Flexible connection floating structure for machining

Abstract

The utility model relates to the technical field of mechanical design and manufacturing, in particular to a machining flexible connection floating structure which comprises a driving part and a driven part, one section of the driving part is connected with a sleeve arranged at one end of the driven part in a sleeved mode, and an elastic connection layer is arranged between the inner wall of the sleeve and the driven part. The elastic connecting layer is adhered to the inner wall of the sleeve and the outer surface of the driven part, and the elastic connecting layer is made of a vulcanized rubber material. The floating connection structure has a more flexible effect, meets the machining requirements of floating and swinging, and can be used for structures which cannot be provided with auxiliary supports and need to eliminate the influence of system errors.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical design, manufacturing technical field, concretely point to a kind of flexible connection floating structure for machining. BACKGROUND

[0002] In the field of machining and manufacturing, even the most precise manufacturing also has errors, and the cumulative error after assembly is even larger. Some processing or connection needs to eliminate all errors to accurately process or effectively transmit torque. For example, reamer processing needs flexible connection to eliminate the processing quality risk caused by rotation and coaxial error. The existing mechanical floating structure can only swing in practice, and even if there is radial floating, the floating amount, reliability and flexibility are still lacking.

[0003] Due to the weight of the workpiece, the floating part basically has a certain amount of "drooping" condition. When rotating, under the action of centrifugal force, it will appear "whipping" condition, and cannot normally process parts. Therefore, many tools in mechanical processing can only be used under the condition of drill jig sleeve or auxiliary support. At present, flexible processing is dominant. Processing centers cannot realize drill jig sleeve or auxiliary support, and can only use rigid processing technology. Even through NC and high-precision equipment, the system error and other factors (impurities in iron filings and cooling liquid affecting tool positioning surface) cannot be eliminated, which will still have a great impact on processing, resulting in processing size fluctuation and even producing defective products and waste products.

[0004] Therefore, it is urgent to develop a floating connection structure, which has more flexible effect, meets the processing requirements of floating and swinging, and can be used in structures that cannot be designed with auxiliary support and need to eliminate the influence of system error. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a flexible connection floating structure for machining.

[0006] A flexible connection floating structure for machining includes a driving part and a driven part. A sleeve is connected to one end of the driven part. An elastic connection layer is provided between the inner wall of the sleeve and the driven part. The elastic connection layer is bonded to the inner wall of the sleeve and the outer surface of the driven part.

[0007] Further, the elastic connection layer is made of vulcanized rubber material.

[0008] Further, an overload protection mechanism is provided between the sleeve and the driven part located in the sleeve. The overload protection mechanism includes a protection pin provided on the sleeve and penetrating the sleeve wall, and an overload protection slot provided on the driven part. The protection pin can be inserted into the overload protection slot, and an activity gap of the protection pin is left between the protection pin and the overload protection slot.

[0009] Further, the sleeve and the driven member located in the sleeve are provided with a radial run-out adjustment mechanism, the radial run-out adjustment mechanism comprises a plurality of annular clamping grooves arranged on the inner wall of the sleeve, an embedded elastic steel band is arranged in the annular clamping groove, a threaded hole in communication with the outside is arranged on the sleeve at the annular clamping groove, and an adjusting screw is screwed in the threaded hole; the width of the annular clamping groove is greater than the diameter of the corresponding threaded hole.

[0010] Further, the end face of the sleeve close to the driving member and the end face of the driven member are provided with an axial gap elimination adjustment mechanism, the axial gap elimination adjustment mechanism comprises a plurality of threaded holes arranged on the end face of the sleeve close to the driving member, and adjusting screws are arranged in the threaded holes.

[0011] Further, the end face of the sleeve close to the driving member and the end face of the driven member are provided with an axial gap elimination adjustment mechanism, the axial gap elimination adjustment mechanism comprises a plurality of threaded holes arranged on the end face of the sleeve close to the driving member, and adjusting screws are arranged in the threaded holes.

[0012] Further, the end face of the sleeve close to the driving member and the end face of the driven member are provided with an axial gap elimination adjustment mechanism, the axial gap elimination adjustment mechanism comprises a plurality of threaded holes arranged on the end face of the sleeve close to the driving member, and adjusting screws are arranged in the threaded holes.

[0013] The utility model has the beneficial effects compared with prior art:

[0014] The utility model can more flexibly realize torque transmission between two different shafts, realize 360 degree free radial floating and swing, and the floating amount and swing amount can be designed according to needs.

[0015] The structure can be used for torque transmission of holes in NC, special machine equipment and coupling with different shafts, and the quality of hole finishing, tool life and flexibility of coupling are obviously improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of a flexible connection floating structure of the utility model;

[0017] Figure 2 It is a top view schematic view of a flexible connection floating structure of the utility model;

[0018] Figure 3 It is Figure 2 A-A sectional view schematic view in the middle;

[0019] Figure 4 It is Figure 2 B-B sectional view schematic view in the middle;

[0020] Figure 5 It is Figure 2 C-C sectional view schematic view in the middle.

[0021] As shown in the figure: 1, the driving piece; 2, the driven piece; 3, the sleeve; 4, the elastic connection layer; 5, the overload protection groove; 6, the annular clamping groove; 7, the elastic steel belt; 8, the threaded hole; 9, the adjusting screw; 10, the mounting hole; 11, the fastening bolt; 12, the positioning bolt; 13, the through hole; 14, the boss; 15, the protection pin. DETAILED DESCRIPTION

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0024] In the description of the embodiments of the present application, if a certain feature is referred to as "provided", "fixed", "connected", "mounted" on another feature, it can be directly provided, fixed, connected or mounted on the other feature, or indirectly provided, fixed, connected or mounted on the other feature.

[0025] In the description of the embodiments of the present application, if "several" is referred to, it means more than one, if "a plurality of" is referred to, it means more than two, and if "greater than", "less than", "more than" is referred to, it should be understood as not including the number itself, if "and above", "and below", "and within" are referred to, they should be understood as including the number itself. If "first" and "second" are referred to, they should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] The embodiments of the present application will be described below with reference to the drawings.

[0027] A flexible connection floating structure for machining, comprising a driving part 1 and a driven part 2, a sleeve 3 is connected to one end of the driving part 1, an elastic connection layer 4 is arranged between the inner wall of the sleeve 3 and the driven part 2, and the elastic connection layer 4 is bonded to the inner wall of the sleeve 3 and the outer surface of the driven part 2.

[0028] As a preferred embodiment of the present embodiment, the elastic connection layer 4 is made of rubber material through vulcanization process. The vulcanized rubber has the characteristics of not changing viscosity and not being easy to break, and after vulcanization, a space stereo structure is formed in the raw rubber, which has high elasticity, heat resistance, tensile strength and insolubility in organic solvents, etc. The vulcanized rubber and the metal driving part and the driven part can produce strong binding force and can well transmit torque.

[0029] As a preferred embodiment of the present embodiment, as shown in Figure 2 、 Figure 3 and Figure 5 , an overload protection mechanism is arranged between the sleeve 3 and the driven part 2 located in the sleeve 3, the overload protection mechanism comprises a protection pin 4 arranged on the sleeve 3 and penetrating the wall of the sleeve 3, and an overload protection groove 5 arranged on the driven part 2, the protection pin 4 can be inserted into the overload protection groove 5, and the protection pin 4 and the overload protection groove 5 leave a movement gap of the protection pin 4, the driving part 1 drives the driven part 2 to rotate through the vulcanized rubber, when the rotation torque between the driven part 2 and the driving part 1 is overloaded, the overload protection mechanism works, that is, the protection pin 15 only abuts against the side wall of the overload protection groove 5, and replaces the vulcanized rubber to transmit torque.

[0030] As a preferred embodiment of the present embodiment, as shown in Figure 2 、 Figure 3 and Figure 4 , a radial run-out adjustment mechanism is arranged between the sleeve 3 and the driven part 2 located in the sleeve 3, the radial run-out adjustment mechanism comprises a plurality of annular clamping grooves 6 arranged on the inner wall of the sleeve 3, an elastic steel belt 7 is embedded in the annular clamping groove 6, a threaded hole 8 communicating with the outside is arranged on the sleeve 3 above the annular clamping groove 6, and an adjusting screw 9 is screwed in the threaded hole 8, the width of the annular clamping groove 6 is greater than the diameter of the corresponding threaded hole 8, when the driving part 1 and the driven part 2 are coaxial in static state, the radial run-out adjustment mechanism can reach the required value.

[0031] As a preferred embodiment of the present embodiment, as shown in Figure 3As shown in the sleeve 3 close to the end face of the driving element 1 and the end face between the driven element 2 is provided with axial gap elimination adjustment mechanism, the axial gap elimination adjustment mechanism includes the uniformly distributed several threaded holes 8 on the end face of the sleeve 3 close to the driving element 1, and the threaded hole 8 is provided with adjusting screw 9, the axial gap is adjusted through the axial gap elimination adjustment mechanism between the driving element 1 and the driven element 2.

[0032] As a preferred embodiment of the present embodiment is, as shown in the driven element 2, Figure 1 、 Figure 2 and 3 the axis of the driven element 2 away from the end of the sleeve 3 is provided with mounting hole 10, the driven element 2 is screwed with fastening bolt 11 on the side wall, the mounting hole 10 in the driven element 2 is used for installing the cutter, and the cutter is fastened through the fastening bolt 11.

[0033] As a preferred embodiment of the present embodiment is, as shown in the driven element 2, Figure 3 the end close to the driving element 1 is provided with threaded hole 8 penetrating the driven element 2 and communicating with mounting hole 10, the threaded hole 8 is provided with positioning bolt 12 from the side of mounting hole 10, the screwing depth of the positioning bolt 12 is controlled, and the depth of the cutter installed in the mounting hole 12 is controlled.

[0034] As a preferred embodiment of the present embodiment is, as shown in the driven element 2, Figure 3 the axis of the driven element 2 away from the end of the sleeve 3 is provided with mounting hole 10, the driven element 2 is screwed with fastening bolt 11 on the side wall, the mounting hole 10 in the driven element 2 is used for installing the cutter, and the cutter is fastened through the fastening bolt 11.

[0035] As a preferred embodiment of the present embodiment is, as shown in the driven element 2, Figure 3 the outside of the driven element 2 is provided with boss 14 around the overload protection groove 5, the boss 14 is embedded in the vulcanized rubber, the connection between the driven element 2 and the vulcanized rubber is increased, and the torque transmission effect is increased.

[0036] In the specific production, the driving element 1 and the driven element 2 are fixed and integrated rubber vulcanized on the special fixture after machining, heat treatment and assembly, the hardness, torque, precision, "drooping" amount and the like are checked to meet the requirements, the driving element 1 and the driven element 2 are finished as a whole, the relative precision of the driving element 1 and the driven element 2 is ensured, and the driving element 1 and the driven element 2 are adjusted to the ideal state through the "radial runout adjusting mechanism", and the axial gap of the driving element 1 and the driven element 2 is eliminated through the "axial gap elimination adjustment".

[0037] The utility model can appear the rubber stress release leads to the jumping change in the normal use process, can be adjusted through "radial runout adjusting mechanism", and the precision will be gradually stable after stress release.

[0038] The utility model discloses utilize torsional vibration damper principle, through vulcanized rubber to connect driving element 1 and driven element 2 that need float, can produce powerful combination between rubber and metal spare, can very good transmission torque well;

[0039] The utility model discloses can according to the weight of floating tool, through setting rubber vulcanization technology, control rubber hardness, guarantee its initial rigidity and floating ability, effectively control driven element initial " droop " amount, avoid affecting the quality of processing workpiece;

[0040] The utility model discloses in the manufacturing process, the coaxial error of manufacture and vulcanization, the error of vulcanized rubber stress change, can pass through the adjusting screw 8 and elastic steel band 7 of adjusting " radial swing difference adjusting mechanism " to adjust screw 8 to adjust radial swing difference through the stable extrusion vulcanized rubber of elastic steel band 7, and can adjust to 0.01mm swing difference inside through test, the axial clearance of two vulcanization connection driving element and driven element can be eliminated through " axial clearance elimination adjustment " elimination.

[0041] The utility model discloses in the using process, when meeting abnormal resistance or other overload torque, the overload protection mechanism of design on structure will replace vulcanized rubber transmission torque, avoid damaging floating mechanism function.

[0042] The above has described the utility model and its implementation, and this kind of description has no limit, and the embodiment of the utility model shown in the drawing is only one, and the actual structure is not limited to this. In general, if the ordinary skill in the art is inspired, without departing from the utility model creation tenet, does not create the structure mode and the embodiment similar to this technical scheme without creativity, all should belong to the protection scope of the utility model.

Claims

1. A mechanically processed flexible connection floating structure, characterized by: The device comprises a driving part and a driven part, a sleeve is connected to one end of the driven part, an elastic connecting layer is arranged between the inner wall of the sleeve and the driven part, and the elastic connecting layer is bonded to the inner wall of the sleeve and the outer surface of the driven part.

2. A mechanically flexible connection floating structure according to claim 1, characterized in that: The elastic connecting layer is made of rubber material through vulcanization process.

3. A mechanically flexible connection floating structure according to claim 1, characterized in that: An overload protection mechanism is arranged between the sleeve and the driven part in the sleeve, the overload protection mechanism comprises a protection pin arranged on the sleeve and penetrating the wall of the sleeve and an overload protection groove arranged on the driven part, the protection pin can be inserted into the overload protection groove, and an activity gap of the protection pin is left between the protection pin and the overload protection groove.

4. A mechanically flexible connection floating structure according to claim 1, characterized in that: A radial run-out adjustment mechanism is arranged between the sleeve and the driven part in the sleeve, the radial run-out adjustment mechanism comprises a plurality of annular clamping grooves arranged on the inner wall of the sleeve, an embedded elastic steel band is arranged in the annular clamping groove, a threaded hole in communication with the outside is arranged on the sleeve above the annular clamping groove, and an adjusting screw is screwed in the threaded hole, and the width of the annular clamping groove is greater than the diameter of the corresponding threaded hole.

5. A mechanically flexible connection floating structure according to claim 1, characterized in that: An axial gap elimination adjustment mechanism is arranged between the end face of the sleeve close to the driving part and the end face of the driven part, the axial gap elimination adjustment mechanism comprises a plurality of threaded holes arranged uniformly on the end face of the sleeve close to the driving part, and an adjusting screw is arranged in the threaded hole.

6. A mechanically flexible connection floating structure according to claim 1, characterized in that: An installation hole is arranged at the end of the axis of the driven part away from the sleeve, and a fastening bolt is screwed on the side wall of the driven part.

7. A mechanically flexible connection floating structure according to claim 6, characterized in that: A threaded hole penetrating the driven part and in communication with the installation hole is arranged at the end of the driven part close to the driving part, and a positioning bolt is arranged in the threaded hole from the installation hole side.

8. A mechanically flexible connection floating structure according to claim 6, characterized in that: A through hole penetrating the driving part and in communication with the inside of the sleeve is arranged at the shaft center of the driving part.

9. A mechanically flexible connection floating structure according to claim 3, characterized in that: A boss is arranged on the periphery of the overload protection groove on the outside of the driven part.

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