Cylindrical turning tool on numerical control bed
By designing an external turning tool with a replaceable tool holder and an increased depth of cutter and width of insert, the problem of existing tools being unable to replace inserts has been solved, achieving wider applicability and high-efficiency cutting.
Patent Information
- Application Number
- CN202520369594.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing external turning tools have a tool holder and tool base that are integrated, making it impossible to replace different types of inserts. This limits their applicability and reduces their cutting efficiency.
A replaceable tool holder structure was designed, allowing for the replacement of the insert type. Deep grooves and wide inserts were added to suit different cutting needs.
It improves the applicability and cutting efficiency of external turning tools, and enhances machining accuracy and stability.
Smart Images
Figure CN223902943U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical processing technical field especially is a kind of external turning tool on numerical control bed. BACKGROUND
[0002] External turning tool as important cutting tool in the field of mechanical processing, mainly used for processing the outer contour of cylindrical parts. This tool is widely used in numerical control bed and other mechanical equipment, through the coordinated action of spindle rotation and tool cutting, realize the accurate machining of workpiece. It is suitable for machining the external circle of large diameter parts, and can cope with steel, cast iron, non-ferrous metals and plastics and other materials. When using external turning tool, the tool should be selected reasonably according to the factors such as workpiece material and hardness, and attention should be paid to keep good contact between tool and workpiece to ensure sufficient cutting depth.
[0003] In external turning process, the performance of tool has a direct impact on processing efficiency, workpiece quality and production cost. The existing external turning tool shank and tool holder are integrated, and the tool holder corresponds to fixed blade model, so different models of blades cannot be replaced, and the scope of application is not extensive. The existing external turning tool does not have widened blades, and the cutting efficiency is low, time-consuming and laborious. SUMMARY
[0004] The utility model aims at providing an external turning tool on numerical control bed, the tool holder is set as replaceable structure, and the corresponding blade model can also be replaced, which effectively increases the scope of application of the external turning tool, and adds widened blades, which are suitable for simple cutting work and improve the cutting efficiency.
[0005] To achieve the above object, the utility model provides the following scheme:
[0006] An external turning tool on numerical control bed, comprising a tool shank, a tool holder and a blade, wherein the tool shank top end is fixed with the tool holder, the tool holder is threadedly connected at the top of the tool shank, the tool holder top is provided with a tool groove, the tool groove is provided with two, respectively arranged on both sides of the tool holder, the blade is embedded in the tool groove, the blade is bolted on the tool holder, the tool holder comprises a seat body, a connecting part, a tool groove and a clamp, the connecting part is arranged at the bottom end of the seat body, the depths of the tool grooves on both sides of the tool holder are different, the thicknesses of the blades embedded in the two tool grooves are different, the clamps are bolted on both sides of the seat body, the outer side of the blade is fixed at the distal end of the clamp, and the blade is positioned in the tool groove through the clamp.
[0007] Further, the tool shank comprises a shank body, a threaded head and a screw hole, the shank body is in the shape of a square rod, the threaded head is welded on the top surface of the shank body, the screw hole is arranged below the threaded head, and the screw hole is provided with three, which are arrayed on the top of the shank body.
[0008] Further, the connecting part comprises a threaded groove, an extension block and hex bolts, the threaded groove is arranged at the bottom end of the seat body, the threaded head is threadedly connected in the threaded groove, the seat body is threadedly connected at the top end of the rod body through the threaded groove, the extension block is arranged at the bottom of the seat body, the hex bolts are arranged on the extension block, the hex bolts are threadedly connected in the screw holes through the extension block, and the extension block is threadedly connected at the two sides of the top end of the rod body through the hex bolts.
[0009] Further, the knife groove comprises a shallow groove, a deep groove, a positioning hole and a tool withdrawal hole, the shallow groove is arranged on the right side of the seat body, the deep groove is arranged on the left side of the seat body, the positioning hole is arranged at the center of the knife groove, the tool withdrawal hole is arranged at the bottom end of the knife groove, the tool withdrawal hole is circular, and the tool is taken out through the tool withdrawal hole.
[0010] Further, the tool blade comprises a narrow tool, a wide tool, a tool thread and a fastening bolt, the narrow tool is embedded in the shallow groove, the wide tool is embedded in the deep groove, the tool thread is arranged on the outer side of the tool blade, the fastening bolt is bolted in the positioning hole through the center of the tool blade, and the tool blade is fixed in the knife groove through the fastening bolt.
[0011] To sum up, the beneficial technical effects of the utility model are as follows:
[0012] 1. The connecting part is adopted, the tool holder is threadedly connected on the tool bar through the connecting part, the tool holder can be disassembled and replaced, the corresponding tool blade model can also be replaced, the turning tool can replace different models of tool blades according to needs to carry out cutting work, and the application range of the external circle turning tool is improved.
[0013] 2. The deep groove and the wide tool blade are added, when simple cutting structure is prepared, the wide tool blade can be used, and the cutting efficiency is improved. DRAWINGS
[0014] Figure 1 It is the whole structure schematic view of the utility model;
[0015] Figure 2 It is the connecting part structure schematic view of the utility model;
[0016] Figure 3 It is the knife groove and tool blade structure schematic view of the utility model.
[0017] 1. Tool bar; 2. Tool holder; 3. Tool blade; 11. Rod body; 12. Threaded head; 13. Screw hole; 21. Seat body; 22. Connecting part; 23. Knife groove; 24. Clamping; 31. Narrow tool; 32. Wide tool; 33. Tool thread; 34. Fastening bolt; 221. Threaded groove; 222. Extension block; 223. Hex bolt; 231. Shallow groove; 232. Deep groove; 233. Positioning hole; 234. Tool withdrawal hole. PREFERRED EMBODIMENT
[0018] The present invention will be further described in detail below with reference to the accompanying drawings.
[0019] This utility model discloses an external turning tool for a CNC machine tool, comprising a tool holder 1, a tool base 2, and an insert 3. The tool holder 1 is the main body supporting the entire tool. The tool base 2 is fixed to the top of the tool holder 1 and is threaded to the top of the tool holder 1. The insert 3 is fixed by the tool base 2 to ensure a stable position and angle during cutting. The top of the tool base 2 is provided with a tool groove 23. There are two tool grooves 23, which are respectively provided on both sides of the tool base 2. The insert 3 is embedded in the tool groove 23 and is bolted to the tool base 2. The tool base 2 includes a seat body 21, a connecting part 22, tool grooves 23, and a clamping 24. The connecting part 22 is provided at the bottom end of the seat body 21. The tool holder 1 and the tool base... 2. The tool holder 2 is connected and disassembled via the connecting part 22, facilitating its replacement. The type of insert 3 is changed simultaneously with the tool holder 2. Therefore, the turning tool can be modified by changing the type of tool holder 2 and insert 3 according to different cutting requirements. The depths of the tool grooves 23 on both sides of the tool holder 2 are different, and the thickness of the insert 3 embedded in the two tool grooves 23 is different. The insert 3 is selected according to the complexity of the cutting, which helps improve cutting efficiency. Clamping devices 24 are bolted to both sides of the base 21. The distal end of the clamping device 24 fixes the outer side of the insert 3. The insert 3 is limited within the tool groove 23 by the clamping device 24. The clamping device 24 ensures the stability of the position and orientation between the insert and the workpiece, reducing cutting vibration and improving machining accuracy and surface quality. See details... Figure 1 .
[0020] The tool holder 1 includes a rod body 11, a threaded head 12, and a threaded hole 13. The rod body 11 is in the shape of a "square rod". The threaded head 12 is welded to the top surface of the rod body 11. The threaded hole 13 is located below the threaded head 12. There are three threaded holes 13, which are arranged in an array on the top of the rod body 11. The connecting part 22 includes a threaded groove 221, an extension block 222, and hexagonal bolts 223. The threaded groove 221 is located at the bottom end of the base 21, and the threaded head 12 is threaded into the threaded groove 221. The base 21 is threaded to the top end of the rod 11 through the threaded groove 221. The extension blocks 222 are located at both ends of the bottom of the base 21 and are secured to the top end of the rod 11. The hexagonal bolts 223 are arrayed on the extension blocks 222 and are threaded through the extension blocks 222 into the threaded holes 13. The extension blocks 222 are threaded to both sides of the top end of the rod 11 through the hexagonal bolts 223. The hexagonal bolts 223 further fix the tool holder 2 to the tool holder 1. The hexagonal bolts 223 facilitate installation and removal, allowing the tool holder 2 to be installed and removed from the tool holder 1 as needed. This enables the turning tool to be replaced with the tool holder 2 and different types of inserts 3 for cutting operations, thus improving the applicability of this turning tool. See details below. Figure 2 .
[0021] The knife groove 23 includes a shallow groove 231, a deep groove 232, a positioning hole 233 and a tool withdrawal hole 234, the shallow groove 231 is arranged on the right side of the seat body 21, the deep groove 232 is arranged on the left side of the seat body 21, the positioning hole 233 is arranged at the center of the knife groove 23, the blade 3 can be firmly installed on the tool seat 2, and the loosening or displacement of the blade 3 during machining is prevented, so that the machining precision and stability are ensured, the tool withdrawal hole 234 is arranged at the bottom end of the knife groove 23, the tool withdrawal hole 234 is circular, and the tool withdrawal hole 234 ensures that the tool can be smoothly withdrawn after cutting is completed. The blade 3 includes a narrow blade 31, a wide blade 32, a blade pattern 33 and a fastening bolt 34, the narrow blade 31 is embedded in the shallow groove 231, the narrow blade 31 is used for fine structure cutting work, the wide blade 32 is embedded in the deep groove 232, the wide blade 32 is used for simple structure rapid cutting, and the cutting efficiency is improved, the blade pattern 33 is arranged on the outer side of the blade 3, the fastening bolt 34 is bolted in the positioning hole 233 through the center of the blade 3, the blade 3 is fixed in the knife groove 23 through the fastening bolt 34, and the stability during cutting is ensured, and specific reference can be made to Figure 3 .
[0022] Embodiments
[0023] Operation flow
[0024] 1, the tool seat 2 is threadedly connected to the tool bar 1, then the hexagonal bolt 223 is tightened on both sides of the tool seat 2, and the tool seat 2 and the tool bar 1 are further fixed;
[0025] 2, according to the structure of the workpiece, the wide blade 32 or the narrow blade 31 is selected, the selected blade 3 is embedded in the corresponding knife groove 23, and then the blade 3 is fixed by using the fastening bolt 34 and the clamping 24;
[0026] 3, if the type of the blade 3 needs to be changed, the tool seat 2 can be disassembled and replaced.
[0027] The embodiments of the specific embodiments are the preferred embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A turning tool for external diameter on a CNC machine tool, comprising a tool holder (1), a tool support (2), and a cutting insert (3), characterized in that: The top of the tool holder (1) is fixed with a tool holder (2), which is threaded to the top of the tool holder (1). The top of the tool holder (2) is provided with a tool groove (23). There are two tool grooves (23), which are respectively provided on both sides of the tool holder (2). The blade (3) is embedded in the tool groove (23). The blade (3) is bolted to the tool holder (2). The tool holder (2) includes a base (21), a connecting part (22), a tool groove (23), and a clamp (24). The connecting part (22) is provided at the bottom of the base (21). The depths of the tool grooves (23) on both sides of the tool holder (2) are different. The thicknesses of the blades (3) embedded in the two tool grooves (23) are different. The clamps (24) are bolted to both sides of the base (21). The far end of the clamp (24) is fixed to the outside of the blade (3). The blade (3) is limited in the tool groove (23) by the clamp (24).
2. The external turning tool on a CNC machine according to claim 1, characterized in that: The tool holder (1) includes a rod body (11), a threaded head (12), and a threaded hole (13). The rod body (11) is in the shape of a "square rod". The threaded head (12) is welded to the top surface of the rod body (11). The threaded hole (13) is located below the threaded head (12). There are three threaded holes (13), which are arranged in an array on the top of the rod body (11).
3. The external turning tool on a CNC machine according to claim 2, characterized in that: The connecting part (22) includes a threaded groove (221), an extension block (222), and hexagonal bolts (223). The threaded groove (221) is located at the bottom end of the base (21), and the threaded head (12) is threaded into the threaded groove (221). The base (21) is threaded into the top end of the rod (11) via the threaded groove (221). The extension block (222) is located at both ends of the bottom of the base (21). The hexagonal bolts (223) are arrayed on the extension block (222). The hexagonal bolts (223) pass through the extension block (222) and are threaded into the screw hole (13). The extension block (222) is threaded into both sides of the top end of the rod (11) via the hexagonal bolts (223).
4. The external turning tool on a CNC machine according to claim 1, characterized in that: The cutting groove (23) includes a shallow groove (231), a deep groove (232), a positioning hole (233), and a retraction hole (234). The shallow groove (231) is located on the right side of the base (21), and the deep groove (232) is located on the left side of the base (21). The positioning hole (233) is located at the center of the cutting groove (23), and the retraction hole (234) is located at the bottom of the cutting groove (23). The retraction hole (234) is circular, and the blade (3) is removed through the retraction hole (234).
5. The external turning tool on a CNC machine according to claim 4, characterized in that: The blade (3) includes a narrow blade (31), a wide blade (32), a cutting edge (33), and a fastening bolt (34). The narrow blade (31) is embedded in the shallow groove (231), and the wide blade (32) is embedded in the deep groove (232). The cutting edge (33) is set on the outside of the blade (3). The fastening bolt (34) passes through the center of the blade (3) and is bolted into the positioning hole (233). The blade (3) is fixed in the cutting groove (23) by the fastening bolt (34).