Manual bushing extrusion equipment for aluminum alloy steering knuckle casting

Abstract

The invention relates to the technical field of aluminum alloy automobile part production and manufacturing, in particular to manual lining extrusion equipment for an aluminum alloy steering knuckle casting. At present, special equipment is generally required to be purchased or a band saw is used for cutting when a bushing is taken out of an aluminum alloy steering knuckle casting with abnormal quality. Special equipment is high in price, and a clamping tool is complex to manufacture. When a band saw is used for cutting, great potential safety hazards exist, and efficiency is low. By the adoption of the technical scheme, the equipment and the clamping tool are easy to manufacture, low in price, safe, reliable and easy and fast to change, and the working efficiency meets the field requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of production and manufacturing of aluminum alloy automotive parts, and particularly to a production device for aluminum alloy steering knuckle castings. Background Art

[0002] Aluminum alloy automotive parts have been widely used in the production and manufacturing of automotive parts due to their advantages such as light weight, high strength, corrosion resistance, and easy processing. Among them, aluminum alloy steering knuckle castings are key components in the automotive steering system. They are connected to the front axle or the vehicle frame through kingpins and bear various forces such as vertical loads, driving forces, braking forces, and lateral forces at the front of the vehicle, and transmit these forces to relevant components. During vehicle driving, especially under conditions such as steering, braking, and acceleration, the steering knuckle needs to bear huge stresses. Therefore, it is required to have high strength and stiffness to ensure the driving safety and reliability of the vehicle. Therefore, quality control in the production process of aluminum alloy steering knuckles is extremely strict. Every link from aluminum ingot melting to packaging and shipping must meet quality requirements, including aluminum liquid composition detection, casting blank shape detection, X-ray detection, heat treatment furnace temperature detection, bushing press-in torque curve detection, final inspection appearance detection, etc. Once a quality problem occurs, it has to be scrapped and remelted. The remelted castings need to meet the requirements of composition consistency. For castings with bushings already pressed in, the bushings must be removed before remelting.

[0003] Currently, generally, special equipment needs to be purchased or band saw cutting is used to remove the bushings from the steering knuckle castings with quality anomalies. The special equipment is expensive, the clamping tooling is complex to manufacture, and at least one set of clamping tooling needs to be equipped for each product. Using band saw cutting has very big safety hazards and low efficiency. Summary of the Invention

[0004] The present invention provides a manual bushing pressing-out device for aluminum alloy steering knuckle castings. By adopting the technical solution provided by the present invention, the device and the clamping tooling are simple to manufacture, low in price, safe and reliable, easy and quick to change models, and the working efficiency meets the on-site requirements.

[0005] To achieve the above object, the present invention provides the following technical solution: A manual bushing pressing-out device for an aluminum alloy steering knuckle casting, comprising a foot-operated hydraulic jack, an extension rod, a movable ejector rod, a bottom plate, a vertical beam, a reinforcing guide beam, a reinforcing rib, a top beam, a movable U-shaped block, and a strong magnet. The foot-operated hydraulic jack is a common and mature product. When a pressure pedal is continuously stepped on, the cylinder rod of the jack extends. There is also a pressure relief pedal. When the pressure relief pedal is stepped on, the cylinder rod of the jack can retract under an external force. A threaded hole is machined at the top of the cylinder rod of the jack, which is used to connect the extension rod in this application. The extension rod is made of round steel. One end is machined with a threaded column for screwing into the threaded hole at the top of the cylinder rod of the jack, and the other end is machined with a relatively deep round hole for inserting the movable U-shaped block or the movable ejector rod. The movable U-shaped block is made of steel. The upper part is machined into a U-shaped block with a certain thickness. Below the center of the U-shaped block is a relatively long cylinder. The bottom plate is a thick rectangular steel plate, with four round holes machined on it for passing through expansion bolts to be fixed on the ground. The vertical beam, the reinforcing guide beam, and the top beam are all hollow square tubes. One end of the two vertical beams is respectively welded to the bottom plate. The reinforcing guide beam and the top beam are respectively welded in the middle of the two vertical beams. Among them, the top beam is welded at the top, and the reinforcing guide beam is welded in the vicinity of the middle. Round holes are machined at the centers of the top beam and the reinforcing guide beam. The round hole of the top beam is used to pass through the movable U-shaped block or the movable ejector rod, and the round hole of the reinforcing guide beam is used to pass through the extension rod. The reinforcing rib is a triangular steel plate, welded at the connection positions of the vertical beam, the bottom plate, and the top beam to increase the strength of the frame. The strong magnet is in the shape of a hollow cylinder. The size of the central round hole is the same as that of the round hole of the top beam, and it is placed on the top of the round hole of the top beam. Its magnetic force can fix the inserted movable U-shaped block or movable ejector rod.

[0006] The movable ejector rod is made of round steel in the shape of a stepped shaft. The diameter and length of the first section starting from the upper end are the same as those of the relatively long cylinder below the movable U-shaped block. This section is used to insert into the extension rod or the top beam. The diameter of the second section is larger than that of the first section. The annular surface at the junction abuts against the surface of the extension rod or the bottom surface of the top beam. The diameter of the third section is slightly smaller than the maximum outer diameter of the bushing and is machined with a chamfer to avoid interference with the outer casting body of the bushing. The sum of the lengths of the second section and the third section is equal to or slightly greater than the height of the bushing to ensure that the bushing can be completely pressed out. The diameter of the fourth section is slightly smaller than the inner diameter of the bushing, and its front end is machined with a chamfer. The fourth section can ensure the concentricity of the bushing and the movable ejector rod, avoid interference between the third section and the casting body, and its length is less than the height of the bushing.

[0007] In some embodiments, the relatively long cylinder below the movable U-shaped block can be integrally formed with the U-shaped block by welding or bolt connection.

[0008] In some embodiments, chamfers are machined at the front end of the relatively long cylinder below the movable U-shaped block and the uppermost end of the movable ejector rod for convenient installation.

[0009] In some embodiments, the movable U-shaped block and the movable ejector rod are made according to the bushing size. For different bushings, only the movable U-shaped block and the movable ejector rod need to be replaced.

[0010] In some embodiments, both the movable U-shaped block and the movable ejector rod can be installed on the top beam or the extension rod, and can be flexibly selected according to actual needs or operating habits.

[0011] In some embodiments, when the pedal-type hydraulic jack is depressurized, the jack cylinder rod is retracted by the gravity of the extension rod. If the retraction speed is slow, a counterweight can be added below the extension rod to increase the retraction speed.

[0012] Second, the present application provides a method for pressing out a bushing, which uses any one of the above-mentioned manual bushing pressing-out devices for aluminum alloy steering knuckle castings, and further includes an aluminum alloy steering knuckle casting, and includes the following steps: Step 1: Install and prepare a movable U-shaped block and a movable ejector rod that match the size of the bushing to be pressed out. Step 2: Insert the bushing to be pressed out of the aluminum alloy steering knuckle casting into the movable ejector rod. Step 3: Step on the pressurizing pedal of the pedal-type hydraulic jack, and the movable ejector rod rises as the jack cylinder rod extends. until the aluminum alloy steering knuckle casting contacts the movable U-shaped block; Step 4: When the aluminum alloy steering knuckle casting contacts the movable U-shaped block, observe and confirm that the movable U-shaped block does not contact the casting body, and then continue to step on the jack until the bushing is pressed out; Step 5: Step on the depressurizing pedal of the pedal-type hydraulic jack, and the movable ejector rod retracts and drops to the original position as the jack cylinder rod retracts. Remove the aluminum alloy steering knuckle casting and the bushing. Step 6: Step on the depressurizing pedal of the pedal-type hydraulic jack, and the movable ejector rod retracts and drops to the original position as the jack cylinder rod retracts, and take out the aluminum alloy steering knuckle casting and the bushing. Step 7: Remove the aluminum alloy steering knuckle casting and the bushing.

[0013] The present invention provides a manual bushing pressing-out device for aluminum alloy steering knuckle castings. By adopting the technical solution provided by the present invention, the equipment and the clamping tooling are simple to manufacture, low in price, safe and reliable, easy and quick to change models, and the working efficiency meets the on-site requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a manual bushing pressing-out device for an aluminum alloy steering knuckle casting according to the present invention.

[0016] Figure 2 It is a schematic diagram of the bushing extrusion operation of the present invention.

[0017] Figure 3 It is a schematic diagram of the movable ejector rod of the present invention.

[0018] Figure 4 It is a schematic diagram of the movable U-shaped block of the present invention.

[0019] Figure 5 It is a schematic diagram of the aluminum alloy steering knuckle casting of the present invention.

[0020] Figure 6 It is a schematic diagram of the bushing of the present invention.

[0021] Figure 1 In the figure: 1 - Foot-operated hydraulic jack, 2 - Extension rod, 3 - Movable ejector rod, 4 - Bottom plate, 5 - Vertical beam, 6 - Reinforced guide beam, 7 - Reinforcing rib, 8 - Top beam, 9 - Movable U-shaped block, 10 - Strong magnet. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the accompanying drawings thereof are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0024] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] Next, in conjunction with the attached Figure 1 , 3 , 4, the embodiment 1 of the present invention will be described: A manual bushing extrusion device for aluminum alloy steering knuckle castings, including a foot-operated hydraulic jack, an extension rod, and a movable The movable push rod, bottom plate, vertical beam, reinforced guide beam, reinforcing rib, top beam, movable U-shaped block, and strong magnet. The foot-operated hydraulic jack is a universal and mature product. It has a pressure pedal that extends the jack cylinder rod when it is continuously stepped on, and a pressure relief pedal that can retract the jack cylinder rod under external force after being stepped on. A threaded hole is processed on the top of the jack cylinder rod, which is used to connect the extension rod in this case; the extension rod is made of round steel, one end of which is processed with a threaded column for screwing into the threaded hole on the top of the jack cylinder rod, and the other end is processed with a deeper round hole for inserting a movable U-shaped block or a movable push rod; the movable U-shaped block is made of steel, and the upper part is processed into a U-shaped block of a certain thickness, and there is a longer cylinder directly below the center of the U-shaped block; the bottom plate is a rectangular thick steel plate with four The circular hole is used to insert the expansion bolts to fix them on the ground; the vertical beams, reinforced guide beams and top beams are all hollow square tubes, one end of the two vertical beams is welded to the bottom plate respectively, the reinforced guide beam and the top beam are respectively welded in the middle of the two vertical beams, wherein the top beam is welded at the top, and the reinforced guide beam is welded in the area near the middle, the top beam and the reinforced guide beam are both processed with circular holes in the center, the circular hole of the top beam is used to insert the movable U-shaped block or movable top rod, and the circular hole of the reinforced guide beam is used to insert the extension rod; the reinforcing ribs are triangular steel plates, which are welded at the connection positions of the vertical beams, the bottom plate and the top beam to increase the strength of the frame; the strong magnet is in the shape of a hollow cylinder, the central circular hole and the circular hole of the top beam are of the same size, and are placed on the top of the circular hole of the top beam, and its magnetic force can fix the inserted movable U-shaped block or movable top rod.

[0026] The movable push rod is made of round steel in the shape of a stepped shaft. The diameter and length of the first section starting from the upper end are consistent with the longer cylinder under the movable U-shaped block, and this section is used to insert an extension rod or a top beam; the diameter of the second section is larger than the diameter of the first section, and the annular surface at the intersection is against the surface of the extension rod or the bottom surface of the top beam; the diameter of the third section is slightly smaller than the maximum outer diameter of the bushing and is chamfered to avoid interference with the outer casting body of the bushing; the sum of the lengths of the second and third sections is equal to or slightly larger than the height of the bushing to ensure that the bushing can be completely pressed out; the diameter of the fourth section is slightly smaller than the inner diameter of the bushing, and its front end is chamfered. The fourth section can ensure that the bushing and the movable push rod are concentric, avoiding interference between the third section and the casting body, and its length only needs to be smaller than the height of the bushing.

[0027] In some embodiments, the longer cylinder below the movable U-shaped block can be connected to the U-shaped block by welding or bolts to form a whole.

[0028] In some embodiments, the front end of the longer cylinder below the movable U-shaped block and the uppermost end of the movable push rod are both chamfered to facilitate installation.

[0029] In some embodiments, the movable U-shaped block and the movable ejector rod are made according to the bushing size. For different bushings, only the movable U-shaped block and the movable ejector rod need to be replaced.

[0030] In some embodiments, both the movable U-shaped block and the movable ejector rod can be installed on the top beam or the extension rod, and can be flexibly selected according to actual needs or operating habits.

[0031] In some embodiments, when the pedal type hydraulic jack is depressurized, the jack cylinder rod is retracted by the gravity of the extension rod. If the retraction speed is slow, a counterweight can be added under the extension rod to increase the retraction speed.

[0032] Combined with attached Figure 2 、 5 、6 to illustrate Embodiment 2 of the present invention: A method for pressing out a bushing, using any of the above-mentioned manual bushing pressing-out devices for aluminum alloy steering knuckle castings. It includes the following steps: Step 1: Install and prepare a movable U-shaped block and a movable ejector rod that match the size of the bushing to be pressed out. Step 2: Insert the bushing to be pressed out of the aluminum alloy steering knuckle casting into the movable ejector rod. Step 3: Step on the pressurizing pedal of the pedal type hydraulic jack, and the movable ejector rod rises as the jack cylinder rod extends. Until the aluminum alloy steering knuckle casting contacts the movable U-shaped block. Step 4: When the aluminum alloy steering knuckle casting contacts the movable U-shaped block, observe and confirm that the movable U-shaped block does not contact the casting body, and then continue to step on the jack until the bushing is pressed out. Step 5: Step on the depressurizing pedal of the pedal type hydraulic jack, and the movable ejector rod drops back to its original position as the jack cylinder rod retracts, and take out the aluminum alloy steering knuckle casting and the bushing.

[0033] It can be seen that the present invention provides a manual bushing pressing-out device for aluminum alloy steering knuckle castings. By adopting the technical solution provided by the present invention, the device and the clamping tooling are simple to manufacture, low in price, safe and reliable, easy and quick to change types, and the working efficiency meets the on-site requirements.​​

Claims

1. A manual bushing extrusion device for aluminum alloy steering knuckle castings, including a foot-operated hydraulic jack, an extension rod, Active top rod, bottom plate, vertical beam, reinforced guide beam, reinforcing rib, top beam, active U-shaped block, strong magnet, characterized by: A threaded hole for connecting the extension rod is arranged at the top of the pedal jack cylinder rod, a threaded column for screwing into the threaded hole at the top of the jack cylinder rod is arranged at one end of the extension rod, and a round hole for inserting a movable U-shaped block or a movable push rod is arranged at the other end, a U-shaped block is arranged above the movable U-shaped block, and a round column is arranged directly below the center of the U-shaped block; the vertical beam, the reinforcement guide beam and the top beam are all hollow square tubes, one end of the two vertical beams are respectively arranged on the bottom plate, the reinforcement guide beam and the top beam are respectively arranged in the middle of the two vertical beams, wherein the top beam is arranged at the top, and the reinforcement guide beam is arranged in the middle area, and the center of the top beam and the reinforcement guide beam are both provided with a round hole, and the reinforcement rib is a triangular steel plate, which is arranged at the connection position of the vertical beam, the bottom plate and the top beam; the strong magnet is in the shape of a hollow cylinder, the central round hole of which is the same size as the round hole of the top beam, and is placed on the top of the round hole of the top beam, and its magnetic force fixes the inserted movable U-shaped block or movable push rod.

2. According to the manual bushing extrusion equipment for aluminum alloy steering knuckle castings described in claim 1, characterized in that In: The movable ejector rod is divided into four sections with different diameters. Starting from the upper end, the diameter and length of the first section are consistent with the cylinder under the movable U-shaped block, and this section is used to insert the extension rod or the top beam; the diameter of the second section is larger than the diameter of the first section, and the annular surface at the intersection is against the surface of the extension rod or the bottom surface of the top beam; the diameter of the third section is slightly smaller than the maximum outer diameter of the bushing and a chamfer is set; the sum of the lengths of the second and third sections is equal to or slightly larger than the height of the bushing, the diameter of the fourth section is slightly smaller than the inner diameter of the bushing, and a chamfer is set at its front end. The fourth section ensures that the bushing and the movable ejector rod are concentric to avoid interference between the third section and the casting body, and its length is less than the height of the bushing.

3. According to the manual bushing extrusion equipment for aluminum alloy steering knuckle castings described in claim 1, characterized in that In: The lower cylinder of the movable U-shaped block forms a whole with the U-shaped block.

4. According to the manual bushing extrusion equipment for aluminum alloy steering knuckle castings described in claim 1, it is characterized in that In: The front end of the cylinder below the movable U-shaped block and the uppermost end of the movable push rod are both provided with chamfers.

5. According to the manual bushing extrusion equipment for aluminum alloy steering knuckle castings described in claim 1, it is characterized in that Yu: The movable U-shaped block and the movable top rod are both installed on the top beam or the extension rod.

6. A manual bushing extrusion method for aluminum alloy steering knuckle casting, characterized in that: The steps include: Step 1: Install and prepare the movable U-shaped block and movable ejector rod that match the size of the extruded bushing; Step 2: Insert the bushing to be pressed out of the aluminum alloy steering knuckle casting into the movable ejector rod; Step 3: Step on the pressure pedal of the pedal hydraulic jack, and the movable push rod will rise as the jack cylinder rod extends. Until the aluminum alloy steering knuckle casting contacts the movable U-shaped block; Step 4: When the aluminum alloy steering knuckle casting contacts the movable U-shaped block, observe and confirm that the movable U-shaped block does not contact the casting. Step 5: Press the pressure relief pedal of the pedal-type hydraulic jack, and the movable push rod will drop to its original position as the jack cylinder rod retracts, and take out the aluminum alloy steering knuckle casting and bushing.

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