CN217800254U - Tool for machining thin-wall sleeve excircle for numerical control vertical lathe - Google Patents

Abstract

The utility model belongs to the technical field of machining, a numerical control vertical lathe is with processing thin wall cover excircle frock is related to, including the location base, the lateral wall of location base is provided with flexible location structure, and location base top is rotated and is connected with the cam disc, and the cam disc is provided with eccentric raceway on the surface, and sliding connection has the removal axle on the eccentric raceway, removes the axle and slides along the route of eccentric raceway, removes axle and flexible location structure as an organic whole. The cam disc rotates, the moving shaft slides on the eccentric roller path, and then the telescopic positioning structure is driven to extend out to prop against the inner wall of the thin-wall part, so that the thin-wall part is positioned.

Description

Tool for machining thin-wall sleeve excircle for numerical control vertical lathe

Technical Field

The utility model relates to a processing frock, especially a numerical control merry go round machine is with processing thin wall cover excircle frock belongs to machining technical field.

Background

The turning of the thin-wall sleeve part is always a difficult point for lathe processing, the thin-wall sleeve part is clamped by the automatic centering chuck, and the part is easy to deform under the clamping force of the three clamping jaws because the wall of the workpiece is thin, so that the size precision and the shape precision of the workpiece are influenced, and the roundness error of the part is caused.

In order to reduce the clamping stress deformation of thin-wall parts, an opening transition ring or a method for increasing the contact area between a clamping jaw and a workpiece is often adopted, and the method is suitable for workpieces which are not too thin in wall and are convenient to process in an inner-supporting and outer-clamping mode; and the workpiece is clamped by pressing the end face, the radial clamping is changed into axial pressing, and the part needs to be centered before the pressing by adopting the pressing mode.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a numerical control merry go round machine is with processing thin wall cover excircle frock, the cam disc that is provided with eccentric raceway uses with the cooperation of flexible location structure, carries out three point location to thin wall spare inner wall and supports, improves clamping stability, avoids causing the damage to the thin wall of thin wall spare.

In order to solve the above problems, the specific technical scheme of the utility model is as follows: the tool for machining the thin-wall sleeve outer circle for the numerical control vertical lathe comprises a positioning base, wherein a telescopic positioning structure is arranged on the side wall of the positioning base, a cam disc is rotatably connected above the positioning base, an eccentric raceway is arranged on the surface of the cam disc, a moving shaft is connected onto the eccentric raceway in a sliding mode and slides along the path of the eccentric raceway, and the moving shaft and the telescopic positioning structure are of an integral structure. The cam disc rotates, the moving shaft slides on the eccentric roller path, and then the telescopic positioning structure is driven to extend out to abut against the inner wall of the thin-wall part, so that the thin-wall part is positioned.

The telescopic positioning structure comprises: the lateral wall of location base is provided with the round pin shaft hole, and the round pin shaft is downthehole to be inserted and to have just fixed a position the axle, removes axle and just fixed connection of location axle.

An upper bearing seat is connected above the cam disc, and a pressing assembly is fixedly connected with the upper end face of the bearing seat. The pressing assembly presses the end face of the thin-wall part tightly, and the thin-wall part is further stabilized.

The positioning base is rotationally connected with the cam disc through a positioning rotating shaft.

The side surface of the positioning base is evenly provided with three pin shaft holes along the circumferential direction.

The number of the eccentric roller paths is three, and the eccentric roller paths are uniformly distributed on the cam disc.

The number of the moving shafts is also three, and the three moving shafts are respectively arranged in the three eccentric roller paths.

The pressing component comprises one or more groups of hook-shaped pressing plate components, and the hook elements of the hook-shaped pressing plate components used in the group are arranged oppositely.

The hook-shaped pressing plate assembly is composed of a telescopic column and a pressing plate, the telescopic column is vertically arranged on the end face of the upper bearing seat, the pressing plate is vertically arranged on the upper end face of the telescopic column, and the telescopic column and the pressing plate are vertically arranged and connected through bolts. The setting of flexible post can improve the frock suitability according to the arbitrary regulation of the height of thin wall spare.

The utility model discloses the beneficial effect who brings does: by using the tool, the excircle of the thin-wall part can be stably processed, the requirement of a part drawing can be effectively met, and the clamping deformation can not occur.

Drawings

FIG. 1 is a schematic structural diagram of a tool for machining a thin-wall sleeve excircle for a numerical control vertical lathe.

Fig. 2 is a schematic view of a cam plate configuration.

Fig. 3 is a schematic view of a positioning base structure.

The device comprises a transition plate 1, a positioning base 2, a primary positioning shaft 3, a moving shaft 4, a cam plate 5, an upper bearing seat 6, a positioning rotating shaft 7, a hook-shaped pressing plate component 8, a pressing plate surface 8-1, a telescopic column 8-2, a pressing plate 8-3, a pin shaft hole 9, an eccentric roller path 10 and a workpiece 11.

Detailed Description

As shown in figure 1, the tool for processing the thin-wall outer circle sleeve for the numerical control vertical lathe comprises a positioning base 2, a pin shaft hole 9 is formed in the side wall of the positioning base 2, a primary positioning shaft 3 is inserted into the pin shaft hole 9, a positioning rotating shaft 7 is connected to the positioning base 2, an eccentric raceway 10 is arranged on the surface of the cam disc 5, a moving shaft 4 moves in the eccentric raceway 10, the moving shaft 4 and the primary positioning shaft 3 are of an integral structure and are fixedly connected through screws, an upper bearing seat 6 is connected above the cam disc 5, one or more groups of hook-shaped pressure plate assemblies 8 are fixedly connected to the upper end face of the bearing seat 6, hook-shaped pressure plate assemblies 8 used in groups are arranged in a reverse mode, the positioning base 2 is fixedly connected with a transition disc 1 through bolts, the tool for processing the thin-wall outer circle sleeve for the numerical control vertical lathe is installed on a main shaft of the vertical lathe through the transition disc 1, the workpiece 11 is a thin-wall part and is sleeved on the outer side of the positioning base 2, a distance is reserved between the workpiece 11 and the positioning base, the upper end face of the workpiece 11 is in contact with a pressing plate face 8-1 of the hook-shaped pressing plate component 8, the positioning rotating shaft 7 is rotated manually to drive the cam disc 5 to rotate, further, the moving shaft 4 is driven to slide in the eccentric rolling path 10, the distance between the initial end and the tail end of the eccentric rolling path 10 and the circle center of the cam disc 5 is different, the moving shaft 4 moves to a position in the eccentric rolling path 10 far away from the circle center of the cam disc 5, the moving shaft 4 drives the initial positioning shaft 3 to extend out of the pin hole shaft 9 and push against the inner wall of the workpiece 11 to center the workpiece 11, then the hook-shaped pressing plate component 8 is locked to fix the position of the workpiece 11, the outer circle of the thin-wall part can be stably machined, the part drawing requirements can be met, and the situation of clamping and deformation cannot occur.

As shown in fig. 2 and 3, the three pin shaft holes 9 are uniformly distributed on the outer side surface of the positioning base 2, the three eccentric raceways 10 are uniformly distributed on the cam disc 5, and the three moving shafts 4 are respectively arranged in the three eccentric raceways 10 to position the workpiece 11 at three points, thereby ensuring the positioning stability of the workpiece 11, avoiding the problems of unstable positioning and incorrect position of the workpiece 11, and improving the positioning stability.

The hook-shaped pressure plate assembly 8 is composed of a telescopic column 8-2 and a pressing plate 8-3, the telescopic column 8-2 is vertically arranged on the end face of the upper bearing seat 6, the pressing plate 8-3 is vertically arranged on the upper end face of the telescopic column 8-2 and is connected with the upper end face of the telescopic column 8-2 through a bolt, the positions of the pressing plate 8-3 and the telescopic column 8-2 are locked through the bolt, the axes of the telescopic columns 8-2 of the two hook-shaped pressure plate assemblies 8 arranged in groups are arranged in parallel, and the height of the telescopic column 8-2 is adjusted according to the height of a workpiece 11.

What has been described above is merely a preferred embodiment of the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications and improvements can be made, and shall be considered as belonging to the protection scope of the present invention.

Claims (9)

1. Numerical control merry go round machine is with processing thin wall cover excircle frock, its characterized in that: the positioning device comprises a positioning base (2), a telescopic positioning structure is arranged on the side wall of the positioning base (2), a cam disc (5) is rotatably connected above the positioning base (2), an eccentric raceway (10) is arranged on the surface of the cam disc (5), a moving shaft (4) is connected on the eccentric raceway (10) in a sliding manner, the moving shaft (4) slides along the path of the eccentric raceway (10), and the moving shaft (4) and the telescopic positioning structure are of an integral structure.

2. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 1, characterized in that: the telescopic positioning structure comprises: the side wall of the positioning base (2) is provided with a pin shaft hole (9), a primary positioning shaft (3) is inserted into the pin shaft hole (9), and the movable shaft (4) is fixedly connected with the primary positioning shaft (3).

3. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 1, characterized in that: an upper bearing seat (6) is connected above the cam disc (5), and a pressing assembly is fixedly connected to the upper end face of the bearing seat (6).

4. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 1, characterized in that: the positioning base (2) is rotationally connected with the cam disc (5) through a positioning rotating shaft (7).

5. The numerical control vertical lathe outer circle machining tool for the thin-wall sleeve as claimed in claim 2, characterized in that: the side surface of the positioning base (2) is uniformly provided with three pin shaft holes (9) along the circumferential direction.

6. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 1, characterized in that: the number of the eccentric roller paths (10) is three, and the eccentric roller paths are uniformly distributed on the cam disc (5).

7. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 1, characterized in that: the number of the moving shafts (4) is three, and the three moving shafts are respectively arranged in the three eccentric roller paths (10).

8. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 3, characterized in that: the pressing component comprises one or more hook-shaped pressing plate components (8), and the hook parts of the hook-shaped pressing plate components (8) used in groups are arranged oppositely.

9. The numerical control vertical lathe tool for machining the thin-wall sleeve outer circle as claimed in claim 8, characterized in that: the hook-shaped pressing plate assembly (8) is composed of a telescopic column (8-2) and a pressing plate (8-3), the telescopic column (8-2) is vertically arranged on the end face of the upper bearing seat (6), the pressing plate (8-3) is vertically arranged on the upper end face of the telescopic column (8-2), and the telescopic column and the pressing plate are vertically arranged and connected through bolts.

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