Grating reading head debugging tool

Abstract

The utility model discloses a grating reading head debugging tool which comprises a wire main body, one end of the wire main body is used for being connected with a signal output end of a grating reading head, and the other end of the wire main body is used for being connected with a signal input end of debugging equipment. The wire main body comprises a first wire core and a second wire core; the signal output end of the first wire core is connected with a second connector, and the signal input end of the first wire core is a free end and is used for being connected with the signal output end of a grating reading head. The signal input end of the second wire core is connected with the first connector, and the signal output end of the second wire core is connected with the second connector. According to the utility model, the testing of two grating reading heads can be realized, the testing cost is saved, and the testing operation is convenient.

Description

Technical Field

[0001] This utility model relates to a grating reading head debugging fixture, belonging to the field of wire and cable technology. Background Technology

[0002] As a precision angle measurement system, the angle measurement accuracy of the grating ring and the grating readhead is closely related to their installation position. If the two are not properly matched, the accuracy will be greatly affected, or even the system will not function properly. Therefore, in order to ensure the angle measurement performance of the grating system, the relative position between the grating ring and the readhead needs to be precisely adjusted. The installation position is ensured to meet the requirements by observing the laser waveform of the readhead through test leads.

[0003] Currently, there are two major problems with the debugging of domestically produced grating rings and grating read heads (hereinafter referred to as gratings). Firstly, there is low safety. The process involves soldering stripped test leads onto the connector (an internal connector for the grating signal's first signal transfer into the system) to the grating read head's lead wires, and then manually winding the wires to connect to the debugging adapter box. This method cannot guarantee 100% accurate point correspondence between the test leads and the adapter box, and the wire cores are exposed. Changing the lead wires of grating read heads with different housings requires multiple manual disconnections of the test leads from the debugging adapter box, increasing the possibility of misoperation. The grating read head has two product states: 1. The grating read head is not soldered to the main unit; the read head wires are connected one-to-one to the grating adapter box, which carries the risk of incorrect connection; 2. The read head is soldered to the main unit; the read head test leads are unsoldered, and then debugging is performed according to the method for state 1.

[0004] Secondly, there is the issue of foreign matter control: test lines soldered before product debugging need to be desoldered and removed after debugging is completed. This process can easily generate foreign matter such as solder dross, which is difficult to remove from the product and poses a safety and quality hazard. Utility Model Content

[0005] The present invention aims to address the above-mentioned problems by providing a grating reading head debugging fixture that facilitates the debugging and connection of two product states of the grating reading head.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A grating readout head debugging fixture includes a wire body, one end of which is connected to the signal output terminal of the grating readout head, and the other end of which is connected to the signal input terminal of a debugging device. The wire body includes a first wire core and a second wire core. The signal output terminal of the first wire core is connected to a second connector, and the signal input terminal of the first wire core is a free end for connecting to the signal output terminal of the grating readout head. The signal input terminal of the second wire core is connected to the first connector, and the signal output terminal of the second wire core is connected to the second connector.

[0008] Therefore, when the grating reading head is not soldered to the complete unit, the first wire core is connected to the signal output terminal of the grating reading head, and the signal output terminal of the first wire core is connected to the signal input terminal of the debugging adapter box through the second connector, thereby realizing communication and debugging of the grating reading head; when the grating reading head has been soldered to the complete unit, the first connector on the second wire core is connected to the signal output terminal of the grating reading head, and the second connector at the other end of the second wire core is connected to the signal input terminal of the debugging adapter box, thereby realizing communication and debugging of the grating reading head; by using a special fixture to replace the soldered test line method currently used in grating debugging, a test fixture with a separate lead wire from the connector and a firm connection to the inertial navigation system is used, reducing the number of times the solder pads are used, reducing the risk of damaging the solder pads or causing accidental short circuits during operation, and the same cable can be used to test two types of grating reading heads.

[0009] Based on the embodiments of this utility model, further optimizations can be made to this utility model. The optimized technical solutions are as follows:

[0010] In one specific embodiment, the first connector includes a first housing, and a first control board is disposed inside the first housing; the second connector includes a second housing, and a second control board is disposed inside the second housing.

[0011] In one specific embodiment, the signal output terminals of both the first wire core and the second wire core are connected to the second control board.

[0012] To facilitate the connection of the wiring harness, in one specific embodiment, the first control board is provided with a terminal block, and the input end of the second wire core is connected to the terminal block.

[0013] In one specific embodiment, the terminal block is a push-button terminal block.

[0014] In one specific embodiment, the first core includes four first data transmission cores.

[0015] In one specific embodiment, the second core includes four second data transmission cores and two power supply cores.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1) The grating reading head debugging fixture of this utility model can test two types of grating reading heads with one tool, saving testing costs and facilitating testing operations.

[0018] 2) The grating reading head debugging fixture of this utility model replaces the welding test line method currently used in grating debugging with a special fixture. Instead, it is replaced by a test fixture with a separate lead wire from the connector and a firm connection to the inertial navigation system. This reduces the number of times the solder pads are used and lowers the risk of damaging the solder pads or causing accidental short circuits during operation.

[0019] 3) When using the grating adjustment device to adjust the grating, the grating reading head adjustment fixture of this utility model eliminates the need to specially lead test lines from the solder pads, avoids the use of a soldering iron to move the solder joints, simplifies the measurement operation, enhances the safety of the grating adjustment process, and reduces the probability of quality accidents. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the grating reading head debugging fixture of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal connection structure of the grating reading head debugging fixture of this utility model;

[0022] Figure 3 This is the circuit schematic diagram of this utility model.

[0023] In the figure

[0024] 1-First connector; 11-First housing; 12-First control board; 2-Second connector; 21-Second housing; 22-Second control board; 3-Wire body; 31-First wire core; 32-Second wire core; 4-Terminal; 5-First data transmission wire core; 6-Second data transmission wire core; 7-Two power supply wire cores. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0026] like Figures 1-3As shown, the grating readhead debugging fixture of this embodiment includes a wire body 3. One end of the wire body 3 is connected to the signal output end of the grating readhead, and the other end of the wire body 3 is connected to the signal input end of the debugging device. The wire body 3 includes a first wire core 31 and a second wire core 32. The signal input end of the first wire core 31 is a free end for connecting to the signal output end of the grating readhead, and the signal output end of the first wire core 31 is connected to a second connector 2. The signal input end of the second wire core 32 is connected to the first connector 1, and the signal output end of the second wire core 32 is connected to the second connector 2.

[0027] The first connector 1 includes a first housing 11, and a first control board 12 is disposed inside the first housing 11; the second connector 2 includes a second housing 21, and a second control board 22 is disposed inside the second housing 21.

[0028] The signal output terminals of the first wire core 31 and the second wire core 32 are both connected to the second control board 22. The first wire core 31 includes four first data transmission wire cores 5, and the second wire core 32 includes four second data transmission wire cores 6 and two power supply wire cores 7. Ten test wires are led out from the wire body 3, corresponding to the three power supply channels of the inner frame, outer frame and grating reading head on the indexing mechanism, respectively. There are eight test wires for the four signal points MA+, MA-, SLO+ and SLO- of the inner frame and outer frame channels, and two test wires for power supply 5V and GND.

[0029] When the grating reading head is not soldered to the whole machine, the signal input end of the first wire core 31 is connected to the signal output end of the grating reading head. Since the grating reading head is not soldered to the whole machine at this time, the signal input end of the first wire core 31 is a free end, and the four first data transmission wire cores 5 are soldered to the signal output end of the grating reading head. Then, the signal output end of the first wire core 31 is connected to the signal input end of the debugging adapter box through the second connector 2, thereby realizing communication and debugging of the grating reading head.

[0030] When the grating reading head has been soldered to the whole machine, the first connector 1 on the second wire core 32 is connected to the signal output terminal of the grating reading head, and the second connector 2 at the other end of the second wire core 32 is connected to the signal input terminal of the debugging adapter box, thereby realizing communication and debugging of the grating reading head.

[0031] Therefore, by using specially designed fixtures to replace the soldered test lines currently used in grating debugging, and instead using a test fixture with a separate lead wire from the connector that is securely connected to the inertial measurement unit, the number of times the solder pads are used is reduced, and the risk of damaging the solder pads or causing accidental short circuits during operation is lowered. The same cable can be used to test two types of grating reading heads.

[0032] The first control board 12 is equipped with a terminal block 4. The signal input terminal of the second wire core 32 is connected to the terminal block 4, which is a push-button type terminal block. The four second data transmission wire cores 6 and two power wire cores 7 of the second wire core 32 are all connected to the first control board 12 via the terminal block 4. Therefore, when the second connector 2 or a wire core is damaged, it is easy to replace the wire core or connector, improving work efficiency and saving testing costs.

[0033] During use, operators need to select electrical connectors based on the grating's definition of each channel point on the motor control board. For example... Figure 1-3 As shown in the diagram, after assembling the measuring device according to the requirements, inspect it to ensure that each point conforms to the definition. The inspected measuring device can then be connected to the indexing mechanism for use.

[0034] This embodiment provides a grating reading head debugging fixture that can measure all channels of a rotary transformer. The measurement process does not require the use of a soldering iron to move the solder joints, and the measurement process is highly safe, reducing the potential for quality accidents in the production process and improving production efficiency.

[0035] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A grating reading head adjustment fixture, characterized in that: It includes a wire body (3), one end of which is connected to the signal output terminal of the grating reading head, and the other end of which is connected to the signal input terminal of the debugging equipment; The main body of the line (3) includes a first wire core (31) and a second wire core (32); the signal input end of the first wire core (31) is a free end for connecting to the signal output end of the grating reading head, and the signal output end of the first wire core (31) is connected to a second connector (2); the signal input end of the second wire core (32) is connected to a first connector (1), and the signal output end of the second wire core (32) is connected to the second connector (2).

2. The grating reading head adjustment fixture according to claim 1, characterized in that: The first connector (1) includes a first housing (11), and a first control board (12) is disposed inside the first housing (11); the second connector (2) includes a second housing (21), and a second control board (22) is disposed inside the second housing (21).

3. The grating reading head adjustment fixture according to claim 2, characterized in that: The signal output terminals of the first wire core (31) and the second wire core (32) are both connected to the second control board (22).

4. The grating reading head adjustment fixture according to claim 2, characterized in that: The first control board (12) is provided with a terminal block (4), and the signal input end of the second wire core (32) is connected to the terminal block (4).

5. The grating readout head adjustment fixture according to claim 4, characterized in that: The terminal block (4) is a push-button terminal block.

6. The grating readout head adjustment fixture according to any one of claims 1-5, characterized in that: The first core (31) includes four first data transmission cores (5).

7. The grating readout head adjustment fixture according to any one of claims 1-5, characterized in that: The second core (32) includes four second data transmission cores (6) and two power supply cores (7).

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