Replaceable hobbing cutter

Abstract

The utility model relates to the technical field of gear machining, in particular to a replaceable hobbing cutter which comprises a rolling shaft set, the rolling shaft set comprises a first rolling shaft and a second rolling shaft which are arranged at the two ends, a first detachable connecting shaft is installed at the right side end of the first rolling shaft, and a second detachable connecting shaft is installed at the right side end of the second rolling shaft. A first detachable connecting shaft is installed at the left side end of the first rolling shaft, a second detachable connecting shaft is installed at the left side end of the second rolling shaft, a middle installation sleeve is installed between the first detachable connecting shaft and the second detachable connecting shaft, and a hobbing cutter is installed outside the middle installation sleeve. The hobbing cutter comprises a plurality of groups of hobbing units which are circumferentially arrayed along the outer wall of the middle mounting sleeve, each group of hobbing units are the same in structure, each hobbing unit comprises a hobbing part and a connecting buckle, the hobbing part is mounted on the connecting buckle, and the two sides of the connecting buckle are tightly buckled on the two sides of the middle mounting sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to a replaceable gear hobbing tool. Background Art

[0002] A gear hobbing machine is a machine tool specially used for gear processing. It uses a hob to process spur, helical and herringbone cylindrical gears according to the development method. In addition to cutting spur and helical cylindrical gears, the gear hobbing machine can also process worm gears, sprockets, etc. When using special hobs, it can also process workpieces with various special tooth shapes such as splines and sprockets. The most important component on a gear hobbing machine is the gear hobbing tool. During the processing, the gear hobbing tool will move on the workpiece and rotate continuously at a high speed, contacting the workpiece surface for cutting operations, and cutting the raw workpiece into a gear shape.

[0003] At present, a Chinese patent with announcement number CN220372378U discloses a gear hobbing tool for toothed plate processing, which includes a tool body and a plurality of cutting teeth arranged on the periphery of the tool body. The periphery of the tool body is divided into a plurality of processing areas arranged at intervals. The cutting teeth are distributed in each processing area along the length direction of the tool body, and the cutting teeth on two adjacent processing areas are axially staggered.

[0004] Although this gear hobbing tool can cut different positions on the toothed plate in different processing areas by axially offsetting the cutting teeth on two adjacent processing areas, and the tooth density formed on the toothed plate is greater, the tooth shape is smaller, and the tooth shape accuracy of the workpiece is higher, this gear hobbing tool cannot flexibly replace the tool head. After the gear hobbing is worn out due to processing for a long time, the entire tool can only be replaced as a whole, which brings additional economic expenditure and replacement cost. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a replaceable gear hobbing tool, and the above technical purpose is achieved through the following technical solutions:

[0006] A replaceable gear hobbing tool comprises a roller group, the roller group comprises a first roller and a second roller arranged at two ends, the right end of the first roller is installed with a first detachable connecting shaft, the left end of the second roller is installed with a second detachable connecting shaft, an intermediate mounting sleeve is installed between the first detachable connecting shaft and the second detachable connecting shaft, a gear hobbing tool is installed on the outside of the intermediate mounting sleeve, the gear hobbing tool comprises a plurality of groups of gear hobbing units arranged in a circular array along the outer wall of the intermediate mounting sleeve, each group of gear hobbing units has the same structure, the gear hobbing unit comprises a gear hobbing portion and a connecting buckle, the gear hobbing portion is installed on the connecting buckle, and the two sides of the connecting buckle are fastened to the two sides of the intermediate mounting sleeve.

[0007] Furthermore, the gear rolling unit also includes a fixed base, an insertable movable plate, and a gear rolling. The fixed base is welded and fixed to the upper end of the connecting buckle. The interior of the fixed base is provided with an insertion groove opened from right to left. The insertable movable plate is slidably inserted into the interior of the fixed base. The gear rolling is fixed to the upper end of the insertable movable plate. The gear rolling is assembled and fixed to the upper part of the fixed base following the insertable movable plate.

[0008] Furthermore, the gear rolling unit also includes a connecting rod, a connecting plate, and a limit block, the limit block is placed on one side of the fixed base, the connecting plate is fixedly welded to the upper end of the left side of the limit block, the connecting rod is fixedly welded to the left side of the connecting strip, and the other side of the connecting strip is fixedly welded to the right side of the inserted movable plate, the lower end surface of the limit block is tightly attached to the upper end surface of the fixed base, and the interior of the limit block is provided with a limit hole that penetrates up and down, and the interior of the middle mounting sleeve is embedded with an electrically controlled locking rod, and the electrically controlled locking rod is correspondingly arranged below the installation position of the limit hole.

[0009] Furthermore, a limit block is fixedly embedded inside the middle mounting sleeve, a limit slot is provided inside the limit block, and mounting strips matching the shape of the limit slot are installed inside the first detachable connecting shaft and the second detachable connecting shaft, and the mounting strips are inserted into the limit block.

[0010] Furthermore, four groups of fastening strips are fixedly welded on the periphery of the mounting strip, and the fastening strips are placed in the inner space of the first detachable connecting shaft and the second detachable connecting shaft.

[0011] Furthermore, a central limiting block is fixedly provided at the central position of the limiting clamping block.

[0012] In summary, the utility model has the following beneficial effects:

[0013] The utility model provides the gear hobbing tool with the functions of being detachable and installable. After the gear hobbing body is worn out due to long-term work, the damaged gear hobbing can be easily replaced to ensure the accuracy of gear hobbing processing. At the same time, the whole module can be split into three parts. On the shaft structure, if a situation that affects the rotation processing of the gear hobbing tool is encountered, it can also be replaced. The whole module has high flexibility, is convenient for maintenance and replacement of accessories, and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 It is an oblique view of the utility model;

[0016] Figure 2 This utility model Figure 1 The enlarged schematic diagram of point A in the middle;

[0017] Figure 3 It is an exploded schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the fastening strip of the utility model.

[0019] In the figure, 1. first roller; 2. second roller; 3. first detachable connecting shaft; 4. second detachable connecting shaft; 5. middle mounting sleeve; 6. center limit block; 7. connecting buckle; 8. fixed base; 9. plug-in movable plate; 10. rolling gear; 11. connecting rod; 12. connecting plate; 13. limit block; 14. electric locking rod; 15. limit card block; 16. mounting strip; 17. fastening strip. DETAILED DESCRIPTION

[0020] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 4 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0021] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings. Example

[0022] A replaceable gear rolling module 10 includes a roller group, the roller group includes a first roller 1 and a second roller 2 placed at both ends, a first detachable connecting shaft 3 is installed on the right end of the first roller 1, and a second detachable connecting shaft 4 is installed on the left end of the second roller 2, an intermediate mounting sleeve 5 is installed between the first detachable connecting shaft 3 and the second detachable connecting shaft 4, and a gear rolling module 10 is installed on the outside of the intermediate mounting sleeve 5. The gear rolling module 10 includes a plurality of groups of gear rolling units 10 arranged in a circular array along the outer wall of the intermediate mounting sleeve 5, and each group of gear rolling units 10 has the same structure. The gear rolling unit 10 includes a gear rolling part and a connecting buckle 7. The gear rolling part 10 is installed on the connecting buckle 7, and the two sides of the connecting buckle 7 are fastened to the two sides of the intermediate mounting sleeve 5.

[0023] The gear hobbing 10 unit also includes a fixed base 8, an insertable movable plate 9, and a gear hobbing 10. The fixed base 8 is welded and fixed to the upper end of the connecting buckle 7. The interior of the fixed base 8 is provided with an insertion groove opened from right to left. The insertable movable plate 9 is slidably inserted into the interior of the fixed base 8. The gear hobbing 10 is fixed to the upper end of the insertable movable plate 9. The gear hobbing 10 is assembled and fixed to the upper part of the fixed base 8 following the insertable movable plate 9.

[0024] The gear rolling unit 10 also includes a connecting rod 11, a connecting plate 12, and a limit block 13. The limit block 13 is placed on one side of the fixed base 8. The connecting plate 12 is fixedly welded to the upper left end of the limit block 13. The connecting rod 11 is fixedly welded to the left side of the connecting strip. The other side of the connecting strip is fixedly welded to the right side of the inserted movable plate 9. The lower end surface of the limit block 13 is tightly attached to the upper end surface of the fixed base 8, and the interior of the limit block 13 is provided with a limit hole that passes through from top to bottom. An electrically controlled locking rod 14 is embedded in the interior of the middle mounting sleeve 5, and the electrically controlled locking rod 14 is correspondingly arranged below the installation position of the limit hole.

[0025] A limit block 15 is fixedly embedded inside the middle mounting sleeve 5, a limit slot is provided inside the limit block 15, and a mounting strip 16 matching the shape of the limit slot is installed inside the first detachable connecting shaft 3 and the second detachable connecting shaft 4, and the mounting strip 16 is inserted into the limit block 15.

[0026] Four sets of fastening strips 17 are fixedly welded to the periphery of the mounting strip 16 , and the fastening strips 17 are placed in the inner space between the first detachable connecting shaft 3 and the second detachable connecting shaft 4 .

[0027] A central limiting block 6 is fixedly provided at the central position of the limiting block 15 .

[0028] In the implementation mode of the present invention, the entire gear hobbing 10 module can be easily disassembled and installed. Since the gear hobbing 10 module needs to play an important role in the gear processing process for a long time, the gear hobbing 10 on its surface is prone to serious wear. When it needs to be replaced, the entire module needs to be removed first, and the first detachable connecting shaft 3 and the second detachable connecting shaft 4 are separated. After separation, the entire module is divided into three parts. At this time, the wear degree of the first roller 1, the second roller 2 and the middle installation sleeve 5 can be checked in turn. If there are parts that affect the rotation of the module, they can be replaced in time. Secondly, it is necessary to control The electric control locking rod 14 is retracted to disengage the limiting hole on the limiting block 13, and the gear rolling 10 is pulled out from the fixed base 8 one by one and replaced. The installation steps are opposite to the disassembly steps, but the principles are the same. The first detachable connecting shaft 3 and the second detachable connecting shaft 4 are positioned and inserted into the middle mounting sleeve 5 to ensure that the entire module rotates synchronously as a whole. At the same time, since the gear rolling 10 module needs to be installed in the machine equipment after the installation is completed, the first roller 1 and the second roller 2 will squeeze the middle mounting sleeve 5 from both sides to the middle, and there will be no problem of structural looseness during operation.

[0029] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A replaceable gear hobbing tool, characterized in that: The invention comprises a roller group, wherein the roller group comprises a first roller (1) and a second roller (2) arranged at two ends, a first detachable connecting shaft (3) being installed at the right end of the first roller (1), a second detachable connecting shaft (4) being installed at the left end of the second roller (2), an intermediate installation sleeve (5) being installed between the first detachable connecting shaft (3) and the second detachable connecting shaft (4), a gear hobbing (10) module being installed outside the intermediate installation sleeve (5), the gear hobbing (10) module comprising a plurality of groups of gear hobbing (10) units arranged in a circumferential array along the outer wall of the intermediate installation sleeve (5), each group of gear hobbing (10) units having the same structure, the gear hobbing (10) unit comprising a gear hobbing (10) part and a connecting buckle (7), the gear hobbing (10) part being installed on the connecting buckle (7), and the two sides of the connecting buckle (7) being fastened to the two sides of the intermediate installation sleeve (5).

2. The replaceable gear hobbing tool according to claim 1, characterized in that: The gear hobbing (10) unit further comprises a fixed base (8), an insertable movable plate (9), and a gear hobbing (10); the fixed base (8) is welded and fixed to the upper end of the connecting buckle (7); an insertion groove extending from right to left is provided inside the fixed base (8); the insertable movable plate (9) is slidably inserted into the fixed base (8); the gear hobbing (10) is fixed to the upper end of the insertable movable plate (9); and the gear hobbing (10) is assembled and fixed to the upper part of the fixed base (8) following the insertable movable plate (9).

3. The replaceable gear hobbing tool according to claim 2, characterized in that: The gear hobbing (10) unit further comprises a connecting rod (11), a connecting plate (12), and a limit block (13); the limit block (13) is disposed on one side of the fixed base (8); the connecting plate (12) is fixedly welded to the upper left end of the limit block (13); the connecting rod (11) is fixedly welded to the left side of the connecting strip; the other side of the connecting strip is fixedly welded to the right side of the inserted movable plate (9); the lower end surface of the limit block (13) is in close contact with the upper end surface of the fixed base (8); and a limit hole is provided in the interior of the limit block (13) which penetrates from top to bottom; an electrically controlled locking rod (14) is embedded in the interior of the intermediate mounting sleeve (5); and the electrically controlled locking rod (14) is correspondingly arranged below the mounting position of the limit hole.

4. The replaceable gear hobbing tool according to claim 3, characterized in that: A limiting block (15) is fixedly embedded in the interior of the intermediate installation sleeve (5), a limiting slot is provided in the interior of the limiting block (15), and a mounting strip (16) matching the shape of the limiting slot is installed in the interior of the first detachable connecting shaft (3) and the second detachable connecting shaft (4), and the mounting strip (16) is inserted into the interior of the limiting block (15).

5. The replaceable gear hobbing tool according to claim 4, characterized in that: Four groups of fastening strips (17) are fixedly welded on the periphery of the installation strip (16), and the fastening strips (17) are placed in the internal space of the first detachable connecting shaft (3) and the second detachable connecting shaft (4).

6. The replaceable gear hobbing tool according to claim 5, characterized in that: A central limiting block (6) is fixedly provided at the central position of the limiting clamping block (15).

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