A special cutter sleeve for processing outer gear teeth of a mining arc-tooth link chain ring

Abstract

The application provides a mining arc tooth link ring outer tooth processing tool sleeve, and a tool sleeve body for fixing a tool, wherein the tool sleeve body is in a hollow circular truncated cone shape, the tool sleeve body comprises an upper bottom surface, a middle part and a lower bottom surface, and the included angle between the side generatrix and the generatrix of the hollow circular truncated cone-shaped tool sleeve body is consistent with the angle of the link ring outer tooth, the tool sleeve body is installed on a rotating structure of a processing device through the lower bottom surface, and a working part of the tool faces the inside of the tool sleeve body. The mining arc tooth link ring outer tooth processing tool sleeve has the advantages that the tool sleeve body is designed in a hollow circular truncated cone shape, the included angle between the side generatrix and the generatrix of the hollow circular truncated cone-shaped tool sleeve body is consistent with the angle of the link ring outer tooth, the positioning of the link ring during tooth milling is more accurate, and the problem that the existing cylindrical tool sleeve body is difficult to accurately positioned during tooth milling is solved.

Description

Technical Field

[0001] This application belongs to the field of machining technology for the outer teeth of mining arc-tooth chain links, and relates to a special tool holder for machining the outer teeth of mining arc-tooth chain links. Background Technology

[0002] As an important component in the transmission structure of underground scraper conveyors in coal mines, the arc tooth connecting chain ring is a wear part that is frequently replaced and used in large quantities. Improving the quality and production efficiency of the connecting chain ring can reduce the frequency of scraper conveyor downtime, thereby increasing the coal mine's production capacity.

[0003] The structure of the arc-tooth chain link includes internal and external teeth, both of which are irregular in shape, making them difficult to machine. In existing technology, the machining tool holder for the external teeth of the mining arc-tooth chain link is cylindrical, with the machining tool mounted on it. When machining the irregular external teeth, the position and angle of the arc-tooth chain link blank need to be constantly adjusted. Because the blank needs to be continuously moved, using this type of tool holder to machine the external teeth of the mining arc-tooth chain link is not only inefficient but also results in poor machining quality and inconsistent external teeth. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of high positioning difficulty of the cylindrical tool holder body during gear milling in the prior art.

[0005] To achieve the above objectives, this application proposes a special tool holder for machining the external teeth of a mining arc-tooth chain link, comprising:

[0006] The tool holder body is used to fix the cutting tool. The tool holder body is in the shape of a hollow frustum. The tool holder body includes an upper bottom surface, a middle part and a lower bottom surface. The angle between the side generatrix and the generatrix of the hollow frustum-shaped tool holder body is consistent with the angle of the external teeth of the connecting ring. The tool holder body is installed on the rotating structure of the processing equipment through the lower bottom surface. The working part of the cutting tool faces the inside of the tool holder body.

[0007] In the existing technology, the cutter holder body is cylindrical. When machining the outer teeth of the mining arc tooth connecting chain ring, the surface of the cutter holder body cannot match the angle of the outer teeth. At this time, it is necessary to adjust the installation angle of the special tool so that the tool can machine the outer tooth surface of the connecting chain ring that meets the angle requirements.

[0008] The tool holder body of this application has a hollow frustum-shaped body where the angle between the side generatrix and the generatrix is ​​consistent with the angle of the external teeth of the connecting link. Simply installing a special tool onto the tool holder body ensures the precise positioning of the internal teeth of the connecting link during machining.

[0009] Furthermore, in order to accurately install the cutting tools, several rows of cutting tool mounting slots are provided in the middle of the tool holder body.

[0010] Furthermore, in order to install the tool more accurately, a positioning groove is also provided on one side of the mounting groove, and the tool mounting groove and the positioning groove are connected by a positioning hole of a threaded hole.

[0011] Furthermore, to further ensure the accuracy of the tool installation position, a limiting structure for limiting the bottom of the tool is also provided on one side of the tool installation slot.

[0012] Furthermore, in order to improve processing efficiency, the tool mounting groove and the positioning groove connected to the mounting groove are matched together to form a set, and several sets are evenly distributed along the circumference of the tool holder body.

[0013] Furthermore, in order to fix the tool holder on the machine tool, a fixing groove is provided on the lower bottom surface along the diameter of the lower bottom surface, and a through threaded hole parallel to the axis of the tool holder body is provided on the concave surface of the fixing groove parallel to the lower bottom surface. The tool holder body can be installed on the machine tool through the threaded hole.

[0014] Furthermore, in order to stably fix the tool holder on the machine tool, a threaded hole is provided on the lower bottom surface, and the threaded hole is distributed along the circumference of the lower bottom surface.

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

[0016] 1. The present application discloses a special tool holder for machining the outer teeth of a mining arc-tooth connecting ring. The special tool holder is designed as a hollow frustum-shaped outer trumpet shape. The angle between the side generatrix and the generatrix of the hollow frustum-shaped tool holder body is consistent with the angle of the outer teeth of the connecting ring. The positioning is more accurate and convenient during the milling process, so the required arc surface can be smoothly machined during the rotational machining process.

[0017] 2. The special tool holder of this application can simultaneously install multiple rows of special forming tools, which can simultaneously process multiple internal teeth of the arc toothed chain link. This method greatly improves processing efficiency.

[0018] 3. The tool holder body of this application has a fixing groove on its bottom surface. The fixing groove can further position the tool holder body itself, so as to accurately install the tool holder body on the machining tool according to the expected position. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a special tool sleeve for machining the outer teeth of a mining arc toothed chain ring in an embodiment of this application;

[0021] Figure 2 This is a front view of the special-purpose cutting tool used in the embodiments of this application;

[0022] Figure 3 blank for mining chain link half ring

[0023] Figure 4 Drawing of the finished product of half-ring of mining connecting chain.

[0024] Figure 5 This is a schematic diagram of the structure of a tool holder with a special tool installed in an embodiment of this application;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Tool holder body; 11. Upper bottom surface; 12. Middle part; 121. Mounting groove; 122. Positioning hole; 123. Positioning groove; 13. Lower bottom surface;

[0027] 2. Cutting tools; 21. Machining section; 22. Assembly section;

[0028] 3. Limiting structure. Detailed Implementation

[0029] The following will be combined with the appendix Figures 1-5 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figures 1-3 This application illustrates a special tool holder for machining the external teeth of a mining arc-tooth chain link, the tool holder comprising:

[0031] The tool holder body 1 is used to fix the tool 2. The tool holder body 1 is in the shape of a hollow frustum. The tool holder body 1 includes an upper bottom surface 11, a middle part 12 and a lower bottom surface 13. The angle between the side generatrix and the generatrix of the hollow frustum-shaped tool holder body 1 is consistent with the angle of the outer teeth of the connecting ring. The tool holder body 1 is installed on the rotating structure of the processing equipment through the lower bottom surface 13. The working part 21 of the tool 2 faces the inside of the tool holder body 1.

[0032] In the prior art, the shape of the cutter sleeve body 1 is cylindrical. Since the outer teeth of the arc-tooth connecting ring are irregular and have a certain tilt angle, the special cutter 2 installed on the upper part of the cutter sleeve body 1 needs to be precisely positioned when machining the outer teeth of the mining arc-tooth connecting ring. The positioning requirements are high. If the machining deviation is large, a large gap will appear when the arc-tooth part of the connecting ring is mated. Since the connecting ring will be continuously subjected to force during use, the gap caused by the machining error will increase the friction between the two half rings in the connecting ring, resulting in increased wear of the half rings and thus reducing the service life of the connecting ring.

[0033] Please refer to Figure 1 and Figure 3 In one embodiment of this application, the shape of the tool holder body 1 is a hollow frustum. Since the angle between the side generatrix and the generatrix of the hollow frustum-shaped tool holder body 1 is consistent with the angle of the outer teeth of the connecting ring, it is only necessary to install the special tool 2 on the tool holder body 1 to ensure the positioning accuracy of the inner teeth of the connecting ring during the processing, and to smoothly process the required arc surface during the rotation processing.

[0034] Furthermore, the middle part 12 of the tool holder body 1 is provided with several rows of tool mounting slots 121. Since the tool mounting slots 121 are evenly distributed along the circumferential surface of the middle part 12, the stability of the tool holder body 1 during rotation can be guaranteed.

[0035] Furthermore, a positioning groove 123 is also provided on one side of the mounting groove 121. The tool mounting groove 121 and the positioning groove 123 are connected by a positioning hole 122 of a threaded hole. By installing a bolt fastener in the positioning hole 122 and making the end of the bolt fastener abut against the surface of the tool mounted on the tool mounting groove 121, the tool can be limited.

[0036] Please refer to Figure 1 and Figure 2 Furthermore, a limiting structure 3 is provided on one side of the tool mounting groove 121 for limiting the bottom of the tool 2. During the processing, the tool holder body for processing is installed inside the tool holder body 1, and the mounting end connected to the tool holder body is embedded in the mounting groove 121. In order to ensure that the tool does not detach from the tool holder body during the processing of the connecting link, a limiting structure 3 is provided. Specifically, the end of the limiting structure 3 abuts against the surface of the mounting end to prevent the tool from detaching from the tool holder body 1 during the processing.

[0037] Optionally, the limiting structure 3 may be a bolt, or a combination of studs, nuts and washers.

[0038] Continue to refer to Figure 5Furthermore, the tool mounting groove 121 and the positioning groove 123 connected to the mounting groove 121 are matched to form a group, and several groups are evenly distributed along the circumference of the tool holder body 1. In actual use, more tools can be mounted on the tool holder body 1, increasing its efficiency in processing the connecting ring. The evenly installed tools can ensure the stability of the rotation of the tool holder body 1 during processing, thereby ensuring the accuracy of processing the connecting ring.

[0039] Furthermore, a fixing groove 14 is provided on the lower bottom surface 13 along the diameter of the lower bottom surface, and a through threaded hole parallel to the axis of the tool holder body 1 is provided on the concave surface of the fixing groove 14 parallel to the lower bottom surface 13, so that the tool holder body 1 can be installed on the machining tool through the threaded hole.

[0040] Furthermore, a threaded hole is provided on the lower bottom surface 13, and the threaded hole is distributed along the circumference of the lower bottom surface 13. The threaded hole is evenly distributed along the circumference, which can ensure that the tool holder body 1 is evenly stressed after being installed on the machine tool using bolt fasteners, and ensure that the rotation centerline of the tool holder body 1 is consistent with the center of the rotation axis of the machine tool, thereby ensuring the service life of the tool holder body 1.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A special tool holder for machining the outer teeth of a mining arc-tooth chain link, characterized in that, include: The tool holder body (1) is used to fix the tool (2). The tool holder body (1) is in the shape of a hollow frustum. The tool holder body (1) includes an upper bottom surface (11), a middle part (12) and a lower bottom surface (13). The angle between the side generatrix and the generatrix of the hollow frustum-shaped tool holder body (1) is consistent with the angle of the outer teeth of the connecting ring. The tool holder body (1) is installed on the rotating structure of the processing equipment through the lower bottom surface (13). The working part (21) of the tool (2) faces the inside of the tool holder body (1). The middle part (12) of the tool holder body (1) is provided with several rows of tool mounting slots (121); a limiting structure (3) for limiting the bottom of the tool (2) is also provided on one side of the tool mounting slot (121). The end of the limiting structure (3) abuts against the surface of the mounting end connected to the tool holder body (1) to prevent the tool (2) from detaching from the tool holder body (1) during processing. A positioning groove (123) is also provided on one side of the mounting groove (121), and the tool mounting groove (121) and the positioning groove (123) are connected by a positioning hole (122) of a threaded hole; The tool mounting groove (121) and the positioning groove (123) connected to the mounting groove (121) are matched together to form a group, and several groups are evenly distributed along the circumference of the tool sleeve body (1). The lower bottom surface (13) has a fixed groove (14) distributed along the diameter of the lower bottom surface, and a through threaded hole parallel to the axis of the tool holder body (1) is opened on the concave surface of the fixed groove (14) parallel to the lower bottom surface (13). The tool holder body (1) can be installed on the machining machine tool through the threaded hole. The lower bottom surface (13) has a threaded hole that passes through the lower bottom surface (13), and the threaded hole is distributed along the circumference of the lower bottom surface (13).

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