CN114801279B - Crankshaft phase adjusting method of multi-point press - Google Patents
Crankshaft phase adjusting method of multi-point press Download PDFInfo
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- CN114801279B CN114801279B CN202210452700.9A CN202210452700A CN114801279B CN 114801279 B CN114801279 B CN 114801279B CN 202210452700 A CN202210452700 A CN 202210452700A CN 114801279 B CN114801279 B CN 114801279B
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- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 230000001360 synchronised effect Effects 0.000 abstract description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
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Abstract
The invention discloses a crankshaft phase adjusting method of a multi-point press, which is suitable for synchronous and consistent adjustment of crankshaft phases of the multi-point press and a four-point press, and has the advantages of quick and reliable adjustment operation, high adjustment efficiency, capability of greatly shortening repeated operation time and capability of ensuring the operation precision of the press after adjustment to reach or exceed the precision range of standard requirements. In addition, the method has wide application range and strong operability.
Description
Technical Field
The invention relates to a press machine, in particular to a crankshaft phase adjusting method of a multipoint press machine.
Background
The double-point or four-point press machine utilizes the crank shaft and the connecting rod to convert the rotary motion of the motor into the vertical motion of the sliding block, thereby realizing the stamping of products, but the synchronous operation consistency of the crank shafts in the double-point press machine is particularly critical and is a key factor for ensuring the stamping precision of the press machine. If phase difference exists between the left crankshaft, the right crankshaft, the front crankshaft and the rear crankshaft in the multi-point press, the vertical precision and the parallel precision of the lower bottom of the sliding block facing the upper plane of the workbench are poor, the quality of a stamping part is affected, and even the damage of a die is caused seriously.
The traditional crankshaft phase adjusting method is to install two crankshafts on a press machine for correction and debugging, so that the labor intensity is high, the working efficiency is low, and the crankshafts need to be disassembled and then assembled for the second time when necessary, so that the operation is very inconvenient.
Disclosure of Invention
The invention aims to provide a crankshaft phase adjusting method of a multipoint press, which is quick and reliable to operate and high in adjusting efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: a crankshaft phase adjustment method of a multi-point press comprises the following specific steps:
(1) A first coupler is coaxially fixed at one end of the first crankshaft, and a second coupler and a third coupler are respectively coaxially fixed at two ends of the intermediate shaft;
(2) Coaxially fixing the first coupler and the second coupler;
(3) A fourth coupler is coaxially sleeved at one end of the second crankshaft, the second crankshaft and the fourth coupler can rotate relatively, and the fourth coupler and the third coupler are coaxially fixed to form a crankshaft assembly;
(4) The whole crankshaft assembly is installed on a correction platform, V-shaped blocks are respectively supported below the left end of a first crankshaft, the middle of an intermediate shaft and the right end of a second crankshaft, an adjusting cushion block is filled in the lower end of each V-shaped block, the second crankshaft is rotated, the direction of a crankshaft part of the second crankshaft is consistent with that of a crankshaft part of the first crankshaft, and then two jacks which are arranged in front and at the back are respectively supported below the two crankshaft parts;
(5) Measuring and comparing whether the height difference between the highest point of the left end of the first crankshaft and the highest point of the right end of the second crankshaft is in the range of 0-0.02 mm or not, and whether the height difference between the highest point of the right end of the first crankshaft and the highest point of the left end of the second crankshaft is in the range of 0-0.02 mm or not, and if yes, carrying out the next step; if not, the first crankshaft is used as a reference, and the adjusting cushion block and the jack are adjusted to adjust the supporting height of the V-shaped block until the height difference is within the required range;
(6) Measuring and comparing whether the height difference between the highest point of the crankshaft part of the first crankshaft and the highest point of the crankshaft part of the second crankshaft is within the range of 0-0.02 mm, and if so, carrying out the next step; if not, taking the first crankshaft as a reference, adjusting two jacks below the crankshaft part of the second crankshaft, and performing rotation fine adjustment on the crankshaft part of the second crankshaft until the height difference between the crankshaft part of the second crankshaft and the crankshaft part of the first crankshaft is within a required range;
(7) A second radial positioning hole is machined between the fourth coupler and the second crankshaft, a second radial positioning pin is inserted into the second radial positioning hole, the second radial positioning pin and the second radial positioning pin are in interference fit, the second crankshaft and the fourth coupler are fixed, and then the fourth coupler is detached from the third coupler;
(8) And processing a second axial positioning hole between the end parts of the fourth coupler and the second crankshaft, inserting a second axial positioning pin into the second axial positioning hole, performing interference fit on the second axial positioning hole and the second axial positioning hole, coaxially fixing the fourth coupler and the third coupler, keeping the directions of the crankshaft part of the first crankshaft and the crankshaft part of the second crankshaft consistent, and completing the adjustment of the phase of the crankshaft (namely the double-point crankshaft) of the double-point press.
Further, in the step (1), a method for fixing the first crankshaft and the first coupling includes: the first shaft coupler is coaxially sleeved on a first crankshaft, a first radial positioning hole is formed between the first shaft coupler and the first crankshaft, a first radial positioning pin is inserted into the first radial positioning hole and is in interference fit with the first radial positioning pin, so that the first crankshaft and the first shaft coupler are fixed, a first axial positioning hole is formed between the first shaft coupler and the end portion of the first crankshaft, and a first axial positioning pin is installed in the first axial positioning hole and is in interference fit with the first axial positioning pin; the fixing method of the intermediate shaft, the second coupling and the third coupling is the same as that of the first coupling.
Furthermore, the flange plate of the first coupler and the flange plate of the second coupler, and the flange plate of the third coupler and the flange plate of the fourth coupler are fixedly connected through screw pins.
Furthermore, the adjusting cushion block comprises a base, a cushion block and an adjusting screw rod, the lower end face of the cushion block is matched with the upper end face of the base in an inclined plane, the adjusting screw rod is horizontally and rotatably connected with the base, and the adjusting screw rod is in threaded connection with the cushion block.
Further, if the multi-point press is a four-point press, after the phase adjustment of the two-point crankshaft is completed, the following steps are performed:
(1) Installing the adjusted double-point crankshaft into a press, and respectively and coaxially fixing a first gear and a second gear at the left end of the first crankshaft and the right end of the second crankshaft;
(2) Rotating the double-point crankshafts to a crankshaft position in a horizontal position and then fixing the crankshaft position, installing a third crankshaft in the press, wherein the third crankshaft is parallel to the double-point crankshafts, and positioning the crankshaft part of the third crankshaft after rotating the crankshaft part of the third crankshaft to the horizontal position, and the crankshaft part of the third crankshaft is arranged opposite to the crankshaft part of the first crankshaft in the double-point crankshafts;
(3) Respectively measuring the heights from the crankshaft part of the first crankshaft and the crankshaft part of the third crankshaft to the reference surface, comparing whether the height difference between the crankshaft part of the first crankshaft and the crankshaft part of the third crankshaft is in the range of 0-0.03 mm, and if so, carrying out the next step; if not, the crankshaft part of the third crankshaft is finely rotated by taking the first crankshaft as a reference, and the height difference between the crankshaft part and the third crankshaft is positioned after reaching the requirement;
(4) Mounting a third gear at the end part of the third crankshaft, meshing the third gear with the first gear, then repairing the key, and then mounting the key into key grooves of the third gear and the third crankshaft to fix the third gear and the third crankshaft;
(5) And (3) installing a fourth crankshaft parallel to the double-point crankshaft in the press, enabling the crankshaft part of the fourth crankshaft to be arranged opposite to the crankshaft part of the second crankshaft in the double-point crankshaft, then carrying out phase adjustment on the crankshaft part of the fourth crankshaft in the same way as the method in the step (3), installing a fourth gear at the end part of the fourth crankshaft after the adjustment is in place, enabling the fourth gear to be meshed with the second gear, similarly repairing keys, then installing the fourth gear into key grooves of the fourth gear and the fourth crankshaft, enabling the fourth gear and the fourth crankshaft to be fixed, and finally completing the crankshaft phase adjustment of the four-point press.
Compared with the prior art, the method has the advantages that the method is suitable for synchronous and consistent adjustment of the crankshaft phases of the double-point press and the four-point press, the adjustment operation is quick and reliable, the adjustment efficiency is high, the repeated operation time can be greatly shortened, and the operation precision of the adjusted press can reach or exceed the precision range required by the standard. In addition, the method has wide application range and strong operability.
Drawings
FIG. 1 is a schematic view of a crankshaft structure of a four-point press according to the present invention;
FIGS. 2-3 are schematic views of the state of step (1) according to a first embodiment of the present invention;
FIG. 4 is a diagram illustrating a state of step (2) according to a first embodiment of the present invention;
FIG. 5 is a diagram illustrating a state of step (3) according to the first embodiment of the present invention;
FIG. 6 is a diagram illustrating a state of step (4) according to the first embodiment of the present invention;
FIG. 7 is a diagram illustrating a state of step (5) according to a first embodiment of the present invention;
FIG. 8 is a diagram illustrating a state of step (6) according to a first embodiment of the present invention;
FIGS. 9-10 are schematic diagrams of the state of step (8) according to the first embodiment of the present invention;
FIG. 11 is a schematic diagram of a spacer adjustment block according to a first embodiment of the present invention;
FIG. 12 is a diagram illustrating the state of step (9) according to the second embodiment of the present invention;
FIG. 13 is a diagram illustrating the status of steps (10) - (11) according to the second embodiment of the present invention;
FIG. 14 is a diagram illustrating a state of step (12) according to the second embodiment of the present invention;
fig. 15 is a schematic diagram of a state of step (13) in the second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: as shown in the figure, the crankshaft phase adjusting method of the double-point press comprises the following specific steps:
(1) The first coupling 11 is coaxially sleeved on the first crankshaft 1, then a first radial positioning hole 12 is machined between the first coupling 11 and the first crankshaft 1, a first radial positioning pin is inserted into the first radial positioning hole 12, the first radial positioning pin and the first radial positioning hole are in interference fit, so that the first crankshaft 1 and the first coupling 11 are fixed, then a first axial positioning hole is machined between the first coupling 11 and the end part of the first crankshaft 1, and a first axial positioning pin 13 is installed in the first axial positioning hole, and the first axial positioning pin and the first coupling 11 are in interference fit, as shown in fig. 2; a second coupling 21 and a third coupling 22 are respectively coaxially sleeved at two ends of the intermediate shaft 2, and the fixing method of the intermediate shaft 2, the second coupling 21 and the third coupling 22 is the same as that of the first coupling 11, as shown in fig. 3;
(2) Coaxially fixing the first coupling 11 and the second coupling 21, as shown in fig. 4;
(3) A fourth coupler 31 is coaxially sleeved at one end of the second crankshaft 3, the second crankshaft 3 and the fourth coupler 31 can rotate relatively, and the fourth coupler 31 and the third coupler 22 are coaxially fixed to form a crankshaft assembly, as shown in fig. 5;
(4) The whole crankshaft assembly is installed on a correction platform, a V-shaped block 4 is supported below the left end of a first crankshaft 1, the middle part of an intermediate shaft 2 and the right end of a second crankshaft 3 respectively, an adjusting cushion block 9 is padded at the lower end of the V-shaped block 4, the second crankshaft 3 is rotated to enable the direction of a crankshaft part 32 of the second crankshaft 3 to be consistent with that of a crankshaft part 14 of the first crankshaft 1, and then two jacks 5 which are arranged in front and at the back are supported below the two crankshaft parts respectively, as shown in FIG. 6;
(5) Measuring and comparing whether the height difference between the highest point A at the left end of the first crankshaft 1 and the highest point B at the right end of the second crankshaft 3 is in the range of 0-0.02 mm or not, and whether the height difference between the highest point C at the right end of the first crankshaft 1 and the highest point D at the left end of the second crankshaft 3 is in the range of 0-0.02 mm or not, and if so, carrying out the next step; if not, the adjusting cushion block 9 below the intermediate shaft 2, the adjusting cushion block 9 below the right end of the second crankshaft 3 and the jack 5 below the two crankshaft parts are adjusted by taking the first crankshaft 1 as a reference until the height difference is within the required range, as shown in fig. 7;
(6) Measuring and comparing whether the height difference between the highest point E of the crankshaft part 14 of the first crankshaft 1 and the highest point F of the crankshaft part 32 of the second crankshaft 3 is within the range of 0-0.02 mm, and if so, carrying out the next step; if not, the two jacks 5 below the crankshaft part 32 of the second crankshaft 3 are adjusted by taking the first crankshaft 1 as a reference, and the crankshaft part 32 of the second crankshaft 3 is finely rotated until the height difference with the crankshaft part 14 of the first crankshaft 1 is within a required range, as shown in fig. 8;
(7) A second radial positioning hole 33 is machined between the fourth coupler 31 and the second crankshaft 3, and a second radial positioning pin is inserted into the second radial positioning hole 33, and the second radial positioning pin and the second radial positioning hole are in interference fit, so that the second crankshaft 3 and the fourth coupler 31 are fixed, and then the fourth coupler 31 is detached from the third coupler 22;
(8) A second axial positioning hole 34 is formed between the fourth coupling 31 and the end of the second crankshaft 3, a second axial positioning pin 35 is inserted into the second axial positioning hole 34, the two are in interference fit, as shown in fig. 9, and then the fourth coupling 31 and the third coupling 22 are coaxially fixed, the directions of the crankshaft part 14 of the first crankshaft 1 and the crankshaft part 32 of the second crankshaft 3 are kept consistent, and the adjustment of the crankshaft (i.e., the two-point crankshaft) phase of the two-point press is completed, as shown in fig. 10.
In the first embodiment, the flange of the first coupling 11 and the flange of the second coupling 21, and the flange of the third coupling 22 and the flange of the fourth coupling 31 are connected and fixed by the screw pins 6. The adjusting cushion block 9 comprises a base 91, a cushion block 92 and an adjusting screw 93, the lower end face of the cushion block 92 is matched with the upper end face of the base 91 through an inclined plane, the adjusting screw 93 is horizontally and rotatably connected with the base 91, and the adjusting screw 93 is in threaded connection with the cushion block 92.
Example two: as shown in the figure, after the phase adjustment of the two-point crankshaft of the first embodiment is completed, the method for adjusting the crankshaft phase of the four-point press further comprises the following steps:
(9) Installing the adjusted double-point crankshaft into a press, and coaxially fixing a first gear 15 and a second gear 36 at the left end of the first crankshaft 1 and the right end of the second crankshaft 3 respectively, as shown in FIG. 12;
(10) Rotating the two-point crankshaft to a crankshaft position in a horizontal position and then fixing, installing a third crankshaft 7 in the press, wherein the third crankshaft 7 is parallel to the two-point crankshaft, rotating a crankshaft part 71 of the third crankshaft 7 to the horizontal position and then positioning, and the crankshaft part 71 of the third crankshaft 7 is arranged opposite to a crankshaft part 14 of the first crankshaft 1 in the two-point crankshaft, as shown in FIG. 13;
(11) Respectively measuring the heights of the crankshaft part 14 of the first crankshaft 1 and the crankshaft part 71 of the third crankshaft 7 to a reference surface, comparing whether the height difference between the two is in the range of 0-0.03 mm, and if so, carrying out the next step; if not, the crankshaft part 71 of the third crankshaft 7 is finely rotated with reference to the first crankshaft 1, and the third crankshaft 7 is positioned after the height difference between the two reaches the above range requirement, as shown in fig. 13;
(12) After the adjustment is completed, the third gear 72 is mounted on the end of the third crankshaft 7, the third gear 72 is meshed with the first gear 15, and then the key 73 is installed into the key grooves of the third gear 72 and the third crankshaft 7 after being repaired, so that the third gear 72 is fixed to the third crankshaft 7, as shown in fig. 14;
(13) After the fourth crankshaft 8 parallel to the two-point crankshaft is mounted in the press, the crankshaft part 81 of the fourth crankshaft 8 is disposed to face the crankshaft part 32 of the second crankshaft 3 in the two-point crankshaft, the crankshaft part 81 of the fourth crankshaft 8 is phase-adjusted in the same manner as in the step (3), and after the phase adjustment is completed, the fourth gear 82 is mounted on the end of the fourth crankshaft 8, the fourth gear 82 is meshed with the second gear 36, the key is also repaired and then is mounted in the key grooves of the fourth gear 82 and the fourth crankshaft 8, the fourth gear 82 and the fourth crankshaft 8 are fixed, and finally, the crankshaft phase adjustment of the four-point press is completed, as shown in fig. 15.
The scope of the present invention includes, but is not limited to, the above embodiments, and the scope of the present invention is defined by the appended claims, and any substitutions, modifications, and improvements that may occur to those skilled in the art are intended to fall within the scope of the present invention.
Claims (4)
1. A crankshaft phase adjustment method of a multi-point press is characterized by comprising the following specific steps:
(1) A first coupler is coaxially fixed at one end of the first crankshaft, and a second coupler and a third coupler are respectively coaxially fixed at two ends of the intermediate shaft;
(2) Coaxially fixing the first coupler and the second coupler;
(3) A fourth coupler is coaxially sleeved at one end of the second crankshaft, the second crankshaft and the fourth coupler can rotate relatively, and the fourth coupler and the third coupler are coaxially fixed to form a crankshaft assembly;
(4) The whole crankshaft assembly is installed on a correction platform, a V-shaped block is supported below the left end of a first crankshaft, the middle of an intermediate shaft and the right end of a second crankshaft respectively, an adjusting cushion block is filled in the lower end of the V-shaped block, the adjusting cushion block comprises a base, a cushion block and an adjusting screw rod, the lower end face of the cushion block is in inclined plane fit with the upper end face of the base, the adjusting screw rod is horizontally and rotatably connected with the base, and the adjusting screw rod is in threaded connection with the cushion block; rotating the second crankshaft to make the crankshaft part of the second crankshaft consistent with the crankshaft part of the first crankshaft in direction, and then respectively supporting two jacks arranged in front and at the back below the two crankshaft parts;
(5) Measuring and comparing whether the height difference between the highest point of the left end of the first crankshaft and the highest point of the right end of the second crankshaft is in the range of 0-0.02 mm or not and whether the height difference between the highest point of the right end of the first crankshaft and the highest point of the left end of the second crankshaft is in the range of 0-0.02 mm or not, and if yes, carrying out the next step; if not, the first crankshaft is used as a reference, and the adjusting cushion block and the jack are adjusted to adjust the supporting height of the V-shaped block until the height difference is within the required range;
(6) Measuring and comparing whether the height difference between the highest point of the crankshaft part of the first crankshaft and the highest point of the crankshaft part of the second crankshaft is within the range of 0-0.02 mm, and if so, carrying out the next step; if not, taking the first crankshaft as a reference, adjusting two jacks below the crankshaft part of the second crankshaft, and performing rotation fine adjustment on the crankshaft part of the second crankshaft until the height difference between the crankshaft part of the second crankshaft and the crankshaft part of the first crankshaft is within a required range;
(7) A second radial positioning hole is machined between the fourth coupler and the second crankshaft, a second radial positioning pin is inserted into the second radial positioning hole, and the second radial positioning pin and the second radial positioning hole are in interference fit, so that the second crankshaft and the fourth coupler are fixed, and then the fourth coupler is detached from the third coupler;
(8) And processing a second axial positioning hole between the end parts of the fourth coupler and the second crankshaft, inserting a second axial positioning pin into the second axial positioning hole, performing interference fit on the second axial positioning hole and the second axial positioning hole, coaxially fixing the fourth coupler and the third coupler, keeping the directions of the crankshaft part of the first crankshaft and the crankshaft part of the second crankshaft consistent, and completing the adjustment of the crankshaft phase of the double-point press.
2. A method of adjusting a phase of a crankshaft of a multi-point press as claimed in claim 1, wherein: in the step (1), the fixing method of the first crankshaft and the first coupling includes: the first shaft coupler is coaxially sleeved on the first crankshaft, a first radial positioning hole is machined between the first shaft coupler and the first crankshaft, a first radial positioning pin is inserted into the first radial positioning hole and is in interference fit with the first radial positioning hole, so that the first crankshaft and the first shaft coupler are fixed, a first axial positioning hole is machined between the first shaft coupler and the end portion of the first crankshaft, and a first axial positioning pin is installed in the first axial positioning hole and is in interference fit with the first axial positioning pin; the fixing method of the intermediate shaft, the second coupling and the third coupling is the same as that of the first coupling.
3. A method of adjusting a phase of a crankshaft of a multi-point press as claimed in claim 1, wherein: and the flange plate of the first coupler and the flange plate of the second coupler as well as the flange plate of the third coupler and the flange plate of the fourth coupler are fixedly connected through screw pins.
4. A method of adjusting a phase of a crankshaft of a multi-point press as claimed in claim 1, wherein: if the multipoint press is a four-point press, after the phase adjustment of the two-point crankshaft is finished, the following steps are carried out:
(1) Installing the adjusted double-point crankshaft into a press, and respectively and coaxially fixing a first gear and a second gear at the left end of the first crankshaft and the right end of the second crankshaft;
(2) Rotating the double-point crankshaft to a crankshaft position which is positioned at a horizontal position and then fixing, installing a third crankshaft in the press, wherein the third crankshaft is parallel to the double-point crankshaft, rotating a crankshaft part of the third crankshaft to the horizontal position and then positioning, and the crankshaft part of the third crankshaft is arranged opposite to the crankshaft part of the first crankshaft in the double-point crankshaft;
(3) Respectively measuring the heights from the crankshaft part of the first crankshaft and the crankshaft part of the third crankshaft to the reference surface, comparing whether the height difference between the two is in the range of 0-0.03 mm, and if so, carrying out the next step; if not, the crankshaft part of the third crankshaft is finely rotated by taking the first crankshaft as a reference, so that the height difference between the crankshaft part and the third crankshaft meets the requirement and then the crankshaft part is positioned;
(4) Mounting a third gear at the end part of the third crankshaft, meshing the third gear with the first gear, repairing a key, and then mounting the key into key grooves of the third gear and the third crankshaft to fix the third gear and the third crankshaft;
(5) And (3) installing a fourth crankshaft parallel to the double-point crankshaft in the press, enabling the crankshaft part of the fourth crankshaft to be arranged opposite to the crankshaft part of the second crankshaft in the double-point crankshaft, then carrying out phase adjustment on the crankshaft part of the fourth crankshaft in the same way as the method in the step (3), installing a fourth gear at the end part of the fourth crankshaft after the adjustment is in place, enabling the fourth gear to be meshed with the second gear, similarly repairing keys, then installing the fourth gear into key grooves of the fourth gear and the fourth crankshaft, enabling the fourth gear and the fourth crankshaft to be fixed, and finally completing the crankshaft phase adjustment of the four-point press.
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| CN114801279A (en) | 2022-07-29 |
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