CN221047904U - Axial positioning and compressing device for rotary workpiece - Google Patents

Abstract

The utility model provides an axial positioning and compressing device for a rotary workpiece. The clamping device solves the problems that the clamping stability of the existing thin-wall workpiece is insufficient, the thin-wall workpiece is easy to move in the machining process, and the machining quality is affected. According to the utility model, the workpiece is pressed against the rotating disc by the fluid sprayed by the spray head on the fluid pressure disc to finish the fixing of the workpiece, so that the workpiece is more firmly installed, deformation can not occur, and meanwhile, the overturning moment generated during processing can be resisted under the condition that the height of the radial positioning device installed on the rotating disc is very low.

Description

Axial positioning and compressing device for rotary workpiece

Technical Field

The utility model relates to the technical field of machining, in particular to an axial positioning and compressing device for a rotary workpiece.

Background

Machining of annular workpieces, in particular annular workpieces, is often encountered in machining. For this annular workpiece, a three-jaw chuck is usually used for clamping, but the jaws of the three-jaw chuck easily deform the workpiece when clamping the annular workpiece. Therefore, people begin to use the sucking disc to adsorb the terminal surface of annular work piece and process, but the sucking disc is not enough to many annular work pieces's adsorption area, namely its area of contact with the terminal surface of annular work piece is less, lead to the area of force less for annular work piece's centre gripping stability is insufficient, annular work piece is easy to remove in the course of working, influence processingquality, when annular work piece needs the processing of inside and outside circle simultaneously, press from both sides tight or location part height need fall very low, otherwise can interfere with the cutter emery wheel of processing, at this moment work piece processing has great subversion moment, so the existing technology is difficult to implement, the prior art exists the modifiable place.

Disclosure of Invention

The utility model provides a rotary workpiece axial positioning and compressing device which is arranged on a machine tool and is characterized in that the axial positioning and compressing device comprises a rotating disc which is arranged on the machine tool spindle and is perpendicular to the spindle axis, a fluid pressure disc which can be fixedly arranged relative to the machine tool body is arranged on the machine tool body, a workpiece is positioned between the rotating disc and the fluid pressure disc, a certain gap is reserved between the fluid pressure disc and the workpiece, a plurality of spray heads are arranged on the fluid pressure disc, and the fluid is sprayed to the end face of the workpiece and then is pressed against the rotating disc.

Preferably, the fluid pressure disc is provided with a notch for the cutter to enter the fluid pressure disc to cut the inside of the workpiece, and the fluid pressure disc is C-shaped.

Preferably, the nozzles are uniformly distributed on an end surface of the fluid pressure disk facing the main shaft.

Preferably, the fluid pressure disc is mounted on the machine tool by a connecting rod movably provided on the machine tool, and the fluid pressure disc can be adjusted in position along the length direction of the main shaft by the connecting rod.

Preferably, the radial positioning device comprises two positioning blocks fixedly arranged on the rotary disc, the positioning blocks are abutted against the workpiece, the rotary disc is provided with pressing blocks for pressing the workpiece against the positioning blocks, and the positioning blocks and the pressing blocks are respectively positioned on the inner side and the outer side of the workpiece.

Preferably, the rotating disc is a sucking disc, and the radial positioning device comprises a plurality of pressing blocks arranged on the periphery of the workpiece.

Preferably, the pressing block is provided with a pressing surface which is contacted with the workpiece, and one side of the pressing block is provided with a driving mechanism for driving the pressing block to move.

Preferably, the driving mechanism comprises a guide block fixedly arranged on the rotating disc, a guide rod is movably arranged on the guide block, one end of the guide rod is fixedly arranged on the pressing block, a spring for driving the pressing block to move away from the guide block is sleeved on the guide rod, a base is fixedly arranged on the rotating disc, an inclined wedge is movably arranged on one side of the base, facing to the workpiece, of the base, the pressing block is fixedly arranged on the end face, facing to the workpiece, of the inclined wedge, the spring is positioned above the inclined wedge, the spring abuts against the inclined wedge, a certain gap is reserved between the guide rod and the inclined wedge, and a push rod for driving the inclined wedge to move towards the spring is arranged on the machine tool.

Preferably, the driving mechanism is a cylinder or an oil cylinder.

Compared with the prior art, the workpiece is fixed by pressing the workpiece against the rotating disc through the fluid sprayed by the spray head on the fluid pressure disc, the workpiece is more firmly installed, deformation cannot occur, and meanwhile, the overturning moment generated during machining can be resisted under the condition that the height of the radial positioning device installed on the rotating disc is very low.

Drawings

FIG. 1 is an overall structural view of the present utility model;

FIG. 2 is an overall structural view of a fluid pressure disc;

FIG. 3 is an overall structural view on a rotating disk;

Fig. 4 is a schematic structural view of embodiment 3;

fig. 5 is a schematic structural view of embodiment 5.

The marks in the figure: 1. a main shaft; 2. a rotating disc; 4. radial positioning means; 5. a fluid pressure disc; 6. a spray head; 7. a positioning block; 8. briquetting; 9. a driving mechanism; 10. a guide block; 11. a guide rod; 12. a spring; 13. a connecting rod; 14. pressing the leaning surface; 15. a base; 16. wedge block; 17. a push rod.

Detailed Description

The utility model is further described below with reference to embodiments shown in the drawings in which:

Example 1

As shown in fig. 1-3, an axial positioning and pressing device for rotating a workpiece is arranged on a machine tool, a radial positioning device 4 for positioning the workpiece is arranged on a spindle 1, the axial positioning and pressing device comprises a rotating disc 2 arranged on the spindle 1 of the machine tool, the rotating disc 2 axially perpendicular to the spindle 1 and a fluid pressure disc 5 for pressing the workpiece against the rotating disc 2, the workpiece is positioned between the rotating disc 2 and the fluid pressure disc 5, a certain gap is reserved between the fluid pressure disc 5 and the workpiece, a plurality of spray heads 6 for pressing the workpiece against the rotating disc 2 after spraying water are fixedly arranged at one end of the fluid pressure disc 5 towards the rotating disc 2, gaps for cutting the workpiece by a cutter into the fluid pressure disc 5 are formed in the fluid pressure disc 5, the spray heads 6 are uniformly distributed on the end face of the side of the spindle 1, the cutter can enter the fluid pressure disc 5 through the gaps for processing the workpiece when the workpiece is processed, the fluid pressure disc 5 can be installed on the machine tool through a connecting rod 13 movably arranged on the machine tool, and the connecting rod 13 can be adjusted along the length of the connecting rod 13 on the spindle 1, and the connecting rod can be used for processing the workpiece along the length of the connecting rod 13. The workpiece to be processed is limited in the radial direction through the radial positioning device 4, the workpiece is pressed against the rotating disc 2 through water flow sprayed by the spray head 6 on the fluid pressure disc 5 to finish the fixing of the workpiece, the workpiece is more firmly installed, deformation can not occur, and meanwhile, the overturning moment generated during processing can be resisted under the condition that the height of the radial positioning device 4 installed on the rotating disc 2 is very low. When the workpiece is cut, the tool rest can move through the opening on the C-shaped fluid pressure disc 5 and cannot be contacted with the fluid pressure disc 5, and when the workpiece is pressed against the rotating disc 2 through water flow, residues in the machining process can be taken away by the water flow. The plane of the spray head 6 is parallel to the end face of the workpiece, a plurality of spray heads 6 are positioned on the same plane, and the pressure fluid is sprayed out from the spray heads 6 and flows out from a gap between the plane of the spray heads 6 and the end face of the workpiece, and simultaneously presses the workpiece on the plane of the rotating disc 2.

The positioning device comprises two positioning blocks 7 fixedly arranged on the rotating disc 2, the positioning blocks 7 are abutted against the inner wall of the workpiece, the rotating disc 2 is provided with pressing blocks 8 used for pressing the workpiece against the positioning blocks 7, and the positioning blocks 7 and the pressing blocks 8 are respectively positioned on the inner side and the outer side of the workpiece. The pressing block 8 is provided with a pressing surface 14 which is contacted with a workpiece, and one side of the pressing block 8 is provided with a driving mechanism 9 for driving the pressing block 8 to move. The driving mechanism 9 comprises a guide block 10 fixedly arranged on the rotary disk 2, a guide rod 11 is movably arranged on the guide block 10, one end of the guide rod 11 is fixedly arranged on the press block 8, a spring 12 for driving the press block 8 to move away from the guide block 10 is sleeved on the guide rod 11, a base 15 is fixedly arranged on the rotary disk 2, a wedge block 16 is movably arranged on one side of the base 15, which faces the workpiece, the press block 8 is fixedly arranged on the end face, which faces the workpiece, of the wedge block 16, the spring 12 is positioned above the wedge block 16, the spring 12 abuts against the wedge block 16, a certain gap is reserved between the guide rod 11 and the wedge block 16, a push rod 17 for driving the wedge block 16 to move towards the spring 12 is arranged on the machine tool, when the workpiece is fixed, the spring 12 drives the wedge block 16 to move obliquely along the base 15, the press block 8 fixed on the wedge block 16 moves towards the workpiece, the workpiece is pressed against the workpiece to be fixed on the positioning block 7, the wedge block 16 is driven by the push rod 17 to move obliquely, the spring 17 is driven by the push rod 17 to move downwards, and the workpiece is released by the push rod 17. Three-point positioning of the workpiece is realized through the two positioning blocks 7 and the pressing block 8, the workpiece is tightly pressed on the two positioning blocks 7 through the driving mechanism 9, the positioning is more stable, and the workpiece is prevented from shifting in the processing process.

Example 2

The difference from embodiment 1 is that the rotary disk 2 is a suction disk, the workpiece is doubly fixed by the suction disk and the fluid pressure disk 5, and the workpiece is fixed in the radial direction by a plurality of press blocks 8 enclosed on the outer periphery of the workpiece.

Example 3

The difference from embodiment 2 is that the driving mechanism 9 is a cylinder or an oil cylinder.

Example 4

The difference from embodiment 1 is that two pressing pieces 8 are provided, and the pressing pieces 8 are disposed opposite to the positioning block 7.

Example 5

The difference from embodiment 1 is that the positioning block 7 is arranged outside the workpiece, the pressing block 8 is positioned inside the workpiece, and the positioning and fixing of the workpiece are realized by the outer wall of the workpiece abutting against the positioning block 7.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (9)

1. The utility model provides a rotatory work piece axial positioning closing device, sets up on the lathe, be provided with radial positioning device (4) that are used for the location work piece on lathe main shaft (1), a serial communication port, axial positioning closing device is including setting up on lathe main shaft (1) and rotating disk (2) that are perpendicular with main shaft (1) axle center, be equipped with fluid pressure dish (5) that can relative lathe bed fixed mounting on the lathe bed, the work piece is located between above-mentioned rotating disk (2) and this fluid pressure dish (5), leaves certain clearance between this fluid pressure dish (5) and the work piece, be equipped with a plurality of shower nozzles (6) on fluid pressure dish (5), make the work piece press on rotating disk (2) after spouting the work piece terminal surface with fluid.

2. The axial positioning and pressing device for the rotary workpiece according to claim 1, wherein a notch for a cutter to enter the fluid pressure disc (5) to cut the inside of the workpiece is formed in the fluid pressure disc (5), and the fluid pressure disc (5) is of a C shape.

3. An axially positioned pressing device for rotating workpieces according to claim 2, characterized in that the spray heads (6) are uniformly distributed on the end face of the fluid pressure disc (5) facing the side of the main shaft (1).

4. A rotary workpiece axial positioning and pressing device according to claim 1, characterized in that the fluid pressure disc (5) is mounted on the machine tool by means of a connecting rod (13) movably arranged on the machine tool, the fluid pressure disc (5) being adjustable in position along the length of the spindle (1) by means of the connecting rod (13).

5. The axial positioning and pressing device for the rotary workpiece according to claim 1, wherein the radial positioning device (4) comprises two positioning blocks (7) fixedly arranged on the rotary disk (2), the positioning blocks (7) are abutted against the workpiece, pressing blocks (8) for pressing the workpiece against the positioning blocks (7) are arranged on the rotary disk (2), and the positioning blocks (7) and the pressing blocks (8) are respectively positioned on the inner side and the outer side of the workpiece.

6. The axial positioning and compressing device for rotating workpieces according to claim 1, wherein the rotating disc (2) is a sucker, and the radial positioning device (4) comprises a plurality of pressing blocks (8) arranged on the periphery of the workpiece.

7. A rotary workpiece axial positioning and pressing device according to claim 5 or 6, characterized in that the pressing block (8) is provided with a pressing surface (14) which is in contact with the workpiece, and one side of the pressing block (8) is provided with a driving mechanism (9) which drives the pressing block (8) to move.

8. The axial positioning and compacting device for rotating workpieces according to claim 7, characterized in that the driving mechanism (9) comprises a guide block (10) fixedly arranged on the rotating disc (2), a guide rod (11) is movably arranged on the guide block (10), one end of the guide rod (11) is fixedly arranged on the pressing block (8), a spring (12) for driving the pressing block (8) to move away from the guide block (10) is sleeved on the guide rod (11), a base (15) is fixedly arranged on the rotating disc (2), a wedge block (16) is movably arranged on one side of the base (15) facing the workpiece, the pressing block (8) is fixedly arranged on the end face of the wedge block (16) facing the workpiece, the spring (12) is positioned above the wedge block (16), the spring (12) is abutted against the wedge block (16), a certain gap is reserved between the guide rod (11) and the wedge block (16), and a spring (17) for driving the wedge block (16) to move towards the direction of the wedge block (16) is arranged on the machine tool.

9. A rotary workpiece axial positioning and compacting device according to claim 7, characterized in that the driving mechanism (9) is a cylinder or an oil cylinder.