Multifunctional measuring equipment for mechanical engineering

Abstract

The invention discloses a multifunctional measuring device for mechanical engineering, the measuring device is used for standard and three-dimensional dimension measurement of cylinder, round pipe and bent pipe parts, the measuring device comprises a frame, a loading mechanism and a multi-degree-of-freedom measuring mechanism, the frame is a door-shaped frame, the loading mechanism is arranged at the bottom side of the frame, and the multi-degree-of-freedom measuring mechanism is arranged at the bottom side of the frame. A multi-degree-of-freedom measuring mechanism is arranged on the rack; the carrying mechanism comprises a carrying module and a clamp assembly, the carrying module is provided with a control panel, two sets of side supporting rods, a transverse supporting rod, a first driving motor, a transmission belt, a mounting base and a carrying disc, the side supporting rods are arranged on the two sides of the bottom side of the rack in parallel, and the front ends and the rear ends of the two sets of side supporting rods are connected through the transverse supporting rod. The measuring equipment is used for standard and three-dimensional size measurement of cylinder, round pipe and bent pipe parts in the mechanical field, the equipment functionality is high, and batch measurement can be achieved.

Description

Technical Field

[0001] The invention relates to the field of mechanical parts standards and three-dimensional measurement, and in particular to a multifunctional measuring device for mechanical engineering. Background Art

[0002] Mechanical engineering is an engineering discipline that involves the use of physical laws to analyze, design, produce and repair mechanical systems. Mechanical engineering is an applied discipline that uses relevant natural sciences and technical sciences as theoretical foundations, combined with technical experience in production practice, to study and solve all theoretical and practical problems in the development, design, manufacture, installation, use and repair of various machines. After the 17th century, capitalist commodity economy developed rapidly in Britain, France and other countries, and many people devoted themselves to improving the working machinery needed by various industries and developing new power machinery - steam engines. In the late 18th century, the application of steam engines was extended from the mining industry to the textile, flour and metallurgical industries. The main material for making machinery gradually changed from wood to metal. The machinery manufacturing industry began to take shape and gradually became an important industry.

[0003] Common mechanical engineering parts include rods, shafts, tubes, etc., among which rods, shafts, and tubes are divided into straight rods / shafts / tubes and bent rods / shafts / tubes. Since the specifications, sizes, and curvatures of straight rods / shafts / tubes and bent rods / shafts / tubes are different, the following solutions are generally used in the market:

[0004] 1. Solution 1: Chinese patent CN117663992A discloses a shaft parts measuring platform and a shaft parts length calculation method. This patent can accurately calculate the length of shaft parts, greatly improving the efficiency and accuracy of shaft parts measurement.

[0005] 2. Solution 2: Chinese patent CN117664001A discloses a device and method for quickly identifying the diameter and length of rod-like parts. The patent measures the diameter by physically limiting the generatrix on the outer circumference of the rod-like parts to improve the detection efficiency.

[0006] However, the measurement methods of the above two measuring devices are relatively simple, and they are unable to measure contours and curvatures, and they are also unable to perform measurement processing in batches, resulting in low efficiency. Based on this background, the present invention proposes a multifunctional measuring device for mechanical engineering, which is used for standard and three-dimensional size measurement of cylindrical, circular tube, and curved tube parts in the mechanical field. It can use fixed fixtures and reversible fixtures to batch fix cylindrical, circular tube, curved tube / crankshaft and other parts, and can progressively feed materials to the bottom of the multi-degree-of-freedom measuring mechanism, which performs mobile measurement through the X-axis and Y-axis. The device has strong functionality and higher measurement efficiency. Summary of the invention

[0007] The object of the present invention is to provide a multifunctional measuring device for mechanical engineering to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional measuring device for mechanical engineering, the measuring device is used for standard and three-dimensional size measurement of cylindrical, circular tube and curved tube parts, the measuring device comprises a frame, a carrying mechanism and a multi-degree-of-freedom measuring mechanism, wherein the frame is a gantry frame, the carrying mechanism is installed on the bottom side of the frame, and the multi-degree-of-freedom measuring mechanism is arranged on the frame; the carrying mechanism comprises a carrying module and a fixture assembly, wherein the carrying module has a control panel, a side support rod, a transverse support rod, a first drive motor, a transmission belt, a mounting seat and a carrying plate, the side support rods are provided with two groups and are arranged in parallel on both sides of the bottom side of the frame, and the front and rear ends of the two groups of side support rods are connected by the transverse support rod.

[0009] Preferably, the first drive motor is installed on a side of the frame away from the control panel, a drive pulley is installed on the shaft end of the first drive motor, and a drive pulley linked to the drive pulley through a transmission belt is installed on the end of the horizontal support rod close to the control panel.

[0010] Preferably, the loading tray is provided with an upper and lower layer, a spring for buffering is provided between the upper and lower loading trays, the end of the lower loading tray is fixed on the transmission belt through a mounting seat, and the upper loading tray can be equipped with a plurality of clamp assemblies through a quick-release clamp, and the upper and lower loading trays can move back and forth with the transmission belt when the first drive motor is started and load the material to the bottom of the multi-degree-of-freedom measuring mechanism.

[0011] Preferably, the multi-degree-of-freedom measuring mechanism includes an X-axis mechanism, a Y-axis mechanism, and a measuring head, wherein the Y-axis mechanism includes a Y guide rod, a lead screw, a second drive motor, and a first slide, wherein the guide rod and the lead screw are provided in two groups and are arranged in parallel on both sides of the frame, each guide rod and lead screw is mounted with a first slide, and the bottom of the lead screw is driven by the second drive motor.

[0012] Preferably, the X-axis mechanism is vertically distributed on the rear side of the Y guide rod, and the X-axis mechanism includes an X-guide rod, an X-axis chain, a third drive motor and a second slide, wherein the X-guide rod is connected between the first slides on both sides, and an X-axis chain is arranged on the lower side of the X guide rod, one end of the X-axis chain is connected to the sprocket at the shaft end of the third drive motor, and the other end thereof is connected to the sprocket on the inner side of the first slide.

[0013] Preferably, a measuring unit is installed at the front end of the second slide, and the measuring unit is a three-dimensional measuring head based on contour measurement or a length measuring sensor or arc sensor based on size measurement.

[0014] Preferably, the fixture assembly includes a fixed fixture and a flip fixture, wherein the bottom sides of the fixed fixture and the flip fixture can be pre-installed on the loading plate through a quick-release chuck, and the fixed fixture includes a first track frame and a chuck, wherein the chuck can be slidably installed in the middle of the first track frame, and the chuck is a locking type clamp. The chuck can fix the cylinder and the round tube, and move back and forth with the transmission belt to load the material to the bottom of the multi-measuring head.

[0015] Preferably, the flip clamp includes a second track frame, a screw, a fourth drive motor and a flip clamp, wherein a screw is arranged in the middle of the inner side of the second track frame, the rear end of the screw is movably connected to the rear side of the second track frame, and the front end of the screw is connected to the fourth drive motor; the screw is provided with two threaded sections with opposite threads, and both threaded sections are provided with sliders, which can move along the middle of the second track frame, and the top of the slider extends out of the second track frame and is installed with the flip clamp.

[0016] Preferably, the flip clamp includes a guide wheel and a fifth drive motor, wherein the shaft end of the fifth drive motor is connected to at least two sets of guide wheels, and the guide wheels can be driven by the fifth drive motor to make the bent pipe part flip.

[0017] Preferably, an air bag for clamping the end of the bent pipe part is provided on the outer side of the guide wheel, and a micro air pump for controlling the inflation of the air bag to perform a clamping action is installed on the bottom side of the second track frame.

[0018] The specific process of measuring with the multifunctional measuring device is as follows:

[0019] According to the measured parts, the fixture assembly is selected through the quick-release fixture. The fixture assembly is divided into a fixed fixture and a reversible fixture. The fixed fixture is used to fix straight shafts, straight rods / tubes, and the reversible fixture is used to fix parts with irregular arcs, such as crankshafts, bent pipes, etc. After the fixture assembly (fixed fixture and reversible fixture) is pre-installed, the straight shafts, straight rods or crankshafts, and bent pipes are fixed on the fixed fixture and the reversible fixture respectively. After the fixing is completed, the system built into the control panel sends a specified signal to the first drive motor, and the first drive motor is used to fix the straight shafts, straight rods or crankshafts, and bent pipes. The driving motor drives the driving pulley and links the transmission pulley to move the transmission belt, which drives the fixture assembly and parts to the bottom of the multi-degree-of-freedom measuring mechanism for measurement. When measuring straight shaft and straight rod parts, the measuring unit measures the length of both ends of the parts based on the length measuring sensor. When measuring crankshafts and curved pipe parts, the measuring unit measures the three-dimensional contour and arc based on the arc sensor and the three-dimensional measuring head. During the measurement process, the measuring unit moves in the X-axis and Y-axis mechanisms to perform mobile measurement.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The measuring device of the present invention is used for the standard and three-dimensional size measurement of cylindrical, round tube, and bent tube parts in the mechanical field. It can use fixed fixtures and reversible fixtures to fix cylindrical, round tube, bent tube / crankshaft and other parts in batches, and can feed the materials progressively to the bottom of the multi-degree-of-freedom measuring mechanism, which can perform mobile measurement through the X-axis and Y-axis. The device has strong functionality.

[0022] 2. The upper loading plate of the present invention can be equipped with several groups of fixture assemblies through quick-release fixtures. The fixture assemblies can respectively fix multiple groups of round tubes and bent tube parts. During measurement, the parts or fixtures can be loaded on the loading plate in batches, making the measurement more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the structure of the object carrier plate of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a fixing fixture in an embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the reversible clamp of the present invention.

[0028] In the figure: 1, frame; 2, control panel; 3, side support rod; 4, horizontal support rod; 5, first drive motor; 6, transmission belt; 7, loading plate; 8, Y guide rod; 9, lead screw; 10, second drive motor; 11, first slide; 12, X guide rod; 13, X-axis chain belt; 14, third drive motor; 15, second slide; 16, measuring unit; 17, fixed fixture; 171, first track frame; 172, chuck; 18, reversible fixture; 181, second track frame; 182, fourth drive motor; 183, screw; 184, guide wheel; 185, fifth drive motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a multifunctional measuring device for mechanical engineering, the measuring device is used for standard and three-dimensional measurement of cylindrical, circular tube and curved tube parts, the measuring device comprises a frame 1, a carrying mechanism and a multi-degree-of-freedom measuring mechanism, wherein the frame 1 is a gantry frame, the carrying mechanism is installed on the bottom side of the frame 1, and the multi-degree-of-freedom measuring mechanism is arranged on the frame 1; the carrying mechanism comprises a carrying module and a fixture assembly, wherein the carrying module has a control panel 2, a side support rod 3, a transverse support rod 4, a first driving motor 5, a transmission belt 6, a mounting seat and a carrying plate 7, the side support rod 3 is provided with two groups and they are arranged in parallel on both sides of the bottom side of the frame 1, and the front and rear ends of the two groups of side support rods 3 are connected by the transverse support rod 4.

[0033] In this embodiment, the first drive motor 5 is installed on the side of the frame 1 away from the control panel 2, and a drive pulley is installed on the shaft end of the first drive motor 5. The end of the horizontal support rod 4 close to the control panel 2 is installed with a transmission belt 6 wheel that is linked to the drive pulley through a transmission belt 6.

[0034] In this embodiment, the loading tray 7 is provided with an upper and lower layer, a spring for buffering is provided between the upper and lower loading trays 7, the end of the lower loading tray 7 is fixed on the transmission belt 6 through a mounting seat, and the upper loading tray 7 can be equipped with a plurality of sets of clamp assemblies through a quick-release clamp, and the upper and lower loading trays 7 can move back and forth with the transmission belt 6 when the first drive motor 5 is started and load the material to the bottom of the multi-degree-of-freedom measuring mechanism.

[0035] In this embodiment, the multi-degree-of-freedom measuring mechanism includes an X-axis mechanism, a Y-axis mechanism, and a measuring head, wherein the Y-axis mechanism includes a Y guide rod 8, a lead screw 9, a second drive motor 10, and a first slide 11, wherein the guide rod and the lead screw 9 are provided in two groups and are arranged in parallel on both sides of the frame 1, each guide rod and the lead screw 9 is provided with a first slide 11, and the bottom of the lead screw 9 is driven by the second drive motor 10.

[0036] In this embodiment, the X-axis mechanism is vertically distributed on the rear side of the Y guide rod 8, and the X-axis mechanism includes an X-guide rod 12, an X-axis chain belt 13, a third drive motor 14 and a second slide 15, wherein the X-guide rod 12 is connected between the first slides 11 on both sides, and the X-axis chain belt 13 is arranged on the lower side of the X-guide rod 12, one end of the X-axis chain belt 13 is connected to the sprocket at the shaft end of the third drive motor 14, and the other end thereof is connected to the sprocket on the inner side of the first slide 11.

[0037] In this embodiment, a measuring unit 16 is installed at the front end of the second slide 15. The measuring unit 16 is a three-dimensional measuring head based on contour measurement or a length measuring sensor or arc sensor based on size measurement.

[0038] Example 2: Please refer to Figure 4 The present invention provides a technical solution: a multifunctional measuring device for mechanical engineering, the measuring device is used for standard and three-dimensional measurement of cylindrical, round tube and bent tube parts, the measuring device comprises a frame 1, a loading mechanism and a multi-degree-of-freedom measuring mechanism, wherein the frame 1 is a gantry frame, the loading mechanism is installed on the bottom side of the frame 1, and the multi-degree-of-freedom measuring mechanism is arranged on the frame 1; the loading mechanism comprises a loading module and a fixture assembly, in this embodiment, the fixture assembly comprises a fixed fixture 17, wherein the bottom side of the fixed fixture 17 can be pre-installed on the loading plate 7 through a quick-release chuck, the fixed fixture 17 comprises a first track frame 171 and a chuck 172, wherein the chuck 172 can be slidably installed in the middle of the first track frame 171, the chuck 172 is a locking clamp, the chuck 172 can fix the cylinder and the round tube, and move forward and backward with the transmission belt 6 to load the material to the bottom of the multi-measuring head.

[0039] Example 3: Please refer to Figure 5The present invention provides a technical solution: a multifunctional measuring device for mechanical engineering, the measuring device is used for standard and three-dimensional measurement of cylindrical, round tube and curved tube parts, the measuring device comprises a frame 1, a carrier mechanism and a multi-degree-of-freedom measuring mechanism, wherein the frame 1 is a gantry frame, the carrier mechanism is installed on the bottom side of the frame 1, and the multi-degree-of-freedom measuring mechanism is arranged on the frame 1; the carrier mechanism comprises a carrier module and a fixture assembly, in this embodiment, the fixture assembly comprises a reversible fixture 18, the bottom side of the reversible fixture 18 can be pre-installed on the carrier through a quick-release chuck On the disk 7, the flip clamp 18 includes a second track frame 181, a screw 183, a fourth drive motor 182 and a flip clamp, wherein a screw 183 is arranged in the middle of the inner side of the second track frame 181, the rear end of the screw 183 is movably connected to the rear side of the second track frame 181, and the front end of the screw 183 is connected to the fourth drive motor 182; the screw 183 is provided with two thread segments with opposite threads, and both thread segments are equipped with sliders, which can move along the middle of the second track frame 181, and the top of the slider extends out of the second track frame 181 and is installed with a flip clamp.

[0040] In this embodiment, the flip clamp includes a guide wheel 184 and a fifth drive motor 185, wherein the shaft end of the fifth drive motor 185 is connected to at least two sets of guide wheels 184, and the guide wheels 184 can be driven by the fifth drive motor 185 to flip the bent pipe part. An air bag (not shown in the figure) for clamping the end of the bent pipe part is arranged on the outside of the guide wheel 184, and a micro air pump for controlling the inflation of the air bag to perform a clamping action is installed on the bottom side of the second track frame 181.

[0041] The specific process of measuring with the multifunctional measuring device is as follows:

[0042] S1: Select the fixture assembly through the quick-release fixture according to the measured parts. The fixture assembly is divided into a fixed fixture 17 and a reversible fixture 18. The fixed fixture 17 is used to fix straight shafts, straight rods / tubes, and the reversible fixture 18 is used to fix parts with irregular arcs, such as crankshafts, bent pipes, etc.

[0043] S2: After the fixture assembly (fixed fixture 17 and reversible fixture 18) is pre-installed, the straight shaft, straight rod or crankshaft, and bent pipe parts are fixed on the fixed fixture 17 and the reversible fixture 18 respectively. After the fixing is completed, the system built into the control panel 2 sends a command to the first drive motor 5, and the first drive motor 5 drives the drive pulley and the transmission belt 6 wheel to move the transmission belt 6. The transmission belt 6 will drive the fixture assembly and the parts to the bottom of the multi-degree-of-freedom measurement mechanism for measurement;

[0044] S3: When measuring straight shaft and straight rod parts, the measuring unit 16 measures the length of both ends of the parts based on the length measuring sensor. When measuring crankshaft and curved pipe parts, the measuring unit 16 measures the three-dimensional contour and arc based on the arc sensor and the three-dimensional measuring head. During the measurement process, the measuring unit 16 moves in the X-axis and Y-axis directions based on the X-axis mechanism and the Y-axis mechanism to perform mobile measurement.

[0045] It is worth noting that the entire device is controlled by a general control system. Since the equipment matched with the control system is commonly used equipment and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0046] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0049] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional measuring device for mechanical engineering, characterized in that: The measuring device is used for measuring the standard and three-dimensional dimensions of cylindrical, round tube and bent tube parts, and comprises a frame (1), a loading mechanism and a multi-degree-of-freedom measuring mechanism, wherein the frame (1) is a gantry frame, the loading mechanism is installed on the bottom side of the frame (1), and the multi-degree-of-freedom measuring mechanism is arranged on the frame (1); the loading mechanism comprises a loading module and a fixture assembly, wherein the loading module has a control panel (2), a side support rod (3), a cross support rod (4), a first drive motor (5), a transmission belt (6 ), a mounting seat and a loading plate (7), two groups of side support rods (3) are provided and are arranged in parallel on both sides of the bottom side of the frame (1), and the front and rear ends of the two groups of side support rods (3) are connected by a transverse support rod (4); the first driving motor (5) is installed on the side of the frame (1) away from the control panel (2), and a driving pulley is installed on the shaft end of the first driving motor (5), and a transmission belt (6) wheel linked to the driving pulley through a transmission belt (6) is installed on the end of the transverse support rod (4) close to the control panel (2).

2. A multifunctional measuring device for mechanical engineering according to claim 1, characterized in that: The loading tray (7) is provided with an upper and a lower layer, a spring for buffering is provided between the upper and lower loading trays (7), an end of the lower loading tray (7) is fixed on the transmission belt (6) through a mounting seat, the upper loading tray (7) can be equipped with a plurality of groups of clamp assemblies through a quick-release clamp, and the upper and lower loading trays (7) can move forward and backward with the transmission belt (6) when the first drive motor (5) is started and load the material to the bottom of the multi-degree-of-freedom measuring mechanism.

3. A multifunctional measuring device for mechanical engineering according to claim 1, characterized in that: The multi-degree-of-freedom measuring mechanism comprises an X-axis mechanism, a Y-axis mechanism, and a measuring head, wherein the Y-axis mechanism comprises a Y guide rod (8), a lead screw (9), a second drive motor (10), and a first slide seat (11), wherein two groups of guide rods and lead screws (9) are provided and are arranged in parallel on both sides of a frame (1), each guide rod and lead screw (9) is provided with a first slide seat (11), and the bottom of the lead screw (9) is driven by the second drive motor (10).

4. A multifunctional measuring device for mechanical engineering according to claim 3, characterized in that: The X-axis mechanism is vertically distributed on the rear side of the Y guide rod (8), and the X-axis mechanism comprises an X-guide rod (12), an X-axis chain belt (13), a third drive motor (14) and a second slide seat (15), wherein the X-guide rod (12) is connected between the first slide seats (11) on both sides, and an X-axis chain belt (13) is arranged on the lower side of the X-guide rod (12), one end of the X-axis chain belt (13) is connected to the sprocket at the shaft end of the third drive motor (14), and the other end thereof is connected to the sprocket inside the first slide seat (11).

5. A multifunctional measuring device for mechanical engineering according to claim 4, characterized in that: A measuring unit (16) is installed at the front end of the second slide (15), and the measuring unit (16) is a three-dimensional measuring head based on contour measurement or a length measuring sensor or arc sensor based on dimension measurement.

6. A multifunctional measuring device for mechanical engineering according to claim 2, characterized in that: The clamp assembly comprises a fixed clamp (17) and a reversible clamp (18), wherein the bottom sides of the fixed clamp (17) and the reversible clamp (18) can be pre-installed on the loading plate (7) through a quick-release clamp, and the fixed clamp (17) comprises a first track frame (171) and a clamp (172), wherein the first track frame (171) can be slidably provided with a clamp (172), and the clamp (172) is a locking clamp, and the clamp (172) can fix a cylinder or a round tube, and move forward and backward with a transmission belt (6) to load the material to the position directly below the multi-measuring head.

7. A multifunctional measuring device for mechanical engineering according to claim 6, characterized in that: The flippable clamp (18) comprises a second track frame (181), a screw rod (183), a fourth drive motor (182) and a flip clamp, wherein the screw rod (183) is arranged in the middle of the inner side of the second track frame (181), the rear end of the screw rod (183) is movably connected to the rear side of the second track frame (181), and the front end of the screw rod (183) is connected to the fourth drive motor (182).

8. The multifunctional measuring device for mechanical engineering according to claim 7, characterized in that: The screw rod (183) is provided with two threaded sections in opposite directions, and both threaded sections are provided with sliders, which can move along the middle of the second track frame (181), and the top of the slider extends out of the second track frame (181) and is provided with a flip clamp.

9. A multifunctional measuring device for mechanical engineering according to claim 8, characterized in that: The flip clamp comprises a guide wheel (184) and a fifth drive motor (185), wherein the shaft end of the fifth drive motor (185) is connected to at least two groups of guide wheels (184), and the guide wheels (184) can be driven by the fifth drive motor (185) to make the bent pipe part flip.

10. A multifunctional measuring device for mechanical engineering according to claim 9, characterized in that: An air bag for clamping the end of the bent pipe part is arranged on the outer side of the guide wheel (184), and a micro air pump for controlling the inflation of the air bag to perform a clamping action is arranged on the bottom side of the second track frame (181).

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