Crankshaft blank alignment system and alignment method thereof

Abstract

The invention discloses a crankshaft blank alignment system and an alignment method thereof, and relates to the technical field of measuring devices. The alignment system comprises two chuck devices, a supporting seat and a height measuring device, the two chuck devices are opposite and spaced, each chuck device comprises a fixed disc, a rotating disc and a chuck mechanism, the rotating disc is rotatably arranged on the fixed disc, the chuck mechanism is arranged on the rotating disc, the chuck mechanism can move in the radial direction of the rotating disc, and the height measuring device is arranged on the supporting seat. And the chuck mechanism can move along the arrangement direction of the two chuck devices. The alignment system can clamp two end shafts of a crankshaft blank to chuck mechanisms of two chuck devices respectively, and a height measuring device can be used for measuring the height of the median line of each main journal and the height of the median line of each connecting rod journal, so that the height difference of the median line of each main journal and the height difference of the median line of each connecting rod journal meet a preset difference value; therefore, the theoretical generatrix height of the crankshaft blank can be found to prepare for finish machining of the crankshaft blank, the yield of the crankshaft can be increased, and the cost of manufacturing the crankshaft is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of measuring devices, and in particular to an alignment system and an alignment method for a crankshaft blank. Background Art

[0002] In the related technology, the crankshaft is an important component of the engine, and the manufacturing precision of the crankshaft is very high. The crankshaft blank often has uneven allowance, V-shaped bending or S-shaped bending, and it is difficult to find the theoretical generatrix of the crankshaft blank, which will lead to insufficient subsequent processing allowance, reduce the yield rate, and lead to higher costs. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an alignment system for a crankshaft blank, which can find the theoretical generatrix of the crankshaft blank.

[0004] The invention further proposes an alignment method for an alignment system of a crankshaft blank.

[0005] According to an embodiment of the present invention, the crankshaft blank alignment system includes: two chuck devices, the two chuck devices are opposite and spaced apart, the chuck devices include a fixed disk, a rotating disk and a chuck mechanism, the rotating disk is rotatably arranged on the fixed disk and is located on the side of the fixed disk facing the other chuck device, the chuck mechanism is arranged on the rotating disk and is located on the side of the rotating disk facing the other chuck device, the chuck mechanism is movable in the radial direction of the rotating disk, and the chuck mechanism is movable along the arrangement direction of the two chuck devices; a support seat, the support seat is located between the two chuck devices, the support seat is used to support the main journal of the crankshaft blank; a height measuring device, the height measuring device is used to measure the height of the connecting rod journal and the main journal of the crankshaft blank.

[0006] According to the crankshaft blank alignment system of the embodiment of the present invention, the alignment system can clamp the two end shafts of the crankshaft blank on the chuck mechanisms of the two chuck devices respectively, and can use a height measuring device to measure the centerline heights of each main journal and each connecting rod journal, so that the centerline height difference of each main journal and the centerline height difference of each connecting rod journal meet the preset difference, and then the theoretical generatrix height of the crankshaft blank can be found, and holes can be drilled in the end shafts of the crankshaft blank to prepare for the fine machining of the crankshaft blank, which can improve the yield rate of the crankshaft and reduce the cost of manufacturing the crankshaft.

[0007] In some embodiments of the present invention, the chuck mechanism includes: a mounting disk and a plurality of clamping blocks, the mounting disk is arranged on the rotating disk, the plurality of clamping blocks are arranged on the mounting disk and are located on the side of the mounting disk away from the rotating disk, the plurality of clamping blocks are evenly arranged along the circumference of the mounting disk, and the plurality of clamping blocks selectively move along the radial direction of the mounting disk to clamp or loosen the crankshaft blank.

[0008] In some embodiments of the present invention, the inner end surface of the block is configured as an arc-shaped surface.

[0009] In some embodiments of the present invention, the alignment system also includes: a plurality of damping telescopic rods, both ends of the damping telescopic rods have connecting ball heads, a mounting groove is formed on the side of the rotating disk facing the mounting disk, a plurality of first spherical grooves are formed on the side wall of the mounting groove, and the plurality of first spherical grooves are arranged in sequence along the circumference of the rotating disk, a plurality of second spherical grooves are formed on the peripheral wall of the mounting disk, and the plurality of second spherical grooves are arranged in sequence along the circumference of the mounting disk, the mounting disk is assembled in the mounting groove, the plurality of damping telescopic rods are located between the mounting disk and the side walls of the mounting groove and are arranged around the mounting disk, and the connecting ball heads at both ends of the damping telescopic rods are respectively installed in the corresponding first spherical grooves and the corresponding second spherical grooves.

[0010] In some embodiments of the present invention, the damping telescopic rod also has a first rod sleeve, a second rod sleeve, a limit piece and a telescopic rod, one end of the first rod sleeve is fixedly connected to the second rod sleeve, the other end of the first rod sleeve is fixedly provided with a connecting ball head, the limit piece is located in the first rod sleeve and is movable along the length direction of the first rod sleeve, the telescopic rod is inserted into the second rod sleeve and one end extends into the first rod sleeve, and the end of the telescopic rod extending into the first rod sleeve is fixedly connected to the limit piece, and the other end of the telescopic rod is fixedly provided with a connecting ball head.

[0011] In some embodiments of the present invention, a plurality of the damping telescopic rods are uniformly arranged in sequence along the circumference of the mounting plate.

[0012] In some embodiments of the present invention, the alignment system also includes: an electric drill rod, the mounting disk is formed with a first through hole, the rotating disk is formed with a second through hole, the fixed disk is formed with a third through hole, the first through hole, the second through hole and the third through hole are relatively arranged, a plurality of the blocks are arranged around the first through hole, the electric drill rod is suitable for being assembled in the first through hole, and the electric drill rod is used to drill holes at both ends of the crankshaft blank.

[0013] In some embodiments of the present invention, the alignment system also includes: a connecting sleeve, which is fixed to the first through hole, and the connecting sleeve forms a fourth through hole, the inner wall of the fourth through hole forms a first circumferential limit portion, the outer wall of the electric drill rod forms a second circumferential limit portion, the electric drill rod is passed through the fourth through hole, and the first circumferential limit portion and the second circumferential limit portion are matched in a limiting manner.

[0014] In some embodiments of the present invention, a central axis of the first through hole, a central axis of the second through hole, a central axis of the third through hole, and a central axis of the fourth through hole are collinear.

[0015] In some embodiments of the present invention, the outer peripheral wall of the fixed disk is formed with angle scale lines, and the angle scale lines are arranged along the circumference of the rotating disk.

[0016] In some embodiments of the present invention, the support seat includes: a support seat body, a first support plate and a second support plate, the first support plate and the second support plate are respectively used to support different main journals of the crankshaft blank, the first support plate and the second support plate are opposite to and spaced apart, and the first support plate and the second support plate can be lifted and lowered on the support seat body.

[0017] In some embodiments of the present invention, the support seat body includes: a support base plate, a first plate body and a second plate body, the support base plate has a first side and a second side relative to each other, the first plate body and the second plate body are both fixedly arranged on the upper surface of the support base plate, the first plate body and the second plate body are relative and spaced apart along the arrangement direction of the first support plate and the second support plate, from the bottom to the top of the support seat body, the first plate body is inclined toward the first side, and the second plate body is inclined toward the second side, the first support plate is slidably arranged on the surface of the first plate body facing the second side, and the second support plate is slidably arranged on the surface of the second plate body facing the first side.

[0018] In some embodiments of the present invention, the alignment system further includes: a plurality of lifting drive mechanisms, wherein the plurality of lifting drive mechanisms are all disposed on the support seat body, and the plurality of lifting drive mechanisms are respectively transmission-connected to the first support plate and the second support plate.

[0019] In some embodiments of the present invention, the height measuring device includes: a fixed seat, a measuring rod and a measuring cursor, the measuring rod is fixed to the fixed seat and extends in a vertical direction, the measuring rod has height scale lines, the height scale lines are arranged along the height direction of the measuring rod, and the measuring cursor is movably provided on the measuring rod along the height direction of the measuring rod.

[0020] According to the alignment method of the crankshaft blank according to the embodiment of the present invention, the alignment system is the above-mentioned alignment system, and the alignment method comprises: clamping the two ends of the crankshaft blank on the chuck mechanisms of the two chuck devices respectively, using the height measuring device to measure and obtain the median height of the two main journals located at the outermost ends, so as to determine the first height difference between the two median lines of the two main journals at the outermost ends, adjusting the position of one chuck mechanism according to the first height difference so that the first height difference satisfies the preset difference value to determine the theoretical generatrix height of the crankshaft blank; rotating the rotating device The movable plate is used to rotate part of the connecting rod journal of the crankshaft blank to the uppermost position, and the height measuring device is used to measure and obtain the height of the first connecting rod center line of the part of the connecting rod journal to determine the second height difference between the first connecting rod center line and the theoretical generatrix, and the position of one of the chuck mechanisms is adjusted according to the second height difference so that the second height difference meets the preset difference value; the height measuring device is used to measure and obtain the center line heights of other main journals in sequence, and the position of one of the chuck mechanisms is adjusted according to the height difference between the center line of the corresponding main journal and the theoretical generatrix, so as to Make the height difference between the center line of the corresponding main journal and the theoretical generatrix meet the preset difference; draw a first horizontal line on the two end faces of the crankshaft blank based on the last measured center line height of the main journal; rotate the rotating disk to rotate the other part of the connecting rod journal of the crankshaft blank to the top, use the height measuring device to measure and obtain the height of the second connecting rod center line of the other part of the connecting rod journal, so as to determine the third height difference between the second connecting rod center line and the theoretical generatrix, and adjust the position of one of the chuck mechanisms according to the third height difference so that the The third height difference satisfies the preset difference; the height measuring device is used to measure and obtain the center line heights of other main journals in sequence, and the position of one of the chuck mechanisms is adjusted according to the height difference between the center line of the corresponding main journal and the theoretical generatrix, so that the height difference between the center line of the corresponding main journal and the theoretical generatrix satisfies the preset difference; a second horizontal line intersecting with the first horizontal line is drawn on the two end faces of the crankshaft blank based on the last measured center line height of the main journal; a hole is drilled at the intersection of the first horizontal line and the second horizontal line.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1is a schematic diagram of assembling an alignment system and a V12 crankshaft blank according to an embodiment of the present invention;

[0024] Figure 2 is an exploded schematic diagram of a chuck device according to an embodiment of the present invention;

[0025] Figure 3 is an exploded schematic diagram of a damping telescopic rod according to an embodiment of the present invention;

[0026] Figure 4 is an exploded schematic diagram of a chuck mechanism, an electric drill rod and a connecting sleeve according to an embodiment of the present invention;

[0027] Figure 5 is an exploded schematic diagram of a support base according to an embodiment of the present invention;

[0028] Figure 6 is a schematic diagram of a height measuring device and a V12 crankshaft blank according to an embodiment of the present invention;

[0029] Figure 7 4 is a flow chart of an alignment method of an alignment system according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] Chuck device 1; fixed disk 11; third through hole 111; angle scale line 112; rotating disk 12; mounting groove 121; first spherical groove 1211; second through hole 122; position scale line 123; chuck mechanism 13; mounting disk 131; second spherical groove 1311; first through hole 1312; clamping block 132; inner end surface 1321;

[0032] Support seat 2; support seat body 21; support bottom plate 211; first side 211a; second side 211b; first plate body 212; second plate body 213; mounting boss 214; first support plate 22; assembly groove 221; support surface 223; second support plate 23;

[0033] Height measuring device 3; fixing seat 31; measuring rod 32; measuring cursor 33;

[0034] Damping telescopic rod 4; connecting ball head 41; first rod sleeve 42; second rod sleeve 43; stopper 44; stopper body 441; assembly part 442; telescopic rod 45;

[0035] Electric drill rod 5; electric drill rod body 51; second circumferential limit portion 511; electric drill bit 52;

[0036] Connecting sleeve 6; fourth through hole 61; first circumferential limiting portion 62;

[0037] Alignment system 100;

[0038] V12 crankshaft blank 300, first main journal 301; second main journal 302; third main journal 303; fourth main journal 304; fifth main journal 305; sixth main journal 306; seventh main journal 307; first connecting rod journal 311; second connecting rod journal 312; third connecting rod journal 313; fourth connecting rod journal 314; fifth connecting rod journal 315; sixth connecting rod journal 316; end shaft 321. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] Reference below Figure 1-Figure 7 The crankshaft blank alignment system 100 and control method thereof according to an embodiment of the present invention are described. The crankshaft blank alignment system 100 can find the theoretical generatrix of the crankshaft blank, and then can drill holes on the crankshaft blank to prepare for the fine machining of the crankshaft blank.

[0041] like Figure 1 As shown, the crankshaft blank alignment system 100 according to an embodiment of the present invention includes: two chuck devices 1, a support seat 2 and a height measuring device 3, the two chuck devices 1 are opposite and spaced apart, the chuck device 1 includes a fixed disk 11, a rotating disk 12 and a chuck mechanism 13, the rotating disk 12 is rotatably disposed on the fixed disk 11 and is located on the side of the fixed disk 11 facing the other chuck device 1, the chuck mechanism 13 is disposed on the rotating disk 12 and is located on the side of the rotating disk 12 facing the other chuck device 1, the chuck mechanism 13 is movable in the radial direction of the rotating disk 12, and the chuck mechanism 13 is movable along the arrangement direction of the two chuck devices 1, the support seat 2 is located between the two chuck devices 1, the support seat 2 is used to support the main journal of the crankshaft blank, and the height measuring device 3 is used to measure the height of the connecting rod journal and the main journal of the crankshaft blank.

[0042] Among them, the two chuck devices 1 of the alignment system 100 are arranged relatively spaced apart, and the two ends of the crankshaft blank have two end shafts 321. The two end shafts 321 of the crankshaft blank can be fixed to the two chuck devices 1 respectively, so that the crankshaft blank is placed horizontally between the two chuck devices 1 relative to the horizontal plane, so that the theoretical generatrix of the crankshaft blank is roughly horizontal relative to the horizontal plane, so as to facilitate the subsequent alignment operation.

[0043] The chuck device 1 includes a fixed disk 11, a rotating disk 12 and a chuck mechanism 13. The fixed disk 11 is fixed, and the rotating disk 12 is rotatably fixed to the side of the fixed disk 11 facing the other chuck device 1. The chuck mechanism 13 is movable along the radial direction of the rotating disk 12, so that the crankshaft blank fixed to the chuck device 1 can be moved along the radial direction of the rotating disk 12 to adjust the height difference between the main journals of the crankshaft blank and the height difference between the connecting rod journals, so that the height difference between the main journals and the height difference between the connecting rod journals meet the preset difference, and then find the theoretical generatrix of the crankshaft blank. The chuck mechanism 13 is movable along the arrangement direction of the two chuck devices 1, so that the crankshaft blank fixed to the chuck device 1 can be moved along the arrangement direction of the two chuck devices 1, so as to clamp the crankshaft blank between the two chuck devices 1, facilitate the disassembly and rotation of the crankshaft blank, and also facilitate the adjustment of the height difference between the main journals of the crankshaft blank and the height difference between the connecting rod journals.

[0044] It should be noted that the crankshaft blank can be of different types. The crankshaft blank can have at least two main journals and one connecting rod journal. The present invention takes a V12 crankshaft blank 300 as an example for explanation. The V12 crankshaft blank 300 can be used for a V-type 12-cylinder direct injection supercharged engine (V12TD engine) after fine processing. The V12 crankshaft blank 300 has seven main journals, six connecting rod journals and two end shafts 321. Figure 1 As shown, the seven main journals and six connecting rod journals are respectively: the first main journal 301, the second main journal 302, the third main journal 303, the fourth main journal 304, the fifth main journal 305, the sixth main journal 306, the seventh main journal 307, the first connecting rod journal 311, the second connecting rod journal 312, the third connecting rod journal 313, the fourth connecting rod journal 314, the fifth connecting rod journal 315 and the sixth connecting rod journal 316.

[0045] The support seat 2 is placed between the two chuck devices 1. The support seat 2 can abut against the main journal of the crankshaft blank to support the crankshaft blank. During the alignment process, one end of the crankshaft blank will be separated from the chuck device 1. At this time, the support seat 2 is needed to support the crankshaft blank so that the height of the crankshaft blank is maintained unchanged to ensure that the alignment process proceeds smoothly.

[0046] The height measuring device 3 is used to measure the height of the connecting rod journal and the main journal of the crankshaft blank so that the difference between the measured data of the crankshaft blank to be measured meets the preset difference. The measured data include: the centerline height of each main journal, the centerline height of each crankshaft connecting rod. For example, the height measuring device 3 can be used to measure the highest point M11mm and the lowest point M12mm of the first main journal 301. The centerline height M1mm of the first main journal 301 is the average value of M11mm and M12mm. For example, the height measuring device 3 can be used to measure the first connecting rod journal The highest point C11mm and the lowest point C12mm of 311, the centerline height C1mm of the first connecting rod journal 311 is the average value of C11mm and C12mm, and then the highest point C61mm and the lowest point C62mm of the sixth connecting rod journal 316 are measured, the centerline height C6mm of the sixth connecting rod journal 316 is the average value of C61mm and C62mm, if the height difference between C1mm and C6mm meets the preset difference, the common centerline height of the first connecting rod journal 311 and the sixth connecting rod journal 316 is found.

[0047] Specifically, the alignment process of the alignment system 100 proposed in the present application is described in detail. The specific steps are as follows, and a V12 crankshaft blank is used as an example for illustration.

[0048] The two end shafts 321 of the crankshaft blank can be fixed to the chuck mechanisms 13 of the two chuck devices 1 respectively, so that the crankshaft blank is placed horizontally between the two chuck devices 1 relative to the horizontal plane, so that the theoretical generatrix of the crankshaft blank is roughly horizontal relative to the horizontal plane, so as to facilitate the subsequent alignment operation. Then, the height measuring device 3 is used to measure the highest point M11mm and the lowest point M12mm of the first main journal 301. The centerline height M1mm of the first main journal 301 is the average value of M11mm and M12mm. The height measuring device 3 is used to measure the highest point M71mm and the lowest point M72mm of the seventh main journal 307. The centerline height M7mm of the seventh main journal 307 is the average value of M71mm and M72mm. The first height difference is the difference between M1mm and M7mm. If the first height difference is greater than or equal to the preset difference P, the height position of a chuck mechanism 13 is adjusted until the first height difference is less than the preset difference P. After adjustment, the average value of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0049] Then, the rotating disk 12 is rotated (for example, 120°) to rotate the third connecting rod journal 313 and the fourth connecting rod journal 314 of the crankshaft blank to the top, and the height measuring device 3 is used to measure the highest point C31mm and the lowest point C32mm of the third connecting rod journal 313. The centerline height C3mm of the third connecting rod journal 313 is the average value of C31mm and C32mm. The height measuring device 3 is used to measure the highest point C41mm and the lowest point C42mm of the fourth connecting rod journal 314. The centerline height C4mm of the fourth connecting rod journal 314 is the average value of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to the preset difference P, a chuck mechanism 1 is adjusted. 3, until the difference between C3mm and C4mm is less than the preset difference P. After adjustment, the average value of C3 and C4 is the first connecting rod center line height H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the first connecting rod center line height H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual first connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H01mm. If the difference between the second height difference and H01mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism 13 until the difference between the second height difference and H01mm is less than the preset difference P.

[0050] Then use the height measuring device 3 to measure the highest point M21mm and the lowest point M22mm of the second main journal 302. The centerline height M2mm of the second main journal 302 is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual centerline height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism 13 until the difference between H3mm and H02mm is less than the preset difference P. Then, the same method is used to measure the midline height M3mm of the third main journal 303, the midline height M4mm of the fourth main journal 304, the midline height M5mm of the fifth main journal 305 and the midline height M6mm of the sixth main journal 306. After measuring the midline height of each main journal, adjustments are made according to the above-mentioned adjustment method.

[0051] Then, if the last measured height is the median height M6mm of the sixth main journal 306, take the last measured median height M6mm of the sixth main journal 306 as a reference, support the crankshaft blank with the support seat 2, remove the chuck device 1 that fixes the crankshaft blank on both sides, and use the height measuring device 3 to draw a first horizontal line on the two end faces of the crankshaft blank. The height of the first horizontal line is equal to the median height of the sixth main journal 306.

[0052] Then, the rotating disk 12 is rotated (for example, 120°) to rotate the second connecting rod journal 312 and the fifth connecting rod journal 315 of the crankshaft blank to the top, and the height measuring device 3 is used to measure the highest point C21mm and the lowest point C22mm of the second connecting rod journal 312. The centerline height C2mm of the second connecting rod journal 312 is the average value of C21mm and C22mm. The height measuring device 3 is used to measure the highest point C51mm and the lowest point C52mm of the fifth connecting rod journal 315. The centerline height C5mm of the fifth connecting rod journal 315 is the average value of C51mm and C52mm. If the difference between C2mm and C5mm is greater than or equal to the preset difference P, a chuck is adjusted. The height position of the chuck mechanism 13 is adjusted until the difference between C2mm and C5mm is less than the preset difference P. After adjustment, the average value of C2mm and C5mm is the second connecting rod center line height H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the second connecting rod center line height H4mm of the crankshaft blank. The third height difference is the difference between H4mm and H1mm. The height difference between the actual second connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H03mm. If the difference between the third height difference and H03mm is greater than or equal to the preset difference P, the height position of the chuck mechanism 13 is adjusted until the second height difference is less than the preset difference P.

[0053] Then use the height measuring device 3 to measure the highest point M21mm and the lowest point M22mm of the second main journal 302. The centerline height M2mm of the second main journal 302 is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual centerline height of the second main journal 302 on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism 13 until the difference between H3mm and H02mm is less than the preset difference P. Then, the same method is used to measure the midline height M3mm of the third main journal 303, the midline height M4mm of the fourth main journal 304, the midline height M5mm of the fifth main journal 305 and the midline height M6mm of the sixth main journal 306. After each measurement of the midline height of a main journal, it is adjusted according to the above-mentioned adjustment method.

[0054] Then, if the last measured height is the centerline height M6mm of the sixth main journal 306, take the last measured centerline height M6mm of the sixth main journal 306 as a reference, support the crankshaft blank with the support seat 2, remove the chuck device 1 that fixes the crankshaft blank on both sides, and use the height measuring device 3 to draw a second horizontal line on the two end faces of the crankshaft blank. The height of the second horizontal line is equal to the centerline height of the sixth main journal 306.

[0055] A hole is then drilled at the intersection of the first and second horizontal lines.

[0056] In the above embodiment, the alignment system 100 can clamp the two end shafts 321 of the crankshaft blank on the chuck mechanisms 13 of the two chuck devices 1 respectively, and can use the height measuring device 3 to measure the centerline heights of each main journal and each connecting rod journal, so that the centerline height difference of each main journal and the centerline height difference of each connecting rod journal meet the preset difference, and then the theoretical generatrix height of the crankshaft blank can be found, and holes can be drilled in the end shafts of the crankshaft blank to prepare for the fine machining of the crankshaft blank, which can improve the yield rate of the crankshaft and reduce the cost of manufacturing the crankshaft.

[0057] In an embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the chuck mechanism 13 includes: a mounting disk 131 and a plurality of clamping blocks 132, the mounting disk 131 is arranged on the rotating disk 12, the plurality of clamping blocks 132 are arranged on the mounting disk 131 and are located on the side of the mounting disk 131 away from the rotating disk 12, the plurality of clamping blocks 132 are evenly arranged along the circumference of the mounting disk 131, and the plurality of clamping blocks 132 selectively move along the radial direction of the mounting disk 131 to clamp or loosen the crankshaft blank.

[0058] Among them, the chuck mechanism 13 can be provided with a mounting disk 131 and a plurality of clamping blocks 132. The mounting disk 131 can be provided on the rotating disk 12, and the plurality of clamping blocks 132 are provided on the side of the mounting disk 131 away from the rotating disk 12. The plurality of clamping blocks 132 can be evenly arranged along the circumference of the mounting disk 131. The plurality of clamping blocks 132 can be used to clamp the end shaft 321 of the crankshaft blank so that the crankshaft blank is fixedly connected to the mounting disk 131 of the chuck mechanism 13. By providing a plurality of clamping blocks 132 evenly arranged circumferentially, the crankshaft blank can be more stably installed on the mounting disk 131. The plurality of clamping blocks 132 can be selectively moved along the radial direction of the mounting disk 131 to clamp or loosen the crankshaft blank. It can be suitable for crankshaft blanks with different end shaft sizes, can improve the application scope of the chuck mechanism 13, and can reduce the difficulty of operating to fix the crankshaft blank to the mounting disk 131.

[0059] As some embodiments of the present invention, an elastic member may be arranged between the block 132 and the mounting disk 131, and the elastic member can resist the movement of the block 132 in the radial direction of the mounting disk 131 away from the central axis of the mounting disk 131. Such an arrangement can enable multiple blocks 132 to exert pressure on the crankshaft blank in the direction of the central axis of the mounting disk 131, so that the multiple blocks 132 are in close contact with the two end shafts 321 of the crankshaft blank, so as to improve the fitting stability of the crankshaft blank fixed to the mounting disk 131.

[0060] In an embodiment of the present invention, Figure 2 and Figure 4 As shown, the inner end surface 1321 of the clamping block 132 is configured as an arc-shaped surface.

[0061] Among them, the surface of the block 132 facing the central axis direction of the mounting plate 131 is the inner end face 1321. The inner end face 1321 of the block 132 can be constructed as an arc-shaped surface, which can better abut and cooperate with the outer peripheral wall of the end shaft 321, thereby increasing the contact area between the block 132 and the end shaft 321, improving the connection stability between the block 132 and the end shaft 321, and reducing the shaking of the crankshaft blank when it rotates relative to the chuck mechanism 13, thereby reducing the error of the alignment measurement process and improving the measurement accuracy.

[0062] In an embodiment of the present invention, Figure 2 and Figure 3 As shown, the alignment system 100 also includes: a plurality of damping telescopic rods 4, both ends of the damping telescopic rods 4 have connecting ball heads 41, a mounting groove 121 is formed on the side of the rotating disk 12 facing the mounting disk 131, a plurality of first spherical grooves 1211 are formed on the side wall of the mounting groove 121, and the plurality of first spherical grooves 1211 are arranged in sequence along the circumference of the rotating disk 12, a plurality of second spherical grooves 1311 are formed on the peripheral wall of the mounting disk 131, and the plurality of second spherical grooves 1311 are arranged in sequence along the circumference of the mounting disk 131, the mounting disk 131 is assembled in the mounting groove 121, a plurality of damping telescopic rods 4 are located between the mounting disk 131 and the side walls of the mounting groove 121 and are arranged around the mounting disk 131, and the connecting ball heads 41 at both ends of the damping telescopic rods 4 are respectively installed in the corresponding first spherical grooves 1211 and the corresponding second spherical grooves 1311.

[0063] Among them, a mounting groove 121 can be formed on the side of the rotating disk 12 facing the mounting disk 131, and a plurality of first spherical grooves 1211 can be formed on the side wall of the mounting groove 121, and the plurality of first spherical grooves 1211 can be arranged in sequence along the circumference of the rotating disk 12; a plurality of second spherical grooves 1311 can be formed on the peripheral wall of the mounting disk 131, and the plurality of second spherical grooves 1311 can be arranged in sequence along the circumference of the mounting disk 131, and the number of first spherical grooves 1211 can be the same as the number of second spherical grooves 1311, and the plurality of first spherical grooves 1211 and the plurality of second spherical grooves 1311 correspond one to one, so that the mounting disk 131 can be assembled in the mounting groove 121.

[0064] The alignment system 100 can be provided with multiple damping telescopic rods 4, which include two connecting ball heads 41. The two connecting ball heads 41 are located at both ends of the damping telescopic rod 4, and the outer peripheral surface of the connecting ball head 41 can be constructed as a spherical surface. The two connecting ball heads 41 of each damping telescopic rod 4 can be respectively assembled in the corresponding first spherical groove 1211 and the second spherical groove 1311, and the connecting ball head 41 can be rotatable in the corresponding spherical groove. Multiple damping telescopic rods 4 can be rotated relative to the first spherical groove 1211 and the second spherical groove 1311, so that the chuck mechanism 13 can move along the arrangement direction of the two chuck devices 1, so as to facilitate the crankshaft blank to be clamped between the two chuck devices 1, facilitate the disassembly and assembly of the crankshaft blank, and also facilitate the adjustment of the height difference between the main journals of the crankshaft blank and the height difference between the connecting rod journals, so as to improve the working efficiency of the alignment system 100.

[0065] In an embodiment of the present invention, Figure 2 and Figure 3 As shown, the damping telescopic rod 4 also has a first rod sleeve 42, a second rod sleeve 43, a limiting member 44 and a telescopic rod 45. One end of the first rod sleeve 42 is fixedly connected to the second rod sleeve 43, and a connecting ball head 41 is fixedly provided at the other end of the first rod sleeve 42. The limiting member 44 is located in the first rod sleeve 42 and is movable along the length direction of the first rod sleeve 42. The telescopic rod 45 is inserted into the second rod sleeve 43 and one end extends into the first rod sleeve 42. The end of the telescopic rod 45 extending into the first rod sleeve 42 is fixedly connected to the limiting member 44, and a connecting ball head 41 is fixedly provided at the other end of the telescopic rod 45.

[0066] Among them, the damping telescopic rod 4 can have two connecting ball heads 41, one end of the first rod sleeve 42 of the damping telescopic rod 4 can be fixedly connected to one of the connecting ball heads 41, and the other end of the first rod sleeve 42 can be fixedly connected to the second rod sleeve 43 of the damping telescopic rod 4. The limiter 44 of the damping telescopic rod 4 can include a limiter body 441 and an assembly part 442. The limiter 44 can be located in the first rod sleeve 42, and the side wall of the limiter body 441 can be slidably fitted with the inner wall of the first rod sleeve 42. The assembly part 442 can be fixedly connected to one end of the telescopic rod 45 of the damping telescopic rod 4, and the end of the telescopic rod 45 fixedly connected to the assembly part 442 can extend into the first rod sleeve 42, and the other end of the telescopic rod 45 is fixedly provided with another connecting ball head 41. The telescopic rod 45 can be moved relative to the first rod sleeve 42 along the length direction of the first rod sleeve 42 so that the length of the damping telescopic rod 4 can be changed, and the chuck mechanism 13 can be moved radially along the rotating disk 12 through multiple damping telescopic rods 4 with variable lengths, thereby adjusting the centerline heights of the main journals and connecting rod journals of the crankshaft blank fixed to the alignment system 100, and thus finding the theoretical generatrix height of the crankshaft blank.

[0067] In addition, there is a certain damping between the side wall of the limiter body 441 and the inner wall of the first rod sleeve 42, so that the limiter body 441 has a certain resistance when sliding in the first rod sleeve 42. After the crankshaft blank is fixed to the alignment system 100, due to the certain damping between the side wall of the limiter body 441 and the inner wall of the first rod sleeve 42, the length of the damping telescopic rod 4 will not change automatically (the length of the damping telescopic rod 4 can be changed manually when necessary), which can reduce the shaking of the crankshaft blank, so that the crankshaft blank can be stably and reliably fixed to the alignment system 100, so as to facilitate the measurement of the center line height of each main journal and the center line height of each crankshaft connecting rod, thereby reducing the measurement error.

[0068] As some embodiments of the present invention, the connecting ball head 41 and one end of the first rod sleeve 42 can be connected by welding, clamping, bolting, threading or interference fitting, etc. The other end of the first rod sleeve 42 and the second rod sleeve 43 can be connected by clamping, bolting, threading or interference fitting, etc. The assembly portion 442 and the telescopic rod 45 can be connected by threading, clamping or interference fitting, etc. The telescopic rod 45 and another connecting ball head 41 can be connected by welding, clamping, bolting, threading or interference fitting, etc.

[0069] As some embodiments of the present invention, the connecting ball head 41 and the first rod sleeve 42 can be integrally formed, and the telescopic rod 45 and another connecting ball head 41 can be integrally formed. The integrally formed parts have good structural strength and can reduce the number of parts, thereby reducing the risk of breakage at the connection between the connecting ball head 41 and the first rod sleeve 42, and the telescopic rod 45 and another connecting ball head 41.

[0070] As some embodiments of the present invention, the limiting member 44 may be made of nylon material, which can provide the required resistance.

[0071] In an embodiment of the present invention, Figure 2 As shown, a plurality of damping telescopic rods 4 are evenly arranged in sequence along the circumference of the mounting plate 131 .

[0072] Among them, multiple first spherical grooves 1211 can be evenly arranged in sequence along the circumference of the rotating disk 12, and multiple second spherical grooves 1311 can be evenly arranged in sequence along the circumference of the mounting disk 131. The damping telescopic rods 4 are respectively installed in the corresponding first spherical grooves 1211 and the second spherical grooves 1311. The multiple damping telescopic rods 4 are evenly arranged in sequence along the circumference of the mounting disk 131, so that the multiple damping telescopic rods 4 can support the chuck mechanism 13 from different directions, and the supporting force exerted on the chuck mechanism 13 is uniform, which can facilitate the movement of the chuck mechanism 13 along different radial directions of the rotating disk 12, so as to facilitate the adjustment of the height of the two end shafts 321 of the crankshaft blank clamped in the chuck mechanism 13 (generally speaking, the degree of height adjustment is small), so that the alignment process can be carried out more smoothly, so as to improve the measurement efficiency.

[0073] In an embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the alignment system 100 also includes: an electric drill rod 5, a mounting plate 131 is formed with a first through hole 1312, a rotating plate 12 is formed with a second through hole 122, and a fixed plate 11 is formed with a third through hole 111. The first through hole 1312, the second through hole 122 and the third through hole 111 are relatively arranged, and a plurality of blocks 132 are arranged around the first through hole 1312. The electric drill rod 5 is suitable for being assembled in the first through hole 1312, and the electric drill rod 5 is used to drill holes at both ends of the crankshaft blank.

[0074] The mounting plate 131 may be formed with a first through hole 1312, and the electric drill rod 5 may be assembled in the first through hole 1312 through the third through hole 111 and the second through hole 122. The electric drill rod 5 may have an electric drill bit 52, and the electric drill bit 52 may be installed at one end of the electric drill rod 5 away from the fixed plate 11. The electric drill rod 5 may use the electric drill bit 52 to drill a hole at the end of the corresponding crankshaft blank, and the hole drilling is convenient for further finishing of the crankshaft blank. A plurality of clamping blocks 132 may be arranged around the first through hole 1312 so that the end of the crankshaft blank is directly opposite to the first through hole 1312, which can facilitate the electric drill rod 5 to drill a hole at the end of the crankshaft blank. The rotating disk 12 can be formed with a second through hole 122, the fixed disk 11 can be formed with a third through hole 111, and the first through hole 1312, the second through hole 122 and the third through hole 111 can be relatively arranged, so that the electric drill rod 5 can be directly or indirectly fixedly connected to the first through hole 1312, the second through hole 122 and the third through hole 111, and the central axis of the electric drill rod 5 can be parallel to the horizontal plane (the alignment system 100 can be placed on a horizontal plane for use), so that the central axis of the hole drilled by the electric drill rod 5 is parallel to the central axis of the main journal, reducing the probability of hole deviation, so that the drilled hole is more conducive to further finishing of the crankshaft blank.

[0075] As other embodiments of the present invention, the rotating disk 12 can be constructed as a circular ring, and the fixed disk 11 and the rotating disk 12 jointly define the installation groove 121, so there is no need to design the second through hole 122, which reduces the process steps and improves the efficiency of manufacturing the alignment system 100.

[0076] As some embodiments of the present invention, the electric drill rod 5 can be connected to a driving device, which can be a motor, a transmission shaft, etc. The electric drill rod 5 can perform a feeding movement along the electric drill bit 52 according to the set feed to drill a hole.

[0077] In an embodiment of the present invention, Figure 2 and Figure 4 As shown, the alignment system 100 also includes: a connecting sleeve 6, which is fixed to the first through hole 1312, and the connecting sleeve 6 forms a fourth through hole 61, the inner wall of the fourth through hole 61 forms a first circumferential limit portion 62, the outer wall of the electric drill rod 5 forms a second circumferential limit portion 511, the electric drill rod 5 is passed through the fourth through hole 61, and the first circumferential limit portion 62 and the second circumferential limit portion 511 are limited and matched.

[0078] Among them, the connecting sleeve 6 of the alignment system 100 can be connected to the first through hole 1312 by snap-on connection, bolt connection, threaded connection, etc., the connecting sleeve 6 can be formed with a fourth through hole 61, and the inner side wall of the fourth through hole 61 can be formed with a first circumferential limit portion 62, the electric drill rod 5 can include an electric drill rod body 51, and the outer peripheral wall of the electric drill rod body 51 is formed with a second circumferential limit portion 511, the first circumferential limit portion 62 and the second circumferential limit portion 511 can be limited and matched to prevent the electric drill rod body 51 from rotating in the fourth through hole 61, and the electric drill bit 52 can rotate relative to the fourth through hole 61, and the electric drill bit 52 can drill a hole on the end face of the crankshaft blank through feeding movement.

[0079] As some embodiments of the present invention, the first circumferential limiting portion 62 can be one of the protrusions and the grooves, and the second circumferential limiting portion 511 can be the other of the protrusions and the grooves. The protrusions and the grooves can be limited and matched, so that the first circumferential limiting portion 62 and the second circumferential limiting portion 511 can be limited and matched, thereby preventing the electric drill rod body 51 from rotating in the fourth through hole 61.

[0080] As a specific embodiment of the present invention, the outer peripheral wall of the connecting sleeve 6 is constructed with an external thread, and the inner wall of the first through hole 1312 is constructed with an internal thread. The external thread and the internal thread can be threadedly connected so that the connecting sleeve 6 can be fixedly connected to the chuck mechanism 13, thereby fixing the relative positions of the electric drill rod body 51, the connecting sleeve 6, and the chuck mechanism 13, and the electric drill bit 52 can rotate relative to the electric drill rod body 51, the connecting sleeve 6, and the chuck mechanism 13 to drill holes on the section surface of the crankshaft blank.

[0081] As some embodiments of the present invention, two electric drill rods 5 and two connecting sleeves 6 can be provided. The two electric drill rods 5 are respectively fixedly connected to the corresponding connecting sleeves 6, so that holes can be drilled at both ends of the crankshaft blank at the same time to improve the efficiency of drilling holes and reduce the difficulty of disassembling and assembling the electric drill rods 5.

[0082] As other embodiments of the present invention, two connecting sleeves 6 may be provided, and only one electric drill rod 5 may be provided. The electric drill rod 5 can drill holes at both ends of the crankshaft blank successively. Such a configuration can reduce the number of electric drill rods 5 and save costs.

[0083] In the embodiment of the present invention, the central axis of the first through hole 1312 , the central axis of the second through hole 122 , the central axis of the third through hole 111 , and the central axis of the fourth through hole 61 are collinear.

[0084] Among them, such an arrangement can make the chuck mechanism 13, the connecting sleeve 6, the rotating disk 12 and the fixed disk 11 all face each other, so that the collinear center axes can be roughly parallel to the horizontal plane, and thus the theoretical generatrix of the crankshaft blank fixed to the alignment system 100 can be as parallel to the horizontal plane as possible, so as to reduce the height difference between the main journals and the height difference between the connecting rod journals, so as to improve the efficiency of detecting the theoretical generatrix height of the crankshaft blank, and can reduce the error caused by the alignment system 100.

[0085] In an embodiment of the present invention, Figure 1 and Figure 2 As shown, the outer peripheral wall of the fixed disk 11 is formed with angle scale lines 112 , and the angle scale lines 112 are arranged along the circumference of the rotating disk 12 .

[0086] The outer peripheral wall of the fixed disk 11 may be formed with angle scale lines 112, and the rotating disk 12 may be provided with position scale lines 123. When the rotating disk 12 is rotated, the position scale lines 123 may rotate relative to the angle scale lines 112 to determine the degree of rotation of the rotating disk 12 relative to the fixed disk 11. There may be multiple angle scale lines 112, for example, a short angle scale line 112 may be provided every 5°, and a long angle scale line 112 may be provided every 10°, so that when the rotating disk 12 is rotated, the angle of rotation can be clearly confirmed, which is convenient for detection.

[0087] Taking the V12 crankshaft blank 300 as an example, the V12 crankshaft blank 300 has a first connecting rod journal 311, a second connecting rod journal 312, a third connecting rod journal 313, a fourth connecting rod journal 314, a fifth connecting rod journal 315 and a sixth connecting rod journal 316. The first connecting rod journal 311 and the sixth connecting rod journal 316 have approximately the same midline height relative to the theoretical generatrix. Similarly, the second connecting rod journal 312 and the fifth connecting rod journal 315 have approximately the same midline height relative to the theoretical generatrix. The third connecting rod journal 313 and the fourth connecting rod journal 314 have approximately the same midline height relative to the theoretical generatrix. The V12 crankshaft blank 300 has three groups of connecting rod journals of approximately the same height, and the angle between the extension directions of any two groups of the three groups of connecting rod journals is 120°. When the first connecting rod journal 311 and the sixth connecting rod journal 316 are at the highest point, if you want to further adjust the third connecting rod journal 313 and the fourth connecting rod journal 314 to the highest point, you need to rotate the rotating disk 12 with a rotation angle of 120°. The rotation direction is determined according to the actual situation based on the position of the alignment system 100 and the measurement personnel.

[0088] In an embodiment of the present invention, Figure 1 and Figure 5As shown, the support seat 2 includes: a support seat body 21, a first support plate 22 and a second support plate 23. The first support plate 22 and the second support plate 23 are respectively used to support different main journals of the crankshaft blank. The first support plate 22 and the second support plate 23 are opposite and spaced apart. The first support plate 22 and the second support plate 23 can be lifted and lowered on the support seat body 21.

[0089] The support seat body 21 of the support seat 2 can be placed on a horizontal plane, and the first support plate 22 and the second support plate 23 of the support seat 2 can be used to support different main journals of the crankshaft blank. Figure 1 As shown, the first support plate 22 and the second support plate 23 respectively support the third main journal 303 and the fifth connecting rod journal 315 of the V12 crankshaft blank 300, and the first support plate 22 and the second support plate 23 are both liftably arranged on the support seat body 21, so that the first support plate 22 and the second support plate 23 can be lifted and lowered according to actual needs, and can be selectively supported on different main journals of the crankshaft blank to facilitate the smooth progress of the measurement process.

[0090] As some embodiments of the present invention, the support seat body 21 can be provided with one of the mounting boss 214 and the assembly groove 221, and the first support plate 22 and the second support plate 23 can be provided with the other of the mounting boss 214 and the assembly groove 221, the mounting boss 214 is installed in the corresponding assembly groove 221, and the mounting boss 214 is slidable in the assembly groove 221, so that the first support plate 22 and the second support plate 23 can be slidably connected to the support seat body 21, and when the first support plate 22 and the second support plate 23 slide, the mounting boss 214 and the assembly groove 221 have a guiding function, so that the first support plate 22 and the second support plate 23 can be lifted and lowered along a predetermined trajectory.

[0091] In an embodiment of the present invention, Figure 1 and Figure 5 As shown, the support seat body 21 includes: a support base plate 211, a first plate body 212 and a second plate body 213. The support base plate 211 has a first side 211a and a second side 211b opposite to each other. The first plate body 212 and the second plate body 213 are both fixedly arranged on the upper surface of the support base plate 211. The first plate body 212 and the second plate body 213 are opposite and spaced apart along the arrangement direction of the first support plate 22 and the second support plate 23. From the bottom to the top of the support seat body 21, the first plate body 212 is inclined toward the first side 211a, and the second plate body 213 is inclined toward the second side 211b. The first support plate 22 is slidably arranged on the surface of the first plate body 212 facing the second side 211b, and the second support plate 23 is slidably arranged on the surface of the second plate body 213 facing the first side 211a.

[0092] Among them, the support base plate 211 of the support seat body 21 can be placed on a horizontal plane, the first plate body 212 and the second plate body 213 of the support seat body 21 are fixedly connected to the upper surface of the support base plate 211, the first plate body 212 and the second plate body 213 can be opposite and spaced along the arrangement direction of the first support plate 22 and the second support plate 23, the first plate body 212 can be inclined toward the first side 211a, and the second plate body 213 can be inclined toward the second side 211b, the first support plate 22 is fixed on the first plate body 212, and the second support plate 23 is fixed on the second plate body 213, and the first support plate 22 and the second support plate 23 can be A support surface 223 is constructed, the support surface 223 of the first support plate 22 is inclined toward the first side 211a, and the support surface 223 of the second support plate 23 is inclined toward the second side 211b. The support surface 223 can abut against the main journal of the crankshaft blank to provide support for the crankshaft blank. The two support surfaces 223 of the first support plate 22 and the second support plate 23 with different directions can provide support for the crankshaft blank from both sides of the vertical plane where the theoretical generatrix of the crankshaft blank is located, so that the first support plate 22 and the second support plate 23 can stably and reliably support the crankshaft blank, thereby improving the matching stability of the alignment system 100.

[0093] In addition, the first support plate 22 can be slidably disposed on the surface of the first plate body 212 facing the second side 211b, and the second support plate 23 can be slidably disposed on the surface of the second plate body 213 facing the first side 211a, so that the first support plate 22 and the second support plate 23 can both move up and down relative to the support base plate 211, so that the heights of the two support surfaces 223 of the first support plate 22 and the second support plate 23 can be adjusted to adapt to crankshaft blanks with different main journal diameters, and can facilitate the support seat 2 to support or move away from the main journal of the crankshaft blank, so as to facilitate the adjustment of the position of the support seat 2 for supporting different main journals of the crankshaft blank, which can improve the practicality and flexibility of the support seat 2.

[0094] As some embodiments of the present invention, Figure 5As shown, a mounting boss 214 may be provided on the side of the first plate body 212 facing the first support plate 22, and the mounting boss 214 may be configured as a protrusion, and the width of the mounting boss 214 gradually increases from the end of the mounting boss 214 close to the first plate body 212 to the end of the mounting boss 214 away from the first plate body 212. A mounting groove 221 may be provided on the side of the first support plate 22 facing the first plate body 212, and the mounting groove 221 may be slidably matched with the mounting boss 214 to achieve the effect that the first support plate 22 can move up and down relative to the support seat body 21. Similarly, a mounting boss 214 may be provided on the side of the second plate body 213 facing the second support plate 23, and the mounting boss 214 may be configured as a protrusion, and the width of the mounting boss 214 gradually increases from the end of the mounting boss 214 close to the second plate body 213 to the end of the mounting boss 214 away from the second plate body 213. The second support plate 23 may be provided with a mounting groove 221 on one side facing the second plate body 213, and the mounting groove 221 may be slidably matched with the mounting boss 214 to achieve the effect that the second support plate 23 can move up and down relative to the support seat body 21. By providing the mounting groove 221 and the mounting boss 214, the first support plate 22 and the second support plate 23 can be prevented from being separated from the support seat body 21 when they move up and down relative to the support seat body 21, and the structural stability of the support seat 2 can be improved.

[0095] As some embodiments of the present invention, the first plate body 212, the second plate body 213, and the support seat body 21 can be split parts, and the first plate body 212, the second plate body 213 can be welded, snap-connected, or bolted to the support seat body 21. The split parts are conducive to separately designing the first plate body 212, the second plate body 213, and the support seat body 21, which can reduce the design difficulty and facilitate the replacement of functionally failed parts.

[0096] As some embodiments of the present invention, the first plate body 212, the second plate body 213, and the support seat body 21 can be integrally formed to reduce the number of components and improve the integration of the alignment system 100.

[0097] In an embodiment of the present invention, the alignment system 100 further includes: a plurality of lifting drive mechanisms, which are all disposed on the support seat body 21 , and are respectively connected to the first support plate 22 and the second support plate 23 in transmission connection.

[0098] Among them, multiple lifting drive mechanisms can be arranged on the support seat body 21, and the multiple lifting drive mechanisms can be respectively connected to the first support plate 22 and the second support plate 23 in transmission, so that the first support plate 22 and the second support plate 23 can move up and down relative to the support seat body 21 to adjust the height of the support surface 223 of the first support plate 22 and the second support plate 23, and then adapt to the main journals of different crankshaft blanks.

[0099] As some embodiments of the present invention, the lifting drive mechanism can be a lead screw, and a lead screw can be provided on the first support plate 22 and the second support plate 23. The extension direction of the lead screw can be the same as the extension direction of the first support plate 22 and the second support plate 23. The lead screw can be driven by a driving device such as a motor and a transmission wheel. The rotation of the lead screw can drive the first support plate 22 and the second support plate 23 to rise and fall along the extension direction of the lead screw. The lead screw has a simple structure and a good driving effect, and can effectively drive the first support plate 22 and the second support plate 23 to move up and down relative to the support seat body 21.

[0100] As some embodiments of the present invention, the lifting drive mechanism can be a hydraulic drive. The first support plate 22 and the second support plate 23 can be provided with a hydraulic drive. The hydraulic drive can be driven by a drive device such as a motor and a transmission wheel. The hydraulic drive can drive the first support plate 22 and the second support plate 23 to rise and fall along the extension direction of the screw. The hydraulic drive structure is simple and easy to install and maintain.

[0101] As some embodiments of the present invention, the lifting drive mechanism can be set to two, four, etc., and multiple lifting drive mechanisms can be evenly distributed to the first support plate 22 and the second support plate 23 to achieve the effect of synchronous lifting of the first support plate 22 and the second support plate 23.

[0102] In an embodiment of the present invention, Figure 1 and Figure 6 As shown, the height measuring device 3 includes: a fixed seat 31, a measuring rod 32 and a measuring cursor 33. The measuring rod 32 is fixed to the fixed seat 31 and extends along the vertical direction. The measuring rod 32 has height scale lines, and the height scale lines are arranged along the height direction of the measuring rod 32. The measuring cursor 33 is movably provided on the measuring rod 32 along the height direction of the measuring rod 32.

[0103] Among them, the fixing seat 31 of the height measuring device 3 can be placed on a horizontal plane, the measuring rod 32 of the height measuring device 3 can be fixed on the fixing seat 31 and extend in the vertical direction, the measuring rod 32 can be provided with a height scale line, the height scale line can be arranged along the height direction of the measuring rod 32, the measuring cursor 33 of the height measuring device 3 can move along the height direction of the measuring rod 32, the measuring cursor 33 will correspond to different height scale lines at different positions of the measuring rod 32, and each height scale line can represent the actual height of the measuring cursor 33 relative to the horizontal plane, so as to measure each main journal and each connecting rod journal of the crankshaft blank, so as to find the theoretical generatrix height or median height of each main journal and each connecting rod journal of the crankshaft blank. As some embodiments of the present invention, the measuring cursor 33 can be used to draw a horizontal line on the end face of the crankshaft blank to mark the plane where the cutting hole is located, so that the measuring cursor 33 has multiple functions, improves the integration of the alignment system 100, and reduces the manufacturing cost of the alignment system 100.

[0104] It should be noted that before using the measuring cursor 33 to draw a horizontal line on the end face of the crankshaft blank, the crankshaft blank needs to be supported by the support seat 2 to avoid changes in the position of the crankshaft blank before the line drawing operation is performed.

[0105] Reference below Figure 7 The alignment method of the crankshaft blank according to the embodiment of the present invention is described in detail. The alignment system of the above embodiment is used to align the crankshaft blank. The alignment method of the alignment system proposed by the present invention is described by taking the V12 crankshaft blank as an example. The preset difference P of the alignment method of the crankshaft blank can be 2mm.

[0106] like Figure 7 As shown, the method for aligning the crankshaft blank includes the following steps:

[0107] S1, clamp the two ends of the crankshaft blank on the chuck mechanisms of the two chuck devices respectively, use a height measuring device to measure the center line height of the two main journals located at the outermost ends to determine the first height difference between the two center lines of the two main journals at the outermost ends, adjust the position of a chuck mechanism according to the first height difference, make the first height difference meet the preset difference value to determine the theoretical generatrix height of the crankshaft blank.

[0108] Among them, the two chuck devices of the alignment system are arranged at a relative interval, and the two ends of the crankshaft blank have two end shafts. The two end shafts of the crankshaft blank can be fixed to the chuck mechanisms of the two chuck devices respectively, so that the crankshaft blank is placed horizontally between the two chuck devices relative to the horizontal plane, so that the theoretical generatrix of the crankshaft blank is roughly horizontal relative to the horizontal plane, so as to facilitate the subsequent alignment operation.

[0109] A height measuring device is used to measure the highest point M11mm and the lowest point M12mm of the first main journal. The centerline height M1mm of the first main journal is the average value of M11mm and M12mm. A height measuring device is used to measure the highest point M71mm and the lowest point M72mm of the seventh main journal. The centerline height M7mm of the seventh main journal is the average value of M71mm and M72mm. The first height difference is the difference between M1mm and M7mm. If the first height difference is greater than or equal to a preset difference P, the height position of a chuck mechanism is adjusted until the first height difference is less than the preset difference P. After adjustment, the average value of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0110] S2, rotate the rotating disk to rotate part of the connecting rod journal of the crankshaft blank to the top, use a height measuring device to measure and obtain the height of the first connecting rod center line of the part of the connecting rod journal to determine the second height difference between the first connecting rod center line and the theoretical generatrix, and adjust the position of a chuck mechanism according to the second height difference so that the second height difference meets the preset difference.

[0111] The rotating disk is rotated to rotate the third connecting rod journal and the fourth connecting rod journal of the crankshaft blank to the top, and the highest point C31mm and the lowest point C32mm of the third connecting rod journal are measured by a height measuring device. The median height C3mm of the third connecting rod journal is the average value of C31mm and C32mm. The highest point C41mm and the lowest point C42mm of the fourth connecting rod journal are measured by a height measuring device. The median height C4mm of the fourth connecting rod journal is the average value of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to the preset difference P, the height position of a chuck mechanism is adjusted until C3mm and C The difference of 4mm is less than the preset difference P. After adjustment, the average value of C3 and C4 is the first connecting rod center line height H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the first connecting rod center line height H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual first connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H01mm. If the difference between the second height difference and H01mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between the second height difference and H01mm is less than the preset difference P.

[0112] S3, using a height measuring device to measure the median heights of other main journals in turn, and adjusting the position of a chuck mechanism according to the height difference between the median height of the corresponding main journal and the theoretical generatrix, so that the height difference between the median height of the corresponding main journal and the theoretical generatrix meets the preset difference.

[0113] Among them, taking the measurement of the centerline height of the second main journal as an example, a height measuring device is used to measure the highest point M21mm and the lowest point M22mm of the second main journal. The centerline height M2mm of the second main journal is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual centerline height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, the height position of a chuck mechanism is adjusted until the difference between H3mm and H02mm is less than the preset difference P.

[0114] Then, use the same method to measure the centerline height M3mm of the third main journal, M4mm of the fourth main journal, M5mm of the fifth main journal and M6mm of the sixth main journal in turn. After measuring the centerline height of each main journal, adjust it according to the above-mentioned adjustment method.

[0115] S4, draw the first horizontal line on the two end faces of the crankshaft blank based on the median height of the last measured main journal.

[0116] Among them, the last thing measured is the centerline height M6mm of the sixth main journal. Taking the centerline height M6mm as a reference, the crankshaft blank is supported by a support seat, the chuck device that fixes the crankshaft blank on both sides is removed, and the measuring cursor is used to draw the first horizontal line on the two end faces of the crankshaft blank. The height of the first horizontal line is equal to the centerline height of the sixth main journal.

[0117] S5, rotate the rotating disk to rotate the other part of the connecting rod journal of the crankshaft blank to the top, use the height measuring device to measure the height of the second connecting rod center line of the other part of the connecting rod journal to determine the third height difference between the second connecting rod center line and the theoretical generatrix, and adjust the position of a chuck mechanism according to the third height difference so that the third height difference meets the preset difference.

[0118] The rotating disk is rotated to rotate the second connecting rod journal and the fifth connecting rod journal of the crankshaft blank to the top, and a height measuring device is used to measure the highest point C21mm and the lowest point C22mm of the second connecting rod journal. The centerline height C2mm of the second connecting rod journal is the average value of C21mm and C22mm. The height measuring device is used to measure the highest point C51mm and the lowest point C52mm of the fifth connecting rod journal. The centerline height C5mm of the fifth connecting rod journal is the average value of C51mm and C52mm. If the difference between C2mm and C5mm is greater than or equal to the preset difference P, the height position of a chuck mechanism is adjusted until C2mm and The difference of C5mm is less than the preset difference P. After adjustment, the average value of C2mm and C5mm is the second connecting rod center line height H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the second connecting rod center line height H4mm of the crankshaft blank. The third height difference is the difference between H4mm and H1mm. The height difference between the actual second connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H03mm. If the difference between the third height difference and H03mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the second height difference is less than the preset difference P.

[0119] S6, using a height measuring device to measure the median heights of other main journals in turn, and adjusting the position of a chuck mechanism according to the height difference between the median height of the corresponding main journal and the theoretical generatrix, so that the height difference between the median height of the corresponding main journal and the theoretical generatrix meets the preset difference.

[0120] Among them, taking the measurement of the centerline height of the second main journal as an example, a height measuring device is used to measure the highest point M21mm and the lowest point M22mm of the second main journal. The centerline height M2mm of the second main journal is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual centerline height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, the height position of a chuck mechanism is adjusted until the difference between H3mm and H02mm is less than the preset difference P.

[0121] Then, use the same method to measure the centerline height M3mm of the third main journal, M4mm of the fourth main journal, M5mm of the fifth main journal and M6mm of the sixth main journal in turn. After measuring the centerline height of a main journal each time, adjust it according to the above-mentioned adjustment method.

[0122] S7, taking the median height of the last measured main journal as a reference, draw a second horizontal line intersecting the first horizontal line on the two end surfaces of the crankshaft blank.

[0123] Among them, the last thing measured is the centerline height M6mm of the sixth main journal. Taking the centerline height M6mm as a reference, the crankshaft blank is supported by a support seat, the chuck device that fixes the crankshaft blank on both sides is removed, and the measuring cursor is used to draw a second horizontal line on the two end faces of the crankshaft blank. The height of the second horizontal line is equal to the centerline height of the sixth main journal.

[0124] S8, drilling a hole at the intersection of the first horizontal line and the second horizontal line.

[0125] Specifically, the alignment method of the present application is described in detail below, taking a V12 crankshaft blank as an example.

[0126] The two end shafts of the crankshaft blank can be fixed to the chuck mechanisms of the two chuck devices respectively, so that the crankshaft blank is placed horizontally between the two chuck devices relative to the horizontal plane, so that the theoretical generatrix of the crankshaft blank is roughly horizontal relative to the horizontal plane, so as to facilitate the subsequent alignment operation. Then use a height measuring device to measure the highest point M11mm and the lowest point M12mm of the first main journal. The centerline height M1mm of the first main journal is the average value of M11mm and M12mm. Use a height measuring device to measure the highest point M71mm and the lowest point M72mm of the seventh main journal. The centerline height M7mm of the seventh main journal is the average value of M71mm and M72mm. The first height difference is the difference between M1mm and M7mm. If the first height difference is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the first height difference is less than the preset difference P. After adjustment, the average value of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0127] Then, the rotating disk is rotated (for example, 120°) to rotate the third connecting rod journal and the fourth connecting rod journal of the crankshaft blank to the top, and a height measuring device is used to measure the highest point C31mm and the lowest point C32mm of the third connecting rod journal. The centerline height C3mm of the third connecting rod journal is the average value of C31mm and C32mm. The height measuring device is used to measure the highest point C41mm and the lowest point C42mm of the fourth connecting rod journal. The centerline height C4mm of the fourth connecting rod journal is the average value of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to the preset difference P, the height position of a chuck mechanism is adjusted until C3 The difference between C3 and C4mm is less than the preset difference P. After adjustment, the average value of C3 and C4 is the first connecting rod center line height H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the first connecting rod center line height H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual first connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H01mm. If the difference between the second height difference and H01mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between the second height difference and H01mm is less than the preset difference P.

[0128] Then use the height measuring device to measure the highest point M21mm and the lowest point M22mm of the second main journal. The median height M2mm of the second main journal is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual median height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between H3mm and H02mm is less than the preset difference P. Then, the median height M3mm of the third main journal, the median height M4mm of the fourth main journal, the median height M5mm of the fifth main journal, and the median height M6mm of the sixth main journal are measured in the same way. After measuring the median height of a main journal each time, the adjustment is performed according to the above adjustment method.

[0129] Then if the last measured height is the centerline height M6mm of the sixth main journal, take the last measured centerline height M6mm of the sixth main journal as the reference, support the crankshaft blank with a support seat, remove the chuck device that fixes the crankshaft blank on both sides, and use the measuring cursor to draw the first horizontal line on the two end faces of the crankshaft blank. The height of the first horizontal line is equal to the centerline height of the sixth main journal.

[0130] Then rotate the rotating disk (for example, rotate 120°) to rotate the second connecting rod journal and the fifth connecting rod journal of the crankshaft blank to the top, use a height measuring device to measure the highest point C21mm and the lowest point C22mm of the second connecting rod journal, the centerline height C2mm of the second connecting rod journal is the average of C21mm and C22mm, use a height measuring device to measure the highest point C51mm and the lowest point C52mm of the fifth connecting rod journal, the centerline height C5mm of the fifth connecting rod journal is the average of C51mm and C52mm, if the difference between C2mm and C5mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until The difference between C2mm and C5mm is less than the preset difference P. After adjustment, the average value of C2mm and C5mm is the second connecting rod center line height H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the second connecting rod center line height H4mm of the crankshaft blank. The third height difference is the difference between H4mm and H1mm. The height difference between the actual second connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H03mm. If the difference between the third height difference and H03mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the second height difference is less than the preset difference P.

[0131] Then use the height measuring device to measure the highest point M21mm and the lowest point M22mm of the second main journal. The median height M2mm of the second main journal is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual median height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H02mm. If the difference between H3mm and H02mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between H3mm and H02mm is less than the preset difference P. Then, the median height M3mm of the third main journal, the median height M4mm of the fourth main journal, the median height M5mm of the fifth main journal, and the median height M6mm of the sixth main journal are measured in the same way. After each measurement of the median height of a main journal, it is adjusted according to the above adjustment method.

[0132] Then, if the last measured height is the centerline height M6mm of the sixth main journal, take the last measured centerline height M6mm of the sixth main journal as a reference, support the crankshaft blank with a support seat, remove the chuck device that fixes the crankshaft blank on both sides, and use the measuring cursor to draw a second horizontal line on the two end faces of the crankshaft blank. The height of the second horizontal line is equal to the centerline height of the sixth main journal.

[0133] Then, a hole is drilled at the intersection of the first horizontal line and the second horizontal line. An electric drill rod can be used to drill the hole in the crankshaft blank.

[0134] Therefore, through the alignment method proposed in the present invention, the alignment system can clamp the two end shafts of the crankshaft blank to the chuck mechanisms of the two chuck devices respectively, and can use a height measuring device to measure the median height of each main journal and each connecting rod journal, so that the median height difference of each main journal and the median height difference of each connecting rod journal meet the preset difference, and then the theoretical generatrix height of the crankshaft blank can be found to prepare for the fine machining of the crankshaft blank, which can improve the yield rate of the crankshaft and reduce the cost of manufacturing the crankshaft. In addition, the alignment system proposed in the present invention integrates the two processes of finding the theoretical generatrix and drilling holes at both ends of the crankshaft blank, which can not only improve the precision error caused by the process flow, but also save processes and improve processing efficiency.

[0135] In some embodiments of the present invention, a calibration step is further included, which is as follows: rotating the rotating disk to rotate the first connecting rod journal and the sixth connecting rod journal of the crankshaft blank to the top, using a height measuring device to measure the highest point C11mm and the lowest point C12mm of the first connecting rod journal, the centerline height C1mm of the first connecting rod journal is the average value of C11mm and C12mm, using a height measuring device to measure the highest point C61mm and the lowest point C62mm of the sixth connecting rod journal, the centerline height C6mm of the sixth connecting rod journal is the average value of C61mm and C62mm, if the difference between C1mm and C6mm is greater than or equal to the preset difference P, then adjusting the height of a chuck mechanism position, until the difference between C1mm and C6mm is less than the preset difference P. After adjustment, the average value of C1 and C6 is the third connecting rod center line height H5mm. In particular, if C1mm and C6mm are equal, then C1mm (or C6mm) is the third connecting rod center line height H5mm of the crankshaft blank. The fifth height difference is the difference between H5mm and H1mm. The height difference between the actual third connecting rod center line height on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H04mm. If the difference between the second height difference and H04mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between the second height difference and H04mm is less than the preset difference P.

[0136] Then use the height measuring device to measure the highest point M21mm and the lowest point M22mm of the second main journal. The median height M2mm of the second main journal is the average value of M21mm and M22mm. The difference between M2mm and H1mm is H6mm. The height difference between the actual median height of the second main journal on the V12 crankshaft manufacturing drawing and the theoretical generatrix height of the crankshaft is H05mm. If the difference between H6mm and H05mm is greater than or equal to the preset difference P, adjust the height position of a chuck mechanism until the difference between H6mm and H05mm is less than the preset difference P. Then, the median height M3mm of the third main journal, the median height M4mm of the fourth main journal, the median height M5mm of the fifth main journal, and the median height M6mm of the sixth main journal are measured in the same way. After measuring the median height of a main journal each time, the adjustment is performed according to the above adjustment method.

[0137] Then, taking the last measured median height M6mm of the sixth main journal as a reference, support the crankshaft blank with a support seat, remove the chuck device that fixes the crankshaft blank on both sides, and use the measuring cursor to draw a third horizontal line on the two end faces of the crankshaft blank. The height of the third horizontal line is equal to the median height of the sixth main journal.

[0138] If the first horizontal line, the second horizontal line, and the third horizontal line intersect at the same point, a hole is drilled at that point. When the first horizontal line, the second horizontal line, and the third horizontal line intersect at three different points, if the vertical distance from the intersection of the first horizontal line and the second horizontal line to the third horizontal line is less than the preset difference P, it proves that the measurement result meets the requirements, and a hole can be drilled at the geometric center of the triangle. If the vertical distance from the intersection of the first horizontal line and the second horizontal line to the third horizontal line is greater than or equal to the preset difference P, it proves that the above alignment operation error is large, does not meet the alignment measurement requirements, and needs to be re-aligned.

[0139] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0140] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0141] In the description of the present invention, "plurality" means two or more.

[0142] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0143] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0144] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 representation of the above terms does 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.

[0145] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A crankshaft blank alignment system (100), characterized in that: include: Two chuck devices (1), the two chuck devices (1) are opposite to each other and spaced apart, the chuck devices (1) comprising a fixed disk (11), a rotating disk (12) and a chuck mechanism (13), the rotating disk (12) being rotatably arranged on the fixed disk (11) and being located on a side of the fixed disk (11) facing the other chuck device (1), the chuck mechanism (13) being arranged on the rotating disk (12) and being located on a side of the rotating disk (12) facing the other chuck device (1), the chuck mechanism (13) being movable along the radial direction of the rotating disk (12), and the chuck mechanism (13) being movable along the arrangement direction of the two chuck devices (1); A support seat (2), the support seat (2) being located between the two chuck devices (1), and the support seat (2) being used to support the main journal of the crankshaft blank; A height measuring device (3) is used to measure the height of the connecting rod journal and the main journal of the crankshaft blank.

2. The alignment system (100) according to claim 1, characterized in that: The chuck mechanism (13) comprises: a mounting disk (131) and a plurality of clamping blocks (132); the mounting disk (131) is arranged on the rotating disk (12); the plurality of clamping blocks (132) are arranged on the mounting disk (131) and are located on a side of the mounting disk (131) away from the rotating disk (12); the plurality of clamping blocks (132) are evenly arranged along the circumference of the mounting disk (131); and the plurality of clamping blocks (132) selectively move along the radial direction of the mounting disk (131) to clamp or loosen the crankshaft blank.

3. The alignment system (100) according to claim 2, characterized in that: The inner end surface (1321) of the clamping block (132) is configured as an arc-shaped surface.

4. The alignment system (100) according to claim 2, characterized in that: Also includes: A plurality of damping telescopic rods (4), both ends of the damping telescopic rods (4) are provided with connecting ball heads (41), a mounting groove (121) is formed on a side of the rotating disk (12) facing the mounting disk (131), a plurality of first spherical grooves (1211) are formed on a side wall of the mounting groove (121), the plurality of first spherical grooves (1211) are arranged in sequence along the circumference of the rotating disk (12), a plurality of second spherical grooves (1311) are formed on a peripheral wall of the mounting disk (131), and the plurality of first spherical grooves (1311) are arranged in sequence along the circumference of the rotating disk (12). The two spherical grooves (1311) are arranged in sequence along the circumference of the mounting plate (131); the mounting plate (131) is assembled in the mounting groove (121); a plurality of the damping telescopic rods (4) are located between the mounting plate (131) and the side wall of the mounting groove (121) and are arranged around the mounting plate (131); the connecting ball heads (41) at both ends of the damping telescopic rods (4) are respectively mounted in the corresponding first spherical groove (1211) and the corresponding second spherical groove (1311).

5. The alignment system (100) according to claim 4, characterized in that: The damping telescopic rod (4) further comprises a first rod sleeve (42), a second rod sleeve (43), a stopper (44) and a telescopic rod (45); one end of the first rod sleeve (42) is fixedly connected to the second rod sleeve (43); the other end of the first rod sleeve (42) is fixedly provided with a connecting ball head (41); the stopper (44) is located in the first rod sleeve (42) and is movable along the length direction of the first rod sleeve (42); the telescopic rod (45) is inserted into the second rod sleeve (43) and one end thereof extends into the first rod sleeve (42); the end of the telescopic rod (45) extending into the first rod sleeve (42) is fixedly connected to the stopper (44); the other end of the telescopic rod (45) is fixedly provided with a connecting ball head (41).

6. The alignment system (100) according to claim 4, characterized in that: The plurality of damping telescopic rods (4) are evenly arranged in sequence along the circumference of the mounting plate (131).

7. The alignment system (100) according to claim 2, characterized in that: Also includes: An electric drill rod (5), wherein the mounting plate (131) is formed with a first through hole (1312), the rotating plate (12) is formed with a second through hole (122), the fixed plate (11) is formed with a third through hole (111), the first through hole (1312), the second through hole (122) and the third through hole (111) are arranged opposite to each other, a plurality of the clamping blocks (132) are arranged around the first through hole (1312), the electric drill rod (5) is suitable for being assembled in the first through hole (1312), and the electric drill rod (5) is used for drilling holes at both ends of the crankshaft blank.

8. The alignment system (100) according to claim 7, characterized in that: Also includes: A connecting sleeve (6), wherein the connecting sleeve (6) is fixedly arranged in the first through hole (1312), and the connecting sleeve (6) is formed with a fourth through hole (61), the inner side wall of the fourth through hole (61) is formed with a first circumferential limiting portion (62), the outer peripheral wall of the electric drill rod (5) is formed with a second circumferential limiting portion (511), the electric drill rod (5) is passed through the fourth through hole (61), and the first circumferential limiting portion (62) and the second circumferential limiting portion (511) are limitedly matched.

9. The alignment system (100) according to claim 8, characterized in that: The central axis of the first through hole (1312), the central axis of the second through hole (122), the central axis of the third through hole (111) and the central axis of the fourth through hole (61) are collinear.

10. The alignment system (100) according to any one of claims 1 to 9, characterized in that: Angle scale lines (112) are formed on the outer peripheral wall of the fixed disk (11), and the angle scale lines (112) are arranged along the circumference of the rotating disk (12).

11. The alignment system (100) according to any one of claims 1 to 9, characterized in that: The support seat (2) comprises: a support seat body (21), a first support plate (22) and a second support plate (23); the first support plate (22) and the second support plate (23) are respectively used to support different main journals of the crankshaft blank; the first support plate (22) and the second support plate (23) are opposite to and spaced apart from each other; and the first support plate (22) and the second support plate (23) are both liftably arranged on the support seat body (21).

12. The alignment system (100) according to claim 11, characterized in that: The support seat body (21) comprises: a support base plate (211), a first plate body (212) and a second plate body (213); the support base plate (211) has a first side (211a) and a second side (211b) opposite to each other; the first plate body (212) and the second plate body (213) are both fixedly arranged on the upper surface of the support base plate (211); the first plate body (212) and the second plate body (213) are arranged along the first support plate (22) and the second support plate (23); The first plate (212) is inclined toward the first side (211a), and the second plate (213) is inclined toward the second side (211b). The first support plate (22) is slidably disposed on the surface of the first plate (212) facing the second side (211b), and the second support plate (23) is slidably disposed on the surface of the second plate (213) facing the first side (211a).

13. The alignment system (100) according to claim 11, characterized in that: Also includes: A plurality of lifting drive mechanisms are provided, wherein the plurality of lifting drive mechanisms are all arranged on the support seat body (21), and the plurality of lifting drive mechanisms are respectively connected in transmission with the first support plate (22) and the second support plate (23).

14. The alignment system (100) according to any one of claims 1 to 9, characterized in that: The height measuring device (3) comprises: a fixed seat (31), a measuring rod (32) and a measuring cursor (33); the measuring rod (32) is fixedly arranged on the fixed seat (31) and extends in a vertical direction; the measuring rod (32) has a height scale line, and the height scale line is arranged along the height direction of the measuring rod (32); the measuring cursor (33) is movably arranged on the measuring rod (32) along the height direction of the measuring rod (32).

15. A method for aligning a crankshaft blank, characterized in that: The alignment system is an alignment system according to any one of claims 1 to 14, and the alignment method comprises: Clamping the two ends of the crankshaft blank on the chuck mechanisms of the two chuck devices respectively, using the height measuring device to measure and obtain the height of the center line of the two main journals located at the outermost ends, so as to determine a first height difference between the two center lines of the two main journals at the outermost ends, and adjusting the position of one of the chuck mechanisms according to the first height difference so that the first height difference satisfies a preset difference value to determine the theoretical generatrix height of the crankshaft blank; Rotate the rotating disk to rotate a portion of the connecting rod journal of the crankshaft blank to the top, use the height measuring device to measure and obtain the height of the first connecting rod center line of the portion of the connecting rod journal to determine a second height difference between the first connecting rod center line and the theoretical generatrix, and adjust the position of one of the chuck mechanisms according to the second height difference so that the second height difference meets the preset difference value; Using the height measuring device to sequentially measure the heights of the median lines of the other main journals, and adjusting the position of one of the chuck mechanisms according to the height difference between the median line of the corresponding main journal and the theoretical generatrix, so that the height difference between the median line of the corresponding main journal and the theoretical generatrix satisfies the preset difference; Drawing a first horizontal line on two end surfaces of the crankshaft blank based on the last measured midline height of the main journal as a reference; Rotate the rotating disk to rotate another part of the connecting rod journal of the crankshaft blank to the top, use the height measuring device to measure and obtain the height of the second connecting rod center line of the other part of the connecting rod journal, so as to determine a third height difference between the second connecting rod center line and the theoretical generatrix, and adjust the position of one of the chuck mechanisms according to the third height difference so that the third height difference satisfies the preset difference value; Using the height measuring device to sequentially measure the heights of the median lines of the other main journals, and adjusting the position of one of the chuck mechanisms according to the height difference between the median line of the corresponding main journal and the theoretical generatrix, so that the height difference between the median line of the corresponding main journal and the theoretical generatrix satisfies the preset difference; Based on the last measured median height of the main journal, draw a second horizontal line intersecting the first horizontal line on two end surfaces of the crankshaft blank; A hole is drilled at the intersection of the first horizontal line and the second horizontal line.

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