Flower disc positioning reference adjustable device

Abstract

The utility model relates to an adjustable positioning reference for a faceplate workbench of mechanical manufacturing equipment. The utility model particularly relates to a disc chuck positioning reference adjustable device. For the positioning of parts with large size difference and small batch, the working efficiency and the positioning precision of a chuck and equal-height block positioning mode are low, and during operation, according to different positioning base planes of the parts, manual measurement and adjustment of an auxiliary positioning piece are prone to displacement in the fastening process. The device is fastened on the faceplate workbench, so that the auxiliary positioning piece can be accurately adjusted, accurate positioning of the device can be realized, and the positioning accuracy and the working efficiency can be effectively improved in the machining process of multiple varieties and small batches of workpieces. The positioning block is composed of a positioning block basic part, a GB / T70.1 M24 * 60 screw, a T-shaped nut, a positioning pin, a self-made double-end stud and an auxiliary positioning part. And the positioning block basic part is limited and fastened by using the positioning pin and the fastener. And the auxiliary positioning piece can be adjusted to a required position for fastening and positioning.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for accurately adjusting auxiliary positioning reference in mechanical manufacturing, and the device is suitable for vertical or horizontal lathe equipment or various boring and milling machining center workbenches of large-size disc, in particular to a disc positioning reference adjustable device. BACKGROUND

[0002] In the prior art, a workpiece is clamped on a disc, and a traditional method one is that the workpiece is directly pasted with a flat clamp jaw, and the clamp jaw is used as a positioning surface, since the clamp jaw itself has manufacturing errors and is seriously worn locally after long-term use, and is affected by clamping force, the positioning surface also changes with the change of the clamping force, the positioning error is large, and the positioning surface cannot be used as a precision reference, and is only suitable for semi-precision machining, and is limited by the shape of a processed product, and the method is only suitable for clamping; a method two is that an auxiliary positioning piece, a self-made double-end stud and a T-shaped female are used to position the workpiece, the positioning surface can be ensured to be accurate in initial use, but adjustment is complicated, since the size of a positioning surface of a processed workpiece is limited, a machine tool cutter needs to be adjusted to a positioning range required by the positioning surface, and the cutter tip is used as a reference for adjustment, in the fastening process, the auxiliary positioning piece is easily displaced due to the influence of the fastening force direction, and needs to be repeatedly adjusted, the auxiliary positioning piece is quenched material, and is frequently in hard contact with a cast iron workbench, local serious wear of the workbench is caused, and the positioning accuracy is also reduced; the above two methods cannot provide long-term effective and reliable high-precision positioning guarantee. SUMMARY

[0003] The utility model aims at: in order to have high positioning accuracy and repeat positioning accuracy of a positioning surface in processing multiple varieties of small batch same type products, improve product quality, and effectively reduce auxiliary time.

[0004] The utility model aims at: through the following technical schemes.

[0005] The design data of the positioning block base piece 1 is determined according to the measured size of the face plate, and the positioning block base piece 1 is manufactured through quenching and tempering, milling, drilling and grinding in sequence, and a plurality of threaded hole positions are distributed on the positioning block base piece 1, and the lower surface of the positioning block base piece 1 is in the shape of a boss, and the boss can be matched with a T-shaped groove of the face plate, and a positioning pin hole and two bolt through holes are arranged on the boss. After the positioning pin 4 and the positioning block base piece 1 are installed on the face plate, the positioning pin 4 and the positioning block base piece 1 are fastened by the screw 2 and the T-shaped nut 3, the auxiliary positioning piece 5 is connected and fastened to the positioning block base piece 1 by the self-made double-headed stud 6, and the auxiliary positioning piece 5 can be installed at different threaded hole positions on the positioning block base piece 1, so that the positioning purpose of workpieces with different diameters is achieved, and the auxiliary positioning piece 5 with different heights or shapes can be replaced according to the characteristics of the workpieces, and the adjustable performance is suitable for fine positioning of various parts with different diameters. The face plate positioning reference adjustable device can be widely applied to a face plate workbench of a vertical turning, boring and drilling combined machining center. After installation is completed, the positioning surface is precisely milled, the flatness error of the four positioning block base pieces 1 in the same plane is less than 0.003 mm, and the surface roughness is Ra1.6, so that the use requirement of the positioning reference surface is met.

[0006] The beneficial effects of the face plate positioning reference adjustable device are mainly as follows:

[0007] The installation and adjustment are quick and convenient, the device is more suitable for different types of parts, the positioning is accurate and stable, the auxiliary positioning piece can be quickly and accurately adjusted, and the auxiliary time is greatly shortened. The error of the positioning surface of the same auxiliary positioning piece installed on different positioning block base pieces is less than 0.003 mm. After the same four auxiliary positioning pieces of the same specification are installed on the positioning block base pieces, the error of the positioning surface of the auxiliary positioning pieces is less than 0.005 mm. The above values are repeatedly verified by using a dial gauge after a period of use, and the position degree of the processed products meets or is higher than the design requirement after three-coordinate detection, so that the device fully meets the original design intention. BRIEF DESCRIPTION OF DRAWINGS

[0008] The drawings constituting the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute an improper limitation on the utility model. In the drawings:

[0009] Figure 1 It is an engineering structure diagram of the face plate positioning reference adjustable device of the utility model;

[0010] Figure 2 It is a three-dimensional assembly drawing of the face plate positioning reference adjustable device of the utility model;

[0011] Figure 3 It is a three-dimensional exploded view of the face plate positioning reference adjustable device of the utility model;

[0012] Figure 4 It is a part engineering drawing of the positioning block base piece of the utility model;

[0013] Figure 5 For the application example of the utility model;

[0014] In the figure: 1, positioning block base piece, 2, GB / T70.1 M24*60 screw, 3, T-shaped female, 4, positioning pin, 5, auxiliary positioning piece, 6, self-made stud. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be described in a complete and clear manner in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all.

[0016] As shown in Figure 1 , Figure 2 , Figure 3 The flower disc positioning reference adjustable device is composed of a positioning block base, a GB / T70.1 M24*60 screw, a T-shaped female, a positioning pin 4, an auxiliary positioning piece and a self-made stud.

[0017] First, the positioning pin is placed in the pin hole of the flower disc workbench, and the positioning block base piece is aligned with the pin hole and placed on the flower disc working surface along the T-shaped groove. The positioning pin, the key and the flower disc are in close clearance fit, and they are fastened by the screw and the T-shaped female. According to the above operation steps, the remaining three sets of positioning block base pieces are assembled in turn. The auxiliary positioning piece and the self-made stud can be freely adjusted in each bolt hole according to the shape of the part to be machined.

[0018] As shown in Figure 4 The upper surface of the positioning block base piece is distributed with a plurality of threaded hole positions, and the lower surface is in the form of a boss, which can cooperate with the T-shaped groove of the flower disc, and is provided with a positioning pin hole and two bolt through holes. Each threaded hole position distributed can be used as the installation and adjustment of the auxiliary positioning piece.

[0019] As shown in Figure 5 The workpiece is placed on the flower disc positioning reference adjustable device, and the adjustability can adapt to various parts with different diameters and ensure the parallel precision of workpiece machining. Different height workpieces can meet the positioning requirements by replacing the auxiliary positioning piece.

[0020] The utility model installs on the faceplate workbench, first use before, first use face milling cutter to carry out semi-finishing of four positioning block basic piece positioning plane, then process bolt hole, blank position prefabricated bolt hole in the position required by the positioning plane, finally, finish the positioning base surface again, to guarantee the common flatness and roughness requirement of four positioning block basic piece.

[0021] It should be understood that the above detailed description of the technical solutions of the utility model by means of the preferred embodiments is illustrative rather than restrictive. Those skilled in the art can modify the technical solutions recorded in the embodiments or make equivalent substitutions for some of the technical features on the basis of reading the description of the utility model, and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An adjustable positioning reference device for a flower plate, characterized in that: Positioning block base (1), GB / T70.1 M24*60 screw (2), T female (3), positioning pin (4), auxiliary positioning part (5), self-made double-headed stud (6) are composed of; Four positioning block bases (1) are evenly distributed at 90° on the chuck table, each positioning block base (1) is limited by a positioning pin (4) to prevent being thrown out due to high-speed rotation of the workbench, and two GB / T70.1 M24*60 screws (2) and T female (3) are used to fasten it on the chuck table.

2. The adjustable positioning reference of a faceplate according to claim 1, characterized in that: The positioning base surfaces of the four positioning block bases (1) evenly distributed on the workbench are in the same plane, the flatness error is less than 0.005mm, the surface roughness is Ra1.6, a plurality of threaded hole positions are distributed on the positioning base surface of the positioning block base (1), all with the center of the chuck table rotary center as the center, the positioning error in the same pitch circle is 0.1mm, the threaded hole position can be adjusted according to the required machining part diameter range, the positioning accuracy of the workpiece is accurate and fast, and the hole position is reserved for the later expansion of various part positioning.

3. The adjustable positioning reference of a faceplate according to claim 1, wherein: The auxiliary positioning part (5) is fastened with the threaded hole on the positioning block base (1) by using the self-made double-headed stud (6), and different height or shape auxiliary positioning parts (5) can be replaced according to the characteristics of various workpieces, or the positioning base surface of the positioning block base (1) can be directly used as the positioning reference, which can meet the requirements of adjusting the axial and radial directions of the workpiece together or separately, and the adjustable performance is suitable for fine positioning of various diameter parts.

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