A hard turning tool holder for a ball screw race

Abstract

The utility model relates to the technical field of tool holder, and disclose a screw rod raceway hard turning tool holder, including tool holder, tool head and cutting edge, the lateral wall of tool head is fixedly connected with the plug -in block, the inner wall of tool holder is opened with the slot, the inner wall of slot is inserted and is connected with the plug -in block, the inner wall of tool head is opened with the installation groove, the inner wall of installation groove is installed with cutting edge, the inner wall of plug -in block is opened with the recess, and the inner wall of recess is equipped with the clamping mechanism of plug -in block. The utility model provides the fixed rod in the recess in the inner wall of plug -in block is fixed in the recess inner wall, the clamping plate and the torsional spring cover are arranged on the fixed rod wall, the torsional spring has the pre -tightening force under the natural state, promotes the clamping plate to rotate around the fixed rod, makes the clamping plate clamping in the clamping groove of tool holder slot inner wall, forms rigid locking, firmly fixes tool head with tool holder, prevents the tool head from falling off or loosening due to the excessive cutting force when hard turning, guarantees the processing safety and precision.

Description

Technical Field

[0001] This utility model relates to the field of tool holder technology, and in particular to a tool holder for hard turning of lead screw raceways. Background Technology

[0002] Hard turning tool holders are key components used in hard turning processes. They connect the machine tool spindle to the cutting tool and have a significant impact on machining accuracy, efficiency, and tool life. Hard turning typically requires the machine to withstand large cutting forces, so the tool holder needs to have high rigidity to ensure that it does not deform during machining and thus ensure machining accuracy.

[0003] In the existing technology, during the machining and use of tool holders, the cutting area of ​​the tool holder will continuously wear, requiring regular replacement and maintenance of the tool tip. However, the tool holder is installed as an integral part of the machine tool, which is laborious to disassemble and assemble, and will affect the efficiency of subsequent maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in the prior art, during the machining and use of tool holders, the cutting area of ​​the tool holder will continuously wear, requiring regular replacement and maintenance of the tool tip. The tool holder is installed as an integral part on the machine tool, which is laborious to disassemble and assemble, and affects the efficiency of subsequent maintenance. Therefore, a tool holder for hard turning of lead screw raceways is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A tool holder for hard turning of lead screw raceways includes a tool holder, a tool head, and a cutting edge. A plug is fixedly connected to the side wall of the tool head. A slot is formed in the inner wall of the tool holder. The plug is inserted into the inner wall of the slot. A mounting groove is formed in the inner wall of the tool head. The cutting edge is mounted in the inner wall of the mounting groove. A groove is formed in the inner wall of the plug. A clamping mechanism is provided on the inner wall of the plug located in the groove.

[0006] Preferably, the end of the tool holder opposite to the tool head is fixedly connected to a mounting shank, and the mounting shank has a threaded groove on its side wall.

[0007] Preferably, the clamping mechanism includes a fixed rod, a clamping plate, and a torsion spring. The fixed rod is fixedly connected to the inner wall of the groove. The clamping plate and the torsion spring are respectively sleeved on the rod wall of the fixed rod. One end of the torsion spring is fixedly connected to the inner wall of the clamping plate, and the other end of the torsion spring is fixedly connected to the inner wall of the insert block. The knife handle is provided with a slot on the inner wall of the slot, and the clamping plate is clamped inside the slot.

[0008] Preferably, the side wall of the handle has an opening, the inner wall of the handle has a groove, the handle has a top plate that slides on the inner wall of the groove, and the top plate has a handle fixedly connected to the side wall of the opening.

[0009] Preferably, the connection between the top plate and the tool holder is also threaded with mounting bolts.

[0010] Preferably, a rubber pad is fixedly connected to the side wall of the card plate, and the rubber pad is pressed against the inner wall of the card slot.

[0011] Compared with the prior art, this utility model provides a tool holder for hard turning of lead screw raceways, which has the following beneficial effects: 1. This lead screw raceway hard turning tool holder is fixed to the inner wall of the groove by a fixing rod in the groove of the insert block. The clamping plate and torsion spring are sleeved on the wall of the fixing rod. The torsion spring has a preload in its natural state, which pushes the clamping plate to rotate around the fixing rod, so that the clamping plate is clamped in the groove of the tool holder slot, forming a rigid lock, which firmly fixes the tool head to the tool holder, preventing the tool head from falling off or loosening due to excessive cutting force during hard turning, and ensuring machining safety and accuracy.

[0012] 2. The tool holder for hard turning the lead screw raceway is pressed against the inner wall of the slot by a rubber pad fixed to the side wall of the chuck plate. This increases the friction between the chuck plate and the slot, further enhancing the locking reliability. At the same time, it avoids wear caused by hard contact between the chuck plate and the slot, extending the service life of the component.

[0013] 3. For the hard turning tool holder of this lead screw raceway, first unscrew the mounting bolts at the connection between the top plate and the tool holder, push the handle to drive the top plate to slide along the groove on the inner wall of the tool holder. The top plate presses against the clamping plate, causing the clamping plate to rotate around the fixed rod and compress the torsion spring until the clamping plate disengages from the groove. Then the insert of the tool head can be pulled out from the slot of the tool holder to complete the tool head disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a tool holder for hard turning of lead screw raceways proposed in this utility model; Figure 2 This is a partial structural cross-sectional view of a tool holder for hard turning of lead screw raceways proposed in this utility model; Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle section.

[0015] In the diagram: 1. Tool holder, 2. Tool head, 3. Cutting edge, 4. Mounting insert, 5. Insert block, 6. Fixing rod, 7. Clamping plate, 8. Torsion spring, 9. Top plate, 10. Handle, 11. Mounting bolt, 12. Rubber pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-3 A tool holder for hard turning of lead screw raceways includes a tool holder 1, a tool head 2, and a cutting edge 3. A plug block 5 is fixedly connected to the side wall of the tool head 2. A slot is provided on the inner wall of the tool holder 1. The plug block 5 is inserted into the inner wall of the slot. An installation groove is provided on the inner wall of the tool head 2. The cutting edge 3 is installed on the inner wall of the installation groove. A groove is provided on the inner wall of the plug block 5.

[0018] The end of the handle 1 facing away from the cutter head 2 is fixedly connected to a mounting shank 4, and the side wall of the mounting shank 4 is provided with a threaded groove.

[0019] The insert 5 is provided with a clamping mechanism on the inner wall of the groove. The clamping mechanism includes a fixing rod 6, a clamping plate 7 and a torsion spring 8. The fixing rod 6 is fixedly connected to the inner wall of the groove. The clamping plate 7 and the torsion spring 8 are respectively sleeved on the rod wall of the fixing rod 6. One end of the torsion spring 8 is fixedly connected to the inner wall of the clamping plate 7 and the other end of the torsion spring 8 is fixedly connected to the inner wall of the insert 5. The knife handle 1 is provided with a slot on the inner wall of the slot. The clamping plate 7 is clamped inside the slot.

[0020] The tool holder 1 is the core component connecting the tool and the machine tool. The mounting shank 4, which is fixed to the end opposite to the tool head 2, has a threaded groove on its side wall. It can be fixed to the machine tool spindle by threaded connection or clamping method to ensure that the tool holder 1 rotates synchronously with the machine tool during the machining process without relative displacement, thus providing stable power transmission for cutting. The slot on the inner wall of the tool holder 1 cooperates with the insert block 5 fixed to the side wall of the tool head 2 to achieve the initial positioning connection between the tool head 2 and the tool holder 1. After the insert block 5 is inserted into the slot, the position of the tool head 2 is limited to avoid the tool head offset during machining, which would cause cutting deviation.

[0021] The fixing rod 6 in the groove of the inner wall of the insert 5 is fixed to the inner wall of the groove. The clamping plate 7 and the torsion spring 8 are sleeved on the wall of the fixing rod 6. The torsion spring 8 has a preload in its natural state, which pushes the clamping plate 7 to rotate around the fixing rod 6, so that the clamping plate 7 is clamped in the groove of the inner wall of the tool holder 1, forming a rigid lock, which firmly fixes the tool head 2 to the tool holder 1, preventing the tool head 2 from falling off or loosening due to excessive cutting force during hard turning, and ensuring machining safety and accuracy. The rubber pad 12 fixed on the side wall of the clamping plate 7 is pressed against the inner wall of the groove, which can increase the friction between the clamping plate 7 and the groove, further enhancing the locking reliability, while avoiding wear caused by hard contact between the clamping plate 7 and the groove, and extending the service life of the component.

[0022] The mounting groove on the inner wall of the cutter head 2 is used to fix the cutting edge 3. The cutting edge 3 is made of a special tool material for hard turning, which can withstand the high hardness cutting requirements of the hardened lead screw raceway. During machining, the cutting edge 3 rotates with the tool holder 1 and the cutter head 2 to turn the lead screw raceway and form a precise spiral groove structure.

[0023] To complete the removal of the cutter head, such as Figure 1-3As shown, an opening is provided on the side wall of the handle 1, and a sliding groove is provided on the inner wall of the handle 1. A top plate 9 is slidably provided on the inner wall of the sliding groove. A handle 10 is fixedly connected to the side wall of the opening on the top plate 9. A mounting bolt 11 is threadedly connected to the connection between the top plate 9 and the handle 1. A rubber pad 12 is fixedly connected to the side wall of the clamping plate 7. The rubber pad 12 is pressed tightly against the inner wall of the clamping groove.

[0024] When it is necessary to replace the tool head 2 or the cutting edge 3, the tool head 2 can be unlocked by connecting the top plate 9 on the side wall of the tool holder 1 with the handle 10: First, unscrew the mounting bolt 11 at the connection between the top plate 9 and the tool holder 1, push the handle 10 to make the top plate 9 slide along the groove on the inner wall of the tool holder 1, the top plate 9 presses the retaining plate 7, causing the retaining plate to rotate around the fixing rod 6 and compress the torsion spring 8 until the retaining plate 7 disengages from the slot, and the insert block 5 of the tool head 2 can be pulled out from the slot of the tool holder 1 to complete the tool head disassembly; after replacing the new tool head or cutting edge, insert the insert block 5 back into the slot, the retaining plate 7 will automatically lock into the slot under the action of the torsion spring 8, and then tighten the mounting bolt 11 to fix the top plate 9 to prevent the top plate from sliding and causing the retaining plate to unlock when not in operation, and to ensure that the tool head is fixed and stable during processing.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tool holder for hard turning of lead screw raceways, comprising a tool holder (1), a tool head (2), and a cutting edge (3), characterized in that: A plug (5) is fixedly connected to the side wall of the cutter head (2). A slot is provided on the inner wall of the handle (1). The plug (5) is inserted into the inner wall of the slot. An installation groove is provided on the inner wall of the cutter head (2). The cutting edge (3) is installed on the inner wall of the installation groove. A groove is provided on the inner wall of the plug (5). A clamping mechanism is provided on the inner wall of the plug (5) located in the groove.

2. The tool holder for hard turning lead screw raceways according to claim 1, characterized in that: The end of the handle (1) facing away from the blade head (2) is fixedly connected to an installation shank (4), and the side wall of the installation shank (4) is provided with a threaded groove.

3. The tool holder for hard turning lead screw raceways according to claim 1, characterized in that: The clamping mechanism includes a fixed rod (6), a clamping plate (7), and a torsion spring (8). The fixed rod (6) is fixedly connected to the inner wall of the groove. The clamping plate (7) and the torsion spring (8) are respectively sleeved on the rod wall of the fixed rod (6). One end of the torsion spring (8) is fixedly connected to the inner wall of the clamping plate (7), and the other end of the torsion spring (8) is fixedly connected to the inner wall of the insert block (5). The knife handle (1) is provided with a slot on the inner wall of the slot, and the clamping plate (7) is clamped inside the slot.

4. The tool holder for hard turning lead screw raceways according to claim 1, characterized in that: An opening is provided on the side wall of the handle (1), a sliding groove is provided on the inner wall of the handle (1), a top plate (9) is slidably provided on the inner wall of the sliding groove, and a handle (10) is fixedly connected to the side wall of the opening on the top plate (9).

5. A tool holder for hard turning lead screw raceways according to claim 4, characterized in that: The connection between the top plate (9) and the handle (1) is also threaded with a mounting bolt (11).

6. The tool holder for hard turning lead screw raceways according to claim 3, characterized in that: A rubber pad (12) is fixedly connected to the side wall of the card plate (7), and the rubber pad (12) is pressed against the inner wall of the card slot.

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