阅读说明：本技术 数控机床的电气防护装置 (Electric protection device of numerical control machine tool ) 是由 李振晖 张天伟 王德涛 聂白皇 周勇 蔡镇蔚 吕时广 于 2019-10-21 设计创作，主要内容包括：本发明公开了数控机床的电气防护装置,机架上设置有调节连杆、锁紧装置、曲轴、滑块和开关组件,曲轴转动设置在机架顶部位置处,滑块转动设置在导曲轴上,锁紧装置设置在滑块底面上,调节连杆螺纹连接在滑块中间的螺纹孔内,开关组件固设在所述滑块上。本发明提供了一种在冲床工作时,冲程调节连杆上的锁紧螺母松动,马上启动离合器和刹车的装置,使冲头停止运动,以达到防止冲压行程过大而导致冲头断裂和磨具损坏,保证冲床产品的质量。(The invention discloses an electric protection device of a numerical control machine tool.A rack is provided with an adjusting connecting rod, a locking device, a crankshaft, a sliding block and a switch assembly, the crankshaft is rotatably arranged at the top of the rack, the sliding block is rotatably arranged on a guide crankshaft, the locking device is arranged on the bottom surface of the sliding block, the adjusting connecting rod is in threaded connection with a threaded hole in the middle of the sliding block, and the switch assembly is fixedly arranged on the sliding block. The invention provides a device for immediately starting a clutch and a brake when a locking nut on a stroke adjusting connecting rod is loosened during the working of a punch press, so that the punch press stops moving, the punch press is prevented from being broken and a grinding tool is prevented from being damaged due to overlarge punching stroke, and the quality of a punch press product is ensured.)

1. Electric protection device of digit control machine tool, including frame (1), its characterized in that: the frame (1) is provided with an adjusting connecting rod (2), a locking device (3), a crankshaft (4), a sliding block (5) and a switch assembly (6);

the crankshaft (4) is rotatably arranged at the top of the rack (1), the sliding block (5) is rotatably arranged on the crankshaft (4), the locking device (3) is arranged on the bottom surface of the sliding block (5), the adjusting connecting rod (2) is in threaded connection with a threaded hole in the middle of the sliding block (5), and the switch assembly (6) is fixedly arranged on the sliding block (5);

the locking device (3) comprises a guide rod bolt (31), a compression spring (32) and an upper sliding plate and a lower sliding plate (33), the compression spring (32) is arranged in a spring hole of the sliding block (5), the upper plane of the upper sliding plate (33) is in top contact with the lower bottom surface of the compression spring (32) and a contact of the switch component (6), the upper sliding plate (33) and the lower sliding plate (33) are provided with guide holes, and the guide rod bolt (31) penetrates through the guide holes and is fixedly arranged at the bottom of the sliding block (5);

the adjusting connecting rod (2) comprises a thread adjusting rod (21), a nut (22), a rotating ring sleeve (23), a ring sleeve pin shaft (24), a ball head rotating rod (25) and a cover plate (26), a first through hole is formed in the middle of the upper sliding plate (33) and the lower sliding plate (33), the thread adjusting rod (21) penetrates through the first through hole and then is in threaded connection with a threaded hole in the middle of the sliding block (5), the nut (22) is in threaded connection with the thread adjusting rod (21), the rotating ring sleeve (23) is rotatably arranged on a shaft at the bottom of the thread adjusting rod (21), a second through hole is formed in the middle of the rotating ring sleeve (23), the ring sleeve pin shaft (24) penetrates through the second through hole and is slidably arranged on a hole in the bottom of the thread adjusting rod (21), a shaft hole is formed in the top of the ball head rotating rod (25), and a combined piece of the thread adjusting rod (21), the rotating ring sleeve (23) and the ring sleeve pin shaft, the cover plate (26) is fixedly arranged at the top of the ball head rotating rod (25).

2. The electric protection device of a numerical control machine according to claim 1, characterized in that: two nuts (22) are arranged on the threaded adjusting rod (21).

3. The electric protection device of a numerical control machine according to claim 1, characterized in that: the bottom of the sliding block (5) is provided with four guide rod bolts (31) and four compression springs (32).

4. The electric protection device of a numerical control machine according to claim 1, characterized in that: the middle part of the threaded adjusting rod (21) is provided with a hexagonal opening.

Technical Field

The invention relates to the technical field of punching equipment, in particular to an electric protection device of a numerical control machine tool.

Background

In modern production, the stamping process has the advantages of material and energy conservation, high efficiency, low technical requirement on operators and capability of making products which cannot be achieved by mechanical processing through various die applications compared with the traditional mechanical processing, so that the stamping process has more and more extensive applications and extremely wide application range in various industries. The design principle of the punch is that circular motion is converted into linear motion, a main motor drives a flywheel, and a clutch drives a gear, a crankshaft (or an eccentric gear), a connecting rod and the like to rotate so as to achieve the linear motion of a sliding block.

However, when the stamping die is used for stamping, the screw rod for adjusting the stamping stroke is often loosened due to vibration generated by stamping, so that the stamping stroke is too large, the quality problem of stamped parts is caused, the punch head is seriously broken, and the grinding tool is damaged.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an electric protection device of a numerical control machine tool.

In order to solve the technical problems, the invention is solved by the following technical scheme: the electric protection device of the numerical control machine tool comprises a rack, wherein an adjusting connecting rod, a locking device, a crankshaft, a sliding block and a switch assembly are arranged on the rack;

the crankshaft is rotatably arranged at the top of the frame, the sliding block is rotatably arranged on the crankshaft, the locking device is arranged on the bottom surface of the sliding block, the adjusting connecting rod is in threaded connection with a threaded hole in the middle of the sliding block, and the switch assembly is fixedly arranged on the sliding block;

the locking device comprises a guide rod bolt, a compression spring and an upper sliding plate and a lower sliding plate, wherein the compression spring is arranged in a spring hole of the sliding block, the upper plane of the upper sliding plate and the lower sliding plate are abutted against the lower bottom surface of the compression spring and the switch assembly, the upper sliding plate and the lower sliding plate are provided with guide holes, and the guide rod bolt penetrates through the guide holes and is fixedly arranged at the bottom of the sliding block;

the adjusting connecting rod comprises a threaded adjusting rod, a nut, a rotating ring sleeve, a ring sleeve pin shaft, a ball head rotating rod, a cover plate and a ball bowl, a first through hole is formed in the middle of the upper sliding plate and the lower sliding plate, the threaded adjusting rod penetrates through the first through hole and then is in threaded connection with a threaded hole in the middle of the sliding block, the nut is in threaded connection with the threaded adjusting rod, the rotating ring sleeve is rotatably arranged on a shaft at the bottom of the threaded adjusting rod, a second through hole is formed in the middle of the rotating ring sleeve, the ring sleeve pin shaft penetrates through the hole and is slidably arranged on a second through hole in the bottom of the threaded adjusting rod, a shaft hole is formed in the top of the ball head rotating rod, a combined piece of the threaded adjusting rod, the rotating ring sleeve and the ring sleeve pin shaft is rotatably arranged in the shaft hole, the cover plate is fixedly arranged on the top of the ball head, the switch assembly immediately starts the clutch and the brake device to stop the punch to prevent the punch from being broken and the grinding tool from being damaged due to overlarge punching stroke.

Among the above-mentioned technical scheme, preferred, be provided with two nuts on the screw thread adjusting lever, its beneficial effect lies in reducing the bolt because of the not hard up probability of vibrations.

Among the above-mentioned technical scheme, preferably, slider bottom is provided with four guide arm bolts and four compression spring, and its beneficial effect lies in that upper and lower sliding plate can steady up-and-down motion.

In the above technical scheme, preferably, the middle of the threaded adjusting rod is provided with a hexagonal opening.

The invention has the beneficial effects that: the invention provides an electric protection device of a numerical control machine tool, which aims to achieve the purposes of preventing a punch from being broken and preventing a grinding tool from being damaged due to overlarge stamping stroke, improving the product quality and greatly prolonging the service life of the grinding tool.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is a schematic view of a leader bolt of the present invention.

Fig. 4 is a partial enlarged view of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1-4, the electric protection device of the numerical control machine comprises a frame 1, wherein an adjusting connecting rod 2, a locking device 3, a crankshaft 4, a sliding block 5 and a switch assembly 6 are arranged on the frame 1.

The crankshaft 4 is rotatably arranged at the top of the frame 1, the slide block 5 is rotatably arranged on the crankshaft 4, the locking device 3 is arranged on the slide block 5, and preferably, the locking device is arranged on the bottom surface of the slide block.

The adjusting connecting rod 2 is in threaded connection with a threaded hole in the middle of the sliding block 5, the adjusting connecting rod is convenient to assemble and disassemble in a threaded matching mode, the switch assembly 6 is fixedly arranged on the sliding block 5, preferably, the switch assembly is a travel switch, and the model of the switch assembly can be selected from an LX19-001 travel switch of a Shanghai electrical appliance.

The switch assembly is electrically connected with the clutch and the punch brake, and the electrical connection mode of the switch, the clutch and the punch brake is the prior art and is not described in any more detail.

The locking device 3 comprises a guide rod bolt 31, a compression spring 32 and an upper and lower sliding plates 33, the compression spring 32 is arranged in a spring hole of the sliding block 5, the upper plane of the upper and lower sliding plates 33 is abutted against the lower bottom surface of the compression spring 32 and a contact of the switch component 6, namely, the upper plane of the upper and lower sliding plates 33 is abutted against the compression spring 32 and the contact of the switch component 6, guide holes are formed in the upper and lower sliding plates 33, and the guide rod bolt 31 penetrates through the guide holes and is fixedly arranged at the bottom of the sliding block 5.

The adjusting connecting rod 2 comprises a threaded adjusting rod 21, a nut 22, a rotating ring sleeve 23, a ring sleeve pin shaft 24, a ball head rotating rod 25 and a cover plate 26, a first through hole is formed in the middle of the upper sliding plate 33 and the lower sliding plate 33, the threaded adjusting rod 21 penetrates through the first through hole and then is in threaded connection with a threaded hole in the middle of the sliding block 5, and the nut 22 is in threaded connection with the threaded adjusting rod 21.

The rotating ring sleeve 23 is rotatably arranged on a shaft at the bottom of the thread adjusting rod 21, a second through hole is formed in the middle of the rotating ring sleeve 23, the ring sleeve pin shaft 24 penetrates through the second through hole in the bottom of the thread adjusting rod 21 in a sliding mode, a shaft hole is formed in the top of the ball head rotating rod 25, a combined piece of the thread adjusting rod 21, the rotating ring sleeve 23 and the ring sleeve pin shaft 24 is rotatably arranged in the shaft hole, and the cover plate 26 is fixedly arranged at the top of the ball head rotating rod 25.

Preferably, 2 nuts 22 are provided on the threaded adjusting rod 21.

Preferably, the bottom of the sliding block 5 is provided with 4 guide bolts 31 and 4 compression springs 32.

Preferably, the threaded adjusting rod 21 is provided with a hexagonal opening in the middle.

The working principle or the using method is as follows:

after the stroke of the punch press is adjusted, the nut 22 on the threaded adjusting rod 21 is screwed, the upper and lower sliding plates 33 press the compression spring 32 upwards along the guide rod on the guide rod bolt 31, and the switch assembly 6 is in a closed state, when the locking nut is loosened, the compression spring 32 enables the upper and lower sliding plates 33 to move downwards along the guide rod on the guide rod bolt 31, so that the switch assembly 6 is in an open state, and the switch assembly 6 controls the clutch and the brake, so that the punch stop moving.

By the aid of the device, locking nuts on the stroke adjusting connecting rods can be prevented from loosening, and the punching stroke is too large to cause punch breakage and grinding tool damage, so that the quality of punching machine products is guaranteed.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.