CN219582224U

CN219582224U - Numerical control boring one-sequence clamp for support beam of railway carriage

Info

Publication number: CN219582224U
Application number: CN202320460337.5U
Authority: CN
Inventors: 周鹏
Original assignee: Jinzhou Jietong Railway Machinery Co ltd
Current assignee: Jinzhou Jietong Railway Machinery Co ltd
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-08-25
Anticipated expiration: 2033-03-13

Abstract

The utility model relates to a numerical control boring sequential fixture for a support beam of a railway carriage, which comprises the following components: the bottom plate is a rectangular plate, the length of the bottom plate is larger than the length value of the workpiece, and the bottom plate extends to two sides of the outside of the boring machine workbench; the locating pins are arranged on the bottom plate and correspond to two precast holes on the bottom wall of the beam frame at two ends of the workpiece, and are at least partially inserted into the precast holes for locating; the horizontal support column and the two positioning pins form three-point horizontal positioning on the bottom of the workpiece, and the horizontal support column is fixed on the bottom plate; the pressing plate groups are three groups and respectively correspond to the two positioning pins and the horizontal support column to clamp the workpiece. The workpiece blank pre-cast holes are utilized to position two pins of the workpiece, then the workpiece level is determined at three points of the horizontal plane, a plurality of pressing plates compress the workpiece, and the four surfaces of the workpiece are respectively processed by utilizing the rotation of the numerical control boring workbench, so that the multi-sequence clamping time is shortened, and the clamping error of repeated clamping is also reduced.

Description

Numerical control boring one-sequence clamp for support beam of railway carriage

Technical Field

The utility model relates to the technical field of rail locomotive component machining, in particular to a numerical control boring one-sequence fixture for a rail bus supporting beam.

Background

The railway carriage bogie has the functions of supporting the railway carriage body, reducing the vibration of the railway train body and improving the running stability of the railway train. The main function of the railway carriage supporting beam is to support the carriage body, convert the rolling of the wheel pair along the steel rail into the translation of the carriage body, bear the weight of the carriage body and transmit the acting force. The total length of the support beam workpiece of the railway carriage is 2130mm, the support beam workpiece is a hollow thin-wall part, the processing surfaces in the numerical control boring sequence are more, the support beam workpiece is mainly distributed on the front side surface and the rear side surface which are opposite to the support beam, the form and position tolerance and the linear dimensional tolerance are smaller, and the processing difficulty is high. The processing difficulty is as follows: the total length of the workpiece is longer, the stroke of common equipment is insufficient, the workpiece is easy to deform in the process of machining the thin-wall workpiece, the width of the workpiece is 22mm, the length of a side groove is 218mm, and the workpiece cannot be machined by a conventional machining method.

And in the processing process of the railway carriage supporting beam, the railway carriage supporting beam needs to be positioned on an operation platform of the numerical control machine. The traditional rail bus supporting beam positioning mode is as follows: firstly, determining and correcting a datum line of the railway carriage supporting beam through manual scribing, then supporting the railway carriage supporting beam on a numerical control machine tool operating table by using a plurality of sizing blocks, finally fastening bolts on the numerical control machine tool operating table, and clamping and fixing the railway carriage supporting beam by using a pressing plate connected with the bolts. The traditional positioning operation of the support beam of the railway carriage is complex, time and labor are wasted, and the processing efficiency is low; and the clamping structure for clamping the support beam of the railway carriage by the pressing plate through the fastening bolt is not firm, so that the processing of the support beam of the railway carriage is inaccurate, and the product percent of pass is low.

Therefore, how to provide a numerical control boring and sequencing fixture for a support beam of a railway carriage is a problem which needs to be solved by a person skilled in the art.

Disclosure of Invention

Therefore, the utility model aims to provide a numerical control boring one-step clamp for a support beam of a railway carriage, which solves the problems in the existing one-step positioning mode of the numerical control boring of the support beam.

The utility model provides a numerical control boring sequential fixture for a support beam of a railway carriage, which comprises the following components:

the bottom plate is a rectangular plate, the length of the bottom plate is larger than the length value of the workpiece, and the bottom plate extends to two sides of the outside of the boring machine workbench;

the locating pins are arranged on the bottom plate and correspond to two precast holes on the bottom wall of the beam frame at two ends of the workpiece, and are at least partially inserted into the precast holes for locating;

the horizontal support columns and the two positioning pins form three-point horizontal positioning on the bottom of the workpiece, and the horizontal support columns are fixed on the bottom plate;

the pressing plate groups are three groups, and correspond to the two positioning pins and the horizontal support column respectively to clamp the workpiece.

Further, two groups of extension rib plates are arranged at two sides of the bottom plate opposite to the boring machine workbench T.

Further, each group of the extension rib plates is triangular.

Further, a pair of auxiliary supports are symmetrically arranged on two sides of the horizontal support column, and the auxiliary supports and the horizontal support column are arranged on the same straight line.

Further, each group of auxiliary supports corresponds to one pressing plate group.

Further, the pressing plate group comprises a connecting rod fixed on the bottom plate, and the top of the connecting rod is connected with a pressing plate body.

Further, the bottom plate, the locating pins, the horizontal support columns and the pressing plate group are all made of 45# steel.

Compared with the prior art, the utility model discloses a numerical control boring one-sequence clamp for the support beam of the railway carriage, which is used for positioning two pins of a workpiece by utilizing a workpiece blank precast hole, determining the level of the workpiece by three points of a horizontal plane, compacting the workpiece by a plurality of pressing plates, and respectively processing four surfaces (except the upper surface and the lower surface) of the workpiece by utilizing the rotation of a numerical control boring workbench, so that the time for multi-sequence clamping is shortened, and the clamping error of repeated clamping is reduced. The two pre-cast holes on the bottom surface of the support beam and the two pins of the tool are utilized to position, so that the angle direction of the workpiece can be accurately determined, the accurate horizontal position of the workpiece can be determined by the three-point horizontal supporting points on the tool, and the workpiece alignment time is shortened.

The two auxiliary supports prevent workpieces from resonating with the cutter in the processing process, so that the processing is more stable, the clamping deformation of the workpieces is also prevented, the processing precision of the support beam of the railway carriage is improved, and the product percent of pass is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a structure of a numerical control boring one-sequence fixture for a rail bus support beam, provided by the utility model, assembled with workpieces;

FIG. 2 is a schematic structural view of a numerical control boring one-sequence clamp for a support beam of a railway carriage, which is provided by the utility model;

fig. 3 is a top view of fig. 1.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiment of the utility model discloses a numerical control boring sequence fixture for a support beam of a railway carriage, which is shown in figures 1-3 and comprises the following components:

the bottom plate 1 is a rectangular plate, the length of the bottom plate 1 is larger than the length value of the workpiece, and the bottom plate extends to two sides of the outside of the boring machine workbench T;

the positioning pins 2 are arranged on the bottom plate 1 opposite to two pre-cast holes on the bottom wall of the crank beam frame G2 at two ends of the workpiece G, and are at least partially inserted into the pre-cast holes for positioning;

the horizontal support columns 3 and the two positioning pins 2 form three-point horizontal positioning on the bottom of the workpiece G, and the horizontal support columns 3 are fixed on the bottom plate 1;

the pressing plate groups 4 are three groups, and the two pressing plate groups 4 respectively correspond to the two positioning pins 2 and the horizontal support column 3 to clamp the workpiece G.

According to the utility model, two pins of a workpiece are positioned by utilizing blank pre-cast holes, the workpiece level is determined by three points on a horizontal plane, the workpiece is pressed by three pressing plates, four surfaces are respectively machined by utilizing the rotation of a numerical control boring workbench, and referring to figure 3, the machining is started from the surface of S0 degree to the surface of S90 degrees, the surface of S180 degrees and the surface of S270 degrees, so that the multi-sequence clamping time is shortened, and the clamping error of repeated clamping is reduced.

According to the utility model, the two pre-cast holes on the bottom surface of the support beam and the two pins of the tool are utilized to position, so that the angle direction of the workpiece can be accurately determined, the three-point horizontal support points on the tool can determine the correct horizontal position of the workpiece, and the workpiece alignment time is shortened.

When in use, the utility model is characterized in that: and (5) putting the clamp in a loosening state, and matching the locating pin 2 with the pre-cast hole of the workpiece G to locate the workpiece. The three-point horizontal support column is ensured to contact the blank.

It is worth to say that the existing numerical control boring workbench needs to be modified: the original numerical control boring workbench is 1500mm long and can not process 2130mm long workpieces, the numerical control boring workbench is reformed to 2200mm, and a bottom plate at the top is supported.

Referring to fig. 1, two sets of extension rib plates 11 are arranged at two sides of the bottom plate 1 opposite to the boring machine workbench T, so that the support performance is improved, meanwhile, the boring machine workbench T is positioned (clamped) by the two sets of extension rib plates 11, fixing holes are formed in the bottom plate 1, and the fixing holes are fixed on the boring machine workbench T through bolts.

Advantageously, each group of the extending rib plates 11 is triangular, and the contact surface close to the boring machine workbench T is large, so that the positioning is facilitated.

More advantageously, the horizontal support columns 3 are symmetrically arranged on both sides with a pair of auxiliary supports 5, and are arranged on the same line as the horizontal support columns 3. The two auxiliary supports 5 prevent workpieces from resonating with the cutter in the processing process, so that the processing is more stable, the clamping deformation of the workpieces is also prevented, the processing precision of the support beam of the railway carriage is improved, and the product qualification rate is improved.

In each of the above embodiments, each of the auxiliary supports corresponds to one of the pressing plate groups 4, so as to further increase the degree of pressing the workpiece.

Specifically, the pressing plate group 4 comprises a connecting rod fixed on the bottom plate 1, the top of the connecting rod is connected with a pressing plate body, the top of the connecting rod is threaded, and the pressing plate is pressed through the nut and the cooperation of the connecting rod from the upper side.

Advantageously, the bottom plate 1, the positioning pins 2, the horizontal support columns 3 and the pressing plate set 4 are all made of 45# steel.

The positioning action sequence of the utility model is as follows: 1. two pins are positioned, and three points are horizontally supported (two positioning pins and a horizontal support column 3); 2. adjusting an auxiliary support (the auxiliary support is a screw jack structure, rotating an auxiliary support screw rod, adjusting the proper height and playing a role of an auxiliary support part) and screwing the auxiliary support to prop up the part; 3. the pressing plate compresses tightly.

The utility model has the functions of horizontally positioning and angularly locking the workpiece, and the like, and can clamp and process four sides at one time by rotating the numerical control boring machine workbench respectively, thereby achieving the accurate positioning, reducing repeated clamping errors by one-time clamping, and fully meeting the requirements of form and position tolerance and linear dimension tolerance.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A railway passenger car supporting beam numerical control boring sequence fixture is characterized by comprising:

the bottom plate (1) is a rectangular plate, the length of the bottom plate (1) is larger than the length value of the workpiece, and the bottom plate extends to two sides of the outside of the boring machine workbench (T);

the positioning pins (2) are arranged on the bottom plate (1) opposite to two precast holes on the bottom wall of the crank beam frame (G2) at two ends of the workpiece (G), and the two positioning pins (2) are at least partially inserted into the precast holes for positioning;

the horizontal support columns (3), the horizontal support columns (3) and the two positioning pins (2) form three-point horizontal positioning on the bottom of the workpiece (G), and the horizontal support columns (3) are fixed on the bottom plate (1);

the pressing plate groups (4) are three groups, and the pressing plate groups (4) respectively correspond to the two positioning pins (2) and the horizontal support column (3) to clamp the workpiece (G).

2. The numerical control boring one-sequence clamp for the support beam of the railway carriage according to claim 1 is characterized in that two groups of extension rib plates (11) are arranged at the bottom of the bottom plate (1) at two sides of the boring machine workbench (T).

3. A rail car support beam numerical control boring sequence fixture according to claim 2, characterized in that each set of the extension web (11) is triangular.

4. A rail car support beam numerical control boring jig according to any one of claims 1-3, characterized in that a pair of auxiliary supports (5) are symmetrically arranged on both sides of the horizontal support column (3) and are arranged on the same straight line with the horizontal support column (3).

5. A rail car supporting beam numerical control boring sequence fixture according to claim 4, characterized in that each group of auxiliary supports corresponds to a pressing plate group (4).

6. The numerical control boring sequential fixture for the support beam of the railway carriage according to claim 5, wherein the pressing plate group (4) comprises a connecting rod fixed on the bottom plate (1), and the top of the connecting rod is connected with a pressing plate body.

7. A rail car supporting beam numerical control boring sequential fixture according to any one of claims 1-3, characterized in that the bottom plate (1), the locating pins (2), the horizontal supporting columns (3) and the pressing plate group (4) are all made of 45# steel.