WO2022261891A1

WO2022261891A1 - Fine treatment apparatus for internal gear surface

Info

Publication number: WO2022261891A1
Application number: PCT/CN2021/100571
Authority: WO
Inventors: 黄廷波; 陆小兵; 李荫现; 龚仁春; 周智慧; 葛澄
Original assignee: 江苏飞船股份有限公司
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-12-22

Abstract

Disclosed is a fine treatment apparatus for an internal gear surface, comprising a base (1) fixedly connected to an abrasive flow device. The base (1) is provided with a port (10) connected to a discharge of the abrasive flow device. The base (1) is detachably connected to a sleeve (2) used for wrapping an internal gear. The sleeve (2) is detachably connected to a cover (3). The cover (3) is slidably and sealably connected to the abrasive flow device. The cover (3) is provided with a port (31) connected to a feed of the abrasive flow device. When the base, the sleeve, and the cover are connected and mounted to the abrasive flow device, the tooth surface burrs and the inner hole burrs of the internal gear can be removed. At the same time, scratches on the internal gear surface are repaired. The power of abrasive particles extruded by the abrasive flow device is used to drive the internal gear to rotate, the removal efficiency of the abrasive flow is improved, and upper and lower end surfaces and the outer side surface of the gear are repaired and deburred.

Description

A surface refinement treatment device for internal gears

technical field

The invention belongs to the field of precision gears, and in particular relates to a device for refining the surface of internal gears.

Background technique

Internal gears are a common component for power transmission. Internal gears that transmit power through hydraulic pressure need to drill a hole on each tooth surface to communicate with the outside world. However, when processing the tooth profile and drilling of internal gears At the same time, a large number of burrs are often left on the tooth end surface and the connection between the drill hole and the tooth surface, which affects the power transmission of the gear. And the opening on the other side flows out to remove the burr, and the abrasive particles flow out directly to the external space. However, this method has low work efficiency and requires manual assistance to collect the abrasive particles into the equipment, and this method cannot be used without the end face of the internal gear The burr and the indentation produced by the fixture cannot be removed when the internal gear is processed, and manual grinding is required, so it is impossible to finely process the internal gear.

Contents of the invention

In order to overcome the problem of incomplete deburring and low efficiency of internal gears in the prior art, the present invention provides a surface refinement treatment device for internal gears, which removes burrs, burrs, The inner hole burrs are removed, and the scratches on the inner gear surface are repaired at the same time.

The technical solution of the present invention is: a device for refining the surface of internal gears, including a base; the base is fixedly connected to the abrasive flow equipment, and the base is provided with an interface with the outlet of the abrasive flow equipment. The base is detachably connected with a sleeve for wrapping the internal gear, the sleeve is detachably connected with a cover, the cover is in sliding and sealing connection with the abrasive flow equipment, and the cover is provided with Interface with the feeding place of the abrasive flow equipment. When the base, sleeve and cover are connected and installed to the abrasive flow equipment, the tooth surface burrs and inner hole burrs of the internal gear can be removed, and the surface of the internal gear can be cleaned at the same time. Scratches are repaired.

Preferably, the upper circumference of the base is evenly provided with a plurality of first bolt holes for connecting with the abrasive flow equipment, and the upper end surface of the base is provided with a first placement groove, and the first placement groove is used for installing For sheet metal parts, a positioning groove is provided on the upper end surface of the base, and a rubber sleeve is filled in the positioning groove. The limit groove for the fastening of the sleeve described above.

Preferably, the sheet metal part is formed into a "U" shape by die-casting, and the upper end surface of the bottom of the sheet metal part is provided with a spiral groove for the passage of abrasive grains, and the side of the sheet metal part can be deformed after being squeezed, so The upper end surface of the sheet metal part is used to place the internal gear.

Preferably, the inner circumference of the internal gear is evenly provided with a plurality of internal gear teeth, and one end surface of each internal gear tooth is provided with a hydraulic hole communicating with the outside world.

Preferably, a first housing cover is slidably sleeved outside the lower side of the sleeve, a first buffer chamber is formed between the first housing cover and the sleeve, and a first buffer chamber is sealed and slidably disposed in the first buffer chamber. A sealing block, the first sealing block is welded to the sleeve, the first sealing block is connected to the upper end wall of the first buffer chamber through a plurality of first springs, and the lower end surface of the first outer shell is welded There is a limit ring snap-fitted with the limit groove.

Preferably, a second housing is sleeved on the upper side of the sleeve, and a side of the second housing close to the sleeve forms a second buffer chamber with the sleeve, and the inside of the second buffer chamber The sealing slide is provided with a second sealing block, the second sealing block is connected to the second buffer chamber through a second spring, the second sealing block is welded to the sleeve, and the upper end surface of the second housing cover is fixed A connecting ring is provided, and a plurality of threaded holes are arranged on the upper circumference of the connecting ring.

Preferably, the cover includes a plurality of second bolt through holes, the feed port of the abrasive particle flow equipment, and a second placement groove, and the second bolt through holes are used to connect the cover and the connecting ring with bolts, The second arranging groove is used for installing the second sheet metal part.

installation method;

1. After inserting the outlet port of the abrasive flow equipment on the base into the outlet of the abrasive flow equipment, use bolts to fix the base to the abrasive flow equipment, and put the first sheet metal part into the first placement slot After inside, put the inner tooth gear into the upper end surface of the sheet metal part;

2. Set the sleeve on the inner gear, and connect the limit ring with the limit groove. At this time, after the outer surface of the sheet metal part is squeezed by the end surface of the first outer shell, the two fit together and get close to each other. , to prevent abrasive grains from flowing out from the joint between the base and the lower end surface of the first housing;

3. At this time, the operator can install the second sheet metal part into the second placement groove, and manually lift the connecting ring. At this time, the second spring and the first spring are stretched, so that the upper end surface of the connecting ring is in contact with the cover. After the lower end surface is fitted, use bolts to connect the cover and the connecting ring bolts together. At this time, the device on the side of the recovery material port of the abrasive flow equipment is lowered, and the inlet port of the abrasive flow equipment is inserted into the recovery material of the abrasive flow equipment. Abrasive flow equipment can be operated at a distance from the port.

Beneficial effect:

1. The present invention is applicable to internal gears of various specifications. After the lifting force of the abrasive grains of the abrasive grain flow equipment is used to form a gap between the contact surface of the gear and the sheet metal part, the power of the abrasive grain equipment to squeeze out the abrasive grains is used to drive the internal The toothed gear rotates to enhance the efficiency of abrasive flow removal;

2. The present invention uses the hydraulic hole in the internal gear to make the power of the abrasive grains extruded by the abrasive flow equipment into the rotational force of the internal gear, thereby strengthening the burr grinding effect of the internal gear, and at the same time improving the external surface of the internal gear. Repair possible scratches and dents.

Description of drawings

Fig. 1 is the three-dimensional rendering of the present invention;

Figure 2 is a cutaway isometric view of the present invention;

Fig. 3 is a three-dimensional schematic diagram of an internal gear;

Fig. 4 is a perspective view of parts 13 at Fig. 2;

In the figure, the base 1, the outlet port 10 of the abrasive particle flow equipment, the first bolt through hole 11, the first placement groove 12, the sheet metal part 13, the spiral groove 15, the positioning groove 16, the rubber sleeve 17, the limit groove 18. Sleeve 2, first housing cover 20, limit ring 201, first sealing block 21, first buffer cavity 22, first spring 220, second housing cover 23, second buffer cavity 24, second spring 25 , the second sealing block 26, the connecting ring 27, the threaded hole 271, the cover 3, the second bolt through hole 30, the interface 31 of the feeding part of the abrasive flow equipment, the second placement groove 32, the internal tooth gear 4, the internal tooth of the gear 40. Hydraulic hole 41.

detailed description

The present invention will be described in detail below in conjunction with accompanying drawings 1 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. For the convenience of introduction, the specific form of the spring connection is not described below, which can adopt the conventional setting method in the mechanical design manual, that is, a groove or a protrusion is set to position the spring.

As shown in Fig. 1-Fig. 4, a device for refining the surface of internal gears includes a base 1; the base 1 is fixedly connected to the abrasive flow equipment, and the base 1 is provided with an interface 10 with the outlet of the abrasive flow equipment. The base 1 is detachably connected with a sleeve 2 for wrapping the internal gear, and the sleeve 2 is detachably connected with a cover 3, the cover 3 is in sliding and sealed connection with the abrasive flow equipment, and the cover 3 is provided with The interface 31 with the feeding part of the abrasive flow equipment, when the base 1, the sleeve 2 and the cover 3 are connected and installed to the abrasive flow equipment, the tooth surface burrs and inner hole burrs of the internal gear can be removed, and the internal gear Repair scratches on the gear surface.

As shown in Figures 1 to 4, a plurality of first bolt holes 11 for connecting with abrasive flow equipment are evenly provided on the upper circumference of the base 1, and the upper end surface of the base 1 is provided with a first placement groove 12, and the first placement groove 12 is used to install the sheet metal parts 13, the upper end surface of the base 1 is also provided with a positioning groove 16, the positioning groove 16 is filled with a rubber sleeve 17, the diameter of the positioning groove 16 is larger than the diameter of the first placement groove 12, and the rubber sleeve 17 is provided with a The limit groove 18 is engaged with the sleeve 2 .

As shown in Figures 1 to 4, the sheet metal part 13 is formed into a "U" shape by die-casting, and the upper end surface of the bottom of the sheet metal part 13 is provided with a volute groove 15 for the passage of abrasive particles. After the side of the sheet metal part 13 is extruded Deformable, the upper end surface of the sheet metal part 13 is used to place the internal tooth gear 4, and the upper end surface of the bottom of the sheet metal part 13 is squeezed and deformed after installation, so that after the sleeve 2 is installed on the 1, the upper end surface of the sheet metal part 13 closely fits the joint , to avoid the outflow of abrasive particles, while the 15 on the 13 makes the

internal tooth gear

4 and 13 end faces tightly bonded, the abrasive particles can still flow through the volute groove, and the upper and lower end faces of the internal tooth gear 4 are polished.

As shown in FIGS. 1-4 , the inner circumference of the internal gear 4 is uniformly provided with a plurality of internal gear teeth 40 , and one end surface of each internal gear tooth 40 is provided with a hydraulic hole 41 communicating with the outside world.

As shown in Figures 1 to 4, a first outer shell 20 is slidably sleeved outside the lower side of the sleeve 2, and a first buffer chamber 22 is formed between the first outer shell 20 and the sleeve 2, and the first buffer chamber 22 is sealed A first sealing block 21 is slidably arranged, and the first sealing block 21 is welded to the sleeve 2. The first sealing block 21 and the upper end wall of the first buffer chamber 22 are connected by a plurality of first springs 220, and the lower end surface of the first housing cover 20 is welded. There is a limit ring 201 snap-fitted with the limit groove 18 .

As shown in Figures 1-4, a second housing cover 23 is sheathed outside the upper side of the sleeve 2, and a side of the second housing cover 23 close to the sleeve 2 forms a second buffer chamber 24 with the sleeve 2. The second buffer chamber A second sealing block 26 is provided for sealing and sliding in the chamber 24, the second sealing block 26 is connected with the second buffer chamber 24 through the second spring 25, the second sealing block 26 is welded with the sleeve 2, and the upper end surface of the second outer casing 23 is fixed A connecting ring 27 is provided, and the upper circumference of the connecting ring 27 is provided with a plurality of threaded holes 271. The first outer casing 20 and the second outer casing 23 are arranged symmetrically by sliding up and down so that the present invention can be applied to gears of different sizes, and at the same time the present invention can be installed After arriving at the abrasive particle flow device, the power of the abrasive particles flowing out from the abrasive particle flow device can be used to form a gap between the end surface of the internal tooth gear 4 and the end surface in contact with the sheet metal part 13, so as to grind the gear end surface.

As shown in Figures 1-4, the cover 3 includes a plurality of second bolt through holes 30, an abrasive particle flow equipment feed port 31 and a second placement groove 32, and the second bolt through holes 30 are used to make the cover The cover 3 is connected with the connecting ring 27 by bolts, and the second resting groove 32 is used for installing the second sheet metal part 13 .

installation method;

S1. After inserting the outlet port 10 of the abrasive flow equipment on the base 1 into the outlet of the abrasive flow equipment, use bolts to fix the base 1 to the abrasive flow equipment, and put the first sheet metal part 13 into the After the first placement groove 12, put the internal tooth gear 4 into the upper end surface of the sheet metal part 13;

S2. Set the sleeve 2 on the internal gear 4, and make the stop ring 201 snap-connected with the stop groove 18. At this time, the outer surface of the sheet metal part 13 is squeezed by the end surface of the first housing cover 20 , the two are attached and close together to prevent the abrasive particles from flowing out from the joint between the base 1 and the lower end surface of the first housing cover 20;

S3. After the second sheet metal part 13 is installed in the second placement groove 32, the connecting ring 27 is manually lifted. At this time, the second spring 25 and the first spring 220 are stretched, so that the upper end surface of the connecting ring 27 is in contact with the cover. After the lower end surface of the cover 3 is attached, bolts are used to connect the cover 3 and the connecting ring 27 together. At this time, the device on the side of the recovery material port of the abrasive flow equipment is lowered to the ground, and the interface 31 of the abrasive flow equipment feeding port is inserted into the abrasive flow equipment. The abrasive flow equipment can be operated at a certain distance from the recovery port of the granular flow equipment.

working principle;

After the abrasive particle flow equipment is in operation, the abrasive particles enter the internal gear 4 from the outlet interface 10 of the abrasive particle flow equipment, and the burrs on the surface of the internal teeth 40 of the gear are polished and deburred by flowing, and a part of them directly enters the grinding wheel. In the feed port 31 of the granular flow equipment, another part flows out from the hydraulic hole 41 and removes the burrs in the hydraulic hole 41 by grinding and deburring, and generates a certain rotational force on the internal gear 4. The abrasive particles in this part continue to After the upper side sheet metal part 13 is lifted by upward movement, the jacking cover 3 drives the connecting ring 27 to move upward so that a certain gap is formed between the upper end surface of the internal tooth gear 4 and the sheet metal part 13, and then the hydraulic pressure hole 41 is opened. The outflowing abrasive grains flow from the volute groove 15 to the interface 31 of the abrasive grain flow equipment feeder, and grind the burrs on the upper end surface of the internal tooth gear 4, and use the gap generated by the jacking force to make the abrasive grains flowing out from the hydraulic hole 41 The rotational force generated by the grains on the internal gear 4 drives the internal gear 4 to rotate, making the upper end surface and the outer surface of the internal gear 4 rub against the abrasive grains, which strengthens the effect of the abrasive grains on burrs, and at the same time can clean the internal gears. 4 Repair the indentation caused by clamping during the processing of the outer surface. When the abrasive flow on the upper side of the interface 31 at the feed point of the abrasive flow equipment collects more abrasive particles, the abrasive flow equipment starts in reverse to make the abrasive flow The particles flow from the interface 31 of the abrasive flow equipment inlet to the interface 10 of the outlet of the abrasive flow equipment. In this way, the burrs on the lower end surface of the internal gear 4 are polished and removed. Repeated operations can make the internal gear Fully remove the burrs at the internal teeth 40 and hydraulic holes 41 of the gear on 4, remove the burrs on the upper and lower end surfaces and the outer surface of the internal gear 4 at the same time, and repair the scratches and indentations on the internal gear 4 and remove.

Other parts in the present invention are prior art so will not repeat them here.

Claims

A device for refining the surface of internally toothed gears, characterized in that it includes a base (1); the base (1) is fixedly connected to abrasive flow equipment, and the base (1) is provided with a Material interface (10), the base (1) is detachably connected with a sleeve (2) for wrapping the internal gear, and the sleeve (2) is detachably connected with a cover (3) , the cover (3) is in sliding and sealing connection with the abrasive flow equipment, and the cover (3) is provided with an interface (31) with the feeding place of the abrasive flow equipment, when the base (1), the sleeve After (2) and the cover (3) are connected and installed to the abrasive flow equipment, the tooth surface burrs and inner hole burrs of the internal gear can be removed, and scratches on the surface of the internal gear can be repaired at the same time.
A device for refining the surface of internal gears according to claim 1, characterized in that: the upper circumference of the base (1) is uniformly provided with a plurality of first bolt holes for connecting with abrasive flow equipment (11), the upper end surface of the base (1) is provided with a first placement groove (12), the first placement groove (12) is used for installing sheet metal parts (13), and the upper end surface of the base (1) A positioning groove (16) is also provided, and a rubber sleeve (17) is filled in the positioning groove (16). The diameter of the positioning groove (16) is greater than the diameter of the first positioning groove (12), and the rubber sleeve (17) is provided with a limit groove (18) for fastening with the sleeve (2).
A surface refinement treatment device for internal gears according to claim 2, characterized in that: the sheet metal part (13) is formed into a "U" shape by die-casting, and the upper end surface of the bottom of the sheet metal part (13) is A volute groove (15) is provided for the passage of abrasive grains, the side of the sheet metal part (13) can be deformed after extrusion, and the upper end surface of the sheet metal part (13) is used to place the internal gear 4.
A device for refining the surface of internal gears according to claim 3, characterized in that: the internal circumference of the internal gear (4) is uniformly provided with a plurality of gear internal teeth (40), each of the gears One end surface of the internal teeth (40) is provided with a hydraulic hole (41) communicating with the outside world.
A surface refinement treatment device for internal gears according to claim 1, characterized in that: a first housing cover (20) is slidably sleeved outside the lower side of the sleeve (2), and the first housing A first buffer cavity (22) is formed between the cover (20) and the sleeve (2), and a first sealing block (21) is provided for sealing and sliding in the first buffer cavity (22), and the first sealing block (21) is The block (21) is welded to the sleeve (2), the first sealing block (21) is connected to the upper end wall of the first buffer chamber (22) through a plurality of first springs (220), and the first A limit ring (201) is welded on the lower end surface of the housing cover (20) and snap-fitted with the limit groove (18).
A surface refinement treatment device for internal gears according to claim 5, characterized in that: a second housing (23) is sheathed on the upper side of the sleeve (2), and the second housing (23) A side close to the sleeve (2) and the sleeve (2) form a second buffer cavity (24), and a second sealing block ( 26), the second sealing block (26) is connected to the second buffer chamber (24) through a second spring (25), and the second sealing block (26) is welded to the sleeve (2), A connecting ring (27) is fixedly arranged on the upper end surface of the second housing cover (23), and a plurality of threaded holes (271) are arranged on the upper circumference of the connecting ring (27).
A surface refinement treatment device for internal gears according to claim 1, characterized in that: the cover (3) includes a plurality of second bolt through holes (30), abrasive particle flow equipment feeding interface (31) and the second settling groove (32), the second bolt through hole (30) is used to make the cover (3) and the connecting ring (27) bolted, the second settling groove (32) Used to install the second said sheet metal part (13) inside.