CN214490180U

CN214490180U - End face grinding power head

Info

Publication number: CN214490180U
Application number: CN202023246694.7U
Authority: CN
Inventors: 吴华睦
Original assignee: Zhejiang Kiyo Gears Co ltd
Current assignee: Zhejiang Kiyo Gears Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-26
Anticipated expiration: 2030-12-29

Abstract

The utility model provides an end face grinding unit head belongs to mechanical technical field. It has solved prior art and has had the poor problem of stability. The end face grinding power head comprises a shell, a bearing seat, a main shaft, a piston rod, a tool assembly, a spring and a sealing assembly, wherein the bearing seat is fixedly connected in the shell, the main shaft penetrates through the bearing seat and is provided with a bearing between the main shaft and the piston rod, the sealing assembly is positioned between the main shaft and the piston rod and forms a closed air cavity between the main shaft, the movable rod and the sealing assembly, and the piston rod is provided with a ventilation channel. This terminal surface grinding unit head stability is high and compact structure's advantage.

Description

End face grinding power head

Technical Field

The utility model belongs to the technical field of machinery, a unit head, especially an end face grinding unit head is related to.

Background

Oil pump gear terminal surface need carry out abrasive machining to it, and traditional machining process is all adopted to current oil pump gear terminal surface, promptly: and (4) machining the end face of the oil pump gear by using a grinding machine. The machining process easily causes the burn of the end face of the gear, and has the problems of low machining efficiency and large surface roughness.

That is to say, the existing oil pump gear only can adopt the conventional excircle to do the end face and lean on the mill to process, and is inefficient, product quality is unstable, the waste product volume is big, the technology is uncontrollable, the main quality problem is difficult to reach the requirement at surface roughness, and the gear surface has obvious secondary burn in addition, leads to the product to scrap easily.

When the circular table grinding machine is used for machining, the circular table grinding machine is of a horizontal shaft type, a workpiece is arranged on the lower grinding wheel, the grinding wheel grains are adhered to a product during grinding to cause scratch risks, the product quality is unstable, and the efficiency is lower than that of an external grinding machine.

SUMMERY OF THE UTILITY MODEL

The first purpose of the utility model is to provide a high and compact structure's of stability face grinding unit head to the above-mentioned problem that prior art exists.

This practicality can be realized through following technical scheme: the end face grinding power head is characterized by comprising a shell, a bearing seat, a main shaft, a piston rod, a tool assembly, a spring and a sealing assembly, wherein the bearing seat is fixedly connected in the shell, the main shaft penetrates through the bearing seat and a bearing is arranged between the main shaft and the bearing seat, the sealing assembly is arranged between the main shaft and the piston rod and forms a closed air cavity between the main shaft and the movable rod and the sealing assembly, a ventilation channel is arranged on the piston rod, the outer end of the ventilation channel is used for being connected with an air source, the inner end of the ventilation channel is communicated with the closed air cavity, the spring is arranged between the piston rod and the bearing seat and tends to move to the left under the elastic force action of the spring, the tool assembly is connected to the end part of the piston rod, and when the piston rod moves to the left, the tool assembly can position and clamp a workpiece positioned at the position.

The oil pump gear blank is discoid and has the through-hole that runs through in its center department, and oil pump gear blank connects in frock subassembly department. After an external air source enters the piston rod through the ventilation channel, the air pressure in the closed air cavity is increased under the action of the sealing assembly, and the piston rod moves leftwards under the action of the air pressure. The piston rod moves the back frock subassembly and firmly fixes a position the centre gripping with oil pump gear. Of course, the main shaft is driven to rotate continuously by external power, the power head realizes active motion in the process of end face machining operation, and the grinding wheel subjected to grinding treatment realizes feed motion. After the air source stops supplying, the piston rod is reset under the action of the elastic force of the spring.

In the end face grinding power head, a rotary joint is axially and fixedly connected to the end part of the piston rod and communicated with the outer end of the ventilation channel.

The ventilation channel can be stably connected with an external air source through the rotary joint.

In foretell end face grinding unit head, the frock subassembly is including linking firmly the cover that expands on the main shaft and linking firmly the cover that draws on the piston rod, and the above-mentioned cover that draws is cylindricly and has along the recessed guide way of its axis in its outside, and the above-mentioned cover that expands is the tube-shape and has the inflation lamella that matches with the guide way at the cover tip that expands, and above-mentioned inflation lamella inlays in guide way department, and the quantity of above-mentioned guide way is a plurality of and the equipartition is in the cover outside of drawing, and the quantity of above-mentioned inflation lamella is the same and the one-to-one setting with the guide way.

The expansion valve of the expansion sleeve is embedded in the guide groove, the guide groove is obliquely arranged, and the expansion valve is matched with the guide groove. Therefore, the expansion valve can be opened after the pull sleeve moves leftwards, the opened expansion valve is stably supported on the inner side of the oil pump gear, and the stable positioning connection of the oil pump gear at the tool assembly is ensured.

In the end face grinding power head, the number of the guide grooves is three, and the three guide grooves are uniformly distributed on the outer side of the pull sleeve.

The plurality of guide grooves and the expansion lobes corresponding to the guide grooves enable the tool assembly to stably clamp the oil pump gear.

In the end face grinding power head, the outer side of the shell is fixedly connected with a backer, and the pull sleeve and the expansion sleeve partially extend out of the backer.

After the location is connected, the oil pump gear supports and leans on the backer lateral part, and such structure can avoid oil pump gear to be connected with the contact of bloated cover, its stability of effectual improvement.

In the end face grinding power head, the sealing assembly comprises a first sealing ring and a second sealing ring which are connected between the piston rod and the main shaft, and the inner end of the ventilation channel is located between the first sealing ring and the second sealing ring.

And a stable closed cavity can be formed between the piston rod and the main shaft under the action of the first sealing ring and the second sealing ring.

In the end face grinding power head, the shell is further fixedly connected with a driving part, the driving part is provided with a first driving wheel, the end part of the spindle is fixedly connected with a second driving wheel, and the first driving wheel is connected with the second driving wheel.

In the above end face grinding power head, the driving member is a servo motor.

Adopt ordinary cylindrical grinding equipment to carry out software upgrading, change electrical apparatus and pneumatic control chain switch and carry out safety protection discernment mistake proofing, set up two unit heads at ordinary cylindrical grinding equipment and carry out the interchange circulation, the frock locking device uses the air supply as power, realizes manual or automatic locking, clamping time is short, the precision is high, the processing beat is short, product quality has advantages such as controllable.

Compared with the prior art, the end face grinding power head can quickly clamp the oil pump gear blank, the stability and the clamping efficiency are high, and the structure is compact.

Drawings

Fig. 1 is a schematic cross-sectional structural view of the present end face grinding power head.

Fig. 2 is a schematic structural diagram of a joint of an expansion sleeve and a pull sleeve in the end face grinding power head.

In the figure, 1, a housing; 2. a bearing seat; 3. a main shaft; 4. a piston rod; 4a, a vent channel; 5. a spring; 6. a bearing; 7. sealing the air cavity; 8. a rotary joint; 9. expanding the sleeve; 9a, an expansion valve; 10. pulling the sleeve; 10a, a guide groove; 11. backing a mountain; 12. a first sealing ring; 13. a second sealing ring; 14. a drive member; 15. a first transmission wheel; 16. a second driving wheel; 17. a synchronous belt; 18. oil pump end face tooth.

Detailed Description

The technical solutions in the present embodiments will be described clearly and completely with reference to the accompanying drawings in the present embodiments, and it is to be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without any creative work belong to the protection scope of the present application.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the end face grinding power head comprises a housing 1, a bearing seat 2, a main shaft 3, a piston rod 4, a tool assembly, a spring 5 and a sealing assembly, the bearing seat 2 is fixedly connected in the shell 1, the main shaft 3 is arranged in the bearing seat 2 in a penetrating way and a bearing 6 is arranged between the bearing seat and the bearing seat, the sealing component is positioned between the main shaft 3 and the piston rod 4, and a closed air cavity 7 is formed among the main shaft 3, the movable rod 4 and the sealing component, the piston rod 4 is provided with a vent passage 4a, the outer end of the vent passage 4a is used for being connected with an air source, the inner end of the vent passage 4a is communicated with the closed air cavity 7, the spring 5 is positioned between the piston rod 4 and the bearing seat 2, and the piston rod 4 has the tendency of moving left under the action of the elastic force of the spring 5, the tool assembly is connected to the end of the piston rod 4, and when the piston rod 4 moves leftwards, the tool assembly can position and clamp a workpiece located at the position.

The end part of the piston rod 4 is axially and fixedly connected with a rotary joint 8, the rotary joint 8 is communicated with the outer end of the ventilation channel 4a, and the rotary joint 8 is used for being stably connected with an air source.

The tool assembly comprises an expansion sleeve 9 fixedly connected to the main shaft 3 and a pull sleeve 10 fixedly connected to the piston rod 4, the pull sleeve 10 is cylindrical, a guide groove 10a recessed along the axis of the pull sleeve is formed in the outer side of the pull sleeve 10, the expansion sleeve 9 is cylindrical, expansion lobes 9a matched with the guide groove 10a are formed in the end portion of the expansion sleeve 9, the expansion lobes 9a are embedded in the guide groove 10a, the guide grooves 10a are distributed in the outer side of the pull sleeve 10 in a plurality of ways, and the expansion lobes 9a are arranged in the same and one-to-one correspondence with the guide groove 10 a.

The number of the guide grooves 10a is three, and the three guide grooves 10a are uniformly distributed on the outer side of the pull sleeve 10. The outer side of the shell 1 is fixedly connected with a backer 11, and the pull sleeve 10 and the expansion sleeve 9 partially extend out of the backer 11.

The sealing assembly comprises a first sealing ring 12 and a second sealing ring 13 which are connected between the piston rod 4 and the main shaft 3, and the inner end of the vent passage 4a is positioned between the first sealing ring 12 and the second sealing ring 13.

The shell 1 is also fixedly connected with a driving part 14, the driving part 14 is provided with a first driving wheel 15, the end part of the spindle 3 is fixedly connected with a second driving wheel 16, and the first driving wheel 15 is connected with the second driving wheel 16. The drive member 14 is a servo motor.

The first driving wheel 15 and the second driving wheel 16 are both synchronous wheels, and the synchronous belts 17 are sleeved on the first driving wheel 15 and the second driving wheel 16.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not used as limitations of the present invention, and that suitable modifications and changes to the above embodiments are within the scope of the present invention as claimed.

Claims

1. The end face grinding power head is characterized by comprising a shell, a bearing seat, a main shaft, a piston rod, a tool assembly, a spring and a sealing assembly, wherein the bearing seat is fixedly connected in the shell, the main shaft is arranged in the bearing seat in a penetrating manner, a bearing is arranged between the main shaft and the bearing seat, the sealing assembly is arranged between the main shaft and the piston rod, a sealed air cavity is formed among the main shaft, a movable rod and the sealing assembly, a ventilation channel is arranged on the piston rod, the outer end of the ventilation channel is used for being connected with an air source, the inner end of the ventilation channel is communicated with the sealed air cavity, the spring is arranged between the piston rod and the bearing seat, the piston rod has the tendency of moving left under the action of the elastic force of the spring, the tool assembly is connected to the end part of the piston rod, when the piston rod moves left, the tool assembly can position and clamp a workpiece positioned at the position, and the rotary joint is fixedly connected to the end part of the piston rod in the axial direction, the rotary joint is communicated with the outer end of the ventilation channel.

2. The face grinding power head of claim 1, wherein the tool assembly comprises an expansion sleeve fixedly connected to the main shaft and a pull sleeve fixedly connected to the piston rod, the pull sleeve is cylindrical and has a guide groove recessed along an axis thereof on an outer side thereof, the expansion sleeve is cylindrical and has expansion lobes matched with the guide groove on an end portion thereof, the expansion lobes are embedded in the guide groove, the guide grooves are distributed in a plurality of ways and are uniformly distributed on the outer side of the pull sleeve, and the expansion lobes are arranged in the same number as the guide grooves in a one-to-one correspondence manner.

3. The face grinding power head of claim 2, wherein the number of the guide grooves is three, and the three guide grooves are uniformly distributed on the outer side of the pull sleeve.

4. The face grinding power head of claim 3, wherein a backer is further secured to an exterior side of the housing, and the pull sleeve and the expansion sleeve both partially extend beyond the backer.

5. The face grinding power head of claim 4, wherein the seal assembly includes a first seal ring and a second seal ring connected between the piston rod and the spindle, the inner end of the vent passage being located between the first seal ring and the second seal ring.

6. The face grinding power head of claim 5, wherein the housing further comprises a drive member attached thereto, the drive member having a first drive wheel attached thereto, the spindle end having a second drive wheel attached thereto, the first drive wheel being connected to the second drive wheel.

7. The face grinding power head of claim 6, wherein the drive member is a servo motor.