Gear machining tool bit with positioning groove

Abstract

The gear machining tool bit comprises a tool shaft sleeve and a gear sleeve, the positioning grooves are formed in the upper side and the lower side of the tool shaft sleeve, positioning blocks are installed on the inner side wall of the gear sleeve, the positioning blocks are installed in the positioning grooves in an inserted mode, the gear sleeve is connected to the outer portion of the tool shaft sleeve in a sleeving mode through matching of the positioning blocks and the positioning grooves, and tool teeth are installed on the outer side of the gear sleeve. A main cover plate and an auxiliary cover plate are installed on the side wall of the cutter shaft sleeve, the main cover plate and the auxiliary cover plate are located on the two sides of the cutter shaft sleeve respectively, the main cover plate and the auxiliary cover plate can clamp the gear sleeve, a through groove is formed in the side wall of the main cover plate, a bolt is installed in the through groove in an inserted mode, and a nut is installed on the inner side wall of the auxiliary cover plate in an inserted mode. The gear sleeve can be independently replaced, the maintenance cost is saved, in addition, the gear sleeve can be conveniently and accurately installed through the arrangement of the positioning groove, and the situation that a gear is unqualified during gear machining due to errors is avoided.

Description

Technical Field

[0001] This patent relates to the technical field of gear processing tools, and specifically relates to a gear processing tool head with a positioning groove. Background Art

[0002] A gear hob is a tool for cutting gears by the generation method according to the meshing principle of a helical gear pair. Currently, the conventionally designed gear hob includes a tool shaft sleeve and a plurality of tool teeth circumferentially distributed on the tool shaft sleeve. Chip spaces are formed between adjacent tool teeth. Currently, most of the tool teeth and the tool shaft sleeve are integrally formed. If one of the tool teeth is damaged during use, the entire hob cannot be used, which reduces its service life and increases costs.

[0003] The alloy gear hob with a replaceable tool body disclosed in the publication number CN208162785U adopts a design with a separated tool shaft and tool body, enabling the tool body to be replaced separately, thus saving costs.

[0004] However, the tool body in the above document is in a straight line. Since the gear hob rotates to process gears, when wear occurs, all the tool teeth in a full circle need to be processed. Summary of the Utility Model

[0005] The purpose of this patent is to provide a gear processing tool head with a positioning groove to solve the problems raised in the above background art.

[0006] To achieve the above purpose, this patent provides the following technical solution: A gear processing tool head with a positioning groove includes a tool shaft sleeve and a tooth sleeve. Positioning grooves are opened on both the upper and lower sides of the tool shaft sleeve. Positioning blocks are installed on the inner side wall of the tooth sleeve, and the positioning blocks are inserted and installed in the positioning grooves. The tooth sleeve is sleeved outside the tool shaft sleeve through the cooperation of the positioning blocks and the positioning grooves. Tool teeth are installed on the outer side of the tooth sleeve, and the tool teeth (5) are arranged in a spiral shape on the outside of the tooth sleeve (2).

[0007] Main covers and sub - covers are installed on the side wall of the tool shaft sleeve. The main cover and the sub - cover are respectively located on both sides of the tool shaft sleeve, and the main cover and the sub - cover can clamp the tooth sleeve.

[0008] A through - hole is opened on the side wall of the main cover. A bolt is inserted and installed in the through - hole. A nut is inserted and installed on the inner side wall of the sub - cover. A through - hole is opened on the side wall of the positioning block, and the bolt can pass through the through - hole on the side wall of the positioning block and be rotatably connected to the nut.

[0009] Preferably, the upper wall of the main cover plate is provided with a rotation-stop mechanism, and the rotation-stop mechanism includes a threaded hole, a screw and a rubber plug. The upper wall of the main cover plate is provided with a threaded hole, and the threaded hole is connected to the through groove. A screw is rotatably installed in the threaded hole, and the screw can be fitted with the side wall of the bolt. A rubber plug is inserted and installed in the threaded hole.

[0010] Preferably, a protective sleeve is installed on the side wall of the auxiliary cover plate, the protective sleeve is arranged on the outside of the nut, and the bolt can be inserted into the protective sleeve.

[0011] Preferably, a keyway is provided on the inner side wall of the knife shaft sleeve.

[0012] Preferably, one end of a connecting rod is installed on the side wall of the bolt head, and a conical rubber sleeve is installed on the other end of the connecting rod. The conical rubber sleeve is sleeved on the outside of the bolt head, and the conical rubber sleeve can seal the through groove.

[0013] Preferably, the side walls of the main cover plate and the auxiliary cover plate are both provided with clearance holes.

[0014] Compared with the prior art, the beneficial effects of this patent are:

[0015] The gear sleeve in this device can be removed from the cutter shaft sleeve, so that the gear sleeve can be replaced separately, saving maintenance costs. In addition, the positioning groove can be set to facilitate the accurate installation of the gear sleeve, avoiding errors that may cause gear failure during gear processing.

[0016] In addition, the device also provides a conical rubber sleeve on the outside of the bolt to protect the bolt and prevent the bolt from coming into contact with coolant, etc., which may cause rust on the bolt and affect the disassembly of the gear sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of this patent.

[0018] Figure 2 This is a side sectional view of this patent.

[0019] Figure 3 This is a schematic diagram of the bolt structure of this patent.

[0020] Figure 4 for Figure 2 Schematic diagram of the structure at point A in the middle.

[0021] In the figure: 1 cutter shaft sleeve, 2 gear sleeve, 3 positioning groove, 4 positioning block, 5 cutter teeth, 6 main cover plate, 7 auxiliary cover plate, 8 through groove, 9 bolt, 10 nut, 11 through hole, 12 anti-rotation mechanism, 13 threaded hole, 14 screw, 15 rubber plug, 16 protective sleeve, 17 keyway, 18 connecting rod, 19 tapered rubber sleeve, 20 clearance hole. Detailed implementation mode

[0022] The following will clearly and completely describe the technical solutions in the embodiments of this patent in conjunction with the accompanying drawings in the embodiments of this patent. Obviously, the described embodiments are only a part of the embodiments of this patent, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this patent.

[0023] Please refer to Figures 1-4 , this patent provides a technical solution: a gear machining cutter head with positioning grooves, including a cutter shaft sleeve 1 and a gear sleeve 2. Positioning grooves 3 are opened on both the upper and lower sides of the cutter shaft sleeve 1. A positioning block 4 is installed on the inner side wall of the gear sleeve 2. The positioning block 4 is inserted and installed in the positioning groove 3. The gear sleeve 2 is sleeved outside the cutter shaft sleeve 1 through the cooperation of the positioning block 4 and the positioning groove 3. A cutter tooth 5 is installed on the outer side of the gear sleeve 2. The cutter teeth 5 are arranged in a spiral shape on the outside of the gear sleeve 2;

[0024] When the cutter tooth 5 is damaged, the staff can disassemble the gear sleeve 2 with the damaged cutter tooth 5 from the cutter shaft sleeve 1, and then replace the gear sleeve 2, saving the replacement cost;

[0025] A main cover plate 6 and a sub-cover plate 7 are installed on the side wall of the cutter shaft sleeve 1. The main cover plate 6 and the sub-cover plate 7 are respectively located on both sides of the cutter shaft sleeve 1. The main cover plate 6 and the sub-cover plate 7 can clamp the gear sleeve 2;

[0026] A through groove 8 is opened on the side wall of the main cover plate 6. A bolt 9 is inserted and installed in the through groove 8. A nut 10 is inserted and installed on the inner side wall of the sub-cover plate 7. A through hole 11 is opened on the side wall of the positioning block 4. The bolt 9 can pass through the side wall of the positioning block 4 through the through hole 11 and be rotatably connected with the nut 10;

[0027] Through the arrangement of the main cover plate 6 and the sub-cover plate 7, the gear sleeve 2 can be prevented from displacing left and right on the cutter shaft sleeve 1, and by clamping the gear sleeve 2 with the main cover plate 6 and the sub-cover plate 7, the gear sleeve 2 can be closely attached together, making the connection of the gear sleeve 2 tighter and more stable.

[0028] Specifically, a rotation prevention mechanism 12 is arranged on the upper wall of the main cover plate 6. The rotation prevention mechanism 12 includes a threaded hole 13, a screw 14 and a rubber plug 15. A threaded hole 13 is opened on the upper wall of the main cover plate 6. The threaded hole 13 is communicated with the through groove 8. A screw 14 is rotatably installed in the threaded hole 13. The screw 14 can be attached to the side wall of the bolt 9. A rubber plug 15 is inserted and installed in the threaded hole 13;

[0029] By setting the anti-rotation mechanism 12, it can prevent the bolt 9 from loosening and affecting the stability of the gear sleeve 2, avoiding the situation of bolt loosening and gear sleeve 2 shaking. After the bolt 9 is tightened, the screw rod 14 can be rotated downward so that the lower end of the screw rod 14 holds against the bolt head of the bolt 9, thereby preventing the bolt 9 from rotating.

[0030] Specifically, a protective sleeve 16 is installed on the side wall of the auxiliary cover plate 7. The protective sleeve 16 is arranged outside the nut 10, and the bolt 9 can be inserted into the protective sleeve 16.

[0031] By setting the protective sleeve 16, it can prevent the bolt 9 from contacting the external coolant, avoid the bolt 9 from rusting, and avoid affecting the later disassembly of the gear sleeve 2.

[0032] Specifically, a keyway 17 is provided on the inner side wall of the cutter shaft sleeve 1.

[0033] By placing a connecting key in the keyway 17, after the external rotating shaft is inserted into the cutter shaft sleeve 1, it can drive the device to rotate.

[0034] Specifically, one end of a connecting rod 18 is installed on the side wall of the bolt head of the bolt 9, and the other end of the connecting rod 18 is installed with a conical rubber sleeve 19. The conical rubber sleeve 19 is sleeved outside the bolt head of the bolt 9, and the conical rubber sleeve 19 can block the through groove 8.

[0035] The function of the conical rubber sleeve 19 is the same as that of the protective sleeve 16, both of which are to avoid the bolt 9 from rusting and affecting the later disassembly of the gear sleeve 2.

[0036] Specifically, relief holes 20 are provided on the side walls of the main cover plate 6 and the auxiliary cover plate 7.

[0037] The relief holes 20 provide clearance for the rotating shaft inserted into the cutter shaft sleeve 1.

[0038] Working principle: When some of the cutter teeth 5 in this device are damaged, the staff can first disassemble this device from the external rotating shaft, then rotate the screw rod 14 in the anti-rotation mechanism 12 upward to release the locking of the bolt 9, then rotate the bolt 9 to take out the bolt 9 from the through hole 11, and remove the main cover plate 6 and the auxiliary cover plate 7, and then the damaged gear sleeve 2 can be removed and replaced.

[0039] It is obvious to those skilled in the art that this patent is not limited to the details of the above-mentioned exemplary embodiments, and that this patent can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, from any perspective, the embodiments should be regarded as exemplary and non-restrictive. The scope of this patent is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within this patent. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0040] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gear processing cutter head with a positioning groove, comprising a cutter shaft sleeve (1) and a gear sleeve (2), characterized in that: Both the upper and lower sides of the cutter shaft sleeve (1) are provided with positioning grooves (3). A positioning block (4) is installed on the inner side wall of the gear sleeve (2). The positioning block (4) is inserted and installed in the positioning groove (3). The gear sleeve (2) is sleeved outside the cutter shaft sleeve (1) through the cooperation of the positioning block (4) and the positioning groove (3). A cutter tooth (5) is installed on the outer side of the gear sleeve (2). The cutter teeth (5) are arranged in a spiral shape on the outside of the gear sleeve (2). A main cover plate (6) and a sub-cover plate (7) are installed on the side wall of the cutter shaft sleeve (1). The main cover plate (6) and the sub-cover plate (7) are respectively located on both sides of the cutter shaft sleeve (1). The main cover plate (6) and the sub-cover plate (7) can clamp the gear sleeve (2). A through groove (8) is opened on the side wall of the main cover plate (6). A bolt (9) is inserted and installed in the through groove (8). A nut (10) is inserted and installed on the inner side wall of the sub-cover plate (7). A through hole (11) is opened on the side wall of the positioning block (4). The bolt (9) can pass through the side wall of the positioning block (4) through the through hole (11) and is rotatably connected to the nut (10).

2. A gear machining cutter head with a positioning groove according to claim 1, characterized in that: A rotation prevention mechanism (12) is arranged on the upper wall of the main cover plate (6). The rotation prevention mechanism (12) includes a threaded hole (13), a screw rod (14) and a rubber plug (15). A threaded hole (13) is opened on the upper wall of the main cover plate (6). The threaded hole (13) communicates with the through groove (8). A screw rod (14) is rotatably installed in the threaded hole (13). The screw rod (14) can be attached to the side wall of the bolt (9). A rubber plug (15) is inserted and installed in the threaded hole (13).

3. A gear machining cutter head with a positioning groove according to claim 1, characterized in that: A protective sleeve (16) is installed on the side wall of the sub-cover plate (7). The protective sleeve (16) is arranged outside the nut (10). The bolt (9) can be inserted into the protective sleeve (16).

4. A gear machining tool bit with a positioning groove according to claim 1, wherein: A key groove (17) is opened on the inner side wall of the cutter shaft sleeve (1).

5. A gear machining cutter head with a positioning groove according to claim 1, characterized in that: One end of a connecting rod (18) is installed on the side wall of the bolt head of the bolt (9). The other end of the connecting rod (18) is installed with a conical rubber sleeve (19). The conical rubber sleeve (19) is sleeved outside the bolt head of the bolt (9). The conical rubber sleeve (19) can block the through groove (8).

6. The gear machining cutter head with a positioning groove according to claim 1, characterized in that: Relieving holes (20) are opened on the side walls of both the main cover plate (6) and the sub-cover plate (7).

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