locking bolt 13 has a locking flange 133.

[0039] Please refer to Figure 3 , Figure 4 , Figure 8 , Figure 9 ,and Figure 12The second positioning assembly 20 includes a second base 21, a locking member 23, and a second gear disc 250. The second gear disc 250 is annular and fixed to the second base 21. The second gear disc 250 has a central hole 254, and the second central shaft A2 is formed within the central hole 254 of the second gear disc 250. At least three second positioning teeth 25 are arranged at equal angular intervals and protrude from the side of the second gear disc 250 away from the second base 21. The locking member 23 is mounted on the second base 21 and has a sleeve 231 passing through the central hole 254 of the second gear disc 250 and a plurality of fasteners 233 that can extend into the sleeve 231. The sleeve 231 is coaxially arranged with the second central shaft A2. Figure 4 As shown, when the first positioning group 10 and the second positioning group 20 are engaged with each other, the locking bolt 13 extends into the collar 231, and the plurality of buckles 233 can extend into the collar 231 and engage the locking flange 133.

[0040] For details, please refer to Figure 4 and Figure 12 The locking member 23 can move along the second central axis A2 relative to the second base 21 and the second gear disk 250, adjusting the relative length of the collar 231 extending from the second gear disk 250. The central hole 254 of the second gear disk 250 has a movable section and a locking section. The diameter of the movable section is larger than the diameter of the locking section. In a preferred embodiment of the present invention, the chamfer at the end of the central hole 254 away from the second base 21 forms the movable section. The collar 231 has a plurality of radially penetrating movable holes, and the plurality of locking blocks 233 are respectively placed in the plurality of movable holes, such as... Figure 12 As shown, when the plurality of latching blocks 233 are moved to the movable section of the center hole 254 of the second gear disk 250, the plurality of latching blocks 233 can move toward the second gear disk 250, such as... Figure 4 As shown, when the plurality of buckles 233 are moved to the locking section of the center hole 254 of the second gear plate 250, the plurality of buckles 233 can be limited by the hole wall of the locking section and extend into the collar 231.

[0041] Please refer to Figures 2 to 4 ,and Figures 11 to 13The second positioning group 20 can be connected to a pneumatic device, and can drive the locking member 23 to move relative to the second base 21 along the second central axis A2 through gas pressure. When the locking member 23 moves to the movable section where the plurality of locking blocks 233 are aligned with the central hole 254 of the second gear disk 250, and the locking bolt 13 extends into the collar 231, the locking flange 133 can push the plurality of locking blocks 233 outward and pass through the plurality of locking blocks 233. Afterward, the locking member 23 can be driven by gas pressure to move away from the first positioning group 10, so that the plurality of locking blocks 233 move to the locking section of the central hole 254 of the second gear disk 250, and are limited by the hole wall of the locking section to extend into the collar 231 and lock the locking flange 133, preventing the first positioning group 10 and the second positioning group 20 from axially separating.

[0042] Utilizing the above-mentioned technical features, the gear disk zero-point positioning seat of this utility model has the following functional advantages:

[0043] 1. Improved positioning accuracy: When the first positioning group 10 and the second positioning group 20 are engaged with each other, the positioning is achieved by the first positioning teeth 15 and the second positioning teeth 25 arranged in a ring and meshing with each other. Therefore, even if the second positioning group 20 is affected by external force and deflects slightly, the positioning angle can still be corrected by the ring-shaped tooth profile to ensure the accurate positioning of the zero point position, thus ensuring the stability and accuracy of the workpiece position.

[0044] 2. Ability to perform angular positioning: The first positioning teeth 15 and the second positioning teeth 25, which are arranged in a ring and mesh with each other, can perform angular positioning. For example, if 45-degree positioning is required, eight first positioning teeth 15 and eight second positioning teeth 25 can be arranged at equal angular intervals. In this way, after the second positioning group 20 rotates 45 degrees, a majority of the second positioning teeth 25 can mesh with a majority of the first positioning teeth 15 to perform angular positioning. Angle positioning can be performed every 45 degrees, and the angle division accuracy can be less than 2 arcseconds (0.00056 degrees). The repeatability positioning accuracy is less than 0.001 millimeters, which can be described as rotation indexing.

[0045] 3. Straight lines can be defined individually: A single zero-point positioning seat can define both the straight line and the angle. Once positioned, it will not rotate or shift, eliminating the need to use multiple zero-point positioning seats to avoid angle shift.

[0046] 4. Improved rigidity: Positioning is achieved through the toothed engagement of the first positioning tooth 15 and the second positioning tooth 25, and then the locking bolt 13 and the fastener 23 located in the center act as a tensioning mechanism, making the positioning structure and the tensioning structure independent. When under force, the toothed engagement of the first positioning tooth 15 and the second positioning tooth 25 distributed on the periphery can bear the force, while the tensioning mechanism in the middle is not under force. When under force, the torque is relatively large, which increases the rigidity during positioning.

[0047] 5. Reduced costs: Since the positioning and tensioning structures are separated, the structure becomes simpler, which reduces processing costs.

[0048] 6. Improve work efficiency: Using a gear plate zero-point positioning seat can significantly improve the efficiency of the machining process. Because it can quickly and accurately position the workpiece, it can reduce the time for repositioning caused by angular deviation, thereby improving the production efficiency of machining.

[0049] 7. Easy to operate: Compared with existing positioning methods, the gear plate zero-point positioning seat is easy to operate, set and adjust, which can reduce operator errors and improve the smoothness of work.

[0050] 8. Excellent repeatability: Using a gear plate zero-point positioning seat, it can accurately position to the same zero point position every time it is used, which has good repeatability and stability, and significantly helps to improve machining accuracy and consistency.

[0051] 9. Excellent adaptability: Since a single gear plate zero-point positioning seat can define both straight lines and angles, it can be applied to workpieces of various shapes and sizes, exhibiting excellent versatility. Whether the workpiece is large or small, it can be positioned stably and accurately.

[0052] 10. Reduce errors: Positioning is achieved by using the first positioning teeth 15 and the second positioning teeth 25 arranged in a ring and meshing with each other, which can reduce errors caused by manual operation or other unstable factors and improve the reliability of the processing.

[0053] 11. Automation Integration: The gear plate zero-point positioning seat can be combined with automated equipment such as robotic arms to realize automated production processes, which has great application potential for modern intelligent manufacturing, especially in large-scale production environments.

Claims

1. A zero-point positioning seat for a gear disk, characterized in that, It comprises a first positioning group and a second positioning group that are detachably engaged with each other, wherein: The first positioning group includes a first central shaft and at least three first positioning teeth, the at least three first positioning teeth being arranged at angular intervals and surrounding the periphery of the first central shaft, with a first tooth groove formed between adjacent first positioning teeth; and The second positioning group includes a second central shaft and at least three second positioning teeth. The at least three second positioning teeth are arranged at angular intervals and surround the periphery of the second central shaft. A second tooth groove is formed between two adjacent second positioning teeth. When the first positioning group and the second positioning group are engaged with each other, the first positioning teeth of the first positioning group extend into the second tooth groove of the second positioning group, and the second positioning teeth of the second positioning group extend into the first tooth groove of the first positioning group.

2. The toothed disc zero-point positioning seat as described in claim 1, characterized in that, The first positioning group includes a locking bolt, and the at least three first positioning teeth surround the periphery of the locking bolt; The second positioning group includes a locking element, with at least three second positioning teeth surrounding the periphery of the locking element, which is used to lock the locking bolt.

3. The gear disk zero-point positioning seat as described in claim 2, characterized in that, The first positioning assembly includes a first base and a first gear plate; The first toothed disc is ring-shaped and fixed to the first base; The first central shaft is formed at the center of the first gear disk; The at least three first positioning teeth are arranged at equal angular intervals and protrude from the side of the first toothed disc away from the first base; The locking bolt is fixed to the first base and is coaxially arranged with the first central axis. The locking bolt has a locking flange. The second positioning assembly includes a second base and a second gear plate; The second toothed disc is annular and fixed to the second base, and the second toothed disc has a central hole; The second central shaft is formed within the central hole of the second gear disk; The at least three second positioning teeth are arranged at equal angular intervals and protrude from the side of the second toothed disc away from the second base; The locking element is mounted on the second base and is coaxially arranged with the second central shaft, and has a sleeve ring that passes through the central hole of the second gear plate and a plurality of locking blocks that can extend into the sleeve ring; When the first positioning group and the second positioning group are engaged, the locking bolt extends into the collar, and the plurality of buckles can extend into the collar and engage the locking flange.

4. The gear disk zero-point positioning seat as described in claim 3, characterized in that, The locking element is movable relative to the second base and the second gear plate along the second central axis; The center hole of the second gear has a movable section and a locking section, the diameter of the movable section being larger than the diameter of the locking section; The collar is provided with multiple radially penetrating movable holes; The plurality of fasteners are respectively placed in the plurality of movable holes; When a majority of the locking blocks are moved to the movable section of the center hole of the second gear plate, the majority of the locking blocks can move toward the second gear plate; and When a majority of the locking blocks are moved to the locking section of the center hole of the second gear plate, the majority of the locking blocks can be limited by the hole wall of the locking section and extend into the collar.

5. The gear disk zero-point positioning seat as described in any one of claims 1 to 4, characterized in that, Each first positioning tooth has a first tooth tip and two first tooth sides located on opposite sides of the first tooth tip, and each first tooth side has a first guide surface extending obliquely away from the first tooth tip; and Each second positioning tooth has a second tooth tip and two second tooth sides located on opposite sides of the second tooth tip, and each second tooth side has a second guide surface extending obliquely away from the second tooth tip.

6. The gear disk zero-point positioning seat as described in claim 5, characterized in that, Each first guide surface forms a first guide angle with a vertical plane passing through the first central axis, the angle of the first guide angle being greater than or equal to 5 degrees and less than or equal to 60 degrees; and Each second guide surface forms a second guide angle with a vertical plane passing through the second central axis, and the second guide angle has the same angle as the first guide angle.

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