CN114906255A

CN114906255A - Translation floating component and front cover mounting clamp thereof

Info

Publication number: CN114906255A
Application number: CN202210674195.2A
Authority: CN
Inventors: 郭志强; 王一栋; 刘昌旭; 潘海明; 陆炜; 耿红宾
Original assignee: SAIC Volkswagen Automotive Co Ltd
Current assignee: SAIC Volkswagen Automotive Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-08-16

Abstract

The invention provides a translational floating component and a front cover mounting clamp thereof, comprising: x, Y horizontal sliding plate, which has first and second ring grooves and through hole connecting the two ring grooves on the upper and lower end faces in Y direction; the one-way thrust bearing group comprises a first one-way thrust bearing and a second one-way thrust bearing, wherein a first ring of the first one-way thrust bearing is arranged in a third ring groove on the upper end surface of the Y-direction adjusting block, a first steel ball retainer is arranged on the first ring, the first ring is arranged in a second ring groove on the lower end surface of the X, Y-direction translation sliding plate, and the first ring slides on steel balls on the first steel ball retainer; and the limiting shaft penetrates through the through hole of the Y-direction adjusting block, the shaft center of the one-way thrust bearing group and the through hole of the X, Y-direction translation sliding plate and then is locked, so that the displacement of X, Y-direction translation sliding plate is limited. The invention realizes X, Y-direction translational sliding by innovative and efficient concept design, can effectively solve the problem of size fluctuation of the front cover stud and improve the field assembly efficiency.

Description

Translation floating component and front cover mounting clamp thereof

Technical Field

The invention relates to the technical field of front cover installation, in particular to a translational floating component and a front cover installation clamp thereof.

Background

In the manufacturing process of the automobile, please refer to fig. 1 and fig. 2 for the flow of installing the front cover on the automobile body. The position of the front cover inner plate stud 801 is illustrated in fig. 1, and the whole installation process is that the front cover inner plate stud 801 is assembled into a front cover hinge installation hole 802 on the vehicle body in fig. 2, and then a head locking nut is screwed through a Z-direction floating torque wrench, so that the front cover is installed.

Specifically, the flow sequence of the front cover installation is as follows: firstly, placing and positioning the front cover mounting clamp 10 on the vehicle body 90, namely, referring to fig. 3(1), and fig. 3(2) is a partial enlarged schematic view of the clamp 10 positioned at the vehicle body 90; step two, placing the front cover lock nut 803 into the nut tightening head 2021 of the Z-direction floating torque wrench 202, wherein fig. 4(1) shows a schematic view of a partial vehicle body after the lock nut 803 is placed, and fig. 4(2) shows a partial enlarged schematic view of the front cover lock nut 803 placed into the nut tightening head 2021; and step three, mounting the front cover 80 on the fixture 10 for positioning. The nut is then tightened by a Z-direction floating torque wrench 202, see fig. 5(1) and 5(2) for a front and rear view of the front cover 80, respectively.

The front cover inner plate stud 801 has a tolerance of +/-0.5 mm in three directions of the front cover assembly X, Y, Z, so that a mounting hole matched with the front cover inner plate stud is a square hole, the size of the square hole is 12 x 12, and an M8 stud is welded on the front cover inner plate. When the front cover inner plate stud 801 is welded to the front cover 80, the matching of the front cover inner plate stud 801 and the front cover hinge mounting hole 802 is not affected when the size of X, Y in two directions fluctuates. And the Z-direction deviation is compensated by the Z-direction floating torque wrench 202, and the nut is fastened.

In the process, a closed tightening mode is adopted, so that the installation space of the front cover is limited, and the gap is small.

Fig. 6(1) is a schematic view showing the installation position relationship of the front cover 80, and fig. 6(2) is a partial enlarged view of the installation space in fig. 6 (1). It can be seen that the front cover inner plate stud 801 and the front cover lock nut 803 and the nut runner 2021 of the mounting fixture 10 in the front cover closed state are in a very narrow space.

FIG. 7 is a schematic view of a conventional front cover installation jig 10, including two parts to effect positioning: one part is the positioning of the jig 10 relative to the vehicle body 90 below the jig, shown as plane B, and the other part is the positioning of the jig 10 relative to the front cover 80 above the jig, shown as plane a.

Fig. 8 is a bottom view of the mounting clip 10 of fig. 7, illustrating the positioning of the clip 10 relative to the vehicle body 90 in conjunction with its structure.

The main positioning pin controls X, Y-direction positions on the vehicle body 90, corresponding to X, Y-direction positioning pins 102 positioned at two symmetrical sides of the clamp frame 100, and the auxiliary positioning pins control X-direction positions on the vehicle body, corresponding to X-direction positioning pins 105, so that the whole clamp 10 is prevented from rotating around the main positioning pin; the Z-

direction support blocks

101, 103, 104, 106 at the four positions of the jig frame 100 control the Z-direction position of the jig 10 on the vehicle body 90. The positioning of the jig 10 on the vehicle body 90 is completed by the positioning of the Z-direction support and positioning pin X, Y.

Fig. 9 is a top view of the mounting fixture 10 of fig. 7, illustrating the positioning of the fixture 10 relative to the front cover 80 in conjunction with its structure.

The X, Y direction positioning pin 208 arranged on one side of the clamp frame 100 is a main positioning pin for controlling the X, Y direction position of the front cover 80 on the clamp 10, the X direction positioning pin 203 arranged on the other side of the clamp frame 100 is an auxiliary positioning pin for controlling the X direction position of the front cover 80 on the clamp 10, the Z

direction supporting blocks

201, 204, 207 and 210 at four positions, the Z direction position of the front cover 80 on the clamp 10 is controlled, and the positioning of the front cover 80 on the clamp 10 is completed through supporting and positioning. The two symmetrically arranged Z-direction floating

torque wrenches

202 and 209 are connected with the clamp frame 100 through two adjusting blocks respectively.

As mentioned above, the tolerance of the position tolerance of the front cover inner plate stud 801 welded to the front cover inner plate X, Y, Z in three directions is ± 0.5mm, and when the Z-direction dimension of the stud 801 fluctuates, the Z-direction floating

torque wrenches

202 and 209 located at two positions can automatically compensate the Z-direction dimension deviation of the stud 801, and complete the tightening of the front cover locking nut 803.

However, when the X, Y dimension of the stud 801 fluctuates, the Z-direction floating

torque wrenches

202 and 209 cannot compensate for the dimensional deviation. Since the Z-direction floating

torque wrenches

202 and 209 have already been tightened on the X-direction adjustment block 213 of the jig 10.

Please refer to fig. 10(1) and fig. 10(2) for an enlarged view of the Z-direction floating torque wrench 202 fixed on the clamp. The tightening head 2021 of the Z-direction floating torque wrench 202 is adjusted to the theoretical position of the front cover stud 801 by the components such as the Z-direction adjustment block 211, the Y-direction adjustment block 212, and the X-direction adjustment block 213, and the tightening head 2021 of the Z-direction floating torque wrench is perpendicular to the theoretical position center of the front cover inner plate stud 801 at this time.

The adjusted Z-direction floating torque wrench 202 cannot be moved X, Y in size. Therefore, when the X, Y-direction dimension of the inner plate stud 801 of the front cover fluctuates, the Z-direction torque floating wrench 202 tightens the nut in the head 2021, and the problem of misalignment with the inner plate stud 801 of the front cover occurs.

Although the foregoing solution can complete the installation of the front cover assembly, the X, Y-direction dimensional fluctuation of the front cover inner plate stud 801 cannot be compensated by the Z-direction floating torque wrench 202, and the following problems occur when the front cover assembly is installed using this structure.

Firstly, the nut position and the stud position are not aligned, and the problem of nut or stud tooth decay occurs when the nut or the stud is forcibly screwed. And secondly, the position of the nut is not aligned with the position of the stud, stress can be generated in the process of forced screwing, and the size of a gap of the front cover is influenced by stress release. In addition, the nut position and the stud position are not aligned, the stud thread damage problem can occur when the stud is forcibly screwed, the front cover needs to be replaced seriously, and the cost is increased. Moreover, the nut position is not aligned with the stud position, and forced tightening of either the nut or the stud leads to an increase in time and material costs.

Disclosure of Invention

It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure.

In view of the above circumstances, there is a strong demand for a front cover mounting jig having an X, Y, Z-directional floating function, which can improve the quality of front cover mounting and reduce time cost.

In order to achieve the above object, the present invention provides a translational floating component, which is disposed between a Y-direction adjusting block and a Z-direction floating torque wrench, wherein one surface of the Y-direction adjusting block is provided with at least one through hole, and an annular groove is disposed on an upper end surface of the through hole, the translational floating component comprising:

x, Y horizontal sliding plate, which has first and second ring grooves and through hole connecting the two ring grooves on the upper and lower end faces in Y direction;

the one-way thrust bearing group comprises a first one-way thrust bearing and a second one-way thrust bearing, wherein a first shaft ring of the first one-way thrust bearing is installed in a third ring groove on the upper end surface of the Y-direction adjusting block, a first steel ball retainer is arranged on the first shaft ring, the first seat ring is arranged in a second ring groove on the lower end surface of the X, Y direction translation sliding plate, and the first seat ring slides on steel balls on the first steel ball retainer;

a second seat ring of the second one-way thrust bearing is arranged in a first ring groove of the X, Y-direction translational sliding plate, a second steel ball retainer is arranged on the second seat ring, a second shaft ring is arranged on the second steel ball retainer, and the second seat ring slides on steel balls on the second steel ball retainer;

and the limiting shaft penetrates through the through hole of the Y-direction adjusting block, the axis of the one-way thrust bearing group and the through hole of the X, Y-direction translation sliding plate and then is locked, so that the displacement of the X, Y-direction translation sliding plate is limited.

Preferably, the present invention still further provides a translational floating member, characterized in that,

the range of the gap width between the diameter of the limiting shaft and the shaft center hole of the one-way thrust bearing group is 1-60 mm.

the thrust bearing sets comprise 3 sets, and two sets of thrust bearing sets are arranged on the X, Y-direction translation sliding plate at equal intervals.

the translational float member further includes:

a protective sleeve covering the second one-way thrust bearing exposing a portion of the X, Y-way translation sliding plate.

The invention discloses a front cover mounting clamp, which comprises the translational floating component, a clamp frame, clamp positioning movable mechanisms positioned at two sides of the clamp frame, a supporting mechanism and a Z-direction floating torque wrench, wherein the clamp positioning movable mechanisms further comprise:

and the adjusting part is used for adjusting the Z-direction floating wrench in the X, Y, Z direction.

Preferably, the present invention further provides a front cover attaching jig, wherein the adjusting portion further includes:

the X-direction adjusting block, the Z-direction adjusting block and the Y-direction adjusting block are connected in pairs, the adjusting blocks comprise two connected plates, and one surface of each Z-direction adjusting block is fixed on the clamp frame through a first adjusting gasket; the other side of Z to the regulating block pass through the second adjusting shim with one side of X is connected to the other side of X to the regulating block, the other side of X to the regulating block pass through the third adjusting shim with the other side of Y is to the regulating block links to each other, through increase and decrease first, second, third adjusting shim adjusts Z is to the position of moment of torsion X, Y, Z that floats.

Preferably, the present invention further provides a front cover installation jig, characterized in that the front cover installation jig further comprises:

and the front cover locking nut is in a floating state when being arranged in the Z-direction floating torque wrench tightening head in a floating mode, and when the front cover inner plate stud is in contact with the front cover locking nut, the position of the front cover locking nut can move according to the position of the front cover inner plate stud.

Preferably, the invention further provides a front cover mounting fixture, which is characterized in that the support mechanism comprises a fixture support unit and a front cover support unit, and the front cover support unit further comprises a front cover positioning support unit which is arranged on the fixture at a position corresponding to the mounting position of the front cover inner plate.

Preferably, the present invention further provides a front cover installation jig, wherein one end of the Z-direction floating torque wrench is connected to the X, Y-direction translational sliding plate, and the other end is connected to the jig frame through the front cover positioning support unit.

The X, Y-direction translational sliding device is designed in an innovative and efficient concept, the problem of tooth decay of nuts and studs in the process of screwing the nuts due to size fluctuation of the front cover studs can be effectively solved, and the field assembly efficiency is improved.

Drawings

Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present disclosure are selected from publicly known and used terms, some of the terms mentioned in the specification of the present disclosure may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present disclosure is understood, not simply by the actual terms used but by the meaning of each term lying within.

The above and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the following detailed description of the present invention with reference to the accompanying drawings.

FIG. 1 illustrates a schematic diagram of a front cover inner plate stud position;

FIG. 2 is a schematic view of a front cover stud mounting square hole;

FIG. 3(1) is a schematic view illustrating the positioning of the front cover positioning jig on the vehicle body;

FIG. 3(2) shows a partial enlarged view of FIG. 3 (1);

FIG. 4(1) is a schematic diagram showing the approximate location of the Z-direction floating torque wrench tightening head on the front cover positioning clamp;

FIG. 4(2) is a schematic illustration of the placement of the front cover lock nut into the Z-directed floating torque wrench head;

FIG. 5(1) is a schematic view showing the front cover mounted to the positioning jig;

FIG. 5(2) is a schematic illustration of the post-installation view of FIG. 5 (1);

fig. 6(1) and 6(2) are respectively a schematic view showing the mounting position relationship of the front cover and a partially enlarged view thereof;

FIG. 7 is a schematic view of a conventional front cover mounting fixture 10;

FIG. 8 is a bottom view of the mounting clip 10 of FIG. 7;

FIG. 9 illustrates a top view of the mounting fixture 10 of FIG. 7;

FIGS. 10(1) and 10(2) are a schematic view and a partially enlarged view of a Z-direction floating torque wrench fixed to a clamp;

FIG. 11 is a schematic structural view of a front cover installation jig with a translating floating member according to the present invention;

FIG. 12 is a schematic view of the front cover attaching jig of the present invention shown in a configuration with respect to a side of a vehicle body, i.e., a B-plane;

FIG. 13 is a schematic view of the front cover mounting fixture of the present invention shown in a configuration corresponding to a side A of the front cover;

FIGS. 14(1) and 14(2) show a schematic and a partial enlarged view, respectively, of one of the translational float members 409 of FIG. 13;

FIGS. 15(1) and 15(2) illustrate a combined schematic view and an exploded schematic view, respectively, of a thrust bearing 504;

FIG. 16(1) is a front view of a combined structure of a Y-direction adjusting block 503, a one-way thrust bearing 504 and an XY-direction translation sliding plate 505; FIG. 16(2) is a sectional view taken along line B-B of FIG. 16 (1); FIG. 16(3) is a perspective view thereof; FIG. 16(4) is a sectional view A-A thereof;

figure 17 illustrates a schematic view of the mounting when the clip of the present invention is applied in assembly.

Reference numerals

10-front cover mounting clamp

80-front cover

801-front cover inner plate stud

802-front cover hinge mounting hole

803-front cover lock nut

90-vehicle body

901-stud

100-clamp frame body

100a, 100 b-clamp positioning moving mechanism

101-Z direction supporting block

102-X, Y directional locating pin

103-Z direction supporting block

104-Z direction supporting block

105-X direction positioning pin

106-Z direction supporting block

201-Z direction supporting block

202-Z direction floating torque wrench

2021-nut tightening head

203-X direction positioning pin

204-Z direction supporting block

205-Z direction supporting block

206-Z direction supporting block

207-Z direction supporting block

208-X, Y are oriented to the locating pin

209-Z direction floating torque wrench

210-Z direction supporting block

211-Z direction regulating block

212-Y direction regulating block

213-X direction regulating block

300-clamp frame body

301-Z direction supporting block

302-auxiliary locating pin

303-Z direction supporting block

304-Z direction supporting block

305-main locating pin

306-Z direction supporting block

402-X, Y to translate the floating member

403-Z-direction floating torque wrench

404-X, Y, Z directional locating pin

405-Z direction supporting block

406-Z direction supporting block

407-X, Z oriented locating pins

408-Z-direction floating torque wrench

4081-Z-direction floating torque wrench tightening head

409-X, Y to translate the floating member

501-Z direction adjusting block

502-X direction adjusting block

503-Y direction regulating block

501 ', 502 ', 503 ' -adjustment pad

504-one-way thrust bearing unit

504 a-first one-way thrust bearing

504 b-second one-way thrust bearing

504a1, 504b 1-axle ring

504a2, 504b 2-ball cage

504a3, 504b 3-race

505-X, Y to translate the slide plate

601-nut

602-protective sleeve

603-limiting shaft

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood, not simply by the actual terms used but by the meaning of each term lying within.

FIG. 11 is a schematic structural view of the front cover installation jig of the present invention with a translating floating member.

The jig includes a jig frame 100, jig positioning moving

mechanisms

100a and 100b located at both sides of the frame 100, and a support mechanism. The A and B planes illustrated in the figure are respectively: the a-plane is the positioning of the jig 10 with respect to the front cover 80, and the B-plane is the positioning of the jig 10 with respect to the vehicle body 90.

The translational floating

members

402, 409 are symmetrically arranged at the two symmetrical ends of the front cover mounting clamp facing the front cover, and respectively belong to the components of the clamp positioning moving

mechanisms

100a, 100 b.

Fig. 12 is a schematic structural view of the front cover attaching jig 10 according to the present invention, which is shown on the side of the vehicle body 90, i.e., the side B, and fig. 13 corresponds to a schematic structural view of the front cover attaching jig 10, which is shown on the side of the front cover 80, i.e., the side a.

As is understood from fig. 12 and 13 showing the front and rear structures of the jig, the

jig positioning mechanisms

100a, 100b each include a

body positioning unit

302, 305, and a front cover

positioning support unit

404, 407.

Among them, the

jig support units

301, 306, 303, 304 and the front

cover support units

405, 406 are respectively used to support the vehicle body 90 and the front cover 80 of the jig 10, and belong to a support mechanism.

With further reference to fig. 13, Z-floating

torque wrenches

403, 408 are attached to the clamp frame 100 by front cover

positioning support units

404, 407, respectively, and translational floating

members

402, 409 of the present invention are attached between the Z-floating

torque wrenches

403, 408 and the clamp frame 100, respectively.

Fig. 14(1) and 14(2) show a schematic view and a partial enlarged view of one of the translation floating members 409 in fig. 13, respectively.

As can be seen from this illustration, the translational floating member 409 comprises X, Y a translational slide plate 505 and three one-way thrust bearings 504 disposed thereon. Three bearings 504 are arranged on the sliding plate 505 in an equilateral triangle, and the translation sliding plate 505 is connected with the adjusting part through the three bearings 504, so that the XYZ-direction adjustment is realized.

The adjusting part comprises a Z-direction adjusting block 501, an X-direction adjusting block 502, a Y-direction adjusting block 503 and an adjusting gasket. The three adjusting blocks are all of a two-plane vertical structure.

One plane of the Y-direction adjusting block 503 is fixed to the translation sliding plate 505 through the three sets of one-way thrust bearings 504, and the Z-direction floating torque wrench 408 is fixed to the other end of the translation sliding plate 505.

The other plane of the Y-direction adjusting block 503 is connected with a plane of the X-direction adjusting block 502, a part adjusting gasket 503 ' is sandwiched between the two planes, the other plane of the X-direction adjusting block 502 is connected with a plane of the Z-direction adjusting block 501, a part adjusting gasket 502 ' is sandwiched between the two planes, and the other plane of the Z-direction adjusting block 501 is fixedly connected to the clamp frame 100 through the part adjusting gasket 501 '.

The floating mechanism of the translational floating member 409 of the present invention is: to ensure that the Z-direction floating wrench nut runner 4081 is concentric with the bezel mounting stud theoretical position, X, Y, Z three direction adjustable mechanisms were designed for the Z-direction floating wrench 408 mounting.

The adjusting gaskets are applied to three connecting surfaces, and the specific respective functions are as follows: the Z-direction position of the Z-direction floating wrench 408 is adjusted by increasing or decreasing the part adjusting gaskets 501'; the X-direction position of the Z-direction floating wrench 408 is adjusted by increasing or decreasing the part adjusting gaskets 502'; the Y-position of the Z-floating wrench 408 is adjusted by increasing or decreasing the part adjusting spacers 503'.

The Z-direction floating wrench 408 is installed on the X, Y-direction translation sliding plate 505, the Y-direction adjusting block 503 is an installation base plate of the X, Y-direction translation floating mechanism 409, and the Y-direction adjusting block 503 and the X, Y-direction translation sliding plate 505 are arranged between each other, so that the X, Y-direction translation sliding work is completed through the one-way thrust bearing 504, and the X, Y-direction translation floating function of the Z-direction floating wrench 408 is realized.

The structure of the one-way thrust bearing 504 in the translational floating member 409 and the operation of the Z-floating torque wrench 408 to achieve translational floating at X, Y will now be described.

Fig. 15(1) and 15(2) show a combined view and an exploded view of a one-way thrust bearing 504, respectively.

The bearing 504 includes a separable race 5041, a ball cage 5042, and a race 5043. The balls 5044 of the ball cage 5042 slide rotationally within a race 5043 having a track 50431. The collar 5041 and race 5043 enclose a ball cage 5042 therein to form the combined structure shown in fig. 15 (1).

In the preferred embodiment, the bearing 504 is a conventional separable bearing, but is assembled differently than a conventional bearing, as will be described in more detail below.

Fig. 16(1) is a front view showing an assembled structure of a Y-direction adjusting block 503, a one-way thrust bearing 504 and an XY-direction translation sliding plate 505, fig. 16(2) is a sectional view taken from B-B of fig. 16(1), and fig. 16(3) is an assembled perspective view thereof; FIG. 16(4) is a sectional view thereof taken along line A-A.

Please refer to fig. 16(2), which shows a sectional structure of B-B. Two one-way thrust bearings are adopted in the Y direction to form a bearing set corresponding to one of the three one-way thrust bearings visible in the appearance, that is, the first one-way bearing 504a and the second one-way bearing 504b form one set, but only the second one-way bearing 504b is seen from the outside, and the detailed structure of any one of the first one-way thrust bearing 504a and the second one-way thrust bearing 504b is shown in fig. 15.

For the matching installation, the first and second ring grooves with the same size are opened on the lower end surface of X, Y in the Y direction of the translational sliding plate 505, the third ring groove with the same size is also opened on the upper end surface of the Y direction adjusting block 503, the third ring groove is coaxial, and the first one-way thrust bearing 504a is arranged in the space surrounded by the second and third ring grooves.

During installation, firstly, a shaft ring 504a1 of a first one-way thrust bearing 504a at a lower position in the Y direction is installed in a third ring groove which is pre-opened on the upper end surface of a Y-direction adjusting block 503, then a steel ball retainer 504a2 is placed on a steel ball track on the seat ring 504a3, and steel balls on the steel ball retainer 504a2 are limited by the steel ball track on the shaft ring 504a1 and can only slide on the steel ball track; the race 504a3 is disposed in a second annular groove pre-formed in the lower end surface of the translational sliding plate 505 at X, Y, the flat surface of the race 504a3 is in direct contact with the steel balls in the lower ball retainer 504a2, and the race 504a3 can slide on the steel balls in any direction. However, since the X, Y-direction translation slide plate 505 is free, the Z-direction position of the X, Y-direction translation slide plate 505 is fixed, and the amount of translational floating of the X, Y-direction translation slide plate is limited.

Since the position of X, Y in the Z direction of the translational sliding plate 505 is fixed and the function of X, Y in translational floating cannot be affected, X, Y is provided with a second one-way thrust bearing 504b at a higher position in the Y direction of the translational sliding plate 505, the race 504b3 of the bearing is installed in a first annular groove (the surface with the steel ball track, which is installed inside the annular groove) which is pre-opened on the upper end surface of the translational sliding plate 505 in the X, Y direction, and then the bearing is sequentially placed into the steel ball retainer 504b2 and the shaft race 504b1, so that the plane of the race 504b3 is directly contacted with the steel balls of the steel ball retainer 504b2, and the first one-way thrust bearing 504a and the second one-way thrust bearing 504b are coaxially installed. Thus, X, Y, one single direction thrust bearing is provided on each of the upper and lower surfaces of the translational slide plate 505, X, Y the translational slide plate 505 slides between the two single

direction thrust bearings

504a, 504b, and the second single direction thrust bearing 504b on the upper end surface is fixed, thereby limiting the Z-direction position of X, Y to the translational slide plate 505.

The first and second one-

way thrust bearings

504a and 504b arranged in the Y direction are coaxial, then, a limit shaft 603 is installed from the bottom of the Y-direction adjusting block 503 along the axial centers of the first and second one-

way thrust bearings

504a and 504b, the limit shaft penetrates through the Y-direction adjusting block 503, X, Y in sequence to the translation sliding plate 505, and the first and second one-

way thrust bearings

504a and 504b, the limit shaft 603 penetrates through the sliding plate 505 and is locked by a nut 601, thereby limiting the Z-direction position of X, Y to the translation sliding plate 505.

In order to protect the stability of the whole structure, a protective sleeve 602 is additionally arranged on the shaft ring 504b1 directly exposed outside of the second one-way thrust bearing 504b on the upper end surface of the X, Y translation sliding plate 505, and the second one-way thrust bearing 504b with the upper end surface exposed outside is wrapped in the protective sleeve 602, so that the service life of the second one-way thrust bearing 504b on the upper end surface is protected.

According to the principle of three elements of point, line and plane, the above-mentioned translational floating member 409 composed of a set of two unidirectional thrust bearings can only be a single point, and for the structural stability, the preferred embodiment of the present invention uses the same three sets of unidirectional thrust bearings to form a plane, i.e. an equilateral triangle is arranged on the XY-direction translational sliding plate 505, so as to form a stable plane, as shown in fig. 16 (3).

Fig. 16(4) is a sectional view taken along line a-a of fig. 16(1), further illustrating the control principle of the translational floating member 409.

According to the above description, the two coaxial first and second one-

way thrust bearings

504a and 504b are locked in their Z-direction positions by the stopper shaft 603, the stopper shaft 603 penetrates the Y-direction adjusting blocks 503 and X, Y to the translational sliding plate 504 and the two one-

way thrust bearings

504a and 504b, the upper and lower two shaft rings 504a1 and 504b1 and the steel ball retainers 504a2 and 504b2 in the set of one-way thrust bearings are in a fixed state, and the races 504a3 and 504b3 mounted on the translational sliding plate 505 in X, Y are in direct contact with steel balls to perform translational sliding.

In the preferred embodiment, the limiting shaft 603 is a shaft

The circle center diameter of the races 504a3, 504b3 is

X, Y is also made to have a diameter towards the groove of the sliding plate 505 for holding the race

Of circular grooves, i.e. of

Is surrounded by

The circular shaft of (a) performs translational sliding, so that the floating amount of 2mm exists in both positive and negative directions of X, Y.

In a specific application occasion, the range of the diameter of the limiting shaft and the width of the clearance of the shaft center hole of the one-way thrust bearing set is 1-60 mm.

And limiting the shaft 603

Diameter of the circular shaft and the seat ring

The circular size of the front cover inner plate stud 801 is matched with the circular size of the front cover inner plate stud 801 and the front cover hinge mounting hole 802, even if the size deviation of X, Y on the front cover inner plate stud 801 is larger than +/-0.5 mm, as long as the front cover inner plate stud 801 can be mounted in the front cover hinge mounting hole 802, the existing X, Y-direction translation floating componentThe nut and the stud can be screwed in a concentric state.

Considering that the front cover inner plate stud 801 has been welded to the front cover 80 and its position on the front cover 80 is fixed, when the front cover 80 is manually placed on the jig 10 for positioning, the front tip of the stud 801 first contacts the front cover lock nut 803, see the installation process schematic given in fig. 17, when the stud 801 functions as a pilot nut because the front cover lock nut 803 is floating in the Z-direction floating torque wrench socket 4081, and when the fixed stud 801 contacts the floating lock nut 803, the position of the floating lock nut 803 will move according to the position of the front cover inner plate stud 801. Thus, even if the position of the front cover inner plate stud 801 fluctuates within the tolerance range, the front cover locking nut 803 can be guided to be concentric with the front cover inner plate stud and can be screwed down in a concentric state.

The device effectively solves the problem of the misalignment of the nut and the stud, and the complaint of reworking caused by the tooth decay of the nut and the stud is solved. The existing front cover mounting clamp is consistently good commented on a production field.

In conclusion, the X, Y-direction translational sliding device is designed by an innovative and efficient concept, and the problem of nut and stud tooth rot caused by the size fluctuation of the front cover stud in the screwing process of the nut can be effectively solved. The invention has the following advantages: (1) the nut and the stud are screwed in a concentric state all the time, and the problem of tooth decay of the nut and the stud is avoided; (2) the nut and the stud are screwed in a concentric state, so that deviation stress cannot be generated; (3) the reworking amount increase and the production cost increase caused by the problem of screw bolt and nut tooth decay are avoided, and the field assembly efficiency is improved.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

Although the present application has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the present application and that various equivalent changes or substitutions may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above embodiments within the spirit of the application fall within the scope of the claims of the application.

Claims

1. The utility model provides a translation floating member, sets up Y to regulating block and Z to floating between the torque wrench, Y sets up an at least through-hole to the one side of regulating block, the through-hole up end sets up the annular, its characterized in that, translation floating member includes:

the one-way thrust bearing group comprises a first one-way thrust bearing and a second one-way thrust bearing, wherein a first ring of the first one-way thrust bearing is installed in a third ring groove on the upper end surface of the Y-direction adjusting block, a first steel ball retainer is arranged on the first ring, the first ring is arranged in a second ring groove on the lower end surface of the X, Y-direction translation sliding plate, and the first ring slides on steel balls on the first steel ball retainer;

2. The translating floating member of claim 1,

3. The translating floating member of claim 2,

the thrust uni-directional bearing sets comprise 3 sets arranged equidistantly two by two on the X, Y direction translation slide plate.

4. The translating float member of claim 1 further comprising:

5. A front cover installation jig comprising the translating floating member of any one of claims 1 to 4, the front cover installation jig further comprising a jig frame, jig positioning living mechanisms located on either side of the jig frame, a support mechanism, and the Z-direction floating torque wrench, wherein the jig positioning living mechanisms further comprise:

6. The front cover installation jig of claim 5, wherein the adjustment portion further comprises:

the fixture comprises an X-direction adjusting block, a Z-direction adjusting block and a Y-direction adjusting block which are connected in pairs, wherein the adjusting blocks comprise two connected plates, and one surface of the Z-direction adjusting block is fixed on the fixture frame through a first adjusting gasket; the other side of Z to the regulating block pass through the second adjusting shim with one side of X is connected to the other side of X to the regulating block, the other side of X to the regulating block pass through the third adjusting shim with the other side of Y is to the regulating block links to each other, through increase and decrease first, second, third adjusting shim adjusts Z is to the position of moment of torsion X, Y, Z that floats.

7. The front cover installation jig of claim 6, further comprising:

8. The front cover installation jig of claim 7,

the supporting mechanism comprises a clamp supporting unit and a front cover supporting unit, and the front cover supporting unit further comprises a front cover positioning supporting unit which is arranged on the clamp corresponding to the mounting position of the inner plate of the front cover.

9. The front cover installation jig of claim 8,

one end of the Z-direction floating torque wrench is connected to the X, Y-direction translation sliding plate, and the other end of the Z-direction floating torque wrench is connected to the clamp frame through the front cover positioning and supporting unit.