Fine-adjustable end face grooving cutter

Abstract

An end face grooving cutter capable of being finely adjusted comprises a cutter body and a cutter head, a detachable cutter and an adjusting mechanism used for finely adjusting the position of the cutter are arranged on the cutter head, the adjusting mechanism comprises a mandrel and a shaft sleeve matched with the mandrel, the cutter is fixedly arranged on the shaft sleeve, and a dial is arranged on the mandrel. The tool bit is provided with a locking piece used for fixing the moving position of the shaft sleeve. Compared with the prior art, after adjustment is completed, the shaft sleeve is locked and fixed through the locking piece, the blade is prevented from shaking in the cutting process, and then damage to the blade and a workpiece is avoided; the chamfering part is arranged at the bottom of the cutting part and used for chamfering the end of the groove wall of the end face groove, synchronous machining of the end face groove and a chamfer is achieved through cooperation of the cutting part and the chamfering part, then the working efficiency is improved, and the machining time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to an end face groove cutter which can be finely adjusted. Background Art

[0002] Face slotters are a type of cutting tool used for metal processing, mainly used to process various flat and complex-shaped parts on milling machines, lathes and other mechanical equipment. Face slotters can be divided into straight-tooth face slotters, helical-tooth face slotters, T-shaped slotters and U-shaped slotters according to their different structures and uses.

[0003] The face slotting cutter is mainly composed of a cutter head, a blade body, a shank and a clamping part. The cutter head has one or more teeth for cutting and removing workpiece materials. Its design allows the cutter to move in the axial direction, and the radius of the back face of the cutter matches the radius of the workpiece to achieve precise groove processing. It is mainly used for processing face grooves, including grooving, chamfering, surface finishing, etc. Face slotting cutters play an important role in mechanical processing and are widely used due to their advantages such as high cutting efficiency, high processing accuracy and good surface finish.

[0004] A Chinese patent with application number 201721855305.6 discloses a composite tool for rough and fine boring with chamfering. The composite tool disclosed above includes a tool body and a tool head. The tool head is provided with a fine boring part and a rough boring part. The fine boring part is located at the top of the tool head, the rough boring part is located at the radial direction of the tool head, and the rough boring part is located between the fine boring part and the tool body. Both the fine boring part and the rough boring part are movably connected to the tool head, and the fine boring part and the rough boring part have different directions. A Chinese patent with application number 202022070476.6 discloses a fine-tuning annular groove cutter. The groove cutter disclosed above includes a rotating base, a movable base, a cutter body, a cutting blade, a clamping device, and a fine-tuning unit. The movable base is installed below the rotating base, and the cutter body is arranged at the lower part of the movable base and is located in the center of one side of the movable base. The cutting blade is installed at the lower part of the cutter body, and the cutting blade extends vertically downward from the bottom of the cutter body. The cutting blade is clamped and installed on the cutter body by a clamping device. The movable base is connected to the rotating base by a dovetail groove structure. The movable base can be adjusted by the fine-tuning unit to move horizontally on the dovetail groove structure. The direction of the horizontal movement of the movable base is consistent with the direction in which the cutter body and the cutting blade deviate from the center of the rotating base.

[0005] In the above-mentioned prior art disclosed, the position of the blade is adjusted by a fine-tuning unit. During adjustment, the movable base moves horizontally on the dovetail groove structure through the fine-tuning unit. The cutter body is arranged under the movable base, and the blade is installed at the bottom of the cutter body. The blade is prone to shaking during movement. At the same time, the blade cannot be effectively fixed after the adjustment is completed. The blade is prone to move during operation, which can easily cause damage to the blade and the processed workpiece. In addition, when the end face groove of the workpiece needs to be chamfered, the existing blade needs to be chamfered after the end face groove is processed, and cannot be processed at the same time, which makes the processing efficiency low. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provides a finely adjustable end face groove cutter which can adjust and tighten a blade and can realize simultaneous processing of end face groove and chamfer.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a fine-adjustable end face grooving cutter, including a cutter body and a cutter head, the cutter head is provided with a detachable cutter and an adjustment mechanism for fine-tuning the cutter position, the adjustment mechanism includes a mandrel and a sleeve matching the mandrel, the cutter is fixedly arranged on the sleeve, the mandrel is provided with a dial, and the cutter head is provided with a locking piece for fixing the moving position of the sleeve; the cutter includes a blade and a tool seat, the blade is provided with a cutting portion for processing the end face groove, and a chamfering portion for chamfering is formed at the bottom of the cutting portion.

[0008] As a preferred solution of the utility model, the end of the cutter head is provided with an adjustment hole arranged along the radial direction of the cutter head, the core shaft and the sleeve are both arranged in the adjustment hole, and the sleeve moves along the axial direction of the adjustment hole.

[0009] As a preferred solution of the utility model, the core shaft is provided with an external thread, the sleeve is sleeved on the core shaft, and the inner wall of the sleeve is provided with an internal thread matching the external thread.

[0010] As a preferred solution of the utility model, a locking portion for positioning the moving position of the sleeve is provided on the outer wall of the sleeve, and a fastening seam is provided on the sleeve along the axial direction of the sleeve, and the fastening seam is provided close to one side of the locking portion.

[0011] As a preferred solution of the utility model, a locking hole is formed on the cutter head, a locking piece is connected to the locking hole and passes through the locking hole to abut against the locking portion, and an internal thread threadedly connected to the locking piece is also provided on the inner wall of the locking hole.

[0012] As a preferred solution of the utility model, the shaft sleeve is provided with a limiting groove for limiting the moving distance of the shaft sleeve, and the inner wall of the adjustment hole is provided with a limiting block matching with the limiting groove.

[0013] As a preferred solution of the utility model, the cutting parts are located at two ends of the blade, and the two cutting parts are centrally symmetrical structures.

[0014] As a preferred solution of the utility model, the chamfered portion is arranged at the connection between the cutting portion and the side wall of the blade, and the chamfered portion is located on the inner side of the cutting portion.

[0015] As a preferred solution of the utility model, a mounting groove for installing the blade is formed on the knife seat, a storage groove for facilitating the placement of the cutting part is formed on the groove wall of the mounting groove, and a first mounting hole for connecting the blade is formed in the middle of the mounting groove, and a first connecting hole matching the first mounting hole is formed on the blade.

[0016] As a preferred solution of the utility model, the end of the knife seat is provided with a plug-in slot connected to the sleeve, a second connecting hole is formed in the middle of the plug-in slot, a plug-in block matching with the plug-in slot is provided at the bottom of the sleeve, and a second mounting hole matching with the second connecting hole is formed in the middle of the plug-in block.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The position of the blade is adjusted by the cooperation between the mandrel and the sleeve of the adjustment structure, which meets the requirements for processing end face grooves of different sizes. At the same time, the sleeve is locked and fixed by the locking member after the adjustment is completed, which prevents the blade from shaking during the cutting process, thereby avoiding damage to the blade and the workpiece. In addition, a cutting part is provided on the blade for processing the end face groove, and a chamfering part is provided at the bottom of the cutting part for chamfering the end of the end face groove wall. The cooperation between the cutting part and the chamfering part realizes the synchronous processing of the end face groove and the chamfer, thereby improving the work efficiency and saving the processing time.

[0019] 2. Furthermore, a fastening seam is provided on the shaft sleeve, and a locking portion is provided on the side wall of the shaft sleeve. When the blade position is adjusted, the locking member is tightened so that the locking member abuts against the locking portion. At this time, the fastening seam is reduced, so that the shaft sleeve is fastened to the core shaft, thereby achieving the fixation of the blade position. In addition, a limiting groove is provided on the side wall of the shaft sleeve, and a limiting block matching the limiting groove is provided in the adjustment hole of the cutter head to achieve the limitation of the moving distance of the shaft sleeve, thereby preventing the shaft sleeve from falling off the core shaft and causing bump damage to the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0022] Figure 3It is a structural schematic diagram of the mandrel of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the sleeve;

[0024] Figure 5 It is a schematic diagram of the structure of the bottom of the sleeve;

[0025] Figure 6 It is a schematic diagram of the structure of the knife seat;

[0026] Figure 7 This is a schematic diagram of the blade structure

[0027] Figure markings: tool body 1, assembly hole 101, tool head 2, locking hole 201, locking piece 202, limit block 203, adjustment hole 204, adjustment mechanism 3, core shaft 301, dial 3011, rotating hole 3012, sleeve 302, second mounting hole 3021, fastening seam 3022, locking portion 3023, limit groove 3024, plug-in block 3025, tool 4, tool holder 401, plug-in groove 4011, second connecting hole 4012, mounting groove 4013, first mounting hole 4014, storage groove 4015, blade 402, cutting portion 4021, chamfering portion 4022, first connecting hole 4023. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 7 As shown, a fine-adjustable end face grooving cutter comprises a cutter body 1 and a cutter head 2, the cutter head 2 is provided with a detachable cutter 4 and an adjustment mechanism 3 for fine-tuning the position of the cutter 4, the adjustment mechanism 3 comprises a mandrel 301 and a sleeve 302 matched with the mandrel 301, the cutter 4 is fixedly arranged on the sleeve 302, the mandrel 301 is provided with a dial 3011, the cutter head 2 is provided with a locking member 202 for fixing the moving position of the sleeve 302; the cutter 4 comprises a blade 402 and a cutter seat 401, the blade 402 is provided with a cutting portion 4021 for processing an end face groove, and a chamfering portion 4022 for chamfering is formed at the bottom of the cutting portion 4021.

[0030] Furthermore, the cutter body 1 and the cutter head 2 are both cylindrical structures, and the cutter head 2 is plugged into the end of the cutter body 1. Specifically, the connection between the cutter head 2 and the cutter body 1 is a cylindrical structure, and the cutter head 2 is plugged into the end of the cutter body 1. At the same time, an assembly hole 101 is provided on the cutter body 1, and the bolt fixes the cutter head 2 through the assembly hole 101. In addition, the cutter body can be replaced arbitrarily for installation and processing according to actual usage and the structure of the machine tool spindle; the adjustment mechanism 3 is arranged along the radial direction of the cutter head 2, and the core shaft 301 is rotatably arranged on the cutter head 2 The mandrel 301 only rotates on the cutter head 2 but does not move, and the relative position of the mandrel 301 and the cutter head 2 will not change, that is, the mandrel 301 is fixedly arranged relative to the cutter head 2, and the sleeve 302 moves along the axial direction of the mandrel 301 through the rotation of the mandrel 301. The tool 4 is fixedly arranged at the bottom of the sleeve 302, and the tool 4 moves synchronously with the sleeve 302. The sleeve 302 is driven to move by rotating the mandrel 301, thereby realizing the adjustment of the position of the tool 4, thereby meeting the size requirements of the end face groove.

[0031] The dial 3011 set on the top of the core shaft 301 abuts against the cutter head 2, and a rotating hole 3012 is set in the middle of the dial 3011. A wrench is inserted into the rotating hole 3012 to rotate the dial 3011 to achieve rotation of the core shaft. At the same time, the scale on the dial 3011 can be used to achieve precise adjustment of the moving position of the tool 4.

[0032] In addition, when the position adjustment of the tool 4 is completed, the sleeve 302 is locked and fixed by tightening the locking piece 202. The specific locking piece 202 is a locking bolt connected to the cutter head 2. Under the action of the locking bolt, the sleeve 302 is fastened to the core shaft 301, ensuring that the sleeve 302 will not move during the cutting process of the tool 4, thereby avoiding damage to the tool 4 and the workpiece due to the shaking of the tool 4.

[0033] The blade 402 is made of CBN material, and a higher cutting line speed can be used and good wear resistance can be obtained when processing gray cast iron. The cutting portion 4021 arranged on the blade 402 is located at the end of the blade 402, and the chamfering portion 4022 is arranged at the bottom of the cutting portion 4021. When the cutting portion 4021 cuts the end face groove, when the cutting portion 4021 penetrates into the end face groove, the chamfering portion 4022 abuts against the groove wall at the end of the end face groove, so that the groove wall can be chamfered, thereby realizing simultaneous processing of the end face groove and the chamfer, and improving the processing efficiency.

[0034] An adjustment hole 204 is provided at the end of the cutter head 2 along the radial direction of the cutter head 2, the core shaft 301 and the sleeve 302 are both arranged in the adjustment hole 204, and the sleeve 302 moves along the axial direction of the adjustment hole 204. Furthermore, the adjustment hole 204 runs through the cutter head 2, the top of the adjustment hole 204 is a planar structure, the dial 3011 abuts on the planar structure, the core shaft 301 is inserted in the adjustment hole 204, and under the action of the dial 3011, the core shaft 301 does not move during rotation, the sleeve 302 is inserted in the adjustment hole 204 and connected to the core shaft 301, and the sleeve 302 is driven to move by the rotation of the core shaft 301.

[0035] Specifically, the core shaft 301 is provided with an external thread, the sleeve 302 is sleeved on the core shaft 301, and the inner wall of the sleeve 302 is provided with an internal thread that matches the external thread, and the core shaft 301 is threadedly connected to the sleeve 302, thereby driving the movement of the sleeve 302.

[0036] A locking portion 3023 for positioning the moving position of the sleeve 302 is provided on the outer wall of the sleeve 302, and a fastening slit 3022 is provided on the sleeve 302 along the axial direction of the sleeve 302. The fastening slit 3022 is provided close to one side of the locking portion 3023. Furthermore, the locking portion 3023 is a planar structure provided along the axial direction of the sleeve 302. The fastening slit 3022 is provided on the side wall of the sleeve 302, and the top end of the fastening slit 3022 is an open structure. The fastening slit 3022 is provided in parallel with the locking portion 3023.

[0037] A locking hole 201 is formed on the cutter head 2, and the locking piece 202 is connected to the locking hole 201 and passes through the locking hole 201 to abut against the locking portion 3023, and the inner wall of the locking hole 201 is also provided with an internal thread threadedly connected to the locking piece 202. Furthermore, the locking hole 201 is arranged along the radial direction of the cutter head 2, and the locking hole 201 is communicated with the adjustment hole 204, and the locking piece 202 is connected to the locking hole 201 by threading, and the end of the locking piece 202 abuts against the locking portion 3023; when the locking piece 202 is tightened, the locking portion 3023 is deformed, thereby reducing the thickness of the fastening seam 3022, and then the side wall of the sleeve 302 located at the fastening seam 3022 abuts against the core shaft 301, and under the action of the locking piece 202, the sleeve 302 and the core shaft 301 are kept stationary, thereby achieving the fastening of the tool 4.

[0038] A limit groove 3024 is provided on the sleeve 302 for limiting the moving distance of the sleeve 302, and a limit block 203 is provided on the inner wall of the adjusting hole 204 for matching with the limit groove 3024. Furthermore, the limit groove 3024 is arranged along the length direction of the sleeve 302, and the limit groove 3024 and the locking portion 3023 are located on the opposite sides of the sleeve 302. The limit block 203 is fixedly arranged on the inner wall of the adjusting hole 204. The moving distance of the sleeve 302 is limited by the cooperation of the limit block 203 and the limit groove 3024, thereby preventing the sleeve 302 from detaching and falling from the core shaft 301, thereby avoiding damage to the blade 402.

[0039] The cutting portions 4021 are located at both ends of the blade 402, and the two cutting portions 4021 are of a centrally symmetrical structure. Furthermore, the cutting portions 4021 are protruded toward the opposite ends of the blade 402, and the cutting portions 4021 are centrally symmetrically designed around the center of the blade 402. When the cutting edge of the cutting portion 4021 at one end of the blade 402 is worn, the cutting portion 4021 at the other end can be replaced to continue cutting, thereby eliminating the need to immediately replace the entire blade 402, thereby reducing the increased production cost due to frequent replacement of the blade 402, and extending the service life of the blade 402, thereby improving cutting efficiency, cost-effectiveness, and sustainability of the equipment.

[0040] In addition, the chamfered portion 4022 is arranged at the connection between the cutting portion 4021 and the side wall of the blade 402, and the chamfered portion 4022 is located on the inner side of the cutting portion 4021. The chamfered portion 4022 and the cutting portion 4021 are an integrally formed structure, which ensures the rigidity of the cutting portion 4021 and the chamfered portion 4022. When the end face groove is processed in place, the outer chamfer is also directly processed in place, thereby improving the processing efficiency.

[0041] A mounting groove 4013 for mounting the blade 402 is formed on the blade holder 401, a storage groove 4015 for placing the cutting portion 4021 is formed on the groove wall of the mounting groove 4013, and a first mounting hole 4014 for connecting the blade 402 is formed in the middle of the mounting groove 4013, and a first connecting hole 4023 matching the first mounting hole 4014 is formed on the blade 402. Furthermore, the blade 402 is fixed in the mounting groove 4013, and the storage groove 4015 is arranged at the inner corner of the mounting groove 4013. When the blade 402 is fixed in the mounting groove 4013, the cutting portion 4021 is just located in the storage groove 4015, thereby achieving protection for the cutting portion 4021. In addition, screws are connected in the first mounting hole 4014 and the first connecting hole 4023, thereby achieving installation and fixation of the blade 402.

[0042] The end of the tool holder 401 is provided with a plug-in slot 4011 connected to the sleeve 302, and a second connecting hole 4012 is formed in the middle of the plug-in slot 4011. A plug-in block 3025 matching the plug-in slot 4011 is provided at the bottom of the sleeve 302, and a second mounting hole 3021 matching the second connecting hole 4012 is formed in the middle of the plug-in block 3025. Furthermore, the plug-in slot 4011 is arranged on the upper surface of the tool holder 401, and the plug-in block 3025 at the bottom of the sleeve 302 cooperates with the plug-in slot 4011 to limit the tool holder 401 and prevent the tool holder 401 from rotating and shaking. The tool holder 401 is installed and fixed by connecting screws in the second connecting hole 4012 and the second mounting hole 3021.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0044] Although the present invention uses the following terms more frequently: tool body 1, assembly hole 101, tool head 2, locking hole 201, locking member 202, limiting block 203, adjusting hole 204, adjusting mechanism 3, spindle 301, dial 3011, rotating hole 3012, sleeve 302, second mounting hole 3021, fastening seam 3022, locking portion 3023, limiting groove 3024, plug-in block 3025, tool 4, tool holder 401, plug-in groove 4011, second connecting hole 4012, mounting groove 4013, first mounting hole 4014, storage groove 4015, blade 402, cutting portion 4021, chamfering portion 4022, first connecting hole 4023, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A finely adjustable end face grooving cutter, comprising a cutter body (1) and a cutter head (2), characterized in that: The cutter head (2) is provided with a detachable cutter (4) and an adjustment mechanism (3) for fine-tuning the position of the cutter (4); the adjustment mechanism (3) comprises a mandrel (301) and a shaft sleeve (302) matched with the mandrel (301); the cutter (4) is fixedly arranged on the shaft sleeve (302); the mandrel (301) is provided with a dial (3011); the cutter head (2) is provided with a locking member (202) for fixing the moving position of the shaft sleeve (302); the cutter (4) comprises a blade (402) and a blade seat (401); the blade (402) is provided with a cutting portion (4021) for machining an end face groove; a chamfering portion (4022) for chamfering is formed at the bottom of the cutting portion (4021).

2. A finely adjustable face groove cutter according to claim 1, characterized in that: The end of the cutter head (2) is provided with an adjustment hole (204) arranged along the radial direction of the cutter head (2); the core shaft (301) and the shaft sleeve (302) are both arranged in the adjustment hole (204), and the shaft sleeve (302) moves along the axial direction of the adjustment hole (204).

3. A finely adjustable face groove cutter according to claim 1, characterized in that: The core shaft (301) is provided with an external thread, the shaft sleeve (302) is sleeved on the core shaft (301), and the inner wall of the shaft sleeve (302) is provided with an internal thread matching the external thread.

4. A finely adjustable face groove cutter according to claim 1, characterized in that: The outer wall of the shaft sleeve (302) is provided with a locking portion (3023) for positioning the moving position of the shaft sleeve (302), and the shaft sleeve (302) is provided with a fastening slit (3022) arranged along the axial direction of the shaft sleeve (302), and the fastening slit (3022) is arranged close to one side of the locking portion (3023).

5. A finely adjustable face groove cutter according to claim 4, characterized in that: The cutter head (2) is formed with a locking hole (201), a locking member (202) is connected to the locking hole (201) and passes through the locking hole (201) to abut against the locking portion (3023), and an internal thread which is threadedly connected to the locking member (202) is also provided on the inner wall of the locking hole (201).

6. A finely adjustable face groove cutter according to claim 2, characterized in that: The shaft sleeve (302) is provided with a limiting groove (3024) for limiting the moving distance of the shaft sleeve (302), and the inner wall of the adjustment hole (204) is provided with a limiting block (203) that matches the limiting groove (3024).

7. A finely adjustable face groove cutter according to claim 1, characterized in that: The cutting portions (4021) are located at two ends of the blade (402), and the two cutting portions (4021) are centrally symmetrical structures.

8. The finely adjustable face groove cutter according to claim 1, characterized in that: The chamfered portion (4022) is arranged at the connection between the cutting portion (4021) and the side wall of the blade (402), and the chamfered portion (4022) is located on the inner side of the cutting portion (4021).

9. A finely adjustable face groove cutter according to claim 1, characterized in that: The blade seat (401) is formed with a mounting groove (4013) for mounting the blade (402); a storage groove (4015) for facilitating the placement of the cutting portion (4021) is formed on the groove wall of the mounting groove (4013); a first mounting hole (4014) for connecting the blade (402) is formed in the middle of the mounting groove (4013); and a first connecting hole (4023) matching the first mounting hole (4014) is formed on the blade (402).

10. The finely adjustable face groove cutter according to claim 1, characterized in that: The end of the knife seat (401) is provided with a plug-in groove (4011) connected to the shaft sleeve (302), and a second connecting hole (4012) is formed in the middle of the plug-in groove (4011). The bottom of the shaft sleeve (302) is provided with a plug-in block (3025) matched with the plug-in groove (4011), and a second mounting hole (3021) matched with the second connecting hole (4012) is formed in the middle of the plug-in block (3025).

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