CN110757327A

CN110757327A - Polishing device

Info

Publication number: CN110757327A
Application number: CN201911018968.6A
Authority: CN
Inventors: 李桃丰; 高火金; 彭强; 李季节; 孟祥忠
Original assignee: Xinxiang Aviation Industry Group Co Ltd
Current assignee: Xinxiang Aviation Industry Group Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-02-07

Abstract

The invention relates to the technical field of polishing equipment, in particular to a polishing device, which comprises: a cutter bar; the connecting rod penetrates through the cutter bar, one end of the connecting rod, which penetrates out of the cutter bar, is provided with a stopping structure, and the stopping structure is in stopping fit with the side surface of the cutter bar; the fixed seat is used for fixing polishing materials and is fixedly connected with the other end of the connecting rod, which penetrates out of the cutter bar; the spring is sleeved outside the connecting rod, and the spring top is arranged between the cutter bar and the fixed seat; the guide rod is in guide sliding fit with the cutter bar, and one end of the guide rod is fixedly connected with the fixed seat. Has the advantages that: the guide bar is special with cutter arbor direction sliding fit, and the connecting rod just need not to cooperate with the cutter arbor direction, and the connecting rod as long as be responsible for connect the fixing base to supply the spring suit can, need not to have with cutter arbor direction complex length, therefore the connecting rod can set up some short, just so can reduce burnishing device's horizontal size, thereby make burnishing device can process the less part of hole, enlarged burnishing device's application scope.

Description

Polishing device

Technical Field

The invention relates to the technical field of polishing equipment, in particular to a polishing device.

Background

The cylindrical surface of an inner hole of some parts is a piston motion matching surface, the sealing performance is good, the friction force is small, and the requirements of the cylindrical surface and the surface roughness of the inner hole are very important for the product performance. At present, the requirement of cylindricity can basically meet the quality requirement by improving the clamping mode and the production conditions of lathe tool material, geometric parameters and the like; however, the inner cylindrical surface has a poor surface roughness value due to hard anodization, and thus needs to be improved by "polishing".

To this, chinese utility model patent that the publication number is CN201154456Y discloses a circular cone hole honing tool, and this instrument includes cutter arbor, spring axle, oilstone support, oilstone, and the shoulder hole has radially been seted up to the cutter arbor, and the spring suit is epaxial at the spring, and spring axle and spring mounting are in the shoulder hole, and the one end that the cutter arbor was worn out to the spring axle is spacing on the cutter arbor through the nut, the other end riveting has the oilstone to hold in the palm, and the oilstone is adorned admittedly in the oilstone holds in the palm. When the pressing device is used, the pressing force can be automatically adjusted by utilizing the compressibility of the spring, and the requirements on machining precision and surface roughness are met.

The spring shaft of the honing tool is in guide sliding fit with the cutter bar and is sleeved with the spring to realize floating polishing, so that the length of the spring shaft is relatively long, the honing tool is large in transverse size, only parts with large inner holes can be machined, the honing tool cannot be applied to parts with small inner holes, and the application range is limited.

Disclosure of Invention

The invention aims to provide a polishing device which can be more widely applied.

In order to achieve the purpose, the polishing device adopts the following technical scheme:

a polishing apparatus comprising:

a cutter bar;

the connecting rod penetrates through the cutter bar, and a stopping structure is arranged at one end of the connecting rod, which penetrates out of the cutter bar, and is used for stopping and matching with the side surface of the cutter bar;

the fixed seat is used for fixing polishing materials and is fixedly connected with the other end of the connecting rod, which penetrates out of the cutter bar;

the spring is sleeved outside the connecting rod and is jacked between the cutter bar and the fixed seat, or the spring is jacked between the cutter bar and the connecting rod, so that the fixed seat can float relative to the cutter bar;

the polishing apparatus further includes:

the guide rod is in guide sliding fit with the cutter bar, and one end of the guide rod is fixedly connected with the fixed seat so as to guide the floating of the fixed seat.

The beneficial effects of the above technical scheme are that: burnishing device still includes the guide bar that sets up in addition, the one end and the fixing base fixed connection of guide bar, the guide bar is special with cutter arbor direction sliding fit, thereby can lead to the floating of fixing base, like this to the connecting rod, it just need not with cutter arbor direction sliding fit, direction sliding fit's function is responsible for by the guide bar, the connecting rod is as long as be responsible for connecting the fixing base, and supply the spring suit can, need not to have with cutter arbor direction complex length, consequently, the connecting rod can set up some short, just so can reduce burnishing device's transverse dimension, thereby make burnishing device can process the less part of hole, burnishing device's application scope has been enlarged.

Furthermore, in order to reduce the sliding friction force between the guide rod and the cutter bar and ensure that the fixed seat floats smoothly, the surface of the guide rod is provided with a groove for containing lubricating oil.

Further, in order to improve the lubricating effect, the groove is spiral.

Furthermore, in order to facilitate the configuration of the guide rods and ensure the guide effect, the guide rods are cylindrical rods, the number of the guide rods is at least two, and the guide rods are uniformly distributed around the connecting rod.

Furthermore, in order to facilitate installation of the spring, the cutter bar is fully utilized, the transverse size of the polishing device is reduced, a stepped hole for the connecting rod to penetrate through is formed in the cutter bar, the spring is installed in the large hole section of the stepped hole, and one end of the spring is pressed against the stepped surface of the stepped hole.

Furthermore, in order to facilitate the arrangement of the connecting rod, the connecting rod is a connecting bolt, and the stop structure is formed by a bolt head of the connecting bolt.

Further, for the installation and the fixed of convenient polishing material, the fixing base is the U-shaped, and the fixing base includes two lateral walls and connects the connecting wall of two lateral walls, connecting rod and guide bar all with connecting wall fixed connection, install the puller bolt that is used for pressing from both sides tight polishing material on at least one of two lateral walls.

Furthermore, in order to conveniently clamp the polishing material, the polishing device further comprises a base plate arranged between the two side walls of the fixing seat, the base plate is used for clamping the polishing material, and the puller bolt is tightly propped against the base plate.

Further, in order to improve the polishing efficiency, the polishing device further comprises a polishing head, the polishing head is provided with a tightening part which is used for being arranged between the two side walls of the fixing seat and tightened by the tightening bolt, the polishing head is further provided with a wrapping part used for wrapping polishing materials outside, and the wrapping part is provided with an arc-shaped outer surface which is used for being matched with the inner hole wall of the part to be polished.

Furthermore, in order to facilitate assembly and ensure the fixing effect of the polishing material, a pressing plate is mounted on the polishing head through a fastening bolt, the pressing plate is used for pressing the polishing material wrapped outside the wrapping part onto the polishing head, and mutually-meshed meshing teeth are respectively arranged on the combining surfaces of the pressing plate and the polishing head.

Drawings

FIG. 1 is a structural view of a polishing apparatus of the present invention when a polishing material is not mounted;

FIG. 2 is a view showing the configuration of the polishing apparatus of the present invention after the polishing head is mounted (rough polishing);

FIG. 3 is a side view of the polishing head structure of FIG. 2;

FIG. 4 is a structural view of the polishing apparatus of FIG. 1 after installation of a polishing cloth (finish polishing);

FIG. 5 is a block diagram of the body of the knife bar of FIGS. 1 and 2;

FIG. 6 is a block diagram of the mounting bracket of FIGS. 1 and 2;

FIG. 7 is a side view of FIG. 6;

fig. 8 is a structural view of the guide bar of fig. 1 and 2.

In the figure: 10-a knife handle; 20-locking the nut; 30-a tool bar body; 31-a threaded segment; 32-a screw-on portion; 33-a pilot hole; 34-a stepped hole; 40-a guide bar; 41-screwing section; 42-a guide section; 43-a connecting segment; 44-a trench; 50-a spring; 60-connecting bolts; 70-a fixed seat; 71-tightening the bolt; 72-a backing plate; 73-polishing cloth; 74-a threaded hole; 75-mounting holes; 80-a polishing head; 81-wrapping; 82-a first platen; 83-first fastening bolt; 84-a second platen; 85-a second fastening bolt; 86-sand paper; 87-tightening part.

Detailed Description

One embodiment of the burnishing apparatus of the present invention is shown in fig. 1 and comprises a tool holder comprising a tool shank 10 and a tool holder body 30, the tool shank 10 being secured to a machine tool in use. The structure of the tool bar body 30 is as shown in fig. 5, the tool bar body 30 includes a threaded section 31 and a screwing section 32, the tool bar body 30 can be screwed on the tool holder 10 through the screwing section 32, and in order to prevent loosening, the threaded section 31 is connected with the lock nut 20.

The tool bar body 30 is provided with a connecting rod in a penetrating manner, the connecting rod in this embodiment is a connecting bolt 60, the tool bar body 30 is provided with a stepped hole 34 for the connecting bolt 60 to penetrate, and a bolt head of the connecting bolt 60 is located outside the tool bar body 30 to form a stop structure in stop fit with a side surface of the tool bar body 30, so that the connecting bolt 60 is limited.

The end of the connecting bolt 60 penetrates through the tool bar body 30 and is in threaded connection with the fixed seat 70, the spring 50 is sleeved outside the connecting bolt 60, the spring 50 is installed in the large hole section of the stepped hole 34, one end of the spring is pressed against the stepped surface of the stepped hole 34, and the other end of the spring is pressed against the fixed seat 70, so that the fixed seat 70 can float relative to the tool bar body 30.

The tool holder body 30 is also fitted with two guide rods 40 in a guided sliding manner, for which purpose two guide bores 33 are provided in the tool holder body 30. The guide rods 40 are used for guiding the floating of the fixing seat 70, and the two guide rods 40 and the connecting bolt 60 are arranged in a row and are symmetrically arranged relative to the connecting bolt 60. As shown in fig. 8, the guide rod 40 includes a screwing section 41, a guiding section 42 and a connecting section 43 in sequence, wherein the connecting section 43 is an external thread section for screwing with the fixing base 70, and for this purpose, a plurality of threaded holes 74 are provided on the fixing base 70 to facilitate the screwing with the guide rod 40 and the connecting bolt 60.

The guide section 42 is a cylindrical rod, a groove 44 for accommodating lubricating oil is arranged on the outer cylindrical surface of the guide section 42, and the groove 44 is spiral, so that the sliding friction force between the guide section 42 and the guide hole 33 is small enough, and the smooth floating of the fixing seat 70 is ensured.

Referring to fig. 6 and 7, the fixing base 70 is U-shaped, and includes two side walls and a connecting wall connecting the two side walls, three threaded holes 74 are provided on the connecting wall, and referring to fig. 4, a plurality of mounting holes 75 for mounting the tightening bolts 71 are provided on each of the two side walls, and obviously, the mounting holes 75 are threaded holes.

When the polishing device is used, two use modes are available, one mode is rough polishing, as shown in fig. 2 and fig. 3, a polishing head 80 is required to be installed on the fixing seat 70, the polishing head 80 is provided with a tightening part 87 which is arranged between two side walls of the fixing seat 70 and is tightened by the tightening bolt 71, the polishing head 80 is further provided with a wrapping part 81 which is used for wrapping abrasive paper 86 (only part of the abrasive paper is shown in fig. 3) outside, and the wrapping part 81 is provided with an arc-shaped outer surface which is matched with the inner hole wall of the part to be polished, so that the contact area between the abrasive paper 86 and the inner hole wall of the part to be polished can be increased, and the polishing efficiency is improved.

A pressing plate is mounted on the polishing head 80 via a fastening bolt, and the pressing plate is used for pressing both ends of the sandpaper 86, thereby pressing the sandpaper 86 against the polishing head 80. The two sets of fastening bolts and the two sets of pressure plates comprise a first pressure plate 82, a first fastening bolt 83, a second pressure plate 84 and a second fastening bolt 85, the first pressure plate 82 is fixed on the polishing head 80 through the three first fastening bolts 83, the second pressure plate 84 is fixed on the polishing head 80 through the three second fastening bolts 85, and the two corresponding first fastening bolts and the two corresponding second fastening bolts are in threaded connection with the same threaded hole in the polishing head 80.

In addition, the opposite joint surfaces of each pressure plate and the polishing head are respectively provided with mutually meshed meshing teeth, so that the abrasive paper 86 is clamped at the positions of the meshing teeth, and the fixing effect of the abrasive paper can be ensured.

The second usage of the polishing device in the present invention is fine polishing, as shown in fig. 3, a pad 72 is required to be disposed between two side walls of the fixing base 70 during fine polishing, in this embodiment, three pads 72 are provided, the polishing cloth 73 bypasses the middle pad and is clamped by the pads on two sides, and the tightening bolts 71 are respectively tightened against the pads 72.

When the polishing device is used, firstly rough polishing and then fine polishing or direct fine polishing can be selected according to the precision of the inner hole wall of a part to be polished, so that the polishing efficiency is ensured.

The polishing device is specially provided with the guide rod, the guide rod is used for guiding, a connecting bolt is not required to be in guide sliding fit with the cutter bar body 30, and the connecting bolt is also not required to be provided with a guide matching section, so that the connecting bolt is not required to be too long, the transverse size of the polishing device can be reduced, parts with smaller inner holes can be machined by the polishing device, and the application range of the polishing device is expanded.

In other embodiments of the polishing device, the polishing head may not be connected to the pressure plate, for example, the sandpaper is wrapped outside the wrapping portion, and the tightening bolt directly presses against the sandpaper to fix the sandpaper.

In other embodiments of the polishing apparatus, the polishing material wrapped outside the wrapping portion may be polishing cloth such as scouring cloth, wool cloth, velvet, or the like, instead of sandpaper.

In other embodiments of the polishing apparatus, the polishing apparatus does not comprise a polishing head, for example only by means of clamping the polishing material with a backing plate, but the polishing apparatus may also comprise no backing plate and only by means of using a polishing head.

In other embodiments of the polishing apparatus, the polishing material sandwiched within the pad may also be a sandpaper strip or a honing stone.

In other embodiments of the polishing apparatus, there may be only two pads between which the polishing material is disposed, or there may be only one pad, and the polishing material may be clamped by using the sidewall of the fixing base in cooperation with the pad.

In other embodiments of the polishing apparatus, the polishing material may be directly clamped by the tightening bolt without providing the pad.

In other embodiments of the polishing apparatus, the jack bolt may be installed on only one of the side walls of the holder.

In other embodiments of the polishing apparatus, the fixing base is not U-shaped, but has a cylindrical structure with a cylindrical bottom, the connecting rod and the guide rod are fixedly connected with the cylindrical bottom, and the tightening bolt is mounted on the side wall of the cylindrical body.

In other embodiments of the polishing apparatus, the connecting rod may not be a connecting bolt, such as a connecting screw, and a nut may be installed on the connecting screw to form a stopping structure, or the connecting rod is a common polish rod with a large end at one end, and the large end forms the stopping structure at the other end, and the other end is fixed to the fixing base by interference fit or welding.

In other embodiments of the polishing device, the tool holder body may not be provided with a stepped hole, but rather with a through hole of equal diameter, and one end of the spring may press against the end face of the tool holder body.

In other embodiments of the polishing apparatus, there may be three or more guide rods, but the guide rods are circumferentially and uniformly distributed around the connecting rod.

In other embodiments of the polishing apparatus, the grooves may also be straight grooves parallel to the axis of the guide rod instead of being spiral-shaped.

In other embodiments of the polishing apparatus, the surface of the guide bar is not provided with grooves.

In other embodiments of the polishing apparatus, the guide rod may not include the screw section and the connecting section, but may be formed by only one cylindrical rod, and the guide rod may be fixed to the fixing base by interference fit or welding.

In other embodiments of the polishing apparatus, a flange or step may be provided on the surface of the connecting rod, with a spring loaded between the body of the tool holder and the connecting rod.

In other embodiments of the polishing device, the tool bar is only composed of the tool bar body, and does not include the tool shank, and the tool bar body is long enough to be directly fixed on the machine tool.

Claims

1. A polishing apparatus comprising:

a cutter bar;

characterized in that, the polishing device further comprises:

2. A polishing system according to claim 1 in which the surface of the guide rod is provided with a channel for receiving lubricating oil.

3. A polishing system according to claim 2 in which the grooves are helical.

4. A polishing apparatus according to any one of claims 1 to 3, wherein the guide rods are cylindrical rods, and at least two guide rods are provided, each guide rod being circumferentially and uniformly distributed around the connecting rod.

5. The polishing device as claimed in any one of claims 1 to 3, wherein the tool bar is provided with a stepped hole for the connection rod to pass through, the spring is installed in the large hole section of the stepped hole, and one end of the spring is pressed against the stepped surface of the stepped hole.

6. The polishing device as claimed in any one of claims 1 to 3, wherein the connecting rod is a connecting bolt, and the stopper structure is formed by a bolt head of the connecting bolt.

7. The polishing apparatus as set forth in any one of claims 1 to 3, wherein the holder is U-shaped, the holder comprises two side walls and a connecting wall connecting the two side walls, the connecting rod and the guide rod are fixedly connected to the connecting wall, and a tightening bolt for clamping the polishing material is mounted on at least one of the two side walls.

8. The polishing apparatus as set forth in claim 7, further comprising a pad for being disposed between both side walls of the holder, the pad being for clamping the polishing material, the tightening bolt being tightened against the pad.

9. The polishing apparatus as set forth in claim 7, wherein the polishing apparatus further comprises a polishing head having a tightening portion for being disposed between both side walls of the holder to be tightened by the tightening bolt, the polishing head further having a packing portion for packing the polishing material on the outside, the packing portion having an arcuate outer surface for matching with an inner hole wall of the member to be polished.

10. The polishing apparatus as set forth in claim 9, wherein a pressing plate for pressing the polishing material wrapped around the outer portion of the wrapping portion against the polishing head is mounted on the polishing head by means of fastening bolts, and engaging teeth engaged with each other are provided on engaging surfaces of the pressing plate and the polishing head, respectively.