CN212350490U - Deburring cutter - Google Patents

Abstract

The utility model discloses a deburring cutter, which comprises a cutter bar, a blade, a spring piece, a pin and a positioning pin; a first connecting part and a second connecting part extend from one end of the cutter bar, an accommodating groove is formed between the first connecting part and the second connecting part, and a pin is accommodated in the accommodating groove; the side surface of the pin is provided with an opening, the blade comprises a connecting ring and a cutting part, the blade is sleeved on the side surface of the pin through the connecting ring, and the opening is positioned in the connecting ring when the blade is sleeved on the side surface of the pin; one end of the spring piece is provided with a positioning hole, the side surface of the cutter bar is provided with a positioning pin hole, the positioning pin hole is aligned with the positioning hole, the positioning pin penetrates through the positioning hole and the positioning pin hole, one end of the spring piece is fixed with the cutter bar through the positioning pin, and the other end of the spring piece is embedded into the connecting ring and is embedded into the opening of the pin. The utility model discloses in, the burr in positive and negative drill way is got rid of in burring cutter one-time operation realization, has improved burring efficiency, and detachable design has also improved the holistic life of cutter.

Description

Deburring cutter

Technical Field

The utility model relates to a machinery drilling field, in particular to burring cutter.

Background

In the mechanical industry, the surfaces of workpieces are mostly provided with through-holes, which can be used for further assembly or processing between the workpieces.

The through hole is usually formed by a milling and drilling machine, the inner wall and the edge of the hole cannot be guaranteed to be smooth, a plurality of burrs are left on the inner wall and the edge of the hole, the technical requirements of products cannot be met if the burrs are left on the inner wall and the edge of the hole, and further assembly of a workpiece is also influenced.

In the related art, various deburring tools are provided for removing the above-mentioned burrs, and such tools are rotated to remove the burrs from the side walls of the through-hole in use. However, the conventional deburring tool is expensive and not durable, and the complex through hole needs to be repeatedly implemented or multiple types of deburring tools are combined for use, so that the efficiency is low and the side wall of the through hole is possibly scratched.

SUMMERY OF THE UTILITY MODEL

The utility model provides a deburring cutter. The technical scheme is as follows:

the utility model provides a deburring cutter, deburring cutter includes: the cutter comprises a cutter bar, a blade, a spring piece, a pin and a positioning pin;

a first connecting part and a second connecting part extend from one end of the cutter bar, a containing groove is formed between the first connecting part and the second connecting part, and the pin is contained in the containing groove;

the side surface of the pin is provided with an opening, the blade comprises a connecting ring and a cutting part, the blade is sleeved on the side surface of the pin through the connecting ring, and the opening is positioned in the connecting ring when the blade is sleeved on the side surface of the pin;

one end of the spring piece is provided with a positioning hole, the side surface of the cutter bar is provided with a positioning pin hole, the positioning pin hole is aligned with the positioning hole, the positioning pin penetrates through the positioning hole and the positioning pin hole, one end of the spring piece is fixed with the cutter bar through the positioning pin, the other end of the spring piece is embedded into the connecting ring and is simultaneously embedded into the opening of the pin, and the spring piece is used for adjusting the cutting capacity of the blade.

Optionally, a side surface of the cutting portion is provided with a forward cutting edge and a reverse cutting edge, the forward cutting edge is used for removing burrs of the forward orifice, and the reverse cutting edge is used for removing burrs of the reverse orifice;

the thickness of first connecting portion is greater than the thickness of second connecting portion, the blade cover is located during the side of pin, the forward cutting edge with reverse cutting edge is close to in first connecting portion, just the forward cutting edge with the cutting edge plane at reverse cutting edge place with the coincidence of the central line of cutter arbor.

Optionally, the cutting top of the cutting portion is designed in a circular arc manner.

Optionally, the forward cutting edge is located on the rake face, and the reverse cutting edge is located on the flank face;

the clearance angle of the front cutter face and the clearance angle of the rear cutter face are larger than the tangent angle of the orifice curve.

Optionally, the deburring tool further comprises a pressure regulating screw, and the tool bar is provided with a corresponding screw hole;

the pressure regulating screw is installed in the screw hole, and is right the spring leaf produces pressure, and the spring leaf under the pressure effect is right the blade produces elastic force, wherein, the degree of screwing of pressure regulating screw with elastic force is positive correlation.

Optionally, the spring plate comprises a front end portion and a rear end portion, and the thickness of the front end portion is smaller than that of the rear end portion;

the front end portion is embedded in the connecting ring of the blade and in the opening of the pin.

Optionally, the first connecting portion is provided with a first opening, and the second connecting portion is provided with a second opening;

one end of the pin is riveted with the first opening, and the other end of the pin is riveted with the second opening.

In summary, the utility model provides a deburring tool, each component of which can be detached and replaced for use, so that the service life of the whole tool is prolonged, and the production cost is reduced; for the main assembly blade, the connected pin can rotate and move when being subjected to external force, so that the deburring cutter can easily enter and exit the hole with smaller caliber; in addition, the deburring cutter can remove burrs in the positive and negative orifices through one-time operation, numerical control operation in the related technology is further simplified, and deburring operation efficiency and convenience are improved.

Drawings

Fig. 1 shows a schematic structural diagram of a deburring tool provided by the present invention;

fig. 2 shows a schematic structural diagram of a cutter bar provided by the present invention;

fig. 3 shows a schematic structural diagram of a pin provided by the present invention;

fig. 4 shows a schematic structural diagram of a blade provided by the present invention;

fig. 5 is a schematic structural diagram of a spring plate according to the present invention;

fig. 6 is a schematic view showing a cutting process provided in the related art;

fig. 7 shows a schematic diagram of a cutting process provided by the present invention;

fig. 8 shows a schematic structural view of another blade provided by the present invention;

fig. 9 shows a schematic view of the blade mounting position provided by the present invention;

fig. 10 shows another schematic diagram of a cutting process provided by the present invention;

fig. 11 shows a schematic diagram of a cutting effect provided by the present invention;

fig. 12 is a schematic structural diagram of a pressure adjusting screw provided by the present invention;

fig. 13 is a schematic view illustrating a blade swing range provided by the present invention;

fig. 14 shows a schematic structural diagram of another tool bar provided by the present invention.

Wherein the reference numerals in the drawings are explained as follows:

100: a deburring cutter; 110: a cutter bar; 111: a first connection portion;

112: a second connecting portion; 113: a containing groove; 114: a positioning pin hole;

115: a first opening; 116: a second opening; 120: a pin;

121: an opening; 130: a blade; 131: a connecting portion;

132: a cutting portion; 133: a forward cutting edge; 134: a reverse cutting edge;

135: cutting the top; 140: a spring plate; 141: positioning holes;

150: positioning pins; 160: a pressure regulating screw; 161: and (4) screw holes.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Please refer to fig. 1 to 7, which illustrate a schematic structural diagram of a deburring tool according to an exemplary embodiment of the present invention.

In the present invention, there is provided a deburring tool 100 including a tool bar 110, a pin 120, a blade 130, a spring plate 140, and a positioning pin 150.

As for the tool bar 110, as shown in fig. 2, one end of the tool bar 110 extends with a first connecting portion 111 and a second connecting portion 112; optionally, the utility model discloses in, the main part appearance with cutter arbor 110 exemplifies with the cylinder, the utility model discloses do not do the restriction to the concrete main part appearance of cutter arbor 110, wherein, the afterbody region of cutter arbor 110 is the thin cylinder main part that the radius is less for convenient fixed and centre gripping during the numerical control, and the remaining region of cutter arbor 110 is first connecting portion 111 and second connecting portion 112.

Further, a receiving groove 113 is formed between the first connecting portion 111 and the second connecting portion 112, and the pin 120 is received in the receiving groove 113.

As shown in fig. 1 and 3, one end of the pin 120 is riveted to the first connection portion 111, the other end of the pin 120 is riveted to the second connection portion 112, and the pin 120 is rotatable in a riveted state.

Further, as shown in fig. 3, the pin 120 is provided with an opening 121 at a side thereof for mounting the blade 130.

As for the blade 130, as shown in fig. 3 and 4, the blade 130 includes a connection ring 131 and a cutting portion 132 (in fig. 4, a left area of a dotted line a is the connection ring 131, and a right area of the dotted line a is the cutting portion 132), the blade 130 is sleeved on the side surface of the pin 120 through the connection ring 131, and the opening 121 is located in the connection ring 131 when the blade 130 is sleeved on the side surface of the pin 120.

It should be noted that since the pin 120 is rotatable in the riveted state, the blade 130 connected to the pin 120 is also rotatable when fitted in the deburring tool 100.

As for the spring plate 140, as shown in fig. 1, 2, 3 and 5, one end of the spring plate 140 is provided with a positioning hole 141, the side surface of the cutter bar 110 is provided with a positioning pin hole 114, the positioning pin hole 114 is aligned with the positioning hole 141, a positioning pin 150 passes through the positioning hole 141 and the positioning pin hole 114, one end of the spring plate 140 is fixed with the cutter bar 110 by the positioning pin 150, the other end of the spring plate 140 is embedded into the connecting ring 131 and is simultaneously embedded into the opening 121 of the pin 120, wherein the spring plate 140 is used for adjusting the cutting ability of the blade 130.

It should be noted that each component of the deburring tool 100 is a detachable component, for example, for the blade 130 with a large consumption degree, the blade 130 is only required to be detached and replaced with a new blade 130 after being dulled, and the numerical control device does not need to use a new deburring tool 100, thereby greatly reducing the production cost of consumers.

In one possible embodiment, the assembly process of the deburring tool 100 is explained: fixing the cutter bar 110; aligning the positioning hole 141 of the spring plate 140 with the positioning pin hole 114 on the cutter bar 110; then the positioning pin 150 is assembled to fix the spring plate 140 and the cutter bar 110; inserting the pin 120 into a riveting hole at the front end of the cutter bar 120, inserting half of the pin 120, sleeving the blade 130 on the position of the opening 121 of the pin 120, and continuously assembling the pin 120 into the cutter bar 110; the spring plate 140 is then inserted into the opening 121 of the pin 120 to complete the complete tool assembly.

Further, the utility model provides a deburring cutter 100 compares with the deburring cutter in the correlation technique.

As shown in fig. 6, which shows a schematic view of a deburring tool and a deburring process in the related art. The tool 600 is a tool with a larger caliber, the tool 610 is a tool with a smaller caliber, and the region 620 is a burr region. The caliber of the cutter 600 is large, burrs at the orifice of the area 620 can be removed at one time, but a circle of burrs inside the orifice of the area 620 cannot be removed, and the cutter 600 cannot extend into the orifice; the smaller diameter of tool 610 may extend into the interior of the orifice of region 620, but removing a ring of burrs inside the orifice of region 620 is time consuming and requires a higher specification on the numerical control machine tool by machine control to remove the burrs one ring around the orifice, and further, while tool 610 may extend into the interior of the orifice of region 620, it is not possible to remove the burrs inside region 620.

And the utility model discloses in, the burr removal tool 100 that provides not only can realize that the burr of the interior external surface in the drill way among the correlation technique is got rid of, can also realize getting rid of downthehole burr, and not high to the requirement of numerical control machine tool, realizability is better, and manufacturing cost is lower. As shown in fig. 7, a schematic diagram of the deburring tool 100 and the deburring process provided by the present invention is shown.

In process 1, the deburring tool 100 is rotated forward to prepare for entry into the aperture (clockwise as shown for the example of forward direction), and the burr of the forward aperture region 701 is removed clean.

In process 2, the deburring tool 100 enters the bore interior after completing the deburring of the forward bore region 701 in process 1, illustratively because the pin 120 is rotatable and thus also rotatable after the blade 130 has been subjected to the interaction forces of the bore surfaces, so that the maximum outer diameter of the deburring tool 100 becomes smaller and can naturally enter the bore interior.

In process 3, the deburring tool 100 is gradually moved out from the inside of the aperture to the reverse aperture region 702, and similar to process 1, the deburring tool 100 rotates and removes the burrs of the reverse aperture region 702 clean.

In process 4, the deburring tool 100 begins to return from the reverse orifice region 702 after completing the deburring work of the reverse orifice region 702. It should be noted that the timing of starting the return of the deburring tool 100 may be controlled manually or intelligently. For example, the operator controls the numerically controlled machine tool to control the activity of the deburring tool 100 according to the deburring effect, and for example, the technician presets a control mechanism for the operation time (for example, the operation time setting of each process according to the conditions of the diameter of the hole, the depth of the hole and the like) on the numerically controlled machine tool.

In process 5, the deburring tool 100 is completely withdrawn from the bore and the current operation is ended.

In summary, the utility model provides a deburring tool, each component of which can be detached and replaced for use, so that the service life of the whole tool is prolonged, and the production cost is reduced; for the main assembly blade, the connected pin can rotate and move when being subjected to external force, so that the deburring cutter can easily enter and exit the hole with smaller caliber; in addition, the deburring cutter can remove burrs in the positive and negative orifices through one-time operation, numerical control operation in the related technology is further simplified, and deburring operation efficiency and convenience are improved.

On the basis of fig. 1 to 7, please refer to fig. 8 to 14, which show schematic structural diagrams of a deburring tool according to another exemplary embodiment of the present invention, so as to further illustrate the structure of the deburring tool 100 in this embodiment.

As shown in fig. 8, optionally, the side of the cutting part 132 is provided with a forward cutting edge 133 and a reverse cutting edge 134, the forward cutting edge 133 is used for deburring of the forward orifice, and the reverse cutting edge 134 is used for deburring of the reverse orifice.

Returning to fig. 7, in process 1, the deburring tool 100 removes the burr of the forward orifice region 701 by the forward cutting edge 133; in process 3, the deburring tool 100 removes the burr of the reverse orifice region 702 by the reverse cutting edge 134.

In addition, in the present invention, the center line of the cutter bar 110 and the workpiece hole is the best cutting effect when they are aligned. Thus, as shown in fig. 9, in order to ensure that each cutting edge of the insert 130 is located on the center line b of the tool holder 110, since the insert 130 itself has a certain thickness, the thickness D1 of the first connecting portion 111 is required to be greater than the thickness D2 of the second connecting portion 112; further, when the insert 130 is sleeved on the side surface of the pin 120, the forward cutting edge 133 and the reverse cutting edge 134 are close to the first connecting portion 111, and the cutting edge plane S1 where the forward cutting edge 133 and the reverse cutting edge 134 are located coincides with the center line of the tool holder 110.

Alternatively, as shown in fig. 8, the cutting tip 135 of the cutting portion 132 is of a circular arc design. The arc surface of the cutting top 135 is the contact surface in the hole between the blade 130 and the workpiece hole, the unique arc design ensures that the blade 130 is smoothly contacted with the hole in the hole, the inner wall of the hole cannot be scratched by the inner surface of the hole, the burr removing requirement of a customer is met, and the hole quality is also ensured.

As shown in fig. 8, in the present invention, the forward cutting edge 133 is located on the rake surface S2, and the reverse cutting edge 134 is located on the flank surface S3 (the flank surface S3 is not shown in fig. 8 for reasons of obstruction). Note that the clearance angle of the rake face S2 and the flank face S3 is larger than the tangent angle of the orifice curve for the following reasons.

In the related art, the burr removing work of the inclined hole burrs and the cross hole burrs cannot be realized under the condition of one-time operation, but a plurality of deburring knives are needed to act simultaneously and turn over the workpiece in time, so that the mode consumes large labor force of workers and causes low production efficiency. Particularly, in the case of the circular-arc burr at the inner cross hole, the related art deburring blade cannot remove the burr even in one operation.

And the utility model discloses in, the deburring cutter 100 that provides can once through the hole, clear away positive and negative drill way burr and also can easily get rid of to inside cross hole burr, especially solves the cross hole burr that big aperture ratio is not less than 2, and among the correlation technique, the cross hole burr that big aperture ratio is not less than 2 has the crossing department curvature of hole too big and can't get rid of the problem of whole circle burr.

As shown in fig. 10, the workpiece 1001 to be deburred has a small aperture shown by D and a large aperture shown by 2D. In the operation process, the deburring cutter 100 rotates forwards to enter the hole, the deburring cutter 100 removes burrs of a forward hole opening and an internal cross hole through the cutting edge at one end during hole entering, and the deburring cutter 100 removes burrs of a reverse hole opening and the internal cross hole through the cutting edge at the other end during hole leaving.

Further, can get rid of totally in order to guarantee that big aperture diameter ratio is not less than 2 crossing hole burr, the utility model provides a big relief angle design is taken to burring cutter 100, as shown in fig. 10, and rake face S2 and clearance angle of flank face S3 are counted for 20 degrees, if the relief angle is too little, thereby can lead to the cutting edge can't bump the burr and can't carry out burr and get rid of work.

Fig. 11 (a) is a drawing of the intersection hole having a large aperture ratio of 2, and fig. 11 (b) shows angle data indicating the size of the angle formed by the burr and the insert 130 at positions 1, 2, 3, 4 and 5 during cutting. It can be seen that the relief angle of the blade 130 must be greater than the angle tangent to the orifice curve, only so that the blade 130 moves with its respective cutting edge cutting the workpiece. If the clearance angle of the blade 130 is smaller than the tangential angle of the orifice curve, the blade 130 is not the cutting edge but the flank surface of the blade 130 rubs against the workpiece at the cutting position, and thus the deburring effect cannot be achieved.

Optionally, as shown in fig. 12, the deburring tool 100 further includes a pressure adjusting screw 160, and the tool bar 110 is provided with a corresponding screw hole 161, wherein (a) and (b) of fig. 12 are perspective views of the internal structure of the deburring tool 100 at different angles, and (c) of fig. 12 is a non-perspective assembly view. The pressure adjusting screw 160 is installed in the screw hole 161 and generates pressure on the spring plate 140, and the spring plate 140 under the pressure generates elastic acting force on the blade 130, wherein the screwing degree of the pressure adjusting screw 160 is in positive correlation with the elastic acting force.

Optionally, the operator can tighten or loosen the pressure adjusting screw 160 according to the size of the burr or the requirement for the size of the chamfer.

In one possible embodiment, the assembly process of the deburring tool 100 can be further explained as follows: fixing the cutter bar 110; aligning the positioning hole 141 of the spring plate 140 with the positioning pin hole 114 on the cutter bar 110; then the positioning pin 150 is assembled to fix the spring plate 140 and the cutter bar 110; inserting the pin 120 into a riveting hole at the front end of the cutter bar 120, inserting half of the pin 120, sleeving the blade 130 on the position of the opening 121 of the pin 120, and continuously assembling the pin 120 into the cutter bar 110; then, the spring plate 140 is inserted into the opening 121 of the pin 120, finally, the pressure adjusting screw 160 is placed into the screw hole 161, and the pressure adjusting screw 160 is tightened to press the spring plate 140, thereby completing the assembly of the whole cutter.

In the present invention, the spring plate 140 includes a front portion and a rear portion, the thickness of the front portion being smaller than the thickness of the rear portion; further, the front end portion is inserted into the connection ring 131 of the blade 130 and inserted into the opening 121 of the pin 120. The thickness of the front end is smaller, so that the front end of the spring plate 140 is thinner, and the deformation degree is larger when the spring plate is stressed, thereby facilitating the blade 130 to swing within a certain angle range. In one example, as shown in fig. 13, the blade 130 has a swing range of 90 degrees.

Further, as shown in fig. 14, the first connection portion 111 is provided with a first opening 115, and the second connection portion 112 is provided with a second opening 116; further, one end of the pin 120 is riveted with the first opening 115, the other end of the pin 120 is riveted with the second opening 116, and the pin 120 is rotatable in the riveted state.

The utility model discloses in, the cutting portion of blade is provided with different cutting edges to the getting rid of forward drill way burr and reverse drill way burr when realizing disposable operation, improved the operating efficiency.

The utility model discloses in, the cutting edge plane at forward cutting edge and reverse cutting edge place coincides with the central line of cutter arbor to guarantee best cutting effect.

The utility model discloses in, the cutting top of cutting portion is the design of circular arc formula, has guaranteed that the blade is level and smooth going on when the hole inside rather than contacting, does not hinder and the inner wall in hole inner surface can not scratch hole yet, has not only satisfied the requirement of customer deburring and has also guaranteed the quality in hole.

The utility model discloses in, the relief angle of rake face and back knife face is greater than the curvilinear tangent line angle in drill way, can once the via hole, clear away positive and negative drill way burr and also can easily get rid of to the cross hole burr that big or small aperture diameter ratio is not less than 2 has the crossing problem that the department of curvature is too big and can't get rid of whole circle burr in the hole in solving the correlation technique.

The utility model discloses in, the burring cutter still includes the pressure regulating screw, and operating personnel can be according to the burr size or to the demand of chamfer size tighten up or transfer the pine pressure regulating screw, makes things convenient for the nimble implementation of burring operation.

The utility model discloses in, the thickness of the front end portion of spring leaf is less than the thickness of rear end portion for the front end of spring leaf is thinner, and then degree of deformation is great during the atress, and then makes things convenient for the blade to swing at certain angle within range, improves the flexibility of burring cutter when the operation.

The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A deburring tool, comprising: the cutter comprises a cutter bar, a blade, a spring piece, a pin and a positioning pin;

a first connecting part and a second connecting part extend from one end of the cutter bar, a containing groove is formed between the first connecting part and the second connecting part, and the pin is contained in the containing groove;

the side surface of the pin is provided with an opening, the blade comprises a connecting ring and a cutting part, the blade is sleeved on the side surface of the pin through the connecting ring, and the opening is positioned in the connecting ring when the blade is sleeved on the side surface of the pin;

one end of the spring piece is provided with a positioning hole, the side surface of the cutter bar is provided with a positioning pin hole, the positioning pin hole is aligned with the positioning hole, the positioning pin penetrates through the positioning hole and the positioning pin hole, one end of the spring piece is fixed with the cutter bar through the positioning pin, the other end of the spring piece is embedded into the connecting ring and is simultaneously embedded into the opening of the pin, and the spring piece is used for adjusting the cutting capacity of the blade.

2. A deburring tool as claimed in claim 1 wherein the side of said cutting portion is provided with a forward cutting edge for deburring of a forward orifice and a reverse cutting edge for deburring of a reverse orifice;

the thickness of first connecting portion is greater than the thickness of second connecting portion, the blade cover is located during the side of pin, the forward cutting edge with reverse cutting edge is close to in first connecting portion, just the forward cutting edge with the cutting edge plane at reverse cutting edge place with the coincidence of the central line of cutter arbor.

3. A deburring tool as claimed in claim 1 wherein the cutting tip of said cutting portion is of circular arc design.

4. A deburring tool as claimed in claim 2 wherein said forward cutting edge is on the rake face and said reverse cutting edge is on the relief face;

the clearance angle of the front cutter face and the clearance angle of the rear cutter face are larger than the tangent angle of the orifice curve.

5. The deburring tool of any one of claims 1 to 4, further comprising a pressure adjusting screw, wherein the tool holder is provided with a corresponding screw hole;

the pressure regulating screw is installed in the screw hole, and is right the spring leaf produces pressure, and the spring leaf under the pressure effect is right the blade produces elastic force, wherein, the degree of screwing of pressure regulating screw with elastic force is positive correlation.

6. The deburring tool of claim 5, wherein the spring plate includes a front end portion and a rear end portion, the front end portion having a thickness less than a thickness of the rear end portion;

the front end portion is embedded in the connecting ring of the blade and in the opening of the pin.

7. A deburring tool as claimed in any one of claims 1 to 4 wherein said first connecting portion is provided with a first aperture and said second connecting portion is provided with a second aperture;

one end of the pin is riveted with the first opening, and the other end of the pin is riveted with the second opening.

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