Device for reducing hole site milling burrs of multi-cavity and multi-step ribbed aluminum profile

Abstract

A device for reducing hole site milling burrs of a multi-cavity and multi-step ribbed aluminum profile is characterized in that a plurality of rotating shaft seats are mounted on a rack of the device, a rotating shaft is mounted on each rotating shaft seat, a milling cutter is mounted at one end of each rotating shaft, a transmission wheel is mounted at the other end of each rotating shaft, and the transmission wheels are connected with a milling motor above through a transmission chain; the driving belt pulley is mounted on a rotating shaft of the motor, and the driving belt pulley and the motor are connected through a transmission belt. The aluminum profile machining device is specially used for machining aluminum profiles which are provided with a plurality of large-size machining holes and are complex in appearance, machining efficiency is high, and machining time is greatly shortened; and moreover, the clamped profile is stable and does not slip, a large amount of cooling liquid can be injected into the milling part during milling, and the milling quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material processing, in particular to a device for reducing milling burrs on holes of multi-cavity and multi-step ribbed aluminum profiles. Background Art

[0002] In recent years, due to the requirement of lightweight, all parts of the whole vehicle have been made of aluminum, especially aluminum profiles, which have multiple closed cavities and are produced by hot extrusion. They have good rigidity and precise cross-sectional dimensions and are used in various beams of the vehicle body. The number of assembly holes on the aluminum profile beam is large and dense, and the use of a single processing head in a machining center can no longer meet the needs of processing efficiency. Therefore, the use of multi-head processing equipment for simultaneous processing of multiple holes is an inevitable demand and trend in processing.

[0003] In the aluminum profile of automobile beams, due to the thick wall thickness of aluminum profiles, many reinforcing ribs in the cavity, large processing hole size, complex beam cross-section and other factors, the beam processing process has the following difficulties: 1. Difficult clamping, the beam cannot be stably clamped using traditional two-sided clamping tooling; 2. Due to the large processing hole size, large cutting volume, long processing time and low processing efficiency. 3. Due to the large cutting volume, the cutting fluid is not cooled properly, resulting in many milling burrs in the milling hole and uneven hole walls, which affects the assembly of subsequent parts. Utility Model Content

[0004] The purpose of the utility model is to provide a device for reducing milling burrs on the holes of multi-cavity, multi-step and ribbed aluminum profiles. The device is specially used for processing aluminum profiles with multiple large-sized processing holes and complex shapes. The processing efficiency is high and the processing time is greatly reduced. The clamping profile is stable and does not slip. A large amount of coolant can be injected into the milling part during milling, which can improve the quality of the milling process.

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

[0006] A device for reducing milling burrs on holes of multi-cavity, multi-step, ribbed aluminum profiles. A plurality of rotating shaft seats are installed on a device frame. A rotating shaft is installed on each rotating shaft seat. A milling tool is installed on one end of the rotating shaft, and a transmission wheel is installed on the other end. The transmission wheel is connected to an upper milling motor through a transmission chain. The transmission wheel is a passive pulley, and an active pulley is installed on the motor shaft. The two are connected through a transmission belt.

[0007] Several parallel slide rails are installed on the frame, and the feed platform is connected to the slide rails by sliding blocks. Several rear clamps are fixed on the feed platform, and several front clamp cylinders are also installed on the feed platform. Front clamps are installed on the ends of the piston rods of the front clamp cylinders, and the profiles are clamped and fixed by the rear clamps and front clamps. The aluminum profiles are fixed on the feed platform, and the milling process of the aluminum profiles is realized by feeding the feed platform to the milling tool.

[0008] The core of the rotating shaft passes through the coolant delivery pipe, the rear end of the coolant delivery pipe is connected to the coolant passage through a rotating joint, and the front end of the coolant delivery pipe passes through the end of the rotating shaft.

[0009] Since aluminum profiles have complex multi-cavities, the milling tool has a large cutting depth during milling, and the milling tool head generates a lot of heat when processing inside the aluminum profile. The coolant sprayed from the outer side of the milling processing part can only cool the surface of the aluminum profile, but cannot really cool the milling part, causing the aluminum material to soften and deform, forming burrs. In this patent, the coolant does not cool the profile surface through the traditional path, but uses a rotary joint and a coolant delivery pipe to directly pass the coolant from the core passage of the tool shaft, through the drilling and milling tool with a central outlet hole, and inject it into the processing end, so that the coolant directly cools the milling position, making the wall of the processed hole smooth and burr-free.

[0010] The feeding platform is provided with a gantry, on which a plurality of downward pressure cylinders are provided, and pressure heads are installed at the ends of piston rods of the downward pressure cylinders. The downward pressure cylinders press downwardly against the upper end surface of the aluminum profile, thereby limiting the upward and downward displacement of the aluminum profile.

[0011] A side positioning plate is arranged on one side of the feeding platform, and a side push cylinder is arranged on the other side. One end of the aluminum profile is pressed against the side positioning plate as a reference position, and the other end is pressed tight by the side push cylinder to realize the length direction positioning of the aluminum profile.

[0012] The frame is provided with a moving motor, the rotating shaft of the moving motor is connected to the screw rod, the central screw hole of the screw block is threadedly connected to the screw rod, the end of the screw rod is rotatably connected to the bearing seat, and the bearing seat is installed on the frame. The moving motor is installed on the frame to provide power for the feeding platform to move. The moving motor drives the screw rod to rotate, and then drives the screw block to achieve horizontal movement. The feeding platform is fixedly connected to the screw block, and finally the feeding platform realizes feeding movement.

[0013] The utility model fixes the aluminum profile by a feeding platform, and processes the processing holes on the aluminum profile by a plurality of milling cutter heads at the same time, without the need to process them one by one, thus greatly improving the processing efficiency.

[0014] The cooling system of the utility model adopts the form of passing coolant through the core of the rotating shaft, and the coolant can be directly injected into the deep hole processing position for cooling, thereby preventing the situation of insufficient cooling and poor cooling effect, and making the hole wall of the processed hole smooth and free of burrs.

[0015] The utility model provides a multi-directional positioning and clamping device on the feeding platform to position and clamp the aluminum profile, thereby keeping the aluminum profile stable and not displaced, and further ensuring the accuracy of the processing hole position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the exterior elevation structure diagram of the utility model;

[0017] Figure 2for Figure 1 The enlarged structure diagram at position Ⅰ in the middle;

[0018] Figure 3 This is the exterior elevation structure diagram of the utility model; (the outer shell and two milling motors are hidden)

[0019] Figure 4 This is the elevation structure diagram of the feeding platform;

[0020] Figure 5 for Figure 4 The enlarged structural diagram at middle Ⅱ;

[0021] Figure 6 This is the structural diagram of the milling motor and the rotating shaft seat components;

[0022] Figure 7 It is the structural diagram of the central section of the rotating shaft seat;

[0023] The serial numbers and component names in the figure are: 1-milling motor; 2-rotating shaft seat; 21-rotating shaft; 22-rotating joint; 23-coolant delivery pipe; 3-feeding platform; 31-slide rail; 32-moving motor; 33-screw rod; 34-gantry; 4-downward pressure cylinder; 51-rear clamping plate; 52-front clamping cylinder; 53-front clamping plate; 54-side top cylinder; 55-side positioning plate; 6-profile; 7-aluminum chip groove. DETAILED DESCRIPTION Example 1

[0024] A device for reducing milling burrs on holes of multi-cavity, multi-step, ribbed aluminum profiles, wherein five rotating shaft seats 2 are installed on a device frame, a rotating shaft 21 is installed on each rotating shaft seat 2, a milling tool is installed on one end of the rotating shaft 21, and a transmission wheel is installed on the other end, and the transmission wheel is connected to a milling motor 1 above through a transmission chain;

[0025] Two parallel slide rails 31 are installed on the frame, and the feed platform 3 is slidably connected on the slide rails 31 through a slider. Four rear clamping plates 51 are fixedly arranged on the feed platform 3. Two front clamping cylinders 52 are also arranged on the feed platform 3. The front clamping plate 53 is installed at the end of the piston rod of the front clamping cylinder 52, and the profile 6 is clamped and fixed by the rear clamping plate 51 and the front clamping plate 53.

[0026] The core of the rotating shaft 21 passes through the coolant delivery pipe 23 , the rear end of the coolant delivery pipe 23 is connected to the coolant passage through a rotary joint 22 , and the front end of the coolant delivery pipe 23 passes through the end of the rotating shaft 21 .

[0027] A gantry 34 is arranged on the feeding platform 3 , and five downward pressing cylinders 4 are arranged on the gantry 34 . A pressure head is installed at the end of the piston rod of the downward pressing cylinder 4 .

[0028] A side positioning plate 55 is provided on one side of the feeding platform 3 , and a side push cylinder 54 is provided on the other side.

[0029] The frame is provided with a movable motor 32, the rotating shaft of the movable motor 32 is connected with a screw rod 33, the central thread hole of the thread block is threadedly connected with the screw rod 33, the end of the screw rod 33 is rotatably connected with a bearing seat, and the bearing seat is installed on the frame.

Claims

1. A device for reducing milling burrs on holes of multi-cavity, multi-step, ribbed aluminum profiles, characterized in that: A plurality of rotating shaft seats (2) are installed on the device frame, a rotating shaft (21) is installed on each rotating shaft seat (2), a milling tool is installed at one end of the rotating shaft (21), and a transmission wheel is installed at the other end, and the transmission wheel is connected to the milling motor (1) above through a transmission chain; A plurality of parallel slide rails (31) are installed on the frame, the feed platform (3) is slidably connected to the slide rails (31) via a slider, a plurality of rear clamping plates (51) are fixedly arranged on the feed platform (3), a plurality of front clamping cylinders (52) are also arranged on the feed platform (3), a front clamping plate (53) is installed at the end of the piston rod of the front clamping cylinder (52), and the profile (6) is clamped and fixed by the rear clamping plates (51) and the front clamping plates (53).

2. The device for reducing milling burrs on holes of multi-cavity, multi-step, ribbed aluminum profiles according to claim 1, characterized in that: The core of the rotating shaft (21) passes through the coolant delivery pipe (23); the rear end of the coolant delivery pipe (23) is connected to the coolant passage through a rotating joint (22); and the front end of the coolant delivery pipe (23) passes through the end of the rotating shaft (21).

3. The device for reducing milling burrs on holes of multi-cavity, multi-step and ribbed aluminum profiles according to claim 1 is characterized in that: A gantry (34) is arranged on the feeding platform (3), a plurality of downward pressure cylinders (4) are arranged on the gantry (34), and a pressure head is installed at the end of the piston rod of the downward pressure cylinder (4).

4. The device for reducing milling burrs on holes of multi-cavity, multi-step and ribbed aluminum profiles according to claim 1 is characterized in that: A side positioning plate (55) is provided on one side of the feeding platform (3), and a side push cylinder (54) is provided on the other side.

5. The device for reducing milling burrs on holes of multi-cavity, multi-step and ribbed aluminum profiles according to claim 1, characterized in that: A moving motor (32) is installed on the frame, the rotating shaft of the moving motor (32) is connected to a screw rod (33), the central thread hole of the screw block is threadedly connected to the screw rod (33), the end of the screw rod (33) is rotatably connected to a bearing seat, and the bearing seat is installed on the frame.

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