Fine grinding device for blind hole key groove

Abstract

The utility model provides an accurate grinding device for a blind hole key groove, which belongs to the technical field of mechanical manufacturing and comprises a motor fixing and adjusting seat, a driving component and a fixing and cooling component. The cooling device has the advantages that the conveying head sprays out to cool the grinding wheel, external cooling air enters the connecting pipe through the air cooling connector and sprays out through the connector to cool the second belt wheel, and compressed air has attached pressure in a cavity of the second belt wheel while cooling components in the cavity of the second belt wheel. The sealing effect of the labyrinth at the grinding wheel is improved to a certain degree, the connecting shaft is fixed in the supporting base through a bearing and a locking part by arranging locking devices such as a wave washer, the locking devices such as the wave washer adopt a multi-layer wave washer combination form, the problem of axial thermal expansion and movement of the grinding wheel shaft due to high-speed rotation is effectively solved, and the service life of the grinding wheel shaft is prolonged. Therefore, the purposes of stable fixing and cooling are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical manufacturing technical field, concretely relates to a kind of precision grinding device for blind hole keyway. BACKGROUND

[0002] The machining of the inner hole keyway can generally adopt plug cutting, broaching, wire cutting, electric spark and other machining methods, through retrieval, the application number CN201621218574.7 discloses "a planing device specially used for small-diameter blind hole keyway", which records "the right side of the base is sequentially fastened with elastic pad, gasket and locking nut, the left side of the base is connected with pin shaft limiting, the end portion on the left side of the base has tool position groove for installing cutter body, and there is fastening hole between tool position groove and base and matched with fastening bolt, the planing device specially used for small-diameter blind hole keyway has the advantages of machining small-diameter blind hole keyway, meeting quality requirements, simple structure, low economic cost, convenient replacement of cutter body, convenient operation, especially suitable for single-piece small-batch accurate production and machining", the planing device for small-diameter blind hole keyway has the advantages of machining small-diameter blind hole keyway, meeting quality requirements, simple structure, low economic cost, convenient replacement of cutter body, convenient operation, especially suitable for single-piece small-batch accurate production and machining, but the above comparative document still has the following problems in actual use:

[0003] In actual use, it is inconvenient to drive, cannot be stably and quickly driven, the fixing and cooling effect of the tool bit is poor, and it is easy to overheat.

[0004] Therefore, it is of high practicality to provide a device capable of realizing stable driving, stably fixing the output head and having good cooling effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a precision grinding device for blind hole keyway, to solve the above technical problems.

[0006] The utility model embodiment provides a kind of precision grinding device for blind hole keyway, including motor fixed adjusting seat, drive assembly and fixed and cooling component.

[0007] Wherein, the top of motor fixed adjusting seat is movably connected with support plate;

[0008] The driving assembly comprises a high-speed main shaft motor arranged at the bottom of the inner wall of the motor fixing adjusting seat, the output shaft end of the high-speed main shaft motor is provided with a first belt pulley through the motor fixing adjusting seat and the supporting plate, one side of the top of the motor fixing adjusting seat is provided with a supporting base, a connecting groove is formed in the inner part of the supporting base, a belt tension pulley is rotatably connected to the middle of the inner wall of the supporting base, two bearings are arranged on the inner wall of one side of the supporting base, a connecting shaft is arranged in the bearings, a second belt pulley is arranged on the middle of the outer wall of the connecting shaft, and a plurality of wedge belts are drivingly connected to the outer walls of the first belt pulley and the second belt pulley.

[0009] The fixing and cooling assembly comprises a wave washer locking device arranged at the bottom of the connecting shaft, a cooling connector is fixedly connected to one side of the supporting base, a conveying pipe is sealingly communicated with one side of the cooling connector, a conveying head is sealingly communicated with the top of one side of the conveying pipe, an air cooling connector is fixedly connected to the bottom of one side of the supporting base, a connecting pipe is sealingly communicated with one side of the air cooling connector, a connecting head is sealingly communicated with the top of the connecting pipe, and a grinding wheel is arranged on the top of the connecting shaft and penetrates through the supporting base.

[0010] In one embodiment of the utility model, one side of the supporting base is provided with a workpiece rod.

[0011] In one embodiment of the utility model, the top of the conveying head is sealingly communicated with the top of the inner wall of the supporting base, and the end of the connecting head is sealingly communicated with the end of the connecting groove.

[0012] In one embodiment of the utility model, the outer wall of the belt tension pulley is drivingly connected with the plurality of wedge belts.

[0013] In one embodiment of the utility model, a plurality of fixing screws are arranged at the connecting part of the motor fixing adjusting seat and the supporting plate.

[0014] In one embodiment of the utility model, the motor fixing adjusting seat is provided with a fixing plate at both ends, a connecting screw rod is arranged in both the fixing plates, and a controller is arranged at the side corner of the motor fixing adjusting seat.

[0015] In one embodiment of the utility model, the high-speed main shaft motor is electrically connected with the controller, and the controller is electrically connected with an external power supply.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1) through the high-speed spindle motor is provided, convenient user needs to drive the grinding wheel rotation, can be through the controller to open the high-speed spindle motor, the high-speed spindle motor drives the first pulley rotation, the first pulley rotation will be driven by the second pulley rotation through the V-belt, V-belt rotation will be kept tension through the belt tensioner, the second pulley rotation will drive the connecting shaft rotation in the bearing, the second pulley rotation will drive the grinding wheel to rotate, in turn, polishing, to realize the purpose of stable drive, improve the stability;

[0018] 2) through the cooling joint, convenient user through the cooling joint and air cooling joint and external cooling gas or liquid connection, is the external gas through the cooling joint into the delivery pipe, in turn, through the delivery head to spray on the grinding wheel cooling, while the external cooling gas through the air cooling joint into the connecting pipe, and through the connecting head spray, on the second pulley cooling, in the chamber inside the second pulley cooling parts, compressed air in its cavity has the pressure, to a certain extent, improve the sealing effect of the grinding wheel, and through the locking device such as the wave washer is provided, the connecting shaft is fixed in the bearing and locking parts in the support base, the locking device such as the wave washer adopts the form of multilayer wave washer combination, effectively eliminates the problem of axial thermal expansion of the high-speed rotating grinding wheel shaft, so as to realize the purpose of stable fixation and cooling. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0020] Figure 1 is the structural diagram of the present application;

[0021] Figure 2 is the structural diagram of one end plane of the present application;

[0022] Figure 3 is the structural diagram of the support base of the present application.

[0023] In the drawings: 100, motor fixed adjusting seat; 110, support plate; 200, drive assembly; 210, high-speed spindle motor; 220, first pulley; 230, support base; 240, belt tensioner; 250, bearing; 260, connecting shaft; 270, second pulley; 280, V-belt; 300, fixed and cooling assembly; 310, locking device such as wave washer; 320, cooling joint; 330, delivery pipe; 340, delivery head; 350, air cooling joint; 360, connecting pipe; 370, connecting head; 380, grinding wheel; 400, workpiece rod; 500, fixed screw; 600, fixed plate; 700, connecting screw. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] EMBODIMENT

[0026] Please refer to Figures 1-3 A blind hole keyway fine grinding device, including motor fixed adjusting seat 100, drive assembly 200 and fixed and cooling assembly 300.

[0027] Specifically, please refer to Figure 1 The top of the motor fixed adjusting seat 100 is movably connected with a support plate 110.

[0028] Please refer to Figure 2 The drive assembly 200 includes a high-speed spindle motor 210 arranged on the inner wall bottom of the motor fixed adjusting seat 100. The output shaft end of the high-speed spindle motor 210 penetrates the motor fixed adjusting seat 100 and the support plate 110 and is provided with a first belt pulley 220. One side of the top of the motor fixed adjusting seat 100 is provided with a support base 230. A connecting groove is formed in the inside of the support base 230. A belt tension pulley 240 is rotatably connected to the middle of the inner wall of the support base 230. Two bearings 250 are arranged on one side of the inner wall of the support base 230. A connecting shaft 260 is arranged in the inside of the two bearings 250. A second belt pulley 270 is arranged on the middle of the outer wall of the connecting shaft 260. A multi-vee belt 280 is drivingly connected to the outer walls of the first belt pulley 220 and the second belt pulley 270.

[0029] In a specific embodiment, the high-speed spindle motor 210 is provided. When the abrasive wheel 380 needs to be driven to rotate, the user can turn on the high-speed spindle motor 210 through the controller, so that the high-speed spindle motor 210 drives the first belt pulley 220 to rotate. The first belt pulley 220 drives the second belt pulley 270 to rotate through the multi-vee belt 280. The multi-vee belt 280 keeps tension through the belt tension pulley 240 when rotating. The second belt pulley 270 drives the connecting shaft 260 to rotate in the bearing 250. The second belt pulley 270 drives the abrasive wheel 380 to rotate, and then performs grinding, so as to realize the purpose of stable driving and improve the stability.

[0030] Please refer to Figure 3The fixing and cooling assembly 300 comprises a locking device 310 such as a wave washer arranged at the bottom of the connecting shaft 260, one side of the supporting base 230 is fixedly connected with a cooling connector 320, one side of the cooling connector 320 is in sealed communication with a conveying pipe 330, one side of the top of the conveying pipe 330 is in sealed communication with a conveying head 340, one side of the bottom of the supporting base 230 is fixedly connected with an air cooling connector 350, one side of the air cooling connector 350 is in sealed communication with a connecting pipe 360, the top of the connecting pipe 360 is in sealed communication with a connecting head 370, and the top of the connecting shaft 260 is provided with a grinding wheel 380 penetrating through the supporting base 230.

[0031] In a specific embodiment, the cooling connector 320 is arranged, so that the user can connect the cooling connector 320 and the air cooling connector 350 with external cooling gas or liquid, the external gas enters the conveying pipe 330 through the cooling connector 320, and then is sprayed out through the conveying head 340 to cool the grinding wheel 380, and the external cooling gas enters the connecting pipe 360 through the air cooling connector 350, and is sprayed out through the connecting head 370 to cool the second belt pulley 270, so that the air in the cavity of the second belt pulley 270 has an additional pressure, and the sealing effect of the labyrinth at the grinding wheel 380 is improved to a certain extent, the connecting shaft 260 is fixed in the supporting base 230 through the bearing 250 and the locking device, the locking device 310 adopts a multi-layer wave washer combination form, the problem of axial thermal expansion of the high-speed rotating grinding wheel shaft is effectively eliminated, and the purposes of stable fixing and cooling are achieved.

[0032] Please refer to Figure 1 One side of the supporting base 230 is correspondingly provided with a workpiece rod 400.

[0033] In a specific embodiment, the workpiece rod 400 is arranged, so that the user can polish the blind hole key groove in the workpiece rod 400 through the grinding wheel 380, and the workpiece rod 400 can be stably polished to have higher precision.

[0034] Please refer to Figure 3 The top of the conveying head 340 is in sealed communication with the inner wall top of the supporting base 230, and the end of the connecting head 370 is in sealed communication with the end of the connecting groove.

[0035] In a specific embodiment, the conveying head 340 is arranged, so that the gas can be conveyed to the grinding wheel 380 to cool the grinding wheel 380, and the connecting head 370 can cool the parts at the second belt pulley 270.

[0036] Please refer to Figure 2 The outer wall of the belt tensioner 240 is in transmission connection with the multi-wedge belt 280.

[0037] In a specific embodiment, the belt tensioner 240 is provided, so that when the multi-wedge belt 280 is used, the multi-wedge belt 280 and the tensioning transmission can be used to achieve higher transmission efficiency.

[0038] Please refer to Figure 1 The connection between the motor fixing adjusting seat 100 and the support plate 110 is provided with a plurality of fixing screws 500.

[0039] In a specific embodiment, the fixing screw 500 is provided, so that the motor fixing adjusting seat 100 and the support plate 110 can be more stably connected together, so as to be more stable during use and improve the stability.

[0040] Please refer to Figure 1 Both ends of the motor fixing adjusting seat 100 are provided with fixing plates 600, the interiors of the two fixing plates 600 are provided with connecting screws 700, and one side corner of the motor fixing adjusting seat 100 is provided with a controller.

[0041] In a specific embodiment, the connecting screw 700 is provided, so that when in use, the device can be installed on other movable equipment through the cooperation of the connecting screw 700 and the fixing plate 600, so as to more stably and accurately perform fine grinding.

[0042] Please refer to Figure 2 The high-speed spindle motor 210 is electrically connected with the controller, and the controller is electrically connected with the external power supply.

[0043] In a specific embodiment, the controller is provided, so that the power-on control of the electrical equipment can be facilitated, and the electrical equipment can be powered on when needed, avoiding the condition that the electrical equipment cannot be powered on when needed.

[0044] In use, first, through the high-speed spindle motor 210 provided, the user can drive the grinding wheel 380 to rotate when needed, and the high-speed spindle motor 210 can be turned on through the controller to drive the first pulley 220 to rotate, the first pulley 220 rotates to drive the second pulley 270 to rotate through the multi-wedge belt 280, the multi-wedge belt 280 rotates to keep the tension through the belt tensioning wheel 240, then the second pulley 270 rotates to drive the connecting shaft 260 to rotate in the bearing 250, the second pulley 270 rotates to drive the grinding wheel 380 to rotate, and then polishing is carried out, so that the purpose of stable driving is achieved, the stability is improved, then through the cooling joint 320 provided, the user can connect the cooling joint 320 and the air cooling joint 350 with external cooling gas or liquid, the external gas enters the conveying pipe 330 through the cooling joint 320, and then is sprayed out through the delivery head 340 to cool the grinding wheel 380, while the external cooling gas enters the connecting pipe 360 through the air cooling joint 350, and is sprayed out through the connecting head 370 to cool the second pulley 270, the chamber inside the second pulley 270 is cooled, the compressed air has an additional pressure in the chamber, which improves the sealing effect of the labyrinth at the grinding wheel 380 to a certain extent, finally, through the wave washer locking device 310 provided, the connecting shaft 260 is fixed in the support base 230 through the bearing 250 and the locking part, the wave washer locking device 310 adopts a multi-layer wave washer combination form, effectively eliminates the problem of axial thermal expansion of the high-speed rotating grinding wheel shaft, and achieves the purposes of stable fixing and cooling.

[0045] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A precision grinding apparatus for blind hole keyways, characterized in that, Include: The motor fixed adjusting seat (100), the top of the motor fixed adjusting seat (100) is movably connected with a support plate (110); Drive assembly (200), the drive assembly (200) includes a high-speed spindle motor (210) arranged on the inner wall bottom of the motor fixed adjusting seat (100), the output shaft end of the high-speed spindle motor (210) is provided with a first belt pulley (220) penetrating the motor fixed adjusting seat (100) and the support plate (110), one side of the top of the motor fixed adjusting seat (100) is provided with a support base (230), a connecting groove is formed in the inner wall of the support base (230), a belt tensioner (240) is rotatably connected to the inner wall of the support base (230), two bearings (250) are arranged on the inner wall of one side of the support base (230), a connecting shaft (260) is arranged in the two bearings (250), a second belt pulley (270) is arranged on the outer wall of the connecting shaft (260), and a multi-cleat belt (280) is drivingly connected to the outer walls of the first belt pulley (220) and the second belt pulley (270); The fixed and cooling assembly (300) includes a wave washer locking device (310) arranged at the bottom of the connecting shaft (260), a cooling connector (320) is fixedly connected to one side of the support base (230), the cooling connector (320) is in sealed communication with a conveying pipe (330) on one side, the conveying pipe (330) is in sealed communication with a conveying head (340) on one side of the top, the support base (230) is fixedly connected with an air cooling connector (350) on one side of the bottom, the air cooling connector (350) is in sealed communication with a connecting pipe (360) on one side, the connecting pipe (360) is in sealed communication with a connecting head (370) on the top, and the connecting shaft (260) is provided with a grinding wheel (380) penetrating the support base (230) on the top.

2. The device for fine grinding of keyways of blind holes according to claim 1, characterized in that: A workpiece rod (400) is arranged on one side of the support base (230).

3. The device for fine grinding of blind keyway according to claim 2, characterized in that: The top of the conveying head (340) is in sealed communication with the inner wall top of the support base (230), and the end of the connecting head (370) is in sealed communication with the end of the connecting groove.

4. The blind keyway fine grinding apparatus according to claim 1, characterized by: The outer wall of the belt tensioner (240) is drivingly connected with the multi-cleat belt (280).

5. The blind keyway fine grinding apparatus according to claim 1, wherein: A plurality of fixing screws (500) are arranged at the connection between the motor fixed adjusting seat (100) and the support plate (110).

6. The device for fine grinding of a blind keyway according to claim 5, characterized in that: Both ends of the motor fixed adjusting seat (100) are provided with a fixed plate (600), and a connecting screw rod (700) is arranged in the inner wall of each fixed plate (600), and a controller is arranged at the corner of one side of the motor fixed adjusting seat (100).

7. The device for fine grinding of blind keyway according to claim 6, characterized in that: The high-speed spindle motor (210) is electrically connected with the controller, and the controller is electrically connected with an external power supply.

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