High-precision feeding and positioning device for rotating shaft machining

Abstract

The utility model discloses a kind of high-precision feeding positioning devices for shaft machining, belong to shaft machining equipment technical field, including bottom plate, platform, track assembly and slidingly connected rail clamping fixed on bottom plate, further including feeding mechanism and positioning mechanism, the feeding mechanism includes motor one and gear two engaged with rack rail in track assembly, the motor one drives gear two rotation to drive platform moves along track assembly, the positioning mechanism includes motor two, transmission rod and laser range finder, the motor two drives transmission rod and drives laser range finder up and down movement, the laser range finder is electrically connected to the motor one, for measuring material distance and control the motor one stop. The utility model is through the closed-loop control of laser range finder and motor one, high-precision positioning is realized, and simultaneously through motor two and drive laser range finder lifting, the applicability of device to different diameter shafts is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft processing equipment technology, and in particular to a high-precision feeding and positioning device for rotating shaft processing. Background Technology

[0002] In the automated production process of rotary shaft machining, automatically transporting the rotary shaft workpiece to the machining station and accurately positioning it is an important prerequisite for ensuring the quality of subsequent processing and improving production efficiency. Existing automated feeding devices, such as push rod feeders and belt conveyor mechanisms, still have shortcomings in achieving high-precision positioning.

[0003] Some feeding devices rely on mechanical limit blocks and simple open-loop control systems to stop the movement of the rotating shaft. This method is limited by mechanical structure and transmission errors, and the actual stopping position of the rotating shaft will deviate significantly from the target position due to impact, wear and control delay. It is difficult to meet the strict requirements of high-precision machining for the initial position of the workpiece.

[0004] The existing solution is to use photoelectric sensors and proximity switch detection elements to sense the position of the rotating shaft. However, the installation height of these sensors is fixed. When facing rotating shaft workpieces of different diameters, the fixed sensors cannot accurately align with the center of the end face of the rotating shaft for measurement. Instead, they detect the edge of the cylindrical surface of the rotating shaft, which introduces measurement errors and leads to inaccurate positioning. This design with poor adaptability to changes in workpiece specifications severely limits the flexible application range of the device.

[0005] Therefore, this utility model proposes a high-precision feeding and positioning device for shaft machining to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of low positioning accuracy, difficulty in automation control, and poor applicability of high-precision feeding and positioning devices for rotary shaft machining in the prior art, this utility model aims to provide a high-precision feeding and positioning device for rotary shaft machining with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a high-precision feeding and positioning device for rotary shaft processing, comprising: a base plate on which a track assembly is fixedly connected, the track assembly including a slide rail and a gear rail; a platform fixedly connected to a clamping rail, the clamping rail being slidably connected to the slide rail; and a feeding mechanism and a positioning mechanism.

[0008] The feeding mechanism includes a fixed plate, a motor, a connecting rod, a gear, a gear, a connecting rod, a bearing, and a bearing; the positioning mechanism includes a base, a motor, a sleeve, a transmission rod, a connecting piece, a screw, a screw, and a laser rangefinder.

[0009] Furthermore, the fixing plate is fixedly connected to the platform, and the first motor is fixedly connected below the fixing plate. The first motor drives the first gear to rotate through the first connecting rod, and the first gear meshes with the second gear. The first bearing and the second bearing are fixedly connected to the rail, and the first bearing and the second bearing are rotatably connected to the second connecting rod. The second connecting rod is fixedly connected to the second gear, and the second gear meshes with the rail. The base is fixedly connected to the base plate, and the second motor drives the transmission rod to extend and retract within the sleeve. The transmission rod is fixedly connected to the second screw and the connecting piece, and the connecting piece is fixedly connected to the laser rangefinder through the first screw. The laser rangefinder is electrically connected to the first motor and is used to send signals to control the first motor to stop rotating.

[0010] Preferably, the front end of the connecting rod is fixedly connected to the gear, and the rear end of the connecting rod is fixedly connected to the motor.

[0011] Preferably, the second gear is fixedly connected to the middle of the second connecting rod, the upper part of the second gear meshes with the first gear, and the lower part of the second gear meshes with the gear rail.

[0012] Preferably, there are two slide rails, which are located on the front and rear sides of the base plate, respectively, and the toothed rail is located in the upper center of the base plate.

[0013] Preferably, there are two guide rails, which are slidably connected to the two slide rails respectively, and the first bearing and the second bearing are fixedly connected to the upper left end of the two guide rails respectively.

[0014] Preferably, the sleeve is fixedly connected to the upper front end of the base, and the motor is fixedly connected to the upper rear end of the base.

[0015] Preferably, the transmission rod is rotatably connected inside the sleeve.

[0016] Preferably, the second motor, the sleeve, and the transmission rod together constitute an electric actuator structure, used to drive the laser rangefinder to move up and down.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problems of low feeding and positioning accuracy and difficulty in automatic control in the prior art by setting up a feeding mechanism and a positioning mechanism, and electrically connecting the laser rangefinder in the positioning mechanism to the drive motor of the feeding mechanism. When the laser rangefinder measures a predetermined distance, it sends a signal to control the drive motor to stop. This achieves the technical effect of high-precision and automatic positioning through laser closed-loop feedback control.

[0019] 2. This utility model solves the problem in the prior art where the positioning device has a fixed measuring point, making it difficult to adapt to workpieces of different diameters and resulting in poor applicability. It achieves the technical effect of flexibly adjusting the measuring height of the laser rangefinder to ensure that it is always aligned with the end face of the workpiece, thereby improving the applicability and measurement accuracy of the device. Attached Figure Description

[0020] Figure 1 This is a perspective view of a high-precision feeding and positioning device for shaft machining proposed in this utility model;

[0021] Figure 2 This is a top view of a high-precision feeding and positioning device for shaft machining proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the feeding mechanism in a high-precision feeding and positioning device for rotating shaft processing proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning mechanism in a high-precision feeding and positioning device for shaft machining proposed in this utility model.

[0024] Legend:

[0025] 1. Platform; 2. Base plate; 3. Feeding mechanism; 31. Motor 1; 32. Fixing plate; 33. Bearing 1; 34. Connecting rod 1; 35. Gear 1; 36. Gear 2; 37. Connecting rod 2; 38. Bearing 2; 39. Track assembly; 391. Rail clamp; 392. Slide rail; 393. Gear rail; 4. Positioning mechanism; 41. Laser rangefinder; 42. Connecting piece; 43. Screw 1; 44. Screw 2; 45. Transmission rod; 46. Sleeve; 47. Motor 2; 48. Base. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Example:

[0028] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a high-precision feeding and positioning device for rotary shaft machining includes a base plate 2, a platform 1, and a track assembly 39 and a retaining rail 391 disposed between the base plate 2 and the platform 1. The base plate 2 serves as the mounting base for the entire device, and the platform 1 supports the rotary shaft workpiece. The track assembly 39 is fixedly connected to the base plate 2 and includes two slide rails 392 and one gear rail 393. The two slide rails 392 are located on the front and rear sides of the base plate 2, respectively, and the gear rail 393 is located in the upper middle part of the base plate 2. There are two retaining rails 391, which are slidably connected to the two slide rails 392, respectively. The platform 1 is fixedly connected above the two retaining rails 391. The high-precision feeding and positioning device for rotary shaft machining also includes a feeding mechanism 3 installed on the platform 1 for driving the platform 1 to move. The feeding mechanism 3 includes a fixed plate 32, a motor 31, a connecting rod 34, and a gear. Wheel 1 35, gear 2 36, connecting rod 2 37, bearing 1 33 and bearing 2 38, and fixing plate 32 are fixedly connected to platform 1. Motor 1 31 is fixedly connected to the bottom of fixing plate 32. Motor 1 31 is fixedly connected to the rear end of connecting rod 1 34, and gear 1 35 is fixedly connected to the front end of connecting rod 1 34. Motor 1 31 drives gear 1 35 to rotate through connecting rod 1 34. Gear 1 35 meshes with gear 2 36. Bearing 1 33 and bearing 2 38 are fixedly connected to the upper left end of two rails 391, respectively. Connecting rod 2 37 is rotatably connected to bearing 1 33 and bearing 2 38. Gear 2 36 is fixedly connected to the middle of connecting rod 2 37. Gear 2 36 meshes with gear 1 35 at the top and with rail 393 at the bottom. A high-precision feeding and positioning device for rotating shaft processing also includes a positioning mechanism 4 for achieving high-precision positioning.

[0029] Please refer to Figure 1 , Figure 2 and Figure 4The positioning mechanism 4 includes a base 48, a second motor 47, a sleeve 46, a transmission rod 45, a connecting piece 42, a first screw 43, a second screw 44, and a laser rangefinder 41. The base 48 is fixedly connected to the base plate 2, specifically located on the right side of the base plate 2. The second motor 47 is fixedly connected to the upper rear end of the base 48, and the sleeve 46 is fixedly connected to the upper front end of the base 48. The transmission rod 45 is rotatably connected inside the sleeve 46. The second motor 47, the sleeve 46, and the transmission rod 45 together constitute an electric push rod structure. The second motor 47 drives the transmission rod 45 to extend and retract within the sleeve 46. The upper end of the transmission rod 45 is fixedly connected to the connecting piece 42 by the second screw 44. The connecting piece 42 is fixedly connected to the laser rangefinder 41 by the first screw 43. The function of the positioning mechanism 4 is to drive the laser rangefinder 41 to move up and down to adjust the measurement height, thereby adapting to rotating shaft workpieces of different diameters.

[0030] During assembly and operation, the feeding mechanism 3 drives the platform 1, along with the rotating workpiece on the platform 1, to move toward the positioning mechanism 4. The fixedly installed laser rangefinder 41 is vertically aligned with the end face of the rotating workpiece on the platform 1 and measures the distance from the rotating workpiece on the platform 1 to the laser rangefinder 41 itself in real time. The laser rangefinder 41 is electrically connected to the motor 31 of the feeding mechanism 3. When the laser rangefinder 41 measures a distance that reaches a preset value, the laser rangefinder 41 sends a signal to control the motor 31 to stop rotating, the feeding mechanism 3 stops moving forward, and the platform 1 stops moving, thereby completing high-precision positioning.

[0031] As a preferred embodiment, please refer to Figure 3 In order to construct a clear power output path, the front end of the connecting rod 34 in the feeding mechanism 3 is fixedly connected to the gear 35, and the rear end of the connecting rod 34 is fixedly connected to the output shaft of the motor 31. When the motor 31 starts, it directly drives the connecting rod 34 and the gear 35 to rotate.

[0032] As another preferred embodiment, please refer to Figure 3 In order to convert the power into the linear motion of the platform 1, the middle part of the connecting rod 2 37 is fixedly connected to the gear 2 36. The upper part of the gear 2 36 is meshed with the gear 1 35 to receive the power, and the lower part of the gear 2 36 is meshed with the toothed rail 393 fixed on the base plate 2. The platform 1 is driven forward by the rolling of the gear 2 36 along the toothed rail 393.

[0033] As another preferred embodiment, please refer to Figure 2 In order to provide stable and precise guidance, the slide rails 392 in the track assembly 39 are preferably two slide rails 392, which are arranged in parallel and fixedly located on the front and rear sides of the base plate 2 respectively, while the toothed rail 393 is fixedly located in the upper middle part of the base plate 2, between the two slide rails 392.

[0034] As a further limitation on the above-described embodiments, please refer to... Figure 2 and Figure 3 In order to cooperate with the guide rail and install the transmission components, two rails 391 are also provided. The two rails 391 are slidably connected to the two slide rails 392 respectively. Furthermore, bearing 33 and bearing 38 are fixedly connected to the upper left end of the two rails 391 respectively, for rotating support connecting rod 37.

[0035] As another preferred embodiment, please refer to Figure 4 In order to securely install the lifting assembly of the positioning mechanism 4, a sleeve 46 is fixedly connected to the upper front end of the base 48, and a motor 47 is fixedly connected to the upper rear end of the base 48. The motor 47 and the sleeve 46 are together fixed on the base 48.

[0036] As another preferred embodiment, please refer to Figure 4 In order to transmit power from motor 47 to transmission rod 45, transmission rod 45 is rotatably connected inside sleeve 46. Motor 47 drives transmission rod 45 to rotate, lift and extend inside sleeve 46.

[0037] As another preferred embodiment, please refer to Figure 4 In order to form a standardized lifting actuator, the motor 47, the sleeve 46 and the transmission rod 45 together form an electric push rod structure. This structure is used to precisely drive the laser rangefinder 41 to move up and down to adjust the measurement height.

[0038] Working principle:

[0039] A slide rail 392 and a toothed rail 393 are fixedly connected to the top of the base plate 2. There are two slide rails 392, located on the front and rear sides of the base plate 2 respectively, and the toothed rail 393 is located in the upper middle part of the base plate 2.

[0040] Two sliding rails 391 are slidably connected above slide rails 392, each slidably connected to one of the two slide rails 392. A platform 1 is fixedly connected above the sliding rails 391. Bearing 1 33 and bearing 2 38 are fixedly connected to the upper left ends of the two sliding rails 391, respectively. A connecting rod 2 37 is rotatably connected to bearing 1 33 and bearing 2 38. A gear 2 36 is fixedly connected to the middle of the connecting rod 2 37. The lower part of gear 2 36 meshes with gear rail 393, and the upper part of gear 2 36 meshes with gear 1 35. The feeding mechanism 3 is composed of a gear 35 and a connecting rod 34. The front end of the connecting rod 34 is fixedly connected to the gear 35, and the rear end of the connecting rod 34 is fixedly connected to the motor 31. The bottom of the motor 31 is fixedly connected to the fixing plate 32, and the front of the fixing plate 32 is fixedly connected to the platform 1. The motor 31, the fixing plate 32, the bearing 33, the connecting rod 34, the gear 35, the gear 36, the connecting rod 37, the bearing 38, and the track assembly 39 together form the feeding mechanism 3.

[0041] A base 48 is fixedly connected to the right side of the base plate 2. A sleeve 46 is fixedly connected to the front end of the upper side of the base 48. A second motor 47 is fixedly connected to the rear end of the upper side of the base 48. A transmission rod 45 is rotatably connected inside the sleeve 46. The upper end of the transmission rod 45 is fixedly connected to the connecting piece 42 by a second screw 44. The connecting piece 42 is fixedly connected to the laser rangefinder 41 by a first screw 43. The laser rangefinder 41, the connecting piece 42, the first screw 43, the second screw 44, the transmission rod 45, the sleeve 46, the second motor 47, and the base 48 together form the positioning mechanism 4.

[0042] The operating logic of the feeding mechanism 3 is as follows: Motor 1 31 starts, driving connecting rod 1 34 to rotate. Connecting rod 1 34 and gear 1 35 are fixedly connected. Connecting rod 1 34 drives gear 1 35 to rotate. Gear 1 35 and gear 2 36 mesh. Gear 1 35 drives gear 2 36 to rotate. Gear 2 36 is meshed with a gear rail 393 below. Gear rail 393 is fixedly connected to the base plate 2. When gear 2 36 rotates on gear rail 393, it will drive gear 2 36 to move forward. Gear 2 36 is fixedly connected to connecting rod 2 37. Gear 2 36 drives connecting rod 2 37 to move forward. Connecting rod 2 37 is connected to rail 391 through bearing 1 33 and bearing 2 38. Connecting rod 2 37 drives rail 391 to slide forward on slide rail 392. Platform 1 is fixedly connected above rail 391. Platform 1 moves forward following rail 391.

[0043] The transmission rod 45, sleeve 46, motor 47, and base 48 are electric actuators. Motor 47 drives the transmission rod 45 and sleeve 46 to extend and retract, which in turn drives the laser rangefinder 41 to move up and down. After the laser rangefinder 41 reaches a specified height, it can measure the distance from the material on the platform 1 to itself. After the material reaches the specified position, the laser rangefinder 41 sends a signal to motor 31 to stop motor 31 from rotating, and the feeding mechanism 3 stops moving forward.

Claims

1. A high-precision feeding and positioning device for shaft machining, comprising: The base plate (2) is fixedly connected to a track assembly (39), which includes a clamping rail (391), a slide rail (392) and a toothed rail (393). Platform (1), which is fixedly connected to the rail (391), and the rail (391) is slidably connected to the slide rail (392). Its features are, The high-precision feeding and positioning device for shaft processing also includes a feeding mechanism (3) and a positioning mechanism (4). The feeding mechanism (3) includes a fixed plate (32), a motor (31), a connecting rod (34), a gear (35), a gear (36), a connecting rod (37), a bearing (33), and a bearing (38). The fixed plate (32) is fixedly connected to the platform (1), and the motor (31) is fixedly connected above the fixed plate (32). The motor (31) drives the gear (35) to rotate through the connecting rod (34), and the gear (35) meshes with the gear (36). The bearing one (33) and the bearing two (38) are fixedly connected to the rail (391). The bearing one (33) and the bearing two (38) are rotatably connected to the connecting rod two (37). The connecting rod two (37) is fixedly connected to the gear two (36). The gear two (36) meshes with the gear rail (393). The positioning mechanism (4) includes a base (48), a second motor (47), a sleeve (46), a transmission rod (45), a connecting piece (42), a first screw (43), a second screw (44), and a laser rangefinder (41). The base (48) is fixedly connected to the base plate (2), the second motor (47) drives the transmission rod (45) to extend and retract within the sleeve (46), the transmission rod (45) is fixedly connected to the connecting piece (42) by the second screw (44), and the connecting piece (42) is fixedly connected to the laser rangefinder (41) by the first screw (43); The laser rangefinder (41) is electrically connected to the motor (31), and the laser rangefinder (41) is used to send signals to control the motor (31) to stop rotating.

2. The high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, The front end of the connecting rod (34) is fixedly connected to the gear (35), and the rear end of the connecting rod (34) is fixedly connected to the motor (31).

3. The high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, The second gear (36) is fixedly connected to the middle of the second connecting rod (37). The upper part of the second gear (36) is meshed with the first gear (35), and the lower part of the second gear (36) is meshed with the toothed rail (393).

4. The high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, There are two slide rails (392), which are located on the front and rear sides of the base plate (2) respectively, and the toothed rail (393) is located in the upper middle part of the base plate (2).

5. A high-precision feeding and positioning device for shaft machining according to claim 4, characterized in that, There are two rails (391), and the rails (391) are slidably connected to the two slide rails (392) respectively. The bearing one (33) and the bearing two (38) are fixedly connected to the upper left end of the two rails (391) respectively.

6. A high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, The upper front end of the base (48) is fixedly connected to the sleeve (46), and the upper rear end of the base (48) is fixedly connected to the motor (47).

7. A high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, The transmission rod (45) is rotatably connected inside the sleeve (46).

8. A high-precision feeding and positioning device for shaft machining according to claim 1, characterized in that, The second motor (47), the sleeve (46), and the transmission rod (45) together constitute an electric push rod structure, which is used to drive the laser rangefinder (41) to move up and down.

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