Rv plus double bond positioning transmission mechanism

Abstract

The utility model provides a kind of RV adds double key positioning transmission mechanism, it is related to tool magazine technical field, including motor, the motor output end is installed RV speed reducer, the RV speed reducer output end is installed transmission shaft, driven wheel is installed on the transmission shaft by bearing, the axial side of driven wheel is provided with sprocket gland, the sprocket gland is fixedly connected with transmission shaft by positioning key, and the sprocket gland is fixedly connected with driven wheel, for the power transmission of transmission shaft is passed to driven wheel;The utility model adopts RV speed reducer and the transmission scheme of double positioning key combination;RV speed reducer itself has the characteristics of high rigidity, high accuracy, can realize accurate reduction ratio;Double key positioning structure effectively enhances the connection rigidity and circumferential positioning accuracy between transmission shaft and sprocket gland, avoids the skidding error in traditional belt drive or the return gap of gear transmission;This makes power transmission more accurate and reliable, ensures the stability and accuracy of tool magazine tool changing process.

Description

Technical Field

[0001] This utility model relates to the field of tool magazine technology, and in particular to an RV plus double-key positioning transmission mechanism. Background Technology

[0002] As an important component of CNC machine tools, the importance of chain tool magazines is self-evident.

[0003] In automated machining, the tool magazine is responsible for storing and changing different types of tools to meet machining needs, which greatly improves machining efficiency. With the development of CNC machining technology, the market has higher requirements for the transmission system of the tool magazine, including higher transmission accuracy and more compact space design. Although traditional gear transmission and belt transmission perform well in some aspects, they also have obvious limitations in practical applications.

[0004] First, traditional gear drives require a large overall size when facing large reduction ratios, which is a huge challenge for space-constrained CNC machine tools. Second, although belt drives are relatively compact in size, they are prone to large errors during transmission, requiring additional error feedback mechanisms for correction, which undoubtedly increases the complexity and cost of the system. Neither of these two transmission methods can fully meet the requirements of modern CNC machine tools for compact space and high-precision transmission.

[0005] Based on the above-mentioned shortcomings, we propose an RV plus double-key positioning transmission mechanism. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an RV-plus-double-key positioning transmission mechanism to overcome the problems of large space occupation and low transmission accuracy in chain-type tool magazines.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An RV-type double-key positioning transmission mechanism includes a motor, an RV reducer installed at the output end of the motor, a drive shaft installed at the output end of the RV reducer, a drive wheel mounted on the drive shaft via bearings, a sprocket cover provided on one axial side of the drive wheel, the sprocket cover being fixedly connected to the drive shaft via positioning keys, and the sprocket cover being fixedly connected to the drive wheel, for transmitting power from the drive shaft to the drive wheel.

[0009] Furthermore, a drive wheel bearing housing is provided below the drive wheel, and the bearing is supported on the drive wheel bearing housing.

[0010] Furthermore, the number of bearings is two, and the two bearings are arranged vertically along the axial direction to support the drive wheel.

[0011] Furthermore, the bearing includes an upper bearing and a lower bearing, and a bearing cap is installed on the outer side of the upper bearing to limit the axial movement of the bearing.

[0012] Furthermore, there are two positioning keys, symmetrically arranged at the connection between the drive shaft and the sprocket cover, for achieving tight positioning and power transmission.

[0013] Furthermore, the drive wheel is used to drive the chain to achieve the tool changing action of the tool magazine.

[0014] Furthermore, the drive shaft is fixed to the output end of the RV reducer via a key connection or a flange connection.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. High transmission precision and smooth operation: This utility model adopts a transmission scheme combining an RV reducer and a double positioning key. The RV reducer itself has the characteristics of high rigidity and high precision, which can achieve a precise reduction ratio. The double-key positioning structure effectively enhances the connection rigidity and circumferential positioning accuracy between the transmission shaft and the sprocket cover, avoiding the slippage error in traditional belt drives or the backlash in gear drives. This makes the power transmission more precise and reliable, ensuring the smoothness and accuracy of the tool changer process, thereby improving the overall machining efficiency and quality of CNC machine tools.

[0017] 2. Compact structure and high space utilization: Compared with traditional gear transmissions that require multi-stage gear meshing to achieve a large reduction ratio, resulting in a bulky structure, this utility model can achieve a large speed ratio and high torque in a single-stage transmission through a highly integrated RV reducer; the overall layout of the mechanism is compact and the axial dimension is small, which significantly reduces the space ratio of the transmission system in the chain tool magazine, making it particularly suitable for small CNC machine tools with strict limitations on installation space, thus enhancing the market adaptability of the product. Attached Figure Description

[0018] Figure 1 A plan view of the overall structure of an RV-type double-key positioning transmission mechanism provided by this utility model;

[0019] Figure 2 A planar anatomical diagram of the overall structure of an RV-type double-key positioning transmission mechanism provided by this utility model;

[0020] Figure 3 A top view of the overall structure of an RV-type double-key positioning transmission mechanism provided by this utility model.

[0021] Legend: 1. Motor;

[0022] 2. RV reducer;

[0023] 3. Drive shaft;

[0024] 4. Drive wheel bearing housing;

[0025] 5. Bearings;

[0026] 6. Bearing gland;

[0027] 7. Sprocket cover;

[0028] 8. Positioning key;

[0029] 9. Drive wheel. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Example

[0035] like Figure 1-3 As shown, this utility model provides a specific embodiment of an RV-type double-key positioning transmission mechanism:

[0036] Example 1

[0037] This RV double-key positioning transmission mechanism includes a motor 1 as a power source. The output end of the motor 1 is directly connected to the input end of the RV reducer 2. The RV reducer 2 is used to increase the output torque and reduce the speed. The output end of the RV reducer 2 is fixedly installed with a transmission shaft 3 through a key connection (or optional flange connection) to output power outward.

[0038] A drive wheel 9 is mounted on the drive shaft 3 via a set of bearings 5. This drive wheel 9 is used to directly drive the chain of the tool magazine. A sprocket cover 7 is provided on one axial side (usually the outer side) of the drive wheel 9. The sprocket cover 7 is circumferentially fixed to the drive shaft 3 by two positioning keys 8, so that it rotates synchronously with the drive shaft 3. At the same time, the sprocket cover 7 is fixedly connected to the drive wheel 9 by fasteners such as screws. In this way, the rotational power of the drive shaft 3 can be transmitted to the sprocket cover 7 through the positioning keys 8, and then drive the drive wheel 9 to rotate synchronously.

[0039] Example 2 is a further refinement of Example 1. To ensure support stability, a drive wheel bearing seat 4 is provided below the drive wheel 9, and the bearing 5 is supported on the drive wheel bearing seat 4.

[0040] Preferably, there are two bearings 5, which are arranged vertically along the axial direction of the transmission shaft 3 to jointly support the drive wheel 9, forming a stable double support structure that effectively resists radial force.

[0041] In order to precisely control the axial position of the bearing and eliminate clearance, a bearing cover 6 is installed on the outer side of the upper bearing 5. The bearing cover 6 is fixed to the drive wheel bearing seat 4 by bolts to limit the axial movement of the bearing 5.

[0042] As before, there are two positioning keys 8, which are symmetrically arranged at the connection between the drive shaft 3 and the sprocket cover 7. This double-key layout can balance the force, achieve tighter positioning and more reliable power transmission, and avoid the circumferential clearance that may be generated by the single-key structure.

[0043] Ultimately, the drive wheel 9 transmits the received rotational power to the chain it meshes with, thereby precisely driving the tool magazine to complete the tool changing action.

[0044] When using the RV-type double-key positioning transmission mechanism of this utility model, its working process is as follows:

[0045] First, the CNC machine tool control system issues a tool change command, and motor 1 is powered on and starts to generate the initial rotational power;

[0046] Subsequently, the output power of motor 1 is transmitted to RV reducer 2. After RV reducer 2 reduces the power and significantly increases the output torque, it drives the transmission shaft 3 at its output end to rotate.

[0047] Next, the rotational motion of the drive shaft 3 is precisely transmitted to the sprocket cover 7 through two symmetrically arranged positioning keys 8. Since the sprocket cover 7 is fixedly connected to the drive wheel 9, the power is synchronously transmitted to the drive wheel 9.

[0048] During this process, the two bearings 5 ​​supported by the drive wheel bearing housing 4 ensure the smoothness and coaxiality of the rotation of the drive wheel 9, while the bearing cover 6 prevents the axial movement of the entire transmission assembly and ensures the stability of operation.

[0049] Finally, the precisely driven drive wheel 9 drives the chain of the tool magazine to move, transporting the target tool to the tool change position, thus completing the entire tool change action efficiently and smoothly.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An RV-type double-key positioning transmission mechanism, comprising a motor (1), characterized in that: An RV reducer (2) is installed at the output end of the motor (1), and a drive shaft (3) is installed at the output end of the RV reducer (2). A drive wheel (9) is installed on the drive shaft (3) via a bearing (5). A sprocket cover (7) is provided on one axial side of the drive wheel (9). The sprocket cover (7) is fixedly connected to the drive shaft (3) via a positioning key (8), and the sprocket cover (7) is fixedly connected to the drive wheel (9) to transmit the power of the drive shaft (3) to the drive wheel (9).

2. The RV plus double-key positioning transmission mechanism according to claim 1, characterized in that: A drive wheel bearing seat (4) is provided below the drive wheel (9), and the bearing (5) is supported on the drive wheel bearing seat (4).

3. The RV-type double-key positioning transmission mechanism according to claim 1, characterized in that: The number of bearings (5) is two, and the two bearings (5) are arranged vertically along the axial direction to support the drive wheel (9).

4. The RV plus double-key positioning transmission mechanism according to claim 2, characterized in that: The bearing (5) includes an upper bearing (5) and a lower bearing (5). A bearing cap (6) is installed on the outside of the upper bearing (5) to limit the axial movement of the bearing (5).

5. The RV-type double-key positioning transmission mechanism according to claim 1, characterized in that: The number of positioning keys (8) is two, symmetrically arranged at the connection between the drive shaft (3) and the sprocket cover (7), for achieving tight positioning and power transmission.

6. The RV-type double-key positioning transmission mechanism according to claim 1, characterized in that: The drive wheel (9) is used to drive the chain to achieve the tool changing action of the tool magazine.

7. The RV plus double-key positioning transmission mechanism according to claim 1, characterized in that: The drive shaft (3) is fixed to the output end of the RV reducer (2) by a key or a flange connection.

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