A coaxiality measuring device and method for a rotating body part

Abstract

The present invention is applicable to the field of part coaxiality measurement, and provides a coaxiality measurement device and method for rotating body parts, including a base, on which a clamping assembly and a base slide rail are installed; a supporting mechanism and a testing mechanism are both slidably connected to the base slide rail, and a supporting mechanism and a testing mechanism that can move along the X-axis direction of the base are installed on the top of the base slide rail, and the supporting mechanism includes a first supporting mechanism and a second supporting mechanism, and the testing mechanism is arranged between the first supporting mechanism and the second supporting mechanism. In this way, the device can efficiently complete the automated, multi-point, and multi-rotation angle measurement readings of the workpiece, has high stability, can work continuously, and has accurate reading display, a wide range of adaptability, and small measurement errors.

Description

Technical Field

[0001] The invention is applicable to the field of part coaxiality measurement and provides a coaxiality measurement device and method for a rotating part. Background Art

[0002] In the current work of measuring key dimensions of parts, coaxiality measurement is an important part. The force value required for coaxiality measurement usually has a range of value requirements, which requires manual coordination, and has high requirements on interchangeability, worker experience and rapid operability.

[0003] The existing technology is aimed at measuring the coaxiality of a specific V-block of a single-length rotating body part, and most of the tools need to be operated manually. The measurement is performed by combining a simple mode of a V-block and a micrometer. The tolerance distribution of each tool and measuring tool is too large, resulting in a large existing measurement error and distortion of the relevant measurement results. In general, the operator needs to undergo professional training or relevant qualification certification, which requires a high level of professionalism and high labor costs. If an ordinary worker performs the measurement, the combined errors of manual operation and errors of various tools will seriously cause distortion of the measurement results.

[0004] Therefore, there is an urgent need for relevant automated and high-precision equipment to solve the problem of existing coaxiality measurement being guided by manual experience. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a coaxiality measuring device and method for rotating parts, in order to solve the problems raised in the background technology. A coaxiality measuring device for rotating parts includes a base, on which a clamping assembly and a base slide rail are installed; the supporting mechanism and the testing mechanism are both slidably connected to the base slide rail, and a supporting mechanism and a testing mechanism that can move along the X-axis direction of the base are installed on the top of the base slide rail, the supporting mechanism includes a first supporting mechanism and a second supporting mechanism, and the testing mechanism is arranged between the first supporting mechanism and the second supporting mechanism.

[0006] Furthermore, the supporting mechanism includes a moving platform slidably connected to the bottom platform slide rail through a bottom platform slide seat, a first slide rail is fixedly connected to the top of the moving platform, two first sliders are slidably connected to the top of the first slide rail, and the top of the first slider is fixedly connected to the supporting platform; an adjustment part is provided at the bottom of the two supporting platforms, and screw holes are provided on the adjustment part; a stepper motor is installed on the moving platform, and an adjusting screw is installed at the output end of the stepper motor, and the adjusting screw is threadedly connected to the two screw holes.

[0007] Furthermore, a supporting block is installed on the top of the supporting platform, and two supporting blocks are provided with inclined surfaces, and the two inclined surfaces are arranged opposite to each other to form a V-shaped structure.

[0008] Furthermore, a screw seat is provided at the bottom of the two motion platforms and the test mechanism, and stepper motors corresponding to the two motion platforms and the test mechanism are installed on the base. A position-controlled screw is provided at the output end of the stepper motor, and the position-controlled screw is threadedly connected to the screw seat in a one-to-one correspondence.

[0009] Furthermore, the test mechanism includes a detector slide slidably connected to the bottom platform slide rail, a detector base is installed on the top of the detector slide, a support screw is installed on the top of the detector base, a lifting block is installed on the top of the support screw, a detector is installed on the lifting block, and a probe is provided at the bottom of the detector.

[0010] Furthermore, the support screw is threadedly connected to the detector base, and the support screw is rotationally connected to the lifting block.

[0011] Furthermore, the device also includes a control panel, which is electrically connected to several stepper motors and clamping components on the device.

[0012] A method for measuring the coaxiality of a rotating part is based on the above-mentioned coaxiality measuring device for rotating parts, and its specific steps are as follows:

[0013] S1. Initialize the equipment. The operator sets the working mode and the model data of the rotating body parts to be tested through the control panel on the equipment. After the settings are completed, the equipment starts to work;

[0014] S2. The device drives each stepper motor corresponding to the first supporting mechanism and the second supporting mechanism, and automatically moves the first supporting mechanism and the second supporting mechanism to the initial position according to the input rotating body part model. At this time, the staff places the rotating body part to be tested on the clamping assembly;

[0015] S3. The equipment drives the stepper motor corresponding to the test mechanism to perform coaxiality test on the rotating parts at different points along the X-axis direction;

[0016] S4. After the test is completed, the clamping assembly releases the rotating part and the test mechanism returns to its initial position.

[0017] Furthermore, in step S2, the specific steps of placing the rotating body part to be tested on the clamping assembly are:

[0018] S2.1. The staff places the rotating part on the second supporting mechanism through the sling, and the center of gravity of the rotating part corresponds to the position of the second supporting mechanism. At this time, the two supporting platforms of the first supporting mechanism are controlled by the stepper motor to be in the open state, that is, the opening distance is greater than the initial value matching the part size;

[0019] S2.2. The first supporting mechanism and the testing mechanism are controlled to move to an initial relative position relative to the second supporting mechanism, and then the second supporting mechanism, the first supporting mechanism and the testing mechanism are synchronously moved toward the clamping assembly until one end of the rotating body part extends into the chuck of the clamping assembly;

[0020] S2.3. Clamp the assembly tightly to complete the installation.

[0021] Furthermore, in step S3, the test mechanism performs coaxiality test on the rotating part as follows: the test mechanism tests several points of the rotating part along the X-axis direction. At the same time, during the test of each point, the clamping assembly drives the rotating part to rotate, and performs coaxiality test on different rotational orientations of each point.

[0022] Therefore, the present invention has the following beneficial effects:

[0023] 1. High efficiency. The workpiece can be automatically measured and read after it is placed. After the parts are placed, the readings of the parts can be fully automatically measured at multiple points and multiple rotation angles to achieve the purpose of rapid measurement. It can be used for the coaxiality measurement of continuous and large quantities of workpieces;

[0024] 2. Automated clamping: With the cooperation of the supporting mechanism and the clamping assembly, the staff only needs to match the center of gravity of the part with the supporting mechanism of the device through the sling. After placement, the device automatically moves to complete the clamping, which is convenient and fast, and realizes a high degree of automation in the use of the device;

[0025] 3. High stability. The high-stability base and other metal connector components are used to improve positioning accuracy and equipment reliability. It can work continuously and the readings are accurate.

[0026] 4. Wide range of applications, the V-block moves in multiple directions and can be used to measure the coaxiality of different workpieces;

[0027] 5. High fault tolerance, automatic measurement of multiple points, reducing the measurement deviation caused by some adverse factors of manual measurement; reducing measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the device;

[0029] Figure 2 Schematic diagram of the internal structure of the device;

[0030] Figure 3 for Figure 2 A magnified view of the structure of part A;

[0031] Figure 4 It is a schematic diagram of the supporting mechanism structure;

[0032] Figure 5 It is a schematic diagram of the test mechanism structure;

[0033] Figure 6 It is a schematic diagram of the outer shell structure;

[0034] Figure 7 It is a schematic diagram of the bottom structure of the motion platform and the detector base;

[0035] In the figure: 01-outer shell; 011-first through slot; 012-second through slot; 02-equipment shell;

[0036] 1-base; 11-lifting feet; 12-base slide rail; 13-stepping motor box; 14-position control screw; 141-screw seat;

[0037] 201-first supporting mechanism; 202-second supporting mechanism; 21-bottom platform slide; 22-moving platform; 23-first slide rail; 24-first slider; 25-supporting platform; 26-supporting block; 261-inclined surface; 27-adjusting part; 28-adjusting screw;

[0038] 3-test mechanism; 31-detector slide; 32-detector base; 33-support screw; 34-lifting block; 35-detector; 36-probe; 4-clamping assembly. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] It should be noted that, in the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] Meanwhile, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] See also Figure 1-Figure 7 The purpose of the present invention is to provide a coaxiality measuring device and method for a rotating part. A coaxiality measuring device for a rotating part, the device includes a base 1 and a clamping assembly 4 fixedly connected to the base 1, the clamping assembly 4 can clamp one end of the rotating part, and the clamping assembly 4 can drive the rotating part to rotate. A supporting mechanism and a test mechanism 3 that can move along the X-axis direction of the base 1 are installed on the base 1, and the supporting mechanism is provided with two on the base 1, respectively, a first supporting mechanism 201 and a second supporting mechanism 202, and the two supporting mechanisms are respectively arranged on both sides of the test mechanism 3.

[0044] The bottom of the base 1 is provided with a plurality of lifting legs 11 for supporting and lifting; Figure 2 The base slide rail 12 is in the same direction as the middle X-axis, and the supporting mechanism and the testing mechanism 3 are both slidably connected to the base slide rail 12; that is, the supporting mechanism and the testing mechanism 3 can both slide on the base 1 along the X-axis direction.

[0045] The supporting mechanism includes a motion platform 22 slidably connected to the bottom platform slide rail 12 through a bottom platform slide seat 21, and a top of the motion platform 22 is fixedly connected to a longitudinal direction of the bottom platform slide rail 12. Figure 2 The first slide rail 23 is in the same direction as the middle Y axis, and two first sliders 24 are slidably connected to the top of the first slide rail 23, and a supporting platform 25 is fixedly connected to the top of the first slider 24. Specifically, two first slide rails 23 are provided on the motion platform 22, and the length directions of the two first slide rails 23 are the same as Figure 2 The Y axis is in the same direction; each first slide rail 23 is provided with two first sliders 24, located Figure 2 A moving platform 22 is commonly installed on the tops of the two first sliding blocks 24 in the same direction of the middle Y axis.

[0046] The bottom of the two supporting platforms 25 is provided with an adjustment part 27, and the adjustment part 27 is provided with a screw hole. A stepper motor is installed on the motion platform 22, and the output end of the stepper motor is fixedly connected with an adjustment screw 28, and the adjustment screw 28 is threadedly connected with the two screw holes (in order to make the attached figure more clearly show the structure of the device and the principle of movement, the stepper motor has been omitted). When the stepper motor is in motion, it can drive the adjustment screw 28 to rotate. The screw holes on the two adjustment parts 27 are respectively provided with positive threads and negative threads, so that the forward and reverse rotation of the stepper motor can control the two motion platforms 22 to approach (close together along the Y axis to the middle) or move away (separate from the middle along the Y axis).

[0047] A supporting block 26 is fixedly connected to the top of the supporting platform 25. Both supporting blocks 26 are provided with inclined surfaces 261. The two inclined surfaces 261 are arranged opposite to each other to form a V-shaped structure, which maximizes the stability and high precision of the docking work.

[0048] The bottom of the two motion platforms 22 and the test mechanism 3 are provided with a screw seat 141, and a stepper motor box 13 is fixedly installed on the base 1. Stepper motors corresponding to the two motion platforms 22 and the test mechanism 3 are installed inside the stepper motor box 13. The output ends of the three stepper motors are fixedly connected with a position control screw 14, and the position control screw 14 is threadedly connected to the screw seat 141 in a one-to-one correspondence. In this way, the three stepper motors can respectively control the two motion platforms 22 and the test mechanism 3 to move along the X-axis direction of the base 1. The main load-bearing body of the entire structure of the device adopts a steel structure, and the fixed connection at the connection point adopts a threaded plus fixed pin structure to ensure the rigidity and strength of the main body and ensure stable and reliable operation of the device.

[0049] Preferably, the test mechanism 3 includes a detector slide 31 slidably connected to the bottom platform slide rail 12, a detector base 32 is fixedly connected to the top of the detector slide 31, a support screw 33 is installed on the top of the detector base 32, a lifting block 34 is installed on the top of the support screw 33, a detector 35 is installed on the lifting block 34, and a probe 36 is provided at the bottom of the detector 35. The detector 35 is a micrometer, and the staff can use the micrometer to measure the coaxiality of the rotating body parts with a certain length.

[0050] Preferably, the support screw 33 is threadedly connected to the detector base 32, and the support screw 33 is rotatably connected to the lifting block 34. Specifically, the support screw 33 can rotate on the lifting block 34, and there is no relative displacement in the vertical direction between the lifting block 34 and the support screw 33. The staff can adjust the support screw 33 by using a tool to adjust the height of the lifting block 34, so that the micrometer can adapt to the measurement of the coaxiality of parts with different shaft diameters.

[0051] Preferably, the top of the outer shell 01 is provided with a first through slot 011 and a second through slot 012, the support screw 33 passes through the first through slot 011, and the second through slot 012 is provided at the corresponding position of the travel of the first supporting mechanism 201, the second supporting mechanism 202 and the testing mechanism 3. The outer shell 01 can protect the device, and the first through slot 011 and the second through slot 012 can ensure that the first supporting mechanism 201, the second supporting mechanism 202 and the testing mechanism 3 can move smoothly.

[0052] Preferably, a device housing 02 corresponding to the clamping assembly 4 is installed on the outer shell 01, and the clamping assembly 4 is installed inside the device housing 02, which can protect the device housing 02 and prevent workers from touching it and getting injured.

[0053] Preferably, the device further comprises a control panel, which is electrically connected to a plurality of stepper motors and a clamping assembly 4 on the device. The operator can control the operation of the stepper motor and the clamping assembly 4 through the control panel, and the control panel can set the operation mode of the device to meet the device's precise measurement requirements for parts of different models.

[0054] Based on the above-mentioned coaxiality measuring device for rotating body parts, the present invention provides a coaxiality measuring method for rotating body parts, and the specific steps are as follows:

[0055] S1. Initialize the equipment. The operator sets the working mode, the model of the rotating part to be tested and other data through the control panel on the equipment. After the settings are completed, the equipment starts working.

[0056] S2. The equipment drives each stepper motor corresponding to the first supporting mechanism 201 and the second supporting mechanism 202, and automatically moves the first supporting mechanism 201 and the second supporting mechanism 202 to the initial position according to the input rotating body part model. At this time, the staff uses the sling to place the rotating body part to be tested on the clamping assembly 4.

[0057] The specific steps of placing the rotating body part to be tested on the clamping assembly 4 are as follows:

[0058] S2.1. The staff places the rotating part on the second supporting mechanism 202 through a sling, and the center of gravity of the rotating part corresponds to the position of the second supporting mechanism 202. At this time, the two supporting platforms 25 of the first supporting mechanism 201 are controlled by the stepper motor to be in an open state, that is, the opening distance is greater than the initial value matching the part size.

[0059] S2.2. The first supporting mechanism 201 and the testing mechanism 3 are controlled to move to an initial relative position relative to the second supporting mechanism 202, and then the second supporting mechanism 202, the first supporting mechanism 201 and the testing mechanism 3 simultaneously approach the clamping assembly 4 until one end of the rotating body part extends into the chuck of the clamping assembly 4.

[0060] S2.3. Clamp the clamping assembly 4 to complete the installation.

[0061] Specifically, the initial positions of the first supporting mechanism 201 and the second supporting mechanism 202 should be set to ensure that when the rotating part is placed on the V-shaped structure of the supporting mechanism, the central axis of the rotating part coincides with the rotating axis of the clamping assembly 4. This can ensure that the clamping assembly 4 will not be damaged due to misalignment with the rotating part when clamping.

[0062] S3. The device drives the stepper motor corresponding to the test mechanism 3 to perform coaxiality tests on the rotating parts at different points along the X-axis direction.

[0063] The specific steps of the test mechanism 3 to carry out the coaxiality test on the rotating part are as follows: the test mechanism 3 tests several points of the rotating part along the X-axis direction. At the same time, during the test of each point, the clamping assembly 4 drives the rotating part to rotate, and the coaxiality test is carried out on different rotational orientations of each point.

[0064] S4. After the test is completed, the clamping assembly 4 releases the rotating part and the test mechanism returns to its initial position.

[0065] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for measuring the coaxiality of a rotating part, characterized in that: The following steps are involved: S1. Initialize the equipment. The operator sets the working mode and the model data of the rotating body parts to be tested through the control panel on the equipment. After the settings are completed, the equipment starts to work; S2. The device drives each stepper motor corresponding to the first supporting mechanism (201) and the second supporting mechanism (202), and automatically moves the first supporting mechanism (201) and the second supporting mechanism (202) to the initial position according to the input rotating body part model, and the staff then places the rotating body part to be tested on the clamping assembly (4); S3. The device drives a stepper motor corresponding to the test mechanism (3) to perform a coaxiality test on the rotating body parts at different points along the X-axis direction; S4. After the test is completed, the clamping assembly (4) releases the rotating part and the test mechanism returns to its initial position; In step S2, the specific steps of placing the rotating body part to be tested on the clamping assembly (4) are as follows: S2.

1. The staff places the rotating part on the second supporting mechanism (202) by means of a sling, and the center of gravity of the rotating part corresponds to the position of the second supporting mechanism (202). At this time, the two supporting platforms (25) of the first supporting mechanism (201) are controlled by a stepper motor to be in an open state, that is, the opening distance is greater than the initial value matching the size of the part; S2.

2. The first supporting mechanism (201) and the testing mechanism (3) are controlled to move to an initial relative position relative to the second supporting mechanism (202), and then the second supporting mechanism (202), the first supporting mechanism (201) and the testing mechanism (3) are synchronously moved toward the clamping assembly (4) until one end of the rotating body part extends into the chuck of the clamping assembly (4); S2.

3. Clamp the clamping assembly (4) to complete the installation.

2. The method for measuring the coaxiality of a rotating body part according to claim 1, characterized in that: In step S3, the test mechanism (3) performs a coaxiality test on the rotating part. Specifically, the test mechanism (3) performs a test on a plurality of points of the rotating part along the X-axis direction. Meanwhile, during the test of each point, the clamping assembly (4) drives the rotating part to rotate, and performs a coaxiality test on different rotational positions of each point.

3. The coaxiality measuring method of a rotating body part according to claim 1, characterized in that: A coaxiality measuring device for a rotating body part is used, the coaxiality measuring device for a rotating body part comprising a base (1), the base (1) being mounted with a clamping assembly (4) and a base slide rail (12); a supporting mechanism and a testing mechanism (3) which can move along the X-axis direction of the base (1) are mounted on the top of the base slide rail (12), the supporting mechanism and the testing mechanism (3) are both slidably connected to the base slide rail (12), the supporting mechanism comprising a first supporting mechanism (201) and a second supporting mechanism (202), the testing mechanism (3) being arranged between the first supporting mechanism (201) and the second supporting mechanism (202); The supporting mechanism comprises a motion platform (22) slidably connected to a bottom platform slide rail (12) via a bottom platform slide seat (21); a first slide rail (23) is fixedly connected to the top of the motion platform (22); two first slide blocks (24) are slidably connected to the top of the first slide rail (23); and a supporting platform (25) is fixedly connected to the top of the first slide block (24); The bottoms of the two supporting platforms (25) are each provided with an adjusting portion (27), and the adjusting portion (27) is provided with a screw hole; a stepping motor is mounted on the motion platform (22), and an adjusting screw (28) is mounted on the output end of the stepping motor, and the adjusting screw (28) is threadedly connected to the two screw holes; A supporting block (26) is installed on the top of the supporting platform (25), and two supporting blocks (26) are each provided with an inclined surface (261), and the two inclined surfaces (261) are arranged opposite to each other to form a V-shaped structure; The bottoms of the two motion platforms (22) and the test mechanism (3) are each provided with a screw seat (141); stepper motors corresponding to the two motion platforms (22) and the test mechanism (3) are respectively installed on the base (1); output ends of the stepper motors are each provided with a position-controlling screw (14); the position-controlling screw (14) is threadedly connected to the screw seat (141) in a one-to-one correspondence.

4. The method for measuring the coaxiality of a rotating body part according to claim 3, characterized in that: The test mechanism (3) comprises a detector slide (31) slidably connected to a base slide rail (12); a detector base (32) is mounted on the top of the detector slide (31); a support screw (33) is mounted on the top of the detector base (32); a lifting block (34) is mounted on the top of the support screw (33); a detector (35) is mounted on the lifting block (34); and a probe (36) is provided at the bottom of the detector (35).

5. The method for measuring the coaxiality of a rotating body part according to claim 4, characterized in that: The support screw (33) is threadedly connected to the detector base (32), and the support screw (33) is rotationally connected to the lifting block (34).

6. The method for measuring the coaxiality of a rotating body part according to claim 3, characterized in that: The device also includes a control panel, which is electrically connected to a plurality of stepper motors and a clamping assembly (4) on the device.

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