CN219562179U

CN219562179U - Cutter clamping device

Info

Publication number: CN219562179U
Application number: CN202320736934.6U
Authority: CN
Inventors: 刘平; 刘洋; 李宁
Original assignee: Miaoke New Material Technology Dongguan Co ltd
Current assignee: Miaoke New Material Technology Dongguan Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-08-22
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses a cutter clamping device, and relates to the technical field of cutter clamps; the tool rest comprises a tool rest body, wherein a hydraulic cavity is formed in the tool rest body, a hydraulic oil pipe communicated with the hydraulic cavity is arranged at the top of the tool rest body, and a tool handle groove is formed in the bottom end of the tool rest body; the clamping mechanisms are arranged in the tool apron and distributed in an annular array; according to the utility model, through the lap joint of the first conical plate and the second conical plate, when the circular plate slides in the oil guide groove, the insert column is driven to slide along the slot, hydraulic oil is injected as driving force for driving the circular plate to slide, the injection depth of the hydraulic oil in the plurality of oil guide grooves can be automatically adjusted no matter whether the cutter bar of the cutter is round or square, so that the sliding distance of the plurality of insert columns can be automatically adjusted, the plurality of insert columns can be ensured to effectively clamp and fix the cutter bar, the whole universality of the device is high, and the clamping device is not required to be replaced due to replacement of the cutter in the processing process, thereby improving the processing efficiency.

Description

Cutter clamping device

Technical Field

The utility model relates to the technical field of cutter clamps, in particular to a cutter clamping device.

Background

The boring cutter is a cutter for hole machining, the most common occasions of the boring cutter are inner hole machining, reaming, profiling and the like, and the boring cutter is generally provided with one or two cutting parts and is specially used for rough machining, semi-finishing machining or finishing machining of the existing holes, and the boring cutter needs to be fixed through a clamping device so as to machine the holes.

The existing clamping device mostly adopts a collet chuck, which is a clamping accessory arranged on a main shaft of a machine tool and used for connecting and locking a cutter, and the cutter is clamped by utilizing the displacement of a taper reducing sleeve, so that the clamping device is very suitable for clamping a cylindrical cutter bar. However, the boring cutter used for part of large workpieces is a square cutter bar, the collet chuck is not suitable for the square cutter bar, and the square cutter bar needs an independent clamping device, so that the universality is poor, when the boring cutter of the round cutter bar and the boring cutter of the square cutter bar are required to be replaced in the process of processing the workpieces, different clamping devices also need to be replaced, and the time for replacing the clamping devices in the process of processing is required to be delayed, so that the processing efficiency is affected.

Disclosure of Invention

The utility model aims at: to solve the above-mentioned problems, the present utility model provides a tool clamping device.

The utility model adopts the following technical scheme for realizing the purposes:

a tool clamping device comprising:

the tool apron is internally provided with a hydraulic cavity, the top of the tool apron is provided with a hydraulic oil pipe communicated with the hydraulic cavity, and the bottom end of the tool apron is provided with a tool shank groove;

the clamping mechanisms are arranged in the tool apron and distributed in an annular array, and are used for clamping tools by means of hydraulic pressure, the clamping mechanisms comprise oil guide grooves formed in the bottom of the hydraulic cavity, inserting grooves are formed in the inner walls of the tool shank grooves, inserting columns are slidably inserted in the inserting grooves, the inserting columns are far away from one ends of the tool shank grooves, the first conical plates are connected with first conical plates, the first conical plates movably extend to the oil guide grooves, circular plates are arranged in the oil guide grooves in a sliding mode, and second conical plates are arranged at the bottoms of the circular plates and overlap joint conical surfaces of the second conical plates with conical surfaces of the first conical plates.

Further, the inner wall of the oil guide groove and the lower part of the circular plate are provided with annular plates, the bottom end of the circular plate is fixedly provided with a plug rod, the plug rod movably penetrates through the annular plates, the second conical plate is fixedly arranged at the free end of the plug rod, and a reset spring sleeved on the plug rod is arranged between the annular plates and the circular plate.

Further, a limiting groove is formed in the inner wall of the annular plate, a limiting block is constructed on the inserting rod, and the limiting block is inserted into the limiting groove in a sliding mode.

Further, a sealing ring is arranged between the circular plate and the oil guide groove.

Further, the slot is obliquely arranged and is communicated with the knife handle groove at one end with high inclination.

Further, the end of the plunger, which is far away from the first conical plate, is of an inclined structure, and the inclined surface is parallel to the axis of the cutter handle groove.

Further, the inclined surface of the plunger is provided with a rubber pad.

Further, the open end of the shank slot is configured with a tapered diffuser.

The beneficial effects of the utility model are as follows: according to the utility model, through the lap joint of the first conical plate and the second conical plate, when the circular plate slides in the oil guide groove, the inserted column is driven to slide along the slot, hydraulic oil is injected to drive the circular plate to slide, the injection depth of the hydraulic oil in the plurality of oil guide grooves can be automatically adjusted no matter whether the cutter bar of the cutter is round or square, so that the sliding distance of the plurality of inserted columns can be automatically adjusted, the plurality of inserted columns can be ensured to effectively clamp and fix the peripheral side of the cutter bar of the cutter, the device has strong overall universality, the device is suitable for cutter bars of different types, and the clamping device is not required to be replaced due to replacement of the cutter in the processing process, thereby improving the processing efficiency.

Drawings

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a perspective cross-sectional view of the present utility model;

FIG. 3 is a cross-sectional view of yet another alternate embodiment of the present utility model;

FIG. 4 is an enlarged view of the utility model at A in FIG. 2;

FIG. 5 is an enlarged view of the utility model at B in FIG. 2;

FIG. 6 is an enlarged view of FIG. 3 at C in accordance with the present utility model;

reference numerals: 1. a tool apron; 2. a hydraulic chamber; 3. a hydraulic oil pipe; 4. a knife handle groove; 5. a clamping mechanism; 6. a ring plate; 7. a rod; 8. a return spring; 9. a limit groove; 10. a limiting block; 11. a seal ring; 12. a tapered diffusion portion; 13. a rubber pad; 501. an oil guiding groove; 502. a slot; 503. inserting a column; 504. a first tapered plate; 505. a circular plate; 506. and a second conical plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 to 6, a tool clamping device according to an embodiment of the present utility model includes:

the tool apron 1, the hydraulic cavity 2 is arranged in the tool apron 1, the top of the tool apron 1 is provided with a hydraulic oil pipe 3 communicated with the hydraulic cavity 2, preferably, in actual use, the hydraulic oil pipe 3 is connected with external oil pressure equipment, and the bottom end of the tool apron 1 is provided with a tool shank groove 4;

the clamping mechanisms 5 are arranged in the tool apron 1 and distributed in an annular array, and are used for clamping a tool by means of hydraulic pressure, the clamping mechanisms 5 comprise an oil guide groove 501 formed in the bottom of the hydraulic cavity 2, a slot 502 is formed in the inner wall of the tool shank groove 4, a plunger 503 is slidably inserted in the slot 502, one end of the plunger 503, far away from the tool shank groove 4, is connected with a first conical plate 504, the first conical plate 504 movably extends into the oil guide groove 501, a circular plate 505 is slidably arranged in the oil guide groove 501, a second conical plate 506 is arranged at the bottom end of the circular plate 505, and the conical surface of the second conical plate 506 is in lap joint with the conical surface of the first conical plate 504;

when carrying out the centre gripping to the cutter, insert the cutter arbor of cutter in handle of a knife groove 4, supply hydraulic oil to hydraulic chamber 2 from hydraulic oil pipe 3 through external oil pressure equipment, in the oil supply process that lasts, can be full of hydraulic oil gradually in hydraulic chamber 2, after hydraulic chamber 2 is full of, hydraulic oil can promote extrusion plectane 505, thereby make plectane 505 slide along leading in the oil groove 501, hydraulic oil also pours into leading in the oil groove 501 thereupon, when plectane 505 slides along leading in the oil groove 501, second conical plate 506 can contradict first conical plate 504, under the conflict of conical surface, thereby drive the spliced pole 503 and slide along slot 502, make the cutter arbor of spliced pole 503 conflict cutter, owing to adopt the flexible extrusion mode of hydraulic oil, thereby make the cutter arbor of cutter be circular or square, the hydraulic oil injection degree of depth in a plurality of leading the oil groove 501 can adjust by oneself, so as to ensure that a plurality of spliced pole 503 can carry out effectual conflict to the cutter arbor week side, through a plurality of spliced pole 503 jointly to the conflict of cutter, with the cooperation to fixed, so as to both to fix the cutter arbor, thereby both sides tight to the fixed device, can be improved the clamp the cutter arbor, can change the hydraulic oil pipe in the whole, the centre gripping device is difficult to be changed, thereby the centre gripping time is required to be improved, and the hydraulic pressure is changed in the centre gripping device is easy to the whole, and the centre gripping is required to be removed to the centre gripping time is because of the hydraulic pressure is 2.

As shown in fig. 4, 5 and 6, in some embodiments, the inner wall of the oil guiding groove 501 and the lower part of the circular plate 505 are provided with a ring plate 6, the bottom end of the circular plate 505 is fixedly provided with a plunger 7, the plunger 7 movably penetrates through the ring plate 6, a second conical plate 506 is fixedly arranged at the free end of the plunger 7, a reset spring 8 sleeved on the plunger 7 is installed between the ring plate 6 and the circular plate 505, when hydraulic oil pushes the circular plate 505 to slide along the oil guiding groove 501, the circular plate 505 cooperates with the ring plate 6 to squeeze the reset spring 8, when the clamping and fixing of the cutter are released, the hydraulic oil pipe 3 is subjected to the action of pressure reduction when the hydraulic oil in the hydraulic cavity 2 is pumped away, and the elastic force of the reset spring 8 is in conflict, so that the circular plate 505 slides and resets, thereby the conflict force of the second conical plate 506 on the first conical plate 504 is reduced, and the conflict force of a plurality of plunger 503 on the cutter bar is reduced, so that the cutter bar is better removed.

As shown in fig. 6, in some embodiments, the inner wall of the ring plate 6 is provided with a limit groove 9, the insert rod 7 is provided with a limit block 10, the limit block 10 is slidably inserted into the limit groove 9, and the limit block 10 and the limit groove 9 are slidably inserted to be matched, so that the insert rod 7 can only slide in the axial direction and cannot rotate circumferentially, so as to ensure the lap joint of the first conical plate 504 and the second conical plate 506.

As shown in fig. 5, in some embodiments, a sealing ring 11 is disposed between the circular plate 505 and the oil guiding groove 501, and by the arrangement of the sealing ring 11, the sealing performance between the circular plate 505 and the oil guiding groove 501 is improved, so that hydraulic oil is prevented from penetrating below the circular plate 505, and the stability of the circular plate 505 sliding along the oil guiding groove 501 is ensured by the hydraulic oil.

As shown in fig. 2 and fig. 4, in some embodiments, the slot 502 is obliquely opened and is at one end with a high inclination with the communication port of the tool shank slot 4, and by obliquely configuring the slot 502, the insert column 503 is also obliquely arranged, after the fixation of the tool is released, the circular plate 505 slides and resets, the insert column 503 slides and resets towards the one end with a low inclination, so that the insert column 503 is slidingly stored in the slot 502, thereby not only being convenient for taking and unloading the tool, but also being convenient for the next better insertion of the tool into the tool shank slot 4.

As shown in fig. 4, in some embodiments, an end of the insert pillar 503 away from the first conical plate 504 is in an inclined configuration, and the inclined surface is parallel to the axis of the shank slot 4, and after the insert pillar 503 is obliquely disposed, the end of the insert pillar 503 away from the first conical plate 504 is in an inclined configuration, so that the contact area between the insert pillar and the tool bar is increased, thereby improving the stability of clamping interference to the tool bar.

As shown in fig. 4, in some embodiments, the inclined surface of the insert pillar 503 is provided with a rubber pad 13, and by the arrangement of the rubber pad 13, the contact friction force between the insert pillar 503 and the cutter bar is increased, so that the clamping interference effect on the cutter bar is better, and meanwhile, the insert pillar 503 is prevented from being in direct contact with the cutter bar, which results in metal fatigue.

As shown in fig. 2, in some embodiments, the open end of the shank slot 4 is configured with a tapered diffusion portion 12, and the tapered diffusion portion 12 is configured to enlarge the notch of the shank slot 4, so that the insertion of the shank of the tool is more convenient and quick.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool clamping device, comprising:

the tool apron (1), a hydraulic cavity (2) is formed in the tool apron (1), a hydraulic oil pipe (3) communicated with the hydraulic cavity (2) is arranged at the top of the tool apron (1), and a tool shank groove (4) is formed in the bottom end of the tool apron (1);

the utility model provides a knife handle, including knife holder (1) and knife tool, a plurality of clamping mechanism (5) are in all set up in knife holder (1) and be annular array and distribute, it is used for pressing from both sides tight to the cutter with the help of hydraulic pressure, clamping mechanism (5) are including seting up lead oil groove (501) of hydraulic pressure chamber (2) bottom, slot (502) have been seted up to the inner wall in handle of a knife groove (4), it inserts in slot (502) and is equipped with spliced pole (503) to slide, spliced pole (503) are kept away from one end in handle of a knife groove (4) is connected with first conical plate (504), first conical plate (504) activity extends to lead in oil groove (501), lead to slide in oil groove (501) and be provided with plectane (505), the bottom of plectane (505) is provided with second conical plate (506), the conical surface of second conical plate (506) with the conical surface overlap joint of first conical plate (504).

2. The tool clamping device according to claim 1, wherein a ring plate (6) is arranged on the inner wall of the oil guide groove (501) and below the circular plate (505), an inserting rod (7) is fixedly arranged at the bottom end of the circular plate (505), the inserting rod (7) movably penetrates through the ring plate (6), a second conical plate (506) is fixedly arranged at the free end of the inserting rod (7), and a reset spring (8) sleeved on the inserting rod (7) is arranged between the ring plate (6) and the circular plate (505).

3. The tool clamping device according to claim 2, wherein the inner wall of the annular plate (6) is provided with a limiting groove (9), the insert rod (7) is provided with a limiting block (10), and the limiting block (10) is slidably inserted into the limiting groove (9).

4. A tool clamping device according to claim 1, characterized in that a sealing ring (11) is arranged between the circular plate (505) and the oil guiding groove (501).

5. The tool clamping device according to claim 1, characterized in that the slot (502) is formed obliquely and the communication opening with the shank slot (4) is at the end with the high inclination.

6. A tool clamping device according to claim 5, characterized in that the end of the spigot (503) remote from the first conical plate (504) is of inclined configuration, and the inclined surface is parallel to the axis of the shank slot (4).

7. A tool clamping device according to claim 6, characterized in that the inclined surface of the spigot (503) is provided with a rubber pad (13).

8. A tool clamping device according to claim 1, characterized in that the open end of the shank slot (4) is configured with a conical diffusion (12).