Ball-end cutter with replaceable cutter head

Abstract

The utility model relates to the field of cutters, in particular to a ball-end cutter with a replaceable cutter bit, which comprises a handle portion and a head portion, the handle portion is provided with a connecting groove and a plurality of first connecting holes, the connecting groove is arranged at the center of the bottom surface of the handle portion, the first connecting holes penetrate through the handle portion and are communicated with the connecting groove, and the head portion is provided with a plurality of second connecting holes. The head part is provided with a cutting edge, a chip groove and a connecting block, the size of the connecting block corresponds to that of the connecting groove, a plurality of second connecting holes are further formed in the connecting block, and the connecting bolt penetrates through the first connecting holes and the second connecting holes. The ball cutter is divided into the handle part and the head part, so that the ball cutter can be replaced or maintained by detaching the head part, and the cutter handle and the cutter head do not need to be detached; in addition, the mounting groove and the blade are arranged on the handle part, so that when the head part is not mounted, the handle part can also be used for milling, and a deep hole in the bottom of a ball can be machined.

Description

Technical Field

[0001] The utility model relates to the field of cutting tools, in particular to a ball-end cutting tool with a replaceable cutting head. Background Art

[0002] A milling machine is an automated machine that uses a milling cutter to cut workpieces to produce planes, grooves, threads and other surfaces. Milling machines have been widely used in the manufacturing industry due to their high efficiency, continuous and precise processing advantages. The ball cutters installed in milling machines are multi-faceted types such as double-edged, three-edged, and four-edged. The cutter body and teeth are mostly processed and formed in one piece. In actual use, the shank of the ball cutter is installed in the cutter disc. Due to the long-term use of the cutter head, it is easy to wear. When replacing, the shank needs to be removed and disassembled, which is inconvenient for replacement and maintenance.

[0003] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a ball-end cutter with a replaceable cutter head. The utility model is achieved through the following technical solutions:

[0005] A ball-end cutter with a replaceable cutter head comprises a shank and a head, the shank being provided with a connecting groove and a plurality of first connecting holes, the connecting groove being provided at the center position of the bottom surface of the shank, the first connecting holes passing through the shank and communicating with the connecting groove, the head being provided with a cutting edge, a chip removal groove and a connecting block, the connecting block having a size corresponding to that of the connecting groove, the connecting block being provided with a plurality of second connecting holes, and also comprising a plurality of connecting bolts, the connecting bolts passing through the first connecting holes and the second connecting holes.

[0006] In the above technical solution: the handle is used to be fixedly connected to the cutter disc; the head is used to realize the ball cutter function; the connecting groove and the connecting block are used to cooperate with each other, so that the head can be limited after the handle and the head cooperate; the first connecting hole and the second connecting hole are used to set the connecting bolts; the connecting bolts are used to fix the handle and the head; the cutting edge is used for cutting; and the chip groove is used to discharge chips.

[0007] The utility model is further configured as follows: the cutting edge and the chip removal groove are spaced apart, and the cutting edge is arc-shaped.

[0008] In the above technical solution: the cutting edge and the chip removal groove are arranged at intervals to ensure smooth chip removal; the cutting edge is arc-shaped to realize the ball cutter function, which is convenient for arc surface cutting.

[0009] The utility model is further configured as follows: a limiting step is further provided on the connecting block, and the size of the limiting step is larger than the size of the connecting groove.

[0010] In the above technical solution: the limiting step is used to align the positions of the first connecting hole and the second connecting hole; the size of the limiting step is larger than the size of the connecting groove, so that the connecting block will stop at the specified position.

[0011] The utility model is further configured as follows: the handle is further provided with a plurality of mounting grooves, and blades are detachably fixedly arranged in the mounting grooves.

[0012] In the above technical solution: the mounting groove is used to install the blade; the blade is used to achieve cutting, so that when the cutter head is not installed, the handle can still be used to achieve milling holes, and at the same time, the handle will not collide with the product when processing deep holes.

[0013] The utility model is further configured as follows: the outer diameter of the handle is not less than the outer diameter of the head.

[0014] In the above technical solution: the outer diameter of the handle is not less than the outer diameter of the head, so that the blade can achieve its function.

[0015] The utility model discloses a ball-end cutter with a replaceable cutter head. Compared with the prior art:

[0016] 1. The utility model is divided into a handle and a head, so that the ball cutter can be replaced or repaired by disassembling the head without disassembling the handle and the cutter disc;

[0017] 2. The utility model also provides a mounting groove and a blade on the handle, so that when the head is not installed, the handle can also be used for milling function, and deep holes in the bottom of the ball can be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 is a schematic diagram of the handle of the utility model;

[0020] Figure 3 It is a bottom view schematic diagram of the handle of the utility model;

[0021] Figure 4 It is a schematic diagram of the head of the utility model.

[0022] The corresponding component names represented by the numbers and letters in the figure are: 10-handle; 101-connecting groove; 102-first connecting hole; 103-installing groove; 20-head; 201-cutting edge; 202-chip groove; 203-connecting block; 204-second connecting hole; 205-limiting step; 30-connecting bolt; 40-blade. DETAILED DESCRIPTION

[0023] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0024] like Figure 1-4 As shown, the utility model proposes a ball-end cutter with replaceable cutter head, comprising a shank 10 and a head 20, wherein the shank 10 is provided with a connecting groove 101 and a plurality of first connecting holes 102, wherein the connecting groove 101 is arranged at the center position of the bottom surface of the shank 10, and the first connecting hole 102 passes through the shank 10 and is connected with the connecting groove 101, and the head 20 is provided with a cutting edge 201, a chip groove 202 and a connecting block 203, wherein the connecting block 203 has a size corresponding to that of the connecting groove 101, and a plurality of second connecting holes 204 are further provided on the connecting block 203, and further comprises a plurality of connecting bolts 30, wherein the connecting bolts 30 pass through the first connecting hole 102 and the second connecting hole 204. Among them, the number of the first connecting hole 102, the second connecting hole 204 and the connecting bolt 30 is the same, preferably, there are four; the four first connecting holes 102 are evenly arranged, and the central axis of the first connecting hole 102 does not point to the central axis of the handle 10; the first connecting hole 102 is a smooth hole, and the second connecting hole 204 is a threaded hole; the connecting block 203 coincides with the central axis of the head 20; the cross-sectional shape of the connecting groove 101 is a rectangle, and the cross-sectional shape of the connecting block 203 is also a rectangle to avoid relative rotation between the two after assembly.

[0025] like Figure 1-4 As shown, the utility model provides a ball-end cutter with a replaceable cutter head, wherein the cutting edge 201 and the chip groove 202 are arranged at intervals, and the cutting edge 201 is arc-shaped. Preferably, the number of the cutting edges 201 is four, and the number of the chip grooves 202 is also four.

[0026] like Figure 1-4 As shown, the utility model provides a ball-end cutter with a replaceable cutter head, wherein the connection block 203 is further provided with a limiting step 205, the size of which is larger than the size of the connection groove 101. The limiting step 205 is annular, and its outer diameter is larger than the diagonal size of the connection groove 101.

[0027] like Figure 1-4As shown, the utility model provides a ball-end cutter with a replaceable cutter head, wherein the handle 10 is further provided with a plurality of mounting grooves 103, and a blade 40 is detachably fixedly provided in the mounting groove 103. The first connecting hole 102 is located in the mounting groove 103, and the first connecting hole 102 is a stepped hole with a larger outer diameter, so that after the connecting bolt 30 is matched with the second connecting hole 204, the end of the connecting bolt 30 will not protrude from the mounting groove 103, thereby preventing the connecting bolt 30 from interfering with the installation and removal of the blade 40.

[0028] like Figure 1-4 As shown, the utility model provides a ball-end cutter with replaceable cutter head, wherein the outer diameter of the handle 10 is not less than the outer diameter of the head 20. The value of the outer diameter of the head 20 is the vertical distance of the farthest distance between the cutting edge 201 and the central axis of the head 20; the value of the outer diameter of the handle 10 is the vertical distance of the farthest distance between the blade 40 and the central axis of the handle 10.

[0029] The working principle of the utility model is:

[0030] a) installing the handle and the cutter disc;

[0031] b) assembling the mounting block of the head with the mounting groove of the handle;

[0032] c) a connecting bolt passes through the first connecting hole and is threadedly connected to the second connecting hole;

[0033] d) Check the handle and head to ensure their coaxiality;

[0034] e) Tighten the connecting bolts.

[0035] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

[0036] 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 such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A ball-end cutter with a replaceable cutter head, characterized in that: The invention comprises a shank (10) and a head (20), wherein the shank (10) is provided with a connecting groove (101) and a plurality of first connecting holes (102), wherein the connecting groove (101) is arranged at the central position of the bottom surface of the shank (10), and the first connecting hole (102) passes through the shank (10) and is connected with the connecting groove (101), and the head (20) is provided with a cutting edge (201), a chip removal groove (202) and a connecting block (203), wherein the connecting block (203) has a size corresponding to that of the connecting groove (101), and the connecting block (203) is also provided with a plurality of second connecting holes (204), and further comprises a plurality of connecting bolts (30), wherein the connecting bolts (30) pass through the first connecting hole (102) and the second connecting hole (204).

2. A ball-end cutter with a replaceable cutter head according to claim 1, characterized in that: The cutting edge (201) and the chip removal groove (202) are arranged at intervals, and the cutting edge (201) is arc-shaped.

3. A ball-end cutter with a replaceable cutter head according to claim 2, characterized in that: A limiting step (205) is also provided on the connection block (203), and the size of the limiting step (205) is larger than the size of the connection groove (101).

4. A ball-end cutter with a replaceable cutter head according to claim 3, characterized in that: The handle (10) is also provided with a plurality of mounting grooves (103), and blades (40) are detachably fixedly arranged in the mounting grooves (103).

5. A ball-end cutter with a replaceable cutter head according to claim 4, characterized in that: The outer diameter of the handle (10) is not less than the outer diameter of the head (20).

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