CN210731876U

CN210731876U - Real-time on-line measuring device for clamping force of lathe clamping mechanism

Info

Publication number: CN210731876U
Application number: CN201921211947.1U
Authority: CN
Inventors: 陈昱廷; 陈彦泓
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-12
Anticipated expiration: 2029-07-30

Abstract

A real-time on-line measuring device for clamping force of lathe clamping mechanism is composed of a chuck and multiple clamping mechanisms, each of which has a slide block with shear sensing slot on its side wall and a claw for measuring the clamping force, and a clamping force measuring unit for measuring the clamping force and feeding it back to user.

Description

Real-time on-line measuring device for clamping force of lathe clamping mechanism

Technical Field

The utility model relates to a measuring device indicates a real-time online measuring device of lathe fixture clamping-force especially, can directly measure fixture's clamping-force when fixture application of force is in the work piece, regulates and control the oil pressure of chuck again after that, reaches the effect of real-time adjustment fixture clamping-force.

Background

In the era of intelligent machinery, the control of process parameters is of great importance, when a lathe is processed, a clamping mechanism is used for clamping a workpiece to rotate, a cutter is used for cutting the workpiece, whether the workpiece is clamped stably by the clamping mechanism or not is greatly influenced on the processing quality, particularly for thin workpieces, the clamping force is abnormally important to control, the workpiece is deformed due to the fact that the clamping force is too large, and the size of the original processed workpiece forms a drop.

The clamping force of the clamping mechanism is adjusted by adjusting the hydraulic pressure inputted into the hydraulic rotary cylinder, but there is a large series of mechanisms between the hydraulic rotary cylinder and the clamping mechanism, so it is difficult to know the real output force of the clamping mechanism, and the mechanism will wear over a long period of time, so the clamping force will decrease with time under the same operating pressure.

Therefore, how to develop an innovative structure with more ideal practicability for the above problems is really the eager and desired of consumers, and is also the goal and direction of the related manufacturers to make an effort to develop and break through.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of measurationing on real-time line of lathe fixture clamping-force, its simple structure, convenient operation can the real-time clamping-force of measurationing fixture, provides the data of real-time adjustment to better provide centre gripping effect and cutting effect.

In order to achieve the above object, the utility model discloses a device of measurationing on real-time line of lathe fixture clamping-force, its characterized in that includes:

the clamping head is provided with a plurality of T-shaped grooves in a radial and equiangular manner by the center, the T-shaped grooves are positioned on the same horizontal plane, and each clamping mechanism is movably arranged in the corresponding T-shaped groove;

each clamping mechanism is provided with a sliding block and a claw, the outer side wall of the sliding block is concavely provided with at least one shear force sensing groove corresponding to the combination position of the claw, and the shear force sensing groove is provided with a clamping force measuring unit.

Wherein, the inner side wall surface of the shearing force sensing groove is provided with at least one channel towards the direction different from the direction of the claw, the channel penetrates through the sliding block, and a connecting wire of the clamping force measuring unit is placed in the channel.

The outer wall surfaces of two sides of the sliding block are respectively provided with the shear force sensing grooves in a concave mode, the inner wall surface of each shear force sensing groove is provided with a channel in the direction different from the direction of the claw, and the channels are converged in the center and penetrate through the sliding block in the direction different from the direction combining the claw.

Wherein, one side of this slider sets up a fixed slot, and this claw one side sets up a fixed block, and this fixed block and this fixed slot correspond the setting, and this slider inside wall bottom edge is protruding to be established a plurality of blocks of supporting, and each blocks the displacement of spacing this claw, and this fixed block displacement is restricted to these blocks of supporting so that this claw combines with this slider.

Wherein, the slider sets up a first tooth row towards the one side of this claw, and the one side that this claw corresponds sets up a second tooth row, and this first tooth row sets up with this second tooth row is corresponding.

The center of the chuck is provided with a movable push block on one side different from the clamping mechanisms, the push block is provided with a plurality of inclined limiting grooves, the inner surfaces of the limiting grooves are parallel, the bottom of each sliding block is convexly provided with a movable block corresponding to each limiting groove, and each movable block moves in each corresponding limiting groove.

The center of the chuck is provided with a limiting block, one end of the limiting block forms an end face, each clamping mechanism forms a groove corresponding to the end face, and the periphery of the end face is clamped against the corresponding groove, so that the displacement of the push block can be limited by the end face facing to one face of the push block.

By the structure, when the clamping mechanisms apply force to a workpiece, the clamping force measuring units can measure the clamping force of each clamping mechanism in real time and transmit the clamping force to an intelligent device, and a user can control the oil pressure input into the chuck according to the clamping force measured in real time so as to change the clamping force of the clamping mechanisms; when the clamping force changes, each clamping force measuring unit will sense the shear strain caused by the clamping force again and feed back the signal to the intelligent device, so as to provide the user to further adjust the hydraulic pressure of the chuck in real time, thereby maintaining the high-precision processing quality.

Drawings

FIG. 1: is a three-dimensional schematic diagram of the utility model;

FIG. 2: is a three-dimensional decomposition schematic diagram of the utility model;

FIG. 3: is a three-dimensional schematic view of the slide block of the utility model;

FIG. 4: is a schematic cross-sectional view of 4-4 of FIG. 3;

FIG. 5: is a three-dimensional schematic diagram of the other side of the sliding block of the utility model;

FIG. 6: is a schematic diagram of the relative movement between the push block and the clamping mechanism of the utility model;

FIG. 7: is a schematic cross-sectional view of 7-7 of FIG. 6;

FIG. 8: the clamping mechanism of the present invention feeds back the value to the intelligent device after applying force to the workpiece;

FIG. 9: do the utility model discloses the schematic diagram of replacing each claw.

Detailed Description

Referring to fig. 1 and 2, the present invention discloses a real-time on-line measuring device for clamping force of lathe clamping mechanism, which has a collet 12 and a plurality of clamping mechanisms 20, each clamping mechanism 20 has a slider 22 and a claw 24, the collet 12 is provided with a plurality of T-shaped slots 121 radially and equiangularly around the center, the T-shaped slots 121 are located on the same horizontal plane, each clamping mechanism 20 is movably disposed in the corresponding T-shaped slot 121, at least one shear force sensing slot 221 is concavely disposed on the outer side wall of the slider 22 corresponding to the combining position of the claw 24, a clamping force measuring unit 222 is accommodated in the shear force sensing slot 221, a plurality of abutting blocks 224 are convexly disposed on the bottom edge of the inner side wall of the slider 22, and each abutting block 224 limits the displacement of the claw 24; thus, any force application or force feedback of each clamping mechanism 20 is sensed by each clamping force measuring unit 222 in real time.

With reference to fig. 2, a first tooth row 271 is disposed on a surface of the slider 22 facing the claw 24, a second tooth row 272 is disposed on a surface of the slider 24 corresponding to the claw 24, and the first tooth row 271 and the second tooth row 272 are disposed correspondingly to limit the axial displacement capability of the slider 22 and the claw 24; in addition, a limit block 29 may be disposed at the center of the chuck 12, an end surface 291 is formed at one end of the limit block 29, a groove 201 is formed on each of the clamping mechanisms 20 corresponding to the end surface, and the periphery of the end surface 291 abuts against the corresponding groove 201.

Referring to fig. 3 to 5 in combination with fig. 2, it is disclosed that the shear force sensing grooves 221 are respectively recessed on two side surfaces of the slider 22, and each shear force sensing groove 221 is provided with the clamping force measuring unit 222, after the slider 22 is sectioned, the shear force sensing grooves 221 are respectively recessed on two outer wall surfaces of the slider 22, a channel 2211 is respectively formed on an inner side wall surface of each shear force sensing groove 221 in a direction different from the direction of the claw 24, each channel 2211 penetrates through the slider 22, and converges in a central aggregation in a direction different from the direction combining with the claw 24 and penetrates through the slider 22, a connection line 223 of each clamping force measuring unit 222 is placed in the corresponding channel 2211, and each channel 2211 can optimize the storage of the connection lines 223 and reduce the possibility of winding of the connection lines 223; in the above, the shear force sensing groove 221 may be recessed only on one side of the slider 22, that is, only one channel 2211 is opened and penetrates through the slider 22, and the connecting line 223 of the clamping force measuring unit 222 may be placed in the channel 2211.

Referring to fig. 6 and 7 in conjunction with fig. 2, a movable pushing block 14 is disposed at a center of the chuck 12, which is different from one side of the clamping mechanisms 20, the end surface 291 of the limiting block 29 faces one side of the pushing block 14 to limit displacement of the pushing block 14, the pushing block 14 has a plurality of oblique limiting grooves 262, inner surfaces of the limiting grooves 262 are parallel, a moving block 261 is convexly disposed at a bottom of each sliding block 22 corresponding to each limiting groove 262, and each moving block 261 displaces corresponding limiting groove 262; as shown in fig. 6, if the pushing block 14 is displaced upward, the moving block 261 moves inward along the inclined surface of the corresponding limiting groove 262, so that the clamping mechanisms 20 approach each other; on the contrary, if the pushing block 14 is displaced downward (not shown), the clamping mechanism 20 will move outward along the inclined surface of the limiting groove 262, so that the clamping mechanisms 20 move away in the opposite direction. Thus, by adjusting the displacement of the pushing blocks 14, the sliding blocks 22 can be moved radially relative to the center of the chuck 12.

Referring to fig. 8 in conjunction with fig. 2 and 7, after the clamping mechanisms 20 fix a workpiece 30, the workpiece 30 is pressed closely, at this time, the region of each shear force sensing groove 221 receives the shear force, each shear force sensing groove 221 will measure through each clamping force measuring unit 222 and transmit a signal to an intelligent device 32, and a user can control the hydraulic pressure input to the chuck 12 according to the clamping force measured in real time to change the clamping force of the clamping mechanisms 20; when the clamping force of the clamping mechanisms 20 changes, the clamping force measuring units 222 can immediately sense the difference and feed back a signal to the intelligent device 32, so as to provide the user with further adjustment of the hydraulic pressure of the chuck 12, thereby maintaining high precision processing quality.

Referring to fig. 9 in conjunction with fig. 2 and 8, in order to match the size and hardness of each workpiece 30, the claw 24 can be replaced to match the workpiece, and in order to achieve the above object, the present invention provides a fixing groove 252 at one side of the slider 22, a fixing block 251 at one side of the claw 24, the fixing block 251 and the fixing groove 252 being disposed correspondingly, and the fixing block 252 being limited by the engaging blocks 224, so that the claw 24 is combined with the slider 22; therefore, each fixing block 251 can slide to the corresponding fixing groove 252, so that each claw 24 is displaced on each sliding block 22, thereby achieving the purpose of replacing the claws 24.

Claims

1. The utility model provides a real-time online measuring device of lathe fixture clamping-force which characterized in that includes:

2. The apparatus of claim 1, wherein the inner sidewall of the shear sensing groove is opened with at least one channel facing a direction different from the direction of the claw, the channel extends through the slide, and a connection line of the clamping force measuring unit is disposed in the channel.

3. The apparatus of claim 1, wherein the outer wall surfaces of the slider are recessed with the shear force sensing grooves, and the inner wall surfaces of the shear force sensing grooves are opened with a channel in a direction different from the direction of the claw, and the channels converge in the center and penetrate the slider in a direction different from the direction of the claw.

4. The apparatus as claimed in claim 1, wherein a fixing groove is formed at one side of the slide block, a fixing block is formed at one side of the claw, the fixing block is disposed corresponding to the fixing groove, a plurality of engaging blocks are protruded at a bottom edge of an inner sidewall of the slide block, each engaging block limits a displacement of the claw, and the fixing block displacement is limited by the engaging blocks to couple the claw and the slide block.

5. The apparatus of claim 4, wherein the slide is provided with a first row of teeth on a side facing the claw, and a second row of teeth on a side corresponding to the claw, the first row of teeth being disposed corresponding to the second row of teeth.

6. The real-time on-line measuring device for clamping force of lathe clamping mechanism as claimed in claim 1 or 4, wherein a movable push block is disposed at the center of the chuck at a side different from the clamping mechanisms, the push block has a plurality of inclined limiting grooves, the inner surfaces of the limiting grooves are parallel, a moving block is protruded at the bottom of each slide block corresponding to each limiting groove, and each moving block is displaced in the corresponding limiting groove.

7. The apparatus as claimed in claim 6, wherein the chuck has a stop block at a center thereof, one end of the stop block forms an end surface, each clamping mechanism forms a groove corresponding to the end surface, and the periphery of the end surface abuts against the corresponding groove so that the end surface faces the push block to limit the displacement of the push block.