Gear Zero Positioning Seat

Abstract

A toothed sprocket zero-point positioning seat includes a first positioning group and a second positioning group that are detachably engaged with each other. The first positioning group includes at least three first positioning teeth arranged at angular intervals and surrounding a first central axis, with a first tooth groove formed between adjacent first positioning teeth. The second positioning group includes at least three second positioning teeth arranged at angular intervals and surrounding a second central axis, with a second tooth groove formed between 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, thereby improving positioning accuracy and preventing positioning angle deflection.

Claims

1. A gear sprocket zero-point positioning seat, comprising 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, which are arranged at angular intervals and surround 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, which are arranged at angular intervals and surround the periphery of the second central shaft, with a second tooth groove formed between 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 respectively extend into the second tooth groove of the second positioning group, and the second positioning teeth of the second positioning group respectively extend into the first tooth groove of the first positioning group.

2. The gear zero-point positioning seat as described in claim 1, wherein 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 member, and the at least three second positioning teeth surround the periphery of the locking member, the locking member being used to lock the locking bolt.

3. The zero-point positioning seat of the gear disk as described in claim 2, wherein the first positioning group includes a first base and a first gear disk; the first gear disk is annular and fixed to the first base; a first central shaft is formed at the center of the first gear disk; at least three first positioning teeth are angularly spaced and protrude from the side of the first gear disk away from the first base; a locking bolt is fixed to the first base and coaxially arranged with the first central shaft, the locking bolt having a locking flange; the second positioning group includes a second base and a second gear disk; the second gear disk is annular and fixed to the second base, the second gear disk having a central hole; a second central shaft is formed in the central hole of the second gear disk; at least three second positioning teeth are angularly spaced and protrude from the side of the second gear disk away from the second base; a locking member is mounted on the second base and coaxially arranged with the second central shaft, and has a sleeve ring passing through the central hole of the second gear disk 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 zero-point positioning seat of the gear disk as described in claim 3, wherein the locking member is movable relative to the second base and the second gear disk along the second central axis; the central hole of the second gear disk 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 a plurality of radially penetrating movable holes; the plurality of locking blocks are respectively placed in the plurality of movable holes; when the locking blocks are moved to the movable section of the central hole of the second gear disk, the locking blocks are movable toward the second gear disk; and when the locking blocks are moved to the locking section of the central hole of the second gear disk, the locking blocks are limited by the hole wall of the locking section and extend into the collar.

5. The zero-point positioning seat of the gear plate as described in any one of claims 1 to 4, wherein 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 zero-point positioning seat as described in claim 5, wherein 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, the angle of the second guide angle being the same as that of the first guide angle.

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