Device and method for automatically detecting outline dimension of slot wedge

Abstract

The invention discloses a device and method for automatically detecting the outline dimension of a slot wedge, and relates to the field of slot wedge outline dimension detection.The device comprises a detection table, a positioning mechanism is arranged on the detection table, and the positioning mechanism positions the slot wedge, so that the length direction of the slot wedge is parallel to the length direction of the detection table; transplanting air cylinders are arranged at the two ends of the detection table, detection mechanisms are arranged at the output ends of the transplanting air cylinders, and the transplanting air cylinders enable the detection mechanisms to move in the length direction of the detection table. A plurality of detection pens are arranged on the detection mechanism, and each detection pen is correspondingly used for being in contact with the surface of the slot wedge; and the detection mechanism and the positioning mechanism are both connected to the controller. The method can be used for a long time and has enough quality control capability.

Description

Technical Field

[0001] This invention relates to the field of groove wedge dimensional inspection, and in particular to an apparatus and method for automated inspection of groove wedge dimensional dimensions. Background Technology

[0002] In the assembly of small and medium-sized steam turbine generators, the assembly of slot wedges is crucial. Their main function is to secure the coil embedded in the iron core, preventing displacement within the slot and, consequently, preventing the coil from popping out. Therefore, the tolerance fit between the slot wedge and the wedge-shaped slot is particularly important; that is, the dimensional inspection of the slot wedge is a necessary step in the production of slot wedges.

[0003] In the assembly of small and medium-sized steam turbine generators, the slot wedges commonly used are trapezoidal slot wedges with a cross-section similar to a trapezoid, such as... Figure 1 As shown, dimensions or bevel angles that need to be inspected, such as A, B, C, D, E, F, G, and H, are currently detected using a template with a notch. The shape of the notch is the same as the shape and size of the surface to be inspected on the slot wedge. The template is used to hold the slot wedge in place, and then the slot wedge is pulled in the notch of the template. Visual inspection is performed to check for gaps or situations where it cannot be pulled, in order to detect whether the form and position tolerances are met. For example, Chinese Patent No. CN204202996U discloses "A Fixture for Inspecting Magnetic Slot Wedges in Motors".

[0004] The aforementioned testing method is slow, and due to wear and tear on the sample, the shape and size no longer match, resulting in low accuracy after long-term use. Therefore, a new testing technology is needed. Summary of the Invention

[0005] The purpose of this invention is to provide an automated detection device and method for the external dimensions of a slotted wedge, which can be used for a long time and has sufficient quality control capabilities, in order to address the problems mentioned above.

[0006] The technical solution adopted in this invention is as follows: A device for automated detection of the external dimensions of a slotted wedge includes a detection table, on which a positioning mechanism is provided. The positioning mechanism positions the slotted wedge so that the length direction of the slotted wedge is parallel to the length direction of the detection table. Transfer cylinders are provided at both ends of the detection table, and a detection mechanism is provided at the output end of each transfer cylinder. The transfer cylinders enable the detection mechanism to move along the length direction of the detection table. Multiple detection pens are provided on the detection mechanism, each corresponding to a surface of the slotted wedge. Both the detection mechanism and the positioning mechanism are connected to a controller.

[0007] Furthermore, the positioning mechanism includes a transverse positioning block disposed at one end of the testing platform and a longitudinal positioning block disposed on the side, a first positioning cylinder disposed at the other end of the testing platform, and a second positioning cylinder disposed on the other side.

[0008] Furthermore, the number of the second positioning cylinders is at least two.

[0009] Furthermore, the number of the longitudinal positioning blocks is at least two.

[0010] Furthermore, the detection mechanism includes a mounting base, on which a longitudinal fixed baffle and a longitudinal moving cylinder are arranged in the longitudinal direction and located on opposite sides of the detection table; the longitudinal fixed baffle is provided with pen A1 and / or pen B1, both of which are detection pens; pen A2 and / or pen B2 are provided on the output shaft of the longitudinal moving cylinder; pen A1 and pen A2 are used to detect the dimension A of the groove wedge, and pen B1 and pen B2 are used to detect the dimension B of the groove wedge; the longitudinal moving cylinder is connected to a controller.

[0011] Furthermore, the detection mechanism includes a mounting base, on which a vertical fixed baffle is provided. The vertical fixed baffle is arranged in the vertical direction and located below the detection table. A G pen and / or an H pen are provided on the vertical fixed baffle. Both the G pen and the H pen are detection pens. The G pen detects the inclined angle G of the groove wedge, and the H pen detects the inclined angle H of the groove wedge.

[0012] Furthermore, the detection mechanism includes a mounting base, on which a vertically moving cylinder is mounted. The vertically moving cylinder is arranged in the vertical direction and located above the detection platform. An E pen and / or a C pen and / or a F pen are mounted on the output end of the vertically moving cylinder. The E pen, C pen, and F pen are all detection pens. The E pen detects the slope angle E of the groove wedge, the C pen detects the size C of the groove wedge, and the F pen detects the slope angle F of the groove wedge. The vertically moving cylinder is connected to a controller.

[0013] Furthermore, the detection mechanism includes a mounting base, on which a D-pen is provided. The D-pen is a detection pen, and the D-pen on the two transplanting cylinders cooperates with each other to detect the size D of the groove wedge.

[0014] Furthermore, the detection pen is a contact displacement sensor.

[0015] A method for automatically detecting the external dimensions of a slotted wedge, utilizing the aforementioned device for automatically detecting the external dimensions of a slotted wedge, includes the following steps: S1: Place the slot wedge to be tested on the testing table; S2: The controller controls the first positioning cylinder to act on the other end of the slot wedge, pushing the slot wedge so that one end of the slot wedge abuts against the transverse positioning block; then the second positioning cylinder acts on the other side of the slot wedge, pushing the slot wedge so that one side of the slot wedge abuts against the longitudinal positioning block; thus completing the positioning of the slot wedge. S3: The controller controls the transplanting cylinder to move to the set displacement. After the movement is completed, the two D pens abut against the two end faces of the groove wedge, the G pens and H pens abut against the lower inclined surface of the groove wedge, and the A1 pens and B1 pens abut against the side surface of the groove wedge. S4: The controller drives the longitudinal moving cylinder and the vertical moving cylinder respectively, so that the longitudinal moving cylinder moves to a set displacement and the vertical moving cylinder moves to a set displacement. After the movement is completed, the E pen and F pen respectively abut against the inclined surface of the slot wedge; the C pen abuts against the top surface of the slot wedge; the A2 pen and B2 pen respectively abut against the side surface of the other side of the slot wedge. S5: Obtain the data from each testing pen and compare it with the set data. If they are the same or within the error range, the groove wedge's outer dimensions are qualified; otherwise, the groove wedge's outer dimensions are unqualified.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention achieves automated detection of the external dimensions of the slot wedge through a controller and related actuators (positioning mechanism, transfer cylinder, detection mechanism, etc.), reducing the workload of workers, effectively improving detection efficiency, and providing a foundation for the vision of a digital workshop; 2. This invention obtains displacement data by having the detection pen contact the surface of the groove wedge, effectively ensuring accuracy. At the same time, since the detection pen only needs to contact the surface of the groove wedge when detecting it, no relative friction is generated, which can effectively ensure long-term use. 3. The method provided by this invention can determine the angle of the inclined plane by detecting the displacement data obtained by the detection pen. It is a new approach to angle detection and effectively overcomes the technical difficulties of angle detection in the prior art. Attached Figure Description

[0017] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram showing the size distribution of the slot wedge; Figure 2 This is a schematic diagram showing the distribution of the components on the device disclosed in this invention; Figure 3 This is a horizontal schematic diagram showing the distribution of the detection pen disclosed in this invention; Figure 4 This is a longitudinal schematic diagram showing the distribution of the detection pen disclosed in this invention; Figure 5 This is a schematic diagram illustrating the detection principle of dimension A; Figure 6 This is a schematic diagram illustrating the detection principle of the inclined plane angle H; Markings in the diagram: 1-Detection table; 2-First positioning cylinder; 3-Second positioning cylinder; 4-Longitudinal positioning block; 5-Transverse positioning block; 6-Transplanting cylinder; 7-Mounting base; 8-Longitudinal moving cylinder; 9-Vertical moving cylinder; 10-Longitudinal fixing baffle; 11-Vertical fixing baffle; 12-A2 pen; 13-B2 pen; 14-E pen; 15-C pen; 16-F pen; 17-B1 pen; 18-H pen; 19-G pen; 20-A1 pen; 21-D pen. Detailed Implementation

[0018] In the description of this specification, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0019] Furthermore, the use of terms such as "horizontal" or "vertical" in this specification does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this specification, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly. For example, a link can be a fixed link, a detachable link, or an integral link; it can be a mechanical link or an electrical link; it can be a direct link or an indirect link through an intermediate medium; it can be a connection within two components.

[0021] Example 1 like Figures 1-6As shown, an automated detection device for the external dimensions of a slot wedge includes a detection platform 1. A positioning mechanism is installed on the detection platform 1 to position the slot wedge so that its length direction is parallel to the length direction of the detection platform 1, providing a basis for subsequent automated detection. Transfer cylinders 6 are installed at both ends of the detection platform 1. A detection mechanism is installed at the output end of each transfer cylinder 6, enabling the detection mechanism to move along the length direction of the detection platform 1, carrying the detection mechanism into the positioning position of the slot wedge. Multiple detection pens are installed on the detection mechanism, each corresponding to a surface of the slot wedge. Displacement is obtained through the detection pens (the displacement of the detection end of the detection pen relative to its initial position after it abuts against the slot wedge). This displacement is compared with preset displacement data. If they are the same or within the error range, the external dimensions of the slot wedge are qualified; otherwise, the external dimensions are unqualified. The transfer cylinders 6, the detection mechanism, and the positioning mechanism are all connected to a controller. The controller controls the movement of the components and obtains the displacement data of the detection pens, analyzes the displacement data, and determines whether the external dimensions of the slot wedge are qualified.

[0022] In summary, in this embodiment, it can be seen that the controller and related actuator positioning mechanism, transfer cylinder 6, detection mechanism, etc., realize the automated detection of the groove wedge's external dimensions, reduce the workload of workers, effectively improve detection efficiency, and provide a foundation for the vision of the digital workshop; by contacting the groove wedge surface with the detection pen, the detection pen obtains displacement data, effectively ensuring accuracy. At the same time, since the detection pen only needs to contact the groove wedge surface when detecting the groove wedge surface, no relative friction is generated, which can effectively ensure long-term use.

[0023] Example 2 Based on Example 1, further specific implementation methods for the "positioning mechanism" are proposed.

[0024] In one feasible implementation, the positioning mechanism includes a transverse positioning block 5 disposed at one end of the detection table 1 and a longitudinal positioning block 4 disposed on the side. A first positioning cylinder 2 is disposed at the other end of the detection table 1, and a second positioning cylinder 3 is disposed on the other side. The positioning mechanism pushes the slot wedge to move laterally by the first positioning cylinder 2, so that one end of the slot wedge abuts against the transverse positioning block 5. The second positioning cylinder 3 pushes the slot wedge to move longitudinally, so that one side of the slot wedge abuts against the longitudinal positioning block 4, thus completing the positioning of the slot wedge.

[0025] In one feasible implementation, the number of the second positioning cylinders 3 is at least two, preferably two, and the two second positioning cylinders 3 are arranged along the length direction of the groove wedge to overcome the problem that the groove wedge is large in length and is prone to deflection during pushing, resulting in inaccurate positioning, and effectively improve the stability of the groove wedge movement.

[0026] In one feasible implementation, the number of longitudinal positioning blocks 4 is at least two, preferably two, and the two longitudinal positioning blocks 4 are arranged along the length direction of the groove wedge to overcome the problem that the positioning is inaccurate due to the large length of the groove wedge and the deflection caused by the second positioning cylinder 3. Preferably, the line connecting the two longitudinal positioning blocks 4 is parallel to the length direction of the detection table 1, so that the length direction of the groove wedge is parallel to the length direction of the detection table 1.

[0027] Example 3 Based on any one of the implementation methods in Examples 1-2, further feasible specific implementation methods are proposed.

[0028] In one feasible implementation, the detection mechanism includes a mounting base 7, on which a longitudinal fixed baffle 10 and a longitudinal moving cylinder 8 are disposed. The longitudinal fixed baffle 10 and the longitudinal moving cylinder 8 are arranged in the longitudinal direction and located on both sides of the detection table 1. The longitudinal fixed baffle 10 is provided with A1 pen 20 and / or B1 pen 17, both of which are detection pens. The output shaft of the longitudinal moving cylinder 8 is provided with A2 pen 12 and / or B2 pen 13. A1 pen 20 and A2 pen 12 are used to detect the size A of the detection groove wedge, and B1 pen 17 and B2 pen 13 are used to detect the size B of the detection groove wedge. The longitudinal moving cylinder 8 is connected to a controller.

[0029] Specifically, the detection principles for size A and size B are the same; taking the detection of size A as an example, the principle is explained as follows.

[0030] like Figure 5 As shown, the initial distance between the longitudinal fixed baffle 10 and the longitudinal moving cylinder 8 is fixed, i.e., the initial distance is a; after the transplanting cylinder 6 moves, pen A1 20 abuts against the corresponding side of the slot wedge, and pen A1 20 is pushed and has displacement data b; after the longitudinal moving cylinder 8 moves pen A2 12 a set distance c, pen A2 12 is pushed against the corresponding side of the slot wedge, and pen A2 12 has displacement data d; according to A=acmn; where m is the total length remaining after pen A1 20 is pushed, and n is the total length remaining after pen A2 12 is pushed; therefore, under the condition that a and c are constant values, the value of A is directly related to b and d; that is, after the controller obtains the values ​​of b and d, it compares them with the set data. If they are the same or within the error, the dimension A of the slot wedge is qualified; otherwise, the dimension A of the slot wedge is unqualified.

[0031] In one feasible implementation, the detection mechanism includes a mounting base 7, on which a vertical fixed baffle 11 is provided. The vertical fixed baffle 11 is arranged in the vertical direction and located below the detection table 1. The vertical fixed baffle 11 is provided with a G pen 19 and / or an H pen 18, both of which are detection pens. The G pen 19 detects the inclined angle G of the groove wedge, and the H pen 18 detects the inclined angle H of the groove wedge.

[0032] Specifically, the detection principles for inclined plane angle G and inclined plane angle H are the same; taking the detection of inclined plane angle H as an example, the principle is explained as follows.

[0033] like Figure 6 As shown, after the transplanting cylinder 6 moves, the H pen 18 abuts against the inclined surface of the groove wedge, and the H pen 18 is pushed to have displacement data h; under the two conditions of dimension B and the bottom surface of the groove wedge (the surface of the detection table 1), the inclined surface angle H is linearly related to the data h; that is, after the controller obtains the h value, it compares it with the set data. If they are the same or within the error, the inclined surface angle H of the groove wedge shape is qualified; otherwise, the inclined surface angle H of the groove wedge shape is unqualified.

[0034] In one feasible implementation, the detection mechanism includes a mounting base 7, on which a vertically moving cylinder 9 is mounted. The vertically moving cylinder 9 is arranged in the vertical direction and located above the detection platform 1. An E pen 14 and / or a C pen 15 and / or an F pen 16 are mounted on the output end of the vertically moving cylinder 9. The E pen 14, C pen 15, and F pen 16 are all detection pens. The E pen 14 detects the slope angle E of the groove wedge, the C pen 15 detects the size C of the groove wedge, and the F pen 16 detects the slope angle F of the groove wedge. The vertically moving cylinder 9 is connected to a controller.

[0035] The detection principles for inclined plane angles E and F are the same as those for inclined plane angle H, except that the reference conditions for determining dimensions A and B are the same. The detection principle for dimension C is the same as that for dimension A, except that the reference base is the bottom surface of the groove wedge, i.e., the surface of detection table 1.

[0036] In one feasible implementation, the detection mechanism includes a mounting base 7, on which a D-pen 21 is mounted. The D-pen 21 is a detection pen, and the D-pen 21 on the two transplanting cylinders 6 cooperates with each other to detect the dimension D of the groove wedge. The detection principle of dimension D is the same as that of dimension A.

[0037] Optionally, the aforementioned mounting base 7 can be the same mounting base 7, which is not shown in the figure; the detection pen is a contact displacement sensor; the longitudinal fixed baffle 10 and the vertical fixed plate can both be replaced by another longitudinal moving cylinder 8, with the same detection principle, and will not be explained further here.

[0038] Example 4 A method for automatically detecting the external dimensions of a slotted wedge, using the apparatus for automatically detecting the external dimensions of a slotted wedge as described in any one of Examples 1-3, includes the following steps: S1: Place the slot wedge to be tested on the testing table 1; S2: The controller controls the first positioning cylinder 2 to act on the other end of the slot wedge, pushing the slot wedge so that one end of the slot wedge abuts against the transverse positioning block 5; then the second positioning cylinder 3 acts on the other side of the slot wedge, pushing the slot wedge so that one side of the slot wedge abuts against the longitudinal positioning block 4; thus completing the positioning of the slot wedge. S3: The controller controls the transplanting cylinder 6 to move to the set displacement. After the movement is completed, the two D-pen 21 abut against the two end faces of the groove wedge respectively, the G-pen 19 and H-pen 18 abut against the lower inclined surface of the groove wedge respectively, and the A1-pen 20 and B1-pen 17 abut against the side surface of the groove wedge respectively. S4: The controller drives the longitudinal moving cylinder 8 and the vertical moving cylinder 9 respectively, so that the longitudinal moving cylinder 8 moves to a set displacement and the vertical moving cylinder 9 moves to a set displacement. After the movement is completed, pen E 14 and pen F 16 respectively abut against the inclined surface of the groove wedge; pen C 15 abuts against the top surface of the groove wedge; pen A2 12 and pen B2 13 respectively abut against the side surface of the other side of the groove wedge. S5: Obtain the data from each testing pen and compare it with the set data. If they are the same or within the error range, the groove wedge's outer dimensions are qualified; otherwise, the groove wedge's outer dimensions are unqualified.

[0039] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A device for automated detection of the external dimensions of a slotted wedge, characterized in that: The system includes a testing platform (1), on which a positioning mechanism is provided. The positioning mechanism positions the slot wedge so that the length direction of the slot wedge is parallel to the length direction of the testing platform (1). At both ends of the testing platform (1), there are transplanting cylinders (6). The output end of the transplanting cylinder (6) is equipped with a testing mechanism. The transplanting cylinder (6) enables the testing mechanism to move along the length direction of the testing platform (1). The testing mechanism is equipped with multiple testing pens, each of which is used to contact the surface of the slot wedge. The transplanting cylinder (6), the testing mechanism, and the positioning mechanism are all connected to the controller.

2. The apparatus according to claim 1, characterized in that: The positioning mechanism includes a transverse positioning block (5) at one end of the testing table (1) and a longitudinal positioning block (4) at the side. A first positioning cylinder (2) is provided at the other end of the testing table (1), and a second positioning cylinder (3) is provided at the other side.

3. The apparatus according to claim 2, characterized in that: The number of the second positioning cylinder (3) is at least 2.

4. The apparatus according to claim 2, characterized in that: The number of the longitudinal positioning blocks (4) is at least 2.

5. The apparatus according to claim 1, characterized in that: The detection mechanism includes a mounting base (7), on which a longitudinal fixed baffle (10) and a longitudinal moving cylinder (8) are provided. The longitudinal fixed baffle (10) and the longitudinal moving cylinder (8) are arranged in the longitudinal direction and located on both sides of the detection table (1). An A1 pen (20) or / and a B1 pen (17) are provided on the longitudinal fixed baffle (10). Both the A1 pen (20) and the B1 pen (17) are detection pens. An A2 pen (12) or / and a B2 pen (13) are provided on the output shaft of the longitudinal moving cylinder (8). The A1 pen (20) and the A2 pen (12) are matched with the size A of the detection slot wedge, and the B1 pen (17) and the B2 pen (13) are matched with the size B of the detection slot wedge. The longitudinal moving cylinder (8) is connected to the controller.

6. The apparatus according to claim 1, characterized in that: The detection mechanism includes a mounting base (7), on which a vertical fixed baffle (11) is provided. The vertical fixed baffle (11) is arranged in the vertical direction and located below the detection table (1). A G pen (19) or / and an H pen (18) are provided on the vertical fixed baffle (11). Both the G pen (19) and the H pen (18) are detection pens. The G pen (19) detects the slope angle G of the groove wedge, and the H pen (18) detects the slope angle H of the groove wedge.

7. The apparatus according to claim 1, characterized in that: The detection mechanism includes a mounting base (7), on which a vertical moving cylinder (9) is provided. The vertical moving cylinder (9) is arranged in the vertical direction and located above the detection table (1). An E pen (14) or / and a C pen (15) or / and an F pen (16) are provided on the output end of the vertical moving cylinder (9). The E pen (14), C pen (15) and F pen (16) are all detection pens. The E pen (14) detects the slope angle E of the groove wedge, the C pen (15) detects the size C of the groove wedge, and the F pen (16) detects the slope angle F of the groove wedge. The vertical moving cylinder (9) is connected to the controller.

8. The apparatus according to claim 1, characterized in that: The detection mechanism includes a mounting base (7), on which a D pen (21) is provided. The D pen (21) is a detection pen, and the D pens (21) on the two transplant cylinders (6) cooperate with each other to detect the size D of the groove wedge.

9. The apparatus according to any one of claims 1-6, characterized in that: The detection pen is a contact displacement sensor.

10. A method for automated detection of the external dimensions of a slotted wedge, characterized in that: The apparatus for automated detection of the external dimensions of the slot wedge as described in any one of claims 1-9 includes the following steps: S1: Place the slot wedge to be tested on the testing table (1); S2: The controller controls the first positioning cylinder (2) to act on the other end of the slot wedge, pushing the slot wedge so that one end of the slot wedge abuts against the transverse positioning block (5); then the second positioning cylinder (3) acts on the other side of the slot wedge, pushing the slot wedge so that one side of the slot wedge abuts against the longitudinal positioning block (4); thus completing the positioning of the slot wedge. S3: The controller controls the transplanting cylinder (6) to move to the set displacement. After the movement is completed, the two D pens (21) abut against the two end faces of the groove wedge respectively, the G pen (19) and H pen (18) abut against the lower inclined surface of the groove wedge respectively, and the A1 pen (20) and B1 pen (17) abut against the side surface of the groove wedge respectively. S4: The controller drives the longitudinal moving cylinder (8) and the vertical moving cylinder (9) respectively, so that the longitudinal moving cylinder (8) moves to a set displacement and the vertical moving cylinder (9) moves to a set displacement. After the movement is completed, the E pen (14) and the F pen (16) respectively abut against the inclined surface of the slot wedge; the C pen (15) abuts against the top surface of the slot wedge; the A2 pen (12) and the B2 pen (13) respectively abut against the side surface of the other side of the slot wedge. S5: Obtain the data from each testing pen and compare it with the set data. If they are the same or within the error range, the groove wedge's outer dimensions are qualified; otherwise, the groove wedge's outer dimensions are unqualified.

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