阅读说明：本技术 分体式角度编码器的调制盘及其安装总成和安装方法 (Modulation disk of split type angle encoder and installation assembly and installation method thereof ) 是由 王忠杰 穆志明 于超 于 2020-07-31 设计创作，主要内容包括：本发明涉及一种分体式角度编码器的调制盘,用于安装在旋转轴的轴端面上,调制盘的外部轮廓呈圆片状或圆柱状,垂直于调制盘的轴线的其中一个圆形端面作为调制盘的安装面；调制盘上还开设有一贯穿调制盘两个圆形端面的中心孔,并且中心孔的横截面形状关于圆形端面的圆心中心对称,中心孔的内侧面用于与安装在轴端面上的偏心螺钉的螺帽抵紧配合,以通过旋转偏心螺钉来调整调制盘的轴线与旋转轴的轴线之间的偏心量；环绕中心孔的周向开设有多个供紧固件穿过的调制盘安装孔,以能够通过紧固件将安装面固定于轴端面上,本发明可大大提高调制盘的安装效率和安装精度。本发明还涉及一种分体式角度编码器的调制盘安装总成及调制盘安装方法。(The invention relates to a modulation disk of a split type angle encoder, which is used for being installed on the shaft end surface of a rotating shaft, the outer contour of the modulation disk is in a disc shape or a cylinder shape, and one circular end surface which is vertical to the axis of the modulation disk is used as the installation surface of the modulation disk; the modulation disc is also provided with a central hole penetrating through two circular end faces of the modulation disc, the cross section of the central hole is symmetrical about the center of the circle of the circular end face, and the inner side face of the central hole is used for being abutted and matched with a nut of an eccentric screw arranged on the end face of the shaft so as to adjust the eccentric amount between the axis of the modulation disc and the axis of the rotating shaft by rotating the eccentric screw; the invention can greatly improve the installation efficiency and the installation precision of the modulation disk. The invention also relates to a modulation board mounting assembly and a modulation board mounting method of the split type angle encoder.)

1. A reticle of a split type angle encoder for mounting on a shaft end surface of a rotary shaft,

the outer contour of the modulation disk is in a disc shape or a cylinder shape, and one circular end face perpendicular to the axis of the modulation disk is used as a mounting surface of the modulation disk;

the modulation disc is also provided with a center hole penetrating through two circular end faces of the modulation disc, the cross section of the center hole is symmetrical about the center of the circle of the circular end face, and the inner side face of the center hole is used for being tightly matched with a nut of an eccentric screw arranged on the end face of the shaft in a propping manner so as to adjust the eccentric amount between the axis of the modulation disc and the axis of the rotating shaft by rotating the eccentric screw;

and a plurality of modulation disk mounting holes for the fasteners to pass through are formed in the circumferential direction around the central hole, so that the mounting surface can be fixed on the shaft end surface through the fasteners.

2. The split angular encoder reticle of claim 1, wherein the reticle is a grating reticle, a magnetic grid reticle or a gear reticle.

3. The split-type angle encoder reticle of claim 2, wherein the reticle is a grating reticle, the inner side surface of the central hole is provided with at least one pair of abutting surfaces for abutting and matching with a nut of the eccentric screw, and an included angle between two abutting surfaces of each pair of abutting surfaces in the circumferential direction is 180 °.

4. The reticle of claim 3, wherein the cross section of the central hole is circular, the abutting surfaces are flat surfaces, and the distance between any abutting surface and the center of the circular end surface of the grating is equal, and any abutting surface is perpendicular to the diameter of the circular end surface.

5. The split-type angle encoder reticle of claim 4, wherein the inner side surface of the central hole is provided with at least one pair of adjustment grooves recessed toward the outer ring of the grating reticle, and the bottoms of the adjustment grooves form the abutting surface.

6. The chopper wheel of a split type angle encoder of claim 5, wherein the adjustment groove is U-shaped, and an arc-shaped transition edge is disposed at a corner position where the adjustment groove meets the central hole.

7. The chopper wheel of a split-type angle encoder of claim 3, wherein the abutting surface is a curved surface, a V-shaped surface, a slant surface or a wavy surface.

8. The reticle of a split-type angular encoder according to any one of claims 2 to 7, wherein the grating reticle is a steel drum grating or a glass grating, and,

the steel drum grating is cylindrical, a middle cavity of the steel drum grating forms the central hole, and the bottom end face of the steel drum grating forms the mounting surface;

the glass grating includes:

the grating seat comprises a cylinder and a convex ring which is protruded on the side wall of the cylinder along the radial direction, the bottom surface of the convex ring is flush with the bottom surface of the cylinder, the hollow cavity of the cylinder forms the central hole, and the bottom surface of the convex ring and the bottom surface of the cylinder form the mounting surface together;

the annular grating body is sleeved on the barrel and is fixedly connected with the convex ring.

9. A reticle mounting assembly of a split angular encoder comprising an eccentric screw, a rotating shaft, a fastener and a reticle according to any one of claims 1 to 8;

wherein the content of the first and second substances,

a plurality of shaft end mounting holes corresponding to the modulation disc mounting holes and at least one pair of position adjusting holes are formed in the shaft end surface of the rotating shaft, and the connecting line of the centers of any pair of position adjusting holes passes through the center of the rotating shaft;

the eccentric screw comprises a screw rod part and a screw cap connected with the screw rod part, the cross section of the screw cap is circular, an eccentric distance exists between the axis of the screw cap and the axis of the screw rod part, and the screw cap is at least provided with a non-circular operation part capable of driving the screw rod part to rotate;

the screw rod part is screwed in the position adjusting hole in a threaded manner, and the screw cap is tightly matched with the inner side surface of the central hole in a propping manner so as to adjust the eccentric amount between the axis of the grating and the axis of the rotating shaft by rotating the eccentric screw;

and the fastener passes through the mounting hole of the chopper wheel and then is screwed in the mounting hole of the shaft end so as to fix the mounting surface on the end surface of the shaft.

10. The chopper wheel mounting assembly of a split-type angle encoder of claim 9, wherein a portion of the screw portion of the eccentric screw is right-handed threaded and another portion of the screw portion of the eccentric screw is left-handed threaded.

11. The chopper wheel mounting assembly of a split type angle encoder according to claim 10, wherein an eccentric screw with a right-hand thread and an eccentric screw with a left-hand thread are arranged at intervals in a circumferential direction of the shaft end surface.

12. The chopper wheel mounting assembly of a split-type angle encoder of claim 9, wherein the operating portion is a polygonal operating portion protruding from a top of the nut, or the operating portion is a polygonal sunken groove formed in the top of the nut.

13. The chopper wheel mounting assembly of a split-type angle encoder of claim 9, wherein the eccentric screw further has an indicator member provided on a nut thereof for indicating a maximum eccentric position.

14. A reticle mounting method of a split-type angle encoder for mounting a reticle of the split-type angle encoder according to any one of claims 1 to 8, the reticle mounting method comprising the steps of:

1) screwing at least one pair of eccentric screws on the end surface of the shaft, enabling screw caps of the eccentric screws to be abutted against the inner side surface of the central hole, enabling the included angle of two eccentric screws in any pair of eccentric screws in the circumferential direction to be 180 degrees, enabling the eccentric screws to comprise screw rod parts and screw caps connected to the screw rod parts, enabling the cross sections of the screw caps to be circular, enabling the axes of the screw caps and the axes of the screw rod parts to have an eccentric distance, enabling the screw caps to be provided with at least one non-circular operation part capable of driving the screw rod parts to rotate, and rotating the eccentric screws so as to push the modulation disc to generate displacement through the screw caps;

2) and when the eccentricity between the axis of the modulation disk and the axis of the rotating shaft is not greater than a preset value, stopping rotating the eccentric screw, and fixing the mounting surface of the grating on the end surface of the shaft through a fastener.

15. The reticle installation method of a split type angle encoder according to claim 14, wherein in the step 1), a screw portion of the eccentric screw is right-handed threaded and a screw portion of the eccentric screw is left-handed threaded.

16. The reticle mounting method of a split type angle encoder according to claim 15, wherein an eccentric screw using a right-handed thread and an eccentric screw using a left-handed thread are arranged at intervals in a circumferential direction of the shaft end surface.

17. The chopper wheel installation method of a split type angular encoder according to claim 14, wherein in the step 1), further comprising: and applying a thread fastening agent at the thread matching position of the screw part of the eccentric screw and the end surface of the shaft.