CN114850521B

CN114850521B - Rotary cutting device for shaft part for automobile power device

Info

Publication number: CN114850521B
Application number: CN202210533948.8A
Authority: CN
Inventors: 李健忠
Original assignee: Chongqing Jingjiang Auto Semi Axle Co ltd
Current assignee: Chongqing Jingjiang Auto Semi Axle Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2023-03-28
Anticipated expiration: 2042-05-17
Also published as: CN114850521A

Abstract

The invention relates to the technical field of shaft part machining, and discloses a shaft part rotating and cutting device for an automobile power device, wherein a stabilizing device comprises an adjusting hydraulic rod, the bottom of the adjusting hydraulic rod is fixedly provided with a balancing weight, the top of the adjusting hydraulic rod is fixedly provided with a top plate, the outer surface of the adjusting hydraulic rod is provided with a liquid guide hole, the liquid guide hole is connected with a liquid guide pipe, and the top of the top plate is fixedly provided with a balancing device.

Description

Rotary cutting device for shaft part for automobile power device

Technical Field

The invention relates to the technical field of shaft part machining, in particular to a shaft part rotary cutting device for an automobile power device.

Background

The crankshaft is a very common shaft component, and is commonly used in engines, such as automobile engines and ocean cargo ship engines, the main power output components of the crankshaft are cranks, each crank mainly comprises a crankshaft main journal, a connecting rod journal, a balance weight, a crank throw and a crank, and the crankshaft main journal and the connecting rod journal are not on the same central line, so that the crankshaft main journal needs to be machined firstly and then the connecting rod journal needs to be machined in the machining process, and when the connecting rod journal is machined, a cutter needs to perform complex feed due to eccentric rotation, so that the crankshaft part rotary cutting device is the most widely used shaft part rotary cutting device at present, and has the advantages of high automation degree, high qualified rate of machined finished products, high production efficiency and the like.

Although the existing shaft part rotary cutting device has many advantages, a certain limitation still exists in the actual use process, due to the fact that the crank is irregular in shape and the connecting rod shaft neck rotates eccentrically, cutter feeding is complex, complex numerical control programming is needed before machining, the needed machine tool is expensive, and the use difficulty is large.

Disclosure of Invention

Aiming at the defects of the existing shaft part rotating and cutting device for the automobile power device in the background technology in the using process, the invention provides the shaft part rotating and cutting device for the automobile power device, which has the advantage that the shaft neck of the connecting rod cannot eccentrically rotate during processing, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an automobile power device is with rotatory cutting device of axle part, includes the lathe main part, the processing chamber has been seted up to one side of lathe main part, the power chamber has been seted up to one side of processing chamber, and the inside fixed mounting in this power chamber has engine I, the one end fixed mounting of I output shaft of engine has the three-jaw chuck, the circular slot has been seted up to the opposite side in processing chamber, and the inside fixed cup joint of this circular slot has the bearing, the inside fixed cup joint of bearing inner circle has thimble seat I, the one end fixed mounting of three-jaw chuck has thimble seat II, the equal fixed mounting in one side of thimble seat I and one side of thimble seat II has adjusting device, one side fixed mounting of adjusting device has the bent axle.

Preferably, the adjusting device comprises a displacement device, stabilizing devices are fixedly sleeved on two sides of the outer surface of the displacement device, the displacement device is connected with the stabilizing devices through a pipeline, and balancing devices are fixedly mounted at the tops of the stabilizing devices.

Preferably, the displacement device includes the displacement frame, the displacement groove has been seted up to one side of displacement frame, the bottom fixed mounting of displacement frame surface has engine II, II output shafts of engine run through the displacement frame and extend to the inside in displacement groove, II output shafts of engine one end are located the inside fixed mounting in displacement groove and have the lead screw, the surface of lead screw has cup jointed the displacement thimble through the screw thread, fixed mounting has flexible hydraulic stem on the position that displacement thimble surface is located the lead screw both sides, the one end of flexible hydraulic stem and the top fixed connection in displacement groove, the top fixed mounting of displacement frame has the catheter, the catheter is linked together with flexible hydraulic stem, the one end and the stabilising arrangement fixed connection of catheter, the both sides fixed mounting of displacement frame has the mount, the fixed cover in inside of mount has connect stabilising arrangement, the one end fixed mounting of lead screw has the ergograph.

Preferably, the stabilizing device comprises an adjusting hydraulic rod, a balancing weight is fixedly mounted at the bottom of the adjusting hydraulic rod, a top plate is fixedly mounted at the top of the adjusting hydraulic rod, a liquid guide hole is formed in the outer surface of the adjusting hydraulic rod and connected with a liquid guide pipe, and a balancing device is fixedly mounted at the top of the top plate.

Preferably, the balancing device comprises a telescopic machine, a connecting plate is fixedly mounted at one end of an output shaft of the telescopic machine, an accommodating cavity regulator is fixedly mounted at the position, close to the two ends, of the bottom of the connecting plate, the accommodating cavity regulator is fixedly mounted at the top of the top plate, and the accommodating cavity regulator is communicated with an inner cavity of the adjusting hydraulic rod.

Preferably, the output shaft end of the dynamometer is connected with the input end of the power machine II in a signal connection mode.

The invention has the following beneficial effects:

1. the screw rod is fixedly arranged at one end of an output shaft of the power machine II in the displacement groove, so that the power machine II drives the screw rod to rotate, the displacement thimble is sleeved on the outer surface of the screw rod through threads, the position of the displacement thimble is adjusted, when the device performs cutting machining on a crankshaft main journal in a crankshaft, the power machine II drives the displacement thimble to move to the lowest position in a drawing, when the power machine I drives the crankshaft to rotate, the rotation center of the crankshaft is the axis of the crankshaft main journal, a machine tool cutter can directly machine the crankshaft main journal in the crankshaft, when the device performs machining on the connecting rod journal in the crankshaft, the power machine II drives the displacement thimble to move in the vertical upward direction in the drawing, the axis of the connecting rod journal instead of machining is positioned on the same central line of the power machine, when the crankshaft is driven to rotate by the power machine I, the rotation center is the axis of a connecting rod in the crankshaft, the machine tool cutter can directly machine the connecting rod journal in the crankshaft, and the problem that when the traditional device performs machining on the crankshaft, the axis of the connecting rod journal only can be set as the axis of the crankshaft, the connecting rod journal can be used in a complicated machining device is greatly reduced, and the problem that the complexity of the machining cost of the device is caused by the complexity of the use of the device is solved.

2. According to the invention, the liquid guide hole is formed in the outer surface of the adjusting hydraulic rod and is connected with the liquid guide pipe, so that the power machine II drives the displacement thimble to move in the vertical upward direction in the drawing, at the moment, the telescopic hydraulic rod is compressed under the extrusion of the displacement thimble to reduce the inner cavity, so that the hydraulic oil in the inner part enters the adjusting hydraulic rod through the liquid guide pipe, and the balancing weight is pushed to move in the vertical downward direction in the drawing, therefore, when the centrifugal force is improved due to the deviation of the axes of the displacement thimble and the crankshaft and the rotation center caused by the adjustment of the position of the crankshaft by the processing connecting rod journal, the balancing weight can be simultaneously far away from the rotation center to improve the centrifugal force, and the centrifugal force generated by the displacement thimble and the crankshaft and the balancing weight are positioned at two sides of the rotation center to offset each other, the problem of the reduction of the processing precision caused by the large vibration generated by the failure of the dynamic balance after the position adjustment of the crankshaft of the device is avoided, and the stability of the device in the processing process is improved.

3. The force measuring device is fixedly arranged at one end of the screw rod, so that the gravity of the crankshaft acts on the screw rod through threads, the output shaft end of the force measuring device is connected with the input end of the power machine II in a signal connection mode, the inner cavity capacity of the cavity regulator is controlled by the telescopic machine, hydraulic oil in the regulating hydraulic rod flows into the cavity regulator, the distance between the balancing weight and the rotation axis is reduced, when a connecting rod journal is gradually formed in the cutting process, the total weight of the crankshaft is continuously reduced, the generated centrifugal force is continuously reduced, the mass of the balancing weight is unchanged, the generated centrifugal force cannot be changed, the distance between the balancing weight and the rotation center is reduced, the centrifugal force generated by the balancing weight is reduced, the phenomenon that the machining precision is reduced due to the fact that the centrifugal force generated by the balancing weight is gradually larger than the centrifugal force generated by the crankshaft and the displacement thimble in the machining process is avoided, and the reliability of the device is improved.

4. According to the invention, the cavity regulator is communicated with the inner cavity of the adjusting hydraulic rod, so that when a crankshaft blank with smaller mass is processed, the crankshaft blank can be pre-adjusted through the balancing device, and hydraulic oil in the adjusting hydraulic rod and the telescopic hydraulic rod is partially extracted before operation, so that the distance between the crankshaft blank and the axial line of the three-jaw chuck is reduced during adjustment of the balancing weight, the problem that the crankshaft blank cannot be normally balanced due to overlarge generated centrifugal force is avoided, and the practicability of the device is improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a schematic top view of the structure of the present invention;

FIG. 4 is a schematic cross-sectional view taken along the direction A in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of a structural adjustment device of the present invention;

FIG. 6 is a schematic view of a structural displacement device of the present invention;

FIG. 7 is a front view of the structure displacement apparatus of the present invention;

FIG. 8 is a schematic cross-sectional view taken along the direction B in FIG. 7 according to the present invention;

FIG. 9 is a schematic cross-sectional view taken along the line C in FIG. 8 according to the present invention;

FIG. 10 is a schematic view of a structural stabilizing device and balancing device of the present invention;

FIG. 11 is a front view of the structural stabilizing device and balancing device of the present invention;

FIG. 12 is a schematic cross-sectional view taken along direction D in FIG. 11 according to the present invention;

FIG. 13 is a schematic cross-sectional view taken along direction E in FIG. 12.

In the figure: 1. a machine tool main body; 2. a processing cavity; 3. a power machine I; 4. a three-jaw chuck; 5. a bearing; 6. a thimble seat I; 7. a thimble seat II; 8. an adjustment device; 81. a displacement device; 811. a displacement frame; 812. a displacement slot; 813. a power machine II; 814. a screw rod; 815. displacing the thimble; 816. a telescopic hydraulic rod; 817. a catheter; 818. a fixed mount; 819. a force measuring device; 82. a stabilizing device; 821. adjusting a hydraulic rod; 822. a balancing weight; 823. a top plate; 824. a drain hole; 83. a balancing device; 831. a compressor; 832. connecting plates; 833. a chamber conditioner; 9. a crankshaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a shaft part rotary cutting device for an automobile power device comprises a machine tool main body 1, a processing cavity 2 is formed in one side of the machine tool main body 1, a power cavity is formed in one side of the processing cavity 2, a power machine I3 is fixedly installed in the power cavity, a three-jaw chuck 4 is fixedly installed at one end of an output shaft of the power machine I3, a circular groove is formed in the other side of the processing cavity 2, a bearing 5 is fixedly sleeved in the circular groove, a thimble seat I6 is fixedly sleeved in the inner ring of the bearing 5, a thimble seat II 7 is fixedly installed at one end of the three-jaw chuck 4, an adjusting device 8 is fixedly installed on one side of the thimble seat I6 and one side of the thimble seat II 7, and a crankshaft 9 is fixedly installed on one side of the adjusting device 8.

Referring to fig. 5, the adjusting device 8 includes a displacement device 81, stabilizing devices 82 are fixedly secured to both sides of the outer surface of the displacement device 81, the displacement device 81 is connected to the stabilizing devices 82 through a pipe, and a balancing device 83 is fixedly secured to the top of the stabilizing devices 82.

Referring to fig. 6-9, the displacement device 81 includes a displacement frame 811, a displacement slot 812 is formed on one side of the displacement frame 811, a power machine ii 813 is fixedly mounted at the bottom of the outer surface of the displacement frame 811, an output shaft of the power machine ii 813 penetrates through the displacement frame 811 and extends into the displacement slot 812, a screw 814 is fixedly mounted at one end of the output shaft of the power machine ii 813 inside the displacement slot 812, so that the screw 814 is driven by the power machine ii 813 to rotate, at this time, a displacement thimble 815 is sleeved on the outer surface of the screw 814 through a thread, so as to adjust the position of the displacement thimble 815, when the device performs cutting processing on a crankshaft main journal in the crankshaft 9, at this time, the power machine ii 813 drives the displacement thimble 815 to move to the lowest position in fig. 8, at this time, when the power machine i 3 drives the crankshaft 9 to rotate, at this time, the rotation center of the crankshaft 9 is the axis of the crankshaft main journal, at the moment, a machine tool cutter can directly machine a main journal of a crankshaft in the crankshaft 9, when the device machines a connecting rod journal in the crankshaft 9, the power machine II 813 drives the displacement thimble 815 to move in the vertical upward direction in figure 8, so that the axis of the connecting rod journal to be machined instead and the axis of the three-jaw chuck 4 are positioned on the same central line, when the power machine I3 drives the crankshaft 9 to rotate, the rotation center is the axis of the connecting rod journal in the crankshaft 9, the machine tool cutter can directly machine the connecting rod journal in the crankshaft 9, and therefore the problems that when the crankshaft is fixed in the traditional equipment, only the axis of the main journal can be set as the rotation center, a complex feed program is required to machine the shaft surface when the connecting rod journal is machined, the machine tool structure is complex and the machine tool is difficult to use are solved, the practicability of the device is improved, the complexity and the use cost of the device are reduced, a displacement thimble 815 is sleeved on the outer surface of the lead screw 814 through threads, a telescopic hydraulic rod 816 is fixedly mounted on the positions, located on the two sides of the lead screw 814, of the outer surface of the displacement thimble 815, one end of the telescopic hydraulic rod 816 is fixedly connected with the top of the displacement groove 812, a catheter 817 is fixedly mounted at the top of the displacement frame 811, the catheter 817 is communicated with the telescopic hydraulic rod 816, one end of the catheter 817 is fixedly connected with the stabilizing device 82, a fixing frame 818 is fixedly mounted on the two sides of the displacement frame 811, the stabilizing device 82 is fixedly sleeved inside the fixing frame 818, and a force measuring device 819 is fixedly mounted at one end of the lead screw 814, so that the gravity of the crankshaft 9 can act on the lead screw 814 through threads.

Referring to fig. 10-13, the stabilizing device 82 includes a hydraulic adjusting rod 821, a weight block 822 is fixedly mounted at the bottom of the hydraulic adjusting rod 821, a top plate 823 is fixedly mounted at the top of the hydraulic adjusting rod 821, a liquid guiding hole 824 is formed in the outer surface of the hydraulic adjusting rod 821, and the liquid guiding hole 824 is connected with a liquid guiding tube 817, so that a power machine ii 813 moves a driving displacement thimble 815 in the vertical upward direction in fig. 8, at this time, the telescopic hydraulic rod 816 contracts under the extrusion of the displacement thimble 815 and reduces an inner cavity, so that the internal hydraulic oil enters the hydraulic adjusting rod 821 through the liquid guiding tube 817 and pushes the weight block 822 to move in the vertical downward direction in fig. 11, thereby achieving the purpose that when the position of the crankshaft 9 is adjusted by a processing connecting rod journal to cause the centrifugal force to be increased due to the axial line of the displacement thimble 815 and the crankshaft 9 deviating from the rotation center, the weight block 822 can be simultaneously away from the rotation center to increase the rotation center, the centrifugal force generated by the displacement thimble 815 and the crankshaft 9 and the weight block 822 are located at two sides of the rotation center to cancel each other, thereby avoiding the problem that the top plate 83 is mounted in the processing device that the top plate 83 is lowered due to the vibration failure caused by the failure of the device.

Referring to fig. 10-13, the balancing device 83 includes a telescopic machine 831, a connecting plate 832 is fixedly installed at one end of an output shaft of the telescopic machine 831, a cavity adjuster 833 is fixedly installed at a position near two ends of the bottom of the connecting plate 832, the cavity adjuster 833 is fixedly installed at the top of a top plate 823, and the cavity adjuster 833 is communicated with an inner cavity of the adjusting hydraulic rod 821.

Referring to fig. 9 to 13, an output shaft end of the force measuring device 819 is connected to an input end of the power machine ii 813 by a signal connection manner, so that the telescopic machine 831 controls an inner cavity capacity of the cavity adjuster 833, hydraulic oil in the adjusting hydraulic rod 821 flows into the cavity adjuster 833 to reduce a distance between the weight 822 and a rotation axis, when a connecting rod journal is gradually formed in a cutting process, a total weight of the crankshaft 9 is continuously reduced, a generated centrifugal force is continuously reduced, a mass of the weight 822 is unchanged, and a magnitude of the generated centrifugal force is not changed, and at this time, by reducing a distance between the weight 822 and a rotation center, the centrifugal force generated by the weight 822 is reduced, thereby avoiding a situation that the centrifugal force generated by the weight 822 is gradually greater than the centrifugal force generated by the crankshaft 9 and the displacement thimble 815 to cause a vibration to cause a reduction in the machining precision, and improving reliability of the device.

The using method of the invention is as follows:

in the using process, the power machine II 813 drives the screw rod 814 to rotate so as to adjust the position of the displacement thimble 815, when the device performs cutting machining on a crankshaft main journal in the crankshaft 9, at the moment, the power machine II 813 drives the displacement thimble 815 to move to the lowest position in fig. 8, at the moment, the power machine I3 drives the crankshaft 9 to rotate, the rotation center of the crankshaft 9 is the axis of the crankshaft main journal, at the moment, a machine tool can directly machine the crankshaft main journal in the crankshaft 9, when the device performs machining on a connecting rod journal in the crankshaft 9, the power machine II 813 drives the displacement thimble 815 to move along the vertical upward direction in fig. 8, so that the axis of the connecting rod journal to be machined and the axis of the three-jaw chuck 4 are positioned on the same central line, at the moment, when the power machine I3 drives the crankshaft 9 to rotate, the rotation center is the axis of the connecting rod journal in the crankshaft 9, at this time, a machine tool cutter can directly process a connecting rod journal in the crankshaft 9, the power machine II 813 drives the displacement thimble 815 to move in the vertical upward direction in fig. 8, at this time, the telescopic hydraulic rod 816 contracts under the extrusion of the displacement thimble 815 and reduces an inner cavity, so that the internal hydraulic oil enters the inside of the regulating hydraulic rod 821 through the liquid guide pipe 817 to push the counterweight 822 to move in the vertical downward direction in fig. 11, and therefore when the device adjusts the position of the crankshaft 9 due to the processing of the connecting rod journal, the axes of the displacement thimble 815 and the crankshaft 9 deviate from the rotation center to cause the centrifugal force to be improved, the counterweight 822 can be simultaneously far away from the rotation center to improve the centrifugal force, the displacement thimble 815, the crankshaft 9 and the counterweight 822 are positioned at two sides of the rotation center, so that the centrifugal forces generated by the displacement thimble 815, the crankshaft 815 and the counterweight 822 are mutually offset, and the compressor 831 controls the capacity of the cavity regulator 833, thereby the hydraulic oil that makes and adjust hydraulic stem 821 inside flows into and holds the chamber regulator 833 in order to reduce the distance between balancing weight 822 and the rotation axis, make when the cutting in-process of going on, form gradually when the connecting rod journal, the gross weight of bent axle 9 also constantly reduces this moment, produced centrifugal force also constantly reduces, and the quality of balancing weight 822 is unchangeable, produced centrifugal force size also can not change, through reducing the distance between balancing weight 822 and the center of rotation this moment, reduce the centrifugal force that balancing weight 822 produced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. The utility model provides an automobile power device is with rotatory cutting device of axle part, includes lathe main part (1), its characterized in that: the machine tool comprises a machine tool body (1), a machining cavity (2) is formed in one side of the machine tool body (1), a power cavity is formed in one side of the machining cavity (2), a power machine I (3) is fixedly installed in the power cavity, a three-jaw chuck (4) is fixedly installed at one end of an output shaft of the power machine I (3), a circular groove is formed in the other side of the machining cavity (2), a bearing (5) is fixedly sleeved in the circular groove, a thimble seat I (6) is fixedly sleeved in the inner ring of the bearing (5), a thimble seat II (7) is fixedly installed at one end of the three-jaw chuck (4), an adjusting device (8) is fixedly installed on one side of the thimble seat I (6) and one side of the thimble seat II (7) respectively, a crankshaft (9) is fixedly installed on one side of the adjusting device (8), the adjusting device (8) comprises a displacement device (81), stabilizing devices (82) are fixedly sleeved on two sides of the outer surface of the displacement device (81), the stabilizing devices (81) are connected with the stabilizing devices (82) through pipelines, a balancing device (83) is fixedly installed on the top of the stabilizing device (82), a displacement frame (811) comprises a displacement frame (811) and a displacement frame (813) fixed on one side of the displacement frame (811), and a displacement frame (813) is installed on one side of the displacement frame (813) and a displacement frame (813) is installed on the outer surface, an output shaft of the power machine II (813) penetrates through the displacement frame (811) and extends to the inside of the displacement groove (812), a screw rod (814) is fixedly installed at one end of the output shaft of the power machine II (813) and located inside the displacement groove (812), a displacement thimble (815) is sleeved on the outer surface of the screw rod (814) through threads, a telescopic hydraulic rod (816) is fixedly installed at the position, located on the two sides of the screw rod (814), of the outer surface of the displacement thimble (815), one end of the telescopic hydraulic rod (816) is fixedly connected with the top of the displacement groove (812), a liquid guide pipe (817) is fixedly installed at the top of the displacement frame (811), the liquid guide pipe (817) is communicated with the telescopic hydraulic rod (816), one end of the liquid guide pipe (817) is fixedly connected with the stabilizing device (82), fixing frames (818) are fixedly installed on the two sides of the displacement frame (811), a stabilizing device (82) is fixedly sleeved inside the fixing frame (818), and a force measuring device (819) is fixedly installed at one end of the screw rod (814).

2. The rotary cutting apparatus for shaft parts for an automotive power unit as set forth in claim 1, characterized in that: the stabilizing device (82) comprises an adjusting hydraulic rod (821), a balancing weight (822) is fixedly mounted at the bottom of the adjusting hydraulic rod (821), a top plate (823) is fixedly mounted at the top of the adjusting hydraulic rod (821), a liquid guide hole (824) is formed in the outer surface of the adjusting hydraulic rod (821), the liquid guide hole (824) is connected with a liquid guide pipe (817), and the balancing device (83) is fixedly mounted at the top of the top plate (823).

3. The rotary cutting apparatus for shaft parts for an automotive power unit as set forth in claim 2, characterized in that: balancing unit (83) are including elongator (831), the one end fixed mounting of elongator (831) output shaft has even board (832), even fixed mounting has on the position that board (832) bottom is close to both ends and holds chamber regulator (833), hold the top of chamber regulator (833) fixed mounting in roof (823), the inner chamber that holds chamber regulator (833) and regulation hydrops pole (821) is linked together.

4. The rotary cutting apparatus for shaft parts for an automotive power unit as set forth in claim 1, characterized in that: the output shaft end of the dynamometer (819) is connected with the input end of the power machine II (813) in a signal connection mode.