Positioning tool for processing end symmetry of thin-walled part

Abstract

The application discloses a positioning tool for processing end symmetry of a thin-wall part, which comprises a base, a crossbeam, a positioning assembly, a pressing plate assembly, a supporting block and a damping assembly, the base is provided with the crossbeam at two ends, the positioning assembly, the supporting block and the damping assembly are arranged on the crossbeam, the thin-wall part to be processed is sleeved on the crossbeam, the supporting block is matched with the positioning assembly, the supporting block supports the thin-wall part to be processed, the pressing plate assembly is used for limiting and pressing the two ends of the thin-wall part to be processed on the crossbeam, the crossbeam is matched with the supporting block, good support is formed on the thin-wall part to be processed, deformation does not occur during clamping and processing, the requirement of the design drawing shape tolerance is ensured, and the damping assembly is arranged in the middle of the crossbeam, so that the problems of poor rigidity of the thin-wall part, resonance of the part and the machining tool, and overcutting or even scrapping of the part caused by a bouncing tool are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical processing, and particularly relates to a positioning tool for processing end head symmetry of a thin-walled part. BACKGROUND

[0002] The processing of a thin-walled part is very common in mechanical manufacturing. In the mechanical processing of end head symmetry of a thin-walled part, the following situations affecting product quality may occur.

[0003] 1. The thin-walled part is prone to deformation. When clamped by a general tool, deformation is inevitably caused by constraint and relaxation, and the requirements of design drawing shape and position tolerance cannot be guaranteed.

[0004] 2. The thin-walled part has poor rigidity, and the part is prone to resonance with a processing tool. During the process, the part is prone to overcutting and even scrap due to the springing of the tool.

[0005] 3. In the previous processing process, a tool block is supported on the outside of a cylinder to prevent vibration, but the installation of the support tool block is time-consuming and laborious. The support force cannot be intuitively controlled, and the part is prone to deformation during the installation process, which affects the quality of the final product.

[0006] Therefore, there is currently a need for a technical solution to solve the technical problems of difficult size control, tool vibration, and complex vibration prevention measures in the mechanical processing of a thin-walled part. SUMMARY

[0007] To overcome the above-mentioned deficiencies, the present application provides a positioning tool for processing end head symmetry of a thin-walled part. The tool uses a cross beam in combination with a support block to provide good support for the thin-walled part being processed, so that deformation of the thin-walled part being processed is prevented during clamping and processing, and the requirements of design drawing shape and position tolerance are guaranteed. The tool uses a pressing block in combination with a support block to fix the thin-walled part being processed, and the support force is easy to control and the size is easy to control intuitively, so that deformation of the thin-walled part is not easy to occur. A shock absorbing assembly is provided in the middle of the cross beam to solve the problem of poor rigidity of the thin-walled part, which is prone to resonance with a processing tool, and the problem of overcutting and even scrap of the part due to the springing of the tool during the process.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a positioning tool for processing end head symmetry of a thin-walled part. The tool includes a base, a cross beam, a positioning assembly, a pressing plate assembly, a support block, and a shock absorbing assembly. The base is installed on a workbench. The cross beam is installed at both ends of the base. The positioning assembly, the support block, and the shock absorbing assembly are provided on the cross beam. The thin-walled part being processed is sleeved on the cross beam. The support block cooperates with the positioning assembly to support the thin-walled part being processed. The pressing plate assembly is used to limit and press the two ends of the thin-walled part being processed on the cross beam.

[0009] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the base is provided with a reference edge, an upper end of the reference edge is provided with a first pin hole for mounting a positioning cross beam, and a lower end of the base is provided with a pressing plate assembly groove, and the base is mounted on a workbench by using the pressing plate assembly groove.

[0010] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the cross beam is a square rigid body, the upper surface of the cross beam is provided with a second pin hole, the second pin hole is used for positioning a supporting block, an angular column and a shock-absorbing slide pin, and a threaded hole is arranged on the cross beam and used for mounting the supporting block, the angular column and the shock-absorbing slide pin.

[0011] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that two corners of the supporting block are provided with counter-sunk holes, the supporting block is locked to the cross beam by using screws, the other two corners of the supporting block are provided with pin holes, a pin is inserted into the pin holes to accurately position the supporting block on the cross beam, and the top of the supporting block is a profiled curved surface which is completely attached to the inner wall of the thin-walled part to be processed.

[0012] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that a relief step is arranged on the profiled curved surface, and the machining tool is avoided when a notch of the part end head is machined.

[0013] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the number of the supporting blocks is two or more, and the supporting blocks are arranged at both ends and the middle of the cross beam and used for supporting the thin-walled part to be processed.

[0014] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the shock-absorbing assembly is a shock-absorbing slide pin, the shock-absorbing slide pin comprises a pin column, a tail nut, a middle nut and a spring, the pin column is a two-section structure with a large upper section and a small lower section, the upper section is a supporting column and the lower section is a threaded column, a through hole for sliding of the upper section is arranged on the upper surface of the cross beam, a through hole for sliding of the lower section is arranged on the lower surface of the cross beam, the middle nut is mounted on the upper end of the lower section, the spring is sleeved on the lower section and located between the middle nut and the inner lower surface of the cross beam, and the part of the lower section beyond the cross beam is mounted with the tail nut, and the tail nut makes the spring in a compressed state.

[0015] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the positioning assembly is an angular column, a counter-sunk hole is arranged in the center of the angular column, the angular column is locked to the cross beam by using a screw through the counter-sunk hole, two pin holes are arranged at the bottom of the angular column, a pin is inserted into the pin holes to accurately position the angular column on the cross beam, and the angular column is used for quickly determining an angular direction when the thin-walled part to be processed is machined.

[0016] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the pressing plate assembly comprises a pressing plate and a pressing bolt, a protrusion is arranged at the rear end of the pressing plate to form an L shape, the L-shaped opening of the pressing plate is arranged towards the pressing plate, the pressing bolt is arranged at the middle part of the pressing plate, and the screw thread of the pressing bolt is matched with the threaded hole on the cross beam to realize the pressing distance adjustment of the pressing plate.

[0017] According to the positioning tool for thin-walled part end head symmetry processing, the further preferred technical scheme is that the lower surface of the pressing plate in contact with the outer wall of the thin-walled part to be processed is a profiled curved surface, and the shape of the profiled curved surface is completely matched with the outer wall surface of the thin-walled part to be processed.

[0018] Compared with the prior art, the technical scheme of the present application has the following advantages / benefits:

[0019] 1. The cross beam cooperates with the supporting block to form good support for the thin-walled part to be processed, so that the thin-walled part to be processed is not deformed during clamping and processing, and the design drawing shape tolerance requirement is guaranteed.

[0020] 2. The thin-walled part is fixed by the pressing block cooperated with the supporting block, the supporting force is controlled conveniently and intuitively, and the deformation of the thin-walled part is not easy to occur.

[0021] 3. The damping assembly is arranged in the middle part of the cross beam to solve the problem that the thin-walled part is poor in rigidity, the part is easy to resonate with the machining tool, and the problem of overcutting or even scrapping of the part caused by the elastic tool during the process is solved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structure schematic view of the positioning tool for thin-walled part end head symmetry processing of the present application installing a part to be processed.

[0024] Figure 2 is Figure 1 a top view.

[0025] Figure 3 is Figure 2 a sectional view at A-A in

[0026] Figure 4It is a structure schematic view of the positioning tool for the end head symmetry processing of the thin-wall part.

[0027] Figure 5 It is a top view of the positioning tool for the end head symmetry processing of the thin-wall part. Figure 4

[0028] Figure 6 It is a structure schematic view of the base of the positioning tool for the end head symmetry processing of the thin-wall part.

[0029] Figure 7 It is a structure schematic view of the upper surface of the crossbeam of the positioning tool for the end head symmetry processing of the thin-wall part.

[0030] Figure 8 It is a structure schematic view of the lower surface of the crossbeam of the positioning tool for the end head symmetry processing of the thin-wall part.

[0031] In the figure, the marks are as follows: 1. base 101. reference edge 102. first pin hole 103. pressing plate assembly groove 2. crossbeam 201. second pin hole 202. threaded hole 203. waist-shaped hole 3. positioning assembly 4. pressing plate assembly 401. pressing plate 402. pressing bolt 403. processing hole 5. supporting block 6. damping assembly 601. pin column 602. tail nut 603. middle nut 604. spring 7. thin-wall part to be processed 8. profiled curved surface. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. Therefore, the detailed description of the embodiments of the present application provided below is not intended to limit the scope of the claimed present application, but only represents the selected embodiments of the present application.

[0033] It should be noted that: similar marks and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it can not be further defined and explained in the subsequent drawings.

[0034] Embodiment:

[0035] As Figures 1-8 ​As shown, a positioning tool for machining end symmetry of thin-walled parts. It comprises a base 1, a crossbeam 2, a positioning assembly 3, a pressing plate assembly 4, a supporting block 5, a damping assembly 6, the base 1 is installed on the workbench, the crossbeam 2 is installed on the base 1, the positioning assembly 3, the supporting block 5 and the damping assembly 6 are arranged on the crossbeam 2, the thin-walled part 7 to be machined is sleeved on the crossbeam 2, the supporting block 5 cooperates with the positioning assembly 3, the supporting block 5 supports the thin-walled part 7 to be machined, and the pressing plate assembly 4 is used to limit and press the two ends of the thin-walled part 7 to be machined on the crossbeam 2.

[0036] The base 1 is provided with a reference edge 101 (reference surface), the upper end of the base 1 is provided with a first pin hole 102 for installing the positioning crossbeam 2, the lower end of the base 1 is provided with a pressing plate assembly 4 slot 103, and the base 1 is installed on the workbench by using the pressing plate assembly 4 slot 103. The structure means that the distance between the bases 1 can be freely adjusted. In fact, the adjustable structure of the lower part of the base 1 can also adopt other forms, such as uniformly spaced fixed holes. Selecting the fixed holes with corresponding spacing to fix the base 1 can achieve the purpose. The conventional structure can also achieve the purpose, and details are not described herein.

[0037] The crossbeam 2 is a square steel, a second pin hole 201 is arranged on the upper surface of the crossbeam 2 for positioning the supporting block 5, the angular column and the damping slide pin, threaded holes 202 are arranged on the crossbeam 2 for installing the supporting block 5, the angular column and the damping slide pin. Of course, the crossbeam 2 does not necessarily need to be a square steel. As long as it can be installed (including its own installation and the installation of components on the crossbeam 2), it can. Of course, in order to achieve the basic installation requirement, it is necessary to set a plane on the crossbeam 2 for installing the damping slide pin. The plane is set as an upper and lower opposite plane structure which is more reasonable. At the same time, the connection between the crossbeam 2 and the base 1 is fixed by bolts, and the corresponding mounting holes are located on the lower surface of the crossbeam 2, that is, the bolts are installed from the inside of the square steel. Therefore, the mounting holes can be set as waist-shaped holes 203 (even long adjustment slots) consistent with the direction of the crossbeam 2. At this time, the spacing between the two bases 1 can be adjusted.

[0038] The supporting block 5 is provided with a countersunk hole at two corners, and a screw is used to lock the supporting block 5 to the crossbeam 2. The other two corners are provided with pin holes, and the supporting block 5 is accurately positioned on the crossbeam 2 by inserting a pin. The top of the supporting block 5 is a profiled curved surface 8 which is completely matched with the inner wall of the thin-walled part 7 to be machined. The supporting block 5 is fixed by a bolt, so that the supporting block 5 can be conveniently replaced to support different specifications of parts to be machined. The parts to be machined are not limited to the cylindrical thin-walled parts shown in the figure. Figure 1 The positioning tool can be used for positioning and machining other similar thin-walled parts with open ends.

[0039] In the profiled camber 8 is provided with a avoiding step, when processing the end gap of the part, avoiding the processing tool, the profiled camber 8 is first selected to set near the processing position, the bearing effect is stronger, if necessary, it is set in the processing area, at this time, it is necessary to set the avoiding step or recess, at the same time, in order to process the gap, the through hole is arranged in the corresponding position of the pressing plate 401, of course, the specific situation needs to be designed according to the processing position.

[0040] The support block 5 is two or more, arranged at both ends and middle of the cross beam 2 for bearing the thin-walled part 7 to be processed, mainly fixing the both ends of the thin-walled part, but if the length of the thin-walled part is longer, the middle of the thin-walled part needs to be increased with the support block 5, at the same time, if the middle of the thin-walled part needs to be processed, the support block 5, positioning assembly 3 and pressing plate assembly 4 need to be additionally set, the middle of the thin-walled part is additionally provided with the pressing plate assembly 4, which can be an additional detachable pressing plate assembly 4 arranged on the process hole of the thin-walled part, or the pressing plate assembly 4 extending from the base 1.

[0041] The damping assembly 6 is a shockproof slide pin, which includes a pin column 601, a tail nut 602, a middle nut 603 and a spring 604, the pin column 601 is a two-section structure with large upper section and small lower section, the upper section is a support column and the lower section is a threaded column, the through hole for sliding the upper section is arranged on the upper surface of the cross beam 2, the through hole for sliding the lower section is arranged on the lower surface of the cross beam 2, the middle nut 603 is installed on the upper end of the lower section, the spring 604 is sleeved on the lower section, and the spring 604 is located between the middle nut 603 and the inner lower surface of the cross beam 2, the part of the lower section beyond the cross beam 2 is installed with the tail nut 602, the tail nut 602 makes the spring 604 in the compressed state, the shockproof assembly is actually a shock absorber structure, the support column of the upper section is closely combined with the inner wall of the thin-walled part, if necessary, the thin-walled part is rigidly connected with the pin column 601 (bolted) through the process hole of the thin-walled part, if the processing area is involved in the position of the pin column 601, it can be reasonably avoided, the damping assembly 6 is preferably arranged in the middle of the thin-walled part, and multiple damping assemblies 6 can be arranged when the length of the thin-walled part is longer. The damping assembly 6 is actually only a buffer structure, which can be arranged in other forms, such as hydraulic shock absorber or air suspension type shock absorber, or rubber column and other elastic damping schemes.

[0042] The positioning assembly 3 is an angular column, a sink hole is formed in the center of the angular column, the angular column is locked to the cross beam 2 through the sink hole by a screw, two pin holes are formed in the bottom of the angular column, a pin is inserted to accurately position the angular column on the cross beam 2, and the angular column is used to quickly determine the angle when the thin-walled part 7 to be processed is processed. The positioning assembly 3 is realized by using a process hole on the thin-walled part 7 to be processed or other features that have been processed. The positioning assembly 3 can be an angular column, or other forms of positioning protrusions or recesses. When the positioning assembly 3 conflicts with the processing area, it can be reasonably avoided.

[0043] The pressing plate assembly 4 includes a pressing plate 401 and a pressing bolt 402. The rear end of the pressing plate 401 is provided with a protrusion forming an L shape, the L-shaped opening of the pressing plate 401 is arranged towards the pressing plate 401, the pressing bolt 402 is arranged in the middle of the pressing plate 401, the threads of the pressing bolt 402 are matched with the threaded holes 202 on the cross beam 2 to realize the adjustment of the pressing distance of the pressing plate 401, and the pressing plate assembly 4 plays a role in pressing the thin-walled part. Its form is not limited to the technical solution of the pressing block described in the present application, and it can also be in the form of pneumatic pressing, and the position of pressing can be adjusted according to actual needs.

[0044] The lower surface of the pressing plate 401 in contact with the outer wall of the thin-walled part 7 to be processed is a contoured curved surface 8, the shape of the contoured curved surface 8 completely matches the outer wall surface of the thin-walled part 7 to be processed, the pressing plate 401 is a replaceable component, which is suitable for different specifications of thin-walled parts, mainly for replacement of the contoured surface and replacement of the size of the pressing plate 401 itself. At the same time, in order to realize the processing of the end part of the thin-walled part, a processing hole 403 is arranged on the pressing plate 401, the processing hole 403 corresponds to the position to be processed of the thin-walled part 7 to be processed, and the position to be processed of the thin-walled part 7 to be processed is directly pressed by selecting the pressing plate 401 first. If the processing area is large and the size of the pressing plate 401 cannot cover it, the pressing plate 401 is preferentially arranged near the processing area to prevent displacement during processing and reduce the shock assembly 6. In possible cases, the shock assembly 6 is arranged to be consistent with the processing direction, secondly, the included angle between the shock assembly 6 and the processing direction is as small as possible, and the shock assembly 6 is arranged on the angle bisector of the processing angle. If the processing area is large (more than 90 degrees), multiple shock absorbers need to be arranged to correspond to different processing angles.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0048] The above is only the preferred embodiment of the present application, and it should be pointed out that the above preferred embodiment should not be regarded as a limitation on the present application, and the protection scope of the present application should be limited by the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the present application, a number of improvements and refinements can also be made, which should also be regarded as the protection scope of the present application.

Claims

1. A positioning tool for processing end head symmetry of a thin-walled part, characterized in that, It includes base, beam, positioning assembly, pressing plate assembly, support block, damping assembly, the base is left and right two and installs on the workbench, the beam both ends install on the base, set up on the beam positioning assembly, support block, damping assembly, the thin-walled part to be processed is installed on the beam, the support block cooperates with the positioning assembly, the support block supports the thin-walled part to be processed, utilizes the pressing plate assembly and is pressed tightly in the beam on the both ends of the thin-walled part to be processed, the damping assembly is shockproof slide pin, it includes pin column, tail nut, middle nut, spring, the pin column is two section structure of big up small, the upper section is support column lower section is threaded column, set up the through-hole of upper section sliding on the upper surface of the beam, set up the through-hole of lower section sliding on the lower surface of the beam, install middle nut on the upper end of lower section, spring is installed on lower section, and spring is located between middle nut and the inner lower surface of beam, the part of lower section beyond the beam installs tail nut, tail nut makes spring in compression state.

2. The positioning tool for processing end head symmetry of thin-walled parts according to claim 1, characterized in that, The base is provided with a reference edge, a first pin hole for installing the positioning beam is arranged at the upper end of the base, and a pressing plate assembly groove is arranged at the lower end of the base to install the base on the workbench.

3. The positioning tool for processing end head symmetry of thin-walled parts according to claim 1, characterized in that, The beam is a square rigid, a second pin hole is arranged on the upper surface of the beam for positioning the support block, the angular column and the shockproof slide pin, and a threaded hole is arranged on the beam for installing the support block, the angular column and the shockproof slide pin.

4. The positioning tool for processing end head symmetry of thin-walled parts according to claim 1, characterized in that, Two corners of the support block are provided with counterbores, and the support block is locked to the beam by screws; the other two corners are provided with pin holes, and the support block is accurately positioned on the beam by inserting pins; and the top of the support block is a profiling curved surface which is completely fitted with the inner wall of the thin-walled part to be processed.

5. The positioning tool for processing end head symmetry of thin-walled parts according to claim 4, characterized in that, An avoiding step is arranged on the profiling curved surface to avoid machining tools when machining a notch at the end of the part.

6. The positioning tool for processing end head symmetry of thin-walled part according to claim 1, characterized in that, The number of the support blocks is two or more, and the support blocks are arranged at both ends and the middle of the beam to support the thin-walled part to be processed.

7. The positioning tool for processing end head symmetry of thin-walled part according to claim 1, characterized in that, The positioning assembly is an angular column, a counterbore is arranged at the center of the angular column, the angular column is locked to the beam by a screw through the counterbore, two pin holes are arranged at the bottom of the angular column, and the angular column is accurately positioned on the beam by inserting pins; and the angular column is used to quickly determine the angular direction during the processing of the thin-walled part to be processed.

8. The positioning tool for processing end head symmetry of thin-walled parts according to claim 1, characterized in that, The pressing plate assembly includes a pressing plate and a pressing bolt, a protrusion is arranged at the rear end of the pressing plate to form an L shape, the L-shaped opening of the pressing plate is arranged towards the pressing plate, the pressing bolt is arranged at the middle of the pressing plate, and the threads of the pressing bolt are matched with the threaded holes on the beam to adjust the pressing distance of the pressing plate.

9. The positioning tool for processing end head symmetry of thin-walled part according to claim 1, characterized in that, The lower surface of the pressing plate which is in contact with the outer wall of the thin-walled part to be processed is a profiling curved surface, and the shape of the profiling curved surface is completely fitted with the outer wall of the thin-walled part to be processed.

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