KR101456996B1 - Position adjustment apparatus for headstock and multiple spindle machine including the same - Google Patents

Position adjustment apparatus for headstock and multiple spindle machine including the same Download PDF

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Publication number
KR101456996B1
KR101456996B1 KR20140033592A KR20140033592A KR101456996B1 KR 101456996 B1 KR101456996 B1 KR 101456996B1 KR 20140033592 A KR20140033592 A KR 20140033592A KR 20140033592 A KR20140033592 A KR 20140033592A KR 101456996 B1 KR101456996 B1 KR 101456996B1
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KR
South Korea
Prior art keywords
main shaft
spindle
hole
ring portion
position adjusting
Prior art date
Application number
KR20140033592A
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Korean (ko)
Inventor
이종기
Original Assignee
이종기
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to KR20140033592A priority Critical patent/KR101456996B1/en
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Publication of KR101456996B1 publication Critical patent/KR101456996B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2216—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool into its holder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • B23Q5/42—Mechanism associated with headstock

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

The present invention relates to a spindle position adjusting device and a multiaxial machining apparatus including the same, and more particularly, to a spindle position adjusting device which includes a spindle fixing end capable of fixing a spindle, a spindle position adjusting device positioned outside the spindle fixing end, And a cushioning member coupled to the spindle position adjusting unit and contacting the spindle fixing end and a cushioning member connected to the spindle position adjusting unit and applying an elastic force to the spindle position adjusting unit in the direction of the spindle fixing end.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spindle position adjusting device and a multi-

The present invention is intended to coincide the positions of the cutting tools mounted on the main spindles in a multi-axis machining machine in which two or more main spindles are installed.

The multi-axis processing machine is a device in which two or more main axes are arranged at regular intervals and the workpieces are arranged at the same interval to simultaneously process two or more workpieces. Recently, it is widely used for mass production of products such as mobile phone frames.

In order to simultaneously process two or more workpieces in such a multi-axis machining machine, the position of the cutting tool mounted on each of the main spindles must be precisely aligned on the same line. At present, And the machining deviation frequently occurs due to the positional deviation of the cutting tool. Accordingly, there is a demand for a technique that can easily and precisely adjust the position of the cutting tool mounted on each main axis.

Registered utility model No. 20-0414789 (2006.04.18) Patent Registration No. 10-0796260 (Jan. 14, 2008)

The present invention relates to a spindle position adjusting device for finely adjusting the position of main spindles and precisely aligning the positions of cutting tools mounted on the main spindles on the same line so that a large number of workpieces can be machined without deviation, A multi-axis processing machine is provided.

The spindle position adjusting apparatus according to an embodiment of the present invention includes a spindle fixing end capable of fixing a spindle, a spindle position adjusting unit positioned outside the spindle fixing end and capable of being coupled to the spindle, And a cushioning member connected to the spindle position adjusting unit and applying an elastic force to the spindle position adjusting unit in the direction of the main shaft fixing end.

The main shaft fixing end is formed with a through hole into which the main shaft is inserted and a tightening gap for fixing the main shaft, and the main shaft can move according to the adjustment of the tightening clearance.

The main axis position adjusting unit may include a body that can be coupled to a part of the main shaft and has a screw on an outer circumferential surface thereof and a fixing member having at least a portion thereof located in the body and a side of which is coupled to the main shaft fixing end, The inner surface of the ring portion is formed with a screw to be coupled with the screw of the body, and the buffer member surrounds the fixing member and can apply an elastic force to the body in the direction of the main shaft fixing end. One side of the buffer member may be connected to the body and the other side may be in contact with the other side of the fixing member.

A multi-axis processing machine according to an embodiment of the present invention includes a table on which a workpiece can be placed, a column movably coupled to the table, and a main shaft movably coupled to the column, The column includes a main shaft liftably connected to the main shaft, at least one main shaft position adjuster coupled to the main shaft lift, a main shaft coupled to the main shaft position adjuster, and a driving unit for transmitting power to the main shaft .

According to the present invention, the worker can precisely align the positions of the cutting tools on the same line by finely adjusting the position of the main shaft by loosening the fastening screw of the main shaft fixed end and rotating the ring portion. Accordingly, cutting tool setting time is shortened, and a large number of workpieces can be machined without any deviation by precisely set cutting tools.

1 is a perspective view showing a multi-axis processing machine according to an embodiment of the present invention;
2 is an enlarged view of a part of the main shaft shown in Fig.
3 is an exploded perspective view showing the spindle position adjusting device shown in Fig.
4 is a cross-sectional view of the spindle position adjusting device taken along the line IV-IV shown in Fig.
5 is an exploded sectional view of the spindle position adjusting device shown in Fig.
6 is a cross-sectional view of the spindle position adjusting device taken along the line VI-VI shown in FIG.
7 is an enlarged view of a portion A shown in Fig.
Figures 8 and 9 are views of the spindle positioning device.
10 is an enlarged view of a portion B shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated with like reference numerals throughout the specification.

The spindle position adjusting device according to the embodiment of the present invention is applied to a multi-axis machining machine of an embodiment of the present invention. Hereinafter, a multi-axis machining machine to which a spindle position adjusting device is applied will be mainly described.

Hereinafter, a multi-axis processing machine according to an embodiment of the present invention will be described with reference to Figs. 1 to 7. Fig.

FIG. 1 is a perspective view showing a multi-axis processing machine according to an embodiment of the present invention, FIG. 2 is an enlarged view of a part of the main shaft shown in FIG. 1, and FIG. 3 is a view FIG. 4 is a cross-sectional view of the spindle position adjusting device taken along the line IV-IV of FIG. 2 (the main spindle is not shown in cross section), and FIG. 5 is a cross- 6 is a cross-sectional view of the spindle position adjusting device taken along the line VI-VI shown in FIG. 4, and FIG. 7 is an enlarged view of the portion A shown in FIG.

1, a multi-axis processing machine 1 according to the present embodiment includes a table 10, a column 20, a main shaft 3, and a control plate 50, .

The table 10 has a predetermined width, in which the workpiece is placed. The table 10 may be provided with an adsorption device (not shown) or a jig (not shown) for adsorbing and fixing a workpiece.

The column 20 is installed in the table 10 and can move in the longitudinal direction Y of the table 10. [ The movement of the column 20 can be performed by a ball screw (not shown), an LM guide 21, an LM block 22, etc. connected to a motor (not shown).

The main shaft 3 is connected to the column 20 and includes a main shaft main body (not shown), a main shaft base 31, a main shaft 36, a main shaft position adjusting device 32 and a driving portion 37.

The main shaft main body is movably connected to the column 20 in the left-right direction X, and the main shaft lifting base 31 is coupled to the main shaft main body movably in the vertical direction Z. The main shaft 36 is coupled to the main shaft lifting base 31 through the main shaft position adjusting device 32 and is connected to the drive unit 37 in power connection.

On the other hand, the table 10 is provided with a control panel 50 for controlling the column 20, the main shaft main body, the main shaft platform 31 and the main shaft 36, Is installed. The input unit may be exposed to the outside of the control panel 50 for convenience.

The internal structure of the table 10, the column 20, the main shaft 3, the main shaft 30 and the main shaft 36 as described above can be applied to a well-known machine tool construction, The description is omitted.

Hereinafter, the spindle position adjusting device 32 will be described in detail with reference to FIGS. 3 to 5. FIG. In the multi-axis processing machine of this embodiment, two spindle position adjusting devices 32 are provided, but the spindle position adjusting device 32 may be formed in various numbers according to the mechanical design.

The main shaft position adjusting device 32 includes a main shaft fixing end 33, a main shaft position adjusting portion 34, a buffer member 38 and a ring portion 35. The spindle position adjustment device 32 is mounted on the spindle platform 31 and the spindle 36 is coupled to the spindle position adjustment device 32. The position of the main spindle 36 can be easily and precisely adjusted by the main spindle position adjusting device 32 and the position of the cutting tool 2 connected to the main spindle 36 can be precisely controlled.

The main shaft fixed end 33 is formed in a block shape and mounted on the main shaft lifting base 31 (see FIG. 2) with bolts 331. The main shaft fixing end 33 is formed with a through hole 33b into which the main shaft 36 is inserted and a tightening gap 33c formed by cutting a part of the main shaft fixing end 33 in the up and down direction Z is formed . The main shaft 36 is fixed while the through hole 33b is tightened by tightening the tightening bolt 332 which is coupled to the main shaft fixed end 33 in the lateral direction X and penetrates the tightening gap 33c.

The main shaft positioning portion 34 includes a body 341, a tongue bolt 343 and a fixing member 344 and is coupled to the main shaft 36.

The body 341 is coupled to the outer circumferential surface of the main shaft 36 and is fixed by a tongue bolt 343. A screw 341b is formed on the outer circumferential surface of the body 341, and a locking protrusion 341d is formed on the lower circumferential surface. A screw hole 341c is formed in the body 341 inwardly from the outer circumferential surface.

The upper surface 341a of the body 341 and the lower surface 33a of the main shaft fixing end 33 face each other and the upper surface 341a of the body 341 and the lower surface 33a of the main shaft fixing end 33 are spaced You can fall or touch. The diameter of the body 341 is smaller than the diameter of the lower surface 33a of the main fixed end 33 so that the outer peripheral surface of the body 341 does not deviate from the lower surface 33a of the main fixed end 33.

Between the outer surface and the inner surface of the body 341, a coupling hole 342 penetrating in the vertical direction is formed. The coupling hole 342 includes a first hole 342a adjacent the top surface 341a and a second hole 324b adjacent the opposite surface. The first hole 342a and the second hole 324b are connected to each other and the diameter of the second hole 324b is larger than the diameter of the first hole 342a. Due to the difference in diameters of the first and second holes 342a and 324b, the coupling hole 342 is formed with the step 342c. The depth of the first hole 342a is formed deeper than the depth of the second hole 324b.

The body 341 may be formed integrally with the main shaft 36 when the main shaft 36 is machined.

The tongue bolt 343 is fastened to the screw hole 341c, one side of which is in contact with the main shaft 36 and the other side of which is not protruded outside the screw hole 341c (see FIG. 6). The body 341 and the main shaft 36 can be engaged by the coupling of the tongue bolts 343. So that the main shaft 36 can move together when the body 341 moves.

The main shaft 36 is formed with a coupling hole 362a to which the tongue bolt 343 is coupled. However, a groove having a predetermined width and depth may be formed at 360 degrees along the circumferential direction of the main shaft 36, and the tongue bolt 343 may be positioned in the groove.

If the body 341 is formed integrally with the spindle housing 362 or fixed in a welding manner, the tongue bolt 343 may be omitted.

The fixing member 344 includes a body portion 344b that is threaded at a portion and a head portion 344a that is connected to the body portion 344b. The fixing member 344 is disposed in the coupling hole 342. The screw formed in the body portion 344a of the fixing member 344 passes through the first hole 342a and is fastened to the lower surface of the main shaft fixing end 33. The head portion 344a is positioned in the second hole 324b do. The diameter of the body portion 344b is smaller than the diameter of the first hole 342a and the second hole 342b. The diameter of the head portion 344a is larger than the diameter of the first hole 342a and smaller than the diameter of the second hole 342b. The head portion 344a and the step 342c face each other with an interval G1 (see FIG. 7).

The cushioning member 38 is a spring and has one side abutting the step 342c and the other side abutting the head 344a of the fixing member 344 with the fixing member 344 wound. The body 341 is movable and one side of the fixing member 344 is fixed to the main shaft fixing end 33 so that the elastic force of the buffer member 38 can be transmitted to the body 341 in the direction of the main shaft fixing end 33 . The body 341 is moved in the direction of the main shaft fixed end 33 by the elastic force and the main shaft 36 connected to the body 341 is also urged upward.

The ring portion 35 is disposed on the outer circumferential surface of the body 341 to exert a force to move the body 341. Since the tongue bolt 343 is positioned within the screw hole 341c, the ring portion 35 can move without interference with the tongue bolt 343 (see Fig. 6). The ring portion 35 is in contact with the lower surface 33a of the main shaft fixing end 33 by the elastic force of the buffer member 38 transmitted to the body 341. [

On the inner circumferential surface of the ring portion 35, a screw 35a to be fastened to the screw 341b of the body 341 is formed. The ring portion 35 can be rotated by the operation of the operator in a state of being engaged with the body 341. [ The rotational force of the ring portion 35 allows the body 341 to move. A knurling (not shown) may be formed on the outer circumferential surface of the ring portion 35 so as not to slip.

The main body 341 can be moved up and down along the rotation direction of the ring part 35 and the main shaft 36 connected to the body 341 can also be moved up and down. The ring portion 35 is kept in contact with the bottom surface 33a of the main shaft fixed end 33 by the elastic force of the buffer member 38 when the body 341 moves.

The ring portion 35 can not be rotated when the cushioning member 38 is completely compressed when the body 341 moves or when the engaging step 341d contacts the ring portion 35. [

On the other hand, the movement range of the body 341 can be moved within the remaining area G3 obtained by subtracting the area G2 occupied when the buffer member 38 is completely compressed within the interval G1 (refer to FIG. 7).

Next, the operation of the above-described multi-axis processing machine will be described with reference to Figs. 1, 2, 8 to 10.

1, two main spindles 36 are provided on the main spindle 31 so that the end portions of the cutting tools 2 coupled to the one and the other main spindle 36 can be fixed on the same line The position of the main shaft 36 is adjusted.

First, a gauge (not shown) is disposed below the main shaft 36 to be adjusted, and the end of the cutting tool 2 is brought into contact with the gauge. At this time, the gauge displays the preset scale. If the position of the main shaft 36 is adjusted by using the spindle position adjustment device 32, the scale of the gauge may be changed.

The position of the main shaft 36 is adjusted as follows.

When the bolt 332 of the main shaft fixed end 33 is loosened, the main shaft 36 becomes movable in the up and down direction within the through hole 33b.

8 to 10, in a state in which the upper surface 341a of the body 341 and the upper surface 35b of the ring portion 35 are in contact with the bottom surface 33a of the main shaft fixing end 33, the ring portion 35 The upper surface 35b is continuously brought into close contact with the lower surface 33a of the main shaft fixing end 33 while the movable body 341 is fixed to the main shaft fixing end 33a while the engaging positions of the screws 341c and 35a are changed. 33). The main shaft 36 is lowered. The fixing member 344 fixed to the main shaft fixed end 33 moves the body 341 in a state where it is not moving. The moving body 341 does not interfere with the fixing member 344 because the diameter of the head portion 344a is smaller than the diameter of the first hole 342a.

The upper surface 341a of the body 341 is separated from the lower surface 33a of the main fixed end 33 and the buffering member 38 is compressed between the stepped portion 342c and the head portion 334a , 10). When the cushioning member 38 is completely compressed in a state where the screws 341c and 35a are tightened to some extent, the ring 35 can not rotate any more and the body 341 is not moved any more. The body 341 and the ring portion 35 are not completely separated.

On the contrary, when the ring portion 35 is rotated in the other direction while the upper surface 341a of the body 341 and the lower surface 33a of the main shaft fixing end 33 are separated from each other, the body 341 is rotated by the screws 341c and 35a, And moves in the direction of the main shaft fixed end 33 by changing the engagement position of the main shaft fixed end 33. [

When the upper surface 341a of the body 341 contacts the lower surface 33a of the main shaft fixed end 33 or the engagement portion 341d contacts the ring portion 35, The lower surface 33a is completely in a close contact state and can not be rotated any more, and the body 341 can not move either (see FIG. 7).

The main shaft 36 coupled with the body 341 moves together with the movement of the body 341 as the ring portion 35 rotates. The movement of the main shaft 36 causes the cutting tool 2 to move, and the scale of the gauge is changed according to the position of the moving cutting tool 2. In this way, the gauge scale of each of the main shafts 36 can be matched and the position of each cutting tool 2 can be precisely fixed on the same line.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

1: Multi-axis processing machine 10: Table
20: Column 3: Headstock
31: spindle lift platform 32: spindle position adjustment device
33: spindle fixing end 33a:
33b: through hole 33c: tightening gap
331, 332: bolt 34: spindle position adjusting section
341: body 341a: upper surface
341b: Screw 341c:
342: coupling hole 342a: first hole
342b: second hole 342c: step
343: tongue bolt 344: fixing member
344a: head part 35: ring part
35a: screw 35b: upper surface
38: buffer member 36: spindle
37: driving unit 38: buffer member
50: Control panel 2: Cutting tool
G: Head step gap

Claims (4)

A main shaft fixed end capable of fixing the main shaft,
A main body which can be fixed to the lower side of the main shaft and has a hole formed at a central portion and which can pass the main shaft and has a screw formed on an outer peripheral surface thereof and a coupling hole formed between an inner surface and an outer surface of the main body, A main shaft position adjusting unit including a fixing member coupled to a lower surface of the main shaft,
A ring portion having a thread corresponding to a screw of the body on an inner circumferential surface thereof and screwed on the body and having an upper surface in contact with the lower surface of the spindle fixed end,
A spring that is located in the coupling hole and surrounds the fixing member and applies an elastic force to the body so that the ring contacts the lower surface of the main shaft fixing end,
/ RTI >
When the ring portion is rotated, the rotational force of the ring portion is transmitted to the outer circumferential surface of the body to change the screw engagement position with the body, and the body can move up and down along with the main shaft in accordance with the rotation of the ring portion
Spindle positioner. The method of claim 1,
Wherein the body is raised by the rotation of the ring portion so that when the engaging jaw contacts the lower surface of the ring portion, the ring portion is brought into contact with the lower surface of the body, Is not further rotated in the direction for raising the main spindle position adjusting device. The method of claim 1,
Wherein the fixing member includes a body portion and a head portion,
Wherein the coupling hole includes a first hole adjacent to an upper surface of the body and a second hole adjacent to a lower surface of the body, wherein the first hole and the second hole are connected to each other, And the first and second holes are formed with a step in the coupling hole due to a difference in diameter between the first hole and the second hole and both ends of the spring are in contact with the step portion and the head portion of the fixing member,
Wherein a diameter of a head portion of the fixing member is larger than a diameter of the first hole and smaller than a diameter of the second hole, a diameter of a body portion of the fixing member is smaller than a diameter of the first hole, The body can be moved up and down in a straight line
Spindle positioner. Tables on which workpieces can be placed,
A column movably coupled to the table, and
A main shaft movable in the column,
Lt; / RTI >
The above-
A main shaft platform vertically connected to the column,
At least one spindle positioning device coupled to the spindle platform and defined in any one of claims 1 to 3,
A spindle coupled to the spindle position adjusting device,
A driving unit for transmitting power to the main shaft;
Containing
Multiaxial Machining Machine.
KR20140033592A 2014-03-21 2014-03-21 Position adjustment apparatus for headstock and multiple spindle machine including the same KR101456996B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20140033592A KR101456996B1 (en) 2014-03-21 2014-03-21 Position adjustment apparatus for headstock and multiple spindle machine including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20140033592A KR101456996B1 (en) 2014-03-21 2014-03-21 Position adjustment apparatus for headstock and multiple spindle machine including the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210245265A1 (en) * 2020-02-08 2021-08-12 Jr Automation Technologies, Llc Drill system, an upper drill tool and a lower drill tool for precision forming of openings in a bracket, and methods of use

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100943266B1 (en) * 2009-08-29 2010-02-23 세미인포텍(주) Moving and fixing device for spindle motor
JP2011115888A (en) 2009-12-03 2011-06-16 Kuroda Precision Ind Ltd Tool holder
JP2012086356A (en) * 2010-09-13 2012-05-10 Jacob Antriebstechnik Gmbh Device to hold work spindle
KR101305422B1 (en) * 2013-04-05 2013-09-06 (주)에스디테크 Spindle unit for cnc lathe and matal packing manufacturing method for valve which uses this

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100943266B1 (en) * 2009-08-29 2010-02-23 세미인포텍(주) Moving and fixing device for spindle motor
JP2011115888A (en) 2009-12-03 2011-06-16 Kuroda Precision Ind Ltd Tool holder
JP2012086356A (en) * 2010-09-13 2012-05-10 Jacob Antriebstechnik Gmbh Device to hold work spindle
KR101305422B1 (en) * 2013-04-05 2013-09-06 (주)에스디테크 Spindle unit for cnc lathe and matal packing manufacturing method for valve which uses this

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210245265A1 (en) * 2020-02-08 2021-08-12 Jr Automation Technologies, Llc Drill system, an upper drill tool and a lower drill tool for precision forming of openings in a bracket, and methods of use
US20210245264A1 (en) * 2020-02-08 2021-08-12 Jr Automation Technologies, Llc Chuck assembly for a drill, a drill tool, and drill bit member for use in association with a chuck assembly
US11833592B2 (en) * 2020-02-08 2023-12-05 Jr Automation Technologies, Llc Drill system, an upper drill tool and a lower drill tool for precision forming of openings in a bracket, and methods of use

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