Splicing displacement detection element
By fitting the aligned splicing unit on the end surface of the scale, the accuracy problem after splicing of the scale is solved, and the flexible use of the encoder and economical multi-stroke adaptability are achieved.
Patent Information
- Application Number
- CN202422418741.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The existing scales are difficult to maintain high precision after splicing, resulting in limited encoder travel and inconvenient transportation and storage.
Using multiple splicing units, the end faces of the scale are bonded and aligned and connected through the first and second connecting sheets to ensure high-precision continuity of grid marks and to cure the connection with glue.
It realizes flexible splicing of scales, reduces processing difficulty and equipment costs, and is suitable for multiple travel scenarios, making it easy to transport and store.
Smart Images
Figure CN223122152U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of encoders, in particular to a splicable displacement detection element. Background Art
[0002] A linear encoder is used in combination with a grating scale. When they move relative to each other, the linear encoder reads the relative position information through the grating scale and is widely used as a common displacement sensor in fields such as numerical control machine tools, robots, aerospace, and precision instruments. Existing grating scales, especially hard grating scales, are inconvenient to be curled and deformed for compression transportation and reducing storage space, and the processing length is also limited by existing production equipment, resulting in limited stroke of the linear encoder. If the grating scales are directly spliced for use, due to the fact that the distance between the splicing ends and the grating size are processed directly, it is difficult to guarantee the accuracy. Therefore, after splicing, there will be a large deviation between the splicing part and the grating pitch of the grating scale itself, ultimately affecting the performance of the product. Content of the Utility Model
[0003] In order to solve the above problems, the utility model provides a splicable displacement detection element.
[0004] The splicable displacement detection element provided by the utility model adopts the following technical scheme:
[0005] A splicable displacement detection element includes a plurality of splicing units connected in sequence. Each splicing unit includes: a grating scale with periodic grating lines; a first connecting piece connected to one end of the grating scale; a second connecting piece connected to the other end of the grating scale; the adjacent splicing units are connected by aligning and fitting the end faces of the first connecting piece and the end faces of the second connecting piece, so as to realize the high-precision continuity of the periodic grating lines of the grating scales of the adjacent splicing units.
[0006] Preferably, the adjacent grating scales can be of different lengths.
[0007] Preferably, both the first connecting piece and the second connecting piece are connected to the grating scale by glue curing.
[0008] Preferably, the first connecting piece has a convex part protruding from the end face of the first connecting piece, and the second connecting piece has a concave part recessed into the end face of the second connecting piece.
[0009] Compared with the prior art, the advantages of the present utility model are as follows: the grating rulers are connected to each other by splicing, solving the problem of limited length. At the same time, by transferring the splicing accuracy from the grating rulers to the connecting pieces, the process is simplified, reducing the processing difficulty and the cost of upgrading equipment. The splicing units are separately packaged, which is easy for transportation and storage. Relying on existing equipment for production is cost-effective, and the combined use of grating ruler units with different length specifications can be applied to the multi-travel scenarios of encoders. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 FIG. is a perspective view of a splicing unit of a spliceable displacement detection element according to an embodiment of the present utility model.
[0011] Figure 2 FIG. is an exploded view of the structure of a spliceable displacement detection element according to an embodiment of the present utility model.
[0012] Figure 3 FIG. is a splicing schematic diagram of a spliceable displacement detection element according to an embodiment of the present utility model.
[0013] DESCRIPTION OF THE REFERENCE NUMERALS:
[0014] 1, grating ruler; 2, first connecting piece; 201, end face of the first connecting piece; 202, convex part; 3, second connecting piece; 301, end face of the second connecting piece; 302, concave part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0016] A spliceable displacement detection element disclosed by the present utility model includes a plurality of splicing units connected in sequence.
[0017] Referring to Figure 1 , in an embodiment of the present utility model, the splicing unit includes a grating ruler 1, a first connecting piece 2, and a second connecting piece 3. The first connecting piece 2 is bonded and cured with one end of the grating ruler 1 by glue to form an integral body, and the second connecting piece 3 is bonded and cured with the other end of the grating ruler 1 by glue to form an integral body.
[0018] Refer to Figure 2 and Figure 3, the first connecting piece 2 included in the continuous splicing unit of the displaceable splicing detection element has a convex portion 202 protruding from the end face 201 of the first connecting piece, and the second connecting piece 3 has a concave portion 302 recessed into the end face 301 of the second connecting piece. The convex portion 202 of the first connecting piece 2 is inserted into the concave portion 302 of the second connecting piece 3 to achieve rapid positioning of adjacent splicing units, guiding the end face 201 of the first connecting piece and the end face 301 of the second connecting piece to be attached and aligned in a connecting manner, so that adjacent two splicing units have a unique positional relationship, and precise alignment realizes the high-precision continuity of the periodic grid lines of the grating ruler 1 of the adjacent splicing units.
[0019] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. A spliceable displacement detection element, comprising a plurality of splicing units connected in sequence, characterized in that, The splicing unit includes: A grating scale having periodic grating lines; A first connecting piece, which is connected to one end of the grating scale; A second connecting piece, which is connected to the other end of the grating scale; Between adjacent splicing units, they are connected by fitting and aligning the end face of the first connecting piece and the end face of the second connecting piece, so as to realize the high-precision continuity of the periodic grating lines of the grating scales of adjacent splicing units.
2. The splicable displacement detection element according to claim 1, characterized in that Adjacent grating scales can have different lengths.
3. The splicable displacement detection element according to claim 1, characterized in that, Both the first connecting piece and the second connecting piece are connected to the grating scale by glue curing.
4. The splicable displacement detection element according to claim 1, wherein The first connecting piece has a convex portion protruding from the end face of the first connecting piece, and the second connecting piece has a concave portion recessed into the end face of the second connecting piece.