PRODUCT SELECTION/POSITIONING PIN/BLOCK
PRODUCT OVERVIEW/COMPONENTS FOR POSITIONING
■ Positioning Pins
■ Precautions for use
Shape
Precision
Part Number
Shipping Date
Tapered Pins
When assembling, if the matching taper is large, it may be necessary to adjust the height of the taper so that they fit more tightly, but if the matching taper is small, it is necessary to take stick- ing of the pin into consideration. At 0.5°and 1°taper (also 3°taper in some cases), sticking can be avoided by setting them slightly afloat as shown in the figure on the left. When the angle is small, the creep of the height (a in the left drawing) against the width (b in the left drawings) is also small, so there is no need to worry about positioning inaccuracies.
Page
Rank Concentricity *
Set
Pin only Bushing only
Basic Shape How to mount
TPN
–
–
Match mark
Standard
TPNV VTPN ZTPN TPNC
TPNVP VTPNP ZTPNP
TPNVB VTPNB ZTPNB
0.01
Standard Mounting
P.839
Precision
0.005 0.003
Extra precision
a
–
–
Match mark
Standard
＊ For 0.5°, slightly afloat setting is especially recommended.
Value b to error a
TPV
TPVP
TPVB
0.01
Bushing PL side Fixing
P.841
VTPV ZTPV TPVX
VTPVP ZTPVP TPVXP VTPVXP
VTPVB ZTPVB
Precision
0.005 0.003
Extra precision
a
0.1
0.3
0.5
Angled
TPVXB VTPVXB
Standard Precision
0.01
Pin/Bushing PL side Fixing
b
0.5°
0.0009 0.0018
0.0026
0.0044
P.843
VTPVX
0.005
1° 3°
0.005 0.016
0.009 0.026
Standard Mounting Bushing PL side Fixing
0.005
TPNF
TPNFP
TPNFB
P.844
0.003
Straight pins
● How to mount
TPNFC TPNFCP TPNFCB
P.845
0.003
• Contact of the pin and bushing when the mold is closed may cause damage. Please leave a clearance of about 1mm. • Use precision leader pins since clearance is fairly small.
Pin/Bushing PL side Fixing
TPNFCX TPNFCXP TPNFCXB
P.846
0.003
Precision
–
F–TPNFP F–TPNFB
P.847
0.003
PPD □ PPDF □ PPH □ PPHF □
–
–
–
● About N dimension (Dismounting tap)
P.851
Head type
–
–
–
As shown in the figure, the bushing can be easily removed by screw- ing a bolt into its tap (N) and extracting it.
P.L.
PPI PPIR
–
–
Web only
Standard
–
* Concentricity: Tapered part or straight part to outer diameter
■ Positioning Blocks
Shape
Precision
Part Number
Shipping Date
Other Features
Page
Basic Positioning place Shape Rank Symmetry *
Set
Pin only
Bushing only
TBS
–
–
Standard Combining
P.853
–
Tapered
Tapered Block
VTBS
VTBSP
VTBSB
Precision 0.005
● About N dimension (Dismounting tap)
LBJX
LBJXP
LBJXB
P.865
Standard
–
–
＊ Arrows indicate direction of thermal expansion
The tapered block sets are capable of offsetting the plate's thermal expansion caused in high temperature molding processes for thermo- setting resins, etc., thereby maintaining positioning accuracy. The pin type positioning method cannot thoroughly absorb thermal expansion when it takes place in directions as shown in the figure on the left. The block type will be unaffected if the groove direction is in parallel to the directions of thermal expansion as shown in the drawing.
About mounting bolt hole (N): 1 or 2 As shown in the figure on the left, the block can be easily removed by screwing a bolt into its tapping part to extract it.
TBSF
–
–
P.855
–
Cavity Inserts
TBSFM
–
–
P.856
Precision
Oil groove
0.003
Straight
Cavity
TTSB
–
–
P.863
Space saving
VTBSF
–
–
P.857
–
Extra precision
VTTSB
–
–
P.863
Combining Space saving
TSSB
–
–
–
When assembling, if the matching taper is large, it may be necessary to adjust the height of the taper so that they fit more tightly, but if the matching taper is small, it is necessary to take sticking of the pin into consideration. At 1°taper (also 3°taper in some cases), sticking can be avoided by setting them slightly afloat as shown in the figure on the left. When the angle is small, the creep of the height (a in the left drawing) against the width (b in the left drawings) is also small, so there is no need to worry about positioning inaccuracies.
P.858
TSSBM
–
–
Oil groove
Precision
Straight
0.003
Base
TSSBN
–
–
P.859
TiN coating
a
Extra precision
VTSSB
–
–
P.860
–
– P.861 ＊ Symmetry: Degree of symmetry of tapered or straight part with regards to the external shape TSST – –
Tapered Precision
( Value b
to error a )
a
0.1
0.3
0.5
Angled
1° 3°
0.0018 0.005 0.009 0.005 0.016 0.026
b
Straight Block
Side Installation Type
溝加工
エンドミル
When positioning is begun
Mold closed
When the convex side and a concave side knock against each other, it causes damage. Please open about 1mm and use it.
See each product page for details
A relatively large sized mold can be positioned more precisely us- ing 2 of the block set at each side in longitudinal direction of the mold base.
837
838
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