CN113510580A - Workpiece polishing equipment - Google Patents

Abstract

The invention relates to the field of workpiece surface treatment, in particular to a workpiece polishing device which comprises a rack, a polishing mechanism, a feeding mechanism and a clamping and rotating mechanism, wherein the polishing mechanism and the feeding mechanism are arranged on the rack; a liner mechanism acting on the abrasive belt to compress the workpiece is further arranged on the rack in the moving direction of the clamping and rotating mechanism, and at least one of the clamping and rotating mechanism and the liner mechanism can move longitudinally relative to the rack; the liner mechanism comprises a positioning rolling shaft and a swinging rolling shaft which are arranged up and down, and the positioning rolling shaft is elastically pressed on the inner side surface of the abrasive belt and is in rolling contact with the abrasive belt; the swing roller is elastically pressed on the inner side surface of the abrasive belt and is in rolling contact with the abrasive belt, and the swing roller can swing along the axial middle part of the swing roller. The workpiece polishing equipment can switch between the positioning roller and the swinging roller to press and polish the workpiece according to the condition, so that the hard polishing treatment of the surface of the workpiece can be realized, and the workpiece can also be attached to the surface of the workpiece to be polished.

Description

Workpiece polishing equipment

Technical Field

The invention relates to the field of workpiece surface treatment, in particular to workpiece polishing equipment.

Background

The workpiece surface treatment refers to grinding treatment of the surface of a workpiece blank to achieve the purpose of polishing. In the traditional scheme, the polishing of workpieces such as lock bodies is mainly mechanical polishing, namely, a polishing wheel which runs at a high speed is in contact with the surface of a lock workpiece to generate friction under the action of certain pressure on a certain mechanical device in a corresponding contact mode, and the allowance of the machined surface of the lock is gradually ground or polished to be smooth. However, the equipment for polishing by using the polishing wheel needs to be provided with a plurality of polishing mechanisms, and a turnover mechanism needs to be arranged between two adjacent polishing mechanisms to turn over the lock, such polishing equipment is mostly a polishing production line, and a single lock needs to be sequentially processed face by face, so that the equipment is large in whole, long in production line and not suitable for polishing small batches of locks; specifically, reference may be made to an automatic polishing machine described in the chinese patent publication with publication number "CN 104816230B".

On the basis, the prior art such as the chinese patent publication with publication number "CN 105397599B" describes a workpiece polishing machine, which includes a frame, a feeding mechanism and a polishing mechanism fixed on the frame, a sliding pair movably disposed on the frame, and a workpiece clamping mechanism fixed on the sliding pair; the feeding mechanism is characterized in that a feeding station corresponds to a discharge port of the feeding mechanism, a polishing station is arranged on the polishing mechanism, a moving pair drives the workpiece clamping mechanism to move between the feeding station and the polishing station, a tool clamp in the workpiece clamping mechanism rotates on the polishing station, and a workpiece in the tool clamp is matched with the polishing mechanism for polishing. The workpiece polishing machine is simple in structure, and can polish multiple surfaces of a single lock in one polishing station by rotating the workpiece.

The machine frame is provided with an abrasive belt adjusting component, the abrasive belt adjusting component comprises an abrasive belt lining plate which is abutted against the inner side surface of an abrasive belt, and a polishing station corresponds to the abrasive belt lining plate; the abrasive belt lining plate is propped against the inner side surface of the abrasive belt to be ground with the surface of a workpiece, so that the polishing effect is ensured. In a further scheme, the abrasive belt lining plate comprises a lining plate main body and pin blocks arranged on two sides of the lining plate main body, wherein the lining plate main body is connected with the pin blocks through longitudinal pin shafts; the outer end part of the optical axis is fixed on the pin block, the inner end part of the optical axis is positioned in the base through the linear bearing, the adjusting spring is sleeved on the outer side of the optical axis, and the two end parts of the adjusting spring are respectively abutted against the base and the pin block. When the abrasive belt lining plate is polished, the extending distances of the two sides of the abrasive belt lining plate can be different, when the lining plate main body is extruded inwards in a single side, the other side of the lining plate main body and the pin block can rotate for a certain angle through the pin shaft, and at the moment, the abrasive belt lining plate is inclined and can be attached to the side face of the lock for abrasive belt polishing. The structure of this scheme based on abrasive band welt can be applicable to irregular tool to lock or the conventional rectangle form tool to lock of adaptation but the terminal surface processing has the condition of error.

However, the workpiece polishing machine adopting the abrasive belt adjusting component at least has the following problems: 1, the abrasive belt lining plate is of a plate-shaped structure and is in frictional contact with an abrasive belt, so that the abrasive belt has larger resistance in operation; 2, when the plane of the workpiece is processed, the abrasive belt lining plate drives the abrasive belt to press against the workpiece in a surface contact manner, so that the front polishing effect is difficult to ensure; 3, when the end face of the processed workpiece is not flat (if the lock body is obtained by cutting a blank, but the end face cannot be cut at a completely vertical angle in production, the end face can be inclined as long as a certain oblique angle exists, namely, the lock body is not flat, but the inclination of a small angle cannot influence the normal use of the lock), although the abrasive belt lining plate can rotate for a certain angle relative to the pin block to try to joint; but the structure is more complicated, the acting force of the adjusting spring needs to be overcome during adjustment, and the sensitivity is insufficient.

Additionally, the prior art padlock, as shown in fig. 12 and 13, includes a lock body 101 and a shackle 102. The processing steps of such blade padlocks are generally: the blank is perforated, the pins and the bulkhead are installed, polishing is carried out, the lock beam 102, the steel balls 204 and the lock cylinder 203 are installed, and then the bulkhead 205 is pressed to seal the lock cylinder in the lock cylinder hole. The blank is provided with a lock beam hole 103, a lock cylinder hole 104, a pin hole 105 and a steel ball assembling hole 106 which is communicated with the lock beam hole and the lock cylinder hole and used for loading steel balls. As shown in the figure, the steel ball assembly hole is completely arranged in the lock body, so that a hole needs to be punched from the side wall of the lock body when the hole is opened, and a fabrication hole 107 is left on the side wall of the lock body; the fabrication hole needs to be closed by a bulkhead 201. As shown in the arc lock body shown in fig. 1 and 2, the fabrication hole 107 is provided with an arc surface of the lock body, when the blank cap 201 is opened, part of the edge of the blank cap is positioned at the outer side of the arc surface and needs to be polished; however, the belt liner used in the conventional polishing machine may tilt the belt toward the workpiece surface, and may not provide enough pressing force to polish the edge of the blank cap.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a workpiece polishing apparatus that can switch between a positioning roller and a swinging roller to press and polish a workpiece as appropriate, thereby performing both hard grinding treatment of the surface of the workpiece and polishing treatment by adhering to the surface of the workpiece.

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

the workpiece polishing equipment comprises a rack, a polishing mechanism, a feeding mechanism and a clamping and rotating mechanism, wherein the polishing mechanism and the feeding mechanism are arranged on the rack; the polishing mechanism comprises an abrasive belt positioned and arranged on the frame and a polishing motor for driving the abrasive belt to move; the clamping and rotating mechanism can receive a workpiece from the tail end of the feeding mechanism and transversely move along the rack to enable the workpiece to be close to or far away from the abrasive belt; the method is characterized in that: a liner mechanism acting on the abrasive belt to compress the workpiece is further arranged on the rack in the moving direction of the clamping and rotating mechanism, and at least one of the clamping and rotating mechanism and the liner mechanism can move longitudinally relative to the rack; the liner mechanism comprises a positioning rolling shaft and a swinging rolling shaft which are arranged up and down, and the positioning rolling shaft is elastically pressed on the inner side surface of the abrasive belt and is in rolling contact with the abrasive belt; the swing roller is elastically pressed on the inner side surface of the abrasive belt and is in rolling contact with the abrasive belt, and the swing roller can swing along the axial middle part of the swing roller.

The invention adopts the technical scheme, which relates to workpiece polishing equipment, wherein the workpiece polishing equipment comprises a polishing mechanism and a clamping and rotating mechanism; during processing, the clamping and rotating mechanism is used for bearing a workpiece at the tail end of the feeding mechanism and then transversely moving along the rack to enable the workpiece to be close to an abrasive belt in the polishing mechanism; the polishing motor drives the abrasive belt to move circularly, and the clamping and rotating mechanism drives the workpiece to rotate, so that the whole side wall of the workpiece can be polished by matching with the abrasive belt, the tool face turning of the lockset is not needed, the equipment structure is simplified, and the production cost is reduced.

On the basis, the liner mechanism is arranged on the rack clamping the moving direction of the rotating mechanism and used for enabling the abrasive belt to tightly press the workpiece, so that the abrasive belt can be attached to the workpiece to be polished, and the polishing effect is guaranteed. In a specific embodiment, the lining mechanism comprises a positioning roller and a swinging roller which are arranged up and down, and at least one of the clamping rotating mechanism and the lining mechanism can move longitudinally relative to the frame; when the polishing machine is used, the positioning roller and the swinging roller can be switched to press against a workpiece for polishing according to conditions. Thus, when the lock body is shown in the attached figure 3 in the background art, the positioning rolling shaft can be firstly adopted to press and polish a workpiece, and the pressing force provided by the positioning rolling shaft is enough to enable the abrasive belt to polish the edge of the blank cover part; and then adjusting the abrasive belt to press and support the workpiece for polishing, wherein the abrasive belt can be ensured to be completely attached to the end face of the lock body by the swing roller for polishing.

In addition, the lining mechanism in the present case has the following three advantages compared with the belt lining plate mentioned in the background art:

compared with an abrasive belt lining plate adopted in the background technology, the abrasive belt can be guided by the positioning roller and the swinging roller, so that the abrasive belt can smoothly and circularly run, and the running resistance of the abrasive belt is reduced;

2, when the existing workpiece is polished, the positioning roller and the swinging roller can ensure that the abrasive belt is in line contact with the outer wall of the workpiece, namely the polishing position of the workpiece is necessarily tangent to the swinging roller; therefore, the abrasive belt can be intensively polished in a small area of the workpiece by the swinging roller whenever, and compared with a scheme of polishing by whole-surface contact, the scheme can better ensure the polishing effect;

3, the swing roller can swing along the axial middle part thereof, compared with the abrasive belt lining plate adopted in the background technology; the scheme simplifies the structure, but still enables the swing roller to be suitable for the processing condition of irregular workpieces or the processing condition of regular rectangular workpieces with errors in end face processing. In addition, the swing roller swings based on the middle of the axial direction, the abrasive belt can be ensured to be attached to the polishing surface of the workpiece in a lever-like mode, the inclination of the abrasive belt does not need to be adjusted by means of a spring, and the sensitivity is higher.

In a particular embodiment, a liner mechanism is employed that is capable of moving longitudinally along the frame. Specifically, a longitudinal moving pair is arranged on the rack, and the lining mechanism is arranged on the longitudinal moving pair; the cushion mechanism is longitudinally movable relative to the frame based on the longitudinal moving pair.

Further, the polishing device can switch between the positioning roller and the swinging roller to press and polish the workpiece according to conditions, although the polishing device is specifically realized by the longitudinal movement of the liner driving mechanism through the longitudinal movement pair, the abrasive belt is abutted against the positioning roller and the swinging roller, and the tightness of the abrasive belt at the polishing position is difficult to guarantee. Therefore, the positioning roller adopted in the scheme can extend forwards or backwards relative to the swinging roller. When the positioning rolling shaft is required to press and press a workpiece for polishing, the positioning rolling shaft extends forwards to the front of the swinging rolling shaft; when the swinging roller is required to press and support the workpiece for polishing, the positioning roller retreats to the rear of the swinging roller. In a specific scheme, the gasket mechanism comprises a fixed seat and an upper moving seat connected with the fixed seat; the upper end part of the fixed seat is provided with a square through hole, the upper moving seat is provided with an optical axis which penetrates through the square through hole, and the outer wall of the cylindrical optical axis is tangent to the square through hole; the positioning roller is rotatably installed on the upper moving seat, the fixing seat is provided with an adjusting cylinder and a second spring, the adjusting cylinder and the second spring are respectively connected with two sides of the moving seat, and the positioning roller can swing relative to the roller to extend forwards or retreat based on the adjusting cylinder and the second spring.

In this scheme, go up the movable seat and wear to establish can the relative fixed seat removal in square through hole based on cylindrical optical axis, adopt the tangent scheme of cylindrical optical axis outer wall and square through hole, its concrete effect has specifically expounded hereinafter.

Preferably, the gasket mechanism comprises a fixed seat and a lower movable seat connected with the fixed seat; a first spring is arranged between the lower moving seat and the fixed seat; based on the elasticity of the first spring, the swing rolling shaft is elastically pressed on the inner side surface of the abrasive belt. In the technical scheme, the lower moving seat and the fixed seat are opened based on the elasticity of the first spring, and the swinging rolling shaft is elastically pressed on the inner side surface of the abrasive belt, so that the abrasive belt can be attached to a workpiece. When the swinging roller is extruded during workpiece polishing, the lower moving seat can be driven to move towards the fixed seat, and the first spring is compressed.

In a specific scheme, a cylindrical optical axis is arranged on the lower moving seat, and a square through hole is arranged in the fixed seat; the cylindrical optical axis is arranged in the square through hole in a penetrating mode, and the outer wall of the cylindrical optical axis is tangent to the square through hole. The lower moving seat in the scheme can move relative to the fixed seat based on the cylindrical optical axis in the square through hole in a penetrating mode. Meanwhile, since the surface treatment equipment described in the above scheme is mainly used for polishing a workpiece, a large amount of metal chips are generated during polishing. In order to avoid the influence of metal chips on the movement of the movable seat, the scheme adopts a mode that the outer wall of the cylindrical optical axis is tangent to the square through hole, so that the radial positioning and the axial movement can be ensured; the contact points of the outer wall of the cylindrical optical axis and the inner wall of the square through hole are reduced, metal scraps can be stored at four end corners of the square through hole, and the matching of the outer wall of the cylindrical optical axis and the inner wall of the square through hole is not influenced.

Preferably, a swinging seat is hinged above the lower moving seat, and two axial ends of the swinging roller are rotatably positioned on the swinging seat. In the scheme, the swing rolling shaft is rotationally positioned on the swing seat, the middle part of the swing seat is hinged above the lower moving seat, and when the polished surface of the workpiece is uneven, the swing seat and the swing rolling shaft on the swing seat rotate by a certain angle along the hinged end to be attached in an adaptive manner, so that the swing seat is very flexible and does not need to be pressed against with large force.

Preferably, the polishing mechanism comprises a sanding belt which is positioned and installed on the frame through a driving wheel and at least one group of driven wheels, a polishing motor which drives the driving wheel to rotate, and an eccentric driving component which drives the driven wheels to eccentrically swing along the longitudinal direction; the driving wheel and the driven wheels are longitudinally arranged, one group of driven wheels is arranged on the eccentric support, and the output end of the eccentric driving assembly is connected with the eccentric support. An abrasive belt in the polishing mechanism is positioned and installed on the frame through a driving wheel and at least one group of driven wheels, and a polishing motor drives the driving wheel to rotate, so that the abrasive belt is driven to circularly operate to polish workpieces. On the basis, the polishing mechanism further comprises an eccentric driving assembly, and the eccentric driving assembly can drive the eccentric support and a driven wheel connected with the eccentric support to eccentrically swing along the diameter of the abrasive belt in the length direction. So in the abrasive band circulation operation in-process, can drive the abrasive band at the width direction swing from the eccentric swing of driving wheel to make the abrasive band through the polishing station adjust in the width direction, the effective usable floor area of abrasive band is wider.

Preferably, the eccentric bracket comprises a U-shaped frame at the upper part and a rotating shaft below the U-shaped frame; the frame is provided with a shaft sleeve, a rotating shaft of the eccentric support is positioned in the shaft sleeve, and two shaft ends of the driven wheel are positioned on the U-shaped frame. In the technical scheme, two shaft ends of a driven wheel are positioned on a U-shaped frame of an eccentric support, a rotating shaft at the lower end of the eccentric support is rotatably arranged in a shaft sleeve, and when the eccentric driving assembly drives, the eccentric support deflects by a small angle by taking the rotating shaft at the lower end of the eccentric support as a center.

Preferably, a rotating shaft of the eccentric support penetrates through the shaft sleeve and penetrates out of the bottom of the shaft sleeve, and a supporting spring is sleeved on the rotating shaft between the shaft sleeve and the U-shaped frame; the lower end part of the rotating shaft is provided with a baffle, and the outer side of the shaft sleeve is provided with a pressing component which can act on the baffle and drive the eccentric support to move downwards. The abrasive belt is installed on the rack through the driving wheel and at least one group of driven wheels in a positioning mode, the eccentric support in the scheme is supported through the supporting spring, and the eccentric support can be pressed downwards when the pressing part is operated, so that the distance between the driving wheel and the driven wheels is reduced, and the abrasive belt is used for being disassembled, assembled and replaced.

Preferably, the pressing part is an eccentric pressing wheel hinged on the outer wall of the shaft sleeve, and a pressing rod connected to the eccentric pressing wheel.

Preferably, the eccentric driving assembly comprises an eccentric driving motor, a rotary disc connected to an output shaft of the eccentric driving motor, and a link rod with two ends respectively connected with the rotary disc and the eccentric bracket.

Preferably, the clamping and rotating mechanism is mounted on the transverse moving pair and comprises a tool clamp, a driving motor for driving the tool clamp to rotate, and a clamping cylinder for driving the tool clamp to clamp or loosen the workpiece; the tool clamp comprises two clamping shafts which are arranged oppositely, the clamping cylinder at least drives one of the clamping shafts to move along the axial direction of the clamping shaft, so that the end parts of the two clamping shafts are close to or far away from each other, and the driving motor drives the two groups of clamping shafts to synchronously rotate; an elastic part and two positioning columns are arranged on the end face of one clamping shaft, and the two positioning columns can extend into two lock beam holes of the lock body; the output end of the elastic component can extend out of the end face of the clamping shaft or retract into the clamping shaft. In the clamping and rotating mechanism, the clamping cylinder drives the clamping shafts to move along the axial direction of the clamping shafts, so that the end parts of the two clamping shafts are close to or far away from each other, and the clamping or loosening of the tool clamp is controlled. After the work piece is clamped by the work piece clamp, the driving motor drives the work piece clamp and the work piece on the work piece clamp to rotate, and therefore surface treatment can be carried out on the work piece.

Particularly, frock clamp includes that subtend sets up and can be close to each other or two clamp dress axles of keeping away from, can be used for the centre gripping lock body when two clamp dress axles are close to, then can loosen the lock body when two clamp dress axles are kept away from. On the basis, an elastic part and two positioning columns are arranged on the end face of one of the clamping shafts, when the two clamping shafts are close to each other, the two positioning columns stretch into the two lock beam holes of the lock body, so that the lock body is accurately clamped and positioned, and the output end of the elastic part is pressed into the clamping shafts in this state. When the two clamping shafts are far away from each other, the output end of the elastic component pops the lock body out of the end part of the clamping shaft based on the elasticity of the elastic component, and blanking is completed.

Preferably, the clamping shaft is sleeved with a clamp shaft sleeve, the clamp shaft sleeve and the clamping shaft are in circumferential linkage and are axially movably arranged, and the output end of the driving motor is in transmission connection with the clamp shaft sleeve; the cylinder shaft of the clamping cylinder is axially fixed with the clamp shaft, and the circumference is not fixed; two groups of driving belt pulleys are arranged on the transverse moving pair, and the two groups of driving belt pulleys are connected and synchronized with the clamp shaft sleeves on the two clamping shafts through belts; the two groups of driving belt pulleys are connected through a coupler and connected with an output shaft of a driving motor.

Drawings

Fig. 1 is a schematic view of a padlock body to be polished used in the present embodiment.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Figure 3 is a schematic view of the padlock body of figure 1 after finishing.

Fig. 4 is a schematic side view of the surface treatment apparatus according to the present disclosure.

Fig. 5 is a schematic top view of the surface treatment apparatus according to the present disclosure.

Fig. 6 is a schematic view of the structure of the clip shaft.

Fig. 7 is a schematic structural view of the polishing mechanism.

Fig. 8 is a structural sectional view of the spacer mechanism.

Fig. 9 is a perspective view of the spacer mechanism.

Fig. 10 is a schematic view of the feeding mechanism.

Fig. 11 is a schematic view of a blanking mechanism.

Fig. 12 is a schematic structural view of a conventional padlock.

Fig. 13 is a schematic view of the internal structure of a conventional padlock body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present 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, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 4 to 11, the present embodiment relates to a workpiece surface treatment apparatus, and more particularly, to a workpiece polishing apparatus; the workpiece processed in the scheme mainly refers to a padlock body, and can be processed like a rectangular body and a round-corner rectangular workpiece of the padlock body; the padlock body as shown in fig. 1 and 2 is mainly adopted in the embodiment; figure 3 is a view of the padlock body of figure 1 after treatment with the workpiece polishing device.

Specifically, the workpiece polishing device comprises a frame 1, a polishing mechanism 2, a feeding mechanism 3, a discharging mechanism and a clamping and rotating mechanism 5, wherein the polishing mechanism 2, the feeding mechanism 3 and the discharging mechanism are mounted on the frame 1, and the clamping and rotating mechanism is used for clamping and positioning a workpiece and driving the workpiece to rotate. As shown in fig. 10, the feeding mechanism 3 includes a feeding rail 31, a receiving plate 33 received at an end of the feeding rail, and a feeding cylinder 32 having an output end connected to the receiving plate 33. The tail end of the feeding rail 31 is provided with a blocking plate 34 which is longitudinally arranged, and the material receiving plate 33 transversely moves below the blocking plate 34, and the distance between the material receiving plate and the blocking plate is larger than the thickness of one workpiece and smaller than the thickness of two workpieces. The feeding track 31 is obliquely arranged, and the upstream of the feeding track can receive the material selecting track, so that the lock bodies in the feeding track 31 keep the lock beam holes facing to the same side; the material loading cylinder 32 drives the material receiving plate 33 to move and transfer the received workpiece to the clamping station of the clamping and rotating mechanism 5. The structure adopts the material receiving plate 33 to pre-feed, shortens the distance of the transverse movement required by the clamping and rotating mechanism 5, and improves the processing efficiency. In addition, the length of the receiving plate 33 is greater than the distance between the end of the feeding rail 31 and the clamping position of the clamping and rotating mechanism 5, so that when the receiving plate 33 moves to the clamping position of the clamping and rotating mechanism 5, the end of the feeding rail 31 is still supported by the tail of the receiving plate 33, and the workpiece cannot fall off.

The polishing mechanism 2 comprises a sanding belt 23 which is positioned and installed on the frame 1 through a driving wheel 21 and at least one group of driven wheels 22, a polishing motor 24 which drives the driving wheel 21 to rotate, and an eccentric driving component which drives the driven wheels 22 to eccentrically swing along the longitudinal direction. The driving wheel 21 and the driven wheel 22 are longitudinally arranged, the driving wheel 21 is positioned and installed at the bottom of the rack 1, the output end of the polishing motor 24 is connected with the driving wheel 21 through a reduction gearbox, and the polishing motor 24 drives the driving wheel 21 to rotate and drives the abrasive belt 23 to circularly move; one set of driven wheels 22 is mounted on an eccentric support 25, the output of the eccentric drive assembly being connected to the eccentric support 25. The eccentric driving assembly can drive the eccentric bracket 25 and the driven wheel 22 connected with the eccentric bracket to eccentrically swing along the diameter of the abrasive belt 23 in the length direction. Therefore, in the circulating operation process of the abrasive belt 23, the eccentric swing of the driven wheel 22 can drive the abrasive belt 23 to swing in the width direction, so that the abrasive belt 23 passing through the polishing station is adjusted in the width direction, and the effective use area of the abrasive belt 23 is wider.

In the embodiment shown in fig. 4 and 7, the eccentric driving assembly includes an eccentric driving motor 26, a rotating plate 27 connected to an output shaft of the eccentric driving motor 26, and a link 28 having both ends connected to the rotating plate 27 and the eccentric bracket 25, respectively. When the output shaft of the eccentric driving motor 26 rotates, the rotating disc 27 is driven to rotate, one end of the link rod 28 rotates along with the disc surface of the rotating disc 27, and the eccentric bracket 25 connected with the other end of the link rod 28 is synchronously driven to eccentrically swing.

In a further preferred embodiment, the eccentric bracket 25 includes a U-shaped frame 251 at an upper portion, and a rotating shaft 252 under the U-shaped frame 251. The machine frame 1 is provided with a shaft sleeve 11, a rotating shaft 252 of the eccentric bracket 25 is positioned in the shaft sleeve 11, and two shaft ends of the driven wheel 22 are positioned on a U-shaped frame 251. In this embodiment, two axial ends of the driven wheel 22 are positioned on the U-shaped frame 251 of the eccentric bracket 25, the rotating shaft 252 at the lower end of the eccentric bracket 25 is rotatably disposed inside the shaft sleeve 11, and when the eccentric driving assembly is driven, the eccentric bracket 25 is deflected by a small angle with the rotating shaft 252 at the lower end as a center.

In addition, the rotating shaft 252 of the eccentric bracket 25 passes through the shaft sleeve 11 and penetrates out of the bottom of the shaft sleeve, a supporting spring 253 is sleeved on the rotating shaft 252 between the shaft sleeve 11 and the U-shaped frame 251, the abrasive belt 23 is tensioned based on the elastic force of the supporting spring 253, and the abrasive belt can be rotated based on the pressing component 29. Specifically, a stopper 254 is provided at a lower end portion of the rotating shaft 252, and a pressing member 29 which can drive the eccentric bracket 25 downward by acting on the stopper 254 is provided outside the sleeve 11. In the above-mentioned solution, the abrasive belt 23 is positioned and mounted on the frame 1 through the driving wheel 21 and at least one set of driven wheels 22, the eccentric bracket 25 in this solution is supported by the supporting spring 253, and the eccentric bracket 25 can be pressed down when the pressing part 29 is operated, so that the distance between the driving wheel 21 and the driven wheels 22 is reduced, and the abrasive belt 23 is used for dismounting and replacing. In the scheme shown in the figure, the pressing part 29 is an eccentric pressing wheel 291 hinged on the outer wall of the shaft sleeve 11, and a pressing rod 292 connected to the eccentric pressing wheel 291; when the abrasive belt 23 needs to be removed and replaced, only the pressing rod 292 needs to be pressed.

As shown in fig. 4 and 5, a transverse moving pair 12 is provided on the frame 1, and the clamping and rotating mechanism 5 is mounted on the transverse moving pair 12, wherein the transverse moving pair 12 is used for driving the clamping and rotating mechanism 5 and the workpiece thereon to move transversely along the frame 1, so that the workpiece is close to or far from the abrasive belt 23. In the scheme, a numerical control drive transverse moving pair 12 is adopted, and the transverse moving pair 12 sets a running path based on the outer contour of the workpiece to be processed set by the equipment, so that the workpiece can be tightly pressed and attached to an abrasive belt 23 and is in rolling fit with the abrasive belt 23 for polishing. Therefore, the transverse moving pair 12 in the present scheme adopts a structure that a numerical control motor drives a transverse moving plate through a lead screw, and since the structure is a conventional structure in the mechanical field, a description thereof will not be repeated. When the equipment is processed, the clamping and rotating mechanism 5 is used for receiving a workpiece at the tail end of the feeding mechanism 3 and then transversely moving along the frame 1 to enable the workpiece to be close to the abrasive belt 23 in the polishing mechanism 2. The polishing motor 24 drives the abrasive belt 23 to move circularly, and meanwhile, the clamping and rotating mechanism 5 drives the workpiece to rotate, so that the whole side wall of the workpiece can be polished by matching with the abrasive belt 23, the tool does not need to be turned over, the equipment structure is simplified, and the production cost is reduced.

The scheme considers that the scheme in the background technology leads the surface of the workpiece to have obvious ending sections when the scheme is away from the polishing position at the moment of finishing the polishing process. Therefore, in the end polishing process in the scheme, the transverse moving pair 12 drives the workpiece to gradually move away from the abrasive belt 23; the gradual-change-type far-away means that in a section of initial path where the transverse moving pair 12 drives the workpiece to be far away, the clamping rotating mechanism 5 drives the workpiece to rotate, so that the workpiece in the path is still in contact with the abrasive belt 23. Therefore, the abrasive belt 23 gradually finishes polishing the surface of the workpiece, the surface of the workpiece has no obvious finishing section, and the surface is smoother.

As shown in fig. 5, the clamping and rotating mechanism 5 includes a tool clamp, a driving motor 52 for driving the tool clamp to rotate, and a clamping cylinder 53 for driving the tool clamp to clamp or unclamp the workpiece. The tooling clamp comprises two clamping shafts 51 which are oppositely arranged, a clamping cylinder 53 at least drives one of the clamping shafts 51 to move along the axial direction of the clamping shaft, so that the end parts of the two clamping shafts 51 are close to or far away from each other, and a driving motor 52 drives the two groups of clamping shafts 51 to synchronously rotate. In a specific embodiment, there is and only one clamping shaft 51 capable of axial movement, the cylinder end of the clamping cylinder 53 is connected to the clamping shaft 51, and the clamping cylinder 53 drives the clamping shaft 51 to move axially to approach or separate from the end of the other clamping shaft 51. The clamping shaft 51 is sleeved with a clamping shaft sleeve 54, the clamping shaft sleeve 54 and the clamping shaft 51 are in circumferential linkage and are axially and movably arranged, and the output end of the driving motor 52 is in transmission connection with the clamping shaft sleeve 54. The cylinder shaft of the clamping cylinder 53 is axially fixed with the clamping shaft, and the circumferential direction is not fixed. Two groups of driving belt pulleys 55 are arranged on the transverse moving pair 12, and the two groups of driving belt pulleys 55 are connected and synchronized with clamping shaft sleeves 54 on the two clamping shafts 51 through a belt 56; the two sets of driving pulleys 55 are connected by a coupling and are connected to the output shaft of the driving motor 52. The specific structure of the driving motor 52 and the clamping cylinder 53 for driving the tool holder can be referred to as the scheme described in the chinese patent publication with publication number "CN 105397599B".

The difference from the prior art is that an elastic part 57 and two positioning columns 58 are arranged on the end face of one clamping shaft 51, and the two positioning columns 58 can extend into two lock beam holes of the lock body; the outer end of the positioning column 58 is conical; the tapered outer end portion can guide the clamping position so that the locating post 58 can extend into the shackle hole of the lock body. The output end of the elastic member 57 can protrude from the end surface of the clamping shaft 51 or be retracted into the clamping shaft 51. The elastic component 57 includes a shaft rod movably inserted into the end of the clamping shaft 51, and a spring disposed inside the clamping shaft 51; the shaft is between two locating posts 58.

In the clamping and rotating mechanism 5, the clamping cylinder 53 drives the clamping shafts 51 to move along the axial direction thereof, so that the ends of the two clamping shafts 51 are close to or far away from each other, thereby controlling the clamping or loosening of the tool clamp. After the work is clamped by the work fixture, the driving motor 52 drives the work fixture and the work thereon to rotate, so that the surface treatment can be performed on the work. Specifically, frock clamp includes that subtend sets up and can be close to each other or two clamp dress axles 51 of keeping away from, can be used for the centre gripping lock body when two clamp dress axles 51 are close to, then can loosen the lock body when two clamp dress axles 51 are kept away from. On the basis, an elastic part 57 and two positioning columns 58 are arranged on the end face of one clamping shaft 51, when the two clamping shafts 51 are close to each other, the two positioning columns 58 extend into two lock beam holes of the lock body so as to accurately clamp and position the lock body, and the output end of the elastic part 57 is pressed into the clamping shaft 51 by the lock body in the state. When the two clamping shafts 51 are far away, the output end of the elastic component 57 ejects the lock body from the end part of the clamping shaft 51 based on the elasticity of the elastic component 57, and the blanking is completed.

The workpiece clamped by the clamping and rotating mechanism 5 of the polishing equipment moves between the tail end of the feeding rail 31 and the polishing station under the driving of the transverse moving pair 12; in one embodiment, a blanking track 4 is arranged on the frame 1 below the clamping and rotating mechanism 5, and when finishing polishing, the output end of the elastic component 57 ejects the lock body from the end part of the clamping shaft 51 and then falls into the blanking track 4. Considering that the lock body may be damaged by falling and collision, in another embodiment, a set of blanking manipulators may be further provided to clamp the workpiece before the clamping and rotating mechanism 5 releases the workpiece, and to remove the workpiece after the clamping and rotating mechanism 5 completely releases the workpiece, so as to complete blanking. In a more preferable scheme shown in fig. 11, a tapered channel 40 with a large inlet and a small outlet is arranged in the blanking track 4, on one hand, the inlet end of the tapered channel is in close contact with the workpiece, and the problem that the workpiece is dropped, lifted and damaged is avoided; on the other hand, the conical channel is used for standardizing the orientation of the workpieces in the blanking track, so that subsequent workpiece arrangement is facilitated. Furthermore, the side wall of the blanking rail 4 is divided into two side wall parts 41 which can move relatively, and the workpieces with different sizes can be adapted through the distance between the side wall parts.

As shown in fig. 4, 8 and 9, a longitudinal moving pair 13 is provided on the frame 1, and a cushion mechanism 6 is provided on the longitudinal moving pair 13. The longitudinal moving pair 13 is the same as the transverse moving pair 12, and adopts a structure that a numerical control motor drives a transverse moving plate through a screw rod, and the gasket mechanism 6 is driven to longitudinally move relative to the rack 1 based on the longitudinal moving pair 13. The lining means 6 acts on the sanding belt 23 and presses the sanding belt 23 against the workpiece in line contact. According to the scheme, the gasket mechanism 6 is arranged on the rack 1 in the moving direction of the clamping and rotating mechanism 5, the gasket mechanism 6 is arranged on the longitudinal moving pair 13, the longitudinal moving pair 13 can drive the gasket mechanism 6 to move longitudinally, and meanwhile, the gasket mechanism 6 acts on the abrasive belt 23 and enables the abrasive belt 23 to press the workpiece in a line contact mode. When the polishing machine works, the abrasive belt 23 polishes a slender area of the surface of a workpiece in real time, and meanwhile, the linear contact position can move longitudinally by matching with the longitudinal moving pair 13, so that the whole outer surface of the workpiece can be polished locally and finely.

In a specific embodiment, the lining mechanism 6 comprises a fixed seat 61, a lower moving seat 62 and an upper moving seat 64 connected with the fixed seat 61, a positioning roller 63 positioned on the upper moving seat 64, a swinging seat 65 hinged above the lower moving seat 62, and a swinging roller 66 rotatably positioned on the swinging seat 65 at two axial ends, wherein the swinging roller (66) can swing along a central shaft 650 of the swinging seat 65.

The positioning roller 63 is elastically pressed against the inner side surface of the abrasive belt 23 and is in rolling contact with the abrasive belt 23. Swing roller 66 is elastically pressed against the inner side surface of sanding belt 23 and is in rolling contact with sanding belt 23, and swing roller 66 can swing along the axial middle part thereof. In this embodiment, the lining mechanism 6 includes a positioning roller 63 and a swinging roller 66 disposed one above the other, and the lining mechanism 6 is provided on the longitudinal moving pair 13 so as to be longitudinally movable with respect to the frame 1. In use, the pressing against the workpiece may be switched between the positioning roller 63 and the oscillating roller 66 for polishing, as the case may be. Thus, in the case of a lock body as shown in fig. 3 of the background art, the positioning roller 63 may be first pressed against the workpiece for polishing, and the pressing force provided by the positioning roller 63 is enough to enable the abrasive belt 23 to polish off part of the edge of the blank cap 201. And then the polishing is carried out by adjusting the swinging roller 66 to press the workpiece, and the swinging roller 66 can ensure that the abrasive belt 23 is completely attached to the end face of the lock body for polishing.

In a specific embodiment, a first spring 67 is disposed between the lower moving seat 62 and the fixed seat 61. Based on the elastic force of first spring 67, oscillating roller 66 is elastically pressed against the inner side of abrasive belt 23. The space between the lower moving seat 62 and the fixed seat 61 is expanded based on the elastic force of the first spring 67, and the swing roller 66 is elastically pressed against the inner side surface of the abrasive belt 23, so that the abrasive belt 23 can be attached to a workpiece. When the swing roller 66 is pressed when the workpiece is polished, the lower movable base 62 is driven to move toward the fixed base 61, and the first spring 67 is compressed. As shown in the figure, the lower moving seat 62 is provided with a cylindrical optical axis 601, and the fixed seat 61 is provided with a square through hole 602. The cylindrical optical axis 601 penetrates through the square through hole 602, and the outer wall of the cylindrical optical axis 601 is tangent to the square through hole 602. The lower moving seat 62 in this solution is inserted into the square through hole 602 based on the cylindrical optical axis 601 and can move relative to the fixed seat 61. Meanwhile, since the surface treatment equipment described in the above scheme is mainly used for polishing a workpiece, a large amount of metal chips are generated during polishing. In order to avoid the influence of metal chips on the movement of the movable seat 62, the outer wall of the cylindrical optical axis 601 is tangent to the square through hole 602, so that the radial positioning and the axial movement can be ensured. And the contact points between the outer wall of the cylindrical optical axis 601 and the inner wall of the square through hole 602 are reduced, metal scraps can be contained at four end corners of the square through hole 602, and the matching between the outer wall of the cylindrical optical axis 601 and the inner wall of the square through hole 602 is not influenced.

In addition, the swing roller 66 is rotatably positioned on the swing seat 65, the middle part of the swing seat 65 is hinged above the lower moving seat 62, and when the polishing surface of the workpiece is uneven, the swing seat 65 and the swing roller 66 thereon rotate by a certain angle along the hinged end to be attached adaptively, so that the operation is very flexible and large force is not required to press the workpiece.

Further, in the above solution, it is described that the polishing apparatus can switch between the positioning roller 63 and the swinging roller 66 to press and polish the workpiece according to the situation, and although the longitudinal movement of the lining mechanism 6 is specifically achieved by the longitudinal movement pair 13, it is difficult to ensure that the abrasive belt 23 is tightened at the polishing position by abutting on the positioning roller 63 and the swinging roller 66. Therefore, the positioning roller 63 used in this embodiment can be advanced or retracted relative to the swing roller 66. When the positioning roller 63 is required to press against a workpiece for polishing, the positioning roller 63 extends forward to the front of the swing roller 66. When the swinging roller 66 is required to press the workpiece for polishing, the positioning roller 63 retreats to the rear of the swinging roller 66. In the specific scheme, the upper end of the fixed seat 61 is provided with a square through hole 602, the upper moving seat 64 is provided with an optical axis penetrating through the square through hole 602, and the outer wall of the cylindrical optical axis 601 is tangent to the square through hole 602. In this scheme, go up movable seat 64 and wear to establish can relative fixing base 61 removal in square through hole 602 based on cylindrical optical axis 601, adopt the tangent scheme of cylindrical optical axis 601 outer wall and square through hole 602, its specific effect has specifically been explained in the above. The positioning roller 63 is rotatably mounted on the upper moving seat 64, the fixed seat 61 is provided with an adjusting cylinder 68 and a second spring 69, the adjusting cylinder 68 and the second spring 69 are respectively connected with two sides of the moving seat, and based on the adjusting cylinder 68 and the second spring 69, the positioning roller 63 can extend forwards or retreat relative to the swinging roller 66; based on the elastic force of the second spring 69, the positioning roller 63 is elastically pressed against the inner side surface of the abrasive belt 23.

Furthermore, the lining mechanism 6 in this case has the following three advantages over the belt liner mentioned in the background:

1. the positioning roller 63 and the oscillating roller 66 are in rolling contact with the sanding belt 23, and compared with a sanding belt lining plate adopted in the background art, the positioning roller 63 and the oscillating roller 66 can guide the sanding belt 23, so that the sanding belt can smoothly circulate, and the running resistance of the sanding belt is reduced.

2. When polishing an existing workpiece, the positioning roller 63 and the swinging roller 66 can ensure that the abrasive belt 23 is in line contact with the outer wall of the workpiece, i.e. the polishing position of the workpiece is necessarily tangent to the swinging roller 66. In this way, oscillating roller 66 concentrates belt 23 in polishing a small area of the workpiece whenever possible, which is more effective in polishing than the full-face contact polishing solution.

3. Oscillating roller 66 is able to oscillate about its axial middle in comparison to the belt liners used in the prior art. This solution simplifies the structure, but still enables the oscillating roller 66 to be adapted to the case of irregular workpiece machining, or of normal rectangular workpieces with errors in the end face machining. In contrast, the swing roller 66 swings based on the axial middle part thereof, and the lever-like manner can ensure that the abrasive belt 23 is attached to the polishing surface of the workpiece without adjusting the inclination thereof by means of a spring, so that the sensitivity is higher.

The specific execution steps of the workpiece polishing equipment are as follows:

step 1, the lock body is sent into a feeding rail 31.

And 2, the lock body is pushed to a feeding station by the feeding cylinder 32, and the clamping and rotating mechanism 5 clamps the lock body.

And 3, driving the clamping and rotating mechanism 5 and the lock body clamped on the clamping and rotating mechanism to be close to the abrasive belt 23 by the transverse moving pair 12, and pressing the lock body against the abrasive belt 23.

Step 4, the longitudinal moving pair 13 moves to ensure that the positioning roller 63 pushes the abrasive belt 23 against the lock body, and the abrasive belt 23 runs at a high speed; the clamping rotating mechanism 5 and the transverse moving pair 12 move simultaneously, only the arc surface of the lock body is attached to the abrasive belt 23 for polishing, and the blank cap on the lock body is polished off beyond the edge.

Step 5, the longitudinal moving pair 13 moves to ensure that the swinging roller 66 pushes the abrasive belt 23 against the lock body, and the abrasive belt 23 runs at a high speed; the clamping and rotating mechanism 5 and the transverse moving pair 12 move simultaneously, so that the outer contour of the lock body can be attached to an abrasive belt 23 for grinding at least one circle for polishing.

And 6, driving the clamping and rotating mechanism 5 and the lock body clamped on the clamping and rotating mechanism to gradually move away from the abrasive belt 23 by the transverse moving pair 12.

And 7, clamping the rotating mechanism 5 to open the lock body, and finishing blanking.

Example 2

The embodiment relates to a polishing assembly line, which comprises an overturning track, workpiece polishing equipment and end face polishing equipment; wherein the workpiece polishing apparatus is the workpiece polishing apparatus as described in example 1; the turning track can refer to a feeding mechanism described in Chinese patent application with the publication number of CN104786121B, the feeding track is divided into a plurality of stages of tracks connected end to end, and the lock body can be turned by switching between the two adjacent stages of tracks; the end face polishing equipment can adopt a grinding and polishing mechanism disclosed in the Chinese invention patent text with the publication number of CN104786121B, and the scheme adopts two groups of grinding and polishing mechanisms to respectively polish two end faces; or the end face polishing equipment adopts two groups of polishing wheels or two groups of polishing abrasive belts 23 which are arranged oppositely and horizontally. When the polishing assembly line runs, the whole circle of side wall of the lock body is polished by the workpiece polishing equipment recorded in the embodiment 1, then the lock body is sent back to the overturning rail and overturned by the conveying of the overturning rail, and two end faces are polished by the end face polishing equipment, so that the polishing of the whole outer wall of the lock body is completed.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. The workpiece polishing equipment comprises a rack (1), a polishing mechanism (2) and a feeding mechanism (3) which are arranged on the rack (1), and a clamping and rotating mechanism (5) which is used for clamping and positioning a workpiece and driving the workpiece to rotate; the polishing mechanism (2) comprises an abrasive belt (23) positioned and installed on the frame (1) and a polishing motor (24) for driving the abrasive belt (23) to move; the clamping and rotating mechanism (5) can receive a workpiece from the tail end of the feeding mechanism (3) and transversely move along the rack (1) to enable the workpiece to be close to or far away from the abrasive belt (23); the method is characterized in that: a gasket mechanism (6) acting on an abrasive belt (23) to compress the workpiece is further arranged on the rack (1) in the moving direction of the clamping and rotating mechanism (5), and at least one of the clamping and rotating mechanism (5) and the gasket mechanism (6) can move longitudinally relative to the rack (1); the lining mechanism (6) comprises a positioning roller (63) and a swinging roller (66) which are arranged up and down, and the positioning roller (63) is elastically pressed on the inner side surface of the abrasive belt (23) and is in rolling contact with the abrasive belt (23); the swing roller (66) is elastically pressed on the inner side surface of the abrasive belt (23) and is in rolling contact with the abrasive belt (23), and the swing roller (66) can swing along the axial middle part of the swing roller.

2. The workpiece polishing apparatus as set forth in claim 1, wherein: a longitudinal moving pair (13) is arranged on the rack (1), and the lining mechanism (6) is arranged on the longitudinal moving pair (13); the lining mechanism (6) moves longitudinally relative to the frame (1) based on the longitudinal moving pair (13).

3. The workpiece polishing apparatus as set forth in claim 2, wherein: the gasket mechanism (6) comprises a fixed seat (61) and an upper moving seat (64) connected with the fixed seat (61); the upper end part of the fixed seat (61) is provided with a square through hole (602), the upper moving seat (64) is provided with an optical axis which penetrates through the square through hole (602), and the outer wall of the cylindrical optical axis (601) is tangent to the square through hole (602); the positioning rolling shaft (63) is rotatably installed on the upper moving seat (64), the fixing seat (61) is provided with an adjusting cylinder (68) and a second spring (69), the adjusting cylinder (68) and the second spring (69) are respectively connected with two sides of the moving seat, and the positioning rolling shaft (63) can extend forwards or retreat relative to the swinging rolling shaft (66) based on the adjusting cylinder (68) and the second spring (69); based on the elastic force of the second spring (69), the positioning roller (63) is elastically pressed on the inner side surface of the abrasive belt (23).

4. The workpiece polishing apparatus as set forth in claim 2, wherein: the lining mechanism (6) comprises a fixed seat (61), a lower moving seat (62) connected with the fixed seat (61), and a swinging seat (65) hinged above the lower moving seat (62); a cylindrical optical axis (601) is arranged on the lower moving seat (62), and a square through hole (602) is arranged in the fixed seat (61); the cylindrical optical axis (601) penetrates through the square through hole (602), and the outer wall of the cylindrical optical axis (601) is tangent to the square through hole (602); a first spring (67) is arranged between the lower moving seat (62) and the fixed seat (61), two axial ends of the swinging roller (66) are rotationally positioned on the swinging seat (65), and the swinging roller (66) can swing along a central shaft (650) of the swinging seat (65); based on the elastic force of the first spring (67), the swinging roller (66) is elastically pressed on the inner side surface of the abrasive belt (23).

5. The workpiece polishing apparatus as set forth in claim 1, wherein: the polishing mechanism (2) comprises an abrasive belt (23) which is positioned and installed on the frame (1) through a driving wheel (21) and at least one group of driven wheels (22), a polishing motor (24) which drives the driving wheel (21) to rotate, and an eccentric driving component which drives the driven wheels (22) to eccentrically swing along the longitudinal direction; the driving wheel (21) and the driven wheel (22) are longitudinally arranged, one group of driven wheel (22) is arranged on the eccentric support (25), and the output end of the eccentric driving assembly is connected with the eccentric support (25).

6. The workpiece polishing apparatus as set forth in claim 5, wherein: the eccentric bracket (25) comprises a U-shaped frame (251) at the upper part and a rotating shaft (252) below the U-shaped frame (251); a shaft sleeve (11) is arranged on the machine frame (1), a rotating shaft (252) of the eccentric support (25) is positioned in the shaft sleeve (11), and two shaft ends of the driven wheel (22) are positioned on the U-shaped frame (251).

7. The workpiece polishing apparatus as set forth in claim 5, wherein: a rotating shaft (252) of the eccentric bracket (25) penetrates through the shaft sleeve (11) and penetrates out of the bottom of the shaft sleeve, and a supporting spring (253) is sleeved on the rotating shaft (252) between the shaft sleeve (11) and the U-shaped frame (251); the lower end part of the rotating shaft (252) is provided with a baffle plate (254), the outer side of the shaft sleeve (11) is provided with a pressing part (29) which can act on the baffle plate (254) and drive the eccentric support (25) to move downwards, the abrasive belt (23) is tensioned based on the elastic force of the supporting spring (253), and the abrasive belt can be rotated based on the pressing part (29).

8. The workpiece polishing apparatus as set forth in claim 1, wherein: the clamping and rotating mechanism (5) is arranged on the transverse moving pair (12), and the clamping and rotating mechanism (5) comprises a tool clamp, a driving motor (52) for driving the tool clamp to rotate, and a clamping cylinder (53) for driving the tool clamp to clamp or loosen the workpiece; the tool clamp comprises two clamping shafts (51) which are oppositely arranged, the clamping cylinder (53) drives at least one of the clamping shafts (51) to move along the axial direction of the clamping cylinder, so that the end parts of the two clamping shafts (51) are close to or far away from each other, and the driving motor (52) drives the two groups of clamping shafts (51) to synchronously rotate; an elastic part (57) and two positioning columns (58) are arranged on the end face of one clamping shaft (51), and the two positioning columns (58) can extend into two lock beam holes of the lock body; the output end of the elastic component (57) can extend out of the end face of the clamping shaft (51) or retract into the clamping shaft (51).

9. The workpiece polishing apparatus as set forth in claim 8, wherein: the clamping shaft (51) is sleeved with a clamping shaft sleeve (54), the clamping shaft sleeve (54) and the clamping shaft (51) are circumferentially linked and axially movably arranged, and the output end of the driving motor (52) is in transmission connection with the clamping shaft sleeve (54); the cylinder shaft of the clamping cylinder (53) is axially fixed with the clamping shaft, and the circumferential direction is not fixed; two groups of driving belt pulleys (55) are arranged on the transverse moving pair (12), and the two groups of driving belt pulleys (55) are connected and synchronized with clamping shaft sleeves (54) on the two clamping shafts (51) through belts (56); the two groups of driving belt pulleys (55) are connected through a coupler and are connected with an output shaft of the driving motor (52).

10. The workpiece polishing apparatus as set forth in claim 1, wherein: the feeding mechanism (3) comprises a feeding rail (31), a material receiving plate (33) which is connected to the tail end of the feeding rail in a bearing mode, and a feeding cylinder (32) of which the output end is connected to the material receiving plate (33); the tail end of the feeding rail (31) is provided with a longitudinally arranged blocking plate (34), and the material receiving plate (33) transversely moves below the blocking plate (34) and is spaced from the blocking plate by more than one workpiece and less than two workpieces.

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