CN214024572U

CN214024572U - Tool for machining lower cross arm of automobile

Info

Publication number: CN214024572U
Application number: CN202022045246.4U
Authority: CN
Inventors: 李开放
Original assignee: Xi'an Qiancheng Aviation Precision Manufacturing Co ltd
Current assignee: Xi'an Qiancheng Aviation Precision Manufacturing Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-08-24
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a tool for processing a lower cross arm of an automobile, which comprises a base, wherein a first supporting block is arranged on the base, an adjusting bolt is screwed in a central hole of the first supporting block, a round platform is fixedly connected to the top of the adjusting bolt, and the adjusting bolt and the round platform are used for horizontally placing the cylindrical end surface of the lower cross arm; the base is also provided with two positioning blocks which are respectively positioned below the two support legs of the lower transverse arm, the center of the top of each positioning block is provided with a positioning hole, and the positioning holes are matched with the process bosses which are preset on the two support legs of the lower transverse arm; and finally, a plurality of pressing devices for pressing and fastening the fixed lower cross arm are also arranged. The utility model discloses the frock has solved prior art processing down the xarm difficult fixed, easily rocks in the course of working, leads to the problem that the machining precision is low, and this frock can be fixed a position and press from both sides tightly the xarm down well, improves the machining precision, and simple structure, and the practicality is strong, easily popularizes.

Description

Tool for machining lower cross arm of automobile

Technical Field

The utility model belongs to the technical field of machining, concretely relates to frock for processing xarm under car.

Background

The automobile chassis is a combination of a transmission system, a running system, a steering system and a braking system on an automobile, supports and installs an automobile engine and parts and assemblies thereof to form the integral shape of the automobile, bears the power of the engine and ensures normal running.

The lower cross arm is used as one of key parts of an automobile chassis, has the important functions of supporting an automobile body in a matching way with other parts and arranging and installing a shock absorber and a spring, forms a set of complete suspension system through the tacit matching with the shock absorber and the spring, is responsible for supporting weight and steering, and has the advantages of generally complex structure, strict requirement on dimensional tolerance and high processing difficulty. In the production process of the lower cross arm, the section of the lower cross arm needs to be milled and bored, the lower cross arm is in an irregular curved surface structure as shown in the attached figure 1 of the specification, the lower cross arm comprises a cylindrical end A1, a middle end A2 and two support feet A3, and each part needs to be positioned and clamped when the lower cross arm is installed. The existing special fixture for the lower cross arm is omitted, so that the lower cross arm can shake in the milling and boring polishing processes, the milling quality is affected, and the product yield is low.

In view of the above, the present invention provides a tooling for machining a lower cross arm of an automobile, so as to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that exists among the prior art, the utility model aims to provide a frock for processing xarm under car can carry out the location clamp tightly to xarm down through this frock, and the product does not rock in the course of working, guarantees its machining precision, improves the yield of product.

The to-be-solved technical problem of the utility model is realized through following technical scheme: a tool for machining a lower cross arm of an automobile comprises a base, wherein a first supporting block is arranged on the base, an adjusting bolt is screwed in a central hole of the first supporting block, a round platform is fixedly connected to the top of the adjusting bolt, and the adjusting bolt and the round platform are used for horizontally placing the cylindrical end surface of the lower cross arm;

two positioning blocks are arranged on the base and far away from the first supporting block at intervals, the two positioning blocks are respectively positioned below the two support legs of the lower cross arm, the top surface of each positioning block is an inclined surface, a positioning hole is formed in the center of the top of each positioning block, and the positioning holes are matched with process bosses which are arranged in advance at the bottoms of the two support legs of the lower cross arm;

the clamping device is arranged on the base, distributed on two sides of the first supporting block and one side of each positioning block and used for clamping and fixing the lower cross arm.

Furthermore, a second supporting block is arranged on the base and located below the side, protruding out of the middle end of the lower cross arm, and the top surface of the second supporting block is matched with a process convex surface preset on the lower cross arm.

Furthermore, the pressing device comprises a screw rod and a third supporting block which are vertically and fixedly arranged on the base, a nut is screwed on the screw rod, and a pressing plate is sleeved below the nut in the circumferential direction of the screw rod;

one end of the pressing plate is placed at the top end of the supporting block, the other end of the pressing plate is placed on the surface of the lower cross arm, and the position of the pressing plate is fixed by rotating the nut.

Furthermore, a first waist hole is formed at the joint of the pressing plate and the screw rod.

Further, evenly be provided with a plurality of second waist holes on the base, second waist hole and bolt assembly cooperation are used for fixed whole frock.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a frock for processing xarm under car, this frock sets up adjusting bolt and circle platform on first supporting block, be used for placing the cylinder terminal surface level of xarm under with the circle platform through adjusting bolt, secondly through the locating hole cooperation of the technology boss that sets up in advance on two stabilizer blades of xarm down with the locating piece top, xarm middle-end protrusion one side below still is provided with the second supporting shoe under in addition, this frock is placed the xarm level down through the multiple spot locate mode, at last the xarm under the closing device through a plurality of different positions is fixed, prevent that it from rocking, guarantee the machining precision.

Drawings

FIG. 1 is a schematic view of a lower cross arm structure;

FIG. 2 is a view showing the use state of the lower cross arm of the tooling of the utility model;

FIG. 3 is a front view of the utility model of the tooling for processing the lower cross arm in use;

FIG. 4 is a side view of the utility model of the tooling for processing the lower cross arm in use;

FIG. 5 is a plan view of the utility model of the tooling for processing the lower cross arm in use;

FIG. 6 is a schematic view of the structure of the tool of the present invention;

fig. 7 is a process structure of the lower cross arm of the present invention for matching processing and setting.

In the figure: 1. A base; 2. a first support block; 3. adjusting the bolt; 4. a circular platform; 5. a pressing device; 6. positioning blocks; 7. a second support block; 11. a second waist hole; 51. a screw; 52. a third support block; 53. A nut; 54. pressing a plate; 61. positioning holes; 541. A first waist hole; A. a lower cross arm; a1, cylindrical end; a2, middle end; a3, two legs; a11, cylindrical end surface; a21, processing convex surface; a31, a process boss.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It is to be understood that such description is merely illustrative and not restrictive of the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Example (b): referring to fig. 2 to 7, the tool for machining the lower cross arm of the automobile comprises a base 1, wherein a first supporting block 2 is arranged on the base 1, an adjusting bolt 3 is screwed in a central hole of the first supporting block 2, a round platform 4 is fixedly connected to the top of the adjusting bolt 3, the round platform 4 is controlled to ascend or descend by rotating the adjusting bolt 3, when the cylindrical end surface a11 of the cross arm is completely contacted with the upper surface of the round platform 4, adjustment is stopped, and the cylindrical end surface a11 of the lower cross arm is in a horizontal placement state.

This embodiment is on base 1, it is provided with two locating pieces 6 to keep away from first supporting block 2 interval, two locating pieces 6 are located two stabilizer blades A3 of lower xarm under respectively, the top surface of every locating piece 6 is the inclined plane, the angle on inclined plane matches with the angle of lower xarm, and locating hole 61 has been seted up at the top center of locating piece 6, locating hole 61 cooperates with the technology boss A31 that sets up in advance in two stabilizer blades A3 bottoms of lower xarm, cooperation through two locating holes 61 and technology boss A31 and cylinder end A11 and round platform 4, realize three point location, be about to irregular lower xarm A level and place, conveniently carry out the finish machining.

As shown in fig. 2 and 6, the present embodiment includes a plurality of pressing devices 5, and the pressing devices 5 are disposed on the base 1, distributed on both sides of the first supporting block 2 and one side of each positioning block 6, and are used for pressing and fastening the lower cross arm.

Specifically, the pressing device 5 comprises a screw 51 and a third supporting block 52 which are vertically and fixedly arranged on the base 1, a nut 53 is screwed on the screw 51, and a pressing plate 54 is sleeved on the screw 51 in the circumferential direction and below the nut 53; one end of the pressing plate 54 is placed on the top end of the supporting block 52, the other end of the pressing plate 54 is placed on the surface of the lower cross arm A, and the position of the pressing plate 54 is fixed through the rotating nut 53, namely, the lower cross arm is completely fixed through four pressing devices 5 at different positions, so that the lower cross arm is prevented from shaking in the machining process.

Preferably, a first waist hole 541 is formed at the joint of the pressing plate 54 and the screw 51, so that the waist hole is convenient to detach, and the pressing plate can be adjusted to press the lower cross arm.

Preferably, because the lower cross arm is asymmetric in structure, unbalanced stress in the machining process is prevented, in this embodiment, the second supporting block 7 is arranged on the base 1, the second supporting block 7 is located below the protruding side of the middle end a2 of the lower cross arm, the top surface of the second supporting block 7 is matched with a process convex surface a21 which is preset on the lower cross arm, and through the arrangement of the second supporting block 7, stability and balanced stress in the machining process of the lower cross arm body are ensured, and the machining precision is further improved.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a frock for processing xarm under car which characterized in that: the adjustable cross arm comprises a base (1), wherein a first supporting block (2) is arranged on the base (1), an adjusting bolt (3) is screwed in a central hole of the first supporting block (2), a round platform (4) is fixedly connected to the top of the adjusting bolt (3), and the adjusting bolt (3) and the round platform (4) are used for horizontally placing a cylindrical end surface (A11) of a lower cross arm;

two positioning blocks (6) are arranged on the base (1) and far away from the first supporting block (2) at intervals, the two positioning blocks (6) are respectively positioned below two supporting feet (A3) of the lower cross arm, the top surface of each positioning block (6) is an inclined surface, a positioning hole (61) is formed in the center of the top of each positioning block (6), and the positioning holes (61) are matched with process bosses (A31) which are arranged at the bottoms of the two supporting feet (A3) of the lower cross arm in advance;

the fixing and fixing cross arm is characterized by further comprising a plurality of pressing devices (5), wherein the pressing devices (5) are arranged on the base (1), distributed on two sides of the first supporting block (2) and one side of each positioning block (6) and used for pressing and fastening the fixing and fixing cross arm.

2. The tool for machining the lower cross arm of the automobile as claimed in claim 1, wherein the tool comprises: the base (1) is provided with a second supporting block (7), the second supporting block (7) is located below the protruding side of the middle end (A2) of the lower cross arm, and the top surface of the second supporting block (7) is matched with a process convex surface (A21) which is preset on the lower cross arm.

3. The tool for machining the lower cross arm of the automobile as claimed in claim 1, wherein the tool comprises: the pressing device (5) comprises a screw rod (51) and a third supporting block (52), wherein the screw rod (51) and the third supporting block are vertically and fixedly arranged on the base (1), a nut (53) is screwed on the screw rod (51), and a pressing plate (54) is sleeved on the screw rod (51) in the circumferential direction and below the nut (53);

one end of the pressure plate (54) is placed at the top end of the third supporting block (52), the other end of the pressure plate (54) is placed on the surface of the lower cross arm, and the position of the pressure plate (54) is fixed by rotating the nut (53).

4. The tool for machining the lower cross arm of the automobile as claimed in claim 3, wherein the tool comprises: a first waist hole (541) is formed at the joint of the pressing plate (54) and the screw (51).

5. The tool for machining the lower cross arm of the automobile as claimed in claim 1, wherein the tool comprises: evenly be provided with a plurality of second waist hole (11) on base (1), second waist hole (11) and bolt assembly cooperation are used for fixed whole frock.