CN218926280U

CN218926280U - Counter-scraping knife for counter bore

Info

Publication number: CN218926280U
Application number: CN202223326538.0U
Authority: CN
Inventors: 钱桂风; 张海; 鲍江波; 陈继轩
Original assignee: Jiangsu Desu Intelligent Machinery Co ltd
Current assignee: Jiangsu Desu Intelligent Machinery Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-28
Anticipated expiration: 2032-12-12

Abstract

The utility model belongs to the technical field of cutters, and particularly relates to a counter-bore counter-scraper which comprises a cutter handle, a cutter bar and a cutter head which are sequentially connected, wherein the cutter head and the cutter handle are eccentrically arranged, the length L1 of the cutter head along the X-axis direction is greater than the length S1 of the cutter bar, the width L2 of the cutter head along the Y-axis direction is less than the width S2 of the cutter bar, and the upper end of the cutter head is provided with a chip removal groove extending along the X-axis direction; according to the utility model, the cutter head and the cutter handle are eccentrically arranged, so that the cutter head can directly penetrate through the small hole to process the counter bore, the disassembly procedure is avoided, the working efficiency is improved, the arc chip removal groove at the upper end of the cutter head is utilized for chip removal, the cutter tipping can be avoided, and the processing precision of the counter bore is improved.

Description

Counter-scraping knife for counter bore

Technical Field

The utility model belongs to the technical field of cutters for machining centers, and particularly relates to a counter-bore counter-scraper.

Background

The reverse counter bore usually appears when workpieces such as revolving stage box, C axle, A axle, revolving stage mesa for the high-end digit control machine tool are processed, because the diameter of reverse counter bore is greater than the diameter of hole, the cutter can not directly stretch into the downthehole processing counter bore, consequently, usually need pull down the tool bit from the handle of a knife, pass the handle of a knife that has demolished the tool bit from the hole, then adorn the tool bit on the handle of a knife again, upwards remove the scraper and realize the processing of reverse counter bore when rotating the scraper, but this kind of mode needs to dismantle the tool bit in the course of working, operating efficiency is lower, every hole of traditional processing manual mode is more than 5 minutes.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the problem that in the prior art, when a reverse counter bore is machined, a cutter head needs to be disassembled, and the operation efficiency is low, the counter bore reverse scraper is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a counter bore anti-scraper, including handle of a knife, cutter arbor and the tool bit that connects gradually, tool bit and handle of a knife eccentric settings, along X axis direction tool bit length L1 be greater than cutter arbor length S1, tool bit and cutter arbor one end parallel and level in X axis direction promptly, the other end tool bit protrusion realizes counter bore processing in the cutter arbor, along Y axis direction tool bit width L2 be less than cutter arbor width S2, the cutter arbor protrusion is in the cutter bit in Y axis direction promptly, thereby guarantee the structural strength of cutter arbor, L1 and S2 are all less than the diameter that has made cutter arbor and tool bit all can pass from the aperture, and the chip groove that extends along X axis direction has been seted up to the tool bit upper end, chip groove height H is less than tool bit height H, the cell wall in chip groove extends to the tool bit top surface, wherein one end in X axis direction runs through the tool bit side, the other end is located the middle part of tool bit, compare chip groove both ends all run through the tool bit side, one end runs through the structural strength of having guaranteed the tool bit.

When the cutter is used, the position of the reverse scraper is firstly adjusted, the center of the cutter head is moved to the axis of the punched hole, the cutter head is moved downwards to penetrate through the hole to the bottom of the hole, then the center of the cutter handle is moved to the axis of the hole, and the reverse scraper is driven to rotate clockwise to process the counter bore; after the machining is finished, the center of the tool bit is moved to the axis of the small hole, and then the reverse scraper is moved upwards to move out of the workpiece.

According to the technical scheme, the cutter head and the cutter handle are eccentrically arranged, so that the cutter head can directly penetrate through the small hole to process the counter bore, the disassembly procedure is avoided, the working efficiency is improved, the arc-shaped chip removal groove at the upper end of the cutter head is utilized for removing chips, the cutter tipping can be avoided, and the processing precision of the counter bore is improved.

Further, a blade is arranged at the connection part of the tool bit and the tool bar, the blade is inclined from top to bottom in a direction away from the tool bar and used for processing chamfer angles, the blade is positioned above the chip groove, and the cross section area of the blade is gradually reduced along the anticlockwise direction so as to form a cutting edge.

Further, the arc notch is formed in the lower end of the cutter bar, the bottom end of the arc notch is opposite to the side face of the cutter head, transition between the bottom end of the arc notch and the side face of the cutter head is gentle, and the connection strength of the cutter bar and the cutter head is improved on the premise that the strength of the cutter bar is guaranteed.

Further, the cutter bar is flat and is approximately oval, the cutter bar width S2 is greater than the cutter bar length S1, and S2 is smaller than the diameter of the cutter bar, so that the flat cutter bar not only ensures that the cutter bar cannot touch the hole wall when entering and exiting the small hole, but also ensures the strength of the cutter bar.

Further, the cross section of the cutter handle comprises an arc section and a straight line section, so that the connection strength of the cutter handle and a cutter holder on a machine tool is improved.

The utility model has the beneficial effects that: according to the utility model, the cutter head and the cutter handle are eccentrically arranged, so that the cutter head can directly penetrate through the small hole to process the counter bore, the disassembly procedure is avoided, the working efficiency is improved, and the processing time of each hole is 6 seconds; and the arc chip removal groove at the upper end of the cutter head is utilized for chip removal, so that the cutter can be prevented from tipping, and the machining precision of the counter bore is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a three-dimensional view of the present utility model;

FIG. 2 is a front view of the present utility model;

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

FIG. 4 is a bottom view of the present utility model;

FIG. 5 is a schematic illustration of a counterbore.

In the figure:

1. a knife handle; 101. an arc section; 102. a straight line segment; 2. a cutter bar; 201. a notch; 3. a cutter head; 301. a chip removal groove; 4. a blade; 5. a small hole; 6. countersink; 7. chamfering.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

Embodiment one:

as shown in fig. 1-5, the counter-bore scraper comprises a cutter handle 1, a cutter bar 2 and a cutter head 3 which are sequentially connected, wherein the cutter head 3 and the cutter bar 2 are eccentrically arranged with the cutter handle 1, and the cutter head 3 and the cutter bar 2 can directly penetrate through a small hole 5 so as to realize the processing of a counter bore 6, and the disassembly procedure is avoided.

The cross section of the tool shank 1 comprises an arc-shaped section 101 and a straight-line section 102, which is equivalent to forming an edge after a tool is cut off straight on a cylinder, so that the connection strength of the tool shank 1 and a tool apron on a machine tool is improved.

The cutter bar 2 is flat and is approximately oval, the width S2 of the cutter bar 2 (corresponding to the long diameter of the cutter bar 2) is larger than the length S1 of the cutter bar 2 (corresponding to the short diameter of the cutter bar 2), the width S2 of the cutter bar 2 is smaller than the diameter of the cutter bar 1, and the flat cutter bar 2 not only ensures that the cutter bar 2 can not touch the wall of the small hole 5 when entering and exiting the small hole 5, but also ensures the strength of the cutter bar 2.

The cutter head 3 is approximately a semi-cylinder, the length L1 (corresponding to the diameter of the cutter head 3) of the cutter head 3 along the X-axis direction is larger than the length S1 (corresponding to the short diameter of the cutter head 2) of the cutter head 2, namely, the cutter head 3 is flush with one end of the cutter head 2 along the X-axis direction, the cutter head 3 at the other end protrudes out of the cutter head 2 to realize the processing of the counter bore 6, the width L2 (corresponding to the radius of the cutter head 3) of the cutter head 3 along the Y-axis direction is smaller than the width S2 (corresponding to the long diameter of the cutter head 2), namely, the cutter head 2 protrudes out of the cutter head 3 along the Y-axis direction, so that the structural strength of the cutter head 2 is ensured; the cutter head 3 length L1 and the cutter arbor 2 width S2 are smaller than the diameter of the punched small hole 5, the cutter head 3 and the cutter arbor 2 can penetrate through the small hole 5, an arc chip groove 301 extending along the X-axis direction is formed in the upper end of the cutter head 3, the groove height H of the chip groove 301 is smaller than the height H of the cutter head 3, the groove wall of the chip groove 301 extends to the top surface of the cutter head 3, one end of the chip groove 301 penetrates through the side surface of the cutter head 3 along the X-axis direction, the other end of the chip groove 301 is located in the middle of the cutter head 3, compared with the two ends of the chip groove 301, the two ends of the chip groove penetrate through the side surface of the cutter head 3, and one end of the chip groove penetrates through the strength of the cutter head 3.

The connection part of the tool bit 3 and the tool bar 2 is provided with a blade 4, the blade 4 is inclined from top to bottom in a direction away from the tool bar 2 and is used for machining a chamfer 7, the blade 4 is positioned above the chip groove 301, and the cross section area of the blade 4 is gradually reduced in the anticlockwise direction so as to form a cutting edge.

The arc notch 201 is formed in the lower end of the cutter bar 2, the bottom end of the arc notch 201 is aligned with the side surface of the cutter head 3, transition between the bottom end of the arc notch and the side surface of the cutter head is gentle, and the connection strength of the cutter bar 2 and the cutter head 3 is improved on the premise that the strength of the cutter bar 2 is guaranteed.

Working principle:

when the tool is used, firstly, the position of the reverse scraper is adjusted, the center of the tool bit 3 is moved to the axis of the small hole 5, the tool bit 3 is moved downwards to penetrate through the small hole 5 to the bottom of the small hole 5, then, the center of the tool shank 1 is moved to the axis of the small hole 5, the reverse scraper is driven to rotate clockwise to process the counter bore 6 and the chamfer 7, and after the processing is finished, the center of the tool bit 3 is moved to the axis of the small hole 5, and then, the reverse scraper is moved upwards to move out of a workpiece; the traditional machining mode needs more than 5 minutes for each hole, through the reverse scraper in the application, the main shaft revolution is set to 2000RM/MIN, the feeding rate F100 is set, the feeding Fn=0.05 is set for each tooth, the machining time of the counter bore 6 and the chamfer 7 is 6 seconds, and the working efficiency is improved.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. The counter bore anti-scraper is characterized in that: including handle of a knife (1), cutter arbor (2) and tool bit (3) that connect gradually, tool bit (3) and handle of a knife (1) eccentric setting, along X axis direction tool bit (3) length L1 is greater than cutter arbor (2) length S1, along Y axis direction tool bit (3) width L2 is less than cutter arbor (2) width S2, just arc chip groove (301) that extend along X axis direction have been seted up to tool bit (3) upper end.

2. A counter bore counter scraper according to claim 1, wherein: the tool bit (3) is provided with a blade (4) for processing a chamfer (7) at the connection part of the tool bit (3) and the tool bar (2), and the blade (4) is inclined from top to bottom in a direction away from the tool bar (2).

3. A counter bore counter scraper according to claim 1, wherein: an arc notch (201) is formed in the lower end of the cutter bar (2), and the bottom end of the arc notch (201) is aligned with the side face of the cutter head (3).

4. A counter bore counter scraper according to claim 1, wherein: the cutter bar (2) is flat.

5. A counter bore counter scraper according to claim 1, wherein: the cross section of the knife handle (1) comprises an arc-shaped section (101) and a straight-line section (102).