CN116944391A - Screw thread rolling plate set, tooth module and screw - Google Patents
Screw thread rolling plate set, tooth module and screw Download PDFInfo
- Publication number
- CN116944391A CN116944391A CN202210515773.8A CN202210515773A CN116944391A CN 116944391 A CN116944391 A CN 116944391A CN 202210515773 A CN202210515773 A CN 202210515773A CN 116944391 A CN116944391 A CN 116944391A
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- tooth
- screw
- molding
- cutting edge
- shaped cutting
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- 238000005096 rolling process Methods 0.000 title claims abstract description 41
- 238000000465 moulding Methods 0.000 claims abstract description 95
- 238000005520 cutting process Methods 0.000 claims abstract description 57
- 238000007493 shaping process Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000004378 air conditioning Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 15
- 238000010079 rubber tapping Methods 0.000 description 15
- 238000007599 discharging Methods 0.000 description 12
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000002025 wood fiber Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
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- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Transmission Devices (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
The invention provides a screw thread rolling plate set, which is used for reducing the manufacturing cost of screws and solving the problem of overlarge drilling resistance of screw taps. Comprising the following steps: the first dental plate is provided with a screw forming part on one surface, the screw forming part is provided with a plurality of forming grooves, the first dental plate is provided with a molding part, the molding part is positioned on the extending path of at least one forming groove and comprises a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts, each convex arc tooth part is provided with a plurality of tooth peaks, each V-shaped cutting edge part is provided with a plurality of edge peaks, and each tooth peak and each edge peak are intersected with the extending direction of the plurality of forming grooves; and the second dental plate can move relatively in parallel and is used for forming a plurality of screw teeth on a rod body clamped together. And a tooth module for the screw thread rolling plate group and the formed screw.
Description
Technical Field
The present invention relates to a screw thread rolling plate set, and more particularly, to a screw thread rolling plate set capable of forming serrated threads, a tooth module having serrated teeth, and a screw formed by the screw thread rolling plate set.
Background
The wood drilling screw is formed by drilling the pointed cone end of the screw into the surface of the wooden workpiece and matching with the thread of the screw, and continuously cutting off and discharging wood fibers of the wooden workpiece, thereby tightly fixedly connecting the screw and the wooden workpiece. In order to reduce the resistance of the screw to penetration into the wooden workpiece, the existing screw surface has a small section of V-shaped groove extending axially from the pointed end of the screw in the direction of the tap to span across the plurality of threads. Thus, the V-shaped groove can reduce the resistance of the screw to drilling into the wooden workpiece.
In general, when the screw is formed, the screw rod body is clamped between two thread rolling plates, and the two thread rolling plates are used for rolling threads on the screw rod body through anti-parallel movement of the two thread rolling plates on the predetermined thread forming threads on the clamping surface of the screw rod body. After the screw thread is formed, the V-shaped groove is milled, that is, when the existing screw is manufactured, the processing must be performed for a plurality of times, which causes the increase of cost. In addition, the V-shaped groove of the existing screw still has insufficient effect of reducing the resistance of the screw to drilling into the wooden workpiece.
Disclosure of Invention
In order to solve the above problems, the present invention provides a screw thread rolling plate set, which can mold screws with better cutting force at one time to improve the production efficiency.
The present invention provides a tooth module which can be installed on a tooth twisting plate, and can simultaneously mold the teeth of the screw into a saw tooth shape when the screw is molded, so that the screw has better cutting force.
It is a further object of the present invention to provide a screw having serrated threads that reduce the resistance of the screw to penetration into a workpiece.
Throughout this disclosure, directional or approximate terms, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., refer primarily to the direction of the drawings and are used merely to aid in the description and understanding of various embodiments of the present invention and are not intended to be limiting.
The use of the terms "a" or "an" for the components and members described throughout this disclosure is for convenience only and provides a general sense of the scope of the invention; it should be understood that the present invention includes one or at least one, and that the singular concept also includes the plural unless it is obvious that it is meant otherwise.
The terms "coupled," "assembled," or "assembled" as used throughout this disclosure, generally include those that are separated without damaging the components after connection, or that are not separated after connection, and may be selected by one skilled in the art based on the materials or assembly requirements of the components to be connected.
The screw thread rolling plate group of the invention comprises: the first dental lamina is provided with a thread forming part on one surface, the thread forming part is provided with a plurality of forming grooves, the first dental lamina is provided with a tip forming part positioned below the thread forming part, the first dental lamina is provided with a shaping part positioned on the extending path of at least one forming groove, the shaping part comprises a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts, each convex arc tooth part is provided with a plurality of tooth peaks, each V-shaped cutting edge part is provided with a plurality of edge peaks, and each tooth peak and each edge peak are intersected with the extending direction of at least one forming groove; and a second dental plate, one surface of the second dental plate is provided with a screw tooth forming part and a tip forming part corresponding to the first dental plate, and the first dental plate and the second dental plate can relatively move in parallel and are used for forming a plurality of screw teeth on a rod body clamped together.
The tooth module of the invention has a molding part on one surface, the molding part comprises a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts, each convex arc tooth part is provided with a plurality of tooth peaks, and each V-shaped cutting edge part is provided with a plurality of edge peaks.
The screw of the present invention comprises: a rod body; the plurality of threads are connected and spirally wound on the rod body to form threads, and the periphery of at least one thread is provided with a plurality of concave arc saw tooth parts and a plurality of cut-out parts.
Therefore, when the screw thread rolling plate set is used for rolling the formed screw thread through the first tooth plate and the second tooth plate, a plurality of concave arc saw teeth and a plurality of V-shaped cuts can be molded on the screw thread at the same time, thereby the screw with the concave arc saw teeth and the plurality of V-shaped cuts can be molded at one time, and the secondary processing is not needed for milling the V-shaped groove, and the effect of better production efficiency can be realized.
In addition, the molding part can be positioned on the tooth module so as to be detachably combined with the combining groove of the first dental plate through the tooth module. Therefore, the screw teeth to be formed can be arranged in a relatively aligned or staggered manner on the concave arc saw tooth parts of two adjacent screw teeth according to the screw teeth distribution structure to be formed, and the tooth modules can be replaced according to different requirements, so that the effect of convenient processing can be realized.
In addition, the screw can cut the wooden workpiece and other workpieces through the concave arc saw teeth and the V-shaped notches, so that the tapping resistance of the screw can be reduced. And the wood fiber wound on the screw can be cut off through the plurality of concave arc saw teeth, so that the cutting resistance of the plurality of V-shaped cuts can be reduced, and the effect of smoothly tapping and drilling into a workpiece can be realized.
Wherein, a plurality of tooth peaks of each convex arc tooth part extend in parallel with each other. Therefore, the screw teeth can be molded with the same concave arc saw tooth effect.
Wherein, a plurality of blade peaks of each V-shaped cutting blade part extend mutually parallel. Thus, the effect of forming consistent V-shaped cuts on the screw teeth can be achieved.
Wherein, the convex arc tooth parts and the V-shaped cutting edge parts are mutually arranged at intervals. Therefore, the periphery of one screw tooth can be formed into the adjacent concave arc saw tooth parts and the notch parts, and the plurality of concave arc saw tooth parts and the plurality of notch parts can be matched to reduce the tapping resistance of the screw, and the screw has the effect of smoothly tapping and drilling into a workpiece.
The convex arc tooth part is provided with a plurality of convex arc tooth parts, wherein the convex arc tooth parts are arranged on the cross section of the convex arc tooth part, and the plurality of tooth peaks are positioned in a virtual arc line. Therefore, the convex arc tooth part can mold the periphery of at least one screw tooth into a concave arc saw tooth.
The V-shaped cutting edge part has cross section with several peaks in the same virtual horizontal line. Therefore, the V-shaped cutting edge part can form V-shaped cuts with consistent depth on the periphery of the screw teeth.
Wherein, on the section of the molding part, the plurality of blade peaks are lower than the plurality of tooth peaks. Thus, each tooth peak of the convex arc tooth part can be protruded relative to the plurality of blade peaks, so that the convex arc tooth part can truly form a concave arc on the periphery of the screw tooth.
The molding part is provided with at least a first molding row and a second molding row, wherein the first molding row and the second molding row are respectively aligned with at least one molding groove, and the first molding row and the second molding row are respectively provided with a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts which are mutually arranged at intervals. Therefore, the molding part can be used for molding a plurality of concave arc saw tooth parts and a plurality of notch parts for at least two screws, so that the tapping resistance can be further reduced, and the effect that the screw smoothly taps into a workpiece is achieved.
Wherein, the convex arc tooth part and the V-shaped cutting edge part of the first shaping row are respectively staggered with the convex arc tooth part and the V-shaped cutting edge part of the second shaping row. Thus, the concave arc saw tooth part and the notch part which are staggered with each other can be formed on at least two threads.
Wherein the first molding row and the second molding row are respectively positioned in adjacent molding grooves. Therefore, a plurality of concave arc saw tooth parts and a plurality of notch parts can be formed on at least two adjacent screw teeth respectively.
The screw tooth forming parts of the first dental plate and the second dental plate are respectively provided with a plurality of arc grooves extending upwards and downwards, the extending directions of the arc grooves are staggered with the forming grooves of the first dental plate and the second dental plate, and the arc grooves are concavely arranged on the surfaces of the first dental plate and the second dental plate outside the forming grooves. Therefore, a plurality of arc convex ribs can be formed at the bottoms of a plurality of threads of the screw, and the resistance of the screw when tapping into a wooden workpiece can be reduced through the plurality of arc convex ribs, so that the screw can smoothly tap into the workpiece.
The molding part is positioned on the surface of a tooth module, the first tooth plate is provided with a combination groove, the combination groove is communicated with the screw tooth molding part, and the tooth module is detachably positioned in the combination groove. Therefore, the tooth module can be replaced according to different requirements, and the effect of facilitating processing can be achieved.
Wherein, the screw is arranged at intervals on the concave arc saw tooth parts and the notch parts on a screw tooth. Therefore, the concave arc saw tooth part and the notch part can be matched to reduce the tapping resistance of the screw, and the screw has the effect of enabling the screw to smoothly attack the workpiece.
The periphery of at least two threads of the screw is respectively provided with a plurality of concave arc saw teeth parts and a plurality of notch parts, and the concave arc saw teeth parts and the notch parts of the two threads are staggered. Therefore, the staggered concave arc saw tooth parts and the staggered notch parts can further reduce the tapping resistance, and the effect of enabling the screw to smoothly attack the workpiece is achieved.
Drawings
Fig. 1: a screw thread rolling plate component of the first embodiment of the invention is a split perspective view;
fig. 2: a top view of a first dental plate of a first embodiment of the present invention;
fig. 3: a side view of a first dental plate of a first embodiment of the present invention;
fig. 4: a cross-sectional view taken along line A-A of fig. 2;
fig. 5: a perspective view of a molding part according to a first embodiment of the present invention;
fig. 6: a cross-sectional view taken along line B-B of fig. 5;
fig. 7: the screw thread rolling plate assembly of the first embodiment of the invention is a schematic diagram of screw thread molding;
fig. 8: the invention relates to a screw partial enlarged view made of a screw thread rolling plate group in a first embodiment;
fig. 9: a screw thread rolling plate component according to a second embodiment of the present invention is a split perspective view;
fig. 10: a partial enlarged view of C of fig. 9;
fig. 11: a perspective view of a molding part according to a second embodiment of the present invention;
fig. 12: a cross-sectional view taken along line D-D of fig. 11;
fig. 13: the invention provides a screw part enlarged view made of a screw thread rolling plate group in a second embodiment.
Description of the reference numerals
1 first dental plate
1a feeding end
1b discharge end
11,21 screw forming part
12,22 forming groove
13,23 anti-slip pattern
14,24 tip forming section
15,25 chip removing groove
16,18 moulding section
161,181 convex arc tooth parts
161a tooth peak
162, 182V-shaped cutting edge portion
162a, edge peak
17 combination groove
18a first shaping column
18b second shaping column
19,26 arc grooves
2 second dental plate
3 rod body
31 screw thread
4,5 screw
41,51 rod body
41a attack end
42,52 screw thread
43,53 concave arcuate saw tooth portions
44,54 cut-out portions
55 arc rib
56 chip-holding groove
T1 arc line
T2 horizontal line
H tooth module
θ1 first included angle
θ2, the second included angle.
Detailed Description
In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below; in addition, the same symbols in different drawings are denoted as the same, and the description thereof will be omitted.
Referring to fig. 1,2 and 3, a first embodiment of a screw thread rolling plate set according to the present invention includes a first thread rolling plate 1 and a second thread rolling plate 2, wherein the first thread rolling plate 1 and the second thread rolling plate 2 are arranged on a thread rolling machine (not shown) to jointly clamp a rod 3, and the first thread rolling plate 1 and the second thread rolling plate 2 move relatively in parallel, so as to roll the rod 3 and form a screw with a plurality of threads 31 on the circumferential surface of the rod 3. In the present embodiment, the first dental plate 1 is fixed, and the second dental plate 2 is described as being parallel to the first dental plate 1. However, the first dental plate 1 may be moved in parallel with respect to the second dental plate 2, and the present invention is not limited thereto.
Referring to fig. 1 and 2, the first dental plate 1 has a feeding end 1a and a discharging end 1b opposite to each other, the first dental plate 1 has a screw forming portion 11 on a surface between the feeding end 1a and the discharging end 1b, the screw forming portion 11 has a plurality of forming grooves 12, the forming grooves 12 extend from the feeding end 1a to the discharging end 1b, and the forming grooves 12 are inclined from the feeding end 1a toward the discharging end 1b, and the forming grooves 12 are equidistantly arranged. Thus, the thread forming part 11 can be used for forming a plurality of threads 31 which are spirally wound around the circumferential surface of the rod body 3.
The thread forming portion 11 may have a plurality of anti-slip threads 13, the plurality of anti-slip threads 13 may be disposed on the surface of the first dental plate 1 having the plurality of forming grooves 12 at equal intervals, and the extending directions of the plurality of anti-slip threads 13 may be staggered with the extending directions of the plurality of forming grooves 12, and the staggering may be perpendicular or non-perpendicular. In this embodiment, the extending directions of the plurality of anti-slip patterns 13 and the extending directions of the plurality of forming grooves 12 are not perpendicular to each other, and the plurality of anti-slip patterns 13 may be disposed side by side from the feeding end 1a toward the discharging end 1b, so that a friction force to the rod 3 may be formed by the plurality of anti-slip patterns 13, and the rod 3 may be ensured to roll from the feeding end 1a of the first dental plate 1 toward the discharging end 1b during rubbing the rod 3.
With continued reference to fig. 2, 3 and 4, the surface between the feeding end 1a and the discharging end 1b of the first dental plate 1 further has a tip forming portion 14, the tip forming portion 14 is configured to gradually reduce the lower end of the rod 3 to form a tapered screw tap end, the tip forming portion 14 is adjacent to the lower portion of the screw forming portion 11, the tip forming portion 14 protrudes from the surface of the first dental plate 1 compared with the screw forming portion 11, the tip forming portion 14 gradually protrudes from the feeding end 1a toward the discharging end 1b, such that the tip forming portion 14 forms a first angle θ1 (as shown in fig. 3) with respect to the screw forming portion 11, and the tip forming portion 14 is inclined with respect to the screw forming portion 11 by a second angle θ2 (as shown in fig. 4). Thus, the tip forming portion 14 can gradually shrink one end of the rod 3 to form a taper shape, so that the rod 3 can be formed with the tapping end of the screw. In addition, the tip forming part 14 may also have the plurality of anti-slip grooves 13 to form friction force to the rod 3 adjacent to the end position so that the rod 3 can be easily rolled.
Referring to fig. 2, the first dental plate 1 has a chip groove 15, the chip groove 15 is located below the tip forming portion 14, and the chip groove 15 is adjacent to the tip forming portion 14. Specifically, the junk slots 15 are recessed on the surface of the first dental plate 1 relative to the tip forming portion 14, so that the rod 3 rubbed by the tip forming portion 14 can enter the junk slots 15.
Referring to fig. 1 and 2, the first dental plate 1 has a molding portion 16, and the molding portion 16 is formed into a saw-tooth shape by using a screw thread at a screw-in end. The molding portion 16 is located on the extending path of the at least one molding groove 12, preferably, the molding portion 16 may be located adjacent to the discharge end 1b of the first dental plate 1, so as to reshape the saw teeth of the molded screw teeth 31 by the molding portion 16.
Referring to fig. 5 and 6, specifically, the molding portion 16 includes a plurality of convex arc teeth 161 and a plurality of V-shaped cutting edges 162 arranged at intervals, each convex arc teeth 161 has a plurality of teeth 161a, each teeth 161a may extend parallel to each other, and on a cross section of the convex arc teeth 161, the plurality of teeth 161a may be located in a virtual arc T1. Thus, the convex arc tooth 161 can be used to form a concave arc saw tooth on the periphery of at least one screw tooth 31. Each V-shaped cutting edge 162 has a plurality of lands 162a, and each of the lands 162a may extend parallel to each other. Thus, the V-shaped cutting edge 162 may be used to form a plurality of V-shaped notches at the corresponding position of the periphery of at least one screw thread 31, and the plurality of cutting edges 162a may be located at a virtual horizontal line T2 on the cross section of the V-shaped cutting edge 162, so that the V-shaped cutting edge 162 may form V-shaped notches with uniform depth on the periphery of the screw thread 31. Preferably, in the cross section of the molding portion 16, the plurality of crests 162a may be lower than the plurality of crests 161a (as shown in fig. 6), so that each crest 161a of the convex arc-shaped tooth portion 161 may protrude with respect to the plurality of crests 162a, and the convex arc-shaped tooth portion 161 may be formed into a plurality of concave arcs on the periphery of the screw tooth 31.
The extending direction of each tooth peak 161a and each blade peak 162a intersects with the extending direction of the plurality of forming grooves 12. Thus, at least one screw 31 formed by the forming grooves 12 can continuously pass through the forming portion 16, so that the plurality of convex arc tooth portions 161 and the plurality of V-shaped cutting edge portions 162 can form the periphery of the formed screw 31. In addition, the number of the tooth peaks 161a of the convex curved tooth portion 161 and the number ratio of the blade peaks 162a of the V-shaped cutting blade portion 162 may be 2:1 to 3:1. that is, the convex curved teeth 161 may have relatively dense peaks 161a to form a continuous serration to the circumference of the screw 31. Instead, the V-shaped cutting edge 162 may have a relatively sparse crest 162a to form a plurality of discrete V-shaped cuts to the periphery of the screw 31. Thus, the molding portion 16 can be used to mold a plurality of concave arc saw teeth and a plurality of V-shaped cuts (as shown in fig. 8) on at least one screw tooth 31, so that the concave arc saw teeth and the V-shaped cuts can be used to cut a workpiece rapidly, thereby reducing the tapping resistance of the screw. And when the invention is used for wooden workpieces, the concave arc saw teeth can be used for cutting wood fibers wound on screws so as to reduce the resistance of the V-shaped notch cutting fibers.
Referring to fig. 5, 6 and 7, the present invention is not limited to the arrangement sequence of the convex arc teeth 161 and the V-shaped cutting edges 162, for example, in an embodiment, the convex arc teeth 161 and the V-shaped cutting edges 162 may be spaced apart from each other. In this embodiment, the molding portion 16 may sequentially form a V-shaped cutting edge portion 162, a convex arc tooth portion 161, a V-shaped cutting edge portion 162, and a convex arc tooth portion 161 from the feeding end 1a toward the discharging end 1 b. In addition, the number of the plurality of convex arc teeth 161 and the number of the plurality of V-shaped cutting edge portions 162 may be the same, so that the plurality of sets of concave arc teeth formed on the screw teeth by the plurality of convex arc teeth 161 may be geometrically symmetrically distributed in the radial direction (as shown in fig. 7).
In addition, the total length of the plurality of convex curved teeth 161 and the plurality of V-shaped cutting edge 162, which are arranged at intervals, corresponds to the length of the screw thread wound around the rod 3 by one turn. That is, when the molding portion 16 rolls one round, the molding portion 16 can mold one round of threads on the rod 3. The extension length of each crest 161a and each crest 162a may correspond to a plurality of threads of the thread 31 to be molded on the rod 3 to mold a plurality of the threads 31, and the present invention is not limited thereto.
The molding portion 16 may be integrally formed on the surface of the first dental plate 1, or in this embodiment, the molding portion 16 is located on the surface of a tooth module H, the first dental plate 1 has a coupling groove 17, and the coupling groove 17 may be a through groove, and the coupling groove 17 communicates with the screw forming portion 11. The tooth module H is removably positioned in the coupling groove 17. In this way, when the molding portion 16 is worn, the tooth module H can be directly removed to replace the molding portion 16, without replacing the entire first dental plate 1, which can have a cost-saving effect.
With continued reference to fig. 1, a screw forming portion 21 is provided on a surface of the second dental plate 2, and the screw forming portion 21 of the second dental plate 2 and the screw forming portion 11 of the first dental plate 1 jointly clamp the rod 3 to rub and form a circumferential surface of the rod 3. The screw forming portion 21 has a plurality of forming grooves 22, the plurality of forming grooves 22 extend at equal intervals, the inclination of the plurality of forming grooves 22 is the same as the inclination of the plurality of forming grooves 12 of the first dental plate 1, and the inclination directions are opposite, so as to form screw threads spirally encircling the circumference of the rod body 3, which is understood by those skilled in the art, and the invention is not repeated herein. The thread forming section 21 may have a plurality of anti-slip grooves 23, the extending direction of the anti-slip grooves 23 is staggered with the extending direction of the forming grooves 22, and the thread forming section 21 may have a tip forming section 24 and a chip groove 25, and the tip forming section 24 and the chip groove 25 are aligned with the tip forming section 14 and the chip groove 15 of the first dental plate 1.
Referring to fig. 7, when the screw is used to form a screw, the rod 3 enters from the feeding end 1a and is clamped between the first dental plate 1 and the second dental plate 2, and the rod 3 may have a preformed cap. The second dental plate 2 moves in parallel relative to the first dental plate 1 to drive the rod body 3 to roll from the feeding end 1a to the discharging end 1b, and the plurality of threads 31 are formed on the circumferential surface of the rod body 3 by the thread forming parts 11 and 21. And the scraps and escaped materials in the rubbing process can be discharged from the chip grooves 15 and 25. When the rod 3 rolls to the molding portion 16, a plurality of concave arc teeth 161 and a plurality of V-shaped cutting edges 162 of the molding portion 16 are sequentially arranged, a plurality of concave arc teeth and a plurality of V-shaped notches are sequentially formed on the periphery of at least one screw 31, and the rod 3 is separated from the discharge end 1b to form a screw.
Referring to fig. 8, a screw 4 formed by the screw thread rolling plate set of the present invention includes a rod 41 and a plurality of threads 42, wherein the threads 42 are connected and spirally wound on the rod 41 to form threads. The at least one screw thread 42 has a plurality of concave-arc saw-tooth parts 43 and a plurality of cut-out parts 44, and the concave-arc saw-tooth parts 43 and the cut-out parts 44 are positioned at the periphery of the at least one screw thread 42. On a screw thread 42, the concave arc saw teeth portions 43 and the notch portions 44 may be disposed at intervals, so that the concave arc saw teeth portions 43 are geometrically symmetrically distributed in a radial direction (as shown in fig. 7). Thus, when the screw 4 is screwed into a workpiece such as wooden, a predetermined screwing angle can be maintained, and the screw has excellent stability. In the present embodiment, the second and third screw threads 42 starting from the tapping end 41a of the screw 4 each have the plurality of concave arc saw-tooth portions 43 and the plurality of notch portions 44. In addition, the concave curved saw tooth portions 43 of the two adjacent screw teeth 42 can be opposite to each other, so that resistance can be reduced when the screw 4 is initially tapped into a workpiece such as wood, and the subsequent screw teeth 42 can be smoothly driven to be screwed in.
Referring to fig. 9, which is a second embodiment of the screw thread rolling die set of the present invention, the present embodiment is substantially the same as the first embodiment described above, in this embodiment, the first thread rolling die 1 has a molding portion 18, and the width of the molding portion 18 is larger than that of the molding portion 16 of the first embodiment, so that the molding portion 18 can be located at least on the extending path of the two molding grooves 12. In detail, the molding portion 18 has at least a first molding row 18a and a second molding row 18b, the first molding row 18a and the second molding row 18b are respectively aligned with at least one molding slot 12, the molding slots 12 aligned with the first molding row 18a and the second molding row 18b can be adjacent to each other, so that the molding portion 18 can mold at least two adjacent threads 31.
Referring to fig. 11 and 12, the first molding row 18a and the second molding row 18b respectively have a plurality of convex tooth portions 181 and a plurality of V-shaped cutting edge portions 182 arranged at intervals, that is, the convex tooth portions 181 and the V-shaped cutting edge portions 182 of the first molding row 18a are respectively offset from the convex tooth portions 181 and the V-shaped cutting edge portions 182 of the second molding row 18 b. Thus, the first molding row 18a and the second molding row 18b can be used for forming a plurality of concave arc saw teeth and a plurality of V-shaped cuts which are staggered with each other for at least two screw teeth 31, so that the tapping resistance can be further reduced, and the workpiece can be tapped smoothly. The molding portion 18 may be positioned on the surface of the tooth module H, and the tooth module H may be detachably positioned in the coupling groove 17 to replace the worn molding portion 18. In addition, in another embodiment, the molding portion 18 may have more than three molding rows, so that the present invention is not limited by each molding row to mold different threads.
With continued reference to fig. 9 and 10, the screw thread forming sections 11 and 21 of the first dental plate 1 and the second dental plate 2 may have a plurality of circular arc grooves 19 and 26 extending in the up-down direction (direction perpendicular to the direction from the inlet end 1a to the outlet end 1 b), respectively. That is, the extending directions of the plurality of circular arc grooves 19,26 are staggered with the extending directions of the plurality of forming grooves 12, and the staggering may be vertically or non-vertically staggered. Taking the first dental plate 1 as an example, the plurality of circular arc grooves 19 may be concavely formed on the surface between two forming grooves 12 of the first dental plate 1, that is, the position corresponding to the root of the formed screw (as shown in fig. 10), so that the forming of the screw thread 31 by the forming grooves 12 is not affected, and the surface of the first dental plate 1 is spaced between two adjacent circular arc grooves 19. In this way, the plurality of circular arc grooves 19 may form a plurality of circular arc ribs 55 (as shown in fig. 13) at the root between the two threads 31 of the shank 3. The plurality of circular arc grooves 19 may be disposed from the feeding end 1a to the discharging end 1 b.
With reference to fig. 13, a screw 5 formed by the screw threading plate set according to the second embodiment of the present invention includes a rod 51 and a plurality of threads 52, wherein the threads 52 are connected and screwed on the rod 51 to form threads. Each of the at least two screw threads 52 has a plurality of concave-arc serrations 53 and a plurality of notched portions 54, and the plurality of concave-arc serrations 53 and the plurality of notched portions 54 of the two screw threads 52 are offset from each other. Thus, when the screw 5 is threaded into a workpiece such as wooden, resistance can be reduced so that the screw 5 can be smoothly screwed into the workpiece such as wooden. In addition, the thread bottoms of the threads 52 may have a plurality of axially extending circular ribs 55, and a chip receiving groove 56 may be formed between adjacent circular ribs 55. Thus, the plurality of arc ribs 55 can reduce the resistance of the screw 5 when being locked into a workpiece such as wood, and the chip containing groove 56 can contain chips of the workpiece such as wood, thereby having the function of smoothly tapping and drilling into the workpiece.
It should be noted that the plurality of circular arc grooves 19 disclosed in the second embodiment may also be provided on the first dental plate 1 and the second dental plate 2 of the first embodiment. In other words, the screw 4 formed by the first dental plate 1 and the second dental plate 2 according to the first embodiment may have a plurality of axially extending arc ribs at the bottoms of the plurality of threads 42, which is not limited to the embodiment disclosed in the drawings.
In summary, in the screw thread rolling die set of the present invention, the first tooth plate has the molding portion, and the molding portion has a plurality of convex arc tooth portions and a plurality of V-shaped cutting edge portions arranged at intervals on an extending path of at least one molding groove, so when the rod body forms the screw thread by rubbing the first tooth plate and the second tooth plate, a plurality of concave arc saw teeth and a plurality of V-shaped cuts can be molded on the screw thread together, thereby the screw with concave arc saw teeth and a plurality of V-shaped cuts can be molded at one time, and the secondary processing is not needed to mill the V-shaped groove, thereby having the effect of realizing better production efficiency.
In addition, the molding part can be positioned on the tooth module so as to be detachably combined with the combining groove of the first dental plate through the tooth module. Therefore, the screw teeth to be formed can be arranged in a relatively aligned or staggered manner on the concave arc saw tooth parts of two adjacent screw teeth according to the screw teeth distribution structure to be formed, and the tooth modules can be replaced according to different requirements, so that the effect of convenient processing can be realized.
In addition, the screw can cut the wooden workpiece and other workpieces through the concave arc saw teeth and the V-shaped notches, so that the tapping resistance of the screw can be reduced. And the wood fiber wound on the screw can be cut off through the plurality of concave arc saw teeth, so that the cutting resistance of the plurality of V-shaped cuts can be reduced, and the effect of smoothly tapping and drilling into a workpiece can be realized.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that the present invention is not limited thereto, and that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended to cover all modifications and equivalents of the present invention as defined by the appended claims. In addition, when the above-described embodiments can be combined, the present invention includes any combination of the embodiments.
Claims (24)
1. A screw thread rolling die set, comprising:
the first dental lamina comprises a shaping part and a first tooth plate, wherein the shaping part is arranged on one surface of the first dental lamina, the shaping part is provided with a plurality of shaping grooves, the first dental lamina is provided with a tip shaping part positioned below the shaping part, the shaping part is positioned on the extending path of at least one shaping groove and comprises a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts, each convex arc tooth part is provided with a plurality of tooth peaks, each V-shaped cutting edge part is provided with a plurality of edge peaks, and each tooth peak and each edge peak are intersected with the extending direction of at least one shaping groove; a kind of electronic device with high-pressure air-conditioning system
The first dental plate and the second dental plate can move relatively in parallel to form a plurality of threads on a rod body clamped together.
2. The screw thread rolling die set of claim 1, wherein the plurality of peaks of each of the arcuate tooth portions extend parallel to one another.
3. The screw thread rolling die set of claim 1, wherein the plurality of peaks of each V-shaped cutting edge portion extend parallel to each other.
4. The screw thread rolling die set as recited in claim 1, wherein the plurality of convex curved teeth and the plurality of V-shaped cutting edge portions are spaced apart from each other.
5. The screw thread rolling die set of claim 1, wherein the plurality of tooth peaks are located in a virtual arc in a cross section of the convex arc tooth portion.
6. The screw thread rolling die set of claim 1, wherein the V-shaped cutting edge has a cross-section with the plurality of peaks at a virtual horizontal line.
7. The screw die plate set of claim 1 wherein the plurality of peaks are lower than the plurality of peaks in a cross section of the molding portion.
8. The screw thread rolling die set as claimed in claim 1, wherein the molding part has at least one first molding row and one second molding row, each of the first molding row and the second molding row is aligned with at least one of the molding grooves, and the first molding row and the second molding row have the plurality of convex arc tooth parts and the plurality of V-shaped cutting edge parts which are arranged at intervals.
9. The screw die plate set of claim 8, wherein the convex tooth portion and the V-shaped cutting edge portion of the first shaping row are offset from the convex tooth portion and the V-shaped cutting edge portion of the second shaping row, respectively.
10. The screw die plate set of claim 8, wherein the first molding row and the second molding row are respectively located in adjacent molding grooves.
11. The screw thread rolling die set according to claim 1, wherein the thread forming portions of the first and second tooth plates have a plurality of circular arc grooves extending in an up-down direction, respectively, the extending directions of the plurality of circular arc grooves are staggered with the plurality of forming grooves of the first and second tooth plates, and the plurality of circular arc grooves are concavely formed on the surfaces of the first and second tooth plates other than the forming grooves.
12. The screw thread rolling die set as recited in claim 1, wherein the molding portion is located on a surface of a tooth module, the first tooth plate has a coupling groove, the coupling groove is communicated with the screw thread molding portion, and the tooth module is removably located in the coupling groove.
13. A tooth module is characterized in that one surface of the tooth module is provided with a molding part, the molding part comprises a plurality of convex arc tooth parts and a plurality of V-shaped cutting edge parts, each convex arc tooth part is provided with a plurality of tooth peaks, and each V-shaped cutting edge part is provided with a plurality of edge peaks.
14. The tooth module according to claim 13, wherein the plurality of tooth peaks of each cam tooth extend parallel to one another.
15. The tooth module according to claim 13, wherein the plurality of peaks of each V-shaped cutting edge portion extend parallel to each other.
16. The tooth module according to claim 13, wherein the plurality of convex arcuate tooth portions and the plurality of V-shaped cutting edge portions are spaced apart from one another.
17. The tooth module according to claim 13, wherein said plurality of tooth peaks are located in a virtual arc in a cross-section of said convex arcuate tooth portion.
18. The tooth module according to claim 13, wherein the V-shaped cutting edge has a cross-section with the plurality of peaks at a virtual level.
19. The tooth module as claimed in claim 13, characterized in that the plurality of lands are lower than the plurality of tooth peaks in a cross section of the molding portion.
20. The tooth module according to claim 13, wherein the molding portion has at least one first molding row and one second molding row, and the first molding row and the second molding row have the plurality of convex curved tooth portions and the plurality of V-shaped cutting edge portions, respectively, which are arranged at intervals.
21. The tooth module according to claim 20, wherein the convex curved tooth portion and the V-shaped cutting edge portion of the first shaped row are offset from the convex curved tooth portion and the V-shaped cutting edge portion of the second shaped row, respectively.
22. A screw, comprising:
a rod body; a kind of electronic device with high-pressure air-conditioning system
The plurality of threads are connected and spirally wound on the rod body to form threads, and the periphery of at least one thread is provided with a plurality of concave arc saw tooth parts and a plurality of cut-out parts.
23. The screw of claim 22, wherein the plurality of concave arcuate saw tooth portions and the plurality of cut-out portions on one thread are disposed in spaced relation to each other.
24. The screw of claim 22 wherein the peripheral edge of at least two threads each have a plurality of concave arcuate serrations and a plurality of notches, the plurality of concave arcuate serrations and the plurality of notches of the two threads being offset from one another.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111114259A TWI795270B (en) | 2022-04-14 | 2022-04-14 | A screw thread rubbing plate set, tooth module and screw |
| TW111114259 | 2022-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116944391A true CN116944391A (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210515773.8A Pending CN116944391A (en) | 2022-04-14 | 2022-05-12 | Screw thread rolling plate set, tooth module and screw |
| CN202221136541.3U Active CN217831696U (en) | 2022-04-14 | 2022-05-12 | Screw thread rolling plate group, tooth module and screw |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221136541.3U Active CN217831696U (en) | 2022-04-14 | 2022-05-12 | Screw thread rolling plate group, tooth module and screw |
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| Country | Link |
|---|---|
| CN (2) | CN116944391A (en) |
| TW (1) | TWI795270B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW492527U (en) * | 2001-08-30 | 2002-06-21 | Jin-Suen Chen | Improved structure for wood screw |
| JP2005127487A (en) * | 2003-10-27 | 2005-05-19 | Ren-Dung He | Screw spike |
| TWM275907U (en) * | 2005-03-22 | 2005-09-21 | Li Tai Rolling Dies Co Ltd | Tapping tool set for screw |
| TWM290941U (en) * | 2005-12-07 | 2006-05-21 | Chaen Wei Corp | Cutting screw |
| TWM468584U (en) * | 2013-06-20 | 2013-12-21 | Yi Shang Industry Co Ltd | Helical screw |
| CN213052564U (en) * | 2020-07-23 | 2021-04-27 | 浙江明泰控股发展股份有限公司 | Processing device for self-tapping screw rapidly installed on plastic part |
| TWM631081U (en) * | 2022-04-14 | 2022-08-21 | 緯紘精密工業股份有限公司 | Thread rolling plate set for screws, mould block for threads, and screw |
-
2022
- 2022-04-14 TW TW111114259A patent/TWI795270B/en active
- 2022-05-12 CN CN202210515773.8A patent/CN116944391A/en active Pending
- 2022-05-12 CN CN202221136541.3U patent/CN217831696U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| TWI795270B (en) | 2023-03-01 |
| CN217831696U (en) | 2022-11-18 |
| TW202339881A (en) | 2023-10-16 |
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