JP2016203312A - Press-in device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive press-in device that is able to determine whether pressing load and a press-in degree when a shaft member and a cylindrical member are pressed in are satisfactory or not.SOLUTION: A press-in device 10 comprises: a placing table 19 on which a cylindrical member 2 is placed; a pressing table 15 pressing a shaft member 1 against the cylindrical member 2; a column 11 that guides the pressing table 15 such that the pressing table is movable in the direction in which it is pressed, and that connects the placing table 19; and a lever 12 that is rotatably supported by the column 11 and operated by an operator. The press-in device further comprises: a position detection device 13 that detects the position of the pressing table 15; a load detection device 14 that detects pressing load in a pressing direction; a control device 40 having a position load storage device that stores a position signal from the position detection device 13 and a pressing load signal from the load detection device 14 in association with each other, and also having a maximum pressing load detection device that detects maximum pressing load from the pressing load of the position load storage device; and a display device 60 that displays maximum pressing load.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a press-fitting device.

  Conventionally, as a press-fitting device for press-fitting a shaft member into a mating part such as a cylindrical member, a simple hand press device having a short cycle time has been used. The hand press device has a mounting table on which a cylindrical member or a shaft member is mounted, a pressing table that presses the shaft member or the cylindrical member against the cylindrical member or the shaft member, and a guide that is movable in the direction in which the pressing table is pressed. A column that connects the mounting table, a lever that is rotatably supported by the column and that is operated by an operator, and a moving device that moves the rotation of the lever in a direction in which the pressing table is pressed. Press the shaft member into the cylindrical member, measure the change in pressing load near the end of the pressing with a load measuring device, and compare the measured maximum pressing load with the design load in the drawing to make a pass / fail judgment It has become. On the other hand, Patent Document 1 uses an automatic press device to have a load measuring device provided in one of the fixing jigs and an automatic moving device that moves both the fixing jigs close to each other. A function that measures the pressing load at all positions in the press-fitting direction, reads the maximum pressing load at a predetermined position at the time of press-fitting, and determines whether the pressing load is good or bad compared with the design load and pressing load in the drawing have.

JP-A-61-203237

  In the conventional hand press device, the press-fitting speed changes due to the manual movement device by the operator, so it may be difficult to determine the exact press-fitting position, and it becomes difficult to measure the maximum pressing load at the end of press-fitting. When the work is stopped halfway, it may be difficult to determine whether the set press-fit amount is good or not only by measuring the maximum pressing load. On the other hand, in the press-fitting of the automatic press device, the above-mentioned problem is difficult because the press load at all the press-fitting positions can be measured at a constant press-fitting speed, but the device becomes expensive and the cycle time in the production line becomes long. is there.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to shorten the cycle time of the press-fitting work production line by the operator, and to press-fit the shaft member and the cylindrical member. An inexpensive press-fitting device that can determine whether the maximum pressing load and the press-fitting amount are good or bad is provided.

  In order to solve the above-mentioned problem, the press-fitting device according to claim 1 includes a mounting table on which a cylindrical member or a shaft member is mounted, and a press that presses the shaft member or the cylindrical member against the cylindrical member or the shaft member. A table, a column that guides the pressing table to be movable in the pressing direction and connects the mounting table, a lever that is rotatably supported by the column and is operated by an operator, and rotation of the lever A press-fitting device provided with a conversion mechanism for converting the movement of the pressing table in the pressing direction and decelerating and increasing the pressure, a position detecting device for detecting the position of the pressing table, and a pressing load in the pressing direction , A position load storage device that stores a position signal from the position detection device and a pressure load signal from the load detection device in association with each other, and the position load And the maximum pressure load detection device for detecting the maximum pressure load from the pressing load of 憶 device, and summarized in that comprising a display device for displaying the maximum pressure load of the maximum pressure load sensing device.

  According to the above invention, the position detecting device for detecting the position of the pressing table is provided, and the position signal of the pressing table and the pressing load signal are associated and stored at the time of press-fitting, and the maximum pressing load is calculated from the pressing load signal at the end of press-fitting. Since it is detected and displayed on the display device, it is possible to determine the quality of the maximum pressing load when the shaft member and the cylindrical member are press-fitted with an inexpensive device.

  Furthermore, the invention described in claim 2 is a maximum position detection device that detects a maximum position on the mounting table side from the position of the position load storage device, and a predetermined amount return from the maximum position to the opposite side of the mounting table. A return position calculation device that calculates a return position; and a return position load detection device that detects the pressing load corresponding to the return position from the position of the position load detection storage device and the pressing load; The gist is that the pressing load detected by the load detecting device is displayed on the display device.

  Therefore, because the maximum position of the pressing table at the end of press-fitting is detected, a return position returned by a predetermined amount from the maximum position is set, and the pressing load corresponding to the returning position is displayed as the determination load of the pressing load. Compared with the design load specified in the drawing, it is possible to determine whether the pressing load at the time of press-fitting the shaft member and the cylindrical member is good or bad.

  The invention according to claim 3 is a theoretical movement amount storage device that stores a theoretical movement amount of the pressing table at the time of pressing, and a start of calculating a press-fitting start position obtained by subtracting the theoretical movement amount from the maximum position. A position calculation device; and a start position load detection device that detects the pressing load corresponding to the press-fitting start position from the position and the pressing load of the position load detection storage device, and is detected by the start position load detection device. The gist of the invention is that the pressing load is displayed on the display device.

  Detect the maximum position of the pressing platform at the time of press-fitting, set the return position returned by a predetermined amount from the maximum position, display the pressing load corresponding to the return position, and further subtract the theoretical movement amount from the maximum position Since the press-fitting start position is set and the pressing load corresponding to the press-fitting start position is displayed, it is determined whether the pressing load and the press-fitting amount at the time of press-fitting of the shaft member and the cylindrical member are compared with the design load specified in the drawing. Can do.

  Furthermore, the invention according to claim 4 is a minimum position detecting device that detects a minimum position opposite to the mounting table from the position of the position load storage device, and an actual movement obtained by subtracting the minimum position from the maximum position. An actual movement amount calculating device for calculating an amount; a theoretical movement amount storage device for storing a theoretical movement amount of the pressing table at the time of pressing; and a remaining movement amount obtained by subtracting the actual movement amount from the theoretical movement amount. The remaining movement amount calculation device is provided, and the remaining movement amount is displayed on the display device.

  Since the theoretical movement amount of the pressing base at the time of pressing and the remaining movement amount obtained by subtracting the actual movement amount from the theoretical movement amount are calculated and displayed, the quality of the press-fitting amount can be determined more accurately based on the remaining movement amount.

  The invention according to claim 5 is characterized in that the pressing table is guided so as to be movable in the pressing direction, and is movable in the pressing direction on the mounting table side with respect to the pressing body. A pressure head to be guided; and a regulating member that regulates movement of the pressure head toward the mounting table with respect to the pressure body. The position detection device detects the position of the pressure head and detects the load. The gist of the apparatus is to detect a pressing load acting on the pressing head.

  Since the restriction member restricts the movement of the pressing head toward the mounting table with respect to the pressing body, the pressing load at the time of press-fitting the shaft member and the cylindrical member can be accurately measured, and the press-fitting device can be used safely.

  According to the configuration described above, it is possible to provide a press-fitting device that can shorten the cycle time of the production line and can determine whether the pressing load and the press-fitting amount are good or bad when the shaft member and the cylindrical member are press-fitted.

1 is an overall configuration diagram of a press-fitting device according to a first embodiment of the present invention. The principal part enlarged view of FIG. 1 of the approaching state at the time of the press injection concerning 1st embodiment of this invention. The principal part enlarged view of FIG. 1 at the time of the press injection completion concerning 1st embodiment of this invention. The measurement figure of the position of the press stand at the time of press-fitting progress concerning 1st embodiment of this invention, and a press load. The block diagram which shows the structure of the measurement control process at the time of the press injection concerning 1st embodiment of this invention. The block diagram which shows the structure of the measurement control process at the time of the press injection concerning 2nd embodiment of this invention.

  A press-fitting device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of a press-fitting device, and FIG. 2 is an enlarged view of a main part of FIG. 1 in an approaching state during press-fitting according to an embodiment of the present invention.

  As shown in FIG. 1, the press-fitting device 10 includes a table 20, a mounting table 19 that holds the cylindrical member 2 that is placed on the table 20 and is press-fitted, and a cylindrical shape that is placed at a position facing the cylindrical member 2 and press-fitted. The shaft member 1, a pressing table 21 that presses in the press-fitting direction, a column 11 that guides the pressing table 21 so as to be movable and connects the mounting table 19, and is rotatably supported by the column 11 by an operator. The lever 12 to be operated is provided, and a conversion mechanism 17 that converts the rotation of the lever 12 into the movement of the pressing base 21 in the pressing direction and decelerates and increases the force. Furthermore, a position detection device 13 for detecting the position of the pressing table 21, a load detection device 14 for detecting a pressing load in the pressing direction, a position signal from the position detection device 13, and a pressure load signal from the load detection device 14 are provided. The control apparatus 40 which memorize | stores in association and the display apparatus 60 which displays the signal of the control apparatus 40 are provided.

  The table 20 is made of iron, is flat, and has rigidity.

  As shown in FIG. 2, the mounting table 19 is fixed to the table 20 via bolts 24. The mounting table 19 is formed with a cup-shaped recess 19c that opens upward, and a cylindrical surface around the recess 19c on the upper surface. A receiving hole 19a that is positioned coaxially with the shaft member 1 that press-fits the outer periphery of the member 2 and a receiving surface 19b that is an end surface of the cylindrical member 2 are formed.

  As shown in FIG. 2, the shaft member 1 is a cylindrical shaft, and is smaller than the step portion 1b, an outer peripheral portion 1a press-fitted to the outer peripheral surface of the column, a step portion 1b formed on the outer side in the circumferential direction at the center portion. It has a diameter outer peripheral portion 1c. In this embodiment, the cylindrical member 2 is a rolling bearing 2 having an inner ring 2a, an outer ring 2b, and rolling elements (balls) 2c, and the outer peripheral portion 1a of the shaft member 1 is press-fitted to the inner periphery of the inner ring 2a.

  The pressing table 21 includes a pressing body 21a that is guided so as to be movable in the pressing direction, a pressing head 15 that is guided so as to be movable in the pressing direction on the mounting table 19 side with respect to the pressing body 21a, a pressing body 21a, and A compression spring 22 inserted between the pressing heads 15, a fixing member 23 for fixing the compression spring 22 to the pressing head 15, and a regulating member 30 for regulating the movement of the pressing head 15 toward the mounting table 19 to the pressing main body 21a. And a projecting portion 21b that engages.

  The column 11 includes a columnar support portion 11a fixed and integrated with a table 20 that connects the mounting table 19, and a support portion 11b that guides the column 21 from the columnar support portion 11a so as to move in the direction of pressing the pressing table 21 in parallel with the table 20. It consists of

  The lever 12 is connected to the column 11 via the pressing body 21a of the pressing base 21 and the conversion mechanism 17, and is operated by the operator during press-fitting.

  The conversion mechanism 17 is provided with a rack and pinion structure between the pressing body 21 a and the lever 12, and converts the rotation of the lever 12 into a movement in the pressing direction of the pressing table 21 and decelerates and increases the force.

  The position detection device 13 is fixed to the support portion 11b of the column 11, and follows the direction in which the sensor 13a contacts and presses the upper surface of the pressing head 15 of the pressing table 21. The position of the pressing table 21 in the pressing direction is detected and a signal is sent to the control device 40.

  The load detection device 14 is installed between a fixing member 23 that fixes the pressing main body 21a and the compression spring 22, and detects the pressing load P in the pressing direction. Then, a pressing load P in the pressing direction is detected and a signal is sent to the control device 40.

  The structure of the control apparatus 40 is demonstrated using FIG. 4 and FIG. FIG. 4 shows the position C of the pressing table 15 and the pressing load P at the position C stored and stored in the position load storage device 41 at the time of press-fitting according to the first embodiment of the present invention on the horizontal axis and the position C on the vertical axis. It is the figure which showed the pressing load P. FIG. FIG. 5 is a block diagram showing the configuration of the measurement control process at the time of press-fitting according to the first embodiment of the present invention, and FIG. 40 configurations are shown.

  As shown in FIG. 4, the graph indicated by the straight line A shows a press-fitting start position C2 (start position pressing load P2), a press-fitting end position C1 (end position pressing load P1), and a maximum press-fitting position C0 (maximum) in a normal press-fitting process. A line connecting the pressing loads P0) is shown. The parallel part where the pressing load P does not change from the position C3 to the press-fitting end position C1 is a part where the press-fitting part is completed and the press-fitting part moves, and the maximum press-fitting position C0 is completed after the press-fitting and the movement of the pressing base 15 is restricted. The position C is a position where the pressing load P increases rapidly without changing. The movement amount M from the press-fitting start position C2 to the maximum press-fitting position C0 indicates the actual movement amount, the movement amount K from the press-fitting start position C2 to the press-fitting completion position indicates the theoretical movement amount on the design drawing, and I is The amount of movement of the return position C1 returned by a predetermined amount from the maximum position C0 is shown. A straight line B indicated by a broken line is a graph when the press-fitting is stopped halfway and the press-fitting is insufficient. Therefore, the start position pressing load P3 at the press-fitting start position C2 separated by the theoretical movement amount K is displayed smaller than the pressing load P2 at the time of normal press-fitting.

  As shown in FIG. 5, the control device 40 detects the position signal from the position detection device 13 that detects the position C of the pressing table 15 and the pressure load signal from the load detection device 14 that detects the pressure load P in the pressing direction. Are stored in association with each other, and a maximum pressing load detecting device 42 for detecting a maximum pressing load P0 from the pressing load of the position load storing device 41. And it has the function to send a signal to the display apparatus 60 which displays the maximum pressing load P0 detected by the maximum pressing load detection apparatus 42.

  Further, the control device 40 has a maximum position detection device 43 that detects the maximum position C0 on the mounting table 19 side from the position of the position load storage device 41, and a return position that returns a predetermined amount from the maximum position C0 to the opposite side of the mounting table 19. A return position calculating device 44 for calculating C1 and a return position load detecting device 45 for detecting a return position pressing load P1 corresponding to the returning position C1 from the position C and the pressing load P of the position load storage device 41; The return position pressing load P <b> 1 detected by the load detection device 45 has a function of sending a signal to the display device 60.

  Further, the control device 40 stores a theoretical movement amount storage device 46 that stores the theoretical movement amount K of the pressing base 21 at the time of pressing, and a start position calculation that calculates a press-fitting start position C2 obtained by subtracting the theoretical movement amount K from the maximum position C0. A device 47 and a start position load detecting device 48 for detecting a start position pressing load P2 corresponding to the press-fitting start position C2 from the position and pressing load of the position load storage device 41, and detected by the start position load detecting device 48. The start position pressing load P <b> 2 has a function of sending a signal to the display device 60.

  Based on the above-described configuration, the press-fitting operation of the assembly product including the shaft member 1 and the rolling bearing 2 will be described.

  As shown in FIG. 2, the rolling bearing 2 is mounted on the receiving hole 19 a surface of the mounting table 19 and the receiving surface 19 b of the end surface of the cylindrical member 2. The shaft member 1 is set on the inner ring 2 a of the rolling bearing 2.

  Subsequently, the press-fitting operation will be described. The lever 12 is operated manually by the operator so that the pressing surface 15d of the pressing head 15 contacts the end surface 1d of the shaft member 1. Further, by operating the lever 12, the shaft member 1 is press-fitted into the inner ring 2a of the bearing 2 and brought into contact with the end surface 1e of the shaft member 1 and the end surface of the inner ring 2a of the rolling bearing 2 (FIG. 3).

  Further, the lever 12 is operated to bring the pressing body 21 and the pressing head 15 closer to the mounting table 19 side, that is, lower. When the pressing body 21a is further lowered by the lever 12, the protrusion 21b provided at the upper end of the pressing body 21a comes into contact with the regulating member 30 to prevent the lowering, and the compression spring 22 is compressed. As the pressing body 21a is lowered by the lever 12, the spring pressure of the compression spring 22 rises, and the load applied to the shaft member 1 and the rolling bearing 2 is stabilized by suppressing it to a predetermined spring load range, thereby stabilizing the press-fitting operation. have. That is, the press-fit load P is detected in a state where the movement of the press head 15 in the press-fitting direction is stopped, and it is easy to make a determination at the end of press-fitting.

  The lever 12 is operated in the opposite direction to the previous one, and is separated, that is, raised with respect to the movement of the pressing table 21 in the press-fitting direction. Thereafter, the press-fitting completion product in which the shaft member 1 is press-fitted into the inner ring 2a of the bearing 2 is removed, and the press-fitting operation is completed.

  At the same time, the signal of the maximum pressing load P0 detected by the maximum pressing load detection device 42 of the control device 40, the signal of the return position pressing load P1 detected by the return position load detection device 45, and the start position load detection device 48. The display device 60 detects and displays the maximum pressing load P0, the return position pressing load P1, and the starting position pressing load P2 based on the signal of the starting position pressing load P2 detected by the above.

  According to the above configuration, the position detection device 13 for detecting the position of the pressing table 21 is provided, and the position signal C of the pressing table 21 and the pressing load signal P are associated and stored at the time of press-fitting, and the pressing load signal P at the end of press-fitting. Since the maximum pressing load P0 is detected and displayed on the display device 60, the quality of the maximum pressing load P0 when the shaft member 1 is press-fitted into the bearing 2 is compared with the design load specified in the drawing. Can be distinguished.

  Further, because the maximum position C0 of the pressing base 21 at the time of press-fitting is detected, a return position C1 returned by a predetermined amount from the maximum position C0 is set, and the return position pressing load P1 corresponding to the return position C1 is displayed. By comparing with the design load specified in the drawing, it is possible to determine whether the return position pressing load P1 when the shaft member 1 is press-fitted into the rolling bearing 2 is good or bad.

  Then, the maximum position C0 of the pressing base 21 at the time of press-fitting is detected, a return position C1 returned from the maximum position C0 by a predetermined amount I is set, and a return position pressing load P1 corresponding to the return position is displayed. Further, since the press-fitting start position C2 is set by subtracting the theoretical movement amount K from the maximum position C0 and the start position pressing load P2 corresponding to the press-fitting start position C2 is displayed, it is compared with the design load specified in the drawing. Thus, whether the shaft member 1 is press-fitted with the bearing 2 at the start position pressing load P2 and the press-fit amount K can be determined.

  Next, a press-fitting device according to a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the theoretical movement amount K is calculated from the return position C1 to obtain the press-fitting start position C2. In the second embodiment, the difference between the minimum position C2 and the maximum position C1 detected in the actual press-fitting process. This is a method for obtaining the press-fitting amount by calculating the remaining moving amount of the difference between the value and the theoretical moving amount. Since the press-fitting device of the second embodiment differs only in the configuration of the control device 40, the configuration of the control device 40 will be described, and the description of the same configuration of the first embodiment will be omitted.

  The control device 40 according to the second embodiment calculates a minimum position detection device 49 that detects a minimum position on the side opposite to the mounting table 19 from the position of the position load storage device 41, and an actual movement amount obtained by subtracting the minimum position from the maximum position. The actual movement amount calculating device 50, the theoretical movement amount storage device 51 for storing the theoretical movement amount of the pressing base 21 at the time of pressing, and the remaining movement amount calculation for calculating the remaining movement amount obtained by subtracting the actual movement amount from the theoretical movement amount. And a function of sending a signal of the remaining movement amount to the display device 60.

  According to the above configuration, the position detection device 13 for detecting the position of the pressing table 21 is provided, and the position signal of the pressing table 21 and the pressing load signal are stored in association with each other at the time of press-fitting, and the maximum pressing load is simultaneously calculated from the pressing load signal. Since it is detected and displayed on the display device 60, the quality of the maximum pressing load when the shaft member 1 and the bearing 2 are press-fitted can be determined by comparing with the design load specified in the drawing.

  In addition, the maximum position of the pressing base 21 at the time of press-fitting is detected, a return position returned by a predetermined amount from the maximum position is set, and the pressing load corresponding to the return position is displayed, so the design specified in the drawing By comparing with the load, it is possible to determine whether the pressing load when the shaft member 1 is press-fitted into the bearing 2 is good or bad.

  Further, since the theoretical movement amount K of the pressing table at the time of pressing and the remaining movement amount I obtained by subtracting the actual movement amount M from the theoretical movement amount K are calculated and displayed, the accuracy of the press-fitting amount is more accurately determined from the remaining movement amount I. Can be determined.

  The present invention is not limited to these embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.

  In the first embodiment and the second embodiment described above, the load detection device 14 is installed on the pressing table 21 that moves in the press-fitting direction. However, the load detection device 14 may be installed on the mounting table 19, and the position detection device 13 may be a contact linear gauge. Although a laser non-contact sensor may be used.

  In the display devices of the first embodiment and the second embodiment, the display device 60 can detect the maximum pressing load P0, the pressing load P1 at the return position, and the pressing load P2 at the start position. However, compared with each pressing load set in the drawing, an OK and NG judgment result lamp display device may be provided.

1: shaft member, 2: rolling bearing (cylindrical member), 10: press-fitting device, 11: column, 12: lever, 13: position detecting device (linear gauge), 14: load detecting device (load cell), 15: pressing head , 17, conversion mechanism, 19: mounting table, 20: table, 21: pressing table, 22: compression spring, 30: regulating member, 40: control device, 41: position load storage device, 42: maximum pressing load detection device, 43: maximum position detection device, 44: return position calculation device, 45: return position load detection device, 46: theoretical movement amount storage device, 47: start position calculation device, 48: start position load detection device, 60: display device

Claims (5)

A mounting table for mounting the cylindrical member or the shaft member, a pressing table for pressing the shaft member or the cylindrical member against the cylindrical member or the shaft member, and a guide for movably guiding the pressing table in the pressing direction. The column connecting the mounting table, the lever rotatably supported by the column and operated by an operator, and converting the rotation of the lever into the movement of the pressing table in the pressing direction and increasing the deceleration. A press-fitting device including a conversion mechanism, a position detection device that detects the position of the pressing table, a load detection device that detects a pressing load in the pressing direction, a position signal from the position detection device, and the A position load storage device that associates and stores a pressing load signal from the load detection device, and a maximum pressing load that detects a maximum pressing load from the pressing load of the position load storage device; Press-fitting apparatus for a load sensing device, characterized in that a display device for displaying the maximum pressure load of the maximum pressure load sensing device. A maximum position detecting device for detecting the maximum position on the mounting table side from the position of the position load storage device; and a return position calculating device for calculating a return position returned from the maximum position to the opposite side of the mounting table by a predetermined amount; A return position load detection device that detects the pressure load corresponding to the return position from the position of the position load detection storage device and the pressure load, and the pressure load detected by the return position load detection device. 2. The press-fitting device according to claim 1, wherein display is performed by the display device. Corresponds to the theoretical movement amount storage device that stores the theoretical movement amount of the pressing table at the time of the pressing, the start position calculation device that calculates the press-fitting start position obtained by subtracting the theoretical movement amount from the maximum position, and the press-fitting start position A starting position load detecting device that detects the pressing load from the position of the position load detection storage device and the pressing load, and displays the pressing load detected by the starting position load detecting device on the display device. The press-fitting device according to claim 2, which is configured as described above. A minimum position detection device for detecting a minimum position on the opposite side of the mounting table from the position of the position load storage device; an actual movement amount calculation device for calculating an actual movement amount by subtracting the minimum position from the maximum position; A theoretical movement amount storage device that stores a theoretical movement amount of the pressing table at the time of pressing, and a remaining movement amount calculation device that calculates a remaining movement amount obtained by subtracting the actual movement amount from the theoretical movement amount. The press-fitting device according to claim 2, wherein a movement amount is displayed on the display device. The pressing table is guided by a pressing body guided to be movable in the pressing direction, a pressing head guided to be movable in the pressing direction on the mounting table side with respect to the pressing body, and the pressing body. And a regulating member that regulates the movement of the pressing head toward the mounting table, the position detecting device detects the position of the pressing head, and the load detecting device is a pressing load acting on the pressing head. The press-fitting device according to any one of claims 1 to 4, wherein the pressure is detected.

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