CN219275280U

CN219275280U - Safety emergency stop device of numerical control machine tool

Info

Publication number: CN219275280U
Application number: CN202320315408.2U
Authority: CN
Inventors: 吴芝平
Original assignee: Huangshi Xinlong Machinery Manufacturing Co ltd
Current assignee: Huangshi Xinlong Machinery Manufacturing Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-06-30
Anticipated expiration: 2033-02-27

Abstract

The utility model relates to the technical field of numerical control machine tools and discloses a safety emergency stop device of a numerical control machine tool, which comprises a mounting block, a base and a mounting frame, wherein the mounting frame is fixedly arranged at the top of the base, the mounting block is fixedly arranged at the bottom of the mounting frame and is positioned above the base, a movable groove is formed in the bottom of the mounting block, a driving motor with an output shaft extending into the movable groove is fixedly arranged at the top of the mounting frame, a transmission shaft is fixedly connected to the bottom of the output end of the driving motor through a coupling, a cutter chuck positioned at the outer side of the transmission shaft is slidably arranged at the inner side of the movable groove, a first sliding groove is formed in the top of the cutter chuck, and the bottom end of the transmission shaft is slidably arranged at the inner side of the first sliding groove. This digit control machine tool safety scram device has possessed and has braked the cutter when digit control machine tool scram, avoids the cutter because inertial rotation leads to the emergence of dangerous condition, and scram effectual, advantage that life is high.

Description

Safety emergency stop device of numerical control machine tool

Technical Field

The utility model relates to the technical field of numerical control machine tools, in particular to a safety emergency stop device of a numerical control machine tool.

Background

The numerical control machine is an automatic machine tool provided with a program control system, various control signals are sent out by a numerical control device through calculation processing of programming codes, actions of cutters or workpieces are controlled, parts are automatically machined, and in order to protect personal safety and equipment, the numerical control machine tool is usually provided with a safety emergency stop device, and when the machine is in a dangerous state, a power supply is cut off through an emergency stop switch, and equipment operation is stopped.

In the publication No. CN214108914U, a vertical emergency stop device for a machining center is provided, and the gear can be rapidly and emergently stopped under dangerous or emergency conditions through a friction plate and a clamping block, so that the rotation of a cutter can be rapidly stopped, potential safety hazards are reduced, and economic losses are reduced.

The device carries out quick emergency stop on the cutter rotating shaft through the cooperation of the saw teeth of the clamping blocks and the gears, but the inertia of the rotating shaft is larger when the rotating shaft is stopped, the rotating shaft can suffer from axial impact of the gears when the rotating shaft is in emergency stop in a clamping block inserting mode, the clamping blocks can be damaged after long-time use, the cooperation with the gears is lost, and the service life is shorter, so that the numerical control machine tool safety emergency stop device is provided for solving the problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a safe emergency stop device of a numerical control machine tool, which has the advantages of preventing dangerous situations caused by inertial rotation of the cutter, along with good emergency stop effect, long service life and the like, and solves the problem that the traditional emergency stop device is easy to damage.

(II) technical scheme

The technical scheme for solving the technical problems is as follows: the utility model provides a digit control machine tool safety scram device, includes the installation piece, still includes base and mounting bracket, mounting bracket fixed mounting is in the top of base, installation piece fixed mounting is in the bottom of mounting bracket and is located the top of base, movable groove has been seted up to the bottom of installation piece, the top fixed mounting of mounting bracket has the driving motor that the output shaft extends to the movable inslot, the bottom of driving motor output passes through shaft coupling fixedly connected with transmission shaft, the inboard slidable mounting of movable groove has the cutter chuck that is located the transmission shaft outside, first spout has been seted up at the top of cutter chuck, the bottom slidable mounting of transmission shaft is in the inboard of first spout, the inside wall fixed mounting of movable groove has annular electromagnet, annular electromagnet is connected with scram switch electricity, the inboard rotation of movable groove is installed the quantity and is two and is located the clutch blocks of annular electromagnet bottom, two the clutch blocks are the left and right sides of symmetric distribution in cutter chuck, the outside of clutch block axis of rotation is provided with the torsional spring.

The beneficial effects of the utility model are as follows:

this digit control machine tool safety scram device, when pressing digit control machine tool scram button, annular electromagnet outage loses magnetism, and the clutch blocks of both sides clamp the cutter chuck under the effect of torsional spring, brake it, have braked the cutter when digit control machine tool scram, avoid the cutter because inertial rotation leads to the emergence of dangerous condition, and scram is effectual, advantage that life is high.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the outside fixed mounting of cutter chuck has the spacing ring, the outside rotation of spacing ring installs the absorption ring that the cross-section is U and is located annular electro-magnet top, the second spout with the movable slot intercommunication has all been seted up to the left and right sides of installation piece, the left and right sides of absorption ring is fixed mounting respectively has the driving lever that extends to the left and right sides of installation piece through the second spout, fixed mounting has the extension spring between the top of driving lever and the inboard roof of second spout.

The adoption of the further scheme has the beneficial effects that when the annular electromagnet is powered off, magnetism disappears, the adsorption ring loses adsorption force and drives the cutter chuck to move upwards to shrink into the movable groove under the action of the tension spring, the cutter is shrunk in time, and damage to the cutter or a workpiece under dangerous conditions is avoided.

Further, plane bearings are arranged between the upper surface and the lower surface of the limiting ring and the inner side wall of the adsorption ring, and the inner side size of the adsorption ring is larger than the outer side size of the cutter chuck.

The adoption of the further scheme has the beneficial effect that the friction force between the adsorption ring and the limiting ring is reduced through the plane bearing.

Furthermore, the upper surface and the lower surface of the annular electromagnet are electrified to be magnetic, and the opposite sides of the friction block and the adsorption ring are iron.

The technical scheme has the beneficial effects that when the annular electromagnet is electrified, the upper surface and the lower surface of the annular electromagnet can adsorb metal conveniently.

Further, the length of the second sliding groove is not greater than the length of the transmission shaft, and the length of the cutter chuck is smaller than the length of the transmission shaft.

The cutter chuck is pulled to move upwards and shrink into the movable groove by the aid of the further scheme, and the cutter chuck is pulled to move upwards and shrink into the movable groove by the aid of enough travel of the absorption ring.

Further, the depth of the first sliding groove is not smaller than the length of the cutter chuck at one end of the bottom of the mounting block, the bottom end of the transmission shaft is square, and the shape of the inner side of the first sliding groove is matched with the shape of the bottom end of the transmission shaft.

The beneficial effect of adopting above-mentioned further scheme is, is convenient for transmit the moment of torsion through square transmission shaft and the cooperation of first spout.

Further, the inner side roof of movable groove fixed mounting has a plurality of be annular equidistance and distribute the spring, and a plurality of the bottom fixed mounting of spring has the baffle of same.

The cutter clamping head is driven to move upwards to reset under the action of the tension spring after the limit of the adsorption ring is lost through the action of the baffle plate and the spring, and the cutter clamping head is buffered and protected.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

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

FIG. 3 is an enlarged view of the utility model at B;

fig. 4 is a schematic perspective view of the structure of the present utility model.

In the figure: 1. a mounting block; 2. a base; 3. a mounting frame; 4. a movable groove; 5. a driving motor; 6. a transmission shaft; 7. a tool holder; 8. a first chute; 9. an annular electromagnet; 10. a friction block; 11. a torsion spring; 12. a limiting ring; 13. an adsorption ring; 14. a second chute; 15. a deflector rod; 16. a tension spring; 17. a spring; 18. and a baffle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the embodiment, given by fig. 1-4, a numerical control machine tool safety emergency stop device, the utility model includes installation block 1, still include base 2 and mounting bracket 3, mounting bracket 3 fixed mounting is in the top of base 2, installation block 1 fixed mounting is in the bottom of mounting bracket 3 and is located the top of base 2, movable groove 4 has been seted up to the bottom of installation block 1, the top fixed mounting of mounting bracket 3 has the driving motor 5 that the output shaft extends to in the movable groove 4, the bottom of driving motor 5 output is fixed connection through the shaft coupling has transmission shaft 6, the inboard slidable mounting of movable groove 4 has the cutter chuck 7 that is located the transmission shaft 6 outside, first spout 8 has been seted up at the top of cutter chuck 7, the bottom slidable mounting of transmission shaft 6 is in the inboard of first spout 8, the inside wall fixed mounting of movable groove 4 has annular electromagnet 9, annular electromagnet 9 is connected with emergency stop switch electricity, the inboard rotation of movable groove 4 is installed a quantity and is two just be located annular electromagnet 9 bottom friction blocks 10, two friction blocks 10 are the left and right sides of symmetrical in cutter chuck 7, the outside of friction block 10 axis is provided with torsional spring 11.

The outside fixed mounting of cutter chuck 7 has spacing ring 12, and the outside rotation of spacing ring 12 installs the absorption ring 13 that the cross-section is U and lie in annular electromagnet 9 top, and the second spout 14 with movable slot 4 intercommunication has all been seted up to the left and right sides of installation piece 1, and the left and right sides of absorption ring 13 is fixed mounting respectively has the driving lever 15 that extends to the left and right sides of installation piece 1 through second spout 14, and fixed mounting has extension spring 16 between the top of driving lever 15 and the inboard roof of second spout 14.

When the annular electromagnet 9 is powered off, magnetism disappears, the adsorption ring 13 loses adsorption force and moves upwards to be contracted into the movable groove 4 with the tool chuck 7 under the action of the tension spring 16, the tool is contracted in time, and damage to the tool or a workpiece under dangerous conditions is avoided.

Wherein, the upper and lower surfaces of the limiting ring 12 and the inner side wall of the adsorption ring 13 are respectively provided with a plane bearing, and the inner side dimension of the adsorption ring 13 is larger than the outer side dimension of the cutter chuck 7.

Friction between the absorption ring 13 and the stop ring 12 is reduced by a planar bearing.

The upper and lower surfaces of the annular electromagnet 9 are electrified to be magnetic, and the opposite sides of the friction block 10 and the adsorption ring 13 are iron.

When the annular electromagnet 9 is electrified, the upper surface and the lower surface of the annular electromagnet can absorb metal conveniently.

Wherein the length of the second chute 14 is not greater than the length of the drive shaft 6, and the length of the tool holder 7 is smaller than the length of the drive shaft 6.

The suction ring 13 is convenient to have enough travel to pull the tool chuck 7 to move upwards to retract into the movable groove 4.

The depth of the first sliding groove 8 is not smaller than the length of the cutter chuck 7 at one end of the bottom of the mounting block 1, the bottom end of the transmission shaft 6 is square, and the shape of the inner side of the first sliding groove 8 is matched with the shape of the bottom end of the transmission shaft 6.

Torque is conveniently transmitted through the cooperation of the square transmission shaft 6 and the first chute 8.

Wherein, the inside roof of movable groove 4 fixed mounting has a plurality of spring 17 that are annular equidistance and distribute, and the bottom fixed mounting of a plurality of spring 17 has the same baffle 18.

Through the effect of baffle 18 and spring 17, when absorption ring 13 loses spacing back under extension spring 16 effect drive cutter chuck 7 upward removal reset, carry out the buffering protection to cutter chuck 7.

Working principle:

first,: when a sudden stop button of the numerical control machine tool is pressed, the driving motor 5 is powered off, the annular electromagnet 9 is powered off and loses magnetism, friction blocks 10 on two sides of the cutter chuck 7 lose the adsorption force of the annular electromagnet 9, the friction blocks 10 clamp the cutter chuck 7 under the action of the torsion springs 11, and the cutter chuck 7 is braked;

secondly: when the annular electromagnet 9 is powered off, the magnetism at the top of the annular electromagnet 9 disappears, after the adsorption ring 13 loses the adsorption force, the adsorption ring 13 and the deflector rod 15 move upwards to be contracted into the movable groove 4 with the tool chuck 7 under the action of the tension spring 16, so that the tool is contracted in time, and the damage to the tool or a workpiece under dangerous conditions is avoided;

finally: after the dangerous situation is relieved, the annular electromagnet 9 is electrified to generate magnetism, the deflector rods 15 on the two sides are pulled downwards, the adsorption ring 13 is driven to move downwards to reset for adsorption fixation, and meanwhile the friction blocks 10 on the two sides are rotated to the bottom of the annular electromagnet 9 for adsorption fixation.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a digit control machine tool safety scram device, includes installation piece (1), its characterized in that: still include base (2) and mounting bracket (3), mounting bracket (3) fixed mounting is in the top of base (2), installation piece (1) fixed mounting is in the bottom of mounting bracket (3) and be located the top of base (2), movable groove (4) have been seted up to the bottom of installation piece (1), the top fixed mounting of mounting bracket (3) has driving motor (5) that the output shaft extends to in movable groove (4), shaft coupling fixedly connected with transmission shaft (6) are passed through to the bottom of driving motor (5) output, the inboard slidable mounting of movable groove (4) has cutter chuck (7) that are located the transmission shaft (6) outside, first spout (8) have been seted up at the top of cutter chuck (7), the bottom slidable mounting of transmission shaft (6) is in the inboard of first spout (8), the inside wall fixed mounting of movable groove (4) has annular electromagnet (9), annular electromagnet (9) are connected with the emergency switch electricity, the inboard rotation of movable groove (4) installs quantity and is two and be located annular electromagnet (9) bottom two and is in the rotation of friction disc (10) is in the rotation axis (10) of rotation (10) are located two sides of torsional spring (10) are provided with in the rotation of the left and right sides of friction disc (10).

2. The safety emergency stop device for a numerical control machine tool according to claim 1, wherein: the outside fixed mounting of cutter chuck (7) has spacing ring (12), the outside rotation of spacing ring (12) is installed and is the absorption ring (13) of U type and be located annular electro-magnet (9) top, second spout (14) with movable slot (4) intercommunication have all been seted up to the left and right sides of installation piece (1), the left and right sides of absorption ring (13) is fixed mounting respectively has driving lever (15) that extend to the left and right sides of installation piece (1) through second spout (14), fixed mounting extension spring (16) between the top of driving lever (15) and the inboard roof of second spout (14).

3. The safety emergency stop device for a numerical control machine tool according to claim 2, wherein: planar bearings are arranged between the upper surface and the lower surface of the limiting ring (12) and the inner side wall of the adsorption ring (13), and the inner side size of the adsorption ring (13) is larger than the outer side size of the cutter chuck (7).

4. The safety emergency stop device for a numerical control machine tool according to claim 2, wherein: the upper surface and the lower surface of the annular electromagnet (9) are electrified to be magnetic, and the opposite sides of the friction block (10) and the adsorption ring (13) are iron.

5. The safety emergency stop device for a numerical control machine tool according to claim 2, wherein: the length of the second sliding groove (14) is not larger than that of the transmission shaft (6), and the length of the cutter chuck (7) is smaller than that of the transmission shaft (6).

6. The safety emergency stop device for a numerical control machine tool according to claim 1, wherein: the depth of the first sliding groove (8) is not smaller than the length of the cutter chuck (7) at one end of the bottom of the mounting block (1), the bottom end of the transmission shaft (6) is square, and the shape of the inner side of the first sliding groove (8) is matched with the shape of the bottom end of the transmission shaft (6).

7. The safety emergency stop device for a numerical control machine tool according to claim 2, wherein: the inner side top wall of the movable groove (4) is fixedly provided with a plurality of springs (17) which are distributed in an annular equidistant mode, and the bottoms of the springs (17) are fixedly provided with the same baffle plate (18).