CN211516946U

CN211516946U - Precision surface grinding machine

Info

Publication number: CN211516946U
Application number: CN201922145460.4U
Authority: CN
Inventors: 程通
Original assignee: Yangyi Electronic Technology Ningbo Co ltd
Current assignee: Yangyi Electronic Technology Ningbo Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-09-18
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to the technical field of mechanical grinding machines, in particular to a precise surface grinding machine, which comprises a machine body, a placing table, a driving mechanism, a clamping mechanism and a grinding mechanism, wherein the placing table is connected on the machine body in a sliding way, the upper surface of the placing table is provided with a placing groove, the placing groove is filled with a vertical supporting column for supporting a workpiece, a first spring is connected between the bottom of the supporting column and the placing groove, and the supporting columns are mutually clung and can relatively slide in the vertical direction; the clamping mechanism comprises a clamping head seat fixedly mounted on the placing table, a telescopic cylinder is mounted on the clamping head seat, the output end of the telescopic cylinder is connected with a pressing plate used for pressing the workpiece, and the pressing plate is located right above the placing groove. A pressing plate of the clamping mechanism is matched with a supporting column in the plane of the placing platform to fix the workpiece; the supporting column which is not abutted against the bottom of the workpiece surrounds the side face of the workpiece, the workpiece is limited, and the workpiece is prevented from deviating when the grinding wheel grinds the workpiece.

Description

Precision surface grinding machine

Technical Field

The utility model relates to a mechanical grinding machine technical field especially relates to an accurate flat grinder.

Background

The surface grinding machine is a kind of grinding machine for grinding the surface of workpiece or forming surface, and is widely used for grinding the end surface of workpiece.

When a workpiece plane is ground by a surface grinding machine, a rectangular electromagnetic worktable is generally adopted for sucking or a universal fixture is adopted for clamping the workpiece, so that the workpiece is positioned on the worktable and reciprocates in the horizontal direction. And in the process of reciprocating the workpiece in the horizontal direction, the workpiece is abutted against a grinding wheel which is fixed on the grinding machine and rotates at a high speed, and the workpiece is rubbed with one side surface of the grinding wheel, so that the end surface of the workpiece is ground.

In the prior art, the universal fixture is mainly a three-jaw chuck, a four-jaw independent chuck, a flat tongs, a dividing head, a rotary table and the like, and because most of the surfaces of workpieces are different in shape and uneven, the contact surface of the universal fixture for clamping the workpieces is small, so that the clamping is not firm. In addition, in the process of grinding the workpiece by the grinding wheel, the workpiece is deviated due to the horizontal friction force generated by the contact between the grinding wheel and the workpiece, so that the grinding precision of the workpiece is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an accurate surface grinding machine to overcome prior art's surface grinding machine at the in-process of grinding work piece, universal fixturing is insecure to the work piece centre gripping, easily leads to the work piece to take place the problem of skew.

In order to achieve the above purpose, the basic scheme of the utility model is as follows: a precise surface grinding machine comprises a machine body, a clamping mechanism and a grinding mechanism for grinding a workpiece, wherein a placing table for placing the workpiece is connected to the machine body in a sliding manner, and a driving mechanism for driving the placing table to move in a reciprocating manner in the horizontal direction is mounted on the machine body; the upper surface of the placing table is provided with a placing groove for accommodating a workpiece, the placing groove is filled with a plurality of vertical supporting columns for supporting the workpiece, a first spring is connected between the bottom of each supporting column and the placing groove, and the supporting columns are mutually attached and can relatively slide in the vertical direction; the clamping mechanism comprises a clamp head seat fixedly mounted on the placing table, a telescopic cylinder is mounted on the clamp head seat, the output end of the telescopic cylinder is connected with a pressing plate used for pressing the workpiece, and the pressing plate is located right above the placing groove.

Furthermore, vertical pressing rods for pressing the workpiece are densely distributed on the lower surface of the pressing plate, a second spring is connected between the top of each pressing rod and the pressing plate, and the pressing rods are mutually attached and can slide relatively in the vertical direction.

Further, be equipped with the holding tank that is used for holding the platform of placing on the lathe bed, the position that the holding tank is close to the notch is equipped with a set of slide rail that is parallel to each other, the both sides of placing the platform be equipped with slide rail sliding fit's spout.

Further, the grinding mechanism comprises a grinding wheel and a first motor, the first motor is fixedly mounted on the upper surface of the machine body, and the grinding wheel is detachably mounted on an output shaft of the first motor.

Furthermore, a reference plate for positioning the workpiece is arranged on the lathe bed, the reference plate is provided with a reference surface capable of abutting against a to-be-ground plane of the workpiece, and the reference surface is flush with the working end face of the grinding wheel.

Further, actuating mechanism is including installing the second motor at the lathe bed, the output shaft coaxial coupling of second motor has the screw rod, the screw rod rotates to run through and stretches into in the holding tank to with place a threaded connection.

Compared with the prior art, the scheme has the beneficial effects that:

1. the work piece is placed in the standing groove of placing the platform, moves down with the support column of work piece bottom contact, and the side around the lower part of work piece is tightly not contradicted with the bottom of work piece to carry on spacingly to the work piece, avoid the emery wheel to take place the skew because of producing frictional force when grinding the work piece.

2. The pressing rod on the pressing plate is driven by the telescopic cylinder to compress the workpiece, and the supporting column at the bottom of the workpiece is matched to fix the workpiece in the vertical direction.

3. The press rod which is not abutted against the upper surface of the workpiece on the press plate tightly surrounds the side surface of the upper part of the workpiece, so that the workpiece is limited, and the grinding wheel is prevented from deviating due to friction force generated during grinding of the workpiece.

4. Because the reference surface of the reference plate is flush with the working end surface of the grinding wheel, and the to-be-ground plane of the workpiece is abutted against the reference surface of the reference plate, the to-be-ground plane of the workpiece and the working end surface of the grinding wheel can be positioned, and the grinding precision is improved.

5. The second motor drives the placing table to move on the rail at a constant speed and stably through the screw rod, so that the workpiece fixed on the placing table keeps moving at a constant speed and stably on a road section in contact with the grinding wheel, the grinding wheel is enabled to polish a workpiece grinding plane more smoothly, and the quality of workpiece grinding is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic structural view of the main viewing direction of the present invention;

fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.

Reference numerals in the drawings of the specification include: the grinding machine comprises a machine body 1, an accommodating groove 2, a slide rail 21, a second motor 3, a screw 31, a placing table 4, a supporting column 41, a first spring 42, a chuck seat 5, a telescopic cylinder 51, a pressing plate 6, a pressing rod 61, a second spring 62, a reference plate 7, a first motor 8, a grinding wheel 81, an installation seat 82 and a workpiece 9.

Detailed Description

The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:

example (b):

a precision surface grinding machine is shown in figure 1 and comprises a machine body 1, a clamping mechanism and a grinding mechanism for grinding a workpiece 9, wherein the machine body 1 is provided with an accommodating groove 2 and a placing table 4 for placing the workpiece 9, the lower half part of the placing table 4 is accommodated in the accommodating groove 2, a group of mutually parallel slide rails 21 are arranged at the position, close to a notch, of the accommodating groove 2, and slide grooves in sliding fit with the slide rails 21 are arranged at two sides of the placing table 4; the bed body 1 is provided with a driving mechanism for driving the placing table 4 to reciprocate along the slide rail 21; the driving mechanism comprises a second motor 3 installed on the lathe bed 1, an output shaft of the second motor 3 is coaxially connected with a screw rod 31 through a coupler, and the screw rod 31 rotates to penetrate through the accommodating groove 2 and is in threaded connection with the lower half part of the placing table 4.

As shown in fig. 1, the grinding mechanism includes a grinding wheel 81, a first motor 8, and a flange plate sleeved on a main shaft of the motor, the flange plate is used for fixing the grinding wheel 81, and the first motor 8 is fixedly mounted on the upper surface of the bed 1 through a mounting seat 82. The lathe bed 1 is provided with a reference plate 7 for positioning the workpiece 9, the reference plate 7 is provided with a reference surface capable of abutting against a plane to be ground of the workpiece 9, and the reference surface is flush with the working end surface of the grinding wheel 81.

As shown in fig. 2 and 3, the upper surface of the placing table 4 is provided with a placing groove for accommodating the workpiece 9, the placing groove is in an open structure relative to the side surface of the reference plate 7, a plurality of vertical supporting columns 41 for supporting the workpiece 9 are filled in the placing groove, a first spring 42 is connected between the bottom of each supporting column 41 and the placing groove, and the supporting columns 41 are mutually attached and can slide relatively in the vertical direction.

As shown in fig. 1, the clamping mechanism includes a clamping head seat 5 fixedly installed on the placing table 4, a telescopic cylinder 51 is installed on the clamping head seat 5, an output end of the telescopic cylinder 51 is connected with a pressing plate 6 for pressing the workpiece 9, and the pressing plate 6 is located right above the placing groove. Vertical pressing rods 61 for pressing the workpiece 9 are densely distributed on the lower surface of the pressing plate 6, a second spring 62 is connected between the tops of the pressing rods 61 and the pressing plate 6, and the pressing rods 61 are closely attached to each other and can slide relatively in the vertical direction.

The specific implementation mode of the scheme is as follows: when the grinding device is used, an operator takes a workpiece 9 to be ground, the plane of the workpiece 9 to be ground is abutted against the reference surface of the reference plate 7, the workpiece 9 is enabled to move downwards along the reference surface of the reference plate 7 until the workpiece 9 is gradually accommodated in the placing groove in the downward moving process, downward pressure is generated on the supporting column 41 which is abutted against the bottom of the workpiece 9 in the placing groove, and the first spring 42 at the bottom of the supporting column 41 is enabled to be stressed and compressed; and the part of the supporting column 41 in the placing groove which is not abutted against the bottom of the workpiece 9 tightly surrounds the side of the lower part of the workpiece 9, and the side of the supporting column 41 closest to the side of the workpiece 9 is abutted against the side of the workpiece 9, thereby limiting the workpiece 9. Because the datum plane of the datum plate 7 is flush with the working end face of the grinding wheel 81, and the plane to be ground of the workpiece 9 is abutted against the datum plane of the datum plate 7, in the process of placing the workpiece 9 in the placing groove, the positioning between the plane to be ground of the workpiece 9 and the working end face of the grinding wheel 81 and the primary fixing of the workpiece 9 on the placing table 4 are completed simultaneously.

Then, by controlling the telescopic cylinder 51 on the chuck base 5, the output end of the telescopic cylinder 51 drives the pressing plate 6 located above the workpiece 9 to gradually move to the position of the workpiece 9, the lower end surface of the pressing rod 61 densely distributed on the lower surface of the pressing plate 6 is abutted to the upper surface of the workpiece 9, downward pressure is generated on the workpiece 9, the second spring 62 at the top of the pressing rod 61 is stressed and compressed, and the workpiece 9 is pressed and fixed by the second spring 62 in the vertical direction through the pressure generated by the pressing rod 61 and is fixed in the vertical direction together with the supporting column 41 at the bottom of the workpiece 9 on the workpiece 9. And the part of the pressing rod 61 of the pressing plate 6 which is not abutted against the upper surface of the workpiece 9 tightly surrounds the side surface of the upper part of the workpiece 9, and the side surface of the pressing rod 61 closest to the side surface of the workpiece 9 is abutted against the side surface of the workpiece 9, thereby limiting the workpiece 9.

After the workpiece 9 is positioned and fixed, the first motor 8 and the second motor 3 are started, and the first motor 8 drives the grinding wheel 81 to rotate at a high speed; the second motor 3 alternately rotates forwards and backwards, the screw rod 31 is driven to rotate synchronously, the screw rod 31 drives the placing table 4 to move along the slide rail 21 in the rotating process, the workpiece 9 clamped and fixed on the placing table 4 moves synchronously, the workpiece 9 reciprocates along the direction of the slide rail 21 along with the forward rotation and the backward rotation of the second motor 3, the surface to be ground of the workpiece 9 is abutted against the working end surface of the grinding wheel 81 in the reciprocating process of the workpiece 9, and the grinding wheel 81 grinds the workpiece 9. In the grinding process, the pressing rod 61 surrounding the side surface of the upper part of the workpiece 9 and the supporting rod surrounding the side surface of the lower part of the workpiece 9 always keep limiting on the workpiece 9, so that the workpiece 9 cannot deviate due to the friction force generated between the workpiece 9 and the grinding wheel 81, and the grinding precision of the grinding wheel 81 on the workpiece 9 is effectively improved.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a precision surface grinding machine, includes lathe bed (1), fixture and is used for the grinding mechanism of grinding work piece (9), sliding connection has the platform (4) of placing that are used for placing work piece (9) on lathe bed (1), and installs on lathe bed (1) and be used for the drive to place platform (4) reciprocating motion's on the horizontal direction actuating mechanism, its characterized in that: the upper surface of the placing table (4) is provided with a placing groove for accommodating a workpiece (9), the placing groove is filled with a plurality of vertical supporting columns (41) for supporting the workpiece (9), a first spring (42) is connected between the bottom of each supporting column (41) and the placing groove, and the supporting columns (41) are mutually attached and can relatively slide in the vertical direction; the clamping mechanism comprises a clamp head seat (5) fixedly mounted on the placing table (4), a telescopic cylinder (51) is mounted on the clamp head seat (5), the output end of the telescopic cylinder (51) is connected with a pressing plate (6) used for pressing the workpiece (9), and the pressing plate (6) is located right above the placing groove.

2. A precision surface grinding machine according to claim 1, characterized in that: vertical pressing rods (61) used for pressing the workpiece (9) are densely distributed on the lower surface of the pressing plate (6), a second spring (62) is connected between the top of each pressing rod (61) and the pressing plate (6), and the pressing rods (61) are mutually attached and can slide relatively in the vertical direction.

3. A precision surface grinding machine according to claim 1, characterized in that: the lathe bed (1) is provided with an accommodating groove (2) used for accommodating the placing table (4), a group of mutually parallel sliding rails (21) are arranged at the positions, close to the notches, of the accommodating groove (2), and sliding grooves in sliding fit with the sliding rails (21) are formed in the two sides of the placing table (4).

4. A precision surface grinding machine according to claim 1, characterized in that: the grinding mechanism comprises a grinding wheel (81) and a first motor (8), the first motor (8) is fixedly installed on the upper surface of the lathe bed (1), and the grinding wheel (81) is detachably installed on an output shaft of the first motor (8).

5. The precision surface grinding machine according to claim 4, wherein: the grinding machine is characterized in that a reference plate (7) used for positioning a workpiece (9) is arranged on the machine body (1), the reference plate (7) is provided with a reference surface capable of abutting against a to-be-ground plane of the workpiece (9), and the reference surface is flush with the working end face of the grinding wheel (81).

6. A precision surface grinding machine according to claim 1, characterized in that: the driving mechanism comprises a second motor (3) installed on the lathe bed (1), an output shaft of the second motor (3) is coaxially connected with a screw rod (31), and the screw rod (31) rotates to penetrate through the accommodating groove (2) and is in threaded connection with the placing table (4).