CN106625372B - Sleeve and manufacturing method thereof - Google Patents
Sleeve and manufacturing method thereof Download PDFInfo
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- CN106625372B CN106625372B CN201611178612.5A CN201611178612A CN106625372B CN 106625372 B CN106625372 B CN 106625372B CN 201611178612 A CN201611178612 A CN 201611178612A CN 106625372 B CN106625372 B CN 106625372B
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- hole
- sleeve
- sleeving
- embedding
- stop block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
- B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a sleeve and a manufacturing method thereof, wherein the sleeve comprises a sleeving end for connecting a driving tool and an embedding end for embedding a screw cap, the sleeving end is provided with a square sleeving hole, the embedding end is provided with an embedding hole, the central line position of the four inner walls of the sleeving hole is provided with an inwards concave bead groove, and a stop block is arranged on the bead groove. This sleeve goes out the pearl slot at the inner wall punching press in cup jointing the hole, and when the sleeve was connected with box spanner, the ball that the spanner connects removed in the pearl slot, can reduce the wearing and tearing that sleeve and joint, extension sleeve life, and the dog is gathered into to the material of pearl slot internal secondary punching press, and the dog can form the joint with the ball, has realized the spacing of sleeve with the spanner and is connected, prevents to deviate from when the cooperation is used.
Description
Technical Field
The invention relates to the field of sleeve manufacturing, in particular to a sleeve and a manufacturing method thereof.
Background
The sleeve is a special tool for tightening or loosening screws and is mainly applied to the fields of machining, automobile maintenance, building construction and the like. The telescopic both ends have and connect the hole, and one end cup joints on box spanner's joint during the use, and the other end cup joints on the fastener, and the sleeve can drive the fastener and rotate when rotating the spanner, and specially adapted twists the fastener that the space is very narrow and small or sunken very depths. However, the joint of the socket wrench is square, and is easily separated from the socket connection, so that the use difficulty is increased, and even safety accidents can be caused. In the prior art, a steel ball is arranged in a joint of a wrench, a clamping groove is arranged in a socket connecting hole, and the steel ball is clamped with the clamping groove during connection, so that the limited connection between the wrench and the socket is realized. But because spanner and sleeve can produce great torsion in the use for produce great wearing and tearing to the draw-in groove after long-time the use, lead to the draw-in groove to warp, the anticreep effect weakens.
In addition, the existing sleeve production process needs cold heading forming and turning, the sleeve blank needs to be turned after the cold heading forming, and the middle part of the inner wall of the sleeve connecting hole is turned to form a clamping groove. At present, the speed of the sleeve blank produced by the cold header is 120-150 pieces/min, and the production speed of the clamping groove formed by secondary turning is 40-50 pieces/min, so that the production period is prolonged by the secondary forming process, the labor and material resources are increased in cost, and a large amount of turning waste is generated.
In view of the above-mentioned drawbacks, the inventor of the present invention has finally obtained a sleeve and a method for manufacturing the same of the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that the sleeve comprises a sleeving end for connecting a driving tool and an embedding end for embedding a nut, wherein the sleeving end is provided with a square sleeving hole, the embedding end is provided with an embedding hole, the central line position of the four inner walls of the sleeving hole is provided with an inwards concave bead groove, and the bead groove is provided with a stop block.
Preferably, the bead groove is arc-shaped, the lower edge of the stopper is perpendicular to the wall surface of the bead groove, the stopper divides the bead groove into an upper section close to the orifice of the sleeve hole and a lower section close to the bottom of the sleeve hole, the length of the bead groove is the same as the depth of the sleeve hole, and the length of the lower section of the bead groove is greater than that of the upper section.
Preferably, the radial depth of the upper section of the bead groove is greater than that of the lower section, and the protruding position of the stop block does not exceed the wall surface of the inner wall of the sleeving hole.
Preferably, the embedding hole is a hexagonal hole, and the corners of the sleeve hole and the embedding hole are rounded corners.
Preferably, the inner wall of the embedding hole is circumferentially provided with a boss.
Preferably, the sleeve is in a shape of a convex outside, a large end of the sleeve is the sleeving end, and a small end of the sleeve is the embedding end.
A method of manufacturing a sleeve comprising the steps of:
step 1: blanking and positioning a cylindrical bar on a cold header, and shaping two end faces of the bar;
step 2: selecting one end of a bar as an embedding end, and punching and forming an embedding hole on the end face of the embedding end by using a hexagonal punch;
and step 3: selecting the other end of the bar as a sleeving end, and pressing and forming a sleeving hole on the end face of the sleeving end by using a square punch;
and 4, step 4: punching arc bead grooves on the four inner walls of the sleeving holes;
and 5: carrying out secondary stamping on the upper parts of the four bead grooves, and gathering the stamped and deformed materials into a stop block, wherein the protruding position of the stop block does not exceed the wall surface of the inner wall;
step 6: and waste materials in the embedding hole and the sleeving hole are led out.
Preferably, in the step 2, the outer side of the fitting end is circumferentially extruded while forming the fitting hole, so that the outer shape of the bar is in a shape of a convex.
Preferably, in the step 2, a circumferential boss is cold-headed in the middle section of the inner wall of the fitting hole.
Preferably, in the step 2, the four walls of the punch in the step 2 are provided with arc-shaped protrusions, and the sleeving hole and the bead groove in the step 2 and the step 3 are formed in a one-step stamping mode.
Compared with the prior art, the invention has the advantages that:
1, the inner wall of the sleeve sleeving hole is punched with a ball groove, when the sleeve is connected with a wrench, a ball on a wrench joint moves in the ball groove, so that the abrasion of the sleeve and the joint can be reduced, the service life of the sleeve is prolonged, a stop block is accumulated by secondary punching materials in the ball groove and can be clamped with the ball, the limit connection of the sleeve and the wrench is realized, and the sleeve and the wrench are prevented from being separated in a matched use process.
2, the manufacturing method of the sleeve avoids the step of turning the clamping groove in the prior art, realizes one-step forming of the sleeve on a multi-station cold header, has less overall processes, improves the production rate, reduces the generation of turning waste and saves the production cost.
3, the concentricity and the parallelism of the stop dog on the bead groove can be ensured by one-step forming on the multi-position cold header, and the stability of the anti-falling performance is improved.
4, cold heading machine punching press replaces lathe work, avoids the turning to the destruction of metal structure, improves sleeve instrument's rigidity and intensity, improves sleeve instrument life-span.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a first perspective view of a sleeve according to an embodiment;
FIG. 2 is a second perspective view of a sleeve according to an embodiment;
FIG. 3 is a schematic process flow diagram illustrating a method of manufacturing a sleeve according to an embodiment;
FIG. 4 is a perspective view of a sleeve according to an embodiment;
FIG. 5 is a bottom view of a sleeve according to an embodiment;
FIG. 6 is a schematic process flow diagram illustrating a method of manufacturing a sleeve according to an embodiment;
FIG. 7 is a cross-sectional view of an embodiment triple cartridge;
FIG. 8 is a perspective view of a tri-sleeve of an embodiment;
FIG. 9 is a schematic process flow diagram illustrating a method of manufacturing a triple sleeve according to an embodiment.
The figures in the drawings represent:
1. sleeving end 11, sleeving hole 12, ball groove 13, stop block 2, embedding end 21, embedding hole 22 and boss
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1 and 2, a cylindrical sleeve has a sleeve end 1 and a fitting end 2 at two ends, the sleeve end 1 is provided with a sleeve hole 11 for connecting a driving tool, the fitting end 2 is provided with a fitting hole 21 for fitting a nut, and the fitting hole 21 and the sleeve hole 11 are coaxial with the sleeve body.
The sleeving hole 11 is square, the central line positions of the four inner walls of the sleeving hole are all provided with arc bead grooves 12, and the depth of the bead grooves 12 is the same as that of the sleeving hole 11. The ball groove 12 is used as a moving channel of the ball on the socket wrench joint, so that the abrasion of the socket and the joint can be reduced, and the service life of the socket is prolonged. The bead groove 12 is provided with a stop block 13, the stop block 13 divides the bead groove 12 into an upper section close to the orifice of the sleeve hole and a lower section close to the bottom of the sleeve hole, and the length of the lower section is greater than that of the upper section. The stopper 13 is formed by the accumulation of material of the upper section of the bead channel 12 after it is stamped, so that the radial depth of the upper section is greater than the radial depth of the lower section. The protruding position of the stop block 13 does not exceed the wall surface of the inner wall of the sleeve hole 11, and the movement of the wrench joint is not influenced. Dog 13 is used for with connect ball joint, and the lower edge of dog 13 is perpendicular with the wall of pearl slot 12, is difficult for breaking away from behind the ball joint, improves the closely spent of being connected of sleeve and spanner, prevents to drop. The corner of the sleeving hole 11 is a round corner, so that the sleeving hole is conveniently connected with a wrench connector, and abrasion is reduced. The fitting hole 21 of the fitting end 2 is a hexagonal hole for matching a hexagonal nut. The corners of the sleeving hole 1 and the embedding hole 21 are fillets, so that the connection operation is convenient, and the sleeve abrasion is reduced.
During the use, telescopic gomphosis end 2 cup joints on assorted hexagon nut, and hexagon nut matches with gomphosis hole 21 and forms and is connected, and when the sleeve rotated, the nut can follow the rotation. The socket end 1 is connected with a socket wrench, a wrench joint enters the socket hole 11, a ball on the joint slides up and down in the ball groove 12, the ball pops out when sliding to the lower section of the ball groove 12, the joint forms a fixed connection with the lower edge of the stop block 13, the contact surface of the stop block 13 and the ball is less prone to relative sliding, and the socket is prevented from falling off from the wrench. The handle of the socket wrench is rotated, and the nut is rotated through the torque transmitted by the socket, so that the nut is assembled and disassembled. After the assembly and disassembly are completed, the wrench is lifted upwards, the embedding hole 21 is separated from the nut, the quick-release button on the wrench is pressed, the ball on the joint is retracted inwards and separated from the lower part of the stop block 13, the joint is released from the sleeve-joint hole 11, and the separation of the sleeve and the wrench is completed.
As shown in fig. 3, the manufacturing method of the sleeve includes the following steps:
step 1: blanking and positioning a cylindrical bar on a cold header, and shaping two end faces of the bar;
step 2: selecting one end of a bar as an embedding end 2, punching and forming an embedding hole 21 on the end face of the embedding end 2 by using a hexagonal punch, wherein the inner corner of the embedding hole is a round corner, and the embedding hole and the corner are punched and formed in one step;
and step 3: selecting the other end of the bar as a sleeving end 1, and pressing and forming a sleeving hole 11 on the end surface of the sleeving end 1 by using a square punch, wherein the inner corner of the sleeving hole 11 is a round corner, and the sleeving hole and the corner are formed in a punching mode in one step;
and 4, step 4: punching arc bead grooves 12 on the four inner walls of the sleeving hole 11;
and 5: the upper parts of the four bead grooves 12 are punched for the second time, the punched and deformed materials are gathered into the stop blocks 13, the protruding positions of the stop blocks 13 do not exceed the wall surface of the inner wall of the sleeve hole 11, and the stop blocks 13 in the four bead grooves 12 are punched and formed together, so that the concentricity and the parallelism of the four bead grooves can be guaranteed, and the stability of the anti-falling performance is improved;
step 6: the scraps in the fitting hole 21 and the fitting hole 11 are discharged.
The manufacturing method avoids the step of turning the clamping groove in the prior art, realizes one-step forming of the sleeve on the multi-station cold header, has few overall processes, improves the production rate, reduces the generation of turning waste and saves the production cost. The cold header is used for stamping instead of turning, so that the metal structure is prevented from being damaged by turning, the rigidity and the strength of the sleeve tool are improved, and the service life of the sleeve tool is prolonged.
Example two
As shown in fig. 4 and 5, a sleeve has a sleeve end 1 and a fitting end 2 at two ends, the sleeve end 1 is provided with a sleeve hole 11 for connecting a driving tool, the fitting end 2 is provided with a fitting hole 21 for fitting a nut, and the fitting hole 21 and the sleeve hole 11 are coaxial with the sleeve body. The sleeve is in a convex shape, the large end of the sleeve is the sleeving end 1, the small end of the sleeve is the embedded end 1, and the sleeve can be sleeved with the fastener in a narrow position due to the shape, so that the application range is enlarged.
The sleeving hole 11 is square, the central line positions of the four inner walls of the sleeving hole are all provided with arc bead grooves 12, and the depth of the bead grooves 12 is the same as that of the sleeving hole 11. The ball groove 12 is used as a moving channel of the ball on the socket wrench joint, so that the abrasion of the socket and the joint can be reduced, and the service life of the socket is prolonged. The bead groove 12 is provided with a stop block 13, the stop block 13 divides the bead groove 12 into an upper section close to the orifice of the sleeve hole and a lower section close to the bottom of the sleeve hole, and the length of the lower section is greater than that of the upper section. The stopper 13 is formed by the accumulation of material of the upper section of the bead channel 12 after it is stamped, so that the radial depth of the upper section is greater than the radial depth of the lower section. The protruding position of the stop block 13 is flush with the wall surface of the inner wall of the sleeve hole 11, and the movement of the wrench joint is not influenced. The dog 13 is used for with connect ball joint, and the lower edge of dog 13 is perpendicular with the wall of pearl slot 12, improves the tight degree of being connected of sleeve and spanner, prevents to drop. The corner of the sleeving hole 11 is a round corner, so that the sleeving hole is conveniently connected with a wrench connector, and abrasion is reduced. The fitting hole 21 of the fitting end 2 is a hexagonal hole for matching a hexagonal nut. The corners of the sleeving hole 1 and the embedding hole 21 are fillets, so that the connection operation is convenient, and the sleeve abrasion is reduced.
During the use, telescopic gomphosis end 2 cup joints on assorted hexagon nut, and hexagon nut matches with gomphosis hole 21 and forms and is connected, and when the sleeve rotated, the nut can follow the rotation. The socket end 1 is connected with a socket wrench, a wrench joint enters the socket hole 11, a ball on the joint slides up and down in the ball groove 12, the ball pops out when sliding to the lower section of the ball groove 12, and is clamped on the lower edge of the stop block 13 to form fixed connection, so that the socket is prevented from falling off from the wrench. The handle of the socket wrench is rotated, and the nut is rotated through the torque transmitted by the socket, so that the nut is assembled and disassembled. After the assembly and disassembly are completed, the wrench is lifted upwards, the embedding hole 21 is separated from the nut, the quick-release button on the wrench is pressed, the ball on the joint is retracted inwards and separated from the lower part of the stop block 13, the joint is released from the sleeve-joint hole 11, and the separation of the sleeve and the wrench is completed.
As shown in fig. 6, the manufacturing method of the sleeve includes the steps of:
step 1: blanking and positioning a cylindrical bar on a cold header, shaping two end faces of the bar, and pre-punching and forming grooves on the two end faces;
step 2: selecting one end of a bar as an embedding end 2, punching and forming an embedding hole 21 on the end face of the embedding end 2 by using a hexagonal punch, wherein the inner corner of the embedding hole 21 is a round angle, and the embedding hole 21 and the corner are punched and formed in one step to form the embedding hole 21 and extrude the outer side of the embedding end 2 in the circumferential direction so that the outer shape of the bar is in a convex shape;
and step 3: selecting the other end of the bar as a sleeving end 1, and pressing and forming a sleeving hole 11 on the end surface of the sleeving end 1 by using a square punch, wherein the inner corner of the sleeving hole 11 is a round corner, and the sleeving hole and the corner are formed in a punching mode in one step;
and 4, step 4: punching arc bead grooves 12 on the four inner walls of the sleeving hole 11;
and 5: performing secondary stamping on the upper parts of the four bead grooves 12, gathering the stamped and deformed materials into a stop block 13, wherein the protruding position of the stop block 13 does not exceed the wall surface of the inner wall of the sleeving hole 11;
step 6: the scraps in the fitting hole 21 and the fitting hole 11 are discharged.
The manufacturing method avoids the step of turning the clamping groove in the prior art, realizes one-step forming of the sleeve on the multi-station cold header, has few overall processes, improves the production rate, reduces the generation of turning waste and saves the production cost. The cold header is used for stamping instead of turning, so that the metal structure is prevented from being damaged by turning, the rigidity and the strength of the sleeve tool are improved, and the service life of the sleeve tool is prolonged.
EXAMPLE III
As shown in fig. 7 and 8, a sleeve has a sleeve end 1 and a fitting end 2 at two ends, the sleeve end 1 is provided with a sleeve hole 11 for connecting a driving tool, the fitting end 2 is provided with a fitting hole 21 for fitting a nut, and the fitting hole 21 and the sleeve hole 11 are coaxial with the sleeve body. The sleeve is in a convex shape, the large end of the sleeve is the sleeving end 1, the small end of the sleeve is the embedded end 1, and the sleeve can be sleeved with the fastener in a narrow position due to the shape, so that the application range is enlarged.
The sleeving hole 11 is square, the central line positions of the four inner walls of the sleeving hole are all provided with arc bead grooves 12, and the depth of the bead grooves 12 is the same as that of the sleeving hole 11. The ball groove 12 is used as a moving channel of the ball on the socket wrench joint, so that the abrasion of the socket and the joint can be reduced, and the service life of the socket is prolonged. The bead groove 12 is provided with a stop block 13, the stop block 13 divides the bead groove 12 into an upper section close to the orifice of the sleeve hole and a lower section close to the bottom of the sleeve hole, and the length of the lower section is greater than that of the upper section. The stopper 13 is formed by the accumulation of material of the upper section of the bead channel 12 after it is stamped, so that the radial depth of the upper section is greater than the radial depth of the lower section. The protruding position of the stop block 13 does not exceed the wall surface of the inner wall of the sleeve hole 11, and the movement of the wrench joint is not influenced. The stopper 13 is used for clamping the joint ball, and the lower edge of the stopper 13 is vertical to the wall surface of the ball groove 12. The corner of the sleeving hole 11 is a round corner, so that the sleeving hole is conveniently connected with a wrench connector, and abrasion is reduced. The fitting hole 21 of the fitting end 2 is a hexagonal hole for matching a hexagonal nut. The corners of the sleeving hole 1 and the embedding hole 21 are fillets, so that the connection operation is convenient, and the sleeve abrasion is reduced. A boss 22 is arranged on the inner wall of the fitting hole 21 in the circumferential direction, and the top of the boss 22 is located at the middle section of the fitting hole 21. The boss 22 divides the embedding hole into two sections with different sizes, the lower section with smaller size can be sleeved with a hexagonal rod, the sleeve is used as a transmission part, and the inner hexagonal nut is rotated, so that the application range of the sleeve is enlarged.
When the socket is used, the embedded end 2 of the sleeve is sleeved at one end of the matched hexagonal rod, and the other end of the hexagonal rod is inserted into the corresponding inner hexagonal nut. The sleeve joint end 1 is connected with a socket wrench, a wrench joint enters the sleeve joint hole 11, steel balls on the joint slide up and down in the ball groove 12, the steel balls are outwards popped out when sliding to the lower section of the ball groove 12 and are clamped below the stop block 13 to form fixed connection, and the socket is prevented from falling off from the wrench. The handle of the wrench is rotated, and the torque is transmitted through the sleeve and the hexagonal rod to rotationally drive the inner hexagonal nut, so that the assembly and disassembly operation of the fastener is realized. After the assembly and disassembly are completed, the wrench is lifted upwards, the embedding hole 21 is separated from the fastener, the quick-release button on the wrench is pressed, the steel ball on the connector is retracted inwards, the steel ball is separated from the lower part of the stop block 13, the connector is released from the sleeve-joint hole 11, and the separation of the sleeve and the wrench is completed.
As shown in fig. 9, the method for manufacturing the sleeve includes the steps of:
step 1: blanking and positioning a cylindrical bar on a cold header, shaping two end faces of the bar, and pre-punching and forming grooves on the two end faces;
step 2: selecting one end of a bar as an embedding end 2, punching and forming an embedding hole 21 on the end face of the embedding end 2 by using a hexagonal punch, wherein the inner corner of the embedding hole 21 is a round angle, the embedding hole and the corner are punched and formed in one step, the outer side of the embedding end 2 is extruded in the circumferential direction while the embedding hole 21 is formed, the outer shape of the bar is in a convex shape, and a circumferential boss 22 is formed in the middle section of the inner wall of the embedding hole 21 through cold heading;
step 3, step 4: selecting the other end of the bar as a sleeving end 1, and punching a square sleeving hole 11 and a circular bead groove 12 on the end face of the sleeving end 1 by using a punch with circular arc convex blocks on four walls;
and 5: the upper parts of the four bead grooves 12 are punched for the second time, the punched and deformed materials are gathered into a stop block 13, the protruding position of the stop block 13 is not more than the wall surface of the inner wall of the sleeve hole 11, and the stop blocks 13 in the four bead grooves 12 are punched and formed together to ensure the concentricity and the parallelism;
step 6: the waste materials in the fitting hole 2 and the fitting hole 1 are discharged.
The manufacturing method avoids the step of turning the clamping groove in the prior art, realizes one-step forming of the sleeve on the multi-station cold header, has few overall processes, improves the production rate, reduces the generation of turning waste and saves the production cost. The cold header is used for stamping instead of turning, so that the metal structure is prevented from being damaged by turning, the rigidity and the strength of the sleeve tool are improved, and the service life of the sleeve tool is prolonged.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A sleeve is characterized by comprising a sleeving end used for connecting a driving tool and an embedding end used for embedding a nut, wherein the sleeving end is provided with a square sleeving hole, the embedding end is provided with an embedding hole, the central line position of the four inner walls of the sleeving hole is provided with an inward concave axial bead groove, the bead groove is provided with a radial stop block, the stop block divides the bead groove into an upper section close to the hole opening of the sleeving hole and a lower section close to the bottom of the sleeving hole, the length of the bead groove is the same as the depth of the sleeving hole, the length of the lower section of the bead groove is larger than that of the upper section, the radial depth of the upper section of the bead groove is larger than that of the lower section, the lower edge of the stop block is vertical to the wall surface of the bead groove, the protruding position of the stop block does not exceed the wall surface of the sleeving hole, the embedding hole is a hexagonal hole, and corners of the sleeving hole and the embedding hole are round corners, the inner wall of the embedding hole is circumferentially provided with a boss, the outer shape of the sleeve is in a shape like a Chinese character 'tu', the large end of the sleeve is the sleeving end, and the small end of the sleeve is the embedding end; the stop block is formed by accumulating the materials at the upper section of the bead groove after secondary stamping.
2. A method of manufacturing a sleeve for preparing a sleeve according to claim 1, comprising the steps of:
step 1: blanking and positioning a cylindrical bar on a cold header, and shaping two end faces of the bar;
step 2: selecting one end of a bar as an embedding end, and punching and forming an embedding hole on the end face of the embedding end by using a hexagonal punch;
and step 3: selecting the other end of the bar as a sleeving end, and pressing and forming a sleeving hole on the end face of the sleeving end by using a square punch;
and 4, step 4: punching arc bead grooves on the four inner walls of the sleeving holes;
and 5: carrying out secondary stamping on the upper parts of the four bead grooves, and gathering the stamped and deformed materials into a stop block, wherein the protruding position of the stop block does not exceed the wall surface of the inner wall;
step 6: and waste materials in the embedding hole and the sleeving hole are led out.
3. The method of manufacturing a sleeve according to claim 2, wherein in the step 2, the fitting hole is formed and the outer side of the fitting end is circumferentially pressed to form a shape of a "convex" shape on the outer surface of the rod.
4. The method of manufacturing a sleeve according to claim 2, wherein in the step 2, a circumferential projection is cold-headed in a middle section of an inner wall of the fitting hole.
5. The method for manufacturing the sleeve according to claim 2, wherein the four walls of the punch in the step 2 are provided with circular arc bumps, and the socket hole and the bead groove in the steps 3 and 4 are formed in a one-time stamping mode.
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| CN201611178612.5A CN106625372B (en) | 2016-12-19 | 2016-12-19 | Sleeve and manufacturing method thereof |
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| CN201611178612.5A CN106625372B (en) | 2016-12-19 | 2016-12-19 | Sleeve and manufacturing method thereof |
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| CN106625372B true CN106625372B (en) | 2021-07-20 |
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| CN109955037A (en) * | 2017-12-26 | 2019-07-02 | 赖传荣 | The manufacturing method of short sleeve |
| CN108637605A (en) * | 2018-05-15 | 2018-10-12 | 山西航空发动机维修有限责任公司 | A kind of production method of simple six square sets pipe wrench |
| CN109226654A (en) * | 2018-10-26 | 2019-01-18 | 广州小出钢管有限公司 | A kind of processing method of the automobile shock flat recess with tooth pipe |
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| CN109226655A (en) * | 2018-10-26 | 2019-01-18 | 广州小出钢管有限公司 | A kind of processing method of the automobile shock flat recess with tooth flanged pipe |
| CN110052555A (en) * | 2019-05-30 | 2019-07-26 | 东风汽车紧固件有限公司 | A kind of cold forming method and its multi-station mold of interior cubic sleeve nut |
| CN112705907A (en) * | 2019-10-24 | 2021-04-27 | 邱晨 | Manufacturing method and manufacturing device of prefabricated part connecting sleeve |
| CN110821945B (en) * | 2019-11-07 | 2020-11-17 | 北京航空航天大学 | Embedded liquid way rotary joint of cavity transmission shaft and cavity transmission shaft connecting piece |
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|---|---|---|---|---|
| US4800786A (en) * | 1986-11-13 | 1989-01-31 | Easco Hand Tools, Inc. | Elastomeric sleeve for wrench socket and method of manufacture thereof |
| JP5442476B2 (en) * | 2010-02-01 | 2014-03-12 | 中国電力株式会社 | Nut drop prevention socket and ratchet wrench |
| CN201979456U (en) * | 2010-12-28 | 2011-09-21 | 唐山轨道客车有限责任公司 | Blind rivet nut detecting and/or removing instrument |
| CN103846628B (en) * | 2014-03-17 | 2016-08-31 | 宁波固远管件有限公司 | A kind of cold-heading sleeve processing technique |
| CN104999022A (en) * | 2015-07-20 | 2015-10-28 | 宁波斯耐奇金属制品有限公司 | Sleeve cold heading forming technology |
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- 2016-12-19 CN CN201611178612.5A patent/CN106625372B/en active Active
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| CN106625372A (en) | 2017-05-10 |
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