Double-shaft motor spline groove detection device and use method thereof

Abstract

The invention belongs to the technical field of detection, and particularly relates to a double-shaft motor spline groove detection device and a use method thereof.The double-shaft motor spline groove detection device comprises at least one approximately-U-shaped guide strip, at least one spline groove, at least one spline groove, at least one spline groove, at least one spline groove, at least one spline groove, at least one spline groove, at least one spline groove, at least one spline groove and at least one spline groove, the first detection sheet and the second detection sheet are respectively arranged on the side wall and the bottom surface of the guide strip; the driving mechanism is used for driving the guide strip loaded with the shaft sleeve to move along the to-be-detected spline groove of the motor shaft; whether the width and / or depth of the spline groove are / is too small or not is detected through the guide strip in the moving process of the guide strip, when the spline groove is detected by the double-shaft motor spline groove detection device, the guide strip drives the shaft sleeve to move towards the motor shaft, the shaft sleeve and the motor shaft are coaxial, and if the guide strip cannot extend into the spline groove, the spline groove is detected. The width and / or depth of the spline groove are / is too small.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and in particular relates to a dual-axis motor spline groove detection device and a use method thereof. Background Art

[0002] Electric clothes drying racks are generally driven by motors to rise and fall. Since there will be loads on the electric clothes drying racks, the motor needs to be equipped with a self-locking function.

[0003] In the related art, in order to realize the self-locking function of the motor when it is stopped, a sleeve that can only slide in the axial direction is generally installed on the motor shaft, and a damping plate is arranged on the outer side of one end of the sleeve. When the motor is stopped, the sleeve is forced to slide away from the motor shaft, thereby resisting the damping plate to achieve self-locking.

[0004] In order to better realize the self-locking function, a certain gap needs to be left between the spline groove on the motor shaft and the convex ridge on the inner wall of the sleeve to facilitate the sliding of the sleeve; at the same time, the gap cannot be too large, otherwise the convex ridge will collide with the spline groove every time it is started.

[0005] In the actual production process, the bushing can be customized, so the dimensional accuracy of the ridges is very high. However, the dual-shaft motors are generally purchased standard motors. There are no spline grooves on the shafts of standard motors, and they need to be slotted by themselves later, which will result in errors in their dimensions.

[0006] Therefore, how to detect the size of the spline grooves opened on the dual-axis motor is a technical problem that technical personnel in this field urgently need to solve.

[0007] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0008] The embodiments of the present disclosure at least provide a dual-axis motor spline groove detection device and a method for using the same.

[0009] In the first aspect, an embodiment of the present disclosure provides a dual-axis motor spline groove detection device, which includes: at least one guide bar that is approximately "U"-shaped, on which a shaft sleeve is inserted, and the convex ridge of the shaft sleeve is located in the groove of the guide bar; a first detection piece and a second detection piece, which are respectively arranged on the side wall and the bottom surface of the guide bar; and a driving mechanism, which is used to drive the guide bar carrying the shaft sleeve to move along the spline groove to be detected on the motor shaft; wherein during the movement of the guide bar, the guide bar is used to detect whether the groove width and / or groove depth of the spline groove is too small; and when the guide bar is pulled out after moving to a threshold value, the first detection piece and the second detection piece are used to detect whether the groove width and / or groove depth of the spline groove is too large.

[0010] In an optional embodiment, the size of the guide bar is the same as the standard gap between the ridge and the spline groove; during the movement of the guide bar, if the groove width and / or groove depth of the spline groove to be detected is too small, the guide bar abuts against the end face of the motor shaft.

[0011] In an optional embodiment, the first detection piece and the second detection piece both include: a linkage rod; wherein a pressure-bearing protrusion is provided at one end of the linkage rod, and a limiting boss is provided at the other end; the pressure-bearing protrusion protrudes from the outer wall of the guide strip, and the limiting boss protrudes from the inner wall of the slot; when the guide strip moves to a threshold and is pulled out, if the groove width and / or groove depth of the spline groove to be detected is too large, the guide strip drives the sleeve to be pulled out synchronously through the limiting boss protruding from the inner wall of the slot.

[0012] In an optional embodiment, mounting grooves are provided on the side walls and bottom surface of the guide strip to respectively install the first detection piece and the second detection piece; wherein an avoidance hole is provided at the bottom of the mounting groove; and the limiting boss protrudes from the inner wall of the groove after passing through the avoidance hole.

[0013] In an optional embodiment, the linkage rod is rotatably arranged in the installation groove via a rotating shaft, and a coil spring is sleeved on the rotating shaft to drive the compressed protrusion to protrude from the outer wall of the guide strip and the limiting boss to protrude from the inner wall of the slot.

[0014] In an optional embodiment, the mounting groove goes over the end surface of the convex rib, so that the avoidance hole is located outside the end surface of the convex rib.

[0015] In the second aspect, an embodiment of the present disclosure provides a method for using the dual-axis motor spline groove detection device as described above, which includes: inserting a sleeve on a guide bar; moving the guide bar carrying the sleeve along the spline groove to be detected on the motor shaft through a driving mechanism; during the movement of the guide bar, detecting whether the groove width and / or groove depth of the spline groove is too small through the guide bar; when the guide bar is pulled out after moving to a threshold value, detecting whether the groove width and / or groove depth of the spline groove is too large through the first detection piece and the second detection piece on the guide bar.

[0016] In an optional embodiment, the method of inserting the sleeve on the guide bar includes: placing the rib of the sleeve in the notch of the guide bar, and making the end surface of the rib abut against the limiting boss extending into the notch.

[0017] In an alternative embodiment, the guide strip has the same dimensions as the standard gap between the ridge and the spline groove.

[0018] In an optional embodiment, the guide strip drives the sleeve to move coaxially with the motor shaft.

[0019] The beneficial effect of the present invention is that when the spline groove is detected by the dual-axis motor spline groove detection device and the use method thereof, the guide bar drives the sleeve to move toward the motor shaft, and the sleeve and the motor shaft are coaxial. At this time, if the guide bar cannot extend into the spline groove, it indicates that the spline groove width and / or groove depth are too small; if the guide bar can extend into the spline groove, the guide bar drives the sleeve to move along the spline groove until it moves to the threshold, that is, the sleeve has moved to the installation position, and the guide bar is pulled out at this time. If the sleeve is pulled out following the guide bar, it indicates that the spline groove width and / or groove depth are too large; the dual-axis motor spline groove detection device eliminates unqualified spline grooves by detecting the spline groove width and / or groove depth as being too small and too small, thereby ensuring that the size of a qualified spline groove is within a preset range.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of a dual-axis motor spline groove detection device provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of the structure of a guide strip with a detection sheet provided in an embodiment of the present disclosure; Figure 3 A schematic structural diagram of a guide strip carrying a shaft sleeve provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of a structure when a spline groove is too shallow provided in an embodiment of the present disclosure; Figure 5 A schematic diagram of a structure when a spline groove is too deep provided in an embodiment of the present disclosure; Figure 6 A schematic diagram of a structure when a spline groove is too wide provided in an embodiment of the present disclosure; Figure 7A schematic diagram of a structure when the spline groove depth is qualified provided by an embodiment of the present disclosure; Figure 8 A schematic diagram of the structure of a mounting slot provided in an embodiment of the present disclosure; Fig. 9 A schematic diagram of the structure of a standard gap provided in an embodiment of the present disclosure.

[0024] In the figure: Guide strip 1, notch 11, mounting groove 12, avoidance hole 13; Axle sleeve 2, convex ridge 21; The first detection piece 3, the linkage rod 31, the pressure-bearing protrusion 32, and the limiting boss 33; The second detection piece 4; Motor shaft 5, spline groove 51; Standard clearance 6. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be exaggerated or reduced in order to effectively describe the technical content.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] like Figures 1 to 6 As shown, at least one embodiment provides a dual-axis motor spline groove detection device, which includes: at least one guide bar 1 that is approximately "U"-shaped, on which a sleeve 2 is inserted, and the convex ridge 21 of the sleeve 2 is located in the groove 11 of the guide bar 1; a first detection piece 3 and a second detection piece 4, which are respectively arranged on the side wall and the bottom surface of the guide bar 1; and a driving mechanism, which is used to drive the guide bar 1 carrying the sleeve 2 to move along the spline groove 51 to be detected of the motor shaft 5; wherein during the movement of the guide bar 1, the guide bar 1 is used to detect whether the groove width and / or groove depth of the spline groove 51 is too small; and when the guide bar 1 is pulled out after moving to a threshold value, the first detection piece 3 and the second detection piece 4 are used to detect whether the groove width and / or groove depth of the spline groove 51 is too large.

[0029] In this embodiment, there is only one spline groove 51 on the motor shaft 5, so there is only one guide bar 1. Since the size of the sleeve 2 is qualified, the convex ridge 21 and the notch 11 are clearance-matched.

[0030] Specifically, when the spline groove 51 is detected, the guide bar 1 drives the sleeve 2 to move toward the motor shaft 5, and the sleeve 2 and the motor shaft 5 are coaxial. At this time, if the guide bar 1 cannot extend into the spline groove 51, it means that the width and / or depth of the spline groove 51 are too small; if the guide bar 1 can extend into the spline groove 51, the guide bar 1 drives the sleeve 2 to move along the spline groove 51 until it moves to the threshold, that is, the sleeve 2 has moved to the installation position. At this time, the guide bar 1 is pulled out. If the sleeve 2 is pulled out along with the guide bar 1, it means that the width and / or depth of the spline groove 51 are too large; the dual-axis motor spline groove detection device eliminates unqualified spline grooves 51 by detecting the width and / or depth of the spline groove 51 that are too small and too small, thereby ensuring that the size of the qualified spline groove 51 is within a preset range.

[0031] like Figure 4 and Fig. 9 As shown, in some embodiments, the size of the guide bar 1 is the same as the standard gap 6 between the ridge 21 and the spline groove 51; during the movement of the guide bar 1, if the groove width and / or groove depth of the spline groove 51 to be detected is too small, the guide bar 1 presses against the end face of the motor shaft 5.

[0032] Specifically, the size of the convex rib 21 is qualified, and the size of the guide bar 1 is qualified, so the guide bar 1 abuts against the end face of the motor shaft 5, which indicates that the size of the spline groove 51 is unqualified; wherein, Figure 4 This is a schematic diagram of the structure when the spline groove is too shallow. The schematic diagram of the structure when the spline groove is too narrow is similar to its principle.

[0033] like Figure 5 , Figure 6 , Figure 7 As shown, in some embodiments, the first detection piece 3 and the second detection piece 4 both include: a linkage rod 31; wherein a pressure-bearing protrusion 32 is provided at one end of the linkage rod 31, and a limiting boss 33 is provided at the other end; the pressure-bearing protrusion 32 protrudes from the outer wall of the guide strip 1, and the limiting boss 33 protrudes from the inner wall of the slot 11; when the guide strip 1 moves to the threshold and is pulled out, if the groove width and / or groove depth of the spline groove 51 to be detected is too large, the guide strip 1 drives the sleeve 2 to be pulled out synchronously through the limiting boss 33 protruding from the inner wall of the slot 11.

[0034] Specifically, when the guide strip 1 can extend into the spline groove 51, it at least indicates that the groove width and / or groove depth of the spline groove 51 are not too small; if the groove width and / or groove depth of the spline groove 51 are qualified, the pressure protrusion 32 will be squeezed, thereby driving the limiting boss 33 to retract, so as to release the limitation on the convex rib 21. At this time, the guide strip 1 will not be pulled out when the sleeve 2 is pulled out; if the groove width and / or groove depth of the spline groove 51 are too large, the pressure protrusion 32 will not be squeezed, and the limiting boss 33 will still protrude from the inner wall of the notch 11. At this time, the guide strip 1 will be pulled out and the sleeve 2 will be pulled out synchronously.

[0035] like Figure 8 As shown, in some embodiments, mounting grooves 12 are provided on the side walls and bottom surface of the guide strip 1 to respectively install the first detection piece 3 and the second detection piece 4; wherein an avoidance hole 13 is provided at the bottom of the mounting groove 12; and the limiting boss 33 passes through the avoidance hole 13 and protrudes out of the inner wall of the slot 11.

[0036] In some embodiments, the linkage rod 31 is rotatably disposed in the installation slot 12 via a rotating shaft, and a coil spring is sleeved on the rotating shaft to drive the compressed protrusion 32 to protrude from the outer wall of the guide strip 1 and the limiting boss 33 to protrude from the inner wall of the slot 11 .

[0037] Optionally, in addition to the coil spring, an elastic sheet may be provided, and the elastic sheet is provided between the pressure-bearing protrusion 32 and the mounting groove 12 , so as to push the pressure-bearing protrusion 32 to protrude from the outer wall of the guide strip 1 .

[0038] In some embodiments, the mounting groove 12 passes over the end surface of the convex rib 21 so that the avoidance hole 13 is located outside the end surface of the convex rib 21, that is, the pressure protrusion 32 is located inside the end surface of the convex rib 21, and the limiting boss 33 is located outside the end surface of the convex rib 21.

[0039] At least one embodiment also provides a method for using a dual-axis motor spline groove detection device, which includes: inserting a sleeve 2 on the guide bar 1; moving the guide bar 1 carrying the sleeve 2 along the spline groove 51 to be detected of the motor shaft 5 through a driving mechanism; during the movement of the guide bar 1, detecting whether the groove width and / or groove depth of the spline groove 51 is too small through the guide bar 1; when the guide bar 1 moves to a threshold and is pulled out, detecting whether the groove width and / or groove depth of the spline groove 51 is too large through the first detection piece 3 and the second detection piece 4 on the guide bar 1.

[0040] In some embodiments, the method of inserting the sleeve 2 on the guide bar 1 includes: placing the rib 21 of the sleeve 2 in the slot 11 of the guide bar 1 , and making the end surface of the rib 21 abut against the limiting boss 33 extending into the slot 11 .

[0041] In some embodiments, the size of the guide strip 1 is the same as the standard gap between the rib 21 and the spline groove 51 .

[0042] In some embodiments, the guide bar 1 drives the sleeve 2 to move coaxially with the motor shaft 5 .

[0043] Regarding the specific structure and implementation process of the dual-axis motor spline groove detection device, please refer to the relevant discussion in the above embodiment, which will not be repeated here.

[0044] To sum up, when the spline groove 51 is detected by the dual-axis motor spline groove detection device and its use method, the guide bar 1 drives the sleeve 2 to move toward the motor shaft 5, and the sleeve 2 and the motor shaft 5 are coaxial. At this time, if the guide bar 1 cannot extend into the spline groove 51, it means that the width and / or depth of the spline groove 51 are too small; if the guide bar 1 can extend into the spline groove 51, the guide bar 1 drives the sleeve 2 to move along the spline groove 51 until it moves to the threshold, that is, the sleeve 2 has moved to the installation position, and the guide bar 1 is pulled out at this time. If the sleeve 2 is pulled out along with the guide bar 1, it means that the width and / or depth of the spline groove 51 are too large; the dual-axis motor spline groove detection device eliminates unqualified spline grooves 51 by detecting the width and / or depth of the spline groove 51 that are too small and too small, thereby ensuring that the size of the qualified spline groove 51 is within a preset range.

[0045] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component.

[0046] In this article, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to another element or layer, or there may be intermediate elements or layers. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0047] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0048] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0049] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0052] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0053] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0054] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A dual-axis motor spline groove detection device, characterized in that: include: At least one approximately U-shaped guide strip (1) for inserting a shaft sleeve (2), wherein the convex ridge (21) of the shaft sleeve (2) is located in the groove (11) of the guide strip (1); A first detection sheet (3) and a second detection sheet (4) are respectively arranged on the side wall and the bottom surface of the guide strip (1); and A driving mechanism, used for driving a guide bar (1) carrying a shaft sleeve (2) to move along a spline groove (51) to be detected on a motor shaft (5); in During the movement of the guide bar (1), the guide bar (1) is used to detect whether the groove width and / or groove depth of the spline groove (51) is too small; and When the guide bar (1) is pulled out after moving to a threshold value, the first detection piece (3) and the second detection piece (4) are used to detect whether the groove width and / or groove depth of the spline groove (51) is too large.

2. The dual-shaft motor spline groove detection device according to claim 1, characterized in that: The size of the guide strip (1) is the same as the standard gap between the convex rib (21) and the spline groove (51); During the movement of the guide bar (1), if the groove width and / or groove depth of the spline groove (51) to be detected is too small, the guide bar (1) abuts against the end surface of the motor shaft (5).

3. The dual-axis motor spline groove detection device according to claim 2, characterized in that: The first detection piece (3) and the second detection piece (4) both comprise: a linkage rod (31); wherein One end of the linkage rod (31) is provided with a pressure-bearing protrusion (32), and the other end is provided with a limiting boss (33); The pressure-bearing protrusion (32) protrudes from the outer wall of the guide strip (1), and the limiting boss (33) protrudes from the inner wall of the notch (11); When the guide bar (1) is pulled out after moving to the threshold value, if the groove width and / or groove depth of the spline groove (51) to be detected is too large, the guide bar (1) drives the shaft sleeve (2) to be pulled out synchronously through the limiting boss (33) protruding from the inner wall of the groove opening (11).

4. The dual-shaft motor spline groove detection device according to claim 3, characterized in that: The side wall and the bottom surface of the guide strip (1) are provided with mounting grooves (12) for mounting the first detection piece (3) and the second detection piece (4) respectively; wherein The bottom of the installation groove (12) is provided with an avoidance hole (13); The limiting boss (33) passes through the avoidance hole (13) and then protrudes out of the inner wall of the notch (11).

5. The dual-shaft motor spline groove detection device according to claim 4, characterized in that: The linkage rod (31) is rotatably arranged in the installation groove (12) via a rotating shaft, and a coil spring is sleeved on the rotating shaft to drive the pressure-bearing protrusion (32) to protrude from the outer wall of the guide strip (1) and the limiting boss (33) to protrude from the inner wall of the slot (11).

6. The dual-shaft motor spline groove detection device according to claim 5, characterized in that: The mounting groove (12) passes over the end surface of the convex rib (21), so that the avoidance hole (13) is located outside the end surface of the convex rib (21).

7. A method for using the dual-axis motor spline groove detection device as claimed in claim 1, characterized in that: include: Insert the shaft sleeve (2) onto the guide strip (1); The guide bar (1) carrying the shaft sleeve (2) is moved along the spline groove (51) to be detected of the motor shaft (5) by a driving mechanism; During the movement of the guide bar (1), the guide bar (1) is used to detect whether the groove width and / or groove depth of the spline groove (51) is too small; When the guide bar (1) is pulled out after moving to a threshold value, the first detection piece (3) and the second detection piece (4) on the guide bar (1) detect whether the groove width and / or groove depth of the spline groove (51) is too large.

8. The method for using the dual-axis motor spline groove detection device according to claim 7, characterized in that: The method for inserting the shaft sleeve (2) on the guide strip (1) comprises: The convex rib (21) of the shaft sleeve (2) is placed in the notch (11) of the guide strip (1), and the end surface of the convex rib (21) is abutted against the limiting boss (33) extending into the notch (11).

9. The method for using the dual-axis motor spline groove detection device according to claim 8, characterized in that: The dimensions of the guide strip (1) are the same as the standard clearance between the rib (21) and the spline groove (51).

10. The method for using the dual-axis motor spline groove detection device according to claim 9, characterized in that: The guide bar (1) drives the shaft sleeve (2) and the motor shaft (5) to move coaxially.

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