CN111496009A - Internal thread forming device by using hard alloy ball - Google Patents
Internal thread forming device by using hard alloy ball Download PDFInfo
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- CN111496009A CN111496009A CN202010308981.1A CN202010308981A CN111496009A CN 111496009 A CN111496009 A CN 111496009A CN 202010308981 A CN202010308981 A CN 202010308981A CN 111496009 A CN111496009 A CN 111496009A
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- Prior art keywords
- ring
- forming
- internal thread
- transmission part
- hollow pipeline
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a device for forming internal threads by using hard alloy balls, which comprises a thread forming pipe, a ball extrusion assembly and a blank pipe moving assembly, wherein the blank pipe moving assembly is arranged in the thread forming pipe, the thread forming pipe comprises a hollow pipeline, two groups of notches are symmetrically arranged on the pipe wall of the hollow pipeline, one end of the hollow pipeline is respectively and fixedly provided with a first pressing ring and a second pressing ring, balls are arranged between the first pressing ring and the second pressing ring, the ball extrusion assembly is arranged into two groups, the ball extrusion assembly comprises a first motor, a transmission part is fixedly arranged at the output shaft end of the first motor, the transmission part is fixedly connected with a transmission screw rod, the screw rod is far away from the transmission part and is in threaded connection with a shifting block, a sleeve ring is arranged between the two groups of shifting blocks, the inner ring of the sleeve ring is in a conical shape, and the inner ring of the, the screw rod is used for controlling the displacement generated by the pressing of the ball, and the thread forming depth is controlled.
Description
Technical Field
The invention relates to the technical field of internal thread forming devices, in particular to a device for forming internal threads by using hard alloy balls.
Background
In the production and processing of metal pipes, threads, also called as internal threaded pipes, are usually machined on the inner wall of the pipe. In the prior art, internal threads of a blank pipe are usually processed by adopting a drawing and steel ball rolling mode, and the device comprises a rotary rolling mechanism and a drawing mechanism which is arranged at the front end of the blank pipe and used for drawing the blank pipe. The rotary rolling mechanism comprises a rotary motor, a shaft sleeve which rotates under the drive of the rotary motor, a sliding sleeve which stops rotating relative to the shaft sleeve and can slide along the outer wall of the shaft sleeve, a shifting fork which is driven by a cylinder to move along the axial direction, a bearing or a plurality of balls and an inner core with threads. The shaft sleeve is arranged at the periphery of the parison tube, the ball is contacted with the front end face of the shaft sleeve, the inner wall face of the sliding sleeve and the outer wall face of the parison tube, and the inner core is arranged in the parison tube at the position of the ball. The inner wall surface of the sliding sleeve is a conical surface, when the inner wall surface of the sliding sleeve is closer to the parison tube and is contacted with the balls, the conical surface of the sliding sleeve presses the balls downwards, so that the balls extrude the parison tube, the shaft sleeve rotates to drive the sliding sleeve to rotate, the balls contacted with the sliding sleeve are driven by friction force to roll on the outer wall surface of the parison tube, the parison tube is rolled by the balls, the inner wall surface of the parison tube is extruded with the inner core, and threads matched with the threads of the inner core are processed on the inner wall surface. And (3) pulling the blank pipe along the axial direction at a constant speed by the drawing mechanism during rolling to draw out the metal pipe with the processed internal thread. A die can be arranged at the front end cover of the device, and the metal pipe with the processed internal thread passes through the die under the action of a drawing mechanism so as to obtain a finished product.
However, the ball is driven by the cylinder, the extrusion range is not adjustable, namely the thread depth is not adjustable, the grinding tool needs to be frequently replaced, and the processing cost is increased; and the motor is too big because the pressure that the processing produced is directly resisted to the in-process that promotes the pipe fitting, has shortened the life of motor.
Therefore, the device for forming the internal thread by using the hard alloy ball is provided, the air cylinder is replaced by a screw rod to push, the screw rod is used for controlling the displacement generated by pressing the ball, and the thread forming depth is controlled; the connection mode of the motor and the blank pipe is changed into synchronous belt transmission connection, so that the transmission load of the motor is reduced, and the service life of the motor is prolonged.
Description of the invention
The invention aims to provide a device for forming internal threads by using hard alloy balls, which replaces a cylinder with a screw rod and adds a transmission part at the output shaft end of a rotating motor so as to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a device for forming internal threads by using hard alloy balls comprises a thread forming pipe, a ball extruding assembly and a blank pipe moving assembly, wherein the blank pipe moving assembly is arranged in the thread forming pipe, the thread forming pipe comprises a hollow pipeline, two groups of notches are symmetrically arranged on the pipe wall of the hollow pipeline, one end of the hollow pipeline is fixedly provided with a first pressing ring and a second pressing ring respectively, and balls are arranged between the first pressing ring and the second pressing ring;
the ball extrusion assemblies are arranged into two groups, each ball extrusion assembly comprises a first motor, a transmission part is fixedly mounted at an output shaft end of each first motor, the transmission part is fixedly connected with a transmission screw rod, the screw rod is connected with shifting blocks away from the transmission part through threads, a lantern ring is arranged between the two groups of shifting blocks, the inner ring of the lantern ring is conical, and the inner ring of the lantern ring and the balls are arranged in a tangent mode;
the blank pipe moving assembly comprises a second motor, a transmission part and a guide pipe, the transmission part is fixedly connected to the output shaft end of the second motor, a push rod is fixedly installed on one side of the transmission part, the push rod is installed in the guide pipe in a sliding mode, and the guide pipe is fixedly installed in the hollow pipeline.
Preferably, the two ends of the hollow pipeline are fixedly provided with sealing plates, and a first through hole is formed in one group of the sealing plates.
Preferably, a second through hole is formed in the sealing plate, and one side of the first pressing ring is installed in the second through hole in a penetrating mode.
Preferably, one end of the conduit is installed in the first through hole in a penetrating manner, and the other end of the conduit is fixedly installed in the first pressing ring.
Preferably, a cover plate is fixedly mounted at one end of the hollow pipeline, and the cover plate is fixedly connected with one side of the first pressing ring.
Preferably, the transmission part comprises a first belt wheel and a second belt wheel, the first belt wheel and the second belt wheel are in transmission connection through a transmission belt, the first belt wheel is fixedly installed at one end of the transmission screw rod, and the second belt wheel is fixedly installed at the output shaft end of the first motor.
Preferably, a connecting rod is fixedly mounted on one side of the shifting block, a fixing ring is arranged at one end of the connecting rod, a clamping groove is formed in the inner ring of the fixing ring, and the lantern ring is fixedly mounted in the clamping groove.
Preferably, the two ends of the hollow pipeline are symmetrically provided with vertical plates, and the screw rod is rotatably arranged between the two groups of vertical plates.
Preferably, the connecting rod is slidably mounted in the notch, and the connecting rod and the notch are in clearance fit.
Compared with the prior art, the invention has the beneficial effects that:
1. the air cylinder is replaced by a screw rod for pushing, the screw rod is used for controlling the displacement generated by the pressing of the ball bearings, and the thread forming depth is controlled;
2. the connection mode of the motor and the blank pipe is changed into synchronous belt transmission connection, so that the transmission load of the motor is reduced, and the service life of the motor is prolonged.
Drawings
FIG. 1 is a schematic perspective view of an apparatus for forming internal threads using cemented carbide balls according to the present invention;
FIG. 2 is a schematic sectional view of an internal thread forming device using cemented carbide balls according to the present invention;
FIG. 3 is a schematic structural diagram of a transmission front view of an apparatus for forming internal threads by using hard alloy balls according to the present invention;
FIG. 4 is a schematic view of a ball extruding assembly of an apparatus for forming internal threads using cemented carbide balls according to the present invention;
fig. 5 is an enlarged schematic structural view of a portion a in fig. 2 of an apparatus for forming internal threads by using cemented carbide balls according to the present invention.
In the figure: 1. forming a pipe by screw thread; 101. a hollow pipe; 102. a notch; 103. a first clamping ring; 104. a second clamping ring; 105. a ball bearing; 106. closing the plate; 107. a first through hole; 108. a second through hole; 109. a cover plate; 2. a ball extrusion assembly; 201. a first motor; 202. a transmission section; 2021. a first pulley; 2022. a second pulley; 2023. a transmission belt; 203. a screw rod; 204. shifting blocks; 205. a collar; 206. a connecting rod; 207. a fixing ring; 208. a card slot; 209. a vertical plate; 3. a parison tube movement assembly; 301. a second motor; 302. a conduit; 303. a push rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the specification.
Referring to fig. 1-5, the present invention provides a technical solution: a device for forming internal threads by using hard alloy balls comprises a thread forming pipe 1, a ball extrusion assembly 2 and a blank pipe moving assembly 3, wherein the blank pipe moving assembly 3 is arranged in the thread forming pipe 1, the thread forming pipe 1 comprises a hollow pipeline 101, two groups of notches 102 are symmetrically arranged on the pipe wall of the hollow pipeline 101, a first pressing ring 103 and a second pressing ring 104 are respectively and fixedly arranged at one end of the hollow pipeline 101, and balls 105 are arranged between the first pressing ring 103 and the second pressing ring 104, in the embodiment, the balls 105 are hard alloy copper balls, so that the wear resistance is improved; both ends of the hollow pipeline 101 are fixedly provided with sealing plates 106, wherein a set of sealing plates 106 are internally provided with first through holes 107, the sealing plates 106 are internally provided with second through holes 108, one side of the first pressing ring 103 is installed in the second through holes 108 in a penetrating manner, one end of the hollow pipeline 101 is fixedly provided with a cover plate 109, and the cover plate 109 is fixedly connected with one side of the first pressing ring 103.
The ball extruding assemblies 2 are arranged into two groups, the ball extruding assemblies 2 comprise a first motor 201, the output shaft end of the first motor 201 is fixedly provided with a transmission part 202, the transmission part 202 is fixedly connected with a transmission screw rod 203, the screw rod 203 is connected with a shifting block 204 far away from the transmission part 202 through threads, one side of the shifting block 204 is fixedly provided with a connecting rod 206, the connecting rod 206 is arranged in the notch 102 in a sliding way, and the connecting rod 206 is in clearance fit with the notch 102, one end of the connecting rod 206 is provided with a fixing ring 207, the inner ring of the fixing ring 207 is provided with a clamping groove 208, the lantern ring 205 is fixedly arranged in the clamping groove 208, vertical plates 209 are symmetrically arranged at two ends of the hollow pipeline 101, the screw rod 203 is rotatably arranged between two groups of vertical plates 209, a lantern ring 205 is arranged between two groups of shifting blocks 204, the inner ring of the collar 205 is arranged in a conical shape and the inner ring of the collar 205 is arranged tangentially to the balls 105.
The transmission portion 202 includes a first belt pulley 2021 and a second belt pulley 2022, the first belt pulley 2021 and the second belt pulley 2022 are in transmission connection through a transmission belt 2023, the first belt pulley 2021 is fixedly mounted at one end of the transmission screw 203, and the second belt pulley 2022 is fixedly mounted at an output shaft end of the first motor 201.
The blank pipe moving assembly 3 comprises a second motor 301, a transmission part 202 and a guide pipe 302, the transmission part 202 is fixedly connected to the output shaft end of the second motor 301, a push rod 303 is fixedly installed on one side of the transmission part 202, the push rod 303 is slidably installed in the guide pipe 302, the guide pipe 302 is fixedly installed in the hollow pipeline 101, one end of the guide pipe 302 is installed in the first through hole 107 in a penetrating mode, and the other end of the guide pipe 302 is fixedly installed in the first pressing ring 103.
The working principle is as follows: the air cylinder is replaced by a screw rod 203 for pushing, when the screw thread forming machine is used, the first motor 201 is started, the transmission part 202 drives the screw rod 203 to rotate, and the connecting rod 206 is slidably arranged in the notch 102, so that the screw rod 203 can be used for controlling the displacement generated by the pressing of the ball 105, and the thread forming depth can be controlled;
a group of transmission parts 202 are added to the connection structure of the second motor 301 and the blank pipe, the second motor 301 is utilized to drive the first belt wheel 2021 and the second belt wheel 2022 to be transmitted to the push rod 303 to move, the transmission load of the motor is reduced, and the service life of the motor is prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an utilize carbide ball to carry out internal thread forming device, includes that screw thread forming tube (1), ball extrusion subassembly (2) and base pipe move subassembly (3), its characterized in that: the parison tube moving assembly (3) is arranged in the thread forming tube (1), the thread forming tube (1) comprises a hollow pipeline (101), two groups of notches (102) are symmetrically arranged on the wall of the hollow pipeline (101), one end of the hollow pipeline (101) is fixedly provided with a first pressing ring (103) and a second pressing ring (104) respectively, and a ball (105) is arranged between the first pressing ring (103) and the second pressing ring (104);
the ball extrusion assemblies (2) are arranged into two groups, each ball extrusion assembly (2) comprises a first motor (201), a transmission part (202) is fixedly mounted at the output shaft end of each first motor (201), the transmission part (202) is fixedly connected with a transmission screw rod (203), the screw rod (203) far away from the transmission part (202) is in threaded connection with a shifting block (204), a lantern ring (205) is arranged between the two groups of shifting blocks (204), the inner ring of the lantern ring (205) is arranged into a conical shape, and the inner ring of the lantern ring (205) and the balls (105) are arranged in a tangent mode;
the blank pipe moving assembly (3) comprises a second motor (301), a transmission part (202) and a guide pipe (302), the transmission part (202) is fixedly connected to the output shaft end of the second motor (301), a push rod (303) is fixedly installed on one side of the transmission part (202), the push rod (303) is installed in the guide pipe (302) in a sliding mode, and the guide pipe (302) is fixedly installed in the hollow pipeline (101).
2. The apparatus for forming an internal thread using a cemented carbide ball according to claim 1, wherein: both ends of the hollow pipeline (101) are fixedly provided with sealing plates (106), wherein a first through hole (107) is formed in one group of the sealing plates (106).
3. The apparatus for forming an internal thread using a cemented carbide ball according to claim 2, wherein: a second through hole (108) is formed in the sealing plate (106), and one side of the first pressing ring (103) penetrates through the second through hole (108).
4. The apparatus for forming an internal thread using a cemented carbide ball according to claim 1, wherein: one end of the guide pipe (302) is arranged in the first through hole (107) in a penetrating mode, and the other end of the guide pipe (302) is fixedly arranged in the first pressing ring (103).
5. The apparatus for forming an internal thread using a cemented carbide ball according to claim 1, wherein: a cover plate (109) is fixedly mounted at one end of the hollow pipeline (101), and the cover plate (109) is fixedly connected with one side of the first pressing ring (103).
6. The apparatus for forming an internal thread using a cemented carbide ball according to claim 1, wherein: the transmission part (202) comprises a first belt wheel (2021) and a second belt wheel (2022), the first belt wheel (2021) and the second belt wheel (2022) are in transmission connection through a transmission belt (2023), the first belt wheel (2021) is fixedly installed at one end of a transmission screw rod (203), and the second belt wheel (2022) is fixedly installed at the output shaft end of a first motor (201).
7. The apparatus for forming an internal thread using a cemented carbide ball according to claim 1, wherein: a connecting rod (206) is fixedly mounted on one side of the shifting block (204), a fixing ring (207) is arranged at one end of the connecting rod (206), a clamping groove (208) is formed in the inner ring of the fixing ring (207), and the sleeve ring (205) is fixedly mounted in the clamping groove (208).
8. The apparatus for forming an internal thread using a cemented carbide ball according to claim 7, wherein: vertical plates (209) are symmetrically arranged at two ends of the hollow pipeline, and the screw rod (203) is rotatably arranged between the two groups of vertical plates (209).
9. The apparatus for forming an internal thread using a cemented carbide ball according to claim 7, wherein: the connecting rod (206) is slidably mounted in the notch (102), and the connecting rod (206) is in clearance fit with the notch (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308981.1A CN111496009A (en) | 2020-04-19 | 2020-04-19 | Internal thread forming device by using hard alloy ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308981.1A CN111496009A (en) | 2020-04-19 | 2020-04-19 | Internal thread forming device by using hard alloy ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111496009A true CN111496009A (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010308981.1A Pending CN111496009A (en) | 2020-04-19 | 2020-04-19 | Internal thread forming device by using hard alloy ball |
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| Country | Link |
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| CN (1) | CN111496009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
-
2020
- 2020-04-19 CN CN202010308981.1A patent/CN111496009A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
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