Double-milling-head numerical control milling machine

Abstract

The utility model relates to a double-milling-head numerical control milling machine, which belongs to the technical field of numerical control milling machine equipment and comprises a conveying base, a lifting transmission seat, two milling cutter driving seats and two quick-release milling cutter components. The material conveying base is used for conveying workpieces, the lifting transmission seat is used for driving the milling cutter driving seat to ascend and descend, the milling cutter driving seat is used for driving the quick-release milling cutter assembly, and the quick-release milling cutter assembly is used for milling the workpieces. And the clamping connection of the elastic telescopic rod and the fixing groove is improved, so that the milling cutter head is quickly disassembled and assembled. Compared with a traditional milling machine which needs to use complex tools and replace cutters for a long time, the scheme has the advantages that the cutter replacement time is greatly shortened, the machining efficiency is remarkably improved, and the downtime of equipment is shortened.

Description

Technical Field

[0001] This utility model belongs to the technical field of CNC milling equipment, specifically relating to a dual-head CNC milling machine. Background Technology

[0002] In the field of machining, CNC milling machines are widely used in aerospace, automobile manufacturing, mold processing and other industries as key equipment for achieving high-precision and high-efficiency machining. Dual-head CNC milling machines can further improve machining efficiency and productivity by having two milling heads work simultaneously, and have become an important development direction for modern machining equipment.

[0003] In the actual machining process of CNC milling machines, rapid tool change is a key factor affecting machining efficiency and cost. Existing quick-release tool structures generally have the following drawbacks: First, most quick-release structures rely on complex bolt tightening or pin positioning methods, requiring operators to use special tools such as wrenches and screwdrivers to complete the disassembly and installation of tools. The entire process is time-consuming, leading to increased equipment downtime and failing to meet the needs of modern high-efficiency machining. Therefore, those skilled in the art have provided a dual-head CNC milling machine to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed double-head CNC milling machine in order to solve the above problems.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: it includes a material conveying base, a lifting transmission base, two milling cutter drive bases, and two quick-release milling cutter assemblies; the material conveying base is used to convey workpieces, the lifting transmission base is used to drive the milling cutter drive bases to rise and fall, the milling cutter drive bases are used to drive the quick-release milling cutter assemblies, and the quick-release milling cutter assemblies are used to perform milling operations on the workpieces.

[0006] As a further optimization of this utility model, the material conveying base includes a first transmission seat, a first conveying seat, a second transmission seat, a second conveying seat, and an electric clamp; the first transmission seat is slidably connected to the top of the first conveying seat, the second transmission seat is mounted on the top of the first conveying seat, the second transmission seat is slidably connected to the top of the second conveying seat, and an electric clamp is provided on the top of the second conveying seat for clamping and conveying workpieces.

[0007] As a further optimization of this utility model, the lifting transmission seat includes a lifting drive motor, a second lead screw, and a lifting mounting plate; the lifting drive motor is installed on the top of the lifting transmission seat, and a lifting slide groove is opened on the front side wall. The second lead screw is rotatably connected in the lifting slide groove, and the lifting mounting plate is threadedly connected to the second lead screw and slides in the lifting slide groove to drive the milling cutter drive seat to rise and fall.

[0008] As a further optimization of this utility model, a third drive motor is installed on the top of the milling cutter drive base, and the output end of the third drive motor is connected to the drive pulley; a limiting shaft is rotatably connected to the top of the milling cutter drive base, and a driven pulley is sleeved on the outside of the limiting shaft; the drive pulley and the driven pulley are connected by a transmission belt; a limiting plate is installed at the bottom of the milling cutter drive base, and a limiting sleeve is provided inside the limiting plate.

[0009] As a further optimization of this utility model, the quick-release milling cutter assembly includes a mounting base, a limiting sleeve, a milling cutter head, a connecting piece, a quick-release piece, a rotating piece, and a drive shaft; the mounting base is fixed to the bottom of the limiting sleeve of the milling cutter drive base, the quick-release piece is rotatably connected to the inner side of the mounting base, the rotating piece is fixed to the bottom of the quick-release piece, the drive shaft is rotatably connected to the bottom of the rotating piece, the drive shaft is used to drive the milling cutter head, the limiting sleeve is installed at the bottom of the rotating piece, and the milling cutter head is rotatably connected inside the limiting sleeve.

[0010] As a further optimization of this utility model, the bottom of the connector is provided with a limiting quick-release groove and a fixing groove, and the quick-release component matches the limiting quick-release groove to realize the quick-release function; the top of the rotating component is equipped with an elastic telescopic rod, and the elastic telescopic rod is engaged with the fixing groove to fix the quick-release milling cutter assembly.

[0011] As a further optimization of this utility model, a through groove is provided at the top center of the mounting base, quick-release component, rotating component, and connecting component. The through groove allows the milling cutter head to rotate under the drive of the milling cutter drive seat, while other components do not rotate accordingly.

[0012] As a further optimization of this utility model, the output end of the limiting shaft passes through and is rotatably connected to the bottom of the limiting sleeve, and is connected to the input end of the drive shaft to transmit power to the drive shaft.

[0013] As a further optimization of this utility model, the two milling cutter drive seats are installed at the top middle rear side of the material conveying base, and the rear side walls of the two milling cutter drive seats are both installed on the lifting mounting plate to realize the lifting and driving functions of the dual milling heads.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves rapid disassembly and installation of the milling cutter head through the cooperation between the quick-release component and the limiting quick-release groove in the quick-release milling cutter assembly, as well as the improved engagement between the elastic telescopic rod and the fixing groove. Compared with the traditional milling machine that requires complex tools and a long tool change time, this solution significantly shortens the tool change time, significantly improves processing efficiency, and reduces equipment downtime.

[0016] 2. In this utility model, the through slots opened on the top of the mounting base, quick-release parts and other components allow the milling cutter head to rotate independently under the drive of the milling cutter drive base, avoiding energy loss and accuracy errors caused by the following movement of other components, ensuring the accuracy of milling and meeting the requirements of high-precision machining.

[0017] 3. This utility model, by setting a limiting bushing, rotatably connects the milling cutter head inside, providing stable radial support for the milling cutter head and limiting the radial offset that may occur during the rotation of the milling cutter. At the same time, the drive shaft is rotatably connected at the middle position of the bottom of the rotating part, ensuring the stability of the rotation center of the milling cutter head and reducing axial wobble. This multi-limiting and stable support structure can maintain the stability of the tool when it rotates rapidly, avoiding the impact of loosening or offset on machining accuracy. The through slots opened at the middle positions of the top of the mounting base, quick release part, rotating part, and connecting part allow the milling cutter head to rotate independently under the action of the drive end of the corresponding milling cutter drive seat, without other parts rotating together. This design reduces the influence of unnecessary transmission parts on the rotation of the tool and reduces the risk of tool offset caused by fit errors or loosening between parts. At the same time, the stable transmission system composed of the limiting shaft, driving pulley, driven pulley, and transmission belt accurately and smoothly transmits power to the drive shaft, further ensuring the stability and accuracy of the rotation of the milling cutter head. Attached Figure Description

[0018] Figure 1 This is a bottom view structural diagram of this utility model;

[0019] Figure 2 This is a schematic diagram of the axial side structure of this utility model;

[0020] Figure 3 This is a front view structural diagram of the present invention;

[0021] Figure 4 This is the utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 5 This is an exploded structural diagram of the quick-release milling cutter assembly of this utility model.

[0023] In the diagram: 1. Material conveying base; 101. First transmission seat; 102. First conveying seat; 103. Second transmission seat; 104. Second conveying seat; 105. Electric clamp; 2. Lifting transmission seat; 201. Lifting drive motor; 202. Second lead screw; 203. Lifting slide; 204. Lifting mounting plate; 3. Milling cutter drive seat; 301. Third drive motor; 302. Limiting shaft; 303. Drive pulley; 304. Transmission belt; 305. Driven pulley; 306. Limiting disc; 4. Quick-release milling cutter assembly; 401. Mounting seat; 402. Limiting bushing; 403. Milling cutter head; 404. Limiting fixing groove; 405. Limiting quick-release groove; 406. Fixing groove; 407. Connecting piece; 408. Elastic telescopic rod; 409. Quick-release piece; 410. Rotating piece; 411. Drive shaft. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 2 , Figure 3 As shown, this screw air compressor cooling device includes a material conveying base 1, a first transmission base 101 fixed to the ground or workbench base, a first conveying base 102 installed on the top of the first transmission base 101, and a servo motor driving the screw and nut mechanism of the first transmission base 101 to enable the first conveying base 102 to slide smoothly along the X-axis. A second transmission base 103 is installed at the middle position of the top of the first conveying base 102, also driven by a servo motor, so that the second transmission base 103 can drive the upper component to slide along the Y-axis. A second conveying base 104 is installed on the top of the second transmission base 103, and electric clamps 105 are respectively installed at the middle positions of the front and rear sides of the top of the second conveying base 104. The electric clamps 105 are controlled by a PLC to achieve precise clamping and releasing of the workpiece.

[0027] like Figure 2 , Figure 3 As shown, a lifting transmission seat 2 is installed at the rear middle position of the top of the material conveying base 1. A lifting drive motor 201 is fixed at the middle position of the top of the lifting transmission seat 2. A lifting slide groove 203 is opened at the middle of the front side wall near the upper end. A second lead screw 202 is installed in the lifting slide groove 203 so that the second lead screw 202 is connected to the output end of the lifting drive motor 201. The sliding end of the lifting mounting plate 204 is threadedly connected to the second lead screw 202 to ensure that the lifting mounting plate 204 can slide up and down along the Z-axis direction in the lifting slide groove 203.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, two milling cutter drive seats 3 are installed on the front side wall of the lifting mounting plate 204. Limiting shafts 302 are respectively connected and rotatably connected through the middle of the top of each milling cutter drive seat 3. A third drive motor 301 is installed on the middle of the top of the milling cutter drive seat 3 and on one side of the limiting shaft 302. The output end of the third drive motor 301 passes through the bottom of the milling cutter drive seat 3 and is connected to the drive pulley 303. Driven pulleys 305 are fixedly sleeved on the outer side wall of the limiting shaft 302 on both sides of the drive pulley 303. A transmission belt 304 is sleeved on the outer side wall of the drive pulley 303 and the driven pulley 305. At the same time, a limiting plate 306 is installed on the middle of the bottom of the milling cutter drive seat 3 and directly below the limiting shaft 302. A limiting sleeve is installed in the middle of the inner side wall of the limiting plate 306.

[0029] like Figure 1 , Figure 3 , Figure 5 As shown, a quick-release milling cutter assembly 4 is installed at the output end of each milling cutter drive seat 3. The top of the mounting seat 401 is fixed at the middle position of the bottom of the corresponding limiting sleeve. A quick-release component 409 is rotatably connected to the inner wall of the mounting seat 401. A rotating component 410 is fixedly installed at the middle of the bottom of the quick-release component 409. A drive shaft 411 is rotatably connected to the middle of the bottom of the rotating component 410. A limiting sleeve 402 is fixedly installed at the bottom of the rotating component 410 and at the position outside the milling cutter head 403, so that the milling cutter head 403 is rotatably connected to the inside of the limiting sleeve 402. A limiting quick-release groove 405 is opened at the middle position of the bottom of the connecting component 407, and a fixing groove 406 is opened at both sides of the middle position of the bottom. An elastic telescopic rod 408 is installed at the middle position of the front and rear sides of the top of the rotating component 410, so that the elastic telescopic rod 408 is engaged with the fixing groove 406, and the quick-release component 409 passes through the limiting quick-release groove 405. To achieve quick release and limiting, during operation, the workpiece is placed on the second conveyor seat 104, and the electric clamp 105 clamps the workpiece. The first transmission seat 101 and the second transmission seat 103 work together to transport the workpiece to the processing position. The lifting drive motor 201 is started, and the milling cutter drive seat 3 is adjusted to a suitable height. The third drive motor 301 drives the limiting shaft 302 to rotate through belt transmission, which in turn drives the drive shaft 411 and the milling cutter head 403 to rotate at high speed to perform milling on the workpiece. The thread tightening direction of the drive shaft 411 and the milling cutter head 403 is opposite to the rotation direction of the output end of the third drive motor 301. When it is necessary to replace the milling cutter head 403, the quick release part 409 is rotated to release the limiting and then it can be quickly replaced. After completion, it is reinstalled and a stable connection is achieved through the elastic telescopic rod 408 and the limiting quick release groove 405 to continue the processing operation.

[0030] Working principle: First, the material conveying base 1 undertakes the material conveying function. The first transmission base 101 drives the first conveying base 102 to slide. The second transmission base 103 on the first conveying base 102 then drives the second conveying base 104 to slide. The electric clamp 105 slides on the second conveying base 104 and clamps the material. Through multi-stage transmission, the material is accurately conveyed and positioned in different directions.

[0031] Next, the lifting drive motor 201 on the lifting transmission seat 2 starts, driving the second lead screw 202 to rotate. The lifting mounting plate 204, which is threadedly connected to the second lead screw 202, moves up and down in the lifting slide 203, thereby adjusting the height of the milling cutter drive seat 3 to meet different processing height requirements.

[0032] In terms of milling cutter drive, the third drive motor 301 at the top of the milling cutter drive seat 3 outputs power, and the drive pulley 303 connected to its output end drives the driven pulley 305 on the outer wall of the limit shaft 302 to rotate through the transmission belt 304, thereby causing the limit shaft 302 to rotate. The output end of the limit shaft 302 is connected to the input end of the drive shaft 411, and transmits power to the drive shaft 411.

[0033] In the quick-release milling cutter assembly 4, the drive shaft 411 rotates, causing the milling cutter head 403 to rotate within the limiting bushing 402, thereby achieving milling of the material. Due to the through slots opened in the middle of the top of the mounting base 401, quick-release part 409, rotating part 410, and connecting part 407, the drive shaft 411 rotates, causing only the milling cutter head 403 to rotate, while other parts do not move.

[0034] When the milling cutter head 403 needs to be replaced, rotate the quick-release piece 409 to disengage it from the limiting quick-release slot 405, and the milling cutter head 403 and related components can be removed for replacement. During installation, align the quick-release piece 409 with the limiting quick-release slot 405, insert it and rotate it. At the same time, the elastic telescopic rod 408 at the top of the rotating piece 410 engages with the fixing slot 406 at the bottom of the connecting piece 407, completing quick installation and fixing, realizing convenient replacement of the milling cutter head 403, improving processing efficiency and equipment practicality.

[0035] The above-described embodiments are merely examples of several implementations of this utility model. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A double-head numerical control milling machine comprising a milling tool driving seat (3), characterized in that: The output end of the milling cutter driving seat (3) is provided with a quick-release milling cutter assembly (4), the quick-release milling cutter assembly (4) comprises a mounting seat (401), the inner side wall of the mounting seat (401) is rotationally connected with a quick-release part (409) for realizing quick-release function, the bottom middle position of the quick-release part (409) is fixedly provided with a rotating part (410), the bottom middle position of the rotating part (410) is rotationally connected with a driving shaft (411) for driving a milling cutter head (403), and the bottom of the rotating part (410) is fixedly provided with a limiting shaft sleeve (402) which is rotationally arranged outside the milling cutter head (403).

2. The double cutter head NC milling machine according to claim 1, wherein: The top middle positions of the mounting seat (401), the quick-release part (409), the rotating part (410) and the connecting part (407) are provided with through grooves for driving the driving shaft (411), so that the milling cutter head (403) rotates under the action of the driving end of the corresponding milling cutter driving seat (3) and other parts do not rotate together.

3. The double-spindle numerically controlled milling machine according to claim 2, characterized in that: The bottom middle position of the connecting part (407) is provided with a limiting quick-release groove (405), the bottom middle positions of the connecting part (407) are provided with fixed grooves (406), the limiting quick-release groove (405) is matched with the quick-release part (409), the quick-release part (409) is rotationally connected with the inner side wall of the limiting fixed groove (404) and is quickly released or limited through the limiting quick-release groove (405), the top front side and the rear middle position of the rotating part (410) are provided with elastic telescopic rods (408), and the elastic telescopic rods (408) are respectively clamped with the corresponding fixed grooves (406).

4. The double cutter head NC milling machine according to claim 2, wherein: The top middle positions of the two milling cutter driving seats (3) are respectively penetrated and rotationally connected with limiting shafts (302), the bottom middle positions of the milling cutter driving seats (3) and below the corresponding limiting shafts (302) are respectively provided with limiting discs (306), the inner side wall middle positions of the limiting discs (306) are provided with limiting sleeves, the output ends of the limiting shafts (302) are penetrated and rotationally connected with the bottoms of the corresponding limiting sleeves, and the output ends of the limiting shafts (302) are respectively connected with the input ends of the corresponding driving shafts (411).

5. The double cutter head NC milling machine according to claim 1, wherein: The tops of the two mounting seats (401) are respectively fixedly provided with the bottom middle positions of the corresponding limiting sleeves.

6. The double-spindle numerically controlled milling machine according to claim 4, characterized in that: The top middle positions of the milling cutter driving seats (3) and the side positions of the corresponding limiting shafts (302) are provided with third driving motors (301), the output ends of the third driving motors (301) penetrate the bottoms of the milling cutter driving seats (3), the output ends of the third driving motors (301) are connected with driving pulleys (303), the outer side walls of the limiting shafts (302) and the two side positions of the driving pulleys (303) are respectively fixedly provided with driven pulleys (305), and the outer side walls of the two driving pulleys (303) and the driven pulleys (305) are respectively provided with transmission belts (304).

7. The double-spindle numerically controlled milling machine according to claim 6, characterized in that: The rear side wall of the two milling cutter driving seats (3) is provided with lifting installation plates (204), the lifting installation plates (204) are slidingly connected to the middle position of the front side wall of a lifting transmission seat (2), the middle position of the top of the lifting transmission seat (2) is provided with a lifting driving motor (201), the front side wall of the lifting transmission seat (2) is provided with a lifting sliding groove (203) near the upper end position, the inner side wall of the lifting sliding groove (203) is rotatably connected with a second lead screw (202), the output end of the lifting driving motor (201) is connected with the input end of the lifting sliding groove (203), and the sliding end of the lifting installation plate (204) is threadedly connected to the outer side wall of the second lead screw (202).

8. The double cutter head NC milling machine according to claim 1, wherein: The milling cutter driving seat (3) is installed on the top middle rear side position of a material conveying base (1).

9. The double-spindle numerically controlled milling machine according to claim 8, characterized in that: The material conveying base (1) comprises a first transmission seat (101), the top of the first transmission seat (101) is slidingly connected with a first conveying seat (102), the top middle position of the first conveying seat (102) is provided with a second transmission seat (103), the top middle position of the second transmission seat (103) is slidingly connected with a second conveying seat (104), and the top front side and the middle position of the rear side of the second conveying seat (104) are slidingly connected with electric clamps (105).

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