CN214558840U

CN214558840U - Sleeve and assembly fixture

Info

Publication number: CN214558840U
Application number: CN202120712628.XU
Authority: CN
Inventors: 符宇强
Original assignee: KUKA Robotics Guangdong Co Ltd
Current assignee: KUKA Robotics Guangdong Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-02
Anticipated expiration: 2031-04-08

Abstract

The utility model provides a sleeve and assembly fixture, the sleeve includes: the body is provided with a clamping part which can be used for clamping a workpiece; the limiting part is arranged in the body and can be used for ensuring the size of the workpiece extending into the clamping part. The sleeve provided by the utility model is provided with the locating part in the body, under the condition of not changing the specific structure of the standard sleeve, the gasket is ensured to be separated from the body without contacting, and further the sleeve is ensured not to damage the workpiece and the matching parts thereof in the use process; and can use with the drive unit cooperation, realize the automatic assembly to the work piece, promote work efficiency.

Description

Sleeve and assembly fixture

Technical Field

The utility model relates to an automation equipment technical field particularly, relates to a sleeve and assembly fixture.

Background

In the related technology, the depth of the standard sleeve is large, when a workpiece extends into the standard sleeve, the standard sleeve is easy to nest and transition, and then the standard sleeve is contacted with the workpiece and a matched component to generate an indentation, so that the assembly effect is influenced, and the service life of a product is prolonged. In addition, if the existing standard sleeve needs to be modified, time and labor are wasted, and a manufacturing tool matched with the standard sleeve needs to be improved, so that unnecessary economic loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model discloses a first aspect provides a sleeve.

The utility model discloses the second aspect provides an assembly fixture.

The utility model discloses a first aspect provides a sleeve, include: the body is provided with a clamping part which can be used for clamping a workpiece; the limiting part is provided with a preset height and arranged in the body and can be used for ensuring the size of the workpiece extending into the clamping part.

The utility model provides a sleeve includes body and locating part. The body is provided with a clamping part, and a workpiece can be clamped through the clamping part; the limiting part has a preset height and can be arranged in the body so as to ensure the size of the workpiece extending into the clamping part. That is, after the work piece dress card to dress card portion, the locating part can be used to the butt work piece, plays certain limiting displacement, guarantees that the work piece stretches into the inside volume of stretching into of dress card portion, avoids work piece and supporting part and telescopic body to take place to collide with.

Specifically, the utility model provides a sleeve can be used to work pieces such as installation screw, and above-mentioned work piece generally all matches the gasket and uses. Consequently, in the course of the work, stretch into the dress card portion of body with the tip of work piece to through the tip of locating part butt work piece, guarantee that the work piece stretches into the inside size of dress card portion and suits, make the cover establish and reserve certain interval between gasket and the body on the work piece, guarantee between gasket and the body phase separation and can not contact. Therefore, the gasket cannot be indented or damaged in the assembling process, and the sleeve cannot be damaged in the using process.

In addition, the limiting piece is detachably arranged in the body, and the position in the body is adjustable. Therefore, before the sleeve is used, the position of the limiting piece in the body can be adjusted according to actual conditions, so that the sleeve is suitable for assembling different workpieces, and the universality of the sleeve is realized. That is, the utility model discloses need not to change the telescopic structure of current standard, more need not change the telescopic design of current standard and processing frock, only need add the locating part in the standard sleeve in order to adjust the work piece stretch into dress card portion inside size can, have extremely strong suitability and commonality to higher economic value has.

It should be noted that the preset height of the limiting element is the height of the limiting element itself, and can be designed according to actual situations. When the depth of the clamping part is deeper, the preset height of the limiting part can be properly increased; when the depth of the clamping part is shallow, the preset height of the limiting part can be properly reduced, so that the workpiece can be ensured to stretch into the clamping part to be proper in size, and a certain interval is ensured to be reserved between the gasket sleeved on the workpiece and the body.

Therefore, the sleeve provided by the utility model is provided with the locating part with the preset height in the body, and under the condition of not changing the concrete structure of the quasi-sleeve, the spacer is separated from the body and can not contact with the body, thereby ensuring that the sleeve can not damage the workpiece and the matching parts thereof in the use process; and can use with the drive unit cooperation, realize the automatic assembly to the work piece, promote work efficiency.

According to the utility model discloses above-mentioned technical scheme's sleeve can also have following additional technical characterstic:

in the above technical solution, the limiting member includes: the abutting part is arranged in the body and has a gap with the inner wall of the body; the interference part is sleeved on the abutting part and is in interference fit with the outer wall of the abutting part and the inner wall of the clamping part.

In this technical scheme, the locating part includes supporting butt portion and the interference portion of using. Wherein, the abutting part is arranged in the body and has a certain interval with the inner wall of the body; the interference portion is sleeved on the abutting portion and located at the spaced position, the interference portion is simultaneously contacted with the outer wall of the abutting portion and the inner wall of the clamping portion, the abutting portion is integrally connected with the body through interference fit, certain limiting effect is achieved on the workpiece through the abutting portion and the interference portion in the using process, and the workpiece is guaranteed to stretch into the size of the clamping portion.

Specifically, before the sleeve is used, the abutting part is placed in the body according to actual conditions, the proper distance between the abutting part and the end part of the body is ensured, and the body cannot be contacted with a gasket sleeved on a workpiece under the condition that the workpiece is abutted against the abutting part; then, fill in the interval that forms between the inner wall of body with interference portion to make the outer wall of interference portion and butt portion and the inner wall interference fit of dress card portion, with the rigidity of assurance butt portion and interference portion in the body inside, and then play the effect of spacing work piece.

In any of the above technical solutions, the abutting portion is an abutting block.

In this technical scheme, butt joint piece can be selected for use to butt joint piece's structure and the inside shape phase-match of body are guaranteed, the butt joint effect of butt joint portion to the work piece is guaranteed simultaneously.

In any one of the above technical solutions, the interference portion is a fixing ring, and a fracture is arranged on the fixing ring.

In this technical scheme, interference portion optional retainer plate to establish the periphery of butt portion with the retainer plate cover. In addition, be provided with the fracture on the retainer plate, so that the retainer plate has certain contractility, when filling in the interval that forms between the inner wall of body with the retainer plate like this, the retainer plate can produce certain deformation, with the inner wall tight fit of guaranteeing interference portion and the outer wall of butt portion and dress card portion, promote the interference magnitude of interference portion and the outer wall of butt portion and dress card portion, guarantee that butt portion and interference portion are firm in the inside position of body, promote the butt intensity of locating part to the work piece, promote the butt ability of locating part to the work piece.

In any of the above technical solutions, the breaking size of the fracture is greater than 0mm and less than or equal to 20 mm.

In the technical scheme, the breaking size of the fracture is set to be more than 0mm and less than or equal to 20 mm. Like this, through the disconnection size of reasonable setting port, can guarantee that the retainer plate has certain contractility, guarantee that the retainer plate can produce suitable deformation at this internal to guarantee the interference portion and the outer wall of butt portion and the inner wall interference fit of dress card portion. And, the breaking dimension of design fracture is greater than 0mm and is less than or equal to 20mm, can not cause the damage to the intensity of retainer plate self, has guaranteed the life of retainer plate.

In any of the above technical solutions, the card loading part is a card loading opening, and a chamfer is formed at an opening end of the card loading opening; the angle of the chamfer is greater than or equal to 50 degrees and less than or equal to 70 degrees; wherein the inner edge of the chamfer is disposed lower than the outer edge of the chamfer.

In this technical scheme, dress card portion is dress card mouth, guarantees that the work piece can stretch into the inside of dress card mouth. In addition, the opening end of the installing opening is provided with a chamfer, and the inner edge of the chamfer is lower than the outer edge of the chamfer so that the workpiece can extend into the inside of the installing opening.

In particular, the present invention optimizes the chamfer to ensure that the angle of the chamfer is greater than or equal to 50 ° and less than or equal to 70 °. Like this, can guarantee that the work piece when stretching into dress bayonet socket initial, and have sufficient clearance between the inside wall of dress bayonet socket, and then provide certain offset for the work piece for under the condition that work piece and dress bayonet socket have certain offset, still can stretch into in the dress bayonet socket smoothly.

In any of the above technical solutions, the outer edge of the chamfer extends to the peripheral side outer wall of the body; and/or the chamfered inner edge extends to the peripheral side inner wall of the body.

In this technical solution, the outer edge of the chamfer extends to the peripheral side outer wall of the body, and the inner edge of the chamfer extends to the peripheral side inner wall of the body. Like this, can guarantee the angle of chamfer to very big degree to promote the guide effect of chamfer to the work piece, guarantee that the work piece still can stretch into in the dress bayonet socket smoothly with the dress bayonet socket under the condition that has certain offset. Specifically, the chamfer is tapered from an outer edge of the chamfer to an inner edge of the chamfer.

In any of the above technical solutions, the card loading part is a card loading opening, and the inner side wall of the card loading opening is constructed as a working wall surface and an avoiding wall surface which are connected; the plurality of working wall surfaces and the plurality of avoiding wall surfaces are alternately arranged along the circumferential direction of the card installing port; wherein, the working wall surface is a plane, and the avoiding wall surface is a cambered surface.

In this technical scheme, dress card portion is dress card mouth, guarantees that the work piece can stretch into the inside of dress card mouth. In addition, the inner side wall of the mounting opening is formed as a working wall surface and an escape wall surface which are connected. The plurality of working wall surfaces and the plurality of avoiding wall surfaces are alternately arranged along the circumferential direction of the bayonet, the working wall surfaces are constructed into planes, and the avoiding wall surfaces are constructed into cambered surfaces.

When the workpiece extends into the clamping opening, the workpiece is contacted with the working wall surface, so that the working wall surface serves as a bearing wall surface to drive the workpiece to rotate. The avoiding wall surface is separated from the working wall surface, so that the workpiece can be ensured to have enough clearance between the avoiding wall surface and the workpiece when extending into the card loading port initially, and further a certain offset is provided for the workpiece, so that the workpiece can still smoothly extend into the card loading port under the condition that the workpiece and the card loading port have a certain offset.

In any of the above technical solutions, an intersection line of planes where two adjacent working wall surfaces are located is located on the avoidance wall surface; the clamping part is cut out by a plane perpendicular to the axis of the body, and in the cross section, the distance from the intersection point of the working wall surface and the avoiding wall surface to the intersection line is equal to the length of the working wall surface.

In the technical scheme, a polygon is enclosed by planes of a plurality of working wall surfaces, and the avoiding wall surfaces are positioned at corners of the polygon. In addition, the intersection line of the planes of the two adjacent working wall surfaces is located on the avoiding wall surface and is located at the central position of the avoiding wall surface, so that the working wall surfaces are matched with the avoiding wall surface, and when the workpiece extends into the inside of the card loading port, the corners of the workpiece are just located at the central position of the avoiding wall surface.

In addition, the mounting portion is cut out by a plane perpendicular to the axis of the body, and in the cut-out section, the distance from the intersection point of the working wall surface and the avoiding wall surface to the intersection line is equal to the length of the working wall surface. Like this, guaranteed the work wall and dodged the wall and in the circumference size distribution of dress bayonet socket to guarantee to dodge the wall and have sufficient size ratio along the circumference of dress bayonet socket, and then guaranteed the effect of dodging the wall to the work piece, make under the condition that work piece and dress bayonet socket have certain offset, still can stretch into in the dress bayonet socket smoothly.

In any of the above technical solutions, the body further has a mounting opening, and the mounting opening and the mounting and clamping portion are located at two opposite ends of the body; the mounting opening can be used for placing a driving part, a gap is formed between the inner side wall of the mounting opening and the driving part, and the gap is larger than or equal to 0.1cm and smaller than or equal to 0.3 cm.

In the technical scheme, the body is also provided with an installation opening. The mounting opening and the clamping portion are located at two opposite ends of the body and are distributed along the axial direction of the body, and the mounting opening can be used for being connected with an external driving part, so that the sleeve can rotate under the driving of the driving part, and then a workpiece is assembled.

In addition, after the driving part stretches into the mounting opening, a certain gap exists between the driving part and the inner wall of the mounting opening, so that the sleeve has a certain moving amount, and a workpiece can conveniently stretch into the clamping part from another angle.

In any of the above technical solutions, the body is hollow to form a card-mounting portion and a mounting opening.

In the technical scheme, the interior of the body is hollow, and the mounting opening and the clamping part are formed at two ends of the body respectively so as to ensure that the sleeve clamps the workpiece and ensure the self-mounting of the sleeve.

In any one of the above technical solutions, the limiting member is located between the mounting portion and the mounting opening.

In this technical scheme, set up the locating part between dress card portion and installing port, on the one hand rationally set up the position of locating part to guarantee the limiting displacement of locating part to the work piece, on the other hand keeps apart work piece and driver part through the locating part, avoids driver part to cause the damage to the work piece.

The utility model discloses the second aspect provides an assembly fixture, include: a drive member; according to the sleeve in the technical scheme, the sleeve is arranged on the driving part and can rotate under the driving of the driving part.

The utility model provides an assembly fixture, include as above-mentioned arbitrary technical scheme's sleeve. Thus, the overall benefits of the sleeve described above are not discussed here.

Specifically, during use, the sleeve can be driven to rotate by the driving part so as to assemble the workpiece to a specified position through the sleeve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a sleeve according to an embodiment of the present invention;

fig. 2 is a schematic view of another perspective of a sleeve according to an embodiment of the present invention;

FIG. 3 is a front view of a sleeve according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of the sleeve of FIG. 3;

FIG. 5 is a cross-sectional view of the sleeve of FIG. 3 taken along B-B;

FIG. 6 is a top view of the sleeve shown in FIG. 3;

FIG. 7 is a bottom view of the sleeve of FIG. 3;

fig. 8 is a schematic structural view of an abutment in the sleeve according to an embodiment of the present invention;

FIG. 9 is a top view of the abutment shown in FIG. 8;

FIG. 10 is a front view of the abutment shown in FIG. 8;

FIG. 11 is a side view of the abutment shown in FIG. 8;

fig. 12 is a schematic view of the interference portion of the sleeve according to an embodiment of the present invention;

fig. 13 is a front view of the interference portion shown in fig. 12.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 13 is:

102, 104 clamping parts, 106 limiting parts, 108 abutting parts, 110 interference parts, 112 fractures, 114 chamfers, 116 working wall surfaces, 118 avoiding wall surfaces and 120 mounting openings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Sleeves and assembly tooling provided in accordance with some embodiments of the present invention are described below with reference to fig. 1-13.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 is provided with a clamping part 104, and can clamp a workpiece through the clamping part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104.

Wherein, after the work piece dress card to dress card portion 104, locating part 106 can be used to the butt work piece, plays certain limiting displacement, guarantees that the work piece stretches into the inside volume of stretching into of dress card portion 104, avoids work piece and supporting part and telescopic body 102 to take place to collide with.

Specifically, the utility model provides a sleeve can be used to work pieces such as installation screw, and above-mentioned work piece generally all matches the gasket and uses. Therefore, in the working process, the end of the workpiece extends into the clamping portion 104 of the body 102, and abuts against the end of the workpiece through the limiting member 106, so that the workpiece is ensured to extend into the clamping portion 104, the size of the workpiece is proper, a certain interval is reserved between the gasket sleeved on the workpiece and the body 102, and the gasket and the body 102 are ensured to be separated from each other and not to be contacted. Therefore, the gasket cannot be indented or damaged in the assembling process, and the sleeve cannot be damaged in the using process.

In addition, the limiting member 106 is detachably disposed in the body 102, and the position in the body 102 is adjustable. Therefore, before the sleeve is used, the position of the limiting member 106 in the body 102 can be adjusted according to actual conditions, so that the sleeve is suitable for assembling different workpieces, and the universality of the sleeve is realized. That is, in this embodiment, the structure of the existing standard sleeve does not need to be changed, the design scheme and the processing tool of the existing standard sleeve do not need to be changed, and only the limiting member 106 needs to be added in the standard sleeve to adjust the size of the workpiece extending into the clamping portion 104, so that the method has extremely strong applicability and universality, and has a high economic value.

It should be noted that the preset height of the limiting element 106 is the height of the limiting element 106 itself, and can be designed according to actual situations. When the depth of the card installing portion 104 is deeper, the preset height of the limiting member 106 can be properly increased; when the depth of the card installing portion 104 is shallow, the preset height of the limiting member 106 can be properly reduced to ensure that the workpiece extends into the card installing portion 104 with a proper size and a certain interval is reserved between the gasket sleeved on the workpiece and the body 102.

Therefore, the sleeve provided by the utility model is provided with the limiting part 106 with a preset height in the body 102, and under the condition of not changing the specific structure of the quasi-sleeve, the spacer is ensured to be separated from the body 102 without contacting, thereby ensuring that the sleeve can not damage the workpiece and the matching parts thereof in the using process; and can use with the drive unit cooperation, realize the automatic assembly to the work piece, promote work efficiency.

As shown in fig. 1 and 2, a second embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 is provided with a clamping part 104, and can clamp a workpiece through the clamping part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104.

In this embodiment, further, as shown in fig. 3 and 4, the retaining member 106 includes an abutment portion 108 and an interference portion 110 that are cooperatively used. The abutment 108 is disposed inside the body 102 with a certain spacing from the inner wall of the body 102; the interference portion 110 is sleeved on the abutting portion 108 and located at the spaced position, so that the interference portion 110 is simultaneously contacted with the outer wall of the abutting portion 108 and the inner wall of the clamping portion 104, the abutting portion 108 is connected with the body 102 into a whole through interference fit, certain limiting effect is achieved on a workpiece through the abutting portion 108 and the interference portion 110 in the using process, and the workpiece is guaranteed to stretch into the size of the clamping portion 104.

Specifically, before the sleeve is used, the abutting part 108 is firstly placed inside the body 102 according to actual conditions, so that a proper distance between the abutting part 108 and the end part of the body 102 is ensured, and the body 102 cannot be contacted with a gasket sleeved on a workpiece under the condition that the workpiece is abutted against the abutting part 108; then, the interference portion 110 is plugged into the space formed between the inner walls of the body 102, so that the interference portion 110 is in interference fit with the outer wall of the abutting portion 108 and the inner wall of the clamping portion 104, the abutting portion 108 and the interference portion 110 are fixed in the position inside the body 102, and the effect of limiting the workpiece is achieved.

In this embodiment, further, as shown in fig. 8, 9, 10 and 11, the abutment portion 108 may be selected as an abutment block, and it is ensured that the structure of the abutment block matches the internal shape of the body 102, while ensuring the abutment effect of the abutment portion 108 on the workpiece.

In this embodiment, further, as shown in fig. 12 and 13, the interference portion 110 may be selected from a fixing ring to fit the fixing ring to the outer periphery of the abutment portion 108. In addition, a fracture 112 is arranged on the fixing ring, so that the fixing ring has certain shrinkage capacity, and thus when the fixing ring is plugged into an interval formed between inner walls of the body 102, the fixing ring can generate certain deformation, so as to ensure that the interference part 110 is tightly matched with the outer wall of the abutting part 108 and the inner wall of the clamping part 104, and increase the interference magnitude of the interference part 110, the outer wall of the abutting part 108 and the inner wall of the clamping part 104, so as to ensure that the positions of the abutting part 108 and the interference part 110 inside the body 102 are stable, increase the abutting strength of the limiting part 106 to a workpiece, and increase the abutting capacity of the limiting part 106 to the workpiece.

In this embodiment, further, as shown in fig. 12, the breaking dimension L3 of the setting discontinuity 112 is greater than 0mm and less than or equal to 20 mm. Thus, by reasonably setting the disconnection size L3 of the port, the fixing ring can be ensured to have certain contractibility, and the fixing ring can be ensured to deform appropriately in the body 102, so as to ensure that the interference part 110 is in interference fit with the outer wall of the abutting part 108 and the inner wall of the clamping part 104. Moreover, the breaking size L3 of the designed fracture 112 is larger than 0mm and smaller than or equal to 20mm, the strength of the fixing ring is not damaged, and the service life of the fixing ring is ensured.

Specifically, the breaking dimension L3 of the discontinuity 112 may be 2mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, or the like.

As shown in fig. 1 and 2, a third embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 is provided with a clamping part 104, and can clamp a workpiece through the clamping part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104.

In this embodiment, as further shown in fig. 3 and 4, the chucking portion 104 is a chucking opening, and ensures that the workpiece can be inserted into the chucking opening. Further, the opening end of the chucking opening is formed with a chamfer 114, and it is ensured that the inner edge of the chamfer 114 is disposed lower than the outer edge of the chamfer 114, so that the workpiece protrudes into the inside of the chucking opening.

In particular, the present embodiment optimizes chamfer 114 to ensure that angle α of chamfer 114 is greater than or equal to 50 ° and less than or equal to 70 °. Like this, can guarantee that the work piece when stretching into dress bayonet socket initial, and have sufficient clearance between the inside wall of dress bayonet socket, and then provide certain offset for the work piece for under the condition that work piece and dress bayonet socket have certain offset, still can stretch into in the dress bayonet socket smoothly.

As shown in fig. 4, the outer edge of chamfer 114 extends to the peripheral side outer wall of body 102, and the inner edge of chamfer 114 extends to the peripheral side inner wall of body 102. Therefore, the angle alpha of the chamfer 114 can be ensured to a great extent, so that the guiding effect of the chamfer 114 on the workpiece is improved, and the workpiece can still smoothly extend into the card installing port under the condition that the workpiece and the card installing port have a certain offset. Specifically, the chamfer 114 is tapered from an outer edge of the chamfer 114 to an inner edge of the chamfer 114.

In a specific embodiment, as shown in fig. 4, the angle α of the chamfer 114 refers to: the included angle formed by any generatrix of the chamfer 114 and any straight line parallel to the central axis of the body 102 is large or small.

In a specific embodiment, the angle α of the chamfer 114 may be 50 °, 55 °, 60 °, 65 °, 70 °, and the like, which is not specifically limited, and can be implemented as long as the workpiece can be ensured to smoothly extend into the mounting opening.

In the specific embodiment, due to the design of the chamfer 114, particularly, the angle α of the chamfer 114 is designed to be 50 ° to 70 °, so that the workpiece can smoothly extend into the card loading port even if a certain offset exists between the workpiece and the card loading port. Therefore, the sleeve provided by the embodiment can be applied to a robot, and automatic assembly of workpieces is achieved through the robot.

As shown in fig. 1 and 2, a fourth embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 is provided with a clamping part 104, and can clamp a workpiece through the clamping part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104.

In this embodiment, as shown in fig. 4 and 5, the chucking portion 104 is a chucking opening, and ensures that the workpiece can be inserted into the chucking opening. Furthermore, the inner side walls of the mounting openings are designed as a connecting working wall 116 and an escape wall 118. Wherein the plurality of working wall surfaces 116 and the plurality of escape wall surfaces 118 are alternately arranged in the circumferential direction of the bayonet, and the working wall surfaces 116 are configured as a plane, and the escape wall surfaces 118 are configured as a curved surface.

When the workpiece extends into the card loading opening, the workpiece contacts the working wall surface 116, so that the working wall surface 116 serves as a bearing wall surface to drive the workpiece to rotate. The avoiding wall surface 118 is separated from the working wall surface 116, so that an enough gap is formed between the avoiding wall surface 118 and the workpiece when the workpiece initially extends into the card loading port, a certain offset is provided for the workpiece, and the workpiece can still smoothly extend into the card loading port under the condition that the workpiece and the card loading port have a certain offset.

In this embodiment, as further shown in fig. 5, the planes of the working walls 116 enclose a polygon, and the escape walls 118 are located at the corners of the polygon. In addition, the intersection line of the planes of the two adjacent working wall surfaces 116 is located on the avoiding wall surface 118 and is located at the center of the avoiding wall surface 118, so that the working wall surfaces 116 are matched with the avoiding wall surface 118, and when the workpiece extends into the inside of the card loading port, the corners of the workpiece are just located at the center of the avoiding wall surface 118.

Further, as shown in fig. 5, the distance L1 from the intersection of the working wall surface 116 and the escape wall surface 118 to the intersection is equal to the length L2 of the working wall surface 116 in the cross section of the attachment portion 104 taken in a plane perpendicular to the axis of the body 102. Like this, guaranteed that work wall 116 and dodge wall 118 are at the circumference size distribution of dress bayonet socket to guarantee that dodge wall 118 has sufficient size ratio along the circumference of dress bayonet socket, and then guaranteed dodge wall 118 to the effect of dodging of work piece, make under the condition that work piece and dress bayonet socket have certain offset, still can stretch into in the dress bayonet socket smoothly.

In the exemplary embodiment, as shown in FIG. 5, the dashed line represents an extension of the working wall 116; the distance L1 from the intersection of the working wall surface 116 and the avoidance wall surface 118 to the intersection is equal to the length L2 of the working wall surface 116. Therefore, in cross section, an extension of the plurality of working wall surfaces 116 may form a polygon, and on one side of the polygon, a chord length of any one of the working wall surfaces 116 on the extension is equal to 1/3 of the side.

In an embodiment, due to the design of the working wall surface 116 and the avoiding wall surface 118, especially the avoiding wall surface 118, even if a certain offset exists between the workpiece and the card loading opening, the workpiece can still smoothly extend into the card loading opening. Therefore, the sleeve provided by the embodiment can be applied to a robot, and automatic assembly of workpieces is achieved through the robot.

As shown in fig. 1 and 2, a fifth embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 is provided with a clamping part 104, and can clamp a workpiece through the clamping part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104.

In this embodiment, further, as shown in fig. 2 and 7, the body 102 also has a mounting opening 120. The mounting openings 120 and the clamping portions 104 are located at two opposite ends of the body 102 and are distributed along the axial direction of the body 102, and the mounting openings 120 can be used for connecting an external driving component, so that the sleeve rotates under the driving of the driving component to assemble a workpiece.

In addition, after the driving part stretches into the mounting opening 120, a certain gap exists between the driving part and the inner wall of the mounting opening 120, the gap is guaranteed to be larger than or equal to 0.1cm and smaller than or equal to 0.3cm, and then the sleeve has a certain moving amount, so that the driving part can stretch into the mounting opening 120 conveniently, and a workpiece can stretch into the clamping part 104 conveniently from another angle.

In this embodiment, as shown in fig. 6 and 7, the body 102 is hollow, and the mounting opening 120 and the mounting portion 104 are formed at both ends of the body 102, respectively, to ensure that the sleeve mounts the workpiece and to ensure that the sleeve itself is mounted.

In this embodiment, further, the limiting member 106 is disposed between the clamping portion 104 and the mounting opening 120, on one hand, the position of the limiting member 106 is set reasonably to ensure the limiting effect of the limiting member 106 on the workpiece, and on the other hand, the workpiece and the driving member are isolated by the limiting member 106, so as to prevent the driving member from damaging the workpiece.

In a specific embodiment, the gap between the driving member and the inner wall of the mounting opening 120 may be 0.1cm, 0.15cm, 0.2cm, 0.25cm, 0.3cm, etc., and is not particularly limited herein, as long as the workpiece can be ensured to smoothly extend into the card loading portion 104.

In the specific embodiment, due to the design of the mounting opening 120, the gap between the driving part and the inner wall of the mounting opening 120 is especially ensured to be 0.1cm to 0.3cm, and the workpiece can smoothly extend into the card loading opening even if a certain offset exists between the workpiece and the card loading opening. Therefore, the sleeve provided by the embodiment can be applied to a robot, and automatic assembly of workpieces is achieved through the robot.

The utility model discloses a sixth embodiment provides an assembly fixture, include: a drive member, but a sleeve according to any of the above claims.

The assembly fixture provided by the embodiment comprises the sleeve in any one of the embodiments. Thus, the overall benefits of the sleeve described above are not discussed here.

Specifically, the driving component can be a robot hand of a robot, and the robot can automatically tighten the workpiece. During operation, the robot arm is coupled to the sleeve through the mounting opening 120 and drives the sleeve to rotate to assemble the workpiece mounted on the mounting portion 104 to a desired position.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a sleeve, including: a body 102 and a stop 106. The body 102 has a card-loading part 104, and can load and clamp a workpiece through the card-loading part 104; the retaining member 106 is disposed inside the body 102 and can be used to ensure that the workpiece extends into the clamping portion 104. After the workpiece is mounted and clamped on the clamping portion 104, the limiting member 106 can be used for abutting against the workpiece to play a certain limiting role, so that the workpiece can be ensured to stretch into the extending amount inside the clamping portion 104, and the workpiece and the matching components thereof can be prevented from colliding with the sleeve body 102.

In this embodiment, further, as shown in fig. 3 and 4, the retaining member 106 includes an abutment portion 108 and an interference portion 110 that are cooperatively used. Before using the sleeve, the abutment 108 is placed inside the body 102 and the distance between the abutment 108 and the end of the body 102 is guaranteed to be appropriate; then, the interference portion 110 is inserted into the space formed between the inner walls of the body 102, so that the interference portion 110 is in interference fit with the outer wall of the abutting portion 108 and the inner wall of the card-mounting portion 104, so as to ensure that the abutting portion 108 and the interference portion 110 are fixed in position inside the body 102. Further, the abutment 108 may be an abutment block and the interference portion 110 may be a retaining ring. And a break 112 is provided on the retainer ring to provide the retainer ring with a certain contractibility.

In this embodiment, as shown in fig. 4, the clamping portion 104 is a clamping opening, and an opening end of the clamping opening is formed with a chamfer 114 to facilitate the workpiece to extend into the inside of the clamping opening. Specifically, the angle α of the chamfer 114 is greater than or equal to 50 ° and less than or equal to 70 °, so that the workpiece can still smoothly extend into the chucking opening when the workpiece has a certain offset from the chucking opening.

In this embodiment, further, as shown in fig. 5, the inner side wall of the mounting opening is configured as a planar working wall surface 116 and a curved escape wall surface 118 which are connected, and the plurality of working wall surfaces 116 and the plurality of escape wall surfaces 118 are alternately arranged in the circumferential direction of the mounting opening. Further, the mounting portion 104 is cut out in a plane perpendicular to the axis of the body 102, and in the cut-out section, the distance from the intersection of the working wall surface 116 and the escape wall surface 118 to the intersection is equal to the length of the working wall surface 116, ensuring the escape action of the escape wall surface 118 to the workpiece.

In this embodiment, further, as shown in fig. 2 and 7, the body 102 further has a mounting opening 120, and the mounting opening 120 can be used for connecting an external driving component; after the driving member is inserted into the mounting opening 120, a gap of 0.1cm to 0.3cm is formed between the driving member and the inner wall of the mounting opening 120, so that the workpiece can be inserted into the clamping portion 104 from another angle. Specifically, as shown in fig. 6 and 7, the inside of the body 102 is hollow, and the mounting opening 120 and the card-mounting portion 104 are formed at both ends of the body 102, respectively; the limiting member 106 is disposed between the clamping portion 104 and the mounting opening 120 to ensure the limiting action of the limiting member 106 on the workpiece and isolate the workpiece from the driving component.

In the related art, the sleeve is manually driven to assemble workpieces such as screws, and automatic driving of the sleeve cannot be realized. The reason is that: in the related technology, the clearance between the inner wall of the sleeve and the workpiece is small, and when the workpiece and the sleeve have large deviation, the sleeve can not be sleeved into the workpiece easily, so that the sleeve is clamped above the workpiece to idle; in addition, in the related technology, the depth of the sleeve is large, a limit structure is not provided, and the sleeve is easy to nest and transition and is contacted with a gasket of a workpiece to generate an indentation.

Therefore, as shown in fig. 1 and 2, a second embodiment of the present invention provides a sleeve suitable for a robot, which can reliably sleeve a workpiece such as a hexagon screw head on the sleeve, so as to avoid the problem that the idle rotation caused by the absence of the sleeve workpiece affects the qualified rate of tightening. Moreover, as shown in fig. 3 and 4, the chamfer 114 at the opening end of the mounting opening is reasonably arranged, the opening area of the mounting opening 120 is increased, the limiting part 106 is arranged, and finally a suitable sleeve is matched, so that the success rate of automatically sleeving the sleeve into the workpiece during automatic assembly of the workpiece is improved, and the overall qualified rate is further improved.

Specifically, as shown in fig. 1 and 2, the sleeve includes a body 102 and a retaining member 106, and the retaining member 106 includes an abutting portion 108 and an interference portion 110 that are used in cooperation. As shown in fig. 4, the chamfer 114 at the opening end of the mounting opening is enlarged to ensure that the chamfer 114 is greater than or equal to 50 degrees and less than or equal to 70 degrees; as shown in fig. 5, a relief circle is provided inside the chucking opening to form a relief wall surface 118, so that the workpiece can be smoothly introduced even when there is a large variation. As shown in fig. 7, the opening area of the mounting opening 120 is increased, so that the sleeve can have larger moving clearance, and the success rate of sleeving the workpiece is further improved.

In addition, a limiting member 106 is disposed inside the body 102 to limit the amount of the workpiece extending into the sleeve, and to prevent the sleeve from directly contacting the gasket. In particular, due to machining errors and measurement errors, each socket needs to be matched with the position of the position-limiting member 106 in the body 102, and it is preferable that the workpiece cannot contact the gasket after being tightened, but the gap between the gaskets should be reduced as much as possible. Therefore, the present invention provides a manner of using the abutting portion 108 and the interference portion 110 in a matching manner, wherein the abutting portion 108 has a larger interval with the interior of the sleeve body 102, and the interference portion 110 is in interference fit with the sleeve; after the position of the position limiter 106 in the body 102 is matched, the interference portion 110 is hammered into the sleeve to make the abutting portion 108 and the body 102 form a whole.

The utility model provides a sleeve is applicable to robot automatic processing, through setting up reasonable chamfer 114 and installing port 120's size to and set up butt portion 108 and the cooperation of interference portion 110 and use, through reasonable mounting means, make the work piece can more smooth automated guidance advance dress card portion 104, great promotion the work piece stretch into telescopic success rate, and then the whole qualification rate of lifting means.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sleeve, comprising:

the body is provided with a clamping part, and the clamping part can be used for clamping a workpiece;

the limiting part is provided with a preset height and arranged in the body and can be used for ensuring that the workpiece extends into the clamping part.

2. The socket of claim 1, wherein said retainer comprises:

the abutting part is arranged in the body and has a gap with the inner wall of the body;

the interference part is sleeved on the abutting part and is in interference fit with the outer wall of the abutting part and the inner wall of the clamping part.

3. The sleeve of claim 2,

the abutting part is an abutting block; and/or

The interference portion is the retainer plate, be provided with the fracture on the retainer plate, the disconnection size of fracture is greater than 0mm to be less than or equal to 20 mm.

4. A sleeve according to any one of claims 1 to 3,

the clamping part is a clamping opening, and a chamfer is formed at the opening end of the clamping opening;

the angle of the chamfer is greater than or equal to 50 degrees and less than or equal to 70 degrees;

wherein an inner edge of the chamfer is disposed lower than an outer edge of the chamfer.

5. The sleeve of claim 4,

the outer edge of the chamfer extends to the peripheral side outer wall of the body; and/or

The inner edge of the chamfer extends to the inner wall of the periphery of the body.

6. A sleeve according to any one of claims 1 to 3,

the card installing part is a card installing opening, and the inner side wall of the card installing opening is constructed into a working wall surface and an avoiding wall surface which are connected;

the plurality of working wall surfaces and the plurality of avoiding wall surfaces are alternately arranged along the circumferential direction of the bayonet;

the working wall surface is a plane, and the avoiding wall surface is an arc surface.

7. The sleeve of claim 6,

the intersection line of the planes of the two adjacent working wall surfaces is positioned on the avoidance wall surface;

and in the section, the distance from the intersection point of the working wall surface and the avoiding wall surface to the intersection line is equal to the length of the working wall surface.

8. A sleeve according to any one of claims 1 to 3,

the body is also provided with mounting ports, and the mounting ports and the clamping parts are positioned at two opposite ends of the body;

the mounting opening can be used for placing a driving part, a gap is formed between the inner side wall of the mounting opening and the driving part, and the gap is larger than or equal to 0.1cm and smaller than or equal to 0.3 cm.

9. The sleeve of claim 8,

the body is hollow so as to form the clamping part and the mounting opening; and/or

The limiting part is located between the clamping part and the mounting opening.

10. The utility model provides an assembly fixture which characterized in that includes:

a drive member;

a sleeve as claimed in any one of claims 1 to 9, which is mounted on the drive member and is rotatable by the drive member.