A roughing and finishing synchronous machining machine tool

Abstract

The utility model discloses a rough turning and finish turning synchronous processing machine tool, it belongs to the field of processing machine tool, including base, the both ends of base are equipped with two opposite tailstock chucks, and the workpiece can be clamped through two tailstock chucks, and the base between two tailstock chucks is equipped with tool rest, and the tool rest can move on the base between two tailstock chucks, and the tool rest includes tool rest seat, and two movable tool holders are equipped on the tool rest seat, and two tool holders are arranged respectively on the center line of tailstock both sides, and finish turning cutter tower and rough turning cutter tower are equipped respectively on two tool holders, and the finish turning turning tool tip of finish turning cutter tower and the rough turning turning tool tip of rough turning cutter tower all point to the extension line of tailstock center line, and the rough turning turning tool on rough turning cutter tower is at least ahead of finish turning turning tool on finish turning cutter tower in the length direction of workpiece by one processing amount. The above structure can realize rough turning and finish turning on a machine tool synchronously, and does not need to change tool and shift workpiece, and greatly improves processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, specifically to a machine tool for simultaneous roughing and finishing. Background Technology

[0002] Currently, when machining shaft or tube parts on a lathe, two processes are often required: rough turning and finish turning. Rough turning involves a larger depth of cut to ensure the approximate dimensions of the workpiece, while finish turning involves a smaller depth of cut to ensure the surface quality of the workpiece.

[0003] In actual machining, the workpiece needs to be roughed once, and then the tool holder is switched to the finish turning tool for another machining. If dealing with batch production, in order to ensure processing efficiency and avoid tool adjustment each time, the workpiece is often processed on different machine tools. Specifically, rough turning is completed on one machine tool, and then the workpiece is transferred to another machine tool for finish turning. However, the workpiece clamping and positioning process wastes some time, especially when dealing with large workpieces, each transfer and clamping takes even more time.

[0004] In view of the problems existing in the prior art, this utility model designs and manufactures a machine tool for simultaneous roughing and finishing to overcome the above defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a machine tool for simultaneous roughing and finishing, which can simultaneously perform roughing and finishing on one machine tool without changing tools or transferring workpieces, greatly improving processing efficiency and ensuring processing accuracy.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a roughing and finishing machining machine tool, including a base, with two opposing center seats at both ends of the base, the distance between the two center seats being adjustable, and the workpiece being clamped by the two center seats; A tool holder is provided on the base between the two center seats. The tool holder is movable on the base between the two center seats, and the direction of movement of the tool holder is consistent with the direction of distance adjustment of the two center seats. The tool holder includes a tool holder base, on which two movable tool mounting seats are provided. The two tool mounting seats are respectively located on both sides of the center line of the center seat. The two tool mounting seats are respectively provided with a finishing turret and a roughing turret. The finishing tool tip of the finishing turret and the roughing tool tip of the roughing turret both point to the extension line of the center line of the center seat. The roughing tool on the roughing turret is machined at least one machining increment ahead of the finishing tool on the finishing turret in the length direction of the workpiece.

[0007] Preferably, the feed direction of the finishing turning tool tip and the feed direction of the roughing turning tool tip are located in the same plane.

[0008] Preferably, the base is provided with at least two first guide rails, and the bottom of the tool holder is provided with a first slider that slides in cooperation with the first guide rails; The base is also provided with a first lead screw, and the tool holder is provided with a first lead screw nut that cooperates with the first lead screw. The first lead screw is connected to a first servo motor, which is fixed on the base.

[0009] Preferably, the two tool mounts can simultaneously move closer to each other or simultaneously move further away from each other.

[0010] Preferably, the tool holder is provided with a second guide rail, the second guide rail is perpendicular to the first guide rail, and the bottom of both tool mounting seats is provided with a second slider that slides in cooperation with the second guide rail; The tool holder is also provided with a second lead screw, the threads at both ends of the second lead screw are turned in opposite directions, and the bottom of the two tool mounting seats is provided with a second lead screw nut that respectively cooperates with the two ends of the second lead screw; The second lead screw is connected to a second servo motor, which is fixed on the tool holder.

[0011] Preferably, the pitch of the threads with different directions of rotation at both ends of the second lead screw is the same.

[0012] Preferably, the two top seats can move closer to each other or further apart at the same time.

[0013] Preferably, one of the top seats is a fixed top seat, and the other top seat is a movable top seat; The fixed center seat is fixed on the base, and the bottom of the movable center seat is provided with a third slider. The movable center seat slides on the first guide rail via the third slider. The base is also provided with a third lead screw, and the bottom of the movable top seat is provided with a third lead screw nut that cooperates with the third lead screw. The third lead screw is connected to a third servo motor, which is fixed on the base.

[0014] Preferably, the fixed center seat includes a center mounting base and a rotating active center, the active center being connected to a drive motor that drives the active center to rotate, and the drive motor being fixed on the center mounting base.

[0015] Preferably, both the top plate and the tool holder are disposed on the inclined surface at the front end of the base.

[0016] The advantages of this utility model are: 1. This utility model provides both a finishing turning tool and a roughing turning tool on a machine tool, with the two tools positioned on opposite sides of the workpiece. On one hand, the tool holder can complete both roughing and finishing turning of the workpiece simultaneously by machining it once along its length, thus improving machining efficiency. On the other hand, the two tools can apply cutting force to the workpiece simultaneously during turning, and the opposing structure can reduce the torque borne by the workpiece, thereby improving machining accuracy.

[0017] 2. In this invention, the roughing tool is processed earlier than the finishing tool, ensuring that after the roughing tool has a large machining allowance, the finishing tool performs high-precision machining with a small allowance.

[0018] 3. This utility model allows for the simultaneous radial feed of both the finishing turning tool and the roughing turning tool to machine the workpiece. The adjustment of both tools can be completed in one operation, making the operation simple and efficient.

[0019] 4. The movable guide rail at the bottom of the tool holder of this utility model directly utilizes the movable guide rail at the bottom of the center seat, and multiple structures are applied simultaneously with one set of guide rails, which improves the utilization rate of the guide rails. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a machine tool that performs roughing and finishing machining simultaneously. Figure 2 This is a partial schematic diagram of the two cutting tools of this utility model; Figure 3 This is a schematic diagram of the tool holder of this utility model.

[0021] In the diagram: 1. Base; 2. Fixed center seat; 3. Movable center seat; 4. Tool post seat; 5. Tool mounting seat; 6. Roughing turret; 7. Finishing turret; 8. First guide rail; 9. First leadscrew; 10. First servo motor; 11. Drive motor; 12. Second guide rail; 13. Second leadscrew; 14. Second servo motor; 61. Roughing tool; 71. Finishing tool. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a roughing and finishing machining machine tool includes a base 1. Two opposing center seats are provided at both ends of the base 1. One center seat includes an active rotating center, and the other center seat includes a driven rotating center. The distance between the two center seats can be adjusted, and the workpiece can be clamped by the two center seats.

[0024] A tool holder is provided on the base 1 between the two center seats. The tool holder can move back and forth on the base 1 between the two center seats. The direction of movement of the tool holder is consistent with the direction of distance adjustment between the two center seats.

[0025] This utility model tool holder specifically includes a tool holder base 4, on which two movable tool mounting seats 5 are provided. The two tool mounting seats 5 are respectively located on both sides of the center line of the center seat. The two tool mounting seats 5 are respectively provided with a finishing turning turret 7 and a roughing turning turret 6. The tool tips of the finishing turning tool 71 of the finishing turning turret 7 and the roughing turning tool 61 of the roughing turning turret 6 both point to the extension line of the center line of the center seat, ensuring that both the finishing turning tool 71 and the roughing turning tool 61 can point to the center of the workpiece to be processed.

[0026] The roughing tool 61 on the roughing turret 6 is machined at least one machining allowance ahead of the finishing tool 71 on the finishing turret 7 in the length direction of the workpiece. The purpose is to ensure that the roughing tool 61 performs machining earlier than the finishing tool 71, so that after the roughing tool 61 has a large machining allowance, the finishing tool 71 can perform high-precision machining with a small allowance on this basis.

[0027] This invention provides a machine tool with both a finishing turning tool 71 and a rough turning tool 61, with the two tools positioned on opposite sides of the workpiece. The tool holder completes both rough and finishing turning of the workpiece simultaneously by machining it once along its length, thus improving machining efficiency.

[0028] The feed direction of the finishing turning tool 71 and the feed direction of the roughing turning tool 61 are preferably located in the same plane. When the two tools are turning, they can apply cutting force to the workpiece at the same time. The opposing structure can reduce the torque on the workpiece, thereby improving the machining accuracy.

[0029] Specifically, the base 1 is provided with at least two first guide rails 8, the bottom of the tool holder 4 is provided with a first slider that slides in cooperation with the first guide rails 8, the base 1 is also provided with a first lead screw 9, the tool holder 4 is provided with a first lead screw nut that cooperates with the first lead screw 9, the first lead screw 9 is connected to a first servo motor 10, and a reducer can also be connected between the first servo motor and the first lead screw. The first servo motor 10 is fixed on the base 1. Through this structure, the tool holder can move back and forth on the base 1 between the two center seats.

[0030] The two tool mounting seats 5 of this utility model are preferably able to move closer to each other or move further apart simultaneously. Specifically, the tool holder 4 is provided with a second guide rail 12, which is perpendicular to the first guide rail 8. The bottom of each tool mounting seat 5 is provided with a second slider that slides in cooperation with the second guide rail 12. The tool holder 4 is also provided with a second lead screw 13, the threads at both ends of the second lead screw 13 are turned in opposite directions, and the bottom of each tool mounting seat 5 is provided with a second lead screw nut that cooperates with both ends of the second lead screw 13. The second lead screw 13 is connected to a second servo motor 14. Specifically, a reducer can also be connected between the second servo motor and the second lead screw. The second servo motor 14 is fixed on the tool holder 4.

[0031] The threads with different directions of rotation at both ends of the second lead screw 13 have the same pitch, ensuring that the movement distance of the two tools is the same. In the above structure, the finishing turning tool 71 and the roughing turning tool 61 are simultaneously fed radially to machine the workpiece and move away from the workpiece. The adjustment of the two tools can be completed in one step, making the operation simple and efficient.

[0032] The two center seats of this utility model can move closer or further apart at the same time. Its structure is similar to the moving structure of two tool mounting seats 5. Both are made possible by lead screws with different directions of rotation at both ends. Of course, a structure in which one center seat moves while the other center seat moves can also be used.

[0033] Specifically, one center seat is designated as a fixed center seat 2, and the other center seat is designated as a movable center seat 3. The fixed center seat 2 is fixed on the base 1, and the movable center seat 3 has a third slider at its bottom. The movable center seat 3 slides on the first guide rail 8 via the third slider. The base 1 also has a third lead screw, and the bottom of the movable center seat 3 has a third lead screw nut that cooperates with the third lead screw. The third lead screw is connected to a third servo motor. Specifically, a reducer can also be connected between the third servo motor and the third lead screw. The third servo motor is fixed on the base 1. Finally, the workpiece is clamped by the movement of the movable center seat 3 in coordination with the fixed center seat 2.

[0034] The fixed center seat 2 of this utility model specifically includes a center mounting base and a rotating active center. The active center is connected to a drive motor 11 that drives the active center to rotate, and the drive motor 11 is fixed on the center mounting base.

[0035] In addition, the center seat and the tool holder of this utility model are preferably set on the inclined surface at the front end of the base 1. This structure not only facilitates the loading and unloading of workpieces, but also facilitates the collection of iron filings, which can prevent a large number of iron filings from affecting the transmission of the lead screw. The first lead screw 9 of this utility model is preferably set at the top of the inclined surface, which can prevent iron filings from falling onto the first lead screw 9.

[0036] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A machine tool for simultaneous roughing and finishing turning, characterized in that, Includes a base (1), with two opposing top seats at both ends of the base (1), the distance between the two top seats can be adjusted, and the workpiece can be clamped by the two top seats; A tool holder is provided on the base (1) between the two top seats. The tool holder can move on the base (1) between the two top seats. The direction of movement of the tool holder is consistent with the direction of distance adjustment of the two top seats. The tool holder includes a tool holder base (4), on which two movable tool mounting bases (5) are provided. The two tool mounting bases (5) are respectively located on both sides of the center line of the center seat. The two tool mounting bases (5) are respectively provided with a finishing turret (7) and a roughing turret (6). The tips of the finishing tool (71) of the finishing turret (7) and the tips of the roughing tool (61) of the roughing turret (6) both point to the extension line of the center line of the center seat. The roughing tool (61) on the roughing turret (6) is machined at least one machining amount ahead of the finishing tool (71) on the finishing turret (7) in the length direction of the workpiece.

2. The machine tool for simultaneous roughing and finishing turning according to claim 1, characterized in that, The feed direction of the tip of the finishing turning tool (71) and the feed direction of the tip of the roughing turning tool (61) are located in the same plane.

3. The machine tool for simultaneous roughing and finishing turning according to claim 1, characterized in that, The base (1) is provided with at least two first guide rails (8), and the bottom of the tool holder (4) is provided with a first slider that slides in cooperation with the first guide rails (8); The base (1) is also provided with a first lead screw (9), and the tool holder (4) is provided with a first lead screw nut that cooperates with the first lead screw (9); The first lead screw (9) is connected to the first servo motor (10), and the first servo motor (10) is fixed on the base (1).

4. The machine tool for simultaneous roughing and finishing turning according to claim 3, characterized in that, The two tool mounts (5) can simultaneously approach each other or simultaneously move away from each other.

5. A machine tool for simultaneous roughing and finishing turning according to claim 4, characterized in that, The tool holder (4) is provided with a second guide rail (12), which is perpendicular to the first guide rail (8). The bottom of each of the two tool mounting seats (5) is provided with a second slider that slides in cooperation with the second guide rail (12). The tool holder (4) is also provided with a second lead screw (13), the threads at both ends of the second lead screw (13) are opposite, and the bottom of the two tool mounting seats (5) are provided with second lead screw nuts that respectively cooperate with the two ends of the second lead screw (13); The second lead screw (13) is connected to a second servo motor (14), which is fixed on the tool holder (4).

6. A machine tool for simultaneous roughing and finishing turning according to claim 5, characterized in that, The pitch of the threads with different directions of rotation at both ends of the second lead screw (13) is the same.

7. A machine tool for simultaneous roughing and finishing turning according to claim 1, characterized in that, The two aforementioned top seats can move closer to or further away from each other.

8. A machine tool for simultaneous roughing and finishing turning according to claim 1, characterized in that, One of the top seats is a fixed top seat (2), and the other top seat is a movable top seat (3). The fixed top seat (2) is fixed on the base (1), and the bottom of the movable top seat (3) is provided with a third slider. The movable top seat (3) slides on the first guide rail (8) through the third slider. The base (1) is also provided with a third lead screw, and the bottom of the movable top seat (3) is provided with a third lead screw nut that cooperates with the third lead screw; The third lead screw is connected to a third servo motor, which is fixed on the base (1).

9. A machine tool for simultaneous roughing and finishing turning according to claim 8, characterized in that, The fixed center seat (2) includes a center mounting base and a rotating active center. The active center is connected to a drive motor (11) that drives the active center to rotate. The drive motor (11) is fixed on the center mounting base.

10. A machine tool for simultaneous roughing and finishing turning according to claim 1, characterized in that, The top seat and the tool holder are both set on the inclined surface at the front end of the base (1).

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