CN111546013A - Heavy truck knuckle processing technology - Google Patents
Heavy truck knuckle processing technology Download PDFInfo
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- CN111546013A CN111546013A CN202010420925.7A CN202010420925A CN111546013A CN 111546013 A CN111546013 A CN 111546013A CN 202010420925 A CN202010420925 A CN 202010420925A CN 111546013 A CN111546013 A CN 111546013A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention relates to the technical field of automobile part processing, and solves the problem that multiple positioning is needed in the processing process of a heavy truck steering knuckle in the prior art. A processing technology for a heavy truck knuckle comprises the following steps: s1: positioning and clamping a forging blank on a horizontal machining center; s2: finely milling a plane and inner opening, roughly boring a main pin hole, finely boring the main pin hole, drilling, tapping threads, drilling a central hole and milling flat; s3: positioning and clamping the forging blank body and the counterweight body on a vertical lathe; s4: roughly and finely turning the disc surface and the shaft diameter, and threading the shaft diameter; s5: and (6) cleaning. The forging blank is processed only by positioning twice on a horizontal processing center and a vertical double-cutter tower lathe, so that repeated positioning errors such as repeated positioning of a processing object, repeated conversion of a positioning reference and the like in a process are avoided, and risks such as collision, scratching and the like caused by frequent circulation and positioning in a steering knuckle process are avoided.
Description
Technical Field
The invention relates to the technical field of automobile part processing, in particular to a processing technology of a heavy truck steering knuckle.
Background
With the high-speed development of numerical control machine tools, the composite machining technology is mature and applied in the machining industry, particularly, a horizontal machining center integrates various machining processes such as drilling, boring, milling and tapping, the high-speed, high-efficiency and high-integration machining function is realized, the traditional special machine tool and single-function numerical control equipment are successfully replaced, and the production efficiency and the machining quality are remarkably improved.
The power turret composite numerical control turning and milling center is provided with the processing functions of turning, milling, drilling, tapping and the like, is limited by processing power and output torque, but is mature and applied to small and light cutting, so that the conversion matching processing between the part procedures is more flexible, and the processing efficiency is obviously improved.
The machining process of the heavy truck knuckle from a forging blank to a finished product generally comprises the working procedures of end face milling, center hole drilling, rough turning of an outer circle and a disc surface, semi-finish turning of the outer circle and the disc surface, thread turning, rough milling of an inner open stop, main pin hole drilling, large shaft diameter outer circle and end face grinding, small shaft diameter outer circle grinding, rough and finish boring of a main pin hole, ABS hole drilling, finish milling of the inner open stop, disc hole drilling and eye hole drilling, thread tapping, flat milling, cross hole drilling, flaw detection, cleaning, final inspection, warehousing and the like. In the conventional process, a plurality of processing procedures are required, a processing object needs to be positioned for a plurality of times in the procedures, repeated positioning errors such as repeated conversion of positioning references and the like are caused, and risks such as collision, scratch and the like are caused by frequent circulation and positioning in the procedures of the steering knuckle.
Disclosure of Invention
The invention provides a heavy truck steering knuckle processing technology, which solves the problem that multiple positioning is needed in the heavy truck steering knuckle processing process in the prior art.
A processing technology for a heavy truck knuckle comprises the following steps:
s1: positioning and clamping a forging blank on a horizontal machining center;
s2: finely milling a plane and inner opening, roughly boring a main pin hole, finely boring the main pin hole, drilling, tapping threads, drilling a central hole and milling flat;
s3: positioning and clamping the forging blank body and the counterweight body on a vertical lathe;
s4: roughly and finely turning the disc surface and the shaft diameter, and threading the shaft diameter;
s5: cleaning on line;
s6: detecting on line;
s7: flaw detection;
s8: final inspection (offline);
s9: and (7) warehousing. The forging blank is processed only by positioning twice on a horizontal processing center and a vertical double-cutter tower lathe, so that repeated positioning errors such as repeated positioning of a processing object, repeated conversion of a positioning reference and the like in a process are avoided, and risks such as collision, scratching and the like caused by frequent circulation and positioning in a steering knuckle process are avoided. Dozens of traditional processes are integrated into two processes to complete the process, and the ATRIS intelligent tool wear detection system is configured by being compatible with two steering knuckles of a drum type and a disc type, so that the monitoring of the process machining state is realized, and the machining precision and the product quality are improved.
Further, S1 specifically is: the shaft diameter of the forging blank body penetrates through a through hole in a bridge plate of the horizontal machining center, three limiting bosses on the bridge plate abut against the contour of the forging blank body to position the forging blank body to prevent the forging blank body from rotating, and three high-pressure oil cylinders uniformly distributed on the periphery of the lower side of the bridge plate clamp the shaft diameter. The bridge plate is a supporting mechanism of the horizontal machining center for bearing a machining object and is provided with a through hole, the shaft diameter penetrates through the through hole, three limiting bosses of a V-shaped structure are arranged on the bridge plate and abut against the contour of a forging blank, and after positioning is completed, three high-pressure oil cylinders below the bridge plate clamp the shaft diameter. Four through holes and four matched limiting bosses are arranged on the bridge plate, wherein two groups of limiting bosses are suitable for the drum type steering knuckle, and the two groups of limiting bosses are suitable for the disc type steering knuckle.
Further, S2 specifically is: and (3) carrying out finish milling on the plane part and the inner open gear of the forging blank by using a horizontal machining center, then carrying out rough boring and finish boring on the main pin hole, drilling a connecting hole of the disc brake, an ABS hole and an eye hole, tapping a threaded hole, drilling a center hole and milling to be flat. The plane part of the forging blank comprises a disc surface and a plane at an inner opening position.
Further, S1 includes machining the shaft end cross bore using a 90 ° angle head.
Further, the flattening in S2 is specifically flattening the shaft diameter.
Further, S3 specifically is: three positioning bosses on the C shaft of the vertical lathe are respectively inserted into the central hole of the forging blank, the two eye holes and the central hole of the counterweight body, so that the gravity center of the forging blank and the gravity center of the counterweight body are symmetrical about the axis of the C shaft. The C shaft of the vertical lathe is provided with a large-mass rotating body for reducing the influence of centrifugal force on the axis of the C shaft at the center of a processed object, the mass of the rotating body is far larger than that of a forged piece green body, but the centrifugal force still can cause certain influence on processing, the counterweight body is provided with three through holes matched with three positioning bosses, the positioning bosses penetrate through a center hole of the forged piece green body and three through holes of the glasses control and counterweight body, the counterweight body and the forged piece green body are fixed on the C shaft together, the gravity center of the forged piece green body and the gravity center of the counterweight body are symmetrical about the axis of the C shaft, and the influence of. The process scheme that the gravity center direction of the steering knuckle is concentric with the rotating shaft is adopted, and the influence degree of the rotating centrifugal force on the machining precision is reduced. Optimizing the high-speed rotation dynamic balance of the steering knuckle special-shaped structure.
Further, S4 specifically is: and roughly and finely turning the disc surface and the shaft diameter, and turning the screw thread on the shaft diameter. And the fine turning and chip breaking are realized by utilizing a thread structure. And chamfering the center hole, the disc brake connecting hole, the main pin hole, the inner open gear and the ABS hole.
Further, S5 specifically is: and (5) cleaning burrs at the thread part by using a steel wire brush. The cutter tower power cutter holder is adopted, and the steel wire brush is arranged, so that the burr at the thread part is cleaned.
Further, S6 specifically is: and (3) realizing the function of online detection of the cutter damage by using ATRIS software.
According to the technical scheme, the invention has the following advantages:
the forging blank is processed only by positioning twice on a horizontal processing center and a vertical double-cutter tower lathe, so that repeated positioning errors such as repeated positioning of a processing object, repeated conversion of a positioning reference and the like in a process are avoided, and risks such as collision, scratching and the like caused by frequent circulation and positioning in a steering knuckle process are avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a front view of a disc knuckle according to the present invention.
Fig. 2 is a left side view of the disc knuckle of the present invention.
Fig. 3 is a front view of a drum type knuckle according to the present invention.
Fig. 4 is a front view of a drum knuckle according to the present invention.
1. The inner opening gear comprises an inner opening gear 2, a main pin hole 3, a central hole 4, a disc surface 5, an axial diameter 6, a disc brake connecting hole 7, an ABS hole 8, a threaded hole 9, a thread 10, an axial end cross hole 11, an eye hole 12, a flat position 13, an upper die surface 14 and a parting surface.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all 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 scope of protection of this patent.
Example 1
As shown in fig. 1-4, a heavy truck knuckle processing technology comprises the following steps:
s1: positioning and clamping a forging blank on a horizontal machining center; s1 specifically includes: the shaft diameter 5 of the forging blank body penetrates through a through hole in a bridge plate of the horizontal machining center, three limiting bosses on the bridge plate abut against the contour of the forging blank body to position the forging blank body to prevent the forging blank body from rotating, and three high-pressure oil cylinders uniformly distributed on the periphery of the lower side of the bridge plate clamp the shaft diameter 5 tightly. The bridge plate is a supporting mechanism of the horizontal machining center for bearing a machining object and is provided with a through hole, the shaft diameter 5 penetrates through the through hole, three limiting bosses of a V-shaped structure are arranged on the bridge plate and abut against the contour of a forging blank, and after positioning is completed, three high-pressure oil cylinders below the bridge plate clamp the shaft diameter 5. Four through holes and four matched limiting bosses are arranged on the bridge plate, wherein two groups of limiting bosses are suitable for the drum type steering knuckle, and the two groups of limiting bosses are suitable for the disc type steering knuckle. S1 also includes machining the shaft end cross bore 10 using a 90 ° angle head.
S2: finely milling a plane and an inner opening 1, roughly boring a main pin hole 2, finely boring the main pin hole 2, drilling, tapping a thread 9, drilling a central hole 3 and milling flat; s2 specifically includes: and (3) carrying out finish milling on the plane part and the inner open gear 1 of the forging blank by using a horizontal machining center, then carrying out rough boring and finish boring on the main pin hole 2, drilling the connecting hole 6 of the disc brake, the ABS hole 7 and the eye hole 11, tapping the threaded hole 8, drilling the central hole 3, and milling to be flat. The plane part of the forging blank comprises a disc surface 4 and a plane at an inner opening 1. And S2, flattening is specifically to flatten the shaft diameter 5.
S3: positioning and clamping the forging blank body and the counterweight body on a vertical lathe; s3 specifically includes: three positioning bosses on the C shaft of the vertical lathe are respectively inserted into the central hole 3 and the two eye holes 11 of the forging blank and the central hole 3 of the counterweight body, so that the gravity center of the forging blank and the gravity center of the counterweight body are symmetrical about the C shaft axis. The C shaft of the vertical lathe is provided with a large-mass rotating body for reducing the influence of centrifugal force on the axis of the C shaft at the center of a processed object, the mass of the rotating body is far larger than that of a forged piece green body, but the centrifugal force still can cause certain influence on processing, the counterweight body is provided with three through holes matched with three positioning bosses, the positioning bosses penetrate through a center hole 3 of the forged piece green body and three through holes of the glasses control and counterweight body, the counterweight body and the forged piece green body are fixed on the C shaft together, the gravity center of the forged piece green body and the gravity center of the counterweight body are symmetrical about the axis of the C shaft, and the influence of. The process scheme that the gravity center direction of the steering knuckle is concentric with the rotating shaft is adopted, and the influence degree of the rotating centrifugal force on the machining precision is reduced. Optimizing the high-speed rotation dynamic balance of the steering knuckle special-shaped structure.
S4: roughly and finely turning the disc surface 4 and the shaft diameter 5, and threading 9 the shaft diameter 5; s4 specifically includes: the disc surface 4 and the shaft diameter 5 are roughly and finely turned, and the shaft diameter 5 is threaded 9. And the fine turning and chip breaking are realized by utilizing the structure of the thread 9. And chamfering the central hole 3, the disc brake connecting hole 6, the main pin hole 2, the inner open gear 1 and the ABS hole 7.
S5: cleaning on line; s5 specifically includes: the burr at the thread 9 is cleaned using a wire brush. The cutter tower power cutter holder is adopted, and the steel wire brush is arranged, so that the burrs at the thread 9 are cleaned.
S6: detecting on line; s6 specifically includes: and (3) realizing the function of online detection of the cutter damage by using ATRIS software.
S7: flaw detection; the forging blank is processed only by positioning twice on a horizontal processing center and a vertical double-cutter tower lathe, so that repeated positioning errors such as repeated positioning of a processing object, repeated conversion of a positioning reference and the like in a process are avoided, and risks such as collision, scratching and the like caused by frequent circulation and positioning in a steering knuckle process are avoided. Dozens of traditional processes are integrated into two processes to complete the process, and the ATRIS intelligent tool wear detection system is configured by being compatible with two steering knuckles of a drum type and a disc type, so that the monitoring of the process machining state is realized, and the machining precision and the product quality are improved.
S8: final inspection (offline);
s9: and (7) warehousing.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The processing technology of the heavy truck knuckle is characterized by comprising the following steps:
s1: positioning and clamping a forging blank on a horizontal machining center;
s2: finely milling a plane and an inner opening (1), roughly boring a main pin hole (2), finely boring the main pin hole (2), drilling, tapping and milling to be flat;
s3: positioning and clamping the forging blank body and the counterweight body on a vertical lathe;
s4: roughly and finely turning the disc surface (4) and the shaft diameter (5), and threading the shaft diameter (5);
s5: and (6) cleaning.
2. The heavy truck knuckle processing technology of claim 1, wherein S1 specifically comprises: the shaft diameter (5) of the forging blank body penetrates through a through hole in a bridge plate of the horizontal machining center, three limiting bosses on the bridge plate abut against the contour of the forging blank body to position the forging blank body to prevent the forging blank body from rotating, and three high-pressure oil cylinders uniformly distributed on the circumference of the lower side of the bridge plate clamp the shaft diameter (5) after positioning is completed.
3. The heavy truck knuckle machining process according to claim 1 or 2, characterized in that S1 further comprises machining the shaft end cross hole (10) using a 90 ° angle head.
4. The heavy truck knuckle processing technology of claim 1, wherein S2 specifically comprises: the horizontal machining center is used for carrying out finish milling on the plane part and the inner open gear (1) of the forging blank, then the main pin hole (2) is subjected to rough boring and finish boring, the disc type brake connecting hole (6), the ABS hole (7), the eye hole (11) and the central hole (3) are drilled, the threaded hole (8) is tapped, and the flat milling is carried out.
5. The heavy truck knuckle machining process according to claim 1 or 4, wherein the flattening in S2 is to flatten the shaft diameter (5).
6. The heavy truck knuckle processing technology of claim 1, wherein S3 specifically comprises: three positioning bosses on the C shaft of the vertical lathe are respectively inserted into the central hole (3) and the two eye holes (11) of the forging blank and the central hole of the counterweight body, so that the gravity center of the forging blank and the gravity center of the counterweight body are symmetrical about the C shaft axis.
7. The heavy truck knuckle processing technology of claim 1, wherein S4 specifically comprises: the disc surface (4) and the shaft diameter (5) are roughly turned and finely turned, and the shaft diameter (5) is turned with threads.
8. The heavy truck knuckle processing technology of claim 1, wherein S5 specifically comprises: and (5) cleaning burrs at the thread part by using a steel wire brush.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010420925.7A CN111546013B (en) | 2020-05-18 | 2020-05-18 | Heavy truck knuckle processing technology |
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| CN202010420925.7A CN111546013B (en) | 2020-05-18 | 2020-05-18 | Heavy truck knuckle processing technology |
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Cited By (2)
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| CN112453830A (en) * | 2020-10-28 | 2021-03-09 | 成都飞机工业（集团）有限责任公司 | Horizontal machining method for rotating shaft beam |
| CN113084469A (en) * | 2021-05-06 | 2021-07-09 | 瑞安市联众汽车零部件有限公司 | Processing technology of steering knuckle of off-road vehicle |
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| CN111546013B (en) | 2022-03-04 |
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Effective date of registration: 20230117 Address after: Xidun Qiu 1st, 2nd, 3rd and Xujia Village, Suncun Town, High-tech Zone, Jinan City, Shandong Province, 250000 Patentee after: CNHTC (Jinan) Axle Co.,Ltd. Address before: Shengjing tangwangshan Road North Panwang Road West, Zhangqiu City, Jinan City, Shandong Province 250200 Patentee before: China National Heavy Duty Truck Group Jinan Power Co.,Ltd. |