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comps_new.py
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comps_new.py
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# ----------------------------------------------------------------------------
# -- Components
# -- comps library
# -- Python classes that creates useful parts for FreeCAD
# ----------------------------------------------------------------------------
# -- (c) Felipe Machado
# -- Area of Electronics. Rey Juan Carlos University (urjc.es)
# -- October-2016
# ----------------------------------------------------------------------------
# -- (c) David Muñoz
# -- Update
# -- Area of Electronics. Rey Juan Carlos University (urjc.es)
# -- February-2021
# ----------------------------------------------------------------------------
# --- LGPL Licence
# ----------------------------------------------------------------------------
import FreeCAD
import Part
import DraftVecUtils
import inspect
import logging
import os
import math
import fcfun
import kcomp
import NuevaClase
from NuevaClase import Obj3D
from fcfun import V0, VX, VY, VZ, addCyl_pos
logging.basicConfig(level=logging.DEBUG,
format='%(%(levelname)s - %(message)s')
logger = logging.getLogger(__name__)
class SkDir (Obj3D):
# Similar to Sk, but in any direction
"""
SK dimensions:
dictionary for the dimensions
::
mbolt: is mounting bolt. it corresponds to its metric
tbolt: is the tightening bolt.
SK12 = { 'd':12.0, 'H':37.5, 'W':42.0, 'L':14.0, 'B':32.0, 'S':5.5,
'h':23.0, 'A':21.0, 'b': 5.0, 'g':6.0, 'I':20.0,
'mbolt': 5, 'tbolt': 4}
::
fc_axis_h
:
___:___ _______________________________ tot_h
| ___ |
| / \ | __________ HoleH = h
| \___/ | __
__| |__ /| __
|_____________|/ __ TotD = L ___________________
___:___ ___
| ___ | |...|
| / 2 \ | 3 1 |.....> fc_axis_d
| \_*_/ | |...|
____| |____ |___|
8_:5_____4_____::_|..fc_axis_w 6_7_|....... fc_axis_d
: : : :
:... tot_w .......: :...:
tot_d
Parameters
----------
fc_axis_h : FreeCAD.Vector
Axis on the height direction
fc_axis_d : FreeCAD.Vector
Axis on the depth (rod) direction
fc_axis_w : FreeCAD.Vector
Width (perpendicular) dimension, only useful if I finally
include the tightening bolt, or if w_o != 1
h_o : int
* 1: reference at the Rod Height dimension (rod center):
points 1, 2, 3
* 0: reference at the base: points 4, 5
w_o : int
* 1: reference at the center on the width dimension (fc_axis_w)
points: 2, 4,
* 0: reference at one of the bolt holes, point 5
* -1: reference at one end. point 8
d_o : int
* 1: reference at the center of the depth dimension
(fc_axis_d) points: 1,7
* 0: reference at one of the ends on the depth dimension
points 3, 6
pillow : int
* 1 to make it the same height of a pillow block
pos : FreeCAD.Vector
Placement
wfco : int
* 1 to create a FreeCAD Object
tol : float
Tolerance of the axis
name : str
FreeCAD Object name
Returns
-------
FreeCAD Object
FreeCAD Object of a shaft holder
"""
# separation of the upper side (it is not defined). Change it
# measured for sk12 is 1.2
up_sep_dist = 1.2
# tolerances for holes
holtol = 1.1
def __init__(self, size,
fc_axis_h=VZ,
fc_axis_d=VX,
fc_axis_w=V0,
pos_h=1,
pos_w=1,
pos_d=1,
pillow=0, # make it the same height of a pillow block
pos=V0,
wfco=1,
tol=0.3,
name="shaft_holder"):
self.size = size
self.wfco = wfco
self.name = name
self.pos = FreeCAD.Vector(0, 0, 0)
self.position = pos
self.tol = tol
self.pos_h = pos_h
self.pos_w = pos_w
self.pos_d = pos_d
doc = FreeCAD.ActiveDocument
if pillow == 0:
skdict = kcomp.SK.get(size)
else:
skdict = kcomp.PILLOW_SK.get(size)
if skdict is None:
logger.error("Sk size %d not supported", size)
# normalize de axis
axis_h = DraftVecUtils.scaleTo(fc_axis_h, 1)
axis_d = DraftVecUtils.scaleTo(fc_axis_d, 1)
if fc_axis_w == V0:
axis_w = axis_h.cross(axis_d)
else:
axis_w = DraftVecUtils.scaleTo(fc_axis_w, 1)
axis_h_n = axis_h.negative()
axis_d_n = axis_d.negative()
axis_w_n = axis_w.negative()
NuevaClase.Obj3D.__init__(self, axis_d, axis_w, axis_h, name=name)
# Total height:
sk_h = skdict['H']
self.tot_h = sk_h
# Total width (Y):
sk_w = skdict['W']
self.tot_w = sk_w
# Total depth (x):
sk_d = skdict['L']
self.tot_d = sk_d
# Base height
sk_base_h = skdict['g']
# center width
sk_center_w = skdict['I']
# Axis height:
sk_axis_h = skdict['h']
# self.axis_h = sk_axis_h
# Mounting bolts separation
sk_mbolt_sep = skdict['B']
# tightening bolt with added tolerances:
tbolt_d = skdict['tbolt']
# Bolt's head radius
tbolt_head_r = (self.holtol
* kcomp.D912_HEAD_D[skdict['tbolt']])/2.0
# Bolt's head length
tbolt_head_l = (self.holtol
* kcomp.D912_HEAD_L[skdict['tbolt']])
# Mounting bolt radius with added tolerance
mbolt_r = self.holtol * skdict['mbolt']/2.
self.d0_cen = 0
self.w0_cen = 1 # symmetric
self.h0_cen = 0
# vectors from the origin to the points along axis_d:
self.d_o[0] = V0 # origin
self.d_o[1] = self.vec_d(sk_d/2.)
self.d_o[2] = self.vec_d(sk_d)
# vectors from the origin to the points along axis_w:
self.w_o[0] = V0
self.w_o[1] = self.vec_w(sk_mbolt_sep/2)
self.w_o[2] = self.vec_w(sk_w/2)
# vectors from the origin to the points along axis_h:
self.h_o[0] = V0
self.h_o[1] = self.vec_h(sk_axis_h)
# calculates the position of the origin, and keeps it in attribute pos_o
self.set_pos_o()
# TODO: See how to change this reference points
if pos_h == 1: # distance vectors on axis_h
ref2rod_h = V0 # h_o[0]
ref2base_h = DraftVecUtils.scale(axis_h, -sk_axis_h) # h_o[1]
else:
ref2rod_h = DraftVecUtils.scale(axis_h, sk_axis_h) # h_o[1]
ref2base_h = V0 # h_o[0]
if pos_w == 0: # distance vectors on axis_w
ref2cen_w = V0 # w_o[0]
ref2bolt_w = DraftVecUtils.scale(axis_w, -sk_mbolt_sep/2.) # w_o[-1]
ref2end_w = DraftVecUtils.scale(axis_w, -sk_w/2.) # w_o[2]
elif pos_w == 1:
ref2cen_w = DraftVecUtils.scale(axis_w, sk_mbolt_sep/2.) # w_o[1]
ref2bolt_w = V0 # w_o[0]
ref2end_w = DraftVecUtils.scale(axis_w, -(sk_w-sk_mbolt_sep)/2.) # w_o[]
else: # w_o == -1 at the end on the width dimension
ref2cen_w = DraftVecUtils.scale(axis_w, sk_w/2.) # w_o[2]
ref2bolt_w = DraftVecUtils.scale(axis_w, (sk_w-sk_mbolt_sep)/2.) # w_o[]
if pos_d == 1: # distance vectors on axis_d
ref2cen_d = V0 # d_o[0]
ref2end_d = DraftVecUtils.scale(axis_d, -sk_d/2.) # d_o[1]
else:
ref2cen_d = DraftVecUtils.scale(axis_d, sk_d/2.) # d_o[1]
ref2end_d = V0 # d_o[0]
# TODO: Use the newe method:
# super().get_pos_dwh(pos_d,pos_w,pos_h)
basecen_pos = self.pos + ref2base_h + ref2cen_w + ref2cen_d
# Making the tall box:
shp_tall = fcfun.shp_box_dir(box_w=sk_center_w,
box_d=sk_d,
box_h=sk_h,
fc_axis_w=axis_w,
fc_axis_h=axis_h,
fc_axis_d=axis_d,
cw=1, cd=1, ch=0, pos=basecen_pos)
# Making the wide box:
shp_wide = fcfun.shp_box_dir(box_w=sk_w,
box_d=sk_d,
box_h=sk_base_h,
fc_axis_w=axis_w,
fc_axis_h=axis_h,
fc_axis_d=axis_d,
cw=1, cd=1, ch=0, pos=basecen_pos)
shp_sk = shp_tall.fuse(shp_wide)
doc.recompute()
shp_sk = shp_sk.removeSplitter()
holes = []
# Shaft hole,
rodcen_pos = self.pos + ref2rod_h + ref2cen_w + ref2cen_d
rod_hole = fcfun.shp_cylcenxtr(r=size/2. + self.tol,
h=sk_d,
normal=axis_d,
ch=1,
xtr_top=1,
xtr_bot=1,
pos=rodcen_pos)
holes.append(rod_hole)
# the upper sepparation
shp_topopen = fcfun.shp_box_dir_xtr(box_w=self.up_sep_dist,
box_d=sk_d,
box_h=sk_h-sk_axis_h,
fc_axis_w=axis_w,
fc_axis_h=axis_h,
fc_axis_d=axis_d,
cw=1, cd=1, ch=0,
xtr_h=1, xtr_d=1, xtr_nd=1,
pos=rodcen_pos)
holes.append(shp_topopen)
# Tightening bolt hole
# tbolt_d is the diameter of the bolt: (M..) M4, ...
# tbolt_head_r: is the radius of the tightening bolt's head
# (including tolerance), which its bottom either
# - is at the middle point between
# - A: the total height :sk_h
# - B: the top of the shaft hole: axis_h + size/2.
# - so the result will be (A + B)/2
# tot_h - (axis_h + size/2.)
# _______..A........................
# | ___ |.B.......+ rodtop2top_dist = sk_h - (axis_h + size/2.)
# | / \ |.......+ size/2.
# | \___/ | :
# __| |__ + axis_h
# |_____________|....:
rodtop2top_dist = sk_h - (sk_axis_h + size/2.)
tbolt_pos = (rodcen_pos
+ DraftVecUtils.scale(axis_w, sk_center_w/2.)
+ DraftVecUtils.scale(axis_h, size/2.)
+ DraftVecUtils.scale(axis_h, rodtop2top_dist/2.))
shp_tbolt = fcfun.shp_bolt_dir(r_shank=tbolt_d/2.,
l_bolt=sk_center_w,
r_head=tbolt_head_r,
l_head=tbolt_head_l,
hex_head=0,
xtr_head=1,
xtr_shank=1,
support=0,
fc_normal=axis_w_n,
fc_verx1=axis_h,
pos=tbolt_pos)
holes.append(shp_tbolt)
# Mounting bolts
cen2mbolt_w = DraftVecUtils.scale(axis_w, sk_mbolt_sep/2.)
for w_pos in [cen2mbolt_w.negative(), cen2mbolt_w]:
mbolt_pos = basecen_pos + w_pos
mbolt_hole = fcfun.shp_cylcenxtr(r=mbolt_r,
h=sk_d,
normal=axis_h,
ch=0,
xtr_top=1,
xtr_bot=1,
pos=mbolt_pos)
holes.append(mbolt_hole)
shp_holes = fcfun.fuseshplist(holes)
shp_sk = shp_sk.cut(shp_holes)
self.shp = shp_sk
if wfco == 1:
super().create_fco()
# Need to set first in (0,0,0) and after that set the real placement.
# This enable to do rotations without any issue
self.fco.Placement.Base = FreeCAD.Vector(0, 0, 0)
self.fco.Placement.Base = self.position
def color(self, color=(1, 1, 1)):
if self.wfco == 1:
self.fco.ViewObject.ShapeColor = color
else:
logger.debug("Object with no fco")
class AluProf (Obj3D):
"""
Creates a shape of a generic aluminum profile in any direction
::
:----- width ----:
: slot :
: :--: :
:______: :______:
| __| |__ |
| |\ \ / /| |
|_| \ \____/ / |_| ...........
| | ...... insquare
| ( ) | ......indiam :
_ | ____ | ..............:
| | / / \ \ | |
| |/ /_ _\ \| | ....
|______| |______| ....thick
Parameters:
-----------
width: float
Width of the profile, it is squared
depth: float
(depth) length of the bar, the extrusion
thick: float
Thickness of the side
slot: float
Width of the rail slot
insquare: float
Width of the inner square
indiam: float
Diameter of the inner hole. If 0, there is no hole
xtr_d: float
If >0 it will be that extra depth (length) on the direction of axis_d
xtr_nd: float
If >0 it will be that extra depth (length) on the opositve direction of
axis_d
can be V0 if pos_h = 0
axis_d : FreeCAD.Vector
Axis along the length (depth) direction
axis_w : FreeCAD.Vector
Axis along the width direction
axis_h = axis on the other width direction (perpendicular)
Axis along the width direction
pos_d: int
Location of pos along axis_d (see drawing)
* 0: start point, counting xtr_nd,
if xtr_nd == 0 -> pos_d 0 and 1 will be the same
* 1: start point, not counting xtr_nd
* 2: middle point not conunting xtr_nd and xtr_d
* 3: middle point conunting xtr_nd and xtr_d
* 4: end point, not counting xtr_d
* 5: end point considering xtr_d
pos_w: int
Location of pos along axis_w (see drawing). Symmetric, negative indexes
means the other side
* 0: at the center of symmetry
* 1: at the inner square
* 2: at the interior side of the outer part of the rail (thickness of the4 side
* 3: at the end of the profile along axis_w
pos_h: int
Same as pos_w
pos : FreeCAD.Vector
Position of point defined by pos_d, pos_w, pos_h
Attributes:
-----------
pos_o: FreeCAD.Vector
origin, at pos_d=pos_w=pos_h = 0
Shown in the drawing with a o
::
axis_h
: xtr_nd depth xtr_d
: .+..........+.........+..
: : : : :
_ : _ :__:________________:___:
|_|_:_|_| |_______________________|
| o.|........ axis_w o |....... axis_d
_|___|_ |_______________________|
|_| |_| |_______________________|
0 123 0 1 23 4 5
||| : : :: : end
|| end : : :: end not counting xtr_d
|| : : :
|| : : : middle point considering total
| thickness : : : length (xtr_nd + depth + xtr_d)
| : : :
inner square : : middle point considering depth only
: :
: start point, not counting xtr_nd
:
start point, counting xtr_nd
:______: :______:
| __| |__ |
| |\ \ / /| |
|_| \ \____/ / |_| ...........
| | ...... insquare
| ( ) | ......indiam :
_ | ____ | ..............:
| | / / \ \ | |
| |/ /_ _\ \| | ....
|______| |______| ....thick
0 1 2 3 pos_w = pos_h
"""
def __init__(self, depth,
aluprof_dict,
xtr_d=0, xtr_nd=0,
axis_d=VX, axis_w=VY, axis_h=V0,
pos_d=0, pos_w=0, pos_h=0,
pos=V0,
model_type=1, # dimensional model
name=None):
width = aluprof_dict['w']
depth = depth
thick = aluprof_dict['t']
slot = aluprof_dict['slot']
insquare = aluprof_dict['insq']
indiam = aluprof_dict['indiam']
# either axis_w or axis_h can be V0, but not both
if (axis_w is None) or (axis_w == V0):
if (axis_h is None) or (axis_h == V0):
logger.error('Either axis_w or axis_h must be defined')
logger.warning('getting a random perpendicular verctor')
axis_w = fcfun.get_fc_perpend1(axis_d)
else:
axis_w = axis_h.cross(axis_d)
if (axis_h is None) or (axis_h == V0):
axis_h = axis_d.cross(axis_w)
if name is None:
name = ('aluprof_w' + str(int(aluprof_dict['w']))
+ 'l_' + str(int(xtr_nd + depth + xtr_d)))
Obj3D.__init__(self, axis_d, axis_w, axis_h, name=name)
# save the arguments as attributes:
frame = inspect.currentframe()
args, _, _, values = inspect.getargvalues(frame)
for i in args:
if not hasattr(self, i):
setattr(self, i, values[i])
self.pos = FreeCAD.Vector(0, 0, 0)
self.position = pos
self.d0_cen = 0
self.w0_cen = 1 # symmetric
self.h0_cen = 1 # symmetric
# total length (depth)
self.tot_d = xtr_nd + depth + xtr_d
# vectors from the origin to the points along axis_d:
self.d_o[0] = V0 # origin
self.d_o[1] = self.vec_d(xtr_nd) # if xtr_nd= 0: same as d_o[0]
# middle point, not considering xtr_nd and xtr_d
self.d_o[2] = self.vec_d(xtr_nd + depth/2.)
# middle point considering xtr_nd and xtr_d
self.d_o[3] = self.vec_d(self.tot_d / 2.)
self.d_o[4] = self.vec_d(xtr_nd + depth)
self.d_o[5] = self.vec_d(self.tot_d)
# vectors from the origin to the points along axis_w:
# symmetric: negative
self.w_o[0] = V0 # center: origin
self.w_o[1] = self.vec_w(-insquare/2.)
self.w_o[2] = self.vec_w(-(width/2. - thick))
self.w_o[3] = self.vec_w(-width/2.)
# vectors from the origin to the points along axis_h:
# symmetric: negative
self.h_o[0] = V0 # center: origin
self.h_o[1] = self.vec_h(-insquare/2.)
self.h_o[2] = self.vec_h(-(width/2. - thick))
self.h_o[3] = self.vec_h(-width/2.)
# calculates the position of the origin, and keeps it in attribute pos_o
self.set_pos_o()
shp_alu_wire = fcfun.shp_aluwire_dir(width, thick, slot, insquare,
fc_axis_x=self.axis_w,
fc_axis_y=self.axis_h,
ref_x=1, # pos_o is centered
ref_y=1, # pos_o is centered
pos=self.pos_o)
# make a face of the wire
shp_alu_face = Part.Face(shp_alu_wire)
# inner hole
if indiam > 0:
hole = Part.makeCircle(indiam/2., # Radius
self.pos_o, # Position
self.axis_d) # direction
wire_hole = Part.Wire(hole)
face_hole = Part.Face(wire_hole)
shp_alu_face = shp_alu_face.cut(face_hole)
# extrude it
dir_extrud = DraftVecUtils.scaleTo(self.axis_d, self.tot_d)
shp_aluprof = shp_alu_face.extrude(dir_extrud)
self.shp = shp_aluprof
super().create_fco()
# Need to set first in (0,0,0) and after that set the real placement.
# This enable to do rotations without any issue
self.fco.Placement.Base = FreeCAD.Vector(0, 0, 0)
self.fco.Placement.Base = self.position
class LinGuideBlock (Obj3D):
"""
Integration of a ShpLinGuideBlock object into a PartLinGuideBlock
object, so it is a FreeCAD object that can be visualized in FreeCAD
Instead of using all the arguments of ShpLinGuideBlock, it will use
a dictionary
::
axis_h
:
:
____________3_____________.........................
|::| 2 |::|...bolt_l : :
| | ____1____ | | : :+linguide_h
| | | : | | | :+ block_h :
| | \ : / | | : :
|__|_____/ o \______|__|............:..........:..> axis_w
: : : : :
: : : : :
: :....4....: :.........................:
: + :
: rail_w :
: :
:......................:
+
bolt_wsep
axis_d (direction of the rail)
:
:
_________3_________ ....................
__|____:____2____:____|__ ... :
| : : | : :
| 0 : 1 : 0 | : :
| : : : | : :
| : : : | : :
| : : o 1 32 4.......................> axis_w
| + bolt_dsep : | : :
| : : : | + block_ds :
| 0 : : 0 | : :+ block_d
|_______:_________:_______|....: :
: |____:_________:____| ................:
: : : :
: :.... block_ws ....: :
: :
:....... block_w ........:
Parameters
----------
block_dict: dictionary
Dictionary with the information about the block
rail_dict: dictionary
Dictionary with the information about the rail,
it is not necessary, but if not provided, the block will not have
the rail hole
axis_d: FreeCAD.Vector
The axis along the depth (length) of the block (and rail)
axis_w: FreeCAD.Vector
The axis along the width of the block
axis_h: FreeCAD.Vector
The axis along the height of the block, pointing up
pos_d: int
Location of pos along axis_d (see drawing). Symmetric, negative indexes
means the other side
* 0: at the center (symmetric)
* 1: at the bolt hole
* 2: at the end of the smaller part of the block
* 3: at the end of the end of the block
pos_w: int
Location of pos along axis_w (see drawing). Symmetric, negative indexes
means the other side
* 0: at the center of symmetry
* 1: at the inner hole of the rail
* 2: at the bolt holes (it can be after the smaller part of the block)
* 3: at the end of the smaller part of the block
* 4: at the end of the end of the block
pos_h: int
Location of pos along axis_h (see drawing)
* 0: at the bottom (could make more sense to have 0 at the top instead
* 1: at the top of the rail hole
* 2: at the bottom of the bolt holes, if thruholes, same as 0
* 3: at the top end
* 4: at the bottom of the rail (not the block), if the rail has been
defined
pos: FreeCAD.Vector
Position at the point defined by pos_d, pos_w, pos_h
"""
def __init__(self, block_dict, rail_dict,
axis_d=VX, axis_w=V0, axis_h=VZ,
pos_d=0, pos_w=0, pos_h=0,
pos=V0,
model_type=1, # dimensional model
name=None):
self.pos = FreeCAD.Vector(0, 0, 0)
self.position = pos
if name is None:
self.name = block_dict['name'] + '_block'
if rail_dict is None:
self.rail_h = 0
self.rail_w = 0
else:
self.rail_h = rail_dict['rh']
self.rail_w = rail_dict['rw']
if (axis_w is None) or (axis_w == V0):
axis_w = axis_h.cross(axis_d)
Obj3D.__init__(self, axis_d, axis_w, axis_h, self.name)
self.block_d = block_dict['bl']
self.block_ds = block_dict['bls']
self.block_w = block_dict['bw']
self.block_ws = block_dict['bws']
self.block_h = block_dict['bh']
self.linguide_h = block_dict['lh']
self.bolt_dsep = block_dict['boltlsep']
self.bolt_wsep = block_dict['boltwsep']
self.bolt_d = block_dict['boltd']
self.bolt_l = block_dict['boltl']
linguide_h = block_dict['lh']
# save the arguments as attributes:
frame = inspect.currentframe()
args, _, _, values = inspect.getargvalues(frame)
for i in args:
if not hasattr(self, i):
setattr(self, i, values[i])
self.d0_cen = 1 # symmetric
self.w0_cen = 1 # symmetric
self.h0_cen = 0
if self.bolt_l == 0: # thruhole
self.bolt_l = self.block_h
self.thruhole = 1
else:
self.thruhole = 0
if self.rail_h == 0 or linguide_h == 0:
self.rail_h = 0
self.linguide_h = 0
self.rail_ins_h = 0
self.rail_bot_h = 0
else:
self.rail_ins_h = self.block_h - (self.linguide_h - self.rail_h)
self.rail_bot_h = self.rail_h - self.rail_ins_h
# vectors from the origin to the points along axis_d:
self.d_o[0] = V0 # Origin (center symmetric)
self.d_o[1] = self.vec_d(-self.bolt_dsep/2.)
self.d_o[2] = self.vec_d(-self.block_ds/2.)
self.d_o[3] = self.vec_d(-self.block_d/2.)
# vectors from the origin to the points along axis_w:
self.w_o[0] = V0 # Origin (center symmetric)
self.w_o[1] = self.vec_w(-self.rail_w/2.)
self.w_o[2] = self.vec_w(-self.bolt_wsep/2.)
self.w_o[3] = self.vec_w(-self.block_ws/2.)
self.w_o[4] = self.vec_w(-self.block_w/2.)
# vectors from the origin to the points along axis_h:
# could make more sense to have the origin at the top
self.h_o[0] = V0 # Origin at the bottom
self.h_o[1] = self.vec_h(self.rail_ins_h)
self.h_o[2] = self.vec_h(self.block_h - self.bolt_l)
self.h_o[3] = self.vec_h(self.block_h)
self.h_o[4] = self.vec_h(-self.rail_bot_h)
# calculates the position of the origin, and keeps it in attribute pos_o
self.set_pos_o()
# the main block
shp_mblock = fcfun.shp_box_dir(box_w=self.block_w,
box_d=self.block_ds,
box_h=self.block_h,
fc_axis_w=self.axis_w,
fc_axis_d=self.axis_d,
fc_axis_h=self.axis_h,
cw=1, cd=1, ch=0,
pos=self.pos_o)
# the extra block
shp_exblock = fcfun.shp_box_dir(box_w=self.block_ws,
box_d=self.block_d,
box_h=self.block_h,
fc_axis_w=self.axis_w,
fc_axis_d=self.axis_d,
fc_axis_h=self.axis_h,
cw=1, cd=1, ch=0,
pos=self.pos_o)
# fusion of these blocks
shp_block = shp_mblock.fuse(shp_exblock)
holes_list = []
# rail hole:
if self.rail_h > 0 and self.rail_w > 0:
wire_rail = fcfun.wire_lgrail(rail_w=self.rail_w,
rail_h=self.rail_h,
axis_w=self.axis_w,
axis_h=self.axis_h,
pos_w=0, pos_h=0,
pos=self.get_pos_h(4))
face_rail = Part.Face(wire_rail)
shp_rail = fcfun.shp_extrud_face(face=face_rail,
length=self.block_d + 2,
vec_extr_axis=self.axis_d,
centered=1)
# Part.show(shp_rail)
holes_list.append(shp_rail)
# bolt holes:
for d_i in (-1, 1): # positions of the holes along axis_d
for w_i in (-2, 2): # positions of the holes along axis_w
shp_bolt = fcfun.shp_cylcenxtr(r=self.bolt_d/2.,
h=self.bolt_l,
normal=axis_h,
ch=0,
xtr_top=1,
xtr_bot=self.thruhole,
pos=self.get_pos_dwh(d_i, w_i, 2))
holes_list.append(shp_bolt)
shp_holes = fcfun.fuseshplist(holes_list)
shp_block = shp_block.cut(shp_holes)
shp_block = shp_block.removeSplitter()
self.shp = shp_block
super().create_fco(self.name)
# Need to set first in (0,0,0) and after that set the real placement.
# This enable to do rotations without any issue
self.fco.Placement.Base = FreeCAD.Vector(0, 0, 0)
self.fco.Placement.Base = self.position
class LinGuideRail (Obj3D):
""" Creates a shape of a linear guide rail
The linear guide rail has a dent, but it is just to show the shape,
the dimensions are not exact
::
axis_h
:
:
:
:bolth_d
....:.+...
: : :
___:____3____:___...................
| : : | :bolth_h :
| :....2....: |....: :
\ : : / A little dent to see that it is a rail
/ : 1 : \ ..... :
| : : | : :+ rail_h
| : : | + rail_h/2. :
| : : | : :
|______:_o_:______|.....:...........:...... axis_w
: : 0 : 1 2
: : : :
: :...: :
: bolt_d :
: :
:.................:
+
rail_w
bolt_wsep: if 0, only one hole (common)
...+...
: :
_________o_________.....................
|: :| : :
|: :| :+ boltend_sep :
|: ( ) 1 ( ) :|---- :
|: :| : :
|: :| :+ bolt_lsep :
|: :| : :
|: :| : :+ rail_d
|: ( ) :|---- :
|: 2 :| only one bolt (either case, not like this
|: :| :
|: :| :
|: :| :
|: (3) :| :
|: :| :
|: :| :
|:_______4_______:|.....................:...axis_w
:
:
:
:
v
axis_d
Parameters:
-----------
rail_d : float
Length (depth) of the rail
rail_w : float
Width of the rail
rail_h : float
Height of the rail
bolt_lsep : float
Separation between bolts on the depth (length) dimension
bolt_wsep : float
Separation between bolts on the width dimension,
* 0: there is only one bolt
bolt_d : float
Diameter of the hole for the bolt
bolth_d : float
Diameter of the hole for the head of the bolt
bolth_h : float
Height of the hole for the head of the bolt
boltend_sep : float
Separation on one end, from the bolt to the end
* 0: evenly distributed
axis_d : FreeCAD.Vector
The axis along the depth (length) of the rail
axis_w : FreeCAD.Vector
The axis along the width of the rail
axis_h : FreeCAD.Vector
The axis along the height of the rail, pointing up
pos_d : int
Location of pos along axis_d (see drawing)
* 0: at the beginning of the rail
* 1: at the first bolt hole
* 2: at the middle of the rail (not necessary at a bolt hole)
* 3: at the last bolt hole
* 4: at the end of the rail
pos_w : int
Location of pos along axis_w (see drawing). Symmetric, negative indexes
means the other side
* 0: at the center of symmetry
* 1: at the bolt holes (only make sense if there are 2 bolt holes)
otherwise it will be like pos_w = 0
* 2: at the end of the rail along axis_w
pos_h : int
Location of pos along axis_h (see drawing)
* 0: at the bottom
* 1: at the middle (it is not a specific place)
* 1: at the bolt head
* 3: at the top end
pos : FreeCAD.Vector
Position at the point defined by pos_d, pos_w, pos_h
"""
def __init__(self, rail_d,
rail_dict,
boltend_sep=0,
axis_d=VX, axis_w=V0, axis_h=VZ,
pos_d=0, pos_w=0, pos_h=0,
pos=V0,
model_type=1, # dimensional model,
name=None):
if name is None:
self.name = rail_dict['name']
else:
self.name = name
if boltend_sep == 0:
boltends = 0
elif boltend_sep < 0:
boltends = rail_dict['boltend_sep']
else:
boltends = boltend_sep
rail_w = rail_dict['rw'],
rail_h = rail_dict['rh'],
bolt_lsep = rail_dict['boltlsep'],
bolt_wsep = rail_dict['boltwsep'],
bolt_d = rail_dict['boltd'],
bolth_d = rail_dict['bolthd'],
bolth_h = rail_dict['bolthh'],
if (axis_w is None) or (axis_w == V0):
axis_w = axis_h.cross(axis_d)
Obj3D.__init__(self, axis_d, axis_w, axis_h, self.name)
# save the arguments as attributes:
frame = inspect.currentframe()
args, _, _, values = inspect.getargvalues(frame)
for i in args:
if not hasattr(self, i):
setattr(self, i, values[i])
self.d0_cen = 0