A t-shaped rigid skimming device for a gear hobbing machine

Abstract

The utility model discloses a kind of T-shaped rigid scraping device of gear hobbing machine, comprising: the connecting seat of installation on gear hobbing machine, rotatable and the vertical column of up and down motion is installed on the connecting seat, the horizontal installation of vertical column end portion has tool holder, the position of tool body can be adjusted by setting adjustable vertical column, rely on the screw hole reserved on machine tool, through the mutual combination of connecting seat, vertical column, tool holder and tool body and other 4 kinds of simple parts, through adjusting vertical column up and down and rotation, and the front and rear movement of tool body and other actions, gear part end face produced by burr can be scraped clean quickly. The vertical column of the utility model mechanism and tool body seat, tool body are simple in processing, light in weight, convenient to adjust, and the adjustment range is larger, so that the applicability of the device is wider, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gear hobbing technology, and in particular to a T-shaped rigid scraping device for a gear hobbing machine. Background Technology

[0002] With the widespread adoption of CNC high-efficiency gear hobbing machines, the shift output of gear hobbing processes is increasing. However, a large number of burrs are generated on the lower end face of the parts during the hobbing process, making burr removal particularly important. To solve the burr problem in the hobbing process, the YK3132 gear grinding machine comes with a scraping mechanism. However, due to its large size and limited space in the hobbing machine, it easily interferes with the assembly and disassembly of the hobbing fixture. In addition, the built-in scraping mechanism has poor rigidity, is difficult to adjust, and its performance is insufficient to meet processing requirements. For these reasons, the built-in mechanism is idle and cannot be used. After the parts are hobbed, operators need to manually remove burrs using a scraper. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies, the purpose of this utility model is to provide a T-shaped rigid scraping device for a gear hobbing machine.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A T-shaped rigid scraping device for a gear hobbing machine includes: a connecting seat mounted on the gear hobbing machine, a rotatable and vertically movable column mounted on the connecting seat, a tool holder horizontally mounted at the end of the column, and a tool body mounted at the front end of the tool holder.

[0006] The connecting seat has an inner hole and a horizontal semi-groove, which divides the connecting seat into upper and lower parts. The lower part is equipped with a column, and the upper part is a ring-shaped surrounding structure. The interface of the surrounding structure is equipped with clamping bolts for clamping the column after adjusting its position.

[0007] The end of the column has a horizontal inner hole, and the tool holder is installed in the horizontal inner hole.

[0008] The end of the column is provided with a mounting base, and the horizontal inner hole is horizontally opened in the mounting base. The mounting base is equipped with positioning screws for fixing the tool holder.

[0009] The outer circumference of the tool holder is provided with a guide groove that cooperates with the positioning screw.

[0010] The front end of the tool holder is provided with a tool groove for mounting the tool body, and the tool body is fixed in the tool groove by screws.

[0011] The front and upper cutting surfaces of the blade are provided with a front angle and a rear angle.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention provides a T-shaped rigid scraping device for a gear hobbing machine. By setting an adjustable column, the position of the cutter body can be adjusted. Relying on pre-drilled screw holes on the machine tool, it combines four simple parts—a connecting seat, a column, a cutter holder, and the cutter body—to quickly and cleanly scrape away burrs from the lower end face of gear parts by adjusting the column's up-and-down movement and rotation, and the cutter body's forward and backward movement. The column, cutter holder, and cutter body of this invention are simple to manufacture, lightweight, easy to adjust, and have a wide adjustment range, making the device more applicable and reducing costs. Furthermore, when changing the gear hobbing fixture or when the mechanism is not in use, the cutter holder and cutter body can be quickly and easily retracted or directly removed. Additionally, if the cutter body becomes dull during use and needs regrinding, quick disassembly and reassembly can be achieved, and cutter body regrinding does not require specialized equipment. This device solves the problem of the mismatch between the processing efficiency of high-efficiency CNC gear hobbing machines and manual deburring, and has good practicality. In addition, the device does not take up space, has a simple structure, and can be integrated with gear hobbing machine tools. It uses the power of the table rotation to automatically remove burrs from the lower end face of gear parts during the operation of the equipment, saving labor costs and time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the T-shaped rigid scraping device of the gear hobbing machine of this utility model;

[0015] Figure 2 This is a schematic diagram of the column structure of the T-shaped rigid scraping device of the gear hobbing machine of this utility model;

[0016] Figure 3 This is a schematic diagram of the T-shaped rigid scraping device tool holder structure of the gear hobbing machine of this utility model;

[0017] Figure 4 This is a schematic diagram of the T-shaped rigid scraping device mounting body structure of the gear hobbing machine of this utility model.

[0018] In the figure, 1—connecting seat; 2—column; 3—tool holder; 4—positioning screw; 5—tool body; 6—mounting seat; 7—inner hole; 8—horizontal half-groove; 9—guide groove; 10—horizontal inner hole; 11—upper part; 12—lower part; 51—tool groove. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0020] like Figure 1As shown, this utility model provides a T-shaped rigid scraping device for a gear hobbing machine, including: a connecting seat 1 on the gear hobbing machine, a rotatable and vertically adjustable column 2 installed on the connecting seat 1, a tool holder 3 horizontally installed at the end of the column 2, and a tool body 5 installed at the front end of the tool holder 3.

[0021] The connecting seat 1 is installed on the right side of the gear hobbing machine table, relying on the five M10 screw holes on the YK3132 or YK3150 series machine tool, which facilitates worker operation.

[0022] Specifically, the connecting seat 1 has an inner hole 7 and a horizontal semi-groove 8, dividing it into upper and lower parts 11 and 12. The lower part 12 is used to position and install a column 2, while the upper part 11 is an annular surrounding structure. Clamping bolts 13 are installed at the interface of the surrounding structure to clamp the column 2 after adjusting its position. In this invention, the inner hole 7 is divided into upper and lower parts by the horizontal semi-groove 8. The lower part mainly serves a positioning function, while the upper part, through two screw holes, ensures the column 2 is clamped within the inner hole 7, controlling its rotation and vertical adjustment. The outer circle of the column 2 is installed within the inner hole 7 of the connecting seat 1, allowing it to rotate freely around the center of the hole and move up and down within it. The length of the column 2 determines the upper and lower scraping range of the entire mechanism.

[0023] like Figure 2 , 3 As shown, the end of the column 2 has a horizontal inner hole 10, and the tool holder 3 is installed in the horizontal inner hole 10. Preferably, the end of the column 2 is provided with a mounting base 6, the horizontal inner hole 10 is horizontally opened in the mounting base 6, and a positioning screw 4 for fixing the tool holder 3 is installed on the mounting base 6. The outer circle of the tool holder 3 is installed in the horizontal hole of the column 2, and can move left and right along the center of the horizontal inner hole 10 of the column to adjust the scraping range.

[0024] In this utility model, such as Figure 3 As shown, the outer circle of the tool holder 3 has a guide groove 9 that mates with the positioning screw 4. The front end of the tool holder 3 has a tool groove 51 for mounting the tool body 5, and the tool body 5 is fixed in the tool groove 51 by screws. The keyway 9 on the outer circle of the tool holder 3 is mainly used for positioning and guiding. The tool groove 51 at the left end of the tool holder is used to mount the tool body 5, and the screw hole on the side is used to lock the tool body 5 to ensure that the tool body (5) does not loosen during operation. The tool holder 3 and the tool body 5 can be retracted or directly removed when not in use, which is not likely to cause interference. The locking positioning screw 4 is located in the screw hole at the upper end of the column 2, and the lower end has a positioning outer circle that fits with the horizontal positioning groove 9 on the outer circle of the tool holder 3 with a small clearance to ensure the forward and backward movement accuracy of the tool holder 3, while ensuring accurate positioning of the tool body and preventing rotation.

[0025] In this utility model, such as Figure 4 As shown, the cutting edge 5 has a front angle and a back angle on its front and upper cutting edges. The cutting edge 5 is made of W18Cr4V square steel bar, which is easy to manufacture and grind. It is installed in the tool groove 51 on the right end of the tool holder 3. One side of the cutting edge 5 is in close contact with the side of the tool groove 51, and the other side is fixed in the groove by two screws. The cutting edge can be machined and ground on a surface grinder, which is convenient to operate.

[0026] The working process of this utility model is as follows:

[0027] In use, the T-shaped burr scraping mechanism is fixed to the machine tool by screws through the pre-drilled holes of the gear hobbing machine. The column 2 is installed in the inner hole 7 of the connecting seat. The vertical position of the column is adjusted according to the height of the positioning surface of the gear hobbing fixture. After the height of the column 2 is determined, it is locked by two hexagon socket screws on the connecting seat 1. Wrench screws can also be used, but hexagon socket screws are used to reduce interference. The tool holder 3 is horizontally installed in the horizontal inner hole 10 at the upper end of the column 2. The front and rear position of the tool holder 3 is adjusted according to the bottom diameter of the gear being processed. The position of the tool groove 51 on the tool holder 3 is determined by the positioning screw 4 and the keyway 9 on the outer circle of the tool holder 3. The tool body 5 is installed in the tool groove 51 of the tool holder 3, with one side in close contact with the side of the tool groove 51, and the other side fixed in the tool groove 51 by two screws.

[0028] After the entire burr scraping mechanism is installed and aligned, the machine tool start-up table begins to rotate. Once the gear hobbing machine is in normal operation, as the hob feeds downwards, burrs are generated at the lower end of the gear parts due to the influence of the material and the cutting tool. Since the scraping mechanism is installed on the opposite side of the hob, it relies on the rotation of the machine tool table to drive the hobbing fixture and the gear being processed to rotate continuously. The burrs generated by the gear will be continuously scraped off by the cutting tool of the scraping mechanism.

[0029] It will be apparent to those skilled in the art that the above specific examples are merely preferred embodiments of this utility model. Therefore, any improvements or modifications that those skilled in the art may make to certain parts of this utility model still embody the principles of this utility model and achieve its purpose, and all fall within the scope of protection of this utility model.

Claims

1. A T-shaped rigid scraping device for a gear hobbing machine, characterized in that, include: A connecting seat (1) is installed on a gear hobbing machine. A column (2) that can rotate and move up and down is installed on the connecting seat (1). A tool holder (3) is horizontally installed at the end of the column (2). A tool body (5) is installed at the front end of the tool holder (3). An inner hole (7) is opened on the connecting seat (1). A horizontal half groove (8) is provided on the connecting seat (1), dividing the connecting seat (1) into upper and lower parts (11, 12). The column (2) is positioned and installed on the lower part (12). The upper part (11) is a ring-shaped surrounding structure. A clamping bolt (13) for clamping the column (2) after adjusting its position is installed at the interface of the surrounding structure.

2. The T-shaped rigid scraping device for a gear hobbing machine according to claim 1, characterized in that, The end of the column (2) is provided with a horizontal inner hole (10), and the knife holder (3) is installed in the horizontal inner hole (10).

3. The T-shaped rigid scraping device for a gear hobbing machine according to claim 2, characterized in that, The end of the column (2) is provided with a mounting base (6), the horizontal inner hole (10) is horizontally opened in the mounting base (6), and the mounting base (6) is provided with a positioning screw (4) for fixing the tool holder (3).

4. The T-shaped rigid scraping device for a gear hobbing machine according to claim 3, characterized in that, The outer circle of the tool holder (3) is provided with a guide groove (9) that cooperates with the positioning screw (4).

5. The T-shaped rigid scraping device for a gear hobbing machine according to claim 1 or 2, characterized in that, The front end of the tool holder (3) is provided with a tool groove (51) for installing the tool body (5), and the tool body (5) is fixed in the tool groove (51) by screws.

6. The T-shaped rigid scraping device for a gear hobbing machine according to claim 1, characterized in that, The front and upper cutting surfaces of the blade body (5) are provided with a front angle and a rear angle.

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