Reshaping and press-fitting two-in-one tool for thrust wheel assembly

Abstract

The utility model discloses a thrust wheel assembly shaping and press-fitting two-in-one tool which acts on a wheel body inner hole and a floating seal chamber of a thrust wheel, is provided with an assembly workbench and comprises a first tool chuck and a second tool chuck, the first tool chuck and the second tool chuck are symmetrically arranged, and the first tool chuck and the second tool chuck are symmetrically arranged. The first tool chuck comprises a push-polish core rod and a tool plate, one side of the tool plate is fastened to one end of the push air cylinder, and a floating seal ring assembly matching face is arranged on the other side of the tool plate in a digging mode. The O-shaped ring and the floating seal ring assembly are installed in a high-precision guiding mode through the push-polish core rod and the copper sleeve at a time, and the problems that the O-shaped ring and the floating seal ring assembly are not installed in place, positioning is difficult, and deformation and distortion are caused are solved. The inner hole size of the copper sleeve is in place through secondary press fitting of a tool, friction between the copper sleeve and the end face of the side cover due to the fact that the copper sleeve is not in place in press fitting is avoided, and advanced friction between the copper sleeve and a fulcrum shaft during wheel body operation is avoided. The working efficiency is improved, the product matching size is increased, and the product service life is comprehensively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining, especially relates to a two-in-one tool for shaping and press-fitting of a carrier wheel assembly. BACKGROUND

[0002] A carrier wheel is a key component of a tracked engineering machine, used to support the weight of the tractor and roll on the guide rail (track link) or track plate surface, and also used to limit the track and prevent lateral slipping. When the tractor turns, the carrier wheel forces the track to slide on the ground. The carrier wheel is often in mud and dust and bears strong impact, so it is required to be reliable in sealing and the rim to be wear-resistant. The function of the carrier wheel is to transmit the weight of the machine group to the ground and roll on the track. In order to prevent derailment, the carrier wheel should also be able to prevent the track from moving laterally relative to it. The carrier wheel is installed on the chassis of a tracked excavator and bulldozer, bearing the weight of the whole machine. In the prior art, the carrier wheel needs to go through two processes. First, the rim of the carrier wheel is clamped with a chuck. During processing, the end face and the rim of the carrier wheel are processed, and then the inner hole and the floating seal chamber of the carrier wheel are processed to complete the first process. In the second process, the processed rim is clamped with a chuck, and the already processed end face is used as a reference end face to position the inner hole with a coaxiality of 0.03mm or less, and then the floating seal chamber and the hole end face and hole chamfer of the unprocessed end of the carrier wheel are processed.

[0003] The existing processing method can meet the machining requirements, but the two processes are complicated, and a magnetic table is needed to position each carrier wheel in each processing process, which is not conducive to batch production and processing. UTILITY MODEL CONTENTS

[0004] The utility model provides a carrier wheel assembly shaping and press-fitting two-in-one tool, and the tool is simple to make, realizes positioning difficulty, floating seal ring skewing and other phenomena, and solves the problems of assembly out of position, side leakage failure, rework, low service life of the copper sleeve, the carrier shaft and the floating seal ring.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a carrier wheel assembly shaping and press-fitting two-in-one tool, which acts on the inner hole of the wheel body and the floating seal chamber of the carrier wheel, and the inner hole of the wheel body is pre-press-fitted with a copper sleeve.

[0006] The tool includes a first tool chuck and a second tool chuck, the first tool chuck and the second tool chuck are symmetrically arranged, the first tool chuck includes a push light core rod and a tool plate, the front end of the push light core rod is provided with a chamfer, one side of the tool plate is fastened with one end of a push cylinder, and the other side of the tool plate is provided with a floating seal ring assembly matching surface. Under the pushing of the cylinder, the push light core rod pushes into the copper sleeve to perform the actions of light pushing and secondary press-fitting, and at the same time, the floating seal ring assembly is accurately sent into the floating seal chamber.

[0007] Further, the floating seal ring assembly mating surface is provided with an O-ring and a floating seal ring.

[0008] Further, the outer diameter of the push light core rod is over-fitted with the copper sleeve.

[0009] Further, an assembly workbench is provided, which is provided with a pressing assembly station for fixing the supporting wheel and a fastening device for fixing the other end of the air cylinder.

[0010] From the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0011] 1. The O-ring and the floating seal ring assembly are installed once by using the high-precision guiding installation of the push light core rod and the copper sleeve, which solves the problems of installation out of position, positioning difficulty, deformation and twisting of the O-ring and the floating seal ring assembly.

[0012] 2. The inner hole size of the copper sleeve is fitted in place by the tooling twice, which avoids the friction between the copper sleeve and the side cover end surface due to the out-of-position pressing of the copper sleeve, avoids the early friction between the copper sleeve and the supporting shaft during the rotation of the wheel body, improves the working efficiency, improves the product fit size, and comprehensively improves the service life of the product.

[0013] 3. The inner hole of the push light copper sleeve is realized to eliminate the ovality. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for purposes of explanation and are not intended to limit the application. In the drawings:

[0015] Figure 1 is a sectional structure schematic view of the utility model;

[0016] Figure 2 is a single-side tooling action structure schematic view of the utility model;

[0017] Figure 3 is a double-side tooling action sectional structure schematic view of the utility model;

[0018] Figure 4 is a second tooling chuck sectional structure schematic view of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0020] EMBODIMENT

[0021] REFERENCEFigure 1 、 Figure 2 、 Figure 3 and Figure 4 The two-in-one tooling for shaping and pressing of the support wheel assembly acts on the inner hole 1 of the wheel body and the floating seal chamber 2 of the support wheel, and comprises a first tooling chuck 3 and a second tooling chuck 4, which are symmetrically arranged, the first tooling chuck 3 comprises a push light core rod 5 and a tooling plate 6, the front end of the push light core rod 5 is provided with a chamfer, one side of the tooling plate 6 is fastened with one end of a push cylinder, and the other side of the tooling plate is provided with a floating seal ring assembly matching surface 7, and the floating seal ring assembly matching surface 7 is placed with an O-ring 9 and a floating seal ring 10.

[0022] The inner hole 1 of the wheel body is pre-press fitted with a copper sleeve 8.

[0023] The outer diameter of the push light core rod 5 is in excess fit with the inner wall of the copper sleeve 8.

[0024] An assembly workbench is arranged, which is provided with a pressing station for fixing the support wheel and a fastening device for fixing the other end of the cylinder.

[0025] During installation, the copper sleeve 8 is first press fitted into the inner hole of the wheel body of the support wheel, and the copper sleeve 8 has two groups and is symmetrically arranged.

[0026] The two-in-one tooling is installed on the assembly tooling table, and the support wheel is rolled to the pressing station of the assembly workbench, at this time, the cylinder is started to push light and press into the O-ring and the floating seal ring, so as to realize the elimination of the ovality of the copper sleeve inner hole by pushing light, and also press the copper sleeve into place for the second time, which avoids the friction between the copper sleeve and the side cover end face due to the misplacement of the copper sleeve during pressing, and avoids the early friction between the copper sleeve and the support shaft during the rotation of the wheel body. The working efficiency is improved, the product matching size is improved, and the product life is improved.

[0027] The O-ring and the floating seal ring assembly are installed once by using the push light core rod and the copper sleeve high-precision guide, which solves the problems of misplacement, positioning difficulty, deformation and distortion of the O-ring and the floating seal ring assembly.

[0028] The pressing can be performed on one side or on both sides simultaneously.

[0029] The tooling manufacturing process is: blanking-rough turning-drilling and tapping-integral quenching and tempering treatment-fine turning-tapping.

Claims

1. A two-in-one tool for shaping and press-fitting a support wheel assembly, the tool acting on a wheel body inner hole (1) and a floating seal chamber (2) of the support wheel, the wheel body inner hole (1) being previously press-fitted with a copper bushing (8), and being provided with an assembly workbench, characterized in that: It includes first tool chuck (3) and second tool chuck (4), first tool chuck (3) and second tool chuck (4) are symmetrically arranged, first tool chuck includes push light core rod (5) and tool plate (6), the outer diameter of push light core rod (5) is too much with the inner wall of copper bush (8) Cooperation, the front end of push light core rod (5) is provided with chamfer, one side of tool plate (6) is fastened with one end of push cylinder, the other side of tool plate is provided with floating seal ring assembly cooperation surface (7).

2. The wheel assembly trim press two-in-one tooling of claim 1, wherein: O-shaped ring (9) and floating seal ring (10) are placed in floating seal ring assembly cooperation surface (7).

3. The wheel assembly trim press two-in-one tooling of claim 1, wherein: The assembly workbench is provided with the pressing assembly station of the fixed supporting wheel and the fastening device for the other end of the cylinder.

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