A static and dynamic triaxial force performance test device for a linear motor

Abstract

The present invention relates to the field of testing equipment, and provides a static and dynamic three-axis force performance testing device for a linear motor, including a machine frame, etc.; two slide rails are fixedly arranged at the top of the machine frame, and a slide table is slidably arranged on the two slide rails in common. A cylinder is installed on the lower surface of the slide table, and a cushion block is arranged at the bottom end of the output shaft of the cylinder. When the output shaft of the cylinder extends, it can press on the slide seat of the linear motor to be tested through the cushion block. Through the arrangement of the cylinder, the cushion block and the positioning detection mechanism, the present invention can change the load of the linear motor through the cylinder and the cushion block, and detect the positioning accuracy of the linear motor during its reciprocating operation under different loads through two dial indicators I and two sensors I, and analyze by combining multiple groups of data, so as to obtain the dynamic performance of the linear motor, thereby making its final test result closer to its actual performance.

Description

Technical Field

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

[0002] The testing of linear motors is a systematic project aimed at confirming whether the performance indicators of linear motors meet the design requirements and actual application needs. It includes static parameter testing and dynamic performance testing. Among them, dynamic performance testing is the process of evaluating the performance indicators of linear motors under motion conditions, mainly focusing on the real-time performance of motors under actual working conditions.

[0003] Chinese Patent CN110715805A discloses a test bench and a test method for a small linear motor. The test bench includes a base, a lower clamping plate, and an upper clamping plate that are sequentially arranged parallel to each other from bottom to top. Among them, 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 between the upper clamping plate and the lower clamping plate; the distance between the lower clamping plate and the base is adjusted through the first guide rod fixing mechanism to adapt to the height of the small linear motor to be tested; a second guide rod hole for the bottom end of the second guide rod mechanism to pass through, including multiple groups of bolt hole groups with the same size but different distances from the center position of the lower clamping plate to adapt to the length and width of the small linear motor to be tested. However, there are still some deficiencies in the use of this patent. The test items of this device are not comprehensive. Especially when performing dynamic testing on a 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 triaxial 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 testing device for a linear motor, comprising a frame, slide rails, a slide table, a cylinder, a cushion block and a positioning and detection mechanism. Two slide rails are fixedly arranged on the top of the frame, and a slide table is slidably arranged on the two slide rails in common. A cylinder is installed on the lower surface of the slide table, and a cushion block is arranged at the bottom end of the output shaft of the cylinder. When the output shaft of the cylinder extends, it can press on the slide seat of the linear motor to be tested through the cushion block. The positioning and detection mechanism comprises a mounting table, a micrometer I, a trigger rod I, a sensor I and a pressure detector. Mounting tables are fixedly arranged on the left and right inner side walls of the frame, micrometers I are installed on the two mounting tables, and the installation directions of the two micrometers I are opposite. Trigger rods I are arranged on the two micrometers I, the trigger rod I is connected to the pointer of the micrometer I, and when the trigger rod I moves, the pointer of the micrometer I will also rotate accordingly. Sensors I are installed on the ends of the two trigger rods I close to each other. When the slide seat of the linear motor to be tested slides, it will contact the two sensors I. A pressure detector is installed in the cushion block.

[0006] In addition, particularly preferably, the device further comprises a vibration detection mechanism. The vibration detection mechanism comprises a guide frame, a slide plate, a micrometer II, a trigger rod II and a sensor II. Two guide frames are symmetrically arranged before and after on the left inner side wall of the frame. Slide plates are arranged on the two guide frames. Micrometers II are installed on the two slide plates respectively, and the installation directions of the two micrometers II are opposite. Trigger rods II are arranged on the two micrometers II, the trigger rod II is connected to the pointer of the micrometer II, and sensors II are installed on the ends of the two trigger rods II close to each other.

[0007] In addition, particularly preferably, the vibration detection mechanism further comprises a screw rod. The slide plate is slidably matched with the corresponding guide frame. The screw rod is rotatably penetrated through the two guide frames, and the screw rod is rotationally connected with the slide plate on the same guide frame through threads. Rotating the screw rod can adjust the position of the slide plate and make the sensor II fit against the side wall of the linear motor to be tested.

[0008] In addition, particularly preferably, the device further comprises an alarm mechanism. The alarm mechanism comprises a support bar, an infrared emitter and a warning light. Two support bars are slidably arranged on the two slide rails in common. Infrared emitters are installed on the two support bars, and warning lights are arranged on the tops of the two support bars. The infrared emitter and the warning light on the same support bar are matched with each other.

[0009] In addition, particularly preferably, scales are arranged on the two slide rails, and a pair of fastening bolts are arranged on each of the two support bars. 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 respectively used in combination with the sensor I on the same side. 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] In addition, it is particularly preferred that the two infrared emitters can respectively give warnings in cases where the positioning stroke of the slide of the linear motor to be tested is much greater than the standard value and the positioning stroke is much less than the standard value.

[0012] In addition, it is particularly preferred that the device further includes a low-temperature detection mechanism. The low-temperature detection mechanism includes a semiconductor chip I, a semiconductor chip II and a cable. Both the semiconductor chip I and the semiconductor chip II are detachably installed. The semiconductor chip I is arranged on the side wall of the linear motor to be detected, and the semiconductor chip II is arranged on the slide 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. Through the arrangement of the cylinder, the cushion block and the positioning detection mechanism, the load of the linear motor can be changed by the cylinder and the cushion block, and the positioning accuracy of the linear motor during its reciprocating operation under different loads can be detected by two dial indicators I and two sensors I. By analyzing multiple groups of data, the dynamic performance of the linear motor can be obtained, so that the final test result is closer to its actual performance;

[0014] 2. Through the arrangement of the vibration detection mechanism, according to the model of the linear motor, the screw can be rotated to change the position of the slide plate, so that the sensor II can be attached to 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, making the final detection result more comprehensive;

[0015] 3. Through the arrangement of the alarm mechanism, when detecting the positioning accuracy of the linear motor, the positions of the support bar and the infrared emitter can be adjusted in advance. During the detection, when the positioning stroke of the linear motor is too large or too small, a prompt is given through the warning light, and it can be determined as a defective product without data analysis, thus accelerating the detection efficiency.

[0016] 4. Through the arrangement of the low-temperature detection mechanism, the linear motor is cooled by the semiconductor chip I and the semiconductor chip II and is operated at the same time, so as to obtain the working performance of the linear motor in an extreme environment, further improving the accuracy and comprehensiveness of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The schematic diagrams in the specification, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of a partial structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the positioning detection mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the cushion block and the pressure detector of the present invention.

[0022] Figure 5 This is a schematic diagram of the vibration detection mechanism of the present invention.

[0023] Figure 6 This is a sectional view of the vibration detection mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of the support bar and the infrared emitter of the present invention.

[0025] Figure 8 This is a schematic diagram of the alarm mechanism of the present invention.

[0026] Figure 9 This is a schematic diagram of the low-temperature detection mechanism of the present invention.

[0027] In the figure: 1, frame; 11, sample machine; 2, slide rail; 21, slide table; 22, cylinder; 23, cushion block; 3, positioning detection mechanism; 31, mounting table; 32, dial indicator I; 33, trigger rod I; 34, sensor I; 35, pressure detector; 4, vibration detection mechanism; 41, guiding frame; 42, sliding plate; 43, dial indicator II; 44, trigger rod II; 45, sensor II; 46, screw; 5, alarm mechanism; 51, support bar; 52, infrared emitter; 53, warning light; 54, fastening bolt; 6, low-temperature detection mechanism; 61, semiconductor chip I; 62, semiconductor chip II; 63, cable. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 in no way restrictive of the present invention and its applications or uses. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-4, A static and dynamic three-axis force performance testing device for a linear motor, comprising a frame 1, slide rails 2, a slide table 21, a cylinder 22, a cushion block 23 and a positioning and detection mechanism 3. The positioning and detection mechanism 3 includes a mounting table 31, a dial indicator 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. Scales are arranged on both of the two slide rails 2, and 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 output shaft of the cylinder 22 is vertically downward, and a cushion block 23 is arranged at the end of its output shaft. After placing the sample machine 11 on the frame 1, the cylinder 22 can be started to extend its output shaft, so that the cushion block 23 contacts the slide seat of the sample machine 11, and pressure is applied to the slide seat of the sample machine 11 through the cylinder 22 to change the load of the sample machine 11. When the sample machine 11 is started later, when its slide seat slides back and forth left and right, the slide table 21, the cylinder 22 and the cushion block 23 will also slide synchronously. Mounting tables 31 are fixedly arranged on the left and right inner side walls of the frame 1 by bolts. Dial indicators I 32 are installed on both of the two mounting tables 31, and the installation directions of the two dial indicators I 32 are opposite. Trigger rods I 33 are arranged on both of the two dial indicators I 32. Sensors I 34 are installed on the mutually approaching ends of the two trigger rods I 33. When the slide seat of the sample machine 11 slides back and forth, when the slide seat reaches the left and right ends of the sample machine 11, it will respectively contact the two sensors I 34 and squeeze the sensors I 34, causing the sensors I 34 and the trigger rods I 33 to move in the direction of the dial indicators I 32. Since the trigger rods I 33 are connected to the pointers of the dial indicators I 32, when the trigger rods I 33 approach the dial indicators I 32, the readings of the dial indicators I 32 will increase. The user can analyze the positioning accuracy of the sample machine 11 during operation through the readings of the dial indicators I 32 and the pressure received by the sensors I 34. A pressure detector 35 is installed in the cushion block 23, and the pressure detector 35 can be used to more accurately adjust the load of the sample machine 11 during the test.

[0030] Please refer to 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.

[0031] 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.

[0032] 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.

[0033] Please refer to Figure 1 and Figure 9 In the embodiment of the present invention, a low-temperature detection mechanism 6 is further included. The low-temperature detection mechanism 6 includes a semiconductor chip I 61, a semiconductor chip II 62, and a cable 63. Both the semiconductor chip I 61 and the semiconductor chip II 62 are detachably installed, and the semiconductor chip I 61 and the semiconductor chip II 62 are connected by the cable 63. When the positioning accuracy of the sample machine 11 and other detections 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 of the sample machine 11. The semiconductor chip I 61 and the semiconductor chip II 62 are used to cool the sample machine 11, and under low-temperature conditions, the sample machine 11 is tested under extreme environments, further improving the comprehensiveness of the detection.

[0034] 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, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be understood as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0037] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of a device or feature shown in the figures with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used herein.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0039] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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 two trigger rods I (33) are both mounted with sensors I (34) on their ends close to each other. 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); The machine also 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 two trigger rods II (44) are each provided with a sensor II (45) on one end close to each other.

2. A static and dynamic three-axis force performance testing device for a linear motor according to claim 1, 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.

3. A static and dynamic three-axis force performance testing device for a linear motor according to claim 2, 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.

4. A static and dynamic three-axis force performance testing device for a linear motor according to claim 3, 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).

5. A static and dynamic three-axis force performance testing device for a linear motor according to claim 4, 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).

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) 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.

7. A static and dynamic three-axis force performance testing device for a linear motor according to claim 6, 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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