A device for honing the inner hole of a wear-resistant pipe

Abstract

The application relates to the technical field of broaching forming devices, in particular to a wear-resistant pipe hole broaching forming device. In the process of broaching the pipe workpiece, a broaching auxiliary assembly is arranged to clean the front-end scraps of the broaching tool and the broaching position of the pipe workpiece, that is, the driving motor, the driving gear disc and the transmission outer gear ring provide rotary motion to drive the cleaning brush structure to clean; the scrap cleaning process replaces manual cleaning by workers, reduces the burden of operators, and has a positive effect on improving the broaching processing benefit; wherein the position of the bearing body is regulated through the arranged positioning structure, so that the scrap cleaning work in the pipe workpiece processing process can be better adapted, and the work flexibility is high; in addition, the cleaning brush in the cleaning brush structure is inserted and installed through the installation plug plate and the installation insertion cavity, and the cleaning brush is convenient to disassemble, and is convenient for subsequent disassembly, cleaning and replacement and maintenance.

Description

Technical Field

[0001] This invention relates to the field of broaching forming equipment technology, and in particular to a broaching forming equipment for wear-resistant pipe inner bores. Background Technology

[0002] Wear-resistant pipes are special industrial pipes designed for transporting abrasive materials. They are widely applicable to high-wear conditions in mining, power, and metallurgy industries. Their core features are high wear resistance, impact resistance, and corrosion resistance, and their service life is much longer than that of ordinary carbon steel pipes.

[0003] Pipe inner hole broaching is an efficient process that uses a multi-tooth broach to complete the rough, semi-finish, and finish machining of pipe inner holes in one go, and is suitable for batch high-precision through hole machining scenarios.

[0004] A broach is a multi-tooth forming tool with progressively increasing dimensions. It moves at a constant speed in a straight line through a pipe with a pre-drilled bottom hole, and the broach teeth remove excess material layer by layer in sequence. All machining can be completed in one pass without the need for multiple processes and repeated clamping.

[0005] For the internal broaching of pipes, it is confirmed that the pipe to be processed is a through hole that meets the requirements. Pre-drilling is completed in advance to ensure that the bottom hole size is suitable for the broach guide section. Then, the broach guide section is inserted into the pre-drilled hole of the pipe to complete the reliable connection between the broach and the broaching machine, and the normal operating status of the equipment is confirmed. Start the broaching machine and control the broach to complete a single linear pass at a set uniform speed. The remaining material is removed sequentially by the broach's teeth increasing in size. Roughing, semi-finishing, and finishing are completed simultaneously in one pass. During the broaching process, a special coolant with good fluidity is continuously supplied to fully remove cutting heat and prevent chips from clogging the broach's chip grooves.

[0006] For broaching the inner bore of relatively short wear-resistant pipes, horizontal broaching equipment is generally used. A hydraulic drive device drives the broaching tool to broach the inner bore of the pipe. During this process, although most of the machining debris is carried to the debris collection box behind the broaching tool, a small amount of debris still remains in front of the broaching tool and the workpiece. In the existing technology, the operator usually cleans it with a brush, which wastes manpower and increases the burden on the operator.

[0007] To address these issues, this invention proposes a wear-resistant pipe inner hole broaching forming device. Summary of the Invention

[0008] The purpose of this invention is to provide a wear-resistant pipe inner hole broaching forming device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant pipe inner hole broaching forming device, comprising a support frame and a chip receiving box disposed at the bottom of the support frame; A drive hydraulic cylinder and a guide rod are provided on the inner side of the support frame. A tool clamping component is provided at the drive end of the drive hydraulic cylinder, and a broaching tool is clamped at the front end of the tool clamping component. The broaching tool performs broaching on the tubular workpiece mounted on the outside of the support frame, and a coolant spray pipe for cooling the broaching tool is also provided on the outer wall of the support frame. A broaching auxiliary component for cleaning up debris is also provided on the side of the tube workpiece.

[0010] Preferably, the broaching auxiliary assembly includes an annular loading box and a fixing foot provided on the side of the annular loading box, the fixing foot being fixed to the support frame by bolts; A connector and a receiving cavity communicating with the annular loading box are also provided on one side of the annular loading box. An external gear ring for transmission is provided in the annular loading box.

[0011] Preferably, a limiting ring cover is fixed to the top of the annular loading box by screws, and a protruding plate is provided on one side of the limiting ring cover; A drive motor is provided on the convex plate, which is connected to a drive gear disk, and the drive gear disk is adapted to mesh with the transmission external gear ring.

[0012] Preferably, the broaching auxiliary assembly further includes a chip cleaning assembly disposed on the transmission outer gear ring; The debris cleaning assembly includes fixed strips that are equidistantly fixed on the external gear ring of the transmission; A limit groove is provided along the length of the fixed strip; The debris cleaning assembly also includes a carrier, and a limiting slider that is adapted to and slidably connected to the limiting groove is fixedly installed at the bottom end of the carrier; The carrier is positioned using a positioning structure.

[0013] Preferably, the positioning structure includes positioning slots that are equidistantly arranged in a straight line on the fixed strip and a threaded cavity that penetrates the carrier. The screw cavity is provided with a positioning pin that is adapted to and engages with the positioning slot, and a cylindrical handle is fixedly installed at one end of the positioning pin.

[0014] Preferably, rotating auxiliary protrusions are also provided at equal intervals on the top edge of the cylindrical handle.

[0015] Preferably, a cleaning brush structure is also provided at the front end of the carrier.

[0016] Preferably, the cleaning brush structure includes a mounting cavity disposed at the front end of the carrier; The mounting cavity is adapted to be inserted into one end of the mounting plate, and a cleaning brush for cleaning debris is also provided at the front end of the mounting plate.

[0017] Preferably, a first positioning magnetic block is also embedded in the mounting cavity; and a second positioning magnetic block that attracts the first positioning magnetic block is also embedded at the tail end of the mounting plate.

[0018] Preferably, the cleaning brush, the carrier, and the fixing strip are arranged in the same number of groups, and the fixing strip is arranged in a ring at equal intervals on the transmission outer gear ring.

[0019] Compared with the prior art, the beneficial effects of the present invention are: The wear-resistant pipe inner hole broaching forming device designed in this invention includes a support frame and a chip receiving box set at the bottom of the support frame; a driving hydraulic cylinder and a guide rod are arranged on the inner side of the support frame, a tool clamping component is arranged at the driving end of the driving hydraulic cylinder, and a broaching tool is clamped at the front end of the tool clamping component; the broaching tool performs broaching processing on the pipe workpiece installed on the outer side of the support frame, and a coolant spray pipe for cooling the broaching tool is also arranged on the outer wall of the support frame; wherein a broaching auxiliary component for cleaning chips is also arranged at the side position where the pipe workpiece is installed. During the broaching process of the tube workpiece, a broaching auxiliary component is set up to clean the front end of the broaching tool and the tube workpiece broaching position. In other words, the drive motor, drive gear plate and transmission external gear ring provide rotational motion to drive the cleaning brush structure to clean. This debris cleaning process replaces manual cleaning by the staff, reduces the burden on the operators, and has a positive effect on improving the efficiency of broaching. The positioning structure is designed to adjust the position of the carrier, which means that the position of the cleaning brush structure can be adjusted, thus better adapting to the cleaning of debris during the processing of the tube workpiece, and making the work highly flexible. In addition, the cleaning brush in the cleaning brush structure is installed by inserting the mounting plate into the mounting cavity, which makes it easy to disassemble and facilitates subsequent disassembly, cleaning, replacement and maintenance. In other words, align the tail end of the mounting plate with the mounting cavity, insert the mounting plate into the mounting cavity, and finally position it by the mutual attraction between the first positioning magnet and the second positioning magnet. This completes the installation of the cleaning brush, making the operation convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structural connection of the wear-resistant pipe inner hole broaching forming device of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of this invention at point A; Figure 3 This is an exploded view of the structure and connection of the broaching auxiliary component of the present invention; Figure 4 for Figure 3 The structural diagram of the invention is shown at point B in the middle; Figure 5 This is a schematic diagram of the connection between the carrier, positioning structure, and cleaning brush structure of the present invention before the explosion. Figure 6 for Figure 5 A schematic diagram of the structure of this invention is shown at point C; Figure 7 This is a schematic diagram of the connection between the carrier, positioning structure, and cleaning brush structure of the present invention after an explosion. Figure 8 for Figure 7 A schematic diagram of the structure of this invention is shown at point D. Figure 9 This is a schematic diagram of the connection between the mounting plate and the replacement component structure of the present invention at the tail end; Figure 10 This is a schematic diagram of the connection head of the mounting plate and replacement component structure of the present invention; Figure 11 for Figure 10 The schematic diagram of the invention is shown at point E in the middle.

[0021] In the diagram: 1. Support frame; 2. Waste receiving box; 3. Drive hydraulic cylinder; 4. Tool clamping assembly; 5. Guide rod; 6. Broaching tool; 7. Tubular workpiece; 8. Coolant spray pipe; 901. Annular loading box; 902. Fixing foot; 903. Connector; 904. Transmission external gear ring; 905. Receiving cavity; 906. Limiting ring cover; 907. Protruding plate; 908. Drive motor; 909. Drive gear disc; 1001. Fixing strip; 1002. Limiting groove; 1003. Limiting slider; 1004, bearing body; 1101, positioning slot; 1102, screw cavity; 1103, positioning screw; 1104, cylindrical handle; 1105, rotating auxiliary protrusion; 1201, mounting cavity; 1202, first positioning magnet; 1203, mounting plate; 1204, second positioning magnet; 1205, cleaning brush; 1301, damping rod; 1302, bearing plate; 1303, cleaning brush; 1304, scraper cone; 1305, through hole body. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-8 A wear-resistant pipe inner hole broaching forming device includes a support frame 1 and a chip receiving box 2 disposed at the bottom of the support frame 1; a driving hydraulic cylinder 3 and a guide rod 5 are disposed on the inner side of the support frame 1, a tool clamping component 4 is disposed at the driving end of the driving hydraulic cylinder 3, and a broaching tool 6 is clamped at the front end of the tool clamping component 4; the broaching tool 6 performs broaching processing on the pipe workpiece 7 installed on the outer side of the support frame 1, and a coolant spray pipe 8 for cooling the broaching tool 6 is also disposed on the outer wall of the support frame 1; A broaching auxiliary component for cleaning debris is also provided on the side of the installation tube workpiece 7.

[0024] According to the appendix Figure 1 -Appendix Figure 4 As shown, during the broaching process of the tube workpiece 7, the broaching auxiliary component cleans the debris at the front end of the broaching position of the broaching tool 6 and the tube workpiece 7. That is, the drive motor 908, drive gear plate 909 and transmission external gear ring 904 provide rotational motion to drive the cleaning brush structure to clean. This debris cleaning process replaces manual cleaning by the operator, reduces the burden on the operator, and has a positive effect on improving the efficiency of broaching.

[0025] Combined with the appendix Figure 5 -Appendix Figure 8 As shown, the position of the carrier 1004 is adjusted by the positioning structure, which means that the position of the cleaning brush structure can be adjusted, so as to better adapt to the cleaning of debris during the processing of the tube workpiece 7, and the operation is highly flexible.

[0026] In addition, the cleaning brush 1205 in the cleaning brush structure is installed by inserting the mounting plate 1203 into the mounting cavity 1201, which makes it easy to disassemble and facilitates subsequent disassembly, cleaning, replacement and maintenance.

[0027] The broaching auxiliary assembly includes an annular loading box 901 and a fixing foot 902 on the side of the annular loading box 901, which is fixed to the support frame 1 by bolts; a connecting body 903 is also provided on one side of the annular loading box 901, and a receiving cavity 905 communicating with the annular loading box 901 is provided in the connecting body 903; a transmission external gear ring 904 is provided in the annular loading box 901; a limit ring cover 906 is fixed to the top of the annular loading box 901 by screws, and a protruding plate body 907 is provided on one side of the limit ring cover 906; a drive motor 908 is provided on the protruding plate body 907, which is connected to a drive gear plate 909, and the drive gear plate 909 is adapted to mesh with the transmission external gear ring 904; the broaching auxiliary assembly also includes a chip cleaning assembly provided on the transmission external gear ring 904.

[0028] That is, the drive motor 908 drives the drive gear plate 909 to mesh with the transmission outer gear ring 904, which in turn drives the chip cleaning component set on the transmission outer gear ring 904 to perform circumferential motion, and finally drives the cleaning brush 1205 to clean the residual chips at the front end of the machining position of the tool clamping part 4 and the tube workpiece 7, so as to avoid affecting the broaching process. The cleaned chips fall into the chip receiving box 2. The cleaning brush 1205, the carrier 1004, and the fixing strip 1001 are set in the same number of groups. The fixing strip 1001 is set in a ring at equal intervals on the transmission outer gear ring 904.

[0029] Furthermore, while cleaning the debris at the broaching location of the tube workpiece 7 by cleaning brush 1205, it also provides a uniform coating effect for the coolant sprayed from the coolant nozzle 8 to that location, which means that the coolant makes more sufficient contact with the broaching tool 6.

[0030] From the appendix Figure 2 As shown, the coolant sprayed from the coolant nozzle 8 will concentrate in the upper part of the broaching tool 6 where it performs broaching on the tube workpiece 7. Relying solely on its natural flow is slow. If more coolant nozzles 8 are installed, the coolant usage will be greater. Therefore, the cleaning brush 1205, which makes a circular motion, can apply coolant to the annular sidewall of the broaching tool 6 to ensure its cooling effect and usage efficiency.

[0031] In other words, the cleaning brush 1205, which moves in a circular motion, and the coolant spray nozzle 8 work together in a coordinated manner. On the one hand, the cleaning brush 1205, which moves in a circular motion, can increase the distribution range of the coolant sprayed from the coolant spray nozzle 8 to ensure its cooling effect. On the other hand, the coolant sprayed from the coolant spray nozzle 8 also has a flushing and cleaning effect on the debris and other impurities adhering to the cleaning brush 1205.

[0032] Then from the appendix Figure 5 -Appendix Figure 8 As shown, the use of the debris cleaning assembly includes a fixed strip 1001 that is equidistantly fixed on the transmission outer gear ring 904; and a limit groove 1002 is provided along the length direction of the fixed strip 1001.

[0033] The debris cleaning assembly also includes a carrier 1004, and a limiting slider 1003 that is adapted to and slidably connected to the limiting slide groove 1002 is fixedly provided at the bottom end of the carrier 1004; the carrier 1004 is positioned by the provided positioning structure.

[0034] The positioning structure includes positioning slots 1101 that are equidistantly arranged in a straight line on the fixed strip 1001 and a threaded cavity 1102 that penetrates the carrier 1004; the threaded cavity 1102 is threadedly connected to a positioning pin 1103 that is adapted to engage with the positioning slot 1101, and a cylindrical handle 1104 is fixedly provided at one end of the positioning pin 1103; and rotating auxiliary protrusions 1105 are also equidistantly arranged on the top side of the cylindrical handle 1104.

[0035] In other words, when it is necessary to adjust and position the carrier 1004, its position is adjusted by sliding the limiting slider 1003 in the limiting groove 1002. After the position of the carrier 1004 is adjusted, that is, after the position of the cleaning brush 1205 is adjusted, the carrier 1004 is positioned by rotating the cylindrical handle 1104 so that its bottom end is engaged with the positioning slot 1101 at the corresponding position on the fixed strip 1001. The position adjustment of the cleaning brush 1205 is then completed.

[0036] In addition, during the rotation of the positioning screw 1103, this solution also provides a rotation auxiliary protrusion 1105 on the end side wall of the cylindrical handle 1104. The purpose is to facilitate the operator's tightening or loosening operation, so that the position adjustment and positioning of the cleaning brush 1205 can be completed quickly without the need for external auxiliary tools, thereby improving its ease of operation.

[0037] The cleaning brush structure provided at the front end of the carrier 1004 includes a mounting cavity 1201 at the front end of the carrier 1004; the mounting cavity 1201 is adapted to be inserted into one end of the mounting plate 1203; a cleaning brush 1205 for cleaning debris is also provided at the front end of the mounting plate 1203; a first positioning magnet 1202 is also embedded in the mounting cavity 1201; and a second positioning magnet 1204 that attracts the first positioning magnet 1202 is also embedded at the rear end of the mounting plate 1203.

[0038] In other words, the 1205 cleaning brush needs to be replaced after prolonged use to ensure its cleanliness and avoid affecting its ability to clean up debris.

[0039] Simply hold the mounting plate 1203 with your hand and pull it outward until the mutual attraction between the first positioning magnet 1202 and the second positioning magnet 1204 is released, and the mounting plate 1203 is separated from the mounting cavity 1201. This completes the disassembly of the cleaning brush 1205.

[0040] When installing the new cleaning brush 1205, align the tail end of the mounting plate 1203 with the mounting cavity 1201, insert the mounting plate 1203 into the mounting cavity 1201, and finally position it by the mutual attraction between the first positioning magnet 1202 and the second positioning magnet 1204. The installation of the cleaning brush 1205 can then be completed, which is convenient to operate.

[0041] To improve the efficiency of the cleaning brush 1205, after initial use (i.e., when the front end of the cleaning brush 1205 is damaged or dirty), the broken or contaminated part can be cut off. Then, the carrier 1004 is slid forward until the cut point of the cleaning brush 1205 contacts the broaching tool 6 and the broaching position of the tube workpiece 7. The carrier 1004 is then positioned using a positioning structure, specifically by the engagement of the positioning pin 1103 with the corresponding positioning slot 1101. This method can be repeated until the position of the carrier 1004 no longer satisfies the cleaning function of the cleaning brush 1205. In this case, the cleaning brush 1205 can be disassembled and replaced. This maximizes the efficiency of the cleaning brush 1205 and saves economic costs.

[0042] In Example 2, based on Example 1, for debris and impurities that are difficult to clean, such as those that can be cleaned by relying solely on the cleaning brush 1205, and for impurities that are firmly adhered and difficult to clean, the cleaning brush 1205 located at the front end of the mounting plate 1203 can be replaced with a replacement component.

[0043] The replacement component includes a damping rod 1301 disposed at the front end of the mounting plate 1203 and a support plate 1302 disposed at the front end of the damping rod 1301; a cleaning brush 1303 and a scraper cone 1304 are disposed at the front end of the support plate 1302.

[0044] The scraper cone 1304 is hollow, and through holes 1305 are uniformly provided on the side wall of the scraper cone 1304.

[0045] The scraper cone 1304 provides an effective scraping and cleaning function for debris that is difficult to adhere firmly; the cleaning brush 1303 plays a major role in debris cleaning.

[0046] The damping rod 1301 is provided to provide a damping and shock absorption effect to ensure the service life of the scraper cone 1304.

[0047] The scraper cone 1304 and the through-hole body 1305 on its sidewall serve two purposes: while cleaning up debris, they also work in conjunction with the coolant spray pipe 8. Most of the coolant sprayed from the coolant spray pipe 8 falls onto the broaching position of the workpiece 7, providing a cooling effect. On the other hand, some coolant enters the hollow scraper cone 1304 through the through-hole body 1305, providing a temporary storage function for the coolant. This temporarily stored coolant can rotate around the broaching position with the scraper cone 1304, which can better improve the distribution of coolant and thus have a positive effect on its cooling function.

[0048] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant pipe inner hole broaching forming device, comprising a support frame (1) and a chip receiving box (2) disposed at the bottom of the support frame (1). A driving hydraulic cylinder (3) and a guide rod (5) are provided on the inner side of the support frame (1). A tool clamping part (4) is provided at the driving end of the driving hydraulic cylinder (3). A broaching tool (6) is clamped at the front end of the tool clamping part (4). The broaching tool (6) performs broaching on the tube workpiece (7) mounted on the outside of the support frame (1), and a coolant spray pipe (8) is provided on the outer wall of the support frame (1) for cooling the broaching tool (6). Its features are: A broaching auxiliary component for cleaning up debris is also provided on the side of the installation tube workpiece (7).

2. The wear-resistant pipe inner hole broaching forming device according to claim 1, characterized in that: The broaching auxiliary assembly includes an annular loading box (901) and a fixing foot (902) provided on the side of the annular loading box (901), which is fixed to the support frame (1) by bolts; A connector (903) is also provided on one side of the annular loading box (901), and a receiving cavity (905) communicating with the annular loading box (901) is provided in the connector (903). A transmission external gear ring (904) is provided in the annular loading box (901).

3. The wear-resistant pipe inner hole broaching forming device according to claim 2, characterized in that: A limiting ring cover (906) is fixed to the top of the annular loading box (901) by screws, and a protruding plate (907) is provided on one side of the limiting ring cover (906). A drive motor (908) is provided on the convex plate body (907). The drive motor (908) is connected to the drive gear disk (909), which is adapted to mesh with the transmission external gear ring (904).

4. The wear-resistant pipe inner hole broaching forming device according to claim 2, characterized in that: The broaching aid also includes a chip cleaning assembly disposed on the external gear ring (904); The debris cleaning assembly includes fixed strips (1001) that are equidistantly fixed on the transmission external gear ring (904). A limiting groove (1002) is provided along the length direction of the fixed strip (1001); The debris cleaning assembly also includes a carrier (1004), and a limiting slider (1003) that is adapted to and slidably connected to the limiting groove (1002) is fixedly provided at the bottom end of the carrier (1004). The carrier (1004) is positioned by a positioning structure.

5. The wear-resistant pipe inner hole broaching forming device according to claim 4, characterized in that: The positioning structure includes positioning slots (1101) that are equidistantly arranged in a straight line on the fixed strip (1001) and a threaded cavity (1102) that penetrates the carrier (1004). The screw cavity (1102) is provided with a positioning screw (1103) that is adapted to and engages with the positioning slot (1101), and a cylindrical handle (1104) is fixedly provided at one end of the positioning screw (1103).

6. The wear-resistant pipe inner hole broaching forming device according to claim 5, characterized in that: Rotation auxiliary protrusions (1105) are also provided at equal intervals on the top edge of the cylindrical handle (1104).

7. The wear-resistant pipe inner hole broaching forming device according to claim 4, characterized in that: A cleaning brush structure is also provided at the front end of the carrier (1004).

8. The wear-resistant pipe inner hole broaching forming device according to claim 7, characterized in that: The cleaning brush structure includes a mounting cavity (1201) disposed at the front end of the carrier (1004). The mounting cavity (1201) is adapted to be inserted into one end of the mounting plate (1203), and a cleaning brush (1205) for cleaning debris is also provided at the front end of the mounting plate (1203).

9. The wear-resistant pipe inner hole broaching forming device according to claim 8, characterized in that: A first positioning magnet (1202) is also embedded in the mounting cavity (1201); a second positioning magnet (1204) that attracts the first positioning magnet (1202) is also embedded at the tail end of the mounting plate (1203).

10. The wear-resistant pipe inner hole broaching forming device according to claim 8, characterized in that: The cleaning brush (1205), the carrier (1004), and the fixing strip (1001) are set in the same number of groups. The fixing strip (1001) is arranged in a ring at equal intervals on the transmission external gear ring (904).

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