KR20190035075A - A finished test piece for the 5-axis machine tool - Google Patents

Abstract

The present invention relate s to a standard specimen for a five-axis machining tool. The purpose of the present invention is to provide a standard specimen for a five-axis machining tool, capable of defining standard evaluated as processing accuracy of a five-axis machining tool is easily inspected. According to an embodiment of the present invention, the standard specimen for a five-axis machining tool has a flat bottom surface and is formed as a polyhedron having the upper surface formed to be parallel with the bottom surface and first, second, third, and fourth sides crossing the upper surface. A first Z-axis hole is formed by being penetrated at the center of the upper surface, and a first protrusion disk, a round groove, and a second protrusion disk are formed in order in a concentric circle to the first Z-axis hole. A first square groove is formed at a right angle at the center of a corner at which the upper surface and the first side meet each other. A first center hole is formed by being penetrated at the center of the first side, and first and second semicircular grooves are formed on both sides around the first center hole. First, second, and third inclined surfaces connected to the upper surface by the second side are formed at a vertex at which the upper surface and the first and second sides meet each other. A second center hole is formed by being penetrated at the center of the second side, and the second and third square grooves extended to the first and third sides are formed in each lower part of the second center hole. A first right groove is horizontally formed between the upper surface and the third and fourth sides, and a second right groove is vertically formed between the upper surface and the first and fourth sides.

Description

TECHNICAL FIELD [0001] The present invention relates to a 5-axis machine tool for a 5-axis machine tool,

The present invention relates to a standard specimen for a machine tool. More particularly, the present invention relates to a standard specimen for a 5-axis machine tool for testing and evaluating the precision of machining accuracy of a 5-axis machine tool.

A machine tool is a device for machining a workpiece by using a machining tool such as a milling cutter, a bit or a drill, and includes a turning center, a machining center, Swiss Turn, Electrical Discharge Machine, Boring Machine, CNC Lathe.

On the other hand, a 3-axis machine tool has a standard workpiece defined in Korean Industrial Standard KS B ISO 10791-7: 2014 for evaluating machining accuracy accuracy of a machine tool. In summary, the specimen should be properly installed in a suitable fixture and the tool should be operated with maximum stability.

The face on which the specimen is to be fixed should be flat. The meaning of stability must be fixed so that the tool can hit and it must be able to process the entire length, such as center hole machining. It is desirable to fix the workpiece by digging to prevent interference with the bolt in a series of machining operations. The specimen material shall be specified by appropriate materials.

As shown in Table 1, M1 and M2 are suitable for 3,4,5-axis machine tools, M3 is for 5-axis machine tools, and M4 is for 4,5-axis machine tools. do.

Kinds Nominal dimension Title M1
Specimen for positioning and contouring
80 Psalm KS B ISO 10791-7, M1_80 160 Psalm KS B ISO 10791-7, M1_160 320 Psalm KS B ISO 10791-7, M1_320 M2
Specimen for face milling 80 Psalm KS B ISO 10791-7, M2_80 160 Psalm KS B ISO 10791-7, M2_160 M3
Cone specimen 15a Psalm KS B ISO 10791-7, M3_15 45a Psalm KS B ISO 10791-7, M3_45 M4
Three-step square specimen
80 Psalm KS B ISO 10791-7, M4_80 160 Psalm KS B ISO 10791-7, M4_160 320 Psalm KS B ISO 10791-7, M5_320 a The half-apex angle of the specimen

Here, the scope of application of the Korean industry standard specifies the accuracy inspection of machining accuracy under finishing condition, that is, the inspection of the accuracy of geometric accuracy of finished workpiece. This standard is intended to provide the minimum conditions necessary to evaluate the accuracy of the machining accuracy of machine tools and considers 3-axis and 5-axis machine tools.

Meanwhile, (Patent Document 1) relates to a standard workpiece for evaluating the precision of a 5-axis machine tool. In summary, a 5-axis machine tool has various revolving shafts in addition to a 3-axis machine tool, And so much more evaluation items are needed. Therefore, there are many limitations in evaluating the machine precision of 5-axis machine tools with items presented in KS and ISO, and additional items need to be derived.

One of the most common methods for determining the accuracy of a 5-axis machine tool is to estimate the precision of the machine tool by measuring the accuracy of the workpiece by machining a test work piece.

However, in the 5-axis machine tool accuracy evaluation items, there are some limitations in grasping all the errors of the 5-axis machine tool. In addition, there is a time-consuming and economical There is a difficulty.

To solve this problem, in order to quantitatively grasp the error factor of the 5-axis machine tool, Patent Document 1 discloses, in 21 items evaluated in the 5-axis machine tool-related ISO standard, 9 pieces The standard workpiece is designed to derive an additional item and to grasp all the evaluation items of the total 30 items established.

Also disclosed is a standard workpiece designed to identify the error factors of the 5-axis machine tool, to grasp the accuracy of the 5-axis machine tool, and to analyze the accuracy with ease.

However, the standard workpiece for the 5-axis machine tool according to the prior art including the patent document 1 is merely used for the purpose of proving the machining performance of the 5-axis machine tool, and thus the accuracy of the 5-axis machine tool is still checked The standard specimen to be evaluated is not defined.

(Non-Patent Document 1) Korean Industry Standard KS B ISO 10791-7: 2014 Korean Patent Publication No. 10-2015-0127942

It is an object of the present invention to provide a standard specimen for a 5-axis machine tool capable of defining a standard for easily examining and evaluating the accuracy of machining accuracy of a 5-axis machine tool.

In order to solve the above problems,

A standard specimen for a 5-axis machine tool according to an embodiment of the present invention is a polyhedral specimen having a flat bottom surface, a top surface formed parallel to the bottom surface, and first, second, third, and fourth side surfaces crossing the top surface,

A first Z-axis hole is formed at the center of the upper surface, and a first protruding disc, a circular groove and a second protruding disc are formed in a concentric fashion in sequence from the first Z-axis hole, A first square hole is formed at a right angle to the center, a first center hole is formed through the center of the first side, first and second semicircular grooves are formed on both sides of the first center hole, First, second, and third inclined surfaces extending from the upper surface to the second side are formed at a vertex at which the first and second side surfaces meet, a second center hole is formed through the center of the second side surface, A first rectangular groove is formed horizontally between the upper surface and the third and fourth side surfaces, and the upper surface and the first and fourth surfaces A second right angle groove can be formed perpendicularly.

In addition, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, the polyhedron is assembled on the upper surface of a jig having a flat top surface formed through a head unit of a 5-axis machine tool, .

In addition, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, the head unit includes an orthogonal head, an extended head, and a universal head .

In the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, second and third Z-axis holes having different diameters may be formed on the upper surface.

Also, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, the third Z-axis hole is formed to have a diameter smaller than that of the first and second Z-axis holes, 1 < / RTI >

Also, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, an opening may be formed in the first and second semicircular grooves toward the bottom surface.

In addition, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, the second inclined surface may be formed at an angle of 45 degrees.

In addition, in the standard specimen for a 5-axis machine tool according to an embodiment of the present invention, an interface may be formed between the first and second right angled grooves.

These solutions will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may appropriately define the concept of a term in order to best describe its invention The present invention should be construed in accordance with the spirit and scope of the present invention.

According to an embodiment of the present invention, improvement of standard specimens for 5-axis machine tools can reduce machining time and machining cost. By re-designing standard workpiece machining conditions based on the ISO 5-axis machine tool accuracy measurement method, by complementing the items outside the correlation similarity, it is possible to perform a one-to-one matching between the 5-axis machine tool evaluation item and the standard specimen machining section to be measured The measurement items can be simplified.

1 is a perspective view showing a standard specimen for a 5-axis machine tool according to an embodiment of the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a 5-axis machine tool,
3 is a plan view showing a standard specimen for a 5-axis machine tool according to an embodiment of the present invention.
4 is a front view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention.
5 to 7 are perspective views showing a standard specimen for a 5-axis machine tool according to an embodiment of the present invention in a different direction.
8 is a front view showing a state in which a standard specimen for a 5-axis machine tool according to an embodiment of the present invention is measured through a 3-dimensional measuring instrument.

The specific aspects, specific technical features of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings. Note that, in the drawings, like reference numerals denote like elements throughout the drawings, unless otherwise indicated. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. The upper surface 10a is formed with a flat bottom surface 10 and is parallel to the bottom surface 10, 3, and 4 side surfaces 20, 30, 40, and 50 intersecting with the upper surface 10a.

FIG. 2 is a front view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a jig with a top surface formed flat through a head unit 3 of a 5-axis machine tool 2 4 are assembled on the upper surface of the test piece 1 and processed into the standard test piece 1. [

1 and 2, a standard specimen 1 for a 5-axis machine tool according to an embodiment of the present invention includes an upper surface 10a formed to be flat and a lower surface 10a parallel to the lower surface 10, And the first, second, third, and fourth sides 20, 30, 40, and 50 intersecting with the upper surface 10a are formed. The polyhedron is contoured, and a center hole And it forms the necessary components for inspection of accuracy of machining accuracy.

The standard specimen 1 is manufactured by assembling a polyhedron on the upper surface of a jig 4 formed by flattening the upper surface of the jig 4 through the head unit 3 of the 5-axis machine tool 2, All the machining including the center machining is performed, and the depth of cut at the machining proceeds to 0.5 mm to constitute the standard specimen 1.

The head unit 3 of the 5-axis machine tool 2 is equipped with a milling cutter, a bit or a drill, for example, on the main shaft 3a, An apparatus that is installed in a machine tool through a RAM mounted on a 5-axis machine tool 2 through an attachment and operates as an orthogonal head, an extended head, or a universal (Universal Head), and the universal head is shown, but it should be interpreted as including all of them.

Therefore, according to the embodiment of the present invention, a standard specimen (1) conforming to the related standard of the other 5-axis machine tool (2) as well as the universal head related standard is provided, .

FIG. 3 is a plan view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. A first Z-axis hole 11 is formed at the center of an upper surface 10a of the polyhedron, A first protruded circular plate 12, a circular groove 13 and a second protruded circular plate 14 are formed in this order on a concentric circle with the axial hole 11. A first square groove 21 is formed at the corner of the upper face 10a, And the first right angled groove 41 is formed on the two sides of the first right angled groove 41. The first right angled groove 41 is formed on both sides of the first right angled groove 41, (1).

4 and 5 illustrate a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. The first, second, and third inclined surfaces 31 and 32 are formed at the upper corners of the first side 20 of the polyhedron, A first center hole 22 is formed at the center, a first square groove 21 is formed at an upper portion centering on the first center hole 22, There is shown a standard specimen 1 in which semicircular grooves 23 and 24 are formed and an opening 25 is formed in the first and second semicircular grooves 23 and 24 toward the bottom face 10.

FIG. 5 is a perspective view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. FIG. 5 is a perspective view of a 5-axis machine tool according to an embodiment of the present invention. 1, 2, and 3 inclined planes 31, 32, and 33 are formed, a first rectangular groove 21 is formed at a right angle to the center of the corner where the upper surface 10a and the first side surface 20 meet, A first center hole 22 is formed at the center of the first side surface 20 and first and second semicircular grooves 23 and 24 are formed at both sides of the first center hole 22, An open face 25 is formed in the first and second semicircular grooves 23 and 24 toward the bottom face and a second center hole 34 is formed in the center of the second side face 30, And the second square groove 35 is formed in the lower part of the center hole 34. [

FIG. 6 is a perspective view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. The first center hole 22 is formed at the center of a third side surface 40 of the polyhedron And the second center hole 34 is formed at the center of the second side face 30 and the second and third square holes 35 and 51 are formed in the lower portions of the second center hole 34, (1).

FIG. 7 is a perspective view of a standard specimen for a 5-axis machine tool according to an embodiment of the present invention. FIG. 7 is a cross- A first center hole 22 is formed at the center of the third side face 40 and a second center hole 34 is formed at the center of the fourth side face 50. [ (A) shows a standard specimen 1 having a through-hole formed therein.

3 to 7, in the standard specimen 1 for a 5-axis machine tool according to an embodiment of the present invention, the first Z-axis hole 11 is formed at the center of the upper surface 10a of the polyhedron. Second and third Z-axis holes 11a and 11b having different diameters may be formed on the upper surface 10a of the polyhedron.

The third Z-axis hole 11b is formed to have a diameter smaller than that of the first and second Z-axis holes 11 and 11a. The third Z- Can be disposed on both sides.

Therefore, according to the embodiment of the present invention, for example, as inspection items for the main shaft through the first, second and third Z-axis holes 11, 11a and 11b, for example, Inspection and inspection of the parallelism between the main axis and the Z axis, as well as the thermal deformation test and the rigidity test according to the rotation of the main shaft.

As the inspection items for the rotary table, for example, it is possible to perform shake inspection of the center hole or the outer peripheral surface, swing of the rotary table top surface, and accuracy of rotation table positioning accuracy and repeat accuracy. As an inspection item for the main shaft and the rotary table, for example, a coaxial line inspection between the tool mounting hole and the rotary table center line, a coaxiality check between the tool mounting surface and the rotary table center line, and a parallelism check between the turret surface and the rotary table center line .

Meanwhile, the standard specimen 1 for a 5-axis machine tool according to an embodiment of the present invention has a first Z-axis hole 11 formed on an upper surface of a polyhedron so as to measure a cylindrical degree of the main shaft, 12, a circular groove 13 and a second protruding disc 14 are sequentially formed.

A first center hole 22 is formed at the center of the first side face 20 and extends to the third side face 40. The first and second center holes 22, The semicircular grooves 23 and 24 are formed. A second center hole 34 is formed at the center of the second side surface 30 and extends to the fourth side surface 50. The first and third side surfaces 20 The second and third square grooves 35 and 51 are formed.

A first square groove 21 is formed at a corner where the upper face 10a and the first side face 20 meet and a second square groove 21 is formed at a corner where the upper face 10a and the first and second side faces 20, The first, second and third inclined surfaces 31, 32 and 33 extending from the first side surface 10a to the second side surface 30 are formed and the upper surface 10a and the third and fourth side surfaces 40 and 50 And a second right angle groove 52 is formed vertically between the upper surface 10a and the first and fourth side surfaces 20 and between the upper surface 10a and the first and fourth side surfaces 20, A boundary surface 52a is formed between the first and second right angled grooves 41 and 52 so as to complement the correlation item between the B axis and the D axis.

The second inclined surface 32 is formed at an angle of 45 degrees and the first and third inclined surfaces 31 and 33 are formed on both sides of the second inclined surface 32 so that the upper surface 10a and the second And the side surfaces 30, respectively. An opening 25 is formed in the first and second semicircular grooves 23 and 24 toward the bottom surface 10 so that the first and second semicircular grooves 23 and 24 are formed through the opening 25, It is possible to easily check accuracy accuracy of the pivot shaft.

Therefore, according to an embodiment of the present invention, the B-axis indicating the inclination of the head unit of the 5-axis machine tool, the correlation between the D axis and the B axis, the correlation between the D axis and the S axis, Y, and Z axes.

For example, as an item for checking the accuracy of accuracy of the B-axis, it is possible to check the perpendicularity between the B-axis and the X-axis, the perpendicularity between the B-axis and the Z-axis, and the parallelism between the B- have. Especially, when the B axis is turning, it is possible to check the parallelism of the turning milling head pivoting axis with respect to the XZ plane and the accuracy of positioning accuracy and repeatability in the B axis direction.

As an accuracy check item for the correlation between the D axis and the B axis, for example, it is possible to inspect the 45-degree accuracy accuracy of the D axis and the headbase B axis, and to perform the same plane inspection of the D axis and the headbase B axis. As an accuracy check item for the correlation between the D axis and the S axis, for example, it is possible to inspect the accuracy of the 45 degree angle between the D axis and the main axis, and the same plane inspection of the D axis and the main axis.

It is also possible to inspect X, Y and Z axis straightness, X, Y and Z axis angular deviation and X, Y, Z axis perpendicularity inspection items for X, Y, have.

8 is a front view illustrating a state in which a standard specimen for a 5-axis machine tool according to an exemplary embodiment of the present invention is measured by a 3-dimensional measuring machine. The standard specimen 1 ) Is placed on the test tube.

As shown in FIG. 8, a standard test piece 1 for a 5-axis machine tool according to an embodiment of the present invention can be subjected to a machining test using a three-dimensional measuring machine 5.

That is, the standard specimen 1 is placed on the table 5a of the three-dimensional measuring instrument 5 to perform an accuracy check, and an average value after repeated measurement, for example, three measurements, is used for accuracy.

While the present invention has been described in detail with reference to the exemplary embodiments, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It is to be understood that the terms "comprises", "comprising", or "having", etc., as used herein, mean that a component can be implanted unless specifically stated to the contrary, And all terms including technical or scientific terms are to be construed as including, unless otherwise defined, by a person of ordinary skill in the art to which the invention pertains in general Have the same meaning.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1 - Standard Specimen 2 - Machine Tools
3 - head unit 3a - spindle
4-jig 5-dimensional measuring instrument
5a - Table 10 - Bottom view
10a - upper surface 11 - first Z-axis hole
11a - Second Z-axis hole 11b - Third Z-axis hole
12 - first protruding disc 13 - circular groove
14 - Second protrusion disc 20 - First side
21 - first square groove 22 - first center hole
23 - 1st semicircular groove 24 - 2nd semicircular groove
25 - opening 30 - second side
31 - first inclined plane 32 - second inclined plane
33 - third slope 34 - second center hole
35 - second square groove 40 - third side
41 - first right angle groove 50 - fourth side
51 - Third square groove 52 - Second right angle groove
52a -

Claims (7)

A bottom surface formed to be flat, a top surface formed in parallel with the bottom surface, and first, second, third, and fourth surfaces crossing the top surface,
A first Z-axis hole is formed at the center of the upper surface, and a first protruding disc, a circular groove and a second protruding disc are formed in a concentric fashion in sequence from the first Z-axis hole, A first square hole is formed at a right angle to the center, a first center hole is formed through the center of the first side face, first and second semicircular grooves are formed on both sides of the first center hole, First, second, and third inclined surfaces extending from the upper surface to the second side are formed at a vertex at which the first and second side surfaces meet, a second center hole is formed through the center of the second side surface, A first rectangular groove is formed horizontally between the upper surface and the third and fourth side surfaces, and the upper surface and the first and fourth surfaces And a second right angle groove is formed perpendicularly between the first and second right angles.
The method of claim 1,
The polyhedron is a standard specimen for a 5-axis machine tool, which is machined by being assembled on the upper surface of a jig having a flat top surface formed through a head unit of a 5-axis machine tool.
The method according to claim 1,
Standard specimen for a 5-axis machine tool having second and third Z-axis holes having different diameters on the upper surface.
The method of claim 3,
And the third Z-axis hole is formed to be smaller in diameter than the first and second Z-axis holes, and is disposed on both sides of the first Z-axis hole, and is disposed on both sides of the first Z-axis hole.
The method according to claim 1,
A standard specimen for a 5-axis machine tool having an opening face formed from the first and second semicircular grooves toward the bottom face.
The method according to claim 1,
And the second inclined surface is formed at an angle of 45 degrees.
The method according to claim 1,
And an interface is formed between the first and second perpendicular grooves.

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