CN209223202U - A kind of device reducing vehicle hole taper - Google Patents
A kind of device reducing vehicle hole taper Download PDFInfo
- Publication number
- CN209223202U CN209223202U CN201822198482.2U CN201822198482U CN209223202U CN 209223202 U CN209223202 U CN 209223202U CN 201822198482 U CN201822198482 U CN 201822198482U CN 209223202 U CN209223202 U CN 209223202U
- Authority
- CN
- China
- Prior art keywords
- knife bar
- mandril
- taper
- head cap
- cap screw
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model belongs to technical field of mechanical processing, and in particular to a kind of device for reducing vehicle hole taper, a kind of knife bar for the device reducing vehicle hole taper are taper, and bottom center is borehole structure, and the interior circular hole fixed mandril of knife bar, mandril slides in circular hole；The left end of mandril passes through knife bar tapered tip and fixes with cutter head, and the right end of mandril is connect with the first soket head cap screw, fastens mandril by the first soket head cap screw of rotation；Cutter hub is concave-shaped structure, and cutter hub housing is in the bottom end of knife bar；Second soket head cap screw passes through workpiece and is connected with knife bar, and the second soket head cap screw of fastening realizes that the position of knife bar is fixed.It when the utility model processing is compared with deep hole, if generating taper, does not need to stop production, does not need adjustment headstock；Do not need overhaul or in repair lathe, the knife bar of adjustable cutting position is only pressed from both sides using machine by operator, so that it may reduce the method for vehicle hole taper.Using centrum knife bar, be conducive to improve knife bar intensity.
Description
Technical field
The utility model belongs to technical field of mechanical processing, and in particular to a kind of device for reducing vehicle hole taper.
Background technique
When processing is compared with deep hole, taper is often generated, as shown in Figure 1.There are many reason of generating taper, such as machine tool chief axis
Rotation axis is not parallel with machine tool guideway；The parallelism error (distortion) of front and rear guide rails；Lathe tool arbor stiffness deficiency etc..It solves
The above problem, common method are to stop production several days, adjust headstock and overhaul or in repair lathe (pincers worker scraping guide rail)；It tries every possible means
Improve lathe tool arbor stiffness.
Utility model content
The purpose of this utility model is to provide one kind not to have to adjustment headstock and medium-capital overhauling lathe, uses machine by operator
Press from both sides the knife bar of adjustable cutting position, so that it may reduce the method for vehicle hole taper.
The technical solution of the utility model is as follows:
When processing on lathe, workpiece rotates, and cutter does not rotate, and only makees length feed movement.
When using lathe tool vehicle hole on lathe, general point of a knife is all in horizontal position.A, B point as shown in Fig. 2 (b).
Since bed ways are worn, saddle track and main shaft rotation center are not parallel, so can generate positive and negative taper when positive and negative feed.
If point of a knife is changed into C point or the point position D carries out vehicle hole, it is computed and it was verified that taper can be reduced or even eliminated.
A kind of device reducing vehicle hole taper, including in cutter head, mandril, knife bar, the first soket head cap screw, cutter hub and second
Hex screw；
The knife bar is taper, and bottom center is borehole structure, and the interior circular hole fixed mandril of knife bar, mandril is in circular hole
Interior sliding；The left end of mandril passes through knife bar tapered tip and fixes with cutter head, and the right end of mandril is connect with the first soket head cap screw, leads to
Cross rotation the first soket head cap screw fastening mandril；Cutter hub is concave-shaped structure, and cutter hub housing realizes fixing cutter in the bottom end of knife bar
Bar；The side wall that second soket head cap screw passes through cutter hub is connected with knife bar, and the position of knife bar is realized by the second soket head cap screw of fastening
Set fixation.
Further, second soket head cap screw is two, along knife bar axial restraint.The mountable size of cutter hub, length
Short different centrum knife bar is allowed to one and is mostly used, can carry out positive and negative cutting.
Change the initial position of cutting point, first unclamps the second soket head cap screw, a small amount of angle position for rotating taper knife bar
It sets, that is, changes the position of cutting point, tighten the second soket head cap screw, it can machining.
A kind of application method for the device reducing vehicle hole taper, specific method is:
Using the knife bar of adjustable cutting position, first cut with positive knife in A point, Che Konghou measures both ends with dial bore gage
Difference, then cut with anti-knife in B point, then measure both ends difference, compare whether equal with positive knife vehicle hole difference.By trying to add twice
Work can be detected out its taper size.
At this time can according to trial cut as a result, within the scope of angle [alpha] area shown in Fig. 2 rotate taper knife bar angle position, that is, change
The position for becoming cutting point carries out trial cut, until taper is less than defined numerical value.After being adjusted to optimum position, K shown in Fig. 2
Graticule is carved on place's conical surface, convenient for using when filling knife or positioning next time after sharpening again.
The position for why changing point of a knife cutting point can reduce the taper in vehicle hole?
As shown in Figure 3, Figure 4, if the end face A is the starting end face in hole,Angle be way rub after with machine tool chief axis center line
Angle, Y1Indicate horizontal distance of the point of a knife away from main shaft gyration axis on arbitrary section, X indicate point of a knife along longitudinal direction with the end face A
Distance.It is located at the horizontal distance Y that point of a knife adjusts on the end face A2=OB (see Fig. 4), if point of a knife adjustment knife D point is cut,
If vertical range of the D point away from axis of rotation is Z=DE, then as shown in Figure 4:
Z=DE=ODsin θ=rsin θ=Y2sinθ
When point of a knife is vertically moved along guide rail, point width axis of rotation apart from when it is constant, i.e. Z is constant.
Then distance of the point of a knife away from main shaft gyration axis in arbitrary section is
R be point of a knife be transferred to D point cutting, and vertically move X apart from when aperture size.When the angle θ is arbitrary value, the cone in hole
AngleIt can be found out by following formula:
When θ is equal to zero degree, cos θ is maximum, and value is minimum in radical sign, andValue is maximum, i.e.,
So
When θ is any other value,Value can all become smaller, i.e.,So as long as changing the cutting position of point of a knife
It sets, taper can be reduced or even eliminated.
The utility model has the beneficial effects that
It when processed in this way compared with deep hole, if generating taper, does not need to stop production, does not need adjustment headstock；No
Need overhaul or in repair lathe (pincers worker scraping guide rail), the knife bar of adjustable cutting position is only pressed from both sides using machine by operator, so that it may subtract
The method of trolley hole taper.Using centrum knife bar, be conducive to improve knife bar intensity.In addition, centrum knife rod head can be made to slightly
It is smaller, the gap of knife bar and hole is increased, chip removal is conducive to.The different centrum knife bar of the mountable size of one cutter hub, length, is allowed to
One is multi-purpose, can carry out positive and negative cutting.Rough turn or half smart car is carried out in C point with positive knife, with anti-knife in D point smart car, avoids chip
It is deposited on rake face, is conducive to chip removal, thus overcome the drawbacks of chip scratches machined surface, while also improving smart car
In the knife service life, it ensure that product quality.
Detailed description of the invention
Attached drawing 1 is the taper schematic diagram in vehicle hole.
Attached drawing 2 (a) is the overall schematic of the utility model.
Attached drawing 2 (b) is the whole left view of the utility model.
Attached drawing 3 is point of a knife longitudinal movement trajectory diagram.
Attached drawing 4 is the rotary track figure of the point of a knife on the end A.
In figure: 1 workpiece；2 cutter heads；3 mandrils；4 knife bars；5 first soket head cap screws；6 cutter hubs；7 second soket head cap screws.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As shown in Fig. 2, a kind of device for reducing vehicle hole taper includes cutter head 2, mandril 3, knife bar 4, the first soket head cap screw
5, cutter hub 6 and the second soket head cap screw 7.
The knife bar 4 is taper, and bottom center is hollow structure, the interior hollow structure fixed mandril 3 of knife bar 4, top
The left end of bar 3 and cutter head 2 are fixed, and the right end of mandril 3 is connect with the first soket head cap screw 5, by rotating the first soket head cap screw 5
Fasten mandril 3.Cutter hub 6 is concave-shaped structure, the bottom end of 6 recess housing knife bar 4 of cutter hub.Second soket head cap screw 7 passes through cutter hub 6
Side wall be connected with knife bar 4, realize that the position of knife bars 4 is fixed by two the second soket head cap screws 7 of fastening.
Change the initial position of cutting point, first unclamps two soket head cap screws 7, a small amount of angle for rotating taper knife bar 4
Position changes the position of cutting point, tightens two soket head cap screws 7, can machining.
A kind of application method for the device reducing vehicle hole taper, specific method is:
Using the knife bar 4 of adjustable cutting position, first cut with positive knife in A point, Che Konghou measures two with dial bore gage
Head difference, then cut with anti-knife in B point, then measure both ends difference, compare whether equal with positive knife vehicle hole difference.By trying twice
Processing, can be detected out its taper size.
It at this time can be according to trial cut as a result, rotating the angle position of taper knife bar within the scope of angle [alpha] area shown in Fig. 2 (b), i.e.,
The position for changing cutting point carries out trial cut, until taper is less than defined numerical value.After being adjusted to optimum position, in Fig. 2 (b)
Graticule is carved on the conical surface at shown K, convenient for using when filling knife or positioning next time after sharpening again.
Claims (3)
1. a kind of device for reducing vehicle hole taper, which is characterized in that including in cutter head (2), mandril (3), knife bar (4), first six
Angle screw (5), cutter hub (6) and the second soket head cap screw (7)；
The knife bar (4) is taper, and bottom center is borehole structure, the interior circular hole fixed mandril (3) of knife bar (4), mandril
(3) it is slided in circular hole；It is fixed that the left end of mandril (3) passes through knife bar (4) tapered tip and cutter head (2), the right end of mandril (3) with
First soket head cap screw (5) connection, passes through rotation the first soket head cap screw (5) fastening mandril (3)；Cutter hub (6) is concave shape knot
Structure, bottom end of cutter hub (6) housing in knife bar (4)；Second soket head cap screw (7) passes through the side wall and knife bar (4) phase of cutter hub (6)
Even, realize that the position of knife bar (4) is fixed by fastening the second soket head cap screw (7).
2. a kind of device for reducing vehicle hole taper as described in claim 1, which is characterized in that second soket head cap screw
It (7) is two, along knife bar (4) axial restraint.
3. a kind of device for reducing vehicle hole taper as claimed in claim 1 or 2, which is characterized in that cutter hub (6) fixed size,
The different knife bar of length (4) realizes that one is multi-purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198482.2U CN209223202U (en) | 2018-12-26 | 2018-12-26 | A kind of device reducing vehicle hole taper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198482.2U CN209223202U (en) | 2018-12-26 | 2018-12-26 | A kind of device reducing vehicle hole taper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209223202U true CN209223202U (en) | 2019-08-09 |
Family
ID=67509091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822198482.2U Expired - Fee Related CN209223202U (en) | 2018-12-26 | 2018-12-26 | A kind of device reducing vehicle hole taper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209223202U (en) |
-
2018
- 2018-12-26 CN CN201822198482.2U patent/CN209223202U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190809 Termination date: 20211226 |