JP2011083886A - Cutter grinder working while mounted to machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein, when a product is generally machined, an accurate hexahedron is firstly formed by a face milling tool irrespective of its size and the frequently-used face milling tool has three to ten tip blades on an outer circumference of the tool to improve machining efficiency, but their blade edges are varied due to a machine, the tool, the tip blades or the like even when a new tool is used, so that grinding efficiency is remarkably impaired. <P>SOLUTION: While blades are mounted to the machine without being removed from the machine, a grinder is fixed by a vise on a bed of the machine. The blades are ground at the same position while the machine (tool) is manually rotated, so that difference between each blade or variations of the blades are prevented. Thus, the machining efficiency is considerably enhanced (at the moment, a grinder for grinding blades while a tool is mounted to a machine tool does not exist). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is an apparatus capable of polishing and continuing machining immediately without removing the tool from the machine for blunting of the blade, which always occurs when cutting metal with a machine tool.

  Currently, all blades used in machine tools are polished by removing the blade or tool from the machine and polishing with a dedicated blade polishing machine. Because it is expensive, it is limited to companies with a certain scale or more, and many companies are currently entrusting them to specialist blade specialists, but the content of polishing is internal or external. The following problems are involved in removing all blades or tools from the machine.

The problems are as follows: (1) It is expensive for either the blade sharpening equipment or the blade sharpening unit price. (2) In the case of outsourcing, the time loss for moving the blade is large.
(3) There is a position of the other party, and it can not be said that it is always desired to be fast, and for efficient machining, depending on the frequency of use of the blade, multiple spare blades are required (tip blades used with face mill tools are New blades are often replaced).

However, the face mill tool has a big problem that cannot be dealt with more than the above mentioned. It is caused by machine runout, distortion due to tool impact, tool manufacturing failure, chip blade irregularities, etc. With high and low roses.
For accurate hexahedron machining that is first performed in parts machining, a face mill tool with a large number of blades in one holder is generally used for efficiency, but numerically in order to fully demonstrate its capabilities, Since the height error of each cutting edge is required to be an error of one-hundredth or less, it is almost impossible to include new tools, and the current situation is that some degree of inefficiency is abandoned.

  To correct the error between the blades, the shape of the holder is circular and complicated, and the hardness is quenched. At present, correction processing cannot be performed because the error range is too strict.

  In general, end mills, metal saws, and side cutters occupy blade cutters, and many of the face mill tool blades that are frequently used are disposable. The current situation is that there are few merits after creating special jigs. Even after polishing, after mounting the blades, the error between the blades is not less than one-hundredth. However, there is no polishing machine removed, such as the face mill body, the solution at the present time Is almost impossible.

  The face mill tools mentioned above are very frequently used, so they are generally interested in machining operations. However, as mentioned above, it is difficult to create, modify, and modify tools, and the height of the cutting edge is important. In the current situation, there is no means to solve the problem other than rotational polishing with a face mill tool mounted on the machine, in view of the fact that chip dispersion and the purchase of new products cannot be resolved.

  In the present invention, a main body with a grinding wheel attached to the tip of a circular high-speed motor is fixed to a rectangular auxiliary plate with a band and integrated, and a through hole provided in the center of the auxiliary plate in advance and the main body After aligning the large angle used to support and the hole explained in the upper part of the upward surface of the angle, the bolts connecting them were passed through and tightened with nuts to integrate them with the main body. In addition, an angled scale plate is provided at the joint between the angle and the nut, so that the motor body (grinding stone) can hold and fix an arbitrary vertical angle around the bolt that penetrates due to the tightening strength of the nut. .

  The movement of the motor body to the left and right is sandwiched between two slide shafts (18) with both sides of the angle (6) located on the bottom side processed into a cono shape, and the up and down play is tightened with adjustment bolts and lubrication from above A smooth movement was established by installing holes, and the driving force was determined by the rotation of the screw shaft (16) provided at the center of the slide shaft.

  The blade polishing that requires an angle is handled by the rotation of the main shaft (11) disposed under the two cono-shaped slide shafts described in the previous section. Both shafts are firmly fixed, and the main shaft that has received all of the polishing body by integrating them has (10) a flange with an angle scale (left in the figure), and one has a mechanism for fine movement of the main shaft. Inserted and joined to the flanges (10 and 19 on the right in the figure), and in the case of oblique polishing, an arbitrary angle can be set by inserting and rotating an appropriate shaft into the rotation angle setting hole located at the left of the main shaft main body (20). can get. A nut device provided on the opposite side to move the main shaft minutely in order to determine the contact position of the polishing blade and the grindstone and the polishing amount.

  The screw part necessary for smoothly moving the polishing body via the slide shaft is a long nut provided at the lower center of the angle base (17), and is a male screw through the screw reference hole, raised from the center end of the base By inserting and rotating (16), the polishing body makes a smooth movement required for polishing with the reference hole as a base point.

  In addition, the entire polishing machine is fixed by using a vise mounted on the machine tool to fix the base part (1) located at the lower part of the polishing machine. Since there is a possibility of contact with the upper surface of the vice, an application such as using the vice central space with two vices is necessary.

In the tool polishing of a tool having a plurality of blades, an accurate position of each blade is required, and as a measure for this, a strong and fixed upward shaft provided at a corner of the base is used.
First, a special flange is provided on the upper part of the shaft to insert the blade positioning shaft. The positioning shaft passes through the flange, and the tip is in the direction facing the rotation to be cut, and is the most convenient and reliable position for polishing each blade. Contact with, and fix with flange.

The present invention provides a polishing machine that polishes a blade while attaching various blades to the machine tool.
Up to now, fine fluctuations of machines, tools, insert blades, blade holders, etc., overlap of subtle causes of dimensional differences, distortions, etc., have caused cutting edge height discrepancies and problems, resulting in significantly reduced cutting efficiency. However, by rotating and polishing at a fixed position while the tool is mounted on the machine, the phenomenon that appears due to the various causes described above is absorbed by the amount of blade polishing of each blade. The original cutting ability can be demonstrated.
Especially when it comes to face mill tools, the effect is great. For example, because the tool was distorted due to an impact due to a mistake in the past, it was newly purchased with knowledge of the cost, but it was not thrown away and stored, etc. However, if there is some distortion due to external deformation, there is a great possibility that it can be recovered by mounting it on a machine and polishing it.

  It can also be used to grind chamfering blades and drills that require an arbitrary angle, and has a wide range of uses (drills need to be held near the grindstone, end mills only on the bottom). In addition, tool holders that occupy a large weight in general tool polishers, and heavy platform structures that also prevent vibration during polishing, are replaced by machine tools, making the polisher lightweight, compact, and excellent in storage. Although it was equipped with elements that can correct the run-out caused by tools and machines, which is a feature that cannot be achieved with a general blade grinder, it has achieved low cost.

  The top view which shows the polisher of this invention   Plan view below the motor of the polishing machine   Side view from side A of the polishing machine   Enlarged side view of the grinding machine from side B   Schematic diagram of inclined polishing with vise fixing of the polishing machine   Schematic diagram of blade grinding with machine tool installed

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  On the drawing, (1) the base that supports the polishing machine, (2) the motor, (3) the grindstone, (4) the band that fixes the motor and the auxiliary plate, (5) the auxiliary plate, (6) all the drive of the main body (7) Nut that combines the angle of the motor and fixing to the angle and tightening of the angle entry flange, (8) The shaft connecting the motor and the angle, (9) Cooling air effect of the motor, ( 10) Main shaft fixing flange (1 each for left and right), (11) Main shaft for supporting the main body and changing the angle, (12) Main shaft angle reading collar, (13, 14) Polishing blade positioning pole and shaft, 16) Screw shaft and handle for sliding the main body, (17) Long nut provided at the bottom of the bottom of the angle to receive the screw shaft, (18) Angle book (19) Bolts provided for the purpose of slightly moving the main shaft to determine the amount of polishing of the blade with a grindstone, (20) Inclination of the main body Sometimes, handle insertion hole to be used, (21) Possible machine tool (schematic), (22) Polishing machine fixing vise (reference diagram), (23) Polishing machine moving direction arrow

The operation of the above configuration will be described below. After fixing the invented polishing machine with the vise on the machine tool bed, loosen the 7 nuts fixing the 2 motors and 6 angles, and put the hand on the left rear part of the motor and lower it, Bring it to the rear of the polishing blade while increasing the angle, and tighten and tighten the nut while maintaining a slight gap with the blade while adjusting to the clearance angle of the blade.
Next, after fixing the shaft with an obtuse tip on the flange provided at the top of the pole at the corner corners of the bases 13, 14, select and fix an arbitrary position in the direction of the blade tip, The bolt provided for the movement is turned and the grindstone is polished close to the cutting edge, but the amount is as small as possible, but it is determined based on the fact that the entire blade can be polished.
Next, in order to give strength to the blade and to speed up the cutting feed, the bottom of the blade was slightly flattened, so the grindstone moved laterally while polishing by turning the 16 screw shaft. .

  For the second and subsequent polishing, after moving the grindstone to a position where there is no problem even if the tool reverses, manually rotate the tool a little in the reverse direction and allow the blade stopper to have a clearance. Lower the blade or move it sideways to allow the blade to rotate freely, then rotate the tool roughly to the extent necessary for the next polishing, and then return the bed, position of the stopper, etc. The main purpose of face mill blade polishing is to eliminate as much as possible the difference in edge height of each blade rather than sharpening. For bet movement, it is safe to use a parallel movement strategy from top to bottom.

  Regarding polishing, the amount of polishing is usually very small, and the grindstone applies polishing pressure from the back of the blade to the front of the blade, but the stopper is fixed facing the blade, so the movement of the tool rotates during polishing. Not included. Then, polishing is repeated for the number of blades to finish.

  For inclined polishing, first, 20 arbitrary rods are put on the 11 main shaft, the main body is inclined and fixed while looking at the numerical value of the flange with 10 angles, and then the above operation is performed.

Claims (2)

  Without removing the metal cutting tool (drill, end mill, especially face mill) tool attached to the machine tool from the machine, attach the motor and the entire grindstone attached to the tip of the tool to the upper surface with an angle-shaped skeleton. A device that grinds while allowing the left and right movements of the grindstone by setting the angle to the slide shaft while keeping the angle base in close contact with the slide shaft.   As a measure to incline the main body of the polishing machine at an arbitrary angle, a circular main shaft mechanism that is fixedly connected to the lower part of the bottom of the angle, which is a skeleton, via two slide shafts, and both sides are inserted and connected to a flange. An apparatus capable of polishing at an inclination angle because the entire polishing machine is inclined by the rotation of the main shaft.

Images