CN210231622U

CN210231622U - Be applicable to forging mould BTA cutter

Info

Publication number: CN210231622U
Application number: CN201921024056.5U
Authority: CN
Inventors: Jiegen Cao; 曹结根; Bingzhe Li; 黎昺哲; Changwen Huang; 黄昌文
Original assignee: Anhui Anhuang Machinery Co ltd
Current assignee: Anhui Anhuang Machinery Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-04-03
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to the field of machining, in particular to a deep hole machining tool suitable for a forging die, which comprises a tool handle and an elongated composite tool bit, wherein the tool handle comprises a mandrel and an outer ring, the outer ring is sleeved outside the mandrel, and the mandrel is rotationally connected with the outer ring; air inlet channels are correspondingly arranged on the inner wall of the outer ring and the outer wall of the mandrel; a plurality of through holes are formed in the positions, corresponding to the air inlet channels, of the mandrel, a central air hole is formed in the central shaft of the lengthened composite cutter head, and the upper end of the central air hole is communicated with the through holes in the side wall of the mandrel. When the tool is used, air is blown out from the tool bit, so that the tool is cooled and internal scrap iron is blown out during deep hole machining, the machining size precision of a shaft hole of the die is guaranteed, the cost of the tool can be obviously saved, the machining efficiency is improved, the machining center directly cuts the size requirement of a pattern finished product of the die, the electrode electric spark forming machining is not needed, and the influence of electric spark discharging decarburization is avoided.

Description

Be applicable to forging mould BTA cutter

Technical Field

The utility model relates to the field of machining, specifically a be applicable to forging mould BTA cutter.

Background

The automobile steering knuckle is an important safety part in an automobile steering system, and directly influences the driving stability, safety and steering sensitivity of an automobile. In order to meet the requirements of high strength and high safety of the steering knuckle, the steering knuckle in commercial vehicles, SUVs and high-end passenger vehicles is widely made of alloy steel forgings.

The key technology and difficulty of steering knuckle forging are the design of a forging die and the processing of the die, and the conventional steering knuckle forging die processing method is divided into two methods.

Processing a new die: rough machining of blank → heat treatment → fine machining of machining center → electrical spark forming of graphite electrode → clamping and repairing → inspection → warehousing;

repairing the old mold: removing cracks by a machine tool → manually welding and repairing → machining center finish machining → graphite electrode electric spark forming → clamping and repairing → inspection → warehousing.

There are problems in traditional mould processing: (1) the steering knuckle belongs to a fork type part, a forging die cavity is complex, a steering knuckle shaft hole cavity is a step deep hole, a pull arm and a damping arm cavity are slender and irregular curved surfaces, a traditional machining process is that a machining center drills and then mills, the deep hole and a small cavity cannot be directly machined and formed, and the dimensional accuracy is poor; the deep hole and the irregular cavity are formed by electric sparks, and the surface quality and the precision of the die are poor.

(2) The forged steering knuckle die needs to sink for removing cracks for multiple times during repair, then is welded again, and the allowance after welding is uneven, the hardness is different, so that the consumption of a machining tool is high, the machining cost is high, and the production efficiency is low. In particular, the processing technology of the hole-shaped cavity of the steering knuckle shaft is complex: after welding, firstly, the hard alloy cutter is used, the machining center is operated in a manual mode to drill high points, and then the vertical milling cutter is used for numerical control milling. Repeating the processing in the same way until the whole shaft hole is completely processed. Finally, the product can be qualified only by electric spark forming and necessary manual clamping. The method has the following disadvantages: firstly, the cutter has large loss and high cost, a brand new hard alloy cutter and a brand new straight end mill are basically scrapped once, and if the hard spot of welding slag is encountered, the cutter is directly scrapped; secondly, the processing time is long, the labor cost is high, an operator must manually operate the whole process in the whole process, and the rough cutting of the whole shaft hole is completed for more than four hours.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applicable to and forge mould BTA cutter to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a deep hole machining cutter suitable for a forging die comprises a cutter handle and a lengthened composite cutter head, wherein the cutter handle comprises a mandrel and an outer ring, the outer ring is sleeved on the outer side of the mandrel and is rotatably connected with the mandrel, and the outer ring rotates around the outer side of the mandrel; air inlet channels are correspondingly arranged on the inner wall of the outer ring and the outer wall of the mandrel, and the air inlet channels on the two sides form channels; a plurality of through holes are formed in the positions, corresponding to the air inlet channels, of the mandrel, a central air hole is formed in the central shaft of the lengthened composite cutter head, the upper end of the central air hole is communicated with the through holes in the side wall of the mandrel, air in the air inlet channels enters the lengthened composite cutter head, the air is blown out from the tail end of the lengthened composite cutter head, and the air is blown into the die deep hole in the machining process, so that the effects of cooling and blowing out scrap iron are achieved.

Further: and an air nozzle communicated with the internal air inlet channel is arranged on the outer side of the outer ring.

Further: the air tap is communicated with an external air pipe, the other end of the external air pipe is communicated with an air source of the machine tool, and air is introduced into the air inlet channel.

Further: and the inner sides of the upper end and the lower end of the outer ring are respectively provided with a sealing ring which is sleeved on the outer side of the mandrel, so that the mandrel and the outer ring are sealed, and the internal gas leakage is avoided.

Further: the bolt is installed through the pin in the outside of outer lane, and the other one end screw thread fixed mounting of bolt is on machining center main shaft terminal surface to when guaranteeing that the machining center main shaft drives the handle of a knife rotatory, external trachea is not rotatory along with the handle of a knife.

Further: and the bolt is fixedly connected with an internal thread hole on the end surface of the main shaft of the machining center.

Further: the bolt is connected with an open slot at the end of the bolt through a pin and is fixedly connected on the outer ring through the pin.

Compared with the prior art, the beneficial effects of the utility model are that: when the tool is used, air is blown out from the tool bit, so that the tool is cooled and internal scrap iron is blown out during deep hole machining, the machining size precision of the shaft hole of the die is ensured, the cost of the tool can be remarkably saved, the machining efficiency is improved, the service life of the die is prolonged, and the quality of a forged product is improved; the machining center directly cuts to the requirement of the size of a finished product of a die pattern, electrode electric spark forming machining is not needed, the influence of electric spark discharging decarburization is avoided, and the appearance quality of a forged product and the service life of the die are improved.

Drawings

Fig. 1 is a schematic structural diagram of a deep hole machining tool suitable for a forging die.

Fig. 2 is a schematic diagram of a structure of what is suitable for a deep hole machining tool of a forging die.

In the figure: 1-tool handle, 2-machining center spindle, 3-lengthened composite tool bit, 4-external air pipe, 5-air inlet channel, 6-mandrel, 7-outer ring, 8-sealing ring, 9-pin, 10-air nozzle, 11-bolt, 12-machining center spindle end face and 13-mold deep hole.

Detailed Description

Example 1

Referring to the drawings, in the embodiment of the present invention, a deep hole machining tool suitable for a forging die comprises a tool shank 1 and an elongated composite tool bit 3, wherein the tool shank 1 comprises a mandrel 6 and an outer ring 7, the outer ring 7 is sleeved on the outside of the mandrel 6, the mandrel 6 is rotatably connected with the outer ring 7, and the outer ring 7 rotates around the outside of the mandrel 6; air inlet channels 5 are correspondingly arranged on the inner wall of the outer ring 7 and the outer wall of the mandrel 6, the air inlet channels 5 on the two sides form a channel, an air tap 10 communicated with the inner air inlet channel 5 is arranged on the outer side of the outer ring 7, the air tap 10 is communicated with an external air pipe 4, the other end of the external air pipe 4 is communicated with an air source of a machine tool, and air is introduced into the air inlet channels 5; a plurality of through holes are formed in the position, corresponding to the air inlet channel 5, of the mandrel 6, a central air hole is formed in the central shaft of the lengthened composite tool bit 3, the upper end of the central air hole is communicated with the through hole in the side wall of the mandrel 6, so that air in the air inlet channel 5 enters the lengthened composite tool bit 3 and is blown out from the tail end of the lengthened composite tool bit 3, and the air is blown into the die deep hole 13 during machining, so that the effects of cooling and blowing out scrap iron are achieved.

And the inner sides of the upper end and the lower end of the outer ring 7 are respectively provided with a sealing ring 8 which is sleeved on the outer side of the mandrel 6, so that the mandrel 6 and the outer ring 7 are sealed, and the internal gas leakage is avoided.

Example 2

On the basis of the embodiment 1, the bolt 11 is installed on the outer side of the outer ring 7 through the pin 9, the other end of the bolt 11 is fixedly installed on the end surface 12 of the main shaft of the machining center through threads, and the external air pipe 4 is fixed; the bolt 11 is fixedly connected with an internal thread hole of the end face 12 of the main shaft of the machining center, is connected with an open slot at the end of the bolt 11 through the pin 9, and is then fixedly connected to the outer ring 7 through the pin 9, so that the external air pipe 4 does not rotate along with the tool holder 1 when the main shaft 2 of the machining center drives the tool holder 1 to rotate.

When a cutter is installed, a mandrel 6 of a cutter handle 1 is connected with a machining center spindle 2 in a Morse taper connection mode, the cutter handle 1 is driven to rotate through the machining center spindle 2, and then an outer ring 7 is fixedly installed on an end face 12 of the machining center spindle through a pin 9 and a bolt 11; the tool shank 1 is matched and connected with a main shaft 2 of the machining center; when deep hole machining is carried out through the lengthened composite cutter head 3, external compressed air enters a machining die cavity through the central air holes of the cutter handle 1 and the lengthened composite cutter head 3, and the purposes of cooling the cutter and helping chip removal are achieved.

Description of specific implementation procedures:

(1) firstly, placing a knuckle mould on a working table of a machining center, and manually moulding residual scrap iron and welding slag at a deep hole 13 of the mould;

(2) installing the lengthened composite cutter head 3 into the cutter handle 1 and locking;

(3) mounting a tool shank 1 on a main shaft 2 of a machining center; the bolt 11 and the nut are connected and fixed with an internal threaded hole of the end surface 12 of the main shaft of the machining center; and rotating the outer ring 7 to enable the position of the pin 9 to be consistent with the center of an opening groove at the head part of the bolt 11 of the end surface 12 of the main shaft of the machining center and to be clamped and connected.

(4) Pressing down a cutter mounting button of a machining center to mount a cutter, and then rotating the lengthened composite cutter head 3 by hand to ensure that the cutter bar can rotate;

(5) connecting the external air pipe 4 with the air tap 10, opening an air source to test air pressure, and ensuring that enough pressure can discharge the scrap iron;

(6) and (3) setting parameters of a machining program, setting the rotating speed of the machine tool to be 500r/min, feeding the machine tool to be 450mm/min, blowing compressed air through the lengthened composite cutter head 3 to cool the lengthened composite cutter head, and simultaneously discharging air flow to a machining area through a central air hole of the lengthened composite cutter head 3. Adjusting the gas pressure to realize smooth discharge of the processing scrap iron;

(7) calling a machining program of the corresponding die shaft hole from a machine tool control panel, and starting on-line automatic machining in a DNC mode.

(8) The machining center directly cuts the pattern of the die to meet the size requirement of the finished product of the die without electrode electric spark forming machining. The die has the advantages of smooth surface, high size precision, no influence of electric spark discharging decarburization, and improved appearance quality of forged products and prolonged service life of the die.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The deep hole machining cutter suitable for the forging die comprises a cutter handle (1) and a lengthened composite cutter head (3), and is characterized in that the cutter handle (1) comprises a mandrel (6) and an outer ring (7), the outer ring (7) is sleeved on the outer side of the mandrel (6), the mandrel (6) is rotatably connected with the outer ring (7), and the outer ring (7) rotates around the outer side of the mandrel (6); air inlet channels (5) are correspondingly arranged on the inner wall of the outer ring (7) and the outer wall of the mandrel (6), the air inlet channels (5) on the two sides form a channel, and an air nozzle (10) communicated with the inner air inlet channel (5) is arranged on the outer side of the outer ring (7); a plurality of through holes are formed in the positions, corresponding to the air inlet channels (5), of the mandrel (6), a central air hole is formed in the central shaft of the lengthened composite cutter head (3), and the upper end of the central air hole is communicated with the through holes in the side wall of the mandrel (6); and a bolt (11) is installed on the outer side of the outer ring (7) through a pin (9), and the other end of the bolt (11) is fixedly installed on the end face (12) of the main shaft of the machining center through threads.

2. The deep hole machining tool for the forging die as claimed in claim 1, wherein: the air tap (10) is communicated with an external air pipe (4) and is used for introducing air into the air inlet channel (5).

3. A deep hole machining tool suitable for a forging die according to claim 1 or 2, wherein: and sealing rings (8) sleeved on the outer side of the mandrel (6) are arranged on the inner sides of the upper end and the lower end of the outer ring (7).

4. The deep hole machining tool for the forging die as claimed in claim 1, wherein: and the bolt (11) is fixedly connected with an internal threaded hole of the end surface (12) of the main shaft of the machining center.

5. The deep hole machining tool for the forging die as claimed in claim 4, wherein: the bolt is connected with an open slot at the end of the bolt (11) through a pin (9) and is fixedly connected to the outer ring (7) through the pin (9).