Clamping device and clamping method thereof

Abstract

The invention relates to a clamping device and a clamping method thereof. The clamping device is used for clamping the annular thin-wall part so as to install the annular thin-wall part on a lathe, and comprises a supporting base, an annular installation groove is formed in the edge of the supporting base, and the installation groove is used for installing a protruding part of the annular thin-wall part; and the limiting baffle is arranged on one side of the supporting base, and the edge of the limiting baffle can abut against the inner flange of the annular thin-wall part so that the inner flange can be arranged on the supporting base in a pressed mode. Thus, the annular thin-wall part is fixed to the supporting base through the limiting baffle, the upper surface of the inner flange is attached to the limiting baffle, the lower surface of the inner flange is attached to the supporting base, and reliable clamping and fixing of the annular thin-wall part are achieved. When the turning tool is used for turning the annular thin-wall part, the annular thin-wall part can be prevented from deforming due to counter-acting force during machining, the requirement for the flatness of the annular thin-wall part is met, and the machining quality of the annular thin-wall part is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of turning fixtures, and in particular to a clamping device and a clamping method thereof. Background Art

[0002] Annular thin-walled parts are widely used in various types of equipment. For example, annular thin-walled parts are important parts of vacuum interrupters. For large-sized annular thin-walled parts, their diameter is large and the wall thickness is thin. Generally, annular grooves need to be processed on the annular thin-walled parts to meet actual use requirements.

[0003] Usually, a lathe is used to turn annular thin-walled parts to form an annular groove. However, the wall thickness of annular thin-walled parts is relatively thin. If the three-jaw chuck of the lathe is used to directly clamp the annular thin-walled parts, if the supporting force is slightly too large, it is easy to cause the annular thin-walled parts to deform, and if the supporting force is too small, the annular thin-walled parts will fall off.

[0004] At present, bakelite support plates are used to fix annular thin-walled parts to three-jaw chucks. After the annular thin-walled parts are prevented from being put on the bakelite support plate, the boss size of the bakelite support plate is matched with the inner diameter of the step hole on the lower end face of the annular thin-walled parts, and the height is consistent with the height of the inner step of the annular thin-walled parts. The upper end is pressed with a pressure plate to press the inner step surface of the upper end face of the parts, and the annular groove can be machined.

[0005] However, when the turning tool turns to a depth of 2mm, the annular thin-walled part has a large downward force, which causes the outer diameter flange to generate an upward reaction force. The reaction force deforms the annular thin-walled part, affecting all dimensions of the upper end face of the annular thin-walled part, and the part flatness requirements cannot be guaranteed, affecting the processing quality of the annular thin-walled part. Summary of the invention

[0006] Based on this, it is necessary to provide a clamping device and a clamping method to address the problem of deformation of annular thin-walled parts caused by the current use of bakelite support plates to support annular thin-walled parts on the three-jaw chuck of a lathe. The device can achieve reliable clamping and fixation of annular thin-walled parts, avoid deformation of the annular thin-walled parts caused by the reaction force during later processing, and ensure the processing quality of the annular thin-walled parts.

[0007] A clamping device for clamping an annular thin-walled part to install the annular thin-walled part on a lathe, the clamping device comprising:

[0008] A support base, wherein the edge of the support base has an annular mounting groove, and the mounting groove is used to mount the protrusion of the annular thin-walled part; and

[0009] A limit baffle is arranged on one side of the support base, and an edge of the limit baffle can abut against an inner flange of the annular thin-walled part to press the inner flange onto the support base.

[0010] In one embodiment of the present application, the support base has a first fixing hole, and the limit baffle has a second fixing hole coaxially corresponding to the first fixing hole;

[0011] The clamping device also includes a fastener, which passes through the second fixing hole and is installed in the first fixing hole to fix the limit baffle to the support base.

[0012] In one embodiment of the present application, the first fixing hole is coaxially arranged with the support base and the annular thin-walled part;

[0013] And / or, the fastener is a threaded member, the first fixing hole is a threaded hole, and the second fixing hole is a plain hole or a threaded hole.

[0014] In one embodiment of the present application, the depth of the mounting groove matches the axial dimension of the protrusion;

[0015] And / or, the radial dimension of the mounting groove matches the radial dimension of the protrusion.

[0016] In one embodiment of the present application, the diameter of the end of the limit baffle in contact with the support base is larger than the inner diameter of the inner flange and smaller than the outer diameter of the inner flange.

[0017] In one embodiment of the present application, the end of the limit baffle away from the support base has an annular avoidance portion;

[0018] The avoidance portion is used to avoid the workpiece so that the workpiece can process the annular body of the annular thin-walled part.

[0019] In one embodiment of the present application, the limit baffle includes a first blocking portion and a second blocking portion, the first blocking portion is disposed on the support base and is attached to the support base;

[0020] The second blocking portion is arranged on a side of the first blocking portion away from the support base, and a peripheral side of the second blocking portion has an annular avoidance portion.

[0021] In one embodiment of the present application, the first blocking portion is cylindrical, the second blocking portion is conical, and the diameter of the second blocking portion gradually decreases in a direction away from the first blocking portion;

[0022] Alternatively, the first blocking portion and the second blocking portion are both cylindrical, and the diameter of the second blocking portion is smaller than the diameter of the first blocking portion.

[0023] In one embodiment of the present application, the support base is cylindrical;

[0024] And / or, the support base and the limit baffle are both made of aluminum material.

[0025] A clamping method, applied to the clamping device as described in any of the above technical features, the clamping method at least comprises the following steps:

[0026] Turning the annular material to form an annular thin-walled part, wherein the annular thin-walled part has an inner flange, an annular body, and an outer flange;

[0027] Insert the protruding portion of the annular body into the mounting groove of the support base, and make the outer wall of the protruding portion fit the outer wall of the mounting groove;

[0028] Fitting the limit baffle plate to the inner flange;

[0029] The fastener is passed through the limit baffle and fixed to the support base.

[0030] After adopting the above technical solution, this application has at least the following technical effects:

[0031] The clamping device and clamping method of the present application, in the clamping device, the edge of the support base has an annular installation groove, and the protrusion of the annular thin-walled part is installed in the installation groove. The limit baffle is arranged on one side of the support base, and the edge of the limit baffle can abut against the upper surface of the annular thin-walled part, and press the inner flange to the support base, so that the lower surface of the inner flange fits the support base, thereby clamping the annular thin-walled part.

[0032] The clamping device fixes the annular thin-walled part to the support base through the limit baffle, so that the upper surface of the inner flange of the annular thin-walled part fits the limit baffle, and the lower surface of the inner flange fits the support base, thereby realizing reliable clamping and fixing of the annular thin-walled part. In this way, when the annular thin-walled part is turned later, the limit of the limit baffle and the support base can avoid the reaction force during processing from causing deformation of the annular thin-walled part, ensure the flatness requirements of the annular thin-walled part, and ensure the processing quality of the annular thin-walled part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional view of a clamping device according to an embodiment of the present application.

[0034] Figure 2 for Figure 1 The schematic diagram of the clamping device shown is a schematic diagram of clamping an annular thin-walled part.

[0035] Figure 3 for Figure 2 A cross-sectional view of an annular thin-walled part is shown.

[0036] Figure 4 for Figure 3 The enlarged partial view of the annular thin-walled part at point A is shown.

[0037] Figure 5 for Figure 1 A partial enlarged view of the clamping device at position B is shown.

[0038] Figure 6 for Figure 2 A partial enlarged view of the clamping device at position C is shown.

[0039] Figure 7 for Figure 1 A cross-sectional view of a support base in a clamping device is shown.

[0040] Figure 8 for Figure 1 A schematic diagram of a limit baffle in the clamping device shown.

[0041] Among them: 100, clamping device; 110, supporting base; 111, mounting groove; 112, first fixing hole; 120, limiting baffle; 121, second fixing hole; 122, avoidance part; 123, first blocking part; 124, second blocking part; 130, fastener; 200, annular thin-walled part; 210, annular body; 211, protrusion; 212, annular groove; 220, inner flange; 230, outer flange. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "on" or "below" a second feature, etc., or the like, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0048] It is understandable that annular thin-walled parts are widely used in various types of equipment. For example, annular thin-walled parts are important parts of vacuum interrupters. For large-sized annular thin-walled parts, their diameter is large and the wall thickness is thin. Generally, annular grooves need to be processed on the annular thin-walled parts to meet actual use requirements.

[0049] Usually, a bakelite support plate is used to fix the annular thin-walled parts to the three-jaw chuck. However, when the turning tool is turned to a depth of 2mm, the annular thin-walled parts have a large downward force, which causes the outer diameter flange to generate an upward reaction force. The reaction force deforms the annular thin-walled parts, affecting all dimensions of the upper end surface of the annular thin-walled parts, and the part flatness requirements cannot be guaranteed, affecting the processing quality of the annular thin-walled parts.

[0050] For this purpose, see Figure 1 and Figure 2 The present application provides a novel clamping device 100, which is used to clamp an annular thin-walled part 200 and can be installed on a three-jaw chuck of a lathe. Figure 1 is a cross-sectional view of a clamping device 100 according to an embodiment of the present application. Figure 2 for Figure 1 The schematic diagram shown is a clamping device 100 clamping an annular thin-walled part 200 .

[0051] The clamping device 100 can clamp the annular thin-walled part 200, and realize reliable clamping of the annular thin-walled part 200. Then, the clamping device 100 can be installed on the three-jaw chuck of the lathe. That is, the three-jaw chuck can clamp and fix the clamping device 100, and then, the processing parts of the lathe, such as the grooving cutter and other tools, can process the annular thin-walled part 200.

[0052] It can be understood that the annular thin-walled part 200 of the present application is mainly used in vacuum interrupter chambers, and the annular thin-walled part 200 can at least be used as a shielding member. Of course, in other embodiments of the present application, the annular thin-walled part 200 can also be used in other types of equipment.

[0053] It is worth noting that the focus of the present application is on the clamping of the annular thin-walled part 200 to facilitate the processing of the annular groove 212 on the annular thin-walled part 200. The application of the annular thin-walled part 200 and the processing of the annular thin-walled part 200 by a lathe are not the focus of the present application and will not be elaborated later.

[0054] In order to further illustrate the structure of the clamping device 100 and its structure for the annular thin-walled part 200, the structure of the annular thin-walled part 200 is briefly introduced here. Figure 3 and Figure 4 As shown, the annular thin-walled part 200 is arranged in an annular shape, and its wall thickness is relatively thin. Figure 3 for Figure 2 The cross-sectional view of the annular thin-walled part 200 is shown. Figure 4 for Figure 3 The illustrated is a partial enlarged view of the annular thin-walled component 200 at point A.

[0055] The annular thin-walled part 200 includes an annular body 210, an inner flange 220 and an outer flange 230. The annular body 210 is arranged in an annular shape, the inner flange 220 is arranged in an annular shape on the inner wall of the annular body 210 and protrudes from the inner wall of the annular body 210, and the outer flange 230 is arranged in an annular shape on the outer wall of the annular body 210 and protrudes from the outer wall of the annular body 210.

[0056] Usually, the height dimension of the inner flange 220 and the outer flange 230 along the axial direction is smaller than the dimension of the annular body 210 along the height direction, and both axial ends of the annular body 210 protrude from the surfaces of the inner flange 220 and the outer flange 230. That is, the lower part of the annular body 210 is the protrusion 211, and the protrusion 211 protrudes from the lower surface of the inner flange 220 and the outer flange 230.

[0057] This application is Figure 1 and Figure 2 The vertical and horizontal directions shown are used as references, the vertical direction of the clamping device 100 is the height direction and the top and bottom direction, the horizontal direction of the clamping device 100 is the width direction, and the axial direction of the annular body 210 is also the height direction of the clamping device 100. Moreover, the radial direction refers to the radial direction of the annular thin-walled part 200.

[0058] In addition, an annular groove 212 needs to be machined on the annular body 210. The annular groove 212 extends up and down from the upper surface of the annular body 210. After the clamping device 100 of the present application is used to clamp the annular thin-walled part 200, the clamping device 100 can be installed on the three-jaw chuck of a lathe to machine the annular groove 212 on the annular body 210 using a lathe turning process.

[0059] Moreover, for the convenience of description, the part without the annular groove 212 is the annular thin-walled part 200, and the part with the annular groove 212 is also the annular thin-walled part 200. The structures of the annular thin-walled part 200 before and after processing are substantially the same, and the difference between the two is the annular groove 212.

[0060] That is, the annular thin-walled part 200 is installed in the clamping device 100, and the annular thin-walled part 200 is clamped and fixed by the clamping device 100, and then the annular groove 212 is formed on the annular thin-walled part 200 by turning to obtain the annular thin-walled part 200.

[0061] Optionally, the inner flange 220, the annular body 210 and the outer flange 230 are an integrated structure and form the main structure of the annular thin-walled part 200. In this way, the structural strength of the annular thin-walled part 200 can be ensured, and the assembly process can be reduced, which facilitates the processing and molding of the annular thin-walled part 200.

[0062] The clamping device 100 of the present application can realize reliable clamping and fixing of the annular thin-walled part 200, avoid deformation of the annular thin-walled part 200 due to reaction force during later processing, and ensure the processing quality of the annular thin-walled part 200. The specific structure of the clamping device 100 of an embodiment is introduced below.

[0063] See also Figure 1 , Figure 2 , Figures 5 to 8 In one embodiment, the clamping device 100 includes a support base 110 and a limit baffle 120. The edge of the support base 110 has an annular mounting groove 111, and the mounting groove 111 is used to mount the protrusion 211 of the annular thin-walled part 200. The edge of the limit baffle 120 can abut against the inner flange 220 of the annular thin-walled part 200 to press the inner flange 220 onto the support base 110.

[0064] The limiting baffle 120 is disposed on one side of the supporting base 110 . Figure 5 for Figure 1 The partial enlarged view of the clamping device 100 at position B is shown. Figure 6 for Figure 2 The clamping device 100 is shown in a partially enlarged view at C. Figure 7 for Figure 1 The cross-sectional view of the support base 110 in the clamping device 100 is shown. Figure 8 for Figure 1 A schematic diagram of a limit baffle 120 in the clamping device 100 is shown.

[0065] The support base 110 is a fixed base, and the annular thin-walled part 200 and the limit baffle 120 are both arranged on the fixed base. The annular thin-walled part 200 and the limit baffle 120 are located on one side of the support base 110, such as the upper side, and the other side of the support base 110, such as the lower side, is detachably mounted on the three-jaw chuck of the lathe (hereinafter only referred to as the three-jaw chuck), so that the clamping device 100 fixes the annular thin-walled part 200 to the three-jaw chuck.

[0066] The edge of the upper surface of the support base 110 has an annular mounting groove 111, and the mounting groove 111 is recessed in the upper surface of the support base 110. The mounting groove 111 can accommodate the annular protrusion 211 of the annular thin-walled part 200. After the protrusion 211 is installed in the mounting groove 111, the lower surfaces of the inner flange 220 and the outer flange 230 can contact the upper surface of the support base 110.

[0067] The limit baffle 120 can realize the limiting fixation of the annular thin-walled part 200. The limit baffle 120 and the annular thin-walled part 200 are arranged on the same side. After the protrusion 211 of the annular thin-walled part 200 is installed in the installation groove 111, the limit baffle 120 can be fixed to the support base 110. At this time, the edge of the limit baffle 120 can abut the upper surface of the inner flange 220.

[0068] In this way, the force of fixing the limit baffle 120 to the support base 110 can cause the limit baffle 120 to press the inner flange 220, thereby enabling the lower surface of the inner flange 220 to fit the upper surface of the support base 110, and at the same time, the lower surface of the outer flange 230 to fit the upper surface of the support base 110.

[0069] Since the protrusion 211 of the annular thin-walled part 200 has been limited and fixed by the mounting groove 111 of the support base 110, and the inner flange 220 is pressed by the limiting baffle 120, the inner flange 220 is in contact with the upper surface of the support base 110. When the grooving cutter is turning the annular thin-walled part 200, even if the force applied by the grooving cutter to the annular body 210 is too large, the outer flange 230 will not generate an upward reaction force, thereby preventing the annular thin-walled part 200 from being deformed due to the reaction force.

[0070] The clamping device 100 of the above embodiment fixes the annular thin-walled part 200 to the supporting base 110 through the limiting baffle 120, so that the upper surface of the inner flange 220 of the annular thin-walled part 200 fits the limiting baffle 120, and the lower surface of the inner flange 220 fits the supporting base 110, thereby realizing reliable clamping and fixing of the annular thin-walled part 200.

[0071] In this way, when the annular thin-walled part 200 is turned at a later stage, the annular thin-walled part 200 is limited by the limit baffle 120 and the support base 110, so as to avoid the reaction force during processing from causing the annular thin-walled part 200 to be deformed, thereby ensuring the flatness requirement of the annular thin-walled part 200 and further ensuring the processing quality of the annular thin-walled part 200.

[0072] See also Figure 1 , Figure 5 and Figure 6 In one embodiment, there is a preset distance between the installation groove 111 and the edge of the support base 110. When the protrusion 211 of the annular thin-walled part 200 is installed in the installation groove 111, the preset distance can provide an installation space for the outer flange 230 of the annular thin-walled part 200, thereby ensuring the reliability of the annular thin-walled part 200 being installed on the support base 110.

[0073] See also Figure 1 , Figure 5 and Figure 6In one embodiment, the radial dimension of the outer flange 230 is smaller than the preset spacing. In this way, the preset spacing can provide reliable support for the outer flange 230.

[0074] For example, the radial dimension of the outer flange 230 is 3 mm, and the radial dimension of the preset spacing is 5 mm. Of course, in other embodiments of the present application, the radial dimension of the outer flange 230 and the preset spacing can also be other.

[0075] It is worth noting that the sizes of the supporting base 110 and the limiting baffle 120 are adapted to the size of the annular thin-walled part 200. The clamping devices 100 of different sizes are used to clamp the annular thin-walled parts 200 to adapt to the clamping of the annular thin-walled parts 200 of the corresponding sizes, so as to facilitate the processing of the annular thin-walled parts 200 of the corresponding sizes.

[0076] The size limitation given in this application is only an example to illustrate the size relationship between various parts, but the size relationship between various parts is not limited to the above, and can also be other sizes. This will not be repeated in the following text.

[0077] See also Figure 1 , Figure 7 and Figure 8 In one embodiment, the support base 110 has a first fixing hole 112, and the limit baffle 120 has a second fixing hole 121 coaxially corresponding to the first fixing hole 112. The clamping device 100 further includes a fastener 130, which passes through the second fixing hole 121 and is installed in the first fixing hole 112, so that the limit baffle 120 is fixed to the support base 110.

[0078] The first fixing hole 112 is provided on the upper surface of the support base 110, and the limiting baffle 120 has a second fixing hole 121 that penetrates axially along the annular thin-walled part 200. The first fixing hole 112 is coaxially arranged with the second fixing hole 121. In this way, the fastener 130 can pass through the second fixing hole 121 and be installed in the first fixing hole 112 to fix the limiting baffle 120 to the support base 110.

[0079] The fastener 130 can reliably fix the limit baffle 120 to the support base 110, and then the limit baffle 120 can press against the inner flange 220 of the annular thin-walled part 200 so that the lower surface of the inner flange 220 fits the upper surface of the support base 110, and cooperates with the installation groove 111 to limit the protrusion 211, so that the annular thin-walled part 200 can be reliably fixed to the support base 110.

[0080] In this way, the inner flange 220 and the outer flange 230 of the annular thin-walled part 200 are both in contact with the upper surface of the support base 110. When the annular thin-walled part 200 is turned, even if the force applied by the grooving cutter to the annular body 210 is too large, the annular thin-walled part 200 can be prevented from being deformed.

[0081] See also Figure 1 , Figure 2 and Figure 7 In one embodiment, the first fixing hole 112 is coaxially arranged with the support base 110 and the annular thin-walled part 200. That is, the central axis of the first fixing hole 112 coincides with the central axis of the support base 110 and the central axis of the annular thin-walled part 200.

[0082] The first fixing hole 112 is disposed at the center of the support base 110, so that the support base 110 is coaxially disposed with the first fixing hole 112. Moreover, the mounting groove 111 on the support base 110 is also coaxially disposed with the support base 110. After the annular thin-walled part 200 is mounted on the support base 110, the annular thin-walled part 200 is coaxially disposed with the support base 110 and the first fixing hole 112.

[0083] In this way, after the fastener 130 fixes the limit baffle 120 to the support base 110, the fastener 130 is located in the first fixing hole 112. At this time, the limit baffle 120 is coaxially arranged with the support base 110, and the limit baffle 120 can evenly contact the annular inner flange 220, ensuring that the limit baffle 120 exerts uniform pressure on the annular inner flange 220 at all locations.

[0084] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 In one embodiment, the fastener 130 is a threaded member, the first fixing hole 112 is a threaded hole, and the second fixing hole 121 is a smooth hole. In this way, the fastener 130 can be installed in the first fixing hole 112 through the second fixing hole 121.

[0085] Optionally, the fastener 130 is a hexagon socket screw. In this way, the fastener 130 can fasten the limit baffle 120, so that the limit baffle 120 is reliably fixed to the support base 110, and the support base 110 is prevented from falling or shifting.

[0086] In other embodiments of the present application, the second fixing hole 121 may also be a threaded hole. Of course, the first fixing hole 112 and the second fixing hole 121 may also be a plain hole, and the fastener 130 may also be a pin or other component capable of fastening, and the fastener 130 may be interference-fitted into the first fixing hole 112 and the second fixing hole 121.

[0087] Optionally, there is a certain distance between the first fixing hole 112 and the bottom of the support base 110. In other words, the first fixing hole 112 is a blind hole. In this way, the structural strength of the support base 110 can be ensured, and the three-jaw chuck can be used to clamp the support base 110.

[0088] See also Figure 1 , Figures 4 to 6 In one embodiment, the depth of the mounting groove 111 is adapted to the axial dimension of the protrusion 211. In other words, the depth of the mounting groove 111 is substantially the same as the axial dimension of the protrusion 211. In this way, after the protrusion 211 is installed in the mounting groove 111, the bottom of the protrusion 211 can contact the bottom wall of the mounting groove 111, ensuring that the protrusion 211 is reliably fixed in the mounting groove 111.

[0089] See also Figure 1 , Figures 4 to 6 In one embodiment, the radial dimension of the mounting groove 111 matches the radial dimension of the protrusion 211. The radial dimension of the mounting groove 111 is the groove width, and the groove width of the mounting groove 111 is substantially the same as the radial dimension of the protrusion 211.

[0090] In this way, after the protrusion 211 is installed in the mounting groove 111, the side of the protrusion 211 can contact the side wall of the mounting groove 111, that is, the protrusion 211 is installed in the mounting groove 111 with interference fit, ensuring that the protrusion 211 is reliably fixed in the mounting groove 111 and preventing the protrusion 211 from falling out of the mounting groove 111.

[0091] For example, the radial dimension of the installation groove 111 is 5 mm in width, and the radial dimension of the protrusion 211 is 5.25 mm. Of course, in other embodiments of the present application, the radial dimensions of the installation groove 111 and the radial dimensions of the protrusion 211 can also be other.

[0092] See also Figure 2 , Figure 5 and Figure 6 In one embodiment, the diameter of the end of the limit baffle 120 that contacts the support base 110 is larger than the inner diameter of the inner flange 220 and smaller than the outer diameter of the inner flange 220. In other words, after the limit baffle 120 is installed on the support base 110, the edge of the limit baffle 120 can abut against the upper surface of the inner flange 220.

[0093] In this way, the limit baffle 120 can reliably abut the inner flange 220 and press the inner flange 220 onto the support base 110, avoiding the situation where the limit baffle 120 abuts against the annular body 210, and also avoiding the situation where the limit baffle 120 fails to contact the inner flange 220, thereby achieving reliable fixation of the inner flange 220.

[0094] At the same time, after the limiting baffle 120 abuts against the inner flange 220, the annular edge of the limiting baffle 120 can contact the annular inner flange 220, and the contact area between the limiting baffle 120 and the inner flange 220 is an annular contact area. In this way, the limiting baffle 120 can achieve reliable fixation of the inner flange 220, and then achieve reliable fixation of the annular thin-walled part 200 relative to the support base 110, and prevent the position of the annular thin-walled part 200 relative to the support base 110 from shifting.

[0095] See also Figure 2 , Figure 5 , Figure 6 and Figure 8 In one embodiment, the end of the limit baffle 120 away from the support base 110 has an annular avoidance portion 122. The avoidance portion 122 is used to avoid the workpiece so that the workpiece can process the annular body 210 of the annular thin-walled part 200.

[0096] The outer peripheral surface of the limit baffle 120 away from the support base 110 has an escape portion 122, and the escape portion 122 can escape the workpiece such as the grooving knife. It is understandable that the grooving knife may collide with the limit baffle 120 when advancing. After the escape portion 122 is provided, the escape portion 122 can provide a certain space for the grooving knife to advance and retreat, avoiding the grooving knife from colliding with the limit baffle 120, thereby ensuring the reliability of processing the annular thin-walled part 200.

[0097] See also Figure 2 , Figure 5 , Figure 6 and Figure 8 In one embodiment, the limit baffle 120 includes a first blocking portion 123 and a second blocking portion 124. The first blocking portion 123 is disposed on the support base 110 and is attached to the support base 110. The second blocking portion 124 is disposed on a side of the first blocking portion 123 away from the support base 110, and a circular avoidance portion 122 is provided around the second blocking portion 124.

[0098] The limiting baffle 120 is divided into a first blocking portion 123 and a second blocking portion 124 along the height direction. The first blocking portion 123 is located at the bottom and can contact the inner flange 220 of the annular thin-walled part 200 and the support base 110. The second blocking portion 124 is located above the first blocking portion 123. The second blocking portion 124 has an annular avoidance portion 122 on its circumferential side.

[0099] In this way, the limiting baffle 120 can reliably fix the annular thin-walled part 200 through the first blocking part 123. At the same time, the avoidance part 122 on the side of the second blocking part 124 can provide a certain space for the grooving knife to advance and retreat, thereby avoiding collision between the grooving knife and the limiting baffle 120, thereby ensuring the reliability of processing the annular thin-walled part 200.

[0100] In one embodiment, the first blocking portion 123 and the second blocking portion 124 are an integrated structure. In this way, the structural strength of the limit baffle 120 can be ensured, and the use of the limit baffle 120 is convenient. Of course, in other embodiments of the present application, the first blocking portion 123 and the second blocking portion 124 can also be separately provided and reliably connected by means of screws, adhesives, etc.

[0101] See also Figure 2 , Figure 5 , Figure 6 and Figure 8 In one embodiment, the first blocking portion 123 is cylindrical, the second blocking portion 124 is conical, and the diameter of the second blocking portion 124 gradually decreases in a direction away from the first blocking portion 123 .

[0102] The first blocking portion 123 is cylindrical, and the second blocking portion 124 is disposed behind the first blocking portion 123. The diameter of one end of the second blocking portion 124 connected to the first blocking portion 123 is the same as the diameter of the first blocking portion 123, and the diameter of the second blocking portion 124 gradually decreases from bottom to top.

[0103] That is, the second blocking portion 124 is arranged in a truncated cone shape. Figure 5 , Figure 6 and Figure 8 As shown, the circumference of the second blocking portion 124 is an annular escape portion 122. After the escape portion 122 is cut along the axial direction, the escape portion 122 is arranged in a triangular shape. The escape portion 122 can provide a certain space for the grooving knife to advance and retreat.

[0104] Of course, in other embodiments of the present application, the first blocking portion 123 and the second blocking portion 124 are both cylindrical, and the diameter of the second blocking portion 124 is smaller than the diameter of the first blocking portion 123 .

[0105] That is to say, the first blocking portion 123 and the second blocking portion 124 are both cylindrical, the diameter of the second blocking portion 124 is smaller than the diameter of the first blocking portion 123 , and the second blocking portion 124 is recessed in the first blocking portion 123 to form the avoiding portion 122 .

[0106] In one embodiment, the support base 110 is cylindrical. In other words, the support base 110 is a cylindrical structure. In this way, the shape of the support base 110 is compatible with the shape of the annular thin-walled part 200, and at the same time, it is convenient for the three-jaw chuck to clamp.

[0107] In one embodiment, the support base 110 and the limit baffle 120 are both made of aluminum. That is, the support base 110 and the limit baffle 120 are formed by processing aluminum bars. In this way, when the support base 110 and the limit baffle 120 clamp the annular thin-walled part 200, they will not cause damage to the annular thin-walled part 200.

[0108] The clamping device 100 of the present application fixes the annular thin-walled part 200 to the support base 110 through the limit baffle 120, so that the upper surface of the inner flange 220 of the annular thin-walled part 200 fits the limit baffle 120, and the lower surface of the inner flange 220 fits the support base 110, thereby realizing reliable clamping and fixing of the annular thin-walled part 200. In this way, when the annular thin-walled part 200 is turned later, the limit of the limit baffle 120 and the support base 110 can prevent the reaction force during processing from causing deformation of the annular thin-walled part 200, ensure the flatness requirement of the annular thin-walled part 200, and ensure the processing quality of the annular thin-walled part 200.

[0109] At the same time, the limiting baffle 120 can achieve reliable fixation of the inner flange 220, thereby achieving reliable fixation of the annular thin-walled part 200 relative to the support base 110, and preventing the position of the annular thin-walled part 200 from moving relative to the support base 110. In addition, the limiting baffle 120 has an escape portion 122 on the outer peripheral side away from the support base 110, and the escape portion 122 can provide a certain space for the grooving knife to advance and retreat, thereby preventing the grooving knife from colliding with the limiting baffle 120, and ensuring the reliability of processing the annular thin-walled part 200.

[0110] After the clamping device 100 of the present application clamps the annular thin-walled part 200, the clamping device 100 can be installed on the three-jaw chuck of the lathe. When processing the annular thin-walled part 200, the three-jaw chuck will not cause the annular thin-walled part 200 to deform. At the same time, the clamping device 100 can reliably clamp the annular thin-walled part 200, avoid the reaction force during processing to cause the annular thin-walled part 200 to deform, ensure the flatness requirements of the annular thin-walled part 200, and ensure the processing quality of the annular thin-walled part 200.

[0111] As shown in Table 1, the clamping device 100 of the present application for clamping the annular thin-walled part 200 is compared with the current bakelite support plate for clamping the annular thin-walled part 200.

[0112]

[0113] By comparison, it can be seen that the use of bakelite support plates to clamp the annular thin-walled parts 200 will cause deformation of the annular thin-walled parts 200. However, after the clamping device 100 of the present application is used to clamp the annular thin-walled parts 200, deformation of the annular thin-walled parts 200 during processing can be avoided, thereby improving the qualified rate of the annular thin-walled parts 200.

[0114] The present application also provides a clamping method, which is applied to the clamping device 100 described in any of the above embodiments, and the clamping method at least comprises the following steps:

[0115] The annular material is turned to form an annular thin-walled part 200, wherein the annular thin-walled part 200 has an inner flange 220, an annular body 210 and an outer flange 230;

[0116] Insert the protruding portion 211 of the annular body 210 into the mounting groove 111 of the support base 110, and make the outer wall of the protruding portion 211 fit the outer wall of the mounting groove 111;

[0117] Fitting the limit baffle 120 to the inner flange 220;

[0118] The fastener 130 passes through the limiting baffle 120 and is fixed to the supporting base 110 .

[0119] Before the clamping device 100 of the present application is used to clamp the annular thin-walled part 200, all dimensions outside the annular groove 212 of the annular thin-walled part 200 are first processed to the required size. Subsequently, the protrusion 211 of the annular thin-walled part 200 is installed in the annular groove 212 of the support base 110, and the outer wall of the protrusion 211 is fitted.

[0120] After the annular thin-walled part 200 is installed in place, the limiting baffle 120 is installed on the supporting base 110 so that the edge of the limiting baffle 120 abuts against the inner flange 220 of the annular thin-walled part 200. The position of the limiting baffle 120 is adjusted so that the second fixing hole 121 of the limiting baffle 120 is aligned with the first fixing hole 112 of the supporting base 110.

[0121] Subsequently, the fastener 130 is installed in the first fixing hole 112 through the second fixing hole 121, completing the process of the clamping device 100 clamping the annular thin-walled part 200. After the annular thin-walled part 200 is installed in the clamping device 100, the clamping device 100 is installed in the three-jaw chuck, and the annular groove 212 can be turned by the grooving cutter.

[0122] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A clamping device, characterized in that: Used to clamp annular thin-walled parts to install the annular thin-walled parts on a lathe, the clamping device includes: A support base, wherein the edge of the support base has an annular mounting groove, and the mounting groove is used to mount the protrusion of the annular thin-walled part; and A limit baffle is arranged on one side of the support base, and an edge of the limit baffle can abut against an inner flange of the annular thin-walled part to press the inner flange onto the support base.

2. The clamping device according to claim 1, characterized in that: The support base has a first fixing hole, and the limit baffle has a second fixing hole coaxially corresponding to the first fixing hole; The clamping device also includes a fastener, which passes through the second fixing hole and is installed in the first fixing hole to fix the limit baffle to the support base.

3. The clamping device according to claim 2, characterized in that: The first fixing hole is coaxially arranged with the support base and the annular thin-walled part; And / or, the fastener is a threaded member, the first fixing hole is a threaded hole, and the second fixing hole is a plain hole or a threaded hole.

4. The clamping device according to claim 1, characterized in that: The depth of the mounting groove is adapted to the axial dimension of the protrusion; And / or, the radial dimension of the mounting groove matches the radial dimension of the protrusion.

5. The clamping device according to claim 1, characterized in that: The diameter of the end of the limit baffle contacting the support base is larger than the inner diameter of the inner flange and smaller than the outer diameter of the inner flange.

6. The clamping device according to any one of claims 1 to 5, characterized in that: The end of the limit baffle away from the support base has an annular avoidance portion; The avoidance portion is used to avoid the workpiece so that the workpiece can process the annular body of the annular thin-walled part.

7. The clamping device according to any one of claims 1 to 5, characterized in that: The limit baffle includes a first blocking portion and a second blocking portion, wherein the first blocking portion is disposed on the support base and is attached to the support base; The second blocking portion is arranged on a side of the first blocking portion away from the support base, and a peripheral side of the second blocking portion has an annular avoidance portion.

8. The clamping device according to claim 7, characterized in that: The first blocking portion is cylindrical, the second blocking portion is conical, and the diameter of the second blocking portion gradually decreases in a direction away from the first blocking portion; Alternatively, the first blocking portion and the second blocking portion are both cylindrical, and the diameter of the second blocking portion is smaller than the diameter of the first blocking portion.

9. The clamping device according to any one of claims 1 to 5, characterized in that: The support base is cylindrical; And / or, the support base and the limit baffle are both made of aluminum material.

10. A clamping method, characterized in that: Applied to the clamping device according to any one of claims 1 to 9, the clamping method comprises at least the following steps: Turning the annular material to form an annular thin-walled part, wherein the annular thin-walled part has an inner flange, an annular body, and an outer flange; Insert the protruding portion of the annular body into the mounting groove of the support base, and make the outer wall of the protruding portion fit the outer wall of the mounting groove; Fitting the limit baffle plate to the inner flange; The fastener is passed through the limit baffle and fixed to the support base.

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