CN2125477U - Transmission Mechanism of Opposite Double Spindle and Double Turret of CNC Lathe - Google Patents

Abstract

A CNC lathe transmission mechanism with opposite double spindles and double turrets. A spindle seat and a sub-spindle seat are respectively arranged at both ends of the guide rail of the bed platform. Chucks are provided on each spindle seat, and the sub-spindle seat can be in the Z-axis ( Longitudinal) displacement, there are tool holders and auxiliary tool holders on both sides of each spindle seat, and the tool holders can be shifted longitudinally and moved in and out horizontally. The utility model can simultaneously perform more than two continuous turning processes on two workpieces or the same workpiece without interruption, so as to improve production efficiency.

Description

The utility model relates to a turning processing machine, in particular to a CNC (computer numerical control numerical controller) lathe with double cutting and processing functions, a transmission mechanism with opposite double spindles and double tool holders.

Please refer to Fig. 1, the general traditional lathe or CNC lathe mainly includes the main shaft seat 2 installed on the bed platform 1, and the longitudinally slidable tailstock arranged at the opposite end of the main shaft seat 2 4, and the tool holder 5 set on one side of the center line of the parallel guide rail; generally, a chuck 3 is installed on the end of the main shaft for clamping and turning of the workpiece, and the tailstock 4 can be placed on the tail end of the workpiece to prevent The swing during workpiece turning improves the turning accuracy of the workpiece, and the tool post 5 can be used for vertical and horizontal feeds; therefore, it can be easily understood that the currently widely used lathes are all in the mode of single tool post and single spindle, so It is conceivable that when a workpiece is intended to be turned more than twice, no matter it is a traditional or CNC lathe, please cooperate as shown in Figures 2 and 3. When the workpiece 6 needs to be processed on both sides, one side must be processed first, and one side is processed. Then the workpiece 6 is clamped on the chuck 3 for turning processing. Therefore, in different turning operations, the workpiece 6 must be frequently replaced, which not only wastes time, but also needs to be corrected every time it is replaced. To prevent inaccurate turning accuracy, so the overall production efficiency cannot be improved, and it will also have a negative impact on the accuracy of the workpiece.

The main purpose of this utility model is to provide a CNC lathe transmission mechanism with double spindles and double turrets. A spindle seat is provided at one end of the bed of the lathe, a sub-spindle seat is provided on the guide shaft at the opposite end, and a sub-spindle seat is provided on both sides of the lathe Each side is equipped with a tool holder. Through the above-mentioned combined structure, two parts of a workpiece can be processed at the same time or secondary turning processing and two workpieces can be processed at the same time to improve production efficiency and processing accuracy of the workpiece.

The purpose of this utility model is achieved in the following manner:

A CNC lathe transmission mechanism with opposite double spindles and double turrets, the bed is provided with a guide rail, the center of the guide rail is provided with a longitudinal gap, the lower part of the guide rail is provided with a screw, the guide rail is fixed with a spindle seat, and the side of the spindle seat is arranged There is a group of tool holders, and a chuck is installed at the front end of the main shaft seat; a sub-spindle seat is provided on the bed rail at the opposite end of the main shaft seat, which is located on the same center line as the main shaft seat, and its end is also provided with a Chuck; the bottom of the sub-spindle base is fixed on the base, the bottom of the base is movably straddled on the guide rail, and screwed to the lead screw, the outer end of the lead screw is connected to control the auxiliary Servo motor for longitudinal displacement of main shaft seat;

On the side of the sub-spindle seat, a sub-tool rest relative to the tool rest is provided. The bases of the tool rest and the sub-tool rest are respectively straddled on the first guide rails parallel to the guide rails, and are respectively screwed to the pivots. The first and second lead screws are arranged at the lower part of the first guide rail, and the servo motors for controlling the longitudinal displacement of the knife rest and the sub-tool rest are respectively connected at the outer ends, and are located in the transverse center of the top surface of the base of the knife rest and the sub-tool rest. Track grooves are also arranged on the top, and the third and fourth lead screws screwed with the tool rest and the auxiliary tool rest are pivoted in the track grooves, and the ends of the third and fourth lead screws are respectively connected to control The tool rest and the auxiliary tool rest are used as servo motors for lateral displacement.

The purpose of the utility model can also be achieved in the following manner: the bed platform is provided with a numerical controller for controlling the feeding of the sub-spindle seat and the tool rest and the sub-tool rest.

The following is a detailed description of the CNC lathe of the present utility model to the dual-spindle and double-turret transmission mechanism through the best embodiment and accompanying drawings. In the accompanying drawings:

Figure 1 is a schematic diagram of the appearance of a conventional CNC lathe;

Figures 2 and 3 are schematic diagrams of turning processing of conventional single-spindle and single-turret;

Fig. 4 is a three-dimensional schematic view of a preferred embodiment of the present invention;

Fig. 5 is a schematic top view of a preferred embodiment of the utility model;

Fig. 6, 7 is the state diagram of the continuous turning process of the workpiece more than two times in the preferred embodiment of the present invention;

Fig. 8 is a schematic diagram of the simultaneous processing of two workpieces in a preferred embodiment of the present invention.

Please refer to Fig. 4, shown in 5, the transmission mechanism of the utility model numerically controlled lathe opposite double main shaft double turret, comprises components such as bed platform 10, main shaft seat 20, tool rest 30, sub-spindle seat 40, sub-tool rest 50.

The bed platform 10 has the same structure as the general previous bed platform, on which there is a guide rail 11 and the first guide rail 11' beside it; a notch 111 is provided in the center of the guide rail 11, and a lead screw with a longitudinal parallel notch 111 is pierced at the end 112, its front end is pivotally arranged on the thrust bearing seat 12, and the other end is connected on the servo motor 13, and the outer edge of the bed platform 10 is covered with a protective cover 14; the first guide rail 11' is arranged parallel to the above-mentioned guide rail 11, There is also a notch 111' longitudinally in the center, and a symmetrical first lead screw 112' and a second lead screw 113' are sheathed and screwed, and are pivoted symmetrically on the thrust bearing housings 15 and 16 respectively. And they are respectively connected to the first and second servo motors 17 and 18 .

The main shaft seat 20 is fixedly installed on the front end of the guide rail 11 of the bed 10, and a main shaft (not shown) is pivoted in it, and it is driven to run, and a chuck 21 is installed at its front end for clamping the workpiece; the main shaft seat 20 is the same as the previous structure.

The knife rest 30 is arranged on the base 31, and the two sides of the top surface of the base 31 are respectively provided with track grooves 311, for the projections 301 extending on both sides of the bottom end of the knife rest 30 to engage and slide, and the bottom of the knife rest 30 is screwed to the center of the base 31 On the third lead screw 302 pivotally arranged on the position, the third lead screw 302 is connected to the third servo motor 32 for the displacement of the tool holder 30 in the X-axis (horizontal direction), and the bottom of the base 31 is screwed to the first The first lead screw 112 ′ of the guide rail 111 ′ can be controlled by the first servo motor 17 to provide the Z-axis (longitudinal) displacement of the tool holder 30 .

The bottom of the sub-spindle seat 40 is fixed on the base 41, which is arranged opposite to the main shaft seat 20, and is located on the same center line. On the aforementioned wire frame 112, the sub-spindle seat 40 can be displaced longitudinally (that is, in the Z direction), and a chuck 42 is also arranged on it, which is opposite to the chuck 21 of the main shaft seat 20. .

The structure of the auxiliary tool rest 50 is exactly the same as that of the aforementioned tool rest 30. It is installed on the base 51, and is provided with a fourth lead screw 501 and a fourth servo motor 52 to provide the auxiliary tool rest 50 for X-axis displacement. The bottom of the tool holder 51 is screwed to the second lead screw 113 ′, and through the control of the second servo motor 18 , the sub-turret 50 is provided with a Z-axis (longitudinal) displacement. Structural features and advantages of the utility model are as follows:

Please refer to Figs. 6 and 7, the spindle seat 20 is the same as the general traditional CNC lathe, and is fixed and cannot be moved. If both sides of a workpiece 60 are to be turned, the one end side 601 is first clamped in the On the chuck 21 of the main shaft seat 20, then, according to the appearance shape and size to be processed, input it into the numerical controller (not shown), and then drive the tool post 30 to move along the X and Z axes according to the program to move the workpiece 60 The unclamped end side 602 is subjected to turning processing. After the end side 602 is processed (as shown in FIG. 6 ), and the original clamped end side 601 is to be processed, the sub-spindle seat 40 is driven according to the program. Advance and make its chuck 42 clamp the finished end side 602 of the workpiece 60, and then drive the auxiliary tool rest 50 to process the other end side 601 (as shown in Figure 7); therefore, the workpiece 60 can be avoided In the process of secondary turning, take out the inconvenience caused by changing the side and recalibrating the turning accuracy of the workpiece; secondly, as shown in Figure 8, the utility model can also process two workpieces at the same time. 20 and the sub-spindle seat 40 clamp an identical workpiece 60 at the same time, and the tool rest 30 and the sub-tool rest 50 are also set with the same feed path, and the workpiece 60 is subjected to the same turning process.

The utility model has the following advantages:

The main shaft of the utility model adopts the design of double heads facing each other, and its tool holders are located on the same side, and also adopts the design of facing each other, so when one end side of the workpiece is processed, when the other end side or other parts are to be processed, The clamping position can be directly replaced, and the set tool holder can be fed and processed. In this way, not only the time for changing the workpiece side can be saved during the whole turning process, but also the damage caused by the side changing clamping can be avoided. Calibrate the accuracy again; and the utility model can apply the same turning process to two workpieces at the same time, so two finished products can be processed at the same time on the same bed, and the production efficiency can be relatively improved.

To sum up, the utility model is mainly provided with two spindle seats and two tool holders on the bed, which can process two parts of a workpiece at the same time, or process two workpieces at the same time, so as to achieve high-efficiency production efficiency .

Claims (2)

1. A CNC lathe transmission mechanism with opposite double spindles and double turrets. A guide rail is provided on the bed, a longitudinal gap is provided in the center of the guide rail, a screw is provided at the lower part of the guide rail, and a spindle seat is fixed on the guide rail. There is a set of tool holders on the side, and a chuck is installed on the front end of the main shaft seat; the characteristic is that: the opposite end of the main shaft seat is provided with a sub-spindle seat on the bed guide rail, which is located on the same center line as the main shaft seat, and its end The head is also equipped with a chuck; the bottom of the sub-spindle seat is fixed on the base, and the bottom of the base is movably straddled on the guide rail, and is screwed to the screw, and the outer end of the screw is connected to the control The servo motor for the longitudinal displacement of the sub-spindle seat; On the side of the sub-spindle seat, a sub-tool rest relative to the tool rest is provided. The bases of the tool rest and the sub-tool rest are respectively straddled on the first guide rails parallel to the guide rails, and are respectively screwed to the pivots. The first and second lead screws are arranged at the lower part of the first guide rail, and the servo motors for controlling the longitudinal displacement of the knife rest and the sub-tool rest are respectively connected at the outer ends, and are located in the transverse center of the top surface of the base of the knife rest and the sub-tool rest. Track grooves are also arranged on the top, and the third and fourth lead screws screwed with the tool rest and the auxiliary tool rest are pivoted in the track grooves, and the ends of the third and fourth lead screws are respectively connected to control The tool rest and the auxiliary tool rest are used as servo motors for lateral displacement. 2. According to claim 1, a CNC lathe transmission mechanism with opposite dual-spindle and double-turrets is characterized in that: on the bed, there is a control sub-spindle seat and the feeding of the tool rests and sub-tool rests. numerical controller.

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