CN214666633U - Single light source four-field scanning measuring device - Google Patents
Single light source four-field scanning measuring device Download PDFInfo
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- CN214666633U CN214666633U CN202022976039.0U CN202022976039U CN214666633U CN 214666633 U CN214666633 U CN 214666633U CN 202022976039 U CN202022976039 U CN 202022976039U CN 214666633 U CN214666633 U CN 214666633U
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Abstract
The utility model relates to an accurate instrument technical field specifically is a single light source four-field scanning measuring device, including reading head and measuring component, measuring component fixed connection is in the left side below of reading head, and the embedding of single light source infrared emission pipe sets up in the top center department of reading head, and collecting mirror fixed connection is in the bottom of single light source infrared emission pipe, and the bottom of instruction grating fixed connection in collecting mirror. According to the single-light-source four-field scanning measuring device, the single-light-source infrared emission tube is arranged, photoelectric signal conversion is achieved in a single-light-source transmission type four-field scanning mode, signal fluctuation caused by differences of multiple light sources in the prior art is reduced, a better scanning signal can be obtained, stability and subdivision precision of a product signal are ensured, and the anti-interference capability of the product is improved.
Description
Technical Field
The utility model relates to a precision instruments technical field specifically is a single light source four-field scanning measuring device.
Background
The traditional linear displacement grating ruler adopts an incremental grating sensor with multiple light sources, and the stability of a machine tool or an instrument is poor due to the difference of the consistency of the multiple light sources, so that the situation of unstable signals often occurs. From the effect of the current grating product use of a company, the requirements of a numerical control machine tool and a high-speed closed-loop control online detector cannot be met; the current mainstream grating ruler is a glass-based grating ruler based on a four-field scanning principle, and single-light-source transmission type four-field scanning is realized according to the measurement principle;
however, in the prior art, a multi-path light source is generally adopted for detection, signal fluctuation is easily caused by the difference between the light sources, the anti-interference capability of the product is low, and the subdivision accuracy of the product is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a single light source four-field scanning measuring device to the difference between the light source leads to detecting the low problem of precision when solving the adoption multichannel light source that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a single light source four-field scanning measuring device comprises a reading head and a measuring component, wherein the measuring component is fixedly connected to the lower part of the left side of the reading head,
the reading head includes: the reading head comprises a single light source infrared emission tube, a condensing lens, an indication grating and a silicon photovoltaic cell, wherein the single light source infrared emission tube is embedded in the center of the top of the reading head, the condensing lens is fixedly connected to the bottom of the single light source infrared emission tube, the indication grating is fixedly connected to the bottom of the condensing lens, and the silicon photovoltaic cell is fixedly connected to the center of the bottom end in the reading head;
the measuring member includes: the sleeve is nested on the left side of the measuring component, and the measuring reference grating is fixedly connected to the left side of the interior of the sleeve.
Preferably, the right side surface of the measurement reference grating is embedded in the reading head, and the measurement reference grating is arranged between the silicon photovoltaic cell and the indication grating.
Preferably, the silicon photovoltaic cell is formed on a substrate by selecting an Optek high-performance silicon photovoltaic cell.
Preferably, four detection windows are arranged at the top of the silicon photovoltaic cell, and the four detection windows are arranged in pairs in parallel.
Preferably, four windows matched with the silicon photovoltaic cell are arranged inside the indication grating.
Compared with the prior art, the beneficial effects of the utility model are that:
1. according to the single-light-source four-field scanning measuring device, the single-light-source infrared emission tube is arranged, photoelectric signal conversion is achieved in a single-light-source transmission type four-field scanning mode, signal fluctuation caused by differences of multiple light sources in the prior art is reduced, a better scanning signal can be obtained, stability and subdivision precision of a product signal are ensured, and the anti-interference capability of the product is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of a reading head according to the present invention;
fig. 3 is a schematic view of a partial structure of a silicon photovoltaic cell according to the present invention;
fig. 4 is an enlarged schematic structural view of a portion a in fig. 2 according to the present invention;
in the figure: the reading head 1, the single light source infrared emission tube 101, the condenser lens 102, the indication grating 103, the silicon photovoltaic cell 104, the measuring component 2, the sleeve 201 and the measuring reference grating 202.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a single light source four-field scanning measuring device comprises a reading head 1 and a measuring component 2, wherein the measuring component 2 is fixedly connected to the lower left side of the reading head 1,
the reading head 1 comprises: the reading head comprises a single light source infrared emission tube 101, a condenser 102, an indication grating 103 and a silicon photovoltaic cell 104, wherein the single light source infrared emission tube 101 is embedded in the center of the top of the reading head 1, the condenser 102 is fixedly connected to the bottom of the single light source infrared emission tube 101, the indication grating 103 is fixedly connected to the bottom of the condenser 102, and the silicon photovoltaic cell 104 is fixedly connected to the center of the bottom end in the reading head 1;
the measuring member 2 includes: the measuring component comprises a sleeve 201 and a measuring reference grating 202, wherein the sleeve 201 is arranged on the left side of the measuring component 2 in a nested mode, and the measuring reference grating 202 is fixedly connected to the inner left side of the sleeve 201.
Furthermore, the right side surface of the measurement reference grating 202 is embedded in the reading head 1, the measurement reference grating 202 is disposed between the silicon photovoltaic cell 104 and the indication grating 103, the measurement reference grating 202 and the indication grating 103 are detected by the silicon photovoltaic cell 104, and the indication grating 103 moves relative to the measurement reference grating 202 by a distance of one grating period, that is, a set of two sinusoidal signals with a phase difference of 90 ° is generated.
Furthermore, the silicon photovoltaic cell 104 is formed by selecting an Optek high-performance silicon photovoltaic cell on a substrate, the integration level is high, and a special die is used for processing, so that the consistency of the photoelectric device of the silicon photovoltaic cell and the circuit board is ensured.
Further, four detection windows are arranged at the top of the silicon photovoltaic cell 104, and the four detection windows are arranged in pairs in parallel.
Furthermore, four windows matched with the silicon photovoltaic cell 104 are arranged inside the indication grating 103, the silicon photovoltaic cell 104 corresponds to the four windows of the indication grating 103, light intensity signals transmitted by light from the indication grating 103 and the measurement reference grating 202 are received, four sine alternating electric signals are formed, the four signals are synthesized in pairs, signal intensity change caused by aging of electronic devices generating light sources is eliminated, and finally two sine alternating signals with the phase difference of 90 degrees are generated and serve as output signals of the grating ruler.
The single light source infrared emission tube 101 and the silicon photovoltaic cell 104 are both provided with a power supply matched with the single light source infrared emission tube 101 and the silicon photovoltaic cell 104, the single light source infrared emission tube 101 and the silicon photovoltaic cell 104 are both in signal connection with an external circuit control system, and stable photoelectric signals can be achieved through subdivision and shaping processing of the external circuit control system.
The working principle is as follows:
firstly, light is emitted to a condenser lens 102 through a single-light-source infrared emission tube 101, then the light is uniformly irradiated to an indication grating 103 through the condenser lens 102, then the light penetrates through the indication grating 103 and a measurement reference grating 202 to form four sine alternating electric signals, then the four sine alternating electric signals are subdivided and shaped through an external control system to achieve stable photoelectric signals, and finally, a user needs to regularly and comprehensively check and maintain the whole grating ruler.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A single light source four-field scanning measuring device comprises a reading head (1) and a measuring component (2), wherein the measuring component (2) is fixedly connected to the lower portion of the left side of the reading head (1), and is characterized in that:
the reading head (1) comprises: the reading head comprises a single light source infrared emission tube (101), a condenser (102), an indication grating (103) and a silicon photovoltaic cell (104), wherein the single light source infrared emission tube (101) is embedded in the center of the top of the reading head (1), the condenser (102) is fixedly connected to the bottom of the single light source infrared emission tube (101), the indication grating (103) is fixedly connected to the bottom of the condenser (102), and the silicon photovoltaic cell (104) is fixedly connected to the center of the bottom end in the reading head (1);
the measuring member (2) comprises: the measuring device comprises a sleeve (201) and a measuring reference grating (202), wherein the sleeve (201) is arranged on the left side of the measuring component (2) in a nested mode, and the measuring reference grating (202) is fixedly connected to the left side inside the sleeve (201).
2. A single light source four field scanning measuring device as defined in claim 1, wherein: the right side face of the measurement reference grating (202) is embedded in the reading head (1), and the measurement reference grating (202) is arranged between the silicon photovoltaic cell (104) and the indication grating (103).
3. A single light source four field scanning measuring device as defined in claim 1, wherein: the silicon photovoltaic cell (104) is formed on a substrate by selecting an Optek high-performance silicon photovoltaic cell.
4. A single light source four field scanning measuring device as defined in claim 1, wherein: four detection windows are arranged at the top of the silicon photovoltaic cell (104), and the four detection windows are arranged in pairs in parallel.
5. A single light source four field scanning measuring device as defined in claim 1, wherein: four windows matched with the silicon photovoltaic cell (104) are arranged in the indicating grating (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022976039.0U CN214666633U (en) | 2020-12-09 | 2020-12-09 | Single light source four-field scanning measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022976039.0U CN214666633U (en) | 2020-12-09 | 2020-12-09 | Single light source four-field scanning measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214666633U true CN214666633U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022976039.0U Active CN214666633U (en) | 2020-12-09 | 2020-12-09 | Single light source four-field scanning measuring device |
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| Country | Link |
|---|---|
| CN (1) | CN214666633U (en) |
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2020
- 2020-12-09 CN CN202022976039.0U patent/CN214666633U/en active Active
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