Device for measuring total length and straightening shaft products

Abstract

The utility model belongs to the technical field of shaft product detection and correction equipment, and relates to a device for measuring the total length and straightening a shaft product, which comprises a bottom plate (80), a gantry (3), a length measuring module (4), a straightening module (1), a straightening support block (67), a detection module (57), a circular shaft rotating module (2), a circular shaft bearing elastic support module (6) and circular shaft two-side stop blocks (5). According to the utility model, the measurement precision and the straightening efficiency of shaft products are improved, and the processing quality and precision of the shaft products are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of shaft product testing and correction equipment, and in particular relates to a device for measuring the total length and straightening shaft products. Background Technology

[0002] In the market, many companies still measure and straighten the runout of their shaft products manually. Products with high straightness requirements are difficult to straighten efficiently by hand. Moreover, some shaft products have large deformation due to their materials, and thin and long products are difficult to straighten successfully by hand. Therefore, the existing technology for the inspection and straightening of shaft products has problems of low efficiency and inaccurate inspection, which greatly limits the production efficiency of shaft products and cannot meet the demand for large-volume production. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a device for measuring and straightening shaft products, which can improve measurement accuracy and straightening efficiency.

[0004] The present invention is implemented as follows:

[0005] An apparatus for measuring the total length and straightening shaft products, comprising:

[0006] Base plate, gantry, length measuring module, straightening module, straightening support block, detection module, round shaft rotation module, round shaft bearing elastic support module, and round shaft side stops;

[0007] The gantry is fixed to the base plate. The straightening module is slidably mounted on the gantry. The detection module is directly mounted on the straightening module or slidably mounted on the gantry. A slide rail parallel to the gantry is provided on the base plate. The length measuring module is installed on the guide rail and located on one side of the gantry. The straightening support block is slidably mounted on the slide rail and located directly below the straightening module. There are two of each of the circular shaft rotation module, circular shaft bearing elastic support module, and circular shaft side stops. One circular shaft rotation module is fixed to one side of the gantry. One circular shaft bearing elastic support module and one circular shaft side stops are arranged side by side and fixed to the base plate. One circular shaft bearing elastic support module is located directly below one circular shaft rotation module. The other circular shaft rotation module slides on the gantry. Another circular shaft bearing elastic support module and another circular shaft side stops are arranged side by side and slidably mounted on the slide rail. The other circular shaft bearing elastic support module is located directly below the other circular shaft rotation module.

[0008] There can be multiple calibration modules, and the number of these modules can be greater than, less than, or equal to the number of detection modules.

[0009] The straightening module includes a straightening adjustment fixing block, a linear module fixing plate, a stepper motor, a linear module, a linear module slider, an origin sensor, a sensor sensing block, a straightening pressure plate, and a straightening nylon pressure head. The straightening adjustment fixing block is mounted on the gantry, the linear module fixing plate is mounted on the straightening adjustment fixing block, the stepper motor and the linear module are both mounted on the straightening adjustment fixing block, the stepper motor and the linear module are connected by a drive, the linear module slider is assembled inside the linear module, the rotation of the stepper motor drives the linear module slider inside the linear module to move up and down, one end of the straightening pressure plate is connected to the straightening nylon pressure head, and the other end of the straightening pressure plate is connected to the linear module slider; the origin sensor is mounted on the linear module fixing plate, the sensor sensing block is mounted on the straightening pressure plate, and the positions of the origin sensor and the sensor sensing block are matched.

[0010] The detection module includes a detection cylinder, a measuring head fixing block, a measuring rod, a laser mounting plate, a laser, a tungsten carbide measuring head, a measuring lifting adjustment block, a measuring fixing block, and a measuring moving adjustment block. The measuring moving adjustment block is mounted on the gantry, the measuring fixing block is fixed on the measuring moving adjustment block, the measuring lifting adjustment block is slidably mounted on the measuring fixing block, the laser mounting plate is fixed on the measuring lifting adjustment block, the laser is mounted on the laser mounting plate, the main body of the detection cylinder is mounted on the laser mounting plate, the measuring head fixing block is connected to the lower end of the movable end of the detection cylinder, the measuring rod is connected to the measuring head fixing block, the measuring rod extends directly below the laser's light output port, and the tungsten carbide measuring head is located on the lower end face of the measuring rod and is positioned directly below the laser's light output port.

[0011] The circular shaft rotation module includes a rotating rubber wheel, a rotating rubber wheel stepper motor, a rotating rubber wheel cylinder, a moving fixed plate, an adjusting and lifting fixed plate, and a slider fixed plate. The moving fixed plate is installed on the gantry, the adjusting and lifting fixed plate is installed on the moving fixed plate, and the slider fixed plate is installed on the adjusting and lifting fixed plate. The rotating rubber wheel is connected to the rotating rubber wheel stepper motor and is installed on the moving end of the rotating rubber wheel cylinder. The main body of the rotating rubber wheel cylinder is assembled on the slider fixed plate.

[0012] The length measuring module includes a length measuring laser, a length measuring cylinder, a length measuring push rod, and a length measuring cylinder fixing plate. The length measuring cylinder fixing plate is mounted on a guide rail on the base plate, the main body of the length measuring cylinder is mounted on the length measuring cylinder fixing plate, the length measuring laser is fixed on the main body of the length measuring cylinder, the length measuring push rod is connected to the moving end of the length measuring cylinder, and the axis of the length measuring push rod coincides with the light output port of the length measuring laser.

[0013] The circular shaft bearing elastic support module includes a rotating bracket fixing plate, a rotating bracket adjusting plate, two bearings, a bearing seat, a miniature guide rail, a nylon block, and an elastic fixing block;

[0014] The rotating bracket adjustment plate is mounted on the guide rail on the base plate, the rotating bracket fixing plate is mounted on the rotating bracket adjustment plate, two bearings are mounted on the bearing seats, the bearing seats are slidably mounted on the miniature guide rail, the miniature guide rail is mounted on the rotating bracket fixing plate, the nylon block is mounted on the rotating bracket fixing plate, one end of the elastic fixing block is mounted on the rotating bracket fixing plate, and the other end is connected to the bearing seat.

[0015] This utility model embodiment, by setting up a straightening module, a detection module, and a length measuring module, performs shaft length detection and shaft runout detection on shaft products. Based on the runout detection, a straightening operation is performed on the shaft, improving the processing quality and accuracy of shaft products. The straightening module efficiently completes high-precision measurement and straightening of shaft products' runout; the length measuring module has an independent mechanism for measuring the total length of the product; the round shaft bearing elastic support module moves with the straightening force during the straightening process, preventing excessive force from being applied to the measuring bearing and preventing indentations on the product's measurement surface. Contact / non-contact measurement can be freely switched, making machine adjustment easy; manual operation is reduced, allowing one person to operate multiple machines simultaneously; the wider the support interval between the round shaft bearing elastic support modules at both ends of the straightening support block during the straightening process, the less likely the product is to deform. Reasonably adjusting the distance between support blocks and the distance between support blocks and the product can achieve a more ideal straightening effect. Attached Figure Description

[0016] Figure 1 This is a perspective view of the device for three-point measurement and three-point alignment according to this utility model;

[0017] Figure 2 This is a three-dimensional view of the device for three-point measurement and one-point alignment according to this utility model;

[0018] Figure 3 This is a three-dimensional assembly drawing and an exploded view of the alignment module and the detection module in this utility model;

[0019] Figure 4 These are a three-dimensional assembly drawing and an exploded view of the detection module in this utility model;

[0020] Figure 5 This is a three-dimensional assembly drawing and an exploded view of the circular shaft rotation module in this utility model;

[0021] Figure 6 These are a three-dimensional assembly drawing and an exploded view of the length measuring module in this utility model;

[0022] Figure 7 These are a three-dimensional assembly drawing and an exploded view of the elastic support module for the circular shaft bearing in this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments:

[0025] like Figures 1 to 7 As shown, a device for measuring the total length and straightening shaft products includes:

[0026] Base plate 80, gantry 3, length measuring module 4, straightening module 1, straightening support block 67, detection module 57, round shaft rotation module 2, round shaft bearing elastic support module 6, and round shaft side stops 5;

[0027] The gantry is fixed to the base plate. The straightening module is slidably mounted on the gantry. The detection module is directly mounted on the straightening module or slidably mounted on the gantry. A slide rail 81 parallel to the gantry is provided on the base plate. The length measuring module is installed on the guide rail and located on one side of the gantry. The straightening support block is slidably mounted on the slide rail and located directly below the straightening module. There are two of each of the circular shaft rotation module, circular shaft bearing elastic support module, and circular shaft side stops. One circular shaft rotation module is fixed to one side of the gantry. One circular shaft bearing elastic support module and one circular shaft side stops are arranged side by side and fixed to the base plate. One circular shaft bearing elastic support module is located directly below one circular shaft rotation module. The other circular shaft rotation module slides on the gantry. Another circular shaft bearing elastic support module and another circular shaft side stops are arranged side by side and slidably mounted on the slide rail. The other circular shaft bearing elastic support module is located directly below the other circular shaft rotation module.

[0028] There can be multiple calibration modules, and the number of these modules can be greater than, less than, or equal to the number of detection modules.

[0029] The straightening module includes a straightening adjustment fixing block 22, a linear module fixing plate 23, a stepper motor 18, a linear module 20, a linear module slider 21, an origin sensor 24, a sensor sensing block 25, a straightening pressure plate 26, and a straightening nylon pressure head 32. The straightening adjustment fixing block is installed on the gantry, the linear module fixing plate is installed on the straightening adjustment fixing block, the stepper motor and the linear module are both installed on the straightening adjustment fixing block, the stepper motor and the linear module are connected by a drive, the linear module slider is assembled inside the linear module, the rotation of the stepper motor drives the linear module slider inside the linear module to move up and down, one end of the straightening pressure plate is connected to the straightening nylon pressure head, and the other end of the straightening pressure plate is connected to the linear module slider; the origin sensor is installed on the linear module fixing plate, the sensor sensing block is installed on the straightening pressure plate, and the positions of the origin sensor and the sensor sensing block are matched.

[0030] The detection module includes a detection cylinder 58, a measuring head fixing block 59, a measuring rod 60, a laser mounting plate 61, a laser 62, a tungsten carbide measuring head 63, a measuring lifting adjustment block 64, a measuring fixing block 65, and a measuring moving adjustment block 66. The measuring moving adjustment block is mounted on the gantry, the measuring fixing block is fixed on the measuring moving adjustment block, the measuring lifting adjustment block is slidably mounted on the measuring fixing block, the laser mounting plate is fixed on the measuring lifting adjustment block, the laser is mounted on the laser mounting plate, the main body of the detection cylinder is mounted on the laser mounting plate, the measuring head fixing block is connected to the lower end of the movable end of the detection cylinder, the measuring rod is connected to the measuring head fixing block, the measuring rod extends directly below the laser's light output port, and the tungsten carbide measuring head is set on the lower end face of the measuring rod and is located directly below the laser's light output port.

[0031] The circular shaft rotation module includes a rotating rubber wheel 7, a rotating rubber wheel stepper motor 8, a rotating rubber wheel cylinder 13, a moving fixed plate 17, an adjusting and lifting fixed plate 16, and a slider fixed plate 10. The moving fixed plate is installed on the gantry, the adjusting and lifting fixed plate is installed on the moving fixed plate, and the slider fixed plate is installed on the adjusting and lifting fixed plate. The rotating rubber wheel is connected to the rotating rubber wheel stepper motor and is installed on the moving end of the rotating rubber wheel cylinder. The main body of the rotating rubber wheel cylinder is assembled on the slider fixed plate.

[0032] The length measuring module includes a length measuring laser 37, a length measuring cylinder 40, a length measuring push rod 43, and a length measuring cylinder fixing plate 42. The length measuring cylinder fixing plate is mounted on a guide rail on the base plate, the main body of the length measuring cylinder is mounted on the length measuring cylinder fixing plate, the length measuring laser is fixed on the main body of the length measuring cylinder, the length measuring push rod is connected to the moving end of the length measuring cylinder, and the axial direction of the length measuring push rod coincides with the light output port of the length measuring laser.

[0033] The round shaft bearing elastic support module includes a rotating bracket fixing plate 55, a rotating bracket adjusting plate 56, two bearings 49, a bearing seat 45, a miniature guide rail 51, a nylon block 52, and an elastic fixing block 50.

[0034] The rotating bracket adjustment plate is mounted on the guide rail on the base plate, the rotating bracket fixing plate is mounted on the rotating bracket adjustment plate, two bearings are mounted on the bearing seats, the bearing seats are slidably mounted on the miniature guide rail, the miniature guide rail is mounted on the rotating bracket fixing plate, the nylon block is mounted on the rotating bracket fixing plate, one end of the elastic fixing block is mounted on the rotating bracket fixing plate, and the other end is connected to the bearing seat.

[0035] Figure 3 The main components and structure of the combination of the middle-range straight module and the detection module are as follows:

[0036] Stepper motor (LC60H2127) 18, rotates to drive the linear module to move up and down; motor mounting base 19; linear module (KK6005) 20; linear module slider 21; straightening adjustment fixing block 22, adjusts the left and right movement of the straightening module; linear module fixing plate 23; origin sensor 24, is the straightening pressure plate sensing sensor, zeroing the position and calculating the lifting distance of the pressure plate; sensor sensing block 25; straightening pressure plate 26; laser fixing plate 1 27, laser (HL-G103-SJ) 2 8. Measurement data: PLC reads data to check if it is OK or NG. If NG, the straightening plate will rise and fall to straighten until the product is OK; Laser fixing plate 29; Cylinder (HLH10-25S) 30: Drives the measuring head to rise and fall, and the laser measures the data; Laser fixing plate 31: Straightens the nylon pressure head 32: The straightening plate and nylon pressure head are combined to straighten the round shaft; Measuring head fixing block 33; Measuring rod 34; Pin 35: The measuring head and measuring rod are combined with a pin; Tungsten steel measuring head (M2.5*8) 36.

[0037] During the straightening operation, the stepper motor 18 drives the straightening nylon pressure head 32 (in conjunction with the straightening support block 67) to move up and down repeatedly to hammer the shaft product below, continuously correcting the straightness of the shaft product at that point until the requirements are met. The laser is used to measure the jump points of the shaft product until they reach the preset range.

[0038] Figure 4 The main components and structure of the detection module are as follows:

[0039] 58. Cylinder (HLH10-25S); 59. Measuring head fixing block; 60. Measuring rod; 61. Laser mounting plate; 62. Laser (HL-G103-SJ); 63. Tungsten steel measuring head; 64. Measuring lifting adjustment block; 65. Measuring fixing block; 66. Measuring moving adjustment block.

[0040] When performing jump point measurement, the tungsten carbide measuring head 63 is placed against the outer peripheral surface of the shaft product. The height change of the measuring rod is measured by the laser, and the runout of the shaft product at the measuring point can be obtained, and the corresponding value can be measured.

[0041] Figure 5 The main components and structure of the circular shaft rotation module are as follows:

[0042] Rotating rubber wheel 7, driven by a motor, rotates the shaft to detect runout; stepper motor 8; motor fixing plate 9; slider fixing plate 10; slider (MGN12H) 11; cylinder fixing plate 12; cylinder (MA16-25SCA) 13, extends and retracts to drive the motor fixing plate to rise and fall; motor fixing plate buffer block 14, reduces excessive pressure, preventing the shaft from rotating; guide rail (MGN12) 15, fixes the vertical lifting of the motor; adjusting lifting fixing plate 16; moving fixing plate 17, adjusts the left and right movement position of the pressure roller.

[0043] The rotating rubber wheel 7 is driven by a motor, providing rotational power for the shaft products. The rotating rubber wheel 7 presses down, pressing the shaft products onto the double bearings (see...). Figure 7 This allows shaft products to rotate, continuously straightening the circumference of the shaft during the straightening process of the straightening module, and also performing jump point detection on the circumference of the shaft during the detection process of the detection module, thereby ensuring 360-degree straightening and detection of the shaft.

[0044] Figure 6 The main components and structure of the length measuring module are as follows:

[0045] Laser (HL-G103-SJ) 37, measures length data and determines OK or NG; laser mounting plate 38; linear bearing (LMK8L) 39, used in conjunction with length measuring rod 43, the laser detects the shaft end face and reads data; cylinder (MXS12-20) 40, cylinder extension and retraction, the rod presses against the product end face; linear bearing fixing plate 41; cylinder fixing plate 42, can be adjusted left and right to measure products of different lengths; length measuring rod 43.

[0046] During length measurement, the measuring rod moves out with the cylinder and presses against one end of the shaft product. The laser reads the distance moved by the other end of the measuring rod 43 (relative to the original reference point), and the length of the shaft product can be obtained.

[0047] Figure 7 The main components and structure of the elastic support module for the round shaft bearing are as follows:

[0048] Locking shim 44, bearing mounting seat 45, shim 46, bearing pin 47, sponge fixing block 48, sponge is pasted on the bevel to wipe the bearing and clean the bearing surface, bearing (6901) 49, the round shaft rotates and produces a runout, the laser reads the data; elastic fixing block 50, a spring is installed here; miniature guide rail (BSP1025SL) 51, responsible for the lifting and lowering of the bearing seat during straightening; nylon block 52, the round shaft contact surface will not be crushed; nylon fixing block 53, can be adjusted up and down to support round shafts of different diameters; support fixing block 54, rotating bracket fixing plate 55; rotating bracket adjusting plate 56, can be moved left and right to be used with round shafts of different lengths.

[0049] The elastic support module of the round shaft bearing mainly serves to support both ends of the shaft product. Together with the round shaft rotation module, it provides power for the rotation of the shaft product, so that the shaft product can rotate continuously or intermittently during the inspection or straightening process.

[0050] In this invention, the number and combination of the calibration module and the detection module can be arbitrarily set. The number of calibration modules can be greater than, less than, or equal to the number of detection modules. Common combinations of calibration and measurement modules are as follows:

[0051] Option 1: One-point measurement and one-point calibration (1 calibration module). The detection module is directly installed on the calibration module. After the calibration function is turned off, it can be used as a 1-point jump sorting.

[0052] Option 2: Two-point measurement and one-point straightening (1 straightening module and 2 detection modules). One detection module is directly installed on the straightening module, and the other detection module is slidably set on the gantry. After the straightening function is turned off, it can be used as a two-point jumping sorting.

[0053] Option 3: Two-point measurement and two-point alignment (2 alignment modules and 2 detection modules). The detection modules are directly installed on the alignment modules one-to-one. After the alignment function is turned off, they can be used for two-point jump sorting.

[0054] Option 4: Three-point measurement and one-point straightening (1 straightening module and 3 detection modules). One detection module is directly installed on the straightening module, and the other two detection modules are slidably set on the gantry. After the straightening function is turned off, it can be used as a 3-point jumping sorting.

[0055] Option 5: Three-point measurement and two-point straightening (2 straightening modules and 3 detection modules). Two detection modules are directly installed on the straightening module one-to-one, and one detection module is slidably set on the gantry. After the straightening function is turned off, it can be used as a 3-point jumping sorting.

[0056] Option 6: Three-point measurement and three-point alignment (3 alignment modules and 3 detection modules). The detection modules are directly installed on the alignment modules one-to-one. After the alignment function is turned off, it can be used for 3-point jump sorting.

[0057] Option 7: Four-point measurement and four-point alignment (4 alignment modules and 4 detection modules). The detection modules are directly installed on the alignment modules one-to-one. After the alignment function is turned off, it can be used for 4-point jump sorting.

[0058] Option 8: Five-point measurement and three-point straightening (3 straightening modules and 5 detection modules). Three detection modules are directly installed on the straightening modules one-to-one, and the other two detection modules are slidably set on the gantry. After the straightening function is turned off, it can be used as a 5-point jumping sorting.

[0059] Option 9: Five-point measurement and five-point alignment (5 alignment modules and 5 detection modules). The detection modules are directly installed on the alignment modules one-to-one. After the alignment function is turned off, it can be used for 5-point jump sorting.

[0060] First, the total length of the shaft product is measured at the length measuring station. Then, it enters the straightening station to perform multi-point measurement and straightening of the shaft product's runout. When the product needs straightening, the straightening module or detection module moves to the designated position according to the support point requirements and measurement / straightening point requirements of the shaft product. Finally, the straightening module or detection module is locked in a fixed position by the gantry. During the measurement and straightening process, the straightening module or detection module is fixed (non-moving).

[0061] In the embodiments of this utility model, the measuring head can use RS-485 communication to improve data measurement accuracy, while traditional measuring heads use analog communication, which has limited accuracy. Analog signals are easily affected by ambient noise, have limited accuracy, and poor repeatability. Especially during long-distance transmission, signal attenuation and distortion can lead to inaccurate data. Traditional analog signals usually cannot provide the device's own status information (such as fault diagnosis, data analysis, etc.), requiring additional hardware or manual testing.

[0062] The equipment of this utility model is mainly for shaft products, including but not limited to iron shafts, steel shafts, aluminum rods, copper rods, iron pipes, steel pipes, aluminum pipes, 3D printed lead screws, automotive lead screws, motor worm gears, ball screws, motor lead screws, and air conditioning steering shafts. It can perform jumping sorting of the following types of products: carbon fiber rods, glass fiber rods, tungsten steel rods, etc.

[0063] This invention relates to a device that can measure parameters such as runout and overall length of shaft products, and automatically straighten products with runout exceeding tolerance. When the straightening function is off, it can be used as a runout sorting machine to separate products with different runout ranges. Floating support points are used for measurement, and all contact points with the products are coated with rubber to prevent scratches.

[0064] Shaft products can be automatically fed to the length measurement module and the straightening module. The system automatically detects and straightens the runout of the shaft products, automatically measures the total length of the shaft products, and performs multi-point measurement and straightening of the runout of the shaft products. The straightening module can be used as a support module. When the straightening function of the straightening module is turned off, it can be used as an automatic sorting machine to sort products within different runout levels. The range of runout levels can be set with appropriate values ​​according to different product batches.

[0065] Shaft products enter the straightening station, where they are supported at both ends by a round shaft bearing elastic support module. Simultaneously, a round shaft rotation module drives the shaft product to rotate, and then the shaft's runout is measured at multiple points. When measuring the runout of the shaft product simultaneously at multiple points, only one straightening block descends at a time to perform the straightening action. The measurement and straightening modes can be selected from the following two options: A) The straightening head of the straightening module that lowers first will straighten the shaft based on the runout measurement value at the measurement point; B) The order in which the straightening heads of multiple straightening modules descend can be specified according to the product characteristics.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

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