Two-in-one boring cutter grain
By designing two-in-one boring particles and using a cutting head with an inclined surface structure, the workpiece internal hole expansion and opening surface are simultaneously processed, solving the problems of low efficiency and high cost in the existing technology, and improving processing efficiency and economy.
Patent Information
- Application Number
- CN202422396866.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
When existing boring particles ream and open-face finishing the inner holes of the workpiece, boring particles and surface finishing particles need to be used separately, resulting in low processing efficiency and high cost.
A two-in-one boring tool is designed, and a tool head with an inclined surface structure is used to realize the reaming of the inner hole wall through the first inclined surface and the second inclined surface, and the sweeping surface processing of the opening end surface is achieved through the third inclined surface and the fourth inclined surface, and processing is performed in conjunction with the rotation of the workpiece, reducing the tool change and installation adjustment time.
It improves the processing efficiency of workpieces and reduces processing costs. It is especially suitable for the processing of small-bore workpieces, saves the material needs of the cutting part and improves the economicality of processing.
Smart Images
Figure CN223129385U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of machining tools, and more specifically, it relates to a two-in-one boring tool insert. Background Art
[0002] A boring tool insert is a cutting tool used for boring machining, mainly for enlarging holes, trimming hole diameters, and improving the surface quality of holes. In related technologies, a boring tool insert can usually only machine the inner hole of a workpiece, with a relatively single function. For workpieces that require reaming the inner hole and dressing the opening surface, a boring tool insert and a dressing tool insert need to be used for separate machining. Using two tool inserts has a relatively high processing cost, and the installation of the tool inserts and the alignment and debugging with the workpiece both require time. Using two tool inserts results in a relatively low machining efficiency of the workpiece. Summary of the Utility Model
[0003] In order to solve the problem of relatively low efficiency in separately reaming the inner hole of a workpiece and dressing the opening surface of the workpiece using two tool inserts in related technologies, this application provides a two-in-one boring tool insert.
[0004] A two-in-one boring tool insert includes a substrate, a cutting head is formed on the substrate. A first inclined surface inclined towards the substrate is provided at the top of the cutting head. A second inclined surface inclined towards the opposite side is provided on one side of the cutting head. The first inclined surface intersects with the second inclined surface and a tip arc is formed at a corner end of the intersection. A rake face with a tip arc is formed on one side of the cutting head between the first inclined surface and the second inclined surface. A third inclined surface is further provided at the top of the cutting head. The third inclined surface extends from the rake face as the starting side towards the opposite side of the cutting head and gradually inclines towards the substrate. A fourth inclined surface is also provided at the top of the cutting head. The fourth inclined surface extends from a side edge of the first inclined surface away from the rake face to the edge of the cutting head and gradually inclines towards the substrate.
[0005] Preferably, a chip groove is recessed in the rake face of the cutting head. The side wall surface of the chip groove extends from the side of the rake face away from the substrate towards the substrate and gradually inclines towards the side of the cutting head away from the rake face. And the bottom surface of the chip groove is an arc surface and is tangent to its side wall surface.
[0006] Preferably, the number of the cutting heads is two, and the two cutting heads are respectively formed at both ends of the substrate.
[0007] Preferably, the base body is arranged in a parallelogram, and a set of opposite angles are acute angles, and chamfers are made at the two acute ends to form a flat surface. The two cutting heads are respectively formed on the flat surfaces formed at the two acute ends of the base body. The opposite two side surfaces in the thickness direction of the base body are respectively the front surface and the back surface. The rake face of the tip arc is flush with the front surface of the base body. Avoidance grooves are recessed on one side surface of the two acute ends of the base body. The side wall surface of the avoidance groove is inclined and tangent to the second inclined surface of the cutting head and is flush. The side surface of the cutting head opposite to the second inclined surface is tangent to and flush with the other side surface of the acute end of the base body away from the avoidance groove.
[0008] Preferably, the thickness of the cutting head is less than the thickness of the base body.
[0009] Preferably, bolt holes penetrating the base body itself are provided on the front surface of the base body.
[0010] The beneficial technical effects of the present application are as follows: The tip arc is the cutting part. The first inclined surface and the second inclined surface are used to avoid the inner hole wall so that the tip arc contacts the inner hole wall of the workpiece for reaming. The third inclined surface and the fourth inclined surface are used to avoid the opening end face of the workpiece so that the tip arc contacts the opening end face of the workpiece for facing machining. A single cutting insert is used to ream the workpiece and face the opening surface, saving the time for tool change and installation adjustment, with relatively high machining efficiency for the workpiece. And compared with the traditional boring tool that reams the inner hole by its own rotation and needs to set a larger cutting part to maintain rigidity under the same material, when machining a smaller-diameter inner hole, a material with higher strength and rigidity is required to make a smaller cutting part, resulting in higher costs. By using the tip arc and avoiding through the inclined surface, the cutting part is smaller, and the machining is realized by the rotation of the workpiece, which is beneficial to adapting to the machining of small-diameter workpieces with a taper hole diameter below 2.00 mm, and has relatively high economy. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a front view of a two-in-one boring insert according to this embodiment.
[0012] Figure 2 It is a side view of a two-in-one boring insert according to this embodiment.
[0013] Reference numerals: 1. Base body; 11. Avoidance groove; 12. Bolt hole; 2. Cutting head; 21. First inclined surface; 22. Second inclined surface; 23. Tip arc; 24. Rake face; 25. Third inclined surface; 26. Fourth inclined surface; 27. Chip groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.
[0015] Referring to Figure 1 and Figure 2 , a two-in-one boring tool insert includes a base body 1. The base body 1 is arranged in a parallelogram shape, and a set of opposite angles are acute angles, and chamfers are made at the two acute ends to form a flat surface. Tool heads 2 are formed on the flat surfaces at the two acute ends of the base body 1. A first inclined surface 21 inclined towards the base body 1 is provided at the top of each tool head 2. The inclination angle of the first inclined surface 21 is preferably 60°. A second inclined surface 22 inclined towards the opposite side direction is provided on one side of each tool head 2. The inclination angle of the second inclined surface 22 is preferably 5°. The first inclined surface 21 and the second inclined surface 22 intersect and form a tool tip arc 23 at one corner end of the intersection. A rake face 24 with the tool tip arc 23 is formed on one side surface of the tool head 2 between the first inclined surface 21 and the second inclined surface 22. The tool tip arc 23 contacts the inner hole wall of the workpiece through the machining avoidance of the first inclined surface 21 and the second inclined surface 22 to perform reaming machining on the workpiece. A third inclined surface 25 is also provided at the top of the tool head 2. The third inclined surface 25 extends from the rake face 24 as the starting side towards the opposite side direction of the tool head 2 and gradually inclines towards the direction of the base body 1. The inclination angle of the third inclined surface 25 is 30°. A fourth inclined surface 26 is also provided at the top of the tool head 2. The fourth inclined surface 26 extends from the side of the first inclined surface 21 away from the rake face 24 to the edge of the tool head 2 and gradually inclines towards the direction of the base body 1. The inclination angle of the fourth inclined surface 26 is 60°. The third inclined surface 25 and the fourth inclined surface 26 are used to avoid the opening end face of the workpiece so that the tool tip arc 23 contacts the opening end face of the workpiece, and the opening end face of the workpiece is swept, forming the third inclined surface 25 and the fourth inclined surface 26, and the inclination angle of the fourth inclined surface 26 is larger than that of the third inclined surface 25, which is beneficial to effectively improving the rigidity of the tool tip arc 23 while performing avoidance. Further, the tool tip arc and the avoidance through the inclined surface make the cutting part smaller, which is beneficial to adapting to the machining of small-aperture workpieces with a tapered hole diameter below 2.00 mm, effectively solving the problem that the traditional boring tool needs to set a larger cutting part to maintain rigidity when performing inner hole reaming by its own rotation under the same material, and high-strength and high-rigidity materials are required for making a small cutting part in the inner hole machining of a smaller aperture, resulting in higher costs.
[0016] Referring to Figure 1 and Figure 2, Further, the opposite two side faces of the substrate 1 in the thickness direction are respectively the front face and the back face. The rake face 24 of the tool tip arc 23 is flush with the front face of the substrate 1. Avoidance grooves 11 are concavely provided on one side face of each of the two acute-angle ends of the substrate 1. The side wall surface of the avoidance groove 11 is inclined and tangent to the second inclined surface 22 of the tool head 2 and is flush therewith. This setting elongates the avoidance length of the second inclined surface 22 with respect to the inner hole wall of the workpiece, which is beneficial for making the tool head 2 short to maintain the rigidity of the tool head 2. One side face of the tool head 2 opposite to the second inclined surface 22 is tangent to and flush with the other side face of the acute-angle end of the substrate 1 away from the avoidance groove 11, so that the substrate 1 provides sufficient support for the tool head 2 to ensure the rigidity of the tool head 2. The second inclined surfaces 22 of the two tool heads 2 face in opposite directions, so that the tool head 2 is adapted to the parallelogram-shaped substrate 1. When replacing the tool head 2 for use, rotating the substrate 1 by 180° can realize the replacement and use of the tool head 2, which is relatively practical. The setting of the two tool heads 2 reduces the processing cost.
[0017] Refer to Figure 2 , The thickness of the tool head 2 is less than the thickness of the substrate 1, and the thickness of the tool head 2 is one-third of the thickness of the substrate 1, making the tool head 2 small and flexible, which is convenient for processing small holes.
[0018] Refer to Figure 1 , Bolt holes 12 penetrating through the substrate 1 itself are provided on the front face of the substrate 1. The substrate 1 is bolted to an external tool holder through the bolt holes 12. The bolt locking is a detachable fixing method, which is convenient for the replacement and use of the cutting insert, and is relatively practical.
[0019] Refer to Figure 2 , Chip removal grooves 27 are concavely provided on the rake face 24 of the tool head 2. The side wall surface of the chip removal groove 27 extends from the side of the rake face 24 away from the substrate 1 towards the substrate 1 and gradually inclines towards the side of the tool head 2 away from the rake face 24. And the bottom surface of the chip removal groove 27 is an arc surface and is tangent to its side wall surface. Chip removal through the chip removal groove 27 is beneficial to reducing the situation that waste chips accumulate at the tool head 2, resulting in the wear of the arc tool tip and affecting the machining accuracy. The inclined side wall surface and the arc-shaped bottom surface of the chip removal groove 27 are beneficial for the waste chips to curl and be quickly discharged.
[0020] The implementation principle of a two-in-one boring tool tip in this application is as follows: the first inclined surface 21 and the second inclined surface 22 are used to avoid the inner hole wall, so that the tip arc 23 contacts the inner hole wall of the workpiece for reaming; the third inclined surface 25 and the fourth inclined surface 26 are used to avoid the opening end face of the workpiece, so that the tip arc 23 contacts the opening end face of the workpiece for facing machining. During machining, with the rotation of the workpiece, the tip arc 23 first contacts the outer periphery of the opening end face of the workpiece and feeds inward towards the inner hole to realize facing trimming of the opening end face of the workpiece. When the tip arc 23 reaches the inner hole position, it feeds in the axial direction of the workpiece to realize machining of the inner hole for reaming. This application uses one tool tip to ream the workpiece and face the opening surface, saving the time for tool change and installation adjustment, and having a high machining efficiency for the workpiece.
[0021] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A two-in-one boring insert, characterized in that: It includes a substrate, on which a cutting head is formed. At the top of the cutting head, there is a first inclined surface inclined towards the substrate direction. On one side of the cutting head, there is a second inclined surface inclined towards the opposite side direction. The first inclined surface intersects with the second inclined surface, and a tip arc is formed at a corner end of the intersection. On one side surface between the first inclined surface and the second inclined surface of the cutting head, a rake face with a tip arc is formed. At the top of the cutting head, there is also a third inclined surface, which extends from the rake face as the starting side towards the opposite side direction of the cutting head and gradually inclines towards the substrate direction. At the top of the cutting head, there is also a fourth inclined surface, which extends from one side edge of the first inclined surface away from the rake face to the edge of the cutting head and gradually inclines towards the substrate direction.
2. The two-in-one boring insert according to claim 1, characterized in that: A chip groove is recessed on the rake face of the cutting head. The side wall surface of the chip groove extends from the side of the rake face away from the substrate towards the substrate direction and gradually inclines towards the side of the cutting head away from the rake face, and the bottom surface of the chip groove is an arc surface and is tangent to its side wall surface.
3. The two-in-one boring cutter insert according to claim 1, wherein: The number of the cutting heads is two, and the two cutting heads are respectively formed at both ends of the substrate.
4. The two-in-one boring insert according to claim 1, wherein: The substrate is arranged in a parallelogram shape, and a group of opposite angles are acute angles, and chamfers are made at the two acute angle ends to form a flat surface. The two cutting heads are respectively formed on the flat surfaces formed at the two acute angle ends of the substrate. The opposite side surfaces in the thickness direction of the substrate are respectively the front surface and the back surface. The rake face of the tip arc is flush with the front surface of the substrate. Avoidance grooves are recessed on one side surface of the substrate at the two acute angle ends. The side wall surface of the avoidance groove is inclined and is tangent to the second inclined surface of the cutting head and is flush. The side surface of the cutting head opposite to the second inclined surface is tangent to and flush with the other side surface of the acute angle end of the substrate away from the avoidance groove.
5. The two-in-one boring insert according to claim 4, characterized in that: The thickness of the cutting head is less than the thickness of the substrate.
6. The two-in-one boring cutter insert according to claim 4, characterized in that: A bolt hole penetrating the substrate itself is opened on the front surface of the substrate.