CN211681776U

CN211681776U - Tensioning tool for coaxial combined workpiece

Info

Publication number: CN211681776U
Application number: CN202020086935.7U
Authority: CN
Inventors: 周磊
Original assignee: Zhengzhou Xintai Precision Measuring Instrument Co ltd
Current assignee: Zhengzhou Xintai Precision Measuring Instrument Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-16
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a tensioning tool for coaxial combined workpieces, which provides a scheme aiming at the problem of low assembly coaxiality in the prior art, and comprises a working table frame and a pressing and forcing mechanism, wherein a tensioning assembly is arranged between the working table frame and the pressing and forcing mechanism, the tensioning assembly comprises a central part and an annular edge part, the deformation direction of the central part points to the edge from the center of the tensioning assembly, and the deformation direction of the annular edge part points to the center from the edge of the tensioning assembly; a working chamber for accommodating the coaxial combination workpiece is formed between the central member and the annular edge member. The coaxial combined workpiece has the advantages that the outward expanding central part and the inward contracting annular edge part limit all parts of the coaxial combined workpiece on one axis. When the workpiece is assembled, the parts are placed into the working cavity one by one, and the tensioning assembly clamps the parts under the action of the pressing and forcing mechanism, so that the assembly operation can be performed, and manual correction is completely not needed. The coaxiality of the assembled workpiece can be improved, and the assembly efficiency is also effectively improved.

Description

Tensioning tool for coaxial combined workpiece

Technical Field

The utility model relates to a tight device that rises especially relates to a coaxial combination work piece tight frock that rises.

Background

When two workpieces need to be coaxially combined, the two workpieces are generally spliced by hands and then fixed with each other through bolts. When the sub-frame 11 and the support ring 12 shown in fig. 1 and 2 are assembled, the sub-frame 11 is attached to the support ring 12, and then the coaxiality of the sub-frame and the support ring is visually judged, and bolts are installed in the corresponding installation holes to fix the sub-frame and the support ring. The coaxial combined workpiece shown in fig. 3 and 4 is obtained. However, the method cannot be applied to a precise machining scene by visual inspection, is particularly unsuitable for workpieces with high coaxiality requirements, and is low in efficiency because the coaxiality is adjusted by hands each time. A coaxial combined workpiece mounting tool with high coaxiality and high efficiency is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model aims to provide a coaxial combination work piece rises and tightly installs to improve coaxial combination work piece's assembly axiality and efficiency.

The utility model discloses a coaxial combination work piece tight frock that rises, including a work bench and pressure force mechanism, set up a tight subassembly that rises between work bench and the pressure force mechanism, the tight subassembly that rises includes central part and cyclic annular edge part, the central part deformation direction is by the center point edge of tight subassembly that rises, cyclic annular edge part deformation direction is by the edge point center of tight subassembly that rises; the central member and the annular edge member define a working chamber therebetween for receiving a coaxial composite workpiece.

A coaxial combination work piece tight frock that rises, its advantage lies in, the central part that expands outward and the cyclic annular edge part of adduction are spacing on an axis with each part of coaxial combination work piece. When the workpiece is assembled, the parts are placed into the working cavity one by one, and the tensioning assembly clamps the parts under the action of the pressing and forcing mechanism, so that the assembly operation can be performed, and manual correction is completely not needed. The coaxiality of the assembled workpiece can be improved, and the assembly efficiency is also effectively improved.

The tensioning assembly comprises a tensioning ring, a pressing ring, an expansion part and an expansion sleeve; the tightening ring is arranged on the working table frame, the edge of the tightening ring extends out of the first sloping table towards the pressing mechanism, and the center of the tightening ring is fixedly provided with an expansion part; the expansion sleeve is sleeved on the expansion part; a second inclined platform extends from the side surface of the pressing ring close to the tightening ring; when the second inclined table is in contact with the inclined plane of the first inclined table, a gap is reserved between the end surfaces of the tightening ring and the pressing ring; the end surfaces of the expansion sleeve and the pressure forcing ring, which are far away from the tightening ring, are connected with the pressure forcing mechanism; the working cavity is formed between the outer side wall of the expansion sleeve and the inner side wall of the pressure forcing ring.

And the edge positions of the pressure forcing ring and the tightening ring are provided with return springs, one end of each return spring is connected with the pressure forcing ring, and the other end of each return spring is connected with the return spring.

The pressing and forcing mechanism comprises a power cylinder, a pull rod, a connecting plate, a pull arm and a pressing arm; the power cylinder is arranged in the working rack, one end of the pull rod is arranged at the power output end of the power cylinder, and the other end of the pull rod extends through the working rack and then is connected with the central part of the tensioning assembly; the middle part of the connecting plate is penetrated by the pull rod and is fixedly connected with the pull rod, and the edge of the connecting plate is provided with a pull arm; one end of the pull arm is fixedly connected with the connecting plate, and the other end of the pull arm penetrates through the workbench frame and then freely extends towards the tensioning assembly; the free end of the pull arm is provided with a pressing arm, the pressing arm extends towards the center of the tensioning assembly, and the lower end face of the pressing arm is connected with the annular edge part of the tensioning assembly.

A plurality of optical axes are arranged in the workbench frame, and the optical axes are parallel to the pull rod; the position of the connecting plate corresponding to the optical axis is penetrated by the optical axis, and a linear bearing is arranged to be connected with the corresponding optical axis.

The workbench frame comprises a bottom plate and a panel which are horizontally arranged, and a plurality of supporting columns which are used for uniformly supporting the bottom plate and the panel.

And interference holes are formed in the bottom surface of the working cavity.

Drawings

FIG. 1 is a schematic diagram of a prior art sub-frame;

FIG. 2 is a schematic view of a prior art support ring construction;

FIG. 3 is a schematic structural view of a coaxial combined workpiece obtained by installing the auxiliary frame and the support ring;

fig. 4 is a cross-sectional view of the coaxial composite workpiece of fig. 3.

Fig. 5 is a schematic structural view of the tensioning tool of the present invention;

FIG. 6 is a top view of the tensioning tool of FIG. 5;

fig. 7 is a schematic structural view of the expansion sleeve of the present invention.

Reference numerals: 11-auxiliary frame, 12-supporting ring; 201-base plate, 202-pillar, 203-face plate, 204-optic axis; 211-connecting plate, 212-linear bearing, 213-pull arm, 214-pressing arm, 215-power cylinder and 216-pull rod; 31-a tightening ring, 32-a pressing ring, 33-a return spring, 34-an expansion part and 35-an expansion sleeve.

Detailed Description

As shown in fig. 5-7, a coaxial combination work piece tight frock that rises include a work bench and press and force the mechanism, the work bench with press and force and set up a tight subassembly that rises between the mechanism, the tight subassembly that rises includes central part and cyclic annular edge part, central part deformation direction is by the directional edge in center of the tight subassembly that rises, cyclic annular edge part deformation direction is by the directional center in edge of the tight subassembly that rises. The central member and the annular edge member define a working chamber therebetween for receiving a coaxial composite workpiece.

The tensioning assembly comprises a tensioning ring 31, a pressing ring 32, a return spring 33, an expansion part 34 and an expansion sleeve 35. The pressing and pressing mechanism comprises a connecting plate 211, a linear bearing 212, a pull arm 213, a pressing arm 214, a power cylinder 215 and a pull rod 216. The workbench comprises a bottom plate 201 and a panel 203 which are horizontally arranged, and a plurality of struts 202 for uniformly supporting the bottom plate 201 and the panel 203. The tightening ring 31, the pressing ring 32, the expansion part 34, the expansion sleeve 35 and the pull rod 216 are all coaxially arranged. The central member is an expansion sleeve 35 and the annular edge member is a compression ring 32.

The tightening ring 31 is arranged on the upper end face of the panel 203, a first inclined table extends upwards from the edge of the tightening ring 31, and the inner side face of the first inclined table is tightened from top to bottom towards the center. The expansion part 34 is arranged at the center of the tightening ring 31, and the outer side surface expands in the direction away from the center from top to bottom. The expansion sleeve 35 is sleeved on the expansion part 34, and the upper end of the pull rod 216 sequentially penetrates through the panel 203, the expansion part 34 and the expansion sleeve 35 and is fixedly connected with the expansion sleeve 35 through a bolt.

And a second inclined table extends from the side surface of the pressing and forcing ring 32 close to the tightening ring 31, and the outer side surface of the second inclined table is contracted from top to bottom towards the center. When the outer side surface of the second sloping platform is contacted with the inner side surface of the first sloping platform, a gap is reserved between the opposite end surfaces of the tightening ring 31 and the pressing ring 32. The upper end surface of the pressing ring 32 is connected with the lower end surface of the pressing arm 214. The working cavity is formed between the outer side wall of the expansion sleeve 35 and the inner side wall of the pressure forcing ring 32. The bottom surface of the working cavity is provided with an interference hole for avoiding the tail part of a bolt which may penetrate through the workpiece when the workpiece is assembled. The return spring 33 is arranged in the gap between the edges of the tightening ring 31 and the pressing ring 32, one end of the return spring is connected with the pressing ring 32, and the other end of the return spring is connected with the return spring 33. The pressing ring 32 is made of flexible material, such as rubber, silicon gel or plastic.

The power cylinder 215 is arranged on the bottom plate 201, and one end of the pull rod 216 far away from the expansion sleeve 35 is arranged at the power output end of the power cylinder 215. The power cylinder 215 may be a pneumatic cylinder, a hydraulic cylinder, or the like. The middle part of the connecting plate 211 is penetrated by the pull rod 216 and is fixedly connected with the pull rod 216, and the edge of the connecting plate is provided with a pull arm 213. One end of the pull arm 213 is fixedly connected to the connection plate 211, and the other end passes through the panel 203 and freely extends upwards. The free end of the pull arm 213 is provided with a pressing arm 214, the pressing arm 214 extends towards the center of the tensioning assembly, and the lower end surface is connected with the upper end surface of the pressing ring 32. A plurality of optical axes 204 are arranged in the workbench frame, and the optical axes 204 are arranged in parallel with the pull rod 216. The connecting plate 211 is penetrated by the optical axis 204 at a position corresponding to the optical axis 204, and a linear bearing 212 is arranged to be connected with the corresponding optical axis 204.

Coaxial combination work piece rise tight frock theory of operation: taking the assembly of the auxiliary frame 11 and the support ring 12 as an example, a person skilled in the art can use the tensioning tool for the assembly of other parts having a central hole and being centrosymmetric without creative labor. The support ring 12 is first placed in the working chamber and then the subframe 11 is placed over the support ring 12. Wherein the center hole of each of the subframe 11 and the support ring 12 passes through the expansion sleeve 35. Actuating cylinder 215 pulls down tie rod 216. The bolts at the top ends of the pressing arm 214 and the pull rod 216 press the pressing ring 32 and the expansion sleeve 35 downward, respectively, to tighten the pressing ring 32 inward to clamp the outer edge of the support ring 12, and to expand the expansion sleeve 35 outward to expand the inner edge of the tension subframe 11. At this time, the support ring 12 is coaxial with the pressure ring 32, the auxiliary frame 11 is coaxial with the expansion sleeve 35, and the pressure ring 32 and the expansion sleeve 35 are coaxially arranged, so that the support ring 12 and the auxiliary frame 11 are certainly coaxial, and the coaxiality does not need to be visually observed and corrected manually. The sub-frame 11 and the support ring 12 are fixed by bolts to obtain a coaxial combined workpiece. Finally, the tension of the power cylinder 215 is released, and the pressing ring 32 and the expansion sleeve 35 move upwards under the action of the return spring 33, so that the clamping force on the workpiece is released, and the workpiece with high coaxiality can be taken out.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A tensioning tool for coaxial combined workpieces is characterized by comprising a working table frame and a pressing and forcing mechanism, wherein a tensioning assembly is arranged between the working table frame and the pressing and forcing mechanism and comprises a central part and an annular edge part, the deformation direction of the central part points to the edge from the center of the tensioning assembly, and the deformation direction of the annular edge part points to the center from the edge of the tensioning assembly; the central member and the annular edge member define a working chamber therebetween for receiving a coaxial composite workpiece.

2. The tensioning tool for the coaxial combined workpiece according to claim 1, wherein the tensioning assembly comprises a tightening ring (31), a pressing ring (32), an expansion part (34) and an expansion sleeve (35); the tightening ring (31) is arranged on the working table frame, the edge of the tightening ring (31) extends out of the first sloping platform towards the pressing mechanism, and the center of the tightening ring is fixedly provided with an expansion part (34); the expansion sleeve (35) is sleeved on the expansion part (34); a second inclined table extends from the side surface of the pressing ring (32) close to the tightening ring (31); when the second inclined table is in contact with the inclined surface of the first inclined table, a gap is reserved between the end surfaces of the tightening ring (31) and the pressing ring (32); the end surfaces of the expansion sleeve (35) and the pressure ring (32) far away from the tightening ring (31) are connected with the pressure mechanism; the working cavity is formed between the outer side wall of the expansion sleeve (35) and the inner side wall of the compression ring (32).

3. The tensioning tool for the coaxial combined workpiece according to claim 2, wherein a return spring (33) is arranged at the edge of the pressing and pressing ring (32) and the tightening ring (31), one end of the return spring (33) is connected with the pressing and pressing ring (32), and the other end of the return spring is connected with the return spring (33).

4. The tensioning tool for the coaxial combined workpiece according to claim 1, wherein the pressure forcing mechanism comprises a power cylinder (215), a pull rod (216), a connecting plate (211), a pull arm (213) and a pressing arm (214); the power cylinder (215) is arranged in the working stand, one end of the pull rod (216) is arranged at the power output end of the power cylinder (215), and the other end of the pull rod extends through the working stand and then is connected with the central part of the tensioning assembly; the middle part of the connecting plate (211) is penetrated by the pull rod (216) and is fixedly connected with the pull rod (216), and the edge of the connecting plate is provided with a pull arm (213); one end of the pull arm (213) is fixedly connected with the connecting plate (211), and the other end of the pull arm penetrates through the workbench frame and then freely extends towards the tensioning assembly; the free end of the pull arm (213) is provided with a pressing arm (214), the pressing arm (214) extends towards the center of the tensioning assembly, and the lower end face of the pressing arm is connected with the annular edge part of the tensioning assembly.

5. The tensioning tool for the coaxial combined workpiece according to claim 4, wherein a plurality of optical axes (204) are arranged in the workbench frame, and the optical axes (204) are arranged in parallel with the pull rod (216); the position of the connecting plate (211) corresponding to the optical axis (204) is penetrated by the optical axis (204), and a linear bearing (212) is arranged to be connected with the corresponding optical axis (204).

6. The tensioning tool for the coaxial combined workpiece according to any one of claims 1 to 5, wherein the workbench comprises a bottom plate (201) and a face plate (203) which are horizontally arranged, and a plurality of pillars (202) for uniformly supporting the face plate (203) and the bottom plate (201).

7. The tightening tool for the coaxial combined workpiece according to claim 6, wherein the bottom surface of the working cavity is provided with an interference hole.