CN111250981B - Bidirectional rotation resetting device - Google Patents
Bidirectional rotation resetting device Download PDFInfo
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- CN111250981B CN111250981B CN202010137020.9A CN202010137020A CN111250981B CN 111250981 B CN111250981 B CN 111250981B CN 202010137020 A CN202010137020 A CN 202010137020A CN 111250981 B CN111250981 B CN 111250981B
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- bearing
- fixing
- sliding blocks
- sliding
- guide
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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
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/002—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units stationary whilst being composed
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Abstract
The invention discloses a bidirectional rotary reset device, comprising: the fixing component comprises a body and a bearing arranged on the body, wherein the body is provided with at least two guide holes; the rotating component comprises a connecting plate, the surface of the connecting plate is provided with a main shaft and two pushing parts, one end of the main shaft is connected with the bearing, and the rotating component can rotate around the main shaft; the sliding component comprises two symmetrically arranged sliding blocks, the two sliding blocks are connected through a tension spring, guide posts corresponding to the guide holes are arranged on the sliding blocks, and the two sliding blocks are respectively abutted against the two pushing parts; when the rotating component rotates, the two pushing parts respectively push the two sliding blocks to move towards two sides along the guide hole. The invention solves the problem that in the automatic assembly industry, the contact surfaces of two parts are parallel due to the fact that simple positioning cannot ensure the contact surfaces of the two parts, and a gap is formed between the contact surfaces of the two parts after assembly.
Description
Technical Field
The invention relates to a bidirectional rotary reset device.
Background
In assembly, the contact surface between the two parts perpendicular to the XY plane needs to be completely attached and assembled. When the personnel assemble manually, although the quality of the assembled product can be ensured, the efficiency is too low. With the increasing automation level in industry. At present most repeated simple work has all been handed in by mechanical automation device and accomplish, and on the automatic line body, because the error after the positioning deviation of two parts, manipulator snatch leads to the contact surface nonparallel of two parts, if do not correct it, then can form an contained angle between two contact surfaces after the equipment, produce the defective products.
Although the prior art can take pictures of two contact surfaces respectively through visual detection, the Z axis of the manipulator is added with a rotating function and then is corrected, and the Z axis rotates for a certain angle, so that the aim of paralleling the two contact surfaces is fulfilled. However, the visual detection equipment is high in price, and the requirements on a Z-axis rotating mechanism and a mechanical arm are high; sometimes, the contact surface can not be photographed and detected when being shielded, for example, when a light guide plate is assembled in the backlight industry, the light guide plate is required to be assembled close to the lamp strip and the lamp bead, the lamp strip and the lamp bead are hidden in a U-shaped folder and can not be directly photographed, under the condition, the lamp strip and the lamp bead can only be acquiescent to be parallel to the Y axis, the light guide plate is corrected visually to be parallel to the Y axis, but the gap is formed between the assembled light guide plate and the lamp bead due to the fact that the lamp strip and the lamp bead are not parallel to the Y axis in many times due to assembly errors, and optical defects are caused. There is a great need for a cost effective structure that is adaptable to such structural assembly problems.
Disclosure of Invention
The invention aims to provide a bidirectional rotation resetting device which realizes bidirectional rotation through a simple mechanical structure and can automatically reset after external force disappears.
According to an aspect of the present invention, there is provided a bidirectional rotary reset device, including:
the fixing component comprises a body and a bearing arranged on the body, wherein the body is provided with at least two guide holes;
the rotating component comprises a connecting plate, the surface of the connecting plate is provided with a main shaft and two pushing parts, one end of the main shaft is connected with the bearing, and the rotating component can rotate around the main shaft; and
the sliding component comprises two sliding blocks which are symmetrically arranged, the two sliding blocks are connected through a tension spring, guide posts corresponding to the guide holes are arranged on the sliding blocks, and the two sliding blocks are respectively abutted against the two pushing parts;
when the rotating component rotates, the two pushing parts respectively push the two sliding blocks to move towards two sides along the guide hole.
Preferably, the body of the fixing part is rectangular, four extending parts extend from the body, and the extending parts are provided with the guide holes.
Preferably, the fixing part further includes a fixing cover, the body is provided with a bearing fixing groove for mounting the bearing, and the fixing cover is fixedly combined to the surface of the body through a bolt and fixes the outer ring of the bearing.
Preferably, the pushing part is a ball bearing, two fixed shafts are arranged on the surface of the pushing part, the ball bearing is sleeved on the fixed shafts, and an outer ring of the ball bearing is abutted to the sliding block of the sliding component.
Preferably, two arc-shaped grooves are formed in the bottom surface of the body of the fixing part, and the top of the fixing shaft is located in the arc-shaped grooves.
Preferably, the rotating part further comprises a spindle fixing block, a threaded hole is formed in the top surface of the spindle, the spindle is in clearance fit with the bearing, and the spindle is fixedly connected with the inner ring of the bearing through the spindle fixing block.
Preferably, two sliding blocks of the sliding component are respectively arranged in an L shape, and each sliding block is provided with two guide posts.
Preferably, the number of the tension springs is two, and the two tension springs are respectively and fixedly connected to the position, close to the edge, of the sliding bottom surface.
Preferably, a linear bearing is arranged in the guide hole and is in sliding fit with the guide column.
The invention has the following beneficial effects:
the invention solves the problem that in the automatic assembly industry, the contact surfaces of two parts are parallel due to the fact that simple positioning cannot ensure the contact surfaces of the two parts, and a gap is formed between the contact surfaces of the two parts after assembly. The invention has simple design principle and low cost, and the size of the device and the elasticity of the tension spring can be changed by external force required by the rotation of the device and the rotating part according to the characteristics of products needing to be assembled, thereby having convenient use and wide coverage.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of the present invention.
Fig. 2 shows a bottom view of the invention.
Fig. 3 shows a schematic view of the structure of the fixing member of the present invention.
Fig. 4 shows a schematic view of the structure of a rotating member of the present invention.
Fig. 5 shows a bottom view of the fixing element of the invention.
Fig. 6 shows a schematic view of the structure of the sliding member of the present invention.
Figure 7 shows a schematic view after the part has been gripped by the device according to the invention.
Figure 8 shows a schematic view of a part after it has been brought into contact with a reference edge by means of the device according to the invention.
Figure 9 shows a schematic view of a part being gripped by the apparatus of the invention after it has been brought into abutment with a reference edge.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
In one embodiment of the bi-directional rotary reset device of the present invention shown in fig. 1 and 2, the device comprises a fixed member 10, a rotating member 20 and a sliding member 30, wherein the fixed member 10 comprises a body and a bearing 12 disposed on the body, and at least two guide holes 13 are disposed on the body. The rotating part 20 comprises a connecting plate 21, a main shaft and two pushing parts are arranged on the connecting plate 21, the top end of the main shaft is sleeved in the bearing 12, and the rotating part 20 and the fixed part 10 can rotate relatively. The sliding part 30 comprises two symmetrically arranged sliding blocks, the two sliding blocks are connected through a tension spring 31, guide posts 32 are arranged on the two sliding blocks respectively, the guide posts 32 are inserted into the guide holes 13, and the pushing parts are abutted to the edges of the two sliding blocks respectively.
When the bidirectional rotation resetting device works, after the fixed part 10 is fixed, when one end point of the rotating part 20 is stressed, the rotating part 20 rotates by taking the axis of the bearing 12 as the center, the two pushing parts respectively push the sliding blocks to open along the axis direction of the guide hole 32, the tension spring 31 is stressed and stretched, when the force is removed, the sliding blocks are stressed by the tension force of the tension spring 31 and return to the original position, the two pushing parts are pressed tightly, and the mechanism returns to the original position.
The invention solves the problem that in the automatic assembly industry, the contact surfaces of two parts are parallel due to the fact that simple positioning cannot ensure the contact surfaces of the two parts, and a gap is formed between the contact surfaces of the two parts after assembly. The invention has simple design principle and low cost, and the size of the device and the elasticity of the tension spring can be changed by external force required by the rotation of the device and the rotating part 20 according to the characteristics of products needing to be assembled, thereby having convenient use and wide coverage.
As shown in fig. 3, the fixing member in this embodiment includes a body 11, a bearing 12, and a fixing cover 15, the body 11 is a rectangular block, four extending portions 14 extend from the body 11, and each extending portion 14 is provided with a guide hole 13. The body 11 is provided with a bearing fixing groove, the bearing 12 is installed in the bearing fixing groove, and the fixing cover 15 is fixedly combined on the surface of the body 11 through a bolt and compresses and fixes the outer ring of the bearing 12.
As shown in fig. 4, the rotating member 20 includes a connecting plate 21, and a surface of the connecting plate 21 is provided with a main shaft 22 and two fixing shafts 23, and the fixing shafts 23 are respectively located at both sides of the main shaft 22. A ball bearing 24 is fitted over the fixed shaft 23, and the ball bearing 24 forms a pushing portion of the rotating member 20.
Referring to fig. 1 again, the rotating component 20 further includes a spindle fixing block 25, a threaded hole is formed in a top surface of the spindle 22, the spindle 22 and the bearing 12 are in clearance fit, and after the spindle 22 passes through the bearing 12 from below, the spindle fixing block 25 is fixed to the top surface of the spindle 22 through a bolt, so that the spindle 22 is fixedly connected to an inner ring of the bearing 12.
Further, as shown in fig. 4 and 5, two arc-shaped grooves 17 are formed in the bottom surface of the body 11, the top portions of the fixing shafts 23 are respectively located in the arc-shaped grooves 17, and the rotation center of the arc-shaped grooves 17 coincides with the axis of the main shaft 22. The top end of the fixed shaft 23 slides in the arc-shaped groove 17, so that the motion stability of the rotating component 20 can be improved.
As shown in fig. 6, the sliding member 30 includes two symmetrical sliders 33, and the two sliders 33 are connected to each other by a tension spring 31. The slider 32 is L-shaped, and includes a vertical plate 34 and a horizontal plate 35, two guide posts 32 are respectively disposed on each vertical plate 34, and the four guide posts 32 are respectively inserted into the corresponding guide holes 13. The outer ring of the ball bearing 24 on the rotating component 20 abuts against the edge of the transverse plate 35, when the rotating component 20 rotates, the two ball bearings 24 respectively push the two transverse plates 35 to drive the two sliders 32 to move apart, and the sliders 32 move apart to both sides along the axis of the guide hole 13. As shown in fig. 2, a bolt is provided on the bottom surface of the horizontal plate 35, both ends of the tension spring 31 are fixedly connected to the bolt, and when the external force acting on the rotating member 20 disappears, the tension spring 31 drives the slider 32 to move toward the middle until the horizontal plate 35 abuts against the two ball bearings 24, and the rotating member 20 stops rotating.
Further, the tension springs 31 are provided in two, respectively adjacent to two side edges of the horizontal plate 35. The two tension springs 31 are arranged to provide balanced tension, so that the sliding block 33 can move smoothly.
The device can rotate under bidirectional stress, the original point position is not affected by the inconsistent tension of the tension springs at the two sides, the effect of consistent original point in the long-term use process is realized, and additionally increased tolerance and uncertain factors caused by the variation of the original point in the use process of the device are completely eliminated.
Referring to fig. 3 again, a linear bearing 16 is disposed in the guide hole 13, and the linear bearing 16 is tightly fitted with the guide hole 13 and fixed by mounting snap springs on two sides of the linear bearing 16. The guide post 32 is connected with the linear bearing 16 in a matching way, and the linear bearing 16 is a linear motion system which is used for matching the linear stroke with the cylindrical guide post 32. The linear bearing has small friction and is relatively stable, does not change along with the speed of the bearing, and can obtain stable linear motion with high sensitivity and high precision. It is understood that the guide post 32 and the linear bearing 16 are a linear reciprocating mechanism, and in other embodiments, a linear reciprocating mechanism such as a slide rail or a slide groove may be used.
As shown in fig. 7, the fixing member 10 is connected to a robot, and the rotating member 20 is connected to a gripping device, which is a chuck device in this embodiment, and the chuck device sucks the part 100. When the parts 100 and 200 to be assembled need to be assembled close to each other and the contact surfaces are completely attached, a larger or smaller angular deviation on the XY plane inevitably occurs between the pre-joint surfaces of the two parts to be attached due to the two-part fixing mechanism, the error during grabbing, the error after the robot arm moves, and the like.
As shown in fig. 8, the robot drives the part 100 to move toward the part 200 by the device and the gripping device of the present invention. When the part 100 to be assembled contacts with the reference side of the part 200, the part 100 is subjected to resistance F1, and when force is transmitted to the part 100, because the part 100, the sucker and the rotating component 20 of the device are a whole, the whole rotates anticlockwise along the bearing 12, the ball bearings 24 on two sides of the rotating component 20 also rotate anticlockwise, then the ball bearing on the left side pushes the lower slider to move downwards, the ball bearing on the right side pushes the upper slider to move upwards (if the other side of the part 100 is stressed, the situation is opposite to that at the moment), the tension spring 31 is stretched by the tension of the slider until the part 100 to be assembled is completely attached to the reference surface of the part 200, and after force balance is achieved, the device cannot approach to the normal reference surface.
Further, when the tension spring 31 is selected as the device of the present invention, the approximate calculation formula of the total tension force fray of the tension spring 31 at the initial position (since the mechanism for pushing the slide block to move adopts the ball bearing, the friction force of the slide block when moving is negligible):
f la × L2 ═ F1 × L1
Wherein L2 is the vertical distance from the tension spring 31 to the main shaft 22, L1 is the vertical distance from the contact point of the two parts to the main shaft 22, and F1 is in the range of 15-20N.
When the product is assembled in place, the gripping device releases the part 100, the force F1 acting on the rotating member 20 is removed, the elastic potential energy accumulated before the tension spring 31 pulls the slide 33 back, the slide 33 pushes the ball bearings 24 of the rotating member until the two slides clamp the two ball bearings 2, and the device returns to the original position.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (7)
1. A bi-directional rotary reduction device, comprising:
the fixing component comprises a body and a bearing arranged on the body, wherein the body is provided with at least two guide holes;
the rotating component comprises a connecting plate, the surface of the connecting plate is provided with a main shaft and two pushing parts, one end of the main shaft is connected with the bearing, and the rotating component can rotate around the axis of the main shaft; and
the sliding component comprises two sliding blocks which are symmetrically arranged, the two sliding blocks are connected through a tension spring, guide posts corresponding to the guide holes are arranged on the sliding blocks, and the two sliding blocks are respectively abutted against the two pushing parts;
when the rotating component rotates, the two pushing parts respectively push the two sliders to move towards two sides along the guide hole, the pushing part is a ball bearing, two fixing shafts are arranged on the surface of the connecting plate, the ball bearing sleeves are arranged on the fixing shafts, outer rings of the ball bearings are abutted to the sliders of the sliding component, two arc-shaped grooves are formed in the bottom surface of the body, and the tops of the fixing shafts are located in the arc-shaped grooves.
2. The bidirectional rotary reset device of claim 1, wherein the body of the fixing member is rectangular, four extending portions extend from the body, and the extending portions are provided with the guide holes.
3. The bi-directional rotary reset device of claim 2, wherein the fixing portion further comprises a fixing cover, the body is provided with a bearing fixing groove for mounting the bearing, and the fixing cover is fixedly combined on the surface of the body through a bolt and fixes the outer ring of the bearing.
4. The bidirectional rotary reset device of claim 1, wherein the rotating member further comprises a spindle fixing block, a threaded hole is formed in a top surface of the spindle, the spindle and the bearing are in clearance fit, and the spindle is fixedly connected with the inner ring of the bearing through the spindle fixing block.
5. The bi-directional rotary reset device of claim 2, wherein the two sliding blocks of the sliding member are respectively arranged in an L shape, and each sliding block is provided with two guide posts.
6. The bidirectional rotary reset device of claim 5, wherein two tension springs are provided and are respectively fixedly connected to the bottom surface of the slide block at a position close to the edge.
7. The bi-directional rotary reduction device of claim 1, wherein a linear bearing is disposed within the guide bore, the linear bearing being in sliding engagement with the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137020.9A CN111250981B (en) | 2020-03-02 | 2020-03-02 | Bidirectional rotation resetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137020.9A CN111250981B (en) | 2020-03-02 | 2020-03-02 | Bidirectional rotation resetting device |
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| Publication Number | Publication Date |
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| CN111250981A CN111250981A (en) | 2020-06-09 |
| CN111250981B true CN111250981B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010137020.9A Active CN111250981B (en) | 2020-03-02 | 2020-03-02 | Bidirectional rotation resetting device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000213226A (en) * | 1998-11-19 | 2000-08-02 | Chuto Sangyo Kk | Hinge for game machine |
| CN204790501U (en) * | 2015-06-24 | 2015-11-18 | 苏州光宝康电子有限公司 | LCD is angle of rotation orthotic devices for processing platform |
| CN106013976A (en) * | 2016-06-29 | 2016-10-12 | 佛山市思歌锁业科技有限公司 | Knob device capable of bidirectionally rotating and automatically resetting for lock |
| CN208752876U (en) * | 2018-08-16 | 2019-04-16 | 铜陵有色金属集团铜冠物流有限公司 | A kind of Features of Railway Logistics management information display board of angle adjustable |
| CN109849037A (en) * | 2019-04-11 | 2019-06-07 | 上海焕巍智能科技有限公司 | A kind of robot gripper |
-
2020
- 2020-03-02 CN CN202010137020.9A patent/CN111250981B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000213226A (en) * | 1998-11-19 | 2000-08-02 | Chuto Sangyo Kk | Hinge for game machine |
| CN204790501U (en) * | 2015-06-24 | 2015-11-18 | 苏州光宝康电子有限公司 | LCD is angle of rotation orthotic devices for processing platform |
| CN106013976A (en) * | 2016-06-29 | 2016-10-12 | 佛山市思歌锁业科技有限公司 | Knob device capable of bidirectionally rotating and automatically resetting for lock |
| CN208752876U (en) * | 2018-08-16 | 2019-04-16 | 铜陵有色金属集团铜冠物流有限公司 | A kind of Features of Railway Logistics management information display board of angle adjustable |
| CN109849037A (en) * | 2019-04-11 | 2019-06-07 | 上海焕巍智能科技有限公司 | A kind of robot gripper |
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| Publication number | Publication date |
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| CN111250981A (en) | 2020-06-09 |
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