Polishing device for broach machining

Abstract

The utility model relates to the field of polishing devices, and particularly discloses a broach machining and polishing device which comprises a mounting base, an upper support is mounted on the upper surface of the mounting base, a broach is arranged under the upper support and located above the mounting base, a polishing mechanism is arranged above the broach, and a polishing frame is mounted in the polishing mechanism. Scrapers are installed on the lower surface of one end of the polishing frame in an array mode, a lower protrusion is installed on the lower surface of the other end of the polishing frame, pressing plates are arranged on the two sides of the lower protrusion, springs are connected between the pressing plates and the lower protrusion, and polishing abrasive paper is arranged on the outer side of the lower protrusion in an array mode. A scraping knife on the lower surface of the grinding frame is used for scraping the interior of a broach tooth groove, and in the continuous moving process of the grinding mechanism, it is guaranteed that burrs and lubricating oil on the inner side are scraped away, and after a wiping pad makes contact with the interior of the tooth groove, wiping is conducted; and finally, the inner sides of the tooth grooves are polished under the action of the multiple pieces of polishing abrasive paper arranged in an array, and the polishing efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of grinding devices, in particular to a broach processing and grinding device. Background Art

[0002] A broach is a forming tool used for broaching. There are multiple rows of teeth on the surface of the tool. The size and shape of each row of teeth increase and change from the cutting end to the cutting end. Although there are many types of broaches, their structural compositions are similar. For example, the structure of an ordinary round hole broach is composed of: a shank, used to clamp the broach and transmit power; a neck, which serves as a connection; a transition cone, which introduces the leading part of the broach into the workpiece; a leading part, which serves as a guide to prevent the broach from tilting; cutting teeth, which complete the cutting work and are composed of rough cutting teeth and fine cutting teeth; calibration teeth, when the broach performs broaching motion, each tooth cuts a certain thickness of metal from the workpiece, and finally obtains the required size and shape. Broaches are often used to process round holes, spline holes, keyways, planes and forming surfaces in batch and mass production.

[0003] However, the broach usually needs to be lubricated during the tooth opening operation, and it is difficult to achieve a good grinding effect during the grinding after completion due to the presence of the lubricant. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a broach processing and grinding device, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a broach processing and grinding device, comprising a mounting seat, an upper bracket being mounted on the upper surface of the mounting seat, a broach being arranged above the mounting seat just below the upper bracket, a grinding mechanism being arranged above the broach, a grinding frame being mounted inside the grinding mechanism, a scraper being mounted in an array on the lower surface of one end of the grinding frame, a lower protrusion being mounted on the lower surface of the other end of the grinding frame, pressure plates being arranged on both sides of the lower protrusion, a spring being connected between the pressure plate and the lower protrusion, and a grinding sandpaper being arranged in an array on the outer side of the lower protrusion.

[0006] As a further solution of the present invention: an installation slot is correspondingly provided on the outer side of the grinding sandpaper above the grinding frame, and a movable slide groove is provided on the upper surface of the grinding frame.

[0007] As a further solution of the present invention: a threaded sleeve is provided between the grinding mechanism and the upper bracket, threaded connecting rods are installed at both upper and lower ends of the threaded sleeve, and sliding guide blocks are installed at the ends of the threaded connecting rods.

[0008] As a further solution of the present invention: a clamping seat is installed on the upper surface of the mounting seat below the broach, and a wiping pad is installed on the lower surface of the grinding frame between the scraper and the lower protrusion.

[0009] As a further solution of the present invention: the threaded connecting rod slides in a limited position through the sliding guide block and the movable sliding groove, and the threaded connecting rod engages and rotates with the threaded sleeve.

[0010] As a further solution of the present invention: a positioning fixture is installed at the end of the sandpaper located at the installation slot.

[0011] As a further solution of the present invention: the outer diameter of the lower protrusion is smaller than the inner diameter of the tooth groove on the upper surface of the broach.

[0012] As a further solution of the present invention: the scraper and the lower protrusion are both fixedly connected to the grinding frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The scraper on the lower surface of the grinding frame is scraped inside the broach tooth groove. When the grinding mechanism continues to move, the burrs and lubricating oil on the inside are scraped off. After the wiping pad contacts the inside of the tooth groove and wipes it, the inside of the tooth groove is polished by the multiple sandpapers arranged in the array to ensure the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a broach processing and grinding device;

[0016] Figure 2 It is a structural schematic diagram of a grinding mechanism in a broach processing and grinding device;

[0017] Figure 3 It is a partially enlarged schematic diagram of a grinding frame in a broach processing and grinding device;

[0018] Figure 4 This is a partially enlarged schematic diagram of a scraper in a broach processing and grinding device.

[0019] In the figure: 1. Mounting seat; 2. Upper bracket; 3. Grinding mechanism; 4. Broach; 5. Clamping seat; 6. Threaded sleeve; 301. Grinding frame; 302. Scraper; 303. Wiping pad; 304. Lower protrusion; 305. Grinding sandpaper; 306. Pressing plate; 307. Spring; 308. Mounting slot; 309. Moving slide; 601. Threaded connecting rod; 602. Sliding guide block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-4 As shown, this embodiment provides a broach processing and grinding device, including a mounting seat 1, an upper bracket 2 is installed on the upper surface of the mounting seat 1, a broach 4 is provided just below the upper bracket 2 and above the mounting seat 1, a clamping seat 5 is installed below the broach 4 and on the upper surface of the mounting seat 1, a grinding mechanism 3 is provided above the broach 4, a grinding frame 301 is installed inside the grinding mechanism 3, a scraper 302 is installed in an array on the lower surface of one end of the grinding frame 301, the cross section of the scraper 302 is V-shaped, and the residual lubricating oil inside can be scraped off after contacting the inside of the tooth groove, and the grinding frame 30 1 is provided with a lower protrusion 304 on the lower surface of the other end thereof, the outer diameter of the lower protrusion 304 being smaller than the inner diameter of the tooth groove on the upper surface of the broach 4, the scraper 302 and the lower protrusion 304 are fixedly connected to the grinding frame 301, and a pressure plate 306 is provided on both sides of the lower protrusion 304, a wiping pad 303 is provided on the lower surface of the grinding frame 301 between the scraper 302 and the lower protrusion 304, a spring 307 is connected between the pressure plate 306 and the lower protrusion 304, and an array of grinding sandpaper 305 is provided on the outer side of the lower protrusion 304, and the mesh size of the grinding sandpaper 305 arranged in the array is set in an increasing manner.

[0022] like Figure 2-3 As shown, in this embodiment, the outer side of the grinding sandpaper 305 is located above the grinding frame 301 and a mounting slot 308 is correspondingly provided. The end of the grinding sandpaper 305 is located at the position of the mounting slot 308 and a positioning fixture is installed. A movable slide groove 309 is provided on the upper surface of the grinding frame 301. A threaded sleeve 6 is provided between the grinding mechanism 3 and the upper bracket 2. A threaded connecting rod 601 is installed at the upper and lower ends of the threaded sleeve 6. The threaded connecting rod 601 engages and rotates with the threaded sleeve 6. A sliding guide block 602 is installed at the end of the threaded connecting rod 601. The threaded connecting rod 601 is limited to slide with the movable slide groove 309 through the sliding guide block 602. The threaded connecting rod 601 at the upper end position is limited to slide on the lower surface of the upper bracket 2 through the sliding guide block 602.

[0023] The working principle of the present invention is as follows: when in use, the broach 4 is placed on the upper surface of the mounting seat 1, and is positioned by the clamping seat 5. The distance between the grinding mechanism 3 and the broach 4 is adjusted by controlling the length of the threaded sleeve 6 and the two threaded connecting rods 601. The grinding sandpaper 305 with increasing mesh sizes is passed through the interior of the mounting slot 308 in sequence and then fixed. The grinding mechanism 3 is moved as a whole by using the movable slide groove 309 opened above the grinding frame 301 and the limiting guide action of the sliding guide block 602. The scraper 302 on the lower surface of the broach 4 scrapes the inside of the tooth groove, ensuring that the burrs and lubricating oil on the inside are scraped off while the grinding mechanism 3 continues to move. After the wiping pad 303 contacts the inside of the tooth groove and wipes it, the inside of the tooth groove is finally polished by the action of multiple sandpapers 305 arranged in an array. After the grinding of one tooth groove is completed, the threaded connecting rod 601 at the upper end of the threaded sleeve 6 is moved below the upper bracket 2, and the grinding mechanism 3 is controlled to move as a whole to another adjacent tooth groove to repeat the above operation.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0025] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A broach processing and grinding device, comprising a mounting seat (1), characterized in that: An upper bracket (2) is installed on the upper surface of the mounting seat (1), a broach (4) is provided just below the upper bracket (2) and above the mounting seat (1), a grinding mechanism (3) is provided above the broach (4), a grinding frame (301) is installed inside the grinding mechanism (3), a scraper (302) is installed in an array on the lower surface of one end of the grinding frame (301), a lower protrusion (304) is installed on the lower surface of the other end of the grinding frame (301), pressing plates (306) are provided on both sides of the lower protrusion (304), a spring (307) is connected between the pressing plate (306) and the lower protrusion (304), and a grinding sandpaper (305) is provided in an array on the outer side of the lower protrusion (304).

2. A broach processing and grinding device according to claim 1, characterized in that: The outer side of the grinding sandpaper (305) is located above the grinding frame (301) and is provided with a mounting slot (308) corresponding thereto, and the upper surface of the grinding frame (301) is provided with a movable sliding groove (309).

3. A broach processing and grinding device according to claim 2, characterized in that: A threaded sleeve (6) is provided between the grinding mechanism (3) and the upper bracket (2), threaded connecting rods (601) are installed at both upper and lower ends of the threaded sleeve (6), and sliding guide blocks (602) are installed at the ends of the threaded connecting rods (601).

4. The broach processing and grinding device according to claim 1, characterized in that: A clamping seat (5) is installed on the upper surface of the mounting seat (1) below the broach (4), and a wiping pad (303) is installed on the lower surface of the grinding frame (301) between the scraper (302) and the lower protrusion (304).

5. The broach processing and grinding device according to claim 3, characterized in that: The threaded connecting rod (601) is limitedly slidable via the sliding guide block (602) and the movable sliding groove (309), and the threaded connecting rod (601) is engaged and rotated with the threaded sleeve (6).

6. The broach processing and grinding device according to claim 2, characterized in that: A positioning fixture is installed at the position where the end of the grinding sandpaper (305) is located in the installation slot (308).

7. The broach processing and grinding device according to claim 1, characterized in that: The outer diameter of the lower protrusion (304) is smaller than the inner diameter of the tooth groove on the upper surface of the broach (4).

8. The broach processing and grinding device according to claim 1, characterized in that: The scraper (302) and the lower protrusion (304) are both fixedly connected to the grinding frame (301).

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