CN114800076B

CN114800076B - Grinding device with controllable contact range of shaft type excircle

Info

Publication number: CN114800076B
Application number: CN202210738443.5A
Authority: CN
Inventors: 郑晓珊; 吴尧
Original assignee: Nantong Xiaoyang Machinery Co ltd
Current assignee: Nantong Xiaoyang Machinery Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-09
Anticipated expiration: 2042-06-28
Also published as: CN114800076A

Abstract

The invention relates to the field of shaft grinding, in particular to a grinding device with controllable contact range of a shaft excircle, which comprises a clamping and rotating device for transversely fixing the shaft workpiece and a multi-surface grinding device for synchronously grinding the end surface and the excircle surface of the shaft workpiece, wherein the clamping and rotating device is arranged on a first movable sliding table, the multi-surface grinding device is arranged on a second movable sliding table, the multi-surface grinding device comprises a frame body, a belt type grinding mechanism, a disc type grinding set and a surface attaching mechanism for attaching the belt type grinding mechanism to the excircle surface of the shaft workpiece, the belt type grinding mechanism is enabled to be attached to the excircle surface of the shaft workpiece through the arrangement of the belt type grinding mechanism and the disc type grinding set and the surface attaching mechanism, the simultaneous grinding of the excircle surface and the step end surface of the shaft workpiece is realized, and the grinding effect of the shaft workpiece is improved, the grinding precision is improved.

Description

Grinding device with controllable contact range of shaft type excircle

Technical Field

The invention relates to the field of shaft grinding, in particular to a grinding device with controllable contact range of a shaft excircle.

Background

At present, when shaft workpieces are subjected to outer surface grinding, not only an outer circular surface but also an end surface needs to be machined, for example, a stepped shaft has steps, and the surface of the steps needs to be ground.

The currently disclosed Chinese patent CN202121201088.5 is an axle type cylindrical grinding device, which comprises a machine body, a grinding disc and a clamping assembly, wherein a workbench capable of moving transversely and a mounting seat capable of moving longitudinally are arranged on the machine body, a rotatable axle type workpiece is clamped on the clamping assembly, the grinding disc is rotatably arranged on the mounting seat, a grinding ring is arranged at the edge of the grinding disc, the outer circular surface of the grinding ring is an outer circular grinding surface, two end surfaces of the grinding ring are end surface grinding surfaces, the outer circular grinding surfaces are in contact grinding with the outer circular surface of the axle type workpiece, and the two end surface grinding surfaces are in contact grinding with the two end surfaces of the axle type workpiece.

According to the patent, the outer circle grinding surface and the two end surface grinding surfaces of the grinding ring grind the outer circle surface and the step surface of the shaft workpiece, however, the contact range between the grinding ring and the surface of the shaft workpiece is too small, which results in poor grinding effect, and therefore, a grinding device capable of regulating and controlling the contact area with the shaft workpiece is needed at present.

Disclosure of Invention

Based on this, it is necessary to provide a grinding device with a controllable contact range for the shaft type excircle, and the application promotes the attachment of the belt type grinding mechanism and the shaft type workpiece excircle surface through the arrangement of the belt type grinding mechanism and the disc type grinding group and the surface attachment mechanism, thereby realizing the simultaneous grinding of the excircle surface and the step end surface of the shaft type workpiece, improving the grinding effect of the shaft type workpiece, and improving the grinding precision.

In order to solve the problems of the prior art, the invention adopts the technical scheme that:

the invention provides a grinding device with controllable contact range of shaft excircle, comprising a clamping rotating device for transversely fixing a shaft workpiece and a multi-surface grinding device arranged beside the clamping rotating device and used for synchronously grinding the end surface and the excircle surface of the shaft workpiece, wherein the clamping rotating device is arranged on a first moving sliding table, the multi-surface grinding device is arranged on a second moving sliding table, the moving direction of the clamping rotating device on the first moving sliding table is vertical to the moving direction of the multi-surface grinding device on the second moving sliding table, the multi-surface grinding device comprises a frame body, a belt type grinding mechanism, a disc type grinding group and a surface attaching mechanism for attaching the belt type grinding mechanism to the excircle surface of the shaft workpiece, the frame body is arranged on the second moving sliding table in a sliding manner, the belt type grinding mechanism is arranged on the frame body, and the grinding disc type group is arranged on the belt type grinding mechanism, the surface attaching mechanism is arranged on the frame body and is connected with the belt type sanding mechanism.

Preferably, the belt type sanding mechanism comprises a belt, a transmission belt wheel, a first movable belt wheel, a second movable belt wheel, a tensioning wheel and soft film abrasive paper, the transmission belt wheel can be rotatably arranged on the frame body, a first rotating motor for driving the transmission belt wheel to rotate is arranged on the frame body, the axis direction of the transmission belt wheel is perpendicular to the axis direction of the shaft-type workpiece, the first movable belt wheel and the second movable belt wheel are movably arranged on the frame body and are both positioned on the frame body at a position close to the clamping rotating device, the first movable belt wheel can vertically move on the frame body, the second movable belt wheel can transversely move on the frame body, the tensioning wheel is movably arranged on the frame body and is positioned between the first movable belt wheel and the transmission belt wheel, the tensioning wheel can also vertically move on the frame body, the belt is sleeved on the transmission belt wheel, the first movable belt wheel, the second movable belt wheel and the tensioning wheel, the shape of mantle abrasive paper is the same with the belt, and mantle abrasive paper is laminated on the surface of belt along the marginal direction of belt to first movable band pulley, second movable band pulley and take-up pulley still all are connected with surface laminating mechanism.

Preferably, the disc type grinding group comprises four grinding discs, every two grinding discs are coaxially arranged on two end faces of the first movable belt wheel and the second movable belt wheel respectively, each grinding disc is fixed with the corresponding first movable belt wheel and the corresponding second movable belt wheel through bolts, and each grinding disc is further provided with an end face grinding face facing outwards and an outer circle grinding face aligned with the surface of the soft film abrasive paper sleeved on the corresponding first movable belt wheel and the corresponding second movable belt wheel.

Preferably, the surface attaching mechanism comprises a guide part used for guiding the first movable belt wheel, the second movable belt wheel and the tensioning wheel to move, a synchronizing part used for promoting the first movable belt wheel and the second movable belt wheel to synchronously move, and a driving part used for driving the synchronizing part and simultaneously driving the tensioning wheel to move, wherein the guide part, the synchronizing part and the driving part are all arranged on the frame body, and the synchronizing part and the driving part are connected with each other.

Preferably, the guide part has three first lantern rings and three second lantern rings, every first lantern ring and second lantern ring coaxial cover respectively are established on the wheel axle at first movable belt pulley and second movable belt pulley and take-up pulley both ends, first movable belt pulley and second movable belt pulley and take-up pulley all can rotate between corresponding first lantern ring and second lantern ring, all outwards extend on the first lantern ring of first movable belt pulley and second movable belt pulley has a guide bar, still be equipped with the guide pin bushing that is used for supplying the guide bar gliding on the support body, the tip of the guide bar on the first lantern ring on the first movable belt pulley extends vertically upwards, the tip level of the guide bar on the first lantern ring on the second movable belt pulley extends towards the direction of transmission band pulley.

Preferably, the synchronizing part has driving gear and driven gear and two push rods, driving gear and driven gear all pivoted setting are on the support body, intermeshing between driving gear and the driven gear, the one end of a push rod is coaxial and fixed cover is established on the tooth shaft of driving gear, the one end of another push rod is coaxial and fixed cover is established on the tooth shaft of driven gear, all outwards extend on every second lantern ring has a driving lever, and still all establish on the driving lever of the second lantern ring of corresponding first movable belt pulley and second movable belt pulley through seting up a bar cover oral cavity cover along its length direction on every push rod.

Preferably, the driving piece has depression bar and second rotating electrical machines, the second rotating electrical machines is fixed on the support body, coaxial transmission shaft that is equipped with on the output shaft of second rotating electrical machines, the fixed and coaxial cover of one end of depression bar is established on the transmission shaft, also establish on the driving lever of the second lantern ring of take-up pulley through seting up a bar cuff cover on the depression bar, vertical the breach of offering the first lantern ring on the confession take-up pulley and the removal of second lantern ring on the support body, all fix the cover on the transmission shaft and the tooth shaft of driving gear and be equipped with a gang wheel, and still the cover is equipped with a gang belt between two gang wheels.

Preferably, the outer disc of transmission band pulley, first movable band pulley, second movable band pulley and take-up pulley is even is equipped with a plurality of side tooth, and the internal surface of belt has the tooth mouth with the side tooth meshing, has the breakpoint on the mantle abrasive paper, and the surface of belt and the position department that is located the breakpoint of mantle abrasive paper still fixedly are equipped with a fixed block to the last lower surface of support body one end still is equipped with first contact switch and second contact switch respectively.

Preferably, the clamping and rotating device further comprises a fixed point sensing mechanism for ensuring that the distance between the axis of the first movable belt wheel and the axis of the shaft workpiece is equal to the distance between the axis of the second movable belt wheel and the axis of the shaft workpiece, the fixed point sensing mechanism comprises a first sensing point arranged at the end part of the wheel shaft of the first movable belt wheel and a second sensing point arranged at the end part of the wheel shaft of the second movable belt wheel, the clamping and rotating device is further provided with a first photoelectric sensor and a second photoelectric sensor which can sense the first sensing point and the second sensing point respectively, and the distance between the output point of the first photoelectric sensor and the axis of the shaft workpiece is also equal to the distance between the output point of the second photoelectric sensor and the axis of the shaft workpiece.

Preferably, still including the contact response mechanism that receives pressure when being used for responding to mantle abrasive paper contact axle type work piece, contact response mechanism is including the round bar, the round bar sets up between first movable belt pulley and second movable belt pulley, the axis direction of round bar is on a parallel with the axis direction of first movable belt pulley, the surface of round bar still with the internal surface contact of belt, the both ends of round bar coaxial cover respectively are equipped with a connecting rod, the one end of every connecting rod all extends towards the direction of support body and perpendicular to round bar axis, be equipped with the gliding sleeve of every connecting rod of confession on the support body, and the tip of one of them connecting rod still is connected with a pressure sensor, pressure sensor fixes on the support body.

Compared with the prior art, the beneficial effect of this application is:

1. this application makes the laminating of belt dull polish mechanism and the outer disc of axle type work piece through the setting of belt dull polish mechanism and disc dull polish group and surface laminating mechanism, has realized grinding when to outer disc of axle type work piece and step terminal surface to and improved the effect to the grinding of axle type work piece, promoted the grinding precision.

2. This application is through the transmission of belt, has realized that mantle abrasive paper makes its dull polish face wearing and tearing even when the outer disc surface of grinding axle type work piece, has avoided mantle abrasive paper a department wearing and tearing overweight, leads to the not good condition of grinding effect.

3. This application is through the setting of dull polish dish and the contact of the excircle grinding face of dull polish dish and mantle abrasive paper to the excircle face of axle type work piece simultaneously, has realized grinding to the excircle face of axle type work piece and step terminal surface simultaneously, has improved grinding efficiency.

4. This application has realized first movable belt pulley and second movable belt pulley towards the removal of axle type work piece through the cooperation between synchronizing part and the driving piece and the effect of guide, has made the outsourcing of mantle abrasive paper on the outer disc of axle type work piece, has increaseed the area of contact with the outer disc of axle type work piece, has improved grinding effect.

5. This application is through the response of first photoelectric sensor and second photoelectric sensor to corresponding first induction point and second induction point, has realized whether removing the judgement that targets in place to multiaspect grinding device, guarantees that first movable belt pulley and second movable belt pulley can contact the surface of axle type work piece simultaneously, has improved the degree of accuracy of mantle abrasive paper outsourcing on the disc outside axle type work piece.

Drawings

FIG. 1 is a first perspective view of the present application;

FIG. 2 is a schematic perspective view of the present application;

FIG. 3 is a schematic perspective view of the clamping device, the multi-surface grinding device and the shaft workpiece;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a schematic perspective view I of a shaft workpiece and a multi-surface grinding device;

FIG. 6 is a schematic perspective view of a shaft-like workpiece and a multi-surface grinding device;

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

FIG. 8 is a cross-sectional view taken at A-A of FIG. 7;

FIG. 9 is a front view of FIG. 6;

FIG. 10 is a rear view of FIG. 6;

FIG. 11 is a schematic perspective view of a multi-facet grinding apparatus;

FIG. 12 is an exploded perspective view of the multi-faceted grinding apparatus;

fig. 13 is an enlarged schematic view at B of fig. 9.

The reference numbers in the figures are:

1-clamping a rotating device; 1 a-shaft workpiece;

2-multi-surface grinding device; 2 a-a frame body; 2a1 — first contact switch; 2a 2-second contact switch; 2 b-a belt sanding mechanism; 2b 1-belt; 2b 2-transmission pulley; 2b 21-fixed block; 2b3 — first movable pulley; 2b4 — a second movable pulley; 2b 5-tensioning wheel; 2b 6-Soft film sandpaper; 2b7 — first rotating electrical machine; 2 c-disc sanding group; 2c 1-sanding disc;

3-a first moving ramp;

4-a second moving ramp;

5-a surface attaching mechanism; 5 a-a guide; 5a1 — first collar; 5a2 — second collar; 5a 21-deflector rod; 5a 3-guide bar; 5a 4-guide sleeve; 5 b-a synchronizing member; 5b 1-drive gear; 5b2 — driven gear; 5b3 — push rod; 5 c-a drive member; 5c 1-pressure bar; 5c2 — a second rotating electrical machine; 5c 3-drive shaft; 5c 4-linkage wheel; 5c 5-linkage belts;

6-a fixed point induction mechanism; 6 a-a first sensing point; 6 b-a second sensing point; 6 c-a first photosensor; 6 d-a second photosensor;

7-a contact sensing mechanism; 7 a-round bar; 7 b-a connecting rod; 7 c-a sleeve; 7 d-pressure sensor.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 1-6, the present application provides:

a grinding device with controllable contact range of shaft excircle comprises a clamping rotating device 1 used for transversely fixing a shaft workpiece 1a and a multi-surface grinding device 2 arranged beside the clamping rotating device 1 and used for synchronously grinding the end surface and the outer circular surface of the shaft workpiece 1a, wherein the clamping rotating device 1 is arranged on a first movable sliding table 3, the multi-surface grinding device 2 is arranged on a second movable sliding table 4, the moving direction of the clamping rotating device 1 on the first movable sliding table 3 is vertical to the moving direction of the multi-surface grinding device 2 on the second movable sliding table 4, the multi-surface grinding device 2 comprises a frame body 2a, a belt type grinding mechanism 2b, a disc type grinding set 2c and a surface laminating mechanism 5 used for laminating the belt type grinding mechanism 2b with the outer circular surface of the shaft workpiece 1a, the frame body 2a is arranged on the second movable sliding table 4 in a sliding manner, the belt type grinding mechanism 2b is arranged on the frame body 2a, disc sanding group 2c sets up on belt sanding mechanism 2b, and surface laminating mechanism 5 sets up on support body 2a and is connected with belt sanding mechanism 2 b.

Based on the above-described embodiments, the technical problem that the present application intends to solve is how to simultaneously grind the outer circumferential surface and the step end surface of the shaft-like workpiece 1 a. Therefore, in the application, an operator transversely places a shaft workpiece 1a on a clamping and rotating device 1, the shaft workpiece 1a is fixed, the clamping and rotating device 1 drives the shaft workpiece 1a to rotate at a high speed, a second movable sliding table 4 drives a multi-surface grinding device 2 to move towards the shaft workpiece 1a until a belt grinding mechanism 2b contacts the outer circular surface of the shaft workpiece 1a, a surface attaching mechanism 5 wraps the belt grinding mechanism 2b on the outer circular surface of the shaft workpiece 1a, the belt grinding mechanism 2b grinds the outer circular surface of the shaft workpiece 1a, the shaft workpiece 1a also moves along with the first movable sliding table 3 when the clamping and rotating device 1 is driven to move, the disc grinding set 2c stops contacting the step end surface of the shaft workpiece 1a, and the step end surface of the shaft workpiece 1a is ground while the outer circular surface of the shaft workpiece is ground under the action of the disc grinding set 2c, finally, after the shaft workpiece 1a is ground, an operator takes down the shaft workpiece 1 a.

Further, as shown in fig. 7 and 8:

the belt type sanding mechanism 2b comprises a belt 2b1, a transmission belt wheel 2b2, a first movable belt wheel 2b3, a second movable belt wheel 2b4, a tension wheel 2b5 and a soft film abrasive paper 2b6, the transmission belt wheel 2b2 is rotatably arranged on the frame body 2a, a first rotating motor 2b7 for driving the transmission belt wheel 2b2 to rotate is arranged on the frame body 2a, the axial direction of the transmission belt wheel 2b2 is perpendicular to the axial direction of the shaft-type workpiece 1a, the first movable belt wheel 2b3 and the second movable belt wheel 2b4 are movably arranged on the frame body 2a and are both positioned on the frame body 2a at a position close to the clamping rotating device 1, the first movable belt wheel 2b3 is capable of vertically moving on the frame body 2a, the second movable belt wheel 2b4 is capable of horizontally moving on the frame body 2a, the tension wheel 2b5 is movably arranged on the frame body 2a, and the tension wheel 2b5 is positioned between the first movable belt wheel 2b 2b and the first movable belt wheel 582 b 2b, the tensioning wheel 2b5 can also vertically move on the frame body 2a, the belt 2b1 is sleeved on the transmission belt wheel 2b2, the first movable belt wheel 2b3, the second movable belt wheel 2b4 and the tensioning wheel 2b5, the shape of the soft film abrasive paper 2b6 is the same as that of the belt 2b1, the soft film abrasive paper 2b6 is attached to the outer surface of the belt 2b1 along the edge direction of the belt 2b1, and the first movable belt wheel 2b3, the second movable belt wheel 2b4 and the tensioning wheel 2b5 are further connected with the surface attaching mechanism 5.

Based on the above-described embodiments, the technical problem to be solved by the present application is how to grind the outer circumferential surface of the shaft-like workpiece 1a by the belt-type sanding mechanism 2 b. Therefore, in the present application, the first rotating motor 2b7 drives the transmission pulley 2b2 to rotate, the belt 2b1 is driven on the first movable pulley 2b3, the second movable pulley 2b4 and the tension pulley 2b5 along with the rotation of the transmission belt, the belt 2b1 is also transmitted along with the high-speed rotation of the shaft-type workpiece 1a, the soft film abrasive paper 2b6 on the belt 2b1 grinds the outer circular surface of the shaft-type workpiece 1a, the transmission of the belt 2b1 enables the soft film abrasive paper 2b6 to be uniformly worn, the situation that the abrasion is too large due to the grinding of the shaft-type workpiece 1a and the abrasive paper effect is not high is avoided, after the soft film 2b6 contacts the outer circular surface of the shaft-type workpiece 1a, the surface attaching mechanism 5 drives the first movable pulley 2b3 and the second movable pulley 2b4 to move, so that the soft film 2b6 is wrapped on the outer circular surface of the shaft-type workpiece 1a, and the contact area is increased, when the first movable pulley 2b3 and the second movable pulley 2b4 are moved, the tension pulley 2b5 is also entrained, preventing the belt 2b1 from being stretched.

Further, as shown in fig. 9-11:

the disc type grinding group 2c is composed of four grinding discs 2c1, every two grinding discs 2c1 are respectively and coaxially arranged on two end faces of the first movable belt wheel 2b3 and the second movable belt wheel 2b4, each grinding disc 2c1 and the corresponding first movable belt wheel 2b3 and the corresponding second movable belt wheel 2b4 are fixed through bolts, and each grinding disc 2c1 is further provided with an end face grinding face facing outwards and an outer circle grinding face aligned with the surface of the soft film sand paper 2b6 sleeved on the corresponding first movable belt wheel 2b3 and the corresponding second movable belt wheel 2b 4.

Based on the above-described embodiments, the technical problem that the present application intends to solve is how to grind the stepped end surface of the shaft-like workpiece 1a with the soft film sandpaper 2b6 in the disc sanding group 2 c. Therefore, according to the present application, by the arrangement of the polishing disc 2c1 on the first movable pulley 2b3 and the second movable pulley 2b4, after the soft film abrasive paper 2b6 contacts the outer circular surface of the shaft workpiece 1a, the outer circular polishing surface of the polishing disc 2c1 also contacts the outer circular surface of the shaft workpiece 1a, after the shaft workpiece 1a is moved by the first movable sliding table 3, the step end surface of the shaft workpiece 1a contacts the end surface polishing surface of the polishing disc 2c1, and the outer circular surface and the step end surface of the shaft workpiece 1a are simultaneously polished.

Further, as shown in fig. 10 and 11:

the surface attaching mechanism 5 includes a guide 5a for guiding the first movable pulley 2b3, the second movable pulley 2b4 and the tension pulley 2b5 to move, a synchronizing member 5b for promoting the first movable pulley 2b3 and the second movable pulley 2b4 to move synchronously, and a driving member 5c for driving the synchronizing member 5b and simultaneously driving the tension pulley 2b5 to move, wherein the guide 5a, the synchronizing member 5b and the driving member 5c are all arranged on the frame body 2a, and the synchronizing member 5b and the driving member 5c are also connected with each other.

Based on the above embodiments, the technical problem that the present application intends to solve is how to cause the surface applying mechanism 5 to wrap the soft coated abrasive paper 2b6 on the outer circumferential surface of the shaft-like workpiece 1 a. Therefore, in the present application, the driving element 5c drives the synchronizing element 5b, while the driving element 5c drives the synchronizing element 5b, the idler pulley 2b5 is driven, the first movable pulley 2b3 and the second movable pulley 2b4 are driven by the synchronizing element 5b, while the idler pulley 2b5 moves downward, the belt 2b1 is loosened, the second movable pulley 2b4 moves toward the shaft-like workpiece 1a as the first movable pulley 2b3 moves downward, until the belt 2b3 and the second movable pulley 2b4 contact the outer circumferential surface of the shaft-like workpiece 1a and stop, after the first movable pulley 2b3 and the second movable pulley 2b4 contact the shaft-like workpiece 1a, the belt 2b1 portion between the first movable pulley 2b3 and the second movable pulley 2b4 is pressed against the outer circumferential surface of the shaft-like workpiece 1a, and the belt 2b1 is changed from a straight shape to a straight shape of the shaft-like workpiece 1a, the film coated abrasive paper 2b6 is wrapped on the outer circular surface of the shaft workpiece 1a, the belt 2b1 is also tightened again, because the first movable pulley 2b3 and the second movable pulley 2b4 move towards the shaft workpiece 1a, the movement of the first movable pulley 2b3 and the second movable pulley 2b4 is influenced by the tightened state of the belt 2b1, therefore, when the first movable pulley 2b3 and the second movable pulley 2b4 move towards the shaft workpiece 1a, the inward movement of the tension pulley 2b5 can loosen the belt 2b1, after the first movable pulley 2b3 and the second movable pulley 2b4 stretch the movement of the belt 2b1 outwards until the movement of the belt 2b 394627 stops, the belt 1 is also in the tightened state, the first movable pulley 2b5 and the second movable pulley 2b 462 b 465 move effectively to drive the first movable pulley 2b 5732 b3, the first movable pulley 2b3 and the second movable pulley 2b4 drive the stretching movement of the belt 2b1, so that the belt 2b1 can be tensioned again, the transmission pulley 2b2 can normally transmit the belt 2b1, when the first movable pulley 2b3 and the second movable pulley 2b4 move, the first movable pulley 2b3 and the second movable pulley 2b4 can accurately move towards the shaft-like workpiece 1a along with the guide of the guide 5a, the driving piece 5c drives the movement of the synchronizing piece 5b, because the first movable pulley 2b3, the second movable pulley 2b4 and the tensioning pulley 2b5 are connected through the synchronizing piece 5b, the movement of the synchronizing piece 5b drives the three to move synchronously, when the first movable pulley 2b3 and the second movable pulley 2b4 drive the belt 2b1 to move outwards, the tensioning pulley 2b5 also drives the belt 1 to move synchronously, the condition that the belt 2b1 is damaged due to overlarge tension force is avoided, on the contrary, when the first movable belt wheel 2b3 and the second movable belt wheel 2b4 drive the belt 2b1 to be loosened inwards, the tensioning wheel 2b5 moves outwards simultaneously to re-tension the belt 2b1, normal operation of the belt 2b1 is guaranteed, a partial area of the belt 2b1 can drive the soft film abrasive paper 2b6 to be attached to the outer circular surface of the shaft workpiece 1a in a fitting mode along with movement of the first movable belt wheel 2b3 and the second movable belt wheel 2b4, and the contact area between the soft film abrasive paper 2b6 and the shaft workpiece 1a is increased.

Further, as shown in fig. 9:

the guide 5a has three first collars 5a1 and three second collars 5a2, each of the first collars 5a1 and the second collars 5a2 is coaxially fitted over the axle at both ends of the first movable pulley 2b3, the second movable pulley 2b4 and the tension pulley 2b5, respectively, each of the first movable pulley 2b3, the second movable pulley 2b4 and the tension pulley 2b5 is capable of rotating between the corresponding first collar 5a1 and the second collar 5a2, each of the first movable pulley 2b3 and the second movable pulley 2b4 has a guide rod 5a3 extending outward from the first collar 5a1, the frame body 2a is further provided with a guide sleeve 5a4 for sliding the guide rod 5a 869, the guide rod 5a3 on the first collar 5a1 on the first movable pulley 2b3 has an end portion extending vertically, and the guide rod 865 a on the second movable pulley 2b3 has an end portion extending toward the horizontal transmission rod 2a 36 1a of the guide rod 367 a on the second movable pulley 2b 3.

Based on the above embodiment, when the first movable pulley 2b3 and the second movable pulley 2b4 are driven, the first movable pulley 2b3 and the second movable pulley 2b4 can normally rotate between the corresponding first collar 5a1 and second collar 5a2, and the guide rod 5a3 limits the sliding of the guide sleeve 5a4, so that the first movable pulley 2b3 and the second movable pulley 2b4 can only move in one direction, and finally the first movable pulley 2b3 and the second movable pulley 2b4 are in contact with the outer circular surface of the shaft workpiece 1 a.

Further, as shown in fig. 10:

the synchronizing piece 5b is provided with a driving gear 5b1, a driven gear 5b2 and two push rods 5b3, wherein the driving gear 5b1 and the driven gear 5b2 are both rotatably arranged on the frame body 2a, the driving gear 5b1 and the driven gear 5b2 are mutually meshed, one end of one push rod 5b3 is coaxially and fixedly sleeved on a tooth shaft of the driving gear 5b1, one end of the other push rod 5b3 is coaxially and fixedly sleeved on a tooth shaft of the driven gear 5b2, each second lantern ring 5a2 is provided with a shift lever 5a21 in an outward extending manner, and each push rod 5b3 is further sleeved on the shift lever 5a21 of the second lantern ring 5a2 corresponding to the first movable pulley 2b3 and the second movable pulley 2b4 through a strip-shaped sleeve opening in the length direction.

Based on the above embodiment, when the synchronizer 5b is driven by the driving member 5c, the driving gear 5b1 rotates to drive the driven gear 5b2 to rotate, and with the rotation of the driving gear 5b1 and the driven gear 5b2, the two push rods 5b3 simultaneously swing along the axes of the corresponding driving gear 5b1 and the driven gear 5b2, and under the arrangement that the strip-shaped sockets on the push rods 5b3 are sleeved on the shift rods 5a21, the first movable pulley 2b3 and the second movable pulley 2b4 are driven toward the shaft workpiece 1a, until the first movable pulley 2b3 and the second movable pulley 2b4 drive the sand paper 2b6 to wrap the outer circumferential surface of the shaft workpiece 1a and then stop.

Further, as shown in fig. 10-12:

the driving part 5c is provided with a pressure lever 5c1 and a second rotating motor 5c2, the second rotating motor 5c2 is fixed on the frame body 2a, an output shaft of the second rotating motor 5c2 is coaxially provided with a transmission shaft 5c3, one end of the pressure lever 5c1 is fixedly and coaxially sleeved on the transmission shaft 5c3, the pressure lever 5c1 is also sleeved on a shift lever 5a21 of a second lantern ring 5a2 of the tension wheel 2b5 through a strip-shaped sleeve opening, the tension wheel frame body 2a is vertically provided with a notch for the first lantern ring 5a1 and the second lantern ring 5a2 on the tension wheel 2b5 to move, the transmission shaft 5c3 and a gear shaft of the driving gear 5b1 are both fixedly sleeved with a linkage wheel 5c4, and a linkage belt 5c5 is further sleeved between the two linkage wheels 5c 4.

Based on the above embodiment, when the driving element 5c is driven, the second rotating motor 5c2 drives the pressing rod 5c1 to swing through the transmission shaft 5c3, because the pressing rod 5c1 is also sleeved on the shifting lever 5a21 of the second sleeve ring 5a2 of the tension pulley 2b5 through the opening of the strip-shaped sleeve opening, the tension pulley 2b5 is also driven, when the pressing rod 5c1 swings down, the tension pulley 2b5 loosens the belt 2b1, on the contrary, the tension pulley 2b5 tightens the belt 2b1, when the transmission shaft 5c3 rotates, the driving gear 5b1 is also driven through the matching of the linkage wheel 5c4 and the linkage belt 5c5, so that the synchronous movement of the tension pulley 2b5, the first movable pulley 2b3 and the second movable pulley 2b4 is realized.

Further, as shown in fig. 8:

the outer circular surfaces of the transmission belt wheel 2b2, the first movable belt wheel 2b3, the second movable belt wheel 2b4 and the tension wheel 2b5 are uniformly provided with a plurality of side teeth, the inner surface of the belt 2b1 is provided with a tooth opening meshed with the side teeth, the soft film abrasive paper 2b6 is provided with a break point, the outer surface of the belt 2b1 and the position of the break point of the soft film abrasive paper 2b6 are further fixedly provided with a fixed block 2b21, and the upper surface and the lower surface of one end of the frame body 2a are further respectively provided with a first contact switch 2a1 and a second contact switch 2a 2.

Based on the above embodiment, when the transmission pulley 2b2 drives the belt 2b1 to transmit, because the soft film sandpaper 2b6 is attached to the surface of the belt 2b1, there is a break point, so to avoid the situation that the break point contacts the shaft-type workpiece 1a, and the soft film sandpaper 2b6 is turned up, the break point is hidden by the fixed block 2b21, and the soft film sandpaper 2b6 is further fixed, after the fixed block 2b21 triggers the first contact switch 2a1, the first rotating motor 2b7 drives the transmission pulley 2b2 to rotate in the opposite direction, until the fixed block 2b21 triggers the second contact switch 2a2, the transmission pulley 2b2 changes the rotating direction again, so that the fixed block 2b21 moves between the first contact switch 2a1 and the second contact switch 2a2 in a circulating and reciprocating manner, and does not contact with the workpiece 1 a.

Further, as shown in fig. 4 and 9:

the fixed point sensing mechanism 6 is used for ensuring that the distance between the axis of the first movable belt wheel 2b3 and the axis of the shaft workpiece 1a is equal to the distance between the axis of the second movable belt wheel 2b4 and the axis of the shaft workpiece 1a, the fixed point sensing mechanism 6 comprises a first sensing point 6a arranged at the end part of the axle of the first movable belt wheel 2b3 and a second sensing point 6b arranged at the end part of the axle of the second movable belt wheel 2b4, a first photoelectric sensor 6c and a second photoelectric sensor 6d capable of sensing the first sensing point 6a and the second sensing point 6b are respectively arranged on the clamping and rotating device 1, and the distance between the output point of the first photoelectric sensor 6c and the axis of the shaft workpiece 1a is also equal to the distance between the output point of the second photoelectric sensor 6d and the axis of the workpiece 1 a.

Based on the above embodiments, the technical problem that the present application intends to solve is how to ensure that the distances between the first movable pulley 2b3 and the second movable pulley 2b4 and the shaft-like workpiece 1a are equal when the second movable sliding table 4 drives the multi-surface grinding device 2 to move toward the shaft-like workpiece 1 a. Therefore, in the present application, after the first and second

photoelectric sensors

6c and 6d sense the first and

second sensing points

6a and 6b, respectively, it is described that the distances between the first and second movable pulleys 2b3 and 2b4 and the shaft-type workpiece 1a are equal, and when the first and second movable pulleys 2b3 and 2b4 are moved toward the shaft-type workpiece 1a, the first and second movable pulleys 2b3 and 2b4 can simultaneously contact the outer circumferential surface of the shaft-type workpiece 1 a.

Further, as shown in fig. 13:

still include the contact induction mechanism 7 that is used for sensing pressure that receives when mantle sand paper 2b6 contact axle type work piece 1a, contact induction mechanism 7 is including round bar 7a, round bar 7a sets up between first movable belt wheel 2b3 and second movable belt wheel 2b4, the axis direction of round bar 7a is on a parallel with the axis direction of first movable belt wheel 2b3, the surface of round bar 7a still contacts with the internal surface of belt 2b1, the coaxial cover is equipped with a connecting rod 7b respectively at the both ends of round bar 7a, the one end of every connecting rod 7b all extends towards support body 2a and perpendicular to round bar 7a axis's direction, be equipped with the gliding sleeve 7c of every connecting rod 7b on support body 2a, and the tip of one of them connecting rod 7b still is connected with a pressure sensor 7d, pressure sensor 7d fixes on support body 2 a.

Based on the above embodiment, when the soft film abrasive paper 2b6 first contacts the outer circumferential surface of the shaft-like workpiece 1a, and the first photoelectric sensor 6c and the second photoelectric sensor 6d do not sense the first sensing point 6a and the second sensing point 6b, the second moving sliding table 4 drives the multi-face grinding device 2 to move continuously, so that the belt 2b1 is pressed too much and damaged, when the belt 2b1 is pressed, the round rod 7a is pushed, the connecting rod 7b connected to the round rod 7a moves in the sleeve 7c, the pressure sensor 7d senses the pressure brought by the connecting rod 7b, the pressure applied to the belt 2b1 is determined, when the pressure sensor 7d senses that the pressure value reaches the critical point, the first moving sliding table 3 stops driving, the first moving pulley 2b3 and the second moving pulley 2b4 continue to move toward the shaft-like workpiece 1a, until one of the first moving pulley 2b3 and the second moving pulley 2b4 contacts the shaft-like workpiece 1a first at the time of a, the soft film abrasive paper 2b6 can also be wrapped on the outer circumferential surface of the shaft-like workpiece 1 a.

This application impels the laminating of belt dull polish mechanism 2b and axle type work piece 1a excircle face through the setting of belt dull polish mechanism 2b and disc sanding group 2c and surperficial laminating mechanism 5, has realized grinding when to axle type work piece 1a excircle face and step terminal surface to and improved the effect to axle type work piece 1a grinding, promoted grinding precision.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A grinding device with controllable contact range of shaft excircles comprises a clamping and rotating device (1) used for transversely fixing shaft workpieces (1 a) and a multi-surface grinding device (2) arranged beside the clamping and rotating device (1) and used for synchronously grinding the end surfaces and the excircle surfaces of the shaft workpieces (1 a), wherein the clamping and rotating device (1) is arranged on a first movable sliding table (3), the multi-surface grinding device (2) is arranged on a second movable sliding table (4), and the moving direction of the clamping and rotating device (1) on the first movable sliding table (3) is vertical to the moving direction of the multi-surface grinding device (2) on the second movable sliding table (4), and is characterized in that the multi-surface grinding device (2) comprises a frame body (2 a), a belt grinding mechanism (2 b), a disc grinding group (2 c) and a surface fitting mechanism (5) used for fitting the belt grinding mechanism (2 b) with the excircle surfaces of the shaft workpieces (1 a), the frame body (2 a) is arranged on the second movable sliding table (4) in a sliding mode, the belt type sanding mechanism (2 b) is arranged on the frame body (2 a), the disc type sanding group (2 c) is arranged on the belt type sanding mechanism (2 b), and the surface attaching mechanism (5) is arranged on the frame body (2 a) and connected with the belt type sanding mechanism (2 b);

the belt type sanding mechanism (2 b) comprises a belt (2 b 1), a transmission belt wheel (2 b 2), a first movable belt wheel (2 b 3), a second movable belt wheel (2 b 4), a tension wheel (2 b 5) and a soft film abrasive paper (2 b 6), wherein the transmission belt wheel (2 b 2) can be rotatably arranged on the frame body (2 a), a first rotating motor (2 b 7) used for driving the transmission belt wheel (2 b 2) to rotate is arranged on the frame body (2 a), the axial direction of the transmission belt wheel (2 b 2) is parallel to the axial direction of a workpiece (1 a), the first movable belt wheel (2 b 3) and the second movable belt wheel (2 b 4) are movably arranged on the frame body (2 a) and are both positioned on the frame body (2 a) and close to the clamping rotating device (1), the first movable belt wheel (2 b 3) can vertically move on the frame body (2 a), and the second movable belt wheel (2 b 4) can transversely move on the frame body (362 a), the tensioning wheel (2 b 5) is movably arranged on the frame body (2 a), the tensioning wheel (2 b 5) is located between the first movable belt wheel (2 b 3) and the transmission belt wheel (2 b 2), the tensioning wheel (2 b 5) can also vertically move on the frame body (2 a), the belt (2 b 1) is sleeved on the transmission belt wheel (2 b 2), the first movable belt wheel (2 b 3), the second movable belt wheel (2 b 4) and the tensioning wheel (2 b 5), the soft film abrasive paper (2 b 6) and the belt (2 b 1) are identical in shape, the soft film abrasive paper (2 b 6) is attached to the outer surface of the belt (2 b 1) along the edge direction of the belt (2 b 1), and the first movable belt wheel (2 b 3), the second movable belt wheel (2 b 4) and the tensioning wheel (2 b 5) are also connected with the surface attaching mechanism (5);

the surface attaching mechanism (5) comprises a guide piece (5 a) used for guiding the first movable belt wheel (2 b 3), the second movable belt wheel (2 b 4) and the tensioning wheel (2 b 5) to move, a synchronizing piece (5 b) used for promoting the first movable belt wheel (2 b 3) and the second movable belt wheel (2 b 4) to synchronously move, and a driving piece (5 c) used for driving the synchronizing piece (5 b) and driving the tensioning wheel (2 b 5) to move, wherein the guide piece (5 a), the synchronizing piece (5 b) and the driving piece (5 c) are all arranged on the frame body (2 a), and the synchronizing piece (5 b) and the driving piece (5 c) are further connected with each other;

the guide piece (5 a) is provided with three first collars (5 a 1) and three second collars (5 a 2), each first collar (5 a 1) and each second collar (5 a 2) are respectively coaxially sleeved on the wheel shafts at two ends of the first movable pulley (2 b 3), the second movable pulley (2 b 4) and the tension pulley (2 b 5), the first movable pulley (2 b 3), the second movable pulley (2 b 4) and the tension pulley (2 b 5) can rotate between the corresponding first collar (5 a 1) and the corresponding second collar (5 a 2), the first collars (5 a 1) of the first movable pulley (2 b 3) and the second movable pulley (2 b 4) are respectively provided with a guide rod (5 a 3) extending outwards, the frame body (2 a) is further provided with a guide sleeve (5 a 3) for the guide rod (5 a 3) to slide, and the guide rod (465 a 1) on the first collar (5 a 465 b 465 a) extends upwards from the end part (5 a) of the first movable pulley (5 a 465 a), the end of the guide rod (5 a 3) on the first collar (5 a 1) on the second movable pulley (2 b 4) extends horizontally towards the direction of the transmission pulley (2 b 2);

the synchronizing piece (5 b) is provided with a driving gear (5 b 1), a driven gear (5 b 2) and two push rods (5 b 3), the driving gear (5 b 1) and the driven gear (5 b 2) are both rotatably arranged on the frame body (2 a), the driving gear (5 b 1) and the driven gear (5 b 2) are meshed with each other, one end of one push rod (5 b 3) is coaxial and fixedly sleeved on a tooth shaft of the driving gear (5 b 1), one end of the other push rod (5 b 3) is coaxial and fixedly sleeved on a tooth shaft of the driven gear (5 b 2), and a deflector rod (5 a 21) extends outwards from each second lantern ring (5 a 2), each push rod (5 b 3) is sleeved on a driving lever (5 a 21) of a second lantern ring (5 a 2) of the corresponding first movable belt wheel (2 b 3) and the second movable belt wheel (2 b 4) through a strip-shaped sleeve opening arranged along the length direction of the push rod;

the driving piece (5 c) is provided with a pressure lever (5 c 1) and a second rotating motor (5 c 2), the second rotating motor (5 c 2) is fixed on the frame body (2 a), an output shaft of the second rotating motor (5 c 2) is coaxially provided with a transmission shaft (5 c 3), one end of the pressure lever (5 c 1) is fixed and coaxially sleeved on the transmission shaft (5 c 3), the pressure lever (5 c 1) is also sleeved on a deflector rod (5 a 21) of a second lantern ring (5 a 2) of the tension wheel (2 b 5) through a strip-shaped sleeve opening, the frame body (2 a) is vertically provided with a notch for the first lantern ring (5 a 1) and a second lantern ring (5 a 2) on the tension wheel (2 b 5) to move, a linkage wheel (5 c 4) is fixedly sleeved on the transmission shaft (5 c 3) and a gear shaft of the driving gear (5 b 1), and a linkage belt (5 c 5) is sleeved between the two linkage wheels (5 c 4).

2. The grinding device with controllable contact range for the excircle of the shaft type according to claim 1, characterized in that the disc type grinding group (2 c) is composed of four grinding discs (2 c 1), each two grinding discs (2 c 1) are respectively coaxially arranged on two end faces of the first movable pulley (2 b 3) and the second movable pulley (2 b 4), each grinding disc (2 c 1) and the corresponding first movable pulley (2 b 3) and the corresponding second movable pulley (2 b 4) are fixed by bolts, and each grinding disc (2 c 1) is further provided with an end face grinding face facing to the outer side and an excircle grinding face aligned with the surface of the soft film sand paper (2 b 6) sleeved on the corresponding first movable pulley (2 b 3) and the corresponding second movable pulley (2 b 4).

3. The grinding device with the controllable contact range of the shaft type excircle according to claim 1, characterized in that the outer circular surfaces of the transmission pulley (2 b 2), the first movable pulley (2 b 3), the second movable pulley (2 b 4) and the tension pulley (2 b 5) are uniformly provided with a plurality of side teeth, the inner surface of the belt (2 b 1) is provided with tooth openings meshed with the side teeth, the soft film abrasive paper (2 b 6) is provided with break points, a fixed block (2 b 21) is fixedly arranged on the outer surface of the belt (2 b 1) and at the break points of the soft film abrasive paper (2 b 6), and the upper surface and the lower surface of one end of the frame body (2 a) are respectively provided with a first contact switch (2 a 1) and a second contact switch (2 a 2).

4. The grinding device for the controllable contact range of the shaft excircle according to claim 1, characterized in that it further includes a fixed point sensing mechanism (6) for ensuring that the distance between the axis of the first movable pulley (2 b 3) and the axis of the shaft workpiece (1 a) is equal to the distance between the axis of the second movable pulley (2 b 4) and the axis of the shaft workpiece (1 a), the fixed point sensing mechanism (6) includes a first sensing point (6 a) disposed at the end of the axle of the first movable pulley (2 b 3) and a second sensing point (6 b) disposed at the end of the axle of the second movable pulley (2 b 4), the clamping and rotating device (1) is further provided with a first photoelectric sensor (6 c) and a second photoelectric sensor (6 d) capable of sensing the first sensing point (6 a) and the second sensing point (6 b), respectively, and the distance between the output point of the first photoelectric sensor (6 c) and the axis of the shaft workpiece (1 a) is equal to the second photoelectric sensor The distance between the output point of the sensor (6 d) and the axis of the shaft workpiece (1 a).

5. The grinding device with controllable contact range for the excircle of the shaft type according to claim 1, further comprising a contact sensing mechanism (7) for sensing pressure applied when the soft film abrasive paper (2 b 6) contacts the shaft type workpiece (1 a), wherein the contact sensing mechanism (7) comprises a round rod (7 a), the round rod (7 a) is arranged between the first movable belt wheel (2 b 3) and the second movable belt wheel (2 b 4), the axial direction of the round rod (7 a) is parallel to the axial direction of the first movable belt wheel (2 b 3), the surface of the round rod (7 a) is further in contact with the inner surface of the belt (2 b 1), two ends of the round rod (7 a) are respectively and coaxially sleeved with a connecting rod (7 b), one end of each connecting rod (7 b) extends towards the frame body (2 a) and is perpendicular to the axial direction of the round rod (7 a), a sleeve (7 c) for each connecting rod (7 b) to slide is arranged on the frame body (2 a), and the end part of one connecting rod (7 b) is also connected with a pressure sensor (7 d), and the pressure sensor (7 d) is fixed on the frame body (2 a).