CN214004758U

CN214004758U - Rolling device for hob

Info

Publication number: CN214004758U
Application number: CN202022486465.6U
Authority: CN
Inventors: 刘玉国
Original assignee: Shengwang Auto Parts Kunshan Co ltd
Current assignee: Shengwang Auto Parts Kunshan Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-08-20
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses a rolling press device for hobbing cutter, include: the cutter handle, the connecting block and the roller; the connecting blocks are arranged at one end of the cutter handle, grooves are formed among the connecting blocks, and connecting holes are formed in the connecting blocks; the roller is connected with the connecting block through a connecting shaft, and the connecting shaft is inserted into a connecting hole of the connecting block; the idler wheel comprises a wheel body, a positioning ring and a limiting ring, the positioning ring is sleeved on the connecting shaft, and the positioning ring is connected with the connecting shaft through a fastening nut; the limiting ring is arranged on the inner wall of the wheel body and is connected with the positioning ring in a clamping and embedding manner; the connecting shaft is connected with the knife handle through a spring, one end of the spring is connected to the connecting shaft, and the other end of the spring is connected to the knife handle. In this way, the utility model discloses can reach higher processing requirement to reduce the surface casting defect and the cutting process appearance defect that exist in the processing production, reduce surface sword line, reduce harmfully and scrap, reduction in production cost.

Description

Rolling device for hob

Technical Field

The utility model relates to a hobbing cutter technical field especially relates to a rolling press device for hobbing cutter.

Background

In recent years, with the rapid development of the automobile industry, the market potential of the aluminum alloy hub is gradually shown, the demand is continuously expanded, and the aluminum alloy hub industry is well opportunistic for the great development. At present, the domestic aluminum alloy wheel hub is manufactured by adopting a low-pressure casting process with lower cost, which accounts for more than 80 percent of the total yield. In the aspect of processing the aluminum alloy hub, a numerical control machine tool and a high-precision automatic cutting processing system are generally adopted, and a hard alloy blade is used for cutting the aluminum alloy hub.

After traditional cutting machining, low-pressure casting defects of the low-pressure casting hub are exposed on the machining surface of the hub, such as pinholes, shrinkage cavities and the like, so that the production cost is increased; the aluminum alloy hub can generate knife lines after being machined by a hard blade in a traditional manner, so that part of the roughness can not well meet the requirements of customers.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a rolling press device for hobbing cutter, can reach higher processing requirement, reduces the surface casting defect and the cutting process appearance defect that exist in the processing production.

In order to achieve the above object, the technical solution of the present invention is:

a rolling apparatus for a hob comprising: the cutter handle, the connecting block and the roller; the connecting blocks are arranged at one end of the cutter handle, grooves are formed among the connecting blocks, and connecting holes are formed in the connecting blocks; the roller is connected with the connecting block through a connecting shaft, and the connecting shaft is inserted into a connecting hole of the connecting block; the idler wheel comprises a wheel body, a positioning ring and a limiting ring, the positioning ring is sleeved on the connecting shaft, and the positioning ring is connected with the connecting shaft through a fastening nut; the limiting ring is arranged on the inner wall of the wheel body and is connected with the positioning ring in a clamping and embedding manner; the connecting shaft is connected with the knife handle through a spring, one end of the spring is connected to the connecting shaft, and the other end of the spring is connected to the knife handle.

Preferably, the device also comprises a turntable, the turntable is arranged on the tool handle, the connecting block is arranged on the turntable, and the connecting block is connected with the tool handle through the turntable.

Preferably, the turntable is provided with scale marks.

Preferably, the turntable is detachably connected with the tool shank through a bolt.

Preferably, the turntable is connected with the cutter handle through a rotating shaft, the turntable is connected with a motor, and the motor drives the rotating shaft to rotate.

Preferably, the outer ring of the roller is provided with a layer of diamond particles.

Preferably, the connecting hole is a waist-shaped hole.

Preferably, the limiting ring is provided with a clamping groove, and the positioning ring is provided with a clamping block matched with the clamping groove.

Preferably, the positioning ring is provided with a clamping groove, and the limiting ring is provided with a clamping block matched with the clamping groove.

Preferably, the tool shank is provided with a mounting hole.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model has the following beneficial effect:

the utility model provides a rolling press device for hobbing cutter rolls, rolls press aluminum alloy wheel hub machined surface through the gyro wheel, utilizes aluminum alloy material's compliance, makes aluminum alloy wheel hub machined surface tissue denser, can reach higher processing requirement to reduce the surface casting defect and the cutting process appearance defect that exist in the processing production, reduce surperficial sword line, reduce badly with scrap, reduction in production cost.

Drawings

Fig. 1 is a schematic structural diagram of a rolling device for a hob according to the present invention.

Fig. 2 is a schematic structural view of another angle of the rolling device for the hob of the present invention.

Fig. 3 is a schematic structural diagram of the roller in the rolling device for hob of the present invention.

Description of reference numerals:

the tool comprises a tool shank 1, a connecting block 2, a connecting shaft 3, a roller 4, a wheel body 41, a positioning ring 42, a clamping block 421, a limiting ring 43, a clamping groove 431, a fastening nut 44, a rotary table 5, a workpiece 6, a hard alloy blade 7 and a machine tool 8.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the drawings, a rolling apparatus for a hob includes: handle of a knife 1, connecting block 2 and gyro wheel 4. The tool shank 1 is a connecting part of the rolling device and the processing machine tool 8, the tool shank 1 can be directly installed on the processing machine tool 8, and in order to facilitate installation, a mounting hole can be formed in the tool shank 1. The tool shank 1 is made of titanium alloy 20CrMnTi, and is wear-resistant and durable. The hardness of the knife handle is 58-60 degrees, and the precision is 0.005 mm. The clamping part is completely provided with 1mm deep stripes, so that the friction force of the clamping part can be increased, the clamping part can be uniformly deformed, and the clamping part has unique strong clamping force and stable jumping and precision. The knife handle 1 is characterized in that: the design of thickening of clamping part improves the rigidity, prevents to vibrate. The clamping force is strong, and the rolling cannot be loosened, the vibration bounce is small, the precision and the holding strength are strong.

The connecting block 2 is arranged at one end of the tool shank 1, namely the connecting block 2 is arranged at the free end of the tool shank 1. Be provided with the recess between connecting block 2, this recess is used for placing gyro wheel 4, is provided with the connecting hole on connecting block 2. The roller 4 is connected with the connecting block 2 through the connecting shaft 3, and the connecting shaft 3 is inserted in the connecting hole of the connecting block 2. The outer ring of the roller 4 is provided with a layer of diamond particles, the diamond particles are in contact with the workpiece 6, and the workpiece 6 is rolled through the roller 4.

The roller 4 comprises a wheel body 41, a positioning ring 42 and a limiting ring 43, the positioning ring 42 is sleeved on the connecting shaft 3, and the positioning ring 42 is connected with the connecting shaft 3 through a fastening nut 44. The positioning ring 42 is sleeved on the connecting shaft 3, and the fastening nut 44 is sleeved on the connecting shaft 3 and screwed down, so that the positioning ring 42 is tightly attached to the wheel body 41, and the stability of the roller 4 is improved.

The wheel body 41 is formed by combining a hardened and highly polished steel diamond roller and a bearing, and the outer diameter, the conical surface, the end surface, the R surface and the like of the workpiece 6 can be widely machined by changing the shape of the roller 4. The steel diamond roller generates little heat in the rolling process, can reduce burning and cracks on the surface of the workpiece 6, and reduces the abrasion and energy consumption of equipment. The steel diamond roller has high wear resistance, the size change of the cutter is small, and good rolling quality and rolling precision can be obtained. The tool has long service life, low comprehensive cost and lower rolling cost of each workpiece 6.

Spacing ring 43 sets up on the inner wall of wheel body 41, and spacing ring 43 plays limiting displacement to holding ring 42, can effectively improve holding ring 42's steadiness, further improves gyro wheel 4's stability. The limit ring 43 is connected with the positioning ring 42 in a clamping and embedding manner, a clamping groove 431 can be arranged on the limit ring 43, and a clamping block 421 matched with the clamping groove 431 is arranged on the positioning ring 42; or a clamping groove 431 may be provided on the positioning ring 42, and a fixture block 421 adapted to the clamping groove 431 is provided on the limiting ring 43. The fixture block 421 and the fixture groove 431 are matched to further improve the stability of the positioning ring 42, and on the other hand, the positioning ring 42 can be conveniently and accurately embedded into the limiting ring 43, so that the positioning ring and the limiting ring are tightly connected.

The connecting shaft 3 is connected with the knife handle 1 through a spring, one end of the spring is connected to the connecting shaft 3, and the other end of the spring is connected to the knife handle 1. When the roller 4 is in the rolling process, the surface of the workpiece 6 is not smooth, so that the roller 4 can be always tightly attached to the surface of the workpiece 6 through the spring. During the process of spring expansion, the connecting shaft 3 can slide in the connecting hole of the connecting block 2, so that the distance from the roller 4 to the workpiece 6 is changed. Therefore, the connecting hole can be a waist-shaped hole, so that a certain sliding stroke can be conveniently arranged in the connecting hole of the connecting shaft 3 connecting block 2.

The load of the spring can be changed by adjusting the parameters of the machine tool 8, and the rolling degree can be adjusted by changing the extension and contraction of the spring. High-quality carbon steel wire is adopted to compress the spring and is strengthened by lead isothermal quenching and cold drawing. It has low plasticity and strong elasticity. The anti-strain capacity is strong, so that the appearance defects caused by vibration reduction in the rolling process of the cutter are reduced.

The rolling device for the hob further comprises a turntable 5, the turntable 5 is arranged on the hob handle 1, the connecting block 2 is arranged on the turntable 5, and the connecting block 2 is connected with the hob handle 1 through the turntable 5. The angle between the roller 4 and the workpiece 6 is changed by the rotary disk 5, so that the roller 4 can be always tightly attached to the surface of the workpiece 6 during rolling. In order to facilitate the understanding and adjustment of the angle between the roller 4 and the workpiece 6, the turntable 5 is provided with scale marks.

The rotary table 5 is detachably connected with the cutter handle 1 through a bolt, when the angle of the roller 4 needs to be changed, the rotary table 5 can be detached from the cutter handle 1 through the bolt, and the rotary table 5 is installed on the cutter handle 1 after the rotary table is rotated to a proper angle. The rotary table 5 and the tool handle 1 can also be connected through a rotary shaft, the rotary table 5 is connected with a motor, the motor drives the rotary shaft to rotate, and the rotary shaft drives the rotary table 5 to rotate, so that the angle between the roller 4 and the workpiece 6 can be adjusted.

The rotary table 5 can be adjusted by 90 degrees, rolling areas of different positions and different angles of the workpiece 6 are met, an accurate dial is provided, and the adjustment is simple and convenient. The material of the rotary table 5 is cobalt-based alloy, and the hard alloy can resist various types of abrasion, corrosion and high-temperature oxidation, so that the corrosion of cutting fluid to the dial and the abrasion in the machining process in the using process are reduced.

In the actual rolling process, the hub is clamped and fixed on a machine tool 8, and the hub is cut by using the hard alloy blade 7 to reach a predetermined size. And selecting a proper radius of the roller 4 according to the defect position, sleeving the positioning ring 42 on the connecting shaft 3 to enable the fixture block 421 to be opposite to the clamping groove 431, and then clamping and connecting the positioning ring 42 and the limiting ring 43. When the roller 4 is detached, the spring can be replaced, and springs with different specifications are selected. And adjusting the angle of the turntable 5 according to the processing route, so that the hob is not interfered in the rolling process, and the hob can be adjusted after the bolt is detached. And clamping the tool shank 1 on a machine tool 8, and setting the tool. The roller 4 carries out rolling processing on the defects of the wheel hub, relevant parameters can be adjusted according to the extrusion effect, and the standard is set and put into use.

By means of which a bright, smooth, tough surface is formed on the workpiece 6, which hardened, satinized surface has a bearing capacity which is stronger than that obtained by means of grinding; its advantages are high speed, low cost and high quality. After the roller 4 is contacted with the cutting processing surface in the rolling area, the pressure is gradually increased, the contact pressure exceeds the yield point of the material in the plastic deformation area, and the local plastic deformation is generated. In the actual rolling process, the roller 4 continuously and repeatedly performs the above operations to smooth the surface of the workpiece 6 so that the surface roughness of Ra 0.02 to 0.8um can be achieved.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. A rolling device for a hob, comprising: the cutter handle, the connecting block and the roller; the connecting blocks are arranged at one end of the cutter handle, grooves are formed among the connecting blocks, and connecting holes are formed in the connecting blocks; the roller is connected with the connecting block through a connecting shaft, and the connecting shaft is inserted into a connecting hole of the connecting block; the idler wheel comprises a wheel body, a positioning ring and a limiting ring, the positioning ring is sleeved on the connecting shaft, and the positioning ring is connected with the connecting shaft through a fastening nut; the limiting ring is arranged on the inner wall of the wheel body and is connected with the positioning ring in a clamping and embedding manner; the connecting shaft is connected with the knife handle through a spring, one end of the spring is connected to the connecting shaft, and the other end of the spring is connected to the knife handle.

2. The rolling device for roller cutters as claimed in claim 1, wherein: the rotary table is arranged on the tool handle, the connecting block is arranged on the rotary table, and the connecting block is connected with the tool handle through the rotary table.

3. The rolling device for roller cutters as claimed in claim 2, wherein: and the turntable is provided with scale marks.

4. The rolling device for roller cutters as claimed in claim 2, wherein: the rotary table is detachably connected with the knife handle through a bolt.

5. The rolling device for roller cutters as claimed in claim 2, wherein: the rotary table is connected with the tool shank through a rotary shaft, the rotary table is connected with a motor, and the motor drives the rotary shaft to rotate.

6. The rolling device for roller cutters as claimed in claim 1, wherein: a layer of diamond particles is arranged on the outer ring of the roller.

7. The rolling device for roller cutters as claimed in claim 1, wherein: the connecting hole is a waist-shaped hole.

8. The rolling device for roller cutters as claimed in claim 1, wherein: the limiting ring is provided with a clamping groove, and the positioning ring is provided with a clamping block matched with the clamping groove.

9. The rolling device for roller cutters as claimed in claim 1, wherein: the locating ring is provided with a clamping groove, and the limiting ring is provided with a clamping block matched with the clamping groove.

10. The rolling device for roller cutters as claimed in claim 1, wherein: the knife handle is provided with a mounting hole.