Polygonal quick-change tool

Abstract

The utility model relates to a polygonal quick-change cutter, which comprises a cutter head and a cutter bar, the cutter head is connected with the cutter bar through a fastener, a first connecting hole and a stop groove are arranged in the cutter head, the first connecting hole is communicated with the stop groove, a second connecting hole is arranged in the cutter bar, the fastener comprises a connecting end and a stop end, and the connecting end is communicated with the stop end. The connecting end penetrates through the locking groove and the first connecting hole to be in threaded connection with the second connecting hole of the cutter bar, the locking end is of a polygonal structure, the locking groove is of a polygonal structure matched with the locking end in a locking mode, and the cutter head is provided with a plurality of cutting edges in the circumferential direction. The inner side end, close to the stop groove, of the cutting edge is provided with an angle groove allowing the end angle of the stop end to pass through. The polygonal quick-change cutter is simple in structure, quick mounting and dismounting of the small-diameter quick-change cutter are realized, and a better locking effect is also realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a polygonal quick-change tool. Background Art

[0002] Existing quick-change tools typically consist of a cutter head and a shank, fixedly connected by a connector and secured by a stop pin. Stop pins are generally suitable for large-diameter quick-change tools. However, due to the smaller cutter heads and shanks of small-diameter quick-change tools, the production of stop pins is complex and costly. Consequently, small-diameter quick-change tools are relatively rare on the market, failing to meet user demand. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a polygonal quick-change tool, which has a simple structure and not only realizes the rapid installation and disassembly of the small-diameter quick-change tool, but also achieves a better stopping effect.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a polygonal quick-change tool, including a tool head and a tool rod, the tool head and the tool rod are connected by a fastener, a first connecting hole and a stop groove are provided in the tool head, the first connecting hole is connected to the stop groove, and a second connecting hole is provided in the tool rod.

[0005] The fastener includes a connecting end and a stopping end. The connecting end passes through the stopping groove and the first connecting hole and is threadedly connected to the second connecting hole of the knife rod. The stopping end is set as a polygonal structure, and the stopping groove is set as a polygonal structure that cooperates with the stopping end.

[0006] The cutter head is provided with a plurality of cutting edges along the circumferential direction, and an angle groove for the end corner of the stop end to pass through is provided at the inner end of the cutting edge close to the stop groove.

[0007] In one embodiment, the retaining groove of the tool head of the polygonal quick-change tool is configured as an inner hexagonal retaining groove, and the retaining end is configured as a hexagonal retaining end, and the inner hexagonal retaining groove is adapted to the hexagonal retaining end.

[0008] In one embodiment, the polygonal quick-change tool has six cutting edges.

[0009] In one embodiment, a hexagonal adjustment end is provided at one end of the polygonal quick-change tool's stop end away from the connection end, and the hexagonal adjustment end is used to cooperate with an external wrench.

[0010] In one embodiment, cooling holes are respectively provided in the six end faces of the hexagonal adjustment end of the polygonal quick-change tool, and the six cooling holes are interconnected. Water holes are provided in the connecting end and the stop end, and the water holes are connected to the connecting ends of the six cooling holes. The water holes are used to connect external coolant.

[0011] In one embodiment, a positioning outer cone is provided at one end of the tool head of the polygonal quick-change tool close to the tool rod, and a positioning inner cone is provided inside the tool rod. The positioning outer cone of the tool head extends into the tool rod and cooperates with the positioning inner cone.

[0012] The beneficial effects of this application are:

[0013] This application provides a polygonal quick-change tool, the tool head and tool shank of which are connected by a fastener. The fastener's connecting end connects the tool head and tool shank, and the fastener's retaining end passes through multiple angle slots and engages with retaining grooves in the tool head. The provision of this fastener not only enables rapid installation and removal of small-diameter quick-change tools, but also achieves a good retaining effect and saves retaining space.

[0014] The quick-change tool adopts an inner hexagonal stop groove and a hexagonal stop end stop. The hexagonal structure is easy to process and saves factory processing costs.

[0015] The quick-change tool uses a hexagonal adjustment end to cooperate with an external wrench to strengthen the fastening connection between the cutter head and the tool rod.

[0016] The quick-change tool is provided with a water hole and six cooling holes in the fastener, which effectively cools the tool head during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a polygonal quick-change tool according to an embodiment of the present application;

[0018] Figure 2 An exploded view of a polygonal quick-change tool according to an embodiment of the present application;

[0019] Figure 3 A cross-sectional view of a polygonal quick-change tool according to an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a tool head of a polygonal quick-change tool according to an embodiment of the present application;

[0021] in:

[0022] 1. Cutting head; 2. Cutting rod; 3. Fastener; 11. First connecting hole; 12. Retaining groove; 121. Inner hexagonal retaining groove; 13. Cutting edge; 131. Angle groove; 14. Positioning outer cone; 21. Second connecting hole; 22. Positioning inner cone; 31. Connecting end; 32. Retaining end; 33. Hexagonal adjusting end; 34. Water hole; 321. Hexagonal retaining end; 331. Cooling hole. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, an embodiment of the present application provides a polygonal quick-change tool, including a tool head 1 and a tool rod 2, the tool head 1 and the tool rod 2 are connected by a fastener 3, a first connecting hole 11 and a retaining groove 12 are provided in the tool head 1, the first connecting hole 11 is connected to the retaining groove 12, and a second connecting hole 21 is provided in the tool rod 2.

[0025] like Figure 2 and Figure 3 As shown, the fastener 3 includes a connecting end 31 and a stopping end 32. The connecting end 31 passes through the stopping groove 12 and the first connecting hole 11 and is threadedly connected to the second connecting hole 21 of the shank 2. The stopping end 32 is configured as a polygonal structure, and the stopping groove 12 is configured as a polygonal structure that cooperates with the stopping end 32 for stopping.

[0026] like Figure 1 As shown, the cutter head 1 is provided with a plurality of cutting edges 13 along the circumferential direction, and the inner end of the cutting edge 13 close to the inner stop groove 12 is provided with a corner groove 131 for the end corner of the stop end 32 to pass through.

[0027] Specifically, the fastener 3 includes a connecting end 31 and a stop end 32. The connecting end 31 is a cylindrical structure and is provided with a thread. The stop end 32 is a hexagonal stop end 321, and the hexagonal stop end 321 has a hexagonal structure. The stop groove 12 in the cutter head 1 is an inner hexagonal stop groove 121, and the stop groove 12 is provided with a hexagonal structure. The cutter head 1 is provided with 6 cutting edges 13, and the inner ends of the 6 cutting edges 13 are all provided with angle grooves 131, and the angle grooves 131 are connected to the end angles of the inner hexagonal stop groove 121. The hexagonal stop end 321 passes through the six angle grooves 131 and is mutually adapted and locked with the inner hexagonal stop groove 121. The shank 2 is provided with a thread, and the thread of the shank 2 is threadedly connected to the thread of the connecting end 31.

[0028] The connecting end 31 of the fastener 3 is threaded through the retaining groove 12 and the first connecting hole 11 in the cutter head 1 and connected to the second connecting hole 21 of the cutter rod 2. The stop end 32 of the fastener 3 is engaged with the retaining groove 12 in the cutter head 1. Then, the connecting end 31 of the fastener 3 is tightened with the second connecting hole 21 of the cutter rod 2 by using a wrench and the hexagonal adjustment end 33, so that the cutter head 1 and the cutter rod 2 are firmly connected together.

[0029] In the above structure, the cutter head 1 and the cutter bar 2 are connected and stopped by providing a fastener 3. This polygonal quick-change tool has a simple structure and not only realizes the rapid installation and removal between the cutter head 1 and the cutter bar 2 of the small-diameter quick-change tool, but also achieves a good stopping effect and saves stopping space.

[0030] like Figure 2 and Figure 4 As shown, in one embodiment, the retaining groove 12 of the tool head 1 of the polygonal quick-change tool is configured as an internal hexagonal retaining groove 121, and the retaining end 32 is configured as a hexagonal retaining end 321. The internal hexagonal retaining groove 121 and the hexagonal retaining end 321 are adapted to fit together. This hexagonal retaining groove 121 and the hexagonal retaining end 321 provide a retaining engagement. This hexagonal structure facilitates factory processing, thereby reducing factory processing costs.

[0031] like Figure 4 As shown in one embodiment, the polygonal quick-change tool has six cutting edges 13. Each of the six cutting edges 13 is provided with a corner groove 131 through which the corners of the hexagonal stopper 321 pass. This arrangement enhances the retaining effect between the hexagonal stopper 321 and the inner hexagonal stopper groove 121.

[0032] like Figure 1 and Figure 2 As shown in one embodiment, the polygonal quick-change tool has a hexagonal adjustment end 33 disposed at the end of the stop end 32, distal from the connection end 31. The hexagonal adjustment end 33 is configured to engage with an external wrench. This hexagonal adjustment end 33 facilitates engagement with conventional wrenches. Rotating the connection end 31 tightens the cutter head 1 onto the tool shank 2, thereby strengthening the connection between the cutter head 1 and the tool shank 2.

[0033] like Figure 1 and Figure 2As shown in one embodiment, the six end surfaces of the hexagonal adjustment end 33 of the polygonal quick-change tool are each provided with a cooling hole 331. The six cooling holes 331 are interconnected. The connecting end 31 and the stop end 32 are provided with a water hole 34. The water hole 34 is connected to the connecting end 31 of the six cooling holes 331 and is used to connect to an external coolant. The external coolant flows through the water hole 34 into the six cooling holes 331. The coolant ejected from the six cooling holes 331 cools the tool head 1 during the machining process.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, the end of the tool head 1 of the polygonal quick-change tool near the tool shank 2 is provided with a positioning outer cone 14, and the tool shank 2 is provided with a positioning inner cone 22. The positioning outer cone 14 of the tool head 1 extends into the tool shank 2 and is positioned and matched with the positioning inner cone 22. The arrangement of the positioning outer cone 14 and the positioning inner cone 22 facilitates the positioning and matching of the tool head 1 and the tool shank 2, and strengthens the connection strength between the tool head 1 and the tool shank 2.

[0035] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A polygonal quick-change tool, characterized in that: The present invention comprises a cutter head (1) and a cutter rod (2), wherein the cutter head (1) and the cutter rod (2) are connected via a fastener (3); a first connecting hole (11) and a retaining groove (12) are provided in the cutter head (1); the first connecting hole (11) is communicated with the retaining groove (12); and a second connecting hole (21) is provided in the cutter rod (2); The fastener (3) comprises a connecting end (31) and a stopping end (32), the connecting end (31) passes through the stopping groove (12) and the first connecting hole (11) and is threadedly connected to the second connecting hole (21) of the knife rod (2), the stopping end (32) is configured as a polygonal structure, and the stopping groove (12) is configured as a polygonal structure that is engaged with the stopping end (32). The cutter head (1) is provided with a plurality of cutting edges (13) along the circumferential direction, and the inner end of the cutting edge (13) close to the inner stop groove (12) is provided with an angle groove (131) for the end corner of the stop end (32) to pass through.

2. The polygonal quick-change tool according to claim 1, characterized in that: The retaining groove (12) of the cutter head (1) is configured as an inner hexagonal retaining groove (121), and the retaining end (32) is configured as a hexagonal retaining end (321), and the inner hexagonal retaining groove (121) is adapted to the hexagonal retaining end (321).

3. The polygonal quick-change tool according to claim 2, characterized in that: The number of the cutting edges is 6.

4. The polygonal quick-change tool according to claim 1, characterized in that: The end of the stop end (32) away from the connection end (31) is provided with a hexagonal adjustment end (33), and the hexagonal adjustment end (33) is used to cooperate with an external wrench.

5. The polygonal quick-change tool according to claim 4, characterized in that: Cooling holes (331) are respectively provided in the six end surfaces of the hexagonal adjustment end (33), and the six cooling holes (331) are communicated with each other. Water holes (34) are provided in the connecting end (31) and the stop end (32), and the water holes (34) are communicated with the connecting ends (31) of the six cooling holes (331). The water holes (34) are used to connect external cooling liquid.

6. The polygonal quick-change tool according to claim 1, characterized in that: A positioning outer cone (14) is provided at one end of the cutter head (1) close to the cutter rod (2), and a positioning inner cone (22) is provided inside the cutter rod (2). The positioning outer cone (14) of the cutter head (1) extends into the cutter rod (2) and is positioned and matched with the positioning inner cone (22).

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