CN103447624B - An adjustable internal and external chamfering knife - Google Patents

Abstract

The present invention relates to a kind of machining equipment, especially relate to a kind of adjustable inside and outside rose reamer.A kind of adjustable inside and outside rose reamer, comprise the knife bar be connected with the driving shaft of milling machine, knife bar is provided with two fixing lug boss along the radial direction of knife bar, moveable interior dise knife and cylindrical cutter is provided with between two fixing lug boss, the blade of interior dise knife and cylindrical cutter is positioned at the same side, interior dise knife and one of them fixing lug boss is removable is connected, cylindrical cutter and another fixing lug boss is removable is connected, interior dise knife is connected by alignment pin with cylindrical cutter.The invention has the beneficial effects as follows: 1), on same cutter be provided with interior dise knife and cylindrical cutter, chamfer machining can be carried out to fillet inside and outside parts end face simultaneously, decrease manufacturing procedure, improve working (machining) efficiency; 2), for fillet inside and outside different size part, the distance between the blade of adjustable interior dise knife and the blade of cylindrical cutter, adaptability is good, does not need often to change cutter, convenient and reliable.

Description

An adjustable internal and external chamfering knife

technical field

The invention relates to a mechanical processing device, in particular to an adjustable inner and outer chamfering cutter capable of chamfering the inner and outer circles of the end face of a cylinder at the same time.

Background technique

With the development of society and the improvement of the quality of life, people put forward higher quality requirements for the processing industry. With the increase in demand, the processing industry often needs to purchase raw materials in large quantities, and then process them gradually in an assembly line. This processing method can reduce the replacement time of machinery and equipment and fixtures, and it is easy to improve the labor proficiency of operators and improve labor efficiency. productivity and bring better economic benefits.

On machine tools such as milling machines, drilling machines, planers, and chamfering machines, chamfering cutters are often used for batch chamfering processing. The chamfering cutter is a professional chamfering tool designed for batch processing environments. It has a unique integrated design. It makes it possible to drop the debris generated during the chamfering process more conveniently, without causing delays in work efficiency due to tool blockage; the blade can be ground, and the more convenient maintenance method allows the blade to be removed without unloading Grinding; good processing adaptability, can process all kinds of soft or ferrous metals, and the improved knife edge doubles the service life of the tool. More specifically, a chamfering cutter is a tool used to process 60-degree or 90-degree chamfering and tapered holes of a workpiece, and it belongs to an end mill. The chamfering knife has a wide range of applications, not only suitable for chamfering of ordinary machined parts, but also suitable for chamfering and deburring of precision difficult-to-chamfer parts, such as: aviation, military industry, automotive industry processing fields, engine cylinders, cylinders , sphere through hole, inner wall hole and other parts processing.

When chamfering the end face of a cylindrical part, the existing chamfering cutter can only be used for inner fillet or outer fillet. When both inner and outer fillets need chamfering, the current milling machine is used to process the end face of a cylindrical part. The main method is to chamfer the inner fillet with a chamfering cutter first, and then use a milling cutter or a boring tool to perform chamfering of the outer fillet in a separate process. A chamfering knife is now provided, such as a chamfering knife provided by the Chinese utility model patent CN 202317282U. An outer hexagon, a positioning circle and a chamfering edge are respectively arranged from top to bottom, and the chamfering edge is at an angle of 45 degrees to the vertical direction. The chamfering knife cannot be used for the processing of the inner and outer rounded corners at the same time, and its function is relatively single. Different tools need to be used for chamfering different rounded corners, and the installation and replacement are cumbersome. In addition, there are many processing procedures, which reduces the production efficiency.

Contents of the invention

The present invention mainly aims at the problems of single function, cumbersome installation and replacement, and low production efficiency existing in the existing chamfering knife, and provides a kind of chamfering process for inner and outer fillets at the same time, and can process inner and outer fillets of different sizes. , Adjustable internal and external chamfering knives with high production efficiency.

The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions: an adjustable internal and external chamfering cutter, including a cutter bar connected with the drive shaft of the milling machine, on the cutter bar there is a Two fixed bosses, there are movable inner and outer round knives between the two fixed bosses, the blades of the inner and outer round knives are on the same side, and the inner round knife and one of the fixed bosses are detachable Fixed connection, the outer circle knife is detachably connected with another fixed boss, and the inner circle knife and the outer circle knife are connected by positioning pins. The chamfering cutter has an inner circular cutter for chamfering the inner fillet of the part, and an outer circular cutter for processing the outer fillet chamfering of the part. The inner and outer circular knives are connected to two fixed bosses respectively. When the tool bar rotates, the fixed boss rotates around the axis of the output shaft, and drives the inner and outer circular knives to rotate together. The blades of the inner and outer circular knives rotate at the same time, and then chamfers the inner and outer corners of the parts. Compared with the traditional single chamfering process, the processing steps are reduced and the processing efficiency is improved. Moreover, the inner and outer round knives can move relative to each other. For the inner and outer fillets of parts of different sizes, the distance between the blades of the inner and outer round knives can be adjusted, so that different sizes of inner and outer fillets can be processed. Good performance, no need to change the tool frequently, convenient and reliable.

As a preference, the inner circular knife is provided with a first adjustment hole, and the outer circular knife is provided with a second adjustment hole communicated with the first adjustment hole, the first adjustment hole and the second adjustment hole are waist round holes, The positioning pin is a fixing bolt, and the positioning pin is installed in the first adjusting hole and the second adjusting hole. The first adjustment hole on the inner circle knife is aligned with the second adjustment hole on the outer circle knife, and is fixed with a positioning pin. When it is necessary to adjust the distance between the blades of the inner and outer circle knife, loosen the positioning pin to adjust, which is convenient Reliable and low cost.

As a preference, the outer surface of the inner circular knife is recessed inwardly to form a first card slot capable of accommodating the nut of the positioning pin. The first adjustment hole is a round hole and is consistent with the length direction of the first card slot. The first adjustment hole Set at the bottom of the first slot, the outer surface of the outer circular knife is recessed inward to form a second slot that can accommodate the bolt head of the positioning pin. The second adjustment hole is a waist hole and is consistent with the length direction of the second slot , the second adjustment hole is arranged at the bottom of the second card slot. The first adjustment hole, the second adjustment hole, the first card slot and the second card slot are all round and in the same direction. When the position of the positioning pin is adjusted, the bolt head will always be in the second card slot, and the nut will always be in the first card slot. As a result, the outer surfaces of the inner circular knife and the outer circular knife are flat and will not cause interference during rotation.

Preferably, the length of the first adjustment hole is 0.4 to 0.7 times the length of the inner circular knife, and the length of the first adjustment hole is the same as that of the second adjustment hole. In order to ensure the adjustable range between the inner circle knife and the outer circle knife, the first adjustment hole and the second adjustment hole should be set longer, and the length of the first adjustment hole is 0.4 to 0.7 times the length of the inner circle knife, which meets the requirements Require.

Preferably, the positioning pin has an outer hexagon bolt head and an outer hexagon nut, the distance between the parallel end surfaces on the bolt head is the same as the groove width of the second slot, and the distance between the parallel end surfaces on the nut is the same as the first slot width. The groove width is the same. When the inner circle knife and the outer circle knife are rotated, the positioning pin, that is, the fixing bolt, is easy to loosen, so the positioning pin is set with an outer hexagon bolt head and an outer hexagon nut, so that the distance between the bolt head and the parallel end surface of the nut is the same as the groove width of the card slot. When the inner circular cutter and the outer circular cutter rotate like this, the positioning pin will not rotate, ensuring stability.

As a preference, the fixed boss is provided with a positioning groove capable of accommodating an inner circular knife or an outer circular knife, wherein the positioning groove on one fixed boss is connected with the inner circular knife, and the positioning groove on the opposite fixed boss The groove is connected with the outer circular cutter, and each fixed boss is provided with a locking bolt, and the fixed boss is fixed with the inner circular cutter or the outer circular cutter through the locking bolts. A positioning groove is provided on the fixed boss, and the outer end of the inner circular knife or the outer circular knife can be engaged and connected in the positioning groove. The fixed position of the inner circular knife and the outer circular knife is stable, and the chamfering precision is high.

As a preference, the inner circle knife and the outer circle knife are fixed with a positioning shaft capable of being accommodated in the positioning groove, the inner circle knife and the outer circle knife are located between the two positioning shafts, the locking bolt and the positioning The shaft is fixed. When it is necessary to chamfer parts with small inner and outer fillets, it is necessary to adjust the distance between the blades of the inner circle knife and the outer circle knife to be small, and at this time the inner circle knife and the outer circle knife may be separated Due to the restraint of the positioning pin, positioning shafts can be set on the inner circular knife and the outer circular knife, and the positions of the inner circular knife and the outer circular knife can be limited by the positioning shaft.

Preferably, the shaft diameter of the positioning shaft is the same as the width of the positioning groove. The axle diameter of locating shaft is identical with the groove width of locating groove, and then locating shaft and locating pin are connected for clamping fit, and inner circular cutter and outer circular cutter can not shake on the axial diameter direction of locating axle.

As a preference, the cutter rod includes a tapered rod and a turntable connected with the tapered rod, the tapered rod is provided with a threaded core hole, the tapered rod is screwed with the drive shaft of the milling machine through the threaded core hole, and the rotary table is symmetrically provided with two In the groove where the claw hand of the milling machine is fixedly connected, two fixed bosses are arranged on the turntable away from the end of the tapered rod, and the two fixed bosses are symmetrical to the center point of the turntable. The drive shaft of the milling machine is screwed to the taper rod, and is fixed with the groove on the turntable through the gripper. When the taper rod rotates, the turntable will rotate with it, with the same angular speed and stable rotation.

Preferably, the distance between the two fixed bosses is not less than half of the sum of the lengths of the inner circular knife and the outer circular knife. The inner circle knife and the outer circle knife are placed between two fixed bosses, and the distance between the two fixed bosses should be ensured to be relatively large. The distance between the inner circle knife and the outer circle knife needs to be adjusted.

Therefore, the beneficial effects of the present invention are as follows: 1), the inner circular cutter and the outer circular cutter are set on the same tool, which can simultaneously chamfer the inner and outer rounded corners of the end faces of parts, reduce the processing steps and improve the processing efficiency ; 2) For the inner and outer fillets of parts of different sizes, the distance between the blades of the inner circular knife and the outer circular knife can be adjusted, which has good adaptability and does not need to be replaced frequently, which is convenient and reliable.

Description of drawings

Accompanying drawing 1 is a kind of three-dimensional structure schematic diagram of the present invention;

Accompanying drawing 2 is a kind of structural representation of cutter bar among the present invention;

Accompanying drawing 3 is a kind of structural representation of chamfering tool among the present invention;

Accompanying drawing 4 is a kind of structural representation of inner circle cutter among the present invention.

As shown in the figure: 1-Fixed boss, 2-Cutter bar, 21-Taper rod, 22-Turntable, 23-Threaded core hole, 24-Groove, 3-Inner circular knife, 4-Outer circular knife, 5- Positioning pin, 6-first adjustment hole, 7-second adjustment hole, 8-first card slot, 9-second card slot, 10-positioning slot, 11-locking bolt, 12-positioning shaft, a-zero part.

Detailed ways

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Example:

As shown in accompanying drawings 1 and 3 of the description, an adjustable inner and outer chamfering cutter includes a cutter bar 2 connected to the drive shaft of a milling machine. 21 is connected to the turntable 22, and the taper rod 21 is provided with a threaded core hole 23, and the taper rod 21 is screwed with the drive shaft of the milling machine through the threaded core hole 23, and the turntable 22 is symmetrically provided with two recesses fixedly connected with the claw hand of the milling machine. Groove 24, two fixed bosses 1 are provided on the knife bar 2 along the radial direction of the knife bar 2, and the two fixed bosses 1 are arranged on the rotating disk 22 away from the end of the tapered rod 21, and the two fixed bosses 1 are The center point of the turntable 22 is symmetrical, and a movable inner circle knife 3 and an outer circle knife 4 are arranged between the two fixed bosses 1. The blades of the inner circle knife 3 and the outer circle knife 4 are located on the same side, and the inner circle knife 3 and the One of the fixed bosses 1 is detachably connected, the outer circular knife 4 is detachably connected with the other fixed boss 1, the inner circular knife 3 and the outer circular knife 4 are connected by a positioning pin 5, and the inner circular knife 3 is provided with a second An adjustment hole 6, the outer circular knife 4 is provided with a second adjustment hole 7 communicating with the first adjustment hole 6, the first adjustment hole 6 and the second adjustment hole 7 are round holes, and the positioning pin 5 is a fixing bolt, The positioning pin 5 is installed in the first adjustment hole 6 and the second adjustment hole 7, as shown in Figure 4 of the specification, the outer surface of the inner circle knife 3 is recessed inwardly to form a first slot 8 that can accommodate the nut of the positioning pin 5, The first adjustment hole 6 is a waist hole and is consistent with the length direction of the first card slot 8. The first adjustment hole 6 is arranged at the bottom of the first card slot 8, and the outer surface of the outer circular knife 4 is inwardly recessed to accommodate positioning. The second card slot 9 of the bolt head of the pin 5, the second adjustment hole 7 is a round hole and is consistent with the length direction of the second card slot 9, the second adjustment hole 7 is arranged at the bottom of the second card slot 9, the second adjustment hole 7 The length of an adjustment hole 6 is 0.5 times of the length of the inner circular knife 3, the length of the first adjustment hole 6 is consistent with the length of the second adjustment hole 7, and the positioning pin 5 has an outer hexagonal bolt head and an outer hexagonal nut. The distance between them is the same as the groove width of the second draw-in groove 9, the distance between the parallel end surfaces on the nut is the same as the groove width of the first draw-in groove 8, and the fixed boss 1 is provided with a 4, the positioning groove 10 on one of the fixed bosses 1 is connected to the inner circular knife 3, and the positioning groove 10 on the opposite fixed boss 1 is connected to the outer circular knife 4, and each fixed boss 1 Both are provided with locking bolts 11, and the fixed boss 1 is fixed with the inner circular knife 3 or the outer circular knife 4 through the locking bolts 11. In the positioning shaft 12, the shaft diameter of the positioning shaft 12 is the same as the slot width of the positioning groove 10, the inner circle knife 3 and the outer circle knife 4 are located between the two positioning shafts 12, the locking bolt 11 is fixed with the positioning shaft 12, and the two The distance between each fixed boss 1 is not less than half of the length sum of the inner circle knife 3 and the outer circle knife 4.

As shown in Figure 1 of the manual, the round pipe a in the figure is a processing part, and the inner and outer round corners of a need to be chamfered. The processing process of using this chamfering knife is: measure the wall thickness of the round pipe a, adjust the inner and outer round knives Make the distance between the blades consistent with the wall thickness of the round pipe, then fix the inner and outer round knives through positioning pins, and then install them on the cutter bar as a whole, and use locking bolts to fix the inner and outer rounded corners of the round pipe a Align with the blades of the inner and outer round knives, start the milling machine, the cutter bar will rotate accordingly, and the inner and outer round knives will perform circular motions accordingly, and chamfer the inner and outer fillets of the round pipe a, with high machining accuracy. When chamfering other parts, measure the size of the part to be chamfered, adjust the inner and outer circular knives accordingly, and repeat the above process, which is simple, convenient and quick.

The chamfering knife can chamfer the inner and outer circles of cylindrical parts at the same time, and can adjust the processing range according to workpieces of different sizes, which improves the use range of the chamfering knife. It can be realized on a milling machine with one tool. Reduce manufacturing costs while improving processing efficiency. It has the following advantages:

1) It can chamfer the inner and outer circles of cylindrical parts at the same time;

2), reducing the number of tools used and the amount of movement of the equipment;

3) Improve the working efficiency of machining;

4) Save the cost of purchasing various types of knives and tool holders;

5) The processing range can be adjusted according to the size of different workpieces, which improves the use range of the chamfering knife;

6) Reduce the manufacturing cost of the machine.

It should be understood that this embodiment is only used to illustrate the present invention and is not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (9)

1. An adjustable internal and external chamfering cutter, including a cutter bar (2) connected to the drive shaft of a milling machine, characterized in that, the cutter bar (2) is provided with two The fixed boss (1), the movable inner circle knife (3) and the outer circle knife (4) are arranged between the two fixed bosses (1), the inner circle knife (3) and the outer circle knife (4) The blades are on the same side, the inner round knife (3) is detachably connected to one of the fixed bosses (1), the outer round knife (4) is detachably connected to the other fixed boss (1), and the inner round knife (3) ) is connected with the outer circle knife (4) through the positioning pin (5); the inner circle knife (3) is provided with the first adjustment hole (6), and the outer circle knife (4) is provided with the first adjustment hole (6) The connected second adjustment hole (7), the first adjustment hole (6) and the second adjustment hole (7) are round holes, the positioning pin (5) is a fixing bolt, and the positioning pin (5) Installed in the first adjustment hole (6) and the second adjustment hole (7). 2. An adjustable internal and external chamfering knife according to claim 1, characterized in that, the outer surface of the inner circular knife (3) is recessed inwardly to form a first clip capable of accommodating the nut of the positioning pin (5) Slot (8), the first adjustment hole (6) is a waist hole and is consistent with the length direction of the first card slot (8), the first adjustment hole (6) is set at the bottom of the first card slot (8), The outer surface of the outer circular knife (4) is recessed inwardly to form a second slot (9) capable of accommodating the bolt head of the positioning pin (5). ) in the same length direction, and the second adjustment hole (7) is set at the bottom of the second card slot (9). 3. An adjustable internal and external chamfering knife according to claim 1, characterized in that the length of the first adjustment hole (6) is 0.4 to 0.7 times the length of the inner circular knife (3), and the first The adjustment hole (6) has the same length as the second adjustment hole (7). 4. An adjustable inner and outer chamfering knife according to claim 2, characterized in that the positioning pin (5) has an outer hexagonal bolt head and an outer hexagonal nut, and the distance between the parallel end surfaces on the bolt head is equal to The second slot (9) has the same slot width, and the distance between the parallel end surfaces on the nut is the same as the slot width of the first slot (8). 5. An adjustable internal and external chamfering knife according to claim 1 or 2 or 3 or 4, characterized in that, the fixed boss (1) is provided with a The positioning groove (10) of the circular knife (4), one of the positioning grooves (10) on the fixed boss (1) is connected with the inner circular knife (3), and the opposite positioning groove on the other fixed boss (1) (10) is connected with the outer circular cutter (4), each fixed boss (1) is provided with a locking bolt (11), and the fixed boss (1) is connected with the inner circular cutter (3) through the locking bolt (11) ) or outer circular knife (4) fixed. 6. An adjustable inner and outer chamfering knife according to claim 5, characterized in that, both the inner circle knife (3) and the outer circle knife (4) are fixed with positioning grooves (10 ), the inner circle knife (3) and the outer circle knife (4) are located between the two positioning axes (12), and the locking bolt (11) is fixed with the positioning axle (12). 7. The adjustable internal and external chamfering knife according to claim 6, characterized in that the shaft diameter of the positioning shaft (12) is the same as the groove width of the positioning groove (10). 8. An adjustable internal and external chamfering knife according to claim 1, characterized in that, the said knife rod (2) comprises a tapered rod (21) and a turntable (22) connected with the tapered rod (21), The tapered rod (21) is provided with a threaded core hole (23), and the tapered rod (21) is screwed to the drive shaft of the milling machine through the threaded core hole (23). The fixed groove (24), two fixed bosses (1) are set on the end of the turntable (22) away from the tapered rod (21), and the two fixed bosses (1) are symmetrical to the center point of the turntable (22) . 9. An adjustable internal and external chamfering knife according to claim 1 or 2 or 3 or 4 or 8, characterized in that the distance between two fixed bosses (1) is not less than the inner circular knife (3) half of the sum of the length of the outer circle knife (4).