Reinforced turning tool

Abstract

The invention discloses a reinforced turning tool. The reinforced turning tool comprises a tool bar, a supporting block is installed at the front end of the tool bar, and a blade is installed on the supporting block; the cutter bar comprises a clamping part, a supporting part and a head part, a clamping groove and two threaded holes are formed in the head part, the supporting block is embedded into the clamping groove, a screw is pressed in the threaded holes, and one end of the screw tightly presses the top of the supporting block. According to the reinforced turning tool provided by the invention, the tool bar comprising the clamping part, the supporting part and the head part is arranged, and the clamping part is subjected to hardening treatment and grinding treatment, so that the deformation of the tool bar after repeated clamping is reduced, the clamping difficulty of the tool is reduced, the skill requirement of tool mounting on an operator is reduced, the tool mounting speed is increased, and the machining efficiency is improved. And by means of the supporting block capable of falling off, the service life of the cutter bar can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and in particular to a reinforced turning tool. Background Art

[0002] During the turning process, a special cutting tool needs to be installed on the tool shank for cutting. The stability of the tool shank has a crucial impact on the machining accuracy, surface finish, and tool life. However, in the actual production process, due to various factors such as the characteristics of the workpiece material, the performance of the machine tool, the setting of cutting parameters, and the design and quality of the tool itself, turning often faces problems such as instability, such as vibration, dimensional accuracy fluctuations, and increased surface roughness.

[0003] When boring, the installation of the turning tool is one of the most important steps. In order to obtain better cutting effects and effectively avoid chatter, the installation of the turning tool takes a long time and is slow, which is likely to affect production efficiency. Moreover, ordinary turning tools require a high level of skill proficiency for operators, and it is difficult for novices to master, which is not conducive to popularization and use.

[0004] Therefore, it is necessary to provide a reinforced turning tool to solve the above technical problems. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a reinforced turning tool that can reduce the clamping difficulty of the tool and improve the tool installation speed.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] Reinforced turning tool, comprising: a tool shank 1, a support block 2 is installed at the front end of the tool shank 1, a cutting blade 3 is installed on the support block 2, and the cutting blade 3 is detachable. Specifically, the tool shank 1 includes a clamping portion 4, a support portion 5 and a head portion 6. A clamping groove 7 and two threaded holes 8 are formed on the head portion 6. The support block 2 is embedded in the clamping groove 7, and a screw 9 is screwed into the threaded hole 8 so that the top end of the screw 9 presses tightly against the support block 2, fixing the support block 2 in the clamping groove 7. The whole tool shank 1 is made of cemented carbide material. The clamping portion 4, as the part connecting to the tool rest, adopts a quenching process to increase its hardness, preventing partial deformation caused by long-term clamping and making it inconvenient for the next clamping. At the same time, the clamping portion 4 is ground by a grinding machine, which can better ensure the form and position tolerance. And the whole tool shank 1 is thickened to reduce the length-diameter ratio, improving the overall structural rigidity. This turning tool has stronger rigidity and a smaller length-diameter ratio. When machining a large-diameter inner hole (boring operation), it is not easy to generate chatter. When the clamping portion 4 is fixed to the tool rest by bolts, due to the quenching process, its rigidity is enhanced and it is not easy to deform, suitable for repeated use. And the clamping portion 4 is processed by a grinding process, making its form and position tolerance smaller. When fixed to the tool rest, the bottom of the clamping portion 4 is in direct contact with the tool rest and is fixed by bolts above. The axis position of the tool shank 1 is more stable and not easy to deviate. A horizontal bubble level is installed on the top of the support block 2 to calibrate the level of the support block 2, so that the cutting blade 3 can naturally have a suitable cutting angle of 2-5 degrees, and the position of the tool tip is exactly at the optimal height, which can effectively reduce the installation and calibration time of the tool, lower the skill requirements of the operator for tool installation, and is more suitable for novices to use. And when there is an axial impact at a specific position between the position of the cutting blade 3 and the workpiece, it will cause the support block 2 to fall off from the clamping groove 7, thus avoiding greater impact on the tool shank 1 and being beneficial to improving the service life of the tool shank 1.

[0008] Preferably, a guiding groove 10 is formed inside the clamping groove 7. The depth of the guiding groove 10 is 2 mm and the width is 3-4 mm. An integrally formed guiding strip 11 is installed at the bottom of the support block 2. The specifications of the guiding strip 11 are adapted to those of the guiding groove 10. During installation, the guiding strip 11 at the bottom of the support block 2 is aligned with the guiding groove 10 and inserted. A part of the support block 2 is installed into the clamping groove 7 until the protruding part at the front end of the support block 2 abuts against the outer wall of the head portion 6. Then the screw 9 can be tightened to fix the support block 2 in the clamping groove 7.

[0009] Preferably, a stabilizing plate 12 is installed at the tail of the clamping portion 4. During installation, when the clamping portion 4 is fixed to the tool rest, the stabilizing plate 12 tightly abuts against the side of the tool rest, forming an axial tension on the clamping portion 4, so that when the clamping portion 4 is stressed, due to the axial tension, it is more difficult to bend, thereby improving the use stability of the tool.

[0010] Preferably, a connecting rod 13 is installed at one end of the clamping portion 4, and a nut 14 is installed on the connecting rod 13. The connecting rod 13 passes through the stabilizing plate 12. During use, first place the clamping portion 4 on the tool holder. After adjusting the position of the blade 3, first tighten the screw on the tool holder at the position away from the connecting rod 13, and then tighten the nut 14 so that the two abutting portions 15 on one side of the stabilizing plate 12 respectively abut against the upper and lower sides of the tool holder, thereby performing axial stretching on the clamping portion 4, and then tighten the remaining screws on the tool holder.

[0011] Preferably, a reinforcing sleeve 16 is installed on the supporting portion 5 to further increase the structural strength of the supporting portion 5 and improve the structural rigidity of the tool shank 1, which is beneficial to improving the stability of the turning tool during machining and further reducing the possibility of tool chatter.

[0012] Preferably, a limiting groove 18 is provided on the supporting portion 15, and a threaded half groove 19 is provided on the reinforcing sleeve 16. The threaded half groove 19 has only half a thread line in the groove. The limiting groove 18 is designed with a depth that is deeper on the outside and shallower on the inside, that is, the limiting groove 18 is inclined. Therefore, after the reinforcing sleeve 16 is sleeved on the supporting portion 5, align the threaded half groove 19 with the limiting groove 18, and then use the limiting bolt 17 to screw into the threaded half groove 19. As the limiting bolt 17 is continuously screwed in, since the inside of the limiting groove 18 is shallower, the limiting bolt 17 gradually presses against the limiting groove 18, fixing the reinforcing sleeve 16 on the supporting portion 5. Since the limiting bolt 17 is arranged at the end face position, it does not affect the use of the turning tool.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) By providing a tool shank including a clamping portion, a supporting portion, and a head, and performing hardening treatment and grinding treatment on the clamping portion, the present invention is beneficial to reducing the deformation of the tool shank after repeated clamping, reducing the clamping difficulty of the tool, thereby reducing the skill requirements for the operator in tool installation, improving the tool installation speed, and using the detachable supporting block, which is beneficial to improving the service life of the tool shank;

[0015] (2) By providing a guiding groove and a guiding strip, the present invention can facilitate the positioning of the installation position of the supporting block, and thus the positioning of the installation position of the blade;

[0016] (3) By installing a stabilizing plate at one end of the clamping portion, the present invention can form axial stretching on the clamping portion, improve the use stability of the tool shank, and thus improve the use stability of the tool;

[0017] (4) By providing a connecting rod and a nut, the present invention can facilitate the installation and disassembly of the stabilizing plate and can conveniently adjust the axial stretching force of the clamping portion;

[0018] (5) By installing a reinforcing sleeve on the supporting part, the present invention can improve the structural rigidity of the tool shank, enhance the operation stability of the turning tool, and is not prone to tool chatter.

[0019] (6) By providing a limiting groove, a threaded half-groove and a limiting bolt, the present invention can facilitate the installation and fixation of the reinforcing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the reinforced turning tool provided by the present invention;

[0021] Figure 2 is Figure 1 the exploded structural diagram of the reinforced turning tool shown;

[0022] Figure 3 is a schematic structural diagram of an embodiment of the tool shank;

[0023] Figure 4 is a schematic structural diagram of an embodiment of the support block;

[0024] Figure 5 is a schematic structural diagram of an embodiment of the tool shank;

[0025] Figure 6 is a schematic installation structure diagram of the stabilizing plate;

[0026] Figure 7 is a schematic structural diagram of an embodiment of the tool shank;

[0027] Figure 8 is a schematic structural diagram of an embodiment of the tool shank;

[0028] Figure 9 is a schematic structural diagram of the reinforcing sleeve.

[0029] Among them, the names corresponding to the reference numerals are: 1 - tool shank, 2 - support block, 3 - blade, 4 - clamping part, 5 - supporting part, 6 - head, 7 - clamping groove, 8 - threaded hole, 9 - screw, 10 - guiding groove, 11 - guiding strip, 12 - stabilizing plate, 13 - connecting rod, 14 - nut, 15 - abutting part, 16 - reinforcing sleeve, 17 - limiting bolt, 18 - limiting groove, 19 - threaded half-groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present invention will be further described below in conjunction with the drawings and embodiments. The implementation manners of the present invention include but are not limited to the following embodiments.

[0031] Embodiment 1:

[0032] As Figure 1-2As shown in the figure, the enhanced turning tool provided by the present invention includes: a tool shank 1. A support block 2 is installed at the front end of the tool shank 1, and a cutting blade 3 is installed on the support block 2. The cutting blade 3 is detachable. Specifically, the tool shank 1 includes a clamping portion 4, a support portion 5, and a head portion 6. A clamping groove 7 and two threaded holes 8 are provided on the head portion 6. The support block 2 is embedded in the clamping groove 7, and a screw 9 is screwed into the threaded hole 8 so that the top end of the screw 9 tightly presses the support block 2, fixing the support block 2 in the clamping groove 7. The entire tool shank 1 is made of cemented carbide material. The clamping portion 4, as the part connecting to the tool rest, adopts a quenching process to increase hardness, preventing partial deformation caused by long-term clamping and making it inconvenient for the next clamping. At the same time, the clamping portion 4 is ground by a grinding machine, which can better ensure the geometric tolerance. And the entire tool shank 1 is thickened to reduce the length-diameter ratio, improving the overall structural rigidity. This turning tool has stronger rigidity and a smaller length-diameter ratio. When machining a large-diameter internal hole (boring operation), it is not easy to generate chatter. When the clamping portion 4 is fixed to the tool rest by bolts, due to its quenching process, its rigidity is enhanced and it is not easy to deform, suitable for repeated use. And the clamping portion 4 is processed by a grinding process, making its geometric tolerance smaller. When fixed to the tool rest, the bottom of the clamping portion 4 is in direct contact with the tool rest, and is fixed by bolts above. The axial position of the tool shank 1 is more stable and not easy to deviate. A horizontal bubble level is installed on the top of the support block 2 to calibrate the level of the support block 2, so that the cutting blade 3 can naturally have a suitable cutting angle of 2-5 degrees, and the position of the tool tip is exactly at the optimal height, which can effectively reduce the installation and calibration time of the tool, reduce the skill requirements of the operator for tool installation, and is more suitable for novice use. And when there is an axial impact at a specific position between the position of the cutting blade 3 and the workpiece, it will cause the support block 2 to fall off from the clamping groove 7, thus avoiding greater impact on the tool shank 1 and being beneficial to improving the service life of the tool shank 1. It should be noted that the positions of the tool rest, the workpiece, and the lathe chuck are determined, and the specific data of the turning tool are specifically designed according to the specifications of the tool rest, the workpiece, and the relative position of the chuck. The specific data are not elaborated here.

[0033] By setting the tool shank 1 including the clamping portion 4, the support portion 5, and the head portion 6, and performing hardening treatment and grinding treatment on the clamping portion 4, it is beneficial to reduce the deformation of the tool shank 1 after repeated clamping, reduce the clamping difficulty of the tool, and further reduce the skill requirements of the operator for tool installation, improve the tool installation speed. Using the detachable support block 2 can be beneficial to improving the service life of the tool shank 1.

[0034] Embodiment 2:

[0035] As Figure 3-4As shown, a guide groove 10 is provided on the inner side of the card slot 7. The depth of the guide groove 10 is 2 mm and the width is 3-4 mm. An integrally formed guide bar 11 is installed at the bottom of the support block 2. The specifications of the guide bar 11 are adapted to the specifications of the guide groove 10. During installation, the guide bar 11 at the bottom of the support block 2 is aligned with the guide groove 10 and inserted, and a part of the support block 2 is installed into the card slot 7 until the raised part of the front end of the support block 2 is against the outer wall position of the head 6. Then the screws 9 can be tightened to fix the support block 2 in the card slot 7.

[0036] By providing the guide groove 10 and the guide bar 11 , it is possible to conveniently locate the installation position of the support block 2 and further locate the installation position of the blade 3 .

[0037] Example 3:

[0038] like Figure 5 As shown, in this embodiment, a stabilizing plate 12 is installed at the tail of the clamping portion 4. During installation, when the clamping portion 4 is fixed on the tool holder, the stabilizing plate 12 tightly presses against the side of the tool holder, which forms an axial stretch on the clamping portion 4, so that when the clamping portion 4 is subjected to force, it is more difficult to bend due to the axial stretching effect, thereby improving the stability of the tool.

[0039] By installing the stabilizing plate 12 at one end of the clamping portion 4, the clamping portion 4 can be stretched in the axial direction, thereby improving the stability of the tool rod 1 and further improving the stability of the tool.

[0040] Example 4:

[0041] like Figure 5-6 As shown, in this embodiment, a connecting rod 13 is installed at one end of the clamping portion 4, and a nut 14 is installed on the connecting rod 13. The connecting rod 13 passes through the stabilizing plate 12. When in use, the clamping portion 4 is first placed on the tool holder. After adjusting the position of the blade 3, the screw on the tool holder at a position away from the connecting rod 13 is first tightened, and then the nut 14 is tightened, so that the two abutting portions 15 on one side of the stabilizing plate 12 respectively abut against the upper and lower sides of the tool holder, and then the clamping portion 4 is axially stretched, and then the remaining screws on the tool holder are tightened.

[0042] By providing the connecting rod 13 and the nut 14 , the stabilizing plate 12 can be easily installed and disassembled, and the axial tensile strength of the clamping portion 4 can be easily adjusted.

[0043] Example 5:

[0044] like Figure 7 As shown, in this embodiment, a reinforcing sleeve 16 is installed on the support portion 5 to further increase the structural strength of the support portion 5 and improve the structural rigidity of the tool rod 1, which can be beneficial to improving the stability of the turning tool during processing and further reducing the possibility of tool vibration.

[0045] By installing a reinforcing sleeve 16 on the support portion 5, the structural rigidity of the tool shank 1 can be improved, the operation stability of the turning tool can be enhanced, and chatter is not likely to occur.

[0046] As Figure 6 shown, in this embodiment, a limiting groove 18 is formed in the support portion 15, and a threaded half groove 19 is formed in the reinforcing sleeve 16. As the name implies, the threaded half groove 19 has only half a thread line in the groove. The limiting groove 18 is designed with a depth that is deeper on the outside and shallower on the inside, that is, the limiting groove 18 is inclined. Therefore, after the reinforcing sleeve 16 is sleeved on the support portion 5, the threaded half groove 19 is aligned with the limiting groove 18, and then the limiting bolt 17 is screwed into the threaded half groove 19. As the limiting bolt 17 is continuously screwed in, since the inside of the limiting groove 18 is shallower, the limiting bolt 17 gradually presses against the limiting groove 18, fixing the reinforcing sleeve 16 on the support portion 5. Since the limiting bolt 17 is arranged at the end face position, it does not affect the use of the turning tool.

[0047] By providing the limiting groove 18, the threaded half groove 19 and the limiting bolt 17, the installation and fixation of the reinforcing sleeve 16 can be facilitated.

[0048] After designing the tool, a CK6140 numerically controlled machine tool is used to bore a workpiece with a hole diameter of 60 mm, a length of 160 mm, and a cutting amount of 20 mm on one side. Multiple skilled workers and apprentices are selected in the factory area for testing. The conventional tool and the tool designed by the present invention are used for test comparison. The test evaluation is divided into multiple parts. The first is to test the clamping speed of the tool, the second is to test the cutting duration of the workpiece, the third is to evaluate the machining quality of the workpiece, and the fourth is to evaluate the proficiency requirements for the operator. The test results are shown in Table 1:

[0049]

[0050] Table 1

[0051] It can be clearly seen from Table 1 that when using the tool of the present invention, the proficiency requirements for the operator are lower, the installation difficulty of the tool is reduced, the installation duration of the tool is shortened, and furthermore, the machining speed of the workpiece is significantly increased, and the machining quality is also correspondingly improved, which is beneficial to improving the machining efficiency and machining quality of the workpiece and reducing the operation difficulty.

[0052] Working principle: When in use, when the clamping part 4 is fixed on the tool rest by bolts, due to the quenching process it has undergone, its rigidity is enhanced, it is not easily deformed, and it is suitable for repeated use. Moreover, the clamping part 4 has been processed by the grinding process, making its geometric tolerance smaller. When fixed on the tool rest, the bottom of the clamping part 4 is in direct contact with the tool rest, and it is fixed by bolts above. The axis position of the tool shank 1 is more stable and not prone to deviation. By installing a horizontal bubble level on the top of the support block 2 and calibrating the level of the support block 2, the cutting blade 3 can naturally form a suitable cutting angle of 2-5 degrees, and the position of the tool tip is exactly at the optimal height, which can effectively reduce the installation and calibration time of the tool, reduce the skill requirements for the operator during tool installation, and is more suitable for novices to use. And when there is an axial impact at a specific position between the position of the cutting blade 3 and the workpiece, it will cause the support block 2 to fall off from the card slot 7, thereby avoiding a greater impact on the tool shank 1 caused by the impact, which is beneficial to improving the service life of the tool shank 1. It should be noted that the positions of the tool rest, the workpiece, and the lathe chuck have been determined, and the specific data of the turning tool are specifically designed according to the specifications of the tool rest, the workpiece, and the relative position of the chuck. The specific data are not elaborated here.

Claims

1. An enhanced turning tool, characterized in that, Comprising: A tool shank (1), a support block (2) is installed at the front end of the tool shank (1), and a blade (3) is installed on the support block (2); The tool shank (1) includes a clamping portion (4), a support portion (5) and a head portion (6). A clamping groove (7) and two threaded holes (8) are formed in the head portion (6). The support block (2) is embedded in the clamping groove (7), screws (9) are arranged in the threaded holes (8), and one end of each screw (9) presses against the top of the support block (2).

2. The enhanced turning tool according to claim 1, wherein, The tool shank (1) is subjected to hardening and grinding treatment.

3. An enhanced turning tool according to claim 1, characterized in that, A guiding groove (10) is formed inside the clamping groove (7).

4. The enhanced turning tool according to claim 3, wherein An integrally formed guiding strip (11) is installed at the bottom of the support block (2), and the guiding strip (11) is embedded in the guiding groove (10).

5. The enhanced turning tool according to claim 1, characterized in that, A stabilizing plate (12) is installed at the tail of the clamping portion (4).

6. The enhanced turning tool according to claim 5, characterized in that, One end of the clamping portion (4) is installed with a connecting rod (13), a nut (14) is installed on the connecting rod (13), and the connecting rod (13) passes through the stabilizing plate (12).

7. An enhanced turning tool according to claim 1, characterized in that, A reinforcing sleeve (16) is installed on the support portion (5).

8. The enhanced turning tool according to claim 7, wherein, A limiting groove (18) is formed in the support portion (5), a threaded half groove (19) is formed in the reinforcing sleeve (16), and a limiting bolt (17) is installed in the threaded half groove (19).

9. An enhanced turning tool according to claim 8, characterized in that, The limiting groove (18) is inclined.

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