CN215788325U

CN215788325U - Zero point positioning system adopting pushing, overturning, pressing and locking

Info

Publication number: CN215788325U
Application number: CN202121999497.4U
Authority: CN
Inventors: 潘洁清; 王正洪; 周繁华; 王寿灵; 方许波; 王正龙; 梅亮; 余满满; 周炜飞; 许海宁; 张允胜; 程瑶
Original assignee: Hangzhou Waring Mechanical And Electrical Co ltd
Current assignee: Hangzhou Waring Mechanical And Electrical Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-11
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to a zero point positioning system adopting pushing, overturning, pressing and locking, which solves the problem that the existing zero point mechanism does not have the effect of performing inclination correction on a zero point pin. The middle shaft of the shell of the device is provided with a middle hole for clamping a zero point pin, the upper end of the middle hole is a big-end-up taper hole, a plurality of turnover locking blocks capable of swinging up and down are uniformly arranged on the circumference of the hole wall of the middle hole, a reset spring for upwards turning over and resetting the turnover locking blocks is arranged on the shell, a push rod for horizontally or vertically pushing the turnover locking blocks is arranged inside the shell, the outer end of the push rod is provided with a compression spring, and a loosening gas circuit for reversely pushing the push rod is further arranged on the shell. The utility model adopts the turnover locking block which is turned over and pressed downwards, has clamping and positioning effects on the zero point pin, and can correct the deviation of the zero point pin with inclination deviation.

Description

Zero point positioning system adopting pushing, overturning, pressing and locking

Technical Field

The utility model belongs to the field of clamping and positioning tools, relates to a zero point positioning tool, and particularly relates to a zero point positioning system adopting pushing, overturning, pressing and locking.

Background

The machining process generally requires the selection of a suitable tooling fixture to clamp the workpiece to be machined. Traditional universal fixturing adopts the claw dish to press from both sides and holds the work piece, when the work piece need advance in different processes, often need the centre gripping again, measure the location, even so, its positioning accuracy often is lower, can not satisfy the demand of high accuracy processing.

The zero point positioning system is a novel positioning fixture applied to clamping and positioning of high-precision workpieces in recent years, determines the zero point of the workpiece to be machined, and is provided with a zero point pin, when different machine tools and processes are transferred, the zero point pin is clamped into the zero point positioning system, so that the workpiece can be rapidly found and clamped, the zero point positioning is completed, the positioning time is saved, and the production efficiency is improved. The existing zero-point clamping structure generally adopts a clamping mode that a spring pushes a piston, and the piston synchronously pushes balls in all directions, for example, a Chinese patent No. CN207824499U published in 2018, 9, 7 and named as a machining center zero-point positioning system. This structure adopts the ball to carry out zero point location from the mode of each other centre gripping, because the ball has the roll nature, and the ball is radial centre gripping, and extrudees fixedly through spherical surface, and is very little to the axial force of zero point round pin, if there is certain slope when zero point round pin inserts, the ball has decided its effect that does not possess the correction slope to the characteristics that zero point round pin axial force is little, is unfavorable for the accuracy of zero point round pin location, and the original intention of accomplishing fast, the high accuracy processing through zero point round pin is contradictory.

Disclosure of Invention

The utility model aims to solve the problems that the existing zero point mechanism clamps a zero point pin by radial stress application of a ball, has small axial force on the zero point pin and does not have the effect of correcting the inclination of the zero point pin, and provides a zero point positioning system adopting pushing, turning, pressing and locking.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an adopt and promote upset push down zero point positioning system of locking, includes discoid casing, and the casing axis is provided with the mesopore that the card established the zero point round pin, its characterized in that: the mesopore upper end is big-end-up's taper hole down, and mesopore pore wall ring week evenly is equipped with a plurality of luffing motion's upset latch segment, is equipped with the reset spring that resets the upset latch segment upwards on the casing, the inside ejector pin with upset latch segment one-to-one of casing, ejector pin along the radial setting of casing, the upset latch segment is established on the ejector pin inner end top, is equipped with first compression spring between ejector pin outer end and the casing, still be equipped with on the casing with the ejecting gas circuit of loosening of ejector pin to the outer end, loosen the gas circuit and set up and connect to every ejector pin department at casing internal ring shape. What this scheme adopted is that promote upset latch segment with the ejector pin, the location annular of zero point round pin is pushed down in upset latch segment from all directions of ring week, because the upset latch segment has decurrent axial downforce, the tapering of cooperation mesopore can firmly be with zero point round pin centre gripping in the well of casing downthehole, simultaneously, because the afterburning direction of upset latch segment is axial downforce, if there is certain slope deviation when zero point round pin inserts, the upset latch segment of zero point round pin upwarp one side can utilize axial downforce to rectify for zero point round pin, make zero point round pin be in the centering position. This scheme is reducing to push rod power for axial overdraft, not only has the tight location effect of clamp to the zero point round pin, can rectify the correction to the zero point round pin of slope deviation moreover.

Preferably, the ejector rod is a stepped rod with a large outer end and a small inner end, a stepped hole which is matched with the ejector rod and has a large outer end and a small inner end is arranged in the shell, an ejector rod outer sealing ring is arranged between the inner end of the ejector rod and the small end of the stepped hole, an ejector rod inner sealing ring is arranged between the outer end of the ejector rod and the large end of the stepped hole, and the loosening air path is arranged at a step of the stepped hole of the shell.

Preferably, the stepped hole is a through hole radially penetrating through the housing, the outer end of the stepped hole is provided with an internal thread and a threaded plug, and the threaded plug extrudes the outer end of the first compression spring.

Preferably, the shell comprises an upper cover and a bottom plate which are buckled up and down, the turnover locking block is arranged on the bottom plate, and the reset spring is arranged between the bottom plate and the lower wall of the turnover locking block.

Preferably, the loosening air passage is arranged on the bottom surface of the upper cover, and the bottom plate and the splicing surface of the upper cover are respectively provided with an annular bottom inner sealing ring and an annular bottom outer sealing ring on the inner side and the outer side of the loosening air passage.

The other technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides an adopt and promote upset push down zero point positioning system of locking, includes discoid casing, and the casing axis is provided with the mesopore that the card established the zero point round pin, its characterized in that: the utility model discloses a piston, including mesopore upper end, the pore wall of mesopore is equipped with the piston, the piston is equipped with the annular setting, the piston is equipped with the annular groove between the outside including piston upper portion, cut apart into piston inner ring and piston outer loop with piston upper portion, the casing is equipped with the annular convex part of embedding annular groove, and upset latch segment is established on the piston inner ring top, forms annular gas circuit of loosening between piston outer loop upper portion and the casing. The scheme adopts the annular piston as the pushing piece of the turnover locking block, has good synchronism in all directions and consistent thrust, not only has clamping and positioning effects on the zero-point pin, but also can correct the deviation of the zero-point pin with the inclination deviation.

Preferably, a piston inner sealing ring is arranged between the inner wall of the piston outer ring and the shell, and a piston outer sealing ring is arranged between the outer wall of the piston outer ring and the shell.

Preferably, the piston is embedded between the upper cover and the bottom plate, and the second compression spring is arranged between the bottom plate and the bottom surface of the piston.

Preferably, the bottom surface of the piston is a hollow groove, and the top end of the second compression spring is inserted into the hollow groove of the bottom surface of the piston.

The utility model adopts the turnover locking block which is turned over and pressed downwards, has clamping and positioning effects on the zero point pin, and can correct the deviation of the zero point pin with inclination deviation.

Drawings

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a first external structural diagram of the present invention.

Fig. 2 is a bottom view of the structure of fig. 1 in accordance with the present invention.

FIG. 3 is a cut-away view in one direction of the FIG. 1 structure of the present invention.

Fig. 4 is another directional cut-away view of the structure of fig. 1 of the present invention.

Fig. 5 is an exploded view of the structure of fig. 1 in accordance with the present invention.

Fig. 6 is a second external structural diagram of the present invention.

Fig. 7 is a cut-away view in one direction of the structure of fig. 6 of the present invention.

Fig. 8 is another directional cut-away view of the fig. 6 construction of the present invention.

Fig. 9 is an exploded view of the structure of fig. 6 in accordance with the present invention.

In the figure: 1. an upper cover; 2. a top rod; 3. a first compression spring; 4. a threaded plug; 5. turning over the locking block; 6. a base plate; 7. the bottom is externally sealed; 8. a bottom inner seal ring; 9. the outer sealing ring of the ejector rod; 10. an inner sealing ring of the ejector rod; 11. mounting bolts on the bottom plate; 12. mounting bolts on the upper cover; 13. a zero point pin; 14. a return spring; 15. loosening the gas circuit; 16. a piston; 17. a second compression spring; 18. the piston outer sealing ring; 19. and a piston inner sealing ring.

Detailed Description

The utility model is further illustrated by the following specific examples in conjunction with the accompanying drawings.

Example 1: a horizontal push-turn push-down locking zero point positioning system, as shown in fig. 1-5. As shown in fig. 1 and 2, the device comprises a disc-shaped shell, wherein a middle hole for clamping a zero point pin is formed in a middle shaft of the shell, and the upper end of the middle hole is a taper hole with a large upper end and a small lower end. The shell comprises an upper cover 1 and a bottom plate 6 which are buckled up and down. As shown in fig. 3, 4 and 5, a plurality of turnover locking blocks 4 capable of swinging up and down are uniformly arranged on the periphery of the hole wall of the middle hole, a reset spring 14 for upwards turning over and resetting the turnover locking blocks is arranged on the shell, the turnover locking blocks are arranged on the bottom plate 6, and the reset spring 14 is arranged between the bottom plate and the lower wall of the turnover locking blocks. The inside of casing upper cover and the ejector pin 2 of upset latch segment one-to-one, ejector pin 2 radially sets up along the casing, and upset latch segment 4 is established to 2 inner ends tops of ejector pin, is equipped with first compression spring 3 between ejector pin outer end and the casing, still be equipped with on the casing with the ejecting gas circuit 15 of loosing to the outer end of ejector pin, loosen the gas circuit and set up and connect to every ejector pin department at casing internal ring. The loosening air passage 15 is arranged on the bottom surface of the upper cover 1, and the bottom plate 6 and the splicing surface of the upper cover 1 are respectively provided with an annular bottom inner sealing ring 8 and an annular bottom outer sealing ring 7 on the inner side and the outer side of the loosening air passage 15. The ejector rod 2 is a step rod with a large outer end and a small inner end, a step hole which is matched with the ejector rod and has a large outer end and a small inner end is arranged in the upper sea of the shell, the step hole is a through hole which radially penetrates through the shell, an inner thread is arranged at the outer end of the step hole, a threaded plug 4 is screwed on the outer end of the step hole, and the outer end of the first compression spring 3 is extruded by the threaded plug. An ejector rod outer sealing ring 9 is arranged between the inner end of the ejector rod and the small end of the step hole, an ejector rod inner sealing ring 10 is arranged between the outer end of the ejector rod and the large end of the step hole, the loosening air channel 15 is arranged at the step of the step hole of the shell, and an interface for loosening the air channel 15 is arranged on the side wall of the shell.

As shown in fig. 4 and 5, the bottom plate 6 is uniformly provided with 6 bottom plate mounting bolts 11 fixed with the upper cover 1 around the circumference. The periphery of the upper cover 1 is provided with a convex edge, 6 through holes are uniformly formed in the convex edge, the through holes and the ejector rods are alternately and uniformly arranged, and the through holes are internally provided with upper cover mounting bolts 12. The through hole is a counter bore, and the bottom plate mounting bolt 11 and the upper cover mounting bolt 12 are both hexagon socket head cap bolts.

Example 2: a vertical push-turn push-down locking zero point positioning system is shown in figures 6-9. As shown in fig. 6, the device comprises a disc-shaped shell, wherein a middle hole for clamping a zero point pin is formed in a middle shaft of the shell, and the upper end of the middle hole is a taper hole with a large upper end and a small lower end. As shown in fig. 7 and 8, a plurality of tilting locking blocks 4 capable of swinging up and down are uniformly arranged on the circumference of the hole wall of the middle hole, a reset spring 14 for resetting the tilting locking blocks 4 in an upward tilting manner is arranged on the shell, the shell comprises an upper cover 1 and a bottom plate 6 which are buckled up and down, the tilting locking blocks 4 are arranged on the bottom plate 6, and the reset spring 14 is arranged between the bottom plate and the lower wall of the tilting locking blocks. . And a piston 16 which slides upwards and downwards along the axial direction is arranged in the shell, the piston is arranged in an annular shape, and a second compression spring 17 is arranged between the lower end of the piston and the shell. The piston 16 is embedded between the upper cover 1 and the bottom plate 6, and the second compression spring 17 is disposed between the bottom plate 6 and the bottom surface of the piston 16. The piston bottom surface 16 is a hollow groove, and the top end of the second compression spring 17 is inserted into the hollow groove of the piston bottom surface. An annular groove is formed between the inner side and the outer side of the upper portion of the piston 16, the upper portion of the piston is divided into a piston inner ring and a piston outer ring, a ring convex portion embedded into the annular groove is arranged on the upper cover of the shell, the piston inner ring is provided with a turnover locking block 4 in a propping mode, an annular loosening air passage 15 is formed between the upper portion of the piston outer ring and the shell, a piston inner sealing ring 19 is arranged between the inner wall of the piston outer ring and the shell, and a piston outer sealing ring 18 is arranged between the outer wall of the piston outer ring and the shell.

As shown in fig. 9, the bottom plate 6 is uniformly provided with 6 bottom plate mounting bolts 11 fixed with the upper cover 1 around the circumference. The periphery of the upper cover 1 is provided with a convex edge, 6 through holes are uniformly formed in the convex edge, the through holes and the ejector rods are alternately and uniformly arranged, and the through holes are internally provided with upper cover mounting bolts 12. The through hole is a counter bore, and the bottom plate mounting bolt 11 and the upper cover mounting bolt 12 are both hexagon socket head cap bolts.

Claims

1. The utility model provides an adopt and promote upset push down zero point positioning system of locking, includes discoid casing, and the casing axis is provided with the mesopore that the card established the zero point round pin, its characterized in that: the mesopore upper end is big-end-up's taper hole down, and mesopore pore wall ring week evenly is equipped with a plurality of luffing motion's upset latch segment, is equipped with the reset spring that resets the upset latch segment upwards on the casing, the inside ejector pin with upset latch segment one-to-one of casing, ejector pin along the radial setting of casing, the upset latch segment is established on the ejector pin inner end top, is equipped with first compression spring between ejector pin outer end and the casing, still be equipped with on the casing with the ejecting gas circuit of loosening of ejector pin to the outer end, loosen the gas circuit and set up and connect to every ejector pin department at casing internal ring shape.

2. The zero point positioning system adopting push-to-turn push-down locking according to claim 1, wherein: the ejector rod is a step rod with a large outer end and a small inner end, a step hole which is matched with the ejector rod and is large in outer and small in inner is arranged in the shell, an ejector rod outer sealing ring is arranged between the inner end of the ejector rod and the small end of the step hole, an ejector rod inner sealing ring is arranged between the outer end of the ejector rod and the large end of the step hole, and the loosening air circuit is arranged at the step of the step hole of the shell.

3. The zero point positioning system adopting push-to-turn push-down locking according to claim 2, wherein: the step hole is a through hole which radially penetrates through the shell, an internal thread is arranged at the outer end of the step hole, a threaded plug is screwed on the internal thread, and the outer end of the first compression spring is extruded by the threaded plug.

4. A zero point positioning system using push-to-turn push-down locking according to claim 1, 2 or 3, wherein: the shell comprises an upper cover and a bottom plate which are buckled up and down, the turnover locking block is arranged on the bottom plate, and the reset spring is arranged between the bottom plate and the lower wall of the turnover locking block.

5. The zero point positioning system adopting push-to-turn push-down locking according to claim 4, wherein: the loosening air passage is arranged on the bottom surface of the upper cover, and the bottom plate and the upper cover are arranged on the inner side and the outer side of the loosening air passage respectively and are provided with an annular bottom inner sealing ring and an annular bottom outer sealing ring.

6. The utility model provides an adopt and promote upset push down zero point positioning system of locking, includes discoid casing, and the casing axis is provided with the mesopore that the card established the zero point round pin, its characterized in that: the utility model discloses a piston, including mesopore upper end, the pore wall of mesopore is equipped with the piston, the piston is equipped with the annular setting, the piston is equipped with the annular groove between the outside including piston upper portion, cut apart into piston inner ring and piston outer loop with piston upper portion, the casing is equipped with the annular convex part of embedding annular groove, and upset latch segment is established on the piston inner ring top, forms annular gas circuit of loosening between piston outer loop upper portion and the casing.

7. The zero point positioning system adopting push-to-turn push-down locking according to claim 6, wherein: and a piston inner sealing ring is arranged between the inner wall of the piston outer ring and the shell, and a piston outer sealing ring is arranged between the outer wall of the piston outer ring and the shell.

8. The zero point positioning system adopting push-to-turn push-down locking according to claim 6 or 7, wherein: the shell comprises an upper cover and a bottom plate which are buckled up and down, the turnover locking block is arranged on the bottom plate, and the reset spring is arranged between the bottom plate and the lower wall of the turnover locking block.

9. The zero point positioning system of claim 8, wherein the push-to-turn push-down locking mechanism comprises: the piston is embedded between the upper cover and the bottom plate, and the second compression spring is arranged between the bottom plate and the bottom surface of the piston.

10. The zero point positioning system adopting push-to-turn push-down locking according to claim 6 or 7, wherein: the bottom surface of the piston is a hollow groove, and the top end of the second compression spring is inserted into the hollow groove in the bottom surface of the piston.