CN205218511U - Combined type is bored and is milled center - Google Patents

Abstract

The utility model relates to a compound drilling and milling center, which comprises a machine bed and a column arranged on one side of the machine bed. The machine bed is provided with an XY-axis workbench, and also includes a first spindle mechanism and a second spindle mechanism. , a spindle frequency converter and a numerical control processor, the first spindle mechanism is arranged on the column, the second spindle mechanism is arranged on the first spindle mechanism, and the spindle frequency converter is respectively connected to the first spindle mechanism and the second spindle mechanism , the numerical control processor is connected with the spindle frequency converter. Compared with the prior art, the utility model designs a processing technology that can integrate the existing equipment, realizes composite processing, reduces the flow between multiple processes and various equipment, and has the advantages of high efficiency, reduced defects and errors, etc., which is beneficial to enterprises The production efficiency has been greatly improved, and the processing accuracy of the manufacturing industry has been greatly improved.

Description

A compound drilling and milling center

technical field

The utility model relates to a numerical control machine tool, in particular to a compound drilling and milling center.

Background technique

At present, the driving mode of most CNC machine tools, especially the X/Y/Z three-axis of the drilling and tapping center, is mostly driven by a motor with a screw drive, and the spindle speed is generally low (below 20,000 rpm). Limited to the screw drive of most existing CNC machine tools, the disadvantages caused by the defects of the screw cannot be avoided during use, such as jitter, backlash error, temperature rise, slow acceleration, and high-speed linear motion cannot be avoided. However, the spindle with a lower number of revolutions cannot complete some special processes and achieve special processing effects. In addition, in the existing market, there are already devices that use linear motors to drive the movement of each axis or are equipped with high-speed spindles (over 30,000 rpm), but such devices are extremely expensive and have poor versatility, and cannot be widely used in the industry.

Due to the current environment of the processing and manufacturing industry, traditional CNC equipment, especially the drilling and tapping center, can only perform some ordinary processing, and cannot handle special requirements such as high-gloss, high-smoothness, and high-precision processing, while simple linear motors Although the equipment or high-speed electric spindle can guarantee the corresponding accuracy and meet some special processing requirements, it has poor versatility. The machining rigidity of high-speed electric spindle is not as good as that of ordinary mechanical spindle. It is not suitable for processing with large cutting volume, and the market demand is not large. and other shortcomings.

Utility model content

The purpose of this utility model is to provide a compound drilling and milling center with high efficiency, simple structure, convenient use, and compound processing in order to overcome the above-mentioned defects in the prior art, which can integrate existing equipment (drilling and tapping centers, Engraving and milling machine, etc.), complete compound processing, reduce the flow between multiple processes and various equipment, have the advantages of high efficiency, reduce defects and errors, and greatly improve the production efficiency of enterprises. The precision has been greatly improved, which is the innovation of processing and manufacturing equipment.

The purpose of this utility model can be achieved through the following technical solutions:

A compound drilling and milling center, comprising a machine bed and a column arranged on one side of the machine bed, the machine bed is provided with an XY-axis workbench, and also includes a first spindle mechanism, a second spindle mechanism, and a spindle inverter and a numerical control processor, the first spindle mechanism is arranged on the column, the second spindle mechanism is arranged on the first spindle mechanism, the spindle frequency converter is respectively connected to the first spindle mechanism and the second spindle mechanism, and the numerical control The processor is connected to the spindle inverter.

The first spindle mechanism includes a spindle housing, a Z-axis sliding assembly, and a first spindle for installing tools. The sliding component is slidingly connected with the column.

The Z-axis sliding assembly includes a sliding block, a sliding track, a linear motor and a grating ruler. Track sliding connection.

The Z-axis slide assembly also includes a servo drive respectively connected to the linear motor and the grating ruler.

The first spindle is a mechanical spindle.

The second spindle mechanism includes a spindle mounting seat and a second spindle for installing a tool, the spindle mounting seat is arranged on the spindle housing, and the second spindle is arranged in the spindle mounting seat.

The shaft diameter of the second main shaft is smaller than that of the first main shaft.

The second spindle is an electric spindle or an air-floating spindle.

It also includes a first tool magazine for providing tools to the first spindle mechanism, and the first tool magazine is arranged on the column.

It also includes a second tool magazine for providing tools to the second spindle mechanism, and the second tool magazine is arranged on the XY axis table.

Compared with the prior art, the utility model has the following advantages:

1) Machining accuracy is improved. The utility model designs two main shafts, one main shaft is the first main shaft in the same assembly position as the ordinary drilling and tapping main shaft, and one is set on the right side of the main shaft box and is the second main shaft. The first main shaft chooses the one with a larger shaft diameter. Mechanical spindle to obtain good processing rigidity and torque, the second spindle chooses electric spindle or air-floating spindle with higher speed to obtain higher speed and lower vibration rate, and the two are used together to complete rough machining , Composite machining of finishing and high-precision machining can not only meet the needs of ordinary CNC machining, but also complete high-speed and high-precision machining such as high-gloss machining and high-smooth machining on the same equipment.

2) Efficiency improvement. Combining the advantages of the linear motor and the high-speed spindle, it can give full play to the high efficiency that cannot be achieved by ordinary numerical control equipment. The design of two spindles can complete various processing processes on the utility model, avoiding the need for different processes due to the conversion of different equipment time wasted.

3) Quality improvement. Ordinary drilling and tapping centers are driven by screw rods, the spindle speed is low, and the feedback signal is passed through the encoder, resulting in the accuracy being greatly affected by the screw rod, machinery, errors and other reasons, so that it cannot meet some special processing requirements, such as high gloss, high smoothness, etc. . However, the X/Y/Z three-axis of the utility model is not limited to the drive of the motor screw or linear motor. It is driven by the linear motor, and the grating ruler feedbacks the positioning to minimize the backlash and other errors, so as to cooperate with the high-speed electric spindle of the second spindle. Complete the processing technology required by high gloss and high smoothness. Combining linear motor drive, grating scale feedback positioning, high-rigidity first spindle and high-speed second spindle, it perfectly solves the processing difficulties faced in various high-precision machining.

4) The structure is simple and easy to use. The utility model has various designs (not limited to integral type), relatively easy to obtain higher assembly precision, and convenient maintenance. Each of the two spindles uses a spindle inverter, which cuts off the interference of the two spindles when completing various CNC system instructions.

5) Automatic production. In the utility model, the numerical control system uniformly sends commands to the first spindle and the second spindle inverter to complete the respective actions of the two spindles, which fully reduces various problems and risks caused by arranging different machines to complete different processing techniques. It solves the increasing precision requirements and efficiency problems of the processing and manufacturing industry, and can achieve "one machine in place".

6) It is widely used. The utility model has incomparable pertinence to the process procedures of 3C and aviation products in the current manufacturing industry. Using the utility model, the products can be rough-cut, medium-rough, semi-finish, and finish without changing the process procedures. Processing, high gloss, high smooth and a complete set of processing technology. It can greatly improve the yield rate of product manufacturing, improve efficiency and reduce costs.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model;

Fig. 2 is the structural representation of first main shaft mechanism and second main shaft mechanism;

Fig. 3 is a structural schematic diagram of the first tool magazine;

Fig. 4 is a schematic structural diagram of the second tool magazine.

In the figure: 1. Machine bed, 2. Column, 3. XY-axis table, 4. Spindle inverter, 5. Numerical control processor, 6. Spindle box, 7. First spindle, 8. Spindle mounting seat, 9. Second spindle, 10. First tool magazine, 11. Second tool magazine, 12. Communication cable.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the utility model, and the detailed implementation and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

As shown in Figure 1 and Figure 2, a compound drilling and milling center with two spindles, two independent tool magazines, driven by a linear motor, and positioned by grating ruler feedback, includes a machine bed 1, a column 2, a first The spindle mechanism, the second spindle mechanism, the spindle frequency converter 4, the numerical control processor 5, the first tool magazine 10 and the second tool magazine 11, the column 2 is arranged on one side of the machine bed 1, and the machine bed 1 is provided with XY axes Workbench 3, the first spindle mechanism is arranged on the column 2, the second spindle mechanism is arranged on the first spindle mechanism, the second spindle mechanism is arranged vertically side by side with the first spindle mechanism, and the spindle frequency converter 4 is respectively connected through the communication cable 12 Connect the first spindle mechanism and the second spindle mechanism, the CNC processor 5 is connected to the spindle frequency converter 4 through the communication cable 12, the first tool magazine 10 is arranged on the column 2, and provides tools to the first spindle mechanism, and the second tool magazine 11 is arranged on the XY axis table 3, and provides the second tool magazine 11 of the tool to the second spindle mechanism.

Wherein, the first spindle mechanism includes a spindle housing 6, a Z-axis sliding assembly and a first spindle 7 for installing a tool, the spindle housing 6 is arranged on the column 2, the first spindle 7 is arranged in the spindle housing 6, and It is slidingly connected with the column 2 through the Z-axis sliding assembly.

The X/Y-axis and Z-axis sliding components of the XY-axis table 3 are recommended to be driven by linear motors, but the traditional method of driving by a motor screw is not ruled out, and it is selected according to actual needs.

The Z-axis sliding assembly includes a sliding block, a sliding track, a linear motor, a grating ruler, and a servo drive. The sliding block is arranged on the first spindle 7, and the sliding track, the linear motor, and the grating ruler are respectively arranged on the column 2. The sliding block and the sliding track The sliding connection and the servo drive are respectively connected to the linear motor and the grating ruler. The Z-axis sliding assembly moves up and down, driving the first spindle 7 or the second spindle 9 to move up and down, so as to cooperate with the left-right and back-and-forth movements of the X/Y axis for processing.

Driven by a linear motor, the grating ruler feedbacks positioning to minimize backlash and other errors, so as to cooperate with the high-speed electric spindle of the second spindle to complete the processing technology with high gloss and high smoothness requirements.

The second spindle mechanism includes a spindle mounting seat 8 and a second spindle 9 for installing tools. The spindle mounting seat 8 is arranged on the spindle housing 6 , and the second spindle 9 is arranged in the spindle mounting seat 8 .

The shaft diameter of the second main shaft 9 is smaller than the shaft diameter of the first main shaft 7 . The first spindle 7 is a mechanical spindle with a large shaft diameter, good rigidity, and large torque. The first tool magazine 10 corresponding to tool switching is a jig-arm tool magazine, as shown in FIG. 3 . The second spindle 9 is an electric spindle or an air-floating spindle, with high speed, light weight, and small vibration. The second tool magazine 11 corresponding to tool switching selects a row-type tool holder. There are corresponding number of tool positions on the row-type tool holder, such as Figure 4 shows. The two tool switching methods are standard tool changing methods on the existing market.

The structural design between the main shaft mounting seat 8 and the main shaft housing 6 is not limited to the integral type, but also can be designed as a split type, fixed by fastening, and pads, pins and other means can be set between the two installation contact surfaces to Guaranteed installation accuracy.

The assembly position of the first spindle 7 is the same as that of the ordinary drilling center. The increased second spindle 9 moves on the Z axis along with the first spindle 7 by the Z-axis sliding assembly. The direction and mode of movement of the first spindle 7 and the second spindle 9 unanimous. The numerical control system uniformly sends commands to the spindle inverters 4 of the first spindle 7 and the second spindle 9 to complete the individual actions of the two spindles. According to different processing requirements, the spindle can be selected selectively, and the processing is more targeted and more targeted. Ordinary equipment has only one, and there is no choice. The spindle can meet the needs of ordinary CNC machining, and the second spindle follows the Z-axis movement to complete high-speed and high-precision machining such as high-gloss machining and high-smooth machining. The two are used in conjunction to complete composite machining of rough machining, finishing machining and high-finish machining .

The utility model has a wide range of applications, and all products including rough and fine machining and high-finish machining in the current industry can overcome the difficulties of the prior art through the utility model. The utility model will innovate the processing technology of the existing processing technology. Compared with the existing high-precision processing technology (directly affected by the numerical control equipment) on the market, the utility model has the following advantages:

1) The use cost is relatively low. All high-precision machining processes can be completed on one device of the utility model, and it is not necessary to divide it into two or more devices for cooperative processing due to the reason of the numerical control device, thereby reducing the cost of equipment procurement.

2) Efficiency improvement. Each process can be processed on one piece of equipment of the utility model, which avoids time waste caused by switching different equipment for different process procedures.

3) Quality improvement. Each process can be processed on one piece of equipment of the utility model, which avoids accumulative clamping errors and repeated positioning errors during the conversion of each equipment process. The processing quality is higher.

4) The product is more adaptable. On the basis of the original clamp arm type tool magazine, the utility model is also equipped with a row tool rack type tool magazine for the second spindle, which expands the number of usable knives, has stronger adaptability to product processing, and avoids many times due to common The number of tool magazines in the drilling and tapping center is not enough, and the time and cost of passively increasing the process are wasted.

Claims (10)

1. A compound drilling and milling center, comprising a machine bed (1) and a column (2) located on one side of the machine bed (1), said machine bed (1) is provided with an XY axis workbench ( 3), it is characterized in that it also includes a first spindle mechanism, a second spindle mechanism, a spindle frequency converter (4) and a numerical control processor (5), the first spindle mechanism is arranged on the column (2), and the second spindle mechanism The two spindle mechanisms are arranged on the first spindle mechanism, the spindle frequency converter (4) is respectively connected to the first spindle mechanism and the second spindle mechanism, and the numerical control processor (5) is connected to the spindle frequency converter (4). 2. A compound drilling and milling center according to claim 1, characterized in that the first spindle mechanism comprises a spindle housing (6), a Z-axis slide assembly and a first spindle (7) for installing a tool ), the spindle housing (6) is arranged on the column (2), and the first spindle (7) is located in the spindle housing (6), and is slidably connected to the column (2) through a Z-axis sliding assembly. 3. A kind of compound drilling and milling center according to claim 2, characterized in that, the Z-axis sliding assembly comprises a sliding block, a sliding track, a linear motor and a grating ruler, and the sliding block is arranged on the first main shaft ( 7), the sliding track, the linear motor and the grating ruler are respectively arranged on the column (2), and the sliding block is slidingly connected with the sliding track. 4 . The compound drilling and milling center according to claim 3 , wherein the Z-axis sliding assembly further includes a servo drive connected to the linear motor and the grating ruler respectively. 5. A compound drilling and milling center according to claim 2, characterized in that the first spindle (7) is a mechanical spindle. 6. A compound drilling and milling center according to claim 2, characterized in that, the second spindle mechanism comprises a spindle mount (8) and a second spindle (9) for installing a tool, the spindle The mounting seat (8) is arranged on the spindle housing (6), and the second spindle (9) is arranged in the spindle mounting seat (8). 7. A compound drilling and milling center according to claim 6, characterized in that, the shaft diameter of the second main shaft (9) is smaller than the shaft diameter of the first main shaft (7). 8. A compound drilling and milling center according to claim 6, characterized in that the second spindle (9) is an electric spindle or an air-floating spindle. 9. A compound drilling and milling center according to claim 1, characterized in that it also includes a first tool magazine (10) that provides tools to the first spindle mechanism, and the first tool magazine (10) is located at on the column (2). 10. A compound drilling and milling center according to claim 1, characterized in that it also includes a second tool magazine (11) that provides tools to the second spindle mechanism, and the second tool magazine (11) is located at On the XY axis table (3).