DE102018131538A1 - Tool for performing a deburring process, deburring process and the component formed with it, as well as a gear cutting machine - Google Patents

Abstract

The invention relates to a tool (1) for carrying out a deburring process, in which a primary burr (12) is removed from a toothing (10) of a component (100) after tooth milling, comprising a drive shaft (2) and at least one on the Drive shaft (2) arranged chamfer milling cutter (3a, 3b), at least one brushing tool (3a, 3b) being arranged on the drive shaft (2). The invention further relates to a deburring method, components (100) produced therewith and a gear cutting machine.

Description

The invention relates to a tool for carrying out a deburring method, in which a primary burr is removed from a toothing of a component after gear milling, comprising a drive shaft and at least one chamfering mill arranged on the drive shaft. The invention further relates to a deburring method, in which a primary burr is removed from a toothing of a component after gear milling of the component, in that each end face of the toothing, which comprises a number of teeth with tooth flanks, by means of at least one chamfering cutter with the formation of a chamfer between the respective end face and each tooth flank is machined. The invention further relates to components which are treated in accordance with this deburring method and to a gear cutting machine.
Such a deburring process is already known under the term “chamfer cut process”, in which so-called “chamfer cut cutters” are used to remove burrs on milled toothings.
So the reveals DE 10 2013 015 240 A1 a device and a method for chamfering a workpiece after such a gear milling process, wherein the burrs formed in the region of the end faces of the teeth are removed. Devices for gear milling are referred to as gear milling machines, such machines already having such devices for chamfering being carried out comprehensively.

However, it has been shown that when deburring the toothing while removing the primary burrs formed during gear milling, a new secondary burr is formed in the tooth flanks, which has a disruptive effect on the properties of the toothing. The secondary burrs can be removed in a subsequent grinding or honing process, but this increases the manufacturing time and thus increases the manufacturing costs for a component with milled teeth.

In particular to reduce noise emissions, a honing process is increasingly being used instead of grinding. This is very sensitive to the characteristics of the secondary ridges. The honing stones have to be sharpened very often or completely replaced. This further increases the manufacturing costs.

In particular, cost-effective finish milling of toothed components is also increasingly desired, which means that after the gear milling, the component should be in final quality in a gear milling machine and no further machine should be subjected to post-processing or further processing.

It is therefore the task of providing a tool for a deburring process, a suitable deburring process and a gear milling machine with which a geared component can be obtained in final quality. Furthermore, toothed components are said to be inexpensive to manufacture.

The object is achieved for the tool for carrying out a deburring process, in which a primary burr is removed from a toothing of a component after gear milling, comprising a drive shaft and at least one chamfer milling cutter arranged on the drive shaft, in that at least one further is provided on the drive shaft Brush tool is arranged.

Such an integration of the brushing tool into the tool comprising the chamfering cutter leads to a brushing of the formed chamfer directly after the chamfering and a removal of the secondary burr formed during the chamfering, without the need for time-consuming further processing steps or processing machines. This brushing, which is parallel to the machining time, reduces the machining time and manufacturing costs for toothed components. The costs for the tool according to the invention are only insignificantly higher due to the integration of the brushing tool.

Several chamfering cutters can be arranged adjacent to one another on the drive shaft. A first chamfering cutter can be used for deburring a first end face of the toothing and a second chamfering cutter for deburring a second end face of the toothing.

When viewed in a direction perpendicular to an axis of rotation of the drive shaft, a first brushing tool is preferably arranged adjacent to the at least one chamfering cutter. Furthermore, a second brushing tool is preferably arranged in the direction perpendicular to the axis of rotation of the drive shaft, opposite the first brushing tool and adjacent to the at least one chamfering cutter. A brushing tool can also be arranged between two chamfering cutters.

In a further preferred embodiment of the tool, in addition to the at least one chamfering cutter and the at least one brushing tool, milling tools for performing gear milling are arranged on the drive axis. Gear milling, removal of the primary burr and removal of the secondary burr by brushing can take place here during the machining process.

The task is for the deburring process, which involves removing a primary burr A toothing of a component takes place after a tooth milling of the component, in that each end face of the toothing, which comprises a number of teeth with tooth flanks, is machined by means of at least one chamfer milling cutter with the formation of a chamfer between the respective end face and each tooth flank, whereby between the respective tooth flank and the chamfer forms a secondary burr, solved in that the secondary burr, using the tool according to the invention, is removed in one operation by a brushing immediately following the removal of the primary burr by means of the at least one brushing tool.

The tool is rotated about the axis of rotation of the drive shaft during the removal of the primary burr and the secondary burr, and the workpiece is also rotated about its axis of rotation. In this way, the chamfering cutter and the brushing tool come into contact with the individual teeth and tooth flanks of the toothing. The drive shaft of the tool can be rotated in two different directions when machining the two end faces of the toothing. Furthermore, the drive shaft is preferably mounted displaceably in the direction of its axis of rotation, so that a feed movement can take place.

• - eine erste Einheit zur Herstellung einer Verzahnung an einem Bauteil mittels Verzahnungsfräsens, und
• - eine zweite Einheit zum Entfernen eines Primärgrats an der Verzahnung des Bauteils nach dem Verzahnungsfräsen, dadurch gelöst, dass die zweite Einheit ein erfindungsgemäßes Werkzeug zur Entfernung eines Sekundärgrats umfasst, der während des Entfernens des Primärgrats gebildet wurde.

The task finally becomes comprehensive for a gear cutting machine

• - A first unit for producing a toothing on a component by means of gear milling, and
• a second unit for removing a primary burr on the toothing of the component after the gear milling, solved in that the second unit comprises a tool according to the invention for removing a secondary burr, which was formed during the removal of the primary burr.

It is particularly preferred if, in addition to the at least one chamfering cutter and the at least one brushing tool, at least one milling tool is arranged on the drive shaft of the tool for carrying out the gear milling. The tool according to the invention combines parts of the first unit and parts of the second unit of the gear cutting machine. This enables working parallel to the machining and chamfering process, shortens the time
Processing time significant and enables finish milling using the gear cutting machine.

The use of a gear cutting machine according to the invention for carrying out the deburring method according to the invention has proven itself.

A component with a toothing, produced by the deburring process according to the invention, can be produced quickly and, above all, inexpensively. The component is preferably an externally toothed component, in particular a gearwheel.

• 1 einen Ausschnitt aus einer Vorrichtung zum Entgraten eines außenverzahnten Bauteils mittels zwei Anfasfräsern nach dem Stand der Technik;
• 2 einen vergrößerten Ausschnitt des Bauteils aus 1 im Bereich der Verzahnung;
• 3 einen Schnitt durch die Verzahnung gemäß 2 im Bereich der Fase;
• 4 einen Teil eines ersten Werkzeugs umfassend zwei Anfasfräser und ein Bürstwerkzeug;
• 5 einen Teil eines zweiten Werkzeugs umfassend zwei Anfasfräser und zwei Bürstwerkzeuge; und
• 6 einen Teil eines dritten Werkzeugs umfassend Fräswerkzeuge, zwei Anfasfräser und ein Bürstwerkzeug.

The 1 to 6 are intended to illustrate the invention by way of example. So shows:

• 1 a section of a device for deburring an externally toothed component by means of two chamfering cutters according to the prior art;
• 2nd an enlarged section of the component 1 in the area of gearing;
• 3rd a section through the toothing according 2nd in the area of the chamfer;
• 4th a part of a first tool comprising two chamfering cutters and a brushing tool;
• 5 a part of a second tool comprising two chamfering cutters and two brushing tools; and
• 6 a part of a third tool comprising milling tools, two chamfering cutters and a brushing tool.

1 shows a section of a device for deburring an externally toothed component 100 using two chamfering cutters 3a , 3b According to the state of the art. The chamfering cutter 3a , 3b are on a drive shaft 2nd stored in the directions of rotation R1 around the axis of rotation 2a the drive shaft 2nd is rotatable. Furthermore, the drive axle 2nd along the axis of rotation 2a in a feed direction V slidable. The component 100 is by means of a component holder 200 , here in the form of a spindle, in one direction of rotation R2 around the axis of rotation 100a of the component 100 rotatably mounted. The component 100 has a toothing 10th on, the two end faces 13a , 13b having at the ends of the teeth 14 and tooth flanks 14a (compare 2nd ) the gearing 10th adjoin. The chamfering cutter 3a , 3b form a chamfer 15 at the transition between the respective end face 13a , 13b and the tooth 14 or the tooth flanks 14a from being a primary ridge 12 , which was formed there during gear milling, is removed.

2nd an enlarged section of the component 100 out 1 in the area of gearing 10th after deburring. The same reference numerals as in 1 identify the same elements. It's the teeth in detail 14 who have favourited Tooth Flanks 14a , the end faces 13a , 13b and the bevels formed 15 recognizable. There is also a secondary ridge 16 recognizable during the deburring process using the chamfering cutter 3a , 3b in the area of the transition between the respective tooth flank 14a and the bevel 15 has trained.

3rd now shows a section through the teeth 10th according to 2nd in the area of the chamfer 15 on. The same reference numerals as in the 1 and 2nd identify the same elements.

4th shows part of a first tool 1 comprising two chamfering cutters 3a , 3b and a first brushing tool 4a on a drive shaft 2nd . Here is the tool 1 only in half-cut to the axis of rotation 2a the drive shaft 2nd shown. The brushing tool is after the chamfering cutter 3a , 3b over the bevel 15 (compare 2nd and 3rd ) guided and removed the secondary ridge formed 16 immediately after the bevel is formed 15 again with brushes.

5 shows part of a second tool 1' comprising two chamfering cutters 3a , 3b and two brushing tools 4a , 4b on the drive shaft 2nd . Here is the tool 1' only in half-cut to the axis of rotation 2a the drive shaft 2nd shown. The brushing tools 4a , 4b according to the respective chamfer cutter 3a , 3b over the bevel 15 (compare 2nd and 3rd ) guided and removed the secondary ridge formed 16 immediately after the bevel is formed 15 again with brushes.

6 shows part of a third tool 1" comprehensive milling tools 5 , two chamfering cutters 3a , 3b and a brush tool 4a that are on a common drive shaft 2nd are arranged. Here is the tool 1" only in half-cut to the axis of rotation 2a the drive shaft 2nd shown. The brush tool 4a will be after forming the gearing 10th on the component 100 using the milling tools 5 and bevel formation 15 through the respective chamfer cutter 3a , 3b over the bevels 15 (compare 2nd and 3rd ) guided and removed the secondary ridge formed 16 immediately after the bevels are formed 15 again with brushes.
The right half of the tool covers 1" Parts of a first unit 20th a gear cutting machine, not shown in detail, for gear milling a geared component 100 while the left half of the tool 1" Parts of a second unit 30th the gear cutting machine for gear milling a geared component 100 includes. In a gear cutting machine using such a tool 1 " can be assembled on one component 100 Gear milling by means of the milling tools immediately in time and place 5 , deburring the primary ridge 12 through the chamfering cutter 3a , 3b as well as removing the secondary ridge 16 by means of brushes in parallel in one operation without the component 100 would have to be reclamped or introduced into various subsequent processing machines. The component 100 can be done using such a tool 1" can be finished and is available quickly and inexpensively in the final quality.

Reference symbol list

1

Tool

2nd

drive shaft

2a

Axis of rotation of the drive shaft

3a, 3b

Chamfer cutter

4a, 4b

Brushing tool

5

Milling tool

10th

Gearing

12

Primary ridge

13

Face

14

tooth

14a

Tooth flank

15

chamfer

16

Secondary ridge

20th

first unit

30th

two unit

100

Component

100a

Rotation axis of the component

200

Component pick-up

R1

Rotational movement

R2

Rotational movement

V

Feed motion

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102013015240 A1 [0001]

Claims (10)

Tool (1) for carrying out a deburring process, in which a primary burr (12) is removed from a toothing (10) of a component (100) after gear milling, comprising a drive shaft (2) and at least one on the drive shaft (2) arranged chamfer milling cutter (3a, 3b), characterized in that at least one brushing tool (4a, 4b) is also arranged on the drive shaft (2). Tool (1) after Claim 1 , characterized in that several chamfering cutters (3a, 3b) are arranged adjacent to one another on the drive shaft (2). Tool (1) after Claim 1 or 2nd , characterized in that, seen in a direction perpendicular to an axis of rotation (2a) of the drive shaft (2), a first brushing tool (4a) is arranged adjacent to the at least one chamfering cutter (3a, 3b). Tool after Claim 3 , characterized in that, viewed in the direction perpendicular to the axis of rotation (2a) of the drive shaft (2), opposite the first brushing tool (4a) and adjacent to the at least one chamfering cutter (3a, 3b), a second brushing tool (4b) is arranged. Deburring method, in which a primary burr (12) is removed from a toothing (10) of a component (100) after gear milling of the component (100) by removing each end face (13a, 13b) of the toothing (10), which has a number of Teeth (14) with tooth flanks (14a) are machined by means of at least one chamfering cutter (3a, 3b) with the formation of a chamfer (15) between the respective end face (13a, 13b) and each tooth flank (14a) Tooth flank (14a) and the chamfer (15) forms a secondary ridge (16), characterized in that the secondary ridge (16), using the tool (1) according to one of the Claims 1 to 4th , is removed in one operation by brushing immediately following the removal of the primary burr (12) by means of the at least one brushing tool (4a, 4b). Deburring process after Claim 5 , characterized in that the tool (1) is rotated about the axis of rotation (2a) of the drive shaft (2) during the removal of the primary burr (12) and the secondary burr (16) and that the workpiece (1) also about its axis of rotation (100a ) is rotated. Gear cutting machine, comprising - a first unit (20) for producing a toothing (10) on a component (100) by means of gear milling, - a second unit (30) for removing a primary burr (12) on the toothing (10) of the component (100 ) after gear milling, characterized in that the second unit (30) is a tool (1) according to one of the Claims 1 to 4th for removing a secondary ridge (16) formed during the removal of the primary ridge (12). Gear cutting machine after Claim 7 , In addition to the at least one chamfer milling cutter (3a, 3b) and the at least one brushing tool (4a, 4b), at least one milling tool (5) is arranged on the drive shaft (2) of the tool (1) to carry out the gear milling. Component (100) with a toothing, produced by a method according to one of the Claims 5 or 6 . Component (100) after Claim 9 , characterized in that it is an externally toothed component (100), in particular a gear.

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