Stable combination structure of cutter bar and cutter

Abstract

A stable combination structure of a cutter bar and a cutter comprises the cutter bar, the cutter, a fixing piece and a lock cover. A conical hole, a containing hole and a lock hole which are communicated in sequence are formed in the cutter bar; the cutter comprises a clamping hole with a polygonal outline, and a conical joint part of the cutter is inserted into the conical hole of the cutter bar; the fixing piece comprises an abutting block arranged in the containing hole, a screw locking part combined with the lock hole in a screw locking mode and a clamping part with the polygonal section, and the clamping part is clamped in the clamping hole of the cutter. The lock cover is combined with the cutter bar; the clamping portion of the fixing piece is clamped with the clamping hole of the cutter, the abutting block of the fixing piece abuts against the bottom face of the containing hole, the cutter bar and the cutter are stably combined, the problem that an existing cutter bar and an existing cutter are prone to relative rotation, and negative influences are brought to the machining quality can be solved, and the machining efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to a processing device, in particular to a stable combination structure of a tool bar and a tool, which can stably combine the tool bar and the tool and improve processing efficiency and quality. Background Art

[0002] In the prior art, when a workpiece is cut or drilled, a machining spindle is required to drive a tool for machining; and a tool bar is required to connect the tool and the machining spindle.

[0003] Conventional tool bar and tool secure coupling devices include a tool bar and a tool. The tool bar is rod-shaped and has two opposing ends. One end of the tool bar is equipped with a blade, and the other end is secured to the interior of the tool bar. However, when a spindle drives the tool bar and tool bar to cut or drill, the workpiece being processed exerts significant resistance on the tool bar and tool bar, causing the tool bar and the rod-shaped tool bar to easily rotate relative to each other.

[0004] However, the tool bar and the tool that are prone to relative rotation result in poor processing efficiency and even have a negative impact on the processing quality of the workpiece. Therefore, it can be seen that there is still room for improvement and advancement in the existing tool bar and tool secure connection device. Utility Model Content

[0005] The purpose of the present invention is to solve the above-mentioned problems of the prior art and to provide a stable combination structure of a tool rod and a tool, so as to achieve the purpose of improving processing efficiency and quality.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The stable combination structure of the tool bar and the tool includes the tool bar, the tool, the fixing part and the locking cover which cooperate with each other; wherein:

[0008] The knife bar includes two opposite ends, a receiving hole, a tapered hole, and a locking hole; the receiving hole is provided inside the knife bar and includes a bottom surface; the tapered hole extends from one end of the knife bar to the receiving hole and is connected to the receiving hole, and the diameter of the tapered hole gradually decreases toward the receiving hole; the locking hole extends from the other end of the knife bar to the bottom surface of the receiving hole, is connected to the receiving hole, and includes an internal thread;

[0009] A cutting tool includes a coupling portion, an extension rod, a locking hole, and at least one processing piece; the coupling portion is tapered and includes a pressing end and an insertion end positioned opposite each other, the insertion end being inserted into the tapered hole, and the outer diameter of the coupling portion gradually decreases from the pressing end toward the insertion end; the locking hole extends from the insertion end toward the pressing end and includes a polygonal profile; the extension rod protrudes from the pressing end and includes a processing end remote from the coupling portion; the at least one processing piece is fixed to the processing end;

[0010] The fixing member is located inside the knife rod and includes a stop block, a screw locking portion and a clamping portion; the stop block is block-shaped and includes a first end face and a second end face that are positioned opposite to each other, and the outer diameter of the stop block is smaller than the aperture of the receiving hole; the screw locking portion is provided on the first end face of the stop block and includes an external thread, the screw locking portion is screwed into the locking hole, the first end face abuts against the bottom surface of the receiving hole, and the second end face forms a distance with the insertion end of the coupling portion; the clamping portion is provided on the second end face of the stop block and includes a polygonal cross-section, the clamping portion is inserted into the clamping hole and clamped with the clamping hole;

[0011] The locking cover is combined with the knife rod, pressed against the pressing end and includes a through hole; the extension rod and the processing piece pass through the through hole.

[0012] Furthermore, the fixing member includes two wrench holes; the two wrench holes are respectively arranged in the screw locking portion and the clamping portion, respectively extend along the screw locking portion and the clamping portion, and each of the wrench holes includes a polygonal outline.

[0013] Furthermore, the outline of each wrench hole is hexagonal.

[0014] Furthermore, the tool includes an inlet channel, a connecting channel and two outlet channels; the inlet channel extends from the bottom of the engaging hole toward the processing end; the connecting channel connects the inlet channel and extends toward the processing end; the two outlet channels are close to the processing end and are connected to the connecting channel; the fixing part includes a connecting hole, which is arranged inside the block and connects the two wrench holes.

[0015] Furthermore, each of the processing parts is a cutting blade.

[0016] Furthermore, the knife rod includes a screw locking section, which is located at the same end of the knife rod as the tapered hole and is provided with an external thread; the locking cover is provided with an internal thread and is screw-locked to the screw locking section.

[0017] Furthermore, the extension rod is a slender conical rod body, and the outer diameter of the extension rod gradually decreases toward the processed end of the extension rod.

[0018] Furthermore, the cross section of the engaging portion is hexagonal, and the outline of the engaging hole is hexagonal corresponding to the cross section of the engaging portion.

[0019] Furthermore, the cross section of the engaging portion is pentagonal, and the outline of the engaging hole is set to be pentagonal corresponding to the cross section of the engaging portion.

[0020] Furthermore, the cross section of the engaging portion is quadrilateral, and the outline of the engaging hole is quadrilateral corresponding to the cross section of the engaging portion.

[0021] By adopting the above technical solution, compared with the prior art, the present invention fixes the fixing part inside the tool rod, inserts the locking portion of the fixing part into the locking hole of the tool and locks it, and makes the first end face of the stop block of the fixing part abut against the bottom surface of the receiving hole, so that the tool can resist the reaction force during processing and is not easy to rotate relative to the tool rod, making the present invention more efficient during processing and further improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the first preferred embodiment of the utility model.

[0023] Figure 2 This is a schematic diagram of the exploded components of the first preferred embodiment of the present invention.

[0024] Figure 3 It is a three-dimensional schematic diagram of the positioning member of the first preferred embodiment of the utility model.

[0025] Figure 4 It is a side view schematic diagram of the first preferred embodiment of the utility model.

[0026] Figure 5 It is a partial cross-sectional schematic diagram of the first preferred embodiment of the utility model.

[0027] Figure 6 It is a cross-sectional schematic diagram along the AA cutting line of the first preferred embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of partial component decomposition of the first preferred embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of partial component decomposition of a second preferred embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of partial component decomposition of a third preferred embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of partial component decomposition of a fourth preferred embodiment of the present invention.

[0032] Figure 11 It is a cross-sectional schematic diagram of a second preferred embodiment of the present utility model.

[0033] Figure 12 It is a cross-sectional schematic diagram of a third preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0034] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0035] like Figure 1-12 Shown is an embodiment of the present utility model.

[0036] In order to understand the technical features and practical effects of the present invention in detail and to realize the invention according to the present invention, a preferred embodiment shown in the drawings is further described in detail as follows:

[0037] like Figures 1 to 7 As shown, a preferred embodiment of the stable combination structure of the knife bar and the cutting tool of the present invention includes a knife bar 10, a cutting tool 20, a fixing member 30 and a locking cover 40.

[0038] like Figures 1 to 7 As shown, the tool bar 10 includes two opposite ends, a receiving hole 11, a tapered hole 12, a locking hole 13, and a screw-locking section 14. The receiving hole 11 is located inside the tool bar 10 and includes a bottom surface 111. The tapered hole 12 extends from one end of the tool bar 10 to the receiving hole 11, and the diameter of the tapered hole 12 gradually decreases toward the receiving hole 11. The locking hole 13 extends from the other end of the tool bar 10 to the bottom surface 111 of the receiving hole 11 and includes an internal thread. The screw-locking section 14 is located at the same end of the tool bar 10 as the tapered hole 12 and is provided with an external thread.

[0039] like Figures 1 to 7 As shown, the tool 20 includes a coupling portion 21 , an extension rod 22 , a locking hole 23A, an inlet channel 24 , a connecting channel 25 , two outlet channels 26 and two processing parts 27 . Among them, the connecting portion 21 is conical and includes a pressing end and an insertion end positioned opposite to each other. The insertion end of the connecting portion 21 is inserted into the tapered hole 12, and the outer diameter of the connecting portion 21 gradually decreases from the pressing end of the connecting portion 21 toward the insertion end of the connecting portion 21; the extension rod 22 protrudes from the pressing end of the connecting portion 21 and includes a processed end away from the connecting portion 21; the engaging hole 23A extends from the insertion end of the connecting portion 21 toward the pressing end of the connecting portion 21, and the engaging hole 23A includes a polygonal outline; the inlet channel 24 extends from the bottom of the engaging hole 23A toward the processed end of the extension rod 22; the connecting flow channel 25 connects the inlet channel 24 and extends toward the processed end of the extension rod 22; the two outlet channels 26 are close to the processed end of the extension rod 22 and are connected to the connecting flow channel 25; the two processed parts 27 are provided at the processed end of the extension rod 22.

[0040] like Figures 1 to 7 As shown, the engaging hole 23A, the inlet channel 24 and the communication channel 25 are coaxially connected.

[0041] like Figures 1 to 7 As shown, the fixing member 30 is located inside the knife bar 10 and includes a stopper 31, a screw lock portion 32, a clamping portion 33A, two wrench holes 34 and a connecting hole 35; the stopper 31 is block-shaped and includes a first end face 311 and a second end face 312 that are positioned opposite to each other; the screw lock portion 32 is provided on the first end face 311 of the stopper 31 and includes an external thread, and the screw lock portion 32 is screwed to the locking hole 13 of the knife bar 10, so that the first end face 311 of the stopper 31 is against the bottom surface 111 of the receiving hole 11; the clamping portion 33A is provided on the second end face 31 of the stopper 31 The surface 312 includes a polygonal cross-section, and the locking portion 33A is inserted into the locking hole 23A of the tool 20; the two wrench holes 34 are respectively provided in the screw locking portion 32 and the locking portion 33A, and extend along the screw locking portion 32 and the locking portion 33A, respectively, and each wrench hole 34 includes a polygonal outline. In the utility model, the outline of each wrench hole 34 corresponds to a hexagonal wrench and is set to be hexagonal, which is convenient for the user to disassemble and assemble the fixing member 30 with a hexagonal wrench; the connecting hole 35 is provided inside the block 31 and coaxially connects the two wrench holes 34.

[0042] like Figures 1 to 7 As shown, in the present invention, the outer diameter of the block 31 of the fixing member 30 is smaller than the aperture of the receiving hole 11 of the tool rod 10, so that the screw locking portion 32 of the fixing member 30 can be smoothly screwed and installed in the locking hole 13 of the tool rod 10, and the first end face 311 of the block 31 is abutted against the bottom face 111 of the receiving hole 11, and a distance is formed between the insertion end of the coupling portion 21 of the tool 20 and the second end face 312 of the block 31 of the fixing member 30.

[0043] like Figures 1 to 7 As shown, in the first preferred embodiment of the present invention, the cross-section of the engaging portion A33 of the fixing member 30 is hexagonal, and the contour of the engaging hole 23A of the tool 20 corresponding to the cross-section of the engaging portion 33A is also set to be hexagonal, so that the engaging portion 33A and the engaging hole 23A can be engaged with each other.

[0044] like Figures 1 to 7 As shown, the locking cover 40 includes an internal thread and a through hole 41; the locking cover 40 is screwed to the screw locking section 14 of the tool rod 10, and the locking cover 40 is pressed against the pressing end of the coupling portion 21 of the tool 20; the extension rod 22 of the tool 20 and the two processed parts 27 pass through the through hole 41 of the locking cover 40.

[0045] Compared to existing tool bar and tool secure coupling devices, the present invention provides a fixing member 30 fixed to the interior of the tool bar 10 and having a polygonal-shaped engaging portion 33A. Furthermore, an engaging hole 23A is provided corresponding to the insertion end of the coupling portion 21 of the tool 20. The engaging portion 33A and the engaging hole 23A engage with each other to prevent relative rotation between the tool 20 and the tool bar 10. This allows the tool 20 to counteract the reaction force exerted by the workpiece when machining the workpiece, making the present invention more efficient and further improving machining quality.

[0046] Furthermore, the cutting fluid can cool the two workpieces 27 through the connecting hole 35 of the fixing member 30 , the inlet channel 24 , the connecting channel 25 and the two outlet channels of the tool 20 .

[0047] like Figure 8 and 11 As shown, the second preferred embodiment of the present invention is similar to the first preferred embodiment, and the difference between the two is that the cross-section of the engaging portion 33B of the fixing member 30 and the outline of the engaging hole 23B of the tool 20 are set to be pentagonal, so that the engaging portion 33B and the engaging hole 23B can be locked with each other, allowing the tool 20 to be firmly combined with the tool rod 10 through the fixing member 30, so that the present invention can perform stable and efficient processing.

[0048] like Figure 9 and 12 As shown, the third preferred embodiment of the present invention is similar to the first and second preferred embodiments, with the only difference being that the cross-section of the engaging portion 33C of the fixing member 30 and the contour of the engaging hole 23C of the tool 20 are set to be a quadrilateral, so that the engaging portion 33C and the engaging hole 23C can be locked with each other, allowing the present invention to perform stable and efficient processing.

[0049] In practice, as long as the engaging portions 33A, 33B, 33C can be engaged with the engaging holes 23A, 23B, 23C, the present invention does not impose any specific restrictions on the cross-sections of the engaging portions 33A, 33B, 33C of the fixing member 30 and the profiles of the engaging holes 23A, 23B, 23C of the tool 20.

[0050] In the first, second and third preferred embodiments of the present invention, each of the processing members 27 is a cutting blade for processing.

[0051] like Figure 10 As shown, the fourth preferred embodiment of the present invention is similar to the first preferred embodiment, and the only difference between the two is that the extension rod 22 of the tool 20 is a slender conical rod, and the outer diameter of the extension rod 22 gradually decreases toward the processing end of the extension rod 22; furthermore, the processing part 27 provided on the extension rod 22 is a drill bit.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any person with ordinary knowledge in the technical field can, without departing from the scope of the technical solution proposed by the present invention, make partial changes or modifications to the technical content disclosed in the present invention and make equivalent embodiments without departing from the technical solution content of the present invention. All of these remain within the scope of the technical solution of the present invention.

Claims

1. The stable combination structure of the tool bar and the tool is characterized by: It includes a tool bar, a tool, a fixing part and a locking cover that cooperate with each other; wherein: The knife bar includes two opposite ends, a receiving hole, a tapered hole, and a locking hole; the receiving hole is provided inside the knife bar and includes a bottom surface; the tapered hole extends from one end of the knife bar to the receiving hole and is connected to the receiving hole, and the diameter of the tapered hole gradually decreases toward the receiving hole; the locking hole extends from the other end of the knife bar to the bottom surface of the receiving hole, is connected to the receiving hole, and includes an internal thread; A cutting tool includes a coupling portion, an extension rod, a locking hole, and at least one processing piece; the coupling portion is tapered and includes a pressing end and an insertion end positioned opposite each other, the insertion end being inserted into the tapered hole, and the outer diameter of the coupling portion gradually decreases from the pressing end toward the insertion end; the locking hole extends from the insertion end toward the pressing end and includes a polygonal profile; the extension rod protrudes from the pressing end and includes a processing end remote from the coupling portion; the at least one processing piece is fixed to the processing end; The fixing member is located inside the knife rod and includes a stop block, a screw locking portion and a clamping portion; the stop block is block-shaped and includes a first end face and a second end face that are positioned opposite to each other, and the outer diameter of the stop block is smaller than the aperture of the receiving hole; the screw locking portion is provided on the first end face of the stop block and includes an external thread, the screw locking portion is screwed into the locking hole, the first end face abuts against the bottom surface of the receiving hole, and the second end face forms a distance with the insertion end of the coupling portion; the clamping portion is provided on the second end face of the stop block and includes a polygonal cross-section, the clamping portion is inserted into the clamping hole and clamped with the clamping hole; The locking cover is combined with the knife rod, pressed against the pressing end and includes a through hole; the extension rod and the processing piece pass through the through hole.

2. The stable combination structure of the tool bar and the tool according to claim 1, characterized in that: The fixing member includes two wrench holes; the two wrench holes are respectively arranged in the screw locking portion and the clamping portion, respectively extend along the screw locking portion and the clamping portion, and each of the wrench holes includes a polygonal outline.

3. The stable combination structure of the tool bar and the tool according to claim 2, characterized in that: The outline of each wrench hole is hexagonal.

4. The stable combination structure of the tool bar and the tool according to claim 2, characterized in that: The tool includes an inlet channel, a connecting channel and two outlet channels; the inlet channel extends from the bottom of the engaging hole toward the processing end; the connecting channel connects to the inlet channel and extends toward the processing end; the two outlet channels are close to the processing end and are connected to the connecting channel; the fixing part includes a connecting hole, which is arranged inside the block and connects the two wrench holes.

5. The stable combination structure of the tool bar and the tool according to claim 4, characterized in that: Each of the processing parts is a cutting blade.

6. The stable combination structure of the knife bar and the knife according to claim 5, characterized in that: The knife rod comprises a screw locking section, which is located at the same end of the knife rod as the tapered hole and is provided with an external thread; the locking cover is provided with an internal thread and is screw-locked with the screw locking section.

7. The stable combination structure of the knife bar and the knife according to claim 1, characterized in that: The extension rod is a slender conical rod body, and the outer diameter of the extension rod gradually decreases toward the processing end of the extension rod.

8. The stable combination structure of the tool bar and the tool according to any one of claims 1 to 7, characterized in that: The cross section of the engaging portion is hexagonal, and the outline of the engaging hole is hexagonal corresponding to the cross section of the engaging portion.

9. The stable combination structure of the tool bar and the tool according to any one of claims 1 to 7, characterized in that: The cross section of the engaging portion is pentagonal, and the outline of the engaging hole is set to be pentagonal corresponding to the cross section of the engaging portion.

10. The stable combination structure of the tool bar and the tool according to any one of claims 1 to 7, characterized in that: The cross section of the engaging portion is quadrilateral, and the outline of the engaging hole is quadrilateral corresponding to the cross section of the engaging portion.

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