CN113217554B - Automobile swing arm production equipment based on roll forging process and production process thereof - Google Patents
Automobile swing arm production equipment based on roll forging process and production process thereof Download PDFInfo
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- CN113217554B CN113217554B CN202110498156.7A CN202110498156A CN113217554B CN 113217554 B CN113217554 B CN 113217554B CN 202110498156 A CN202110498156 A CN 202110498156A CN 113217554 B CN113217554 B CN 113217554B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/14—Fluid pressure control
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides automobile swing arm production equipment based on a roll forging process, which comprises a clutch and a clutch air supply switching part, wherein the clutch air supply switching part is arranged on the outer side of an end cover and used for supplying compressed air to a conical annular cavity channel, the air supply switching part at least comprises two air supply branches, the air supply branches supply the compressed air to the edge of a piston, the air supply branches are symmetrically arranged relative to the central axis of the end cover, the air supply switching part supplies air to the conical annular cavity channel through the air supply branches to preposition the piston, so that the piston can be pushed to a friction disc in a stable and stable prepositioned state, a first friction ring is uniformly contacted with a second friction ring, the abrasion of the clutch piston and the friction disc is reduced, meanwhile, the vibration of the first friction ring and the second friction ring of the clutch during meshing is eliminated, the extrusion forming quality of the automobile swing arm is improved, and the quality of the product is improved.
Description
Technical Field
The invention relates to a roll forging device, in particular to a roll forging device for producing an automobile swing arm and a production method thereof.
Background
The roll forging machine is mainly used for the preforging of a forged piece, and may be used for the finish forging, and the roll forging deformation is substantially the rolling extension of a billet, and the cross section of the billet part becomes small and the surface width increases. When the section deformation is large, the rolling is completed through multiple times of rolling. The process design is mainly to reasonably determine the rolling reduction, the broadening amount and the extension deformation of the roll forging in each process step. They depend on the size of the roll diameter, the shape and size of the hole pattern, the temperature of the blank, cooling lubrication and other deformation conditions. One end of the blank is clamped by a clamp, deformed and withdrawn under the rolling of a first pass of the sector die, then fed in a die-free space of a lower pass of the sector die, rolled again for deformation and withdrawn, and gradually formed through multiple passes of rolling according to the deformation requirement to obtain the required formed workpiece.
Taking the production of automobile swing arms as an example, the most important process is roll forging, and the purpose of roll forging is to obtain a desired shape, change the structure of metal and improve the mechanical properties of the metal. The roll forging machine on the market at present comprises a roll forging machine main body, an accessory facility feeder, a buffer, a mechanical arm and a foundation.
Taking CN212469598U as an example of a clutch brake control mechanism of a roll forging machine for forging an automobile engine connecting rod, the clutch brake control mechanism of the roll forging machine for forging the automobile engine connecting rod comprises: the forging device comprises a motor, a high-speed shaft, a flywheel, a clutch, a gearwheel, a long-tooth gear, two forging rollers and a brake, wherein the two forging rollers which are arranged up and down are used for fixing a roll forging die, the forging rollers are arranged in sliding bearings at two ends of a cast steel upright post, the two forging rollers are meshed through the two long-tooth gears, the motor drives the flywheel through a triangular belt, the flywheel and the clutch arranged on one side of the flywheel are arranged in a rolling bearing on the high-speed shaft, the brake is arranged on the high-speed shaft on the other side of the flywheel, the high-speed shaft is transmitted to the upper forging roller through the gearwheel, and the upper forging roller and the lower forging roller are connected with each other through the two gears with the same transmission ratio; the clutch and the brake are simultaneously actuated through an electric valve control mechanism, and the rotary motion of the two forging rollers is transmitted to a high-speed shaft with the released brake through the clutch on the flywheel; the clutch is used for disconnecting the high-speed shaft and the forging roller, the clutch is an electric-pneumatic controlled single-disc friction clutch, the clutch is installed on a flywheel, the flywheel is installed on a roller bearing on the flywheel shaft, and the clutch comprises: the idle friction disc, the clutch piston cover, the clutch piston, the positioning bolt, the adjusting bolt and the spring; the idle friction disc is mounted on the high-speed shaft and transmits torque through the friction block, the clutch piston is mounted on a clutch piston cover and is arranged opposite to the idle friction disc, the clutch piston is sleeved on the bolt and reciprocates along the length direction of the bolt, the inner ring of the clutch piston cover is mounted on the flywheel through the positioning bolt, the outer ring of the clutch piston cover is mounted on the flywheel through the adjusting bolt, the adjusting bolt is mounted on the clutch piston cover along the horizontal direction, the spring is sleeved on the adjusting bolt, one end of the spring is supported against the edge position of the clutch piston, the clutch needs 5.5-6 ba air pressure, and compressed air is supplied through an air joint supported by a roller bearing.
However, the above-mentioned technique has a drawback in that the applicant has found that during the transmission of the clutch piston in contact engagement with the friction plates, it often occurs that the clutch piston makes a facet contact with the friction plates in an inclined position, resulting in a greater wear of both the clutch piston and the friction plates. Moreover, this undesirable wear is exacerbated by the need for the roll forging machine to frequently use clutches to disengage and engage the high speed shaft and the forging rolls during the manufacturing process.
In the prior art, technicians consider that the vibration of the whole machine is caused by the vibration of the motor, for example, li of Shandong science and technology university talks about the vibration control of the motor, namely the related content of vibration protection, in a college paper 'design of a monitoring and protecting system of a roll forging motor'. However, in the prior art, no one finds that the small-surface contact between the clutch piston and the friction disc in the inclined state also causes the unexpected vibration of the two forging rollers, and the quality of extrusion forming of the swing arm of the automobile is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
The utility model provides an automobile swing arm production facility based on roll forging technology, includes the clutch, its characterized in that:
the variable-volume inflating cavity between the inner side of the end cover and the piston is a conical annular cavity channel, at least part of a central cavity in the end cover provides sliding fit guide for axial movement of the piston, and the end cover is also provided with a resetting device which can drive the piston to the side of the end cover;
the piston is provided with a first friction ring laterally;
the friction disc is arranged between the piston and the driving wheel, a second friction ring is arranged on the friction disc, and the friction disc is fixedly connected with the high-speed shaft in a transmission mode through the end plate connecting part;
the piston can move towards the friction disc along the axial direction under the action of air pressure of the conical annular cavity, so that the first friction ring is in friction engagement with the second friction ring; the piston can also be released from the conical ring cavity, and the first friction ring is disengaged from the second friction ring under the action of the resetting device;
the gas supply switching part is arranged on the outer side of the end cover and used for supplying compressed gas to the conical annular cavity channel, and the gas supply switching part at least comprises two gas supply branches, the gas supply branches supply the compressed gas to the edge of the piston, and the gas supply branches are symmetrically arranged relative to the central axis of the end cover;
and a controller for controlling the compressed gas supply switching part.
The air supply switching part is also provided with a main air supply port, the main air supply port is connected to the central position of the end cover and is connected with the conical annular cavity channel, when the clutch promotes the first friction ring to be in frictional engagement with the second friction ring, the air supply switching part supplies air to the conical annular cavity channel through the air supply branch channel to pre-position the piston, and then the main air supply port is opened to push the piston to the friction disc along the axial direction; when the first friction ring and the second friction ring are in friction and full engagement, the air supply of the air supply branch is cut off firstly, and then the air supply quantity of the main air supply port is cut off until the main air supply port and the air supply branch are finished.
The air supply switching part comprises a main control valve part and a pre-control valve part which are arranged adjacently;
the main control valve part comprises a main control valve core and a first reset spring, a main path air supply port, a pre-control port and a main port, the main control valve core is normally closed to the main path air supply port under the bias of the first reset spring, a first cavity is formed between the main path air supply port and the main control valve core, a second cavity is formed between the main control valve core and a connecting port, the first reset spring is positioned in the second cavity, the first cavity corresponds to the main port, and the second cavity corresponds to the pre-control port;
the pre-control valve part sequentially comprises a third cavity, a pre-control valve core and a fourth cavity, the third cavity is communicated with the second cavity through a connecting port, a second reset spring is positioned in the fourth cavity, the air supply branch is connected with the third cavity, a pressure relief port corresponds to the fourth cavity, the pre-control valve core is a cone and is provided with a plurality of slow flow holes, the slow flow holes are communicated with the third cavity and the fourth cavity, and the cone of the pre-control valve core is normally closed at the tip end of the cone under the bias of the second reset spring to form a connecting port;
the gas supply port supplies gas to the pre-control port and the main port at the same time, and is controlled to be switched on and off by a compressed gas main valve V;
the pressure relief port is controlled to be on or off by a pressure relief valve V.
A roll forging process-based automobile swing arm production process uses the roll forging process-based automobile swing arm production equipment as claimed in the claims, and specifically comprises the following steps:
s1, a controller receives an instruction for executing the engagement of a first friction ring and a second friction ring of a clutch;
s2, the controller controls the pressure relief valve V to open, the air pressure in the fourth cavity suddenly drops, the pre-control valve core is pushed away by air supply of the pre-control port, and the pre-control port is communicated with at least two air supply branches and supplies compressed air to the edge of the piston to pre-position the piston; the air pressure of the second cavity is reduced, the main control valve core is pushed to the second cavity by the air supply of the main port, and the main port is communicated with the main air supply port to supply air so as to push the piston to the friction disc along the axial direction;
and S3, when the first friction ring is fully meshed with the second friction ring in a friction mode, the controller controls the pressure relief valve V to be closed, air supplied to the pre-control port enters the fourth cavity through the slow flow hole of the pre-control valve core, the pre-control valve core is biased by the second return spring to close the connection port so as to cut off air supply of the air supply branch, the main control valve core is biased to close the main air supply port under the combined force action of the main port, the pre-control port and the first return spring so as to cut off the air supply quantity of the main air supply port, and the piston can keep the first friction ring and the second friction ring to be fully meshed under the stable air pressure maintained by the conical ring-shaped cavity channel.
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.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a clutch part of an automobile swing arm production device based on a roll forging process;
FIG. 2 is a schematic view of the structure of the air supply switching part of the present invention in a closed state;
fig. 3 is a schematic view of the structure of the air supply switching part according to the present invention in an open state.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
a gas supply switching portion 100, a main control spool 101, a pre-control spool 102, a first chamber 103, a second chamber 104, a third chamber 105, a fourth chamber 106, a relief hole 107, a gas supply branch 11, a branch connection port 12, a branch gas supply port 13, a relief port 14, a gas supply port 15, a main gas supply port 16, a connection port 17, a pre-control port 18, a main port 19, an end cover 2, a tapered cover 21, an inner center chamber 22, a return end cap 24, a return spring 25, a return rod 26, a piston 3, a first friction ring 31, a friction disc 4, a second friction ring 41, an end plate connection portion 42, a drive wheel 5, a support sleeve 6, a return device 62, a high speed shaft 7, a compressed gas main valve V1, a relief valve V2, a pressure relief valve V1, and a piston 3
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example 1:
this embodiment provides an automobile swing arm production facility based on roll forging technology, and in the prior art, the transmission development about roll forging machine is comparatively ripe, generally includes motor, high-speed shaft, drive wheel 5, clutch, two forge rolls and stopper, and two are and set up from top to bottom forge the roll and be used for fixed roll forging mould, forge in the slide bearing at cast steel stand both ends is arranged in to the roll, two forge the roll and mesh through two long-teeth gears, the motor passes through V-belt transmission drive wheel 5, drive wheel 5 and dress are arranged in the epaxial antifriction bearing of high-speed with the clutch of drive wheel 5 on one of them side, are located be provided with on the high-speed shaft of drive wheel 5 opposite side the stopper, the high-speed shaft passes through gear wheel transmission to the upper forging roll, and forge the roll down through two gears interconnect that have the same drive ratio. The above structures are all described in the prior art, for example, in CN212469598U, and are not part of the description of this example.
This example focuses on describing the clutch portion, as in fig. 1, which includes:
the variable-volume inflating cavity between the inner side of the end cover 2 and the piston 3 is a conical annular cavity channel, at least part of the inner cavity of the end cover provides sliding fit guide for axial movement of the piston 3, and the end cover 2 is also provided with a resetting device which can drive the piston 3 to the end cover 2 side;
the piston 3, the piston 3 side direction has the first friction ring 31; the friction disc 4 is arranged between the piston 3 and the driving wheel 5, a second friction ring 41 is arranged on the friction disc 4, and the friction disc 4 is fixedly connected with the high-speed shaft 7 through an end plate connecting part 42 in a transmission mode;
the piston 3 can move towards the friction disc 4 along the axial direction under the action of air pressure of the conical annular cavity, so that the first friction ring 31 is in friction engagement with the second friction ring 41; the piston 3 can also be released from the engagement between the first friction ring 31 and the second friction ring 41 under the action of the resetting device after the pressure of the conical annular cavity is relieved;
in this embodiment, there is also a gas supply switching part 100, which is arranged outside the end cover 2 and is used for supplying compressed gas to the conical annular cavity, the gas supply switching part 100 includes at least two gas supply branches 11, the gas supply branches 11 supply compressed gas to the edge of the piston 3, and the gas supply branches 11 are symmetrically arranged with respect to the central axis of the end cover; and a controller for controlling the supply of the compressed gas by the gas supply switching part 100.
Specifically, the air supply switching part 100 supplies air to the conical annular cavity through the air supply branch 11 to pre-position the piston 3, so that the edge of the piston 3 is uniformly stressed and then pre-positioned, and the piston is pushed to the friction disc 4 in a stable and stable state, so that the first friction ring 31 is uniformly contacted with the second friction ring 41, the abrasion of the clutch piston and the friction disc is reduced, meanwhile, the vibration of the clutch when the first friction ring 31 is meshed with the second friction ring 41 is eliminated, the extrusion forming quality of the automobile swing arm is improved, and the quality of the product is improved.
Example 2:
the present embodiment, in addition to the content of the previous embodiment, further provides: the air supply switching part 100 is further provided with a main air supply port 16, the main air supply port 16 is connected to the central position of the end cover and is connected with the conical annular cavity, when the clutch promotes the first friction ring 31 to be in frictional engagement with the second friction ring 41, the air supply switching part 100 supplies air to the conical annular cavity through the air supply branch 11 to pre-position the piston 3, and then opens the main air supply port 16 to push the piston 3 to the friction disc 4 along the axial direction; when the first friction ring 31 is in full friction engagement with the second friction ring 41, the supply of air to the air supply branch 11 is cut off first, and then the supply of air to the main line air supply port 16 is cut off until the main line air supply port 16 and the air supply branch 11 are completely closed.
Specifically, it is clear from embodiment 2 that the air supply switching part 100 performs the above operation by pre-positioning the piston 3 and then sufficiently frictionally engaging it, and by using compressed air entirely, the air supply branch 11 and the main air supply port 16 in the air supply switching part 100 are used in cooperation to accomplish the object of the invention.
Example 3:
this embodiment, in addition to the contents of any of the previous embodiments, further provides: the air supply switching part 100 comprises a main control valve part and a pre-control valve part which are adjacently arranged;
the main control valve part comprises a main control valve core 101 and a first return spring, a main air supply port 16, a pre-control port 18 and a main port 19, the main control valve core 101 is normally closed to the main air supply port 16 under the bias of the first return spring, a first cavity 103 is formed between the main air supply port 16 and the main control valve core 101, a second cavity 104 is formed between the main control valve core 101 and a connecting port 17, the first return spring is positioned in the second cavity 104, the first cavity 103 corresponds to the main port 19, and the second cavity 104 corresponds to the pre-control port 18;
the pre-control valve part sequentially comprises a third cavity 105, a pre-control valve core 102 and a fourth cavity 106, the third cavity 105 is communicated with the second cavity 104 through a connecting port 17, a second return spring is positioned in the fourth cavity 106, the air supply branch 11 is connected with the third cavity 105, the pressure relief port 14 corresponds to the fourth cavity 106, the pre-control valve core 102 is a cone and is provided with a plurality of slow flow holes 107, the slow flow holes 107 are communicated with the third cavity 105 and the fourth cavity 106, and the cone of the pre-control valve core 102 is normally closed at the tip of the cone under the bias of the second return spring to connect the connecting port 17;
the gas supply port 15 simultaneously supplies gas to the pre-control port 18 and the main port 19, and is controlled to be switched on and off by a compressed gas main valve V1; preferably, the compressed gas main valve V1 is in a normally open state;
the pressure relief port 14 is opened and closed by a pressure relief valve V2.
In the present embodiment, the valve structure of the air supply switching portion 100 specifically realizes the function of pre-positioning the piston 3 and then rubbing to fully engage, and uses the minimum control signal to accomplish the above object, i.e., the engagement control of the clutch can be accomplished only by turning on and off the relief valve V2. The prior art can also use a large number of on-off valves to achieve the purpose of the invention, but the burden of the controller is increased additionally, and the control error and the failure risk are easy to occur. The air supply switching part 100 provides a stable and reliable control structure.
Example 4:
the embodiment provides an automobile swing arm production process based on a roll forging process, which uses the automobile swing arm production equipment based on the roll forging process, and specifically comprises the following steps:
s1, the controller receives an instruction for executing the engagement of a first friction ring 31 and a second friction ring 41 of the clutch;
s2, the controller controls the pressure relief valve V2 to be opened, the air pressure in the fourth cavity 106 suddenly drops, the pre-control valve core 102 is pushed away by air supply of the pre-control port 18, the pre-control port 18 is communicated with at least two air supply branches 11, and compressed air is supplied to the edge of the piston 3 to pre-position the piston 3; the air pressure in the second chamber 104 is reduced, the main control valve core 101 is pushed to the second chamber 104 by the air supply of the main port 19, the main port 19 is communicated with the main air supply port 16 for air supply, and the piston 3 is pushed to the friction disc 4 along the axial direction;
s3, when the first friction ring 31 is in full friction engagement with the second friction ring 41, the controller controls the relief valve V2 to be closed, the pre-control port 18 supplies air to enter the fourth cavity 106 through the slow flow hole 107 of the pre-control valve core 102, the air pressure of the fourth cavity 106 gradually rises, the pre-control valve core 102 is biased by the second return spring to close the connecting port 17 so as to cut off the air supply of the air supply branch 11, the main control valve core 101 is biased to close the main air supply port 16 under the combined force action of the main port 19, the pre-control port 18 and the first return spring so as to cut off the air supply amount of the main air supply port 16, and the piston 3 can keep the first friction ring 31 and the second friction ring 41 in full friction engagement under the stable air pressure maintained by the conical ring cavity.
The pressure relief of the conical annular cavity is realized when the clutch is disengaged, and the pressure relief is realized, which is the prior art, and is not repeated and is not the key focus of the invention.
In addition, the reset device 62 may be specifically composed of a reset end cap 24, a reset spring 25, a reset rod 26, a piston 3, and the like, which are also known in the art and are not described herein or are not the focus of the present invention.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present specification, the description of "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An automobile swing arm production device based on roll forging technology is provided with a clutch, and the clutch comprises:
the variable-volume inflating cavity between the inner side of the end cover and the piston (3) is a conical annular cavity channel, at least part of the inner side of the end cover provides sliding fit guide for axial movement of the piston, and the end cover is also provided with a resetting device which can drive the piston to the side of the end cover;
a piston (3) provided laterally with a first friction ring (31);
the friction disc (4) is arranged between the piston (3) and the driving wheel (5), a second friction ring (41) is arranged on the friction disc (4), and the friction disc (4) is fixedly connected with the high-speed shaft (7) in a transmission mode through an end plate connecting part (42);
the piston (3) can move towards the friction disc (4) along the axial direction under the action of air pressure of the conical annular cavity, so that the first friction ring (31) is in friction engagement with the second friction ring (41); the piston (3) can also be released from the engagement of the first friction ring (31) and the second friction ring (41) under the action of the resetting device after the pressure of the conical annular cavity is relieved; the method is characterized in that:
the gas supply switching part (100) is arranged on the outer side of the end cover (2) and used for supplying compressed gas to the conical annular cavity channel, the gas supply switching part (100) at least comprises two gas supply branches (11), the gas supply branches (11) supply the compressed gas to the edge of the piston, and the gas supply branches (11) are symmetrically arranged relative to the central axis of the end cover;
a controller for controlling the supply of compressed gas by the gas supply switching unit (100);
the air supply switching part (100) is also provided with a main path air supply port (16), the main path air supply port (16) is connected to the central position of the end cover and is connected with the conical annular cavity, when the clutch promotes the first friction ring (31) to be in friction engagement with the second friction ring (41), the air supply switching part (100) supplies air to the conical annular cavity through the air supply branch (11) to pre-position the piston (3), and then the main path air supply port (16) is opened to push the piston (3) to the friction disc (4) along the axial direction; when the first friction ring (31) and the second friction ring (41) are in full friction engagement, the air supply switching unit (100) first cuts off the air supply to the air supply branch (11), and then cuts off the air supply to the main air supply port (16) until the main air supply port (16) and the air supply branch (11) are completely closed.
2. The automobile swing arm production equipment based on the roll forging process as claimed in claim 1, wherein:
the air supply switching part (100) comprises a main control valve part and a pre-control valve part which are adjacently arranged;
the main control valve part comprises a main control valve core (101) and a first return spring, a main path air supply port (16), a pre-control port (18) and a main port (19), the main control valve core (101) is normally closed to the main path air supply port (16) under the bias of the first return spring, a first cavity (103) is formed between the main path air supply port (16) and the main control valve core (101), a second cavity (104) is formed between the main control valve core (101) and a connecting port (17), the first return spring is positioned in the second cavity (104), the first cavity (103) corresponds to the main port (19), and the second cavity (104) corresponds to the pre-control port (18);
the pre-control valve part sequentially comprises a third cavity (105), a pre-control valve core (102) and a fourth cavity (106), the third cavity (105) is communicated with the second cavity (104) through a connecting port (17), a second return spring is positioned in the fourth cavity (106), the air supply branch (11) is connected with the third cavity (105), a pressure relief port (14) corresponds to the fourth cavity (106), the pre-control valve core (102) is a cone and is provided with a plurality of slow flow holes (107), the slow flow holes (107) are communicated with the third cavity (105) and the fourth cavity (106), and the cone of the pre-control valve core (102) is biased by the second return spring to ensure that the tip of the cone is normally closed and is connected with the connecting port (17);
the gas supply port (15) simultaneously supplies gas to the pre-control port (18) and the main port (19), and is controlled to be switched on and off by a compressed gas main valve (V1);
the pressure relief port (14) is controlled to be opened or closed by a pressure relief valve (V2).
3. A roll forging process-based automobile swing arm production process using the roll forging process-based automobile swing arm production apparatus according to claim 2, characterized in that:
s1, a controller receives an instruction for executing the engagement of a first friction ring (31) and a second friction ring (41) of a clutch;
s2, the controller controls the pressure relief valve (V2) to be opened, the air pressure in the fourth cavity (106) suddenly drops, the pre-control valve core (102) is pushed away by air supply of the pre-control port (18), the pre-control port (18) is communicated with the at least two air supply branches (11) and supplies compressed air to the edge of the piston (3) to pre-position the piston (3); the air pressure of the second cavity (104) is reduced, the main control valve core (101) is pushed to the second cavity (104) by air supply of the main port (19), and the main port (19) is communicated with the main air supply port (16) to supply air so as to push the piston (3) to the friction disc (4) along the axial direction;
s3, when the first friction ring (31) is fully meshed with the second friction ring (41) in a friction mode, the controller controls the pressure relief valve (V2) to be closed, air supplied to the pre-control port (18) enters the fourth cavity (106) through the slow flow hole (107) of the pre-control valve core (102), the pre-control valve core (102) is biased to close the connecting port (17) by the second return spring so as to cut off air supplied to the air supply branch (11), the main control valve core (101) is biased to close the main air supply port (16) under the combined force of the main port (19), the pre-control port (18) and the first return spring so as to cut off the air supply amount of the main air supply port (16), and the piston (3) can keep the first friction ring (31) and the second friction ring (41) in a friction mode and fully meshed under the stable air pressure maintained by the conical ring cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498156.7A CN113217554B (en) | 2021-05-08 | 2021-05-08 | Automobile swing arm production equipment based on roll forging process and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498156.7A CN113217554B (en) | 2021-05-08 | 2021-05-08 | Automobile swing arm production equipment based on roll forging process and production process thereof |
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| GB1038676A (en) * | 1963-07-01 | 1966-08-10 | Horton Mfg Co Inc | Fluid operated clutch |
| GB1453029A (en) * | 1972-10-13 | 1976-10-20 | Automotive Prod Co Ltd | Piston and cylinder type actuating devices |
| CN203239794U (en) * | 2013-04-16 | 2013-10-16 | 西安交通大学 | Floating insert type friction clutch for air compressor |
| CN103697081A (en) * | 2013-12-27 | 2014-04-02 | 荣成金辰机械制造有限公司 | Double-plate friction clutch of press machine |
| JP2015187465A (en) * | 2014-03-26 | 2015-10-29 | 本田技研工業株式会社 | Wet multiple-disc clutch |
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Effective date of registration: 20221207 Address after: 315,501 Mujiling Village, Shangtian Street, Fenghua District, Ningbo City, Zhejiang Province Applicant after: Zhejiang Ruitai Suspension System Technology Ltd. Address before: 317016 No. 3-25, Hedong Village, Duqiao Town, Linhai City, Taizhou City, Zhejiang Province Applicant before: Xiang Cai |
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