A cold heading forming limiting rod and a forming method thereof

Abstract

The application discloses a cold upsetting forming limiting rod and a forming method thereof, which comprises a limiting rod body and a fixing bolt. In order to solve the problem that the bolt will move and rotate due to the loosening of the bolt, the bolt will rotate and deviate due to the shaking of the vehicle during driving, and the existing limiting rod cannot effectively limit the bolt. The rear end of the fixing bolt is provided with a fixing nut, one side of the limiting rod body is provided with a fixing plate, one end of the limiting rod body is provided with a fixing rod, the upper portion of the fixing rod is provided with a limiting block, the upper portion of the limiting block is provided with a mounting rod, sixteen limiting grooves are annularly arranged on the outer end of the limiting block, three limiting teeth are equidistantly arranged on the surface of the limiting groove, a fixing nut is arranged in the limiting groove, and the surface of the fixing nut is attached to the limiting tooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of limiting rod devices, in particular to a cold upsetting forming limiting rod and a forming method thereof. BACKGROUND

[0002] The development of new energy vehicles in China is recognized by the world. The battery replacement mode is a new energy vehicle fast power supply method, which has the advantages of fast power supply speed, high automation level, high integration degree, etc. and can greatly reduce the consumer's range anxiety. In the process of battery replacement, a limiting rod is needed to fix and limit the fixing bolt, thereby improving the stability of the fixing bolt during use.

[0003] Chinese patent publication No. CN104476445A, granted on April 1, 2015, discloses a bolt pressing device with a limiting rod, which comprises a base, a support rod, a locking nut, a clamping table, a compression spring and a pressing plate. The clamping table is installed on the base, and the base has a threaded hole. The support rod has an external thread, and the support rod is sequentially connected with the locking nut, the pressing plate, the compression spring and the threaded hole from top to bottom. The base further comprises a ring-shaped groove centered on the support rod, and the ring-shaped groove has a boss. The pressing plate is divided into a clamping area and a control area. The clamping area is fan-shaped and faces the clamping table. The control area has a plurality of limiting rods perpendicular thereto. The limiting rods are arranged along the circumference of the pressing plate, and the limiting rods have different heights. The limiting rods can be in contact with the boss. The limiting rods with different heights are in contact with the boss, thereby pressing workpieces with different heights. When adjusting the height of the pressing plate, only the pressing plate needs to be rotated, which is relatively simple to operate. The boss in contact with the limiting rod is arranged in the ring-shaped groove, leaving more space on the surface of the base.

[0004] The prior art in the above has the following defects: the bottom adhering method is used to limit the fixing bolt in the up-down direction, but the bolt loosening will not only move in height but also rotate. The shaking of the vehicle during driving will cause the rotation and deviation of the bolt, and the existing limiting rod cannot effectively limit it. Therefore, the cold upsetting forming limiting rod and the forming method thereof are proposed to solve the above problems. SUMMARY

[0005] The present application aims to provide a cold upsetting forming limiting rod and a forming method thereof to solve the problem that the bolt loosening will not only move in height but also rotate, and the shaking of the vehicle during driving will cause the rotation and deviation of the bolt, and the existing limiting rod cannot effectively limit it.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a cold heading forming limiting rod, comprising a limiting rod body and a fixing bolt, the rear end of the fixing bolt is provided with a fixing nut, one side of the limiting rod body is provided with a fixing plate, one end of the limiting rod body is provided with a fixing rod, the outer side of one end of the fixing rod is provided with an external thread, the upper side of the fixing rod is provided with a limiting block, the upper side of the limiting block is provided with a mounting rod, the outer end of the limiting block is annularly provided with eighteen limiting grooves, the surface of the limiting groove is equidistantly provided with three limiting teeth, the inside of the limiting groove is provided with a fixing nut, and the surface of the fixing nut is attached to the limiting tooth, one end of the mounting rod away from the limiting block is provided with a hexagonal head, the lower end of the fixing rod is provided with a twist cap limiting sleeve, the inside of the fixing rod, the twist cap limiting sleeve and the limiting block is provided with a rotating shaft groove, the inside of the rotating shaft groove is rotatably provided with a rotating shaft, the upper side of the rotating shaft is provided with a driving block, and the driving block and the rotating shaft are an integral structure, the upper side of the rotating shaft groove is annularly provided with eighteen limiting plate grooves, the inside of the limiting plate groove is slidably provided with a limiting plate, the inside of the lower end of the twist cap limiting sleeve is provided with a twist cap, and the lower side of the twist cap is provided with a twist plate.

[0007] Preferably, one end of the fixing rod passes through the fixing plate, and the fixing rod is threadedly connected with the fixing plate through the external thread, the limiting block is divided into two parts, and the two parts are clamped and fixedly connected.

[0008] Preferably, the twist plate and the twist cap are an integral structure, the twist plate is a rectangular structure, the twist cap is clamped and connected with the rotating shaft, the driving block is located in the inside of the limiting block, and the driving block is rotatably connected with the limiting block.

[0009] Preferably, the limiting groove is an arc-shaped groove, the rotating shaft groove is located below the limiting plate groove, the upper side of the limiting plate groove is provided with a sliding groove, the upper end of the limiting plate is provided with a sliding block, the lower end surface of the limiting plate is provided with a strip-shaped tooth, the upper end surface of the driving block is provided with a spiral tooth, and the spiral tooth is meshingly connected with the strip-shaped tooth.

[0010] Preferably, the outside of the rotating shaft groove is annularly provided with four spring sheet grooves, the outside of the rotating shaft is annularly provided with four spring sheets, and the spring sheets correspond to the spring sheet grooves.

[0011] A cold heading forming limiting rod and a forming method thereof, comprising the following steps:

[0012] Step one: through the automatic feeding system of the six-station high-speed forming machine, the raw material with the required volume of the product is sent into the six-station high-speed forming machine of the six-station high-speed forming machine, the pre-shaping of the two end surfaces of the raw material sent into the first mold inlet is completed by the first punch of the six-station high-speed forming machine, burrs and flash are eliminated, the first station forming is completed, and a blank is obtained;

[0013] Step two: the blank is sent to the next station by the second die of the six-station high-speed forming machine, the outer thread blank and the twist cap limiting sleeve are formed, and semi-finished product one is obtained;

[0014] Step three: the semi-finished product one is sent to the next station; the semi-finished product one is extruded and shaped by the third die of the six-station high-speed forming machine, the mounting rod and the hexagonal head are formed, and semi-finished product two is obtained;

[0015] Step four: the semi-finished product two is sent to the next station; the semi-finished product two forms the required volume of the limiting groove and the limiting tooth by the fourth die of the six-station high-speed forming machine, and semi-finished product three is obtained;

[0016] Step five: the semi-finished product three is sent to the next station; the limiting groove and the limiting tooth are pre-formed in the fifth die of the six-station high-speed forming machine, and semi-finished product four is obtained;

[0017] Step six: the semi-finished product four is sent into the sixth die for forming, so that the limiting groove and the limiting tooth are processed and formed, and semi-finished product five is obtained;

[0018] Step seven: the semi-finished product five is cut from the horizontal plane at the lower end of the limiting plate groove design and the horizontal plane at the middle position of the spring piece groove by a cutting machine, the cutting surface is polished by a polisher, and the rotating shaft groove, the spring piece groove, the limiting plate groove and the sliding groove are cut by a milling machine, and the formed material is obtained;

[0019] Step eight: the formed material is processed by a high-speed threading machine to form the external thread of the movement fixing rod;

[0020] Step nine: the strength of the product is improved by heat treatment, the quenching temperature is ℃, the quenching time is minutes, the tempering temperature is ℃, and the tempering time is minutes;

[0021] Step ten: the spring piece is installed to the outside of the rotating shaft, the rotating shaft and the driving block are installed into the rotating shaft groove, the spring piece is placed in the spring piece groove, the twist cap is connected with the rotating shaft, a limiting plate is arranged on the driving block, the limiting block is connected with the mounting rod, and the product is packaged and stored.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1、The present application replaces expensive composite machining equipment production by the combination process of cold heading, threading cutting and milling, greatly improves the material utilization rate and production efficiency, and reduces the production cost.

[0024] 2、The eighteen limiting grooves in the application can limit the position of the fixing bolt, so that it cannot displace towards the center of the limiting groove, thereby realizing the locking of the position. Through the fitting of the limiting teeth and the fixing bolt, the friction between the fixing bolt and the limiting rod can be increased, thereby effectively preventing the rotation thereof. Meanwhile, the slidingly arranged limiting plate extends to the rear of the fixing nut, can be clamped between the fixing nut and the mounting plate, and improves the friction between the fixing nut and the mounting plate. The limiting plate can improve the friction between the fixing nut and the mounting plate, thereby preventing the displacement of the fixing bolt. Through the meshing connection of the driving block and the limiting plate, the limiting plate is rapidly driven to slide and be limited in the limiting plate groove, thereby the rapid locking of the position can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the connection relationship of the limiting rod body, the fixing plate and the fixing bolt in the application;

[0026] Figure 2 It is a perspective view of the application;

[0027] Figure 3 It is a structural schematic view of the application;

[0028] Figure 4 It is a side view of the application;

[0029] Figure 5 It is a B area local enlarged view of the application; Figure 3

[0030] Figure 6 It is an A-A direction sectional view of the application.

[0031] In the figure: 1, limiting rod body; 2, fixing plate; 3, fixing bolt; 4, fixing nut; 5, fixing rod; 6, limiting block; 7, mounting rod; 8, hexagonal head; 9, limiting groove; 10, limiting tooth; 11, external thread; 12, twist cap limiting sleeve; 13, twist cap; 14, twist plate; 15, rotating shaft; 16, driving block; 17, limiting plate; 18, limiting plate groove; 19, sliding groove; 20, spring sheet groove; 21, sliding block; 22, strip-shaped tooth; 23, helical tooth; 24, spring sheet. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0033] Please refer to Figures 1-6 ​The application provides a cold upsetting forming limiting rod, which comprises a limiting rod body 1 and a fixing bolt 3, the rear end of the fixing bolt 3 is provided with a fixing nut 4, one side of the limiting rod body 1 is provided with a fixing plate 2, one end of the limiting rod body 1 is provided with a fixing rod 5, the outer side of one end of the fixing rod 5 is provided with external threads 11, the upper side of the fixing rod 5 is provided with a limiting block 6, the upper side of the limiting block 6 is provided with a mounting rod 7, the outer end of the limiting block 6 is annularly provided with eighteen limiting grooves 9, the surface of the limiting groove 9 is equidistantly provided with three limiting teeth 10, the inside of the limiting groove 9 is provided with the fixing nut 4, and the surface of the fixing nut 4 is attached to the limiting tooth 10, one end of the mounting rod 7 away from the limiting block 6 is provided with a hexagonal head 8, the lower end of the fixing rod 5 is provided with a twist cap limiting sleeve 12, the inside of the fixing rod 5, the twist cap limiting sleeve 12 and the limiting block 6 is provided with a rotating shaft groove, the inside of the rotating shaft groove is rotatably provided with a rotating shaft 15, the upper side of the rotating shaft 15 is provided with a driving block 16, and the driving block 16 and the rotating shaft 15 are an integral structure, the upper side of the rotating shaft groove is annularly provided with eighteen limiting plate grooves 18, the inside of the limiting plate groove 18 is slidably provided with a limiting plate 17, the inside of the lower end of the twist cap limiting sleeve 12 is provided with a twist cap 13, and the lower side of the twist cap 13 is provided with a twist plate 14.

[0034] Please refer to Figure 2 One end of the fixing rod 5 penetrates through the fixing plate 2, and the fixing rod 5 is threadedly connected with the fixing plate 2 through the external threads 11.

[0035] Please refer to Figures 2-6 The twist plate 14 and the twist cap 13 are an integral structure, the twist plate 14 is a rectangular structure, the twist cap 13 is clampedly connected with the rotating shaft 15, the driving block 16 is located in the inside of the limiting block 6 and is rotatably connected with the limiting block 6, the limiting groove 9 is an arc-shaped groove, the rotating shaft groove is located below the limiting plate groove 18, the upper side of the limiting plate groove 18 is provided with a sliding groove 19, the upper end of the limiting plate 17 is provided with a sliding block 21, the lower end surface of the limiting plate 17 is provided with a strip-shaped tooth 22, the upper end surface of the driving block 16 is provided with a helical tooth 23, the helical tooth 23 is in meshing connection with the strip-shaped tooth 22, the outside of the rotating shaft groove is annularly provided with four spring sheet grooves 20, the outside of the rotating shaft 15 is annularly provided with four spring sheets 24, and the spring sheets 24 correspond to the spring sheet grooves 20.

[0036] The application provides a cold upsetting forming limiting rod and a forming method thereof.

[0037] Step one: through the automatic feeding system of six power high-speed forming machine, select the required volume of raw materials into the six power high-speed forming machine of six power high-speed forming machine, through the first die of six power high-speed forming machine, the two end faces of the raw material sent into the first die inlet are pre-shaped, burrs and flash are eliminated, the first station forming is completed, and the blank is obtained;

[0038] Step two: the blank is ejected to the next station, the second die of the six power high-speed forming machine is used to complete the forming of the outer thread 11 blank and the twist cap limiting sleeve 12, and the semi-finished product one is obtained;

[0039] Step three: the semi-finished product one is ejected to the next station; the third die of the six power high-speed forming machine is used to extrude and shape the semi-finished product one to form the mounting rod 7 and the hexagonal head 8, and the semi-finished product two is obtained;

[0040] Step four: the semi-finished product two is ejected to the next station; the fourth die of the six power high-speed forming machine is used to form the required volume of material for the limiting groove 9 and the limiting tooth 10 of the semi-finished product two, and the semi-finished product three is obtained;

[0041] Step five: the semi-finished product three is ejected to the next station; the fifth die of the six power high-speed forming machine is used to complete the pre-forming of the limiting groove 9 and the limiting tooth 10 in the fifth die, and the semi-finished product four is obtained;

[0042] Step six: the semi-finished product four is sent into the sixth die to form the limiting groove 9 and the limiting tooth 10, and the semi-finished product five is obtained;

[0043] Step seven: the semi-finished product five is cut from the horizontal plane at the lower end of the limiting plate groove 18 and the horizontal plane at the middle position of the spring piece groove 20 by a cutting machine, the cutting surface is polished by a polisher, and the rotating shaft groove, spring piece groove 20, limiting plate groove 18 and sliding groove 19 are cut by a milling machine, and the formed material is obtained;

[0044] Step eight: the formed material is processed by a high-speed threading machine to form the external thread 11 of the movement fixing rod 5;

[0045] Step nine: the strength of the product is improved by heat treatment, the quenching temperature is 860℃, the quenching time is 85 minutes; the tempering temperature is 530℃, and the tempering time is 130 minutes;

[0046] Step ten: through zinc aluminum coating, the spring piece 24 is installed to the outside of the rotating shaft 15, the rotating shaft 15 and the driving block 16 are installed into the rotating shaft groove, the spring piece 24 is placed in the spring piece groove 20, the twist cap 13 is connected with the rotating shaft 15, 16 limiting plates 17 are arranged on the driving block 16, the limiting block 6 is connected with the mounting rod 7, and the product is packaged and stored.

[0047] Working principle: in use, first through the external thread 11 connecting the limiting rod body 1 and the fixed plate 2, at this time the limiting rod body 1 is moved to the position where the fixing bolt 3 is needed to be installed, rotating the twist plate 14, the twist plate 14 drives the twist cap 13 to rotate, the twist cap 13 drives the rotating shaft 15 and the driving block 16 to rotate through the clamping, at this time the driving block 16 drives the limiting plate 17 provided with the strip tooth 22 to slide to the outside of the limiting plate groove 18 through the spiral tooth 23, 18 limiting plates 17 extend out at the same time, at this time the installation of the fixing bolt 3 is carried out, until the lower end of the fixing nut 4 is attached to the limiting plate 17, and the outer surface is attached to the limiting tooth 10, which can increase the friction between the fixing bolt and the limiting rod, so as to effectively prevent it from rotating, the limiting plate 17 can improve the friction between the fixing nut and the mounting plate, so as to prevent the displacement of the fixing bolt.

[0048] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein. No feature of the claims is to be construed as limiting the claim to the exact construction indicated thereof.

Claims

1. A cold heading forming limit rod, comprising a limit rod body (1) and a fixing bolt (3), the rear end of the fixing bolt (3) is provided with a fixing nut (4), characterized in that: The side of the limiting rod body (1) is provided with a fixed plate (2), one end of the limiting rod body (1) is provided with a fixed rod (5), the outer side of one end of the fixed rod (5) is provided with an external thread (11), the upper side of the fixed rod (5) is provided with a limiting block (6), the upper side of the limiting block (6) is provided with a mounting rod (7), the outer end of the limiting block (6) is annularly provided with eighteen limiting grooves (9), the surface of the limiting groove (9) is equidistantly provided with three limiting teeth (10), the inside of the limiting groove (9) is provided with a fixed nut (4), and the surface of the fixed nut (4) is attached to the limiting tooth (10), one end of the mounting rod (7) away from the limiting block (6) is provided with a hexagonal head (8), the lower end of the fixed rod (5) is provided with a twist cap limiting sleeve (12), the inside of the fixed rod (5), the twist cap limiting sleeve (12) and the limiting block (6) is provided with a rotating shaft groove, the inside of the rotating shaft groove is rotatably provided with a rotating shaft (15), the upper side of the rotating shaft (15) is provided with a driving block (16), and the driving block (16) and the rotating shaft (15) are an integral structure, the upper side of the rotating shaft groove is annularly provided with eighteen limiting plate grooves (18), the inside of the limiting plate groove (18) is slidably provided with a limiting plate (17), the inside of the lower end of the twist cap limiting sleeve (12) is provided with a twist cap (13), the lower side of the twist cap (13) is provided with a twist plate (14); One end of the fixed rod (5) penetrates through the fixed plate (2), and the fixed rod (5) is threadedly connected with the fixed plate (2) through the external thread (11), the limiting block (6) is divided into two parts, and the two parts are clamped and fixedly connected; The twist plate (14) and the twist cap (13) are an integral structure, the twist plate (14) is a rectangular structure, the twist cap (13) is clamped and connected with the rotating shaft (15), the driving block (16) is located in the inside of the limiting block (6), and the driving block (16) is rotatably connected with the limiting block (6); The limiting groove (9) is an arc-shaped groove, the rotating shaft groove is located below the limiting plate groove (18), the upper side of the limiting plate groove (18) is provided with a sliding groove (19), the upper end of the limiting plate (17) is provided with a sliding block (21), and the sliding block (21) is slidably connected with the sliding groove (19), the lower end surface of the limiting plate (17) is provided with a strip-shaped tooth (22), the upper end surface of the driving block (16) is provided with a helical tooth (23), and the helical tooth (23) is meshedly connected with the strip-shaped tooth (22); The outside of the rotating shaft groove is annularly provided with four spring sheet grooves (20), the outside of the rotating shaft (15) is annularly provided with four spring sheets (24), and the spring sheets (24) correspond to the spring sheet grooves (20); The strength of the product is improved through heat treatment, the quenching temperature of the heat treatment is 860℃, the quenching time is 85 minutes, the tempering temperature is 530℃, and the tempering time is 130 minutes.

2. A method of forming a limit rod for cold heading, according to claim 1, wherein The method comprises the following steps: Step one: through the automatic feeding system of six-station high-speed forming machine, select the required volume of raw materials into the six-station high-speed forming machine of six-station high-speed forming machine, through the first die of six-station high-speed forming machine, the two end faces of the raw material sent into the first die inlet are pre-shaped, burrs and flash are eliminated, the first station is formed, and the blank is obtained; Step two: the blank is ejected to the next station, the second die of the six-station high-speed forming machine is used to complete the forming of the outer thread (11) blank and the twist cap limiting sleeve (12), and the semi-finished product one is obtained; Step three: the semi-finished product one is ejected to the next station; through the third die of the six-station high-speed forming machine, the semi-finished product one is extruded and shaped to form the mounting rod (7) and the hexagonal head (8), and the semi-finished product two is obtained; Step four: the semi-finished product two is ejected to the next station; through the fourth die of the six-station high-speed forming machine, the semi-finished product two forms the required volume of material for limiting groove (9) and limiting tooth (10), and the semi-finished product three is obtained; Step five: the semi-finished product three is ejected to the next station; through the fifth die of the six-station high-speed forming machine, the limiting groove (9) and the limiting tooth (10) are pre-formed in the fifth die, and the semi-finished product four is obtained; Step six: the semi-finished product four is sent into the sixth die to form the limiting groove (9) and the limiting tooth (10), and the semi-finished product five is obtained; Step seven: the semi-finished product five is cut from the lower end horizontal surface designed by the limiting plate groove (18) and the horizontal surface at the middle position of the spring piece groove (20) by using a cutting machine, the cutting surface is polished by using a polisher, and the rotating shaft groove, spring piece groove (20), limiting plate groove (18) and sliding groove (19) are cut by using a milling machine, and the formed material is obtained; Step eight: the formed material is processed by using a high-speed threading machine to form the outer thread (11) of the movement fixing rod (5); Step nine: the strength of the product is improved by heat treatment, the quenching temperature is 860℃, the quenching time is 85 minutes; the tempering temperature is 530℃, and the tempering time is 130 minutes; Step ten: through zinc-aluminum coating, the spring piece (24) is installed to the outside of the rotating shaft (15), the rotating shaft (15) and the driving block (16) are installed into the rotating shaft groove, the spring piece (24) is placed in the spring piece groove (20), the twist cap (13) is connected with the rotating shaft (15), 16 limiting plates (17) are arranged on the driving block (16), the limiting block (6) is connected with the mounting rod (7), and the product is packaged and stored.

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