Abstract
A method for making a bit includes a step of preparing a bar of pre-set length, the bar having two lateral portions on two opposite sides thereof, and two engaging faces formed on each of the top and the bottom of the bar, the engaging faces being in contact with at least two face insides of a hexagonal hole of an accommodation tool, a distance X1 defined between the two engaging faces, a distance Y1 defined between the two lateral portions 11, X11.2 Y1; a step of forming each of two ends of the bar into a function end, a connection portion being formed between the two function ends, and a step of obtaining the bit. The bit is compact and light weight.
Claims
1. A method for making a bit, comprising: a step of preparing: preparing a bar of pre-set length, the bar having two lateral portions on two opposite sides thereof, and two engaging faces formed on each of a top and a bottom of the bar, the engaging faces connected to the two lateral portions and adapted to be in contact with at least two face insides of a hexagonal hole of an accommodation tool, a peak formed on a connection between the two engaging faces of each of the top and the bottom of the bar, a distance X1 defined between the two peaks, a distance Y1 defined between the two lateral portions, X11.2 Y1; a step of forming function ends: forming each of two ends of the bar into a function end, a connection portion formed between the two function ends, and a step of obtaining a product: the bit being obtained.
2. The method as claimed in claim 1, wherein the step of forming function ends further comprises a step of making notches, wherein multiple notches are make in the connection portion.
3. A method for making a bit, comprising: a step of preparing: preparing a bar of pre-set length, the bar having two lateral portions on two opposite sides thereof, each of the two lateral portions having two elongate sides and an auxiliary engaging face extending inclined from each of the two elongate sides of each of the two lateral portions, a connection face connected between the two auxiliary faces on each of a top and a bottom of the bar, a width of each of the auxiliary engaging faces being smaller than that of each of insides of a hexagonal hole of an accommodation tool, a distance X2 defined between the connection faces, a distance Y2 defined between the two lateral portions, X21.2 Y2; a step of forming function ends: forming each of two ends of the bar into a function end, a connection portion formed between the two function ends, and a step of completing a product: the bit being obtained.
4. The method as claimed in claim 1, wherein the step of forming function ends further comprises a step of making notches, wherein multiple notches are make in the connection portion.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] FIG. 1 is a perspective view to show the conventional bit;
[0032] FIG. 2 shows the conventional bit, a screw and a tool;
[0033] FIG. 3 is a perspective view to show another conventional bit;
[0034] FIG. 4 is a cross sectional view of the conventional bit in FIG. 3;
[0035] FIG. 5 shows the conventional bit and a tool box;
[0036] FIG. 6 shows multiple conventional bits and a tool box;
[0037] FIG. 7 shows that the multiple conventional bits are received in the tool box of FIG. 6;
[0038] FIG. 8 shows multiple conventional bits are received in a handle of a tool;
[0039] FIG. 9 shows the conventional bit having a distinguishable portion;
[0040] FIG. 10 shows another conventional bit having a distinguishable portion;
[0041] FIG. 11 shows the steps of the method for making the conventional bit;
[0042] FIG. 12 shows the conventional bit made by the method in FIG. 11;
[0043] FIG. 13 shows the steps of the method of the present invention;
[0044] FIG. 14 shows the bar in the step of preparing of the method of the present invention;
[0045] FIG. 15 shows that the cross sectional area of the bit of the present invention accommodated in an accommodation tool;
[0046] FIG. 16 shows the relationship of the distances X1 and Y1 of the bit of the present invention;
[0047] FIG. 17 shows the bit made by the method of the present invention;
[0048] FIG. 18 shows that the connection of the bit of the present invention is accommodated in the accommodation tool, wherein the space is saved;
[0049] FIG. 19 shows that notches are defined in the connection portion of the bit of the present invention;
[0050] FIG. 20 shows the notches of a 50 mm bit made by the method of the present invention;
[0051] FIG. 21 shows the steps of the second embodiment of the method of the present invention;
[0052] FIG. 22 shows the bar in the step of preparing of the method in FIG. 21;
[0053] FIG. 23 shows that the cross sectional area of the bit of the present invention accommodated in an accommodation tool;
[0054] FIG. 24 shows the relationship of the distances X2 and Y2 of the bit of the present invention;
[0055] FIG. 25 shows the bit made by the method of the present invention in FIG. 21;
[0056] FIG. 26 shows that notches are defined in the connection portion of the bit made by the method in FIG. 21, and
[0057] FIG. 27 shows the notches of a 50 mm bit made by the method in FIG. 21.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0058] Referring to FIGS. 13 to 16, the method of the present invention comprises the following steps:
[0059] a step of preparing: preparing a bar 1 of pre-set length as shown in FIG. 14, the bar 1 having two lateral portions 11 on two opposite sides thereof, and two engaging faces 12 formed on each of a top and a bottom of the bar 1, the engaging faces 12 connected to the two lateral portions 11 and adapted to be in contact with at least two face insides 42 of a hexagonal hole 41 of an accommodation tool 40 as shown in FIG. 15, a peak formed on a connection between the two engaging faces 12 of each of the top and the bottom of the bar 1, a distance X1 defined between the two peaks, a distance Y1 defined between the two lateral portions 11, X11.2 Y1 as shown in FIG. 16;
[0060] a step of forming function ends: forming each of two ends of the bar 1 into a function end 131/132 as shown in FIG. 17, a connection portion 14 formed between the two function ends 131, 132, and
[0061] a step of obtaining a product: the bit 20 being obtained.
[0062] The engaging faces 12 of the connection portion 14 of the bit 20 of the present invention are in contact with the face insides 42 of the hexagonal hole 41 of the accommodation tool 40 as shown in FIG. 15. The relationship of the distance X1 and the distance Y1 is defined as X11.2 Y1 as shown in FIG. 16, so that the strength of the bit 20 is strong enough while the bit 20 is compact, so that spaces 13 are saved when used with hexagonal hole 41 of the accommodation tool 40 as shown in FIG. 18. The saved spaces 13 means that the volume of the bit 20 is smaller than the conventional bits, so that the weight of the bit 20 is reduced. Besides, because the lateral portions 11 are big enough which can be used as a distinguishable portion and the manufacturing steps are easier than the conventional methods. The engaging faces 12 are able to contact the insides 42 of the hexagonal hole 41 of the accommodation tool 40 so that the bit 20 can be used with the conventional accommodation tool such as a socket. The bit 20 does not need to make a hollow head to reduce its weight. Even the same number of the bits 20 are received in a tool box, the total weight is reduced.
[0063] As shown in FIG. 19, the step of forming function ends further comprises a step of making notches, wherein multiple notches 15 are make in the connection portion 14. If the bit is a 50 mm bit 21, the notches 151 are made as shown in FIG. 20 so as to accommodate the positioning beads (not shown) of a power tool (not shown).
[0064] FIG. 21 shows the second embodiment of the method for making a bit, the method comprises the following steps:
[0065] a step of preparing: preparing a bar 1 of pre-set length, the bar 1 having two lateral portions 12 on two opposite sides thereof as shown in FIG. 22, each of the two lateral portions 12 having two elongate sides and an auxiliary engaging face 121 extending inclined from each of the two elongate sides of each of the two lateral portions 12, a connection face 122 connected between the two auxiliary faces 121 on each of a top and a bottom of the bar 1, a width of each of the auxiliary engaging faces 121 being smaller than that of each of insides 42 of a hexagonal hole 41 of an accommodation tool 40 as shown in FIG. 23, a distance X2 defined between the connection faces 122, a distance Y2 defined between the two lateral portions 12, X21.2 Y2 as shown in FIG. 24;
[0066] a step of forming function ends: forming each of two ends of the bar 1 into a function end 131/132 as shown in FIG. 25, a connection portion 14 formed between the two function ends 131, 132, and
[0067] a step of completing a product: the bit 20 being obtained.
[0068] Preferably, the step of forming function ends further comprises a step of making notches, wherein multiple notches 15 are make in the connection portion 14 as shown in FIG. 26. If the bit is a 50 mm bit 21, the notches 151 are made as shown in FIG. 27 so as to accommodate the positioning beads (not shown) of a power tool (not shown).
[0069] The relationship of the distance X2 and the distance Y2 is defined as X21.2 Y2, so that the strength of the bit 20 is strong enough while the bit 20 is compact, so that spaces 13 between the bit 20 and the insides of the hexagonal hole 41 of the accommodation tool 40 are saved as shown in FIG. 23. The saved spaces 13 means that the volume of the bit 20 is smaller than the conventional bits, so that the weight of the bit 20 is reduced.
[0070] While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
