阅读说明：本技术 一种轴承滚针保持架焊接装置及方法 (Welding device and method for bearing needle roller retainer ) 是由 杨建明 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种轴承滚针保持架焊接装置及方法,包括整圆后的轴承滚针保持架,还包括轴承滚针保持架定位模具和焊接电极机构,所述焊接电极机构位于轴承滚针保持架定位模具内,轴承滚针保持架定位模具设有冲头,所述整圆后的轴承滚针保持架位于焊接电极机构和冲头之间,焊接电极机构通电后对整圆后的轴承滚针保持架的接缝进行焊接。与现有技术相比,本发明利用在矩形钢板坯料上冲出放置滚针的长槽,再圈圆,两个左右电极对整圆后的轴承滚针保持架的接缝进行通电焊接形成保持架,用该方法来制造保持架,可大大提高材料利用率和生产效率,能够快速完成对接缝的焊接,而且焊接效果好。(The invention discloses a welding device and a welding method for a bearing needle roller retainer, which comprise a bearing needle roller retainer which is round, a bearing needle roller retainer positioning die and a welding electrode mechanism, wherein the welding electrode mechanism is positioned in the bearing needle roller retainer positioning die, the bearing needle roller retainer positioning die is provided with a punch, the bearing needle roller retainer which is round is positioned between the welding electrode mechanism and the punch, and the welding electrode mechanism is electrified to weld the joint of the bearing needle roller retainer which is round. Compared with the prior art, the retainer is manufactured by punching the long groove for placing the roller pin on the rectangular steel plate blank, then rounding, and electrifying and welding the joints of the bearing roller pin retainer which is rounded by the two left and right electrodes to form the retainer.)

1. The welding device for the bearing needle roller retainer comprises the bearing needle roller retainer which is round, and is characterized by further comprising a bearing needle roller retainer positioning die and a welding electrode mechanism, wherein the welding electrode mechanism is located in the bearing needle roller retainer positioning die, the bearing needle roller retainer positioning die is provided with a punch, the bearing needle roller retainer which is round is located between the welding electrode mechanism and the punch, and the welding electrode mechanism is electrified to weld the joint of the bearing needle roller retainer which is round.

2. The bearing needle cage welding apparatus according to claim 1, wherein: the bearing needle roller retainer positioning die comprises a lower die holder, a lower base plate arranged on the upper end surface of the lower die holder, a lower die plate arranged on the upper end surface of the lower base plate, a stripper plate arranged on the upper end surface of the lower die plate, a stop plate arranged on the upper end surface of the stripper plate, an upper clamping plate arranged on the upper end surface of the stop plate, an upper base plate arranged on the upper end surface of the upper clamping plate and an upper die holder arranged on the upper end surface of the upper base plate, wherein the top end of a punch is vertically fixed on the lower end surface of the upper base plate, the lower part of the punch sequentially penetrates through the upper clamping plate, the stop plate, the stripper plate and the lower die plate, and a semicircular groove matched with a full-round bearing needle roller retainer is formed in the lower end surface of the punch; the lower part of the welding electrode mechanism penetrates through the lower backing plate and then is fixed on the upper end face of the lower die base.

3. The bearing needle cage welding apparatus according to claim 1 or 2, wherein: the welding electrode mechanism comprises two left electrodes arranged in parallel and two right electrodes arranged in parallel, quarter semicircular grooves are respectively formed in the opposite sides of the left electrodes and the right electrodes, the left electrodes and the right electrodes are symmetrically arranged, gaps are reserved between the left electrodes and the right electrodes, and seams of the bearing needle roller retainer after being rounded are positioned in the gaps; the outer sides of the two left electrodes are respectively connected with a left electrifying guide pillar, and the outer sides of the two right electrodes are respectively connected with a right electrifying guide pillar.

4. The bearing needle cage welding apparatus according to claim 3, wherein: a first through hole is formed in the outer side of the left electrode, and one end of the left electrifying guide pillar is embedded into the first through hole; and a second through hole is formed in the outer side of the right electrode, and one end of the right electrifying guide pillar is embedded into the second through hole.

5. The bearing needle cage welding apparatus according to claim 2, wherein: the upper end face of one side of the lower die base is vertically connected with an outer guide pillar, and the lower end face of the upper die base right above the outer guide pillar is provided with a sleeve matched with the outer guide pillar.

6. A bearing needle cage welding method is characterized in that the bearing needle cage is welded by the bearing needle cage welding device according to claim 3, and the method comprises the following specific steps:

and placing the bearing needle roller retainer after being completely round in a round hole formed by a semicircular groove formed on the welding electrode mechanism and a semicircular groove at the lower end of the punch, enabling the joint of the bearing needle roller retainer after being completely round to be positioned in a gap formed between the left electrode and the right electrode, pressing the bearing needle roller retainer after being completely round through the punch, electrifying the left electrifying guide pillars connected to the outer sides of the two left electrodes and the right electrifying guide pillars connected to the outer sides of the two right electrodes, and welding the bearing needle roller retainer after being completely round.

Technical Field

The invention relates to the technical field of bearing needle roller retainer processing, in particular to a welding device and a welding method for a bearing needle roller retainer.

Background

The needle bearing is a part commonly used in mechanical transmission, and generally comprises an inner ring, an outer ring, a needle roller and a retainer. The retainer keeps the roller pins at a fixed position and prevents the roller pins from being gathered together. The manufacturing method of the prior retainer comprises the following steps: drawing a square steel plate into a deep barrel shape, then punching the barrel bottom, punching the flanges on two end faces to form a pipe shape, punching long grooves for placing roller pins on a punch according to the diameter of the roller pins on the circumference of the pipe wall one by one, and shaping to form the retainer. The method has the advantages of more waste of materials for manufacturing the retainer, low production efficiency and difficult guarantee of quality.

At present, long grooves for placing roller pins are directly punched on a rectangular steel plate, then the long grooves are rounded, and finally welded joints form a bearing roller pin retainer, such as the bearing roller pin retainer disclosed in the Chinese patent application number: CN200510049407.4 discloses a method for forming a needle bearing retainer. Aims to provide a simple and efficient method for manufacturing and forming a needle bearing retainer. According to the width, material thickness and circumference of the retainer to be formed, blanking into a rectangular flat blank with the same width and thickness as the retainer and the same length as the circumference of the retainer, punching long grooves for placing roller pins on the blank, circling, and welding seams to form the retainer. The retainer manufactured by the method can greatly improve the material utilization rate and the production efficiency. The original long slotted holes on the circumference are punched one by one, and the punching is finished on a flat plate by one time.

Although the method can improve the production efficiency of the retainer and reduce the material waste, the prior art lacks a welding device and a welding process which can quickly weld the retainer after being round, so the development of a welding device and a welding method of the bearing needle roller retainer is urgently needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a device and a method for welding a bearing needle roller retainer.

In order to achieve the purpose, the invention is implemented according to the following technical scheme:

the invention provides a welding device for a bearing needle roller retainer, which comprises a bearing needle roller retainer which is round, a positioning die for the bearing needle roller retainer and a welding electrode mechanism, wherein the welding electrode mechanism is positioned in the positioning die for the bearing needle roller retainer, the positioning die for the bearing needle roller retainer is provided with a punch, the bearing needle roller retainer which is round is positioned between the welding electrode mechanism and the punch, and the welding electrode mechanism is electrified to weld the seam of the bearing needle roller retainer which is round.

Further, the bearing needle roller retainer positioning die comprises a lower die holder, a lower base plate arranged on the upper end surface of the lower die holder, a lower die plate arranged on the upper end surface of the lower base plate, a stripper plate arranged on the upper end surface of the lower die plate, a stop plate arranged on the upper end surface of the stripper plate, an upper clamping plate arranged on the upper end surface of the stop plate, an upper base plate arranged on the upper end surface of the upper clamping plate and an upper die holder arranged on the upper end surface of the upper base plate, wherein the top end of a punch is vertically fixed on the lower end surface of the upper base plate, the lower part of the punch sequentially penetrates through the upper clamping plate, the stop plate, the stripper plate and the lower die plate, and a semicircular groove matched with the bearing needle roller retainer after being rounded is formed in the lower end surface of the punch; the lower part of the welding electrode mechanism penetrates through the lower backing plate and then is fixed on the upper end face of the lower die base.

Furthermore, the welding electrode mechanism comprises two left electrodes arranged in parallel and two right electrodes arranged in parallel, opposite sides of the left electrodes and the right electrodes are respectively provided with a quarter semicircular groove, the left electrodes and the right electrodes are symmetrically arranged, a gap is reserved between the left electrodes and the right electrodes, and a seam of the bearing needle roller retainer after being rounded is positioned in the gap; the outer sides of the two left electrodes are respectively connected with a left electrifying guide pillar, and the outer sides of the two right electrodes are respectively connected with a right electrifying guide pillar.

Furthermore, a first through hole is formed in the outer side of the left electrode, and one end of the left electrifying guide pillar is embedded into the first through hole; and a second through hole is formed in the outer side of the right electrode, and one end of the right electrifying guide pillar is embedded into the second through hole.

Furthermore, the upper end face of one side of the lower die holder is vertically connected with an outer guide pillar, and a sleeve matched with the outer guide pillar is arranged on the lower end face of the upper die holder right above the outer guide pillar.

The second purpose of the invention is to provide a welding method of a bearing needle roller retainer, which utilizes the welding device of the bearing needle roller retainer to weld the bearing needle roller retainer, and comprises the following concrete steps:

and placing the bearing needle roller retainer after being completely round in a round hole formed by a semicircular groove formed on the welding electrode mechanism and a semicircular groove at the lower end of the punch, enabling the joint of the bearing needle roller retainer after being completely round to be positioned in a gap formed between the left electrode and the right electrode, pressing the bearing needle roller retainer after being completely round through the punch, electrifying the left electrifying guide pillars connected to the outer sides of the two left electrodes and the right electrifying guide pillars connected to the outer sides of the two right electrodes, and welding the bearing needle roller retainer after being completely round.

Compared with the prior art, the retainer is manufactured by punching the long groove for placing the roller pin on the rectangular steel plate blank, then rounding, and electrifying and welding the joints of the bearing roller pin retainer which is rounded by the two left and right electrodes to form the retainer.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the welding electrode mechanism of the present invention.

Fig. 3 is an isometric view of a welding electrode mechanism of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

As shown in fig. 1 to fig. 3, the present embodiment specifically discloses a welding device for a bearing needle roller retainer, which includes a bearing needle roller retainer 16 after being rounded, and further includes a positioning die for the bearing needle roller retainer and a welding electrode mechanism, the welding electrode mechanism is located in the positioning die for the bearing needle roller retainer, the positioning die for the bearing needle roller retainer is provided with a punch 10, the bearing needle roller retainer 16 after being rounded is located between the welding electrode mechanism and the punch 10, and the welding electrode mechanism is electrified to weld the joint of the bearing needle roller retainer 16 after being rounded.

In the actual use process, long grooves for placing the rolling needles can be punched on a rectangular steel plate blank, then the rectangular steel plate blank is circled, and then the welding electrode mechanism is used for carrying out power-on welding on the joints of the bearing rolling needle retainer after being circled to form the retainer, so that the material utilization rate and the production efficiency are greatly improved.

In the embodiment, the positioning die for the bearing needle roller retainer comprises a lower die base 8, a lower backing plate 7 arranged on the upper end surface of the lower die base 8, a lower die plate 6 arranged on the upper end surface of the lower backing plate 7, a stripper plate 5 arranged on the upper end surface of the lower die plate 6, a stop plate 4 arranged on the upper end surface of the stripper plate 5, an upper clamp plate 3 arranged on the upper end surface of the stop plate 4, an upper backing plate 2 arranged on the upper end surface of the upper clamp plate 3 and an upper die base 1 arranged on the upper end surface of the upper backing plate 2, wherein the top end of a punch 10 is vertically fixed on the lower end surface of the upper backing plate 2, the lower part of the punch 10 sequentially penetrates through the upper clamp plate 3, the stop plate 4, the stripper plate 5 and the lower die plate 6, and a semicircular groove 15 matched with a full-circle bearing needle roller retainer 16 is formed on the lower end surface of the punch 10; the lower part of the welding electrode mechanism penetrates through the lower backing plate and then is fixed on the upper end surface of the lower die base 8;

the welding electrode mechanism comprises two left electrodes 14 arranged in parallel and two right electrodes 11 arranged in parallel, opposite sides of the left electrodes 14 and the right electrodes 11 are respectively provided with a quarter semicircular groove 18, the left electrodes 14 and the right electrodes 11 are symmetrically arranged, a gap is reserved between the left electrodes 14 and the right electrodes 11, and a seam of a full-circle bearing needle roller retainer 16 is positioned in the gap; a first through hole is formed in the outer side of the left electrode 14, and one end of the left electrifying guide pillar 13 is embedded into the first through hole; a second through hole is formed in the outer side of the right electrode 11, and one end of the right electrified guide pillar 12 is embedded into the second through hole.

The bearing needle roller retainer positioning die is used for compressing and positioning the bearing needle roller retainer, so that the bearing needle roller is kept and positioned in a round hole formed by the semicircular groove on the welding electrode mechanism and the semicircular groove at the lower end of the punch, and the seam of the bearing needle roller retainer 16 after being rounded is positioned in a gap, so that the seam of the bearing needle roller retainer 16 after being rounded is welded after the left electrode 14 and the right electrode 11 are electrified.

As shown in fig. 1, in an actual use process, in order to ensure stability of opening and closing the mold, an outer guide post 6 is vertically connected to an upper end surface of one side of the lower mold base 8, and a sleeve 17 matched with the outer guide post 6 is arranged below the upper mold base 1 located right above the outer guide post 6.

The working principle is as follows:

the welding device for the bearing needle roller retainer is used for welding the bearing needle roller retainer, and comprises the following specific steps:

cleaning the surface of the bearing needle roller retainer 16 after being completely round, placing the bearing needle roller retainer 16 in a round hole formed by a semicircular groove on a welding electrode mechanism and a semicircular groove at the lower end of a punch 10, enabling the joint of the bearing needle roller retainer 16 after being completely round to be positioned in a gap formed between a left electrode 14 and a right electrode 11, applying pressure P by the punch 10 to tightly press the bearing needle roller retainer 16 after being completely round, electrifying a left electrifying guide post 13 connected with the outer sides of the two left electrodes 14 and a right electrifying guide post 12 connected with the outer sides of the two right electrodes 11, welding the bearing needle roller retainer 16 after being completely round, generating a large amount of heat at the contact part of the left electrode 14 and the right electrode 11 when enough current passes through during welding, quickly heating the bearing needle roller retainer 16 after being completely round in the central hottest area to a high-plasticity or melting state to form a lens-shaped liquid molten pool, the punch 10 continues to maintain the pressure P, the current is interrupted, and after the metal cools, a weld is formed, completing the welding of the joint.

The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.