CN114961989B - Engine crankshaft disc headstock and automatic adjusting method thereof - Google Patents
Engine crankshaft disc headstock and automatic adjusting method thereof Download PDFInfo
- Publication number
- CN114961989B CN114961989B CN202110203007.3A CN202110203007A CN114961989B CN 114961989 B CN114961989 B CN 114961989B CN 202110203007 A CN202110203007 A CN 202110203007A CN 114961989 B CN114961989 B CN 114961989B
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- jigger
- disc
- pins
- seat
- block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides an engine crankshaft disc head and an automatic adjusting method thereof, wherein the disc head comprises a disc head seat and disc pins, at least two disc pins protrude out of one side of the disc head seat and can move in the radial direction or the axial direction relative to the disc head seat so as to change the distance between the disc pins protruding out of the disc head seat. The invention automatically realizes the matching of the disc head based on the structure of the adjusting machine without adding an adapter, thereby saving manual intervention and recycling of an adapter tool; the only external driving is the positioning of the clutch blocks, but the operation is used during the mold changing, so that the stability of the structure is greatly improved; the whole disc head does not need to be replaced, so that the equipment space is greatly reduced; the invention can be widely applied to the high-flexibility assembly line of the current engine, the end face structures of the crankshafts of the engines with different displacement are different, and the headstock of the crankshaft can be automatically switched based on the engine model, so that the multi-model automatic assembly is realized.
Description
Technical Field
The invention relates to the technical field of engines of vehicles, in particular to an engine crankshaft disc head and an automatic adjusting method thereof.
Background
In the engine assembly process, process monitoring is added at different stages, so that process anomalies such as component size anomalies, quality defects, artificial anomaly input and equipment problems can be effectively identified, and compared with a final detection method in the engine offline, the process detection can identify the engine assembly problems from the early stage, so that the detection precision is improved, and the engine repair cost is greatly reduced.
Based on the background, the modern engine assembly line is additionally provided with process detection technologies such as rotation moment detection, valve clearance detection and the like, and the processes all need to jigger a crankshaft to realize detection of different positions. In addition, with the increasing labor costs and the continuing demands of ergonomics, the automation rate has been used as a new indicator of the assembly line (e.g., automatic tightening of the tie rod) as an important parameter for production line planning. The need for crankshaft jiggers is also increasing.
The current automatic equipment bent axle jigger head only can be applicable to a bent axle structure, when the mixed production of multiple model is related to, need increase adapter or change jigger head, solve the problem of multimachine jigger, this has improved the manual input cost greatly, has also increased the complexity and the occupation of land space of equipment, seriously restricts the automation rate of whole line.
In view of the above, the present invention provides an engine crankshaft disc head and an automatic adjustment method thereof to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide an engine crankshaft disc head and an automatic adjusting method thereof, which can solve the problem that multiple engine crankshaft disc heads cannot be compatible with different structures and achieve the purposes of low cost and high stability.
In order to achieve the above purpose, the invention provides an engine crankshaft disc head, which comprises a disc head seat and a disc pin,
wherein at least two jigger pins protrude from one side of the jigger seat and are movable in a radial or axial direction with respect to the jigger seat to vary a distance between the jigger pins protruding from the jigger seat.
The engine crankshaft disc headstock further comprises a disc turning pin installation block used for installing a disc turning pin, the disc turning pin installation block is connected with a screw rod, and the screw rod is driven by a servo motor so as to drive the disc turning pin to move along the radial direction of the disc turning headstock.
The engine crankshaft disc headstock further comprises a disc pin installation block used for installing a disc pin, an air cylinder is installed on the other side of the disc pin seat, and the air cylinder is connected with the disc pin installation block so as to drive the disc pin to move along the radial direction of the disc pin seat.
The engine crankshaft disc headstock, wherein, the opposite side of disc headstock is provided with the asymmetric link that is connected with the clutch block, the clutch block is driven by the motor to drive disc headstock rotates.
The engine crankshaft disc headstock is characterized in that two pairs of disc pins are oppositely arranged on one side of the disc headstock in pairs, the disc pins can move along the axial direction of the disc headstock, and the relative distance of one pair of disc pins is different from the relative distance of the other pair of disc pins.
The engine crankshaft disc headstock, wherein each disc turning pin is connected with a screw rod, and the screw rods are driven by a servo motor.
And each jigger pin is independently driven by a cylinder.
The engine crankshaft disc headstock, wherein, still include molded line piece, the opposite side of disc headstock is provided with cylindrical cavity, one side of molded line piece with the disc turning pin connection, the opposite side of molded line piece is used for being connected with the separation and reunion piece and can rotate under the drive of separation and reunion piece, molded line piece with the higher convex part of relative arrangement and the lower concave part of relative setting have with the one side of disc turning pin connection.
The engine crankshaft disc headstock, wherein, the opposite side of molded line piece is provided with the asymmetric link that is connected with the clutch block, and this clutch block is driven by the motor.
The invention also provides an automatic adjusting method of the engine crankshaft disc headstock, wherein the relative positions of the disc pins on the disc headstock are adjusted along the radial direction or the axial direction, so that the engine crankshafts with different specifications are adapted.
The invention has the beneficial effects that:
(1) Based on the structure of the adjusting machine, the matching of the machine head is automatically realized, an adapter is not required to be added, manual intervention and the cyclic use of an adapter tool can be omitted;
(2) The only external driving is the positioning of the clutch blocks, but the operation is used during the mold changing, so that the stability of the structure is greatly improved;
(3) The whole disc head does not need to be replaced, so that the equipment space is greatly reduced;
(4) The invention can be widely applied to the high-flexibility assembly line of the current engine, the end face structures of the crankshafts of the engines with different displacement are different, and the headstock of the crankshaft can be automatically switched based on the engine model, so that the multi-model automatic assembly is realized.
Drawings
Fig. 1 is a perspective view of one side of a jigger head according to a first embodiment of the invention;
fig. 2 is a perspective view of the other side of the jigger head in accordance with a first embodiment of the invention;
FIG. 3 is a schematic view of an asymmetrical connection of a locomotive in accordance with a first embodiment of the present invention;
fig. 4 is a perspective view of one side of a jigger head according to a second embodiment of the invention;
fig. 5 is a longitudinal cross-sectional view of a disc head according to a second embodiment of the present invention;
fig. 6 is a longitudinal cross-sectional view of a jigger head (without a wire block) in accordance with a second embodiment of the invention;
fig. 7 is a perspective view of a molded line block according to a second embodiment of the present invention;
FIG. 8 is a lead screw drive schematic according to a second embodiment of the invention;
FIG. 9 is a perspective view of a clutch block according to the present invention;
fig. 10 is a longitudinal sectional view of a clutch block according to the present invention.
Detailed Description
In order to clearly illustrate the inventive content of the present invention, the present invention will be described below with reference to examples.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "horizontal", "vertical", "top", "bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With the background that the requirements of multi-machine type mixed production flexible assembly lines are continuously improved, low-cost and high-stability requirements are provided for an automatic type changing method of a crank jigger, so that the engine crank jigger head and the automatic adjusting method thereof are provided, and the automation rate of the assembly lines and the stability of the production lines are greatly improved.
First embodiment
A first embodiment of the present invention provides a radially automatically adjusted engine crankshaft disc head, as shown in fig. 1 and 2, which mainly includes: a jigger seat 11, jigger pins 12, and jigger pin mounting blocks 13.
The disc head seat 11 is disc-shaped, one side of the disc head seat 11 is provided with two disc pin mounting blocks 13 which are arranged oppositely and can move along the radial direction of the disc head seat 11, the two disc pins 12 are respectively arranged on the two disc pin mounting blocks 13, and the relative distance between the two disc pin mounting blocks 13 is adjusted, so that the relative distance between the two disc pins 12 is adjusted to adapt to engine crankshafts with different specifications. In use, the relative distance of the two jigger pins 12 is adjusted according to the spacing between the jigger holes on the engine crankshaft, and the jigger pins 12 are inserted into the jigger holes and positioned so that the crankshaft rotates under the drive of the jigger head.
A driving source is mounted on the other side of the disc head holder 11. In a preferred embodiment, the jigger pin mounting blocks 13 are driven by a servo motor. Specifically, the two jigger pin mounting blocks 13 are respectively connected to a screw 14, and the screw 14 is driven by a servo motor. When the servo motor drives the screw rod 14 to rotate and further drives the jigger pin mounting block 13 to move to a preset position on the screw rod 14 along the radial direction of the jigger seat 11, the servo motor stops rotating, so that the jigger pin mounting block 13 and the jigger pin 12 can be fixed at the preset position. The servo motor is mounted on the disc head seat 11 and is provided with brushes along with synchronous rotation of the lead screw so as to meet the input of a power supply in the rotation process. Preferably, a bevel gear is arranged in the jigger pin mounting block 13 so as to complete 90-degree reversing driving.
In another preferred embodiment, the drive source is a pneumatic source. Specifically, two cylinders are mounted on the other side of the disc head holder 11, the two cylinders are respectively connected with the two disc pin mounting blocks 13, and the other side of the disc head holder 11 slides back and forth along the radial direction of the disc head holder 11 under the driving of the cylinders. In addition, a pneumatic rotary joint is arranged at the joint of the cylinder and the jigger pin mounting block 13 so as to ensure the connection of a static air source input pipe and a rotary disc headstock.
Furthermore, as shown in fig. 3, the other side of the engine crankshaft head, which is automatically adjusted in the radial direction, is provided with an asymmetric connection end 15 connected to a clutch block (not shown in the drawing) driven by a motor to thereby drive the head to rotate. The asymmetric connecting end 15 is a cylindrical structure extending from the other side of the disc head seat, the outer circumference of the cylindrical structure is a cylinder, a plurality of asymmetrically arranged tooth parts 16 are arranged in the cylindrical structure, and the tooth parts 16 are used for being connected with the long grooves of the clutch blocks. Due to the fact that the plurality of tooth parts 16 are arranged asymmetrically, the position uniqueness of the disc head can be guaranteed at the same time when the clutch block is connected with the tooth parts 16.
Second embodiment
A second embodiment of the present invention provides an engine crank head with automatic axial adjustment, as shown in fig. 4 to 8, which mainly includes: a jigger seat 21, jigger pins 22, and jigger pin mounting blocks 23.
Wherein, the disc head seat 21 is disc-shaped, and one side of the disc head seat is provided with at least two disc pin mounting blocks 23 which are arranged oppositely and can move along the axial direction of the disc head seat 21. Specifically, as shown in fig. 4, two pairs of jigger pin mounting blocks 23 are disposed in a pair on one side of the jigger seat 21, and the relative distance of one pair of jigger pin mounting blocks 23 is different from the relative distance of the other pair of jigger pin mounting blocks 23 to adapt to engine crankshafts of different specifications. For convenience of structural illustration, the structure of a pair of jigger pins and jigger pin mounting blocks thereof is omitted in fig. 4.
One jigger pin 22 is provided on each jigger pin mounting block 23. In use, one pair of jigger pin mounting blocks 23 is selectively extended and inserted into the jigger holes according to the specification of the engine crankshaft, and the other pair of jigger pin mounting blocks 23 is retracted according to the interval between the jigger holes on the engine crankshaft, so that the crankshaft is rotated under the drive of the jigger head.
In one embodiment, as shown in fig. 6, each jigger pin mounting block 23 is connected with a screw 24, the screw 24 is driven by a servo motor (not shown in the figure), the jigger pin mounting blocks 23 can be driven to move in the axial direction through the rotation of the screw, the adjustment of different jigger pins can be realized, and the sliding connection pair can be added by the cooperation of the base and the screw. The power supply of the servo motor can adopt an electric brush structure, and the input of the power supply in the rotating process is met. Wherein the two jigger pins in the cross-sectional view shown in fig. 6 are adjacently arranged jigger pins, not oppositely arranged jigger pins.
As shown in fig. 8, when only a pair of jigger pins 22 are provided on the jigger seat 21, the outer side of the other side of the jigger seat 21 is driven by the jigger motor to rotate, and the lead screw 24 is dragged to rotate, thereby converting the axial feeding motion of the jigger pins 22.
The jigger pin mounting blocks 23 may be driven by cylinders alone to perform axial movement.
In another embodiment, as shown in fig. 5 and 7, the other side of the disc head holder 21 is provided with a cylindrical cavity, one side of the molded line block 25 is connected with the disc pin mounting block 23, and the other side of the molded line block 25 is connected with the clutch block 26. Specifically, a side of the molded line block 25 to which the jigger pin mounting block 23 is connected has a streamlined uneven surface (fig. 7), and specifically, the uneven side of the molded line block 25 specifically has relatively arranged relatively high convex portions and relatively arranged relatively low concave portions. By the rotation of the molded line block 25 in the axial direction, the convex portion of the molded line block 25 corresponds to one pair of jigger pins 22, the concave portion thereof corresponds to the other pair of jigger pins 22, the jigger pin 22 corresponding to the convex portion is projected from the jigger seat 21 and is used for connection with the engine crankshaft, and the jigger pin 22 corresponding to the concave portion is retracted inside the jigger seat 21, thereby avoiding interference with the rotation of the engine crankshaft. In this embodiment, since the cylinder or the servo motor is omitted, the structure is more compact and the assembly is convenient.
Furthermore, in the preferred embodiment, the jigger pin mounting block 23, i.e., the jigger pin 22 is mounted in the pin hole of the jigger seat 21, is designed in a nail type structure, the head of the jigger pin is in contact with the molded line block 25, and a spring (not shown) may be added between the jigger seat 21 and the jigger pin 22, thereby generating a pushing force for pushing the jigger pin 22 to retract into the jigger seat 21.
Finally, as shown in fig. 9 and 10, the other side of the molded line block 25 of the engine crankshaft disc head which is automatically adjusted in the axial direction is provided with an asymmetric connecting end 27 connected with a clutch block 26, and the clutch block 26 is driven by a motor so as to drive the disc head to rotate. The asymmetric connecting end 27 is a cylindrical structure extending from the other side of the disc head seat, the outer circumference of the cylindrical structure is a cylinder, a plurality of asymmetrically arranged tooth parts 28 are arranged in the cylindrical structure, and the tooth parts 28 are used for being connected with the long grooves of the clutch blocks. Due to the plurality of asymmetrically arranged teeth 28, the position uniqueness of the disc head can be ensured at the same time when the clutch block is connected with the teeth 28. When the die change is needed, the cylinder is used for extending the locking shaft above the station and extending into the strip groove, and the inherent forward and backward motion servo motion in the direction of the turning shaft of the equipment is used for changing the position of the clutch block, so that the automatic die change is realized. The clutch block is internally provided with different reference circle engagement structures for engaging one end with the disc head seat 21 and the other end with the molded line block 25.
The relative movement of the disc head seat 21 and the molded line block 25 realizes locking and relative movement through the clutch block 26, namely when the clutch block is disengaged from the molded line block, the molded line block and the disc head seat can independently move, and the space position of a disc pin can be changed by dragging the rotation of the disc head seat through a servo motor, so that automatic mold changing is realized; after the clutch block is meshed with the molded line block, the relative rotation of the disc headstock and the molded line block is locked, so that the normal crankshaft disc function can be realized.
Preferably, the jigger servo motors are all provided with absolute encoders, so that asymmetric structures, such as meshing of a jigger seat and a clutch block, and meshing of a clutch block and a molded line block, are designed at each meshing position to ensure the uniqueness of jiggers.
Still preferably, the invention also can manually add the adapter and design the loop adapter tool for recycling. One end of the adapter is matched with the crankshaft, the other end of the adapter is made into a universal structure to be matched with the jigger head, and when each model reaches the front station of the jigger, the adapter corresponding to the model is manually installed on the crankshaft and enters the testing station along with the engine. After the measuring is finished and the station is set aside, the adapter is disassembled and returned to the installation station.
In addition, the invention also provides an automatic adjusting method for the engine crankshaft disc head, which mainly adjusts the relative positions of disc pins on the disc head seat so as to adapt to engine crankshafts with different specifications.
In summary, the beneficial effects of the invention are as follows:
(1) Based on the structure of the adjusting machine, the matching of the machine head is automatically realized, an adapter is not required to be added, manual intervention and the cyclic use of an adapter tool can be omitted;
(2) The only external driving is the positioning of the clutch blocks, but the operation is used during the mold changing, so that the stability of the structure is greatly improved;
(3) The whole disc head does not need to be replaced, so that the equipment space is greatly reduced;
(4) The invention can be widely applied to the high-flexibility assembly line of the current engine, the end face structures of the crankshafts of the engines with different displacement are different, and the headstock of the crankshaft can be automatically switched based on the engine model, so that the multi-model automatic assembly is realized.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (7)
1. The engine crankshaft disc headstock is characterized by comprising a disc headstock, a disc turning pin and a molded line block;
two pairs of jigger pins are oppositely arranged on one side of the jigger seat in pairs, the jigger pins protrude out of one side of the jigger seat, and the jigger pins can move in the radial direction or the axial direction relative to the jigger seat so as to change the distance between the jigger pins protruding out of the jigger seat; wherein the relative distance of one pair of jigger pins is different from the relative distance of the other pair of jigger pins;
the other side of the disc lathe head seat is provided with a cylindrical cavity, one side of the molded line block is connected with the disc lathe pin, the other side of the molded line block is connected with the clutch block and can rotate under the drive of the clutch block, and one side of the molded line block connected with the disc lathe pin is provided with a relatively arranged higher convex part and a relatively arranged lower concave part.
2. The engine crankshaft disc head of claim 1, further comprising a jigger pin mounting block for mounting jigger pins, the jigger pin mounting block being coupled to a lead screw driven by a servo motor to drive radial movement of the jigger pins in the jigger head seat.
3. The engine crankshaft of claim 1, further comprising a jigger pin mounting block for mounting jigger pins, a cylinder mounted on the other side of the jigger seat, the cylinder being connected to the jigger pin mounting block so as to drive the jigger pins to move in a radial direction of the jigger seat.
4. The engine crankshaft disc head according to claim 1, wherein each jigger pin is connected with a screw, the screw being driven by a servo motor.
5. The engine crankshaft of claim 1, wherein each jigger pin is individually driven by a cylinder.
6. The engine crankshaft head according to any one of claims 1 to 5, wherein the other side of the profile block is provided with an asymmetric connection end connected with a clutch block driven by an electric motor.
7. An automatic adjustment method for the engine crankshaft disc head according to any one of claims 1 to 6, characterized in that the relative positions of disc pins on the disc head seat are adjusted in the radial direction or in the axial direction so as to adapt to engine crankshafts of different specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203007.3A CN114961989B (en) | 2021-02-23 | 2021-02-23 | Engine crankshaft disc headstock and automatic adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203007.3A CN114961989B (en) | 2021-02-23 | 2021-02-23 | Engine crankshaft disc headstock and automatic adjusting method thereof |
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| Publication Number | Publication Date |
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| CN114961989A CN114961989A (en) | 2022-08-30 |
| CN114961989B true CN114961989B (en) | 2023-07-25 |
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| CN202110203007.3A Active CN114961989B (en) | 2021-02-23 | 2021-02-23 | Engine crankshaft disc headstock and automatic adjusting method thereof |
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