Scribing cutter

Abstract

The utility model discloses a scribing cutter which comprises a cutter handle used for being connected with a spindle of a three-axis numerical control milling machine and a first cutter bar arranged at the end, away from the spindle of the three-axis numerical control milling machine, of the cutter handle, and a second cutter bar extending towards the end, away from the cutter handle, of the first cutter bar is detachably connected to the outer side of the first cutter bar. The end, away from the first cutter bar, of the second cutter bar is detachably connected with a line cutter extending towards the inner side, and the line cutter inclines towards the end, away from the first cutter bar, of the second cutter bar. The device is mounted on a three-axis numerical control milling machine, so that the scribed lines on the web surface and the inner side wall can be machined on the basis of one-time clamping, the production cost can be reduced, and the machining efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of mold engraving technology, and in particular relates to an engraving tool. Background Technology

[0002] Mold engraving lines are generally distributed on the web surface and inner wall of the mold base, requiring high precision. Three-axis or five-axis CNC milling machines are typically used to hold the cutting tools for engraving. However, three-axis CNC milling machines can only machine engraving lines on surfaces perpendicular to the spindle. This means that to machine engraving lines on the web surface and inner wall on a three-axis CNC milling machine, the mold needs to be clamped multiple times to ensure the engraving surface is perpendicular to the spindle. This repeated tool setting and alignment can lead to engraving misalignment or reduced production efficiency. Furthermore, while five-axis CNC milling machines can machine engraving lines on the web surface and inner wall in a single setup, their cost is 2-3 times higher than that of three-axis CNC milling machines. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a scribing tool that can process scribing lines on the web surface and inner sidewalls using a three-axis CNC milling machine on the basis of a single mold clamping.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A scribing tool includes a tool holder for connection to a spindle of a three-axis CNC milling machine and a first tool bar disposed at the end of the tool holder away from the spindle of the three-axis CNC milling machine. A second tool bar extending away from the tool holder is detachably connected to the outer side of the first tool bar. A scribing cutter extending inward is detachably connected to the end of the second tool bar away from the first tool bar. The scribing cutter is inclined towards the end away from the first tool bar.

[0006] The beneficial effects of adopting the above technical solution are as follows: by installing the scribing tool on a three-axis CNC milling machine, scribing lines on the web surface and inner sidewall can be machined in one clamping, which helps to reduce production costs and improve processing efficiency.

[0007] Furthermore, the second tool holder is connected to the first tool holder by a number of first screws.

[0008] The beneficial effect of adopting the above technical solution is that multiple first screws together fix the second tool holder to the first tool holder.

[0009] Furthermore, the first tool holder is provided with a plurality of first threaded holes, the second tool holder is provided with a plurality of first connecting holes, and the shanks of the plurality of first screws pass through the plurality of first connecting holes and are threadedly connected to the plurality of first threaded holes respectively.

[0010] Furthermore, the first connecting hole is a stepped hole, the diameter of the end of the first connecting hole near the first threaded hole matches the major diameter of the shank of the first screw, and the head of the first screw is located inside the end of the first connecting hole away from the first threaded hole.

[0011] The beneficial effects of adopting the above technical solution are as follows: this arrangement allows the second tool holder to be limited by the shanks of the multiple first screws; in addition, it also prevents the heads of the first screws from protruding from the second tool holder.

[0012] Furthermore, the first screw is an internal hexagon screw.

[0013] The beneficial effect of adopting the above technical solution is that this setting facilitates the installation or removal of the first screw using an internal hex wrench.

[0014] Furthermore, a first plane is provided on the outer side of the first tool holder, and a second plane is provided on the inner side of the second tool holder for fitting with the first plane.

[0015] The beneficial effects of adopting the above technical solution are as follows: this arrangement allows the first and second tool holders to have a larger contact surface, thereby making the connection between the first and second tool holders more stable.

[0016] Furthermore, a first threaded hole is provided on the inner side of the first plane, and a first connecting hole is provided on the outer side of the second plane.

[0017] Furthermore, the scribing tool is fastened to the second tool holder by a second screw.

[0018] Furthermore, the second tool holder is provided with a second connecting hole for inserting one end of the scribing tool and a second threaded hole for threaded connection of the second screw, with one side of the second connecting hole communicating with the second threaded hole.

[0019] The beneficial effects of adopting the above technical solution are as follows: after the shank of the second screw passes through the second threaded hole, it can enter the second connecting hole so as to fasten the scribing knife in the second connecting hole, thereby fixing the scribing knife on the second knife shank.

[0020] Furthermore, the tool holder is a Morse taper tool holder.

[0021] The beneficial effects of this utility model are as follows:

[0022] By installing the scribing tool of this invention on a three-axis CNC milling machine, scribing lines on the web surface and inner sidewall can be machined in a single setup, thereby helping to reduce production costs and improve processing efficiency. Attached Figure Description

[0023] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein:

[0024] Figure 1 A schematic diagram of the operation of this utility model is shown;

[0025] Figure 2 A schematic diagram of the structure of this utility model is shown;

[0026] Figure 3 The front view of this utility model is shown;

[0027] Figure 4 Showing Figure 3 Sectional view at point AA;

[0028] Figure 5 A schematic diagram of the mold structure in this utility model is shown;

[0029] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0030] Figure label:

[0031] 1. Web surface; 2. Inner sidewall; 3. Tool holder; 4. First tool shank; 401. First threaded hole; 5. Second tool shank; 501. First connecting hole; 502. Second connecting hole; 503. Second threaded hole; 6. Scribing tool; 7. First screw; 8. Second screw. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] This utility model provides a scribing tool, such as Figure 1 , 2 and Figure 5 As shown, it includes a tool holder 3 for connecting to the spindle of a three-axis CNC milling machine and a first tool bar 4 disposed at the end of the tool holder 3 away from the spindle of the three-axis CNC milling machine. A second tool bar 5 extending away from the tool holder 3 is detachably connected to the outer side of the first tool bar 4. A scribing tool 6 extending inward is detachably connected to the end of the second tool bar 5 away from the first tool bar 4, and the scribing tool 6 is inclined towards the end away from the first tool bar 4, that is, inclined downward. The side closer to the axis of the tool holder 3 is the inner side, and conversely, the side away from the axis of the tool holder 3 is the outer side.

[0034] It is understandable that by installing the scribing tool of this utility model on a three-axis CNC milling machine, scribing lines on the web surface 1 and the inner sidewall 2 can be machined in one clamping, which helps to reduce production costs and improve processing efficiency; in addition, this utility model can simultaneously meet the requirements of economy and quality stability.

[0035] In one embodiment, such as Figure 3 and Figure 4As shown, the second tool holder 5 is connected to the first tool holder 4 by several first screws 7.

[0036] Understandably, multiple first screws 7 together secure the second tool holder 5 to the first tool holder 4.

[0037] In one embodiment, the first tool bar 4 is provided with a plurality of first threaded holes 401, the second tool bar 5 is provided with a plurality of first connecting holes 501, and the shank portions of the plurality of first screws 7 pass through the plurality of first connecting holes 501 and are threadedly connected to the plurality of first threaded holes 401 respectively.

[0038] In one embodiment, the first connecting hole 501 is a stepped hole, and the diameter of the end of the first connecting hole 501 near the first threaded hole 401 matches the major diameter of the shank of the first screw 7, so that the shanks of the multiple first screws 7 can play a certain limiting role on the second tool bar 5; the head of the first screw 7 is located inside the end of the first connecting hole 501 away from the first threaded hole 401, so as to prevent the head of the first screw 7 from being exposed outside the second tool bar 5.

[0039] In one embodiment, the first screw 7 is an internal hex screw so that it can be installed or removed using an internal hex wrench; in another embodiment, the first screw 7 is an M8 screw.

[0040] In one embodiment, the outer side of the first cutter bar 4 is provided with a first plane, and the inner side of the second cutter bar 5 is provided with a second plane for fitting against the first plane, so that the first cutter bar 4 and the second cutter bar 5 have a larger contact plane, thereby making the connection between the first cutter bar 4 and the second cutter bar 5 more stable.

[0041] In one embodiment, a first threaded hole 401 is provided on the inner side of the first plane, and a first connecting hole 501 is provided on the outer side of the second plane.

[0042] In one embodiment, the scribing cutter 6 is fastened to the second cutter shank 5 by a second screw 8, which is an M6 screw.

[0043] In one embodiment, the second blade shank 5 is provided with a second connecting hole 502 for inserting one end of the scribing blade 6 and a second threaded hole 503 for threaded connection of the second screw 8, with one side of the second connecting hole 502 communicating with the second threaded hole 503.

[0044] Understandably, the shank of the second screw 8 can enter the second connecting hole 502 after passing through the second threaded hole 503, so as to fasten the scribing knife 6 in the second connecting hole 502, thereby fixing the scribing knife 6 on the second knife shank 5.

[0045] It should be noted that the diameter of the connecting hole matches the diameter of one end of the scribing tool 6, and the axis of the second threaded hole 503 is preferably perpendicular to the axis of the second tool holder 5.

[0046] In one embodiment, the tool holder 3 is a Morse taper tool holder.

[0047] The method of using this utility model is as follows:

[0048] The scribing tool is installed on a three-axis CNC milling machine, wherein the tool holder 3 is connected to the spindle of the three-axis CNC milling machine;

[0049] Adjust the second screw 8 and the scribing blade 6 to ensure that the tip of the scribing blade 6 is in the center position.

[0050] After the cutting is completed, the scribing knife 6 is locked onto the second tool holder 5 using the second screw 8;

[0051] The spindle of the three-axis CNC milling machine is rotated to the direction corresponding to the mold, and then the spindle of the three-axis CNC milling machine is locked.

[0052] The spindle and engraving tool of the three-axis CNC milling machine are controlled by the CNC program to move in the X, Y and Z directions to process the engraving lines of the inner sidewall 2 and the web surface 1.

[0053] It should be noted that since the spindle does not rotate during the scribing process, the spindle of the three-axis CNC milling machine will lock after rotating to the direction corresponding to the mold.

[0054] In summary, this invention solves the problem of using a three-axis CNC machine tool instead of a five-axis CNC machine tool for mold engraving, reduces processing costs, and solves the problem of requiring multiple flipping operations on a three-axis CNC machine tool to achieve two engravings on the inner wall of the mold, thereby improving production efficiency and quality stability.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A scribing tool, characterized in that, It includes a tool holder (3) for connecting to the spindle of a three-axis CNC milling machine and a first tool bar (4) disposed at the end of the tool holder (3) away from the spindle of the three-axis CNC milling machine. A second tool bar (5) extending away from the end of the first tool bar (4) is detachably connected to the outside of the first tool bar (4). A scribing cutter (6) extending inward is detachably connected to the end of the second tool bar (5) away from the first tool bar (4). The scribing cutter (6) is inclined at the end away from the first tool bar (4).

2. The scribing tool according to claim 1, characterized in that, The second tool holder (5) is connected to the first tool holder (4) by a plurality of first screws (7).

3. A scribing tool according to claim 2, characterized in that, The first tool holder (4) is provided with a plurality of first threaded holes (401), and the second tool holder (5) is provided with a plurality of first connecting holes (501). The shank of the plurality of first screws (7) passes through the plurality of first connecting holes (501) and is threadedly connected to the plurality of first threaded holes (401).

4. A scribing tool according to claim 3, characterized in that, The first connecting hole (501) is a stepped hole. The diameter of the end of the first connecting hole (501) near the first threaded hole (401) matches the major diameter of the shank of the first screw (7). The head of the first screw (7) is located inside the end of the first connecting hole (501) away from the first threaded hole (401).

5. A scribing tool according to claim 4, characterized in that, The first screw (7) is an internal hexagon screw.

6. A scribing tool according to claim 3, characterized in that, The first tool holder (4) has a first plane on its outer side, and the second tool holder (5) has a second plane on its inner side for fitting with the first plane.

7. A scribing tool according to claim 6, characterized in that, The first threaded hole (401) is provided on the inner side of the first plane, and the first connecting hole (501) is provided on the outer side of the second plane.

8. A scribing tool according to claim 1, characterized in that, The scribing blade (6) is fastened to the second blade holder (5) by the second screw (8).

9. A scribing tool according to claim 8, characterized in that, The second cutter bar (5) is provided with a second connecting hole (502) for inserting one end of the scribing cutter (6) and a second threaded hole (503) for threaded connection of the second screw (8). One side of the second connecting hole (502) communicates with the second threaded hole (503).

10. A scribing tool according to claim 1, characterized in that, The tool holder (3) is a Morse taper tool holder.

Images