CN219026863U

CN219026863U - Novel dynamometer carries on platform

Info

Publication number: CN219026863U
Application number: CN202223451484.0U
Authority: CN
Inventors: 易了; 吕浩宇
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-16
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a novel load cell carrying platform, which comprises a connecting plate, wherein the upper plane of the connecting plate is connected to the lower plane of a load cell in a threaded manner, and the lower plane of the connecting plate is connected to a fixed platform; u-shaped holes are formed in two sides of the connecting plate, a first groove is formed in the U-shaped holes, and threaded holes are formed in the first groove; the fixing platform is provided with a T-shaped groove, the fixing platform is connected with the connecting plate through bolts penetrating through the T-shaped groove and the U-shaped holes, a positioning key is arranged in the first groove, and the fixing key is fixed in the first groove through a set screw; the positioning key is embedded into the T-shaped groove, so that the axial positioning of the fixed platform and the dynamometer is realized.

Description

Novel dynamometer carries on platform

Technical Field

The utility model belongs to the technical field of carrying a dynamometer, and particularly relates to a novel dynamometer carrying platform.

Background

Cutting forces are the physical quantities that most directly reflect the interaction of the tool with the workpiece during cutting. Therefore, in cutting work research, a high performance dynamic load cell is typically used to monitor cutting force signals in real time, thereby monitoring the cutting process. The force measuring instrument belongs to a high-precision precious instrument, and needs to be reliably and safely installed in a cutting process system to realize accurate measurement of dynamic cutting force and ensure that the force measuring instrument is not damaged. The upper part of the dynamometer is connected with a workpiece clamping device. The device is used for reliably clamping a workpiece or a cutter (for simplifying the text discussion, the cutter is omitted from the following description), ensuring that the position of the workpiece is reasonable and does not move in the cutting process, and simultaneously stably transmitting the cutting force to the dynamometer.

The workpiece clamping schemes in the prior art are generally of several types. The first type is to bond a workpiece on a flat plate by paraffin, and connect the flat plate as a workpiece clamping device on the upper part of a dynamometer; the other type adopts a universal vice, is arranged on the upper part of the dynamometer and is used for clamping a workpiece. The lower part of the dynamometer is connected with a mounting plate. The device is used for installing a dynamometer system on a machine tool workbench. The lower part connection in the prior art scheme is usually to directly place the dynamometer on the workbench, compress tightly through a general pressing plate or a special vice for the workbench, or fix by utilizing the electromagnetic suction force of an electromagnetic workbench.

In the existing workpiece clamping scheme, the paraffin is adopted, but the paraffin is required to be melted, cooled and remelted in the process of mounting and dismounting the workpiece, and the workpiece is usually required to be frequently replaced in the actual production or experimental research process, so that the repeated process requires a long time, and the accurate position of the workpiece is not easy to ensure. By adopting the scheme of the universal vice, although a special clamping device is not needed, the connection size between the vice and the dynamometer is often not matched, so that the connection is difficult, and the installation accuracy of the universal vice is low. Some specially designed clamps have complex structures, more parts and high cost. Some simple clamps are unreliable in positioning and clamping or cannot adapt to clamping of workpieces with wide thickness variation ranges.

In the existing dynamometer lower portion connection scheme, the scheme that the dynamometer is directly pressed on the workbench by the pressing plate or the vice is adopted, if the dynamometer connection portion is possibly damaged due to overlarge force, moreover, the fastening force born by the dynamometer is possibly uneven due to the fact that the size of the connecting portion of the pressing plate and the vice is not necessarily matched, and measurement accuracy is affected. While electromagnetic tables are generally used on grinding machines, less electromagnetic tables are used on milling machines, drilling machines and lathes.

Disclosure of Invention

The utility model aims to solve the problems of frequent workpiece replacement, mismatching of connection sizes, low installation precision, complex structure and the like in the prior art, and provides a novel load cell mounting platform.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel load cell carrying platform comprises a connecting plate, wherein the upper plane of the connecting plate is connected to the lower plane of the load cell in a threaded manner, and the lower plane of the connecting plate is connected to a fixed platform; u-shaped holes are formed in two sides of the connecting plate, a first groove is formed in the U-shaped holes, and threaded holes are formed in the first groove; the fixing platform is provided with a T-shaped groove, the fixing platform is connected with the connecting plate through bolts penetrating through the T-shaped groove and the U-shaped holes, a positioning key is arranged in the first groove, and the fixing key is fixed in the first groove through a set screw; the positioning key is embedded into the T-shaped groove, so that the axial positioning of the fixed platform and the dynamometer is realized.

Preferably, the upper plane of the dynamometer is connected to a clamp body in a threaded manner, a groove is formed in the upper side of the clamp body, one side surface of the groove is a groove plane, the other side surface of the groove is a groove inclined surface, a wedge block is arranged at the groove inclined surface, and the wedge block and the groove plane jointly act to clamp a workpiece.

Preferably, the wedge block is provided with a wedge block inclined plane, and the wedge block inclined plane is matched with the groove inclined plane and can move relatively along the groove inclined plane so as to clamp a workpiece in a matched mode with the groove.

Preferably, a groove threaded hole is formed in the bottom surface of the groove and used for fixing the wedge, a second groove with a countersunk head is correspondingly formed in the wedge, and a screw penetrates through the countersunk head and is screwed into the groove threaded hole to fix the wedge.

Preferably, the positioning key is of a cube structure, a positioning key through hole is formed in the middle of the positioning key, and the positioning key is fixedly connected in the first groove on the lower plane of the connecting plate through the positioning key through hole by a set screw. The positioning key is embedded in the T-shaped groove, so that the axial positioning of the fixed platform and the dynamometer is realized.

The utility model has the following beneficial effects: the utility model provides a special workpiece clamping device and a connecting plate. The workpiece clamping device is reliably connected with the upper part of the dynamometer, can be used for accurately positioning a workpiece, and can be quickly installed and detached. The method is applicable to workpieces with a certain size variation range. The lower part of the dynamometer is connected to a special connecting plate, and can be quickly and accurately positioned and fixed by being connected with a machine tool workbench, so that the whole dynamometer platform is built. The platform has the advantages of simple structure, small volume, low processing technology requirement, convenient installation and use, high reliability, wide applicable machine tool range and the like, and is particularly suitable for occasions of frequent cutting force test or monitoring such as milling, turning and the like by utilizing the dynamometer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without the inventive effort of the first person skilled in the art.

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

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

FIG. 3 is a top view of the present utility model;

FIG. 4 is a schematic view of a connection plate of the present utility model, shown in FIG. 1;

FIG. 5 is a schematic view of a connection plate of the present utility model, shown in FIG. 2;

FIG. 6 is a schematic diagram of a load cell of the present utility model;

FIG. 7 is a schematic view of a clip body of the present utility model;

FIG. 8 is a schematic view of a wedge block of the present utility model;

FIG. 9 is a schematic view of a positioning key of the present utility model.

In the figure: 1-a fixed platform; 2-connecting plates; 21-a first threaded hole; 22-U-shaped holes; 23-a first trench; 24-a second threaded hole; 3-a force gauge; 31-a third threaded hole; 32-a first counterbore; 4-a clamp body; 41-a second counterbore; 42-groove slope; 43-fourth threaded hole; 44-groove floor; 45-groove plane; 5-connecting screws; 6-wedge blocks; 61-wedge ramp; 62-wedge bottom surface; 63-wedge plane; 64-a second trench; 7-a workpiece; 8-hexagonal nuts; 9-plain washers; 10-bolts; 11-positioning key; 111-positioning key sides; 112-positioning key through holes; 12-set screw.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, 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, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by the first skilled in the art without inventive effort, are intended to be within the scope of the present utility model, based on the embodiments herein. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by the first skilled in the art without inventive effort, are intended to be within the scope of the present utility model, based on the embodiments herein.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by a first person skilled in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Examples

The following is only a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the following examples, but all technical solutions belonging to the concept of the present utility model are within the scope of the present utility model.

Referring to the accompanying drawings 1-3 of the specification, a novel load cell carrying platform comprises a connecting plate 2, wherein the upper plane of the connecting plate 2 is connected to the lower plane of the load cell in a threaded manner, and the lower plane of the connecting plate 2 is connected to a fixed platform 1; referring to the specification 4-5, a first threaded hole 21 is formed in the upper plane of the connecting plate 2 and is used for being in threaded connection with the dynamometer 3, U-shaped holes 22 are formed in two sides of the connecting plate 2, a first groove 23 is formed in the U-shaped holes 22, and a second threaded hole 24 is formed in the first groove; the fixing platform 1 is provided with a T-shaped groove, the fixing platform 1 is connected with the connecting plate 2 through the T-shaped groove and the U-shaped hole 22 by the bolt 10, a positioning key 11 is arranged in the first groove 23, and the positioning key is fixed in the first groove 23 by the set screw 12; the positioning key 11 is embedded in the T-shaped groove, so that the axial positioning of the fixed platform 1 and the dynamometer is realized.

Referring to fig. 6 of the specification, a plurality of third threaded holes 31 are arranged in the middle of the upper plane of the dynamometer in an array sequence, the dynamometer is provided with a plurality of first countersunk holes 32, the number and the positions of the first countersunk holes 32 correspond to those of the first threaded holes 21, and the connection of the connecting plate and the dynamometer is realized by connecting countersunk threads in the first countersunk holes 21 to the first threaded holes 21.

Referring to fig. 7-8 of the specification, the upper plane of the dynamometer is in threaded connection with a fixture body 4, a groove is formed above the fixture body, one side surface of the groove is a groove plane 45, the other side surface of the groove is a groove inclined surface 42, a wedge-shaped block 6 is arranged at the groove inclined surface, and the wedge-shaped block 6 and the groove plane 45 work together to clamp a workpiece. The wedge 6 has a wedge bevel 61, the wedge bevel 61 cooperating with the groove bevel 42 and being able to perform a relative movement (sliding along the bevel) along the groove bevel 42 to cooperate with the groove for clamping the workpiece 7. The bottom surface 44 of the groove is provided with a fourth threaded hole 43 for fixing the wedge-shaped block 6, the wedge-shaped block 6 is correspondingly provided with a second groove 64 with a countersunk head, and a screw penetrates through the countersunk head of the second groove 64 and is screwed in the fourth threaded hole 43 to fix the wedge-shaped block 6.

Referring to fig. 9 of the specification, the positioning key 11 has a cubic structure, the side 111 of the positioning key is embedded into the T-shaped groove, a positioning key through hole 112 is formed in the middle of the positioning key, and the positioning key is fixedly connected in the first groove 23 on the lower plane of the connecting plate 2 through the positioning key through hole by a set screw 12. The positioning key 11 is embedded in the T-shaped groove, so that the axial positioning of the fixed platform 1 and the dynamometer is realized.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. The novel dynamometer carrying platform is characterized by comprising a connecting plate, wherein the upper plane of the connecting plate is connected to the lower plane of the dynamometer in a threaded manner, and the lower plane of the connecting plate is connected to a fixed platform; u-shaped holes are formed in two sides of the connecting plate, a first groove is formed in the U-shaped holes, and threaded holes are formed in the first groove; the fixing platform is provided with a T-shaped groove, the fixing platform is connected with the connecting plate through bolts penetrating through the T-shaped groove and the U-shaped holes, a positioning key is arranged in the first groove, and the fixing key is fixed in the first groove through a set screw; the positioning key is embedded into the T-shaped groove, so that the axial positioning of the fixed platform and the dynamometer is realized.

2. The novel load cell mounting platform of claim 1, wherein the upper plane of the load cell is in threaded connection with a fixture body, a groove is formed above the fixture body, one side surface of the groove is a groove plane, the other side surface of the groove is a groove inclined surface, a wedge block is arranged at the groove inclined surface, and the wedge block and the groove plane jointly act to clamp a workpiece.

3. The novel load cell mounting platform of claim 2 wherein said wedge has a wedge bevel, said wedge bevel engaging said groove bevel and being capable of relative movement along said groove bevel to engage said groove to clamp a workpiece.

4. A novel load cell mounting platform according to claim 2 or 3, wherein the bottom surface of the recess is provided with a recess screw hole for fixing the wedge, the wedge is correspondingly provided with a second groove with a countersunk head, and a screw is passed through the countersunk head and screwed into the recess screw hole to fix the wedge.

5. The novel dynamometer carrying platform of claim 1, wherein the positioning key is of a cube structure, a positioning key through hole is formed in the middle of the positioning key, the positioning key through hole is connected and fixed in a first groove in the lower plane of the connecting plate through a set screw, and the positioning key is embedded in the T-shaped groove to realize axial positioning of the positioning platform and the dynamometer.