Static and dynamic triaxial force performance testing device of linear motor

Abstract

The invention relates to the field of testing equipment, and provides a static and dynamic triaxial force performance testing device for a linear motor, which comprises a rack and the like, two sliding rails are fixedly arranged at the top of the rack, a sliding table is arranged on the two sliding rails in a sliding mode, an air cylinder is installed on the lower surface of the sliding table, a cushion block is arranged at the bottom end of an output shaft of the air cylinder, and when the output shaft of the air cylinder extends, pressure can be applied to a sliding base of the linear motor to be tested through the cushion block. Through the arrangement of the air cylinder, the cushion block and the positioning detection mechanism, the load of the linear motor can be changed through the air cylinder and the cushion block, the positioning accuracy of the linear motor during reciprocating operation under different loads is detected through the two dial indicators I and the two sensors I, analysis is conducted in combination with multiple sets of data, and the accuracy of the linear motor is improved. Therefore, the dynamic performance condition of the linear motor is obtained, and the final test result is closer to the actual performance of the linear motor.

Description

Technical Field

[0001] The invention relates to the field of testing equipment, and in particular to a static and dynamic three-axis force performance testing device for a linear motor. Background Art

[0002] Linear motor testing is a systematic project that aims to confirm whether the various performance indicators of the linear motor meet the design requirements and actual application needs. It includes static parameter testing and dynamic performance testing. The dynamic performance test is the process of evaluating the various performance indicators of the linear motor in motion, and mainly focuses on the real-time performance of the motor under actual working conditions.

[0003] Chinese patent CN110715805A discloses a test bench and a test method for a small linear motor. The bench comprises a base, a lower clamping plate and an upper clamping plate which are arranged in parallel from bottom to top, wherein the base and the lower clamping plate are connected to each other through a first guide rod fixing mechanism, and the lower clamping plate and the upper clamping plate are connected to each other through a second guide rod fixing mechanism; the lower clamping plate is provided with: a first guide rod hole for the first guide rod fixing mechanism to pass through, and the small linear motor to be tested is clamped and arranged between the upper clamping plate and the lower clamping plate; the first guide rod fixing mechanism is adjusted The spacing distance between the lower clamping plate and the base is adapted to the height of the small linear motor to be tested; the second guide rod hole is for the bottom end of the second guide rod mechanism to pass through, including multiple groups of bolt holes of the same size but at different distances from the center of the lower clamping plate, to adapt to the length and width of the small linear motor to be tested. However, this patent still has some shortcomings during use. The test items of the equipment are not comprehensive, especially when performing dynamic testing on the linear motor, it is impossible to test the positioning accuracy of the linear motor during operation, resulting in a large difference between the test results and the actual performance of the linear motor. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a static and dynamic three-axis force performance testing device for a linear motor, which can make the test results more accurate and comprehensive.

[0005] Technical solution: A static and dynamic three-axis force performance test device for a linear motor, comprising a frame, a slide rail, a slide table, a cylinder, a pad and a positioning detection mechanism, wherein two slide rails are fixedly arranged on the top of the frame, a slide table is slidably arranged on the two slide rails, a cylinder is installed on the lower surface of the slide table, a pad is arranged at the bottom end of the output shaft of the cylinder, and when the output shaft of the cylinder is extended, pressure can be applied to the slide seat of the linear motor to be tested through the pad; the positioning detection mechanism comprises a mounting table, a micrometer I, a trigger rod I, a sensor I and a pressure detection The device comprises a mounting platform fixedly provided on the left and right inner walls of the frame, a micrometer I is installed on the two mounting platforms, and the mounting directions of the two micrometers I are opposite, a trigger rod I is provided on the two micrometers I, the trigger rod I is connected to the pointer of the micrometer I, when the trigger rod I moves, the pointer of the micrometer I will also rotate accordingly, a sensor I is installed on the ends of the two trigger rods I that are close to each other, and the slide seat of the linear motor to be tested will contact the two sensors I when it slides, and a pressure detector is installed in the cushion block.

[0006] In addition, it is particularly preferred that the device also includes a vibration detection mechanism, which includes a guide frame, a slide plate, a micrometer II, a trigger rod II and a sensor II, and two guide frames are symmetrically arranged on the left inner wall of the frame, and slide plates are arranged on both guide frames, and micrometer II is installed on each of the two slide plates, and the installation directions of the two micrometer II are opposite, and trigger rod II is arranged on both micrometer II, and the trigger rod II is connected to the pointer of the micrometer II, and sensor II is installed on the ends of the two trigger rods II that are close to each other.

[0007] In addition, it is particularly preferred that the vibration detection mechanism also includes a screw, the slide plate is slidably matched with the corresponding guide frame, and the two guide frames are both provided with a screw that is rotatably arranged thereon. The screw and the slide plate on the same guide frame are rotatably connected via a thread, and rotating the screw can adjust the position of the slide plate and make the sensor II fit the side wall of the linear motor to be tested.

[0008] In addition, it is particularly preferred that the device also includes an alarm mechanism, which includes a support bar, an infrared transmitter and a warning light. Two support bars are slidably arranged on the two slide rails, infrared transmitters are installed on the two support bars, and warning lights are arranged on the tops of the two support bars. The infrared transmitter and warning light on the same support bar are matched with each other.

[0009] In addition, it is particularly preferred that scales are provided on both of the slide rails, and a pair of fastening bolts are provided on each of the two support bars, and tightening the fastening bolts can limit the position of the support bar on the slide rail.

[0010] In addition, it is particularly preferred that the two infrared emitters are used in conjunction with the sensor I on the same side thereof, and when the positioning error of the slide of the linear motor to be tested is too large, the infrared emitter gives a warning through the warning light.

[0011] Furthermore, it is particularly preferred that the two infrared transmitters can respectively warn when the positioning stroke of the slide of the linear motor to be tested is too much greater than a standard value and when the positioning stroke is too much less than a standard value.

[0012] In addition, it is particularly preferred that the present device also includes a low-temperature detection mechanism, which includes a semiconductor chip I, a semiconductor chip II and a cable, wherein the semiconductor chip I and the semiconductor chip II are both detachably installed, the semiconductor chip I is arranged on the side wall of the linear motor to be detected, the semiconductor chip II is arranged on the slide seat of the linear motor to be detected, and the semiconductor chip I and the semiconductor chip II are connected by the cable.

[0013] Beneficial effects: 1. The present invention can change the load of the linear motor through the cylinder and the cushion block through the arrangement of the cylinder, the cushion block, and detect the positioning accuracy of the linear motor during reciprocating operation under different loads through two micrometers I and two sensors I, and analyze multiple sets of data to obtain the dynamic performance of the linear motor, so that its final test result is closer to its actual performance; 2. Through the setting of the vibration detection mechanism, the screw can be rotated to change the position of the slide according to the model of the linear motor, so that the sensor II can fit the side wall of the linear motor. When the linear motor is running, its vibration amplitude can be monitored, and the stability of the linear motor during operation can be analyzed through the obtained data, so that the final detection result is more comprehensive; 3. Through the setting of the alarm mechanism, when the positioning accuracy of the linear motor is tested, the position of the support bar and the infrared transmitter can be adjusted in advance. During the test, when the positioning stroke of the linear motor is too large or too small, the warning light will be used to prompt it, and it can be judged as a defective product without data analysis, thereby speeding up the detection efficiency.

[0014] 4. By setting up a low-temperature detection mechanism, the linear motor is cooled using semiconductor chip I and semiconductor chip II, and is operated at the same time, thereby obtaining the working performance of the linear motor in extreme environments, further improving the accuracy and comprehensiveness of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a partial structural schematic diagram of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the positioning detection mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the cushion block and the pressure detector of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the vibration detection mechanism of the present invention.

[0021] Figure 6 It is a cross-sectional view of the vibration detection mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the support bar and the infrared emitter of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the alarm mechanism of the present invention.

[0024] Fig. 9 It is a structural schematic diagram of the low temperature detection mechanism of the present invention.

[0025] In the figure: 1. rack, 11. sample machine, 2. slide rail, 21. slide table, 22. cylinder, 23. pad, 3. positioning detection mechanism, 31. mounting table, 32. micrometer Ⅰ, 33. trigger rod Ⅰ, 34. sensor Ⅰ, 35. pressure detector, 4. vibration detection mechanism, 41. guide frame, 42. slide plate, 43. micrometer Ⅱ, 44. trigger rod Ⅱ, 45. sensor Ⅱ, 46. screw, 5. alarm mechanism, 51. support bar, 52. infrared transmitter, 53. warning light, 54. fastening bolt, 6. low temperature detection mechanism, 61. semiconductor chip Ⅰ, 62. semiconductor chip Ⅱ, 63. cable. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 4A static and dynamic three-axis force performance test device for a linear motor includes a frame 1, a slide rail 2, a slide table 21, a cylinder 22, a cushion block 23 and a positioning detection mechanism 3, wherein the positioning detection mechanism 3 includes a mounting table 31, a micrometer I 32, a trigger rod I 33, a sensor I 34 and a pressure detector 35. Two slide rails 2 are fixedly arranged on the top of the frame 1, and scales are arranged on the two slide rails 2. A slide table 21 is slidably arranged between the two slide rails 2. A cylinder 22 is installed on the lower surface of the slide table 21. The cylinder The output shaft of the cylinder 22 is vertically downward, and a pad 23 is provided at the end of the output shaft. After the sample machine 11 is placed on the rack 1, the cylinder 22 can be started to extend its output shaft, so that the pad 23 contacts the slide seat of the sample machine 11, and the cylinder 22 applies pressure to the slide seat of the sample machine 11, thereby changing the load of the sample machine 11. When the sample machine 11 is started later, while its slide seat slides back and forth left and right, the slide 21, the cylinder 22 and the pad 23 will also slide synchronously. A mounting platform 31 is fixed by bolts, and a micrometer I 32 is installed on each of the two mounting platforms 31, and the installation directions of the two micrometers I 32 are opposite. A trigger rod I 33 is provided on each of the two micrometers I 32, and sensors I 34 are arranged on the ends of the two trigger rods I 33 close to each other. When the slide of the sample machine 11 slides back and forth, the slide will contact the two sensors I 34 respectively when it reaches the left and right ends of the sample machine 11, and squeeze the sensors I 34, so that the sensors I 34 and the trigger rod I The trigger rod Ⅰ33 moves toward the direction of the micrometer Ⅰ32. Since the trigger rod Ⅰ33 is connected to the pointer of the micrometer Ⅰ32, when the trigger rod Ⅰ33 approaches the micrometer Ⅰ32, the reading of the micrometer Ⅰ32 will increase. The user can analyze the positioning accuracy of the sample machine 11 during operation through the reading of the micrometer Ⅰ32 and the pressure exerted on the sensor Ⅰ34. A pressure detector 35 is installed in the cushion block 23. The pressure detector 35 can be used to more accurately adjust the load of the sample machine 11 during the test.

[0028] See also Figure 1 , Figure 5 and Figure 6In the embodiment of the present invention, a vibration detection mechanism 4 is also included. The vibration detection mechanism 4 includes a guide frame 41, a slide plate 42, a micrometer II 43, a trigger rod II 44, a sensor II 45 and a screw 46. Two guide frames 41 are symmetrically arranged on the left inner wall of the frame 1. The slide plates 42 are slidably arranged on the two guide frames 41, and the two guide frames 41 are both provided with screws 46 when rotating and penetrating. The screw 46 is connected to the slide plate 42 on the same guide frame 41 through a threaded rotation. The clockwise rotation of the screw 46 can make the slide plate 42 slide on the guide frame 41 and approach the sample. On the side wall of the sample machine 11, micrometer gauges Ⅱ43 are installed on two slide plates 42, the installation directions of the two micrometer gauges Ⅱ43 are opposite, and trigger rods Ⅱ44 are provided on the two micrometer gauges Ⅱ43. A sensor Ⅱ45 is installed on the end of the trigger rod Ⅱ44 close to the sample machine 11. The two sensors Ⅱ45 are initially attached to the front and rear side walls of the sample machine 11 respectively. When the sample machine 11 is tested for reciprocating operation, the sensor Ⅱ45 will monitor the vibration amplitude of its body and read the data through the micrometer gauge Ⅱ43. Finally, the data analysis will be used to determine whether its stability during operation meets the standards.

[0029] See also Figure 1 , Figure 7 and Figure 8 In the embodiment of the present invention, an alarm mechanism 5 is also included. The alarm mechanism 5 includes a support bar 51, an infrared transmitter 52, a warning light 53 and a fastening bolt 54. Two support bars 51 are slidably arranged on the two slide rails 2. The two support bars 51 are respectively located on the left and right sides of the slide 21, and a pair of fastening bolts 54 are respectively arranged on the two support bars 51. The support bar 51 can be moved to a specified position through the scale on the slide rail 2, and the position of the support bar 51 can be fixed by tightening the fastening bolts 54. Infrared transmitters 52 are installed at the bottom of the two support bars 51, and warning lights 53 are arranged at the top of the two support bars 51. The infrared transmitter 52 and the warning light 53 on the same support bar 51 are matched with each other.

[0030] In the embodiment of the present invention, the positions of the two support bars 51 are first adjusted so that the infrared emitter 52 on the left can emit infrared rays to the leftmost position allowed within the error range, and the infrared emitter 52 on the right can emit infrared rays to the leftmost position allowed within the error range. Then, the sample machine 11 is started to make its slide reciprocate left and right. When the positioning accuracy of its slide meets the standard, only the infrared emitter 52 on the right and the warning light 53 will be triggered. When the positioning stroke of its slide is too long, both sets of infrared emitters 52 and the warning light 53 will be triggered. When the positioning stroke of its slide is too short, both sets of infrared emitters 52 and the warning light 53 will not be triggered. In this way, defective products can be quickly judged and the detection efficiency is improved.

[0031] See also Figure 1 and Fig. 9 In the embodiment of the present invention, a low-temperature detection mechanism 6 is also included. The low-temperature detection mechanism 6 includes a semiconductor chip I 61, a semiconductor chip II 62 and a cable 63. The semiconductor chip I 61 and the semiconductor chip II 62 are both detachably installed, and the semiconductor chip I 61 and the semiconductor chip II 62 are connected by a cable 63. When the positioning accuracy and other detections of the sample machine 11 meet the standards, the semiconductor chip I 61 can be installed on the front and rear side walls of the sample machine 11, and the semiconductor chip II 62 can be installed on the slide seat of the sample machine 11. The sample machine 11 is cooled by the semiconductor chip I 61 and the semiconductor chip II 62, and the sample machine 11 is tested in extreme environments under low temperature conditions to further improve the comprehensiveness of the detection.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A static and dynamic three-axis force performance test device for a linear motor, characterized in that: The invention comprises a frame (1), a slide rail (2), a slide table (21), a cylinder (22), a cushion block (23) and a positioning detection mechanism (3), wherein two slide rails (2) are fixedly arranged on the top of the frame (1), a slide table (21) is slidably arranged on the two slide rails (2), a cylinder (22) is installed on the lower surface of the slide table (21), a cushion block (23) is arranged at the bottom end of the output shaft of the cylinder (22), and when the output shaft of the cylinder (22) is extended, pressure can be applied to the slide seat of the linear motor to be tested through the cushion block (23); The positioning detection mechanism (3) comprises a mounting platform (31), a dial gauge I (32), a trigger rod I (33), a sensor I (34) and a pressure detector (35). The mounting platforms (31) are fixedly arranged on the left and right inner walls of the frame (1). The two mounting platforms (31) are both mounted with dial gauges I (32), and the mounting directions of the two dial gauges I (32) are opposite. The two dial gauges I (32) are both mounted with trigger rods I (33). The trigger rods I (33) are connected to the pointers of the dial gauges I (32). When the trigger rods I (33) move, the pointers of the dial gauges I (32) also rotate accordingly. The ends of the two trigger rods I (33) that are close to each other are both mounted with sensors I (34). When the slide seat of the linear motor to be tested slides, it will contact the two sensors I (34). The pressure detector (35) is installed in the cushion block (23).

2. A static and dynamic three-axis force performance testing device for a linear motor according to claim 1, characterized in that: The device further comprises a vibration detection mechanism (4), the vibration detection mechanism (4) comprising a guide frame (41), a slide plate (42), a micrometer II (43), a trigger rod II (44) and a sensor II (45), two guide frames (41) are symmetrically arranged on the left inner side wall of the frame (1), the two guide frames (41) are each provided with a slide plate (42), a micrometer II (43) is respectively installed on the two slide plates (42), and the installation directions of the two micrometer IIs (43) are opposite, the two micrometer IIs (43) are each provided with a trigger rod II (44), the trigger rod II (44) is connected to the pointer of the micrometer II (43), and the sensor II (45) is installed on the ends of the two trigger rods II (44) close to each other.

3. A static and dynamic three-axis force performance testing device for a linear motor according to claim 2, characterized in that: The vibration detection mechanism (4) further comprises a screw (46), the slide plate (42) is slidably matched with the corresponding guide frame (41), the two guide frames (41) are both provided with a screw (46) which is rotatably penetrated, the screw (46) is rotatably connected to the slide plate (42) on the same guide frame (41) via a thread, and the position of the slide plate (42) can be adjusted by rotating the screw (46), so that the sensor II (45) is in contact with the side wall of the linear motor to be tested.

4. A static and dynamic three-axis force performance testing device for a linear motor according to claim 3, characterized in that: The device further comprises an alarm mechanism (5), the alarm mechanism (5) comprising a support bar (51), an infrared transmitter (52) and a warning light (53); two support bars (51) are slidably arranged on the two slide rails (2); the two support bars (51) are both mounted with an infrared transmitter (52); and the tops of the two support bars (51) are both provided with a warning light (53); the infrared transmitter (52) and the warning light (53) on the same support bar (51) are matched with each other.

5. A static and dynamic three-axis force performance testing device for a linear motor according to claim 4, characterized in that: The two slide rails (2) are each provided with scales, and the two support bars (51) are each provided with a pair of fastening bolts (54), and tightening the fastening bolts (54) can limit the position of the support bar (51) on the slide rail (2).

6. A static and dynamic three-axis force performance testing device for a linear motor according to claim 5, characterized in that: The two infrared transmitters (52) are used in conjunction with the sensors I (34) on the same side thereof. When the positioning error of the slide of the linear motor to be tested is too large, the infrared transmitter (52) issues a warning via the warning light (53).

7. A static and dynamic three-axis force performance testing device for a linear motor according to claim 6, characterized in that: The two infrared transmitters (52) can respectively warn when the positioning stroke of the slide of the linear motor to be tested is too much greater than the standard value and when the positioning stroke is too much less than the standard value.

8. A static and dynamic three-axis force performance testing device for a linear motor according to claim 7, characterized in that: The device also includes a low-temperature detection mechanism (6), the low-temperature detection mechanism (6) includes a semiconductor chip I (61), a semiconductor chip II (62) and a cable (63), the semiconductor chip I (61) and the semiconductor chip II (62) are both detachably installed, the semiconductor chip I (61) is arranged on the side wall of the linear motor to be detected, the semiconductor chip II (62) is arranged on the slide seat of the linear motor to be detected, and the semiconductor chip I (61) and the semiconductor chip II (62) are connected via the cable (63).

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