CN216938208U

CN216938208U - Adjustable spherical rolling tool

Info

Publication number: CN216938208U
Application number: CN202220542365.7U
Authority: CN
Inventors: 游志明; 张伟
Original assignee: Jiangsu Shuguang Oil Drilling Equipment Co ltd
Current assignee: Jiangsu Shuguang Energy Equipment Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-12
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses an adjustable spherical rolling tool which comprises an arm rod, a spring, a pin, a mandrel, a guide sleeve, a set screw, a pressure head and a nut sleeve. The arm rod is formed by axially connecting two sections of rectangular strip blocks, the front rectangular strip block is provided with an axial blind hole for mounting a spring, a mandrel and a guide sleeve, and the end of the blind hole is provided with an internal thread and an axial semicircular groove matched with a pin. The large-diameter end of the guide sleeve extends into the axial blind hole of the armed lever to form a detachable deflection structure by using a pin. The nut sleeve is screwed into the inner thread of the arm rod and used for locking the guide sleeve. One end of the pressure head is a cone, and the other end of the pressure head is a square tenon. The conical tip of the pressure head is embedded with artificial diamond. The pressure head is inserted into the inner hole of the guide sleeve by the tenon section and is radially locked by a set screw to form a pressure head inserting type mounting structure. The utility model has double adjustable pressure head station structures, fully utilizes different directions of the exposed end of the artificial diamond to roll, improves the rolling quality and efficiency and saves the production cost.

Description

Adjustable spherical rolling tool

Technical Field

The utility model belongs to a technical scheme in the technical field of machining, and particularly relates to a rolling tool for plastic machining, in particular to an adjustable spherical rolling tool.

Background

The rolling (rolling) forming technology belongs to one of the machining processes commonly used in the machine manufacturing industry, and the non-cutting forming machining process is most suitable for finishing important shaft parts. At present, the rolling tool for finish machining of shaft parts in the industry is generally in a roller structure type, and the structure utilizes a hard roller with a smooth surface to roll the surface of a shaft part to be machined, and the rolled part of the shaft part generates micro plastic deformation after continuous rolling for a period of time. The physical effect is that the roughness of the surface of the shaft part is obviously improved; on the other hand, the surface layer metal of the shaft element is continuously rolled to generate a 'cold hardening' effect. The two positive effects are beneficial to improving the quality of the shaft, and particularly the surface wear resistance and fatigue resistance of the rolled shaft are greatly improved. However, the rolling tool in the prior art has short service life, and the basic reason is that the configured rolling wheel is limited by material properties and heat treatment process conditions, and the strength and hardness are limited, so that the service life of the rolling wheel is short. Frequent replacement of the rollers during production obviously increases manufacturing costs. In addition, the rolling tool in the prior art is limited by the structure of the roller, and cannot roll narrow shaft necks or shaft sections with a slightly complex structure. In view of the above practical situation, the prior art can not meet the matching requirement of the finish machining of large-batch shaft parts.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at the defects of the prior art and provides an adjustable spherical rolling tool which is simple in structure, easy to manufacture, good in rolling forming quality, long in service life and high in rolling efficiency.

The utility model achieves the technical aim through the following technical scheme.

The adjustable spherical rolling tool comprises an arm rod, a spring, a pin, a mandrel, a guide sleeve, a set screw, a pressure head and a nut sleeve. The improvement is that: the armed lever is formed by connecting two sections of rectangular bar blocks with different lengths in an axial direction, the front rectangular bar block is shorter than the rear rectangular bar block and has a thick cross section, an axial blind hole is formed in the middle position of the outer end face of the front rectangular bar block, an internal thread and an axial semicircular groove matched with a pin are arranged at the end of the blind hole, and a spring, a mandrel and a guide sleeve are coaxially arranged in the blind hole. The outer arm of the guide sleeve is provided with a section of axial shoulder, the large-diameter end extends into the axial blind hole of the arm rod, and the matching part is assembled into a detachable deflection limiting structure by a pin. The nut sleeve is an annular external thread component, is sleeved from the small-diameter end of the guide sleeve and is connected with the internal thread at the axial blind hole end of the arm rod to form an axial elastic telescopic structure of which the guide sleeve is pressed by the built-in spring. One end of the pressure head is a cone, the tip of the cone is in a spherical crown shape, the cross section of the other end of the pressure head is a square tenon, and the tenon section is inserted into an exposed inner hole of the guide sleeve and radially locked by a set screw, so that a suspended pressure head insertion type mounting structure is formed.

As a further development, the spring is a belleville spring.

As a further development, the pin is a cylindrical pin.

As a further improvement scheme, the outer wall of the large-diameter end of the guide sleeve is provided with three axial semicircular grooves, and the axial semicircular grooves are spaced at intervals of alpha = 30-45 degrees.

As a further improvement scheme, the pressure head is a cone with a cone angle of 30-60 degrees, and a spherical artificial diamond is embedded at the end part of the cone angle.

Compared with the prior art, the utility model has the following positive effects:

1. the adjustable spherical rolling tool is a rod-shaped component, so that the structure is relatively simple, the manufacture is easy, and the use is convenient and fast;

2. the rolling tool with the built-in axial elastic telescopic structure is always in a flexible pressing state in the rolling process, so that the rolling working condition is very stable, and a good basic condition is created for improving the rolling quality;

3. the exposed part of the artificial diamond embedded at the end part of the pressure head is in a spherical crown shape, and the unit area pressure intensity is much larger than that of a roller applied in the prior art when pressure is applied, so that the effect is favorable for improving the rolling quality and the rolling efficiency is also obviously improved;

4. in order to facilitate the pressing head to be used for rolling in multiple directions, a deflection limiting structure and an insertion type mounting structure are specially arranged, the double adjustable pressing head station structure is provided, the rolling can be performed by reasonably utilizing spherical surfaces of the artificial diamond in different directions, the structural improvement can multiply and add the service life of a rolling tool, and therefore the production cost is greatly saved, and the double adjustable pressing head station structure is suitable for being matched with mass production.

Drawings

Fig. 1 is a perspective view of the present invention after being removed from the field.

Fig. 2 is a perspective view of the outer shape of fig. 1.

Fig. 3 is a schematic view of the press head of fig. 1.

Fig. 4 is a schematic view of the guide sleeve structure in fig. 1.

Fig. 5 is a side view schematic of fig. 4.

Detailed Description

The utility model is further explained below with reference to the figures and with reference to the examples.

The adjustable spherical rolling tool shown in fig. 1 and 2 comprises an arm rod 1, a spring 2, a pin 3, a mandrel 4, a guide sleeve 5, a set screw 6, a pressure head 7 and a nut sleeve 8. The arm rod 1 is a slender rod piece and is formed by axially connecting two sections of rectangular strips with different lengths, wherein the front rectangular strip is shorter than the rear rectangular strip and has a thicker cross section. Thinner rear rectangular strip belongs to the clamping end in the structure, leading rectangular strip is the main structure component, is equipped with the axial blind hole in the outer end face position in the middle, and the blind hole mouth end is equipped with internal thread and one with round pin 3 complex axial half slot, in proper order toward the axial blind hole in coaxial installation spring 2, dabber 4 and guide pin bushing 5. The guide sleeve 5 is a shaft sleeve type component with a section of axial shoulder on the outer wall, as shown in fig. 4 and 5. In 5 major diameter ends of guide pin bushing stretched into 1 axial blind hole of armed lever, cooperation department constitutes detachable limit structure that deflects with round pin 3, supporting round pin 3 is cylindrical round pin in this embodiment, for the convenience of guide pin bushing 5 in assigned position department ration around the axle deflect, be equipped with three axial half slots on 5 major diameter end outer walls of guide pin bushing, alternate alpha =45 between the axial half slot in this embodiment, this structure accomplishes that guide pin bushing 5 can have three ration deflection position relative to armed lever 1. The nut sleeve 8 is an annular external thread component, the nut sleeve 8 is sleeved from the small-diameter end of the guide sleeve 5 during installation and is connected with the internal thread at the axial blind hole end of the arm rod 1, the nut sleeve 8 is screwed to form an axial elastic telescopic structure of the guide sleeve 5 pressed by the built-in spring 2, the flexible structure has a load buffering effect, impact on artificial diamond in the rolling process is avoided, and the rolling working condition is directly improved. The spring 2 used in this embodiment is a belleville spring. The pressing head 7 is shown in fig. 3, and is in direct contact with the surface of the processing shaft in the structure, and the structure, the shape and the material of the pressing head directly influence the rolling quality and the rolling efficiency. In order to overcome the defects of the roller rolling in the prior art, one end of the pressing head 7, which is in contact with the surface of the shaft to be processed, is designed into a cone with a conical angle of 45 degrees in the embodiment. Because the performance of the pressing head 7 made of conventional materials has limitation, the rolling operation cannot be efficiently completed. The utility model not only improves the structure, but also gives full play to the superhard characteristic of the artificial diamond, the spherical artificial diamond is embedded at the conical tip end part of the pressure head 7, the exposed part of the artificial diamond is in a spherical crown shape, and the periphery of the artificial diamond has the same interface and can be used for rolling. In order to adjust or change the installation position of the pressure head 7, the other end of the pressure head 7 is made into a tenon with a square cross section, the tenon section is inserted into an exposed inner hole of the guide sleeve 5 and is radially locked by a set screw 6, and thus, the suspended pressure head 7 insertion type installation structure is formed. In the structure, the mounting position of the pressure head 7 can be adjusted or changed as required by rotating the set screw 6, the difference of 90 degrees is formed between every two stations, and the deflection limiting structure is provided with three adjustable positions which are separated by 45 degrees, so that the utility model is provided with 3 multiplied by 4=12 stations which are adjustable. The double adjustable pressing head 7 station structure can reasonably utilize the spherical surfaces of the artificial diamond in different directions for rolling, and the service life of the rolling tool can be prolonged by several times by improving the structure, so that the production cost is greatly saved. The rolling tool has relatively small surface contact area with the processing shaft, so that the pressure intensity per unit area is large when the pressure is applied, and the technical effect of the rolling tool not only improves the rolling quality, but also obviously improves the rolling efficiency. In addition, the conical pressing head 7 occupies a small space, and can meet the requirement of conventional shaft section surface rolling and can also be used for rolling a shaft neck with a narrow position. Therefore, the utility model is particularly suitable for mass production.

Claims

1. An adjustable spherical rolling tool comprises an arm rod (1), a spring (2), a pin (3), a mandrel (4), a guide sleeve (5), a set screw (6), a pressure head (7) and a nut sleeve (8); the method is characterized in that: the arm rod (1) is formed by axially connecting two sections of rectangular strips with different lengths, the front rectangular strip is shorter than the rear rectangular strip and has a thicker cross section, an axial blind hole is formed in the middle of the outer end face of the front rectangular strip, an internal thread and an axial semicircular groove matched with the pin (3) are formed in the end of the blind hole, and the spring (2), the mandrel (4) and the guide sleeve (5) are coaxially arranged in the blind hole; the outer arm of the guide sleeve (5) is provided with a section of axial shoulder, the large-diameter end extends into the axial blind hole of the arm rod (1), and the matching part forms a detachable deflection limiting structure by using a pin (3); the nut sleeve (8) is an annular external thread component, the nut sleeve (8) is sleeved from the small-diameter end of the guide sleeve (5) and is connected with the internal thread at the axial blind hole end of the arm rod (1) to form an axial elastic telescopic structure in which the guide sleeve (5) is pressed by the built-in spring (2); one end of the pressure head (7) is a cone, the tip of the cone is in a spherical crown shape, the cross section of the other end of the pressure head (7) is a square tenon, and the tenon section is inserted into an exposed inner hole of the guide sleeve (5) and radially locked by a set screw (6), so that a suspended pressure head (7) insertion type installation structure is formed.

2. The adjustable spherical rolling tool of claim 1, wherein: the spring (2) is a belleville spring.

3. The adjustable spherical rolling tool of claim 1, wherein: the pin (3) is a cylindrical pin.

4. The adjustable spherical rolling tool of claim 1, wherein: the outer wall of the large-diameter end of the guide sleeve (5) is provided with three axial semicircular grooves, and alpha = 30-45 degrees is arranged between the axial semicircular grooves at intervals.

5. The adjustable spherical rolling tool of claim 1, wherein: the pressure head (7) is a cone with a cone angle of 30-60 degrees, and a spherical artificial diamond (7.1) is embedded at the end part of the cone angle.