Special cutter sleeve for machining inner teeth of mining arc tooth connecting chain ring

Abstract

The special cutter sleeve comprises a cutter body, a cutter handle, a clamp and a special cutter, the cutter body in the shape of an externally-contracted trumpet is mounted on the cutter handle, the cake-shaped clamp is mounted at the joint of the cutter body and the cutter handle, three rows of cutter head mounting grooves and three rows of positioning grooves are formed in the surface of the cutter body in the shape of the externally-contracted trumpet, and the cutter head mounting grooves are communicated with the positioning grooves. Each row of tool bit installation grooves and the positioning grooves are matched to form a group, four groups of tool bit installation grooves are evenly distributed along the circumference of the tool body, and 12 tool bits can be installed in all. According to the mining arc tooth connecting chain ring inner arc machining cutter sleeve, the cutter body is designed to be in the outward-contracting horn shape, and the opening angle of the horn shape is consistent with the angle of the tooth portion of the connecting chain ring, so that the connecting chain ring can be more accurately positioned in the tooth milling process, and the problem that in the prior art, a cylindrical cutter body is difficult to accurately position in the tooth milling process is solved.

Description

Technical Field

[0001] The utility model relates to a special tool sleeve for processing inner teeth of arc-toothed chain rings for mining. Background Art

[0002] Arc tooth connecting chain ring is an important part in the transmission structure of scraper conveyor in coal mines. It is a vulnerable part during use, with a high replacement frequency and large usage. Improving the quality and production efficiency of the connecting chain ring can reduce the frequency of scraper conveyor shutdown, thereby increasing the production capacity of coal mines.

[0003] The prior art discloses a utility model patent, the name of which is: a special tool for processing flat link links of round link chains for mining, and the publication number is: CN2075568U. The utility model patent includes a tool handle, a tool head, a tool body, a mounting hole, a positioning hole and a positioning screw, wherein the tool body is cylindrical.

[0004] However, the cylindrical cutter body in the patent application specification is inconsistent with the arc tooth angle of the mining chain link. In the actual processing of the milling process, the positioning requirements for the cutter and the blank are relatively high. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that it is difficult to position a cylindrical cutter body when milling teeth.

[0006] In order to achieve the above-mentioned purpose, the present application proposes a special tool sleeve for processing the inner teeth of the arc-toothed chain ring for mining, comprising: a tool body, a tool handle, a clamp, a tool head mounting groove, a positioning groove, a positioning hole and a special tool. As an improvement of the above-mentioned tool body of the present application, the shape of the tool body is an outward-retracted trumpet shape, and the tool body includes an open end, a contraction part and an end. The contraction angle of the contraction part of the tool body is consistent with the angle of the tooth part of the chain ring. By only installing the special tool on the tool body, the positioning accuracy of the inner teeth of the chain ring during the processing can be guaranteed, and the required arc surface can be smoothly processed during the rotation processing.

[0007] Furthermore, the open end of the knife body is mounted on the knife handle, and the open end of the knife body is the larger end. This connection method increases the contact area between the knife body and the knife handle, makes the connection more stable, and reduces the risk of the knife falling off.

[0008] Furthermore, a pancake-shaped clamp is installed at the junction of the cutter body and the handle, which plays a role in further fixing and stabilizing the cutter body. With the support of the clamp, the connection between the cutter body and the handle is tighter, ensuring stability and safety during the processing.

[0009] Furthermore, three rows of cutter head mounting grooves and three rows of positioning grooves are provided on the surface of the contraction portion of the cutter body. Each row of cutter head mounting grooves and the positioning grooves are matched to form a group. There are four groups evenly distributed along the circumference of the cutter body. A total of 12 cutter heads can be installed. This layout ensures that the three inner teeth of the arc tooth chain ring can be processed simultaneously during the processing, thereby improving the processing efficiency and making the force on the cutter head uniform.

[0010] Furthermore, a positioning hole of a threaded hole penetrates between the tool head mounting groove and the positioning groove. When the special tool is installed, a hexagon socket bolt passes through the positioning hole, thereby achieving a stable fixation of the special tool.

[0011] As an improvement of the above-mentioned blade body of the present application, the end of the blade body that is not adjacent to the contraction portion is an arc-shaped structure, which can avoid cuts and damages caused by sharp edges.

[0012] The two sides of the clamp are provided with fixing grooves. When the cutter body is installed, two positioning blocks are installed at the fixing grooves on the two sides of the clamp to realize the positioning of the cutter body.

[0013] The special tool comprises a processing part and a mounting part. A fixing hole is opened on the surface of the mounting part. The mounting part is embedded in the tool head mounting groove. The fixing hole and the positioning hole are connected by a stud to realize the installation of the special tool.

[0014] The beneficial effects of this application are:

[0015] 1. The present application discloses a special tool sleeve for processing the inner teeth of a mining arc-toothed connecting chain ring. The special tool sleeve is designed to be in an "outward-retracted trumpet shape". The opening angle of the trumpet shape is consistent with the angle of the connecting chain ring tooth portion, and the positioning is more accurate during the tooth milling process. Therefore, the required arc surface can be smoothly processed during the rotation processing.

[0016] 2. The "outward-retracted trumpet-shaped" knife body of the present application has a larger open end, which increases the contact area with the knife handle, making the knife connection more stable and reducing the risk of falling off.

[0017] 3. The special tool set of the present application can simultaneously install 3 rows of 12 special forming knives in total, and can simultaneously process the three internal teeth of the arc tooth connecting chain ring. This method greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of a special tool sleeve for processing inner teeth of arc-toothed chain rings for mining in an embodiment of the present application;

[0020] Figure 2 This is a structural diagram of the clamp in the embodiment of the present application;

[0021] Figure 3 This is a front view of a special tool in an embodiment of the present application;

[0022] Figure 4 For mining chain link half ring blank

[0023] Figure 5 The finished product picture of the mining chain link half ring

[0024] Description of reference numerals:

[0025] 1. blade body; 11. opening end; 12. contraction part; 13. end;

[0026] 2. Knife handle;

[0027] 3. Fixture;

[0028] 4. Cutting head installation slot;

[0029] 5. Positioning hole;

[0030] 6. Positioning slot;

[0031] 7. Special tool; 71. Processing department; 72. Installation department. DETAILED DESCRIPTION

[0032] The following will be combined with the attached Figures 1 to 3 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figures 1 to 3 The present invention illustrates a special tool sleeve for processing the inner teeth of a mining arc toothed chain ring, which includes: a tool body 1, a tool handle 2, a fixture 3, a tool head mounting groove 4, a positioning groove 6, a positioning hole 5 and a special tool 7. In one embodiment of the present invention, the tool body 1 is used to install the special tool 7. The tool head mounting groove 4 on the tool body 1 embeds the mounting portion 72 on the special tool 7 therein, while the processing portion 71 is exposed outside the tool body 1. The positioning groove 6 on the tool body 1 is provided with a positioning hole 5 that is connected to the tool head mounting groove 4. The positioning hole 5 is connected to the fixing hole on the special tool 7 by tightening a stud to position and fix the special tool 7. The tool handle 2 fixes the device on the machine tool through the fixture 3.

[0034] In the prior art, the shape of the cutter body 1 is cylindrical. Since the shape of the inner teeth of the arc-tooth connecting chain ring is irregular and the inner teeth have a certain inclination angle, the special tool 7 installed on the upper part of the cutter body 1 needs to accurately position the angle of the tool when processing the inner teeth of the arc-tooth connecting chain ring for mining. The positioning requirement is high. If the processing deviation is large, the service life of the connecting chain ring will be reduced.

[0035] In one embodiment of the present application, the shape of the blade body 1 is an outward-retracted trumpet shape, and the blade body 1 includes an open end 11, a contraction portion 12 and a terminal end 13. The contraction angle of the contraction portion 12 of the blade body is consistent with the angle of the tooth portion of the chain connecting ring. By simply installing the special tool 7 on the blade body 1, the positioning accuracy of the inner teeth of the chain connecting ring during the processing can be guaranteed, and the required arc surface can be smoothly processed during the rotation processing.

[0036] Continue to refer to Figure 1 In a further embodiment, the open end 11 of the knife body 1 is a larger end. This connection method increases the contact area between the knife body 1 and the knife handle 2, making the connection more stable and reducing the risk of the knife falling off.

[0037] Continue to refer to Figure 2 The round pancake-shaped fixture 3 is installed at the junction of the cutter body 1 and the handle 2. It plays a role in further fixing and stabilizing the cutter body. With the support of the fixture, the connection between the cutter body and the handle is tighter, ensuring stability and safety during the processing.

[0038] Continue to refer to Figure 1 The surface of the contraction portion 12 of the cutter body 1 is provided with 3 rows of cutter head installation grooves 4 and 3 rows of positioning grooves 6. Each row of cutter head installation grooves 4 and positioning grooves 6 form a group, and 4 groups are evenly distributed along the circumference of the cutter body 1, and a total of 12 cutter heads can be installed. In the processing process, this layout can simultaneously drive the rotation of the cutter sleeve to rotate the 3 rows of special cutters on the cutter body 1, so as to simultaneously process the three inner teeth of the arc tooth connecting chain ring, thereby improving the processing efficiency and making the cutter head evenly stressed.

[0039] Continue to refer to Figure 1 The positioning hole 5 of the threaded hole penetrates the tool head installation groove 4 and the positioning groove 6. When the special tool is installed, the hexagon socket bolt passes through the positioning hole to achieve a stable fixation of the special tool.

[0040] Further, continue to refer to Figure 1 The end of the end 13 of the blade body 1 that is not adjacent to the contraction portion 12 is an arc-shaped structure. This arc-shaped structure can avoid cuts and damage caused by sharp corners.

[0041] Continue to refer to Figure 2, fixing grooves are provided on both sides of the clamp 3. When installing the cutter body, two positioning blocks are installed at the fixing grooves on both sides of the clamp and are tightened and connected with studs to realize the positioning of the cutter body.

[0042] Continue to refer to Figure 3 The special tool 7 includes a processing portion 71 and a mounting portion 72, and a fixing hole is opened on the surface of the mounting portion 72. The mounting portion is embedded in the tool head mounting groove, and the fixing hole and the positioning hole are connected by a stud to realize the installation of the special tool, and the processing portion 71 is exposed on the outer surface of the tool body 1.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A special tool sleeve for processing inner teeth of arc toothed chain rings for mining, characterized in that: include: A knife body (1), a knife handle (2), a clamp (3), a knife head mounting groove (4), a positioning groove (6), a positioning hole (5) and a special knife (7); the knife body (1) is in the shape of an outwardly contracted trumpet; the knife body (1) comprises an open end (11), a contracted portion (12) and a terminal end (13); the open end (11) of the knife body (1) is mounted on the knife handle (2); and the disc-shaped clamp (3) is mounted at the junction of the knife body (1) and the knife handle (2).

2. A special tool sleeve for processing inner teeth of arc toothed chain rings for mining according to claim 1, characterized in that: The surface of the contraction portion (12) of the blade body (1) is provided with three rows of blade head mounting grooves (4) and three rows of positioning grooves (6), each row of blade head mounting grooves (4) and positioning grooves (6) are matched to form a group, and four groups are evenly distributed along the circumference of the blade body (1), so that a total of 12 blade heads can be installed.

3. The special tool sleeve for processing inner teeth of arc tooth connecting chain ring for mining according to claim 1 is characterized in that: The cutter head mounting groove (4) and the positioning groove (6) are connected by a threaded positioning hole (5).

4. The special tool sleeve for processing inner teeth of arc toothed chain rings for mining according to claim 1 is characterized in that: The end portion of the distal end (13) of the blade body (1) that is not adjacent to the contraction portion (12) is an arc-shaped structure.

5. The special tool sleeve for processing inner teeth of arc tooth connecting chain ring for mining according to claim 1 is characterized in that: The clamp (3) has fixing grooves on both sides.

6. The special tool sleeve for processing inner teeth of arc toothed chain rings for mining according to claim 1 is characterized in that: The special tool (7) comprises a processing portion (71) and a mounting portion (72), and a fixing hole is provided on the surface of the mounting portion (72).

Images