JP2007210040A - Bush press-fit device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bush press-fit device, restraining noise in press-fitting a bush, and press-fitting many kinds of bushes in multi-direction. <P>SOLUTION: Press-fit heads 6, 7 (dedicated parts) are provided separately from a press-fit unit 9 (a general purpose part). By this arrangement, the press-fit heads 6, 7 are selected according to a bush 5 to be press-fitted to cope with press-fit of many kinds of bushes 5 in multi-direction. In press-fitting, a mount rubber (an elastic member) interposed between an attachment holder and a slide base is elastically deformed to rock the bush 5 following the parts 3, 4 to be press-fitted, so that the bush is voluntarily centered to the parts 3, 4 to be press-fitted. Thus, the bush 5 can be smoothly press-fitted to the parts 3, 4 to be press-fitted without hollowing the bush 5, so that noise in press-fitting is restrained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a bush press-fitting device.

  When the bush is press-fitted into the suspension member of the vehicle body, for example, a bush press-fitting device described in Patent Document 1 is used. In this bush press-fitting device, the bush attached to the press-fitting head is positioned on the press-fitting axis, and in this state, the bush is applied to the press-fitted portion of the suspension member by applying press-fitting pressure to the bush by the pressure cylinder. Press fit. By the way, in this type of bush press-fitting device, the suspension member is positioned and fixed to the jig by a toggle clamp or the like, but due to the accuracy of drilling the press-fitted portion, the mounting error of the suspension member to the jig, etc. The positions of the press-fitting parts vary, and the press-fitting axis of the press-fitting head (the axis of the bush mounted on the press-fitting head) is inclined with respect to the axis of the press-fitting part. However, in the conventional bush press-fitting device, since the press-fitting head only moves in the XY direction during press-fitting, the above inclination cannot be absorbed by the operation of the press-fitting head. Therefore, in the conventional bush press-fitting device, the bush is squeezed at the press-fitted portion at the time of press-fitting, and a large noise (noise) is generated to deteriorate the working environment.

In addition, in the conventional bush press-fitting device, the bush set attachment is integrally formed with the press-fitting head, so that it corresponds to a work having a different press-fitting direction (for example, from the work in which the bush is press-fitted from the outside of the press-fitted part, When changing to a work piece into which the bush is press-fitted from the inside of the press-fitting part.) Since the press-fitting head cannot be rotated 180 ° on the XY plane, it is necessary to replace the press-fitting head according to the press-fitting direction. Therefore, it takes a lot of time and labor to change the setup, and an increase in equipment cost has been a problem.
JP 2005-138263 A

  Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bush press-fitting device in which noise during bush press-fitting is suppressed and bushes can be press-fitted in various types and directions.

  In order to achieve the above object, the invention according to claim 1 of the present invention includes a dedicated portion to which the bush is detachably mounted, and a pressure-inserted portion of the workpiece by pressurizing the bush mounted to the dedicated portion. A dedicated part that is separated from the general-purpose part, and the dedicated part is swung according to the inclination formed by the press-fit axis of the dedicated part and the axis of the press-fit part. Centering means for centering the press-fitted portion is provided.

  According to a second aspect of the present invention, in the bush press-fitting device according to the first aspect, the centering means is interposed between a bush mounting portion on which the bush is mounted and a support base that supports the bush mounting portion. The elastic member is characterized in that at the time of press-fitting, the dedicated member is centered with respect to the press-fit portion by elastically deforming the elastic member and causing the bush to follow the press-fit portion.

  According to a third aspect of the present invention, in the bush press-fitting device according to the first or second aspect, the elastic member is a mount rubber.

Therefore, in the invention according to the first aspect, by selecting the dedicated portion according to the bush to be press-fitted, it is possible to press-fit the bushes in many types and directions. Further, by swinging the dedicated portion during press-fitting, the dedicated portion is centered with respect to the press-fit portion.
In the invention according to claim 2, at the time of press-fitting, the elastic member is elastically deformed according to the inclination formed by the press-fitting axis of the dedicated part and the axis of the press-fitted part so that the bush follows the press-fitted part. The part is centered with respect to the press-fit part.
In the invention described in claim 3, the dedicated portion is swung by the elastic deformation of the mount rubber.

  It is possible to provide a bush press-fitting device capable of suppressing noise during bush press-fitting and capable of press-fitting bushes in various types and directions.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the bush press-fitting device 1 includes press-fitted parts 3 and 4 (hereinafter simply referred to as press-fitted parts 3 and 4) on both sides in the width direction (left and right direction in FIG. 1) of the suspension member 2 (workpiece). The press-fitting heads 6 and 7 (dedicated parts) are separated from the press-fitting units 8 and 9 (general-purpose parts) and are provided separately (separately). Thereby, in this bush press-fitting device 1, it becomes possible to select the press-fitting heads 6 and 7 corresponding to the bush 5 to be press-fitted, and it is possible to cope with press-fitting of the bush 5 in many types and directions. It has become. As shown in FIG. 4, the bush press-fitting device 1 is provided with a centering mechanism (centering means) in the press-fitting heads 6 and 7, and the mount rubber provided in the press-fitting heads 6 and 7 at the time of press-fitting. 10 (elastic member) is elastically deformed according to the inclination of the press-fitting axes C1 and C2 of the press-fitting heads 6 and 7 with respect to the axis of the press-fitting parts 3 and 4. As a result, the press-fitting heads 6 and 7 are swung along the press-fitted parts 3 and 4, and the press-fitting axes C1 and C2 of the press-fitting heads 6 and 7 and the axis of the press-fitted parts 3 and 4 are positioned on the same straight line. Thus, the press-fitting heads 6 and 7 are spontaneously centered with respect to the press-fitting parts 3 and 4.

  As shown in FIG. 2, in the bush press-fitting device 1, a workpiece attachment jig 12 is connected to the front surface (left surface in FIG. 2) of the housing 11, and the suspension member 2 is positioned and fixed to the workpiece attachment jig 12. As a result, each of the press-fit portions 3 and 4 shown in FIG. 1 is positioned at each press-fit position (see FIGS. 1 and 3) set in the bush press-fitting device 1. As shown in FIG. 1, the bush press-fitting device 1 is provided with a base 26 at a predetermined position of the housing 11, and each press-fitting on both sides in the left-right direction (left-right direction in FIG. 1) on the base 26. The press-fitting heads 6 and 7 corresponding to the parts 3 and 4 are arranged. Further, in the bush press-fitting device 1, press-fitting units 8 and 9 corresponding to the press-fitting heads 6 and 7 are disposed on both sides in the left and right direction (left and right direction in FIG. 1) of the upper portion of the housing 11. In the bush press-fitting device 1, the press-fitting heads 6 and 7 (dedicated part) and the press-fitting units 8 and 9 (general-purpose part) are formed symmetrically. Therefore, only the press-fitting head 6 disposed on the right side of the housing 11 (right side in FIG. 1) and the press-fitting unit 8 corresponding to the press-fitting head 6 will be described, and the press-fitting head 7 disposed on the left side of the housing 11 and the press-fitting head. Detailed description of the press-fitting unit 9 corresponding to 7 is omitted.

  As shown in FIGS. 3 and 4, the press-fitting head 6 includes a bush set attachment 13 (bush attachment portion) to which the bush 5 is attached, an attachment holder 14 that holds the bush set attachment 13, and the attachment holder. 14 includes a slide base 15 (support) that supports 14 via the mount rubber 10, and a linear motion guide 16 that guides the slide base 15 along the press-fit axis C1. The press-fit head 6 has a structure in which the bush 5 mounted on the bush set attachment 13 is centered with respect to the press-fit axis C1 and moves on the press-fit axis C1. Note that the position of the press-fit portion 3 positioned at the press-fit position varies depending on the processing accuracy of the hole of the press-fit portion 3 and the mounting error of the suspension member 2 to the work mounting jig 12. It is inclined with respect to the 6th press-fit axis C1.

  As shown in FIG. 1, in the press-fit unit 8, a pressurizing unit 17 having a C-shaped frame is suspended on the top of the housing 11 via a floating mechanism 18. Thereby, the pressurizing unit 17 can be moved by manual operation in the X direction (left and right direction in FIG. 1), Y direction (left and right direction in FIG. 2), Z direction (up and down direction in FIG. 1), and θ direction. It has a simple structure. The floating mechanism 18 includes a cross rail 19 (moving in the X direction and Y direction), a balance arm 20 (moving in the Z direction), and a bearing 21 (turning in the θ direction). The pressurizing unit 17 is provided with a fixing member 22 on one inner side (left side in FIG. 1) of the C-shaped frame, and is movable on the inner side of the other side (right side in FIG. 1). A member 23 is provided. In the pressurizing unit 17, the movable member 23 is moved toward the fixed member 22 while being guided by the guide shaft 25 by the thrust of the pressurizing cylinder 24 provided on the other outer side surface of the C-shaped frame. It has a structure.

  In the bush press-fitting device 1, as shown in FIG. 8, the bush 5 attached to the press-fitting head 6 (bush set attachment 13) is outside the press-fitted portion 3 positioned at the press-fitting position (in FIG. 8). The pressurizing part 17 is moved by manual operation, and the press-fitted part 3 to which the bush 5 is addressed is positioned between the fixed member 22 and the movable member 23 of the pressurizing part 17. Is done. Further, in this state, the movable member 23 is moved toward the fixed member 22 by the thrust of the pressure cylinder 24, and the press-fitting portion 3 and the press-fitting head 6 are pinched by the fixed member 22 and the movable member 23. The bush 5 attached to the press-fitting head 6 is structured to be press-fitted into the press-fit portion 3 from the outside of the press-fit portion 3. Here, in the state where the bush 5 is assigned to the outside of the press-fit portion 3, the press-fit axis C 1 of the press-fit head 6 is inclined with respect to the axis of the press-fit portion 3. In the bush press-fitting device 1, as shown in FIG. 6, at the time of press-fitting, the mount rubber 10 is elastically deformed according to an external force input to the mount rubber 10, and thereby the press-fitting head 6 (bush set attachment 13). The mounted bush 5 is swung following the press-fit portion 3, and the bush 5 is centered spontaneously with respect to the press-fit portion 3.

  Further, as shown in FIG. 7, the bush press-fitting device 1 includes a press-fitting head 6 corresponding to another type of suspension member 2 ′ into which the bush 5 ′ is pressed into the press-fitted portion 3 ′. ′ Is disposed on the base 26. As described above, in the bush press-fitting device 1, the press-fitting heads 6, 7, 6 ′, 7 ′ (see FIGS. 1 and 3) are arranged on the base 26 according to the suspension members 2, 2 ′. The bushes 5 and 5 'are press-fitted into various types and directions (in this embodiment, two types and two directions), and the bushes 5 and 5' are press-fitted into a plurality of types of suspension members 2 and 2 '. It is a structure that can cope with. A bush set attachment 13 'corresponding to the bush 5' is attached to each press-fitting head 6 ', 7'.

  Next, the operation of the bush press-fitting device 1 will be described. In this case, the end of one intermediate beam of the suspension member 2 (work) using the press-fitting head 6 (dedicated part) and the press-fitting unit 8 (general-purpose part) arranged on the right side of the housing 11 (right side in FIG. 1). The case where the bush 5 is press-fitted into the press-fitted part 3 formed in the part will be described. A press-fitting head 7 (dedicated part) and a press-fitting unit 9 (general-purpose part) arranged on the left side (left side in FIG. 1) of the housing 11 are described. The description of the case where the bush 5 is press-fitted into the press-fitted portion 4 formed at the end of the other intermediate beam of the suspension member 2 is omitted. First, the bush 5 is attached to the bush set attachment 13 of the press-fitting head 6 and the press-fitting head 6 is moved. As shown in FIGS. 5 and 8, the bush 5 is placed outside the press-fitting portion 3 (in FIG. 8). Address from the right). Next, the press-fitting unit 8 is moved by manual operation, and as shown in FIG. 9, the press-fitted portion 3 to which the bush 5 is assigned is fixed between the fixed member 22 and the movable member 23 of the press-fitting unit 8. Position.

  Then, the movable member 23 is moved toward the fixed member 22 by the thrust of the pressurizing cylinder 24, and the press-fit portion 3 and the press-fit head 6 are clamped by the fixed member 22 and the movable member 23, so that the press-fit head 6 is attached. The pressed bush 5 is press-fitted into the press-fit portion 3 from the outside of the press-fit portion 3. At this time, the mount rubber 10 is elastically deformed in accordance with an external force input to the mount rubber 10, and the bush 5 attached to the press-fit head 6 (bush set attachment 13) is swung following the press-fit portion 3. . Thereby, the bush 5 is centered spontaneously with respect to the press-fit portion 3, and the bush 5 is press-fitted straight into the press-fit portion 3 without being beaten.

  In addition, as shown in FIG. 7, in the case of corresponding to the suspension member 2 '(workpiece) in which the press-fitting direction of the bush 5' is different (the bush 5 'is press-fitted from the inside of the press-fit portion 3'), The bush 5 ′ may be press-fitted into the press-fitted portion 3 ′ in the same procedure as the case where the bush 5 ′ is attached to the press-fitting head 6 ′ provided on 26 and the bush 5 is press-fitted into the suspension member 2.

This embodiment has the following effects.
In the bush press-fitting device 1, the press-fitting heads 6 and 7 (dedicated parts) are provided separately (separately) from the press-fitting units 8 and 9 (general-purpose parts). By selecting 7, it is possible to cope with press-fitting of the bush 5 in many types and directions. Further, in the conventional bush press-fitting device, since the press-fitting heads 6 and 7 and the press-fitting units 8 and 9 are integrally formed, when corresponding to the suspension member 2 ′ (work) having a different press-fitting direction of the bush 5 ′, The pressurizing unit 17 needs to be replaced, and it takes a lot of time and labor to change the setup and the equipment cost increases. However, in the bush press-fitting device 1, the press-fitting units 8 and 9 There is no need to replace the press part 17), and the problem can be solved by replacing only the press-fitting heads 6 and 7 with the conventional bush press-fitting device.

  Further, the bush press-fitting device 1 is provided with a centering mechanism (centering means) in the press-fitting heads 6 and 7 (dedicated parts), and a mount rubber interposed between the attachment holder 14 and the slide base 15 at the time of press-fitting. 10 (elastic member) is elastically deformed according to the external force input to the mount rubber 10, that is, according to the inclination of the press-fitting axes C 1 and C 2 of the press-fitting heads 6 and 7 with respect to the axis of the press-fitting parts 3 and 4. The bush 5 is swung following the press-fit portions 3 and 4 and is spontaneously centered with respect to the press-fit portions 3 and 4. Thereby, it becomes possible to press-fit smoothly into the press-fit portions 3 and 4 without sandwiching the bush 5, noise during press-fit can be suppressed, and the working environment can be improved.

In addition, embodiment is not limited above, For example, you may comprise as follows.
In the present embodiment, the mounting rubber 10 is used as the elastic member to configure the centering mechanism (centering means), but the elastic member is the press-fitting axis C1 of the press-fitting heads 6 and 7 with respect to the axis of the press-fitting parts 3 and 4. , A centering mechanism (centering means) may be configured using, for example, a coil spring as long as it is elastically deformed according to the inclination of C2.

It is a front view of this bush press-fitting device. It is a right view of this bush press-fitting device. FIG. 6 is a plan view of the suspension member in a state where a press-fit portion is positioned at a press-fit position. It is a front view of the press-fit head (exclusive part) of this bush press-fitting device. It is explanatory drawing of this bush press-fit apparatus, Comprising: It is a top view which shows the state in which the bush with which the press-fitting head was mounted | worn was addressed to the outer side of the press-fit part. It is explanatory drawing of this bush press-fit apparatus, Comprising: It is a figure which shows the structure which centers a bush (press-fit head) with respect to a to-be-inserted part by elastically deforming mount rubber. It is explanatory drawing of this bush press-fit apparatus, Comprising: It is a top view which shows the state with which the bush with which the press-fit head was mounted | worn was addressed to the inner side of the press-fit part. It is explanatory drawing of this bush press-fit apparatus, Comprising: It is a front view which shows the state with which the bush with which the press-fit head was attached was addressed to the outer side of the press-fit part. It is a front view which shows the state which moved the pressurizing part in the state shown by FIG. 8, and located the to-be-pressed part and the press-fit head between the fixed member and the movable member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bush press-fit apparatus, 2 Suspension member (workpiece), 3, 4 Press-fit part, 5 Bush, 6, 7 Press-fit head (dedicated part), 8, 9 Press-fit unit (general-purpose part), 10 Mount rubber (elastic member, core) Feeding means), 13 Bush set attachment (bush mounting part), 15 Slide base (support)

Claims (3)

  A dedicated part on which the bush is detachably mounted, and a general-purpose part that pressurizes the bush mounted on the dedicated part and press-fits into the pressed-in part of the work, and the dedicated part is separated from the general-purpose part. Provided with a centering means that swings the dedicated portion according to an inclination formed by a press-fit axis of the dedicated portion and an axis of the press-fit portion to center the dedicated portion with respect to the press-fit portion. A bush press-fitting device.   The centering means is an elastic member interposed between a bush mounting portion on which the bush is mounted and a support base that supports the bush mounting portion, and elastically deforms the elastic member during press-fitting. 2. The bush press-fitting device according to claim 1, wherein the dedicated portion is centered with respect to the press-fit portion by causing the bush to follow the press-fit portion.   The bush press-fitting device according to claim 1, wherein the elastic member is a mount rubber.

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