Ultra-low rotating speed testing device for speed reducer motor assembly

Abstract

The utility model provides an ultra-low rotating speed testing device for a speed reducer motor assembly, and belongs to the field of rotating speed testing tools. The speed reducer motor assembly ultra-low rotation speed testing device comprises a coupler and a mirror surface shaft sleeve, the mirror surface shaft sleeve is sleeved on the coupler, the surface of the mirror surface shaft sleeve is provided with a plurality of convex surfaces and a plurality of corresponding groove surfaces, the convex surfaces and the groove surfaces are arranged in a mutually crossed manner, the convex surfaces are used as reflective surfaces, and the reflective surfaces are used as reflective surfaces. An anti-reflection layer is arranged on the surface of the groove face and serves as a non-reflection face. The mirror surface shaft sleeve and the coupler are sleeved in an interference fit mode. And the mirror surface shaft sleeve is sleeved on the coupler in a heating manner. And a plurality of uniformly distributed convex surfaces and a plurality of corresponding groove surfaces are arranged on the surface of the mirror surface shaft sleeve. According to the utility model, the problem of low accuracy of testing the ultra-low rotating speed of the speed reducer motor assembly in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the rotational speed test tool field, concretely relates to a kind of reducer motor assembly ultra-low rotational speed testing device. BACKGROUND

[0002] Reducer motor assembly is the power transmission device commonly used in industrial production, with ultra-low rotational speed and large torque characteristics, is widely used in machinery, automation and aerospace and other fields.In some specific application scenarios, reducer motor assembly needs to meet in the specified time according to the specific rotational speed driving load rotation fixed angle, to achieve the requirement of precision control or special process.Therefore, it is particularly important to test and evaluate the actual output rotational speed of reducer motor assembly under ultra-low rotational speed.

[0003] Reducer motor assembly needs to test the actual output rotational speed under load torque, and the actual control rotational speed range is between 1.00RPM~1.70RPM, and reducer motor assembly includes mechanical limit structure, cannot rotate a whole circle.However, the non-contact tachometer and torque speed sensor commonly used in the prior art can only test the machine set that rotates a whole circle and the machine set above 5RPM, and cannot realize the test requirement of rotational speed range between 1.00RPM~1.70RPM.

[0004] The existing high-precision grating encoder on the market needs to be connected coaxially with machine set output shaft, and needs the assistance of software to realize.The contact tachometer is easily affected by transmission noise, vibration and friction and other factors, resulting in inaccurate test results.Some speed measuring equipment can only test under the condition that output shaft does not bear load, and cannot reflect the specific rotational speed under load. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of reducer motor assembly ultra-low rotational speed testing device, to solve the problem of low accuracy of existing technology in the ultra-low rotational speed test of reducer motor assembly.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Firstly, the utility model provides a kind of reducer motor assembly ultra-low rotational speed testing device, including shaft coupling and mirror surface shaft sleeve;

[0008] The mirror surface shaft sleeve is sleeved on the shaft coupling, and the mirror surface shaft sleeve surface is provided with a plurality of convex surfaces and corresponding a plurality of concave surfaces, and the plurality of convex surfaces and the plurality of concave surfaces are arranged alternately, the convex surface is used as the reflecting surface, and the surface of the concave surface is provided with anti-reflection layer or black oxidation layer, as non-reflecting surface.

[0009] The further improvement of the utility model lies in that the sleeving mode of the mirror surface shaft sleeve and the shaft coupling is interference fit mode.

[0010] The further improvement of the utility model lies in that the mirror surface shaft sleeve is heated and sleeved on the shaft coupling.

[0011] The further improvement of the utility model lies in that the mirror surface shaft sleeve surface is provided with a plurality of uniformly distributed convex surfaces and corresponding a plurality of concave surfaces.

[0012] The further improvement of the utility model lies in that the mirror surface shaft sleeve is a stainless steel mirror surface shaft sleeve.

[0013] The further improvement of the utility model lies in that the width of the plurality of convex surfaces is 3mm-3.1mm.

[0014] The further improvement of the utility model lies in that the width of the plurality of concave surfaces is 2.9mm-3mm.

[0015] The further improvement of the utility model lies in that the maximum outer diameter size of the plurality of convex surfaces is 75mm±0.05mm.

[0016] The further improvement of the utility model lies in that the maximum outer diameter size of the plurality of concave surfaces is 74mm-0.5mm.

[0017] The further improvement of the utility model lies in that the anti-reflection layer is black paint.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] Compared with the existing reducer motor assembly ultra-low speed test device, the reducer motor assembly ultra-low speed test device has a coupling and a mirror surface shaft sleeve. The coupling can reflect the laser beam several times in one rotation, so that the signal frequency received by the tachometer receiving window is greatly increased.

[0020] Further, the mirror surface shaft sleeve and the coupling are sleeved in an interference fit manner.

[0021] Further, the mirror surface shaft sleeve is heated and sleeved on the coupling, so that the mirror surface shaft sleeve and the coupling are tightly connected together to prevent loosening between the mirror surface shaft sleeve and the coupling.

[0022] Further, the mirror surface shaft sleeve has a plurality of uniformly distributed convex surfaces and corresponding concave surfaces.

[0023] Further, the mirror surface shaft sleeve is a stainless steel mirror surface shaft sleeve.

[0024] Further, the anti-reflection layer is black paint. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structural diagram of the super low speed testing device for the reducer motor assembly of the utility model;

[0026] Figure 2 It is the structure diagram of the shaft coupling in the super low speed testing device for the reducer motor assembly of the utility model;

[0027] Figure 3 It is the structure diagram of the mirror surface shaft sleeve in the super low speed testing device for the reducer motor assembly of the utility model;

[0028] In the drawing: 1, shaft coupling; 2, mirror surface shaft sleeve; 3, convex surface; 4, recessed surface. DETAILED DESCRIPTION

[0029] In order to further understand the content of the utility model, the utility model is described in detail below in combination with the drawings and specific embodiments. It should be understood that the embodiments are only used to explain the utility model and are not limited.

[0030] The super low speed testing device for the reducer motor assembly of the utility model designs the shaft coupling and the mirror surface shaft sleeve. The mirror surface shaft sleeve is sleeved on the shaft coupling, the mirror surface shaft sleeve surface is provided with a plurality of convex surfaces and a plurality of corresponding recessed surfaces, the convex surface is used as a reflecting surface, and the surface of the recessed surface is provided with an anti-reflection layer and is used as a non-reflecting surface. Compared with the prior art, the utility model effectively solves the problem that the super low speed testing accuracy of the reducer motor assembly is not high in the prior art.

[0031] Embodiment 1:

[0032] The embodiment discloses a super low speed testing device for a reducer motor assembly, and the overall structure of the super low speed testing device for the reducer motor assembly of the embodiment is as shown in the figure. Figure 1 The structure of the shaft coupling in the super low speed testing device for the reducer motor assembly of the embodiment is as shown in the figure. Figure 2 The technical scheme of the embodiment is specifically described as follows:

[0033] The super low speed testing device for the reducer motor assembly of the embodiment comprises a shaft coupling 1 and a mirror surface shaft sleeve 2. The mirror surface shaft sleeve 2 is sleeved on the shaft coupling 1, and a new combined shaft coupling is formed. The mirror surface shaft sleeve 2 surface is provided with a plurality of convex surfaces and a plurality of corresponding recessed surfaces (specifically, the mirror surface shaft sleeve 2 surface is provided with 40 convex surfaces 3 and 40 corresponding recessed surfaces 4), the plurality of convex surfaces and the plurality of recessed surfaces are arranged in cross, the convex surface is used as a reflecting surface, and the surface of the recessed surface is provided with an anti-reflection layer or a black oxidation layer and is used as a non-reflecting surface.

[0034] Specifically, the surface of the groove face is provided with an anti-reflection layer, the anti-reflection layer is black paint, the black paint is convenient to construct, and the black paint has a relatively fast drying speed, so that the construction period can be shortened and the cost can be saved.

[0035] The mirror surface sleeve 2 and the coupling 1 are sleeved in an interference fit mode, so that there is no gap between the mirror surface sleeve and the coupling, and the interference amount is used to achieve the effect of close fit, thereby preventing the mirror surface sleeve and the coupling from being disconnected.

[0036] The mirror surface sleeve 2 is heated and sleeved on the coupling 1, so that the mirror surface sleeve and the coupling are closely connected together, and the loosening phenomenon between the mirror surface sleeve and the coupling is prevented.

[0037] The mirror surface sleeve 2 is provided with a plurality of uniformly distributed convex surfaces and a plurality of corresponding groove surfaces, and the plurality of convex surfaces and the plurality of corresponding groove surfaces are uniformly distributed to completely distinguish the reflective surface and the non-reflective surface, which is helpful to accurately identify the reflective point of the tachometer, thereby improving the sampling frequency of the tachometer, and improving the measurement accuracy and stability.

[0038] The mirror surface sleeve 2 is a stainless steel mirror surface sleeve, the stainless steel sleeve can be used for a long time in various corrosive environments, and the stainless steel sleeve is not easy to be corroded and damaged.

[0039] The structure of the mirror surface sleeve in the speed reducer motor assembly ultra-low speed testing device is shown in Figure 3 Figure 3 40x3EQS indicates that 40 uniformly distributed 3mm wide grooves are arranged on the mirror surface sleeve. 0.8 indicates that the roughness of the surface of the 40 uniformly distributed teeth is required. 0.8 (the unit is usually microns) indicates that the machining precision of the surface is 0.5mm.

[0040] The width of the plurality of convex surfaces is 3mm-3.1mm, the width of the plurality of groove surfaces is 2.9mm-3mm, the maximum outer diameter size of the plurality of convex surfaces is 75mm±0.05mm, and the maximum outer diameter size of the plurality of groove surfaces is 74mm-0.5mm.

[0041] ​The utility model discloses a reducer motor assembly ultra -low speed testing device when the reducer motor assembly is rotated with the shaft coupling, and the shaft coupling can reflect several times laser beams, equivalent to the speedometer receiving window can receive several times laser beams, so that the speed of amplification several times can be obtained, so as to meet the actual measurement minimum speed requirement of existing equipment speedometer (UT372), and the final speed of the reducer motor assembly of the embodiment is the speedometer display value divided by 40.

[0042] When the reducer motor assembly ultra -low speed is tested, only need to aim the light source of the existing non - contact speedometer at the center height of the mirror surface shaft sleeve 2, and the operation is very convenient. Figure 1

[0043] Embodiment 2:

[0044] The embodiment discloses a kind of reducer motor assembly ultra -low speed testing device, the reducer motor assembly ultra -low speed testing device of the embodiment as shown in Figure Figure 1 The structure of the shaft coupling in the reducer motor assembly ultra -low speed testing device of the embodiment as shown in Figure Figure 2 The technical scheme of the embodiment is specifically described as follows:

[0045] The reducer motor assembly ultra -low speed testing device of the embodiment includes shaft coupling 1 and mirror surface shaft sleeve 2.Mirror surface shaft sleeve 2 is sleeved on shaft coupling 1, and a new combined shaft coupling is formed.Mirror surface shaft sleeve 2 surface is provided with a plurality of convex surfaces and a plurality of corresponding grooves (specifically, mirror surface shaft sleeve 2 surface is provided with 40 convex surfaces 3 and 40 corresponding grooves 4), and the plurality of convex surfaces and the plurality of grooves are arranged in cross.The convex surface is used as a reflective surface, and the surface of the groove is provided with an anti -reflective layer or a black oxide layer as a non -reflective surface.

[0046] Specifically, the surface of the groove of the embodiment is provided with a black oxide layer, and the black oxide layer is relatively simple to operate and has low cost.It can obtain uniform black appearance, and the oxide layer has certain corrosion resistance and wear resistance.The specific process of forming the black oxide layer of the embodiment is as follows: after the groove is oxidized, a black oxide layer such as magnetite is formed on the surface.

[0047] The sleeving mode of mirror surface shaft sleeve 2 and shaft coupling 1 is interference fit mode, which can make the mirror surface shaft sleeve and the shaft coupling have no gap, rely on the interference amount to achieve the effect of close fit, and prevent the mirror surface shaft sleeve and the shaft coupling from falling off.

[0048] The mirror surface shaft sleeve 2 of the embodiment is heated and sleeved on the shaft coupling 1, which can tightly connect the mirror surface shaft sleeve and the shaft coupling, and prevent the mirror surface shaft sleeve and the shaft coupling from loosening later.

[0049] ​The mirror surface sleeve 2 is provided with a plurality of convex surfaces and corresponding grooves on the surface, and the plurality of convex surfaces and corresponding grooves are uniformly distributed to completely distinguish the reflective surface and the non-reflective surface, which helps the tachometer to accurately identify the reflective point, thereby improving the sampling frequency of the tachometer, and improving the accuracy and stability of the measurement.

[0050] The mirror surface sleeve 2 is a stainless steel mirror surface sleeve, which can be used for a long time in various corrosive environments, and is not easy to be corroded and damaged.

[0051] The structure of the mirror surface sleeve in the speed reducer motor assembly ultra-low speed testing device is shown in Figure 3 Figure 3 The 40x3EQS indicates that 40 uniformly distributed 3mm wide grooves are arranged on the mirror surface sleeve. The 0.8 indicates the roughness requirement of the surface processing of the uniformly distributed 40 teeth. The 0.8 (unit is usually microns) indicates the machining precision of the surface. The height difference between the convex surface and the groove surface is 0.5mm.

[0052] The width of the plurality of convex surfaces in the embodiment is 3mm-3.1mm. The width of the plurality of grooves in the embodiment is 2.9mm-3mm. The maximum outer diameter size of the plurality of convex surfaces in the embodiment is 75mm±0.05mm. The maximum outer diameter size of the plurality of grooves in the embodiment is 74mm-0.5mm.

[0053] When the speed reducer motor assembly ultra-low speed is tested, only the light source of the existing non-contact tachometer needs to be aligned with the center height of the mirror surface sleeve 2, and the operation is very convenient. Figure 1

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: the specific embodiments of the utility model can still be modified or replaced, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be covered in the protection scope of the claims of the utility model.​​

Claims

1. A device for testing ultra-low speed of a reducer motor assembly, characterized in that, Includes a coupling (1) and a mirror bushing (2); The mirror bushing (2) is fitted onto the coupling (1). The surface of the mirror bushing (2) has several raised surfaces and several corresponding grooves. The raised surfaces and grooves are arranged in a crisscross pattern. The raised surfaces serve as reflective surfaces, and the surfaces of the grooves are provided with an anti-reflective layer or a black oxide layer to serve as non-reflective surfaces.

2. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The mirror bushing (2) and the coupling (1) are fitted together by an interference fit.

3. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The mirror bushing (2) is heated and fitted onto the coupling (1).

4. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The surface of the mirror bushing (2) has several evenly distributed raised surfaces and several corresponding grooves.

5. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The mirror bushing (2) is a stainless steel mirror bushing.

6. The ultra-low speed testing device for a reducer motor assembly according to claim 1, characterized in that, The width of the several raised surfaces is 3mm-3.1mm.

7. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The width of several grooved surfaces is 2.9mm-3mm.

8. The ultra-low speed testing device for reducer motor assembly according to claim 1, characterized in that, The maximum outer diameter of several raised surfaces is 75 mm ± 0.05 mm.

9. The ultra-low speed testing device for a reducer motor assembly according to claim 1, characterized in that, The maximum outer diameter of several grooved surfaces is 74mm-0.5mm.

10. The ultra-low speed testing device for a reducer motor assembly according to claim 1, characterized in that, The anti-reflective layer is black paint.

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