Parameter measuring device for part with straight line curved surface structure

Abstract

The invention provides a parameter measuring device for a part with a straight line curved surface structure. The parameter measuring device comprises a supporting assembly, a fixing assembly, a connecting assembly, a sector plate and a detecting assembly. The fixing assembly comprises a base, an axial positioning and clamping assembly and a lateral positioning and clamping assembly. The connecting assembly comprises a first rotating shaft and a second rotating shaft; the first rotating shaft and the second rotating shaft are used for rotationally connecting the fixing assembly with the supporting assembly; the fan-shaped plate is fixedly connected with one end of the base and sleeves the first rotating shaft, and a plurality of measuring grooves are formed in the edge of the fan-shaped plate; the detection assembly comprises a third support, a fourth support and an auxiliary measuring tool. The third support and the fourth support are both provided with a plurality of measuring holes, and each measuring groove can be aligned with any one measuring hole. The parameter detection device designed by the invention is simple in operation method, high in detection benefit and suitable for detection of single parts and parts produced in batches; the problem of spatial curved surface detection of the special-shaped structural member is solved, the detection benefit is high, and the use efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of curved surface structure measurement, and in particular relates to a parameter measurement device for a part with a ruled curved surface structure. Background Art

[0002] An aviation equipment product part, such as Figure 1 As shown in the figure, the middle part is a shaft segment, and the two ends are irregular parts with ruled surface structures, and the two irregular parts are symmetrically arranged around the center of the shaft segment. The ruled surface structure of the irregular part is a torsion ruled surface, which is processed by a φ14 end mill with a 4-axis CNC machine tool according to the rotation angle and feed coordinate value. While the part rotates around the X-axis, the milling cutter feeds along the X-axis direction. The ruled surface structure has an important influence on the function of the part, and its rotation angle and feed coordinate value need to be detected.

[0003] At present, there is no detection method and equipment for the rotation angle and feed coordinate value of the ruled surface structure. Conventional inspection fixtures cannot detect the ruled surface structure, and three-coordinate measuring equipment cannot correctly detect and evaluate it. In addition, the part has a special-shaped structure, making it difficult to perform positioning detection. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that there is no dedicated detection device for ruled surface structures in the prior art, and to provide a parameter measurement device for parts with ruled surface structures.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A parameter measuring device for a part with a ruled surface structure, wherein the middle of the part is a shaft section, and the two end side parts of the shaft section are irregular parts with a ruled surface structure, and the two irregular parts are symmetrically arranged at the two ends of the shaft section; the two irregular parts respectively have circular holes that are parallel to the central axis of the shaft section but not colinear, and the parameter measuring device is used to clamp the part and detect the parameters of the ruled surface structure; the parameter measuring device comprises a supporting assembly, a fixing assembly, a connecting assembly, a fan-shaped plate and a detecting assembly; the supporting assembly comprises a base plate and a first support and a second support mounted on the base plate; the fixing assembly is located between the first support and the second support, and comprises a base for placing the part, an axial positioning clamping assembly for axially positioning and clamping the part, and a lateral positioning clamping assembly for lateral positioning and clamping the part, and the axial positioning clamping assembly and the lateral positioning clamping assembly are mounted on the base; the connecting assembly comprises a first rotating shaft and a second rotating shaft; the first rotating shaft is rotatably connected to the first support; the second rotating shaft is rotatably connected to the second support; the first rotating shaft and a second rotating shaft fixedly connected to one end of the base on the same side respectively, for rotatably connecting the fixed component and the supporting component; the sector plate is sleeved on the first rotating shaft, and three measuring grooves are provided on the edge of the sector plate; the detection component includes a third support, a fourth support, a feeler gauge, and at least three auxiliary measuring tools located on both sides of the fixed component, the auxiliary measuring tools include a positioning block and a measuring cylinder arranged on one side of the positioning block, and the position of each measuring cylinder on its positioning block along the central axis direction of the shaft section is different from each other; the third support and the fourth support are respectively mounted on the bottom plate, and the upper end of the third support and the upper end of the fourth support are respectively provided with guide holes for positioning the positioning block; a plurality of measuring holes are provided on the side wall of the third support close to the sector plate, and each measuring groove can be aligned with any measuring hole; the straight surface has at least three measuring surfaces, and a measuring surface is determined by inserting the first sample column into a measuring groove and a measuring hole, and the auxiliary measuring tool is selected to be inserted into the guide hole; the feeler gauge is used to obtain the gap between the measuring cylinder and the measuring surface.

[0007] Furthermore, a first base and a second base are provided at both ends of the base, the upper end of the first base is fixedly connected to the first rotating shaft, and the upper end of the second base is fixedly connected to the second rotating shaft.

[0008] Furthermore, the lateral positioning and clamping assembly includes a plurality of first hook-shaped pressure plates, a first threaded rod, a reference block, and a first knob; the plurality of reference blocks are respectively fixedly mounted on the side walls on both sides of the base so that the shaft section rests against the reference block on one side, thereby making the straight curved surface close to the detection assembly; the lower end of the first hook-shaped pressure plate is provided with a first threaded hole matching with the first threaded rod, and the middle part of the base is provided with a first fixing groove for installing the first hook-shaped pressure plate, and a first through hole, one end of the first threaded rod passes through the first through hole and the first threaded hole, and the other end of the first threaded rod is fixedly connected to the first knob, and the diameter of the first knob is larger than the diameter of the first through hole; the first knob is rotated so that the lower end of the first hook-shaped pressure plate can move in the first fixing groove, and the shaft section is clamped with the reference block through the upper end of the first hook-shaped pressure plate.

[0009] Furthermore, the lower end of the irregular part is provided with a fixing surface perpendicular to the shaft section; the first rotating shaft and the second rotating shaft both have a center hole; the axial positioning clamping assembly includes a second hook-shaped pressure plate, a second threaded rod, and two second sample columns; one end of the two second sample columns respectively passes through the center hole on the same side, extends into the circular hole, and makes the end face of one of the circular holes rest on the first base; the lower end of the second hook-shaped pressure plate is provided with a second threaded hole matching the second threaded rod; the second support is provided with an adjustment hole, the second base is provided with a second through hole, and the bottom plate is located on one side of the second base and is provided with a second fixing groove; one end of the second threaded rod passes through the adjustment hole, the second through hole and the second threaded hole in sequence, so that the lower end of the second hook-shaped pressure plate can move in the second fixing groove, and the upper end of the second hook-shaped pressure plate is tightened to the fixing surface of the irregular part; the middle part of the second threaded rod is provided with a circular ring close to the second fixing groove, and the diameter of the circular ring is larger than the diameter of the second through hole.

[0010] Furthermore, the first rotating shaft and the second rotating shaft are both perpendicular to the first support; the upper end of the first support is provided with a first mounting hole for installing the first rotating shaft; the upper end of the second support is provided with a second mounting hole for installing the second rotating shaft, and the center of the first mounting hole and the second mounting hole are coaxial.

[0011] Furthermore, a gap of 1 to 2 mm is reserved between the outer wall of the measuring cylinder and the initial measuring surface.

[0012] Furthermore, a pin hole is provided on the top surface of the guide hole for installing a first pin; a slide groove is provided on the top surface and the bottom surface of the measuring seat along the extension direction of the measuring column, and the slide groove cooperates with the first pin to limit the insertion direction of the auxiliary measuring tool in the guide hole.

[0013] Furthermore, the positions of the measuring cylinders of the plurality of auxiliary measuring tools are not set consistently, and the relative positions of the measuring cylinders and the slide grooves gradually decrease.

[0014] Furthermore, bearings are provided between the first rotating shaft and the first mounting hole, and between the second rotating shaft and the second mounting hole.

[0015] The advantages of the present invention are:

[0016] The parameter detection device designed by the present invention can position and tighten a part with a ruled surface structure by means of a fixed component, and can detect whether the ruled surface meets the processing requirements by setting a detection component and using an auxiliary measuring tool and a feeler gauge. The detection component and the fan-shaped plate cooperate to rotate the part, which is convenient for switching the detection position, so as to detect multiple processed surfaces of the ruled surface of the part, and finally evaluate whether the ruled surface meets the requirements as a whole. The parameter detection device has a simple operation method and high detection efficiency, and is suitable for the detection of single and batch-produced parts. It solves the problem of spatial surface detection of special-shaped structural parts, and has high detection efficiency and fast use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features and advantages of the present invention will become more readily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or minimized to show details of particular components:

[0018] Figure 1 It is a structural schematic diagram of the parts of the present invention;

[0019] Figure 2 is an assembly diagram of a part installed in a parameter measuring device according to an embodiment of the present invention;

[0020] Figure 3 is an assembly schematic diagram of an auxiliary measuring tool assembled on a fourth support in an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the three-dimensional structure of a parameter measuring device in an embodiment of the present invention;

[0022] Figure 5 is a side view of a parameter measuring device in an embodiment of the present invention;

[0023] Figure 6 is a top view of a parameter measuring device in an embodiment of the present invention;

[0024] Figure 7 yes Figure 5 The CC direction diagram in the figure;

[0025] Figure 8 is a schematic structural diagram of a sector plate in an embodiment of the present invention;

[0026] Fig. 9 is a schematic diagram of the positional relationship between the sector plate and the third support in an embodiment of the present invention;

[0027] Fig.10 is a schematic diagram of the positional relationship of the measuring holes on the third support in an embodiment of the present invention;

[0028] Fig.11 is a schematic diagram of the structure of the auxiliary measuring tool in an embodiment of the present invention;

[0029] Fig.12 is a schematic structural diagram of a bottom plate in an embodiment of the present invention;

[0030] Fig.13 is a schematic structural diagram of a second rotating shaft in an embodiment of the present invention;

[0031] Fig.14 is a schematic structural diagram of a first rotating shaft in an embodiment of the present invention;

[0032] Fig.15is a structural schematic diagram of a first base in an embodiment of the present invention;

[0033] Fig.16 is a schematic structural diagram of a first hook-shaped pressing plate in an embodiment of the present invention;

[0034] Fig.17 is a schematic structural diagram of a second hook-shaped pressing plate in an embodiment of the present invention;

[0035] Fig.18 is a schematic structural diagram of a first threaded rod in an embodiment of the present invention;

[0036] Fig.19 is a schematic structural diagram of a second threaded rod in an embodiment of the present invention;

[0037] Fig. 20 It is a schematic diagram of the structure of the second sample column in an embodiment of the present invention.

[0038] In the figure: 1-bottom plate; 2-first support; 3-bushing; 4-first hook-shaped pressure plate; 5-first bolt; 6-second hook-shaped pressure plate; 7-base; 8-second base; 9-second support; 10-second threaded rod; 11-fixing pin; 12-second knob; 13-second shaft; 14-second washer; 15-nut; 16-first baffle; 17-third support; 18-sector plate; 19-first base; 20-first positioning pin; 21-second bolt; 22-first bearing; 23-second bearing; 24-first rotating shaft; 25-first washer; 26-protective cover; 27-first screw; 28-third washer; 29-first sleeve; 30-second sleeve; 31-fourth support; 32-second baffle; 33-first latch; 34-second positioning pin; 35-second screw; 36-first threaded rod; 37-first knob; 38-second latch; 39-reference block; 40-second sample column; 41-auxiliary measuring tool. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration, and is not intended to limit the present invention.

[0040] A parameter measurement device for parts with ruled surface structures. Figure 1 As shown, the middle of the part with a ruled surface structure is a shaft section, and the side parts at both ends of the shaft section are irregular parts with a ruled surface structure, and the two irregular parts are symmetrically arranged at the two ends of the shaft section; the two irregular parts have through holes that are parallel to the central axis of the shaft section but not colinear, and the parameter measuring device is used to clamp the part and detect the parameters of the ruled surface structure.

[0041] The twisted ruled surface of the ruled surface structure is processed by a φ14 end mill in cooperation with a 4-axis CNC machine tool according to the rotation angle and feed coordinate value. While the part rotates around the X-axis, the end mill feeds along the X-axis direction.

[0042] Testing method: Select multiple measurement positions and measure them separately. If the measurements of at least three positions meet the requirements, it means that the ruled surface meets the requirements.

[0043] like Figure 2 As shown, the parameter measuring device includes a supporting component, a fixing component, a connecting component, a sector plate 18 and a detecting component.

[0044] like Figure 2 , 12 As shown, the support assembly includes a base plate 1 and a first support 2 and a second support 9 mounted on the base plate 1. The base plate 1 is a mounting seat for the parameter measuring device, and the middle part is hollowed out to reduce weight; the lower ends of the first support 2 and the second support 9 are fixedly connected to the base plate 1 by second bolts 21 respectively.

[0045] like Figure 5 , 6 As shown, the fixing assembly is located between the first support 2 and the second support 9, and includes a base 7 for placing parts, an axial positioning clamping assembly for axially positioning and clamping the parts, and a lateral positioning clamping assembly for lateral positioning and clamping the parts, and the axial positioning clamping assembly and the lateral positioning clamping assembly are installed on the base 7. Among them, the base 7 is a mounting seat for the parts.

[0046] like Figure 6 , 7 As shown in Figures 13 and 14, the connecting assembly includes a first rotating shaft 24 and a second rotating shaft 13; the first rotating shaft 24 is rotatably connected to the first support 2; the second rotating shaft 13 is rotatably connected to the second support 9; the first rotating shaft 24 and the second rotating shaft 13 are respectively fixedly connected to one end of the base 7 on the same side, so as to rotatably connect the fixing assembly to the supporting assembly. During assembly, it is necessary to ensure that the bottom plate 1 can flexibly rotate relative to the supporting assembly.

[0047] like Figure 4 , 8 As shown, the sector plate 18 is sleeved on the first rotating shaft 24, and three measuring grooves are provided on the edge of the sector plate 18. The sector plate 18 is positioned by the first positioning pin 20, and is detachably mounted on one end of the base 7 by the first bolt 5, and is locked by the second washer 14 and the nut 15.

[0048] like Figure 2 , 9As shown in Figures 1 and 11, the detection assembly includes a third support 17, a fourth support 31, a feeler gauge, and an auxiliary measuring tool 41 located on both sides of the fixed assembly. The auxiliary measuring tool 41 includes a positioning block and a measuring cylinder arranged on one side of the positioning block. The positions of each measuring cylinder on its positioning block along the central axis direction of the shaft section are different from each other; the third support 17 and the fourth support 31 are respectively mounted on the bottom plate 1, and the upper ends of the third support 17 and the fourth support 31 are respectively provided with guide holes for positioning the positioning blocks, so that the measuring part of the auxiliary measuring tool 41 is located on the ruled surface and cooperates with the feeler gauge for measurement. The third support 17 and the fourth support 31 are both "H"-shaped structures, which are mounting seats for the auxiliary measuring tool 41 to be inserted, and are used to locate and fix the rotation angle of the parts.

[0049] like Fig. 9 , 10 As shown, three measuring holes are provided on the side wall of the third support 17 near the fan-shaped plate 18. Each measuring slot can be aligned with any measuring hole. A measuring slot and a measuring hole are inserted through the first sample column, and the corresponding auxiliary measuring tool 41 is selected to be inserted into the guide hole; the feeler gauge is used to obtain the gap between the measuring cylinder and the measuring surface. By combining and arranging three measuring holes and three measuring slots, the ruled surface at nine positions can be measured. The corresponding angles are engraved around the measuring slots and the measuring holes for quick adjustment. Bushings 3 can also be installed in the measuring holes for the convenience of subsequent size adjustment.

[0050] The part is positioned on the fixed seat by the axial positioning clamping assembly and the lateral positioning clamping assembly. The parameters of the ruled surface at the first end of the part are first measured.

[0051] Since the measuring groove corresponds to the measuring hole, the rotation angle of the sector plate 18 can be adjusted to place the part in different measuring positions. The rotation angle of the sector plate 18 is designed according to the rotation angle during part processing, and the positions of the measuring cylinders of the multiple auxiliary measuring tools 41 are designed according to the feed coordinate values ​​during part processing. The rotation angle of the sector plate 18 in coordination with the third support matches the positions of the measuring cylinders of the multiple auxiliary measuring tools 41.

[0052] The present application embodiment is exemplified by three detection positions: Figure 2 , 9 As shown, at the first measuring position, align the second measuring groove of the sector plate 18 with the second measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the first auxiliary measuring tool 41 and insert it into the guide hole, and use a feeler gauge to detect the first gap value A1 between the measuring cylinder and the measuring surface;

[0053] At the second detection position, align the first measuring groove of the sector plate 18 with the first measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the second auxiliary measuring tool 41 and insert it into the guide hole, and use a feeler gauge to detect the second gap value A2 between the measuring cylinder and the measuring surface;

[0054] At the third detection position, align the third measuring groove of the sector plate 18 with the second measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the third auxiliary measuring tool 41 and insert it into the guide hole, and use a feeler gauge to detect the third gap value A3 between the measuring cylinder and the measuring surface;

[0055] When A1, A2, and A3 meet the clearance requirements at the same time, the ruled surface at the first end meets the requirements. When measuring the ruled surface at the second end, turn the part over and then measure it according to the measurement method of the ruled surface at the first end. The same method can be used to detect whether the ruled surface at the second end of the part meets the requirements, specifically:

[0056] like Figure 3 , 9 As shown, when in the first measuring position, align the second measuring groove of the sector plate 18 with the second measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the first auxiliary measuring tool 41 and insert it into the guide hole, and use the feeler gauge to detect the first gap value B1 between the measuring cylinder and the measuring surface;

[0057] At the second detection position, align the third measuring groove of the sector plate 18 with the third measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the second auxiliary measuring tool 41 and insert it into the guide hole, and use the feeler gauge to detect the second gap value B2 between the measuring cylinder and the measuring surface;

[0058] At the third detection position, align the first measuring groove of the sector plate 18 with the second measuring hole, and insert the first cylindrical screw into the measuring groove and the measuring hole at the same time, select the third auxiliary measuring tool 41 and insert it into the guide hole, and use the feeler gauge to detect the third gap value B3 between the measuring cylinder and the measuring surface;

[0059] When B1, B2, and B3 meet the clearance requirements at the same time, the ruled surface at the second end meets the requirements. Both ruled surfaces of the part are tested. If both ruled surfaces meet the requirements, the part is qualified.

[0060] In other embodiments, additional detection positions can be added according to detection requirements. The measurement method of multiple detection positions is the same as the above method. It only needs to be converted and the auxiliary measuring tool 41 with a corresponding rotation angle of the part is selected for measurement.

[0061] The parameter measuring device provided in this embodiment is specially used for detecting parts with a torsion ruled surface structure. According to its processing principle, the auxiliary measuring tool 41 and the feeler gauge are used to detect whether the ruled surface processed by the part meets the requirements.

[0062] like Figure 7 , 15 As shown, a first base 19 and a second base 8 are provided at both ends of the base 7. The upper end of the first base 19 is fixedly connected to the first rotating shaft 24, and the upper end of the second base 8 is fixedly connected to the second rotating shaft 13. The first base 19 and the second base 8 are both arranged parallel to the first support 2; Fig.12 , 13 As shown, one end of the first rotating shaft 24 and one end of the second rotating shaft 13 are both provided with external threads, the upper end of the first base 19 is fixedly connected to the first rotating shaft 24 by threads, and the lower end is fixedly connected to one end of the base 7; the upper end of the second base 8 is fixedly connected to the second rotating shaft 13 by threads, and the lower end is fixedly connected to the other end of the base 7; the U-shaped combination formed by the first base 19, the second base 8 and the base 7 is roughly similar to the structure of the parts, which is convenient for the fixed installation of the parts.

[0063] like Figure 4 , 5 As shown in FIGS. 6 and 16 , the lateral positioning clamping assembly includes two first hook-shaped pressure plates 4 , a first threaded rod 36 , a reference block 39 , and a first knob 37 .

[0064] like Figure 6 As shown, there are four reference blocks 39, which are fixedly mounted on the side walls of the base 7 in pairs, so that the shaft section rests on the reference block 39 on one side, thereby making the ruled curved surface close to the detection component.

[0065] like Figure 4 , 6 As shown in FIGS. 16 and 18, the first hook-shaped pressing plate 4, the first threaded rod 36 and the first knob 37 are each provided with two. The lower end of the first hook-shaped pressing plate 4 is provided with a first threaded hole matched with the first threaded rod 36. Fig.13 As shown, two first fixing grooves for installing two first hook-shaped pressure plates 4 and two first through holes are provided in the middle of the base 7. One end of the first threaded rod 36 passes through the first through hole and the first threaded hole, and the other end of the first threaded rod 36 is fixedly connected to the first knob 37. The diameter of the first knob 37 is larger than the diameter of the first through hole. The first knob 37 is rotated to allow the lower end of the first hook-shaped pressure plate 4 to move in the first fixing groove, and the shaft section is clamped with the reference block 39 through the upper end of the first hook-shaped pressure plate 4.

[0066] In this embodiment, the first knob 37 is fixedly connected to the first threaded rod 36 through the second latch 38. When the first knob 37 is rotated, the first threaded rod 36 also rotates accordingly, keeping the upper end of the first hook-shaped pressing plate 4 on the first threaded rod 36 always in a vertical state, controlling the first hook-shaped pressing plate 4 not to rotate along with the first threaded rod 36, so that the first hook-shaped pressing plate 4 gradually approaches the shaft section of the part in the first fixing groove, cooperates with the reference block 39 on the same side, fixes and clamps the part, and measures the ruled surface on one side of the part. When measuring the ruled surface on the other side of the part, the first knob 37 on the other side is used to rotate the first threaded rod 36 on the same side, so that the part abuts against the reference block 39 on the other side, and is fixed and locked by the hook-shaped pressing plate on the other side.

[0067] like Figure 1 , 2 As shown, the lower end of the irregular portion is provided with a fixing surface perpendicular to the shaft section; the first rotating shaft 24 and the second rotating shaft 13 both have a central hole.

[0068] like Figure 5 , 7 As shown in , 17, 19, and 20, the axial positioning clamping assembly includes a second hook-shaped pressing plate 6, a second threaded rod 10, and two second sample columns 40; one end of the two second sample columns 40 respectively passes through the center hole on the same side and extends into the circular hole, and the end face of one of the circular holes is against the first base 19; the lower end of the second hook-shaped pressing plate 6 is provided with a second threaded hole that matches the second threaded rod 10; the second support 9 is provided with an adjustment hole, the second base 8 is provided with a second through hole, and the bottom plate 1 is located on one side of the second base 8 and is provided with a second fixing groove; one end of the second threaded rod 10 passes through the adjustment hole, the second through hole, and the second threaded hole in sequence, so that the lower end of the second hook-shaped pressing plate 6 can move in the second fixing groove, and the upper end of the second hook-shaped pressing plate 6 is pressed against the fixing surface of the irregular part; the middle part of the second threaded rod 10 is provided with a circular ring near the second fixing groove, and the diameter of the circular ring is greater than the diameter of the second through hole. Among them, the other end of the second threaded rod 10 is fixedly installed with a second knob 12 through a fixing pin 11 for rotating the second threaded rod 10.

[0069] Among them, the first support 2 and the second support 9 are both equipped with a protective cover 26 for protecting the first bearing 22 and the second bearing 23, a third gasket 28 is installed, and it is locked with a first screw 27, and the protective cover 26 is provided with a through hole for the second sample column 40 to pass through.

[0070] In this embodiment, the circular hole of the part is first aligned with the central hole of the first rotating shaft 24 and the second rotating shaft 13 through two second sample columns 40, and fixed in the axial direction; one end of the part is against the first base 19, and the part is fixed and locked in the axial direction through the second hook-shaped pressing plate 6. A circular ring is provided in the middle of the second threaded rod 10 to limit the second threaded rod 10 to only rotate in the circumferential direction but not to move in the axial direction. When the second threaded rod 10 rotates, it drives the second hook-shaped pressing plate 6 to move in the second fixing groove and lock the part.

[0071] like Figure 4 , 7 As shown, the first rotating shaft 24 and the second rotating shaft 13 are both perpendicular to the first support 2; the upper end of the first support 2 is provided with a first mounting hole for mounting the first rotating shaft 24; the upper end of the second support 9 is provided with a second mounting hole for mounting the second rotating shaft 13, and the center of the first mounting hole is coaxial with the center of the second mounting hole.

[0072] like Fig.11 As shown, the auxiliary measuring tool 41 includes a measuring column and a fixing seat; the fixing seat is placed in the guide hole so that a gap of 1 to 2 mm is reserved between the outer wall of the measuring column and the straight curved surface at the initial position. One end of the fixing seat is also provided with anti-slip teeth for easy picking and fixing.

[0073] like Figure 6 As shown, the top surface of the guide hole is provided with a pin hole for installing the first plug 33; the top surface and the bottom surface of the measuring seat are provided with a slide groove along the extension direction of the measuring column, and the slide groove cooperates with the first plug 33 to limit the insertion direction of the auxiliary measuring tool 41 in the guide hole. Among them, the guide hole on the third support 17 is composed of the guide groove on the third support 17 and the first baffle 16 installed on the top surface of the guide groove; the guide hole on the fourth support 31 is composed of the guide groove on the fourth support 31 and the second baffle 32 installed on the top surface of the guide groove; the first baffle 16 on the third support 17 and the second baffle 32 on the fourth support 31 are both positioned by the second positioning pin 34 and locked by the second screw 35.

[0074] In this embodiment, the auxiliary measuring tool 41 is designed based on the feed coordinate value during ruled surface processing and has multiple specifications. The position setting of the measuring cylinder of each specification of the auxiliary measuring tool 41 is inconsistent, and the relative position of the measuring cylinder and the slide groove gradually decreases.

[0075] like Figure 7 As shown, two bearings are provided between the first rotating shaft 24 and the first mounting hole, and between the second rotating shaft 13 and the second mounting hole, namely the first bearing 22 and the second bearing 23, and are locked by the first washer 25 and the nut 15. A first sleeve 29 and a second sleeve 30 are installed between the first bearing 22 and the second bearing 23, and the first sleeve 29 is sleeved on the outside of the second sleeve 30.

[0076] The specific steps for assembling the parameter measurement device are as follows:

[0077] 1. Install the second hook-shaped pressing plate 6 into the second fixing groove of the base 7, and screw the second screw into the second threaded hole of the second hook-shaped pressing plate 6; install the first base 19 and the second base 8 on the base 7, position them with the first positioning pin 20, and tighten them with the first bolt 5.

[0078] 2. Install the reference block 39 on both sides of the base 7, position it with the first positioning pin 20, and tighten it with the first bolt 5.

[0079] 3. Install the first hook-shaped pressing plate 4 into the first fixing groove of the base 7 , screw the first screw into the first threaded hole of the first hook-shaped pressing plate 4 , install the first knob 37 at one end of the first threaded rod 36 , and fix it with the second latch 38 .

[0080] 4. Install the sector plate 18 on the side of the first base 19 at an angle, position it with the first positioning pin 20, and tighten it with the first bolt 5.

[0081] 5. Install the first bearing 22, the second bearing 23, the first sleeve 29, and the second sleeve 30 on the first rotating shaft 24 and the second rotating shaft 13 respectively, put in the first washer 25, and fasten with the nut 15.

[0082] 6. Install the assembled first rotating shaft 24 and the second rotating shaft 13 into the bearing mounting holes of the first support 2 and the second support 9 respectively, and then install the first washer 25 and the protective cover 26 respectively.

[0083] 7. The assembled first support 2 and the second support 9 are on the base plate 1. The assembled base 7 is installed on the first support 2 and the second support 9, and locked with the second washer 14 and the nut 15. The center, coaxiality and spacing of the first support 2 and the second support 9 are adjusted to ensure that the base 7 can rotate flexibly. Position it with a pin, and use the second bolt 21 to fasten the first support 2 and the second support 9 to the base plate 1.

[0084] 8. Install the second knob 12 to one end of the second screw rod and fasten it with the fixing pin 11.

[0085] 9. Install the bushing 3 into the measuring hole, and then install the third support 17 and the fourth support 31 on the base plate 1 according to the size requirements, position them with the first positioning pin 20, and tighten them with the second bolt 21.

[0086] 10. Install the first baffle 16 on the third support 17 , position it with the second positioning pin 34 , tighten it with the second screw 35 , and install the first latch 33 in the pin hole of the first baffle 16 .

[0087] 11. Install the second baffle 32 on the fourth support 31, position it with the second positioning pin 34, tighten it with the second screw 35, and install the first plug 33 in the pin hole of the second baffle 32. The parameter detection device designed in this embodiment can fix the parts with ruled surface structure by setting the fixing component, and can detect whether the ruled surface meets the processing requirements by setting the detection component and using the auxiliary measuring tool 41 and the feeler gauge. The detection component and the fan-shaped plate 18 can rotate the part, detect multiple processing surfaces of the ruled surface of the part, and finally evaluate whether the overall requirements are met; this parameter detection device has a simple operation method and high detection efficiency, and is suitable for the detection of single and batch-produced parts; it solves the problem of spatial surface detection of special-shaped structural parts, and has high detection efficiency. It only takes 5 minutes to detect a part using the present invention.

[0088] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or substituted for the corresponding features in other implementations. The technical solutions obtained by these combinations or substitutions shall also be deemed to be included in the protection scope of the present invention.

Claims

1. A parameter measuring device for a part with a ruled surface structure, wherein the middle of the part is a shaft section, and the two ends of the shaft section are irregular parts with a ruled surface structure, and the two irregular parts are symmetrically arranged at the two ends of the shaft section; the two irregular parts respectively have circular holes parallel to the central axis of the shaft section but not colinear, and the parameter measuring device is used to clamp the part and detect the parameters of the ruled surface structure; characterized in that, The parameter measuring device comprises: A support assembly comprising a base plate (1) and a first support (2) and a second support (9) mounted on the base plate (1); a fixing assembly, located between the first support (2) and the second support (9), comprising a base (7) for placing the part, an axial positioning clamping assembly for axially positioning and clamping the part, and a lateral positioning clamping assembly for lateral positioning and clamping the part, wherein the axial positioning clamping assembly and the lateral positioning clamping assembly are mounted on the base (7); The connecting assembly comprises a first rotating shaft (24) and a second rotating shaft (13); the first rotating shaft (24) is rotatably connected to the first support (2); the second rotating shaft (13) is rotatably connected to the second support (9); the first rotating shaft (24) and the second rotating shaft (13) are respectively fixedly connected to one end of the base (7) on the same side, so as to enable the fixing assembly to be rotatably connected to the supporting assembly; A sector plate (18) is sleeved on the first rotating shaft (24), and three measuring grooves are arranged on the edge of the sector plate (18); A detection assembly, comprising a third support (17), a fourth support (31), a feeler gauge and at least three auxiliary measuring tools (41) located on both sides of the fixing assembly, wherein the auxiliary measuring tool (41) comprises a positioning block and a measuring cylinder arranged on a side surface of the positioning block, and each measuring cylinder has a different position on its positioning block along the central axis direction of the shaft segment; the third support (17) and the fourth support (31) are respectively mounted on the bottom plate (1), and the upper ends of the third support (17) and the fourth support (31) are respectively provided with guide holes for positioning the positioning block; A plurality of measuring holes are provided on the side wall of the third support (17) close to the fan-shaped plate (18), and each of the measuring grooves can be aligned with any one of the measuring holes; The ruled surface has at least three measuring surfaces. A measuring surface is determined by inserting a first sample cylinder into a measuring groove and a measuring hole, and a corresponding auxiliary measuring tool (41) is selected to be inserted into the guide hole; a feeler gauge is used to obtain the gap between the measuring cylinder and the measuring surface.

2. The parameter measuring device according to claim 1, characterized in that: A first base (19) and a second base (8) are provided at both ends of the base (7); the upper end of the first base (19) is fixedly connected to the first rotating shaft (24), and the upper end of the second base (8) is fixedly connected to the second rotating shaft (13).

3. The parameter measuring device according to claim 2, characterized in that: The lateral positioning clamping assembly comprises a plurality of first hook-shaped pressing plates (4), a first threaded rod (36), a reference block (39), and a first knob (37); A plurality of reference blocks (39) are respectively fixedly mounted on the side walls of both sides of the base (7), so that the shaft section abuts against the reference block (39) on one side, thereby making the ruled curved surface close to the detection component; The lower end of the first hook-shaped pressure plate (4) is provided with a first threaded hole cooperating with the first threaded rod (36), and the middle part of the base (7) is provided with a first fixing groove for installing the first hook-shaped pressure plate (4), and a first through hole, one end of the first threaded rod (36) passes through the first through hole and the first threaded hole, and the other end of the first threaded rod (36) is fixedly connected to the first knob (37), and the diameter of the first knob (37) is larger than the diameter of the first through hole; the first knob (37) is rotated to enable the lower end of the first hook-shaped pressure plate (4) to move in the first fixing groove, and the shaft section is clamped by the upper end of the first hook-shaped pressure plate (4) and the reference block (39).

4. The parameter measuring device according to claim 2, characterized in that: The lower end of the irregular portion is provided with a fixing surface perpendicular to the shaft section; the first rotating shaft (24) and the second rotating shaft (13) both have a central hole; The axial positioning clamping assembly comprises a second hook-shaped pressing plate (6), a second threaded rod (10), and two second sample columns (40); One end of the two second sample columns (40) respectively passes through the central hole on the same side and extends into the circular hole, and the end surface of one of the circular holes is against the first base (19); The lower end of the second hook-shaped pressing plate (6) is provided with a second threaded hole matched with the second threaded rod (10); the second support (9) is provided with an adjustment hole, the second base (8) is provided with a second through hole, and the bottom plate (1) is located on one side of the second base (8) and is provided with a second fixing groove; one end of the second threaded rod (10) passes through the adjustment hole, the second through hole and the second threaded hole in sequence, so that the lower end of the second hook-shaped pressing plate (6) can move in the second fixing groove and press against the fixing surface of the irregular part through the upper end of the second hook-shaped pressing plate (6); A circular ring is provided at a middle portion of the second threaded rod (10) close to the second fixing groove, and the diameter of the circular ring is greater than the diameter of the second through hole.

5. The parameter measuring device according to claim 1, characterized in that: The first rotating shaft (24) and the second rotating shaft (13) are both perpendicular to the first support (2); a first mounting hole for mounting the first rotating shaft (24) is provided at the upper end of the first support (2); a second mounting hole for mounting the second rotating shaft (13) is provided at the upper end of the second support (9), and the centers of the first mounting holes and the second mounting holes are coaxial.

6. The parameter measuring device according to claim 1, characterized in that: A gap of 1 to 2 mm is reserved between the outer wall of the measuring cylinder and the initial measuring surface.

7. The parameter measuring device according to claim 6, characterized in that: The top surface of the guide hole is provided with a pin hole for installing a first latch pin (33); The top surface and the bottom surface of the measuring seat are both provided with sliding grooves along the extension direction of the measuring column, and the sliding grooves cooperate with the first latch (33) to limit the insertion direction of the auxiliary measuring tool (41) in the guide hole.

8. The parameter measuring device according to claim 7, characterized in that: The positions of the measuring cylinders of the plurality of auxiliary measuring tools (41) are arranged inconsistently, and the relative positions of the measuring cylinders and the slide grooves gradually decrease.

9. The parameter measuring device according to claim 5, characterized in that: Bearings are provided between the first rotating shaft (24) and the first mounting hole, and between the second rotating shaft (13) and the second mounting hole.

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