CN108356288A - Brake drum processing method and brake drum - Google Patents
Brake drum processing method and brake drum Download PDFInfo
- Publication number
- CN108356288A CN108356288A CN201810142987.9A CN201810142987A CN108356288A CN 108356288 A CN108356288 A CN 108356288A CN 201810142987 A CN201810142987 A CN 201810142987A CN 108356288 A CN108356288 A CN 108356288A
- Authority
- CN
- China
- Prior art keywords
- turning
- brake drum
- brake
- turns
- processing method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/10—Drums for externally- or internally-engaging brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses a kind of brake drum processing methods and brake drum, method to include：Mobile turning alternately and fixed turning successively；The mobile turning is：Lathe tool carries out turning with 0.2 0.25 millimeters/turns of the amount of feeding to brake drum；The fixed turning is：Lathe tool carries out turning with 0 millimeter/turn of the amount of feeding to the brake drum；Wherein, the mobile turning continues 40 50 turns, and the fixed turning continues 5 10 turns.Every 40 50 turns of spiral shape turning trace on the rubbing surface of brake drum, there is one section of annulus turning trace.While solution, under the premise of not increasing cost and workload, the cylindricity of brake drum processing is also ensured；The brake drum inner friction surface prepared by this method not will produce continuous spiral microscopic grooves, in this way be inclined to the great disturbance reduced when new brake drum is contacted with brake-shoe, and then promote the brake efficiency and level of NVH of brake；It improves the primary offline qualification rate of new car braking and reduces new car braking NVH problems.
Description
Technical field
The present invention relates to brake drum processing method and brake drums.
Background technology
It is minimized in passenger car in commercial car part at present, drum brake still occupies larger ratio, especially exists
The use ratio of rear axle is very high in the type vehicle.
Existing drum brake systems, are combined friction pair with brake drum by drum brake and are realized, pass through system
The rubbing surface of brake-shoe on dynamic device is contacted with the rubbing surface on brake drum, generates braking moment.Connecing between the pair that therefore rubs
Touch noise, vibration and sound vibration roughness (Noi se, Vibrat ion, Harshness, NVH) performance when relationship affect braking
And moment of friction.
One brake drum technique will determine that specific machine adds according to the case where cast blank, equipment, cutter and production capacity demand
Parameter；After lathe tool is set according to feeding surplus direction, at the uniform velocity moved according to direction of feed straight line, brake drum is rotated according to workpiece
Direction rotates, and when lathe tool is moved to setting position, entire rubbing surface just machines.From process lathe tool and brake drum work
Part relative motion relation sees that lathe tool is a continuous helix 1 ' in the track that rubbing surface is walked, as shown in Figure 1.
After new car is assembled with such brake drum, when initially being combined with the brake-shoe of brake；Due to brake drum
Rubbing surface has helix 1 ', after brake-shoe is opened by the effect of wheel cylinder thrust, when being contacted with brake drum, by brake drum
The influence of inner surface turning helix 1 ', brake-shoe will be moved along 1 ' direction of continuous helix.
After being processed the disturbance of 1 ' texture of helix by brake drum, shoe brake will will produce with brake drum contact face
Direction force is inclined in disturbance outward (or inward).Because brake drum is generally the component of same process processing, in this way in a trolley
Left and right wheels on brake drum and when brake-shoe cooperating, it is opposite that direction force is inclined in disturbance that helix 1 ' generates
Brake-shoe is influenced by wheel cylinder thrust and disturbance tendency direction force simultaneously when brake initial brake so that entire
The crooked tendency in the oriented 1 ' direction of continuous helical line of brake-shoe；So will not make wheel cylinder thrust when on brake-shoe just not
It is vertical again, is equivalent to produces a component in this way, counteracts part wheel cylinder thrust, and this will be strengthened in the process
Tendency, so this will can decrease the brake efficiency for making entire brake.Simultaneously because the shadow of disturbance tendency direction force
Ring so that the contact surface of brake-shoe and brake drum is no longer substantially parallel, it is microcosmic on will generate the tendency of certain angle, this tendency
Contact process will be caused to easy to produce noise.Above-mentioned influence will influence the primary offline qualification rate of the offline braking of new car and lead to new car
Go out to brake NVH problems.
Invention content
The object of the present invention is to provide a kind of brake drum processing method and brake drums, solve brake drum machined surface continuous helical
The disturbance tendency that tape comes；The unstability for reducing brake efficiency when new car brake drum is contacted with brake-shoe reduces braking NVH hairs
Raw probability.
The brake drum processing method of the present invention, including：Mobile turning alternately and fixed turning successively；The movement
Turning is：Lathe tool is with 0.2 millimeter/turning -0.25 millimeter/, and the amount of feeding turned carries out turning to brake drum；The fixed turning is：Vehicle
Knife carries out turning with 0 millimeter/turn of the amount of feeding to the brake drum；Wherein, the mobile turning continues 40 turns -50 turns, described
Fixed turning continues 5 turns -10 turns.
Brake drum processing method as described above, wherein the turning depth of lathe tool is 0.5 millimeter -1 millimeter.
Brake drum processing method as described above, wherein turning rotating speed is 500 revs/min -550 revs/min.
Brake drum processing method as described above, wherein the mobile turning continues 45 turns, and the fixed turning continues 8
Turn.
Brake drum processing method as described above, wherein the turning depth of lathe tool is 0.8 millimeter.
Brake drum processing method as described above, wherein turning rotating speed is 530 revs/min.
The brake drum of the present invention makes to prepare with the aforedescribed process, every 40 turns -50 turns on the rubbing surface of the brake drum
Spiral shape turning trace has one section of annulus turning trace.
The present invention only by the basis of existing brake drum turnery processing, using new processing method, without
Increase additional process equipment；While solution, under the premise of not increasing cost and workload, braking is also ensured
The cylindricity of drum processing；The brake drum inner friction surface prepared by this method, not will produce continuous spiral microscopic grooves, this
The great disturbance reduced when new brake drum is contacted with brake-shoe is inclined to by sample, and then promotes the brake efficiency and NVH of brake
It is horizontal；It improves the primary offline qualification rate of new car braking and reduces new car braking NVH problems.
Description of the drawings
Fig. 1 is the trace line of turning in the prior art；
Fig. 2 is the trace line of turning in brake drum processing method of the present invention.
Reference numeral：
The prior art：1 '-helix；
The present invention；1- helixes；2- circular arc lines.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention discloses a kind of brake drum processing method, including：Mobile turning alternately and fixed turning successively；Institute
Stating mobile turning is：Lathe tool is with 0.2 millimeter/turning -0.25 millimeter/, and the amount of feeding turned carries out turning to brake drum；The fixed vehicle
Cut for：Lathe tool carries out turning with 0 millimeter/turn of the amount of feeding to the brake drum；Wherein, the mobile turning continues 40 turn -50
Turn, the fixed turning continues 5 turns -10 turns.Preferably, mobile turning continues 45 turns, and the fixed turning continues 8 turns.
It is cut that is, the present invention in processing brake drum, first carries out locomotive, one section of spiral is had on such machined surface
Line 1, and when mobile turning continue for 40 and go to 50 turns, turning is just fixed, to which continuous helix 1 will not be formed,
The fixation turning generally continues 5 and goes to 10 turns, first, ensure the precision of turning, second is that avoid too fast fixation turning, cause according to
The old helix 1 for continuing mobile turning and being formed.When continuous fixed turning 5 goes to 10 turns to ensure fixed turning, the turning of formation
Line forms circular arc line 2.As shown in Fig. 2, per having one section of circular arc line 2 between section spiral line 1.
The turning depth of lathe tool is 0.5 millimeter -1 millimeter.Preferably 0.8 millimeter.
Turning rotating speed is 500 revs/min -550 revs/min.Preferably 530 revs/min.
Invention additionally discloses a kind of brake drums prepared using the above method, every 40 turn -50 on the rubbing surface of brake drum
The spiral shape turning trace turned has one section of annulus turning trace.
The structure, feature and effect of the present invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (7)
1. a kind of brake drum processing method, which is characterized in that including：
Mobile turning alternately and fixed turning successively；
The mobile turning is：Lathe tool is with 0.2 millimeter/turning -0.25 millimeter/, and the amount of feeding turned carries out turning to brake drum；
The fixed turning is：Lathe tool carries out turning with 0 millimeter/turn of the amount of feeding to the brake drum；Wherein,
The mobile turning continues 40 turns -50 turns, and the fixed turning continues 5 turns -10 turns.
2. brake drum processing method according to claim 1, which is characterized in that
The turning depth of lathe tool is 0.5 millimeter -1 millimeter.
3. brake drum processing method according to claim 1, which is characterized in that
Turning rotating speed is 500 revs/min -550 revs/min.
4. brake drum processing method according to claim 1, which is characterized in that
The mobile turning continues 45 turns, and the fixed turning continues 8 turns.
5. brake drum processing method according to claim 2, which is characterized in that
The turning depth of lathe tool is 0.8 millimeter.
6. brake drum processing method according to claim 3, which is characterized in that
Turning rotating speed is 530 revs/min.
7. a kind of brake drum prepared using claim 1-6 any one of them methods, which is characterized in that
Every 40 turns -50 turns of spiral shape turning trace on the rubbing surface of the brake drum, there is one section of annulus turning trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142987.9A CN108356288A (en) | 2018-02-11 | 2018-02-11 | Brake drum processing method and brake drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142987.9A CN108356288A (en) | 2018-02-11 | 2018-02-11 | Brake drum processing method and brake drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108356288A true CN108356288A (en) | 2018-08-03 |
Family
ID=63005980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810142987.9A Pending CN108356288A (en) | 2018-02-11 | 2018-02-11 | Brake drum processing method and brake drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108356288A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459008A (en) * | 2000-09-18 | 2003-11-26 | 安全有效有限公司 | Brake shoe and drum brake system incorporating same |
| JP2008290187A (en) * | 2007-05-24 | 2008-12-04 | Okuma Corp | Turning processing method |
| CN103573874A (en) * | 2012-07-31 | 2014-02-12 | 嘉兴四通车轮股份有限公司 | Drum brake and manufacturing method for same |
| CN105215376A (en) * | 2015-08-26 | 2016-01-06 | 上海汇众汽车制造有限公司 | Brake drum processing method |
-
2018
- 2018-02-11 CN CN201810142987.9A patent/CN108356288A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459008A (en) * | 2000-09-18 | 2003-11-26 | 安全有效有限公司 | Brake shoe and drum brake system incorporating same |
| JP2008290187A (en) * | 2007-05-24 | 2008-12-04 | Okuma Corp | Turning processing method |
| CN103573874A (en) * | 2012-07-31 | 2014-02-12 | 嘉兴四通车轮股份有限公司 | Drum brake and manufacturing method for same |
| CN105215376A (en) * | 2015-08-26 | 2016-01-06 | 上海汇众汽车制造有限公司 | Brake drum processing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180803 |