CN221952333U - Thin-wall workpiece finish turning floating support tool - Google Patents

Abstract

The utility model provides a thin-wall workpiece finish turning floating support tool, and belongs to the technical field of machinery. The tool solves the problems that the supporting effect of the existing tool is poor and the machining precision is affected. This thin wall work piece finish turning floating support frock, including the flange seat, lean on the mountain and rise tight cover, lean on the mountain to link firmly on the flange seat, rise tight cover and wear to establish on the mountain and the outer end that rises tight cover stretches out in the outer terminal surface of mountain, wear to be equipped with actuating mechanism and actuating mechanism in the flange seat and can drive the outer end that rises tight cover and rise, lean on the mountain to link firmly a plurality of floating support jar that enclose to establish in rising tight cover lateral part, floating support jar and flange seat parallel arrangement, floating support jar includes cylinder body and piston rod, the cylinder body links firmly with leaning on the mountain, the outer end of piston rod is used for supplying the work piece to support. The thin-wall workpiece finish turning floating support tool has the advantages of good support effect and difficulty in vibration during machining.

Description

Floating support tooling for finishing thin-walled workpieces

Technical Field

The utility model belongs to the technical field of machinery and relates to a tool, in particular to a floating support tool for fine turning of a thin-walled workpiece.

Background Art

As we all know, thin-walled parts have always had problems such as large deformation during face milling. Specifically, irregular deformation occurs on the end face of the part after rough milling, which not only causes uneven surface milling allowances, but also affects the hole position size and machining flatness on the subsequent processing surface, thereby causing subsequent assembly quality problems. For example, end face deformation causes the assembly surface to not fit evenly, and hole position deviation and position deviation cause the parts to be assembled improperly or cannot be assembled. In order to prevent deformation during surface machining of thin-walled parts in the prior art, the traditional auxiliary support method is generally used, that is, the single-point support and separate locking method. However, due to the limitations of the locking cylinder shape, it is difficult to arrange sufficient and effective support points.

For example, a positioning tool for fine turning of thin-walled bearing rings disclosed in a Chinese patent document (application number: 202121877407.4) includes a base, a disc is provided at one end of the base, and a round rod is provided at the other end coaxially arranged with the disc, the disc is provided with at least three slide grooves extending along its radial direction, a slider is slidably connected in the slide groove, an inner chuck is provided on the slider, a sleeve surrounding all the sliders is provided on the disc, an elastic member is provided between the sleeve and the slider, a truncated cone-shaped adjustment block is provided at the end of the disc facing away from the base, a push rod cylinder is provided in the round rod, the push rod cylinder has a telescopic rod extending from the base and the disc, the end of the telescopic rod is connected to the adjustment block, the adjustment block has a first guide slope, and the inner chuck has a second guide slope matching the first guide slope. However, when the positioning tool is used to position a disc-shaped thin-walled workpiece, the disc portion is not supported, so its support effect is not good, and vibration is easily generated during processing, which affects the processing accuracy.

Summary of the invention

The utility model aims to solve the above problems in the prior art and proposes a floating support tooling for fine turning of thin-walled workpieces, which has good supporting effect on thin-walled workpieces and is not prone to vibration during processing.

The objectives of the utility model can be achieved through the following technical solutions: a floating support tooling for fine turning of thin-walled workpieces, comprising a flange seat, a backrest and a tensioning sleeve, the backrest being fixedly connected to the flange seat, the tensioning sleeve being inserted through the backrest and the outer end of the tensioning sleeve extending out of the outer end surface of the backrest, a driving mechanism being inserted through the flange seat and the driving mechanism being able to drive the outer end of the tensioning sleeve to expand, characterized in that a plurality of floating support cylinders arranged around the side of the tensioning sleeve are fixedly connected to the backrest, the floating support cylinder being arranged parallel to the flange seat, the floating support cylinder comprising a cylinder body and a piston rod, the cylinder body being fixedly connected to the backrest, and the outer end of the piston rod being used for the workpiece to abut against.

The thin-walled workpiece sleeve is arranged on the outside of the tension sleeve and abuts against the backing. The outer end of the tension sleeve is expanded by the driving mechanism to position the thin-walled workpiece. The piston rod of the floating support cylinder extends out and abuts against the end face of the thin-walled workpiece to achieve positioning and support for the thin-walled workpiece. It has good supporting effect, is not easy to generate vibration during processing, and improves processing accuracy.

In the above-mentioned floating support tooling for fine turning of thin-walled workpieces, the driving mechanism includes a pull plate coaxially arranged in a flange seat, the rear end of the pull plate is a pull rod portion, a plurality of sleeves are arranged between the pull plate and the tension sleeve, the sleeves are arranged parallel to the pull rod portion, the two ends of the sleeve are respectively fixedly connected to the inner end of the pull plate and the tension sleeve, a positioning mandrel is fixedly connected to the middle of the backrest, the outer end of the positioning mandrel is an outer cone, the outer end of the tension sleeve has an inner cone and the inner cone can abut against the outer cone. The driving mechanism adopts the above-mentioned pull plate, drives the pull rod portion axially by hydraulic or pneumatic pressure, drives the sleeve and the tension sleeve axially by the pull plate, so that the inner cone squeezes the outer cone to expand the outer end of the tension sleeve, and realizes the positioning of the workpiece. When the workpiece needs to be removed after processing, the pull rod portion can be driven to move in the opposite direction by hydraulic or pneumatic pressure, which has the advantages of good workpiece positioning effect and reliable and stable operation.

In the above-mentioned floating support fixture for fine turning of thin-walled workpieces, as another mode, the inner end of the tension sleeve is fixedly connected to the backer, and the driving mechanism includes a pull rod coaxially arranged in the flange seat, one end of the pull rod has an outer conical surface, and the outer end of the tension sleeve has an inner conical surface and the inner conical surface can abut against the outer conical surface. The above-mentioned arrangement has the advantages of simple structure and reliable operation.

In the above-mentioned floating support fixture for fine turning of thin-walled workpieces, the inner end of the tension sleeve is a disc-shaped connecting portion, and one end of the sleeve is inserted and fixedly connected to the connecting portion. The above-mentioned arrangement has the advantages of stable and reliable structure.

In the above-mentioned floating support tooling for fine turning of thin-walled workpieces, the number of the floating support cylinders is 3-10 and they are evenly arranged around the axis of the backrest. The above-mentioned arrangement has the advantage of good supporting effect.

In the above-mentioned floating support fixture for fine turning of thin-walled workpieces, the middle part of the outer end of the backer has a protruding and truncated cone-shaped limiting part, the limiting part is coaxially arranged with the tension sleeve, and the outer end surface of the limiting part is a limiting surface for the end surface of the workpiece to abut against. By arranging the limiting surface on the outer end surface of the limiting part, the end surface of the thin-walled workpiece is facilitated to abut against, thereby improving the positioning accuracy.

In the above-mentioned floating support fixture for fine turning of thin-walled workpieces, the cylinder body and the backing are fixedly connected by threads. The cylinder body and the backing are fixedly connected by screws, which has the advantages of simple structure and convenient connection.

Compared with the existing technology, this precision turning floating support tooling has the following advantages:

1. The outer end of the tension sleeve is expanded through the driving mechanism to position the thin-walled workpiece. The piston rod of the floating support cylinder extends and abuts against the end surface of the thin-walled workpiece to achieve positioning support for the thin-walled workpiece. It has good supporting effect, is not easy to vibrate during processing, and improves processing accuracy;

2. The pull rod is driven to move axially by hydraulic or pneumatic pressure, and the sleeve and the tension sleeve are driven to move axially by the pull plate, so that the inner cone surface squeezes the outer cone surface and the outer end of the tension sleeve is expanded to achieve the positioning of the workpiece. It has the advantages of good positioning effect of the workpiece and reliable and stable operation;

3. The inner end of the tension sleeve is a disc-shaped connecting part, and one end of the sleeve is inserted and fixedly connected to the connecting part, which has the advantages of stable and reliable structure;

4. The outer end surface of the limiting part is a limiting surface for the end surface of the workpiece to abut against, which is convenient for the end surface of the thin-walled workpiece to abut against and improves the positioning accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional schematic diagram of the floating support fixture for finishing thin-walled workpieces.

FIG. 2 is a schematic front view of the floating support fixture for fine turning of thin-walled workpieces.

FIG3 is a schematic cross-sectional view of the floating support fixture for positioning a workpiece.

FIG. 4 is an exploded schematic diagram of the floating support fixture for finishing thin-walled workpieces.

FIG. 5 is a cross-sectional schematic diagram of another structure of the floating support fixture.

In the figure, 1, flange seat; 2, backrest; 2a, limit part; 2b, limit surface; 3, tension sleeve; 3a, inner cone surface; 3b, connecting part; 4, floating support cylinder; 4a, piston rod; 5, pull plate; 5a, pull rod part; 6, sleeve; 7, positioning mandrel; 8, outer cone surface; 9, pull rod; 10, workpiece.

DETAILED DESCRIPTION

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in Figs. 1 to 4, the floating support tooling for fine turning of thin-walled workpieces comprises a flange seat 1, a backing 2 and a tensioning sleeve 3, wherein the backing 2 is fixedly connected to the flange seat 1, the tensioning sleeve 3 is inserted into the backing 2 and the outer end of the tensioning sleeve 3 extends out of the outer end surface of the backing 2, and the middle of the outer end of the backing 2 has a protruding and truncated cone-shaped limiting portion 2a, the limiting portion 2a is coaxially arranged with the tensioning sleeve 3, and the outer end surface of the limiting portion 2a is a limiting surface 2b for the end surface of the workpiece 10 to abut against. By arranging the limiting surface 2b on the outer end surface of the limiting portion 2a, the end surface of the thin-walled workpiece 10 is facilitated to abut against, thereby improving the positioning accuracy.

A driving mechanism is provided inside the flange seat 1 and can drive the outer end of the tensioning sleeve 3 to expand. The driving mechanism includes a pull plate 5 coaxially arranged in the flange seat 1. The rear end of the pull plate 5 is a pull rod portion 5a. A plurality of sleeves 6 are provided between the pull plate 5 and the tensioning sleeve 3. The sleeves 6 are all arranged parallel to the pull rod portion 5a. The two ends of the sleeves 6 are respectively fixedly connected to the pull plate 5 and the inner end of the tensioning sleeve 3. A positioning core shaft 7 is fixedly connected to the middle part of the backrest 2. The outer end of the positioning core shaft 7 is an outer cone surface 8. The outer end of the tensioning sleeve 3 has an inner cone surface 3a and the inner cone surface 3a can abut against the outer cone surface 8.

A plurality of floating support cylinders 4 are fixedly connected to the backrest 2 and are arranged around the side of the tensioning sleeve 3. The floating support cylinders 4 are arranged parallel to the flange seat 1. The floating support cylinders 4 include a cylinder body and a piston rod 4a. The cylinder body and the backrest 2 are fixedly connected by threads, and have the advantages of simple structure and convenient connection. The outer end of the piston rod 4a is used for the workpiece 10 to abut against.

The inner end of the tension sleeve 3 is a disc-shaped connecting portion 3b, and one end of the sleeve 6 is inserted into and fixedly connected to the connecting portion 3b, which has the advantage of a stable and reliable structure.

The number of floating support cylinders 4 is 3-10 and they are evenly arranged around the axis of the backrest 2, which has the advantage of good support effect. Preferably, the number of floating support cylinders 4 is 6. The specific structure of the floating support cylinder 4 refers to the floating support cylinder in a new hydraulic floating support device (2019221228158), an enhanced hydraulic support cylinder (application number: 2018215495886, and a new hydraulic support cylinder (application number: 2020222952402).

The thin-walled workpiece 10 is sleeved on the outside of the tension sleeve 3 and abuts against the backing 2. The pull rod 5a is driven to move axially by hydraulic or pneumatic pressure, and the sleeve 6 and the tension sleeve 3 are driven to move axially by the pull plate 5, so that the inner cone 3a squeezes the outer cone 8 to expand the outer end of the tension sleeve 3, and then the floating support cylinder 4 works, and its piston rod 4a extends and abuts against the end face of the thin-walled workpiece 10, so as to achieve positioning support for the thin-walled workpiece 10, with good support effect, less vibration during processing, and improved processing accuracy. When the workpiece 10 needs to be removed after processing, the pull rod 5a can be driven to move in the opposite direction by hydraulic or pneumatic pressure, which has the advantages of good positioning effect on the workpiece 10 and reliable and stable operation.

As another way, as shown in Figure 5, the inner end of the tensioning sleeve 3 is fixedly connected to the backrest 2, and the driving mechanism includes a pull rod 9 coaxially arranged inside the flange seat 1, one end of the pull rod 9 has an outer conical surface 8, and the outer end of the tensioning sleeve 3 has an inner conical surface 3a and the inner conical surface 3a can abut against the outer conical surface 8, which has the advantages of simple structure and reliable operation.

The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Although the present invention uses more terms such as flange seat 1, backrest 2, limit part 2a, limit surface 2b, tension sleeve 3, inner cone surface 3a, connecting part 3b, floating support cylinder 4, piston rod 4a, pull plate 5, pull rod part 5a, sleeve 6, positioning mandrel 7, outer cone surface 8, pull rod 9, workpiece 10, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims (7)

1. A floating support tooling for fine turning of thin-walled workpieces, comprising a flange seat (1), a backrest (2) and a tensioning sleeve (3), wherein the backrest (2) is fixedly connected to the flange seat (1), the tensioning sleeve (3) is inserted into the backrest (2) and the outer end of the tensioning sleeve (3) extends out of the outer end surface of the backrest (2), a driving mechanism is inserted into the flange seat (1) and the driving mechanism can drive the outer end of the tensioning sleeve (3) to expand, and is characterized in that a plurality of floating support cylinders (4) are fixedly connected to the backrest (2) and are arranged around the side of the tensioning sleeve (3), the floating support cylinder (4) is arranged parallel to the flange seat (1), the floating support cylinder (4) comprises a cylinder body and a piston rod (4a), the cylinder body is fixedly connected to the backrest (2), and the outer end of the piston rod (4a) is used for the workpiece (10) to abut against. 2. The floating support tooling for fine turning of thin-walled workpieces according to claim 1 is characterized in that the driving mechanism includes a pulling disk (5) coaxially arranged in the flange seat (1), the rear end of the pulling disk (5) is a pulling rod portion (5a), and a plurality of sleeves (6) are arranged between the pulling disk (5) and the tensioning sleeve (3), and the sleeves (6) are all arranged parallel to the pulling rod portion (5a), and the two ends of the sleeve (6) are respectively fixedly connected to the inner end of the pulling disk (5) and the tensioning sleeve (3), and a positioning core shaft (7) is fixedly connected to the middle part of the backrest (2), and the outer end of the positioning core shaft (7) is an outer conical surface (8), and the outer end of the tensioning sleeve (3) has an inner conical surface (3a) and the inner conical surface (3a) can abut against the outer conical surface (8). 3. The floating support tooling for fine turning of thin-walled workpieces according to claim 1 is characterized in that the inner end of the tension sleeve (3) is fixedly connected to the backrest (2), the driving mechanism includes a pull rod (9) coaxially arranged inside the flange seat (1), one end of the pull rod (9) has an outer conical surface (8), the outer end of the tension sleeve (3) has an inner conical surface (3a) and the inner conical surface (3a) can abut against the outer conical surface (8). 4. The floating support fixture for fine turning of thin-walled workpieces according to claim 2 is characterized in that the inner end of the tension sleeve (3) is a disc-shaped connecting portion (3b), and one end of the sleeve (6) is inserted into and fixedly connected to the connecting portion (3b). 5. The floating support tooling for finishing turning thin-walled workpieces according to claim 1 or 2 or 3 or 4 is characterized in that the number of the floating support cylinders (4) is 3-10 and they are evenly arranged with the axis of the backrest (2) as the center. 6. The floating support tooling for fine turning of thin-walled workpieces according to claim 1, 2, 3 or 4 is characterized in that the middle part of the outer end of the backrest (2) has a protruding and truncated cone-shaped limiting portion (2a), the limiting portion (2a) is coaxially arranged with the tension sleeve (3), and the outer end face of the limiting portion (2a) is a limiting face (2b) for the end face of the workpiece (10) to abut against. 7. The floating support fixture for fine turning of thin-walled workpieces according to claim 1, 2, 3 or 4, is characterized in that the cylinder body and the backrest (2) are fixedly connected by threads.