A milling cutter with replaceable cutting edges

Abstract

This utility model relates to the field of milling cutter technology and provides a milling cutter with an easily replaceable cutting edge. The invention utilizes a locking element and a fastening plate to secure the locking block, ensuring the milling cutter edge is firmly fixed to the connecting block. When the milling cutter edge becomes loose after prolonged use, rotating the locking element moves the threaded side of the insert rod deeper into the threaded hole. Simultaneously, rotating the limiting block presses down on the conical pressure block, causing its outer wall to press against the inclined surface. This moves the fastening plate closer to the locking block, and the inclined surface presses against the side walls of the trapezoidal grooves, causing the locking block to press against the connecting groove, thus securing the milling cutter edge. This solves the problem of requiring replacement of loose milling cutter edges and increases the service life of the milling cutter edge.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and in particular to a milling cutter with easily replaceable cutting edges. Background Technology

[0002] CNC milling cutters are rotary cutting tools with one or more cutting teeth used for milling operations. During operation, each cutting tooth sequentially and intermittently removes the excess material from the workpiece. Milling cutters are mainly used for machining processes such as steps, grooves, shaped surfaces, and cutting off workpieces. They have been widely used in machining in various fields. With the development of the times, their models and functions have become more and more complete, but some problems still exist.

[0003] Existing milling cutter edges are generally fixed to the cutter head by welding. This means that when the milling cutter edge is damaged, the operator cannot disassemble and replace the edge separately, but has to replace the entire milling cutter, which increases the cost of use. Utility Model Content

[0004] To address the problem mentioned in the background section that existing milling cutter cutting edges cannot be replaced, this utility model provides the following technical solution:

[0005] A milling cutter with easily replaceable cutting edges, including a cutter head;

[0006] Multiple connecting blocks are installed on the edge of the cutter head, and a milling cutter blade is installed on one side of each connecting block.

[0007] One end of the connecting block is fitted with a fastening plate for limiting the milling cutter edge. The middle of the fastening plate is fitted with a locking element for locking the milling cutter edge in conjunction with the fastening plate. One side of the connecting block is fitted with a limiting cover for limiting the locking element and the fastening plate.

[0008] Furthermore, a stepped groove is provided on one side of the connecting block, and a threaded hole is machined on the edge of the stepped groove. Multiple bolts are installed on the edge of the limiting cover, and the bolts and the threaded hole are threadedly connected.

[0009] Furthermore, a retaining block is installed at one end of the milling cutter near the first connecting block, a second connecting block is installed on one side of the retaining block, and a trapezoidal groove is provided on the other side of the retaining block.

[0010] Furthermore, a slot for limiting the position of the locking block is provided in the middle of the groove cavity of the stepped groove, and a connecting groove for limiting the position of the connecting block two is provided on one side of the groove cavity of the slot.

[0011] Furthermore, a second connecting groove is provided on the other side of the slot cavity, and a fastening plate is installed in the second connecting groove. The second connecting groove cavity has a threaded hole 2 that is threadedly connected to the locking member in the middle.

[0012] Furthermore, the fastening plate has a bevel on the side facing the locking block, a through hole for inserting a locking element is machined in the middle of the fastening plate, and a bevel is machined on the side of the through hole near the locking block.

[0013] Furthermore, the locking component includes a limiting rotating block, one side of which is machined with a regular hexagonal hole, and the other side of which is fitted with a connecting post.

[0014] Furthermore, a plug rod is installed at one end of the connecting column, and the diameter of the plug rod is smaller than the diameter of the connecting column. One end of the plug rod is machined with an external thread, and a conical pressure block is sleeved on the rod body. A through hole is opened in the middle of the conical pressure block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses the cooperation of a locking component and a fastening plate to secure the locking block, ensuring the milling cutter blade is firmly fixed to the connecting block. When the milling cutter blade becomes loose after prolonged processing, rotating the locking component causes the threaded side of the insert rod to move deeper into the threaded hole. When the limiting block is rotated, the connecting column simultaneously presses down on the conical pressure block, causing the outer wall of the conical pressure block to press down on the inclined surface. This causes the fastening plate to move closer to the locking block, and the inclined surface squeezes the side walls of the trapezoidal grooves, causing the locking block to press against the connecting groove, thus securing the milling cutter blade. This solves the problem of milling cutter blades needing to be replaced due to loosening, and increases the service life of the milling cutter blade. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0019] Figure 3 This is a schematic diagram of the structure of the fastening plate of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the locking component of this utility model.

[0021] The following is a list of component names represented by the various reference numerals in the attached figures:

[0022] 10-Milling cutter blade, 11-Clamping block, 12-Connecting block two, 13-Trapezoidal groove, 100-Cutter head, 110-Connecting block one, 111-Step groove, 112-Threaded hole one, 113-Slot, 114-Connecting groove one, 115-Connecting groove two, 116-Threaded hole two, 120-Locking part, 121-Limiting rotating block, 122-Regular hexagonal hole, 123-Connecting post, 124-Insertion rod, 125-External thread, 126-Conical pressure block, 127-Through hole two, 130-Limiting cover, 131-Bolt one, 140-Fastening plate, 141-Bevel one, 142-Through hole one, 143-Bevel two. Detailed Implementation

[0023] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0024] Please see Figures 1-4 This utility model provides a milling cutter with an easy-to-change milling cutter edge, including a cutter head 100.

[0025] Multiple connecting blocks 110 are fixedly installed on the edge of the cutter head 100. A stepped groove 111 is formed on one side of the connecting block 110, and multiple threaded holes 112 are machined on the edge of the stepped groove 111. A milling cutter 10 is installed on one side of the connecting block 110. A retaining block 11 is fixedly installed on one end of the milling cutter 10 near the connecting block 110. A connecting block 12 is fixedly installed on one side of the retaining block 11, and a trapezoidal groove 13 is formed on the other side of the retaining block 11.

[0026] The stepped groove 111 has a slot 113 in the middle of the groove cavity for limiting the locking block 11. The locking block 11 is locked in the slot 113. A connecting groove 114 is opened on one side of the groove cavity of the slot 113 for limiting the connecting block 12. When the locking block 11 is locked in the slot 113, the connecting block 12 is simultaneously locked into the connecting groove 114. The locking block 11 is limited by the slot 113 and the connecting groove 114, thereby limiting the milling cutter blade 10.

[0027] One end of the connecting block 110 is fitted with a fastening plate 140 for limiting the milling cutter edge 10, and one end of the fastening plate 140 is inserted into the groove of the trapezoidal groove 13. A locking member 120 is installed in the middle of the fastening plate 140 for locking the milling cutter edge 10 in conjunction with the fastening plate 140. The locking member 120 presses the fastening plate 140, causing the fastening plate 140 to move closer to the locking block 11, thereby fastening the locking block 11 and making the milling cutter edge 10 more secure.

[0028] A limiting cover 130 for limiting the locking member 120 and the fastening plate 140 is installed on one side of the connecting block 110. A plurality of bolts 131 are installed on the edge of the limiting cover 130, and the bolts 131 are threadedly connected to the threaded hole 112.

[0029] A connecting groove 115 is provided on the side of slot 113 facing 116, and a fastening plate 140 is installed in the connecting groove 115. The fastening plate 140 can slide in the connecting groove 115. A threaded hole 116 is machined in the middle of the groove cavity of the connecting groove 115 and is threaded to the locking member 120. The locking member 120 is screwed into the threaded hole 116 to position the locking member 120. When the locking member 120 moves up and down, the fastening plate 140 can be adjusted to abut against the block 11.

[0030] The locking component 120 includes a limiting rotating block 121. One side of the limiting rotating block 121 is machined with a regular hexagonal hole 122, and the limiting rotating block 121 is installed on the upper end of the fastening plate 140. A connecting post 123 is fixedly installed on the other side of the limiting rotating block 121. The diameter of the limiting rotating block 121 is larger than the diameter of the connecting post 123. A plug rod 124 is fixedly installed at one end of the connecting post 123, and the diameter of the plug rod 124 is smaller than the diameter of the connecting post 123. One end of the plug rod 124 is machined with an external thread 125 so that one end of the plug rod 124 can be screwed into the threaded hole 116. A conical pressure block 126 is sleeved on the rod body of the plug rod 124, and one side of the conical pressure block 126 abuts against the connecting post 123.

[0031] The conical pressure block 126 has a through hole 127 in the middle, and the diameter of the through hole 127 is larger than the diameter of the insertion rod 124. The diameter of the through hole 127 is smaller than the diameter of the connecting post 123. The limiting cover 130 has a through hole in the middle to allow the connecting post 123 and the insertion rod 124 to pass through. After the connecting post 123 and the insertion rod 124 pass through the through hole in the middle of the limiting cover 130, the conical pressure block 126 is fitted onto the insertion rod 124. After the insertion rod 124 passes through the fastening plate 140, the end of the insertion rod 124 with the external thread 125 is screwed into the threaded hole 116.

[0032] The fastening plate 140 has a bevel 141 on the side facing the locking block 11. The bevel 141 abuts against the two bevels of the trapezoidal groove 13. The fastening plate 140 has a through hole 142 in the middle for the locking member 120 to be inserted. The insertion rod 124 passes through the cavity of the through hole 142. The conical pressure block 126 can be inserted into the cavity of the through hole 142. The side of the through hole 142 near the locking block 11 has a bevel 143. The outer wall of the conical pressure block 126 abuts against the bevel 143. This invention utilizes the cooperation of the conical pressure block 126 and the inclined surface 143 to ensure that even after the milling cutter blade 10 becomes loose due to prolonged use, it continues to rotate the limiting rotating block 121, causing the insertion rod 124 to move into the cavity of the threaded hole 116. The connecting column 123 presses down on the conical pressure block 126, which in turn pushes the fastening plate 140. The fastening plate 140 then presses against the locking block 11, thus securing the milling cutter blade 10 and preventing it from shaking during workpiece processing.

[0033] When fastening the milling cutter 10, the locking block 11 is inserted into the slot 113, and the connecting block 12 is simultaneously inserted into the connecting slot 114. Then, the fastening plate 140 is inserted into the connecting slot 115, so that one end of the fastening plate 140 is inserted into the trapezoidal groove 13, and the inclined surface 141 abuts against the side of the trapezoidal groove 13. After the locking member 120 is installed on the limiting cover 130, the limiting rotating block 121 is rotated by inserting the internal hexagonal bolt into the regular hexagonal hole 122. The side of the insert rod 124 with the external thread 125 is screwed into the threaded hole 116. When the limiting rotating block 121 is rotated, the connecting column 123 simultaneously presses down on the conical pressure block 126, so that the conical pressure block 126... The outer wall of 6 presses down on the second inclined plane 143, causing the fastening plate 140 to move closer to the locking block 11. The first inclined plane 141 squeezes the side wall of the trapezoidal groove 13, and the locking block 11 presses against the first connecting groove 114, thereby locking the milling cutter 10. Finally, the bolt 131 is screwed into the threaded hole 112, and the limiting cover 130 limits the locking block 11, the fastening plate 140 and the locking member 120. When the milling cutter 10 is severely worn and needs to be disassembled and replaced, the bolt 131 is unscrewed from the threaded hole 112, and the locking member 120 is unscrewed from the threaded hole 116, so that the milling cutter 10 can be disassembled. The operation is relatively simple.

[0034] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A milling cutter with easily replaceable cutting edges, comprising a cutter head (100), characterized in that: The cutter head (100) is equipped with a plurality of connecting blocks (110) on its side, and a milling cutter blade (10) is installed on one side of the connecting block (110). One end of the connecting block (110) is fitted with a fastening plate (140) for limiting the milling cutter edge (10). A locking member (120) for locking the milling cutter edge (10) is fitted in the middle of the fastening plate (140). A limiting cover (130) for limiting the locking member (120) and the fastening plate (140) is fitted on one side of the connecting block (110).

2. The milling cutter with easily replaceable cutting edges according to claim 1, characterized in that: A stepped groove (111) is provided on one side of the connecting block (110), and a threaded hole (112) is machined on the edge of the stepped groove (111). Multiple bolts (131) are installed on the edge of the limiting cover (130), and the bolts (131) and the threaded hole (112) are threadedly connected.

3. A milling cutter with easily replaceable cutting edges according to claim 2, characterized in that: A locking block (11) is installed at one end of the milling cutter (10) near the first connecting block (110), a second connecting block (12) is installed on one side of the locking block (11), and a trapezoidal groove (13) is opened on the other side of the locking block (11).

4. A milling cutter with easily replaceable cutting edges according to claim 3, characterized in that: The stepped groove (111) has a slot (113) in the middle of the groove cavity for limiting the locking block (11), and a connecting groove (114) is provided on one side of the groove cavity of the slot (113) for limiting the connecting block two (12).

5. A milling cutter with easily replaceable cutting edges according to claim 4, characterized in that: The slot (113) has a connecting slot two (115) on the other side of the slot cavity, and the fastening plate (140) is installed in the connecting slot two (115). The connecting slot two (115) has a threaded hole two (116) in the middle of the slot cavity that is threaded to the locking member (120).

6. A milling cutter with easily replaceable cutting edges according to claim 3, characterized in that: The fastening plate (140) has a bevel (141) on the side facing the locking block (11), and a through hole (142) for the locking member (120) to be inserted is machined in the middle of the fastening plate (140). The through hole (142) has a bevel (143) on the side near the locking block (11).

7. A milling cutter with easily replaceable cutting edges according to claim 1, characterized in that: The locking component (120) includes a limiting rotating block (121), one side of which is machined with a regular hexagonal hole (122), and the other side of which is installed with a connecting post (123).

8. A milling cutter with easily replaceable cutting edges according to claim 7, characterized in that: One end of the connecting post (123) is equipped with a plug rod (124), and the diameter of the plug rod (124) is smaller than the diameter of the connecting post (123). One end of the plug rod (124) is machined with an external thread (125). A conical pressure block (126) is sleeved on the rod body of the plug rod (124), and a through hole (127) is opened in the middle of the conical pressure block (126).

Images