A cylindrical workpiece turning tool structure

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By designing various tool structures, the problem of low efficiency in the machining of cylindrical workpieces by existing machine tools has been solved, and efficient machining of multiple processes simultaneously has been achieved.

CN224526018UActive Publication Date: 2026-07-21HANGZHOU GOOD FRIEND PRECISION MASCH CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: HANGZHOU GOOD FRIEND PRECISION MASCH CO LTD
Filing Date: 2025-07-24
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

Existing machine tools can only perform a single operation when machining cylindrical workpieces, resulting in low efficiency and the need for frequent tool changes.

Method used

Design a turning tool structure for cylindrical workpieces, including a tool fixing rail, a tool holder, an insert rod inside the cylinder, and multiple tools, to achieve simultaneous multi-pass machining, including boring and burr removal, without the need for frequent tool changes.

Benefits of technology

It enables rapid and efficient processing of cylindrical workpieces, allowing multiple processes to be performed simultaneously, thus improving processing efficiency.

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Abstract

The utility model discloses a kind of cylindrical workpiece turning tool structures, it is related to machine tool tool rest technical field, including tool fixed track, installation tool rest is fixed on the tool fixed track, the side of installation tool rest towards machine tool spindle is fixed with cylinder inside insertion rod, one end of cylinder inside insertion rod towards machine tool spindle is fixed with burr cutter and first boring cutter, the burr cutter and first boring cutter are oppositely arranged, second boring cutter is fixed on the side of cylinder inside insertion rod, second boring cutter and first boring cutter are located the same side of cylinder inside insertion rod, by setting three different tools on the cylinder inside insertion rod that stretches into the inside of cylindrical workpiece, so that two even more boring machining of synchronously carrying out can be realized.

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Description

Technical Field

[0001] This utility model relates to the field of machine tool tool holder technology, specifically to a turning tool structure for cylindrical workpieces. Background Technology

[0002] With the rapid development of modern industry, CNC machine tools have become very important processing equipment in the manufacturing industry. The efficient and precise processing of CNC machine tools can greatly meet the market requirements of manufacturers. When processing cylindrical workpieces, existing machine tools can process both the inner and outer surfaces of the cylinder. However, due to the design of the tool structure and operation mode of existing machine tools, the machine tool can only perform one processing operation when processing parts. At the same time, frequent tool changes are required for processing different positions and needs, resulting in low efficiency. Utility Model Content

[0003] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a turning tool structure for cylindrical workpieces, which solves the problem of low efficiency when existing machine tools can only perform a single operation when machining cylindrical workpieces.

[0004] Technical solution

[0005] To solve the above problems, the technical solution provided by this utility model is as follows:

[0006] A turning tool structure for a cylindrical workpiece includes a tool fixing rail, on which a tool holder is fixedly mounted. An in-cylinder insertion rod is fixedly mounted on the side of the tool holder facing the machine tool spindle. A burr cutter and a first boring cutter are fixedly mounted on the end of the in-cylinder insertion rod facing the machine tool spindle. The burr cutter and the first boring cutter are arranged opposite to each other. A second boring cutter is fixedly mounted on the side of the in-cylinder insertion rod. The second boring cutter and the first boring cutter are located on the same side of the in-cylinder insertion rod.

[0007] Furthermore, the lengths at both ends of the first boring tool and the burr tool are less than the inner diameter of the cylindrical workpiece.

[0008] Furthermore, the first boring tool and the second boring tool can simultaneously contact the inner wall of the cylindrical workpiece.

[0009] Furthermore, the first boring tool and the second boring tool are provided with several coolant nozzles on their sides.

[0010] Furthermore, a coolant pipe is provided inside the insert rod in the cylinder, and the coolant pipe is connected to the coolant nozzle.

[0011] Furthermore, the tool fixing track is provided with several grooves, and the tool mounting holder is provided with locking protrusions that cooperate with the grooves.

[0012] Furthermore, an end face knife is also fixedly mounted on the mounting knife holder, and the end face knife is perpendicular to the insertion rod inside the cylinder.

[0013] Furthermore, the end face cutter is fixedly mounted on the end face cutter holder located on the side of the mounting cutter holder.

[0014] Furthermore, the length of the burr cutter is equal to the outer diameter of the cylindrical workpiece and the thickness of the step.

[0015] Furthermore, the tool fixing rail is fixedly installed on the machine tool turret.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] The technical solution provided by this utility model enables simultaneous boring of two or more holes by setting three different cutting tools on the insert rod inside the cylindrical workpiece. The deburring tool is also directly designed on the insert rod, so that the burrs on the cylindrical workpiece can be removed without changing the tool. The side of the insert rod is also provided with an end face cutter 31, which can directly and separately process the end face and outer circle of the cylindrical workpiece. This enables rapid, efficient and convenient processing of cylindrical workpieces. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0022] Figure 4 This is a schematic diagram of the second boring tool in Embodiment 1 of this utility model;

[0023] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0024] Figure 6 This is a side view of the central frame.

[0025] 11. Tool fixing rail; 111. Groove; 2. Tool holder; 21. In-cylinder insertion rod; 22. First boring tool; 23. Deburring tool; 24. Second boring tool; 31. End face tool; 32. End face tool holder; 4. Machine tool turret; 5. Machine tool spindle; Detailed Implementation

[0026] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] Combined with appendix Figure 1-6 A turning tool structure for cylindrical workpieces includes a tool fixing rail 11, on which a tool holder 2 is mounted. The tool fixing rail 11 is used to fix and mount the tool holder 2. The tool fixing rail 11 has multiple grooves 111, which are perpendicular to the machining movement direction of the tool. The tool holder 2 also has a locking structure that can cooperate with the grooves 111. By locking the locking structure on the tool holder 2 into the grooves 111, the tool fixing rail 11 can fully abut against the tool holder 2. When the cutting tool is machining the cylindrical part, the force on the cutting tool can be evenly borne by the cutting tool fixing track 11. Furthermore, the multiple grooves 111, in conjunction with the locking structure, can provide better stability and fixation. While fully bearing the force, the multiple grooves 111 can also limit the mounting tool holder 2, ensuring that the mounting tool holder 2 remains stable under the limiting effect of the cutting tool fixing track 11 during machining. The locking structure is preferably a locking protrusion that corresponds to the groove 111 on the cutting tool fixing track 11. By locking the locking protrusion into the groove 111, both sides of the locking protrusion fully abut against the groove 111, thus limiting the mounting tool holder 2 and preventing slight movement of the mounting tool holder 2 during machining.

[0029] The tool holder 2 is equipped with an in-cylinder insertion rod 21, which is fixed to one side of the machine tool spindle 5 in the direction of the tool holder 2. The in-cylinder insertion rod 21 is placed in the same direction as the cylindrical workpiece. The in-cylinder insertion rod 21 is used to penetrate into the interior of the cylindrical workpiece. A first boring tool 22 and a deburring tool 23 are fixed on the end face of the in-cylinder insertion rod 21 in the direction of the machine tool spindle 5. The first boring tool 22 and the deburring tool 23 are fixed together on the end face of the in-cylinder insertion rod 21. The cutting tools of the first boring tool 22 and the deburring tool 23 face opposite directions, and the length between the endpoints of the cutting tools in opposite directions of the first boring tool 22 and the deburring tool 23 is less than the inner diameter of the cylindrical workpiece. Thus, the first boring tool 22 and the deburring tool 23 can not only extend into the cylindrical workpiece, but also, as needed, either the first boring tool 22 or the deburring tool 23 can be selected to process the cylindrical workpiece.

[0030] The first boring tool 22 is used to machine the bore inside the cylindrical workpiece. When using the first boring tool 22 to machine the workpiece, it is only necessary to insert the first boring tool 22 and the deburring tool 23 into the inside of the cylindrical workpiece so that the first boring tool 22 contacts the inner wall of the cylindrical workpiece. At this time, since the length of both ends of the first boring tool 22 and the deburring tool 23 is less than the inner diameter of the cylindrical workpiece, the deburring tool 23 located inside the cylindrical workpiece will not contact the inner wall of the cylindrical workpiece on the other side of the inner wall of the cylindrical workpiece that is in contact with the first boring tool 22. This ensures that the first boring tool 22 can perform boring machining on the cylindrical workpiece, and the deburring tool 23 will not contact the cylindrical workpiece.

[0031] The burr cutter 23 is located on the outside of the cylindrical workpiece to remove burrs from the steps of the cylindrical workpiece. The cylindrical workpiece has outer circles at both ends, and an annular step is set near the outer circle. The burr cutter 23 extends into the gap between the annular step and the outer circle, thereby removing burrs from the side of the outer circle facing the step. The tool holder 2 moves the burr cutter 23 on the inner insertion rod 21 of the cylinder to the outside of the cylindrical workpiece, and the burr cutter 23 is brought into contact with the end face of the cylindrical workpiece. Thus, when the cylindrical workpiece rotates, the burr cutter 23 abuts against the end face of the cylindrical workpiece, thereby removing burrs from the end face of the cylindrical workpiece.

[0032] The length of the deburring cutter 23 is longer than the difference between the outer diameter and the inner diameter of the outer circle and the annular step of the cylindrical workpiece. That is, the length of the deburring cutter 23 is greater than the thickness of the outer circle and the annular step. This ensures that when the deburring cutter 23 removes burrs from the cylindrical workpiece, there will be no areas on the end faces of the outer circle and the annular step that the deburring cutter 23 cannot reach. Both sides of the deburring cutter 23 can process the end faces of the outer circle and the annular step of the cylindrical workpiece. When removing burrs from the cylindrical workpiece, it is not necessary to reverse the direction of either the cylindrical workpiece or the deburring cutter 23. The deburring work on the end faces of the outer circle and the annular step of the cylindrical workpiece can be achieved simply by moving the position of the deburring cutter 23. The deburring cutter 23 can be moved between the outer circle and the annular step, and the deburring work on the two opposing sides of the outer circle and the annular step can be performed with only a small distance movement.

[0033] The length of the deburring cutter 23 is generally greater than that of the boring cutter. This is because the boring cutter is used to machine cylindrical workpieces. When the boring cutter cuts the cylindrical workpiece, its cutting depth will not exceed the thickness of the cylindrical workpiece. Furthermore, since the force experienced by the boring cutter during cutting is much greater than the force experienced by the deburring cutter 23 when deburring the cylindrical part, the longer boring cutter is more prone to breakage, which greatly reduces the processing efficiency.

[0034] A second boring tool 24 is fixedly provided on the side of the middle section of the inner insertion rod 21. The second boring tool 24 and the first boring tool 22 are located on the same side of the inner insertion rod 21, and the cutting ends of the second boring tool 24 and the first boring tool 22 can simultaneously contact the inner wall of the cylindrical workpiece. When the first boring tool 22 is machining the cylindrical workpiece, the second boring tool 24 can simultaneously machine the inner wall of the cylindrical workpiece. At the same time, when the inner insertion rod 21 moves closer to the inner wall of the cylindrical workpiece, the first boring tool 22 and the second boring tool 24 can simultaneously increase their cutting depth on the cylindrical workpiece. Through the synchronous machining of the first boring tool 22 and the second boring tool 24, the machining efficiency can be greatly improved. The first boring tool 22 and the second boring tool 24 can contact the cylindrical workpiece first to meet different machining depth requirements. Users can design the first boring tool 22 and the second boring tool 24 differently according to their needs, so that the first boring tool 22 and the second boring tool 24 can cut holes of different depths, shapes and sizes.

[0035] In other embodiments, the number of second boring tools 24 can be increased, thereby enabling the boring of the inner part of the cylindrical workpiece to be completed in one go. By setting boring tools with different design requirements on the same side of the insertion rod 21 inside the cylinder, the boring process can be performed simultaneously, which is convenient and efficient.

[0036] A coolant pipe can be installed inside the insert rod 21 inside the cylinder. Several coolant nozzles are provided on the side of the boring cutter, with the coolant nozzles facing the cutting position of the boring cutter. At the same time, the coolant pipe is connected to each coolant nozzle. In a general embodiment, since the cutting position of the first boring cutter 22 is close to the end of the cylindrical workpiece, only one coolant nozzle is provided on the side of the first boring cutter 22. The second boring cutter 24 is located in the middle section of the insert rod 21 inside the coolant cylinder. The boring size or depth that it needs to process is relatively large, so three cooling nozzles are required for synchronous cooling.

[0037] An end-face cutter 31 is fixedly mounted on the tool holder 2. The end-face cutter 31 is perpendicular to the inner insertion rod 21. The end-face cutter 31 is used to machine the end faces of both ends of the cylindrical workpiece and the outer circles located at both ends of the cylindrical workpiece. The end-face cutter 31 is set perpendicular to the inner insertion rod 21 and is fixedly mounted on the tool holder 2. The mounting surface of the end-face cutter 31 is perpendicular to the mounting surface of the inner insertion rod 21. The cutting tool of the end-face cutter 31 is located at the end of the end-face cutter 31. When the cutting tool of the end-face cutter 31 is machining the cylindrical workpiece, the inner insertion rod 21 and the cutting tool mounted on it do not contact the cylindrical workpiece. When the end-face cutter 31 is machining, only the cutting tool of the end-face cutter 31 is in contact with the cylindrical workpiece.

[0038] In other embodiments, the end face cutter 31 can be provided with a separate end face cutter holder 32, which is also fixed on the cutter fixing rail 11. The end face cutter holder 32 is also provided with locking protrusions similar to those on the mounting cutter holder 2.

[0039] After the tool holder 2 and the end face tool holder 32 are inserted into the groove 111 of the tool fixing rail 11, they are then fixed on the tool fixing rail 11 by bolts or screws. The positions of the tool holder 2 and the end face tool holder 32 can be adjusted. After adjusting the tool holder 2 and the end face tool holder 32 to the appropriate positions, they are fixed to accommodate the processing of cylindrical workpieces of different sizes.

[0040] The tool fixing rail 11 can be fixedly mounted on the machine tool turret 4. The machine tool turret 4 controls the movement of the tool fixing rail 11, thereby controlling the position of the tool on the tool holder mounted on it. In other embodiments, the positions of the tool holder 2 and the end face tool holder 32 on the tool fixing rail 11 can also be controlled by the machine tool turret 4, which facilitates the automatic adjustment of the position of each tool holder by the machine tool.

[0041] The machine tool turret 4 is located inside the machine tool and can move automatically inside the machine tool. The machine tool is equipped with a machine tool spindle 5, which is used to drive the cylindrical workpiece to rotate. The rotation of the cylindrical workpiece cooperates with the cutting tool on the machine tool turret 4 to complete the cutting of the cylindrical workpiece.

[0042] The machine tool spindle 5 is equipped with a part fixture, preferably a three-jaw chuck. The machine tool is also equipped with a center rest. The part fixture and the center rest are used to fix the two ends of the cylindrical workpiece, respectively. The center rest can stably hold the workpiece without affecting its rotation, thereby improving the stability of the tool processing.

[0043] A grinding wheel can also be installed on the machine tool turret 4. The grinding wheel is mounted on the grinding frame, which is also fixed on the machine tool turret 4. The grinding frame is offset from the tool holder 2 on the tool fixing rail 11. The grinding wheel is positioned to correspond to the end opening of the cylindrical workpiece. Thus, when the machine tool turret 4 moves, or when the grinding tool holder is equipped with a hydraulic telescopic rod that drives the grinding wheel to move, the grinding wheel can contact the end of the cylindrical workpiece. This allows the cylindrical workpiece to be rounded or chamfered at the end under the rotation of the cylindrical workpiece, making the opening of the cylindrical workpiece smoother.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A turning tool structure for cylindrical workpieces, characterized in that, The device includes a tool fixing rail, on which a tool holder is fixedly mounted. A cylindrical insertion rod is fixedly mounted on the side of the tool holder facing the machine tool spindle. A burr cutter and a first boring cutter are fixedly mounted on the end of the cylindrical insertion rod facing the machine tool spindle. The burr cutter and the first boring cutter are arranged opposite to each other. A second boring cutter is fixedly mounted on the side of the cylindrical insertion rod. The second boring cutter and the first boring cutter are located on the same side of the cylindrical insertion rod.

2. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The lengths at both ends of the first boring tool and the burr tool are less than the inner diameter of the cylindrical workpiece.

3. The cylindrical workpiece turning tool structure according to claim 2, characterized in that, The first boring tool and the second boring tool can simultaneously contact the inner wall of the cylindrical workpiece.

4. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The first boring tool and the second boring tool are provided with several coolant nozzles on their sides.

5. The cylindrical workpiece turning tool structure according to claim 4, characterized in that, The cylinder insert rod is equipped with a coolant pipe, which is connected to the coolant nozzle.

6. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The tool fixing track is provided with several grooves, and the tool mounting holder is provided with locking protrusions that cooperate with the grooves.

7. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The mounting tool holder is also fixedly equipped with an end face knife, which is perpendicular to the insertion rod inside the cylinder.

8. The cylindrical workpiece turning tool structure according to claim 7, characterized in that, The end face cutter is fixedly mounted on the end face cutter holder located on the side of the mounting cutter holder.

9. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The length of the burr cutter is equal to the outer diameter of the cylindrical workpiece and the thickness of the step.

10. The cylindrical workpiece turning tool structure according to claim 1, characterized in that, The tool fixing rail is fixedly installed on the machine tool turret.