Bar machining mechanism

Abstract

The utility model discloses a bar machining mechanism, and relates to the technical field of machining lathes. The problems that a tool apron and a lead screw shaft transmission mechanism of an existing device are located at the horizontal position, a tool needs to be frequently replaced according to different machining requirements on the tool apron, and when the tool apron is located at the horizontal position, a worker needs to bend over for operation, and inconvenience is caused are solved. The inclined pedestal is arranged above the lathe base, the inclined pedestal and the lathe base are integrally formed, a lead screw base is installed on the outer wall of the inclined pedestal, a ball screw shaft is installed in the lead screw base, a servo motor is installed at one end of the lead screw base, and a ball screw is installed in the ball screw shaft. The output end of the servo motor penetrates through and extends into the lead screw base and is in transmission connection with the ball screw shaft. And the sliding table is installed in the lead screw seat and is in transmission connection with the ball screw shaft, a connecting seat is installed above the sliding table, and a rotary table transmission seat is installed above the connecting seat.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tool rest positioning, in particular to a bar processing mechanism. Background Technique

[0002] CNC lathes are one of the most widely used CNC machine tools at present. It is mainly used for the cutting processing of the inner and outer cylindrical surfaces of shaft parts or disc parts, the inner and outer conical surfaces with any cone angle, the complex rotating inner and outer curved surfaces, and cylindrical and conical threads, etc., and can perform grooving, drilling, reaming, boring and other operations. On a CNC lathe, a lead screw shaft positioning mechanism is usually used to adjust the position of the tool rest to meet different processing requirements;

[0003] The closest prior art retrieved includes a lead screw shaft transmission mechanism mentioned in a CNC lathe for processing stainless steel parts with the publication number CN211072614U. The device includes a base, and an anti-slip mechanism is provided at the lower end of the base. The anti-slip mechanism includes a handwheel, an adjusting lead screw, a lead screw nut, an adjusting rod, a sliding plate and a support foot. The adjusting lead screw is rotatably connected to the base through a bearing. The handwheel is installed on one side of the base, and the handwheel is fixedly connected to one end of the adjusting lead screw. The lead screw nut is sleeved on the adjusting lead screw. The sliding plate is slidably installed inside the lower end of the base. The sliding plate is connected to the lead screw nut through the adjusting rod. Both ends of the adjusting rod are rotatably connected to the lead screw nut and the sliding plate through a rotating shaft.

[0004] However, the tool holder and the lead screw shaft transmission mechanism of the above device are in a horizontal position. Since the tool holder needs to frequently change tools according to different processing requirements, and when changing tools in the horizontal position, the operator needs to bend down, which is rather inconvenient. Therefore, we propose a bar processing mechanism to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of the utility model is to provide a bar processing mechanism to solve the problem that the tool holder and the lead screw shaft transmission mechanism of the existing device are in a horizontal position. Since the tool holder needs to frequently change tools according to different processing requirements, and when changing tools in the horizontal position, the operator needs to bend down, which is rather inconvenient as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions.

[0007] A bar processing mechanism includes a lathe base. A support base is installed at the lower end of the lathe base. Above one end of the lathe base, a workpiece positioning table is installed. At the front end of the workpiece positioning table, a three-jaw chuck for fixing the bar is installed. On the lathe base, there is an inclined pedestal. On the upper end surface of the inclined pedestal, a lead screw seat is provided. Inside the lead screw seat, a ball screw shaft is installed. At one end of the lead screw seat, a servo motor is installed. The output end of the servo motor penetrates and extends into the inside of the lead screw seat and is in transmission connection with the ball screw shaft. Based on the ball screw shaft, there is a slide table. Above the slide table, a connecting seat is installed. Above the connecting seat, a turntable drive seat is installed. Above the turntable drive seat, a tool rest turntable is installed. Around the inside of the tool rest turntable, installation chutes are provided for installing the tools for bar processing.

[0008] Preferably, between the slide table and the connecting seat is set to be telescopic. On both sides inside the slide table, hydraulic cylinders are installed. The output ends of the hydraulic cylinders penetrate and extend outside the connecting seat and are in transmission connection with the turntable drive seat.

[0009] Preferably, a driven bevel gear is installed at the bottom of the tool rest turntable and extends into the inside of the turntable drive seat. On the outer wall of the turntable drive seat, a stepping motor is installed. The output end of the stepping motor penetrates and extends into the inside of the turntable drive seat and is equipped with a driving bevel gear. The output end of the stepping motor is in meshing transmission connection with the driven bevel gear at the bottom of the tool rest turntable through the driving bevel gear, thereby realizing the switching of the tools on the tool rest turntable.

[0010] Preferably, guide bars are provided on both sides of the inner wall of the installation chute.

[0011] Preferably, locking holes are provided inside the installation chute.

[0012] Preferably, on the front end surface of the lathe base, there are two cabinet doors. One side of each cabinet door is rotatably connected to the lathe base through a damping hinge. On the other side of each cabinet door, a handle is installed.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The upper part of the lathe of the present utility model adopts an inclined pedestal structure, and the lead screw seat located on the inclined pedestal is inclined forward. When it is necessary to repair, maintain or replace the tool rest, personnel do not need to bend down, which improves the replacement convenience and solves the problem that the tool holder and the lead screw shaft transmission mechanism of the existing device are in a horizontal position. Since the tool holder needs to frequently replace tools according to different processing requirements, and when replacing in the horizontal position, personnel need to bend down to operate, which is rather inconvenient. The present utility model is provided with five installation chutes on the tool rest, which can be used to install five different tools, and the tool rest adopts a turntable structure. During use, the output end of the stepping motor drives the active bevel gear to rotate, so that it meshes and drives with the driven bevel gear, and then the turntable of the tool rest can be controlled to rotate to achieve the effect of swapping different tools, significantly improving the use convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the internal structure of the side lead screw seat of the present utility model;

[0016] Figure 3 is a schematic diagram of the internal structure of the turntable transmission seat of the present utility model;

[0017] In the figure: 1, lathe base; 101, inclined pedestal; 2, support seat; 3, cabinet door; 4, damping hinge; 5, handle; 6, lead screw seat; 7, ball screw shaft; 8, servo motor; 9, slide table; 10, connecting seat; 11, turntable transmission seat; 12, tool rest turntable; 13, installation chute; 14, guide bar; 15, locking hole; 16, stepping motor; 17, workpiece positioning table; 18, three-jaw chuck; 19, hydraulic cylinder; 20, driven bevel gear; 21, active bevel gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Please refer to Figures 1-3 , an embodiment provided by the present utility model: A bar stock processing mechanism includes a lathe base 1, a support seat 2 is installed at the lower end of the lathe base 1, a workpiece positioning table 17 is installed above one end of the lathe base 1, and a three-jaw chuck 18 is installed at the front end of the workpiece positioning table 17;

[0020] It further includes:

[0021] The inclined pedestal 101 is arranged above the lathe base 1, and the inclined pedestal 101 is integrally formed with the lathe base 1. A lead screw base 6 is installed on the outer wall of the inclined pedestal 101. A ball screw shaft 7 is installed inside the lead screw base 6. One end of the lead screw base 6 is installed with a servo motor 8. The output end of the servo motor 8 penetrates and extends into the inside of the lead screw base 6 and is in transmission connection with the ball screw shaft 7.

[0022] The sliding table 9 is installed inside the lead screw base 6 and is in transmission connection with the ball screw shaft 7. A connecting seat 10 is installed above the sliding table 9. A turntable transmission seat 11 is installed above the connecting seat 10. A tool rest turntable 12 is installed above the turntable transmission seat 11. Installation chutes 13 are provided around the inside of the tool rest turntable 12, and there are five installation chutes 13.

[0023] Please refer to Figure 2 , both sides inside the sliding table 9 are installed with hydraulic cylinders 19. The output ends of the hydraulic cylinders 19 penetrate and extend outside the connecting seat 10 and are in transmission connection with the turntable transmission seat 11. The hydraulic cylinders 19 can drive the turntable transmission seat 11 to move up and down by the telescoping of the output ends, so as to adjust the tool height to meet different processing requirements.

[0024] Please refer to Figure 1 and Figure 3 , a driven bevel gear 20 is installed at the bottom of the tool rest turntable 12, and the driven bevel gear 20 extends into the inside of the turntable transmission seat 11. A stepping motor 16 is installed on the outer wall of the turntable transmission seat 11. The output end of the stepping motor 16 penetrates and extends into the inside of the turntable transmission seat 11 and is installed with a driving bevel gear 21. The output end of the stepping motor 16 is in meshing transmission connection with the driven bevel gear 20 at the bottom of the tool rest turntable 12 through the driving bevel gear 21. There are five installation chutes 13 on the tool rest turntable 12, which can be used to install five different tools. When in use, the output end of the stepping motor 16 drives the driving bevel gear 21 to rotate, making it mesh with the driven bevel gear 20 for transmission, and different tools can be swapped, significantly improving the use convenience.

[0025] Please refer to Figure 1 , guide bars 14 are provided on both sides of the inner wall of the installation chute 13, and guide grooves corresponding to the guide bars 14 are provided on both sides of the tool, which can improve the accuracy during installation and prevent the tool from shifting.

[0026] Please refer to Figure 1 , locking holes 15 are provided inside the installation chute 13, and through holes corresponding to the locking holes 15 are opened on the tool, and they can be fixed with bolts and other fasteners to improve the installation tightness.

[0027] Please refer to Figure 1, a cabinet door 3 is provided on the front end face of the lathe base 1, and there are two cabinet doors 3. One side of the cabinet door 3 is rotatably connected to the lathe base 1 through a damping hinge 4, and a handle 5 is installed on the other side of the cabinet door 3. The inner side of the cabinet door 3 is a hollow storage cavity.

[0028] Working principle: During use, the upper part of this lathe adopts an inclined pedestal 101 structure. The lead screw base 6 located on the inclined pedestal 101 is inclined forward. When maintenance or replacement of the tool rest is required, personnel do not need to bend down, which improves the replacement convenience. There are five installation chutes 13 on the tool rest, which can be used to install five different tools. And the tool rest adopts a turntable structure. During use, the output end of the stepping motor 16 drives the active bevel gear 21 to rotate, so that it meshes with the driven bevel gear 20 for transmission, realizing the control of the rotation of the tool rest turntable 12 to achieve the effect of swapping different tools, significantly improving the use convenience. And the tool rest turntable 12 and the turntable transmission seat 11 at the bottom can be lifted under the action of the hydraulic cylinder 19 to further achieve the effect of height adjustment to meet different processing requirements, with high flexibility. Further, the present utility model performs processing operations on bar materials (such as wood, metal, etc.), and fixes them through the three-jaw chuck 18. Combining with the existing numerical control machine tools, it can be known that the three-jaw chuck 18 includes two ways of being fixed or rotating at high speed. When rotating, under different fixing methods, drilling and other processing of the bar material can be completed according to the self-rotation of the tool on the tool rest turntable 12 (tool turret). When the tool rest turntable 12 is fixed, the three-jaw chuck 18 controls the high-speed rotation of the bar material, and cutting or surface grinding of the bar material under the corresponding tool can be realized. The present utility model meets the processing requirements of bar materials of different lengths through the control method of the slide table 9 and the lead screw. Compared with large intelligent numerical control machine tools, the present utility model simplifies the complex structure and control method in the prior art, is suitable for simple bar material processing, and meets the processing needs of general factory workshops.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms, all of which fall within the scope of the present utility model claimed.

Claims

1. A bar processing mechanism, comprising a lathe base (1), a support base (2) being installed at the lower end of the lathe base (1), a workpiece positioning platform (17) being installed above one end of the lathe base (1), and a three-jaw chuck (18) for fixing the bar being installed at the front end of the workpiece positioning platform (17); characterized in that: The lathe base (1) is provided with an inclined platform (101), and a screw seat (6) is provided on the upper end surface of the inclined platform (101), and a ball screw shaft (7) is installed inside the screw seat (6). A servo motor (8) is installed at one end of the screw seat (6), and the output end of the servo motor (8) passes through and extends to the inside of the screw seat (6), and is connected to the ball screw shaft (7) in a transmission manner; a slide (9) is provided based on the ball screw shaft (7), and a connecting seat (10) is installed above the slide (9), and a turntable transmission seat (11) is installed above the connecting seat (10), and a tool holder turntable (12) is installed above the turntable transmission seat (11), and the tool holder turntable (12) is provided with mounting grooves (13) on all sides of the inside of the tool holder turntable (12) for mounting tools for bar processing.

2. The bar processing mechanism according to claim 1, characterized in that: The inclined platform (101) and the lathe base (1) are integrally formed.

3. The bar processing mechanism according to claim 1, characterized in that: A driven bevel gear (20) is installed at the bottom of the tool holder turntable (12), and the driven bevel gear (20) extends to the inside of the turntable transmission seat (11). A stepper motor (16) is installed on the outer wall of the turntable transmission seat (11). The output end of the stepper motor (16) passes through and extends to the inside of the turntable transmission seat (11), and is installed with an active bevel gear (21). The output end of the stepper motor (16) is meshed and connected with the driven bevel gear (20) at the bottom of the tool holder turntable (12) through the active bevel gear (21), thereby realizing the switching of the tool on the tool holder turntable (12).

4. The bar processing mechanism according to claim 1, characterized in that: The slide (9) and the connecting seat (10) are arranged to be telescopic, including hydraulic cylinders (19) installed on both sides of the slide (9), the output end of the hydraulic cylinder (19) passes through and extends to the outside of the connecting seat (10), and is connected to the turntable transmission seat (11) in a transmission manner.

5. The bar processing mechanism according to claim 1, characterized in that: Guide bars (14) are provided on both sides of the inner wall of the installation slide groove (13).

6. A bar processing mechanism according to claim 1, characterized in that: A locking hole (15) is provided inside the installation slide groove (13).

7. A bar processing mechanism according to claim 1, characterized in that: A cabinet door (3) is arranged on the front end surface of the lathe base (1), and two cabinet doors (3) are arranged. One side of the cabinet door (3) is rotatably connected to the lathe base (1) via a damping hinge (4), and a handle (5) is installed on the other side of the cabinet door (3).

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