CN216066714U

CN216066714U - Double-ended grinding machine

Info

Publication number: CN216066714U
Application number: CN202121957061.9U
Authority: CN
Inventors: 许亮; 薛超; 左子铭; 李季; 唐湘平
Original assignee: Yuhuan Cnc Machine Tool Co ltd
Current assignee: Yuhuan Cnc Machine Tool Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-03-18
Anticipated expiration: 2031-08-19

Abstract

A double-end-face grinding machine comprises a box body, wherein an upper grinding head component and a lower grinding head component are arranged in the box body, the two grinding head components are respectively connected with two grinding head feeding mechanisms, the grinding head components are driven by an electric spindle, the grinding head feeding mechanisms drive the grinding head components to move up and down relative to the box body through a ball screw and a ball nut, and a grinding wheel replacing window is arranged at the rear part of the box body. The utility model adopts the high-rigidity large-torque electric main shaft to replace the common mechanical main shaft, variable frequency motor and synchronous belt structure, thereby not only greatly improving the rotating speed of the grinding wheel, simplifying the mechanical structure and saving the space. The window is arranged at the rear part of the box body to replace the grinding wheel, a hinge of a feeding seat in front of the machine tool is omitted, and the feeding seat is fixedly installed, so that automatic feeding is convenient to realize. The high-rigidity guide rail and the precise ball screw are adopted, so that the load born by the original screw rod from the outside of the main shaft is transferred to the high-rigidity guide rail, and the influence of the abrasion of the screw rod on the feeding precision is reduced.

Description

Double-ended grinding machine

Technical Field

The utility model relates to a grinding machine, in particular to a double-ended grinding machine.

Background

The traditional double-end-face grinding machine adopts a mode that a common grinding head and an external variable frequency motor are driven by a belt or a synchronous belt, so that the rotating speed of a grinding wheel is low, and the dynamic balance is poor.

The variable frequency motor of the upper and lower grinding heads of the traditional double-ended grinding machine is arranged at the rear part of a machine tool box body, and the grinding wheel of the grinding machine can be replaced only from a front door when replaced, so that a front feeding seat needs to adopt a hinge type movable mechanism to conveniently open and detach the grinding wheel, and the position precision of a feeding part is poor due to a movable connection mode.

The main shaft feeding drives the grinding head to move up and down through a hollow large-diameter ball screw and a worm gear structure which are concentric with the main shaft, the screw rod is abraded after continuous strong grinding, and the main shaft feeding precision is poor.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide the double-end-face grinding machine with high grinding wheel rotating speed and high spindle feeding precision.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a double-ended grinding machine, includes the box, two bistrique parts about being equipped with in the box, two bistrique parts are connected with two bistrique feed mechanisms respectively, and bistrique part passes through electric spindle drive, and bistrique feed mechanism drives the relative box of bistrique part through ball and ball nut and reciprocates.

Further, the grinding head component comprises a spindle box and an electric spindle arranged in the spindle box, a grinding wheel is arranged on the electric spindle, a guide rail is arranged on the spindle box, a sliding block is arranged on the box, and the grinding head component moves up and down along the box through the sliding block and the guide rail.

Furthermore, a nut seat is arranged on the spindle box, and a ball nut is connected with the nut seat to drive the grinding head component to move up and down.

Further, bistrique feed mechanism still includes servo motor and speed reducer, the speed reducer is connected with ball, and ball is used for driving ball nut and reciprocates.

Further, balance cylinders are symmetrically arranged on two sides of the grinding head component.

Furthermore, three groups of adjusting mechanisms are arranged on the box body, each group of adjusting mechanism comprises a supporting screw rod and an adjusting nut, the supporting screw rods and the adjusting nuts can rotate relatively, and the angle of the grinding wheel can be adjusted through the three groups of adjusting mechanisms which are not on the same straight line.

Furthermore, the central axes of the electric main shafts of the two grinding head components are positioned on the same straight line.

Further, a feeding component is arranged in the box body and comprises a feeding table, a feeding clamp and a feeding center turntable.

Further, be equipped with the part of repairing in the box, the part of repairing includes servo motor, drive belt, trimming shaft and repairing disc, the drive belt is used for connecting servo motor and trimming shaft, repairing disc installs on trimming shaft, repairing disc semicircular in shape, repairing disc's circumference is equipped with the polylith and repairs the oilstone, the upper surface of repairing disc is protruding to the one end of repairing the oilstone, and the lower surface of repairing disc is protruding to the other end of repairing the oilstone.

Furthermore, the rear part of the box body is provided with a grinding wheel replacing window, a grinding wheel disassembling mechanism is arranged in the box body and comprises two rows of tracks with rolling wheels, and the height of the tracks can be adjusted.

The utility model adopts the high-rigidity large-torque electric main shaft to replace the common mechanical main shaft, variable frequency motor and synchronous belt structure, thereby not only greatly improving the use rotating speed of the grinding wheel, simplifying the mechanical structure and saving the space.

According to the utility model, the window is arranged at the rear part of the box body for replacing the grinding wheel, a hinge of a feeding seat in front of a machine tool is eliminated, and the feeding seat is fixedly installed, so that automatic feeding is conveniently realized.

The utility model adopts the high-rigidity guide rail and the precise ball screw, so that the load born by the original screw from the outside of the main shaft is transferred to the high-rigidity guide rail, and the influence of the wear of the screw on the feeding precision is reduced.

Drawings

FIG. 1 is a schematic front view of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic view of the back side of the overall structure of the embodiment of the present invention;

fig. 3 is a schematic view of an upper grinding head assembly and an upper grinding head feeding mechanism according to an embodiment of the present invention;

FIG. 4 is a sectional view of the embodiment A shown in FIG. 3;

FIG. 5 is a schematic view of a feeding structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an upper grinding head assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a grinding wheel removing mechanism in the embodiment of the present invention;

FIG. 8 is a schematic structural view of a support group in the wheel dismounting mechanism of FIG. 7;

FIG. 9 is a schematic structural view of an adjustment mechanism in an embodiment of the present invention;

fig. 10 is a schematic structural view of a finishing member in an embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-2, the present embodiment includes a housing 1 formed by an upper housing and a lower housing, two grinding head components, namely, an upper grinding head component 3 and a lower grinding head component 4, are disposed in the housing 1 in a vertically symmetrical manner, the upper grinding head component 3 is driven by an upper grinding head feeding mechanism 5 to move, and the lower grinding head component 4 is driven by a lower grinding head feeding mechanism (not shown in the figure) to move. The upper grinding head component 3 and the lower grinding head component 4 have the same structure, and the upper grinding head feeding mechanism and the lower grinding head feeding mechanism have the same structure and are in mirror image symmetry in a horizontal plane.

As shown in fig. 6, the upper grinding head component 3 includes a main spindle box 31 and an electric spindle 32 arranged in the main spindle box 31, a grinding wheel 33 is arranged on the electric spindle 32, a guide rail 311 is arranged on the main spindle box 31, a slide block 11 is arranged on the box body 1, and the upper grinding head component 3 moves up and down along the box body 1 through the slide block 11 and the guide rail 311. And a grinding wheel replacing window 12 is arranged at the rear part of the box body 1. The window is arranged at the rear part of the box body to replace the grinding wheel, a hinge of a feeding seat in front of the machine tool is omitted, and the feeding seat is fixedly installed, so that automatic feeding is convenient to realize.

The electric spindle 32 adopts a synchronous motor, the electric spindle 32 is provided with a water cooling pipe 321 and a water return port 322, the water cooling pipe is arranged at the central axis position of the electric spindle 32, so that the rotating speed of the electric spindle 32 can reach 1500rpm, which is twice higher than that of the traditional mechanical spindle 750rpm, the structure of the electric spindle is more compact, a transmission chain is reduced, vibration caused by the transmission chain is eliminated, and the grinding efficiency and precision are improved.

As shown in fig. 3-4, the upper grinding head feeding mechanism 5 includes a servo motor 51, a speed reducer 52, a ball screw 53 and a ball nut 54, the servo motor 51 is connected with the speed reducer 52, the speed reducer 52 drives the ball screw 53 through a coupler 55 to drive the ball nut 54 to move up and down, the ball nut 54 is connected with a nut seat 34 arranged on the main spindle box 31, the ball nut 54 pushes the upper grinding head component 3 to move up and down along the box 1, and position detection is performed through the upper grinding head component 3 of the grating ruler, so that closed-loop control is formed, and the positioning accuracy and the response speed of the upper grinding head component 3 are improved.

In this embodiment, the balance cylinders 6 are symmetrically disposed on both sides of the upper head unit 3 and the lower head unit 4. The most vertical downward gravity can be offset, so that the load of the grinding head feeding mechanism is greatly reduced, and the positioning precision of the grinding head component is further improved under the vibration absorption effect of the balance cylinder 6.

As shown in fig. 5, in this embodiment, a feeding component 9 is disposed in the box body 1, the feeding component 9 includes a feeding table 91, a feeding clamp 92 and a feeding center turntable 93, and the feeding component 9 drives the feeding clamp 92 by using a servo motor and a precision speed reducer, so that the rotation precision of the feeding clamp 92 can be better improved, and the automatic material loading and unloading mechanism can be better docked.

As shown in fig. 7 to 8, in the present embodiment, the wheel removing mechanism 7 is configured as two-row rail with rollers and is fixed to the box 1, and the wheel removing mechanism 7 is provided with a plurality of sets of support groups 71, a main support plate 74, support seats 73 placed on the main support plate 74, and a plurality of sets of support wheels 72 distributed on the support seats 73. The supporting set 71 is composed of a bottom plate 711, a pressing plate 712, a supporting rod 713, an adjusting flange 714 and a nut 715, the adjusting flange 714 is provided with an internal threaded hole and is in threaded connection with the supporting rod 713, the spherical shape of the lower end of the supporting rod 713 is in fit rotation with the bottom plate 711 and the inner spherical surface of the pressing plate 712, and the adjusting flange 714 can be lifted, so that the overall level of the 6 supporting sets 71 is adjusted, and the grinding wheel is placed on the supporting sets to slide in a balanced manner without clamping stagnation.

When the grinding wheel needs to be installed, the grinding wheel is placed on the two rows of supporting rollers 72 by a traveling crane or a lifting trolley (not shown), and the grinding wheel can be slightly pushed to slide to the lower end of the main shaft in the machine tool, so that the installation can be carried out. The dismantlement order is opposite with the installation, compares the mode of traditional detachable steel pipe support frame and fluid pressure type arm, and this mode is safer, convenient and low cost. And the auxiliary lifting trolley is added, so that the grinding wheel can be more conveniently carried, loaded and unloaded.

As shown in fig. 9 and 4, in the present embodiment, 3 adjusting mechanisms 8 are provided on the box body 1, and each adjusting mechanism 8 includes a concave washer 81, a convex washer 82, an adjusting nut 83, and a support screw 84. The lower end of the supporting screw 84 is fixed on the lower box body through a nut, the upper box body is provided with three bosses and holes, the three bosses and the three holes are respectively sleeved on the adjusting mechanism 8, the upper surface and the lower surface of the supporting screw 84 are respectively provided with a group of concave washers 81, convex washers 82 and adjusting nuts 83, the lower end of the supporting screw 84 is in clearance fit with the lower box body through a washer 85 and a locking nut 86, and the upper end of the supporting screw 84 is in clearance fit with the upper box body. When adjustment is required, the upper adjustment nut 83 is loosened and then the lower adjustment nut 83 is rotated, the upper case is raised when rotated clockwise and lowered when rotated counterclockwise. Because of the two groups of spherical surfaces consisting of the two groups of spherical concave washers 81 and the convex washers 82, the upper box body cannot be distorted during adjustment. After the angle is adjusted to the required angle, the adjusting nut 83 at the upper end is locked, and the structure achieves the effects of adjusting the angle of the box body and locking and fixing after adjustment. The adjusting mechanism 8 is designed to be three-point supporting adjustment by adopting the principle that three points which are not on the same straight line determine a plane, can conveniently adjust the high positions of the three points of the box body, and further adjusts the angle of the upper grinding wheel and the lower grinding wheel which are fixed with the box body.

As shown in fig. 10, in the present embodiment, a grinding wheel dressing member 10 is provided in the case 1 for dressing the grinding wheel 33, and the grinding wheel dressing member 10 is located at the grinding wheel 33. The trimming component 10 comprises a servo motor 101, a transmission belt 102, a trimming shaft 103 and a trimming disc 104, wherein the transmission belt 102 is used for connecting the servo motor 101 and the trimming shaft 103, the trimming disc 104 is installed on the trimming shaft 103, the trimming disc 104 is semicircular, a plurality of trimming oilstones 105 are arranged on the circumference of the trimming disc 104, one end of each trimming oilstone 105 protrudes out of the upper surface of the trimming disc 104, the other end of each trimming oilstone 105 protrudes out of the lower surface of the trimming disc 104, one end of each trimming oilstone 105 is in contact with an upper grinding wheel during trimming, and the other end of each trimming oilstone 105 is in contact with a lower grinding wheel.

Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.

Claims

1. The utility model provides a double-ended grinding machine, includes the box, two bistrique parts about being equipped with in the box, its characterized in that: the two grinding head components are respectively connected with the two grinding head feeding mechanisms, the grinding head components are driven by the electric spindle, and the grinding head feeding mechanisms drive the grinding head components to move up and down relative to the box body through the ball screws and the ball nuts.

2. The parallel surface grinding machine of claim 1, wherein: the grinding head component comprises a spindle box and an electric spindle arranged in the spindle box, a grinding wheel is arranged on the electric spindle, a guide rail is arranged on the spindle box, a sliding block is arranged on the box body, and the grinding head component moves up and down along the box body through the sliding block and the guide rail.

3. The parallel surface grinding machine of claim 1, wherein: the grinding head component comprises a spindle box, wherein a nut seat is arranged on the spindle box, and a ball nut is connected with the nut seat to drive the grinding head component to move up and down.

4. A parallel surface grinding machine as claimed in any one of claims 1 to 3 wherein: the grinding head feeding mechanism further comprises a servo motor and a speed reducer, the speed reducer is connected with a ball screw, and the ball screw is used for driving a ball nut to move up and down.

5. The parallel surface grinding machine of claim 4, wherein: and balance cylinders are symmetrically arranged on two sides of the grinding head component.

6. The parallel surface grinding machine of claim 1, wherein: the grinding wheel angle adjusting device is characterized in that three groups of adjusting mechanisms are arranged on the box body, each group of adjusting mechanism comprises a supporting screw rod and an adjusting nut, the supporting screw rods and the adjusting nuts can rotate relatively, and the angle of the grinding wheel can be adjusted through the adjusting mechanisms in three different positions.

7. The parallel surface grinding machine of claim 1, wherein: the central axes of the electric main shafts of the two grinding head components are positioned on the same straight line.

8. A parallel surface grinding machine as claimed in any one of claims 1 to 3 wherein: and a feeding component is arranged in the box body and comprises a feeding table, a feeding clamp and a feeding center turntable.

9. A parallel surface grinding machine as claimed in any one of claims 1 to 3 wherein: be equipped with the part of repairing in the box, the part of repairing includes servo motor, drive belt, repaiies axle and repaiies the dish, the drive belt is used for connecting servo motor and repaiies the axle, it installs on the axle of repairing to repair the dish, it is semi-circular to repair the dish, the circumference of repairing the dish is equipped with the polylith and repairs the oilstone, the protruding upper surface of repairing the dish of one end of repairing the oilstone, the protruding lower surface of repairing the dish of the other end of repairing the oilstone.

10. The parallel surface grinding machine of claim 1, wherein: the grinding wheel replacing device is characterized in that a grinding wheel replacing window is arranged at the rear part of the box body, a grinding wheel disassembling mechanism is arranged in the box body, the grinding wheel disassembling mechanism comprises two rows of rails with idler wheels, and the height of the rails is adjustable.