A three-coordinate support device for size measurement of multi-model side wall parts

Abstract

The application discloses a three-coordinate support equipment for size measurement of multi-vehicle type side wall parts, comprising: a reference platform, which comprises a positioning plate, which is a vertical plane frame structure; a support plate, which is horizontally arranged at the bottom of the positioning plate and jointly constitutes an inverted T-shaped support structure with the positioning plate; one or more positioning and pressing units, wherein each positioning and pressing unit comprises a positioning module, which is arranged on the positioning plate corresponding to a positioning hole on the part; and a plurality of pressing modules, which are arranged on the positioning plate in a circumferential direction of the part, and the pressing modules are relatively perpendicular to the surface of the edge of the part. The application realizes integrated positioning and installation of various side wall parts through the cooperation of the integral reference platform and the positioning and pressing units. Each positioning and pressing unit adopts a modular structure, and the positioning and pressing units are flexibly combined with different positioning modules and pressing modules to realize positioning and pressing of different parts. The size measurement accuracy is ensured, and the three-coordinate measurement efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts inspection technology. More specifically, this invention relates to a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models. Background Technology

[0002] With the continuous increase in my country's automobile production, the demand for automotive parts from major automakers is developing towards diversification, variety, and integration of multiple parts, which brings new challenges to the dimensional inspection accuracy, precision, and efficiency of automotive parts. Automotive side panel parts are an important component of the body system and are typically inspected using high-precision coordinate measuring machines (CMMs). Traditional CMMs are usually non-standard equipment designed for inspecting fixed dimensions of single-type parts. When the type or size of a part changes, it is necessary to redesign a dedicated CMM or replace the CMM bracket to adapt to the changed part positioning and measurement requirements. This approach requires the fabrication of numerous inspection fixtures and tooling, resulting in high costs. Furthermore, replacing the CMM bracket is cumbersome, significantly impacting inspection efficiency.

[0003] To solve the above problems, it is necessary to design a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models, which can improve the efficiency of measuring the dimensions of side panel parts of different vehicle models while ensuring measurement accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of various vehicle models. It achieves integrated positioning and installation of various side panel parts by using an integrated reference platform in conjunction with multiple positioning and clamping units. Each positioning and clamping unit adopts a modular structure, and can flexibly achieve positioning and clamping of different parts by using different types of positioning modules and clamping modules. When the type and size of the parts to be tested change, the measurement can be completed without replacing the entire CMM support, which greatly improves the efficiency of CMM measurement.

[0005] To achieve these objectives and other advantages according to the present invention, a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models is provided, comprising:

[0006] The reference platform includes a positioning plate, which is a vertically arranged planar frame structure whose shape is adapted to the shape of a single side panel assembly of an automobile; and a support plate, which is horizontally arranged at the bottom of the positioning plate and together with it forms an inverted T-shaped bracket structure.

[0007] One or more positioning and clamping units correspond one-to-one with multiple parts in a single-side assembly of an automobile. Each positioning and clamping unit includes a positioning module, which is disposed on the positioning plate corresponding to the positioning hole on the corresponding part and is detachably connected to it. The positioning module is engaged with the positioning hole on the corresponding part by a positioning pin. Multiple clamping modules are disposed at intervals along the circumference of the corresponding parts on the positioning plate and are detachably connected to it. Each clamping module and the positioning module are located on the same side of the positioning plate. The clamping module clamps the edge surface of the corresponding part perpendicularly.

[0008] Preferably, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models includes a reference platform further comprising multiple moving units spaced around the bottom of the support plate. Each moving unit includes a caster wheel rotatably connected to the support plate via a rotating bracket; and a braking device mounted on the caster wheel to limit its rotational displacement.

[0009] Preferably, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models further includes multiple sets of reinforcing ribs on the reference platform, which are arranged along the length direction between the positioning plate and the support plate. Each set of reinforcing ribs includes two reinforcing ribs, which are symmetrically arranged on both sides of the positioning plate. Each reinforcing rib connects the positioning plate and the support plate on the same side along the width direction and together they form a triangular support structure.

[0010] Preferably, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models further includes a reference platform with multiple hooks fixed at intervals to the top of the positioning plate.

[0011] Preferably, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models includes a positioning plate comprising four vertical positioning beams, which are spaced apart along the length direction and correspond to the A-pillar, B-pillar, C-pillar, and D-pillar of a single side panel assembly of a vehicle, respectively, with any one of the vertical positioning beams vertically fixed on the support plate; and two horizontal positioning beams, which connect the top and bottom ends of the four vertical positioning beams respectively.

[0012] Preferably, in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, in any positioning and clamping unit, at least two positioning modules are respectively disposed at both ends of the corresponding part. Each positioning module includes a positioning base, which is attached to and detachably connected to the surface of one side of the positioning plate; a positioning platform, which is fixed on the positioning base on the side away from the positioning plate and extends outward perpendicular to the plane where the positioning base is located; and a positioning pin, which is fixed to the outer end of the positioning platform and is positioned opposite to the positioning hole on the corresponding part.

[0013] Preferably, in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, the clamping module includes:

[0014] A clamping base is fitted to and detachably connected to the surface of one side of the positioning plate;

[0015] A clamping platform is fixed to the clamping base on the side away from the positioning plate and extends outward perpendicular to the plane of the clamping base;

[0016] The clamping device includes a first clamping mechanism, which is a quick clamping mechanism, which is mounted on the clamping platform via a frame; and a second clamping mechanism, which includes a clamping block mounted on the clamping platform, which cooperates with the chuck of the quick clamping mechanism to clamp the edge surface of the corresponding part from both sides. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular to the corresponding clamping surfaces.

[0017] Preferably, in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, in the same clamping device, the frame of the first clamping mechanism is fixed to one side of the clamping block of the second clamping mechanism and connected to it as a whole. The clamping block is hinged to the clamping platform through an adjustment knob. The adjustment knob is configured to limit the relative rotation angle between the clamping block and the clamping platform.

[0018] Preferably, in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, the first clamping mechanism and the second clamping mechanism are mounted on the positioning plate through different clamping platforms and clamping bases in the same clamping device;

[0019] The second clamping mechanism further includes a limiting pin, which passes through and is pinned to the pin holes on the clamping block and the corresponding clamping platform in sequence; and a limiter, which is configured to limit the relative rotation between the clamping block and the corresponding clamping platform.

[0020] Preferably, in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, multiple clamping devices respectively clamp the corresponding edges of the parts to surfaces arranged in different directions, and the clamping direction of any clamping device is perpendicular to the corresponding clamping surface.

[0021] The present invention has at least the following beneficial effects:

[0022] This invention employs an integrated support structure, using an integral reference platform in conjunction with multiple positioning and clamping units to achieve integrated positioning and installation of various side panel parts. It can simultaneously measure the dimensions of the vehicle side panel assembly and its constituent parts, improving the accuracy of overall dimensional and component fit measurements. Each positioning and clamping unit uses a modular structure, flexibly achieving positioning and clamping of parts with different positions, sizes, and structures through different types of positioning and clamping modules. When the type or size of the part to be inspected changes, it is not necessary to replace the entire coordinate measuring machine (CMM) support; simply adjusting the arrangement of the positioning and clamping modules is sufficient to handle the changed parts. The stable positioning and clamping of the device allows for better adaptation to dimensional measurement work during frequent parts switching. It solves the problem of needing to replace the coordinate measuring machine (CMM) support equipment when switching production of side panel parts for multiple vehicle models. It reduces the workload of inspection personnel when the types and sizes of parts change. While ensuring the high precision and accuracy of CMM measurement, it improves the applicability and practicality of a single CMM support equipment for measuring side panel parts of different vehicle models. It can work with a CMM to quickly and accurately measure the dimensions of parts, saving inspection costs and effectively shortening measurement time. In today's rapidly developing automotive industry, it has widespread application value.

[0023] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models, according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the connection structure between the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models and the single side panel assembly of an automobile, as described in the above embodiments.

[0026] Figure 3 This is a schematic diagram of the connection structure between the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models and the upper part of the front side panel assembly as described in the above embodiments;

[0027] Figure 4 This is a schematic diagram of the connection structure between the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models and the rear side panel sub-assembly as described in the above embodiments.

[0028] Figure 5 This is a schematic diagram of the positioning module described in the above embodiments;

[0029] Figure 6 This is a schematic diagram of the clamping module in the first form described in the above embodiments;

[0030] Figure 7 This is a schematic diagram of the clamping module described in the above embodiments under a second form;

[0031] Figure 8 This is a schematic diagram of the clamping module described in the above embodiments in a third form;

[0032] Figure 9 This is a schematic diagram of the clamping module described in the above embodiments under the fourth form;

[0033] Figure 10 This is a schematic diagram of the clamping module described in the above embodiments in the fifth form.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Positioning plate; 2. Support plate; 3. Positioning module; 4. Clamping module; 5. Single side panel assembly; 6. Upper front side panel assembly; 7. Rear side panel sub-assembly; 8. Moving unit; 9. Reinforcing rib; 10. Hook; 11. Vertical positioning beam; 12. Horizontal positioning beam; 31. Positioning base; 32. Positioning platform; 33. Positioning pin; 41. Clamping base; 42. Clamping platform; 43. First clamping mechanism; 44. Second clamping mechanism; 45. Adjusting knob; 46. Limit pin; 47. Limiter; 431. Frame; 432. Clamping rod; 433. Handle; 434. Connecting rod; 435. Clamp. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0037] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] like Figure 1-10 As shown, the present invention provides a coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models, comprising:

[0039] The reference platform includes a positioning plate 1, which is a vertically arranged planar frame structure whose shape is adapted to the shape of a single side panel assembly of an automobile; and a support plate 2, which is horizontally arranged at the bottom of the positioning plate 1 and together with it forms an inverted T-shaped bracket structure.

[0040] Multiple positioning and clamping units correspond one-to-one with multiple parts in the single-side assembly 5 of the vehicle. Each positioning and clamping unit includes a positioning module 3, which is disposed on the positioning plate corresponding to the positioning hole on the corresponding part and is detachably connected to it. The positioning module 3 is engaged with the positioning hole on the corresponding part by a positioning pin 33. Multiple clamping modules 4 are disposed on the positioning plate at intervals along the circumference of the corresponding parts and are detachably connected to it. Each clamping module 4 and the positioning module 3 are located on the same side of the positioning plate 1. The clamping module 4 clamps the edge surface of the corresponding part perpendicularly.

[0041] In actual side panel component production, a single side panel assembly 5 of an automobile may be disassembled into multiple sub-assemblies for separate processing. These sub-assemblies have different shapes and structures. When using the same coordinate measuring machine (CMM) for component dimensional measurement, to position different components in the same standard coordinate system, it is often necessary to design corresponding CMM supports based on the different component structures and dimensions. This significantly increases the material and manufacturing costs required for component dimensional measurement, and this method makes it difficult to quickly and accurately measure the mating dimensions between different components. The above technical solution provides an integrated CMM support for measuring the dimensions of side panel components. The reference platform can be set in a dedicated inspection chamber for component dimensional measurement. The positioning plate and support plate are set perpendicularly to each other and together form an inverted T-shaped support structure, creating a stable support structure on the ground. The planar shape of the positioning plate is designed according to the shape of the single side panel assembly of the automobile, covering all the positions of the side panel components and providing measurement space. This allows the entire single side panel assembly or its multiple sub-assemblies produced separately to be positioned and installed on the CMM support equipment (in conjunction with the CMM) for dimensional measurement. Specifically, one or more positioning and clamping units are spaced apart on one side of the positioning plate. Each part to be measured is accurately positioned and installed on the same side of the positioning plate through the corresponding positioning and clamping unit. When there are multiple side panel parts (sub-assembly parts) in different positions that need to be measured, the different parts can be installed on the positioning plate through the corresponding positioning and clamping units and spliced ​​together to form a whole (side panel assembly). Thus, it is possible to conveniently measure the size of a single part, and also to accurately measure the mating dimensions between different parts and the overall size of the assembled automotive side panel assembly in the same coordinate system. The position of each part after being positioned and clamped on the positioning plate corresponds to its relative installation position in the overall side panel assembly. The measurement data has high accuracy and reference value. In practical applications, it can realize the simultaneous measurement of multiple side panel parts in different positions (types), which simplifies the workload of inspection personnel and improves inspection efficiency.Meanwhile, the positioning and clamping unit adopts a modular structure. The positioning module is set according to the positioning holes on the corresponding part to be measured, and is inserted into the positioning holes on the part through positioning pins. During installation, the part can be directly assembled from the outside to the positioning pin of the positioning module through the original positioning holes, thereby completing the initial positioning connection between the part and the positioning plate. Multiple clamping modules are set at intervals along the outer contour line of the part on the positioning plate. After the part is initially connected by the positioning module, the clamping modules are naturally distributed at the edge contour line of the part. Then, the internal structure of the clamping module is adjusted so that it presses the welding surface at the edge of the part in a direction perpendicular to the contact surface of the corresponding part. After multiple clamping modules are clamped, an overall positioning and clamping structure with central positioning and circumferential clamping is formed on the part, which ensures the stability and positional accuracy of the part installed on the positioning plate. The contact surface between each clamping module and the corresponding part is the welding surface at the edge of the part. This multi-point distributed clamping and positioning method ensures accurate positioning and stable installation without affecting the appearance of the part, effectively avoiding quality problems such as deformation of the appearance and key dimensions of large parts during dimensional measurement. Furthermore, both the positioning module and the clamping module are detachably connected to the positioning plate. The side of the positioning plate is a plane with a certain length and width. When the shape and size of the part to be measured at the same location changes (i.e., to adapt to changes in different vehicle models), the installation position of a single positioning module or clamping module on the positioning plate can be adjusted to adapt to the changing part size, contact surface angle, etc. This allows for flexible positioning and clamping of parts with different positions, sizes, and structures. When the type and size of the part to be tested change, it is not necessary to replace the entire coordinate measuring machine (CMM) support; the entire CMM can be replaced simply by adjusting the arrangement of the positioning and clamping modules. The stable positioning and clamping of paired parts allows for better adaptation to dimensional measurement work during frequent part switching. This solves the problem of needing to replace the coordinate measuring machine (CMM) support equipment when switching production of side panel parts for multiple vehicle models. It reduces the workload of inspection personnel when the types and sizes of parts change. While ensuring the advantages of high precision and accuracy of CMM measurement, it improves the applicability and practicality of a single CMM support equipment for measuring side panel parts of different vehicle models. It can work with a CMM to quickly and accurately measure part dimensions, saving inspection costs while further shortening measurement time and improving dimensional inspection efficiency.

[0042] In another technical solution, the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models includes a reference platform further comprising multiple moving units 8 spaced around the bottom of the support plate 2. Each moving unit 8 includes a caster wheel, which is rotatably connected to the support plate 2 via a rotating bracket; and a braking device mounted on the caster wheel to limit its rotational displacement. The multiple moving units, supported at the bottom of the support plate, can move the entire CMM support device in different directions on the ground. Since coordinate measuring machines are generally fixed in a dedicated testing room and are inconvenient to move, when the part to be measured is large or difficult to transport, the moving units can move the entire CMM support device to the part's storage location. After the part is assembled with the positioning plate, it can be moved back to the testing room for dimensional measurement. This also avoids structural interference or collisions between the part and the coordinate measuring machine during the part's positioning and installation process, making it more convenient for testing personnel to operate. Specifically, the moving unit can use casters with brakes. Its rotating bracket is fixed to the bottom of the support plate. A circular slide rail is provided on the bottom surface of the rotating bracket. The rollers of the omnidirectional wheels are mounted on the circular slide rail via sliders and slide along its length. Simultaneously, the rollers are rotatably connected to the bottom end of the rotating bracket via axles, thus enabling the rollers to roll freely in multiple directions. The omnidirectional wheels are also equipped with matching brake devices to lock the wheels after moving to a suitable measurement position, ensuring the coordinate measuring machine (CMM) support is stably fixed to the ground in the measurement area. In this embodiment, the braking device adopts a side brake structure, which includes a brake pad, which is sleeved on the outer side of the top arc surface of the roller and engaged with both ends of the wheel axle through a limiting groove. The brake pad can move up and down along the length direction of the limiting groove. A brake pedal is disposed at the outer end of the wheel axle and rotatably connected to it. The brake pedal is connected to the brake pad through a cam mechanism. When the brake pedal is rotated clockwise under the action of an external force, the brake pad is moved downward along the limiting groove by the force of the cam mechanism, that is, the brake pad presses down against the adjacent arc surface of the roller, thereby achieving braking. When it is necessary to use the moving unit for movement, the brake pedal is released (rotated) in the opposite direction, so that the cam mechanism drives the brake pad to move upward along the limiting groove, and the brake pad no longer presses against the roller surface. At this time, the roller can rotate freely.

[0043] In another technical solution, the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models includes a reference platform further comprising multiple sets of reinforcing ribs 9, which are arranged along the length direction between the positioning plate 1 and the support plate 2. Each set of reinforcing ribs 9 includes two reinforcing ribs symmetrically arranged on both sides of the positioning plate 1. Each reinforcing rib 9 connects the positioning plate 1 and the support plate 2 on the same side along the width direction, forming a triangular support structure together. Specifically, since the positioning module and the clamping module are both installed on the same side of the positioning plate, after the part to be measured is assembled, it is equivalent to suspending and fixing the part on one side surface of the positioning plate through the positioning and clamping unit. At this time, the force on this side of the positioning plate is much greater than the force on the other side, which poses a risk of deformation of the positioning plate due to force imbalance. Therefore, multiple sets of reinforcing ribs are added between the positioning plate and the support plate, which fix the side of the positioning plate to the top surface of the support plate and form a stable triangular support structure together with the positioning plate and the support plate. This effectively balances the force on the positioning plate during the measurement operation and ensures the working stability of the overall CMM support device.

[0044] In another technical solution, the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models includes a reference platform further comprising multiple hooks 10, which are fixed at intervals to the top of the positioning plate 1. This facilitates the use of lifting equipment to hoist the entire CMM support device to a designated position as needed for inspection operations, enabling the installation of the parts to be measured or the use of a coordinate measuring machine for dimensional inspection.

[0045] In another technical solution, the coordinate measuring machine (CMM) support device for measuring the dimensions of side panel parts of multiple vehicle models includes a positioning plate 1 comprising four vertical positioning beams 11, spaced apart along the length and corresponding to the A-pillar, B-pillar, C-pillar, and D-pillar of the single side panel assembly 5 of the vehicle. Each vertical positioning beam 11 is vertically fixed to the support plate 2. Two horizontal positioning beams 12 connect the top and bottom ends of the four vertical positioning beams 11, respectively. In the above technical solution, the shape and structure of the positioning plate are adaptively designed according to the single side panel assembly of the vehicle. To meet the testing needs of different side panel parts, multiple frame beams in the planar frame of the positioning plate are designed according to the key frame structure (outer frame, A~D pillars) of the side panel assembly, so that when each sub-assembly part is installed on the positioning plate, a positioning beam in a suitable position can adaptively position and clamp the part through the positioning and clamping unit. The lengths of the vertical and horizontal positioning beams are adapted to the corresponding side assembly structures, and they also have a certain width, allowing sufficient adjustment space for the positioning and clamping units on each positioning beam to accommodate changes in part shape and size during vehicle model switching. Multiple mounting holes are evenly distributed on the surfaces (sides) of the vertical and horizontal positioning beams, corresponding to the mounting holes on the bases of each module (positioning module, clamping module) in the positioning and clamping unit. Quick assembly / disassembly of each module in the positioning and clamping unit and the positioning beams can be achieved through the matching bolts, allowing for easy installation, disassembly, and relative position adjustment.

[0046] In another technical solution, the coordinate measuring machine (CMM) for measuring the dimensions of side panel parts of multiple vehicle models includes at least two positioning modules 3 in any positioning and clamping unit, each positioned at both ends of the corresponding part. Each positioning module 3 includes a positioning base 31, which is fitted onto and detachably connected to one side of the positioning plate 1; a positioning platform 32, fixed to the positioning base 31 on the side away from the positioning plate 1 and extending outward perpendicular to the plane of the positioning base 31; and a positioning pin 33, fixed to the outer end of the positioning platform 32 and aligned with the positioning hole on the corresponding part. At least two positioning modules are required for each part to be measured to ensure positioning stability. Figure 2 As shown, when the part to be measured is a single-side panel assembly 5 of an automobile, two positioning modules are provided on the corresponding structure of the positioning plate for the two positioning holes at the front and rear ends (A-pillar and near the D-pillar) of the single-side panel assembly, which can ensure the accurate positioning of the single-side panel assembly; as shown Figure 3 As shown, when the part to be measured is the upper front panel assembly 6, two positioning modules are provided on the corresponding structure of the positioning plate corresponding to the two positioning holes at the front and rear ends (on the A-pillar and B-pillar) of the assembly, which can ensure the accurate positioning of the upper front panel assembly; as shown. Figure 4As shown, when the part to be measured is the rear side panel assembly 7, two positioning modules are provided on the corresponding structure of the positioning plate to ensure the accurate positioning of the rear side panel assembly, corresponding to the two positioning blocks at the front and rear ends (C-pillar and near the D-pillar). Specifically, when using the positioning modules to initially position the part, since the size (diameter) of the positioning pin is adapted to the positioning hole, the positioning hole on the part is directly aligned from the outside with the corresponding positioning module (positioning pin) and snapped inward. The part can then be hung on one side of the positioning plate. Then, multiple clamping modules set along the outline of the part are pressed in sequence to stably install the part on the positioning plate.

[0047] In another technical solution, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models includes a clamping module 4 comprising:

[0048] A pressing base 41 is fitted to and detachably connected to the surface of one side of the positioning plate 1;

[0049] The clamping platform 42 is fixed on the clamping base 41 on the side away from the positioning plate 1 and extends outward perpendicular to the plane where the clamping base 41 is located;

[0050] The clamping device includes a first clamping mechanism 43, which is a quick clamping mechanism, and is mounted on the clamping platform via a frame; and a second clamping mechanism 44, which includes a clamping block mounted on the clamping platform 42, which cooperates with the chuck of the quick clamping mechanism to clamp the edge surface of the corresponding part from both sides. The clamping directions of the first clamping mechanism 43 and the second clamping mechanism 44 are perpendicular to the corresponding clamping surfaces.

[0051] In the above technical solution, both the first and second clamping mechanisms are mounted on the clamping platform and cooperate to clamp the edge surfaces of the parts. Specifically, the first clamping mechanism 43 is a quick-clamping mechanism, which is a clamp designed based on the mechanical principle of a double rocker mechanism in a planar four-bar linkage. It mainly consists of a frame 431, a clamping rod 432, a handle 433, a connecting rod 434, and a chuck 435. The frame 431 is fixed on the clamping platform 42 as a base. The clamping rod 432 and the handle 433 are hinged to different positions on the frame 431. The connecting rod 434 is located between the clamping rod 432 and the handle 433 and is hinged to both the clamping rod and the handle. The chuck 435 is... The clamping rod 432 is located at the end away from the frame. Therefore, when the handle 433 is turned, the clamping rod 432 will also rotate under the action of the connecting rod, so that the pressure head 435 can be raised (opened) and pressed down (clamped). During the rotation of the handle, when the connecting rod and the clamping rod, the two hinge points of the handle and the hinge point of the clamping rod / handle and the frame rotate to the same straight line, according to the dead point clamping principle, the linkage mechanism is at the dead point position, that is, the pressure head is stably locked in the current position (pressing the surface of the part) and will not be released. In this embodiment, the first clamping mechanism is a vertical clamp. When the handle is rotated to a position perpendicular to the clamping rod, the pressure head is driven down and locked onto one side of the part surface. Simultaneously, the clamping block of the second clamping mechanism is correspondingly positioned on the other side of the part surface. Thus, a relative clamping structure is formed on both sides of the part clamping position. The first and second clamping mechanisms cooperate from both sides to clamp the part in the middle. To ensure the stability of the clamping, the relative clamping direction of the first and second clamping mechanisms is perpendicular to the corresponding clamping surface (on the part). Typically, the clamping surface selected at the edge of the part is the welding surface of the part, which is a clamping surface reserved for subsequent part processing. The clamping device clamps the part at this location, ensuring the reliability of the positioning and clamping, and avoiding damage to the appearance surface of the part.

[0052] Furthermore, within the same positioning and clamping unit, when the positioning module and any clamping module are close to each other (approximately overlapping), the positioning module and the clamping module can share the positioning / clamping base and the positioning / clamping platform. In this case, the structure of the clamping module is configured in the first form, such as... Figure 6 As shown, the positioning pin and the clamping device are integrated on the same set of base-platform (i.e., clamping base and clamping platform), thereby effectively saving the installation space on the positioning plate while ensuring the functionality of the positioning module and the clamping module, and also saving the amount of material consumed in the manufacture of the coordinate measuring machine support equipment, making its structure more streamlined.

[0053] In another technical solution, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, in the same clamping device, the frame of the first clamping mechanism 43 is fixed to one side of the clamping block of the second clamping mechanism 44 and connected to it as a whole. The clamping block is hinged to the clamping platform 42 via an adjusting knob 45, which is configured to limit the relative rotation angle between the clamping block and the clamping platform. Specifically, when there is a need to adjust the angle of the clamping direction of the clamping device, the clamping module can be configured in a second form, such as... Figure 7 As shown, the first clamping mechanism is connected to the clamping block of the second clamping mechanism as a whole through the frame and is installed together on the clamping platform. The clamping block and the clamping platform adopt a hinge structure. The adjustment knob is set on the hinge shaft between the clamping block and the clamping platform, so that the relative installation angle between the clamping device and the clamping platform can be adjusted to adapt to the clamping surface at the edge of the part at different angles (i.e., different edge shapes of the part). After the clamping device is installed in place on the clamping platform and adjusted to a suitable installation angle, turn the adjustment knob clockwise to lock the clamping block relative to the clamping platform, thus completing the assembly of the corresponding clamping module. When the size of the part to be measured at this position changes, the clamping module can be disassembled and reassembled as a whole, and its installation position on the positioning plate can be adjusted to adapt to the part. When the shape (clamping surface) angle of the part to be measured at this position also changes, while adjusting the relative installation position of the clamping module and the positioning plate, the clamping direction of the clamping device can also be adjusted by loosening the adjustment knob and rotating the clamping device as a whole, so that the clamping device can better adapt to different tilt angles of the clamping surface at the edge of the part (keeping the clamping direction perpendicular to the clamping surface).

[0054] In another technical solution, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models has the first pressing mechanism 43 and the second pressing mechanism 44 mounted on the positioning plate 1 through different pressing platforms 42 and pressing bases 41 in the same pressing device.

[0055] The second clamping mechanism 44 further includes a limiting pin 46, which passes through the pin holes on the clamping block and the corresponding clamping platform in sequence and is pinned to them; and a limiter 47, which is configured to limit the relative rotation between the clamping block and the corresponding clamping platform.

[0056] In the above technical solution, when the installation space for the clamping module at the corresponding installation position is limited, the clamping module can be configured as a third type, such as... Figure 8As shown, the edge of the part to be clamped is inwardly recessed (the part is not shown in the figure). This means the second clamping mechanism needs to extend into the part from the inside to abut against its inner surface, while the first clamping mechanism is positioned outside the part to correspondingly clamp its outer surface. In this case, the first and second clamping mechanisms are configured as separate structures. The first clamping mechanism is mounted on the positioning plate via a separate clamping platform and base, while the second clamping mechanism is mounted on the positioning plate via another set of clamping platforms and bases. Furthermore, the position of the clamping block inside the part is difficult to observe from the outside. To ensure the accuracy of the clamping block's positioning, a limit pin and a limit switch are additionally installed on the second clamping mechanism for limiting its position. Specifically, limiting mounting holes are set on the clamping block and the corresponding clamping platform. After the clamping block extends into the part by a set distance, the outer end of the clamping block is inserted into the limiting mounting holes in sequence through limiting pins to limit the relative installation position of the clamping block and the clamping platform. At this time, the clamping block can still rotate relative to the limiting pins. After the inner end of the clamping block is rotated to abut against the inner surface of the part, the limiting device is used to lock the clamping block and the clamping platform relative to each other. This completes the accurate positioning and installation of the clamping block inside the part (which cannot be directly observed). The position of the inner end of the clamping block inside the part is locked by the cooperation of the limiting pin and the limiting device, which ensures the installation accuracy of the clamping block and enables it to better cooperate with the external first clamping mechanism to achieve the clamping of the clamping surface at the edge of the part.

[0057] In another technical solution, the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models has multiple clamping devices that respectively clamp the corresponding edges of the parts to surfaces arranged in different directions, and the clamping direction of any clamping device is perpendicular to the corresponding clamping surface.

[0058] In the above technical solution, multiple clamping devices can be configured within the same clamping module, thereby clamping multiple clamping surfaces at the same location on the part. Specifically, for the above situation, the clamping module has two configuration forms. In the fourth form, such as... Figure 9 As shown, the multiple clamping devices correspond one-to-one with multiple first clamping mechanisms and multiple second clamping mechanisms. This is suitable for situations where different clamping surfaces at the edge of a part are basically located on the same plane (i.e., the part's edge is narrow and passes through the clamping platform along a fixed direction; in this case, multiple clamping devices can be set on both sides of the clamping platform to clamp the clamping surfaces on both sides at the same length position on the part's edge). In the fifth form, as... Figure 10As shown, an additional first clamping mechanism is set separately in addition to the matching first and second clamping mechanisms. This is suitable for situations where the structure at the edge of the part is relatively complex and different clamping surfaces at the edge of the part are located on different planes (the figure shows the welding surface of the part and the side wall surface of the part that needs to be clamped simultaneously). In this case, the matching first and second clamping mechanisms normally clamp the corresponding welding surface of the part edge, while the separately set first clamping mechanism is installed on the same clamping platform, but clamps the side wall of the part located on the welding surface in a relatively perpendicular direction. Thus, even when the shape and structure at the edge of the part are relatively complex, the clamping module can still ensure stable clamping.

[0059] In this embodiment, when the part to be measured is the overall structure of a single side panel assembly of an automobile, all the positioning modules and clamping modules in the coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models can be regarded as a single positioning and clamping unit, directly positioning and clamping the overall structure of the single side panel assembly of the automobile; when the part to be measured is a single side panel assembly of an automobile that has been disassembled into multiple sub-assemblies, multiple positioning and clamping units can operate simultaneously, respectively clamping multiple sub-assemblies (not limited to) within the single side panel assembly of the automobile. Figure 3-4 The sub-assembly component structure shown is described below. Each positioning and clamping unit includes multiple clamping modules. Each clamping module can be configured in different ways depending on the specific conditions of the surface of the edge of the part to be clamped (such as the setting direction and angle of the welding surface at the edge of the part). Figure 6-10 The five forms shown are pressed accordingly.

[0060] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models, characterized in that, include: The reference platform includes a positioning plate, which is a vertically arranged planar frame structure whose shape is adapted to the shape of a single side assembly of a vehicle; A support plate is horizontally positioned at the bottom of the positioning plate and together with it forms an inverted T-shaped bracket structure; One or more positioning and clamping units correspond one-to-one with multiple parts in a single-side assembly of an automobile. Each positioning and clamping unit includes a positioning module, which is disposed on the positioning plate corresponding to the positioning hole on the corresponding part and is detachably connected to it. The positioning module is engaged with the positioning hole on the corresponding part by a positioning pin. Multiple clamping modules are disposed on the positioning plate at circumferential intervals along the corresponding parts and are detachably connected to it. Each clamping module and the positioning module are located on the same side of the positioning plate. The clamping module clamps the edge surface of the corresponding part perpendicularly. The clamping module includes: A clamping base is fitted to and detachably connected to the surface of one side of the positioning plate; A clamping platform is fixed to the clamping base on the side away from the positioning plate and extends outward perpendicular to the plane of the clamping base; The clamping device includes a first clamping mechanism, which is a quick clamping mechanism, which is mounted on the clamping platform via a frame; and a second clamping mechanism, which includes a clamping block mounted on the clamping platform, which cooperates with the chuck of the quick clamping mechanism to clamp the edge surface of the corresponding part from both sides. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular to the corresponding clamping surfaces. In the same clamping device, the first clamping mechanism and the second clamping mechanism are mounted on the positioning plate by different clamping platforms and clamping bases; The second clamping mechanism further includes a limiting pin, which passes through and is pinned to the pin holes on the clamping block and the corresponding clamping platform in sequence; and a limiter, which is configured to limit the relative rotation between the clamping block and the corresponding clamping platform.

2. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, The reference platform also includes multiple moving units, which are spaced apart around the bottom of the support plate. Each moving unit includes a caster wheel, which is rotatably connected to the support plate via a rotating bracket; and a braking device, which is mounted on the caster wheel and used to limit its rotational displacement.

3. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, The reference platform also includes multiple sets of reinforcing ribs, which are arranged between the positioning plate and the support plate along the length direction. Each set of reinforcing ribs includes two reinforcing ribs, which are symmetrically arranged on both sides of the positioning plate. Each reinforcing rib connects the positioning plate and the support plate on the same side along the width direction and together they form a triangular support structure.

4. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, The reference platform also includes multiple hooks, which are fixed at intervals to the top of the positioning plate.

5. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, The positioning plate includes four vertical positioning beams, which are spaced apart along the length direction and correspond to the A-pillar, B-pillar, C-pillar, and D-pillar of a single side assembly of the vehicle, respectively. Each vertical positioning beam is vertically fixed to the support plate; and two horizontal positioning beams, which connect the top and bottom ends of the four vertical positioning beams, respectively.

6. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, In any positioning and clamping unit, at least two positioning modules are respectively disposed at both ends of the corresponding part. Each positioning module includes a positioning base, which is attached to and detachably connected to the surface of one side of the positioning plate; a positioning platform, which is fixed on the positioning base on the side away from the positioning plate and extends outward perpendicular to the plane where the positioning base is located; and a positioning pin, which is fixed to the outer end of the positioning platform and is positioned opposite to the positioning hole on the corresponding part.

7. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, In the same pressing device, the frame of the first pressing mechanism is fixed to one side of the pressing block of the second pressing mechanism and is connected to it as a whole. The pressing block is hinged to the pressing platform through an adjustment knob. The adjustment knob is configured to limit the relative rotation angle between the pressing block and the pressing platform.

8. The coordinate measuring machine for measuring the dimensions of side panel parts of multiple vehicle models as described in claim 1, characterized in that, The multiple clamping devices respectively clamp the corresponding edges of the parts on surfaces arranged in different directions, and the clamping direction of any clamping device is perpendicular to the corresponding clamping surface.

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