CN210281885U

CN210281885U - High-precision center frame for grinding machine

Info

Publication number: CN210281885U
Application number: CN201920549766.3U
Authority: CN
Inventors: 朱芽娣
Original assignee: 李兵兵
Current assignee: SHAOXING XIANGMING MACHINERY TECHNOLOGY Co.,Ltd.
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-04-10
Anticipated expiration: 2029-04-22

Abstract

The utility model provides a high accuracy centre frame for grinding machine, including support, box, outward turning disc, inner turning disc, grip block, lower baffle, overhead gage and locating component, the inside of box is rotated and is connected with outward turning disc, the inside of box and the inside rotation that is located outward turning disc are connected with the inner turning disc, the inside rotation of box is connected with evenly distributed's three grip block, the inside of inner turning disc and the equal fixedly connected with lower baffle in left side that is located every grip block. The workpiece is fixed on the center frame through the three clamping plates, the inner rotary disc is rotated by rotating the screw rod on the left side, the position of the clamping plates is adjusted through the lower baffle plate, the outer rotary disc is rotated by rotating the screw rod on the right side, the clamping plates are fixed through the upper baffle plate, the clamping plates, the lower baffle plate on the left side of the clamping plates and the upper baffle plate on the right side of the clamping plates form a supporting assembly, and the three groups of supporting assemblies move synchronously, so that the center frame is guaranteed to be concentric with the workpiece all the time when the clamping range is adjusted, and.

Description

High-precision center frame for grinding machine

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a high-precision center frame for a grinding machine.

Background

When cutting, grinding and other operations are carried out on cylindrical workpieces such as a spindle and the like, the workpieces need to be clamped on a grinding machine by using a center frame, the shaft diameters of the workpieces are supported on two center frames or one center frame and a headstock chuck, the traditional center frame is generally in a two-point support or three-point support type, two or three bolt support rods are mounted on a support, the workpieces are clamped and fixed by screwing the bolt support rods inwards, each support rod is manually adjusted by a technical worker, the aim of concentricity of the clamping center and the spindle is achieved, the adjustment accuracy depends on the hand feeling and experience of the technical worker, the adjustment process is complicated, and the adjustment accuracy is unstable.

In view of the above, the present invention provides a high-precision center frame for a grinding machine, which is improved in view of the conventional structure and defects, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a high-precision center frame for a grinding machine, which aims to solve the problems that the traditional center frame is troublesome in precision adjustment process and cannot well ensure the adjustment precision.

The invention relates to a purpose and an effect of a high-precision center frame for a grinding machine, which are achieved by the following specific technical means:

the utility model provides a high accuracy centre frame for grinding machine, includes the support, the box, the outer capstan, the inner turntable, ball subassembly, the grip block, the pivot hole, lower baffle, the overhead gage, locating component, the positioning seat, the screw rod, the ejector pad, the screw removes hole and diaphragm orifice.

The top of the bracket is fixedly connected with a box body, the interior of the box body is rotatably connected with an outer rotating disc, the interior of the box body, which is positioned in the outer rotating disc, is rotatably connected with an inner rotating disc, the outer rotating disc and the inner rotating disc are rotatably connected with the box body through ball assemblies, the interior of the box body is rotatably connected with three clamping plates which are uniformly distributed, the clamping plates are positioned in the outer rotating disc and the inner rotating disc, the front wall and the rear wall of the outer rotating disc are respectively provided with a rotating shaft hole corresponding to a connecting rotating shaft of the clamping plates, the interior of the inner rotating disc, which is positioned at the left side of each clamping plate, is fixedly connected with a lower baffle plate, the interior of the outer rotating disc, which is positioned at the right side of each clamping plate, is fixedly connected with an upper baffle plate, the exterior of the box body, which is positioned at the left side of the lower baffle plate and the, the top screw thread of positioning seat is pegged graft and is had the screw rod that extends to the box inside, two the bottom in the screw rod outside just is located the left side of the lower baffle of the top and the right side of the overhead gage respectively and all rotates and is connected with the ejector pad, two screw holes that correspond with the screw rod are seted up in the outside of box, set up two removal holes that correspond with the screw rod on the bounding wall of outer carousel outer lane, set up three plate holes that correspond with the grip block on the bounding wall of inner and outer circles of inner turntable.

Furthermore, ball assemblies are mounted on the front face and the back face of the outer rotating disc and the front face and the back face of the inner rotating disc, two groups of ball grooves corresponding to the ball assemblies are formed in the inner front wall and the inner rear wall of the box body, and the ball assemblies are arranged to facilitate rotation of the outer rotating disc and the inner rotating disc.

Further, the one end that the pivot was kept away from to the grip block extends to the inside of inner rotating disk, and the terminal surface is circular-arc, has avoided the sharp-pointed friction of edges and corners, makes better and the work piece contact of grip block ability.

Furthermore, the lower baffle and the upper baffle are both arc plates, the clamping plate, the lower baffle on the left side of the clamping plate and the upper baffle on the right side of the clamping plate form a supporting assembly, the position relations of all parts in the three groups of supporting assemblies are the same, the movement synchronism of the three groups of supporting assemblies is guaranteed, and the concentricity of the three clamping plates and a workpiece is further guaranteed.

Furthermore, the top end of the screw rod is provided with a handle, the outer side of the screw rod and the outer side of the push block are provided with threads, and the outer side of the screw rod and the inner side of the push block are provided with a baffle ring, so that the position of the push block is fixed.

Furthermore, two ejector pads are respectively in slope shape with the one side of lower baffle and last baffle contact for the ejector pad can be better extrudeed down baffle and last baffle, and the left side the spout has all been seted up to the below at the ejector pad front and the back and the top at the right side ejector pad front and the back, all be provided with the draw runner that corresponds with left side ejector pad on the interior antetheca of inner rotary disk and the interior back wall, all be provided with the draw runner that corresponds with right side ejector pad on the interior antetheca of outer rotary disk and the interior back wall, play location and guide effect to the ejector pad.

Furthermore, the outer rotating disc, the inner rotating disc, the lower baffle and the upper baffle are all positioned on the same axis.

Advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. the cylindrical workpiece is fixed on the center frame through the three clamping plates, the inner rotary disc is rotated by rotating the screw rod on the left side, the position of the clamping plates is adjusted through the lower baffle plate on the inner rotary disc, the clamping range is adjusted, the outer rotary disc is rotated by rotating the screw rod on the right side, the position of the clamping plates is fixed through the upper baffle plate on the outer rotary disc, the clamping plates, the lower baffle plate on the left side of the clamping plates and the upper baffle plate on the right side of the clamping plates form a supporting assembly, the three groups of supporting assemblies synchronously move, and therefore the center frame is guaranteed to be concentric with the workpiece all the time when the clamping.

2. Because the baffle all is fixed on the inner turntable under three, consequently rotatory left screw rod and remove the lower baffle of top through the ejector pad, can make three baffle synchronous motion down to promote three holder simultaneously rotatory, and in the same way, three overhead gage all fixes on the outer turntable, therefore rotatory right side screw rod can make three overhead gage grasp the baffle simultaneously, through baffle and the position of overhead gage fixed grasp board down, this centre frame not only easy operation, stable in structure moreover.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is a perspective view of the box structure of the present invention;

FIG. 3 is a perspective view of the outer turntable structure of the present invention;

FIG. 4 is a perspective view of an inner turntable structure of the present invention;

FIG. 5 is a front view of the connection structure of the outer rotating disk and the inner rotating disk according to the present invention;

fig. 6 is a left side sectional view of the coupling structure of the case, the outer rotating disk and the inner rotating disk according to the present invention.

In the figure: 1-support, 2-box, 3-outer rotating disc, 4-inner rotating disc, 5-ball assembly, 6-clamping plate, 7-rotating shaft hole, 8-lower baffle, 9-upper baffle, 10-positioning assembly, 101-positioning seat, 102-screw rod, 103-push block, 11-screw hole, 12-moving hole and 13-plate hole.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Example (b):

as shown in figures 1 to 6:

the invention provides a high-precision center frame for a grinding machine, which comprises a support 1, a box body 2, an outer rotating disc 3, an inner rotating disc 4, a ball assembly 5, a clamping plate 6, a rotating shaft hole 7, a lower baffle plate 8, an upper baffle plate 9, a positioning assembly 10, a positioning seat 101, a screw rod 102, a push block 103, a screw hole 11, a moving hole 12 and a plate hole 13.

The top of the bracket 1 is fixedly connected with a box body 2, the inside of the box body 2 is rotatably connected with an outer rotating disk 3, the inside of the box body 2 and the inside positioned on the outer rotating disk 3 are rotatably connected with an inner rotating disk 4, the outer rotating disk 3 and the inner rotating disk 4 are both rotatably connected with the box body 2 through ball components 5, the front and the back of the outer rotating disk 3 and the inner rotating disk 4 are both provided with the ball components 5, the inner front wall and the inner back wall of the box body 2 are both provided with two groups of ball grooves corresponding to the ball components 5, the rotation of the outer rotating disk 3 and the inner rotating disk 4 is facilitated by arranging the ball components 5, the inside of the box body 2 is rotatably connected with three clamping plates 6 which are uniformly distributed, the clamping plates 6 are positioned inside the outer rotating disk 3 and the inner rotating disk 4, one ends of the clamping plates 6 far away from the connecting rotating shaft extend to the inside of the inner rotating disk 4, the end surfaces are arc-, the front wall and the rear wall of the outer rotary disk 3 are respectively provided with a rotary shaft hole 7 corresponding to the connecting rotary shaft of the clamping plate 6, the inner rotary disk 4 is fixedly connected with a lower baffle plate 8 positioned on the left side of each clamping plate 6, the inner rotary disk 3 is fixedly connected with an upper baffle plate 9 positioned on the right side of each clamping plate 6, the lower baffle plate 8 and the upper baffle plate 9 are arc plates, the outer rotary disk 3, the inner rotary disk 4, the lower baffle plate 8 and the upper baffle plate 9 are positioned on the same axial line, the clamping plates 6, the lower baffle plate 8 on the left side of the clamping plates 6 and the upper baffle plate 9 on the right side of the clamping plates 6 form a support assembly, the position relations of all the components in the three support assemblies are the same, the motion synchronism of the three support assemblies is ensured, the concentricity of the three clamping plates 6 and a workpiece is further ensured, the positioning assembly 10 is fixedly connected on the outer side of the box body 2, and is positioned, the positioning assembly 10 comprises a positioning seat 101 fixedly installed on the box body 2, a screw rod 102 extending into the box body 2 is inserted into the top of the positioning seat 101 in a threaded manner, a handle is arranged at the top end of the screw rod 102, the bottom ends of the outer sides of the two screw rods 102 are respectively positioned on the left side of the lower baffle plate 8 at the top and the right side of the upper baffle plate 9 at the top, push blocks 103 are rotatably connected with the outer sides of the screw rods 102 and the outer sides of the push blocks 103, retaining rings are arranged on the outer sides of the screw rods 102 and the inner sides of the push blocks 103, so that the positions of the push blocks 103 are fixed, one surfaces of the two push blocks 103, which are respectively contacted with the lower baffle plate 8 and the upper baffle plate 9, are in a slope shape, so that the push blocks 103 can better extrude the lower baffle plate 8 and the upper baffle plate 9, sliding grooves are respectively arranged below the front surface and the back surface of the push block 103 at the left side and above the front surface and the back surface of the, the inner front wall and the inner rear wall of the outer rotating disc 3 are provided with sliding strips corresponding to the right push block 103, the push block 103 is positioned and guided, the outer side of the box body 2 is provided with two screw holes 11 corresponding to the screw rods 102, the enclosing plate of the outer ring of the outer rotating disc 3 is provided with two moving holes 12 corresponding to the screw rods 102, and the enclosing plate of the inner ring and the outer ring of the inner rotating disc 4 is provided with three plate holes 13 corresponding to the clamping plates 6.

The specific use mode and function of the embodiment are as follows:

in the invention, a workpiece is fixed by three clamping plates 6, a left screw 102 is rotated to drive a push block 103 to move downwards, the push block 103 presses the lower baffle 8 at the top rightwards in the downward moving process, and further drives an inner rotary disc 4 to rotate clockwise, meanwhile, the three lower baffles 8 push the three clamping plates 6 to rotate, so that the bottom ends of the clamping plates 6 are close to the inner rotary disc 4, the clamping range of the three clamping plates 6 is gradually expanded, then the right screw 102 is rotated to drive the push block 103 to move downwards and press the upper baffle 9 at the top, and further drive an outer rotary disc 3 to rotate anticlockwise, so that the three upper baffles 9 simultaneously rotate anticlockwise and are in contact with the clamping plates 6, the clamping plates 6 are clamped by the lower baffles 8 and the upper baffles 9, and further the position of the clamping plates 6 is fixed, and further the workpiece is fixed, and as the two push blocks 103 are respectively connected with the inner rotary disc 4 and the outer rotary disc 3 through, therefore, the screw 102 can be rotated reversely to reduce the clamping range, the three clamping plates 6 move synchronously in the adjusting process, the center frame and the workpiece are always concentric, the adjusting precision is ensured, compared with the traditional center frame which needs to adjust three supporting rods back and forth, the precision adjusting does not depend on the hand feeling of workers any more, the adjusting precision is high, and the operation is simple.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high accuracy centre frame for grinding machine which characterized in that: the high-precision center frame for the grinding machine comprises a support (1), a box body (2), an outer rotary disc (3), an inner rotary disc (4), a ball assembly (5), a clamping plate (6), a rotary shaft hole (7), a lower baffle (8), an upper baffle (9), a positioning assembly (10), a positioning seat (101), a screw rod (102), a pushing block (103), a screw hole (11), a moving hole (12) and a plate hole (13), wherein the top of the support (1) is fixedly connected with the box body (2), the inner part of the box body (2) is rotatably connected with the outer rotary disc (3), the inner part of the box body (2) and the inner part of the outer rotary disc (3) are rotatably connected with the inner rotary disc (4), the outer rotary disc (3) and the inner rotary disc (4) are rotatably connected with the box body (2) through the ball assembly (5), and the inner part of the box body (2) is rotatably connected with three, the clamping plates (6) are positioned inside the outer rotating disc (3) and the inner rotating disc (4), rotating shaft holes (7) corresponding to connecting rotating shafts of the clamping plates (6) are formed in the front wall and the rear wall of the outer rotating disc (3), lower baffles (8) are fixedly connected to the inner part of the inner rotating disc (4) and the left side of each clamping plate (6), upper baffles (9) are fixedly connected to the inner part of the outer rotating disc (3) and the right side of each clamping plate (6), positioning assemblies (10) are fixedly connected to the outer side of the box body (2) and the left side of the uppermost lower baffle (8) and the right side of the uppermost upper baffle (9), each positioning assembly (10) comprises a positioning seat (101) fixedly installed on the box body (2), and a screw rod (102) extending to the inner part of the box body (2) is inserted into the top threads of each positioning seat (101), the bottom in two screw rod (102) outsides just is located the left side of the lower baffle of the top (8) and the right side of the upper baffle of the top (9) respectively and all rotates and is connected with ejector pad (103), two screw holes (11) that correspond with screw rod (102) are seted up in the outside of box (2), set up two removal hole (12) that correspond with screw rod (102) on the bounding wall of outer carousel (3) outer lane, set up three pore (13) that correspond with grip block (6) on the bounding wall of inner and outer circles in inner carousel (4).

2. A high-precision center rest for a grinding machine according to claim 1, wherein: ball assemblies (5) are mounted on the front and the back of the outer rotating disc (3) and the inner rotating disc (4), and two sets of ball grooves corresponding to the ball assemblies (5) are formed in the inner front wall and the inner rear wall of the box body (2).

3. A high-precision center rest for a grinding machine according to claim 1, wherein: one end, far away from the connecting rotating shaft, of the clamping plate (6) extends to the inside of the inner rotary disc (4), and the end face of the clamping plate is arc-shaped.

4. A high-precision center rest for a grinding machine according to claim 1, wherein: baffle (8) and last baffle (9) are the circular arc board down, a supporting component is constituteed with baffle (8) down on its left and overhead gage (9) on its right side in grip block (6), and the positional relationship of each part of the inside of three supporting components of group is all the same.

5. A high-precision center rest for a grinding machine according to claim 1, wherein: the top end of the screw rod (102) is provided with a handle, the outer side of the screw rod (102) and the outer side of the push block (103) are provided with threads, and the outer side of the screw rod (102) and the inner side of the push block (103) are provided with a retaining ring.

6. A high-precision center rest for a grinding machine according to claim 1, wherein: two push blocks (103) all are the slope form with the one side of baffle (8) and last baffle (9) contact down respectively, and the left side push block (103) are openly and the below at the back and the right side push block (103) are openly and the top at the back all seted up the spout, all be provided with the draw runner that corresponds with left side push block (103) on the interior antetheca of inner rotary disk (4) and the interior back wall, all be provided with the draw runner that corresponds with right side push block (103) on the interior antetheca of outer rotary disk (3) and the interior back wall.

7. A high-precision center rest for a grinding machine according to claim 1, wherein: the outer turnplate (3), the inner turnplate (4), the lower baffle (8) and the upper baffle (9) are all positioned on the same axis.