CN102855886B - Machining method for forming position reference signal magnetic area on the tape - Google Patents

Abstract

The invention discloses a technology enabling a magnetized tape to have a reference signal magnetic area selected to be used as a reference signal source. A magnetic pole distance of the reference signal magnetic area is different from an original main magnetic area magnetic pole distance on the magnetized tape, a magnetic field signal source for detecting different periods of components can be provided, and the magnetic field signal source is used as an origin point, a limit point or similar position of a relevant reference position. The technology for forming the reference signal magnetic area is that secondary magnetizing is conducted on a certain position selected on the magnetized tape through magnetizing pieces such as a magnet so as to change the magnetic pole distance of one portion of each original main magnetic area on the magnetic tape, and the reference signal magnetic area is formed.

Description

Processing method for forming position reference signal magnetic region on magnetic tape

technical field

The present invention is related to the technology of linear position measurement by magnetic field change, in particular to a processing method of a magnetic tape with a position reference signal magnetic region.

Background technique

The magnetic ruler technology for linear position measurement using the position increment and magnetic field change sensing technology is widely used on the position measuring device platform, and the magnetic tape used to provide the magnetic field change, generally speaking, it is in a continuous On the long strip body extending a proper length, different magnetic poles are sequentially arranged on one side surface of the strip body. Accordingly, when the sensing element is displaced along the long axis direction of the strip body, the The change of the magnetic field is sensed, but because it must provide regular changes in the magnetic field, the magnetic pole pitch on the magnetic tape is a fixed value, so that the magnetic tape cannot provide an appropriate sensing reference point as a reference signal for the position. Origin position, limit position or other similar positions.

In order to improve the deficiencies of the above-mentioned traditional technology, the technical content shown in Figure 1 is disclosed in the conventional technology. Specifically, it forms a regular optical signal area on a continuously extending strip 1, and reads the optical signal Obtain the corresponding signal, and arrange the independent magnet element 2 on one side of the tape body 1 to form a magnetic area that provides a reference position signal; or have the technical content shown in Figure 2, and simultaneously On the side surface, form a continuously equidistantly arranged position signal area 6, and a non-continuously equidistantly arranged reference signal area 7, and make each position signal area and the reference signal area have the same magnetic pole width, so as to provide sensing elements The purpose of sensing; accordingly, a signal source of a reference position can be provided through the reference signal magnetic area, so as to locate such as an origin position, an extreme position or other similar positions.

Although the above-mentioned conventional technology has achieved the function of providing a calibration reference point for the reference signal, its technology is not yet ideal, specifically:

In the conventional technology of adding an additional magnet, it is necessary to provide an independent magnetic field by installing an additional magnet element to enable the sensing element to be sensed, which is not convenient in setting, and lacks the flexibility to make different changes according to actual needs;

After the tape is subjected to the magnetic induction process through the barrier sheet, the position signal area and the reference signal area with the same magnetic pole width can be respectively formed on the same side surface, so that through the difference in the spatial position, it can provide two different However, since it needs to form a reference signal area with a different spatial position through the barrier sheet while imparting regular magnetic areas to the magnetic tape, it can only be carried out in the manufacturing end of the magnetic tape, but not in the use of the magnetic tape. It is up to the user to set the reference point of the reference position according to the actual needs. Similarly, it also lacks the function of flexibly adapting to the actual needs.

Contents of the invention

The object of the present invention is to provide a processing method for forming a position reference signal magnetic area on a magnetic tape, which allows users to set a reference reference point and form a magnetic area providing a reference signal at any position on the magnetic tape.

In order to achieve the above object, the present invention adopts the following technical solutions:

In order to obtain the magnetic tape with the magnetic field of the position reference signal, the present invention provides a processing method for forming the magnetic field of the position reference signal on the magnetic tape, which is characterized in that it comprises the following steps:

a. Take a strip tape with a plurality of main magnetic regions of equal magnetic pole width;

b. Select at least one reference point in the direction of the long axis of the tape;

c. Take a magnetizing part, adjoin to the side of the tape at the position of the reference point for magnetization, and cover a part of the main magnetic area to change the magnetic pole of the covered main magnetic area. A single magnetic pole, forming a reference signal magnetic region whose magnetic pole width is different from that of other magnetic poles in the main magnetic region;

d. Remove the magnetized part.

The magnetized part used in the step c is a permanent magnet.

In the step c, the magnetizing member covers a part of each of at least two main magnetic regions, so that the magnetic pole width of the reference signal magnetic region is larger than the magnetic pole width of other parts of the main magnetic regions that are not covered.

The advantages of the present invention are:

By means of the present invention, the position reference signal magnetic region can be formed at an appropriate position on the magnetized magnetic tape without providing an independent magnetic field signal source through an additional magnetic element as in the prior art. In other words, the technical content provided by the present invention The setting of the position reference signal magnetic area is done at the end of use, and does not need to be carried out at the manufacturing end of magnetic tape magnetization. In this way, it is not only convenient for the user end to independently select the setting position of the position reference signal magnetic area according to the needs of actual operating conditions , can also be set by the user itself, and the provision of the processing jig technology will help the user to define the reference point or limit position by himself, improving the convenience of implementation.

Description of drawings

Fig. 1 is a perspective view of a conventional technology.

Fig. 2 is a perspective view of another conventional technology.

Fig. 3 is a perspective view of a magnetic tape with a position reference signal magnetic field in a preferred embodiment of the present invention.

FIG. 4 is a perspective view of a processing jig used to form a magnetic field of a position reference signal on a magnetic tape in a preferred embodiment of the present invention.

Fig. 5 is a cross-sectional view of a preferred embodiment of the present invention along the line 5-5 in Fig. 4 .

6 is a schematic diagram of a processing method for forming a position reference signal magnetic region on a magnetic tape in a preferred embodiment of the present invention, which shows the state before the position reference signal magnetic region is formed.

FIG. 7 is a schematic diagram of a processing method for forming a position reference signal magnetic region on a magnetic tape in a preferred embodiment of the present invention, which shows the state of forming the position reference signal magnetic region.

FIG. 8 is a schematic diagram of a processing method for forming a position reference signal magnetic region on a magnetic tape in a preferred embodiment of the present invention, which shows the state of the position reference signal magnetic region after formation.

Detailed ways

Please refer to Fig. 3 to Fig. 6, a preferred embodiment of the present invention discloses a magnetic tape 10 with a position reference signal magnetic region, and utilizes a processing jig 20 to implement a specific position of a magnetized magnetic tape to form a position The magnetic field of the reference signal is used to form the processing method of the magnetic tape 10 with the magnetic field of the position reference signal.

First, please refer to Fig. 3, the magnetic tape 10 with the position reference signal magnetic zone includes a strip-shaped tape body 11, and a plurality of main magnetic regions 12 are arranged along the long axis direction of the tape body 11 in a manner of equal magnetic pole width. Sequentially arranged on one side of the belt body 11, and as shown in FIG. 3, the four main magnetic regions 12' in each of the main magnetic regions 12 are shorter than other main magnetic regions in length perpendicular to the magnetic pole pitch direction. The length of the magnetic zone 12 ", a reference signal magnetic zone 13 is arranged on one side of the strip body 11, and is adjacent to one side of each of the shorter four main magnetic zones 12' with one side, and Make the magnetic pole width of the reference signal magnetic area 13 larger than the magnetic pole width of each of the main magnetic areas 12, so as to provide a magnetic field signal source with a different cycle and form a specific sensing reference point, which can be used as the origin position and limit position as required or other similar reference locations to use.

Referring to Fig. 4 and Fig. 5 again, the processing jig 20 is mainly composed of a base 21, a sliding portion 22 and a magnetized part 23, wherein:

The seat 21 has a one-piece body 211, a positioning groove 212 with an opening facing downward is recessed on the bottom end surface of the body 211, and extends linearly to both side edges of the bottom end surface of the body 211. , a chute 213 extends vertically downward from the top side end surface of the body 211 and communicates with the positioning groove 212, a limiting bar hole 214 is provided on the front side plate 2111 of the body 211, and It communicates vertically with the chute 213 .

The sliding part 22 has a strip-shaped sliding body 221 whose section is complementary to the chute 213, which is slid in the chute 213, and can move up and down between an upper position and a lower position. When in the lower position, the bottom end of the sliding body 221 is adjacent to the opening end of the positioning groove 212, and when it is in the upper position, the bottom end of the sliding body 221 is away from the opening end of the positioning groove 212, and a stopper 222 It passes through the limiting bar hole 214 and is fixedly connected to the sliding body 221 at one end to limit the displacement stroke of the sliding body 221 .

The magnetizing member 23 is a sheet-shaped magnet, which is attached and fixed on the bottom end surface of the sliding body 221 with one side, so as to move with the displacement of the sliding body 221 .

Continue referring to FIGS. 6 to 8 , when the processing jig 20 is used to form a position reference signal magnetic field on a specific position of a magnetized magnetic tape, so as to form the magnetic tape 10 with the position reference signal magnetic field. Its steps include:

a. Take a magnetized elongated strip 11 with multiple main magnetic regions 12 of equal magnetic pole width.

b. Select a reference point in the direction of the long axis of the belt body 11 .

c. Use the open end of the positioning groove 212 of the processing jig 20 to accommodate the strip body 11 therein, and make the side strip surface with each of the main magnetic regions 12 face the sliding body 221 .

d. Make the processing jig 20 slide along the long axis direction of the belt body 11 to correct the position of the sliding body 221, so that the bottom side of the magnetizing part 23 is located above the selected reference point (as shown in the figure 6).

e. Make the sliding body 221 move down from the upper position to the lower position, so that the magnetizing part 23 approaches the upper edge of the belt body 11 at the selected reference point position, and covers one of the four main magnetic regions 12 respectively part (as shown in Figure 7 and Figure 8), so as to magnetize the covered area, thereby changing the magnetic pole width of the covered main magnetic area part area, and forming a single magnetic pole position reference signal magnetic area 13, and the position The magnetic pole width of the reference signal magnetic region 13 is greater than the magnetic pole width of each of the main magnetic regions 12 .

f. Move the sliding body 221 from the lower position to the upper position, and remove the processing jig 20 from the belt body 11 .

The position reference signal magnetic region 13 can be formed at an appropriate position on the magnetized magnetic tape by the above-mentioned technology, without the need to provide an independent magnetic field signal source through an additional magnetic element as in the prior art, in other words, the present invention provides The technical content is to set the position reference signal magnetic area 13 at the end of use, not at the manufacturing end of magnetic tape magnetization. In this way, it is not only convenient for the user end to independently select the position reference signal magnetic area according to the needs of actual operating conditions The setting position of 13 can also be set by the user, and the provision of the processing jig 20 technology will help the user to define the reference point or limit position by himself, improving the convenience of implementation.

The above are the preferred embodiments of the present invention and the technical principles used therefor. For those skilled in the art, without departing from the spirit and scope of the present invention, any technical solution based on the present invention Obvious changes such as equivalent transformation and simple replacement all fall within the protection scope of the present invention.

Claims (3)

1. A processing method for forming a position reference signal magnetic region on a magnetic tape, characterized in that it comprises the steps: a. Take a strip tape with a plurality of main magnetic regions of equal magnetic pole width; b. Select at least one reference point in the direction of the long axis of the tape; c. Take a magnetizing part, adjoin to the side of the tape at the position of the reference point for magnetization, and cover a part of the main magnetic area to change the magnetic pole of the covered main magnetic area. A single magnetic pole, forming a reference signal magnetic region whose magnetic pole width is different from that of other magnetic poles in the main magnetic region; d. Remove the magnetized part. 2 . The processing method for forming a position reference signal magnetic region on a magnetic tape according to claim 1 , wherein the magnetizing member used in the step c is a permanent magnet. 3 . 3. The processing method for forming a position reference signal magnetic region on a magnetic tape according to claim 1, characterized in that: in the step c, the magnetizing member covers a part of at least two main magnetic regions, so that the The magnetic pole width of the reference signal magnetic region is greater than the magnetic pole width of each uncovered other part of the main magnetic region.