High-precision scanning three-coordinate measuring instrument

Abstract

The utility model relates to the technical field of automobile measurement, and discloses a high-precision scanning three-coordinate measuring instrument, an arc-shaped guide rail is semi-arc-shaped, the bottom of the arc-shaped guide rail is firmly fixed on a specific base through welding, and a stable basic support is provided for the whole measuring system. The to-be-measured automobile part is placed at a proper position in the measurement area. The high-precision scanning three-coordinate measuring instrument is started, at the moment, the arc-shaped guide rail stably supports the whole measuring instrument, the gear ring and the gear ring matched clamping gear are in a to-be-operated meshing preparation state, and all parts of the three-coordinate measuring mechanism are stably connected. According to the utility model, by optimizing the structural design, the complex operation process is simplified into the process of driving the motor to start and drive related parts to move. An operator only needs to place a to-be-measured automobile part and start equipment, and the measuring instrument can automatically complete movement of the measuring head and data acquisition without complex operation steps, so that professional requirements on the operator are reduced, and labor cost and training cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive measurement, and in particular to a high-precision scanning coordinate measuring machine. Background Technology

[0002] In the automotive manufacturing industry, the quality of auto parts directly affects the performance, safety, and reliability of the entire vehicle. With the rapid development of the automotive industry, the precision requirements for parts are becoming increasingly stringent, making high-precision dimensional measurement a crucial link in controlling product quality. Coordinate measuring machines (CMMs), as precision equipment capable of accurately measuring the three-dimensional dimensions of objects, are widely used in the field of automotive parts inspection.

[0003] Traditional measurement methods, such as calipers and micrometers, are inefficient and have limited accuracy when dealing with complex-shaped automotive parts, making it difficult to meet the large-scale, high-precision inspection requirements of modern automobile production. Coordinate measuring machines (CMMs), however, overcome these limitations, enabling precise measurement of the dimensions of various parts of components, greatly improving both accuracy and efficiency.

[0004] Existing coordinate measuring machines (CMMs) are complex to operate, expensive, and require highly skilled operators, increasing labor and training costs for businesses. Furthermore, their maintenance is challenging. Therefore, we propose a high-precision scanning CMM that is easy to operate and has a low cost. Utility Model Content

[0005] To address the technical problems of complex operation and high cost of existing equipment, this utility model provides a high-precision scanning coordinate measuring machine.

[0006] This utility model is achieved by the following technical solution: a high-precision scanning coordinate measuring machine, wherein the arc-shaped guide rail is semi-circular and the bottom is firmly fixed to a specific base by welding, providing a stable foundation support for the entire measuring system.

[0007] Place the automotive component to be tested in a suitable position within the measurement area. Turn on the high-precision scanning coordinate measuring machine (CMM). At this point, the arc-shaped guide rail firmly supports the entire measuring machine, the gear ring and its matching retaining gear are in a ready-to-engage state, all components of the CMM are securely connected, and the measuring head is in its initial position, ready to begin measurement. All components of the CMM are tightly connected. The mounting bracket and the receiving seat are fixedly connected by a fixing sleeve, providing a stable mounting platform for the drive motor and other components.

[0008] When the drive motor is started, the motor output shaft begins to rotate. Since the drive motor and the drive rod are connected by a coupling, power is stably transmitted to the drive rod, causing it to rotate.

[0009] When the driving rod rotates, the gear ring matched clamping gear connected with the driving rod rotates. Under the action of gear meshing, the gear ring matched clamping gear rolls along the gear ring, the upper gear ring matched clamping gear rolls on the upper surface of the arc-shaped guide rail, and the whole three-coordinate measuring mechanism is driven to move along the arc-shaped guide rail. The driving rod limiting sleeve limits the movement track of the driving rod, ensures that the gear ring matched clamping gear and the gear ring are stably meshed, and enables the measuring head to move along the predetermined path.

[0010] As a further optimization scheme of the utility model, the gear ring is installed on the arc-shaped guide rail and cooperates with the two groups of gear ring matched clamping gears distributed above and below, the upper gear ring matched clamping gear is overlapped on the upper surface of the arc-shaped guide rail, and the lower gear ring matched clamping gear is meshed with the gear ring below the arc-shaped guide rail, thereby ensuring the stability of the movement of the measuring mechanism.

[0011] As a further optimization scheme of the utility model, the driving motor and the driving rod are connected through a shaft coupling, and the two ends of the shaft coupling are respectively connected with the output shaft of the driving motor and the driving rod. The shaft coupling effectively compensates the installation error between the two shafts, ensures the stability of power transmission, and avoids component wear or measurement deviation caused by error.

[0012] As a further optimization scheme of the utility model, the driving rod penetrates through the driving rod limiting sleeve and is connected with the gear ring matched clamping gear, and the driving rod and the driving rod limiting sleeve are rotationally connected, so that the driving rod can rotate smoothly and maintain the stable meshing and movement of the gear ring matched clamping gear and the gear ring. The measuring head is fixed on the bottom support of the fixed frame and is used for acquiring measurement data.

[0013] As a further optimization scheme of the utility model, when the three-coordinate measuring mechanism moves, the fixed frame moves synchronously, and the measuring head installed on the bottom support of the fixed frame moves, thereby scanning and measuring the automobile parts to be measured.

[0014] As a further optimization scheme of the utility model, the measuring head acquires the coordinate data of the surface of the parts and transmits the data to the control system of the measuring instrument in real time. The control system processes and analyzes the data, calculates the size, shape and other parameters of the parts, such as the diameter of the hole of the automobile engine cylinder body and the diameter of the piston, and provides accurate data support for the quality detection of automobile parts.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1、The utility model optimizes the structure design, simplifies the complex operation process into the process that the driving motor drives the related components to move. The operator only needs to place the automobile parts to be measured, starts the equipment, and the measuring instrument can automatically complete the movement of the measuring head and data acquisition, without complex operation steps, reduces the professional requirements for the operator, and reduces the labor cost and training cost.

[0017] 2, The utility model discloses a arc -shaped guide rail bottom welding fixed, strong stability, and gear ring and the upper and lower distribution of the matched gear tooth wheel cooperate with work, and driving rod limit sleeve accurate restriction driving rod track, guarantee the accurate movement of measuring head. The data that measuring head obtains is handled analysis through control system, can accurately obtain the size, shape and other parameters of spare part, satisfies the high -precision measurement demand of automobile spare part, effectively guarantees the quality of automobile product. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic view of the utility model;

[0019] Figure 2 It is three -coordinate measuring mechanism connection structure schematic view of the utility model;

[0020] Figure 3 It is the utility model Figure 2 middle area structure enlarged schematic view.

[0021] Main symbol explanation,

[0022] 1, arc -shaped guide rail;2, gear ring;3, three -coordinate measuring mechanism;31, fixed frame;32, fixed sleeve;33, bearing seat;34, driving motor;35, driving rod;36, driving rod limit sleeve;37, gear ring matched gear tooth wheel;38, gear tooth wheel fixed support;4, measuring head. DETAILED DESCRIPTION

[0023] Below, combining the drawings and specific implementation, the utility model is described further, need to explain, under the premise of not conflicting, the following described each embodiment or each technical feature between can be arbitrarily combined to form new embodiment.

[0024] Embodiment 1:

[0025] Please combine Figures 1-3 , this embodiment elaborates the specific composition and work flow of high-precision scanning three -coordinate measuring instrument in detail.

[0026] The high-precision scanning three -coordinate measuring instrument of this embodiment is strictly constructed according to the claim. The arc -shaped guide rail 1 is semicircular, and the bottom is firmly fixed on a specific base through welding, providing stable basic support for the whole measurement system. The gear ring 2 is installed on the arc -shaped guide rail 1, and cooperates with the two groups of upper and lower distribution gear ring matched gear tooth wheel 37, the upper gear ring matched gear tooth wheel 37 is overlapped on the upper surface of the arc -shaped guide rail 1, and the lower gear ring matched gear tooth wheel 37 is engaged with the gear ring 2 below the arc -shaped guide rail 1, to ensure the stability of the movement of the measuring mechanism.

[0027] The automobile parts to be measured are placed in the appropriate position in the measurement area. Turn on the high-precision scanning three-coordinate measuring instrument. At this time, the arc-shaped guide rail 1 stably supports the entire measuring instrument, the gear ring 2 and the gear ring matching clamping gear 37 are in the meshing preparation state of waiting for work, the parts of the three-coordinate measuring mechanism 3 are connected stably, and the measuring head 4 is located at the initial position, ready to start measuring.

[0028] The parts of the three-coordinate measuring mechanism 3 are connected tightly. The fixed frame 31 is fixedly connected with the receiving seat 33 through the fixed sleeve 32 to provide a stable mounting platform for the driving motor 34 and other components. The driving motor 34 is installed on the receiving seat 33, and its output shaft is connected with the driving rod 35 through a shaft coupling. The shaft coupling is keyed connected with the output shaft of the driving motor 34 and the driving rod 35 at both ends, which not only guarantees effective power transmission, but also compensates for the installation error of the two shafts.

[0029] The driving rod 35 penetrates through the driving rod limiting sleeve 36 and is connected with the gear ring matching clamping gear 37. The driving rod 35 is rotationally connected with the driving rod limiting sleeve 36, so that the driving rod 35 can rotate smoothly and maintain the stable meshing and movement of the gear ring matching clamping gear 37 and the gear ring 2. The measuring head 4 is fixed on the bottom bracket of the fixed frame 31 for obtaining measurement data.

[0030] Start the driving motor 34, and the motor output shaft starts to rotate. Since the driving motor 34 is connected with the driving rod 35 through a shaft coupling, the power is stably transmitted to the driving rod 35 to drive it to rotate. The shaft coupling effectively compensates for the installation error between the two shafts, ensures the stability of power transmission, and avoids component wear or measurement deviation caused by error.

[0031] When the driving rod 35 rotates, it drives the gear ring matching clamping gear 37 connected thereto to rotate. Under the action of gear meshing, the gear ring matching clamping gear 37 rolls along the gear ring 2. The upper gear ring matching clamping gear 37 rolls on the upper surface of the arc-shaped guide rail 1, thereby driving the entire three-coordinate measuring mechanism 3 to move along the arc-shaped guide rail 1. The driving rod limiting sleeve 36 limits the movement track of the driving rod 35, ensures the stable meshing of the gear ring matching clamping gear 37 and the gear ring 2, and enables the measuring head 4 to move along the predetermined path.

[0032] When the three-coordinate measuring mechanism 3 moves, the fixed frame 31 moves synchronously, and the measuring head 4 installed on the bottom bracket of the fixed frame 31 moves accordingly to scan and measure the automobile parts to be measured. The measuring head 4 obtains the coordinate data of the surface of the parts, and transmits these data to the control system of the measuring instrument in real time. The control system processes and analyzes the data to calculate the size, shape and other parameters of the parts, such as the diameter of the hole of the automobile engine cylinder body and the diameter of the piston, to provide accurate data support for the quality detection of automobile parts.

[0033] The high-precision scanning three-coordinate measuring instrument mainly moves the measuring head under the constraint of the arc-shaped guide rail by driving the motor to drive the relevant components, so as to realize high-precision measurement of the automobile parts. The working principle is as follows:

[0034] Preparation stage: the automobile parts to be measured are placed in a suitable measurement position, and the high-precision scanning three-coordinate measuring instrument is turned on. At this time, the components of the measuring instrument are in the initial state, the arc-shaped guide rail 1 is fixed on the base to provide basic support for the whole measurement movement; the gear ring 2 is installed on the arc-shaped guide rail 1, and the gear ring matching clamping gear 37 is in the meshing state; the components of the three-coordinate measuring mechanism 3 are connected stably, and the measuring head 4 is located at the bottom support of the fixed frame 31, ready for measurement.

[0035] Drive motor starting and power transmission: start the drive motor 34, and the output shaft of the drive motor 34 starts to rotate. Since the drive motor 34 and the drive rod 35 are connected through the shaft coupling, and the shaft coupling is connected with the output shaft of the drive motor 34 and the drive rod 35 at both ends, the power of the drive motor 34 can be stably transmitted to the drive rod 35 to drive the drive rod 35 to rotate. This connection mode not only can effectively transmit power, but also can compensate the installation error between the two shafts to ensure the stability of power transmission.

[0036] Gear transmission and measuring head movement: the drive rod 35 penetrates through the drive rod limiting sleeve 36 and is rotationally connected therewith, and the rotation of the drive rod 35 drives the gear ring matching clamping gear 37 connected therewith to rotate. The gear ring matching clamping gear 37 is distributed in two groups above and below, the lower group is engaged with the gear ring 2 below the arc-shaped guide rail 1, and the upper group is overlapped on the upper surface of the arc-shaped guide rail 1. Under the action of gear engagement, the gear ring matching clamping gear 37 rolls along the gear ring 2, thereby driving the whole three-coordinate measuring mechanism 3 to move along the arc-shaped guide rail 1.

[0037] Measurement process: the fixed frame 31 in the three-coordinate measuring mechanism 3 is fixedly connected with the bearing seat 33 through the fixing sleeve 32, and moves synchronously with the movement of the three-coordinate measuring mechanism 3. The measuring head 4 installed on the bottom support of the fixed frame 31 moves synchronously, and scans and measures the automobile parts to be measured. In the measurement process, the measuring head 4 obtains the coordinate data of the surface of the parts, and transmits these data to the control system of the measuring instrument for processing and analysis, so as to obtain the size, shape and other parameters of the parts.

[0038] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential change and replacement made by a person skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A high-precision scanning coordinate measuring machine, characterized in that, The arc-shaped guide rail (1), the gear ring (2), the three-coordinate measuring mechanism (3) and the measuring head (4) are included. The three-coordinate measuring mechanism (3) includes a fixed frame (31), a fixed sleeve (32), a receiving seat (33), a driving motor (34), a driving rod (35), a driving rod limiting sleeve (36), a gear ring matched clamping gear (37) and a clamping gear fixed support (38); the arc-shaped guide rail (1) is provided with the gear ring (2), the gear ring (2) is engaged with the gear ring matched clamping gear (37); the gear ring matched clamping gear (37) is installed on the clamping gear fixed support (38), the clamping gear fixed support (38) is provided with the driving rod limiting sleeve (36); the driving rod (35) penetrates in the driving rod limiting sleeve (36), and the driving rod (35) is connected with the matched clamping gear (37). The receiving seat (33) is fixedly connected to the fixed frame (31), and the fixed frame (31) is fixedly connected to the receiving seat (33) through the fixed sleeve (32); the driving motor (34) is installed on the receiving seat (33), and the output shaft of the driving motor (34) is in transmission connection with the driving rod (35); the measuring head (4) is fixedly connected to the bottom support of the fixed frame (31) and is used for measuring the object to be measured.

2. A high precision scanning coordinate measuring apparatus as claimed in claim 1, characterized in that The driving rod (35) and the driving rod limiting sleeve (36) are in rotary connection, the driving rod (35) can rotate smoothly in the driving rod limiting sleeve (36), and stable engagement and movement of the gear ring matched clamping gear (37) and the gear ring (2) are ensured.

3. A high-precision scanning coordinate measuring apparatus according to claim 1, wherein The arc-shaped guide rail (1) is in a semicircular arc shape as a whole, and the bottom of the arc-shaped guide rail (1) is fixed on a specific base by welding.

4. A high-precision scanning coordinate measuring apparatus according to claim 1, wherein The gear ring matched clamping gears (37) are in an upper and lower distribution, the upper gear ring matched clamping gears (37) are overlapped on the upper surface of the arc-shaped guide rail (1), and the lower gear ring matched clamping gears (37) are engaged on the gear ring (2) below the arc-shaped guide rail (1).

5. A high-precision scanning coordinate measuring apparatus according to claim 1, wherein The driving motor (34) and the driving rod (35) are connected through a shaft coupling, and the two ends of the shaft coupling are respectively in key connection with the output shaft of the driving motor (34) and the driving rod (35).

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