Detection device

Abstract

An inspection apparatus is disclosed in which a moving portion moves from a first position to a second position with a first force and from the second position to a third position with a second force different from the first force, for detecting a processing state for a correct workpiece.

Description

TECHNICAL FIELD

[0001] The present invention relates to an inspection apparatus, and in particular, to an inspection apparatus capable of checking the correctness of an object to be inspected and a processing state thereof. BACKGROUND

[0002] Generally, an inspection apparatus in a production line is placed by an operator. However, after long time hard work, the operator is likely to place an incorrect object to be inspected or place it unsteadily, resulting in that the object to be inspected cannot be measured or a correct object to be inspected is misjudged as a defective product.

[0003] In view of the above problems, the present invention provides an inspection apparatus having a fool-proof function and capable of automatically inspecting a processing state of a processed object. SUMMARY

[0004] The present invention provides an inspection apparatus having a fool-proof function and capable of automatically inspecting a processing state of a processed object.

[0005] To achieve the above-mentioned object, the present invention provides an inspection apparatus, wherein a moving portion is moved from a first position to a second position with a first force and from the second position to a third position with a second force different from the first force, so as to inspect a processing state of a correct object.

[0006] Alternatively, the present invention provides an inspection apparatus, which comprises a control system, a position sensor and a moving portion. The control system controls the moving portion to move from a first position to a second position with a first force and controls the moving portion to move from the second position to a third position with a second force. The position sensor detects the movement of the moving portion, obtains the second position and generates a measurement signal. The control system is coupled to the position sensor and judges whether an object is a correct object according to the measurement signal. Furthermore, the moving portion is moved upward from the third position to the first position (or the second position) and is moved downward from the first position (or the second position) to a fourth position to contact the object with the first force after the second force is changed to the first force. The position sensor detects the movement of the moving portion, obtains the fourth position and generates a measurement signal. The control system judges a processing state of the correct object according to the measurement signals of the third position and the fourth position. The second force is different from the first force. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 Fig. 1 is a schematic view of an embodiment of the inspection system of the present invention;

[0008] Figure 2 Fig. 2 is a schematic view of a first embodiment of the movement of the moving portion of the inspection apparatus of the present invention;

[0009] Figure 3Schematic diagram of a second embodiment of the movement of the moving part of the inspection apparatus of the present application.

[0010] Figure 4 Flow chart of an embodiment of the inspection procedure of the inspection apparatus of the present application.

[0011] Symbol explanation

[0012] A First position

[0013] B Second position

[0014] C Third position

[0015] D Fourth position

[0016] F1 First force

[0017] F2 Second force

[0018] Z0 Preset distance

[0019] Z1 Preset distance

[0020] Z2 Preset distance

[0021] Z3 Preset distance

[0022] 10 Inspection apparatus

[0023] 11 Actuator

[0024] 12 Position sensor

[0025] 13 Workpiece carrier

[0026] 14 Moving part

[0027] 20 Collaborative device

[0028] 21 Manipulator

[0029] 22 Arm carrier

[0030] 30 Cabinet

[0031] 31 Control system

[0032] 40 Workpiece DETAILED DESCRIPTION

[0033] In order to achieve the above-mentioned objects, the technical means adopted by the present application and its effects are described below with examples and in conjunction with the accompanying drawings.

[0034] Please refer to Figure 1, which is a schematic diagram of an embodiment of the inspection system of the present application. As shown, the inspection system comprises an inspection device and a cooperating device 20, wherein the inspection device comprises an inspection apparatus 10 and a cabinet 30. In addition, the inspection system can not comprise the cooperating device 20, but instead manually select a workpiece 40 to be placed to the inspection device. The cooperating device 20 comprises a robot arm 21 and an arm support 22, which provides a place for the robot arm 21 to be placed, and rollers can be additionally provided below the arm support 22 to adjust the stationary point in coordination with the working range of the robot arm 21. The robot arm 21 comprises a plurality of shaft arms, for example, 6 shaft arms, but the number of shaft arms is not limited by the embodiment. A base of the robot arm 21 is fixed to the arm support 22, and a tool, for example, comprising a plurality of clamps, is installed at an end of the robot arm 21 to take and place a workpiece 40. In other words, the present application can inspect whether a human or the robot arm 21 places a correct workpiece 40 and whether the workpiece 40 is properly placed.

[0035] The inspection apparatus 10 of the inspection device is arranged on the upper surface of the cabinet 30, and the cabinet 30 comprises a control system 31 and other required circuits and the like inside. The inspection apparatus 10 comprises an actuator 11, a position sensor 12, a workpiece support 13, and a moving part 14. Figure 1 The embodiment shows that the actuator 11 and the position sensor 12 are selected to be placed in the same mechanism, the actuator 11 can be, for example, a servo motor, the position sensor 12 can be, for example, an encoder, and the moving part 14 can be, for example, an electric cylinder. The actuator 11 controls the movement of the moving part 14, the position sensor 12 is coupled to the control system 31 and detects the movement of the moving part 14 to obtain the position information of the moving part 14 at the moment, so that the control system 31 can determine whether the placed workpiece 40 is correct and determine the processing state of the workpiece 40 according to the position information of the moving part 14 at the moment, to achieve the functions of foolproofing and inspection. The workpiece 40 is placed on the workpiece support 13, and can be an assembly of a stator and a rotor, so the processing state of the workpiece 40 is the assembly state or assembly quality of the stator and the rotor, but the aforementioned workpiece type is only an example and is not limited by the embodiment. The current embodiment shows that the moving part 14 moves vertically up and down, but Figure 1 The embodiment can modify the architecture of the inspection apparatus 10 to make the moving part 14 move horizontally left and right (or forward and backward), and the description is not limited by the embodiment.

[0036] Please refer to Figure 2Fig. 1 is a schematic diagram of a first embodiment of a motion of a moving part of a detection apparatus of the present application. The motion positions of the moving part 14 in the detection system include a first position A, a second position B, a third position C and a fourth position D. The first position A is the starting point of the motion of the moving part 14, and the second position B is the point where the moving part 14 starts to contact the workpiece 40. In other words, the distance between the first position A and the second position B can be adjusted and preset according to different requirements when the moving part 14 does not contact the workpiece 40, i.e. the first position A is the position where the moving part 14 does not contact the workpiece 40. The third position C is the point where the moving part 14 stops pressing the workpiece 40, and the fourth position D is the point where the workpiece 40 rebounds from the third position C, i.e. the point where the workpiece 40 rebounds after the moving part 14 stops pressing the workpiece 40. Figure 1 The embodiment is a detection apparatus 10 of a longitudinal structure, so the third position C is the point where the moving part 14 stops pressing the workpiece 40. The fourth position D is the point where the workpiece 40 rebounds from the third position C, i.e. the point where the workpiece 40 rebounds after the moving part 14 stops pressing the workpiece 40.

[0037] The control system 31 is coupled to the actuator 11 and controls the operation of the actuator 11, so that the actuator 11 connects the moving part 14 and drives the moving part 14 to move. Therefore, the actuator 11 of the detection apparatus 10 drives the moving part 14 to move downward and press the workpiece 40 with different forces, such as 10 kg, 100 kg, etc. In order to detect whether the workpiece 40 is the correct workpiece to be tested, the moving part 14 of the detection apparatus 10 moves from the first position A to the second position B with a first force F1. Furthermore, in order to check the processing state of the workpiece 40, the moving part 14 moves from the second position B to the third position C with a second force F2, and the second force F2 is different from the first force F1, wherein the first force F1 can be a detection force, and the second force F2 can be a pressing force. In other words, the pressing force is the force used to press and assemble the stator and the rotor, and the detection force is not used for assembly, so it is smaller than the pressing force.

[0038] When the moving part 14 contacts the workpiece 40 at the second position B, the position sensor 12 detects the movement of the moving part 14 and obtains the position information of the second position B, and generates a measurement signal. A preset distance Z0 between the first position A and the second position B can be set according to the different workpieces 40, for example, equal to 30 mm. Thus, the control system 31 coupled to the position sensor 12 can determine whether the workpiece 40 is a correct workpiece, i.e., a correct workpiece to be measured, according to whether the measurement signal is equal to the preset distance Z0. After the moving part 14 moves downward to the second position B at the first force Fl and contacts the workpiece 40, the control system 31 controls the moving part 14 to continue to press downward and drives the moving part 14 to change the pressing force, so that the moving part 14 moves downward to the third position C at the second force F2 and presses the workpiece 40, wherein the second position B is higher than the third position C. Due to the downward pressing of the moving part 14, the contact surface between the moving part 14 and the workpiece 40 is lowered from the second position B to the third position C. Thus, the position sensor 12 detects the movement of the moving part 14 and obtains the position information of the third position B, to generate a measurement signal. In addition, a preset distance Zl between the second position B and the third position C can be set according to the different workpieces 40, for example, equal to 7.10 mm, and if the pressing exceeds the preset distance Zl, it can be determined that the workpiece 40 has a flaw in the machining state after machining.

[0039] Furthermore, if the pressing does not exceed the preset distance Zl, the moving part 14 is lifted from the third position C to the first position A, and the detection device 10 controls the moving part 14 to change from the second force F2 to the first force Fl, and then moves downward from the first position A to the fourth position D at the first force Fl to contact the position of the workpiece 40 rebounding. Similarly, the position sensor 12 detects the movement of the moving part 14 and obtains the position information of the fourth position D, to generate a measurement signal. Thus, the control system 31 determines the machining state of the workpiece 40 according to the measurement signals of the third position C and the fourth position D. The preset distance Z2 between the first position A and the fourth position D is equal to 37.05 mm, and the fourth position D is located between the second position B and the third position C.

[0040] Based on the above Figure 2 In the embodiment, the moving part 14 can be lifted to a position that ensures that it does not hinder the rebound of the workpiece 40. Therefore, please refer to Figure 3 which is a schematic view of the second embodiment of the movement of the moving part of the detection device. As shown in the figure, the preset distance Zl between the second position B and the third position C can be equal to 0.10 mm (i.e., less than Zl of the first embodiment, or can be selected as 0.10 mm≤Zl≤7.10 mm), and the moving part 14 can be lifted to the second position B without further upward movement, i.e., the preset distance between the other lifting position of the moving part 14 and the fourth position D is Z3 of Figure 3 , instead of Figure 2Z2. Furthermore, the preset distance Z3 between the second position B and the fourth position D can be equal to 0.05 mm.

[0041] Referring to Figure 4 Fig. 6 is a flow chart of an embodiment of the inspection procedure of the detection apparatus. After the workpiece 40 is finished with the machining, the inspection procedure S10 can be started. At step Sll, the operator of the production line selects (or inputs) the workpiece specification to be worked on (e.g. inspected) at the control system 31. Thus, at step S12, the control system 31 selects from the stored data according to the specification of the workpiece 40 and generates the preset positions of the first position A, the second position B, the third position C and the fourth position D, wherein the stored data can be the relevant data of various unassembled or assembled workpieces 40 established beforehand. After the detection system is initially set, at step S13, the control moving part 14 moves from the first position A to the second position B with the first force Fl to contact the workpiece 40. Then, at step S14, the position sensor 12 measures the distance moved by the control moving part 14 and records the second position B for the control system 31 to calculate whether the distance between the first position A and the second position B is equal to the preset distance Z0 to check whether the workpiece 40 to be inspected is the correct workpiece or is placed correctly.

[0042] As mentioned above, if the preset distance Z0 is exceeded, at step S15, the operator is notified of the misplacement of the workpiece 40 and the control system 31 controls the control moving part 14 to return to the starting point, which can be the first position A in the embodiment or other position selected by the operator, and the control system 31 can still automatically perform the next inspection. If the preset distance Z0 is equal, at step S16, the control moving part 14 moves from the second position B to the third position C with the second force F2 to press the workpiece 40. At step S17, after detection by the position sensor 12, the control system 31 records the third position C and controls the control moving part 14 to return from the third position C to the first position A (or the second position B). At step S18, the control moving part 14 moves from the first position A (or the second position B) to the fourth position D with the first force Fl to contact the workpiece 40, and after detection by the position sensor 12, the control system 31 records the fourth position D. At this time, at step S19, the control system 31 can determine the machining state of the workpiece 40 according to the records (i.e. position information) of the third position C and the fourth position D output by the position sensor 12.

[0043] In the steps S16 to S19 in the inspection procedure, the moving part 14 continuously moves while continuously maintaining the force caused by the driving of the actuator 11, and the position sensor 12 can continuously output the movement information of the moving part 14 with the movement of the moving part 14, so that the control system 31 continuously obtains the position information of the moving part 14. Therefore, the position sensor 12 can output the position information immediately after the moving part 14 reaches each specific position, or the position information of each specific position of the moving part 14 can be stored by the position sensor 12, and the position information of the third position C and the fourth position D is output to the control system 31 at the same time after the moving part 14 ends the required movement in the inspection, i.e. at the step S19. The system design change is a selectable matter, not limited by the embodiments. In addition, in the embodiments of the present application, if other inspection items are added, the inspection procedure can be modified according to the requirements, but the technical content of the present application is still implemented. Moreover, the numerical values described in the embodiments are still reasonable error values or error ranges in the actual operation of the detection system, which can be non-fixed values.

[0044] In summary, the present application provides an inspection apparatus, wherein a moving part moves from a first position to a second position with a first force, and moves from the second position to a third position with a second force different from the first force, so as to detect a processing state for a correct workpiece.

[0045] Alternatively, the present application provides an inspection apparatus, which comprises a control system, a position sensor and a moving part. The control system controls the moving part to move from a first position to a second position with a first force, and controls the moving part to move from the second position to a third position with a second force. The position sensor detects the movement of the moving part, obtains the second position to generate a measurement signal. The control system is coupled to the position sensor, and determines whether a workpiece is a correct workpiece according to the measurement signal. Furthermore, the moving part moves upward from the third position to the first position (or the second position), and then moves downward from the first position (or the second position) to a fourth position to contact the workpiece with the first force after changing the second force to the first force. The position sensor detects the movement of the moving part, obtains the fourth position to generate the measurement signal. The control system determines a processing state of the correct workpiece according to the measurement signals of the third position and the fourth position. The second force is different from the first force.

[0046] The above-described embodiments are only used to facilitate the description of the present application, and the scope of the present application is not limited to these embodiments. Any changes made according to the present application without departing from the spirit of the present application are within the scope of the present application.

Claims

1. An inspection apparatus comprising: a moving portion moving from a first position to a second position with a first force, and moving from the second position to a third position with a second force different from the first force, wherein the moving portion contacts a workpiece with the first force when moving downward to the second position, the first position being a starting point and a position not contacting the workpiece, a position sensor detecting movement of the moving portion to obtain the second position to generate a measurement signal; and a control system coupled to the position sensor to determine whether the workpiece is a correct workpiece based on the measurement signal. the moving portion contacts the workpiece with the second force when moving downward to the third position, the second position being higher than the third position.

2. The detection device of claim 1, wherein, a contact surface of the moving portion with the workpiece is lowered from the second position to the third position, the position sensor detects movement of the moving portion to obtain the third position to generate the measurement signal.

3. The detection device of claim 2, wherein, a distance from the second position to the third position is equal to 0.10 mm or 7.10 mm.

4. The detection device of claim 3, wherein, the moving portion moves upward from the third position to the first position or a second position, changes from the second force to the first force, and moves downward from the first position or the second position to a fourth position with the first force to contact the workpiece.

5. The detection device of claim 3, wherein, a distance from the second position to the fourth position is equal to 0.05 mm, the fourth position being between the second position and the third position.

6. The detection device of claim 5, wherein, 7. The inspection apparatus of claim 5, wherein the position sensor detects movement of the moving portion to obtain the fourth position to generate the measurement signal, and the control system determines a processing state of the workpiece based on the measurement signals of the third position and the fourth position. the control system selects a predetermined position of the first position, the second position, the third position, and the fourth position based on the workpiece.

8. The detection device of claim 7, wherein, ​

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