A thin-walled sleeve axial hole turning clamping device

Abstract

The utility model relates to a thin-walled sleeve axial hole turning clamping device, including a clamping body, a step positioning sleeve, a limiting mechanism, etc. The utility model limits a total of five degrees of freedom of the workpiece, belongs to partial positioning, and meets the turning processing requirements of the workpiece. Under the joint action of the step positioning sleeve and the limiting mechanism, effective positioning of the workpiece is achieved, which can greatly reduce the offset of the workpiece, thereby reducing the axial hole processing error and improving the positioning accuracy. It can also reduce the alignment time during the processing, save time and effort, and improve production efficiency. This solution changes the traditional clamping direction from radial clamping to axial clamping, which can effectively prevent the deformation of the workpiece and ensure the processing quality.

Description

Technical Field

[0001] The utility model relates to the technical field of turning processing, in particular to a thin-wall sleeve axial hole turning clamping device. Background Art

[0002] The thin-walled sleeve is a typical thin-walled part, and the difference between its inner and outer diameters is very small. When the axial hole of the thin-walled sleeve is opened by turning, the thin-walled sleeve is easily deformed under the influence of the clamping effect and turning effect. Therefore, compared with the processing of ordinary parts, the requirements for the fixture will be higher.

[0003] However, currently, chucks and other fixtures are generally used to clamp the workpiece to be processed, but the workpiece is not clamped tightly, causing the workpiece to move slightly, resulting in inaccurate positioning of the axial hole processing of the thin-walled sleeve, reducing the processing efficiency. In addition, since the side wall of the thin-walled sleeve is very thin, the clamping effect of ordinary fixtures can easily cause the thin-walled sleeve to deform, making it difficult to ensure the processing quality. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a thin-wall sleeve axial hole turning clamping device to solve the above technical problem.

[0005] The utility model solves the above-mentioned technical problems with a technical solution as follows: a thin-walled sleeve axial hole turning clamping device, comprising: a clamping body, a step positioning sleeve and a limiting mechanism; a through hole is provided inside the clamping body, the step positioning sleeve is inserted into the through hole, and the step positioning sleeve is detachably connected to the clamping body; the limiting mechanism is installed on the clamping body, and the end of the limiting mechanism abuts against the end of a workpiece to be processed inserted into the step positioning sleeve; a first protrusion is provided on the inner wall of the step positioning sleeve at one end away from the limiting mechanism, a notch is provided on the end of the step positioning sleeve away from the limiting mechanism, and a wall hole arranged opposite to the notch is provided on the side wall of the clamping body.

[0006] The beneficial effects of the utility model are as follows: taking the end face of the through hole as the XY plane and the center axis of the through hole as the Z axis, a coordinate system is established for reference. The X-axis rotation, Y-axis rotation, X-axis movement and Y-axis movement of the workpiece are limited by the step positioning sleeve, and the Z-axis movement of the workpiece is limited by the first protrusion and the limiting mechanism, which limits a total of five degrees of freedom of the workpiece, which belongs to partial positioning and meets the turning processing requirements of the workpiece. Under the joint action of the step positioning sleeve and the limiting mechanism, effective positioning of the workpiece is achieved, which can greatly reduce the offset of the workpiece, thereby reducing the axial hole processing error and improving the positioning accuracy. It can also reduce the alignment time during the processing, save time and effort, and improve production efficiency. This solution changes the traditional clamping direction from radial clamping to axial clamping, which can effectively prevent the deformation of the workpiece and ensure the processing quality.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a second protrusion is provided on the inner wall of the clamp body at one end away from the limiting mechanism, and the second protrusion abuts against the end of the step positioning sleeve.

[0009] The beneficial effect of adopting the above further solution is that the second protrusion is used to limit the step positioning sleeve.

[0010] Furthermore, the first protrusion and the second protrusion are both annular structures.

[0011] Furthermore, there are two notches and two wall holes, the two notches are symmetrically arranged with respect to the longitudinal section of the step positioning sleeve along the diameter, and the two wall holes are symmetrically arranged with respect to the longitudinal section of the through hole along the diameter.

[0012] The beneficial effect of adopting the above further solution is that when the workpiece is disassembled, the copper rod can penetrate the clamp body, which is convenient for knocking the workpiece and realizing the rapid removal of the workpiece.

[0013] Furthermore, the outline of the notch coincides with the outline of the wall hole.

[0014] Furthermore, the wall holes are elongated holes.

[0015] The beneficial effect of adopting the above further solution is: a certain space is left to facilitate the movement of the copper rod and to make it easier to achieve the knocking operation.

[0016] Furthermore, the limiting mechanism includes a pressure plate, a supporting screw, a bolt, a gasket and a nut; the end of the pressure plate abuts against the end of the workpiece to be processed which is inserted into the step positioning sleeve, and a sliding groove is provided on the pressure plate; one end of the supporting screw is slidably connected in the sliding groove, and the other end of the supporting screw is connected to the clamping body; the bolt is inserted into the pressure plate, one end of the bolt is connected to the clamping body, and the other end of the bolt is respectively connected to the gasket and the nut.

[0017] The beneficial effects of adopting the above further scheme are: the pressure plate is used to press the workpiece to prevent the workpiece from moving; the support bolts are used to limit the pressure plate to prevent the pressure plate from rotating during use, causing the end of the pressure plate to detach from the workpiece; the bolts, washers and nuts are used to fix the pressure plate.

[0018] Furthermore, the pressing plate is an L-shaped structure.

[0019] Furthermore, two limiting mechanisms are provided, and the two limiting mechanisms are symmetrically arranged with respect to the radial direction of the through hole.

[0020] Furthermore, the step positioning sleeve is connected to the clamp body via a locking screw.

[0021] The beneficial effect of adopting the above further solution is that the locking screw is used to achieve the connection between the step positioning sleeve and the clamp body, thereby preventing the step positioning sleeve from moving or rotating relative to the clamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a thin-walled sleeve axial hole turning clamping device of the utility model;

[0023] Figure 2 The utility model is a side sectional view of a thin-wall sleeve axial hole turning clamping device.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Clamp body; 2. Step positioning sleeve; 3. Workpiece; 4. First protrusion; 5. Wall hole; 6. Second protrusion; 7. Press plate; 8. Support screw; 9. Bolt; 10. Washer; 11. Nut; 12. Slide groove; 13. Locking screw. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a thin-walled sleeve axial hole turning clamping device, including: a clamping body 1, a step positioning sleeve 2 and a limiting mechanism; a through hole is opened inside the clamping body 1, the step positioning sleeve 2 is inserted into the through hole, and the step positioning sleeve 2 is detachably connected to the clamping body 1; the limiting mechanism is installed on the clamping body 1, and the end of the limiting mechanism is abutted against the end of the workpiece 3 to be processed inserted in the step positioning sleeve 2; a first protrusion 4 is provided on the inner wall of the step positioning sleeve 2 at one end away from the limiting mechanism, a notch is opened on the end of the step positioning sleeve 2 away from the limiting mechanism, and a wall hole 5 arranged opposite to the notch is opened on the side wall of the clamping body 1.

[0028] Specifically, the through hole of the clamp body 1 is opened at the center of the clamp body 1, and the central axis of the through hole coincides with the central axis of the clamp body 1. The step positioning sleeve 2 is a sleeve-type structure, and the inner diameter of the step positioning sleeve 2 is approximately equal to the outer diameter of the workpiece 3 to be processed, so as to achieve a close fit between the step positioning sleeve 2 and the workpiece 3.

[0029] The end face of the through hole is taken as the XY plane, and the central axis of the through hole is taken as the Z axis, and a coordinate system is established for reference. The X-axis rotation, Y-axis rotation, X-axis movement, and Y-axis movement of the workpiece 3 are limited by the step positioning sleeve 2, and the Z-axis movement of the workpiece 3 is limited by the first protrusion 4 and the limit mechanism, which limits the five degrees of freedom of the workpiece 3 in total, which belongs to partial positioning and meets the turning processing requirements of the workpiece 3.

[0030] Under the joint action of the step positioning sleeve 2 and the limit mechanism, the workpiece 3 is effectively positioned, which can greatly reduce the deviation of the workpiece 3, thereby reducing the axial hole processing error and improving the positioning accuracy. It can also reduce the alignment time during the processing, save time and effort, and improve production efficiency. This solution changes the traditional clamping direction from radial clamping to axial clamping, which can effectively prevent the deformation of the workpiece 3 and ensure the processing quality.

[0031] Optionally, in the embodiment, a second protrusion 6 is provided on the inner wall of the clamp body 1 at one end away from the limiting mechanism, and the second protrusion 6 abuts against the end of the step positioning sleeve 2. The second protrusion 6 is used to limit the step positioning sleeve 2.

[0032] Optionally, in an embodiment, the first protrusion 4 and the second protrusion 6 are both annular structures.

[0033] In actual processing, the step locating sleeve 2 and the first protrusion 4 are an integral structure, and the clamp body 1 and the second protrusion 6 are an integral structure. When the through hole is opened, the through hole is divided into two sections, and the diameter of one section for passing the step locating sleeve 2 is approximately equal to the outer diameter of the step locating sleeve 2, and the length is approximately equal to the length of the step locating sleeve 2, so as to achieve the matching with the step locating sleeve 2. The diameter of the other section is smaller than the outer diameter of the step locating sleeve 2, thereby forming the second protrusion 6 to achieve the limiting effect on the step locating sleeve 2.

[0034] Optionally, in an embodiment, there are two notches and two wall holes 5 , the two notches are symmetrically arranged with respect to the longitudinal section along the diameter of the step positioning sleeve 2 , and the two wall holes 5 are symmetrically arranged with respect to the longitudinal section along the diameter of the through hole.

[0035] When the workpiece 3 is disassembled, the copper rod can penetrate the clamp body 1, so as to facilitate the knocking operation on the workpiece 3 and realize the rapid removal of the workpiece 3.

[0036] Optionally, in an embodiment, the outline of the notch coincides with the outline of the wall hole 5 .

[0037] Optionally, in the embodiment, the wall hole 5 is a long hole, leaving a certain space to facilitate the movement of the copper rod and to more easily realize the knocking operation.

[0038] Optionally, in an embodiment, the limiting mechanism includes a pressure plate 7, a support screw 8, a bolt 9, a gasket 10 and a nut 11; the end of the pressure plate 7 is abutted against the end of the workpiece 3 to be processed that is inserted into the step positioning sleeve 2, and a slide groove 12 is provided on the pressure plate 7; one end of the support screw 8 is slidably connected in the slide groove 12, and the other end of the support screw 8 is connected to the clamp body 1; the bolt 9 is inserted into the pressure plate 7, one end of the bolt 9 is connected to the clamp body 1, and the other end of the bolt 9 is respectively connected to the gasket 10 and the nut 11.

[0039] The pressure plate 7 is used to press the workpiece 3 to prevent the workpiece 3 from moving; the support bolts 9 are used to limit the pressure plate 7 to prevent the pressure plate 7 from rotating during use, causing the end of the pressure plate 7 to separate from the workpiece 3; the bolts 9, gaskets 10 and nuts 11 are used to fix the pressure plate 7.

[0040] Optionally, in an embodiment, the pressing plate 7 is an L-shaped structure.

[0041] Optionally, in an embodiment, two limiting mechanisms are provided, and the two limiting mechanisms are symmetrically arranged with respect to the radial direction of the through hole.

[0042] Optionally, in an embodiment, the step positioning sleeve 2 is connected to the clamp body 1 via a locking screw 13 .

[0043] The locking screw 13 is used to realize the connection between the step positioning sleeve 2 and the clamp body 1, and prevent the step positioning sleeve 2 from moving or rotating relative to the clamp body 1. The detachable connection between the step positioning sleeve 2 and the clamp body 1 can also be realized by locking bolts 9, block positioning, etc.

[0044] Working principle: When clamping the workpiece 3, first install the step locating sleeve 2 in the clamp body 1. During the installation process, a copper rod can be used to knock the end of the step locating sleeve 2 so that the step locating sleeve 2 and the clamp body 1 are fully matched. After the step locating sleeve 2 is fully installed in the clamp body 1, one end of the step locating sleeve 2 abuts against the second protrusion 6, and the end face of the other end of the step locating sleeve 2 is flush with the end face of the clamp body 1. Then tighten the locking screw 13 to fix the step locating sleeve 2 and the clamp body 1 together to prevent the step locating sleeve 2 from rotating or moving. Install the workpiece 3 to be processed in the step locating sleeve 2. During the installation process, a copper rod can be used to knock the end of the workpiece 3 so that the workpiece 3 and the step locating sleeve 2 are fully matched. After the workpiece 3 is fully installed in the step locating sleeve 2, one end of the workpiece 3 abuts against the first protrusion 4, and the end face of the other end of the workpiece 3 is flush with the end face of the step locating sleeve 2. Finally, adjust the pressing plate 7 so that the end of the pressing plate 7 abuts against the end face of the workpiece 3. It should be noted that the position of the pressing plate 7 should not affect the opening of the axial hole. Tighten the nut 11 to fix the position of the pressing plate 7, and complete the clamping of the workpiece 3.

[0045] When disassembling the workpiece 3, loosen the nut 11 and remove the pressing plate 7. Then, insert the copper rod into the wall hole 5 and the notch, and knock the end of the thin-walled sleeve with the copper rod, so that the thin-walled sleeve is removed from the step positioning sleeve 2. This method saves time and effort, and will not damage the thin-walled sleeve.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A thin-walled sleeve axial hole turning clamping device, characterized in that: include: A clamping body (1), a step positioning sleeve (2) and a limiting mechanism; A through hole is provided inside the clamp body (1), the step positioning sleeve (2) is inserted into the through hole, and the step positioning sleeve (2) is detachably connected to the clamp body (1); the limiting mechanism is installed on the clamp body (1), and the end of the limiting mechanism abuts against the end of the workpiece (3) to be processed inserted in the step positioning sleeve (2); a first protrusion (4) is provided on the inner wall of the end of the step positioning sleeve (2) away from the limiting mechanism, a notch is provided on the end of the step positioning sleeve (2) away from the limiting mechanism, and a wall hole (5) arranged opposite to the notch is provided on the side wall of the clamp body (1).

2. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: A second protrusion (6) is provided on the inner wall of the clamp body (1) at one end away from the limiting mechanism, and the second protrusion (6) abuts against the end of the step positioning sleeve (2).

3. A thin-walled sleeve axial hole turning clamping device according to claim 2, characterized in that: The first protrusion (4) and the second protrusion (6) are both annular structures.

4. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: There are two notches and two wall holes (5), the two notches are symmetrically arranged with respect to the longitudinal section of the step positioning sleeve (2), and the two wall holes (5) are symmetrically arranged with respect to the longitudinal section of the through hole.

5. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: The contour of the notch coincides with the contour of the wall hole (5).

6. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: The wall hole (5) is a long hole.

7. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: The limiting mechanism comprises a pressing plate (7), a supporting screw (8), a bolt (9), a gasket (10) and a nut (11); the end of the pressing plate (7) abuts against the end of the workpiece (3) to be processed which is inserted into the step positioning sleeve (2), and a sliding groove (12) is provided on the pressing plate (7); one end of the supporting screw (8) is slidably connected in the sliding groove (12), and the other end of the supporting screw (8) is connected to the clamp body (1); the bolt (9) is inserted into the pressing plate (7), one end of the bolt (9) is connected to the clamp body (1), and the other end of the bolt (9) is respectively connected to the gasket (10) and the nut (11).

8. A thin-walled sleeve axial hole turning clamping device according to claim 7, characterized in that: The pressing plate (7) is an L-shaped structure.

9. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: Two limiting mechanisms are provided, and the two limiting mechanisms are symmetrically arranged with respect to the radial direction of the through hole.

10. A thin-walled sleeve axial hole turning clamping device according to claim 1, characterized in that: The step positioning sleeve (2) is connected to the clamp body (1) via a locking screw (13).

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