CN107576339B - A process and equipment for making photoelectric encoder code disc - Google Patents

Abstract

The invention discloses a process and equipment for manufacturing a code disc of a photoelectric encoder, which comprises the following steps: receiving a printing control instruction of the code wheel 3D model; controlling a thermal spray head to melt the metal material conveyed into the thermal spray head into a semi-liquid state, controlling the thermal spray head to move according to the printing control instruction, and simultaneously controlling the thermal spray head to extrude the metal material onto a supporting material of a forming base to print to form a layer of coded disc section; and printing the section of the code disc layer by layer from bottom to top until the required code disc is formed. The technical problem that the code channels are difficult to increase by increasing the scribing length of the code channels and reducing the distance between the code channels in the traditional code wheel manufacturing process so as to realize higher precision is solved.

Description

A process and equipment for making photoelectric encoder code disc

technical field

The invention relates to the field of code discs, in particular to a process and equipment for making a photoelectric encoder code disc.

Background technique

A code wheel is a digital encoder that measures angular displacement. It has the advantages of strong resolution, high measurement accuracy and reliable operation, and is one of the most commonly used displacement sensors for measuring the angular position of shafts. The code disc is divided into two types: absolute encoder and incremental encoder. The former can directly give the digital code corresponding to the angular position; Add and subtract to find the angular displacement.

With the rapid development of production in modern society, the accuracy requirements of encoders in the production process are getting higher and higher, and they need to achieve more accurate positioning. Photoelectric encoders have broad application prospects and have played a huge role in precision machine tool numerical control, accurate angle measurement and other fields. With the development of material science, the hardness of the photoelectric encoder code disk material has been greatly improved and improved, thus broadening the application field of the photoelectric encoder, and the application range under harsh and vibration conditions has also been expanded. As one of the more important components of the entire encoder, the code disc can only be accurately positioned with high precision, reducing errors and reducing the incidence of production accidents. With the development of industrial production, the precision requirements for code discs are getting higher and higher. In order to achieve higher accuracy, the code channel is usually increased by increasing the scribe length of the code channel and reducing the distance between the code channels. However, it is difficult to achieve this requirement in the traditional code disc manufacturing process.

SUMMARY OF THE INVENTION

The invention provides a process and equipment for making a photoelectric encoder code disc, which solves the difficulty of increasing the code track by increasing the scribe length of the code track and reducing the distance between the code tracks in the traditional code disc manufacturing process, thereby increasing the code track. Achieving higher precision technical issues.

The invention provides a process for making a photoelectric encoder code disc, comprising:

Receive the printing control command of the 3D model of the code wheel;

Control the thermal print head to melt the metal material transported into the thermal print head into a semi-liquid state, and control the thermal print head to move while controlling the thermal print head to extrude the metal material in the molding process according to the print control instruction. On the support material of the base, a layer of code disc section is formed by printing;

The cross section of the code wheel is printed layer by layer from bottom to top until the desired code wheel is formed.

Preferably,

The temperature of the molten metal material is controlled to fluctuate not more than 10% above and below the preset temperature.

Preferably,

The thickness of each layer of the code disc section is between 0.09 mm and 0.11 mm.

Preferably,

After printing the cross section of the code disc layer by layer from bottom to top until the required code disc is formed, it also includes:

After the code disc is cooled and formed for a preset time, the supporting material is dissolved, so that the code disc and the forming base are separated.

Preferably,

Before receiving the printing control command of the code wheel 3D model, it also includes:

Build the 3D model of the code disc and generate the corresponding printing control instructions.

Preferably,

Real-time monitoring is performed while printing the cross section of the code disc layer by layer from bottom to top, and the monitoring results are sent to the corresponding mobile terminal in real time.

Preferably,

Collect and save the printing data while printing the cross section of the code disc layer by layer from bottom to top.

The invention provides a device for making a photoelectric encoder code disc, including: a 3D printer;

The 3D printer is used for receiving printing control instructions of the 3D model of the code disc;

The 3D printer is used to control the thermal print head to melt the metal material conveyed into the thermal print head into a semi-liquid state, and control the thermal print head to move while controlling the thermal print head to move the thermal print head according to the printing control instruction. The metal material is extruded on the support material of the forming base, and a layer of code disc section is formed by printing;

The 3D printer is used to print the cross section of the code disc layer by layer from bottom to top until the desired code disc is formed.

Preferably,

The equipment for making a code disc of a photoelectric encoder further includes: a dissolving device for dissolving the supporting material after the code disc is cooled and formed for a preset time, so that the code disc and the forming base are separated.

Preferably,

The equipment for making a photoelectric encoder code disc also includes:

The modeling system is used to build the 3D model of the code disc and generate the corresponding printing control instructions;

The monitoring host is used to perform real-time monitoring while printing the cross-section of the code disc layer by layer from bottom to top, and send the monitoring results to the corresponding mobile terminal in real time;

Database for saving print data.

As can be seen from the above technical solutions, the present invention has the following advantages:

First receive the printing control command of the 3D model of the code disc, and then control the thermal nozzle to melt the metal material delivered to the thermal nozzle into a semi-liquid state, and control the thermal nozzle to move according to the printing control command, while controlling the thermal nozzle to squeeze the metal material. On the supporting material of the forming base, a layer of code disc section is formed by printing, and the code disc section is printed layer by layer from bottom to top until the required code disc is formed; the 3D printing technology is applied to the production process of the photoelectric encoder code disc, Compared with the traditional code disc manufacturing process, the degree of production automation is improved, the light transmission gap of the code disc is more uniform, the width and spacing between the code tracks are improved, and the optical signal passing rate is improved and the loss rate is reduced. Thereby, the measurement accuracy and resolution of the photoelectric encoder are improved, and the fine processing of the code disc is realized. The metal code disc is wear-resistant, has good thermal stability and high precision, and can adapt to various harsh working conditions.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic flowchart of an embodiment of a process for making a photoelectric encoder code disc provided by the present invention;

2 is a schematic flowchart of another embodiment of a process for making a photoelectric encoder code disc provided by the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of an apparatus for manufacturing a photoelectric encoder code disc provided by the present invention.

Detailed ways

The embodiments of the present invention provide a process and equipment for manufacturing a code disc of a photoelectric encoder, which solves the problem that the traditional code disc manufacturing process is difficult to increase the code track by increasing the scribe length of the code track and reducing the distance between the code tracks. , so as to achieve higher precision technical issues.

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1, which is a schematic flowchart of an embodiment of a process for manufacturing a photoelectric encoder code disc provided by the present invention;

The present invention provides an embodiment of a process for making a photoelectric encoder code disc, including:

S101, receiving a printing control instruction of the 3D model of the code disc.

The printing control command refers to the movement path control command, such as moving 2mm in the positive direction of the X axis, then 3mm in the Y axis, and also including the movement in the vertical direction, which can achieve precise positioning.

S102, the thermal print head is controlled to melt the metal material transported into the thermal print head into a semi-liquid state, and while the thermal print head is controlled to move according to the printing control instruction, the thermal print head is controlled to extrude the metal material on the support material of the forming base, and the printing is formed. A section of a code disc.

Usually, the forming base is placed in a coordinate system, and the thermal print head is controlled to move in the coordinate system according to the printing control command, and the metal material is extruded on the corresponding coordinate point.

Before extruding the metal material, the metal material needs to be delivered to the thermal nozzle, and the metal material is not supplied in stages during the extrusion process.

S103, print the cross section of the code disc layer by layer from bottom to top until a desired code disc is formed.

Because the cross section of the code wheel is stacked layer by layer, it is best to use technical materials with low expansion coefficients as metal materials.

Please refer to FIG. 2 , which is a schematic flowchart of another embodiment of a process for manufacturing a photoelectric encoder code disc provided by the present invention;

The present invention provides another embodiment of a process for making a photoelectric encoder code disc, including:

S201, establishing a 3D model of the code disc and generating corresponding printing control instructions.

First, it is necessary to establish a 3D model of the code disc, and then generate corresponding data from the cross-sectional profile information of the actual code disc to be produced, and then convert these data into corresponding control commands.

S202, receiving a printing control instruction of the 3D model of the code disc.

Step S202 is the same as step S101 and will not be repeated here.

S203, controlling the thermal print head to melt the metal material conveyed into the thermal print head into a semi-liquid state, and controlling the thermal print head to move while controlling the thermal print head to move the metal material on the support material of the forming base according to the printing control instruction, and printing the forming A section of a code disc.

In order to ensure the uniformity of the metal material, it is necessary to control the temperature of the molten metal material to fluctuate not more than 10% above and below the preset temperature, and the preset temperature is generally the optimum temperature.

In order to ensure that the technical materials between the layers can be seamlessly combined, and to ensure that the section of each layer of the code disc can be cooled quickly, it is necessary to control the output of the thermal nozzle, and to control the thickness of each layer of the code disc section at 0.09 mm to 0.11 mm.

S204, print the cross section of the code disc layer by layer from bottom to top until a required code disc is formed.

Step S204 is the same as step S103 and will not be repeated here.

S205, after the code disc is cooled for a preset time for forming, the supporting material is dissolved, so that the code disc and the forming base are separated.

The preset time can be set according to the actual needs, and it can be dissolved without waiting for the code disc to finish cooling, as long as it has no effect on the final formed code disc.

S206 , performing real-time monitoring while printing the cross-section of the code disc layer by layer from bottom to top, and sending the monitoring result to the corresponding mobile terminal in real time.

The monitoring results are sent to mobile terminals such as mobile phones and Pads in real time, which is convenient for monitoring the production status, so that in the event of an emergency, it can be dealt with in time and reduce losses.

S207 , while printing the cross section of the code disc layer by layer from bottom to top, printing data is collected and saved.

The print data includes but is not limited to the control command, the temperature change of the molten metal material, and the output of the thermal nozzle. The analysis and processing of these print data can provide a corresponding reference for the future code disc production.

Please refer to FIG. 3, which is a schematic structural diagram of an embodiment of a device for making a photoelectric encoder code disc provided by the present invention;

The present invention provides an embodiment of a device for making a photoelectric encoder code disc, including: a 3D printer 100 .

The 3D printer 100 is used for receiving the printing control instruction of the 3D model of the code disc;

The 3D printer 100 is used to control the thermal print head to melt the metal material conveyed into the thermal print head into a semi-liquid state, and control the thermal print head to move while controlling the thermal print head to extrude the metal material on the support material of the forming base according to the printing control instructions. , printing to form a layer of code disc section;

The 3D printer is also used to print the cross-section of the code disc layer by layer from bottom to top until the desired code disc is formed.

In addition, in another embodiment of the device for manufacturing a photoelectric encoder code disc provided by the present invention, the device for manufacturing a photoelectric encoder code disc further includes: a dissolving device 200, which is used to wait for the code disc to cool and form for a preset time , dissolve the supporting material, so that the code disc and the forming base are separated.

Further, the equipment for making the photoelectric encoder code disc also includes:

The modeling system 300 is used for establishing a 3D model of the code disc and generating corresponding printing control instructions.

The modeling system 300 includes, but is not limited to, a CAD modeling system and a Solidwork modeling system.

The monitoring host 400 is used to perform real-time monitoring while printing the cross-section of the code disc layer by layer from bottom to top, and send the monitoring results to the corresponding mobile terminal in real time.

The database 500 is used to save print data.

A delivery system 600 is used to deliver the metal material to the thermal showerhead.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A process for manufacturing a code disc of a photoelectric encoder is characterized by comprising the following steps:

receiving a printing control instruction of the code wheel 3D model;

controlling a thermal spray head to melt a metal material with a low expansion coefficient conveyed into the thermal spray head into a semi-liquid state, controlling the thermal spray head to move according to the printing control instruction, simultaneously controlling the thermal spray head to extrude the metal material onto a supporting material of a forming base, continuously supplying the metal material in the extrusion process, and printing to form a layer of coded disc section;

and printing the section of the code disc layer by layer from bottom to top until the required code disc is formed.

2. The process for manufacturing code disc of photoelectric encoder according to claim 1,

the temperature of the molten metal material is controlled to not more than 10% of fluctuation above and below the preset temperature.

3. The process for manufacturing code disc of photoelectric encoder according to claim 1,

the thickness of the section of each layer of the code disc is between 0.09 and 0.11 millimeters.

4. The process for manufacturing code disc of photoelectric encoder according to claim 1, wherein after the code disc section is printed layer by layer from bottom to top until the required code disc is formed, further comprising:

and after the coded disc is cooled and molded for a preset time, dissolving the supporting material, so that the coded disc is separated from the molded base.

5. The process for manufacturing the code disc of the photoelectric encoder according to claim 1, before receiving the printing control command of the 3D model of the code disc, the process further comprises the following steps:

and establishing a 3D code disc model and generating a corresponding printing control instruction.

6. The process for manufacturing code disc of photoelectric encoder according to claim 1,

and the monitoring is carried out in real time while the section of the code disc is printed layer by layer from bottom to top, and the monitoring result is sent to the corresponding mobile terminal in real time.

7. The process for manufacturing code disc of photoelectric encoder according to claim 1,

and collecting and storing printing data while printing the section of the code disc layer by layer from bottom to top.

8. An apparatus for manufacturing a code wheel of an optical-electrical encoder, comprising: a 3D printer;

the 3D printer is used for receiving a printing control instruction of the 3D code wheel model;

the 3D printer is used for controlling a thermal spray head to melt the metal material conveyed into the thermal spray head into a semi-liquid state, controlling the thermal spray head to move according to the printing control instruction, and simultaneously controlling the thermal spray head to extrude the metal material onto a supporting material of a forming base to print to form a layer of coded disc section;

the 3D printer is used for printing the section of the code disc layer by layer from bottom to top until the required code disc is formed.

9. The apparatus for making code disc of photoelectric encoder according to claim 8, further comprising: and the dissolving device is used for dissolving the supporting material after the coded disc is cooled and molded for a preset time, so that the coded disc is separated from the molding base.

10. The apparatus for making code disc of photoelectric encoder according to claim 8, further comprising:

the modeling system is used for establishing a coded disc 3D model and generating a corresponding printing control instruction;

the monitoring host is used for carrying out real-time monitoring while printing the section of the code disc layer by layer from bottom to top and sending a monitoring result to a corresponding mobile terminal in real time;

and the database is used for storing the printing data.

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