Fine milling clamp for automobile steering knuckle

Abstract

The utility model discloses an automobile steering knuckle finish-milling clamp, and relates to the technical field of automobile steering knuckle machining. The device comprises a bottom supporting plate, a fixing frame, fixing sleeves and lifting electric push rods, the fixing frame is arranged above the bottom supporting plate, the lifting electric push rods are arranged on the two sides of the fixing frame respectively, the two parallel fixing sleeves are fixed to the two sides of the inner wall of the fixing frame respectively, and the fixing sleeves are fixed to the middles of the front portion and the rear portion of the inner wall of the fixing frame respectively. A transverse electric push rod is fixed to the face, close to the inner wall of the fixing frame, in the fixing sleeve. Through the arrangement of the bottom supporting plate, the fixing frame, the fixing sleeve and the lifting electric push rod, the problems that an automobile steering knuckle finish-milling clamp is large in steering knuckle clamping area, prone to generating interference to milling and poor in milling applicability to different machining faces of steering knuckles are solved, and the machining efficiency of the automobile steering knuckle finish-milling clamp is improved. The finish-milling clamp for the automobile steering knuckle has the advantages that the area for clamping the steering knuckle is smaller, and the use convenience of the clamp for machining different surfaces of the steering knuckle is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile steering knuckle processing, in particular to a precision milling fixture for automobile steering knuckle. Background Art

[0002] The automobile steering knuckle is a key component of the automobile steering system. It is responsible for transmitting steering force and bearing the front load of the automobile to ensure the stable steering of the automobile. Precision milling is an important step in the manufacturing process of the steering knuckle. It involves the use of high-precision milling machines to perform precision machining of the steering knuckle material to achieve the design requirements of size and surface roughness. In the process of precision milling, quality control is crucial. Accurate control of processing parameters, correct selection and use of cutting tools, and strict testing and measurement procedures are all key factors to ensure that the steering knuckle reaches the design accuracy. In order to perform precision milling, a fixture is used to fix the blank on the workbench of the CNC machine tool to ensure stability and accuracy during processing. However, the fixture still has the following disadvantages in actual use:

[0003] When the automobile steering knuckle precision milling fixture is clamped, the steering knuckle needs to be placed on the fixture and then clamped by an additional structure. After clamping, a large area of ​​the steering knuckle is clamped by the fixture, resulting in the need to change the clamping position of some positions during milling, which is not convenient to operate;

[0004] During the operation of the automobile steering knuckle precision milling fixture, the steering knuckle is directly clamped and tightened. During the operation, after milling one surface of the steering knuckle, the steering knuckle needs to be loosened, then turned over, re-clamped, and then milled. It is not convenient to complete the complete milling of the steering knuckle. Utility Model Content

[0005] The utility model aims to provide a precision milling fixture for automobile steering knuckles. By arranging a bottom support plate, a fixed frame, a fixed sleeve and a lifting electric push rod, the utility model solves the problems that the precision milling fixture for automobile steering knuckles has a large clamping area for the steering knuckles, which easily interferes with the milling, and the fixture is not sufficiently applicable to the milling of different machining surfaces of the steering knuckles.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a kind of automobile steering knuckle precision milling fixture, comprising a bottom support plate, a fixed frame, a fixed sleeve and a lifting electric push rod, wherein a fixed frame is arranged above the bottom support plate, lifting electric push rods are arranged on both sides of the fixed frame, two mutually parallel fixed sleeves are fixed on both sides of the inner wall of the fixed frame, a fixed sleeve is fixed at the front and rear middle of the inner wall of the fixed frame, a transverse electric push rod is fixed on one side of the fixed sleeve close to the inner wall of the fixed frame, an inner movable sleeve is movably connected in the fixed sleeve, a U-shaped frame is fixed at one end of the inner movable sleeve close to the center of the fixed frame, and reinforcing Rib plate, a fixed column is vertically fixed on the horizontal part of the U-shaped frame, an annular groove is fixed on the peripheral side of the fixed column, an L-shaped fixed plate is fixed to the telescopic end of the lifting electric push rod, and a limiting plate is fixed to the bottom of the L-shaped fixed plate. When working, the fixed frame, the fixed sleeve and the lifting electric push rod are supported on them by the bottom support plate, and the fixed sleeve is fixed therein by the fixed frame. The U-shaped frame and the annular groove therein are driven by the transverse electric push rod in the fixed sleeve to move to clamp the steering knuckle of the car, and the limiting plate is driven to rise to abut the fixed frame by the lifting electric push rod, so that the fixed frame is abutted to balance, and the inner movable sleeve is connected to the fixed column through the U-shaped frame.

[0008] Furthermore, support rods are fixed in the middle of the two long side edges of the top of the bottom support plate, and the two support rods are symmetrically arranged with a center line parallel to the long sides of the top of the bottom support plate. A sleeve hole is opened through the upper inner part of the support rod, and the bottom support plate is movably connected to the rotating shaft through the sleeve hole on the support rod.

[0009] Furthermore, a rotating shaft is fixed in the middle of both end surfaces of the fixed frame, and both rotating shafts are inserted into the sleeve holes. A rotating frame is fixed to the end of the rotating shaft away from the fixed frame, and the fixed frame is inserted into the sleeve hole through the rotating shaft so that it is supported above the bottom support plate.

[0010] Furthermore, the end of the inner movable sleeve away from the inner center of the fixed frame is open, the transverse electric push rod is movably connected in the inner movable sleeve, the telescopic end of the transverse electric push rod is fixed to a side of the inner wall of the inner movable sleeve close to the center of the fixed frame, and the fixed sleeve is driven to move by the transverse electric push rod through the inner movable sleeve.

[0011] Furthermore, the two reinforcing ribs in the same U-shaped frame are both fixed on the circumference of the fixed column, the annular groove is arranged in the middle of the circumference of the fixed column, the U-shaped frame is connected to the annular groove through the fixed column, and the edge of the automobile steering knuckle is limited by the annular groove.

[0012] Furthermore, the two limiting plates are symmetrical to each other, and the tops of the limiting plates abut against the bottom edges of the fixed frame, so that the rotating frame is limited to be horizontal during operation.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the area of ​​the automobile steering knuckle clamped by the precision milling fixture is large and is easy to interfere with milling by arranging a bottom support plate, a fixing frame and a fixing sleeve. The utility model determines the size of the steering knuckle that needs precision milling, places the steering knuckle between all the U-shaped frames, aligns the edge of the steering knuckle with all the annular grooves, starts a transverse electric push rod, drives the inner movable sleeve to move, drives the U-shaped frame to move, so that the annular groove on the fixing column is clamped to the edge of the automobile steering knuckle that does not need milling, so that the steering knuckle is clamped during work, and the milling operation can be carried out after the steering knuckle is clamped, so that the area of ​​the automobile steering knuckle clamped by the precision milling fixture is smaller, and the interference with milling is smaller.

[0015] The utility model solves the problem that the automobile steering knuckle precision milling fixture is not sufficiently applicable to the milling of different machining surfaces of the steering knuckle by arranging a bottom support plate, a fixed frame and a lifting electric push rod. When the clamped steering knuckle needs to replace the surface that needs to be milled, the lifting electric push rod is started, and the lifting electric push rod drives the L-shaped fixed plate to descend. When the L-shaped fixed plate descends, the limit plate is driven to descend, so that the fixed frame can resume free rotation. When the fixed frame rotates freely, the rotating frame is rotated to drive the fixed frame to flip, and then the lifting electric push rod is started to drive the L-shaped fixed plate and the limit plate to rise, and rise to abut the bottom of the fixed frame through the limit plate, so that when working, the fixed frame is abutted to the horizontal and is well restricted. The automobile steering knuckle precision milling fixture is better applicable to the milling of different machining surfaces of the steering knuckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a stereoscopic diagram of the assembly structure of a precision milling fixture for an automobile steering knuckle;

[0018] Figure 2 It is a three-dimensional diagram of the bottom support plate structure;

[0019] Figure 3 It is a three-dimensional diagram of a fixed frame structure;

[0020] Figure 4 It is a three-dimensional diagram of the cross-sectional structure of the fixed sleeve;

[0021] Figure 5 It is a three-dimensional diagram of the lifting electric push rod structure.

[0022] Reference numerals:

[0023] 1. Bottom support plate; 101. Support rod; 102. Hole; 2. Fixed frame; 201. Rotating shaft; 202. Rotating frame; 3. Fixed sleeve; 301. Horizontal electric push rod; 302. Inner movable sleeve; 303. U-shaped frame; 304. Reinforcement ribs; 305. Fixed column; 306. Annular groove; 4. Lifting electric push rod; 401. L-shaped fixed plate; 402. Limit plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0025] See also Figure 1-4 The utility model is a kind of automobile steering knuckle precision milling fixture, comprising a bottom support plate 1, a fixed frame 2, a fixed sleeve 3 and a lifting electric push rod 4. The bottom support plate 1 is provided with a fixed frame 2 above. When the bottom support plate 1 is working, the fixed frame 2, the fixed sleeve 3 and the lifting electric push rod 4 are supported thereon, and the fixed sleeve 3 is fixed therein through the fixed frame 2. Lifting electric push rods 4 are provided on both sides of the fixed frame 2. The limiting plates 402 are driven by the lifting electric push rods 4 to rise to abut against the bottom of the fixed frame 2, and the two limiting plates 402 abut against the two edges of the bottom of the fixed frame 2, so that the fixed frame 2 is restricted in position and kept horizontal. Two fixing sleeves 3 parallel to each other are fixed on both sides of the inner wall of the fixed frame 2, and the fixing sleeves 3 are fixed in the middle of the front and rear of the inner wall of the fixed frame 2. The fixing sleeves 3 are fixed to the horizontal electric push rods 4 through the fixing sleeves 3. A movable push rod 301 is movably connected therein, and a transverse electric push rod 301 is fixed on one side of the fixed sleeve 3 close to the inner wall of the fixed frame 2. The inner movable sleeve 302 is driven to move by the transverse electric push rod 301, thereby driving the U-shaped frame 303 to move. An inner movable sleeve 302 is movably connected inside the fixed sleeve 3, and a U-shaped frame 303 is fixed on one end of the inner movable sleeve 302 close to the center of the fixed frame 2. Reinforcing ribs 304 are fixed at the two corners inside the U-shaped frame 303. When the inner movable sleeve 302 is pushed to move, the U-shaped frame 303 is driven to move. A fixed column 305 is vertically fixed on the horizontal part inside the U-shaped frame 303, and an annular groove 306 is fixed on the surrounding side of the fixed column 305. An L-shaped fixed plate 401 is fixed to the telescopic end of the lifting electric push rod 4, and a limiting plate 402 is fixed to the bottom of the L-shaped fixed plate 401.

[0026] Specifically, support rods 101 are fixed in the middle of the two long side edges of the top of the bottom support plate 1. The two support rods 101 are symmetrically arranged with a center line parallel to the long sides of the top of the bottom support plate 1. A sleeve hole 102 is opened through the upper inner part of the support rod 101. The bottom support plate 1 provides support for the fixed frame 2 through the support rod 101, and the support rod 101 is movably connected to the rotating shaft 201 through the sleeve hole 102.

[0027] Furthermore, a rotating shaft 201 is fixed in the middle of both end surfaces of the fixed frame 2, and both rotating shafts 201 are inserted into the sleeve holes 102. A rotating frame 202 is fixed to the end of one rotating shaft 201 away from the fixed frame 2. The rotating shaft 201 on the fixed frame 2 is inserted into the sleeve holes 102 on the two support rods 101, so that the fixed frame 2 is supported on the bottom support plate 1 through the support rods 101, and the fixed frame 2 is driven to rotate when the rotating frame 202 rotates.

[0028] Furthermore, one end of the inner movable sleeve 302 away from the inner center of the fixed frame 2 is opened, and the transverse electric push rod 301 is movably connected in the inner movable sleeve 302. The telescopic end of the transverse electric push rod 301 is fixed to a side of the inner wall of the inner movable sleeve 302 close to the center of the fixed frame 2. The fixed sleeve 3 supports the transverse electric push rod 301 therein through the inner movable sleeve 302, and when the transverse electric push rod 301 works, it pushes the inner movable sleeve 302 to move.

[0029] Furthermore, the two reinforcing ribs 304 in the same U-shaped frame 303 are both fixed on the circumference of the fixed column 305, and the annular groove 306 is set in the middle of the circumference of the fixed column 305. When the U-shaped frame 303 is pushed to move, the fixed column 305 and the annular groove 306 thereon are driven to move. When the fixed column 305 is working, the reinforcing ribs 304 are used to increase the connection strength between the U-shaped frame 303 and the fixed column 305. When working, the annular groove 306 is embedded with the edge of the steering knuckle that does not need to be processed. Multiple annular grooves 306 are embedded with the edge of the steering knuckle, so that the steering knuckle is confined in the fixed frame 2.

[0030] The operation process of this embodiment is as follows: when working, first determine the size of the steering knuckle that needs fine milling, put the steering knuckle between all the U-shaped frames 303, and align the edge of the steering knuckle with all the annular grooves 306, start the transverse electric push rod 301, the transverse electric push rod 301 drives the inner movable sleeve 302 to move, and drives the U-shaped frame 303 to move, so that the annular groove 306 on the fixed column 305 is stuck to the edge of the automobile steering knuckle that does not need milling, so that the steering knuckle is clamped during work, and after the steering knuckle is clamped, the milling operation can be carried out. Specific embodiment 2

[0031] See also Figure 1 , 25. On the basis of the specific embodiment 1, the two limit plates 402 are symmetrical to each other, and the top of the limit plate 402 abuts against the bottom edge of the fixed frame 2. During operation, when the clamped steering knuckle needs to replace the surface that needs to be milled, the lifting electric push rod 4 is started, and the lifting electric push rod 4 drives the L-shaped fixed plate 401 to descend. When the L-shaped fixed plate 401 descends, the limit plate 402 is driven to descend, so that the fixed frame 2 resumes free rotation. When the fixed frame 2 rotates freely, the rotating frame 202 is rotated to drive the fixed frame 2 to flip, and then the lifting electric push rod 4 is started to drive the L-shaped fixed plate 401 and the limit plate 402 to rise, and rise to abut the bottom of the fixed frame 2 through the limit plate 402, so that during operation, the fixed frame 2 is abutted to the horizontal and is well restricted.

[0032] The operation process of this embodiment is as follows: during operation, when the clamped steering knuckle needs to replace the surface that needs milling, the lifting electric push rod 4 is started, and the lifting electric push rod 4 drives the L-shaped fixed plate 401 to descend. When the L-shaped fixed plate 401 descends, the limit plate 402 is driven to descend, so that the fixed frame 2 resumes free rotation. When the fixed frame 2 rotates freely, the rotating frame 202 is rotated to drive the fixed frame 2 to flip, and then the lifting electric push rod 4 is started to drive the L-shaped fixed plate 401 and the limit plate 402 to rise, and rise through the limit plate 402 to abut the bottom of the fixed frame 2, so that during operation, the fixed frame 2 is abutted to the horizontal and is well restricted.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision milling fixture for an automobile steering knuckle, comprising a bottom support plate (1), a fixing frame (2), a fixing sleeve (3) and a lifting electric push rod (4), characterized in that: A fixed frame (2) is arranged above the bottom support plate (1), and lifting electric push rods (4) are arranged on both sides of the fixed frame (2), and two mutually parallel fixed sleeves (3) are fixed on both sides of the inner wall of the fixed frame (2), and the fixing sleeves (3) are fixed in the middle of the front and rear of the inner wall of the fixed frame (2), and a transverse electric push rod (301) is fixed on a side of the fixed sleeve (3) close to the inner wall of the fixed frame (2), and an inner movable sleeve (302) is movably connected to the fixed sleeve (3), and the inner movable sleeve (302) is movably connected to the inner wall of the fixed frame (2). A U-shaped frame (303) is fixed to one end of the sleeve (302) close to the center of the fixed frame (2), and reinforcing ribs (304) are fixed to two corners inside the U-shaped frame (303). A fixing column (305) is vertically fixed to the horizontal portion inside the U-shaped frame (303), and an annular groove (306) is fixed to the circumference of the fixing column (305). An L-shaped fixing plate (401) is fixed to the telescopic end of the lifting electric push rod (4), and a limiting plate (402) is fixed to the bottom of the L-shaped fixing plate (401).

2. The automobile steering knuckle precision milling fixture according to claim 1 is characterized in that: Support rods (101) are fixed in the middle of the two long side edges of the top of the bottom support plate (1), and the two support rods (101) are symmetrically arranged with a center line parallel to the long sides of the top of the bottom support plate (1), and a sleeve hole (102) is opened through the upper inner part of the support rod (101).

3. The automobile steering knuckle precision milling fixture according to claim 2 is characterized in that: A rotating shaft (201) is fixed in the middle of both end surfaces of the fixed frame (2), and both rotating shafts (201) are inserted into the sleeve holes (102). A rotating frame (202) is fixed to one end of the rotating shaft (201) away from the fixed frame (2).

4. The automobile steering knuckle precision milling fixture according to claim 1, characterized in that: One end of the inner movable sleeve (302) away from the inner center of the fixed frame (2) is open, the transverse electric push rod (301) is movably connected in the inner movable sleeve (302), and the telescopic end of the transverse electric push rod (301) is fixed to a surface of the inner wall of the inner movable sleeve (302) close to the center of the fixed frame (2).

5. The automobile steering knuckle precision milling fixture according to claim 1, characterized in that: The two reinforcing ribs (304) in the same U-shaped frame (303) are both fixed to the circumference of the fixing column (305), and the annular groove (306) is arranged in the middle of the circumference of the fixing column (305).

6. The automobile steering knuckle precision milling fixture according to claim 1, characterized in that: The two limiting plates (402) are symmetrical to each other, and the tops of the limiting plates (402) abut against the bottom edges of the fixing frame (2).

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