Alignment system and method for crankshaft blanks

Abstract

This invention discloses a crankshaft blank alignment system and method, relating to the field of measuring device technology. The alignment system includes two chuck assemblies, a support base, and a height measuring device. The two chuck assemblies are opposite to each other and spaced apart. Each chuck assembly includes a fixed plate, a rotating plate, and a chuck mechanism. The rotating plate is rotatably mounted on the fixed plate, and the chuck mechanism is mounted on the rotating plate. The chuck mechanism is movable radially along the rotating plate and also movable along the arrangement direction of the two chuck assemblies. The alignment system can clamp the two end shafts of the crankshaft blank into the chuck mechanisms of the two chuck assemblies respectively. The height measuring device can measure the centerline height of each main journal and each connecting rod journal to ensure that the height difference between the centerline heights of the main journals and the connecting rod journals meets a preset value. This allows the theoretical generatrix height of the crankshaft blank to be found, preparing for the finishing of the crankshaft blank, improving the yield rate of the crankshaft, and reducing the cost of manufacturing the crankshaft.

Description

Technical Field

[0001] This invention relates to the field of measuring device technology, and in particular to a crankshaft blank alignment system and alignment method. Background Technology

[0002] In related technologies, the crankshaft is an important component of the engine, and the manufacturing precision requirements for the crankshaft are very high. Crankshaft blanks often have uneven allowances, V-shaped bends, or S-shaped bends, making it difficult to accurately locate the theoretical generatrix of the crankshaft blank. This will lead to insufficient subsequent machining allowances, reduce the yield rate, and result in higher costs. Summary of the Invention

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

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

[0005] A crankshaft blank alignment system according to an embodiment of the present invention includes: two chuck devices, the two chuck devices being opposite to and spaced apart, each chuck device including a fixed disk, a rotating disk, and a chuck mechanism, the rotating disk being rotatably disposed on the fixed disk and located on the side of the fixed disk facing the other chuck device, the chuck mechanism being disposed on the rotating disk and located on the side of the rotating disk facing the other chuck device, the chuck mechanism being movable radially along the rotating disk and movable along the arrangement direction of the two chuck devices; a support base, the support base being located between the two chuck devices, the support base being used to support the main journal of the crankshaft blank; and a height measuring device, the height measuring device being used to measure the height of the connecting rod journal and the main journal of the crankshaft blank.

[0006] According to an embodiment of the present invention, the crankshaft blank alignment system can clamp the two end shafts of the crankshaft blank into the chuck mechanism of two chuck devices respectively. A height measuring device can be used to measure the centerline height 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 meets a preset difference value. In this way, the theoretical generatrix height of the crankshaft blank can be found, and holes can be drilled at the end shafts of the crankshaft blank to prepare for the finishing of the crankshaft blank. This can improve the yield 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 plate and a plurality of clamping blocks, the mounting plate being disposed on the rotating disk, the plurality of clamping blocks being disposed on the mounting plate and located on the side of the mounting plate opposite to the rotating disk, the plurality of clamping blocks being evenly arranged along the circumference of the mounting plate, and the plurality of clamping blocks being selectively moved radially along the mounting plate to clamp or release the crankshaft blank.

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

[0009] In some embodiments of the present invention, the alignment system further includes: a plurality of damping telescopic rods, each of which has a connecting ball head at both ends; a mounting groove is formed on the side of the rotating disk facing the mounting plate; a plurality of first spherical grooves are formed on the sidewall of the mounting groove; the plurality of first spherical grooves are arranged sequentially along the circumference of the rotating disk; a plurality of second spherical grooves are formed on the circumference of the mounting plate; the plurality of second spherical grooves are arranged sequentially along the circumference of the mounting plate; the mounting plate is assembled in the mounting groove; the plurality of damping telescopic rods are located between the mounting plate and the sidewall of the mounting groove and are arranged around the mounting plate; and the connecting ball heads at both ends of the damping telescopic rods are respectively installed in the corresponding first spherical groove and the corresponding second spherical groove.

[0010] In some embodiments of the present invention, the damping telescopic rod further comprises a first sleeve, a second sleeve, a limiting member, and a telescopic rod. One end of the first sleeve is fixedly connected to the second sleeve, and the other end of the first sleeve is fixedly provided with the connecting ball head. The limiting member is located inside the first sleeve and is movable along the length direction of the first sleeve. The telescopic rod passes through the second sleeve and one end extends into the first sleeve. The end of the telescopic rod extending into the first sleeve is fixedly connected to the limiting member, and the other end of the telescopic rod is fixedly provided with the connecting ball head.

[0011] In some embodiments of the present invention, a plurality of the damping telescopic rods are arranged sequentially and evenly along the circumference of the mounting plate.

[0012] In some embodiments of the present invention, the alignment system further includes: an electric drill rod, wherein the mounting plate has a first through hole, the rotating plate has a second through hole, and the fixing plate has a third through hole, the first through hole, the second through hole and the third through hole are arranged opposite to each other, a plurality of the locking blocks are arranged around the first through hole, the electric drill rod is adapted to be 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 further includes: a connecting sleeve, the connecting sleeve being fixedly disposed in the first through hole, and the connecting sleeve forming a fourth through hole, the inner sidewall of the fourth through hole forming a first circumferential limiting portion, the outer circumferential wall of the electric drill rod forming a second circumferential limiting portion, the electric drill rod passing through the fourth through hole, and the first circumferential limiting portion and the second circumferential limiting portion engaging in a limiting fit.

[0014] In some embodiments of the present invention, the central axis of the first through hole, the central axis of the second through hole, the central axis of the third through hole, and the 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, which are arranged circumferentially along the rotating disk.

[0016] In some embodiments of the present invention, the support base includes: a support base body, a first support plate and a second support plate, the first support plate and the second support plate being used to support different main journals of the crankshaft blank, the first support plate and the second support plate being opposite to and spaced apart, and both the first support plate and the second support plate being flexibly disposed on the support base body.

[0017] In some embodiments of the present invention, the support base body includes: a support base plate, a first plate and a second plate. The support base plate has a first side and a second side facing each other. The first plate and the second plate are both fixed to the upper surface of the support base plate. The first plate and the second plate are facing each other and spaced apart along the arrangement direction of the first support plate and the second support plate. From below to above the support base body, the first plate is inclined toward the first side and the second plate is inclined toward the second side. The first support plate is slidably disposed on the surface of the first plate facing the second side and the second support plate is slidably disposed on the surface of the second plate facing the first side.

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

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

[0020] According to an embodiment of the present invention, a crankshaft blank alignment method is provided, wherein the alignment system is the aforementioned alignment system, and the alignment method includes: clamping both ends of the crankshaft blank onto the chuck mechanisms of the two chuck devices respectively; using the height measuring device to measure and obtain the centerline height of the two outermost main journals to determine a first height difference between the two centerlines of the two outermost main journals; 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; rotating the rotary... The crankshaft blank's connecting rod journal is rotated to its highest position using a moving disc. The height of the first connecting rod midline of this journal is measured using the height measuring device to determine a second height difference between the first connecting rod midline and the theoretical generatrix. The position of one of the chuck mechanisms is adjusted based on this second height difference to ensure it meets a preset value. The height measuring device is then used to sequentially measure the midline heights of the other main journals. The position of one of the chuck mechanisms is adjusted based on the height difference between the midline and the theoretical generatrix of the corresponding main journal. The height difference between the centerline of the corresponding main journal and the theoretical generatrix is ​​made to satisfy the preset difference value; a first horizontal line is drawn on the two end faces of the crankshaft blank using the height of the last measured centerline of the main journal as a reference; the turntable is rotated to rotate another part of the connecting rod journal of the crankshaft blank to the top, and the height of the second connecting rod centerline of the other part of the connecting rod journal is measured using the height measuring device to determine the third height difference between the second connecting rod centerline and the theoretical generatrix; the position of one of the chuck mechanisms is adjusted according to the third height difference, so that the... The third height difference satisfies the preset difference value; the height of the center line of other main journals is measured sequentially using the height measuring device, 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 value; the center line height of the last measured main journal is used as a reference to draw a second horizontal line intersecting the first horizontal line on the two end faces of the crankshaft blank; a hole is drilled at the intersection of the first horizontal line and the second horizontal line.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

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

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

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

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

[0027] Figure 5 This is an exploded view of the support base according to an embodiment of the present invention;

[0028] Figure 6 This 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 This is a flowchart of the alignment method of the alignment system according to an embodiment of the present invention.

[0030] Figure label:

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

[0032] Support base 2; Support base body 21; Support base plate 211; First side 211a; Second side 211b; First plate 212; Second plate 213; Mounting boss 214; First support plate 22; Assembly groove 221; Support surface 223; Second support plate 23;

[0033] Height measuring device 3; fixed base 31; measuring rod 32; measuring vernier 33;

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

[0035] Electric drill rod 5; Electric drill rod body 51; Second circumferential limiting part 511; Electric drill bit 52;

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

[0037] The system for finding the correct position is 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 Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] The following is for reference. Figures 1-7 The present invention describes a crankshaft blank alignment system 100 and its control method according to an embodiment of the present invention. The crankshaft blank alignment system 100 can find the theoretical generatrix of the crankshaft blank, and then drill holes in the crankshaft blank to prepare for the finishing 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 base 2, and a height measuring device 3. The two chuck devices 1 are opposite to each other and spaced apart. Each 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 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 located on the side of the rotating disk 12 facing the other chuck device 1. The chuck mechanism 13 is movable radially along the rotating disk 12 and is movable along the arrangement direction of the two chuck devices 1. The support base 2 is located between the two chuck devices 1 and is used to support the main journal of the crankshaft blank. 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] The alignment system 100 has two chuck devices 1 arranged at intervals relative to each other. The crankshaft blank has two end shafts 321 at both ends. 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 approximately 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, while 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 radially along the rotating disk 12, allowing the crankshaft blank fixed to the chuck device 1 to move radially along the rotating disk 12. This adjusts the height difference between the main journals and the connecting rod journals of the crankshaft blank, ensuring that the height difference between the main journals and the connecting rod journals meets a preset value, thereby finding the theoretical generatrix of the crankshaft blank. The chuck mechanism 13 is movable along the arrangement direction of the two chuck devices 1, allowing the crankshaft blank fixed to the chuck device 1 to move along the arrangement direction of the two chuck devices 1. This facilitates clamping the crankshaft blank between the two chuck devices 1, making it easier to disassemble and rotate the crankshaft blank, and also facilitating the adjustment of the height difference between the main journals and the connecting rod journals of the crankshaft blank.

[0044] It should be noted that crankshaft blanks can be of different types. A crankshaft blank can have at least two main journals and one connecting rod journal. This invention uses a V12 crankshaft blank 300 as an example. After precision machining, the V12 crankshaft blank 300 can be used in a V12 direct-injection turbocharged engine (V12TD engine). The V12 crankshaft blank 300 has seven main journals, six connecting rod journals, and two end shafts 321, as shown below. Figure 1 As shown, the seven main journals and six connecting rod journals are: 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, and 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 separate from the chuck device 1. At this time, the support seat 2 needs to support the crankshaft blank so that the height of the crankshaft blank remains unchanged, so as 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 main journal of the crankshaft blank, so that the difference between the measured data of the crankshaft blank meets the preset difference value. The measured data includes: the center line height of each main journal and the center line 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 center line 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 height of the first connecting rod journal. The highest point C11mm and the lowest point C12mm of the first connecting rod journal 311 are measured. The median height C1mm of the first connecting rod journal 311 is the average of C11mm and C12mm. Then, the highest point C61mm and the lowest point C62mm of the sixth connecting rod journal 316 are measured. The median height C6mm of the sixth connecting rod journal 316 is the average of C61mm and C62mm. If the height difference between C1mm and C6mm meets the preset difference value, then the common median height of the first connecting rod journal 311 and the sixth connecting rod journal 316 has been found.

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

[0048] The two end shafts 321 of the crankshaft blank can be fixed to the chuck mechanism 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 approximately horizontal relative to the horizontal plane, in order 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 midline height M1mm of the first main journal 301 is the average 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 midline height M7mm of the seventh main journal 307 is the average 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 of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, then M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0049] Then rotate the turntable 12 (e.g., rotate 120°) to rotate the third connecting rod journal 313 and the fourth connecting rod journal 314 of the crankshaft blank to the top. Use the height measuring device 3 to measure the highest point C31mm and the lowest point C32mm of the third connecting rod journal 313. The midline height C3mm of the third connecting rod journal 313 is the average of C31mm and C32mm. Use the height measuring device 3 to measure the highest point C41mm and the lowest point C42mm of the fourth connecting rod journal 314. The midline height C4mm of the fourth connecting rod journal 314 is the average of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to the preset difference P, then adjust one chuck mechanism 1. The height position of 3 is adjusted 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 height of the first connecting rod centerline H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the height of the first connecting rod centerline H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual height of the first connecting rod centerline 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, then the height position of a chuck mechanism 13 is adjusted until the difference between the second height difference and H01mm is less than the preset difference P.

[0050] Then, the height measuring device 3 is used to measure the highest point M21mm and the lowest point M22mm of the second main journal 302. The midline height M2mm of the second main journal 302 is the average of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual midline 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 13 is adjusted until the difference between H3mm and H02mm is less than the preset difference P. Then, using the same method, measure the centerline height M3mm of the third main journal 303, the centerline height M4mm of the fourth main journal 304, the centerline height M5mm of the fifth main journal 305, and the centerline height M6mm of the sixth main journal 306 in sequence. After measuring the centerline height of each main journal, adjust it according to the above adjustment method.

[0051] Then, if the final measurement is the center line height M6mm of the sixth main journal 306, take the final measured center line height M6mm of the sixth main journal 306 as the reference, support the crankshaft blank with the support seat 2, remove the chuck device 1 that is fixed to the crankshaft blank on both sides, and use the height measuring device 3 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 center line height of the sixth main journal 306.

[0052] Then rotate the turntable 12 (e.g., rotate 120°) to rotate the second connecting rod journal 312 and the fifth connecting rod journal 315 of the crankshaft blank to the top. Use the height measuring device 3 to measure the highest point C21mm and the lowest point C22mm of the second connecting rod journal 312. The midline height C2mm of the second connecting rod journal 312 is the average of C21mm and C22mm. Use the height measuring device 3 to measure the highest point C51mm and the lowest point C52mm of the fifth connecting rod journal 315. The midline height C5mm of the fifth connecting rod journal 315 is the average of C51mm and C52mm. If the difference between C2mm and C5mm is greater than or equal to the preset difference P, then adjust one chuck. The height position of 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 height of the second connecting rod centerline H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the height of the second connecting rod centerline H4mm of the crankshaft blank. The third height difference is the difference between H4mm and H1mm. The height difference between the actual height of the second connecting rod centerline 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 chuck mechanism 13 is adjusted until the second height difference is less than the preset difference P.

[0053] Then, the height measuring device 3 is used to measure the highest point M21mm and the lowest point M22mm of the second main journal 302. The midline height M2mm of the second main journal 302 is the average of M21mm and M22mm. The difference between M2mm and H1mm is H3mm. The height difference between the actual midline 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, the height position of a chuck mechanism 13 is adjusted until the difference between H3mm and H02mm is less than the preset difference P. Then, using the same method, measure the centerline height M3mm of the third main journal 303, the centerline height M4mm of the fourth main journal 304, the centerline height M5mm of the fifth main journal 305, and the centerline height M6mm of the sixth main journal 306 in sequence. After measuring the centerline height of each main journal, adjust it according to the above adjustment method.

[0054] Then, if the final measurement is the center line height M6mm of the sixth main journal 306, the crankshaft blank is supported by the support seat 2, the chuck device 1 that is fixed to the crankshaft blank on both sides is removed, and the second horizontal line is drawn on the two end faces of the crankshaft blank using the height measuring device 3. The height of the second horizontal line is equal to the center line height of the sixth main journal 306.

[0055] Then drill a hole at the intersection of the first and second horizontal lines.

[0056] In the above embodiments, the alignment system 100 can clamp the two end shafts 321 of the crankshaft blank into the chuck mechanism 13 of the two chuck devices 1 respectively. The height measuring device 3 can be used to measure the center line height of each main journal and each connecting rod journal so that the center line height difference of each main journal and the center line height difference of each connecting rod journal meets the preset difference value. In this way, the theoretical generatrix height of the crankshaft blank can be found, and holes can be drilled at the end shafts of the crankshaft blank to prepare for the finishing of the crankshaft blank. This can improve the yield of the crankshaft and reduce the cost of manufacturing the crankshaft.

[0057] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 4 As shown, the chuck mechanism 13 includes: a mounting plate 131 and a plurality of clamping blocks 132. The mounting plate 131 is disposed on the rotating plate 12, and the plurality of clamping blocks 132 are disposed on the mounting plate 131 and located on the side of the mounting plate 131 opposite to the rotating plate 12. The plurality of clamping blocks 132 are evenly arranged along the circumference of the mounting plate 131, and the plurality of clamping blocks 132 selectively move along the radial direction of the mounting plate 131 to clamp or release the crankshaft blank.

[0058] The chuck mechanism 13 may include a mounting plate 131 and multiple clamping blocks 132. The mounting plate 131 may be located on the rotating plate 12, and the multiple clamping blocks 132 may be located on the side of the mounting plate 131 opposite to the rotating plate 12. The multiple clamping blocks 132 may be evenly arranged around the circumference of the mounting plate 131. The multiple clamping blocks 132 may be used to clamp the end shaft 321 of the crankshaft blank, so that the crankshaft blank is fixedly connected to the mounting plate 131 of the chuck mechanism 13. By setting multiple clamping blocks 132 evenly arranged around the circumference, the crankshaft blank can be more stably mounted on the mounting plate 131. The multiple clamping blocks 132 may be selectively moved radially along the mounting plate 131 to clamp or release the crankshaft blank. This mechanism is applicable to crankshaft blanks with different end shaft sizes, which can improve the applicability of the chuck mechanism 13 and reduce the operational difficulty of fixing the crankshaft blank to the mounting plate 131.

[0059] As some embodiments of the present invention, an elastic element may be provided between the locking block 132 and the mounting plate 131. The elastic element can resist the movement of the locking block 132 in the radial direction away from the central axis of the mounting plate 131. This arrangement allows multiple locking blocks 132 to exert pressure on the crankshaft blank in the direction of the central axis of the mounting plate 131, so that the multiple locking blocks 132 are in close contact with the two end shafts 321 of the crankshaft blank, thereby improving the fit stability of the crankshaft blank fixed to the mounting plate 131.

[0060] In embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the inner end face 1321 of the card block 132 is constructed as an arc-shaped surface.

[0061] The surface of the clamping block 132 facing the central axis of the mounting plate 131 is the inner end face 1321. The inner end face 1321 of the clamping block 132 can be constructed as an arc-shaped surface. The arc-shaped surface can better abut and cooperate with the outer peripheral wall of the end shaft 321, which can increase the contact area between the clamping block 132 and the end shaft 321, improve the connection stability between the clamping block 132 and the end shaft 321, reduce the shaking of the crankshaft blank when rotating relative to the chuck mechanism 13, and thus reduce the error in the alignment measurement process and improve the measurement accuracy.

[0062] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the alignment system 100 further includes: multiple damping telescopic rods 4, each with a connecting ball head 41 at both ends; a mounting groove 121 is formed on the side of the rotating disk 12 facing the mounting disk 131; multiple first spherical grooves 1211 are formed on the sidewall of the mounting groove 121; the multiple first spherical grooves 1211 are arranged sequentially along the circumference of the rotating disk 12; multiple second spherical grooves 1311 are formed on the circumference of the mounting disk 131; the multiple second spherical grooves 1311 are arranged sequentially along the circumference of the mounting disk 131; the mounting disk 131 is assembled in the mounting groove 121; the multiple damping telescopic rods 4 are located between the mounting disk 131 and the sidewall of the mounting groove 121 and are arranged around the mounting disk 131; the connecting ball heads 41 at both ends of the damping telescopic rods 4 are respectively installed in the corresponding first spherical groove 1211 and the corresponding second spherical groove 1311.

[0063] The rotating disk 12 can have a mounting groove 121 formed on the side facing the mounting disk 131. The side wall of the mounting groove 121 can have a plurality of first spherical grooves 1211, which can be arranged sequentially along the circumference of the rotating disk 12. The peripheral wall of the mounting disk 131 can have a plurality of second spherical grooves 1311, which can be arranged sequentially along the circumference of the mounting disk 131. The number of first spherical grooves 1211 can be the same as the number of second spherical grooves 1311. 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 into the mounting groove 121.

[0064] The alignment system 100 can be equipped with multiple damping telescopic rods 4. Each damping telescopic rod 4 includes two connecting ball heads 41 located at both ends of the damping telescopic rod 4. The outer circumferential surface of the connecting ball heads 41 can be constructed as a spherical surface. The two connecting ball heads 41 of each damping telescopic rod 4 can be respectively assembled into the corresponding first spherical groove 1211 and second spherical groove 1311. The connecting ball heads 41 can rotate within the corresponding spherical groove. Multiple damping telescopic rods 4 can rotate 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 clamp the crankshaft blank between the two chuck devices 1, which facilitates the disassembly and assembly of the crankshaft blank, and also facilitates the adjustment of the height difference between the main journals of the crankshaft blank and the height difference between the connecting rod journals, thereby improving the working efficiency of the alignment system 100.

[0065] In embodiments of the present invention, such as 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 the other end of the first rod sleeve 42 is fixedly provided with a connecting ball head 41. The limiting member 44 is located inside the first rod sleeve 42 and can move along the length direction of the first rod sleeve 42. The telescopic rod 45 passes through 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 the other end of the telescopic rod 45 is fixedly provided with a connecting ball head 41.

[0066] The damping telescopic rod 4 may have two connecting ball heads 41. One end of the first sleeve 42 of the damping telescopic rod 4 may be fixedly connected to one of the connecting ball heads 41, and the other end of the first sleeve 42 may be fixedly connected to the second sleeve 43 of the damping telescopic rod 4. The limiting member 44 of the damping telescopic rod 4 may include a limiting member body 441 and an assembly part 442. The limiting member 44 may be located inside the first sleeve 42. The side wall of the limiting member body 441 may slidably fit against the inner wall of the first sleeve 42. The assembly part 442 may be fixedly connected to one end of the telescopic rod 45 of the damping telescopic rod 4. The end of the telescopic rod 45 fixedly connected to the assembly part 442 may extend into the first sleeve 42. The other end of the telescopic rod 45 is fixedly provided with another connecting ball head 41. The telescopic rod 45 can move 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 varied. Through multiple damping telescopic rods 4 with variable lengths, the chuck mechanism 13 can move radially along the rotating disk 12, thereby adjusting the centerline height of each main journal and each connecting rod journal of the crankshaft blank fixed to the alignment system 100, and thus finding the theoretical generatrix height of the crankshaft blank.

[0067] Furthermore, there is a certain damping between the side wall of the limiting member body 441 and the inner wall of the first rod sleeve 42, so that the limiting member body 441 has a certain resistance when sliding in the first rod sleeve 42. After the crankshaft blank is fixed in the alignment system 100, since there is a certain damping between the side wall of the limiting member 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 needed), which can reduce the shaking of the crankshaft blank, so that the crankshaft blank is stably and reliably fixed in 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, and reduce the measurement error.

[0068] As some embodiments of the present invention, one end of the connecting ball head 41 and the first sleeve 42 can be welded, snap-fitted, bolted, threaded, or interference-fitted. The other end of the first sleeve 42 and the second sleeve 43 can be snap-fitted, bolted, threaded, or interference-fitted. The assembly part 442 and the telescopic rod 45 can be threaded, snap-fitted, or interference-fitted. The telescopic rod 45 and the other connecting ball head 41 can be welded, snap-fitted, bolted, threaded, or interference-fitted.

[0069] As some embodiments of the present invention, the connecting ball head 41 and the first sleeve 42 can be integrally formed, and the telescopic rod 45 and the other 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 sleeve 42, and between the telescopic rod 45 and the other 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 embodiments of the present invention, such as Figure 2 As shown, multiple damping telescopic rods 4 are arranged evenly along the circumference of the mounting plate 131.

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

[0073] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 4 As shown, the alignment system 100 also includes: an electric drill rod 5, a mounting plate 131 having a first through hole 1312, a rotating plate 12 having a second through hole 122, and a fixed plate 11 having 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. Multiple locking blocks 132 are arranged around the first through hole 1312. The electric drill rod 5 is adapted to be assembled in the first through hole 1312. The electric drill rod 5 is used to drill holes at both ends of the crankshaft blank.

[0074] The mounting plate 131 may have a first through hole 1312. The electric drill rod 5 can be assembled into 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, which can be installed at the end of the electric drill rod 5 away from the fixed plate 11. The electric drill rod 5 can use the electric drill bit 52 to drill a hole at the end of the corresponding crankshaft blank, so as to facilitate further finishing of the crankshaft blank. Multiple locking blocks 132 can be arranged around the first through hole 1312 so that the end of the crankshaft blank is directly opposite the first through hole 1312, which facilitates the electric drill rod 5 to drill a hole at the end of the crankshaft blank. The rotating disk 12 can have a second through hole 122, and the fixed disk 11 can have a third through hole 111. The first through hole 1312, the second through hole 122, and the third through hole 111 can be arranged opposite to each other 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. The central axis of the electric drill rod 5 can be parallel to the horizontal plane (the alignment system 100 can be placed on the 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 and making the drilled hole more conducive to further finishing of the crankshaft blank.

[0075] In some other embodiments of the present invention, the rotating disk 12 can be constructed as a ring, and the fixed disk 11 and the rotating disk 12 together define the mounting groove 121. In this case, there is no need to design a second through hole 122, which reduces the number of process steps and can improve 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 drive device, which can be a motor, a transmission shaft, etc. The electric drill rod 5 can move along the direction of the electric drill bit 52 according to the set feed to drill a hole.

[0077] In embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the alignment system 100 further includes: a connecting sleeve 6, which is fixed in the first through hole 1312 and has a fourth through hole 61. The inner side wall of the fourth through hole 61 has a first circumferential limiting part 62, and the outer circumferential wall of the electric drill rod 5 has a second circumferential limiting part 511. The electric drill rod 5 passes through the fourth through hole 61, and the first circumferential limiting part 62 and the second circumferential limiting part 511 are mutually limiting and cooperating.

[0078] The connecting sleeve 6 of the alignment system 100 can be connected to the first through hole 1312 by snap-fit, bolt, or thread. The connecting sleeve 6 can form a fourth through hole 61. The inner side wall of the fourth through hole 61 can form a first circumferential limiting part 62. The electric drill rod 5 can include an electric drill rod body 51. The outer circumferential wall of the electric drill rod body 51 forms a second circumferential limiting part 511. The first circumferential limiting part 62 and the second circumferential limiting part 511 can limit each other and prevent the electric drill rod body 51 from rotating in the fourth through hole 61. The electric drill bit 52 can rotate relative to the fourth through hole 61. The electric drill bit 52 can drill a hole on the end face of the crankshaft blank through the feed motion.

[0079] As some embodiments of the present invention, the first circumferential limiting part 62 can be one of the protrusion and the groove, and the second circumferential limiting part 511 can be the other of the protrusion and the groove. The protrusion and the groove can be limited to fit together so that the first circumferential limiting part 62 and the second circumferential limiting part 511 can be limited to fit together, 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 external threads, and the inner side wall of the first through hole 1312 is constructed with internal threads. The external threads and internal threads 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, while 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, which can drill holes at both ends of the crankshaft blank at the same time, thereby improving the drilling efficiency and reducing the difficulty of disassembling and assembling the electric drill rods 5.

[0082] In some 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 in sequence. This arrangement can reduce the number of electric drill rods 5 and save costs.

[0083] In an 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] This arrangement allows the chuck mechanism 13, connecting sleeve 6, rotating disk 12, and fixed disk 11 to be aligned, making the collinear center axes approximately parallel to the horizontal plane. This, in turn, ensures that the theoretical generatrix of the crankshaft blank fixed to the alignment system 100 is as parallel to the horizontal plane as possible, thereby reducing the height difference between the main journals and the connecting rod journals. This improves the efficiency of detecting the theoretical generatrix height of the crankshaft blank and reduces the error caused by the alignment system 100.

[0085] In embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the outer peripheral wall of the fixed disk 11 has angle scale lines 112, which are arranged along the circumference of the rotating disk 12.

[0086] The fixed disk 11 has angular scale lines 112 on its outer peripheral wall, and the rotating disk 12 has position scale lines 123. When the rotating disk 12 is rotated, the position scale lines 123 rotate relative to the angular scale lines 112 to determine the degree of rotation of the rotating disk 12 relative to the fixed disk 11. There can be multiple angular scale lines 112. For example, a short angular scale line 112 can be set every 5°, and a long angular scale line 112 can be set every 10°, so that the angle of rotation can be clearly identified when the rotating disk 12 is rotated, facilitating the 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 are at approximately the same height relative to the center line of the theoretical generatrix. Similarly, the second connecting rod journal 312 and the fifth connecting rod journal 315 are at approximately the same height relative to the center line of the theoretical generatrix, and the third connecting rod journal 313 and the fourth connecting rod journal 314 are at approximately the same height relative to the center line of the theoretical generatrix. The V12 crankshaft blank 300 has three sets of connecting rod journals with approximately the same height. The angle between the extension directions of any two sets of connecting rod journals is 120°. When the first link journal 311 and the sixth link journal 316 are at their highest points, if you want to further adjust the third link journal 313 and the fourth link journal 314 to their highest points, you need to rotate the turntable 12. The rotation angle is 120°, and the rotation direction is determined according to the actual situation based on the alignment system 100 and the position of the measuring personnel.

[0088] In embodiments of the present invention, such as Figure 1 and Figure 5As shown, the support base 2 includes: a support base 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 each other and spaced apart. Both the first support plate 22 and the second support plate 23 can be raised and lowered on the support base body 21.

[0089] The support body 21 of the support base 2 can be placed on a horizontal plane, and the first support plate 22 and the second support plate 23 of the support base 2 can be used to support different main journals of the crankshaft blank. For example, 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. The first support plate 22 and the second support plate 23 can be raised and lowered on the support body 21 so that the first support plate 22 and the second support plate 23 can be raised and lowered according to actual needs, and can selectively support different main journals of the crankshaft blank, so as to facilitate the smooth progress of the measurement process.

[0090] As some embodiments of the present invention, the support base body 21 may 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 may each be provided with the other of the mounting boss 214 and the assembly groove 221. The mounting boss 214 is mounted in the corresponding assembly groove 221 and is slidable in the assembly groove 221 so that the first support plate 22, the second support plate 23 and the support base body 21 can be slidably connected. 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 rise and fall along a predetermined trajectory.

[0091] In embodiments of the present invention, such as Figure 1 and Figure 5 As shown, the support base body 21 includes: a support base plate 211, a first plate 212, and a second plate 213. The support base plate 211 has a first side 211a and a second side 211b. The first plate 212 and the second plate 213 are both fixed to the upper surface of the support base plate 211. The first plate 212 and the second plate 213 are opposite to each other and spaced apart along the arrangement direction of the first support plate 22 and the second support plate 23. From below to above the support base body 21, 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.

[0092] The support base plate 211 of the support body 21 can be placed on a horizontal plane. The first plate 212 and the second plate 213 of the support body 21 are fixedly connected to the upper surface of the support base plate 211. The first plate 212 and the second plate 213 can be opposite to each other and spaced apart along the arrangement direction of the first support plate 22 and the second support plate 23. The first plate 212 can be inclined towards the first side 211a, and the second plate 213 can be inclined towards the second side 211b. The first support plate 22 is fixed on the first plate 212, and the second support plate 23 is fixed on the second plate 213. Both the first support plate 22 and the second support plate 23 can be... The first support plate 22 has a support surface 223, which is inclined toward the first side 211a, and the second support plate 23 has a support surface 223, which is inclined toward the second side 211b. The support surface 223 can abut against the main journal of the crankshaft blank to provide support force to the crankshaft blank. The two support surfaces 223 of the first support plate 22 and the second support plate 23, which are oriented differently, can provide support force to 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 fit stability of the alignment system 100.

[0093] Furthermore, 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, so that both the first support plate 22 and the second support plate 23 can move up and down relative to the support base plate 211, so that the height of the two support surfaces 223 of the first support plate 22 and the second support plate 23 can be adjusted to accommodate 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 adjust the position of the support seat 2 to support different main journals of the crankshaft blank, thereby improving the practicality and flexibility of the support seat 2.

[0094] As some embodiments of the present invention, such as Figure 5As shown, a mounting boss 214 may be provided on the side of the first plate 212 facing the first support plate 22. The mounting boss 214 may be constructed as a protrusion, and its width gradually increases from the end of the mounting boss 214 near the first plate 212 to the end of the mounting boss 214 away from the first plate 212. A mounting groove 221 may be provided on the side of the first support plate 22 facing the first plate 212. The mounting groove 221 can slide with the mounting boss 214 to achieve the effect of the first support plate 22 being able to move up and down relative to the support body 21. Similarly, a mounting boss 214 may be provided on the side of the second plate 213 facing the second support plate 23. The mounting boss 214 may be constructed as a protrusion, and its width gradually increases from the end of the mounting boss 214 near the second plate 213 to the end of the mounting boss 214 away from the second plate 213. The second support plate 23 may have an assembly groove 221 on the side facing the second plate 213. The assembly groove 221 can slide with the mounting boss 214 to achieve the effect of the second support plate 23 moving up and down relative to the support body 21. By providing the assembly groove 221 and the mounting boss 214, the first support plate 22 and the second support plate 23 can be prevented from disengaging from the support body 21 when moving up and down relative to the support body 21, thereby improving the structural stability of the support 2.

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

[0096] As some embodiments of the present invention, the first plate 212, the second plate 213, and the support body 21 can be integrally formed to reduce the number of parts 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, all of which are disposed on the support body 21, and the plurality of lifting drive mechanisms are respectively connected to the first support plate 22 and the second support plate 23 for transmission.

[0098] Multiple lifting drive mechanisms can be installed on the support body 21. These multiple lifting drive mechanisms can be connected to the first support plate 22 and the second support plate 23 respectively, so that the first support plate 22 and the second support plate 23 can move up and down relative to the support body 21 to adjust the height of the support surface 223 of the first support plate 22 and the second support plate 23, thereby adapting to the main journal of different crankshaft blanks.

[0099] As some embodiments of the present invention, the lifting drive mechanism can be a lead screw. Both the first support plate 22 and the second support plate 23 can be provided with lead screws. 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 motor, transmission wheel or other drive device. 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 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 body 21.

[0100] As some embodiments of the present invention, the lifting drive mechanism can be hydraulically driven. Both the first support plate 22 and the second support plate 23 can be equipped with hydraulic drives. The hydraulic drives can be driven by drive devices such as motors and transmission wheels. The hydraulic drives 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 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 the multiple lifting drive mechanisms can be evenly distributed on 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 embodiments of the present invention, such as Figure 1 and Figure 6 As shown, the height measuring device 3 includes: a fixed base 31, a measuring rod 32, and a measuring vernier 33. The measuring rod 32 is fixed to the fixed base 31 and extends in the vertical direction. The measuring rod 32 has height scale lines, which are arranged along the height direction of the measuring rod 32. The measuring vernier 33 is movably mounted on the measuring rod 32 along the height direction of the measuring rod 32.

[0103] The height measuring device 3 has a fixed base 31 that can be placed on a horizontal surface. The measuring rod 32 of the height measuring device 3 can be fixed to the fixed base 31 and extend vertically. The measuring rod 32 can be provided with height scale lines, which can be arranged along the height direction of the measuring rod 32. The measuring vernier 33 of the height measuring device 3 can move along the height direction of the measuring rod 32. Different height scale lines correspond to different positions of the measuring vernier 33 on the measuring rod 32. Each height scale line can represent the actual height of the measuring vernier 33 relative to the horizontal surface, for measuring each main journal and connecting rod journal of the crankshaft blank, to find the theoretical generatrix height or median height of each main journal and connecting rod journal of the crankshaft blank. As some embodiments of the present invention, the measuring vernier 33 can be used to draw horizontal lines on the end face of the crankshaft blank to mark the plane where the bore is located, so that the measuring vernier 33 has multiple functions, improving the integration of the alignment system 100 and reducing the manufacturing cost of the alignment system 100.

[0104] It should be noted that before using the measuring vernier 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 first. At this time, it is necessary to avoid the position of the crankshaft blank changing before the line drawing operation is performed.

[0105] The following is for reference. Figure 7 This paper details a crankshaft blank alignment method according to embodiments of the present invention. The crankshaft blank is aligned using the alignment system described above. The alignment method of the alignment system proposed in this invention is illustrated using a V12 crankshaft blank as an example. The preset difference P in the crankshaft blank alignment method can be 2 mm.

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

[0107] S1, clamp the two ends of the crankshaft blank into the chuck mechanism of the two chuck devices respectively, use a height measuring device to measure and obtain the height of the center line of the two outermost main journals, so as to determine the first height difference between the two center lines of the two outermost main journals, and adjust the position of one chuck mechanism according to the first height difference so that the first height difference meets the preset difference value to determine the theoretical generatrix height of the crankshaft blank.

[0108] The alignment system has two chuck devices that are spaced apart from each other. The crankshaft blank has two end shafts at both ends. The two end shafts of the crankshaft blank can be fixed to the chuck mechanism 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 approximately horizontal relative to the horizontal plane, in order to facilitate the subsequent alignment operation.

[0109] The highest point M11mm and the lowest point M12mm of the first main journal are measured using a height measuring device. The median height M1mm of the first main journal is the average of M11mm and M12mm. The highest point M71mm and the lowest point M72mm of the seventh main journal are measured using the same height measuring device. The median height M7mm of the seventh main journal is the average 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 one chuck mechanism is adjusted until the first height difference is less than the preset difference P. After adjustment, the average of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, then M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0110] S2, rotate the turntable 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 part of the connecting rod journal, so as 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 value.

[0111] In this process, the turntable is rotated to bring the third and fourth connecting rod journals of the crankshaft blank to their highest positions. A height measuring device is used to measure the highest point (C31mm) and lowest point (C32mm) of the third connecting rod journal. The median height (C3mm) of the third connecting rod journal is the average of C31mm and C32mm. Similarly, the height measuring device is used to measure the highest point (C41mm) and lowest point (C42mm) of the fourth connecting rod journal. The median height (C4mm) of the fourth connecting rod journal is the average of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to a preset difference P, the height position of one chuck mechanism is adjusted until C3mm and C4mm are equal. If the 4mm difference is less than the preset difference P, after adjustment, the average value of C3 and C4 is the height of the first connecting rod centerline H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the height of the first connecting rod centerline H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual height of the first connecting rod centerline 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, then the height position of one chuck mechanism is adjusted until the difference between the second height difference and H01mm is less than the preset difference P.

[0112] S3, use a height measuring device to sequentially measure the centerline height of other main journals, and adjust the position of a chuck mechanism according to the height difference between the centerline and the theoretical generatrix of the corresponding main journal so that the height difference between the centerline and the theoretical generatrix of the corresponding main journal meets the preset difference.

[0113] Taking the measurement of the centerline height of the second main journal as an example, the highest point M21mm and the lowest point M22mm of the second main journal are measured using a height measuring device. The centerline height M2mm of the second main journal is the average 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 one chuck mechanism is adjusted until the difference between H3mm and H02mm is less than the preset difference P.

[0114] Then, using the same method, 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 sequence. After measuring the centerline height of each main journal, adjust it according to the above adjustment method.

[0115] S4. Using the height of the center line of the last measured main journal as a reference, draw the first horizontal line on the two end faces of the crankshaft blank.

[0116] The last measurement is the centerline height M6mm of the sixth main journal. Using the centerline height M6mm as a reference, the crankshaft blank is supported by a support seat, the chuck devices that are fixed to the crankshaft blank on both sides are removed, and the first horizontal line is drawn on the two end faces of the crankshaft blank using a measuring vernier. The height of the first horizontal line is equal to the centerline height of the sixth main journal.

[0117] S5, rotate the turntable to rotate the other part of the crankshaft blank connecting rod journal to the top, use a 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 a chuck mechanism according to the third height difference so that the third height difference meets the preset difference value.

[0118] In this process, the turntable is rotated to bring the second and fifth connecting rod journals of the crankshaft blank to their highest positions. A height measuring device is used to measure the highest point (C21mm) and lowest point (C22mm) of the second connecting rod journal. The median height (C2mm) of the second connecting rod journal is the average of C21mm and C22mm. Similarly, the height measuring device is used to measure the highest point (C51mm) and lowest point (C52mm) of the fifth connecting rod journal. The median 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 a preset difference (P), the height position of a chuck mechanism is adjusted until C2mm and C5mm are adjusted to the desired height. If the difference of C5mm is less than the preset difference P, after adjustment, the average value of C2mm and C5mm is the height of the second connecting rod centerline H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the height of the second connecting rod centerline H4mm of the crankshaft blank. The third height difference is the difference between H4mm and H1mm. The height difference between the actual height of the second connecting rod centerline 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, then the height position of one chuck mechanism is adjusted until the second height difference is less than the preset difference P.

[0119] S6. Use a height measuring device to sequentially measure the centerline height of other main journals. Adjust the position of a chuck mechanism according to the height difference between the centerline and the theoretical generatrix of the corresponding main journal so that the height difference between the centerline and the theoretical generatrix of the corresponding main journal meets the preset difference.

[0120] Taking the measurement of the centerline height of the second main journal as an example, the highest point M21mm and the lowest point M22mm of the second main journal are measured using a height measuring device. The centerline height M2mm of the second main journal is the average 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 one chuck mechanism is adjusted until the difference between H3mm and H02mm is less than the preset difference P.

[0121] Then, using the same method, 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 sequence. After measuring the centerline height of each main journal, adjust it according to the above adjustment method.

[0122] S7. Using the height of the center line of the last measured main journal as a reference, draw a second horizontal line on the two end faces of the crankshaft blank that intersects with the first horizontal line.

[0123] The last measurement is the centerline height M6mm of the sixth main journal. Using the centerline height M6mm as a reference, the crankshaft blank is supported by a support seat, the chuck devices that are fixed to the crankshaft blank on both sides are removed, and the measuring vernier 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, drill a hole at the intersection of the first horizontal line and the second horizontal line.

[0125] Specifically, the alignment method of this 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 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 approximately horizontal relative to the horizontal plane, in order to facilitate the subsequent alignment operation. Then, the highest point M11mm and the lowest point M12mm of the first main journal are measured using a height measuring device. The median height M1mm of the first main journal is the average of M11mm and M12mm. The highest point M71mm and the lowest point M72mm of the seventh main journal are measured using a height measuring device. The median height M7mm of the seventh main journal is the average 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 one chuck mechanism is adjusted until the first height difference is less than the preset difference P. After adjustment, the average of M1mm and M7mm is the theoretical generatrix height H1mm of the crankshaft blank. In particular, if M1mm and M7mm are equal, then M1mm (or M7mm) is the theoretical generatrix height H1mm of the crankshaft blank.

[0127] Then rotate the turntable (e.g., 120°) to rotate the third and fourth connecting rod journals of the crankshaft blank to the top. Use a height measuring device to measure the highest point C31mm and the lowest point C32mm of the third connecting rod journal. The median height C3mm of the third connecting rod journal is the average of C31mm and C32mm. Use the height measuring device to measure the highest point C41mm and the lowest point C42mm of the fourth connecting rod journal. The median height C4mm of the fourth connecting rod journal is the average of C41mm and C42mm. If the difference between C3mm and C4mm is greater than or equal to a preset difference P, adjust the height position of one chuck mechanism until C3mm is reached. The difference between C3 and C4mm is less than the preset difference P. After adjustment, the average value of C3 and C4 is the height of the first connecting rod centerline H2mm. In particular, if C3mm and C4mm are equal, then C3mm (or C4mm) is the height of the first connecting rod centerline H2mm of the crankshaft blank. The second height difference is the difference between H2mm and H1mm. The height difference between the actual height of the first connecting rod centerline 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, then the height position of one chuck mechanism is adjusted until the difference between the second height difference and H01mm is less than the preset difference P.

[0128] Then, using a height measuring device, 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 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 one chuck mechanism until the difference between H3mm and H02mm is less than the preset difference P. Then, using the same method, 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. After measuring the centerline height of each main journal, adjust it according to the above method.

[0129] Then, if the final measurement is the center line height M6mm of the sixth main journal, use the final measured center line height M6mm of the sixth main journal as the reference, support the crankshaft blank with the support seat, remove the chuck device that is fixed to the crankshaft blank on both sides, and use the measuring vernier 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 center line height of the sixth main journal.

[0130] Then rotate the turntable (e.g., 120°) to rotate the second and fifth connecting rod journals of the crankshaft blank to their highest positions. Use a height measuring device to measure the highest point C21mm and the lowest point C22mm of the second connecting rod journal. The midline height C2mm of the second connecting rod journal is the average of C21mm and C22mm. Use the height measuring device to measure the highest point C51mm and the lowest point C52mm of the fifth connecting rod journal. The midline 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 a preset difference P, adjust the height position of one 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 height of the second connecting rod centerline, H4mm. In particular, if C2mm and C5mm are equal, then C2mm (or C5mm) is the height of the second connecting rod centerline of the crankshaft blank, H4mm. The third height difference is the difference between H4mm and H1mm. The height difference between the actual height of the second connecting rod centerline 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, then the height position of one chuck mechanism is adjusted until the second height difference is less than the preset difference P.

[0131] Then, using a height measuring device, 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 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 one chuck mechanism until the difference between H3mm and H02mm is less than the preset difference P. Then, 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 the same manner. After each measurement of the centerline height of a main journal, adjust it according to the above method.

[0132] Then, if the final measurement is the center line height M6mm of the sixth main journal, use the final measured center line height M6mm of the sixth main journal as a reference, support the crankshaft blank with a support seat, remove the chuck device that is fixed to the crankshaft blank on both sides, and use the measuring vernier 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 center line height of the sixth main journal.

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

[0134] Therefore, the alignment method proposed in this invention allows the alignment system to clamp the two ends of the crankshaft blank into the chuck mechanisms of two chuck devices. A height measuring device can be used to measure the centerline height of each main journal and each connecting rod journal, ensuring that the height differences between the centerline heights of the main journals and the connecting rod journals meet preset values. This allows the theoretical generatrix height of the crankshaft blank to be found, preparing for the finishing process and improving the yield rate and reducing manufacturing costs. Furthermore, the alignment system proposed in this invention integrates the two processes of finding the theoretical generatrix and drilling holes at both ends of the crankshaft blank. This not only improves accuracy errors caused by process flow but also saves steps and increases processing efficiency.

[0135] In some embodiments of the present invention, a correction step is further included, specifically as follows: The turntable is rotated to rotate the first and sixth connecting rod journals of the crankshaft blank to their highest positions. A height measuring device is used to measure the highest point C11mm and the lowest point C12mm of the first connecting rod journal. The median height C1mm of the first connecting rod journal is the average of C11mm and C12mm. The height measuring device is also used to measure the highest point C61mm and the lowest point C62mm of the sixth connecting rod journal. The median height C6mm of the sixth connecting rod journal is the average of C61mm and C62mm. If the difference between C1mm and C6mm is greater than or equal to a preset difference P, the height of one chuck mechanism is adjusted. The position is adjusted 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 height of the third connecting rod centerline H5mm. In particular, if C1mm and C6mm are equal, then C1mm (or C6mm) is the height of the third connecting rod centerline H5mm of the crankshaft blank. The fifth height difference is the difference between H5mm and H1mm. The height difference between the actual height of the third connecting rod centerline 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, then the height position of one chuck mechanism is adjusted until the difference between the second height difference and H04mm is less than the preset difference P.

[0136] Then, using a height measuring device, 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 of M21mm and M22mm. The difference between M2mm and H1mm is H6mm. 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 H05mm. If the difference between H6mm and H05mm is greater than or equal to the preset difference P, adjust the height position of one chuck mechanism until the difference between H6mm and H05mm is less than the preset difference P. Then, 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 the same manner. After measuring the centerline height of each main journal, adjust it according to the above method.

[0137] Then, using the final measured centerline height M6mm of the sixth main journal as a reference, support the crankshaft blank with a support seat, remove the chuck devices that are fixed to the crankshaft blank on both sides, and use the measuring vernier 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 height of the centerline of the sixth main journal.

[0138] If the first, second, and third horizontal lines intersect at the same point, then drill a hole at that point. If the first, second, and third horizontal lines intersect at three different points, and the vertical distance from the intersection of the first and second horizontal lines to the third horizontal line is less than a preset difference P, then 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 and second horizontal lines to the third horizontal line is greater than or equal to the preset difference P, then the above alignment operation has a large error and does not meet the alignment measurement requirements, requiring re-alignment.

[0139] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

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

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

[0142] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0143] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0144] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

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

Claims

1. A crankshaft blank alignment system (100), characterized in that, include: Two chuck devices (1) are positioned opposite each other and spaced apart. Each 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 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 located on the side of the rotating disk (12) facing the other chuck device (1). The chuck mechanism (13) is movable radially along the rotating disk (12) and is movable along the arrangement direction of the two chuck devices (1). Support base (2), the support base (2) is located between the two chuck devices (1), the support base (2) is used to support the main journal of the crankshaft blank; Height measuring device (3), the height measuring device (3) is used to measure the height of the connecting rod journal and the main journal of the crankshaft blank; The chuck mechanism (13) includes: a mounting plate (131) and a plurality of clamping blocks (132). The mounting plate (131) is disposed on the rotating plate (12). The plurality of clamping blocks (132) are disposed on the mounting plate (131) and located on the side of the mounting plate (131) away from the rotating plate (12). The plurality of clamping blocks (132) are evenly arranged along the circumference of the mounting plate (131), and the plurality of clamping blocks (132) selectively move radially along the mounting plate (131) to clamp or release the crankshaft blank. Multiple damping telescopic rods (4) are provided, each with a connecting ball joint (41) at both ends. A mounting groove (121) is formed on the side of the rotating disk (12) facing the mounting disk (131). Multiple first spherical grooves (1211) are formed on the sidewall of the mounting groove (121), arranged sequentially along the circumference of the rotating disk (12). Multiple second spherical grooves (1311) are formed on the peripheral wall of the mounting disk (131). Two spherical grooves (1311) are arranged sequentially along the circumference of the mounting plate (131). The mounting plate (131) is assembled in the mounting groove (121). A plurality of damping telescopic rods (4) are located between the side walls of the mounting plate (131) and 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 installed in the corresponding first spherical groove (1211) and the corresponding second spherical groove (1311).

2. The alignment system (100) according to claim 1, characterized in that, The inner end face (1321) of the card block (132) is constructed as an arc-shaped surface.

3. The alignment system (100) according to claim 1, characterized in that, The damping telescopic rod (4) also has a first sleeve (42), a second sleeve (43), a limiting member (44), and a telescopic rod (45). One end of the first sleeve (42) is fixedly connected to the second sleeve (43), and the other end of the first sleeve (42) is fixedly provided with a connecting ball head (41). The limiting member (44) is located inside the first sleeve (42) and is movable along the length direction of the first sleeve (42). The telescopic rod (45) passes through the second sleeve (43) and one end extends into the first sleeve (42). The end of the telescopic rod (45) extending into the first sleeve (42) is fixedly connected to the limiting member (44), and the other end of the telescopic rod (45) is fixedly provided with a connecting ball head (41).

4. The alignment system (100) according to claim 1, characterized in that, Multiple damping telescopic rods (4) are arranged evenly in sequence along the circumference of the mounting plate (131).

5. The alignment system (100) according to claim 1, characterized in that, Also includes: An electric drill rod (5) is provided, wherein the mounting plate (131) has a first through hole (1312), the rotating plate (12) has a second through hole (122), and the fixed plate (11) has 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 locking blocks (132) are arranged around the first through hole (1312). The electric drill rod (5) is adapted to be assembled into the first through hole (1312). The electric drill rod (5) is used to drill holes at both ends of the crankshaft blank.

6. The alignment system (100) according to claim 5, characterized in that, Also includes: A connecting sleeve (6) is fixed in the first through hole (1312) and the connecting sleeve (6) forms a fourth through hole (61). The inner sidewall of the fourth through hole (61) forms a first circumferential limiting part (62), and the outer circumferential wall of the electric drill rod (5) forms a second circumferential limiting part (511). The electric drill rod (5) passes through the fourth through hole (61), and the first circumferential limiting part (62) and the second circumferential limiting part (511) are mutually limiting and cooperating.

7. The alignment system (100) according to claim 6, 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.

8. The alignment system (100) according to any one of claims 1-7, 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).

9. The alignment system (100) according to any one of claims 1-7, characterized in that, The support base (2) includes: a support base 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 the main journals of the crankshaft blank. The first support plate (22) and the second support plate (23) are opposite to each other and spaced apart. The first support plate (22) and the second support plate (23) can be raised and lowered on the support base body (21).

10. The alignment system (100) according to claim 9, characterized in that, The main body (21) of the support base includes: a support base plate (211), a first plate (212), and a second plate (213). The support base plate (211) has a first side (211a) and a second side (211b) opposite to each other. The first plate (212) and the second plate (213) are both fixed to the upper surface of the support base plate (211). The first plate (212) and the second plate (213) are arranged along the first support plate (22) and the second support plate (23). The plates are oriented opposite to each other and spaced apart. From below to above the support body (21), 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).

11. The alignment system (100) according to claim 9, characterized in that, Also includes: Multiple lifting drive mechanisms are provided on the support body (21), and the multiple lifting drive mechanisms are respectively connected to the first support plate (22) and the second support plate (23).

12. The alignment system (100) according to any one of claims 1-7, characterized in that, The height measuring device (3) includes: a fixed base (31), a measuring rod (32) and a measuring vernier (33). The measuring rod (32) is fixed to the fixed base (31) and extends in the vertical direction. The measuring rod (32) has height scale lines, which are arranged along the height direction of the measuring rod (32). The measuring vernier (33) is movably disposed on the measuring rod (32) along the height direction of the measuring rod (32).

13. A method for aligning a crankshaft blank, characterized in that, The alignment system is the alignment system according to any one of claims 1-12, and the alignment method includes: The crankshaft blank is clamped at both ends of the two chuck devices respectively. The height of the center line of the two outermost main journals is measured by the height measuring device to determine the first height difference between the two center lines of the two outermost main journals. The position of one of the chuck devices is adjusted according to the first height difference so that the first height difference meets the preset difference value to determine the theoretical generatrix height of the crankshaft blank. Rotate the turntable 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 centerline of the portion of the connecting rod journal, and determine the second height difference between the first connecting rod centerline and the theoretical generatrix. 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. The height measuring device is used to sequentially measure and obtain the center line height of other main journals. 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 meets the preset difference. Using the height of the center line of the last measured main journal as a reference, draw the first horizontal line on the two end faces of the crankshaft blank; Rotate the turntable 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 the third height difference between the second connecting rod center line and the theoretical generatrix, and adjust the position of the chuck mechanism according to the third height difference so that the third height difference meets the preset difference value; The height measuring device is used to sequentially measure and obtain the center line height of other main journals. 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 meets the preset difference. Using the height of the center line of the last measured main journal as a reference, draw a second horizontal line on the two end faces of the crankshaft blank that intersects with the first horizontal line; Drill a hole at the intersection of the first horizontal line and the second horizontal line.

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