Roller quick assembly tool and assembly method thereof

Abstract

The application provides a kind of roller quick assembly tool and its assembly method, by changing the cage structure of planetary roller screw to adjust the assembly sequence of roller and cage, to reduce the assembly difficulty of planetary roller screw, improve the assembly efficiency and reduce the requirement of assembly personnel;The application also proposes an opening limiting cage structure design method matched with the roller quick assembly tool, combined with the feature point contour shape determination method and finite element simulation analysis technology, to complete the opening limiting cage structure design under the limitation of small size and low material strength.The application can greatly improve the assembly efficiency of roller screw, especially suitable for the assembly of roller screw transmission mechanism with limited operation space.Combined with the feature point contour shape determination method and finite element simulation analysis technology, the opening limiting cage structure design under the limitation of small size and low material strength is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of planetary roller screw, in particular to a roller quick assembly tool and method thereof. BACKGROUND

[0002] The planetary roller screw is a mechanical transmission device that converts rotary motion into linear motion through thread engagement. Compared with the ball screw, the planetary roller screw has higher impact resistance, stronger load capacity and longer service life. The planetary roller screw is widely used in high-load, high-precision and high-speed systems, such as welding robots, fifth-generation fighter F-35B, machine tool feeding systems, vehicle erecting systems and other facilities.

[0003] An existing planetary roller screw closed retainer structure and its roller assembly method first assemble a retainer, then assemble the roller, and then assemble another retainer and an inner gear ring. This assembly method is low in efficiency, troublesome in assembly operation process, and greatly affected by human factors, which reduces the production efficiency of the planetary roller screw and increases the assembly difficulty of the planetary roller screw. Therefore, it is necessary to propose a planetary roller screw roller quick assembly method and an open limiting retainer structure design method. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the present application provides a roller quick assembly tool and its assembly method. The purpose of the present application is to provide a roller quick assembly tool, which changes the retainer structure of the planetary roller screw to adjust the assembly order of the roller and the retainer, so as to reduce the assembly difficulty of the planetary roller screw, improve the assembly efficiency and reduce the requirement for the assembly personnel; the present application also proposes an open limiting retainer structure design method matched with the roller quick assembly tool, which combines the feature point contour shape determination method and the finite element simulation analysis technology to complete the open limiting retainer structure design under the limitation of small size and low material strength.

[0005] The quick assembly tool is suitable for assembling planetary roller screw transmission mechanisms such as standard planetary roller screws, reverse planetary roller screws and differential planetary roller screws. The roller quick assembly tool comprises an open limiting retainer and an auxiliary base, wherein the open limiting retainer comprises a retainer base body and an open limiting structure. In the traditional roller screw assembly, two retainers are respectively installed before and after the completion of the assembly of the roller, and there are problems such as difficult adjustment of the position of the roller, lack of effective support for the roller during assembly and difficulty in simultaneous cooperation of multiple rollers and retainers, which seriously restricts the assembly efficiency of the roller screw. The present application proposes a quick assembly method of first completing the assembly of two retainers, using the auxiliary base and the two retainers to realize stable support of the roller, and then installing the roller. Compared with the traditional assembly method and structure, the present application can greatly improve the assembly efficiency of the roller screw, and is particularly suitable for the assembly of roller screw transmission mechanisms with limited operation space. The present application also comprises a structure design method of an open limiting retainer matched with the roller quick assembly tool, which combines the profile shape determination method of feature points and the finite element simulation analysis technology to complete the structure design of the open limiting retainer under the limitation of small size and low material strength.

[0006] The technical solution adopted by the present application to solve its technical problems is:

[0007] A roller quick assembly tool comprises an open limiting retainer, an auxiliary base and a roller, the open limiting retainer is placed on the auxiliary base, the auxiliary base is horizontally placed at the bottom of the open limiting retainer in the assembly body, there are two open limiting retainers, the roller is vertically assembled in the open limiting retainer, the periphery of the open limiting retainer is a nut, an inner gear ring is arranged between the upper end of the roller and the inner diameter of the nut.

[0008] Preferably, in the roller quick assembly tool, the open limiting retainer comprises a retainer base body and an open limiting structure, the retainer base body is a ring structure, the inner diameter of the retainer base body is provided with a plurality of uniformly distributed open limiting structures, the open limiting structure is a symmetrical structure, each open limiting structure comprises symmetrical unloading groove structures, through hole structures, protruding structures and end parts, two groups of unloading groove structures, through hole structures, protruding structures and end parts form buckles, the cylinder at the upper end and the lower end of the roller is buckled into the through hole structure from the protruding structure through the end part.

[0009] Preferably, in the roller quick assembly tool, the auxiliary base comprises an auxiliary base base step, a retainer support step and a radial positioning ring, the auxiliary base base step is a cylindrical base at the bottom of the auxiliary base; the retainer support step is a disc-shaped support step arranged on the upper layer of the auxiliary base base step; the radial positioning ring is a circular ring arranged on the upper layer of the retainer support step.

[0010] Preferably, in the roller quick assembly tool, a circular through hole is arranged at the center of the auxiliary base, the circular through hole is larger than the major diameter of the screw rod, the base step, the support step of the retainer and the radial positioning ring are coaxial with the circular through hole.

[0011] Preferably, in the roller quick assembly tool, the diameter of the base step of the auxiliary base is larger than the diameter of the large end of the nut.

[0012] Preferably, in the roller quick assembly tool, the diameter of the support step of the retainer is equal to the outer diameter of the open limiting retainer.

[0013] Preferably, in the roller quick assembly tool, the diameter of the radial positioning ring is smaller than the inner diameter of the open limiting retainer.

[0014] The application also provides an assembly method of the roller quick assembly tool, comprising the following steps:

[0015] Step 1, take the auxiliary base, place the auxiliary base horizontally, place an open limiting retainer on the auxiliary base horizontally, then make the smooth inner groove of the inner tooth ring horizontally downward to make the open limiting retainer enter the smooth inner groove of the inner tooth ring, and then make the large end of the nut horizontally downward to make the inner tooth ring enter the smooth inner groove of the nut;

[0016] Step 2, take the inner tooth ring, make the smooth inner groove of the inner tooth ring horizontally upward and enter the smooth inner groove of the small end of the nut, and then make an open limiting retainer enter the smooth inner groove of the inner tooth ring;

[0017] Step 3, take a roller, place the roller vertically along the axis and make the cylinders at the upper end and the lower end of the roller correspondingly enter the open limiting structure in the open limiting retainer, repeat the installation of the roller until all the rollers are installed at the corresponding positions, then remove the auxiliary base and assemble the screw rod;

[0018] The application also provides a design method of the open limiting retainer of the roller quick assembly tool, comprising the following steps:

[0019] Step 1, determine the geometric characteristics of the retainer base body and the geometric characteristics of the open limiting structure;

[0020] The inner side and the outer side of the retainer base body are concentric circles; the open limiting structure is arrayed inside the retainer base body around the axis; the axial thicknesses of the retainer base body and the open limiting structure are the same;

[0021] The geometric characteristic points of the axisymmetric shape of the open limiting structure are P1, P2, P3, P4, P5, P6, P7,

[0022] P8, P9; the open limiting structure is a geometric contour shape of a curve segment, wherein the curve segment Represents the contour shape of the unloading chute structure, the curve segment With curve segment Represents the outline shape of the through-hole structure, a broken line segment With straight line segment Represents the contour shape of the raised structure, straight line segment Represents the contour shape of the end part; curved segment On the inner circle of the retaining frame base, the straight line segment With curve segment tangent;

[0023] The feature points P2, P3, P4, P5, P6, P7, and P9 have rounded corners;

[0024] Step 2: Determine the characteristic parameters and dimensions H, R of the retainer base and opening limit structure a ,R b ,R c ,R d , R1, R2, h1, h2, h3, h4, L1, L2; the axial thickness of the retainer base and the opening limiting structure is H;

[0025] The coordinate system origin O of the basic outline shape of the opening limiting structure is located on the curve segment of the symmetry axis of the opening limiting structure. Center of the circle;

[0026] The common center coordinate C1 of the inner circle and outer circle of the retaining frame base is X c , Y c ; where X c =0, Y c =-R c ; The inner circle diameter is R a , the outer circle diameter is R b , the number of arrays of the opening limiting structure around the axis is k;

[0027] Curve segment The arc radius is R a , the coordinates of the circle center are C1; the coordinates of point P1 are X1, Y1; where X1=0, Y1=R a -R c ;

[0028] The coordinates of point P2 are X2, Y2; where X2 = h1,

[0029] Curve segment The arc radius is R1, the center coordinates are O, and the coordinates of point P3 are X3, Y3; where X3 = h1,

[0030] The coordinates of point P4 are X4, Y4; where X4 = h2, h2 is the radius of the upper and lower end cylinder of the roller;

[0031] The coordinates of the P5 point are X5, Y5; wherein X5 = h3, Y5 = -h4;

[0032] The curve segment has a circular arc radius R d , a center coordinate C1, and the coordinates of the P6 point are X6, Y6; wherein X6 = h2,

[0033] The coordinates of the P7 point are X7, Y7; wherein

[0034]

[0035] The curve segment has a circular arc radius R2, a center coordinate O, and the coordinates of the P8 point are X8, Y8; wherein X8 =

[0036]

[0037] The coordinates of the P9 point are X9, Y9; wherein

[0038] The chamfer radius at P2, P3, P6, P7, P9 is L1, and the chamfer radius at P4, P5 is L2;

[0039] Step 3, finite element assembly analysis is performed;

[0040] The finite element assembly analysis is a finite element simulation analysis of the assembly process of the upper and lower end cylinders of the roller along the radial direction into the open limiting structure of the cage according to the target requirement of the roller along the radial direction into the open limiting cage;

[0041] Step 4, whether the stress result obtained by the finite element assembly analysis meets the design requirement, the design requirement is that the maximum Mises stress in the finite element assembly analysis result does not exceed the yield limit of the material, and the maximum node reaction force in the finite element assembly analysis process does not exceed 30N, when the stress result obtained by the finite element assembly analysis meets the design requirement, the open limiting cage structure design is formed; if the stress result obtained by the finite element assembly analysis does not meet the requirement, repeat steps 2-3 until the stress result obtained by the finite element assembly analysis meets the design requirement; thus, the structure design of the open limiting cage is completed.

[0042] The beneficial effect of the present application is that the standard closed cage structure is replaced by the open limit cage structure, combined with the roller rapid assembly tooling, the assembly difficulty is reduced by changing the assembly sequence of the planetary roller screw parts, the open limit cage structure design method matched with the roller rapid assembly tooling is also provided, the open limit cage structure design problem under small size and low material strength is solved according to the feature point contour shape determination method and finite element simulation analysis technology. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 It is the structure schematic diagram of the roller rapid assembly method provided by the present application.

[0044] Figure 2 It is the open limit cage structure schematic diagram provided by the present application.

[0045] Figure 3 It is the auxiliary base structure schematic diagram provided by the present application.

[0046] Figure 4 It is the roller structure schematic diagram provided by the present application.

[0047] Figure 5 It is the open limit structure plane schematic diagram in the open limit cage provided by the present application.

[0048] Figure 6 It is the open limit cage structure design feature point schematic diagram provided by the present application.

[0049] Figure 7 It is the open limit cage structure design feature size schematic diagram provided by the present application.

[0050] Figure 8 It is the open limit structure cage design method flow chart provided by the present application.

[0051] Figure 9 It is the Mises stress result cloud diagram of the embodiment of the present application.

[0052] Figure 10 It is the node counter force process diagram of the embodiment of the present application.

[0053] Wherein, 1 is the open limit cage, 2 is the auxiliary base, 3 is the roller, 4 is the nut, 5 is the inner gear ring, 1-1 is the cage base body, 1-2 is the open limit structure, 2-1 is the auxiliary base base step, 2-2 is the cage support step, 2-3 is the radial positioning ring, 3-1 is the roller upper and lower end cylinder, 1-2a is the unloading groove structure, 1-2b is the through hole structure, 1-2c is the protruding structure, 1-2d is the end position. DETAILED DESCRIPTION

[0054] The application will be further described below with reference to the drawings and embodiments.

[0055] The embodiment is a roller quick assembly method and a matched opening limiting retainer structure design method, and the technical solution of the application will be described in detail below with reference to the drawings and embodiments.

[0056] The embodiment provides a roller quick assembly tool, which comprises two opening limiting retainers, the opening limiting retainers are used for fixing vertical rollers, an auxiliary base is horizontally arranged at the bottom of the opening limiting retainers in an assembly body, and the auxiliary base is used for assisting the assembly of the rollers on the opening limiting retainers.

[0057] The opening limiting retainer in the embodiment comprises a retainer base body and an opening limiting structure. The retainer base body is a ring structure around the opening limiting retainer, which is used for supporting the opening limiting retainer. The opening limiting structure comprises an unloading groove structure, a through hole structure, a protrusion structure and a terminal part. The upper and lower ends of the roller are clamped into the through hole structure from the protrusion structure through the terminal part.

[0058] The auxiliary base in the embodiment comprises an auxiliary base base step, a retainer support step and a radial positioning ring. The auxiliary base base step is a cylindrical base at the bottom of the auxiliary base. The retainer support step is a disc-shaped support step arranged on the upper layer of the auxiliary base base step. The radial positioning ring is a circular ring arranged on the upper layer of the retainer support step.

[0059] The auxiliary base in the embodiment is internally provided with a circular through hole, and the diameter of the circular through hole is greater than the major diameter of the lead screw. The auxiliary base base step, the retainer support step, the radial positioning ring and the internal circular through hole are coaxial, and the diameter of the circular through hole is greater than the major diameter of the lead screw.

[0060] The diameter of the auxiliary base base step in the embodiment is greater than the diameter of the large end of the nut on the outside.

[0061] The diameter of the retainer support step in the embodiment is equal to the diameter of the opening limiting retainer on the outside.

[0062] The diameter of the radial positioning ring in the embodiment is less than the diameter of the opening limiting retainer on the inside.

[0063] The assembly method of the roller quick assembly tool in the embodiment is as follows:

[0064] Step 1, take the auxiliary base, horizontally place the auxiliary base, horizontally place an opening limiting retainer on the auxiliary base, horizontally downwardly arrange the smooth inner groove of the inner gear ring to make the opening limiting retainer be sleeved into the smooth inner groove of the inner gear ring, and then horizontally downwardly arrange the large end of the nut to make the inner gear ring be sleeved into the smooth inner groove of the nut.

[0065] Step 2, take the inner gear ring, place the smooth inner groove of the inner gear ring horizontally upward and make the inner gear ring fit into the smooth inner groove of the small end of the nut, and then fit an open limiting holder into the smooth inner groove of the inner gear ring;

[0066] Step 3, take a roller, place the roller vertically along the axis and fit the upper and lower ends of the roller into the open limiting structure in the open limiting holder respectively, repeat the above steps until all the rollers are installed in the corresponding positions, and then remove the auxiliary base and assemble the lead screw;

[0067] The embodiment provides a design method of an open limiting holder, including the following steps:

[0068] Step 1, determine the geometric characteristics of the holder base body and the geometric characteristics of the open limiting structure;

[0069] The inner side and the outer side of the holder base body are concentric circles; the open limiting structure is arrayed inside the holder base body around the axis; and the axial thicknesses of the holder base body and the open limiting structure are the same.

[0070] The geometric feature points P1, P2, P3, P4, P5, P6, P7, P8 and P9 represent the axisymmetric basic shape of the open limiting structure; the geometric contour shape of the open limiting structure is a curve segment, wherein the curve segment represents the contour shape of the unloading groove structure, and the curve segment is tangent to the curve segment The contour shape of the through hole structure is a broken line segment is tangent to the straight line segment The contour shape of the convex structure is a straight line segment The contour shape of the end part is a curve segment P1P2 on the inner side of the holder base body, and a straight line segment is tangent to the curve segment .

[0071] The feature points P2, P3, P4, P5, P6, P7 and P9 are chamfered.

[0072] Step 2, determine the characteristic parameter sizes H, R a of the holder base body and the open limiting structure b . c d ,R1,R2,h1,h2,h3,h4,L1,L2; the axial thicknesses of the holder base body and the open limiting structure are H.

[0073] The origin O of the coordinate system of the basic contour shape of the open limiting structure is located at the curve segment of the center of the open limiting structure. ​

[0074] The common center coordinates C1 of the inner and outer circles of the holder base is X c , Y c ; wherein X c = 0, Y c = -R c ; the inner circle diameter is R a , the outer circle diameter is R b , and the number of the axis array around the opening limiting structure is k;

[0075] The radius of the circular arc of the curve segment is R a , and the center coordinates is C1; the coordinates of P1 point is X1, Y1; wherein X1 = 0, Y1 = R a -R c ;

[0076] The coordinates of P2 point is X2, Y2; wherein X2 = h1,

[0077] The radius of the circular arc of the curve segment is R1, the center coordinates is O, and the coordinates of P3 point is X3, Y3; wherein X3 = h1,

[0078] The coordinates of P4 point is X4, Y4; wherein X4 = h2, h2 is the radius of the upper and lower cylindrical of the roller;

[0079] The coordinates of P5 point is X5, Y5; wherein X5 = h3, Y5 = -h4;

[0080] The radius of the circular arc of the curve segment is R d , the center coordinates is C1, and the coordinates of P6 point is X6, Y6; wherein X6 = h2,

[0081] The coordinates of P7 point is X7, Y7; wherein

[0082]

[0083] The radius of the circular arc of the curve segment is R2, the center coordinates is O, and the coordinates of P8 point is X8, Y8; wherein

[0084] The coordinates of P9 point is X9, Y9; wherein

[0085] The fillet radius at P2, P3, P6, P7, P9 is L1, and the fillet radius at P4, P5 is L2;

[0086] H = 5 mm; R a = 15.5 mm; R b = 17.5 mm; R c = 13 mm; R d = 10.5 mm; R1 = 1.8 mm; R2 = 2.75 mm; h1 = 1 mm; h2 = 1.75 mm; h3 = 1.7 mm; h4 = 2.4 mm; L1 = 0.1 mm; L2 = 0.2 mm;

[0087]

[0088] According to the calculation formula of each coordinate point, the coordinates of each point are determined as follows:

[0089] The coordinates of C1 point are X c = 0, Y c = -13 mm;

[0090] The coordinates of P1 point are X1 = 0, Y1 = 2.5 mm;

[0091] The coordinates of P2 point are X2 = 1 mm, Y2 = 2.47 mm;

[0092] The coordinates of P3 point are X3 = 1 mm, Y3 = 1.50 mm;

[0093] The coordinates of P4 point are X4 = 1.75 mm, Y4 = 0.42 mm;

[0094] The coordinates of P5 point are X5 = 1.7 mm, Y5 = -2.4 mm;

[0095] The coordinates of P6 point are X6 = 1.75 mm, Y6 = -2.65 mm;

[0096] The coordinates of P7 point are X7 = 2.47 mm, Y7 = -2.79 mm;

[0097] The coordinates of P8 point are X8 = 2.74 mm, Y8 = -0.29 mm;

[0098] The coordinates of P9 point are X9 = 1.25 mm, Y9 = 2.45 mm;

[0099] Step 3, finite element assembly analysis is performed; the finite element assembly analysis is a finite element simulation analysis of the assembly process of the structure of the upper and lower cylindrical rollers radially clamped into the opening limiting structure by using ABAQUS finite element analysis software according to the target requirement of the roller radially clamped into the opening limiting cage;

[0100] ​Step 4, judging whether the maximum Mises stress in the finite element assembly analysis result exceeds the yield limit of the material, and judging whether the maximum node reaction force in the finite element assembly analysis process exceeds 30N. The maximum Mises stress in the finite element assembly analysis result does not exceed the yield limit of the material, and the maximum node reaction force in the finite element assembly analysis process does not exceed 30N, then the open limit retainer structure design is shaped; if the stress result obtained by the finite element assembly analysis does not meet the requirements, steps 2-3 are repeated until the stress result obtained by the finite element assembly analysis meets the requirements;

[0101] The maximum Mises stress in the finite element assembly analysis result in the embodiment is 726.7Mpa, which is lower than the yield limit of the steel material selected in the embodiment; the maximum node reaction force in the finite element assembly analysis in the embodiment is 11N, which is lower than 30N; therefore, the open limit retainer structure design is shaped. Thus, the structure design of the open limit retainer is completed.

Claims

1. A roller quick assembly tool, comprising an opening limit retainer, an auxiliary base and a roller, characterized in that: The roller quick assembly tooling is characterized in that the opening limit retainer is placed on the auxiliary base, which is horizontally placed at the bottom of the opening limit retainer in the assembly body. There are two opening limit retainers, and the roller is vertically assembled in the opening limit retainer. The outer periphery of the opening limit retainer is a nut, and an inner gear ring is provided at the upper end of the roller between the roller and the inner diameter of the nut; In the roller quick assembly tool, the opening limit retainer includes a retainer base and an opening limit structure. The retainer base is an annular structure. The inner diameter of the retainer base is provided with a plurality of evenly distributed opening limit structures. The opening limit structures are symmetrical structures. Each opening limit structure includes a symmetrical unloading groove structure, a through-hole structure, a protrusion structure and an end portion. The two groups of unloading groove structures, through-hole structures, protrusion structures and the end portion form a snap fit. The cylinders at the upper and lower ends of the roller are inserted into the through-hole structure from the protrusion structure through the end portion. The steps of structural design of the opening limit structure are: Step 1: Determine the geometric features of the retainer base and the opening limit structure; The inner and outer contours of the retainer base are concentric circles; the opening limit structure is arranged around the axis inside the retainer base; The axial thickness of the cage base and the opening limiting structure is the same; The geometric characteristic points of the axisymmetric shape of the opening limit structure are P1, P2, P3, P4, P5, P6, P7, P8, and P9 respectively; the geometric contour shape of the opening limit structure is a curve segment, wherein the curve segment Represents the contour shape of the unloading chute structure, the curve segment With curve segment Represents the outline shape of the through-hole structure, a broken line segment With straight line segment Represents the contour shape of the raised structure, straight line segment Represents the contour shape of the end part; curved segment On the inner circle of the retainer base, the straight line segment With curve segment tangent; The feature points P2, P3, P4, P5, P6, P7, and P9 have rounded corners; Step 2: Determine the characteristic parameters and dimensions H, R of the retainer base and opening limit structure a ,R b ,R c ,R d , R1, R2, h1, h2, h3, h4, L1, L2; the axial thickness of the retainer base and the opening limiting structure is H; The coordinate system origin O of the basic outline shape of the opening limiting structure is located on the curve segment of the symmetry axis of the opening limiting structure. Center of the circle; The common center coordinate C1 of the inner circle and outer circle of the retaining frame base is X c , Y c ; where X c =0, Y c =-R c ; The inner circle diameter is R a , the outer circle diameter is R b , the number of arrays of the opening limiting structure around the axis is k; Curve segment The arc radius is R a , the coordinates of the circle center are C1; the coordinates of point P1 are X1, Y1; where X1=0, Y1=R a -R c ; The coordinates of point P2 are X2, Y2; where X2 = h1, Curve segment The arc radius is R1, the center coordinates are O, and the coordinates of point P3 are X3, Y3; where X3 = h1, The coordinates of point P4 are X4, Y4; where X4 = h2, h2 is the radius of the cylinder at the upper and lower ends of the roller; The coordinates of point P5 are X5, Y5; where X5 = h3, Y5 = -h4; Curve segment The arc radius is R d , the coordinates of the circle center are C1, and the coordinates of point P6 are X6, Y6; where X6 = h2, The coordinates of point P7 are X7, Y7; Curve segment The arc radius is R2, the center coordinates are O, and the coordinates of point P8 are X8, Y8; The coordinates of point P9 are X9, Y9; The fillet radius at P2, P3, P6, P7, and P9 is L1, and the fillet radius at P4 and P5 is L2; Step 3, perform finite element assembly analysis; Finite element assembly analysis is based on the target requirement of the roller being radially inserted into the open limit cage. The finite element analysis software ABAQUS is used to simulate the assembly process of the roller's upper and lower cylinders being radially inserted into the open limit structure. Step 4: Determine whether the stress results obtained from the finite element assembly analysis meet the design requirements. The design requirements are that the maximum Mises stress in the finite element assembly analysis results does not exceed the yield limit of the material, and the maximum node reaction force during the finite element assembly analysis process does not exceed 30N. When the stress results obtained from the finite element assembly analysis meet the design requirements, the opening limit retainer structure design is completed; If the stress results obtained by the finite element assembly analysis do not meet the requirements, repeat steps 2-3 until the stress results obtained by the finite element assembly analysis meet the design requirements; At this point, the structural design of the opening limit retainer is completed.

2. The roller quick assembly tool according to claim 1, characterized in that: In the roller quick assembly tooling, the auxiliary base includes an auxiliary base base step, a retaining frame support step and a radial positioning ring. The auxiliary base base step is a cylindrical base at the bottom inner of the auxiliary base; the retaining frame support step is a disc-shaped support step arranged on the upper layer of the auxiliary base base step; and the radial positioning ring is a circular ring arranged on the upper layer of the retaining frame support step.

3. The roller quick assembly tool according to claim 2, characterized in that: In the roller quick assembly tool, a circular through hole is provided in the center of the auxiliary base, the circular through hole is larger than the major diameter of the screw, and the auxiliary base base step, the retaining frame support step, and the radial positioning ring are coaxial with the circular through hole.

4. The roller quick assembly tool according to claim 2, characterized in that: In the roller quick assembly tool, the diameter of the auxiliary base step is larger than the diameter of the outer large end of the nut.

5. The roller quick assembly tool according to claim 2, characterized in that: In the roller quick assembly tool, the diameter of the retainer support step is equal to the outer diameter of the opening limit retainer.

6. The roller quick assembly tool according to claim 2, characterized in that: In the roller quick assembly tool, the diameter of the radial positioning ring is smaller than the inner diameter of the opening limit retainer.

7. An assembly method using the roller quick assembly tool according to any one of claims 1 to 6, characterized in that The steps include: Step 1: Take the auxiliary base, place it horizontally, and place an opening limit retainer horizontally on the auxiliary base. Then, push the smooth inner groove of the inner gear ring downward horizontally so that the opening limit retainer is inserted into the smooth inner groove of the inner gear ring. Then, put the large end of the nut horizontally downward so that the inner gear ring is inserted into the smooth inner groove of the nut. Step 2: Take the inner gear ring, turn the smooth inner groove of the inner gear ring upward and insert the inner gear ring into the smooth inner groove of the small end of the nut, and then insert an open limit retainer into the smooth inner groove of the inner gear ring; Step 3. Take a roller, place it vertically along the axis, and insert the cylinders at the upper and lower ends of the roller into the opening limit structure in the opening limit holder respectively. Repeat the installation of the rollers until all the rollers are installed at the corresponding positions of the rollers, then remove the auxiliary base and assemble the screw.

Images