CN211361756U - Polishing device - Google Patents

Abstract

The utility model provides a grinding device, including the bed frame, the abrasive band subassembly and install the constant force transducer on the bed frame, the abrasive band subassembly includes the action wheel, driven wheelset, polish head and abrasive band, action wheel and driven wheelset rotate respectively and locate on the bed frame, polish the unsettled bed frame outside of locating of head, and polish head and be connected to the constant force transducer, the abrasive band overlaps respectively to be established at the action wheel, driven wheelset and polish overhead, the part that the head was polished to the abrasive band cover was located is used for polishing, the constant force transducer is used for responding to polish the atress condition of head and carries out corresponding flexible in order to guarantee to polish head constant. The utility model provides a grinding device through constant force sensor's setting for the grinding head can export invariable power of polishing, has increased grinding device's flexibility, has guaranteed part surface quality's uniformity, has improved the quality of polishing.

Description

Polishing device

Technical Field

The utility model belongs to the technical field of the abrasive band is polished, more specifically say, relate to a grinding device.

Background

The traditional grinding operation is completed on an abrasive belt machine, and the existing abrasive belt machines are various in types, including a table type abrasive belt machine, a vertical type abrasive belt machine, a hand-push type abrasive belt machine, a dust removal abrasive belt machine and the like. Most of the above types of belt sander are single-acting belt sanders, which structurally comprise a housing, a motor, a driving wheel, a driven wheel set and a sanding belt. The existing belt sander has a large volume and occupies a large area of a polishing operation workshop; the supporting of the belt sander is finished manually, and the tightness of the belt sander is different; the corners of the grinding pieces cannot be processed by the abrasive belt machine, and the corners are processed by special tools; in addition, the problem that the consistency of the surfaces of the parts which are polished is poor exists in the existing abrasive belt machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grinding device to there is the poor technical problem of part surface uniformity that the abrasive band machine polished among the solution prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a grinding device, its characterized in that, including bed frame, abrasive band subassembly and install in constant force sensor on the bed frame, the abrasive band subassembly includes action wheel, driven wheelset, polishes head and abrasive band, the action wheel reaches driven wheelset rotates respectively to be located on the bed frame, polish the unsettled locating of head the bed frame outside, just polish the head and be connected to constant force sensor, the abrasive band overlaps respectively the cover and establishes the action wheel, driven wheelset and polish overhead, the abrasive band cover is located polish the part of head and be used for polishing, constant force sensor is used for responding to polish the atress condition of head and carry out corresponding flexible in order to guarantee polish the head constant force.

Optionally, the constant force sensor includes an active contact flange fixed to the base frame, and an output end of the active contact flange is connected to the polishing head.

Optionally, the base frame comprises two opposite vertical plates arranged at intervals, and the constant force sensor is arranged between the two vertical plates; the grinding device comprises two abrasive belt assemblies, driving wheels, driven wheel sets, grinding heads and abrasive belts of the two abrasive belt assemblies are respectively arranged on the outer sides, opposite to the vertical plates, of the two vertical plates, and the constant force sensors are respectively connected with the two grinding heads.

Optionally, grinding device still includes the support of polishing head, the support of polishing head includes connecting axle, connecting plate and two first mounting panels, the connecting plate with the constant force transducer interval sets up, just the connecting plate is located two the same outside of riser, the connecting axle connect in constant force transducer's output with between the connecting plate, two first mounting panel is located respectively the relative both ends of connecting plate, two the polishing head is located respectively two on the connecting plate.

Optionally, the two abrasive belts are a first abrasive belt and a second abrasive belt respectively, the two polishing heads are a first polishing head and a second polishing head respectively, the width of the first abrasive belt is smaller than that of the second abrasive belt, and the outer diameter of the first polishing head is smaller than that of the second polishing head.

Optionally, the sanding device further includes two abrasive belt supporting structures, and the two abrasive belt supporting structures are respectively installed between the two vertical plates and are respectively used for supporting the two abrasive belts to a preset tension degree.

Optionally, the abrasive belt supporting structure includes a linear cylinder, a push block and a push rod, the linear cylinder is installed on the vertical plate, the push block is installed at an output end of the linear cylinder, the driven wheel set includes a first driven wheel, two ends of the push rod are respectively connected with the push block and the first driven wheel, and a pushing direction of the linear cylinder is perpendicular to an axial direction of the first driven wheel.

Optionally, the belt supporting structure further includes an oil buffer mounted on the vertical plate and configured to buffer an output force of the linear cylinder.

Optionally, an air cylinder support is connected between the two vertical plates, the two linear air cylinders are respectively mounted on the air cylinder support, an extension plate extending along the pushing direction of the linear air cylinders is arranged in the middle of the air cylinder support, an inclined plate is arranged at one end, away from the air cylinder support, of the extension plate, and each hydraulic buffer is respectively mounted on the inclined plate.

Optionally, grinding device still includes motor, first gear, second gear and gear shaft, the motor is installed in two between the riser, first gear with the motor shaft of motor is connected, the second gear with first gear engagement is connected, the gear shaft rotates and locates two between the riser, the second gear is fixed in the axial intermediate position of gear shaft, two the action wheel is fixed in respectively the axial both ends of gear shaft are located two respectively the relative outside of riser.

The utility model provides a grinding device's beneficial effect lies in: compared with the prior art, the utility model discloses a grinding device includes constant force transducer and the head of polishing, constant force transducer locates on the bed frame, the unsettled outside of locating the bed frame of head of polishing, the head of polishing is connected to constant force transducer, and constant force transducer is used for responding to the atress condition of the head of polishing and carries out corresponding flexible in order to guarantee to polish head constant force and polish, so, when the head of polishing receives the thrust of part, can conduct thrust to constant force transducer, constant force transducer carries out corresponding flexible according to the thrust that senses, make the head of polishing receive thrust invariable, thereby make the head of polishing can be to the invariable power of polishing of part output, whole grinding device's flexibility has been increased, the uniformity of part surface quality has been guaranteed, the quality of polishing is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a polishing device provided in an embodiment of the present invention;

fig. 2 is a schematic top view of a polishing device according to an embodiment of the present invention;

FIG. 3 is a schematic view of another angle of the grinding apparatus of FIG. 1;

fig. 4 is a schematic structural view of a belt supporting structure and a cylinder bracket in fig. 1.

Wherein, in the figures, the respective reference numerals:

10-a base frame; 20-a belt assembly; 30-a constant force sensor; 40-a belt supporting structure; 50-a drive mechanism; 60-a third mount; 70-a polishing head bracket; 80-a mounting seat; 90-cylinder support; 11-a first horizontal plate; 12-a second horizontal plate; 13-upright column; 14-a riser; 15-support ribs; 21-a driving wheel; 22-a driven wheel set; 23-polishing head; 24-abrasive band; 41-straight cylinder; 42-a push block; 43-a push rod; 44-oil pressure buffer; 51-a motor; 52-a first gear; 53-a second gear; 54-gear shaft; 71-a connecting shaft; 72-a connecting plate; 73-a first mounting plate; 74-a support plate; 75-linear bearings; 81-a second mounting plate; 82-a third mounting plate; 91-a fourth mounting plate; 92-a fifth mounting plate; 93-an elongated plate; 94-a sloping plate; 121-avoidance slots; 221-a first driven wheel; 222-a second driven wheel; 2211-limiting plate.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, a polishing device according to the present invention will now be described. The grinding device is used for grinding parts through the abrasive belt so as to achieve smooth processing of the surfaces of the parts.

The grinding device comprises a base frame 10, a belt component 20 and a constant force sensor 30, wherein the belt component 20 and the constant force sensor 30 are both arranged on the base frame 10. The abrasive belt assembly 20 comprises a driving wheel 21, a driven wheel group 22, a polishing head 23 and an abrasive belt 24, the driving wheel 21 and the driven wheel group 22 are respectively rotatably arranged on the base frame 10, the polishing head 23 is arranged on the outer side of the base frame 10 in a suspending manner, the polishing head 23 is connected to a constant force sensor 30, the abrasive belt 24 is respectively sleeved on the driving wheel 21, the driven wheel group 22 and the polishing head 23, the portion, sleeved with the polishing head 23, of the abrasive belt 24 is used for polishing, and the constant force sensor 30 is used for sensing the stress condition of the polishing head 23 and correspondingly stretching to ensure that the polishing head 23 is. In this embodiment, the driving wheel 21 is used for being connected with a driving mechanism and rotating, the driven wheel set 22 is used for forming transmission of the abrasive belt 24 together with the driving wheel 21, meanwhile, the driven wheel set 22 is used for tensioning the abrasive belt 24 to ensure that the abrasive belt 24 is in a tightened state during polishing, the polishing head 23 can drive the abrasive belt 24 together with the driving wheel 21 and the driven wheel set 22, and the polishing head 23 is used for bearing a part during polishing of the part by the abrasive belt 24, when polishing, the part contacts the abrasive belt 24 and pushes the polishing head 23 in a small amplitude, so as to push the constant force sensor 30, the constant force sensor 30 senses the change of force, so as to perform small-amplitude expansion and contraction, and further ensure that the polishing head 23 can perform constant force polishing. Specifically, when the polishing head 23 outputs a smaller polishing force, the constant force sensor 30 performs internal calculation and performs corresponding elongation to push the polishing head 23 toward the part, thereby correspondingly increasing the polishing force output by the polishing head 23; when the sanding force output by the sanding head 23 is large, the constant force sensor 30 is internally calculated and correspondingly shortened to retract the sanding head 23 away from the part, thereby correspondingly reducing the sanding force output by the sanding head 23.

The utility model provides a grinding device includes constant force sensor 30 and polishes head 23, constant force sensor 30 is located on bed frame 10, polish the unsettled outside of locating bed frame 10 of head 23, polish head 23 and be connected to constant force sensor 30, and constant force sensor 30 is used for responding to polish the atress condition of head 23 and carries out corresponding flexible in order to guarantee to polish 23 constant force and polish, so, when polish head 23 receives the thrust of part, can conduct thrust to constant force sensor 30, constant force sensor 30 carries out corresponding flexible according to the thrust that senses, make polish 23 thrust that the head receives invariable, thereby make polish head 23 can be to the invariable power of polishing of part output, whole grinding device's flexibility has been increased, the uniformity of part surface quality has been guaranteed, the quality of polishing has been improved.

In the embodiment, referring to fig. 1, the constant force sensor 30 includes an active contact flange, the active contact flange is fixed on the base frame 10, an output end of the active contact flange is connected to the polishing head 23, and the active contact flange can output a constant force, so as to ensure that the polishing head 23 outputs a constant polishing force, and further ensure consistency of surface quality of the part.

In another embodiment of the present application, the constant force sensor 30 may also be formed in other ways, such as by including a pressure sensor, a circuit board, a driving element, and a pushing element, specifically, the pressure sensor is connected to the polishing head 23 and is configured to sense the pressure of the polishing head 23, the circuit board is connected to the pressure sensor and the driving element respectively, the circuit board is configured to receive and analyze the pressure information transmitted by the pressure sensor, the circuit board outputs a control command to the driving element, the pushing element is connected to the polishing head 23, and the driving element drives the pushing element to push or pull the polishing head 23, so that the polishing head 23 outputs a constant polishing force.

In the present embodiment, referring to fig. 1, the base frame 10 includes two opposite and spaced vertical plates 14, and the constant force sensor 30 is disposed between the two vertical plates 14; the grinding device comprises two abrasive belt assemblies 20, each abrasive belt assembly 20 comprises a driving wheel 21, a driven wheel set 22, a grinding head 23 and an abrasive belt 24, the driving wheels 21, the driven wheel sets 22, the grinding heads 23 and the abrasive belts 24 of the two abrasive belt assemblies 20 are respectively arranged on the outer sides of the two vertical plates 14, and the constant force sensors 30 are respectively connected with the two grinding heads 23. Through the setting of two abrasive band subassemblies 20 for this grinding device can polish two different positions of a part simultaneously, perhaps polishes two parts simultaneously, has improved this grinding device's work efficiency and utilization ratio. Meanwhile, the two abrasive belt assemblies 20 are arranged on the outer sides of the two vertical plates 14 opposite to each other, the constant force sensor 30 is arranged between the two vertical plates 14, and the two abrasive belt assemblies 20 share one constant force sensor 30, so that the whole polishing device is compact in structure, small in occupied size and high in utilization rate.

Specifically, please refer to fig. 1, the base frame 10 further includes a first horizontal plate 11, a second horizontal plate 12 and four vertical columns 13, the first horizontal plate 11 and the second horizontal plate 12 are parallel and spaced apart from each other along the vertical direction, the four vertical columns 13 are vertically disposed and connected between the first horizontal plate 11 and the second horizontal plate 12, the first horizontal plate 11 is disposed on the horizontal plane, the two vertical plates 14 are vertically disposed on the second horizontal plate 12 respectively, specifically, the two vertical plates 14 are disposed on the second horizontal plate 12 along the left-right direction in fig. 1 at intervals, and the bottom of each vertical plate 14 is connected with the second horizontal plate 12 through at least two support ribs 15 to reinforce the connection strength between the vertical plate 14 and the second horizontal plate 12. In the embodiment, the height of the second horizontal plate 12 is increased by four upright posts 13, so that the working height of two abrasive belt assemblies 20 is increased, and the placement and processing of parts are facilitated.

Referring to fig. 1 to 3, the polishing apparatus further includes a driving mechanism 50. Specifically, the driving mechanism 50 includes a motor 51, a first gear 52, a second gear 53 and a gear shaft 54, the motor 51 is installed below the second horizontal plate 12 through a motor base 60, the first gear 52 is installed on an output shaft of the motor 51, the first gear 52 is also installed below the second horizontal plate 12, an avoiding groove 121 is opened in the middle of the second horizontal plate 12, most of the second gear 53 is installed above the second horizontal plate 12, the second gear 53 penetrates through the avoiding groove 121 to be meshed with the first gear 52, the gear shaft 54 is transversely installed between the two vertical plates 14, two ends of the gear shaft 54 are rotatably installed on the two vertical plates 14 through two bearings, the second gear 53 is fixed at an axial middle position of the gear shaft 54, and the two driving wheels 21 are fixed at two axial ends of the gear shaft 54 and are respectively installed at opposite outer sides of the two vertical plates 14. In operation, the motor 51 drives the first gear 52 to rotate, the first gear 52 drives the second gear 53 to rotate, and the second gear 53 drives the gear shaft 54 to rotate, so as to drive the two driving wheels 21 to rotate, and further drive the driven wheel set 22, the polishing head 23 and the abrasive belt 24 to move.

Referring to fig. 1, the driven wheel set 22 includes a first driven wheel 221 and four second driven wheels 222, specifically, the driving wheel 21 is disposed at a position near the rear lower portion of the vertical plate 14 and fixed on the gear shaft 54, the first driven wheel 221 is rotatably disposed at a position near the rear upper portion of the vertical plate 14, the four second driven wheels 222 are disposed at a position near the front portion of the vertical plate 14, the four second driven wheels 222 are substantially distributed in a trapezoidal shape, the polishing head 23 is disposed at the front side of the vertical plate 14, the polishing head 23 is disposed at the front side of the four driven wheels 222, and the abrasive belt 24 is wound around the driving wheel 21, the first driven wheel 221, the four second driven wheels 222 and the polishing head 23 as shown in fig. In operation, the motor 51 is activated to rotate the first gear 52, the second gear 52, and the gear shaft 54, so as to rotate the driving wheel 21, and further to move the first driven wheel 221, the four second driven wheels 222, the polishing head 23, and the abrasive belt 24.

In this embodiment, please refer to fig. 1 and fig. 2, the polishing apparatus further includes a polishing head support 70, the polishing head support 70 includes a connecting shaft 71, a connecting plate 72 and two first mounting plates 73, the connecting plate 72 and the constant force sensor 30 are arranged at an interval along the front-back direction in fig. 2, the connecting plate 72 is vertically arranged, and the connecting plate 72 is arranged at the same outer side of the two risers 14, specifically, the connecting plate 72 is vertically arranged at the front side of the two risers 14, the connecting shaft 71 is connected between the connecting plate 72 and the output end of the constant force sensor 30, the connecting shaft 71 is perpendicular to the connecting plate 72 and extends along the front-back direction, the two first mounting plates 73 are respectively arranged at the two opposite ends of the connecting plate 72 along the left-right direction, and the. Therefore, the thrust applied to the two polishing heads 23 can be transmitted to the constant force sensor 30 through the first mounting plate 73, the connecting plate 72 and the connecting shaft 71, and the telescopic motion of the constant force sensor 30 can be transmitted to the two polishing heads 23 through the connecting shaft 71, the connecting plate 72 and the two first mounting plates 73 respectively, so that the constant force output of the two polishing heads 23 is realized through the same constant force sensor 30, and the constant force sensor is simple and compact in structure and small in occupied size.

Referring to fig. 2, a support plate 74 is installed between the two vertical plates 14, the support plate 74 is vertically disposed, a linear bearing 75 is disposed at the center of the support plate 74, the support plate 74 is disposed between the constant force sensor 30 and the connecting plate 72, and the connecting shaft 71 penetrates through the linear bearing 75 and is rotatably disposed on the linear bearing 75, so that the connecting shaft 71 is supported between the two vertical plates 14 through the linear bearing 75, thereby ensuring the supporting strength of the connecting shaft 71 and reducing the resistance of the connecting shaft 71 to axial movement.

Referring to fig. 2, an installation seat 80 is further installed between the two vertical plates 14, the installation seat 80 includes a second installation plate 81 and two third installation plates 82, the two third installation plates 82 are respectively attached to the inner sides of the two vertical plates 14, the second installation plate 81 is connected between the two third installation plates 82, the second installation plate 81 is vertically installed and is respectively perpendicular to the two vertical plates 14, and one end of the constant force sensor 30, which is far away from the connection shaft 71, is fixed on the second installation plate 81.

In the present embodiment, referring to fig. 1, fig. 3 and fig. 4, the polishing apparatus further includes two belt supporting structures 40, and the two belt supporting structures 40 are respectively installed between the two vertical plates 14 and are respectively used for supporting the two belts 24 to a predetermined tension. It should be noted here that, when sanding, the abrasive belt 24 needs to be kept in a proper tension state, and if the abrasive belt 24 is too loose, the abrasive belt 24 will slip during sanding, and the abrasive belt 24 will not work normally; if the abrasive belt 24 is too tight, the abrasive belt 24 may break during the polishing process, or the service life of the abrasive belt 24 is reduced due to the fact that the abrasive belt 24 is always in a too tight state, and therefore, the abrasive belt 24 needs to be stretched to a preset tension degree, so that the abrasive belt 24 can be ensured to be normally carried out, and the situation of breaking or service life reduction cannot occur. In particular, the tension of sanding belt 24 is related to the material and size of sanding belt 24 and the running speed of sanding belt 24, and is not limited solely here.

When the sanding device is initially installed, when the sanding belt 24 is respectively sleeved on the driving wheel 21, the driven wheel set 22 and the sanding head 23, the sanding belt 24 can be supported by the sanding belt supporting structure 40, so as to ensure that the sanding belt 24 normally works. In addition, when the sanding head 23 is sanded, the constant force sensor 30 will extend and contract under the reverse thrust of the part, and further drive the sanding head 23 to move, so that the sanding belt 24 is in a loose or over-tensioned state again, and at the moment, the sanding belt 24 can be propped up again through the sanding belt propping structure 40, and the sanding belt 24 is ensured to work normally.

Specifically, referring to fig. 2, two belt supporting structures 40 are arranged between the two vertical plates 14 in parallel along the left-right direction, and the two belt supporting structures 40 and the constant force sensor 30 are arranged at intervals along the front-back direction, so that the whole polishing device is compact in structural installation and small in occupied space.

In this embodiment, referring to fig. 3 and 4, the abrasive belt supporting structure 40 includes a linear cylinder 41, a pushing block 42 and a pushing rod 43, the linear cylinder 41 is installed on the vertical plate 14, the pushing block 42 is installed at an output end of the linear cylinder 41, two ends of the pushing rod 43 are respectively connected to the pushing block 42 and the first driven wheel 221, a length extending direction of the pushing rod 43 is perpendicular to a pushing direction of the linear cylinder 41, and the length extending direction of the pushing rod 43 is parallel to an axial direction of the first driven wheel 221, that is, the pushing direction of the linear cylinder 41 is perpendicular to the axial direction of the first driven wheel 221, so that the pushing block 42 and the pushing rod 43 can be pushed by the linear cylinder 41 to push the first driven wheel 221 to move linearly. Specifically, the linear cylinder 41 is driven by the air pump, when the abrasive belt 24 is in an excessively tight state, the pressure of the abrasive belt 24 on the first driven wheel 221 is greater than the thrust of the linear cylinder 41 on the first driven wheel 221, and then the linear cylinder 41 retracts to drive the first driven wheel 221 to move along the retraction direction of the linear cylinder 41, so that the abrasive belt 24 is properly loosened, the abrasive belt 24 is ensured to be in a preset tight state, and the first driven wheel 221 is ensured to be in a stress balance state; when the abrasive belt 24 is in a slack state, the pressure of the abrasive belt 24 on the first driven wheel 221 is smaller than the thrust of the linear cylinder 41 on the first driven wheel 221, and then the linear cylinder 41 extends linearly to drive the first driven wheel 221 to move along the extending direction of the linear cylinder 41, so that the abrasive belt 24 enters a proper pre-tightening state, the abrasive belt 24 is ensured to be always in a preset tensioning state, and the first driven wheel 221 is ensured to be in a stress balance state.

In the present embodiment, referring to fig. 3, the belt supporting structure 40 further includes an oil buffer 44, and the oil buffer 44 is mounted on the vertical plate 14 and is used for buffering the output force of the linear cylinder 41. During actual operation, when sharp cylinder 41 promoted the dynamics of ejector pad 42 when too big, oil buffer 44 will with ejector pad 42 butt to cushion the pushing force, and then guarantee sharp cylinder 41 work steadily, also restricted the displacement distance that sharp cylinder 41 exported simultaneously under certain circumstances, prevent that first driven wheel 221 from being promoted the distance too big.

Referring to fig. 3 and 4, a cylinder bracket 90 is installed between the two vertical plates 14, and the two linear cylinders 41 are respectively installed on the cylinder bracket 90. Specifically, the cylinder support 90 includes a fourth mounting plate 91 and two fifth mounting plates 92, the two fifth mounting plates 92 are respectively attached to the inner sides of the two vertical plates 14, the fourth mounting plate 91 is connected between the two fifth mounting plates 92, the fourth mounting plate 91 is obliquely arranged, the fourth mounting plate 91 is respectively vertically arranged with the two vertical plates 14, and the fourth mounting plate 91 is parallel to the pushing direction of the two linear cylinders 41.

An extension plate 93 extending along the pushing direction of the linear cylinder 41 is arranged in the middle of the cylinder support 90, a sloping plate 94 is arranged at one end of the extension plate 93 far away from the cylinder support 90, and the four hydraulic buffers 44 are respectively arranged on the sloping plate 94. Specifically, one end of the extension plate 93 is attached to a side of the fourth mounting plate 91 facing away from the two linear cylinders 41, the inclined plate 94 is perpendicular to the extension plate 93, and the four hydraulic buffers 44 are respectively perpendicular to the inclined plate 94, that is, the buffering directions of the four hydraulic buffers 44 are parallel to the pushing direction of the linear cylinders 41.

Further, in this embodiment, the two abrasive belts are a first abrasive belt and a second abrasive belt respectively, the two polishing heads are a first polishing head and a second polishing head respectively, the width of the first abrasive belt is smaller than the width of the second abrasive belt, the outer diameter of the first polishing head is smaller than the outer diameter of the second polishing head, the first abrasive belt is sleeved on the first polishing head, the second abrasive belt is sleeved on the second polishing head, and the two abrasive belts with different widths are arranged, so that polishing of different positions of parts is realized.

Referring to fig. 1, in order to prevent the abrasive belt 24 from slipping out of the first driven wheel 221 and the second driven wheel 222 during movement, a position-limiting plate 2211 is disposed on the first driven wheel 221 and the second driven wheel 222 in the present embodiment. Specifically, for the first abrasive belt with a smaller width, the first driven wheel 221 and the second driven wheel 222 are provided with two limiting plates 2211 along the axial direction, the two limiting plates 2211 are arranged at intervals along the axial direction, and the first abrasive belt is limited between the two limiting plates 2211; for the second abrasive belt with a larger width, a limiting plate 2211 is arranged along the axial direction of the first driven wheel 221 and the second driven wheel 222, the limiting plate 2211 is arranged at the outer end of the first driven wheel 221 and the second driven wheel 222 along the axial direction, and the second abrasive belt is limited between the vertical plates 14.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The grinding device is characterized by comprising a base frame, an abrasive belt assembly and a constant force sensor arranged on the base frame, wherein the abrasive belt assembly comprises a driving wheel, a driven wheel set, a grinding head and an abrasive belt, the driving wheel and the driven wheel set are respectively rotatably arranged on the base frame, the grinding head is arranged on the outer side of the base frame in a suspending mode and is connected to the constant force sensor, the abrasive belt is respectively sleeved on the driving wheel, the driven wheel set and the grinding head, the part, located on the grinding head, of the abrasive belt sleeve is used for grinding, and the constant force sensor is used for sensing the stress condition of the grinding head and conducting corresponding stretching so as to guarantee constant force grinding of the grinding head.

2. An abrading device according to claim 1, wherein the constant force sensor comprises an active contact flange, the active contact flange being secured to the base frame, the output of the active contact flange being connected to the abrading head.

3. The abrading apparatus of claim 1, wherein the base frame includes two opposing and spaced apart risers, the constant force sensor being disposed between the two risers; the grinding device comprises two abrasive belt assemblies, driving wheels, driven wheel sets, grinding heads and abrasive belts of the two abrasive belt assemblies are respectively arranged on the outer sides, opposite to the vertical plates, of the two vertical plates, and the constant force sensors are respectively connected with the two grinding heads.

4. The polishing apparatus as claimed in claim 3, further comprising a polishing head support, wherein the polishing head support comprises a connecting shaft, a connecting plate and two first mounting plates, the connecting plate is spaced apart from the constant force sensor, the connecting plate is disposed on the same outer side of the two vertical plates, the connecting shaft is connected between the output end of the constant force sensor and the connecting plate, the two first mounting plates are disposed at opposite ends of the connecting plate, and the two polishing heads are disposed on the two connecting plates.

5. A sanding device as defined in claim 3, wherein the two sanding belts are a first sanding belt and a second sanding belt, respectively, and the two sanding heads are a first sanding head and a second sanding head, respectively, the first sanding belt having a width that is less than the width of the second sanding belt, the first sanding head having an outer diameter that is less than the outer diameter of the second sanding head.

6. An abrasive device as claimed in any one of claims 3 to 5, further comprising two belt-spreading structures mounted between the risers and adapted to spread the two belts to a predetermined tension.

7. The sanding device according to claim 6, wherein the belt support structure comprises a linear cylinder, a push block and a push rod, the linear cylinder is mounted on the vertical plate, the push block is mounted at the output end of the linear cylinder, the driven wheel set comprises a first driven wheel, two ends of the push rod are respectively connected with the push block and the first driven wheel, and the pushing direction of the linear cylinder is perpendicular to the axial direction of the first driven wheel.

8. An abrading device according to claim 7, wherein the belt support structure further comprises a hydraulic buffer mounted on the riser for buffering the output force of the linear cylinder.

9. The sanding device as defined in claim 8, wherein a cylinder frame is connected between the two vertical plates, the two linear cylinders are respectively mounted on the cylinder frame, an extension plate extending in a pushing direction of the linear cylinders is provided in the middle of the cylinder frame, an inclined plate is provided at an end of the extension plate remote from the cylinder frame, and the hydraulic buffers are respectively mounted on the inclined plates.

10. The polishing apparatus as set forth in any one of claims 3 to 5, further comprising a motor mounted between the two vertical plates, a first gear connected to a motor shaft of the motor, a second gear engaged with the first gear, and a gear shaft rotatably disposed between the two vertical plates, the second gear being fixed to an axially intermediate position of the gear shaft, and the two driving wheels being respectively fixed to axially opposite ends of the gear shaft and respectively disposed on opposite outer sides of the two vertical plates.

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