CN111085849A - Secondary accurate positioning mechanism for through hole - Google Patents
Secondary accurate positioning mechanism for through hole Download PDFInfo
- Publication number
- CN111085849A CN111085849A CN201911369761.3A CN201911369761A CN111085849A CN 111085849 A CN111085849 A CN 111085849A CN 201911369761 A CN201911369761 A CN 201911369761A CN 111085849 A CN111085849 A CN 111085849A
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- China
- Prior art keywords
- positioning mechanism
- pin
- floating
- hole
- fixed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
- B23P19/12—Alignment of parts for insertion into bores
Abstract
The invention belongs to the technical field of industrial automatic assembly and logistics production lines, and particularly relates to a secondary accurate positioning mechanism for a through hole. Comprises a fixed frame, a pin-through positioning mechanism and a telescopic driving mechanism, wherein the telescopic driving mechanism is arranged on the fixed frame and used for providing telescopic power; the pin penetrating positioning mechanism is slidably arranged on the fixed rack and connected with the output end of the telescopic driving mechanism, and the pin penetrating positioning mechanism is used for accurately positioning the relative position between the two through holes. The invention ensures the position precision of the through hole by using the pin-penetrating positioning mechanism, thereby meeting the requirements of an automatic assembly production line and reducing the influence on the accuracy of the setting level caused by inaccurate primary positioning and poor product consistency.
Description
Technical Field
The invention belongs to the technical field of industrial automatic assembly and logistics production lines, and particularly relates to a secondary accurate positioning mechanism for a through hole.
Technical Field
In an automatic assembly line, two parts are generally fixedly connected in a screw connection mode. The screw connection mode is simple and reliable, and simultaneously, higher requirements are provided for the relative position precision of the connecting piece through hole and the connected piece through hole or the threaded hole in the automatic assembling and screwing process. If the relative position precision of the connecting piece and the connected piece hole is not ideal, the phenomena of staple blocking, nail leakage and the like easily occur, so that the connecting piece and the connected piece cannot be well fixedly connected, the product percent of pass is reduced, and even the normal operation of the whole automatic assembly production line is influenced. Therefore, a solution for improving the relative accuracy of the connecting piece and the connected piece hole in the automatic production is urgently needed.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a secondary accurate positioning mechanism for a through hole, so as to solve the problems of inaccurate positioning and poor positioning consistency of the conventional through hole positioning mechanism, and meet the requirement of continuous operation of an automatic assembly line on accurate positioning of the through hole.
In order to achieve the purpose, the invention adopts the following technical scheme:
a secondary fine positioning mechanism for a through hole comprises:
fixing the frame;
the telescopic driving mechanism is arranged on the fixed rack and used for providing telescopic power;
and the pin penetrating positioning mechanism is slidably arranged on the fixed rack and is connected with the output end of the telescopic driving mechanism, and the pin penetrating positioning mechanism is used for accurately positioning the relative position between the two through holes.
The pin penetrating positioning mechanism comprises a guide shaft, a floating pin and a floating connecting structure, wherein the guide shaft is in sliding fit with a bushing arranged on the fixed rack, the upper end of the guide shaft is connected with the telescopic driving mechanism, and the lower end of the guide shaft is connected with the floating pin through the floating connecting structure.
The floating connecting structure comprises a lower end cover and a spring, wherein the lower end cover is arranged at the lower end of the guide shaft, an inner cavity is formed between the lower end cover and the guide shaft, and the upper end of the floating pin is accommodated in the inner cavity and has the freedom degree of horizontal movement; the side wall of the lower end cover is symmetrically provided with radial through holes, the spring is contained in the radial through holes, and the inner side end of the spring is abutted to the floating pin.
And a spring hoop is arranged on the outer side of the lower end cover, and the outer side end of the spring is abutted against the spring hoop.
An annular groove is formed in the outer circumference of the lower end cover, and the spring hoop is contained in the annular groove.
The upper end of the floating pin is provided with a limiting round table accommodated in the inner cavity.
A plurality of balls are arranged in the inner cavity and are respectively positioned above and below the limiting round table.
The upper surface of the limiting round table and the bottom of the lower end cover are provided with a plurality of grooves used for containing the balls.
The lower end of the floating pin is sequentially provided with a fixed belt orifice plate guide section, a fixed orifice plate equal straight section, a through orifice plate guide section to be positioned and a through orifice plate equal straight section to be positioned from bottom to top, wherein the fixed orifice plate equal straight section and the through orifice plate equal straight section to be positioned are both of cylindrical structures, and the diameter of the through orifice plate equal straight section to be positioned is larger than that of the fixed belt orifice plate equal straight section; and the fixing band pore plate guide section and the to-be-positioned through pore plate guide section are of conical structures.
The telescopic driving mechanism comprises a cylinder supporting seat, a telescopic cylinder and a floating joint, wherein the cylinder supporting seat is arranged on the fixed rack, the telescopic cylinder is arranged on the cylinder supporting seat, and an output end head is connected with the pin penetrating positioning mechanism through the floating joint.
The invention has the advantages and beneficial effects that:
the invention ensures the position precision of the through hole by using the pin-penetrating positioning mechanism, thereby meeting the requirements of an automatic assembly production line.
The invention adopts the floating pin to realize the accurate positioning of the through hole, and reduces the influence on the accuracy of the positioning caused by inaccurate initial positioning and poor product consistency.
The invention ensures the reliability of the product and improves the success rate of accurate positioning of the through hole through reasonable design.
Drawings
FIG. 1 is an isometric view of a secondary precision positioning mechanism for through-holes in accordance with the present invention;
FIG. 2 is an isometric view of the pin passing positioning mechanism of the present invention;
FIG. 3 is a cross-sectional view of the pin passing detent mechanism of the present invention;
FIG. 4 is an action diagram of the floating pin of the present invention;
FIG. 5 is a schematic diagram of the operation of the floating pin of the present invention;
FIG. 6 is a second schematic diagram illustrating the operation of the floating pin according to the present invention;
fig. 7 is a third schematic view illustrating the operation of the floating pin according to the present invention.
In the figure: the device comprises a fixed frame 1, a telescopic cylinder 2, a lining 3, a floating joint 4, a pin penetrating positioning mechanism 5, a through hole plate 6 to be positioned, a fixed perforated plate 7, a cylinder supporting seat 8, a guide shaft 9, a spring hoop 10, a floating pin 11, a ball 13, a lower end cover 14 and a limiting circular table 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, the secondary accurate positioning mechanism for through holes provided by the invention comprises a fixed frame 1, a pin penetrating positioning mechanism 5 and a telescopic driving mechanism, wherein the telescopic driving mechanism is arranged on the fixed frame 1 and used for providing telescopic power; the pin penetrating positioning mechanism 5 is slidably arranged on the fixed rack 1 and connected with the output end of the telescopic driving mechanism, and the pin penetrating positioning mechanism 5 is used for accurately positioning the relative position between the two through holes.
As shown in fig. 2-3, the pin-passing positioning mechanism 5 includes a guide shaft 9, a floating pin 11 and a floating connection structure, wherein the guide shaft 9 is slidably fitted with the bushing 3 provided on the fixed frame 1, and the upper end of the guide shaft is connected with the telescopic driving mechanism, the lower end of the guide shaft 9 is connected with the floating pin 11 through the floating connection structure, and the guide shaft 9 is fitted with the inner hole of the bushing 3 to determine the movement direction of the guide shaft 9.
The floating connection structure comprises a lower end cover 14 and a spring 13, wherein the lower end cover 14 is arranged at the lower end of the guide shaft 9, an inner cavity for the floating pin 11 to horizontally move is formed between the lower end cover 14 and the guide shaft 9, and the upper end of the floating pin 11 is accommodated in the inner cavity and has the freedom degree of horizontal movement; the side wall of the lower end cover 14 is symmetrically provided with radial through holes, the spring 13 is accommodated in the radial through holes, and the inner side end of the spring is abutted to the floating pin 11.
Further, the outer side of the lower end cover 14 is provided with a spring hoop 10, the outer circumference of the lower end cover 14 is provided with an annular groove, and the spring hoop 10 is accommodated in the annular groove and used for supporting the spring 13. The outer end of the spring 13 abuts against the spring band 10, and the spring 13 is in a compressed state for providing a restoring force for returning the floating pin 11 to the original position.
The floating pin 11 is of a T-shaped structure, and the upper end of the floating pin is provided with a limiting round table 15 accommodated in the inner cavity. A plurality of balls 12 respectively positioned above and below the limiting circular truncated cone 15 are arranged in the inner cavity, and a plurality of grooves used for containing the balls 12 are formed in the upper surface of the limiting circular truncated cone 15 and the bottom of the lower end cover 14.
In the embodiment of the invention, the grooves on the upper surface of the limiting round table 15 and the bottom of the lower end cover 14 are tapered grooves, and the balls 12 are arranged in the tapered grooves of the floating pin 11 and the lower end cover 14 and are used for supporting the floating pin 11 and enabling the floating pin 11 to move horizontally. The contact surfaces of the balls 12, the floating pin 11 and the lower end cover 14 are smooth and have high roughness requirement, so that the floating pin 11 can move horizontally and smoothly under the support of the balls 12.
As shown in fig. 4, the lower end of the floating pin 11 is sequentially provided with a fixed band orifice plate guide section 111, a fixed band orifice plate equal straight section 112, a to-be-positioned through orifice plate guide section 113, and a to-be-positioned through orifice plate equal straight section 114 from bottom to top, wherein the fixed band orifice plate equal straight section 112 and the to-be-positioned through orifice plate equal straight section 114 are both cylindrical structures, and the diameter of the to-be-positioned through orifice plate equal straight section 114 is greater than that of the fixed band orifice plate equal straight section 112; the fixing band hole plate guide section 111 and the through hole plate guide section 113 to be positioned are both conical structures.
As shown in fig. 1, in the embodiment of the present invention, the telescopic driving mechanism includes a cylinder support 8, a telescopic cylinder 2 and a floating joint 4, wherein the cylinder support 8 is connected to the upper portion of the fixed frame 1 through a screw for adjusting the movement space of the pin-through positioning mechanism 5. The telescopic cylinder 2 is arranged on a cylinder supporting seat 8, and the output end head is connected with a guide shaft 9 in the pin penetrating positioning mechanism 5 through a floating joint 4. The cylinder supporting seat 8 is used for bearing the telescopic cylinder 2 and positioning the telescopic cylinder 2; the end that stretches out of telescopic cylinder 2 stretches out the end preformed hole for the cylinder on fixed frame 1 and passing cylinder supporting seat 8 for telescopic cylinder 2 is fixed, but stretches out the end vertical direction and stretches out and retract. The pin-through positioning mechanism 5 and the floating joint 4 move along with the extending end of the telescopic cylinder 2.
The bush 3 sets up in fixed frame, links firmly with fixed frame 1 through the screw, and the upper surface of fixed frame 1 is hugged closely to 3 flange faces of bush to in the cooperation reserved processing hole to fixed frame 1, bush 3 is used for the restriction to wear the direction of motion of round pin positioning mechanism 5.
The floating joint 4 is arranged on the telescopic cylinder 2 and used for connecting the telescopic cylinder 2 with the pin penetrating positioning mechanism 5. The floating joint 4 is internally provided with a spherical hinge for eliminating the influence of non-coaxial between the telescopic cylinder 2 and the pin-through positioning mechanism 5 caused by installation error.
The action process of material handling and accurate positioning for industrial automation equipment comprises the following steps:
the fixed perforated plate 7 is fixed by the preorder station, the through-hole plate 6 to be positioned is placed on the fixed perforated plate 7, and at the moment, primary positioning is carried out between the two holes, but the coaxiality is poor.
The telescopic cylinder 2 extends out to drive the floating joint 4 and the pin penetrating positioning mechanism 5 to move downwards.
As shown in fig. 5, in the downward movement process of the pin-through positioning mechanism 5, relative errors exist among three axes of the floating pin 11, the through hole to be positioned and the fixed hole; first, the fixed perforated plate guide section 111 penetrates into the fixed hole of the fixed perforated plate 7, and at this time, since the fixed perforated plate 7 is fixed and cannot move, the floating pin 11 contacts the fixed hole wall of the fixed perforated plate 7 through the fixed perforated plate guide section 111. Because the fixed belt pore plate guide section 111 is a conical surface, the contact generates an acting force with a component force in the horizontal direction, the floating pin 11 is pushed to move horizontally under the support of the roller 12, the distance between the floating pin 11 and the fixed hole axis is reduced, and the spring 13 is compressed.
When the straight section 112 with the orifice plate and the like on the floating pin 11 to be matched with the size of the fixed hole enters the fixed hole, the position of the floating pin 11 is determined, and the error between the axis of the floating pin 11 and the axis of the fixed hole is within an allowable range, as shown in fig. 6.
The telescopic cylinder 2 continues to extend, the floating pin 11 continues to move downwards until the guide section 113 of the through hole plate with the positioning is contacted with the wall of the through hole with the positioning, at the moment, the floating pin 11 can only move vertically but not move horizontally due to the matching of the floating pin 11 and the fixed through hole plate 7, the horizontal component force generated by the contact pushes the through hole plate 6 to be positioned to move horizontally, and the distance between the axis of the floating pin 11 and the axis of the through hole plate 6 to be positioned is reduced.
As shown in fig. 7, the telescopic cylinder 2 continues to extend, the floating pin 11 continues to move downwards to the straight section 114 of the through hole plate to be positioned to deeply penetrate into the through hole to be positioned of the through hole plate 6 to be positioned, and the size of the straight section 114 of the through hole plate to be positioned is matched with the size of the through hole to be positioned of the through hole plate 6 to be positioned, so that the coaxiality is ensured to be within the allowable range, higher coaxiality between the through hole to be positioned of the through hole plate 6 to be positioned and the fixing hole of the fixing band hole plate 7 is realized, and the requirement of automatic assembly on the through hole positioning precision is met.
The telescopic cylinder 2 retracts to drive the floating pin 11 to vertically move upwards, the floating pin 11 moves out of the through hole plate 6 to be positioned, and the spring 13 is compressed to recover the original length, so that the floating pin 11 is horizontally pushed to return to the original position.
The invention can accurately position the relative position between the through hole for the second time, and achieve higher coaxiality so as to meet the requirement of automatic assembly.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A secondary accurate positioning mechanism to through-hole, its characterized in that includes:
a stationary frame (1);
the telescopic driving mechanism is arranged on the fixed rack (1) and used for providing telescopic power;
the pin penetrating positioning mechanism (5) is slidably arranged on the fixed rack (1) and is connected with the output end of the telescopic driving mechanism, and the pin penetrating positioning mechanism (5) is used for accurately positioning the relative position between the two through holes.
2. The secondary accurate positioning mechanism aiming at the through hole is characterized in that the pin-penetrating positioning mechanism (5) comprises a guide shaft (9), a floating pin (11) and a floating connecting structure, wherein the guide shaft (9) is in sliding fit with a lining (3) arranged on the fixed frame (1), the upper end of the guide shaft is connected with the telescopic driving mechanism, and the lower end of the guide shaft (9) is connected with the floating pin (11) through the floating connecting structure.
3. The secondary fine positioning mechanism for through holes according to claim 2, characterized in that the floating connection structure comprises a lower end cover (14) and a spring (13), wherein the lower end cover (14) is arranged at the lower end of the guide shaft (9) and forms an inner cavity with the guide shaft (9), and the upper end of the floating pin (11) is accommodated in the inner cavity and has a freedom of horizontal movement; radial through holes are symmetrically formed in the side wall of the lower end cover (14), the spring (13) is contained in the radial through holes, and the inner side end of the spring is abutted to the floating pin (11).
4. The secondary fine positioning mechanism for through hole according to claim 3, characterized in that the outer side of the lower end cap (14) is provided with a spring band (10), and the outer side end of the spring (13) abuts against the spring band (10).
5. The secondary fine positioning mechanism for through holes of claim 4, characterized in that the lower end cap (14) is provided with an annular groove on its outer circumference, and the spring band (10) is received in the annular groove.
6. The secondary fine positioning mechanism for through holes of claim 3, characterized in that the upper end of the floating pin (11) is provided with a limiting round table (15) accommodated in the inner cavity.
7. The secondary fine positioning mechanism for through holes according to claim 6, wherein a plurality of balls (12) are arranged in the inner cavity and respectively located above and below the limiting truncated cone (15).
8. The secondary precise positioning mechanism for the through hole according to claim 7, wherein the upper surface of the limiting circular truncated cone (15) and the bottom of the lower end cover (14) are provided with a plurality of grooves for accommodating the balls (12).
9. The secondary accurate positioning mechanism for the through hole according to claim 2, characterized in that the lower end of the floating pin (11) is provided with a fixed perforated plate guide section (111), a fixed perforated plate equal straight section (112), a to-be-positioned perforated plate guide section (113) and a to-be-positioned perforated plate equal straight section (114) in sequence from bottom to top, wherein the fixed perforated plate equal straight section (112) and the to-be-positioned perforated plate equal straight section (114) are both cylindrical structures, and the diameter of the to-be-positioned perforated plate equal straight section (114) is larger than that of the fixed perforated plate equal straight section (112); the fixed perforated plate guide section (111) and the through hole plate guide section (113) to be positioned are both conical structures.
10. The secondary precise positioning mechanism for through holes according to claim 1, characterized in that the telescopic driving mechanism comprises a cylinder support base (8), a telescopic cylinder (2) and a floating joint (4), wherein the cylinder support base (8) is arranged on the fixed frame (1), the telescopic cylinder (2) is arranged on the cylinder support base (8), and an output end is connected with the pin-through positioning mechanism (5) through the floating joint (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369761.3A CN111085849A (en) | 2019-12-26 | 2019-12-26 | Secondary accurate positioning mechanism for through hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369761.3A CN111085849A (en) | 2019-12-26 | 2019-12-26 | Secondary accurate positioning mechanism for through hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111085849A true CN111085849A (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911369761.3A Pending CN111085849A (en) | 2019-12-26 | 2019-12-26 | Secondary accurate positioning mechanism for through hole |
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| CN (1) | CN111085849A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645110A (en) * | 2020-07-01 | 2020-09-11 | 无锡盈连科技有限公司 | Radial floating device |
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| CN208917699U (en) * | 2018-09-04 | 2019-05-31 | 河北圣宣桥梁模板科技有限公司 | A kind of positioning device of high-speed railway bridge pier template |
| CN110125791A (en) * | 2019-07-03 | 2019-08-16 | 安徽多邦珩磨技术有限公司 | A kind of float connector |
| CN110238657A (en) * | 2018-12-19 | 2019-09-17 | 吉林瑞铭机电设备有限公司 | EPS autobalance drilling pin pressing machine |
| CN110370190A (en) * | 2019-07-31 | 2019-10-25 | 德清金瑞机械设备有限公司 | Small-caliber steel pipe rotary rack location locking mechanism |
| CN110421505A (en) * | 2019-08-27 | 2019-11-08 | 华晓精密工业(苏州)有限公司 | Location structure and automatic guided vehicle location structure with it |
| CN209774088U (en) * | 2019-04-03 | 2019-12-13 | 长安徕斯(重庆)机器人智能装备有限公司 | Clamp positioning pin structure |
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- 2019-12-26 CN CN201911369761.3A patent/CN111085849A/en active Pending
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| US4021132A (en) * | 1976-05-19 | 1977-05-03 | Erickson Tool Company | Floating tool holder |
| JPH04223837A (en) * | 1990-05-16 | 1992-08-13 | Nec Toyama Ltd | Substrate positioning device |
| JPH09246795A (en) * | 1996-03-14 | 1997-09-19 | Matsushita Electric Ind Co Ltd | Device for correcting position of printed board |
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| CN208907425U (en) * | 2018-09-28 | 2019-05-28 | 合肥凯创汽车零部件有限公司 | A kind of large aperture positioning pin of size adjustable |
| CN110238657A (en) * | 2018-12-19 | 2019-09-17 | 吉林瑞铭机电设备有限公司 | EPS autobalance drilling pin pressing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645110A (en) * | 2020-07-01 | 2020-09-11 | 无锡盈连科技有限公司 | Radial floating device |
| CN111645110B (en) * | 2020-07-01 | 2024-05-03 | 无锡盈连科技有限公司 | Radial floating device |
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