Cutter shifting structure of hobbing cutter holder

Abstract

The utility model belongs to the field of machine tool machining, relates to a hobbing cutter holder cutter shifting structure, and introduces a gear rack transmission mechanism to replace a traditional ball screw transmission mode. According to the design, the precise speed reducer drives the gear to rotate, and the gear is tightly meshed with the rack fixed on the carriage, so that the precise tool channeling action of the tool rest is realized. According to the structure, the layout is more compact, the distance between the hob and the rotation face of the tool rest is effectively shortened, the rigidity of the tool rest is remarkably improved, vibration and deviation in the machining process are reduced, the machining precision is improved, and the service life of the tool is prolonged. Meanwhile, due to the flexibility of gear and rack transmission, the layout of the tool rest tool channeling structure is more diversified, the overall design is simplified, and the production cost is reduced. In addition, the structure further has the advantages of being easy and convenient to maintain, small in abrasion and the like, and downtime and maintenance cost are further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool processing and relates to the hobbing tool holder tool shifting structure. Background Art

[0002] This invention relates to the field of machining, specifically a technical improvement in the tool holder tracing structure of a gear hobbing machine. In gear hobbing, the tool holder's tracing motion is a crucial step in ensuring machining accuracy and efficiency. Traditional gear hobbing machine tool holder tracing typically employs a ball screw drive, converting the rotational motion of the screw and nut into linear motion, thereby driving the tool holder to traverse. However, this transmission method has significant limitations:

[0003] Limited layout: The ball screw drive method is limited by the size of the screw and nut, which greatly restricts the layout size of the tool holder and tool traversal structure, making it difficult to meet the needs of high-precision and high-efficiency machining.

[0004] Insufficient rigidity: Due to the characteristics of lead screw transmission, the tool holder is prone to vibration and displacement during tool movement, which affects machining accuracy and tool life, and also limits further improvement in machining speed.

[0005] High maintenance costs: The ball screw transmission system has a complex structure, is difficult to maintain, and is prone to wear. It requires regular replacement of parts, which increases production costs and downtime.

[0006] With the increasing demands for machining precision and efficiency in the manufacturing industry, the traditional tool holder and tool tracing structure of gear hobbing machines can no longer meet modern machining needs. Therefore, developing a new tool holder and tool tracing structure to improve tool holder rigidity, simplify structural layout, and reduce maintenance costs has become an urgent problem to be solved. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a gear hobbing tool holder traversing structure that uses a gear and rack transmission method to replace the traditional ball screw transmission method, thereby solving the existing problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a hobbing tool holder traversing structure, including a base, a reducer fixedly mounted on the base, and a slide plate disposed at the output end of the reducer; a rack is fixedly mounted on the slide plate and moves relative to the rotating surface of the tool holder; a gear is fixedly mounted on the reducer; the reducer drives the gear to rotate; the gear meshes with the rack to achieve the traversing action of the tool holder.

[0009] Optionally, the tool holder is also connected to a hob shaft for mounting the hob.

[0010] Optionally, a guide device may also be included to ensure the stability and accuracy of the slide during movement.

[0011] Optionally, the guide device is a linear guide or slide rail, installed between the slide and the base.

[0012] Optionally, the reducer is a precision reducer, which has high precision and high transmission efficiency to ensure the accuracy and stability of the cutter movement.

[0013] Optionally, the base is provided with mounting holes and locating pin holes to facilitate fixing the entire structure to the machine tool.

[0014] Optionally, a control system may also be included to control the speed and direction of the reducer, thereby achieving precise control of the cutter movement.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1) Improved tool holder rigidity: By adopting a gear and rack transmission method, the tool holder traversing structure of the present invention has a more compact layout, effectively shortening the distance between the hob shaft and the tool holder rotation surface, thereby significantly improving the rigidity of the tool holder. This structural improvement helps to reduce vibration and misalignment during machining, improving machining accuracy and tool life.

[0017] 2) Optimized structural layout: Compared with ball screw drives, rack and pinion drives can transmit motion and power between any two axes, making the layout of the tool holder and tool shifting structure more diverse and flexible. This layout optimization not only simplifies the structural design but also reduces production costs and maintenance difficulty.

[0018] 3) Improved machining efficiency: Due to the higher rigidity and more optimized layout of the tool holder and tool movement structure of this invention, faster and more stable tool movement can be achieved, thereby improving machining efficiency. This is especially important for high-volume, high-precision machining tasks.

[0019] 4) Reduced maintenance costs: Gear and rack transmission systems have a relatively simple structure, are easy to maintain, and experience less wear, thus reducing maintenance costs and downtime. This is significant for improving production efficiency and reducing production costs.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Reference numerals in the attached diagram: 1. rack; 2. gear; 3. reducer; 4. base; 5. slide plate; 6. tool holder rotating surface A; 7. hob shaft B. DETAILED DESCRIPTION

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Please see Figure 1 This is a hobbing tool holder with a traversing structure, including a base 4, a reducer 3, a slide 5, a rack 1, a gear 2, and a guide device, among other components.

[0028] The base 4 serves as the supporting foundation for the entire structure and is fixedly mounted on the machine tool. The reducer 3 is precision-manufactured, featuring high precision and high transmission efficiency, and is also fixedly mounted on the base 4. The slide 5 is located at the output end of the reducer 3 and is used to support and fix the rack 1.

[0029] The rack 1 is fixedly mounted on the slide 5 and moves relative to the rotating surface A of the tool holder. A gear 2 is fixedly mounted on the output shaft of the reducer 3. When the reducer 3 drives the gear 2 to rotate, the gear 2 meshes with the rack 1, thereby driving the slide 5 to move in a specific direction and realizing the tool holder's traversing action.

[0030] To ensure the stability and accuracy of the slide plate 5 during movement, this embodiment also includes a guiding device. The guiding device can be a linear guide rail or a slide rail, etc., and is installed between the slide plate 5 and the base 4 to guide and support the movement of the slide plate 5.

[0031] In addition, the tool holder in this embodiment is also connected to a hob shaft B for mounting a hob and performing gear hobbing. The base 4 is provided with mounting holes and locating pin holes to facilitate fixing the entire structure to the machine tool and ensure stability and accuracy during the machining process.

[0032] In operation, the gear hobbing tool holder and tool shifting structure of this utility model first sets the speed and direction of the reducer through the control system. Then, the reducer 3 starts working, driving the gear 2 on the output shaft to rotate. The gear 2 meshes with the rack 1 fixedly mounted on the slide 5, thereby driving the slide 5 to move in a specific direction.

[0033] The movement of the slide plate 5 causes the connected tool holder to perform a tool-shifting motion. At the same time, the guide device guides and supports the movement of the slide plate 5, ensuring the stability and accuracy of the tool-shifting motion.

[0034] During the hobbing process, the hob on the hob shaft B contacts the workpiece to perform gear hobbing. Because the tool holder hobbing structure of this embodiment has a compact layout, high rigidity, low maintenance cost, and high processing efficiency, it can meet the requirements of high-precision and high-efficiency machining.

[0035] This utility model adopts a gear and rack layout, which can shorten the distance between the tool holder rotation surface A and the hob shaft B, making the structure more compact and greatly improving the rigidity of the tool holder and the rigidity of the equipment.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gear hobbing tool holder with a tool shifting structure, characterized in that: Includes a base, a speed reducer fixedly mounted on the base, and a slide plate located at the output end of the speed reducer; A rack is fixedly installed on the slide and moves relative to the rotating surface of the tool holder. A gear is fixedly installed on the reducer. The reducer drives the gear to rotate, and the gear meshes with the rack to realize the tool holder's traversing action.

2. The hobbing tool holder tool shifting structure according to claim 1, characterized in that: The tool holder is also connected to a hob shaft for mounting the hob.

3. The hobbing tool holder tool shifting structure according to claim 1, characterized in that: It also includes a guide device to ensure the stability and accuracy of the slide during movement.

4. The hobbing tool holder tool shifting structure according to claim 3, characterized in that: The guiding device is a linear guide rail or slide rail, installed between the slide plate and the base.

5. The hobbing tool holder tool shifting structure according to claim 1, characterized in that: The reducer is a precision reducer with high accuracy and high transmission efficiency, ensuring the accuracy and stability of the cutting tool movement.

6. The hobbing tool holder tool shifting structure according to claim 1, characterized in that: The base is equipped with mounting holes and positioning pin holes, which makes it easy to fix the entire structure on the machine tool.

7. The hobbing tool holder tool shifting structure according to claim 1, characterized in that: It also includes a control system for controlling the speed and direction of the reducer to achieve precise control of the cutter movement.

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