Pull-down expansion sleeve type positioning mechanism for plane machining of thin-walled workpiece

Abstract

The utility model provides a thin-walled workpiece plane machining pull-down expansion sleeve type positioning mechanism which comprises a machine frame, a thin-walled workpiece positioning mechanism is installed on the machine frame, an expansion sleeve mechanism is installed on the positioning mechanism, the machine frame comprises a base, vertical side plates are installed on the base in a front-back symmetry mode, and the vertical side plates are connected with the expansion sleeve mechanism. A horizontal mounting plate is transversely arranged between the upper portions of the two vertical side plates, the thin-wall part positioning mechanism comprises a special-shaped limiting seat arranged corresponding to the plane of the thin-wall part, and the special-shaped limiting seat is fixed to the horizontal mounting plate. According to the utility model, the design is reasonable, the whole plane is processed by the expansion sleeve type positioning mechanism under the condition of no pressing point, the clamping stability and the processing stability of a workpiece can be ensured, the problems of tool collision caused by poor clamping of the workpiece and defective products caused by poor processing are avoided, and specialized and safe production is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of thin-walled part plane processing lower expansion sleeve type positioning mechanism. BACKGROUND

[0002] At present, when the large plane of thin-walled part is processed, it is generally fixed by clamping side wall, but due to the lack of clamping force caused by the lack of lower pressing point clamping of the large plane of thin-walled part, the problem of tool vibration may occur, and if lower pressing clamping is used, the workpiece may be raised after being stressed. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model aims to overcome the shortcomings of the prior art and provide a thin-walled part plane processing lower expansion sleeve type positioning mechanism, which is reasonable in design and can ensure the stability of workpiece clamping and processing without lower pressing point, thereby avoiding the problems of tool collision and poor processing caused by poor workpiece clamping.

[0004] The utility model adopts the following scheme: a kind of thin-walled part plane processing lower expansion sleeve type positioning mechanism: including rack, the rack is installed with thin-walled part positioning mechanism, expansion sleeve mechanism is installed on the positioning mechanism.

[0005] Further, the rack includes a base, vertically symmetrical vertical side plates are installed on the base, a horizontal mounting plate is transversely arranged between the upper parts of the two vertical side plates, the thin-walled part positioning mechanism includes a special-shaped limiting seat corresponding to the plane of the thin-walled part, and the special-shaped limiting seat is fixed to the horizontal mounting plate.

[0006] Further, the expansion sleeve mechanism includes a plurality of expansion sleeve cylinders vertically arranged corresponding to the fixed holes on the plane of the thin-walled part, an expansion sleeve connecting rod is connected to the telescopic end of the expansion sleeve cylinder, one end of the expansion sleeve connecting rod is inverted conical, the expansion sleeve connecting rod is slidably connected with an expansion sleeve, the expansion sleeve cylinder is installed on the base, and the combination of the expansion sleeve connecting rod and the expansion sleeve penetrates the horizontal mounting plate and the special-shaped limiting seat.

[0007] Further, the special-shaped limiting seat and the horizontal mounting plate are respectively provided with upper and lower connecting holes corresponding to the telescopic end of the expansion sleeve cylinder, the diameter of the upper connecting hole is greater than that of the lower connecting hole, a limiting sleeve is sleeved in the upper connecting hole, one end of the limiting sleeve abuts on the step surface at the joint of the upper and lower connecting holes, the diameter of the inner hole of the limiting sleeve is the same as that of the lower connecting hole, and the expansion sleeve abuts on the end of the limiting sleeve.

[0008] Further, the expansion sleeve comprises a sleeve body, an annular groove is formed in the middle of the outer wall of the sleeve body, a plurality of axial separation grooves are distributed on the circumference of one end of the sleeve body, the separation grooves are communicated with the annular groove, the sleeve body is slidably connected with the expansion sleeve connecting rod, the end of the separation groove of the sleeve body faces the inverted conical end of the expansion sleeve connecting rod, and the sleeve segment with the separation groove on the expansion sleeve extends out of the upper connecting hole.

[0009] Further, the thin-walled part comprises a thin-walled part plate body, two vertical connecting pieces are arranged on one side of the thin-walled part plate body, a connecting seat is arranged between the two connecting pieces, and a positioning hole is formed in the connecting seat.

[0010] Further, a clearance is arranged on the horizontal mounting plate corresponding to the connecting piece and the connecting seat, a positioning column is arranged on the base corresponding to the connecting seat, and a pin shaft is arranged on the positioning column corresponding to the positioning hole.

[0011] Further, a plurality of circular steps are arranged on the lower surface of the thin-walled part plate body corresponding to the expansion sleeve mechanism, and the fixing hole on the thin-walled part plane is formed in the middle of the circular step.

[0012] Further, a limiting step is arranged on the special-shaped limiting seat corresponding to the circular step, and the upper connecting hole corresponding to the fixing hole on the thin-walled part plane is formed in the middle of the limiting step.

[0013] Compared with the prior art, the expansion sleeve type positioning mechanism has the following beneficial effects: the design is reasonable, the overall plane can be machined without pressing points, the clamping stability and machining stability of the workpiece can be ensured, the problems of tool collision and poor machining caused by poor clamping of the workpiece can be avoided, and the production is facilitated and professionalized and safe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Structure diagram of the embodiment of the utility model Figure 1 (remove one vertical side plate);

[0015] Figure 2 Structure diagram of the embodiment of the utility model Figure 2 (remove one vertical side plate);

[0016] Figure 3 Cross-sectional structure diagram of the embodiment of the utility model;

[0017] Figure 4 is Figure 2 enlarged view of A in the middle;

[0018] Figure 5 is Figure 3 enlarged view of B in the middle;

[0019] Figure 6This is a schematic diagram of the thin-walled component structure according to an embodiment of the present utility model.

[0020] In the diagram: 1-Frame; 2-Base; 3-Vertical side plate; 4-Horizontal mounting plate; 5-Irregularly shaped limiting seat; 6-Expansion sleeve cylinder; 7-Expansion sleeve connecting rod; 8-Expansion sleeve; 9-Upper connecting hole; 10-Lower connecting hole; 11-Limiting sleeve; 12-Annular groove; 13-Separating groove; 14-Thin-walled plate; 15-Connector; 16-Connecting seat; 17-Positioning hole; 18-Leaning opening; 19-Positioning post; 20-Pin; 21-Circular step; 22-Limiting step; 23-Fixing hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] like Figures 1-6 As shown, a pull-out expansion sleeve type positioning mechanism for machining thin-walled parts includes a frame 1, on which a thin-walled part positioning mechanism is installed, and an expansion sleeve mechanism is installed on the positioning mechanism. In use, the thin-walled part is placed on the frame and simultaneously snapped onto the thin-walled part positioning mechanism. Finally, the expansion sleeve mechanism connects to the fixing holes on the surface of the thin-walled part to achieve the fixing of the surface of the thin-walled part.

[0025] In this embodiment, for a reasonable design, the frame includes a base 2, on which vertical side plates 3 are symmetrically mounted front and rear. A horizontal mounting plate 4 is placed between the upper parts of the two vertical side plates. The overall fixture is fixed by the base, and then the horizontal mounting plate fixes the thin-walled part processing plane. The thin-walled part positioning mechanism includes an irregularly shaped limiting seat 5 corresponding to the thin-walled part plane. The irregularly shaped limiting seat is fixed to the horizontal mounting plate. In use, the thin-walled part processing plane abuts against the irregularly shaped limiting seat. The shape of the irregularly shaped limiting seat is set to correspond to the shape of the thin-walled part plane. It can also be a flat plate mechanism of other shapes, as long as it can fix the thin-walled part plane.

[0026] In the embodiment, in order to realize the fixation of the sleeve expansion mechanism to the thin-walled part plane, the sleeve expansion mechanism comprises a plurality of sleeve expansion cylinders 6 vertically arranged on the fixing holes on the corresponding thin-walled part plane, a sleeve expansion connecting rod 7 connected to the telescopic end of the sleeve expansion cylinder, the one end of the sleeve expansion connecting rod is inverted conical, the sleeve expansion connecting rod is slidably connected with a sleeve 8, the sleeve expansion cylinder is installed on the base, the combination of the sleeve expansion connecting rod and the sleeve penetrates through the horizontal mounting plate and the special-shaped limiting seat, that is, the telescopic end of the sleeve expansion cylinder penetrates through the horizontal mounting plate and the special-shaped limiting seat, the diameter of the telescopic end of the sleeve expansion cylinder is larger than the diameter of the sleeve expansion connecting rod, the inner hole diameter of the sleeve is the same as the diameter of the non-inverted conical part of the sleeve expansion connecting rod, the inverted conical end of the sleeve expansion connecting rod gradually reduces from the end to the middle part of the sleeve expansion connecting rod, that is, the end is thick, in use, the inverted conical part of the sleeve expansion connecting rod is driven to slide by the telescopic end of the sleeve expansion cylinder, so that the inverted conical end can expand the sleeve, so that the sleeve can fix the fixing hole 23 on the corresponding thin-walled part plane, so the sleeve expansion mechanism also plays a limiting role.

[0027] In the embodiment, in order to further realize the expansion of the sleeve, the telescopic end of the sleeve expansion cylinder is respectively provided with an upper connecting hole 9 and a lower connecting hole 10 which are mutually butted on the special-shaped limiting seat and the horizontal mounting plate, the diameter of the upper connecting hole is larger than the diameter of the lower connecting hole, the upper connecting hole is sleeved with a limiting sleeve 11, one end of the limiting sleeve abuts on the stepped surface at the butting position of the upper connecting hole and the lower connecting hole, the inner hole diameter of the limiting sleeve is the same as the diameter of the lower connecting hole, the sleeve abuts on the end of the limiting sleeve, in use, since the lower end of the sleeve abuts on the limiting sleeve, when the inverted conical end of the sleeve expansion connecting rod is pulled down by the contraction of the telescopic end of the sleeve expansion cylinder, the sleeve has an abutting surface and will not slide down with the contraction of the telescopic end of the sleeve expansion cylinder, and can support the expansion of the sleeve, the specific sleeve structure is that the sleeve comprises a sleeve body, an annular groove 12 is formed in the middle part of the outer wall of the sleeve body, a plurality of separation grooves 13 are circumferentially distributed on one end of the sleeve body and arranged along the axial direction, the separation grooves are communicated with the annular groove, the separation grooves separate the one end of the sleeve body into a plurality of openable and closable blade bodies, the blade bodies are expanded by the inverted conical end to realize fixation, due to the existence of the annular groove, the bending between the root of the blade body and the sleeve body is more smooth, the sleeve body is slidably connected with the sleeve expansion connecting rod, the separation groove end of the sleeve body faces the inverted conical end of the sleeve expansion connecting rod, the sleeve segment with the separation groove on the sleeve extends out of the upper connecting hole, that is, the rotation point of the outward expansion of the blade body of the sleeve is on the end of the connecting hole.

[0028] In the embodiment, the specific structure of the thin-walled part is that the thin-walled part includes a thin-walled part plate body 14, two vertical connecting pieces 15 are arranged on one side of the thin-walled part plate body, a connecting seat 16 is arranged between the two connecting pieces, a positioning hole 17 is formed in the connecting seat, a clearance 18 is arranged on the horizontal mounting plate corresponding to the connecting piece and the connecting seat, that is, when the thin-walled part plate body abuts against the special-shaped limiting seat, the connecting piece and the connecting seat extend into the horizontal mounting plate and the base through the clearance, a positioning column 19 is arranged on the base corresponding to the connecting seat, a pin shaft 20 is arranged on the positioning column corresponding to the positioning hole, the thin-walled part is further fixed by the positioning column abutting against the connecting seat and the pin shaft being clamped into the positioning hole.

[0029] In the embodiment, a plurality of circular steps 21 are arranged on the lower surface of the thin-walled part plate body corresponding to the expansion sleeve mechanism, the fixing holes on the plane of the thin-walled part are formed in the middle of the circular steps, a limiting step 22 is arranged on the special-shaped limiting seat corresponding to the circular step, the upper connecting hole is formed in the middle of the limiting step corresponding to the fixing hole on the plane of the thin-walled part, that is, in use, the thickness of the fixing hole of the thin-walled part plate body is increased through the circular step, so that clamping is more firm, and the alignment of the limiting step and the circular step facilitates observation of whether the initial position of the thin-walled part is accurately aligned.

[0030] If the terms "first", "second" and the like are used herein to qualify elements, those skilled in the art should know that the use of "first", "second" is only for the convenience of distinguishing the elements, and the above terms have no special meaning unless otherwise stated.

[0031] If the present utility model discloses or involves mutually fixed connecting parts or structural parts, then, except otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, using bolt or screw connection), and can also be understood as: non-detachable fixed connection (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by an integral structure (for example, integrally formed by using casting process) (except obviously cannot adopt integral forming process).

[0032] In addition, the position relationship or the like indicated by "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in any of the above technical solutions disclosed by the present utility model is based on the position relationship shown in the drawings, and is only for the convenience of describing the present patent, and does not indicate or imply that the device or element must have a specific position, be constructed and operated in a specific position, so it cannot be understood as a limitation on the present patent, and the shape-related terms used in any of the above technical solutions disclosed by the present utility model include shapes similar, similar or close to the shapes unless otherwise stated.

[0033] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A pull-out expansion sleeve type positioning mechanism for planar machining of thin-walled parts, characterized in that: Includes a frame, on which a thin-walled part positioning mechanism is mounted, and on which an expansion sleeve mechanism is mounted; The frame includes a base, on which vertical side plates are symmetrically mounted front and rear. A horizontal mounting plate is placed between the upper parts of the two vertical side plates. The thin-walled component positioning mechanism includes an irregularly shaped limiting seat corresponding to the plane of the thin-walled component. The irregularly shaped limiting seat is fixed to the horizontal mounting plate. The expansion sleeve mechanism includes several expansion sleeve cylinders with vertically arranged fixing holes corresponding to the plane of the thin-walled parts. An expansion sleeve connecting rod is connected to the telescopic end of the expansion sleeve cylinder. One end of the expansion sleeve connecting rod is inverted conical. An expansion sleeve is slidably connected to the expansion sleeve connecting rod. The expansion sleeve cylinder is installed on the base. The combination of the expansion sleeve connecting rod and the expansion sleeve passes through the horizontal mounting plate and the irregularly shaped limiting seat. The expansion sleeve includes a sleeve body, an annular groove is formed on the middle of the outer wall of the sleeve body, and a number of partition grooves are distributed circumferentially along the axial direction on one end of the sleeve body. The partition grooves are connected to the annular groove. The sleeve body is slidably connected to the expansion sleeve connecting rod, and the partition groove end of the sleeve body faces the inverted conical end of the expansion sleeve connecting rod. The sleeve section with the partition groove on the expansion sleeve extends out of the upper connecting hole.

2. The expansion sleeve positioning mechanism according to claim 1, characterized in that: The irregularly shaped limiting seat and the horizontal mounting plate are respectively provided with upper connecting holes and lower connecting holes corresponding to the telescopic ends of the expansion sleeve cylinder. The diameter of the upper connecting hole is larger than the diameter of the lower connecting hole. A limiting sleeve is sleeved inside the upper connecting hole. One end of the limiting sleeve abuts against the stepped surface at the joint of the upper connecting hole and the lower connecting hole. The diameter of the inner hole of the limiting sleeve is the same as the diameter of the lower connecting hole. The expansion sleeve abuts against the end of the limiting sleeve.

3. The expansion sleeve positioning mechanism according to claim 2, characterized in that: The thin-walled component includes a thin-walled component plate. Two vertical connectors are arranged on one side of the thin-walled component plate. A connecting seat is provided between the two connectors. The connecting seat has a positioning hole.

4. The expansion sleeve positioning mechanism according to claim 3, characterized in that: The horizontal mounting plate has clearance openings for the corresponding connectors and connecting seats, the base has positioning posts for the corresponding connecting seats, and the positioning posts have pins for the corresponding positioning holes.

5. The expansion sleeve positioning mechanism according to claim 4, characterized in that: Several circular steps are provided on the lower surface of the thin-walled component plate corresponding to the expansion sleeve mechanism, and the fixing holes on the plane of the thin-walled component are opened in the middle of the circular steps.

6. The expansion sleeve positioning mechanism according to claim 2, characterized in that: The irregularly shaped limiting seat is provided with a limiting step corresponding to the circular step, and the upper connecting hole is provided with a fixing hole on the plane of the thin-walled part, which is opened in the middle of the limiting step.

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