A latch rotation mechanism

Abstract

The utility model provides a kind of bolt rotating mechanism, including measurement pedestal, the shaft support component of symmetrical arrangement, bolt rotating mechanism, servo moving assembly and gauge support component.Bolt rotating mechanism is rigidly connected by push-out air cylinder to push bolt mechanism and motor shaft end face clamping groove, is rotated by servo motor drive, avoid the problem of skidding in traditional line contact transmission.Shift support component adopts double idler to support motor shaft outer circle, and servo moving assembly drives measuring piece to carry out bounce measurement.The utility model is simple in structure, transmission is stable, applicable to the precision bounce measurement of shaft class parts with oil or large weight, improve the reliability and repeatability of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft inspection tool technology, and in particular to a pin rotation mechanism. Background Technology

[0002] Motor shaft runout is one of the important indicators for evaluating motor quality and performance. In the process of motor production and maintenance, accurate measurement of motor shaft runout is of great significance for discovering manufacturing defects and preventing failures.

[0003] Currently, motor shaft runout measuring equipment often uses a transmission component to transmit torque through line contact with the motor shaft. However, since the surface of the motor shaft is often covered with oil, it is easy for the transmission to slip, resulting in unstable measurement data and affecting the measurement accuracy and reliability. Therefore, there is an urgent need to propose a new pin rotation mechanism to solve the above problems. Utility Model Content

[0004] This application addresses the shortcomings of the prior art by providing a pin rotation mechanism that can achieve a rigid connection with the motor shaft and prevent slippage, thereby improving the stability of the measurement process and the accuracy of the data.

[0005] The technical solution adopted in this utility model is as follows: A pin rotation mechanism includes a measuring base, on which shaft support assemblies are centrally symmetrically arranged. Two sets of shaft support assemblies rotatably support motor shafts. One end of the measuring base is provided with a pin rotation mechanism that is rigidly connected to and drives the motor shaft to rotate. The other end of the measuring base is provided with a servo moving assembly. The free end of the servo moving assembly is provided with a gauge support assembly. A measuring element is provided on the gauge support assembly. The measuring element extends into the motor shaft through the servo moving assembly to measure the runout of the motor shaft.

[0006] Furthermore, each of the shaft support assemblies includes a support frame mounted on a measuring base, a wheel and axle base mounted on the support frame, and a pair of idler wheels rotatably arranged on the wheel and axle base.

[0007] Furthermore, the pin rotation mechanism includes a push-out cylinder disposed at one end of the measuring base, a guide rail disposed on the measuring base, a first slide table slidably disposed on the guide rail, the first slide table being fixedly connected to the drive end of the push-out cylinder, a pin mechanism being disposed on the first slide table, and a rotation mechanism being disposed below the measuring base, the rotation mechanism driving the pin mechanism to rotate.

[0008] Furthermore, the pin mechanism includes a bearing housing disposed on the first slide, a bearing assembly disposed inside the bearing housing, a main shaft rotatably disposed through the bearing housing, a positioning bearing disposed at the center of the shaft end of the main shaft facing the motor shaft, and a pin disposed offset on the end face of the shaft end of the main shaft, the body of the pin being slidably disposed inside the shaft end of the main shaft by means of a spring, and the protruding end of the pin being able to be inserted into the corresponding opposite slot of the motor shaft.

[0009] Furthermore, a waist-shaped groove is provided in the cavity where the spindle end pin slides, and a limit pin is provided on the side of the pin.

[0010] Furthermore, the rotating mechanism includes a first servo motor disposed below the measuring base, the drive end of the first servo motor being connected to a spline transmission mechanism, and the spline transmission mechanism being transmitted to the main shaft via a belt transmission mechanism.

[0011] Furthermore, the servo movement assembly includes a second servo motor disposed at the other end of the measuring base and a lead screw rotatably disposed via a bearing housing, wherein a nut block is threadedly connected to the lead screw.

[0012] Furthermore, the gauge support assembly includes a second slide fixed on the nut block, and a measuring element is disposed on the second slide.

[0013] The advantages of this utility model over the prior art are as follows: This invention utilizes a simple and convenient pin-rotation mechanism designed with a slot on the end face of the motor shaft. A cylinder pushes the pin mechanism to rigidly connect it to the slot on the motor shaft end face, and the rotation is driven by a servo motor, avoiding the slippage problem of traditional line contact transmissions. The shaft support assembly uses double idler wheels to support the outer circle of the motor shaft, and a servo moving component drives the measuring component to perform runout measurement. This invention features a simple structure and stable transmission, making it suitable for precision runout measurement of oiled or heavy shaft parts, improving the reliability and repeatability of measurement data. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a schematic diagram of the pin rotation mechanism in this utility model; Figure 4 This is a schematic diagram of the central axis support assembly of this utility model; Figure 5 This is a front view of the pin mechanism in this utility model; Figure 6 This is a schematic diagram of the internal structure of the pin mechanism in this utility model; Figure 7 A partial schematic diagram illustrating the rigid connection established by the pin mechanism in this utility model; Figure 8 This is a schematic diagram of the rotating mechanism in this utility model; Figure 9 This is a schematic diagram of the servo moving component and the fixture support component in this utility model.

[0015] Among them: 1. Measuring base; 2. Shaft support assembly; 21. Elevating base; 22. Wheel and axle base; 23. Idler wheel; 3. Pin rotation mechanism; 31. Push-out cylinder; 32. Guide rail; 33. First slide table; 34. Main spindle; 35. Positioning bearing; 36. Pin; 37. Spring; 38. Limit pin; 39. Induction sensor; 40. Induction plate; 4. Servo motion component; 41. Second servo motor; 42. Lead screw; 43. Nut block; 5. Rotating mechanism; 51. First servo motor; 52. Spline transmission mechanism; 53. Belt transmission mechanism; 6. Fixture support assembly; 61. Second slide; 62. Measuring piece; 7. Motor shaft. Detailed Implementation

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0017] like Figures 1 to 9 As shown, this utility model provides a pin rotation mechanism, which includes a measuring base 1. The measuring base 1 is centrally and symmetrically provided with shaft support assemblies 2. Two sets of shaft support assemblies 2 rotatably support motor shafts 7. One end of the measuring base 1 is provided with a pin rotation mechanism 3 that is rigidly connected to and drives the motor shaft 7 to rotate. The other end of the measuring base 1 is provided with a servo moving assembly 4. The free end of the servo moving assembly 4 is provided with a gauge support assembly 6. The gauge support assembly 6 is provided with a measuring element 62. The measuring element 62 extends into the motor shaft 7 through the servo moving assembly 4 and performs runout measurement of the motor shaft 7.

[0018] In one embodiment of the present invention, each set of shaft support components 2 includes a support base 21 disposed on a measuring base 1, a wheel and axle base 22 disposed on the support base 21, and a pair of idler wheels 23 rotatably arranged on the wheel and axle base 22.

[0019] In one embodiment of this utility model, the pin rotation mechanism 3 includes a push-out cylinder 31 disposed at one end of the measuring base 1, a guide rail 32 disposed on the measuring base 1, a first slide 33 slidably disposed on the guide rail 32, the first slide 33 being fixedly connected to the drive end of the push-out cylinder 31, and a pin mechanism also disposed on the first slide 33. A rotation mechanism 5 is disposed below the measuring base 1, and the rotation mechanism 5 drives the pin mechanism to rotate.

[0020] In one embodiment of this utility model, the pin mechanism includes a bearing seat disposed on a first slide 33, a bearing assembly disposed inside the bearing seat, a main shaft 34 rotatably disposed through the bearing seat, a positioning bearing 35 disposed at the center of the shaft end of the main shaft 34 facing the motor shaft 7, and a pin 36 offsetly disposed on the end face of the shaft end of the main shaft 34. The body of the pin 36 is slidably disposed inside the shaft end of the main shaft 34 by a spring 37, and the protruding end of the pin 36 can be inserted into the corresponding opposite slot of the motor shaft 7.

[0021] In one embodiment of the present invention, a waist-shaped groove is provided in the cavity where the pin 36 at the end of the spindle 34 slides, and a limiting pin 38 is provided on the side of the pin 36.

[0022] In one embodiment of this utility model, the rotating mechanism 5 includes a first servo motor 51 disposed below the measuring base 1. The drive end of the first servo motor 51 is connected to a spline transmission mechanism 52, and the spline transmission mechanism 52 is transmitted to the main shaft 34 through a belt transmission mechanism 53.

[0023] In one embodiment of the present invention, the servo moving component 4 includes a second servo motor 41 disposed at the other end of the measuring base 1 and a lead screw 42 rotatably disposed via a bearing seat, wherein a nut block 43 is threadedly connected to the lead screw 42.

[0024] In one embodiment of the present invention, the gauge support assembly 6 includes a second slide 61 fixed on the nut block 43, and a measuring element 62 is provided on the second slide 61.

[0025] The specific structure and working principle of this utility model are as follows: In a preferred embodiment, the present invention includes a measuring base 1, on which two sets of shaft support assemblies 2 are symmetrically arranged for supporting the motor shaft 7. Each set of shaft support assemblies 2 includes a support frame 21, a wheel axle base 22, and a pair of idler wheels 23, the idler wheels 23 providing support.

[0026] The measuring base 1 has a pin rotation mechanism 3 at one end, including a push-out cylinder 31, a guide rail 32, a first slide 33, and a pin mechanism. The push-out cylinder 31 pushes the first slide 33 to move along the guide rail 32, bringing the pin mechanism closer to the end face of the motor shaft 7. The pin mechanism includes a main shaft 34, with a positioning bearing 35 and a retractable pin 36 at the end of the main shaft 34. The pin 36 is pre-tightened by a spring 37 and can be aligned with the slot on the end face of the motor shaft 7 and inserted during rotation to form a rigid connection. Notably, a sensing plate 40 is also installed on the circumferential ring of the pin 36 using fasteners such as nuts and washers, and a sensing sensor 39 is also provided below the bearing seat. The sensing plate 40 transmits the state of whether the pin 36 is inserted and sends a signal to the control terminal through the sensing sensor 39.

[0027] A rotating mechanism 5 is provided below the measuring base 1, including a first servo motor 51, a spline transmission mechanism 52 and a belt transmission mechanism 53, which drives the pin 36 mechanism to rotate at low speed, thereby driving the motor shaft 7 to rotate synchronously.

[0028] The other end of the measuring base 1 is equipped with a servo moving assembly 4, which includes a second servo motor 41, a lead screw 42, and a nut block 43. A second slide 61 and a measuring element 62 are mounted on the nut block 43. The measuring element 62 is controlled by the servo moving assembly 4 to extend into the inner hole of the motor shaft 7 to perform runout measurement.

[0029] The work process is as follows: Step 1: Place the motor shaft 7 to be measured on the roller support mechanism; Step 2: Start the ejection cylinder 31 to push the pin mechanism to move towards the end face of the motor shaft 7, and position the positioning bearing 35 to contact the shaft end for positioning; Step 3: The first servo motor 51 starts, driving the pin mechanism to rotate, and the pin 36 is inserted into the slot of the motor shaft 7 under the action of the spring 37; Step 4: The motor shaft 7 rotates synchronously at low speed with the pin mechanism; Step 5: The servo moving component 4 pushes the measuring component 62 into the motor shaft 7 to perform runout measurement; Step 6: After the measurement is completed, the pin mechanism is disengaged, and the motor shaft 7 can be removed.

[0030] In summary, the structural solution provided by this utility model has the characteristics of simple structure and stable transmission, and is particularly suitable for rotational drive and measurement scenarios of oil-containing or large-mass shaft parts.

[0031] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A pin-rotating mechanism, characterized in that: The measuring base (1) includes a measuring base (1) with shaft support assemblies (2) arranged symmetrically at the center of the measuring base (1). Two sets of shaft support assemblies (2) support a motor shaft (7) rotating on them. One end of the measuring base (1) is provided with a pin rotating mechanism (3) that is rigidly connected to the motor shaft (7) and drives it to rotate. The other end of the measuring base (1) is provided with a servo moving assembly (4). The free end of the servo moving assembly (4) is provided with a fixture support assembly (6). The fixture support assembly (6) is provided with a measuring element (62). The measuring element (62) extends into the motor shaft (7) through the servo moving assembly (4) and performs motor shaft runout measurement.

2. The pin rotation mechanism as described in claim 1, characterized in that: Each of the shaft support assemblies (2) includes a support (21) mounted on a measuring base (1), a wheel and axle base (22) mounted on the support (21), and a pair of idler wheels (23) rotatably arranged on the wheel and axle base (22).

3. The pin rotation mechanism as described in claim 1, characterized in that: The pin rotation mechanism (3) includes a push-out cylinder (31) disposed at one end of the measuring base (1), a guide rail (32) disposed on the measuring base (1), a first slide (33) slidably disposed on the guide rail (32), the first slide (33) being fixedly connected to the drive end of the push-out cylinder (31), and a pin mechanism being disposed on the first slide (33). A rotation mechanism (5) is disposed below the measuring base (1), and the rotation mechanism (5) drives the pin mechanism to rotate.

4. The pin rotation mechanism as described in claim 3, characterized in that: The pin mechanism includes a bearing seat on the first slide (33), a bearing assembly is provided inside the bearing seat, a main shaft (34) is rotatably arranged through the bearing seat, a positioning bearing (35) is provided at the center of the shaft end of the main shaft (34) facing the motor shaft, and a pin (36) is also provided at the end face of the shaft end of the main shaft (34) at an offset position. The body of the pin (36) is slidably arranged inside the shaft end of the main shaft (34) by a spring (37), and the protruding end of the pin (36) can be inserted into the corresponding slot on the opposite side of the motor shaft.

5. The pin rotation mechanism as described in claim 4, characterized in that: The cavity in which the pin (36) at the end of the main shaft (34) slides is also provided with a waist-shaped groove, and a limit pin (38) is provided on the side of the pin (36).

6. The pin rotation mechanism as described in claim 5, characterized in that: The rotating mechanism (5) includes a first servo motor (51) disposed below the measuring base (1). The drive end of the first servo motor (51) is connected to a spline transmission mechanism (52), which is transmitted to the main shaft (34) via a belt transmission mechanism (53).

7. The pin rotation mechanism as described in claim 1, characterized in that: The servo moving assembly (4) includes a second servo motor (41) disposed at the other end of the measuring base (1) and a lead screw (42) rotatably disposed via a bearing seat, wherein a nut block (43) is threadedly connected to the lead screw (42).

8. The pin rotation mechanism as described in claim 7, characterized in that: The gauge support assembly (6) includes a second slide (61) fixed on the nut block (43), and a measuring element (62) is provided on the second slide (61).

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