CN221311947U - Ball sliding tube ball groove forming die - Google Patents

Abstract

The application relates to the field of pipe fitting machining, and provides a ball groove forming die for a ball sliding pipe, which comprises an upper die holder, a lower die holder, a forming die and an ejection piece; the upper die holder is provided with an upper die fixing hole; the lower die holder is provided with a lower die fixing hole for connecting parts; the forming die is connected with the upper die holder through the upper die fixing hole; the forming die is divided into three sections, the upper section is a mounting section, the middle section is a three-section spherical groove-shaped taper section with taper, the lower section is a guide section, the mounting section is connected with the upper die fixing hole, and the guide section is spliced with the part; and when the upper die seat moves towards the lower die seat to perform cold pressing, the taper section is inserted into the part, so that the part is subjected to cold pressing molding. The application has the effects of stabilizing the ball groove after cold pressing and improving plastic deformation.

Description

Ball sliding tube ball groove forming die

Technical Field

The application relates to the field of pipe fitting machining, in particular to a ball groove forming die for a ball sliding pipe.

Background

Due to the development of technology and the progress of the era, the performance requirements of human beings on vehicles are also higher and higher, and the low rotation speed, high torque and high power of an engine become targets for pursuing people. However, the greater the engine horsepower, the more rapid the acceleration and the more pronounced the tendency of the vehicle to twist, which is detrimental to the handling of the vehicle, and therefore vehicle steering systems satisfying high torque have been designed on the steering system.

The steering system is characterized in that the steering system comprises a ball sliding shaft and a pipe, the size requirement of a ball groove in the ball sliding shaft and the requirement of the ball groove in the ball sliding shaft are in symmetrical concave and convex forms, the ball groove in the pipe is more difficult to realize because the ball groove is formed in an inner hole, the tubular part is characterized in that materials are easier to flow at the beginning of extrusion, the extrusion is more difficult along with the deep penetration of a male die, the plastic deformation is smaller, and the consistency of the cold-pressed ball groove is poor.

Disclosure of Invention

In order to solve the problems, the application provides a ball groove forming die of a ball sliding tube.

The application provides a ball groove forming die for a ball sliding pipe, which adopts the following technical scheme:

A ball groove forming die of a ball sliding tube comprises an upper die holder, a lower die holder, a forming die and an ejection piece; the upper die holder is provided with an upper die fixing hole; the lower die holder is provided with a lower die fixing hole for connecting parts; the forming die is connected with the upper die holder through the upper die fixing hole; the forming die is divided into three sections, the upper section is a mounting section, the middle section is a three-section spherical groove-shaped taper section with taper, the lower section is a guide section, the mounting section is connected with the upper die fixing hole, and the guide section is spliced with the part; and when the upper die seat moves towards the lower die seat to perform cold pressing, the taper section is inserted into the part, so that the part is subjected to cold pressing molding.

Through adopting above-mentioned technical scheme, under the drive of hydraulic press, the upper die base moves and carries out the cold-pressing down the time of the die holder down, and the upper die base can drive the moulded die and move down the die holder, and in the course of moving, the installation section is along part inside removal until in the tapering section inserts the part, utilizes the tapering of three section ball slot forms, extrudees the part inner wall to three section ball slot forms are convenient for the part flows in the extrusion process, with this whole cold extrusion process of accomplishing, and accomplish cold extrusion back, three circular arc ball slot top-down's size uniformity is better, makes the part inner wall cold-press molding.

Optionally, the upper die holder and the lower die holder are provided with limiting pieces.

By adopting the technical scheme, when the upper die holder and the lower die holder are used for compressing the forming die and the parts, the stress is easy to be uneven, so that the upper die holder and the lower die holder are fixed in position by the limiting piece, and the position deviation is avoided.

Optionally, the limiting piece comprises two limiting rods; two limiting holes are formed in the upper die base and the lower die base, and two ends of the limiting rod are respectively inserted into the limiting holes of the upper die base and the lower die base.

Through adopting above-mentioned technical scheme, spacing stick and the spacing hole clearance fit of upper die base and die holder, the size is mutual matched to the axiality of upper and lower mould has further been guaranteed to upper die base and die holder can not produce the displacement because of the atress when the extrusion, and the locating action of moulded die has been played from the certain degree to spacing stick.

Optionally, the lower die holder is further provided with a lower ejector rod; the lower ejector rod is inserted into the lower die fixing hole.

Through the technical scheme, after the part is cold-pressed and molded, the lower ejector rod can be used for penetrating through the lower die holder fixing hole and ejecting the part out of the lower die holder fixing hole, so that the effect of conveniently recycling the cold-pressed part is achieved.

Optionally, an adaptation groove matched with the taper section is further formed in the inner wall of the lower die fixing hole.

By adopting the technical scheme, the adapting groove matched with the taper section is formed in the inner wall of the lower die fixing hole, so that the situation that parts are difficult to extrude due to uneven stress in the extrusion process is avoided.

Optionally, a reset part is arranged on the inner wall of the lower die fixing hole; when the part is positioned in the lower die fixing hole, the reset part is abutted with the part.

Through adopting above-mentioned technical scheme, after the cold pressing, go up the module and break away from in the moulded die follow part, reset portion available elasticity lifts up the part, lifts up in the fixed orifices of follow lower mould to the part is retrieved to be convenient for.

Optionally, a clamping part is further arranged at the limiting rod; the clamping part is in sliding connection with the limiting rod and is abutted with the part.

Through adopting above-mentioned technical scheme, the clamping rod supports limit rod and part surface tightly for the part surface is supported, stabilizes the part, avoids the part to take place the skew in cold pressing process.

Optionally, the joint portion is equipped with both ends, and both ends are semicircle ring, and one end with the surface of spacing stick agrees with, the other end agrees with the surface of part.

Through adopting above-mentioned technical scheme, when the part takes place the skew at cold pressing in-process, the power of atress skew can be passed to spacing stick through joint portion to usable spacing stick supports tight part, in order to avoid the part to take place the skew.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When the upper die holder moves to the lower die holder and performs cold pressing under the driving of the oil press, the upper die holder drives the forming die to move to the lower die holder, in the moving process, the mounting section moves along the inside of the part until the taper section is inserted into the part, the inner wall of the part is extruded by utilizing the taper of the three-section spherical groove shape, and the three-section spherical groove shape is convenient for the part to flow in the extrusion process, so that the whole cold extrusion process is completed, and after the cold extrusion is completed, the dimensional consistency of the three circular arc spherical grooves from top to bottom is better, so that the inner wall of the part is formed by cold pressing;

2. The limiting rod is in clearance fit with the limiting holes of the upper die holder and the lower die holder, and the sizes of the limiting rod and the limiting holes of the upper die holder and the lower die holder are matched with each other, so that the coaxiality of the upper die and the lower die is guaranteed, the upper die holder and the lower die holder cannot displace due to stress during extrusion, and the limiting rod plays a role in positioning the forming die to a certain extent;

3. After cold pressing, the upper die set and the forming die are separated from the part, and the reset part can lift the part up by utilizing elasticity and lift the part from the fixing hole of the lower die so as to be convenient for recovering the part;

4. When the part is offset in the cold pressing process, the offset force can be transmitted to the limiting rod through the clamping part, so that the part can be tightly abutted by the limiting rod, and the offset of the part is avoided.

Drawings

FIG. 1 is a schematic view of a first explosive structure of a mold according to an embodiment of the present application;

FIG. 2 is a schematic view of a second explosive structure of a mold in some embodiments of the application;

FIG. 3 is a schematic cross-sectional view of a lower die holder according to some embodiments of the application;

FIG. 4 is a schematic cross-sectional view of a lower die holder according to some embodiments of the application;

FIG. 5 is a schematic perspective view of a limiting member and a part according to some embodiments of the present application;

The marks in the drawings are: 1. the device comprises an upper die holder, 11, an upper die fixing hole, 2, a lower die holder, 21, a lower die fixing hole, 22, a lower ejector rod, 23, an adaptation groove, 24, a reset part, 3, a forming die, 31, a mounting section, 32, a taper section, 33, a guide section, 4, an ejection piece, 5, a limiting piece, 51, a limiting rod, 52, a clamping part, 6, a limiting hole, 7 and a part.

Detailed Description

Other advantages and effects of the present application will be readily apparent to those skilled in the art from the following detailed description of the embodiments of the application. The application may be practiced or carried out in other embodiments and with various details, and various modifications and alterations may be made to the details of the application from various points of view and applications without departing from the spirit of the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

The embodiments of the present application will be described in detail below with reference to the attached drawings so that those skilled in the art to which the present application pertains can easily implement the present application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

In the context of the present description, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," 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 present application. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples, as well as features of various embodiments or examples, presented herein may be combined and combined by those skilled in the art without conflict.

Furthermore, the terms "first," "second," and the like, are used merely for purposes of referring to objects, and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the context of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" with other elements interposed therebetween. In addition, when a certain component is said to be "included" in a certain device, unless otherwise stated, other components are not excluded, but it means that other components may be included.

The present application will be described in further detail with reference to fig. 1 to 5.

The embodiment of the application discloses a ball groove forming die for a ball sliding tube.

The ball sliding tube ball groove forming die 3 is mainly used for processing a tubular part 7, and is shown by referring to FIG. 1, and comprises an upper die holder 1, a lower die holder 2, a forming die 3 and an ejection piece 4; the upper die holder 1 is provided with an upper die fixing hole 11, the forming die 3 is connected with the upper die holder 1 through the upper die fixing hole 11, the upper die holder 1 mainly aims at fixing the forming die 3 on the upper die fixing hole 11, the upper die fixing hole 11 is processed according to the mode of the forming die 3, the hole shape is in the mode of a ball groove, the number of the ball grooves is three, and the forming die 3 and the upper die holder 1 are in interference fit.

One end of the upper die holder 1, which is far away from the lower die holder 2, is arranged on an upper bottom plate of the oil press, can be fixed on the upper bottom plate by utilizing bolts, and is simultaneously pressed on the upper bottom plate by matching with a blank holder, so that the upper die holder 1 is prevented from being displaced due to huge pressure during working, and an upper die fixing hole 11 is machined and is matched with an upper ejector rod.

The lower die holder 2 is provided with a lower die fixing hole 21 for connecting the part 7, the lower die holder 2 has the main function of loading the part 7 into the lower die holder, the structure of the die is the same as the circular structure of the outer surface of the part 7, the part 7 can be stably inserted into the lower die fixing hole 21, one end, far away from the upper die set, of the lower die holder 2 is arranged in a lower die cylinder of an oil press, and meanwhile, the lower die cylinder is tightly pressed by a blank holder in a matched manner so as to prevent the displacement caused by huge pressure during working.

The forming die 3 is installed in the upper die fixing hole 11, and is matched with the upper die fixing hole 11 in an interference fit mode, and is pressed in the upper die holder 1 to ensure coaxiality of the forming die 3 and the upper die holder 1, the forming die 3 is divided into three sections, the upper section is an installation section 31, the installation section 31 is used for being connected with the upper die fixing hole 11, the middle section is a taper section 32, the taper section 32 is in a three-section spherical groove shape with taper, and the taper of the taper section 32 is large and small in a lower direction, so that when the part 7 is cold-pressed, the three-section spherical groove can be pressed on the inner wall of the part 7, the lower section is a guide section 33 which is cylindrical, the guide section 33 is spliced with the part 7, and the main effect of the forming die is that the die can smoothly enter an inner hole of the part 7, and coaxiality of the die and the part 7 is ensured.

Specifically, the tubular part 7 is characterized in that the material flows easily at the beginning of cold extrusion, the extrusion becomes more difficult along with the deep extrusion of the die, and plastic deformation becomes smaller, so that under the driving of an oil press, the upper die holder 1 moves towards the lower die holder 2 and performs cold pressing, the upper die holder 1 drives the forming die 3 to move towards the lower die holder 2, in the moving process, the mounting section 31 moves along the inside of the part 7 until the taper section 32 is inserted into the part 7, the inner wall of the part 7 is extruded by utilizing the taper of the three-section spherical grooves, the three-section spherical grooves facilitate the flow of the part 7 in the extrusion process, the whole cold extrusion process is completed, the dimensional consistency of the three circular arc spherical grooves from top to bottom is better after the cold pressing of the inner wall of the part 7 is completed, then the forming die 3 is taken out, the part 7 is subjected to heat treatment, the fluidity of the part material is strong due to the cold pressing performed by utilizing the taper section of the three-section spherical grooves, the stress of the part 7 is released after the heat treatment, the plastic recovery of the part 7 is stable, and the internal spherical grooves are molded completely.

Further, referring to fig. 2, the upper die holder 1 and the lower die holder 2 are provided with a limiting piece 5, the limiting piece 5 is used for fixing the positions of the upper die holder 1 and the lower die holder 2 during cold pressing, and when the upper die holder 1 and the lower die holder 2 are used for compressing the forming die 3 and the part 7, uneven stress is easily applied, so that the positions of the upper die holder 1 and the lower die holder 2 deviate, and the ball groove in the part 7 cannot be accurately formed during cold pressing, therefore, the limiting piece 5 is used for fixing the positions of the upper die holder 1 and the lower die holder 2, and the position deviation is avoided.

The limiting piece 5 comprises two limiting rods 51, two limiting holes 6 are formed in the upper die holder 1 and the lower die holder 2, two ends of each limiting rod 51 are inserted into holes of the upper die holder 1 and the lower die holder 2 respectively, each limiting rod 51 penetrates through the upper die holder 1 and the lower die holder 2 through the corresponding limiting hole 6, the limiting rods 51 are high in size precision, are in clearance fit with the limiting holes 6 of the upper die holder 1 and the lower die holder 2, the sizes are matched with each other, coaxiality of the upper die and the lower die is guaranteed, displacement of the upper die holder 1 and the lower die holder 2 due to stress is not generated during extrusion, and the limiting rods 51 play a role in positioning the forming die 3 to a certain extent.

Further, referring to fig. 3, an adaptation groove 23 matched with the taper section 32 is further formed at the inner wall of the lower die fixing hole 21.

When the oil press drives the upper die holder 1 and the forming die 3 to cool down in the part 7, the taper section 32 of the forming die 3 is larger than the inner diameter of the part 7, the outer wall of the part 7 can be jacked up when the inner wall of the part 7 is extruded in the cool down process, so that the outer wall of the part 7 is outwards protruded, in order to prevent the part 7 from being blocked in the lower die fixing hole 21, the adapting groove 23 matched with the taper section 32 is formed in the inner wall of the lower die fixing hole 21, and the situation that the part 7 is difficult to extrude due to uneven stress in the extrusion process is avoided.

In some embodiments, referring to fig. 2, the lower die holder 2 is further provided with a lower ejector rod 22; the lower ejector rod 22 is inserted into the lower die fixing hole 21, after the part 7 is cold-pressed and molded, the lower ejector rod 22 can be used for penetrating through the fixing hole of the lower die holder 2 and ejecting the part 7 out of the fixing hole of the lower die holder 2, so that the effect of conveniently recycling the cold-pressed part 7 is achieved.

In some embodiments, referring to fig. 4, the inner wall of the lower die fixing hole 21 is provided with a reset portion 24, the reset portion 24 may be a reset spring, one end of the lower die fixing hole 21 away from the upper die holder 1 is provided with a protrusion, the reset spring is mounted on the protrusion, and when the part 7 is inserted into the lower die fixing hole 21, the top end of the reset portion 24 abuts against the outer bottom surface of the part 7.

When the upper die holder 1 and the forming die 3 perform cold pressing on the part 7, the part 7 extrudes the reset part 24, the reset part 24 generates elastic force, after the cold pressing is finished, the upper die set and the forming die 3 are separated from the part 7, the reset part 24 can lift the part 7 up by the elastic force and lift the part 7 from the lower die fixing hole 21 so as to be convenient for recycling the part 7, the part can be mutually matched with the lower ejector rod 22 for use, the reset part 24 can also be independently used, after the part 7 is lifted, the part 7 can be directly held and pulled from the lower die fixing hole 21 for taking out, and after the lower ejector rod 22 is used, elastic assistance can be provided, so that the part 7 can be more easily ejected out of the lower die fixing hole 21.

In some embodiments, referring to fig. 5, a clamping portion 52 is further provided at the limiting rod 51; the clamping part 52 is slidably connected with the limiting rod 51 and is abutted against the part 7, the clamping part 52 can adopt a clamping rod, the clamping rod abuts against the limiting rod 51 and the outer surface of the part 7, the outer surface of the part 7 is abutted against, two limiting rods 51 are arranged, two clamping parts 52 are also arranged, and the two clamping parts 52 are utilized to abut against two ends of the outer surface of the part 7 respectively, so that the part 7 is stabilized, and the part 7 is prevented from being deviated in the cold pressing process.

Wherein, joint portion 52 is equipped with both ends, and both ends are semicircle ring, and one end agrees with the surface of spacing stick 51, and the other end agrees with the surface of part 7, and two semicircle ring structure openings are opposite to each other, and the centre can utilize the connecting rod to connect, and the inner wall that agrees with indicates semicircle ring can paste tightly in the outer wall of spacing stick 51 and part 7 just, and can not appear too big gap.

The two semicircular rings can be different in size, and are specifically determined according to the circular sizes of the outer surfaces of the limiting rod 51 and the part 7, the two semicircular ring structures are used, one end of each semicircular ring structure is used for clamping the surface of the limiting rod 51, the other end of each semicircular ring structure is used for clamping the outer surface of the part 7, two clamping parts 52 are arranged on the two limiting rods 51, two semicircular rings located on the outer surface of the part 7 are combined into a complete circular ring, the part 7 is fixed by the two clamping parts 52, and the stability of the cold pressing position of the part 7 in the cold pressing process is improved.

When the part 7 is offset in the cold pressing process, the offset force is transmitted to the limiting rod 51 through the clamping part 52, so that the part 7 can be tightly abutted by the limiting rod 51 to avoid the offset of the part 7, and meanwhile, the two semicircular rings of the clamping part 52 can move along the outer wall of the part 7 and the limiting rod 51, so that the part 7 can be detached, and the disassembly and the replacement are facilitated.

The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. The ball groove forming die for the ball sliding tube is characterized by comprising an upper die holder (1), a lower die holder (2), a forming die (3) and an ejection piece (4); an upper die fixing hole (11) is formed in the upper die holder (1); the lower die holder (2) is provided with a lower die fixing hole (21) for connecting the parts (7); the forming die (3) is connected with the upper die holder (1) through the upper die fixing hole (11); the forming die (3) is divided into three sections, the upper section is a mounting section (31), the middle section is a three-section spherical groove-shaped taper section (32) with taper, the lower section is a guide section (33), the mounting section (31) is connected with the upper die fixing hole (11), and the guide section (33) is spliced with the part (7); when the upper die holder (1) moves towards the lower die holder (2) to perform cold press, the taper section (32) is inserted into the part (7) to enable the part (7) to be subjected to cold press molding.

2. The ball groove forming die for the ball sliding tube according to claim 1 is characterized in that limiting pieces (5) are arranged on the upper die holder (1) and the lower die holder (2).

3. A ball groove forming die for a ball sliding tube according to claim 2, characterized in that the limiting member (5) comprises two limiting bars (51); two limiting holes (6) are formed in the upper die holder (1) and the lower die holder (2), and two ends of the limiting rod (51) are respectively inserted into the limiting holes (6) of the upper die holder (1) and the lower die holder (2).

4. The ball groove forming die of the ball sliding tube according to claim 1, wherein the lower die holder (2) is further provided with a lower ejector rod (22); the lower ejector rod (22) is inserted into the lower die fixing hole (21).

5. The ball groove forming die of the ball sliding tube according to claim 1, wherein an adaptation groove (23) matched with the taper section (32) is further formed in the inner wall of the lower die fixing hole (21).

6. The ball groove forming die of the ball sliding tube according to claim 1, wherein the inner wall of the lower die fixing hole (21) is provided with a reset portion (24); when the part (7) is positioned in the lower die fixing hole (21), the reset part (24) is abutted with the part (7).

7. A ball groove forming die for a ball sliding tube according to claim 3, wherein the limiting rod (51) is further provided with a clamping part (52); the clamping part (52) is connected with the limiting rod (51) in a sliding mode and is abutted with the part (7).

8. The ball groove forming die for the ball sliding tube according to claim 7, wherein the clamping portion (52) is provided with two ends, both ends are semicircular rings, one end is matched with the outer surface of the limiting rod (51), and the other end is matched with the outer surface of the part (7).