WO2011055597A1 - ラムたわみ補正装置及び補正方法 - Google Patents
ラムたわみ補正装置及び補正方法 Download PDFInfo
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- WO2011055597A1 WO2011055597A1 PCT/JP2010/066477 JP2010066477W WO2011055597A1 WO 2011055597 A1 WO2011055597 A1 WO 2011055597A1 JP 2010066477 W JP2010066477 W JP 2010066477W WO 2011055597 A1 WO2011055597 A1 WO 2011055597A1
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- ram
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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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
- B23Q11/0028—Arrangements compensating weight or flexion on parts of the machine by actively reacting to a change of the configuration of the machine
-
- 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
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
-
- 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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
Definitions
- the present invention relates to a ram deflection correction device and a correction method for a horizontal machine tool or the like.
- Fig. 7 shows an outline of a conventional horizontal machine tool.
- a column base 52 is provided on a bed 51 so as to be movable in a horizontal direction (referred to as a front-rear direction for convenience), and a column 53 is erected on the column base 52.
- a saddle 54 is supported on one side surface of the column 53 so as to be movable in the vertical direction (referred to as an up-down direction for the sake of convenience).
- the saddle 54 has a horizontal direction (referred to as a left-right direction H for the sake of convenience). .) Is supported so as to be movable.
- the ram 55 has a main shaft, and the workpiece to be processed is processed using a tool attached to the tip of the main shaft.
- a tension bar 61 is provided in the longitudinal direction inside the ram 55 along the left-right direction H.
- a tensile force F is applied to the ram 55 at the distal end side.
- a tension portion 61a is provided to the ram 55, and a piston 61b and a cylinder portion 60 are provided on the rear end side of the ram 55.
- FIG. 9 shows a graph comparing the relationship between the ram discharge amount and the ram deflection amount with and without the tension bar. As shown in the graph of FIG. 9, the displacement of the ram tip can be corrected by using a tension bar as shown in FIG. Japanese Patent Publication No. 03-064264
- the conventional tension bar as shown in FIG. 8 can correct the displacement of the ram tip, but as can be seen from FIG. 9, as a result of the correction, the ram tip is inclined. Since the inclination of the ram tip varies depending on the load applied to the ram tip (with or without attachment, the type), if the displacement of the ram tip is prioritized and corrected, the inclination of the ram tip increases and the spindle tilts, resulting in a machined surface. There arises a problem that a step is formed in the connecting portion. On the other hand, the conventional tension bar as shown in FIG. 8 can correct the inclination of the ram tip in preference to the displacement of the ram tip, but in this case, the displacement of the ram tip is completely corrected.
- the present invention has been made in view of the above problems, and an object thereof is to provide a ram deflection correction device and a correction method that can simultaneously correct displacement and inclination of the ram tip.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- a first tension bar that is provided above the center line of the ram along the horizontal direction and applies a first tensile force that pulls the tip of the ram inward;
- a second tension bar that is provided above the center line of the ram along the horizontal direction and applies a second tensile force that pulls the position inside the tip of the first tension bar inward.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- the first tension bar and the second tension bar are arranged at positions separated from the bending center of the ram.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- the first tension bar and the second tension bar are arranged coaxially.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- a first compression bar that is provided below the center line of the ram along the horizontal direction and that provides a first pushing force that pushes the tip of the ram outward;
- a second compression bar that is provided below the center line of the ram along the horizontal direction and that provides a second pushing force that pushes the position inside the tip of the first tension bar outward.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- the first compression bar and the second compression bar are arranged at positions separated downward from the bending center of the ram.
- a ram deflection correcting device for solving the above-mentioned problems is as follows.
- the first compression bar and the second compression bar are arranged coaxially.
- a ram deflection correction method for solving the above-mentioned problems is as follows.
- a ram deflection correction method using the ram deflection correction device according to any one of the first to third inventions,
- the displacement amount of the ram tip is zero, and the sum of the bending moment of the ram generated by the weight of the ram and the bending moment due to the first tensile force and the second tensile force is zero at the ram tip.
- the obtained first tensile force and second tensile force are applied by the first tension bar and the second tension bar.
- a ram deflection correcting method for solving the above-mentioned problems is as follows.
- a ram deflection correction method using the ram deflection correction device according to any one of the fourth to sixth inventions,
- the displacement amount of the ram tip is zero, and the sum of the bending moment of the ram generated by the weight of the ram and the bending moment of the first pushing force and the second pushing force becomes zero at the ram tip.
- the obtained first pressing force and the second pressing force are applied by the first compression bar and the second compression bar.
- a ram deflection correction method for solving the above-described problems is as follows.
- the ram deflection correcting method according to the seventh or eighth invention, When an attachment is attached to the ram tip, the bending weight of the ram is obtained by adding the weight of the attachment to the weight of the ram.
- the displacement of the ram tip not only the displacement of the ram tip but also the inclination of the ram tip can be corrected at the same time, and the straightness and squareness of the ram can be improved.
- the displacement and inclination of the ram tip can be corrected simultaneously, variations in the displacement and inclination of the ram tip that occur for each attachment with different mass can be suppressed, and high machining accuracy can be achieved with any attachment. be able to.
- 1 is a schematic view showing a horizontal machine tool having a ram deflection correcting device according to the present invention. It is a figure explaining the ram deflection correction device concerning the present invention. It is sectional drawing of the ram deflection correction apparatus which concerns on this invention. It is a bending moment diagram explaining the principle of ram deflection correction concerning the present invention, and (a) shows the 1st stage tension bar and (b) shows the 2nd stage tension bar.
- 6 is a flowchart showing a ram deflection correction method according to the present invention. It is the graph showing the effect of the present invention about the relation between the amount of ram out and the amount of ram deflection. It is the schematic which shows the conventional horizontal machine tool. It is a figure explaining the conventional tension bar. It is the graph which compared the case where there is a tension bar, and the case where there is no tension bar regarding the relationship between the amount of ram discharge and the amount of ram deflection.
- FIG. 1 is a schematic view showing a horizontal machine tool having a ram deflection correcting device of the present embodiment
- FIG. 2 is a diagram for explaining the ram deflection correcting device
- FIG. 3 is a sectional view of the ram deflection correcting device. It is.
- a horizontal machine tool 10 shown in FIG. 1 has a column base 12 provided on a bed 11 so as to be movable in the front-rear direction, and a column 13 is erected on the column base 12.
- a saddle 14 is supported on one side of the column 13 so as to be movable in the vertical direction, and a ram 15 is supported on the saddle 14 so as to be movable in the left-right direction H.
- the ram 15 has a main shaft, and the workpiece to be processed is processed using a tool attached to the tip of the main shaft.
- the first tension bar 21 and the second tension bar 21 A two-stage tension bar (hereinafter referred to as a two-stage tension bar) 20 having a tension bar 22 is provided on the ram 15 so that not only the displacement of the ram 15 tip but also the inclination of the ram 15 tip can be corrected simultaneously. ing.
- the two-stage tension bar 20 has a first tension bar 21 and a second tension bar 22 arranged on the same axis, and is provided above the center line L of the ram 15. Further, on the rear end side of the ram 15, a cylinder portion 23 for applying a tensile force F 1 (first tensile force) and a tensile force F 2 (second tensile force) to the first tension bar 21 and the second tension bar 22. Is provided.
- the first tension bar 21 is provided along the longitudinal direction (left-right direction H) of the ram 15 over substantially the entire length thereof. Specifically, the first tension bar 21 is provided with a tension portion 21 a for applying a tensile force F ⁇ b> 1 to the ram 15 on the front end side of the ram 15.
- the piston 21b and the support portion 23a are provided, and an oil chamber 24 is formed between the piston 21b and the support portion 23a.
- the second tension bar 22 is also provided along the longitudinal direction (left and right direction H) of the ram 15, but its length is shorter than that of the first tension bar 21.
- the second tension bar 22 is arranged on the outer peripheral side of the first tension bar 21 so as to be coaxial with the first tension bar 21.
- the columnar first tension bar 21 is coaxially arranged inside the cylindrical second tension bar 22, which is a so-called double cylinder structure.
- the second tension bar 22 is not a front end side of the ram 15 but a tension for applying a tensile force F2 to the ram 15 on the inner side (near the rear end) from the positions of the tensile portion 21a and the receiving portion 15a.
- a portion 22a is provided, and a cylinder portion 23 on the rear end side of the ram 15 is provided with a piston 22b and a support portion 23b, and an oil chamber 25 is formed between the piston 22b and the support portion 23b.
- the pressures P1 and P2 to the oil chambers 24 and 25 can be controlled, not only the proportional electromagnetic control valve but also other pressure variable devices may be used.
- the tensile forces F1 and F2 generated by the first tension bar 21 and the second tension bar 22 may be generated using a driving force of a motor or the like.
- the reason why the two-stage tension bar 20 in this embodiment can also correct the inclination of the tip of the ram 15 will be described.
- the conventional tension bar is referred to as a one-stage tension bar.
- the description thereof is omitted here.
- ⁇ ⁇ Deflection due to the ram's own weight is caused by the bending moment generated by the uniform load.
- the bending moment generated by the self-weight is a quadratic curve as shown by the alternate long and short dash line graphs in FIGS. 4 (a) and 4 (b).
- the force applied by the tension force of the tension bar is a moment and is constant.
- the bending moment by the first-stage tension bar is represented by a solid line graph in FIG. 4A
- the bending moment by the second-stage tension bar is represented by a solid line graph in FIG. 4B.
- the tension force of the tension bar is set so that the displacement amount of the ram tip is zero.
- the sum of the bending moment of the ram generated by the ram's own weight and the bending moment of the tension bar at the ram tip (hereinafter referred to as the ram deflection) It is only required that “the sum of bending moments”) can be brought close to “0”.
- the sum of bending moments can be brought close to “0”.
- a single-stage tension bar if the bending moment generated by the first-stage tension bar is applied to the bending moment generated by its own weight, a bending moment diagram as shown in the dotted line graph in FIG. It is difficult to bring the sum of bending moments close to “0” at the ram tip (in FIG. 4A, at a position where the ram length is 1.6 m).
- the sum of the bending moments is brought close to “0” at the ram tip by using a two-stage tension bar.
- a two-stage tension bar if the bending moment generated by the two-stage tension bar is applied to the bending moment of the ram generated by the ram's own weight, the bending moment line as shown in the dotted line graph in FIG.
- the sum of bending moments is set to “0” at the ram tip (the position where the ram extension amount is 1.6 m in FIG. 4B). It can be approached.
- the tension bar is of a two-stage type, the sum of bending moments can be brought close to “0” at the ram tip, and not only the displacement amount of the ram tip but also the inclination is corrected for the ram deflection. It becomes possible. If the tension bar is a multi-stage type (for example, three-stage type) larger than two stages, the degree of freedom of correction is further increased, and the sum of bending moments can be made closer to “0” at the ram tip.
- the position of the second tension bar 22 arranged inside in the two-stage tension bar 20 in the horizontal direction H is as follows.
- the position of the second tension bar 22 disposed inside in the horizontal direction H that is, the position of the tension portion 22a of the second tension bar 22 in the horizontal direction H is as described above.
- the sum of bending moments may be arranged so as to approach “0”.
- the bending moment diagrams shown in FIGS. 4 (a) and 4 (b) are for the case where no attachment is attached to the ram 15, but the same applies when the attachment is attached.
- the amount of the ram 15 fed, the weight of the attachment to be attached, the rigidity of the ram 15, the tensile force F1 of the first tension bar 21, the second tension A bending moment diagram as shown in FIG. 4B is calculated from the tensile force F2 of the bar 22, and the sum of bending moments at the tip of the ram 15 is set to “0” within a range in which the tensile forces F1 and F2 can be changed.
- the position where the displacement amount and inclination of the ram tip are minimized is derived, and the tension portion 22a of the second tension bar 22 is provided at the derived position. The same applies to a multi-stage tension bar larger than two stages.
- the vertical position of the two-stage tension bar 20 arranged on the ram 15 is arranged as follows.
- the two-stage tension bar 20 applies a bending moment to the ram 15 and corrects the deflection, similarly to the conventional one-stage tension bar.
- the two-stage tension bar 20 in the present embodiment is disposed at a position close to the upper surface of the ram 15.
- a two-stage bar (hereinafter referred to as compression) that is arranged below the ram center line and generates a pushing force.
- compression a two-stage bar
- the displacement and inclination of the ram tip are corrected by pushing up the ram by the bending moment generated by the first and second pushing force of the first and second compression bars. It is also possible to do.
- compression force acts on the compression bar, it is necessary to prevent the compression bar itself from being cramped. For this reason, the compression bar needs to be thickened. Therefore, when it is desired to make the ram compact, it is desirable to use a two-stage tension bar arranged above the ram.
- a plurality of two-stage tension bars arranged above the center line of the ram may be provided, or the lengths are different from the two-stage tension bars arranged coaxially.
- Two independent tension bars may be arranged above the center line of the ram.
- a plurality of two-stage compression bars arranged below the center line of the ram may be provided.
- two independent compression bars having different lengths may be provided.
- the compression bar may be arranged below the center line of the ram.
- an attachment to be attached to the ram 15 is selected, and a correction formula corresponding to this attachment is also selected (step S1).
- the position information (Z, W, Y position) of each axis in the ram 15 is acquired (step S2).
- a correction force F ij that minimizes the displacement amount and inclination of the tip of the ram 15 is calculated. 2 Convert to pressures P1 and P2 to the tension bar 2.
- the correction force F ij is defined as follows for each tension bar and each attachment.
- the following function f is determined by measuring with an actual machine.
- the correction force F ij is the tensile force F1, F2, and the oil chamber 24 necessary for applying such correction force F ij to the receiving portions 15a, 15b. , 25 may be converted as pressures P1 and P2.
- the function f has a series of factors (1) to (4) below, and therefore the relational expression cannot be generally obtained, and is determined by measuring the actual measurement value with an actual machine. Therefore, when obtaining the pressures P1 and P2, the pressures P1 and P2 are obtained after grasping the following conditions (1) to (4).
- the pressures P1 and P2 that minimize the inclination of the tip of the ram 15 have a bending moment as shown in FIG. 4B together with the selected correction formula and the acquired position information (Z, W, Y position) and the like. Calculate and find out.
- the ranges of the pressures P1 and P2 are obtained with respect to the range of the allowable inclination, and the ranges of the pressures P1 and P2 are separately obtained with respect to the range of the allowable displacement amount.
- the first tension bar 21 and the second tension bar are supplied so as to instruct the obtained pressures P1 and P2 from the control device provided in the horizontal machine tool 10 (step S4) and supply the hydraulic pressures of the pressures P1 and P2.
- Each proportional electromagnetic control valve 22 is driven (step S5).
- the deflection of the ram 15 is corrected by the hydraulic pressures P1 and P2 supplied to the first tension bar 21 and the second tension bar 22, respectively, and the displacement amount and inclination of the ram 15 tip are controlled to be minimized (see FIG. Step S6).
- step S7 the pressures P1 and P2 are calculated and controlled in real time by feeding back the position of the ram 15 until the machining is completed. Thus, the pressures P1 and P2 are changed (step S7).
- the amount of ram deflection obtained is shown in the graph of FIG.
- the case of a single-stage tension bar is also shown.
- the amount of displacement due to deflection can be corrected at the tip of the ram, and at the same time, the inclination can also be corrected. Yes.
- the straightness and squareness of the ram can be improved, and variations in the ram tip displacement and inclination occurring for each attachment with different mass can be suppressed, and high machining accuracy can be realized.
- the present invention is suitable for horizontal machine tools such as horizontal lathes.
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Abstract
Description
水平方向に移動可能にサドルに支持された工作機械のラムのたわみを補正するラムたわみ補正装置において、
前記水平方向に沿って、前記ラムの中心線より上方に設けられ、前記ラムの先端を内側に引っ張り上げる第1引張力を付与する第1テンションバーと、
前記水平方向に沿って、前記ラムの中心線より上方に設けられ、前記第1テンションバーの先端より内側の位置を内側に引っ張る第2引張力を付与する第2テンションバーとを有することを特徴とする。
上記第1の発明に記載のラムたわみ補正装置において、
前記第1テンションバー及び前記第2テンションバーを、前記ラムの曲げ中心より上方に離れた位置に配置したことを特徴とする。
上記第1又は第2の発明に記載のラムたわみ補正装置において、
前記第1テンションバーと前記第2テンションバーとを同軸に配置したことを特徴とする。
水平方向に移動可能にサドルに支持された工作機械のラムのたわみを補正するラムたわみ補正装置において、
前記水平方向に沿って、前記ラムの中心線より下方に設けられ、前記ラムの先端を外側に押し上げる第1押出力を付与する第1コンプレッションバーと、
前記水平方向に沿って、前記ラムの中心線より下方に設けられ、前記第1テンションバーの先端より内側の位置を外側に押し上げる第2押出力を付与する第2コンプレッションバーとを有することを特徴とする。
上記第4の発明に記載のラムたわみ補正装置において、
前記第1コンプレッションバー及び前記第2コンプレッションバーを、前記ラムの曲げ中心より下方に離れた位置に配置したことを特徴とする。
上記第4又は第5の発明に記載のラムたわみ補正装置において、
前記第1コンプレッションバーと前記第2コンプレッションバーとを同軸に配置したことを特徴とする。
上記第1から第3の発明のいずれか1つに記載のラムたわみ補正装置を用いたラムたわみ補正方法であって、
前記ラム先端の変位量が0となり、かつ、前記ラムの自重により発生する前記ラムの曲げモーメントと前記第1引張力及び前記第2引張力による曲げモーメントとの和が前記ラム先端で0となる前記第1引張力及び前記第2引張力を求め、
求めた前記第1引張力及び前記第2引張力を前記第1テンションバー及び前記第2テンションバーにより付与することを特徴とする。
上記第4から第6の発明のいずれか1つに記載のラムたわみ補正装置を用いたラムたわみ補正方法であって、
前記ラム先端の変位量が0となり、かつ、前記ラムの自重により発生する前記ラムの曲げモーメントと前記第1押出力及び前記第2押出力による曲げモーメントとの和が前記ラム先端で0となる前記第1押出力及び前記第2押出力を求め、
求めた前記第1押出力及び前記第2押出力を前記第1コンプレッションバー及び前記第2コンプレッションバーにより付与することを特徴とする。
上記第7又は第8の発明に記載のラムたわみ補正方法において、
前記ラム先端にアタッチメントを装着した場合には、前記ラムの自重に前記アタッチメントの重量を加えて、前記ラムの曲げモーメントを求めることを特徴とする。
15 ラム
20 2段テンションバー
21 第1テンションバー
22 第2テンションバー
図1は、本実施例のラムたわみ補正装置を有する横型工作機械を示す概略図であり、図2は、そのラムたわみ補正装置を説明する図、図3は、そのラムたわみ補正装置の断面図である。
M=a×F1
Fij=fij(y,z,w)
i:テンションバー番号(本実施例の場合、i=1、2)
j:アタッチメント番号
又、関数fは、下記(1)~(4)の一連の要因があるため、一概に関係式を求めることができず、実際の機械で実測値を計測することで決定している。従って、圧力P1、P2を求める際には、下記(1)~(4)の状態を把握した上で、圧力P1、P2を求めている。
(1)Z、W、Y軸移動による自重によるたわみ
(2)アタッチメントの有無及びアタッチメントの種類によるラムのたわみ
(3)上記(1)及び(2)の複合的な要因による工作機械全体の倒れ
(4)温度変化による工作機械の変形
Claims (9)
- 水平方向に移動可能にサドルに支持された工作機械のラムのたわみを補正するラムたわみ補正装置において、
前記水平方向に沿って、前記ラムの中心線より上方に設けられ、前記ラムの先端を内側に引っ張り上げる第1引張力を付与する第1テンションバーと、
前記水平方向に沿って、前記ラムの中心線より上方に設けられ、前記第1テンションバーの先端より内側の位置を内側に引っ張る第2引張力を付与する第2テンションバーとを有することを特徴とするラムたわみ補正装置。 - 請求項1に記載のラムたわみ補正装置において、
前記第1テンションバー及び前記第2テンションバーを、前記ラムの曲げ中心より上方に離れた位置に配置したことを特徴とするラムたわみ補正装置。 - 請求項1又は請求項2に記載のラムたわみ補正装置において、
前記第1テンションバーと前記第2テンションバーとを同軸に配置したことを特徴とするラムたわみ補正装置。 - 水平方向に移動可能にサドルに支持された工作機械のラムのたわみを補正するラムたわみ補正装置において、
前記水平方向に沿って、前記ラムの中心線より下方に設けられ、前記ラムの先端を外側に押し上げる第1押出力を付与する第1コンプレッションバーと、
前記水平方向に沿って、前記ラムの中心線より下方に設けられ、前記第1テンションバーの先端より内側の位置を外側に押し上げる第2押出力を付与する第2コンプレッションバーとを有することを特徴とするラムたわみ補正装置。 - 請求項4に記載のラムたわみ補正装置において、
前記第1コンプレッションバー及び前記第2コンプレッションバーを、前記ラムの曲げ中心より下方に離れた位置に配置したことを特徴とするラムたわみ補正装置。 - 請求項4又は請求項5に記載のラムたわみ補正装置において、
前記第1コンプレッションバーと前記第2コンプレッションバーとを同軸に配置したことを特徴とするラムたわみ補正装置。 - 請求項1から請求項3のいずれか1つに記載のラムたわみ補正装置を用いたラムたわみ補正方法であって、
前記ラム先端の変位量が0となり、かつ、前記ラムの自重により発生する前記ラムの曲げモーメントと前記第1引張力及び前記第2引張力による曲げモーメントとの和が前記ラム先端で0となる前記第1引張力及び前記第2引張力を求め、
求めた前記第1引張力及び前記第2引張力を前記第1テンションバー及び前記第2テンションバーにより付与することを特徴とするラムたわみ補正方法。 - 請求項4から請求項6のいずれか1つに記載のラムたわみ補正装置を用いたラムたわみ補正方法であって、
前記ラム先端の変位量が0となり、かつ、前記ラムの自重により発生する前記ラムの曲げモーメントと前記第1押出力及び前記第2押出力による曲げモーメントとの和が前記ラム先端で0となる前記第1押出力及び前記第2押出力を求め、
求めた前記第1押出力及び前記第2押出力を前記第1コンプレッションバー及び前記第2コンプレッションバーにより付与することを特徴とするラムたわみ補正方法。 - 請求項7又は請求項8に記載のラムたわみ補正方法において、
前記ラム先端にアタッチメントを装着した場合には、前記ラムの自重に前記アタッチメントの重量を加えて、前記ラムの曲げモーメントを求めることを特徴とするラムたわみ補正方法。
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EP10828157.7A EP2497598A4 (en) | 2009-11-06 | 2010-09-24 | DEVICE FOR CORRECTION OF AERIAL DEVIATION AND METHOD OF CORRECTION |
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CN104325362A (zh) * | 2013-10-30 | 2015-02-04 | 柳州正菱重型数控机床有限公司 | 滑枕自重变形补偿装置 |
KR101803684B1 (ko) | 2017-06-05 | 2017-11-30 | 황재용 | 보링머신의 램 처짐 및 휨 보상 장치 |
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JPS51103386A (ja) * | 1975-02-03 | 1976-09-11 | Hure Sa | |
JPS6274550A (ja) * | 1985-09-27 | 1987-04-06 | Toshiba Mach Co Ltd | 主軸のヒ−リング装置 |
JPH0364264B2 (ja) | 1983-06-29 | 1991-10-04 | Toshiba Machine Co Ltd |
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JP5039597B2 (ja) | 2008-02-13 | 2012-10-03 | 三菱重工業株式会社 | 工作機械 |
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JPS51103386A (ja) * | 1975-02-03 | 1976-09-11 | Hure Sa | |
JPH0364264B2 (ja) | 1983-06-29 | 1991-10-04 | Toshiba Machine Co Ltd | |
JPS6274550A (ja) * | 1985-09-27 | 1987-04-06 | Toshiba Mach Co Ltd | 主軸のヒ−リング装置 |
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KR20120066664A (ko) | 2012-06-22 |
EP2497598A4 (en) | 2013-09-18 |
JP5495721B2 (ja) | 2014-05-21 |
CN102596491A (zh) | 2012-07-18 |
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