CN202763057U - High-efficiency numerical control turning center - Google Patents

Abstract

The utility model relates to a high-efficiency numerical control turning center comprising a turning-lathe base and a protective cover arranged on the outside of the turning-lathe base. Two main shaft platforms and two turret cutter towers are arranged on the base along a central line in a symmetrical mode. A main shaft driven by a motor is arranged on each main shaft platform and a chuck is arranged at the front end of the main shaft. A manipulator beam is arranged at the upper portion of each main shaft platform and provided with an automatic feeding and blanking mechanical arm. Storage bins and centralized lubricating systems are arranged at two ends of the lower side of the turning-lathe base. A cooling water tank is arranged between two centralized lubricating systems. A feeding mechanism arranged at the bottom of each storage bin is connected with a chip removal machine arranged on the outside of the turning center. Automation of part manufacturing process is achieved, a gantry type automatic blanking mechanism and a part turnover mechanism are adopted, two-side automatic clamping and processing of disc parts are achieved without manual clamping, automatic transportation of the parts are achieved in a long time by assorted parts storage bin, unmanned production process is achieved, production efficiency is high, labor intensity is low, and labor cost is greatly reduced.

Description

Efficient CNC turning machining center

technical field

The utility model relates to a high-efficiency numerical control turning machining center, which belongs to the technical field of numerical control processing equipment.

Background technique

The machining center machine tools used in large quantities in the prior art generally have only one main shaft in one machine tool, that is to say, at the same time, on one machine tool, only one main shaft and one knife can be working. Because the tool magazine of the existing machining center can only exchange different tools for one spindle. Another situation is that some special machines have two or three spindles, or even multiple spindles on the same machine tool, but in actual work, only one spindle tool is cutting. The rest of the spindles are either equipped with tools of different shapes, and after the first tool is finished, the work of the next process is carried out. Or it is just that several spindles are the same tool, and several same workpieces are processed. These two situations have one thing in common, neither can use the tool magazine for automatic tool change work, and there is no substantial improvement in work efficiency. Although the second situation can work on several workpieces synchronously, it cannot be changed. knife.

Chinese patent CN201120205806.6 discloses a five-axis double motorized spindle independent tool table precision CNC machine tool, including a bed and an electric control box, a right horizontal servo motor is installed on the bed, a left horizontal servo motor is installed on the electric control box, The control box is provided with an independent knife station, which is connected with the cross guide rail, the main shaft is arranged on the left lateral servo motor on the left side of the cross guide rail, and the sub-spindle is arranged on the right lateral servo motor on the right side of the cross guide rail. Although this structure can be processed, it cannot perform automatic tool change, the efficiency is relatively low, and the degree of automation is low.

Utility model content

The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and propose a high-efficiency CNC turning machining center, which is a special machine tool with high efficiency, compact structure, compound processing function and easy configuration of automatic production line.

In order to solve the above technical problems, the utility model provides a high-efficiency numerical control turning machining center, which includes a lathe base and a protective cover arranged outside the machine base, and a first headstock and a second spindle are symmetrically arranged on the base along the center line A first spindle and a second spindle driven by a motor are installed on the first spindle and the second spindle, and the front and rear ends of the first and second spindles are equipped with chucks and driven by a motor The pulley; the first turret turret and the second turret turret are installed symmetrically along the center line on the base, and the first turret turret and the second turret turret are respectively connected to the first main shaft and the second turret turret. The chucks on the two spindles are used together.

The thermal deformation of the bed with this structure is difficult to affect the relative deformation of the tool tip of the spindle and turret. For the spindle and turret, the proximity and compactness are very good, and the cutting fluid directly falls into the bottom of the machine. In the coolant tank, it is difficult for the heat of chips to be transferred to the bed. In addition, this structure has nothing to do with the loading and unloading method, and the setting has the best coordination. Two lathes with symmetrical structure of headstock and turret can be easily connected. At this time, the distance between the centers of the two spindles should be as small as possible.

The technical solution further defined by the utility model is: a feed bin and a centralized lubrication system are provided at both ends of the lower side of the aforementioned lathe base, a cooling water tank is provided between the two centralized lubrication systems, and the cooling water tank is provided on the operating side of the machining center. And the cooling water tank can be drawn out.

In the aforementioned high-efficiency CNC turning machining center, the front part of the spindle bearings of the first headstock and the second headstock uses combined angular contact ball bearings, and the rear part uses single-row cylindrical roller bearings. When the spindle heats up, the spindle will extend to the rear.

In the aforementioned high-efficiency CNC turning machining center, the index positioning of the first turret turret and the second turret turret adopts a three-piece clutch gear mechanism, and is clamped by an oil cylinder to achieve high repeatability indexing accuracy and meet heavy duty requirements. cutting.

In the aforementioned high-efficiency CNC turning machining center, a louver-type protective cover is installed on the outside of the automatic loading and unloading robot arm, and a chip removal machine for chip removal is installed on the outside of the protective cover.

Further, in the above-mentioned high-efficiency CNC turning machining center, an openable blocking partition is installed between the first headstock and the second headstock, in order to prevent the flying chips and cutting fluid from hindering the other side when processing on one side. Side processing and workpiece loading and unloading.

The beneficial effects of the utility model are: the utility model is suitable for processing large quantities of disc parts with complex structures. The main machine adopts a symmetrical layout structure with parallel double turrets and parallel double spindles, which organically combines the two machine tools. The minimum distance between the spindles is designed, and the whole machine is compact. The appearance of the machine tool is a fully enclosed sliding protective door structure, which is both beautiful and easy to operate. It can also effectively prevent chips from flying out and coolant from splashing with the help of a protective door. It is an environmentally friendly CNC lathe that can meet the requirements of users for green production; the turning center can realize the automation of parts processing. The machine tool has material Clamping and conveying automation functions, with gantry-type automatic unloading robot arm and parts turning mechanism, can carry out automatic clamping and processing on both sides of disk parts without manual clamping, and the configuration of parts silo can complete the parts for a long time Automatic conveying, unmanned production process, high production efficiency, low labor intensity, can greatly reduce labor costs.

Both the base and the carriage of the utility model are integrally cast with high-quality cast iron, and the unique left and right symmetrical double bed seat structure can minimize the mutual influence of the thermal deformation of the machine tool and the processing process, improve the machining accuracy of the machine tool, and ensure the stability of the parts for a long time. . The main drive of the lathe is directly driven by the servo spindle motor through the rubber belt to rotate the spindle, which not only makes the structure simple, but also avoids the noise pollution caused by the gear transmission.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a side sectional view of FIG. 1 .

Fig. 3 is a diagram of the internal structure of the utility model.

FIG. 4 is a top view of FIG. 3 .

Detailed ways

A high-efficiency CNC turning machining center provided in this embodiment has a structure as shown in Figures 1 to 4, including a lathe base 1 and a protective cover 2 arranged outside the machine base 1, and a first spindle is symmetrically arranged on the base 1 along the center line Table 3 and the second headstock 3-1, the first main shaft 6-1 and the second main shaft 6 driven by the motor 5 are installed on the first main shaft 3 and the second main shaft 3-1, the first main shaft 6- Chucks 7-1, 7 and motor-driven pulleys 15-1, 15 are installed at the front and rear ends of 1 and the second main shaft 6; the first turret turret 4-1 and the second turret turret 4-1 are symmetrically installed along the center line on the base. The turret turret 4, the first turret turret 4-1 and the second turret turret 4 are used in cooperation with the chucks on the first main shaft 6-1 and the second main shaft 6 respectively. The upper part of the first headstock 3 and the second headstock 3-1 is equipped with a manipulator beam 8, and a mechanical arm 9 for automatic loading and unloading is installed on the beam 8; a material bin 10 and a centralized lubrication system 11 are arranged at both ends of the lower side of the lathe base , A cooling water tank 12 is set between the two centralized lubrication systems, the cooling water tank 12 is located on the operation side of the machining center, and the cooling water tank can be drawn out. The front part of the spindle bearings of the first headstock 3 and the second headstock 3-1 adopts a combination angular contact ball bearing, and the rear part adopts a single row cylindrical roller bearing. The indexing positioning of the first turret turret 4-1 and the second turret turret 4 adopts a three-piece clutch gear mechanism, which is clamped by an oil cylinder, and a louver-type protective cover is installed on the outside of the automatic loading and unloading mechanical arm 9 , the outer side of the protective cover is installed with a chip removal machine 13 for chip removal. An openable blocking partition is installed between the first headstock 3 and the second headstock 3-1. When processing on one side, in order to prevent the flying chips and cutting fluid from hindering the processing on the other side and loading and unloading of workpieces.

In the structure of the main shaft bearing in this embodiment, a combined angular contact ball bearing is used in the front, and a single-row cylindrical roller bearing is used in the rear. When the main shaft heats up, the main shaft will extend to the rear; It adopts a large-diameter front bearing with an inner diameter of φ90mm, which has high deflection and bending rigidity. Both the dual-spindles of this machine tool have C-axis functions.

The turret of this embodiment adopts a compact mechanism that can easily handle turning tools and rotary tools, and the driving method of the indexing of the turret turret uses a servo motor with high reliability and smooth acceleration and deceleration. The indexing and positioning of the tool holder adopts a high-precision and high-rigidity three-piece clutch gear mechanism, and the powerful clamping of about 5000kg/35kg/cm2 is carried out by the oil cylinder, which achieves high repeatable indexing accuracy and can meet heavy cutting. For the rotary drive, in order to avoid the noise and heat of the bevel gear, the power transmission mechanism is only installed on the cutting surface of the turret, and the drive is driven by a servo motor and a transmission belt; in terms of reliability, the coolant supply of the turret is adopted from The supply method of the external nozzle; the rotary tool clamping method adopts BMT-55, which has a high penetration rate in the world.

The utility model achieves the purpose of light weight and thermal deformation reduction through the special flat bed structure design. Improve the fast forward speed of the tool post, shorten the acceleration and deceleration time of the spindle, and the compact design of the machine tool structure and material automation make it possible to have a reasonable running connection of the workpiece, ensure the production cycle of the machine tool, and realize the high speed and high efficiency of the machine tool. It can realize the three-axis linkage control of the C axis and the X and Z feed axes, and adopts a horizontal ten-station power turret, which can flexibly place various functional power heads. The CNC lathe is suitable for the following processing purposes: machining of medium and small rotary parts with complex geometric shapes and high precision requirements; turning of cylindrical surfaces, conical surfaces, arc surfaces, various rotary surfaces, and various metric and imperial thread surfaces Processing: Turning of the end face, grooving, chamfering, drilling, expansion, reaming, and boring of parts can realize rigid tapping; it can realize radial and axial drilling and milling processing and cam processing.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (8)

1. High-efficiency CNC turning machining center, including a lathe base (1) and a protective cover (2) arranged outside the machine base (1), characterized in that: the base (1) is symmetrically arranged with a first The headstock (3) and the second headstock (3-1), on which the first spindle driven by the motor (5) is installed ( 6-1) and the second main shaft (6), the front and rear ends of the first main shaft (6-1) and the second main shaft (6) are equipped with chucks (7-1, 7) and pulleys driven by motors (15-1, 15); the first turret turret (4-1) and the second turret turret (4) are installed symmetrically along the center line on the base, and the first turret turret (4- 1) and the second turret turret (4) are respectively used in cooperation with the chucks on the first main shaft (6-1) and the second main shaft (6). 2. The high-efficiency CNC turning machining center according to claim 1, characterized in that: the upper part of the first headstock (3) and the second headstock (3-1) is equipped with a manipulator beam (8), and the beam ( 8) Install the mechanical arm (9) for automatic loading and unloading. 3. The high-efficiency CNC turning machining center according to claim 1, characterized in that: both ends of the lower side of the lathe base are provided with a silo (10) and a centralized lubrication system (11), and the two centralized lubrication systems Cooling water tank (12) is arranged between. 4. The high-efficiency numerical control turning machining center according to claim 3, characterized in that: the cooling water tank (12) is arranged on the operation side of the machining center, and the cooling water tank can be drawn out. 5. The high-efficiency CNC turning machining center according to claim 1, characterized in that: the front parts of the spindle bearings of the first headstock (3) and the second headstock (3-1) adopt combined angular contact ball bearings, The rear uses a single row cylindrical roller bearing. 6. The high-efficiency CNC turning machining center according to claim 1, characterized in that: the indexing and positioning of the tool holders of the first turret turret (4-1) and the second turret turret (4) adopt a three-piece type The clutch gear mechanism is clamped by the oil cylinder. 7. The high-efficiency CNC turning machining center according to claim 1, characterized in that: a louver-type protective cover is installed on the outer side of the automatic loading and unloading robot arm (9), and a chip removal machine for chip removal is installed on the outer side of the protective cover (13). 8. The high-efficiency CNC turning machining center according to claim 1, characterized in that: an openable blocking partition is installed between the first headstock (3) and the second headstock (3-1).

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