CN209886709U - Machine presss from both sides cutter - Google Patents

Abstract

The utility model relates to the technical field of machining tools, in particular to a machine-clamped cutting tool, which comprises a blade and a shank. A blade is arranged in the groove, and a pressing bar for vertically limiting the blade is arranged in the second installation slot; a clamping screw for fixing the pressing bar is arranged between the tool bar and the pressing bar; The cutter bar is also provided with a limit groove, and the limit groove is provided with a knife washer for laterally limiting the blade. rod. The cutting knife can effectively solve the problems that the blade cannot be re-sharpened for use after the blade is worn, the blade fixing effect is not good, the rigidity of the blade bar is poor and the blade replacement is inconvenient.

Description

A machine clip cutting knife

technical field

The utility model relates to the technical field of machining tools, in particular to a machine clip cutting tool.

Background technique

The cutting knife is mainly used to cut off the workpiece or cut the annular groove on the workpiece. Its cutter head is long and narrow, the size of the blade is small, and the rigidity is poor. It is prone to vibration during cutting, which in turn causes abnormal wear of the blade and affects the service life of the blade.

In the prior art, the Chinese utility model patent document whose publication number is CN204262385U and whose authorization announcement date is April 15, 2015 is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: A cutter includes a cutter body and a cutter bar, the cutter body includes a cutter body and a cutter head, the cutter head is arranged at the front end of the cutter body, and two sides of the cutter head are provided with symmetrically distributed main cutting edges, the main cutting edge The included angle of the tool tip formed by the cutting edge is 30-150°, the relief angle of the tool head is 0-30°, the front end of the tool bar is provided with a blade groove, and the tool body is fitted to the blade. and fixed in the slot, the cutter bar further includes a locking screw, and the cutter body and the blade slot are fixed by the locking screw.

In the actual use process of the above technical solution, the following problems will occur:

(1) The force of the clamping cutting knife to clamp the blade is only provided by the screw, the clamping force is not very large, and it is difficult to greatly increase the cutting amount.

(2) The cutter body and the insert groove are fixed by locking screws. When the cutter body needs to be replaced, the locking screws need to be loosened. After the replacement is completed, the locking screws need to be fixed. During this process, it is not easy to locate the cutter body. The tool body is prone to discomfort such as installation angle.

(3) After the cutter head is worn out, the cutter head cannot be re-sharpened for use, only the cutter head can be replaced, the cutter head utilization rate and the service life are short.

(4) The tool body is used in conjunction with the tool holder, and the scope of use is narrow.

(5) Only the tool holder supports the cutter head, resulting in poor rigidity of the tool holder and easy vibration during cutting.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the utility model proposes a machine clip cutting knife, which can effectively solve the defects that the blade cannot be re-sharpened after the blade is worn, the blade fixing effect is not good, and the blade replacement is inconvenient. The repeated sharpening of the blade is used, thereby greatly improving the utilization rate of the blade.

The utility model is realized by adopting the following technical solutions:

A machine clip cutting knife, comprising a blade and a knife rod, characterized in that: the knife rod is provided with a first installation groove and a second installation groove that communicate with each other, the first installation groove is provided with a blade, and the second installation groove is provided in the first installation groove. The installation groove is provided with a pressing rod for vertically limiting the blade; a clamping screw for fixing the pressing rod is arranged between the knife rod and the pressing rod; a limiting groove is also set on the knife rod The limit groove is provided with a knife washer for laterally limiting the blade, and the knife bar is also provided with a spring groove communicated with the limit groove, and the spring groove transversely runs through the entire knife bar.

The cutter bar is also provided with an adjustment hole communicated with the spring groove.

A threaded hole and a waist-shaped hole that cooperate with each other are arranged between the tool bar and the tool-pressing bar, and the clamping screw is inserted into the threaded hole through the waist-shaped hole.

An adjusting screw is also connected with a thread on the cutter bar, and one end of the adjusting screw is abutted against the rear end face of the cutter bar.

An adjusting screw is also provided at the tail end of the knife pressing rod, and the end face of the adjusting screw is abutted against the knife rod.

Compared with the prior art, the beneficial effects of the present utility model are shown in:

1. The utility model includes a cutter bar, the cutter bar is provided with a blade, the cutter bar is also provided with a pressure cutter bar that vertically limits the blade, and the cutter bar is also provided with a limit slot, the limit slot A knife washer for laterally limiting the blade is arranged inside, and the position of the blade is limited by the knife-pressing rod and the knife washer to realize the fixation of the blade. At the same time, the knife rod is also provided with a spring groove running through the entire knife rod. When the tool is installed on the machine tool, the screw on the fixture squeezes the tool shank. Due to the existence of the spring groove, the tool shank is slightly deformed to squeeze the tool gasket, complete the tightening of the blade, ensure the normal use of the tool, and the blade is fixed. Works well.

At the same time, the blade is installed in the first installation groove, the lateral limit is realized by the knife washer, and the vertical limit is realized by the pressing bar. In the limit groove, when the blade is worn, the blade can be replaced at any time according to the wear condition of the blade or the blade can be repeatedly sharpened for use, and the tool shank can be reused, thereby greatly reducing the use cost of the tool.

2. The utility model is also provided with an adjusting hole communicating with the spring groove, through the adjusting hole, the stress at the corner of the end of the spring groove is reduced, so as to prevent the cutter bar from being crushed and prolong the service life of the cutter bar.

3. The utility model is also provided with an adjusting screw, and the end face of the adjusting screw is against the cutter bar. When the adjusting screw moves to one side of the cutter bar, there is a reverse force on the pressing cutter bar. The clamping screw rotates for the rotating shaft, thereby enhancing the pressing force between the pressing bar and the blade, and improving the tightening effect of the pressing bar on the blade.

Description of drawings

The present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments of the description, wherein:

Fig. 1 is the external structure schematic diagram of the utility model;

Fig. 2 is the A-A sectional view in the accompanying drawing 1 of the description of the utility model;

Marked in the figure:

1. Blade, 2. Pressing bar, 3. Clamping screw, 4. Tool bar, 5. Knife washer, 6. Adjusting screw, 7. Adjusting screw, 8. Waist hole, 9. Limit slot, 10 , Adjustment hole, 11, Elastic groove.

Detailed ways

Example 1

As a basic embodiment of the present utility model, the present utility model includes a machine clip cutting knife, including a blade 1 and a knife bar 4, the knife bar 4 is provided with a first installation groove and a second installation groove that communicate with each other. The first installation groove is provided with a blade 1, and the second installation groove is provided with a press bar 2 for vertically limiting the blade 1; between the knife bar 4 and the press bar 2, a press bar for fixing the press is provided. The clamping screw 3 of the rod 2; the cutter rod 4 is also provided with a limit groove 9, and the limit groove 9 is provided with a knife washer 5 for laterally limiting the blade 1, and the knife rod 4 is also provided with A spring groove communicated with the limiting groove 9 , and the spring groove transversely runs through the entire cutter bar 4 .

Example 2

As a preferred embodiment of the present utility model, the present utility model includes a machine clip cutting knife, including a blade 1 and a knife bar 4, and the knife bar 4 is provided with a first installation groove and a second installation groove that communicate with each other, The first installation groove is provided with a blade 1, and the second installation groove is provided with a press bar 2 for vertically limiting the blade 1; The clamping screw 3 of the cutter bar 2; the cutter bar 4 is also provided with a limiting slot 9, and the limiting slot 9 is provided with a cutter washer 5 for laterally limiting the blade 1, and the cutter bar 4 is also provided with A spring groove communicated with the limiting groove 9 is provided, and the spring groove transversely penetrates the entire cutter bar 4 , and the cutter bar 4 is further provided with an adjustment hole 10 communicated with the spring groove. The limiting groove 9 can be a dovetail groove, and the knife washer 5 is provided with a trapezoidal slide rail corresponding to the dovetail groove.

A threaded hole and a waist-shaped hole that cooperate with each other are provided between the cutter bar 4 and the tool-pressing bar 2, and the clamping screw 3 is inserted into the threaded hole through the waist-shaped hole.

Example 3

As another preferred embodiment of the present utility model, the present utility model includes a machine clip cutting knife, including a blade 1 and a knife shank 4, and the knife shank 4 is provided with a first installation groove and a second installation groove that communicate with each other , the first installation groove is provided with a blade 1, and the second installation groove is provided with a pressing rod 2 for vertically limiting the blade 1; The clamping screw 3 for fixing the knife bar 2; the knife bar 4 is also provided with a limit groove 9, and the limit groove 9 is provided with a knife washer 5 for laterally limiting the blade 1. A spring groove communicating with the limiting groove 9 is also provided, and the spring groove transversely runs through the entire cutter bar 4 .

The cutter bar 4 is also connected with an adjusting screw 7 , and one end of the adjusting screw 7 abuts against the rear end surface of the cutter bar 2 . An adjusting screw 6 is also provided at the tail end of the knife pressing rod 2 , and the end surface of the adjusting screw 6 abuts against the knife rod 4 .

The limiting groove 9 may be a dovetail groove, and the knife washer 5 is provided with a trapezoidal slide rail corresponding to the dovetail groove. The trapezoidal slide rail and the knife washer 5 are integrally formed, the structure is simpler, and the overall stability of the cutting knife is good, preventing the slide rail from separating from the knife washer 5 due to cutting force or vibration.

In order to make the cutting smooth, the chips are easy to remove, the tool has high durability, and the machined surface is straight. With some exceptions, various forms of cutting edges can be used, such as herringbone edge, double transition edge, arc edge, etc.

Example 4

As the best embodiment of the present utility model, referring to the accompanying drawings 1 and 2 of the specification, the utility model includes a machine clip cutting knife, including a blade 1 and a knife bar 4, and the knife bar 4 is provided with interconnected The first installation groove and the second installation groove, the first installation groove is provided with a blade 1, and the second installation groove is provided with a pressure knife bar 2 for vertically limiting the blade 1; A clamping screw 3 for fixing the blade 2 is arranged between the pressing bars 2; a limiting groove 9 is also provided on the said tool bar 4, and a shim for laterally limiting the blade 1 is arranged in the limiting groove 9 The blade 5 is further provided with a spring groove communicating with the limiting groove 9 on the knife rod 4 , and the spring groove transversely runs through the entire knife rod 4 .

The cutter bar 4 is also provided with an adjustment hole 10 that communicates with the spring groove. The stress at the corner of the end of the spring groove is reduced through the adjustment hole 10, so as to prevent the cutter bar 4 from being crushed and prolong the service life of the cutter bar 4.

A threaded hole and a waist-shaped hole that cooperate with each other are provided between the cutter bar 4 and the tool-pressing bar 2, and the clamping screw 3 is inserted into the threaded hole through the waist-shaped hole. The cutter bar 4 is also connected with an adjusting screw 7 , and one end of the adjusting screw 7 abuts against the rear end surface of the cutter bar 2 . An adjusting screw 6 is also provided at the tail end of the knife pressing rod 2 , and the end surface of the adjusting screw 6 abuts against the knife rod 4 . Since the end face of the adjusting screw 6 abuts on the cutter bar 4, when the adjusting screw 6 moves toward the cutter bar 4, there is a reverse force on the pressing bar 2, and the pressing bar 2 clamps the screw 3 In order for the rotating shaft to rotate, the pressing force between the pressing bar 2 and the blade 1 is enhanced, and the tightening effect of the pressing bar 2 on the blade 1 is improved.

The material selected for the blade 1 may be YT15, and the blade shank 4 and the blade gasket 5 are quenched and tempered 45-50HRC or 45 steel. The cutting edge of the blade 1 can be a herringbone edge, a double transition edge or a circular arc edge.

The existing cutting knife generally needs a positive rake angle of 15 degrees, and it is necessary to sharpen the cemented carbide tool material. The application can design a 5-degree angle on the tool bar 4, which is equivalent to when the blade 1 is installed on the tool bar 4. There is a positive rake angle of 5 degrees, which can reduce the workload of sharpening cemented carbide, reduce the consumption of tool materials, and improve the service life of the tool.

In the present application, the position of the blade 1 is limited by the cutter bar 2 and the cutter washer 5, so as to realize the fixation of the blade 1. At the same time, the cutter bar 4 is also provided with a spring groove that runs through the entire cutter bar 4. When the tool is installed on the machine tool , The screw on the fixture squeezes the cutter bar 2. Due to the existence of the spring groove, the cutter bar 4 is slightly deformed to squeeze the cutter washer 5 to complete the tightening of the blade 1 and ensure the normal use of the cutter. The blade 1 of the utility model can be replaced at any time according to the wear condition, and the blade shank 4 can be reused, thereby greatly reducing the use cost of the tool. And the use of this machine to clamp the cutting knife can improve the work efficiency by 3-5 times, the two sides of the processed parts are straight, and the roughness can be stabilized at Ra12.5-6.3 microns.

To sum up, after reading the documents of the present utility model by those of ordinary skill in the art, various other corresponding transformation schemes made without creative mental work according to the technical solutions and technical ideas of the present utility model belong to the protection of the present utility model. range.

Claims (5)

1. A machine clip cutting knife, comprising a blade (1) and a knife rod (4), characterized in that: the knife rod (4) is provided with a first installation groove and a second installation groove that communicate with each other, the A blade (1) is arranged in the first installation groove, and a pressing rod (2) for vertically limiting the blade (1) is arranged in the second installation groove; the blade (4) and the pressing rod ( 2) A clamping screw (3) for fixing the cutter bar (2) is arranged between; the cutter bar (4) is also provided with a limit groove (9), and a pair of blades is arranged in the limit groove (9). (1) The knife washer (5) for lateral limiting, the knife rod (4) is also provided with a spring groove communicating with the limiting groove (9), and the spring groove transversely runs through the entire knife rod (4). 2 . The machine clip cutting knife according to claim 1 , characterized in that: the knife rod ( 4 ) is further provided with an adjustment hole ( 10 ) that communicates with the spring groove. 3 . 3 . The machine clip cutting knife according to claim 2 , wherein a threaded hole and a waist-shaped hole that cooperate with each other are provided between the cutter bar (4) and the pressing bar (2). 3 . Insert the clamping screw (3) through the waist hole into the threaded hole. 4. A machine clip cutting knife according to claim 1 or 3, characterized in that: an adjusting screw (7) is also connected with a thread on the knife bar (4), and one end of the adjusting screw (7) is Abut against the rear end face of the cutter bar (2). 5 . The machine clip cutting knife according to claim 4 , characterized in that: the tail end of the pressing rod ( 2 ) is also provided with an adjusting screw ( 6 ), and the end face of the adjusting screw ( 6 ) is threaded. 6 . against the shank (4).