Four-axis precision machining light equipment special for polyhedral light alloy profiles

Abstract

The equipment comprises a rotating base and a machining center, the two ends of the rotating base are connected with a driving index plate and a driven index plate through chucks correspondingly, a plurality of rotating air cylinder clamps A and rotating air cylinder clamps B for reverse clamping are arranged in the middle of the rotating base, and the positions of the rotating air cylinder clamps A and the rotating air cylinder clamps B correspond to the middle of a beam body of an anti-collision beam; and the positions of the rotary cylinder clamps C correspond to the side surfaces of the connecting columns of the anti-collision beam. The aluminum anti-collision beam multi-face machining center can be used for multi-face machining of an aluminum anti-collision beam, particularly machining of arc face radial holes, the machining efficiency and accuracy are almost the same as those of a five-axis machining center, the machining cost of anti-collision beam profiles is greatly reduced, and the machining efficiency of the anti-collision beam profiles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component processing, in particular to a light equipment specially used for four-axis precision processing of multi-faceted light alloy profiles. Background Art

[0002] In recent years, the proportion of lightweight passenger car parts has gradually increased. Replacing the original steel vehicle parts with high-strength aluminum alloys is the future trend of the automotive manufacturing industry; especially in the rapid development stage of new energy vehicles with an increasing proportion, the aluminum alloying of various beam parts in the car is also inevitable. As an important beam in the vehicle, the anti-collision beam is located at the front and rear ends of the new energy vehicle. When the vehicle collides, it can absorb the energy of the collision and play a role in protecting the body.

[0003] The anti-collision beam is made of hollow aluminum alloy profiles, including an arc-shaped beam body and connecting columns at both ends of the beam body. Several processing holes are processed on the connecting columns and fixedly connected to the vehicle chassis through bolts and other fasteners. Various auxiliary parts also need to be installed in all directions on the beam body. Therefore, up to dozens of through holes need to be pre-processed around the anti-collision beam profile. In the conventional drilling and milling processing of polyhedral aluminum alloy parts, the following methods can be selected: 1. One-time clamping and positioning can be adopted, and multiple faces can be processed by a five-axis machining center to ensure that the position of the processing holes on each face is accurate and without deviation; however, the procurement cost of the five-axis machining center is high, resulting in high processing costs allocated to each anti-collision beam product; 2. Using an ordinary CNC machining center, each face is re-clamped and positioned before processing. However, although this processing method has a low processing equipment cost, it requires the operator to clamp multiple times, which greatly affects the processing efficiency. In addition, multiple clamping and positioning will also cause errors in the positional relationship between the various processing faces, affecting the installation accuracy during vehicle assembly. 3. Since the anti-collision beam is arc-shaped, the processing direction of the processing holes on it requires radial feed. In addition to the five-axis machining center, a low-cost implementation method that can achieve this direction of feed can also be selected: a three-axis machining center equipped with a side milling angle head. However, the installation of the side milling angle head requires manual installation on the spindle after completing other processing holes, which is not only cumbersome and affects efficiency, but also causes a decrease in processing accuracy. Summary of the invention

[0004] The purpose of the utility model is to provide a lightweight equipment specially used for four-axis precision machining of multi-sided light alloy profiles. It can be used for multi-sided machining of aluminum anti-collision beams, especially the machining of arc radial holes. The machining efficiency and accuracy are almost the same as those of a five-axis machining center, which greatly reduces the machining cost of anti-collision beam profiles and improves the machining efficiency of anti-collision beam profiles.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] The light equipment is specially used for four-axis precision machining of multi-sided light alloy profiles. The equipment includes a rotating base and a machining center. The two ends of the rotating base are connected to the active indexing plate and the driven indexing plate through chucks respectively. A number of rotating cylinder clamps A and reverse-clamping rotating cylinder clamps B are arranged in the middle of the rotating base, and their positions correspond to the middle of the beam body of the anti-collision beam. Rotating cylinder clamps C are arranged at both ends of the rotating base, and their positions correspond to the sides of the connecting columns of the anti-collision beam.

[0007] The indexing plates at both ends are CNC indexing plates, also known as CNC turntables. The active indexing plate is driven by a servo motor, which is synchronously controlled by the PLC of the processing equipment. The driven indexing plate has no power drive. Both the active indexing plate and the driven indexing plate are connected to the hydraulic pipeline and braked by hydraulic pressure.

[0008] The chuck of the active indexing plate is connected to one end of the base through a T-shaped key and a keyway; the chuck of the driven indexing plate is connected to the other end of the base through a T-shaped key and a keyway. The chuck drives the base to rotate, and by rotating and fixing different processing surfaces upward, the milling cutter of an ordinary CNC milling machine can process various processing surfaces of the aluminum profile from top to bottom.

[0009] The rotary cylinder is composed of a rotary cylinder and a horizontal chuck. When the cylinder loosens the profile, the chuck deviates to one side to avoid obstruction in loading and unloading of the workpiece.

[0010] The two ends of the rotating base are respectively provided with a push-up cylinder, and a support plate is provided opposite to the push-up cylinder. The position of the piston rod pressure head of the push-up cylinder corresponds to the upper surface of the beam body of the anti-collision beam, and the position of the support plate corresponds to the lower end surface of the connecting column of the anti-collision beam. The push-up cylinder presses the profile against the support plate to prevent displacement or vibration during the processing of the profile. The support plate is provided with a notch at the position to be processed so as not to hinder the milling of the milling cutter.

[0011] The two ends of the rotating base are respectively provided with a downward clamp, which is driven by a cylinder, and the clamping part is a lever-type clamp. The clamping part of the lever-type clamp is the side of the connecting column. The advantage of the lever-type clamp is that the clamp opens and closes vertically, does not interfere with other positions, has a strong clamping force, and moves quickly.

[0012] The two ends of the rotating base are respectively provided with positioning pins, and the positions of the positioning pins correspond to the reference holes on the upper surface of the beam body of the anti-collision beam. The positioning pins locate the basic position of the anti-collision beam, and all the processing holes are processed based on this as the reference.

[0013] A B-axis rotary head is added to the spindle box of the machining center, and the machining tool is installed on the B-axis rotary head. The entire machining equipment is: a vertical light CNC milling machine (B-axis rotary head) + a dividing rotary base. The formed machining system can complete the anti-collision beam that originally required a five-axis machining center to process. When radial machining of the arc surface is required, the B-axis rotary head deflects the angle and controls the machining center spindle to feed in the radial direction to complete the machining; this greatly reduces the machining cost, and the machining efficiency and accuracy are exactly the same as those of a five-axis machining center.

[0014] Advantages of the utility model

[0015] 1. The utility model changes the processing of multiple surfaces of aluminum alloy anti-collision beams: using a vertical three-axis machining center + multiple face-changing clamping; or using a vertical three-axis machining center + a rotating base + a side milling angle head; to a processing method of a vertical light CNC milling machine (B-axis rotating head) + a rotating base; not only does it realize the one-time clamping processing of multiple surfaces and multiple holes of the anti-collision beam, but it can also complete the processing of arc surface radial processing holes at one time; this move greatly reduces the production cost relative to the equipment investment of the five-axis machining center; and greatly improves the production accuracy and production efficiency compared to the traditional form.

[0016] 2. The fixture of the utility model is specially used for the production of aluminum anti-collision beams, with high clamping stability, fast action and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural elevation diagram of the clamping tooling of the utility model;

[0018] Figure 2 for Figure 1 The enlarged structure diagram of position Ⅰ in the middle;

[0019] Figure 3 This is the main structural diagram of the clamping tool of the utility model;

[0020] Figure 4 This is a top view of the structure of the clamping tooling of the utility model;

[0021] Figure 5 This is a schematic diagram of the processing state of the utility model;

[0022] Figure 6 This is the appearance picture of the aluminum anti-collision beam;

[0023] Figure 7 This is the side view of the aluminum anti-collision beam;

[0024] The serial numbers and component names in the figure are: 1-motor; 11-active indexing plate; 12-driven indexing plate; 2-rotating base; 21-rotating cylinder clamp A, 22-rotating cylinder clamp B; 23-lifting cylinder; 24-rotating cylinder clamp C; 25-down pressure clamp, 26-supporting top plate; 27-locating pin; 3-anti-collision beam; 31-beam body; 32-connecting column; 4-spindle box; 41-B-axis rotating head. DETAILED DESCRIPTION Example 1

[0025] The light equipment is specially used for four-axis precision machining of multi-faceted light alloy profiles. The equipment includes a rotating base 2 and a machining center. The two ends of the rotating base 2 are connected to the active indexing plate 11 and the driven indexing plate 12 through chucks respectively. A rotating cylinder clamp A21 and four reverse-clamping rotating cylinder clamps B22 are arranged in the middle of the rotating base 2, and their positions correspond to the middle of the beam body 31 of the anti-collision beam 3. Rotating cylinder clamps C24 are arranged at both ends of the rotating base 2, and their positions correspond to the sides of the connecting column 32 of the anti-collision beam 3.

[0026] A pushing cylinder 23 is respectively arranged at both ends of the rotating base 2, and a supporting plate 26 is arranged opposite to the pushing cylinder 23. The position of the piston rod pressure head of the pushing cylinder 23 corresponds to the upper surface of the beam body 31 of the anti-collision beam 3, and the position of the supporting plate 26 corresponds to the lower end surface of the connecting column 32 of the anti-collision beam 3.

[0027] The two ends of the rotating base 2 are respectively provided with a pressing clamp 25, which is driven by a cylinder and has a lever-type clamp as a clamping part.

[0028] Positioning pins 27 are respectively disposed at both ends of the rotating base 2 , and the positions of the positioning pins 27 correspond to the reference holes on the upper surface of the beam body 31 of the anti-collision beam 3 .

[0029] A B-axis rotating head 41 is additionally provided on the spindle box 4 of the machining center, and a machining tool is mounted on the B-axis rotating head 41 .

Claims

1. Specially used for four-axis precision machining of multi-sided light alloy profiles, characterized by: The equipment comprises a rotating base (2) and a machining center. The two ends of the rotating base (2) are respectively connected to an active indexing plate (11) and a driven indexing plate (12) through chucks. A plurality of rotating cylinder clamps A (21) and reversely clamped rotating cylinder clamps B (22) are arranged in the middle of the rotating base (2), and their positions correspond to the middle of a beam body (31) of an anti-collision beam (3). Rotating cylinder clamps C (24) are respectively arranged at the two ends of the rotating base (2), and their positions correspond to the side of a connecting column (32) of the anti-collision beam (3).

2. According to claim 1, the light equipment specially used for four-axis precision machining of multi-faceted light alloy profiles is characterized by: A push-up cylinder (23) is respectively arranged at both ends of the rotating base (2), and a support plate (26) is arranged opposite to the push-up cylinder (23); the position of the piston rod pressure head of the push-up cylinder (23) corresponds to the upper surface of the beam body (31) of the anti-collision beam (3), and the position of the support plate (26) corresponds to the lower end surface of the connecting column (32) of the anti-collision beam (3).

3. According to claim 1, the light equipment specially used for four-axis precision machining of multi-faceted light alloy profiles is characterized by: Downward pressing clamps (25) are respectively arranged at both ends of the rotating base (2), the downward pressing clamps are driven by a cylinder, and the clamping part is a lever-type clamp.

4. According to claim 1, the light equipment specially used for four-axis precision machining of multi-faceted light alloy profiles is characterized by: Positioning pins (27) are respectively provided at both ends of the rotating base (2), and the positions of the positioning pins (27) correspond to reference holes on the upper surface of the beam body (31) of the anti-collision beam (3).

5. According to claim 1, the light equipment specially used for four-axis precision machining of multi-faceted light alloy profiles is characterized by: A B-axis rotating head (41) is added to the spindle box (4) of the machining center, and a machining tool is mounted on the B-axis rotating head (41).

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