Double-tool-turret lathe capable of machining different parts of workpiece

Abstract

The utility model discloses a double-tool-turret lathe capable of machining different parts of a workpiece, and relates to the technical field of numerical control machining equipment. The device comprises a rack and a workbench fixed to the upper side of the rack, a first main shaft mechanism, a first X-axis conveying mechanism located on one side of the first main shaft mechanism and two second X-axis conveying mechanisms located on one side of the first X-axis conveying mechanism are arranged on the workbench, a second main shaft mechanism is arranged on the first X-axis conveying mechanism, and the second main shaft mechanism is arranged on the second X-axis conveying mechanism. And a tool turret mechanism is arranged on the second X-axis conveying mechanism. Through the arrangement of the first main shaft mechanism, the second main shaft mechanism and the double-tool-turret mechanism, the multi-process automatic machining of different parts of a workpiece can be realized by matching with the movement control of the second X-axis conveying mechanism and the Y-axis conveying mechanism, the problems of workpiece displacement, vibration, frequent shutdown adjustment and the like caused by the clamping limitation of a single main shaft of the lathe are reduced, and the machining efficiency is improved. And the production efficiency of processing is effectively improved.

Description

A twin-turret lathe capable of machining different parts of a workpiece Technical Field

[0001] This utility model belongs to the field of CNC machining equipment, specifically, it relates to a double-turret lathe capable of machining different parts of a workpiece. Background Technology

[0002] A lathe is a machine tool primarily used to machine rotating workpieces using a cutting tool. It is the most important type of metal cutting machine tool, and is the most numerous and prevalent type in general machine manufacturing plants; it is also known as the "mother machine." Drills, reamers, taps, dies, and knurling tools can also be used on lathes for various machining operations. The function of a lathe is to cut rotating surfaces of various sizes and shapes, as well as helical surfaces.

[0003] Common lathes on the market include conventional lathes and CNC lathes. Conventional lathes require manual reading and tool feeding, which is inefficient and has low machining accuracy. Most CNC lathes currently have only one spindle and tool turret. The workpiece is clamped by the spindle and driven to rotate at high speed. The tool is then mounted on the tool turret. The tool turret is controlled by CNC to move along the Y and X axes, so that the tool can be controlled to feed and cut on the rotating cylinder.

[0004] Patent application CN110076362B discloses a lathe. Paragraph 0023 of the specification discloses that: when turning a workpiece on the lathe, a protective cover is used to prevent the flying of cutting chips that could cause injury to workers. In addition, after the lathe finishes machining a workpiece, the chuck releases its clamping of the material rod. The lifting mechanism controls the raising and lowering of the protective cover, which allows the operating component to drive the material rod to move a certain position before the chuck clamps the material rod again. This eliminates the need for manual movement of the material rod. Furthermore, this operation makes the movement distance of the material rod more stable.

[0005] In practical use, the following defects were discovered: In the field of machining, the lathe, as a core piece of equipment, plays a crucial role in the machining quality by enabling it to position and fix workpieces. However, current lathes exhibit limitations when positioning and fixing different parts of workpieces, especially when clamping shaft workpieces of varying specifications, where instability is a prominent issue. Due to the differences in diameter, length, and stepped structures among shaft workpieces, existing lathe positioning devices struggle to quickly adapt to these variations. When clamping shaft workpieces of different specifications, it is often impossible to provide uniform and sufficient clamping force based on the specific dimensions and structural characteristics of the workpiece. This leads to slight displacement or vibration of the workpiece during machining, i.e., instability. This instability directly makes adjusting the workpiece at the machining location extremely difficult, requiring operators to frequently stop the machine to adjust the workpiece position and clamping force. This not only reduces machining efficiency but, more seriously, negatively impacts the machining process. During machining, workpiece instability can cause the relative position of the tool and workpiece to shift, resulting in dimensional deviations, excessive surface roughness, and other problems that fail to meet machining requirements.

[0006] To address this, a double-turret lathe capable of machining different parts of a workpiece is proposed to overcome the aforementioned drawbacks. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a double turret lathe capable of machining different parts of a workpiece.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0009] A double-turret lathe capable of machining different parts of a workpiece includes a frame and a worktable fixed to the upper side of the frame. The worktable is provided with a first spindle mechanism, a first X-axis conveying mechanism located on one side of the first spindle mechanism, and two second X-axis conveying mechanisms located on one side of the first X-axis conveying mechanism. The first X-axis conveying mechanism is provided with the second spindle mechanism, and the second X-axis conveying mechanism is provided with the turret mechanism.

[0010] The turret mechanism includes a Y-axis transport mechanism, on which a tool turntable is provided, and on which multiple milling and turning tools are provided.

[0011] Optionally, the first X-axis conveying mechanism includes a first X-axis conveying motor and two first X-axis guide rails fixed on the worktable, and a first lead screw is provided at the output end of the first X-axis conveying motor.

[0012] Optionally, a first X-axis slider is slidably fitted on the first X-axis guide rail, and a first X-axis slide is provided between the two first X-axis sliders. A first threaded hole is provided at the bottom of the first X-axis slide, and the first lead screw is threaded into the first threaded hole.

[0013] Optionally, the second spindle mechanism includes a first support platform fixed to the first X-axis slide, a mounting base is provided on the first support platform, a first drive motor is provided on the mounting base, a reducer is provided at the output end of the first drive motor, and a first lathe fixture is provided on the reducer.

[0014] Optionally, the first spindle mechanism includes a second drive motor and a second support platform fixed on the worktable. A second lathe fixture is rotatably fitted on the second support platform. A flywheel is provided on one end of the second lathe fixture and the output end of the second drive motor. A belt is provided between the two flywheels.

[0015] Optionally, the second X-axis conveying mechanism includes a second X-axis conveying motor and two second X-axis guide rails fixed on the worktable, and a second lead screw is provided at the output end of the second X-axis conveying motor.

[0016] Optionally, a second X-axis slider is slidably fitted on the second X-axis guide rail, and a second X-axis slide is provided between the two second X-axis sliders. A second threaded hole is provided at the bottom of the second X-axis slide, and the second lead screw is threaded into the second threaded hole.

[0017] Optionally, the turret mechanism includes a positioning frame fixed to the second X-axis slide, and the Y-axis conveying mechanism is fixed to the positioning frame.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0019] By setting up a first spindle mechanism, a second spindle mechanism, and a double turret mechanism, and coordinating with the movement control of the second X-axis conveyor mechanism and the Y-axis conveyor mechanism, multi-process automated processing of different parts of the workpiece can be realized, reducing problems such as workpiece displacement, vibration, and frequent machine stops for adjustment caused by the limitations of single spindle clamping on lathes, and effectively improving the production efficiency of processing;

[0020] The first and second spindle mechanisms clamp workpieces using the second lathe fixture and the first lathe fixture, respectively, and the second spindle mechanism can move along the X-axis via the first X-axis conveying mechanism. This design allows for adjustment of the distance between the two spindles to accommodate differences in the length and diameter of shaft-type workpieces, achieving precise positioning of workpieces of different specifications and reducing uneven clamping force or vibration problems caused by specification differences when clamping with a single spindle.

[0021] Each second X-axis conveyor mechanism is equipped with a Y-axis conveyor and a tool turntable, which can be equipped with multiple turning and milling tools and automatically switch between them. By controlling the turret to move along the X and Y axes through CNC, multiple processes such as turning and milling can be performed on different parts of the workpiece (such as outer circle, end face, thread, etc.) sequentially or simultaneously, reducing manual tool changing and downtime adjustment time, and significantly improving processing efficiency.

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0024] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of the first support platform structure according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the second X-axis guide rail structure according to an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the first X-axis guide rail structure according to an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the tool turntable structure according to an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of the first lathe fixture structure according to an embodiment of the present invention.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] Frame 1, Worktable 2, First X-axis conveyor mechanism 3, First X-axis conveyor motor 301, First lead screw 302, First X-axis guide rail 303, First X-axis slider 304, First X-axis slide table 305, First threaded hole 306, Second X-axis conveyor mechanism 4, Second X-axis conveyor motor 401, Second lead screw 402, Second X-axis guide rail 403, Second X-axis slider 404, Second X-axis slide table 405, Second threaded hole 406, First spindle mechanism 5, Second support platform 501, Second drive motor 502, Second lathe fixture 503, Belt 504, Second spindle mechanism 6, First support platform 601, Mounting base 602, Reducer 603, First drive motor 604, First lathe fixture 605, Turret mechanism 7, Positioning frame 701, Y-axis conveyor mechanism 702, Tool turntable 703, Milling cutter 704.

[0032] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Please refer to Figures 1-6. In this embodiment, a double-turret lathe capable of machining different parts of a workpiece is provided. It includes a frame 1 and a worktable 2 fixed on the upper side of the frame 1. The worktable 2 is provided with a first spindle mechanism 5, a first X-axis conveying mechanism 3 located on one side of the first spindle mechanism 5, and two second X-axis conveying mechanisms 4 located on one side of the first X-axis conveying mechanism 3. The first X-axis conveying mechanism 3 is provided with a second spindle mechanism 6, and the second X-axis conveying mechanism 4 is provided with a turret mechanism 7.

[0035] The turret mechanism 7 includes a Y-axis transport mechanism 702, on which a tool turntable 703 is mounted, and on which multiple milling and turning tools 704 are mounted.

[0036] Specifically, the first spindle mechanism 5 and the second spindle mechanism 6 clamp the workpiece through the second lathe fixture 503 and the first lathe fixture 605, respectively. The second drive motor 502 drives the second lathe fixture 503 to rotate through the belt 504. The first drive motor 604 drives the first lathe fixture 605 to rotate through the reducer 603, thereby achieving high-speed rotation of the workpiece. The first X-axis conveying mechanism 3 is threadedly engaged with the first X-axis slide 305 through the first lead screw 302. The second X-axis conveying mechanism 4 is threadedly engaged with the second X-axis slide 405 through the second lead screw 402, driving the second spindle mechanism 6 and the tool turret mechanism 7 to move along the X-axis. The Y-axis conveying mechanism 702 drives the tool turntable 703 to move along the Y-axis, positioning the milling cutter 704 to the workpiece to be processed. The multiple milling cutters on the tool turntable 703 can be switched as needed. Combined with the clamping and positioning of different parts of the workpiece by the dual spindles, automated processing of multiple processes and multiple parts of the workpiece is achieved.

[0037] By setting up the first spindle mechanism 5, the second spindle mechanism 6 and the double turret mechanism 7, and cooperating with the movement control of the second X-axis conveyor mechanism 4 and the Y-axis conveyor mechanism 702, multi-process automated processing of different parts of the workpiece can be realized, reducing the problems of workpiece displacement, vibration and frequent machine stop adjustment caused by the limitations of single spindle clamping of lathe, and improving the efficiency of workpiece processing.

[0038] As shown in Figures 1-6, the first X-axis conveying mechanism 3 of this embodiment includes a first X-axis conveying motor 301 fixed on the worktable 2 and two first X-axis guide rails 303. A first lead screw 302 is provided at the output end of the first X-axis conveying motor 301. First X-axis sliders 304 are slidably fitted on the first X-axis guide rails 303. A first X-axis slide 305 is provided between the two first X-axis sliders 304. A first threaded hole 306 is provided at the bottom of the first X-axis slide 305, and the first lead screw 302 is threaded into the first threaded hole 306. The second spindle mechanism 6 includes a first support platform 601 fixed on the first X-axis slide 305. A mounting base 602 is provided on the first support platform 601. A first drive motor 604 is provided on the mounting base 602. A reducer 603 is provided at the output end of the first drive motor 604. A first lathe fixture 605 is provided on the reducer 603. The first spindle mechanism 5 includes components fixed on the worktable. The second drive motor 502 and the second support table 501 are mounted on the worktable 2. A second lathe fixture 503 is rotatably fitted on the second support table 501. A flywheel is provided on one end of the second lathe fixture 503 and the output end of the second drive motor 502. A belt 504 is provided between the two flywheels. The second X-axis conveying mechanism 4 includes a second X-axis conveying motor 401 and two second X-axis guide rails 403 fixed on the worktable 2. A second lead screw 402 is provided on the output end of the second X-axis conveying motor 401. A second X-axis slider 404 is slidably fitted on the second X-axis guide rail 403. A second X-axis slide 405 is provided between the two second X-axis sliders 404. A second threaded hole 406 is opened at the bottom of the second X-axis slide 405. The second lead screw 402 is threaded into the second threaded hole 406. The turret mechanism 7 includes a positioning frame 701 fixed on the second X-axis slide 405. The Y-axis conveying mechanism 702 is fixed on the positioning frame 701.

[0039] The first spindle mechanism 5 drives the second lathe fixture 503 to rotate via the second drive motor 502 and belt 504. The second spindle mechanism 6 drives the first lathe fixture 605 to rotate via the first drive motor 604 and reducer 603, realizing the clamping and rotation of the workpiece by the dual spindles. The first X-axis conveying mechanism 3 drives the first lead screw 302 to rotate via the first X-axis conveying motor 301, which drives the first X-axis slide 305 to move along the first X-axis guide rail 303 through threaded engagement, realizing the X-axis positioning of the second spindle mechanism 6. Similarly, the second X-axis conveying mechanism 4 drives the turret mechanism 7 to move along the X-axis, and the Y-axis conveying mechanism 702 drives the tool turntable 703 to move along the Y-axis. With the switching of multiple milling and turning tools 704, the machining of different parts of the workpiece can be realized. The coordinated movement of the dual spindles and dual turrets can complete multiple machining operations of the workpiece simultaneously or sequentially, improving efficiency.

[0040] The first spindle mechanism 5 and the second spindle mechanism 6 clamp workpieces via the second lathe fixture 503 and the first lathe fixture 605, respectively. The second spindle mechanism 6 can move along the X-axis via the first X-axis conveying mechanism 3. This design allows for adjustment of the distance between the two spindles to accommodate differences in the length and diameter of shaft-type workpieces, enabling precise positioning of workpieces of different specifications and reducing uneven clamping force or vibration problems caused by specification differences when clamping with a single spindle.

[0041] Each second X-axis conveyor mechanism 4 is equipped with a turret mechanism 7, a Y-axis conveyor mechanism 702, and a tool turntable 703. Multiple turning and milling tools 704 can be installed and automatically switched. By controlling the turret to move along the X-axis and Y-axis through CNC control, multiple processes such as turning and milling can be performed on different parts of the workpiece (such as outer circle, end face, thread, etc.) sequentially or simultaneously, reducing manual tool changing and downtime adjustment time, and significantly improving processing efficiency.

[0042] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A double-turret lathe capable of machining different parts of a workpiece, comprising: A frame (1) and a worktable (2) fixed on the upper side of the frame (1) are characterized in that the worktable (2) is provided with a first spindle mechanism (5), a first X-axis conveying mechanism (3) located on one side of the first spindle mechanism (5), and two second X-axis conveying mechanisms (4) located on one side of the first X-axis conveying mechanism (3). The first X-axis conveying mechanism (3) is provided with a second spindle mechanism (6), and the second X-axis conveying mechanism (4) is provided with a turret mechanism (7). The turret mechanism (7) includes a Y-axis conveying mechanism (702), the Y-axis conveying mechanism (702) is provided with a tool turntable (703), and the tool turntable (703) is provided with a plurality of milling cutters (704).

2. A double-turret lathe capable of machining different parts of a workpiece according to claim 1, characterized in that, The first X-axis conveying mechanism (3) includes a first X-axis conveying motor (301) and two first X-axis guide rails (303) fixed on the worktable (2). The output end of the first X-axis conveying motor (301) is provided with a first lead screw (302).

3. A double-turret lathe capable of machining different parts of a workpiece according to claim 2, characterized in that, The first X-axis guide rail (303) is slidably fitted with a first X-axis slider (304), and a first X-axis slide (305) is provided between the two first X-axis sliders (304). A first threaded hole (306) is provided at the bottom of the first X-axis slide (305), and the first lead screw (302) is threadedly fitted in the first threaded hole (306).

4. A double-turret lathe capable of machining different parts of a workpiece according to claim 3, characterized in that, The second spindle mechanism (6) includes a first support platform (601) fixed on the first X-axis slide (305), a mounting base (602) is provided on the first support platform (601), a first drive motor (604) is provided on the mounting base (602), a reducer (603) is provided at the output end of the first drive motor (604), and a first lathe fixture (605) is provided on the reducer (603).

5. A double-turret lathe capable of machining different parts of a workpiece according to claim 1, characterized in that, The first spindle mechanism (5) includes a second drive motor (502) and a second support platform (501) fixed on the worktable (2). A second lathe fixture (503) is rotatably fitted on the second support platform (501). A flywheel is provided on one end of the second lathe fixture (503) and the output end of the second drive motor (502). A belt (504) is provided between the two flywheels.

6. A double-turret lathe capable of machining different parts of a workpiece according to claim 1, characterized in that, The second X-axis conveying mechanism (4) includes a second X-axis conveying motor (401) and two second X-axis guide rails (403) fixed on the worktable (2). The output end of the second X-axis conveying motor (401) is provided with a second lead screw (402).

7. A double-turret lathe capable of machining different parts of a workpiece according to claim 6, characterized in that, The second X-axis guide rail (403) is slidably fitted with a second X-axis slider (404), and a second X-axis slide (405) is provided between the two second X-axis sliders (404). A second threaded hole (406) is provided at the bottom of the second X-axis slide (405), and the second lead screw (402) is threadedly fitted in the second threaded hole (406).

8. A double-turret lathe capable of machining different parts of a workpiece according to claim 7, characterized in that, The turret mechanism (7) includes a positioning frame (701) fixed on the second X-axis slide (405), and the Y-axis conveying mechanism (702) is fixed on the positioning frame (701).

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