Automatic testing device for magnetic encoder chip
By designing a detachable mounting plate and a test head that adapts to changes in magnetic field position, the limitations of existing magnetic encoder chips in terms of testing range and accuracy have been solved, achieving wide applicability and high-precision testing results.
Patent Information
- Application Number
- CN202422833048.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The existing magnetic encoder chip testing fixture cannot be replaced, resulting in a limited testing range and significant magnetic field interference, which fails to meet accuracy requirements.
A test head including N-pole and S-pole magnetic sheets was designed. It is driven by a stepper motor to realize the change of magnetic field position, and the fixture can be quickly replaced by a detachable mounting plate to adapt to the testing of chips of different specifications.
It enables testing of magnetic encoder chips with a wide testing range, high stability, and high precision, thus improving the applicability and accuracy of the tests.
Smart Images
Figure CN223565826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to test device technical field, especially in a kind of automatic testing device of magnetic encoder chip. BACKGROUND
[0002] Magnetic encoder generally refers to magnetic sensor, it is widely used in modern industry and electronic product to measure current, position, direction and other physical parameters by inducting magnetic field intensity, and the chip of magnetic encoder is the data processing core of magnetic encoder, to ensure the precision of magnetic encoder, often need test equipment to test the chip of magnetic encoder.
[0003] In prior art, when the chip of magnetic encoder is tested, the test fixture is generally unable to be replaced, so that the chip specification of test has locality, and the interference of magnetic field is larger, cannot satisfy the precision requirement of test, influence the final result of test.For the above problems, the following proposes a solution. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of automatic testing device of magnetic encoder chip, with the advantages of wide test range, stable test and high precision.
[0005] The above technical purpose of the utility model is realized by the following technical scheme:
[0006] A kind of automatic testing device of magnetic encoder chip, including base and chip body, the upper end of the base is fixed with test frame, the inner side of the test frame is installed with motor seat, the inner side of the motor seat is installed with stepper motor, the upper end of the test frame is fixed with support seat, the upper end of the support seat is fixed with test plate, installation slot is opened on the test plate, and the installation slot extends to the upper end of support seat, detachable mounting plate is arranged in the installation slot, the inner side of the mounting plate is provided with test seat, the upper end of the test seat is provided with test slot, containing groove is arranged in the support seat, and the containing groove is communicated with installation slot, the output shaft of the stepper motor is arranged in the containing groove, and the output shaft of the stepper motor is fixed with test head, the test head includes N pole magnetic sheet and S pole magnetic sheet, and is formed by N pole magnetic sheet and S pole magnetic sheet.
[0007] As preferred, a plurality of fixing grooves are opened on the mounting plate, a slidable moving column is arranged in each fixing groove, reset spring is installed at the bottom of the fixing groove, and the reset spring is connected between the one side of moving column and the inner side of fixing groove, the one side of moving column is fixed with fixed column, the inner side of support seat is provided with fixed hole, and the fixed column cooperates with fixed hole.
[0008] As preferred, the N pole magnetic sheet and S pole magnetic sheet are semicircular.
[0009] As preferred, the chip body is placed in the test slot.
[0010] As preferred, the test slot is directly above the containing slot.
[0011] The chip body is placed in the test slot, and the chip body is tested through the change of the magnetic field, and the mounting plate can be quickly replaced and installed, so that the appropriate jig is replaced to test the chip of different specifications, thereby increasing the use range of the device, and facilitating the popularization and use. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 Structure schematic view of the embodiment;
[0013] Fig. 2 Top view of the embodiment;
[0014] Fig. 3 Partial structure schematic view of the embodiment;
[0015] Fig. 4 Partial structure sectional view of the embodiment.
[0016] Fig. 1 is a base; 2 is a chip body; 3 is a test frame; 4 is a motor base; 5 is a stepping motor; 6 is a support base; 7 is a test plate; 8 is an installation slot; 9 is an installation plate; 10 is a test seat; 11 is a test slot; 12 is a containing slot; 13 is a test head; 14 is an N-pole magnetic sheet; 15 is an S-pole magnetic sheet; 16 is a fixed slot; 17 is a moving column; 18 is a return spring; 19 is a fixed column; 20 is a fixed hole. DETAILED DESCRIPTION
[0017] The following description is only a preferred embodiment of the utility model, and the protection scope is not limited to the embodiment only, and any technical solution belonging to the idea of the utility model should belong to the protection scope of the utility model. The same parts are indicated by the same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.
[0018] As Figs. 1 to 4As shown, an automatic testing device for a magnetic encoder chip includes a base 1 and a chip body 2, the upper end of the base 1 is fixedly provided with a testing frame 3, the upper end of the testing frame 3 is fixedly provided with a support seat 6, the upper end of the support seat 6 is fixedly provided with a testing plate 7, the inner side of the testing frame 3 is installed with a motor seat 4, the support seat 6 is provided with a containing groove 12, the inner side of the motor seat 4 is installed with a stepping motor 5, the output shaft of the stepping motor 5 penetrates the testing frame 3 and is located in the containing groove 12, the output shaft of the stepping motor 5 is fixedly provided with a testing head 13, the testing head 13 includes N-pole magnetic sheets 14 and S-pole magnetic sheets 15 and is formed by the N-pole magnetic sheets 14 and the S-pole magnetic sheets 15, a magnetic field can be generated by the N-pole magnetic sheets 14 and the S-pole magnetic sheets 15, and the testing head 13 can be driven to rotate by the rotation of the stepping motor 5, so that the N-pole magnetic sheets 14 and the S-pole magnetic sheets 15 can be simultaneously driven to rotate, so that the position of the magnetic field changes, and thus the testing of the chip body 2 can be realized by the change of the magnetic field, and the N-pole magnetic sheets 14 and the S-pole magnetic sheets 15 are both semicircular, so that the magnetic field can be more uniform and stable, and the testing accuracy can be further improved.
[0019] A mounting groove 8 is formed in the testing plate 7 and extends to the upper end of the support seat 6, the containing groove 12 is in communication with the mounting groove 8, a detachable mounting plate 9 is arranged in the mounting groove 8, a testing seat 10 is arranged on the inner side of the mounting plate 9, a testing groove 11 is arranged on the upper end of the testing seat 10, the chip body 2 is placed in the testing groove 11, and the testing groove 11 is located directly above the containing groove 12, the chip body 2 can be placed and tested through the testing groove 11, when different specifications of chips need to be tested, the mounting plate 9 can be quickly replaced and mounted, so that appropriate fixtures can be replaced to realize the testing of the chips, thereby increasing the use range of the device and facilitating the popularization and use.
[0020] A plurality of fixing grooves 16 are formed in the mounting plate 9, a movable column 17 is arranged in each fixing groove 16, a reset spring 18 is arranged at the bottom of the fixing groove 16 and connected between the inner side of the fixing groove 16 and one side of the movable column 17, a fixed column 19 is fixedly arranged on one side of the movable column 17, a fixed hole 20 is arranged on the inner side of the support seat 6 and matched with the fixed column 19, the user can pull a plurality of movable columns 17 to make the movable columns 17 slide backward along the fixing grooves 16, at this time, a plurality of reset springs 18 are extruded to generate elastic force, and the fixed column 19 can be simultaneously caused to be separated from the fixed hole 20, so that the mounting plate 9 can be detached, then the mounting plate 9 can be reinstalled, and the movable column 17 can be driven to return to the initial position by the reset action of the reset spring 18, so that the fixed column 19 is caused to be reinserted into the fixed hole 20, so that the mounting plate 9 can be fixedly installed, and finally the testing fixture can be quickly replaced and installed.
[0021] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the present application, and it should be understood that the above-described specific embodiments are merely specific embodiments of the present application and are not used to limit the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An automatic testing device for a magnetic encoder chip, characterized in that, The device includes a base (1) and a chip body (2). A test frame (3) is fixedly mounted on the upper end of the base (1). A motor mount (4) is installed on the inner side of the test frame (3). A stepper motor (5) is installed on the inner side of the motor mount (4). A support base (6) is fixedly mounted on the upper end of the test frame (3). A test plate (7) is fixedly mounted on the upper end of the support base (6). An installation groove (8) is provided on the test plate (7), and the installation groove (8) extends to the upper end of the support base (6). A detachable installation plate (9) is provided in the installation groove (8). A test seat (10) is provided on the inner side of (9). A test groove (11) is provided at the upper end of the test seat (10). A receiving groove (12) is provided in the support seat (6). The receiving groove (12) is connected to the mounting groove (8). The output shaft of the stepper motor (5) passes through the test frame (3) and is located in the receiving groove (12). A test head (13) is fixed on the output shaft of the stepper motor (5). The test head (13) includes an N-pole magnetic sheet (14) and an S-pole magnetic sheet (15). The test head (13) is formed by the N-pole magnetic sheet (14) and the S-pole magnetic sheet (15).
2. The automatic testing device for a magnetic encoder chip according to claim 1, characterized in that, The mounting plate (9) has several fixing slots (16), and each fixing slot (16) is provided with a slidable movable column (17). A return spring (18) is installed at the bottom of the fixing slot (16), and the return spring (18) is connected between one side of the movable column (17) and the inner side of the fixing slot (16). A fixing column (19) is fixed on one side of the movable column (17). A fixing hole (20) is provided on the inner side of the support base (6), and the fixing column (19) cooperates with the fixing hole (20).
3. The automatic testing device for a magnetic encoder chip according to claim 2, characterized in that, Both the N-pole magnetic sheet (14) and the S-pole magnetic sheet (15) are semi-circular.
4. The automatic testing device for a magnetic encoder chip according to claim 3, characterized in that, The chip body (2) is placed in the test slot (11).
5. An automatic testing device for a magnetic encoder chip according to claim 4, characterized in that, The test slot (11) is located directly above the receiving slot (12).