CN211052568U

CN211052568U - Finish machining clamp for flange plate and numerically controlled lathe

Info

Publication number: CN211052568U
Application number: CN201921442058.6U
Authority: CN
Inventors: 吴学意
Original assignee: Dongguan Longwen Precision Technology Co ltd
Current assignee: Dongguan Longwen Precision Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-07-21
Anticipated expiration: 2029-08-30

Abstract

The utility model belongs to the technical field of lathe processing equipment, especially, relate to a ring flange finish machining anchor clamps and numerical control lathe, ring flange finish machining anchor clamps include collet chuck and barrel casing, collet chuck is including being used for the location portion of being connected with the epaxial hydraulic pull rod drive of lathe and being used for the clamping part of centre gripping ring flange, the barrel casing is connected in the surface of location portion and the inner wall of barrel casing and the surface sliding of location portion, the one end of clamping part has the conical surface, and the one end and the location portion fixed connection of conical surface, the circumferencial direction of the other end terminal surface of clamping part is equipped with presss from both sides the mouth, when hydraulic pull rod drive collet chuck axial displacement and make barrel casing right-hand member port offset with the conical surface, the conical surface is contracted and is driven and is pressed from both. The finish machining of the flange can be completed in one clamping process, 30% of working hours are saved on the basis of the original machining, the machined part cannot be damaged, and the roundness of the product is guaranteed to be within 0.005 mm.

Description

Finish machining clamp for flange plate and numerically controlled lathe

Technical Field

The utility model belongs to the technical field of lathe processing equipment, especially, relate to a ring flange finish machining anchor clamps and numerical control lathe.

Background

Flange is a general term for a flange, which is generally used to fix other objects and parts by forming a plurality of fixing holes on the periphery of a metal body similar to a disc.

The existing flange machining is mainly divided into two procedures, firstly, the other surface is machined by taking an inner hole of one surface of the flange as a reference, then the machining of the rest part is completed by taking the machined outer circle as the reference, the machining and forming of the flange need two procedures, the clamping consumption time is more, machine adjustment needs twice, the time is consumed, the roundness and the concentricity of a product are unstable after the two times of clamping, a defective product is easy to generate, the second procedure needs to clamp the outer circle machined by the first procedure, and the machined reference surface can be damaged.

In addition, the requirement of the client on the roundness precision of the flange is high, generally, the roundness is required to be within 0.01mm, however, the existing flange clamp is adopted to clamp the flange for processing, and the use requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ring flange finish machining anchor clamps and numerical control lathe aims at solving the flange anchor clamps clamping time overlength among the prior art, and product circularity, concentricity are not high, and cause the technical problem of harm to the machined surface easily.

For realizing above-mentioned purpose, the embodiment of the utility model provides a pair of ring flange finish machining anchor clamps, including collet chuck and barrel casing, collet chuck is including being used for the location portion of being connected with the epaxial hydraulic pull rod drive of lathe and being used for the clamping part of centre gripping ring flange, the barrel casing overlap in the surface of location portion just the inner wall of barrel casing with the sliding surface connection of location portion, the clamping part with the junction of location portion forms the conical surface, the circumferencial direction of the terminal surface of clamping part is equipped with a plurality of mouthfuls of pressing from both sides, works as the hydraulic pull rod drive collet chuck axial displacement makes barrel casing right-hand member port with when the conical surface offsets, the conical surface contracts and drives it will to press from both sides the mouth shrink the ring flange presss from both sides tightly.

Optionally, a clamping groove penetrating through the spring chuck is formed in the surface of the spring chuck, and the clamping groove is communicated with the clamping opening and extends from the clamping opening to the positioning portion.

Optionally, the tail end of the clamping portion is convexly provided with an annular sheet, and the clamping openings are annularly and uniformly distributed on the periphery of the annular sheet.

Optionally, the clamping portion is provided with a transition conical surface near the outer periphery of the annular sheet.

Optionally, a protection hole is formed in the surface of the positioning portion, and the clamping groove sequentially penetrates through the transition conical surface and the conical surface along the axial direction of the collet chuck and is communicated with the protection hole.

Optionally, the number of the clamp openings and the number of the protection holes are four, and the number of the clamp grooves is four.

Optionally, the barrel casing includes a connecting barrel and a fixing disk connected with the connecting barrel, a limiting hole with internal threads is formed in the surface of the connecting barrel, a limiting groove extending towards the end of the positioning portion is formed in the surface of the positioning portion, and when the port of the connecting barrel abuts against the conical surface, the limiting hole is located right above the limiting groove.

Optionally, the fixed disk is provided with a plurality of fixing holes which are annularly and uniformly distributed.

Optionally, a numerically controlled lathe comprises the flange finish machining fixture.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the finish machining anchor clamps of ring flange have one of following technological effect at least: the utility model is used for clamping a flange plate, can reduce the clamping process and improve the processing precision of the flange plate, through inserting the cylinder on the flange plate into the clamping opening, the hydraulic pull rod is connected with the spring chuck in a driving way, drive the spring chuck to move axially in the sleeve, make the conical surface on the spring chuck abut against the port at the right end of the sleeve and compress the conical surface inwards, thereby driving the clamping opening to shrink to clamp the flange plate, then the excircle of the flange plate is processed through the external diameter reverse cutter, and the inner hole at the back of the flange plate is processed through the inner hole hook cutter, the surface changing processing is not needed, therefore, the finish processing of the flange plate can be completed under the one-step clamping process, 30 percent of working hours is saved on the original processing basis, the problems of unstable roundness due to the replacement of the clamping position can be avoided, the roundness error is reduced, and the damage to the processed position can be avoided, the roundness of the product, and then realized reducing the clamping time to the ring flange, improved circularity and the concentricity of ring flange clamping, realized reducing and caused the harm to the ring flange machined surface.

The embodiment of the utility model provides a pair of numerical control lathe, it includes foretell ring flange finish machining anchor clamps.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the numerical control lathe have one of following technological effect at least: the numerical control machine tool is also provided with the flange finish machining clamp, the numerical control machine tool is used for clamping the flange finish machining clamp, a hydraulic pull rod is arranged on a main shaft of the numerical control machine tool and provides axial power, a flange is arranged at one end of the main shaft, a sleeve is fixedly connected with the flange on the machine tool through a disc positioned at the left end of the sleeve, a spring chuck is in threaded connection with the hydraulic pull rod, the spring chuck moves axially in the sleeve under the action of the hydraulic pull rod, the hydraulic pull rod on the main shaft is started, the hydraulic pull rod drives a moving conical surface at a port of the spring chuck to abut against the conical surface and enables the conical surface to shrink, then a clamping opening is driven to shrink to clamp the flange, then an outer diameter countertool and an inner hole countertool arranged on the lathe are used for respectively machining the outer circle of the flange, save process and 30% man-hour for can not cause the unstable problem of concentricity and circularity to the finish machining of ring flange, and can not cause the harm to the position of processing, the circularity that above-mentioned ring flange finish machining anchor clamps can guarantee the product under this lathe clamping is within 0.005mm, and then has realized reducing the clamping time to the ring flange, improves the circularity and the concentricity to the ring flange clamping, realizes reducing and causes the harm to the ring flange machined surface.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is the utility model provides a flange plate finish machining anchor clamps's schematic structure view.

Fig. 2 is another schematic structural diagram of the flange finish machining fixture provided by the embodiment of the present invention.

Fig. 3 is an exploded schematic view of the flange finish machining fixture provided by the embodiment of the present invention.

Fig. 4 is a cross-sectional view of the flange finish machining fixture provided by the embodiment of the present invention.

Fig. 5 is a schematic structural view of a sleeve portion of a flange finish machining fixture according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a collet chuck part of the flange finish machining fixture provided by the embodiment of the present invention.

Fig. 7 is another schematic structural diagram of a collet chuck portion of the flange finishing jig according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-collet chuck 11-positioning part 12-clamping part

20-cylinder sleeve 21-connecting cylinder 22-fixing disc

111-protective hole 112-spacing groove 121-conical surface

122-clamping opening 123-clamping groove 124-accommodating opening

125-annular piece 126-transition conical surface 211-limiting hole

221 — fixing hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1-2, a flange finish machining fixture is provided, including collet chuck 10 and barrel casing 20, collet chuck 10 includes location portion 11 that is used for being connected with the epaxial hydraulic pull rod drive of lathe and clamping part 12 that is used for the centre gripping ring flange, barrel casing 20 overlap in location portion 11 the surface just the inner wall of barrel casing 20 with location portion 11's sliding surface connection, clamping part 12 with the junction of location portion 11 forms conical surface 121, the circumferencial direction of the terminal surface of clamping part 12 is equipped with a plurality of clamp mouths 122, and understandably, this clamp mouth 122 is open breach structure. When the hydraulic pull rod drives the collet chuck 10 to move axially and the port at the right end of the sleeve 20 abuts against the tapered surface 121, the tapered surface 121 contracts and drives the clamping opening 122 to contract to clamp the flange.

Specifically, the inner surface of the collet chuck 10 is provided with an internal thread, the outer surface of the driving end of the hydraulic pull rod is provided with an external thread, the collet chuck 10 is in threaded connection with the hydraulic pull rod, the present invention is used for clamping a flange, the clamping process can be reduced and the machining precision of the flange can be improved, the flange is inserted into the clamping opening 122 through the cylinder on the flange, the hydraulic pull rod is in driving connection with the collet chuck 10, the collet chuck 10 is driven to move axially in the sleeve 20, the sleeve 20 is fixed on the main shaft through the flange on the sleeve 20, the driving end of the hydraulic pull rod on the main shaft enters the sleeve 20, the collet chuck 10 is inserted into the sleeve 20 from the port at the right end of the sleeve 20, the collet chuck 10 is rotated to be fixedly connected with the hydraulic pull rod through threaded fit, the hydraulic pull rod is started, the collet chuck 10 moves axially in the sleeve 20 under the driving of the, after moving a certain distance, the right end port of the sleeve 20 contacts with the conical surface 121, and the axial force of the collet chuck 10 is converted into a radial force acting on the conical surface 121 under the action of the right end port of the sleeve, so that the conical surface 121 contracts radially, the clamping opening 122 penetrates from the inside of the annular piece 125 to the surface of the annular piece 125, the conical surface 121 finally drives the clamping opening 122 on the annular piece 125 to contract, thereby providing enough clamping force to clamp the cylinder on the flange inside, completing the locking of the flange, processing the inner hole at the back of the flange through the inner hole hooking cutter without changing the surface, therefore, the finish machining of the flange can be completed in one clamping process, 30% of working hours can be saved on the original basis, the problems of roundness caused by 12 positions of the clamping part and unstable concentricity can be avoided, the roundness error can be reduced, the damage to the processed part can not be caused, and the roundness error can be guaranteed to be within 0.005mm, and then realized reducing the clamping time to the ring flange, improved the circularity and the concentricity of ring flange clamping, realized reducing the purpose to the harm that the ring flange machined surface caused.

In another embodiment of the present invention, as shown in fig. 1 to 2, a clamping groove 123 penetrating into the surface of the collet chuck 10 is formed on the surface of the collet chuck 10, and the clamping groove 123 is communicated with the clamping opening 122 and extends from the clamping opening 122 to the positioning portion 11. Specifically, when the right end port of the sleeve abuts against the tapered surface 121, the tapered surface 121 reduces the widths of the clamping groove 123 and the clamping opening 122 under the radial force provided by the right end port of the sleeve, so as to clamp the flange in the direction of the center of the circle.

In another embodiment of the present invention, as shown in fig. 1-2, an annular piece 125 is protruded from the end of the clamping portion 12, and the clamping opening 122 is annularly and uniformly distributed on the periphery of the annular piece 125. Specifically, the ring piece 125 and the collet chuck 10 are integrally formed, six cylinders which are oppositely arranged are arranged behind the flange plate, four clamping openings 122 and two accommodating openings 124 are arranged on the ring piece 125, the inner diameter of each clamping opening 122 is slightly larger than the diameter of the cylinder by 0.1-0.2mm, the inner diameter of each accommodating opening 124 is larger than the inner diameter of each clamping opening 122, four of the six cylinders are inserted into the clamping openings 122, two of the six cylinders are inserted into the accommodating openings 124, the ring piece 125 can correspondingly change the size of the ring plate according to the size of the ring plate, and the practicability of the clamp is improved.

In another embodiment of the present invention, as shown in fig. 1-2, the clamping portion 12 is provided with a transition conical surface 126 near the periphery of the annular plate 125. Specifically, the transition taper surface 126 has a transition function, which can reduce the caliber of the collet chuck 10, so that the size of the ring piece 125 is not too large, and the size of the ring piece 125 is easily adapted to the size of the flange of the applied construction method.

In another embodiment of the present invention, as shown in fig. 1 to 2, a protection hole 111 is further formed on the surface of the positioning portion 11, and the clamping groove 123 sequentially passes through the transition conical surface 126 and the conical surface 121 along the axial direction of the collet chuck 10 and communicates with the protection hole 111. Specifically, the protection hole 111 is used to prevent the crack generated by the clamp groove 123 existing on the surface of the collet chuck 10 from affecting the service life of the collet chuck 10 due to the existence of the clamp groove 123.

In another embodiment of the present invention, as shown in fig. 1 to 2, the number of the clamping openings 122 and the number of the protection holes 111 are four, and the number of the clamping grooves 123 is four. Specifically, the number of the clamping openings 122 is four and corresponds to four clamping grooves 123, each clamping groove 123 corresponds to one protection hole 111, and the four clamping grooves 123 and the four clamping openings 122 can provide enough shrinkage size of the conical surface 121 and clamping force of the flange plate, so that the service life of the clamp is ensured, and the processing difficulty of the clamp is reduced.

In another embodiment of the present invention, as shown in fig. 1 to 2, the sleeve 20 includes a connecting cylinder 21 and a fixing plate 22 connected to the connecting cylinder 21, a limiting hole 211 having an internal thread is formed on the surface of the connecting cylinder 21, a limiting groove 112 extending toward the end of the positioning portion 11 is formed on the surface of the positioning portion 11, and when the port of the connecting cylinder 21 abuts against the conical surface 121, the limiting hole 211 is located directly above the limiting groove 112. Specifically, the collet chuck 10 is located inside the connecting cylinder 21, six limiting grooves 112 are formed in the upper surface of the positioning portion 11, six limiting holes 211 are formed in the surface of the connecting cylinder 21, and the six limiting holes 211 correspond to the six limiting grooves 112, respectively. When the clamping opening 122 reaches a certain locking force, the six limiting holes 211 are positioned right above the limiting groove 112, a plurality of screws are screwed on the limiting holes 211, the tail parts of the screws are abutted against the limiting groove 112, and the screws jointly act to provide enough friction force for locking the spring chuck 10 so as to lock the spring chuck 10.

In another embodiment of the present invention, as shown in fig. 1-2, the fixing plate 22 is provided with a plurality of fixing holes 221 uniformly distributed in a ring shape. Specifically, the fixing holes 221 on the fixed disk 22 correspond to holes in a flange on a machine tool, and the sleeve is fixed on a main shaft of the machine tool by matching the fixed disk 22 and the flange on the machine tool.

The utility model discloses another embodiment provides a numerical control lathe, it includes foretell ring flange finish machining anchor clamps. Specifically, in this embodiment, because the flange finish machining fixture is provided, a numerical control machine for clamping the flange finish machining fixture is further provided, a hydraulic pull rod is arranged on a main shaft of the numerical control machine, the hydraulic pull rod provides axial power, a flange is arranged at one end of the main shaft, the sleeve 20 is fixedly connected with the flange through a fixing disc 22 at the left end of the main shaft, the collet chuck 10 is in threaded connection with the hydraulic pull rod, so that the collet chuck 10 axially moves in the sleeve under the action of the hydraulic pull rod, the hydraulic pull rod on the main shaft is started, the hydraulic pull rod drives a port of the collet chuck 10 to move at a conical surface 121 and pushes against the conical surface 121 to contract the conical surface 121, so as to drive a clamping opening 122 to contract the flange to clamp, then an outer circle of the flange and an inner hole behind the flange are respectively machined by using an outer diameter reverse cutter and an inner hole reverse cutter installed, save process and man-hour for can not cause the unstable problem of concentricity and circularity to the finish machining of ring flange, and can not lead to the fact the harm to the position of processing, above-mentioned ring flange finish machining anchor clamps have guaranteed under this lathe clamping that the ring flange circularity error of processing is within 0.01mm, and then has realized reducing the clamping time to the ring flange, improve circularity and concentricity to the ring flange clamping, realize reducing the harm that causes the ring flange machined surface.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a ring flange finish machining anchor clamps which characterized in that: including collet chuck and barrel casing, collet chuck is including being used for with the main epaxial hydraulic pull rod drive of lathe location portion of being connected and the clamping part that is used for the centre gripping ring flange, the barrel casing overlap in the surface of location portion just the inner wall of barrel casing with the surface sliding connection of location portion, the clamping part with the junction of location portion forms the conical surface, the circumferencial direction of the terminal surface of clamping part is equipped with a plurality of mouths that press from both sides, works as the hydraulic pull rod drive collet chuck axial displacement makes barrel casing right-hand member port with when the conical surface offsets, the conical surface contracts and drives press from both sides the mouth shrink will the ring flange presss from both sides tightly.

2. The flange finishing jig of claim 1, wherein: the surface of the spring chuck is provided with a clamping groove which penetrates through the spring chuck, and the clamping groove is communicated with the clamping opening and extends from the clamping opening to the positioning part.

3. The flange finishing jig of claim 2, wherein: the tail end of the clamping part is convexly provided with an annular sheet, and the clamping openings are annularly and uniformly distributed on the periphery of the annular sheet.

4. The flange finishing jig of claim 3, wherein: the periphery of the clamping part close to the annular sheet is provided with a transition conical surface.

5. The flange finishing jig of claim 4, wherein: the surface of the positioning part is provided with a protection hole, and the clamp groove sequentially penetrates through the transition conical surface and the conical surface along the axial direction of the spring clamp and is communicated with the protection hole.

6. The flange finishing jig of claim 5, wherein: the clamp openings and the protection holes are four, and the clamp grooves are four.

7. The flange finishing jig of any one of claims 1 to 6, wherein: the barrel casing includes the connecting cylinder and with the fixed disk that the connecting cylinder is connected, the surface of connecting cylinder is equipped with the spacing hole that has the internal thread, the surface of location portion is seted up to the spacing groove that extends to its tip, works as the connecting cylinder port with when the conical surface offsets, spacing hole is located directly over the spacing groove.

8. The flange finishing jig of claim 7, wherein: the fixed disk is provided with a plurality of fixing holes which are uniformly distributed in an annular manner.

9. A numerically controlled lathe is characterized in that: comprising the flange finishing jig of any one of claims 1 to 8.