CN110449924A - A kind of numerically-controlled machine tool with Double-linkage workbench - Google Patents

Abstract

The invention discloses a numerically controlled machine tool with a double-linkage workbench, which comprises a machine tool body. The machine tool body includes an upper box body and a lower box body. The upper box body is fixedly connected to one end of the top surface of the lower box body; Table device, workbench device includes Y-direction moving device, X-direction moving device and workbench, X-direction moving device is connected to Y-direction moving device, Y-direction moving device works to drive X-direction moving device to move in Y-direction, workbench Connected to the X-direction moving device, the X-direction moving device works to drive the workbench to move in the X direction; the upper box is connected with a tool seat, which is used to install the tool, and the tool works to process the workpiece on the workbench; The X-direction moving device and the Y-direction moving device with the same structure are adopted, and the structure is simple. Through the moving devices in two directions, the worktable can move in two directions simultaneously or separately, and the feeding efficiency is improved.

Description

A CNC machine tool with double linkage workbench

technical field

The invention relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with double linkage worktables.

Background technique

In the field of mechanical processing, especially in the aspect of CNC machining, the workbench is a very important part. The feed speed and feed accuracy of the workbench will affect the processing quality of the CNC machine tool. The double-linkage workbench in the prior art uses a belt drive to drive the workbench to move. Although the belt drive has a long working stroke, the precision of the belt drive is low, and the belt will be deformed and loosened as the use time increases. The deformation will affect the moving speed and accuracy of the table, thus affecting the processing of the workpiece. How to provide a workbench with simple structure and good use effect is a problem we have been concerned about.

Contents of the invention

The object of the present invention is to provide a numerically controlled machine tool with double-linkage workbenches, so as to solve the problems of complicated workbench structure, low feed efficiency and low precision in the prior art.

In order to achieve the above object, the present invention is achieved by adopting the following technical solutions:

A numerically controlled machine tool with a double-linkage workbench, comprising a machine tool body, the machine tool body comprising an upper box and a lower box, the upper box is fixedly connected to one end of the top surface of the lower box; A workbench device is provided, and the workbench device includes a Y-direction moving device, an X-direction moving device and a workbench, the X-direction moving device is connected to the Y-direction moving device, and the Y-direction moving device drives all The X-direction moving device moves in the Y direction, the worktable is connected to the X-direction moving device, and the X-direction moving device works to drive the workbench to move in the X direction; the upper box is connected with The tool seat is used for installing a tool, and the tool works to process the workpiece on the workbench.

Further, the structure of the moving device in the Y direction is the same as that in the moving device in the X direction; the moving device in the X direction includes a servo motor, a transmission device, a screw and a base plate, and the screw mandrel is rotatably fixed on the base plate, The servo motor is connected to the bottom plate, the servo motor is connected to the screw mandrel through the transmission device, and the workbench is connected to the screw mandrel.

The advantages of the present invention are:

1. The present invention adopts the X-direction moving device and the Y-direction moving device with the same structure, and the structure is simple. Through the moving devices in two directions, the workbench can move in two directions simultaneously or separately, and the feeding efficiency is improved;

2. This device uses a screw rod as the device to control the movement of the worktable. The screw rod has the advantages of high precision of transmission displacement and long service life.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the numerical control machine tool of the specific embodiment of the present invention;

Fig. 2 is the schematic diagram of the mechanism of the workbench device in the numerical control machine tool of the specific embodiment of the present invention;

Fig. 3 is a specific structural schematic diagram of an X-direction moving device in a specific embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the bottom plate and connectors in the specific embodiment of the present invention.

Among them: 1. Upper box; 2. Lower box; 3. Workbench device; 4. Tool seat; 5. Control switch; 6. Circulating fluid tank; 7. Box door; 31. Y direction moving device; 32 , X-direction moving device; 33, workbench; 320, motor seat; 321, servo motor; 322, first bevel gear; 323, second bevel gear; 324, screw seat; 325, screw; 326, sliding seat ; 327, the first limit switch; 328, the second limit switch; 329, the bottom plate; 331, the first slider; 332, the second slider.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer" and the like indicate orientations or positions The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and does not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. The terms "front", "rear", "left", "right", "upper" and "lower" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" refer to is the direction towards or away from the geometric center of a particular part.

As shown in Figures 1 and 2, a CNC machine tool with a double linkage workbench includes a machine tool body, the machine tool body includes an upper box body 1 and a lower box body 2, and the upper box body 1 is fixedly connected to the top surface of the lower box body 2 One end; the lower box body 2 is provided with a workbench device 3, and the workbench device 3 includes a Y direction moving device 31, an X direction moving device 32 and a workbench 33, and the X direction moving device 32 is connected to the Y direction moving device 31, and the Y direction moving device 32 is connected to the Y direction moving device 31. The direction moving device 31 works to drive the X direction moving device 32 to move in the Y direction, the worktable 33 is connected to the X direction moving device 32, and the X direction moving device 32 works to drive the workbench 33 to move in the X direction; A tool seat 4 is connected, and the tool seat 4 is used for installing a tool, and the tool works to process the workpiece on the workbench 33 .

The upper box body 1 and the lower box body 2 can be integrally formed, or can be detachably connected. The lower box body 2 is mainly used to place the workbench device 3. The specific structure of the lower box body 2 is a hollow structure with an open top. The workbench device 3 is installed in the hollow part. The workbench device 3 adopts the X-direction moving device with the same structure. 32 and the Y-direction moving device 31 have a simple structure. Through the moving devices in two directions, the workbench can be moved in two directions simultaneously or separately, and the feeding efficiency is improved. The workbench 33 installed on the X-direction moving device 32 is located in the upper box body 1 . Tool seat 4 is installed in the upper box body 1, and when in use, fixture positioning is installed on the workbench 33, workpiece is fixed in the fixture, starts this device, and the cutting tool in the tool seat 4 processes workpiece.

The processing of the device is further described below. As shown in Figure 1-2, the tool seat 4 in this device adopts the tool seat in a conventional CNC machine tool, which can perform feed motion in the Z direction and rotation around the Z axis, that is, the cutting tool in this device can perform cutting. And the processing of forms such as turning holes and the related deep processing of these two processing extensions. The two situations of drilling and cutting are briefly described below. When the workpiece is cut, such as finishing one side of a rectangular workpiece, the workpiece is first fixed in the fixture of the workbench 33, and the coordinate system of the workbench 33 and the tool holder 4 is unified; then the size of the required workpiece is passed The operation panel is input into the machine tool, and the machine tool controls the tool seat to move to the corresponding position for processing. The processing precision can be selected during processing. If the precision is selected as 2mm, the required cutting allowance is 5mm, and the tool feed is divided into 2mm, 2mm and 1mm. Three passes complete the finishing operation. When carrying out turning hole to workpiece, then also need earlier " tool setting ", promptly unified coordinate system, the cutting tool selection when turning hole and cutting process is different, what installs in the tool holder 4 at this moment is turning hole cutter. After unifying the coordinate system, input relevant drilling data into the control system of the device, and the control system controls the tool seat 4 to rotate downward to complete the drilling work.

During drilling and cutting work, the X-direction movement and the Y-direction movement of the workpiece are completed by the workbench device 3 in this device. The control device is built in this device. The control device can be a computer, and the control device controls the tool holder 4 and the working table. The station device 3 works.

In the present embodiment, as shown in Fig. 2 and Fig. 3, the structure of the Y direction moving device 31 and the X direction moving device 32 is the same; Rod 325 is rotatably fixed on base plate 329 , servo motor 321 is connected on base plate 329 , servo motor 321 is connected with screw mandrel 325 through transmission device, workbench 33 is connected with screw mandrel 325 . The same structure ensures the convenience and simplicity of the production and installation process.

Specifically, the base plate 329 is a rectangular metal plate, and the left and right sides of the center line of the base plate 329 are respectively fixed with screw bases 324, and the screw bases 324 at both ends are provided with bearings, and the screw rods 325 are connected between the screw bases 324 at both ends. Ensure that the screw mandrel 325 can rotate between the screw mandrel seats 324. A motor base 320 is connected to the bottom plate 329 , and the servo motor 321 is fixed on the motor base 320 . It is convenient for the installation of the servo motor 321 . The power transmission device of the device adopts the screw mandrel 325, because the screw mandrel 325 has very high precision during transmission, and the service life of the screw mandrel 325 is long. The workbench 33 is installed on the screw mandrel 325, and the screw mandrel 325 will not be deformed due to the large force of the workbench 33, which further ensures the transmission accuracy of the device.

In this embodiment, as shown in Figure 3, the transmission device includes a first bevel gear 322 and a second bevel gear 323, the first bevel gear 322 is connected to the output shaft of the servo motor, and the second bevel gear 323 is connected to the screw rod 325, the first bevel gear 322 and the second bevel gear 323 mesh. Specifically, the center of the second bevel gear 323 is fixed on the right end of the screw rod 325, and the output shaft of the servo motor 321 is connected with the first bevel gear 322 through a coupling. When in use, the rotation of the servo motor 321 drives the first bevel gear 322 to rotate, and the first bevel gear 322 drives the second bevel gear 323 to rotate. Bevel gear transmission not only has the advantages of high precision, but also has the advantages of high load bearing capacity and long service life. Because the screw mandrel 325 is connected with the workbench 33, the workbench 33 will give a larger power to the screw mandrel 325. In order to ensure the safe and effective operation of the workbench 33, the transmission device selects a first-stage bevel gear transmission.

In this embodiment, as shown in Fig. 3 and Fig. 4, a first slider 331 is connected to the bottom surface of the workbench 33, and the first slider 331 is screwed on the screw rod 325, and the rotation of the screw rod 325 drives the first slider Block 331 moves. Specifically, the connection between the first slider 331 and the bottom surface of the worktable 33 can be integrally formed or bolted. The material of the first slider 331 is high strength alloy steel. Due to the frictional contact between the first slider 331 and the screw rod 325, its strength should be guaranteed to meet the requirement.

In this embodiment, the left and right ends of the screw rod 325 are provided with limit switches, the limit switches are used to control the servo motor 321 to stop working, the first slider 331 is in contact with the limit switch, and the limit switch releases a signal to the servo motor . Specifically, as shown in Figure 3, the limit switches at the left and right ends of the screw rod 325 are respectively recorded as the first limit switch 327 and the second limit switch 328, and the limit switches at both ends mainly play the role of limit position, that is, control The furthest stroke of the workbench 33 ensures that the workbench 33 moves between the limit switches at both ends. The working principle is that when the first slider 331 slides to the left end and contacts the first limit switch 327, it will trigger the first limit switch 327 to release the signal, the first limit switch 327 transmits the signal to the control device, and the control device transmits the signal To the servo motor 321 to make the servo motor 321 stop working. The setting of the limit switches at both ends is to ensure the safety of the device and prevent the device from being damaged due to excessive movement of the workbench 33 .

In this embodiment, as shown in FIGS. 3 and 4 , a slide 326 is also connected to the bottom plate 329 , and a second slide 332 is arranged on the bottom surface of the workbench 33 , and the second slide 332 is slidably connected to the slide 326 Inside. The shape of the sliding seat 326 is I-shaped or inverted triangle. Specifically, the bottom plate 329 is symmetrically provided with sliding seats 326 , the two sliding seats 326 are respectively two sides of the screw rod 325 , and the sliding seats 326 and the screw rod 325 are parallel to each other. The setting of the sliding seat 326 is to keep the workbench 33 stable when moving on the one hand, and to reduce the force on the screw rod 325 on the other hand. The inside of the workbench 33 is transmitted to the sliding seat 326 through the second slider 332, which reduces the stress on the screw mandrel 325, or makes the screw mandrel 325 unstressed, and the screw mandrel 325 only plays the role of transmitting displacement motion. Increased the service life of the device. Further, in order to prevent the second sliding block 332 from detaching from the sliding seat 326, the shape of the sliding seat 326 is set as an inverted triangle, I-shape or dovetail groove shape.

In this embodiment, as shown in FIG. 1 , a box door 7 is also provided on the upper box body 1 . The box body door 7 is an aluminum alloy door to ensure the strength of the box body door 7, and tempered glass is installed on the box body door 7, so that the staff can observe the processing situation of the workpiece inside the CNC machine tool. The lower box body 2 is also provided with a control switch 5, which has an input function and can input corresponding cutting data and position coordinate information, and the control switch 5 can control the servo motor 321 to work.

The outer side of the lower box body 2 is also connected with a circulating fluid tank 6, and the circulating fluid tank 6 is used for containing cooling fluid. The device also includes a coolant system. The nozzles in the coolant system are installed on the tool seat 4. The coolant sprayed by the coolant nozzle is used to cool the cutting tool. The sprayed coolant enters the lower box 2, and the lower box 2 is provided with a filter screen filter device to further filter the cooling liquid, and the filtered cooling liquid enters the circulating liquid tank 6 for subsequent use.

In the description of the present invention, it should be understood that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the above-mentioned components. Therefore, it should not be construed as limiting the protection scope of the present invention.

It can be known from common technical knowledge that the present invention can be realized through other embodiments without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are embraced by the present invention.

Claims (8)

1. a kind of numerically-controlled machine tool with Double-linkage workbench characterized by comprising

Machine body, including upper box (1) and lower box (2), the upper box (1) are fixedly connected on the lower box (2) top The one end in face；

Table device (3) are equipped in the lower box (2), the table device (3) includes Y-direction mobile device (31), X Direction mobile device (32) and workbench (33), the X-direction mobile device (32) are connected to the Y-direction mobile device (31) On, Y-direction mobile device (31) the work drive X-direction mobile device (32) does the movement of Y-direction, the workbench (33) it is connected on the X-direction mobile device (32), X-direction mobile device (32) work drives the workbench (33) Do the movement of X-direction；

It is connected with the base of tool (4) in the upper box (1), for installing cutter, toolsmith's base of tool (4) opposes the work The workpiece made on platform (33) is processed.

2. the numerically-controlled machine tool according to claim 1 with Double-linkage workbench, which is characterized in that the Y-direction is mobile Device (31) is identical with the structure of the X-direction mobile device (32)；

The X-direction mobile device includes servo motor (321), transmission device, screw rod (325) and bottom plate (329), the screw rod (325) rotation is fixed on the bottom plate (329), and the servo motor (321) is connected on the bottom plate (329), described to watch It takes motor (321) to be connected by the transmission device with the screw rod (325), the workbench (33) and the screw rod (325) it is connected.

3. the numerically-controlled machine tool according to claim 2 with Double-linkage workbench, which is characterized in that the transmission device packet Include first bevel gear (322) and second bevel gear (323), the output shaft of first bevel gear (322) and the servo motor It is connected, the second bevel gear (323) is connected on the screw rod (325), the first bevel gear (322) and described second Bevel gear (323) is meshed.

4. the numerically-controlled machine tool according to claim 2 with Double-linkage workbench, which is characterized in that the workbench (33) Bottom surface on be connected with the first sliding block (331), first sliding block (331) is threaded on the screw rod (325), the silk Bar (325) rotation drives first sliding block (331) mobile.

5. the numerically-controlled machine tool according to claim 4 with Double-linkage workbench, which is characterized in that the screw rod (325) Left and right ends be all provided with limit switches, the limit switch stops working for controlling the servo motor (321), described the One sliding block (331) and limit switch contact, the limit switch release signal to the servo motor.

6. the numerically-controlled machine tool according to claim 2 with Double-linkage workbench, which is characterized in that the bottom plate (329) On be also connected with slide (326), the bottom surface of the workbench (33) is equipped with the second sliding block (332), second sliding block (332) It is slidably connected in the slide (326).

7. the numerically-controlled machine tool according to claim 6 with Double-linkage workbench, which is characterized in that the slide (326) Shape be I-shaped or up-side down triangle.

8. the numerically-controlled machine tool according to claim 1 with Double-linkage workbench, which is characterized in that the upper box (1) On be additionally provided with cabinet door (7).