CN214392392U

CN214392392U - Inner hole machine clamping cutter bar

Info

Publication number: CN214392392U
Application number: CN202022675219.5U
Authority: CN
Inventors: 杨明华; 程丽; 马源
Original assignee: Shenyang University
Current assignee: Shenyang University
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-10-15
Anticipated expiration: 2030-11-18

Abstract

The utility model provides a hole machine clamp cutter arbor, include, the cutter arbor, the one end of cutter arbor is provided with the blade, the round hole has been seted up on the blade, the round hole is located the one end of blade, the shape of cutter arbor is cylindrical, the shape of blade is convex to the junction of blade and cutter arbor is provided with the recess. The utility model provides a hole machine clamp cutter arbor has through special course of working, makes the intensity reinforcing of hole cutter, increases the life of hole cutter to required material when the special shape of hole cutter can reduce the production hole cutter, thereby reduces manufacturing cost.

Description

Inner hole machine clamping cutter bar

Technical Field

The utility model relates to a processing cutter technical field especially relates to a hole machine presss from both sides cutter arbor.

Background

The cutter for machining the inner hole of the numerical control lathe has to meet the machining requirement, the overhang length of the cutter bar is short, the cutter bar does not interfere with a workpiece in the whole machining process, and the problems of the section size, the rigidity and chip breaking and removal of the cutter bar are considered.

In the prior art, the inner hole cutter cannot meet the requirements for turning, so that the inner hole cutter is easy to damage after being used for a period of time, and the inner hole cutter needs to be replaced, thereby increasing the manufacturing cost.

Therefore, there is a need for a clamping bar for an inner hole machine that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hole machine presss from both sides cutter arbor has solved the problem that the required condition of turning can't be satisfied to the hole cutter.

In order to solve the technical problem, the utility model provides an inner hole machine presss from both sides cutter arbor, include: the cutter bar, the one end of cutter bar is provided with the blade, the round hole has been seted up on the blade, the round hole is located the one end of blade.

Preferably, the cutter bar is cylindrical in shape.

Preferably, the shape of the blade is circular arc, and a groove is arranged at the joint of the blade and the cutter bar.

Preferably, the mounting device further comprises a mounting assembly, wherein the mounting assembly is fixed inside the cutter bar and comprises a mounting groove, and a mounting rod is slidably connected inside the mounting groove; the clamping assembly is fixed inside the mounting rod and comprises a fixing groove, an L-shaped rod is connected inside the fixing groove in a sliding mode, a clamping groove is formed in the mounting rod, and one end of the L-shaped rod is fixedly connected with an inclined rod; the fixing assembly is fixed inside the mounting groove and comprises a fixing plate, a convex groove is formed in the fixing plate, two convex blocks are connected inside the convex groove in a sliding mode, a first spring is fixedly connected between the two convex blocks, a sliding groove is formed in the fixing plate, and an inclined rod is fixedly connected to the convex blocks; the pulling assembly is fixed in the mounting groove, the pulling assembly comprises a pulling rod, one end of the pulling rod is fixedly connected with a pulling disk, the surface of the pulling rod is fixedly connected with a limiting disk, and a second spring is sleeved on the surface of the pulling rod.

Preferably, the mounting groove is formed in the interior of the cutter bar, the mounting bar is fixed on the blade, and the second spring is located on the right side of the limiting disc.

Preferably, the fixed slot is opened in the inside of installation pole, the one end of L shape pole with joint groove looks adaptation, the down tube with pulling dish sliding connection, the pulling pole with installation groove sliding connection.

Preferably, the fixing plate is fixed inside the mounting groove, the convex block is fixedly connected with one end of the inclined rod, the inclined rod is located inside the sliding groove, and the inclined rod is slidably connected with the inner surface of the sliding groove.

Compared with the prior art, the utility model provides an inner hole machine presss from both sides cutter arbor has following beneficial effect:

the utility model provides a hole machine clamp cutter arbor through special course of working, makes the intensity reinforcing of interior hole cutter, increases the life of interior hole cutter to the special shape of interior hole cutter can reduce required material when producing interior hole cutter, thereby reduces manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a boring machine clamping bar provided by the present invention;

fig. 2 is a schematic structural view of a second embodiment of a boring machine clamping bar provided by the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an enlarged schematic view of a portion B shown in fig. 2.

Reference numbers in the figures: 1. the cutter arbor, 2, blade, 3, round hole, 4, installation component, 41, mounting groove, 42, installation pole, 5, joint subassembly, 51, fixed slot, 52, L shape pole, 53, joint groove, 54, down tube, 6, fixed subassembly, 61, fixed plate, 62, convex groove, 63, convex block, 64, first spring, 65, sliding tray, 66, down tube, 7, pulling subassembly, 71, pulling pole, 72, pulling dish, 73, spacing dish, 74, second spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

First embodiment

Please refer to fig. 1, wherein fig. 1 is a schematic structural diagram of a tool clamping bar of an inner hole drilling machine according to a first embodiment of the present invention. An inner bore machine clamp arbor comprising: the cutter arbor 1, the one end of cutter arbor 1 is provided with blade 2, round hole 3 has been seted up on blade 2, round hole 3 is located the one end of blade 2.

Firstly, the method comprises the following steps: characteristics of the work

(1) The cutter bar 1 and the blade 2 are made of YL113 aluminum alloy;

(2) the size of the workpiece needing finish turning is phi 40H8 and S phi 100 +/-0.04 inner hole ball cavities after die assembly, and the workpiece needs to be inspected after being processed;

(3) the machining allowance is 0.8 mm to 1.2 mm of the inner surface (radius size);

II, secondly: features and difficulties of turning work

(1) Because the fine machining is carried out after the die assembly, the chip breaking condition is better when the material is subjected to fine turning, the process condition meets the cutting of an inner hole phi 40H8, a hole phi 40H8 is also arranged perpendicular to the phi 40H8 through hole, and the chip removal condition is better due to the rotating centrifugal force of a workpiece during turning.

(2) The machining of the S phi 100 +/-0.04 inner hole ball cavity has certain difficulty, a numerical control machine tool is selected for turning, a four-jaw manual chuck is adopted on the numerical control machine tool for machining, the precision requirement of a machined workpiece can be met, but the common inner hole tool cannot be used for turning, a tool for turning the S phi 100 +/-0.04 inner hole ball cavity is a difficult point, an inner hole mechanical clamping tool bar in an inner cooling mode is selected as a main tool bar, reasonable blades and cutting fluid are selected for different materials of the workpiece, and then measurement is carried out in the machining process and after machining.

Thirdly, the method comprises the following steps: design of inner hole cutter bar of special machine clamp

(1) According to the manufacturing method of the common inner bore turning tool cutter bar, the maximum diameter of the cross section of the cutter bar is 39, the shortest axial extension of the inner bore cutter bar needs 93 millimeters, and therefore the rigidity of the cutter bar is poor and the turning requirement cannot be met.

(2) The inner hole cutter bar has good comprehensive mechanical property, and the rigidity of the inner hole cutter bar is mainly improved due to the characteristics of the inner hole cutter bar, and the main method for improving the rigidity comprises the following steps: the cross section area of the cutter rod is increased, the cutter rod is made of good materials (the whole hard alloy material is best, but the conditions are not met), and the cutter rod is subjected to proper heat treatment.

(3) According to the characteristics of the material and the shape of a workpiece, cutting fluid needs to be added during cutting, and in order to improve the using effect of the cutting fluid, an inner-cooling mode needs to be selected for the cutter bar of the inner-hole turning tool.

Fourthly, the method comprises the following steps: manufacturing method of special inner hole machine cutter clamping bar

(1) According to the existing conditions at that time, the material of the inner hole cutter bar is No. 45 steel forging material, because the material is rich and has good comprehensive mechanical properties, and the material size is phi 52 multiplied by 272.

(2) Unit existing production conditions: common lathes, numerically controlled lathes, vertical milling machines, radial drilling machines, tool grinders, hand grinders, angle grinders, and heat treatment conditions.

(3) The center hole (only one end is drilled) is drilled by using a common lathe, the outer circle is roughly turned to phi 46 mm by one clamp and one top, the workpiece is turned around, the end face of the workpiece is turned to 266 mm, the outer circle phi 46 mm is turned, (the center hole is not drilled), the outer circle phi 46 mm is milled, after scribing, a vertical milling machine is used for roughly milling 26 x 39 square, the length is 145 mm to the size, a radial drilling machine is used for drilling the end phi 8.5 x 90 mm of the center hole, and the phi 3.3 hole is drilled according to the scribing, is eccentric to phi 8.5 by 2 mm and is communicated with the phi 8.5.

(4) For example, direct cold or hot bending can cause certain deformation to the inner hole and affect the using effect of the subsequent cutting fluid, so a Z1/8 plug is required to be arranged, fine sand heated to remove water is added into phi 3.3 and phi 8.5 inner holes, the outer surface is vibrated and knocked to enable the fine sand to be filled and filled, an M4 screw is arranged, the cutter bar material is heated and bent, the M4 top wire and the Z1/8 plug are detached, the fine sand in the phi 3.3 and phi 8.5 inner holes is cleaned, and the device is subjected to thermal refining (T235).

(5) The method is characterized by taking various sizes into consideration for scribing, using a common lathe, aligning a four-jaw manual chuck, roughly and finely turning phi 40h7 multiplied by 120 to the size, if numerical control machining center equipment exists, processing other parts of a cutter bar on the numerical control machining center equipment, if the numerical control machining center equipment does not exist, processing can be carried out by using a numerical control lathe, the cutter bar is arranged on the working position of a cutter rest of the numerical control lathe, a rotary cutter is arranged on the chuck, the rotary diameter of the rotary cutter can be manually adjusted to phi 37 mm from phi 60 mm, a main shaft is used for rotating (rotating the cutter), the cutter bar arranged on the working position of the cutter rest is gradually adjusted, a blade part is arranged, the cutter bar is arranged on the working position of the cutter rest, the blade part is arranged, the blade part is processed by using a vertical milling machine according to the blade size of phi 8(R4), M3 threads need to be tapped manually, and other parts are trimmed by using a grinding machine, a hand grinder and an angle grinder to meet requirements.

(6) The special inner hole cutter bar is quenched, C42(HRC39-HRC45) is good, a workpiece made of an aluminum alloy material can be subjected to trial turning, the cutter bar is comprehensively checked, and if the workpiece is imperfect, the workpiece can be trimmed (the part for clamping the cutter bar is an important link) to meet the requirements of mechanically clamping the cutter.

Fifthly: selection of blades

1. Selecting a blade for machining YL113 aluminum alloy workpieces;

(1) according to the practical situation that the machining precision (S phi 100 +/-0.04) of a workpiece requires, the circular blade is required to be selected as the blade, and the roundness precision of the blade needs to be high.

(2) YL113 aluminum alloy material performance; the YL113 aluminum alloy is classified according to production processes, is a wrought aluminum alloy, is low in strength and hardness, requires low cutting force, is high in cutting processing difficulty, is prone to generating scraps during cutting, is difficult to obtain good surface quality, has an elongation of more than 20% in an annealing state, is poor in cutting processing performance, and is required to be subjected to quenching and aging heat treatment before a workpiece is machined so as to improve cutting processing performance.

(3) Selecting a machining YL113 aluminum alloy blade material; from the cutting workability of this material, it is required that the blade material is wear-resistant, the cutting edge is sharp and has a large positive rake angle, the surface roughness values of the front and rear surfaces of the cutter are as small as possible (less than ra0.4), and the rake surface is resistant to adhesion, smooth chip removal and the like, and for this reason, medium and fine grain YG type cemented carbide (ISO K10-K20) of coated and uncoated blades cut the blade material of aluminum alloy, and they can ensure both the sharpness of the cutting edge of the cutter and its wear resistance because the work cutting is interrupted cutting in which diamond type blades are not used.

(4) The front angle of the aluminum alloy tool is generally selected to be 20-30 degrees, but according to the characteristics of YL113 aluminum alloy material, the front angle of the tool is selected to be 15-25 degrees, and the front surface is preferably polished.

(5) The back angle of the aluminum alloy tool is generally selected from 8 degrees to 13 degrees, and the back angle is selected from 7 degrees to 10 degrees according to the actual situation of the workpiece, if the back surface is polished better.

(6) Because of the requirement of the dimensional accuracy of the processed S phi 100 +/-0.04, a circular blade is selected, the angles of the main deflection angle and the auxiliary deflection angle are not selected, and the blade inclination angle is also 0 degree.

(7) Considering data in several aspects, looking up samples of certain cutters, selecting a RCGX 0803MO-AL18 blade of a Shantevick Cola full cutter for use, and processing the cutting amount of an YL113 aluminum alloy workpiece (the blade needs to be selected, the roundness of the blade is within +/-0.015 mm); the cutting speed Vc is 100-120M/min, the cutting depth (the amount of cut) ap is 0.06-0.5 MM, and the feed amount (the amount of feed) f is 0.1-0.3 MM/r.

Sixthly, the method comprises the following steps: selection of cutting fluids

1. Selecting cutting fluid for processing YL113 aluminum alloy workpieces; because of YL113 aluminum alloy material

The performance and the cutting processing particularity of the cutting processing require that the cooling liquid used in the cutting processing has good cooling performance, permeability, lubricity and cleaning performance, and the cutting liquid comprises the following components:

(1) the washing oil (kerosene) has good cutting effect, can obtain good dimensional accuracy and surface quality, but has poor cleaning performance and is selected according to actual conditions.

(2) Alcohol has good use effect and outstanding finish machining effect, but the alcohol is safe to use, and the machine tool and the surrounding environment need to be considered.

(3) The semisynthetic coolant, the general emulsion without nitrite and the emulsified oil can obviously improve the quality of a processed surface, provide good rust protection for a processed workpiece, have the characteristics of strong antibacterial capability, easy maintenance, long service life and the like, and are also suitable for processing ferrous metals.

(4) The aluminum alloy machining cutting fluid has good surface machining effect, can prolong the service life of a cutter even under the machining condition with higher difficulty, has good lubricating property and lower foam, can be used for mixed metal products, has excellent anti-corrosion property and extremely long service life, and keeps the cleanness of a machine tool and a workpiece, so the aluminum alloy machining cutting fluid has better economy and is the cutting fluid (which is selected to be used) for machining the aluminum alloy.

The cutter bar 1 is cylindrical.

The blade 2 is arc-shaped, and a groove is formed at the joint of the blade 2 and the cutter bar 1.

through the special processing procedure, the strength of the inner hole cutter is enhanced, the service life of the inner hole cutter is prolonged, and the special shape of the inner hole cutter can reduce the materials required when the inner hole cutter is produced, so that the manufacturing cost is reduced.

Second embodiment

Referring to fig. 2, 3 and 4, a second embodiment of the present application provides another boring machine clamping bar based on the boring machine clamping bar provided in the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference of the inner hole machine tool clamping bar provided by the second embodiment of the present application lies in that the inner hole machine tool clamping bar further includes an installation component 4, the installation component 4 is fixed inside the tool bar 1, the installation component 4 includes an installation groove 41, and an installation rod 42 is slidably connected inside the installation groove 41; the clamping assembly 5 is fixed inside the mounting rod 42, the clamping assembly 5 comprises a fixing groove 51, an L-shaped rod 52 is connected inside the fixing groove 51 in a sliding mode, a clamping groove 53 is formed in the mounting rod 42, and one end of the L-shaped rod 52 is fixedly connected with an inclined rod 54; the fixing assembly 6 is fixed inside the mounting groove 41, the fixing assembly 6 comprises a fixing plate 61, a convex groove 62 is formed inside the fixing plate 61, two convex blocks 63 are slidably connected inside the convex groove 62, a first spring 64 is fixedly connected between the two convex blocks 63, a sliding groove 65 is formed in the fixing plate 61, and an inclined rod 66 is fixedly connected to each convex block 63; pulling assembly 7, pulling assembly 7 is fixed in the inside of mounting groove 41, pulling assembly 7 is including pulling pole 71, the one end fixedly connected with pulling disk 72 of pulling pole 71 to the fixed surface of pulling pole 71 is connected with spacing dish 73, the surface of pulling pole 71 has cup jointed second spring 74.

The mounting groove 41 is opened in the interior of the cutter bar 1, the mounting rod 42 is fixed on the blade 2, and the second spring 74 is located on the right side of the limiting disc 73.

The mounting rod 42 is for fixing the blade 2, and the second spring 74 is for restoring the pulling rod 71 pulled to the right.

The fixed slot 51 is opened in the installation rod 42, one end of the L-shaped rod 52 is matched with the clamping slot 53, the inclined rod 54 is slidably connected with the pull disc 72, and the pull rod 71 is slidably connected with the installation slot 41.

The pulling rod 71 can slide left and right inside the knife bar 1, and the pulling disk 72 moves right to make the two diagonal rods 54 approach each other.

The fixing plate 61 is fixed inside the mounting groove 41, the convex block 63 is fixedly connected with one end of the inclined rod 54, the inclined rod 66 is positioned inside the sliding groove 65, and the inclined rod 66 is slidably connected with the inner surface of the sliding groove 65.

The up and down movement of the convex block 63 drives the tilting rod 54 to move up and down synchronously.

The working principle is as follows:

when the blade 2 needs to be replaced, the pulling rod 71 is pulled rightwards to drive the pulling disk 72 to move rightwards, the pulling disk 72 is moved rightwards to drive the two inclined rods 54 to approach each other, the two inclined rods 54 approach each other to drive the two convex blocks 63 to approach each other, the two convex blocks 63 approach each other to drive the two L-shaped rods 52 to approach each other, the two L-shaped rods 52 approach each other to enable one end of the L-shaped rod 52 to be no longer clamped with the clamping groove 53, so that the blade 2 can be taken down by pulling the blade 2 leftwards, then a new blade 2 is inserted into the mounting groove 41, the pulling rod 71 is loosened, the limiting disk 73 is pushed leftwards by the second spring 74, the limiting disk 73 is moved leftwards by the left movement of the limiting disk 73 to drive the pulling rod 71 to move leftwards, the pulling rod 71 is moved leftwards to drive the pulling disk 72 to move leftwards by the left, then the two convex blocks 63 are pushed by the first spring 64 to enable the two convex blocks 63 to move away from each other, two convex blocks 63 keep away from each other and can drive two L shape poles 52 and keep away from each other, and two L shape poles 52 keep away from each other and can make L shape pole 52 and joint groove 53 joint to fix new blade 2.

Has the advantages that:

through pulling pole 71, make two L shape poles 52 be close to each other to make L shape pole 52 no longer the joint with joint groove 53, pulling blade 2 alright can be changed blade 2 left, thereby blade 2 can't be changed when avoiding blade 2 to damage, scrap when causing blade 2 and cutter arbor 1.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides an inner hole machine clamp pole which characterized in that includes: a cutter bar, wherein one end of the cutter bar is provided with a cutter blade, the cutter blade is provided with a round hole, and the round hole is positioned at one end of the cutter blade; the blade is arc-shaped, and a groove is formed at the joint of the blade and the cutter rod;

the mounting assembly is fixed inside the cutter bar and comprises a mounting groove, and a mounting rod is slidably connected inside the mounting groove; the clamping assembly is fixed inside the mounting rod and comprises a fixing groove, an L-shaped rod is connected inside the fixing groove in a sliding mode, a clamping groove is formed in the mounting rod, and one end of the L-shaped rod is fixedly connected with an inclined rod; the fixing assembly is fixed inside the mounting groove and comprises a fixing plate, a convex groove is formed in the fixing plate, two convex blocks are connected inside the convex groove in a sliding mode, a first spring is fixedly connected between the two convex blocks, a sliding groove is formed in the fixing plate, and an inclined rod is fixedly connected to the convex blocks; the pulling assembly is fixed in the mounting groove, the pulling assembly comprises a pulling rod, one end of the pulling rod is fixedly connected with a pulling disk, the surface of the pulling rod is fixedly connected with a limiting disk, and a second spring is sleeved on the surface of the pulling rod.

2. The bore hole machine clamp bar of claim 1, wherein said bar is cylindrical in shape.

3. The inner bore machine clamp tool bar of claim 1, wherein the mounting groove is formed in the interior of the tool bar, the mounting bar is fixed to the blade, and the second spring is located on the right side of the limiting disc.

4. The inner hole machine clamping cutter bar of claim 1, wherein the fixing groove is formed in the mounting bar, one end of the L-shaped bar is matched with the clamping groove, the inclined bar is connected with the pulling disc in a sliding mode, and the pulling bar is connected with the mounting groove in a sliding mode.

5. The inner bore machine clamp tool bar of claim 1, wherein the fixing plate is fixed inside the mounting groove, the convex block is fixedly connected with one end of the inclined rod, the inclined rod is located inside the sliding groove, and the inclined rod is slidably connected with the inner surface of the sliding groove.