TWI676510B - High-torque ratchet penetrating penetrating sleeve and ratchet block manufacturing method - Google Patents

Abstract

The invention relates to a method for manufacturing a penetrating sleeve and a ratchet block of a high-torque ratchet penetrating wrench, which comprises the following steps: preparing a workpiece, processing and secondary processing, and setting through a reinforced ring block provided by the penetrating sleeve. In the secondary treatment of the heat treatment of the transparent sleeve, the size and diameter can be ensured, and the minimum tolerance value and range can be obtained without losing the true circle. The ratchet block is made of metal powder and has a very small size. The densities of the teeth and the penetrating sleeve are engaged with the concave tooth portion, so that the engagement of the ratchet block and the penetrating sleeve can surely and withstand a larger torque value, and the problem of tooth collapse and tooth loss will not occur.

Description

Manufacturing method of penetrating sleeve and ratchet block of high-torque ratchet penetrating wrench

The invention discloses a method for manufacturing a penetrating sleeve and a ratchet block of a high-torque ratchet penetrating wrench, and particularly refers to a technology applied to the field of ratchet wrenches. The main technology is to increase the driving torque of the ratchet wrench, and to achieve a minimum after production Tolerances improve the yield of product production. It is a very practical and progressive invention.

For details, please refer to the Republic of China Patent Bulletin No. M325189 "Torque Ratchet Wrench Tool", which is mainly used to force a damping unit inside the receiving space of the wrench body by the other end of the actuating body. The damping unit is provided with a predetermined gap from the side wall of the wrench body. The damping unit has a predetermined torque value. With the damping property of the damping unit, when the driving torque is greater than the torque value of the damping unit, the damping unit That is, the side wall of the wrench body is pressed, and a locking sound is generated and the driver cannot continue to be locked. By this innovative and unique design, compared with the previous technology, this creation can achieve the normal ratchet forward and reverse use, and both avoid If the user has a large driving torque and accidents, it is practical and progressive.

Generally, the most important parts of a ratchet wrench that can provide torque are the driving body and the actuating body in the conventional technologies listed above. The strength of the engagement between the driving body and the actuating body can depend on The torque resistance value is very important in the production of the driving body and the actuating body. Please refer to Figures 6 to 8 for the common driving body 10 above. The driving body 10 has a driving part 101 ( Through-holes), the driving part 101 is a circular hole and a plurality of holes are staggered on the wall of the hole The convex rib 102 and the concave groove 103 are provided with a tooth portion 104 on the outer surface of the driving body 10. The driving body 10 (also referred to as a sleeve) is a common structure today, and the manufacturing of the driving body 10 Most of the methods are formed by molding after hot forging, but in hot forging, it is easy to change the thickness of the ribs and grooves due to the temperature of the pinch and shaping, resulting in the driving body 10 in the The deformation during the production process gradually loses its roundness, which causes the largest tolerance on the cost after production, which undoubtedly increases waste and waste.

In addition, a common actuating body (also referred to as a ratchet block) has a tooth portion that engages the tooth portion 104 of the driving body 10, and the actuating body must interact with the tooth portion 104 of the driving body 10 because Occlusal, so its hardness must be able to withstand the rotation of the driving body 10, but the common method of making the actuating body was formed by forging in the early days. Forging is divided into three methods: cold forging, hot forging, and warm forging, and then cold pressing. And equalizing pressure to be formed, but each forging method must consume great physical strength and time, so with the advancement of science and technology, the manufacturing method of the brake body has also been improved to the powder metallurgy method, but the powder metallurgy method The fabricated metal body has a low metal density, which results in a limited strength that the metal body can withstand, and the engaging force between the metal body and the driving body 10 will gradually decrease. Therefore, in view of the problems existing in the above-mentioned conventional structure, how to develop an innovative structure that is more ideal and practical, which is really desired by consumers, is also the goal and direction of relevant industry's efforts to develop breakthroughs.

In view of the above circumstances, the inventor has invested a lot of time in researching related knowledge, comparing various advantages and disadvantages, conducting research and development of related products, and going through multiple experiments and tests, and finally launched a "high-torque ratchet penetration wrench The manufacturing method of the penetrating sleeve and the ratchet block "improves the above-mentioned defects to meet the needs of the public.

The main technology of the present invention is to produce a sleeve with minimum tolerance and a ratchet block with high hardness, so that the bite between the sleeve and the ratchet block can withstand a higher torque, thereby being able to fully drive the tightness and slackness. Precision mechanical parts, which improve the patented driving body listed in the conventional technology are easy to deform and lose the roundness during forging, and the metal body is insufficient in the manufacturing method to cause the cost and hardness to be insufficient. , So that the engagement between the actuating body and the driving body cannot withstand a higher torque. To this end, the present inventors strived to achieve the objects and effects of the foregoing invention. A method for manufacturing a penetrating sleeve and a ratchet block of a high-torque ratchet penetrating wrench includes the following steps: preparing a workpiece: preparing a penetrating sleeve And a ratchet block; processing: processing the penetrating sleeve and the ratchet block so that the penetrating sleeve includes a cylinder, a reinforced ring block and a driving hole, the driving hole is two along the cylinder The end is penetrated and an axis line is defined in the center, and the hole wall of the driving hole is further protruded toward the axis line with a plurality of tooth blocks arranged at intervals, and the outer surface of the cylinder is convex with a ring tooth portion; in addition, the reinforced ring block system It is set on the end surface of any end of the cylinder and surrounds the opening edge of the drive hole. The penetrating sleeve is made by forging and pressing. The ratchet block includes a concave tooth portion and a controlled portion. The teeth are meshed with the ring teeth of the cylinder, and the ratchet block is injection-molded with metal powder. Secondary treatment: the subsequent processing of grinding and polishing the penetrating sleeve and the ratchet block.

According to the description of each step of the present invention, a further technical feature is that a thickness distance H is defined from the outer surface to the inner surface of the reinforced ring block, and the cylinder is from the outer surface to the side of the tooth block close to the axis line The distance defines a thickness distance h, and the outer surface of the reinforced ring block and the outer surface of the cylinder are aligned with each other, and the thickness distance H> thickness distance h.

According to the description of each step of the present invention, a further technical feature is that the reinforced ring block further includes an outer ring surface, an inner ring surface, and a top stop surface. The outer ring surface and the outer surface of the cylinder are mutually They are flush with each other, and the inner ring surface falls above the driving hole; in addition, the inner ring surface and A slant surface is further looped between the hole walls of the driving hole, and the slant surface is inclined from the top to the bottom and from the inside to the bottom of the driving hole hole wall from the end connected to the inner ring surface.

According to the description of each step of the present invention, a further technical feature is that the reinforced ring block is arranged around any end of the cylinder along the edge of the driving hole and forms a small diameter hole communicating with the driving hole, and the small diameter hole is The hole diameter is smaller than that of the driving hole.

According to the description of each step of the present invention, a further technical feature is that a ring groove is further formed between the outer surface of the cylinder and the reinforced ring block, and the groove height of the ring groove is from the top surface of the cylinder to the reinforcement. The bottom surface of the ring block is formed, and the height of the reinforced ring block is from the top surface to the bottom surface, and the groove height of the ring groove is smaller than the height of the reinforced ring block.

Based on the above description of the technical features described in the present invention, the advantage is that, through the explanation of each step, during the manufacturing process of the penetrating sleeve, due to the design of the reinforcing ring block, the barrel can be At the time of forging, the change of roundness is reduced, and the minimum tolerance change is achieved, so as to achieve workpiece consistency and avoid unnecessary waste in cost. In addition, it cooperates with the manufacturing method of the ratchet block to eject metal powder to increase the ring teeth of the cylinder. The meshing tightness between the part and the concave tooth part of the ratchet block increases the torque value that the ratchet penetrating wrench can withstand. The maximum value it can withstand is three times the original value, providing users with the ability to operate According to the object to be disassembled and locked to achieve the maximum tightness of the lock, and the force of the loose drive, the limited torque limit is improved to provide greater torque capacity. Therefore, the present invention can be said to be a rather practical and progressive invention, which is worthy of being vigorously promoted by the industry and being made public.

S1‧‧‧ Prepared workpiece

S2‧‧‧Processing

S3‧‧‧ secondary treatment

S4‧‧‧Assembly

H‧‧‧thickness distance

h‧‧‧thickness distance

1‧‧‧ penetration sleeve

11‧‧‧Cylinder

111‧‧‧Ring Tooth

12‧‧‧ ring groove

2‧‧‧thorn block

21‧‧‧ concave tooth

22‧‧‧Controlled Department

3‧‧‧ Enhanced Ring Block

31‧‧‧outer torus

32‧‧‧ inner torus

33‧‧‧Top stop

34‧‧‧ bevel

35‧‧‧small diameter hole

4‧‧‧Drive hole

41‧‧‧tooth block

6‧‧‧ axis line

7‧‧‧ wrench shell

8‧‧‧ Covers

9‧‧‧C buckle

(Knowledge)

10‧‧‧Driver

101‧‧‧Driver

102‧‧‧ raised rib

103‧‧‧Ditch

104‧‧‧Tooth

The first figure is a schematic flow chart of the steps of the present invention.

The second figure is a perspective view of the penetrating sleeve of the present invention.

The third figure is a perspective view of the penetrating sleeve of the present invention from another perspective.

The fourth figure is a sectional perspective view of the line IV-IV of the second figure.

The fifth figure is a schematic plan view of the fourth figure.

The sixth figure is a perspective view of the penetrating sleeve and the ratchet block installed on the wrench housing according to the present invention.

The seventh figure is a three-dimensional schematic view of a conventional technology driving body.

The eighth figure is a schematic cross-sectional view of a conventional technology driving body.

Regarding the technology, means and effects adopted by the present invention, a preferred embodiment will be described in detail with reference to the drawings. It is believed that the above-mentioned objects, structures, and characteristics of the present invention can be understood thoroughly and in detail. . The following is a description of the preferred embodiment, and does not limit the present invention in any form. Refer to the first to sixth figures, the penetrating sleeve and the ratchet block of a high-torque ratchet penetrating wrench of the present invention The manufacturing method includes the following steps: preparing a workpiece S1: preparing a penetrating sleeve 1 and a spine block 2; processing S2: processing the penetrating sleeve 1 and the spine block 2 to make the penetrating sleeve The cylinder 1 includes a cylinder 11 having a cylindrical shape, a reinforced ring block 3 having a T-like shape, and a driving hole 4 which is penetrated along both ends of the cylinder 11 and defines an axis line 6 in the center. The hole wall of the driving hole 4 is further protruded toward the axial line 6 with a plurality of tooth blocks 41 arranged at intervals. The direction of setting of each tooth block 41 is axially protruded according to the positions of the openings at both ends of the driving hole 4 and the intervals The position is a recessed groove, and the outer surface of the cylinder 11 is convex with a ring tooth 111. In addition, the reinforced ring block 3 is arranged on the end surface of any end of the cylinder 11 and along the opening edge of the driving hole 4. Around, and the penetrating sleeve 1 is made by forging and pressing; the ratchet block 2 includes a concave tooth portion 21 and a controlled portion 22, the concave portion The tooth portion 21 is in meshing engagement with the ring tooth portion 111 of the cylinder 11 and the ratchet block 2 is injection-molded with metal powder; secondary processing S3: subsequent processing of grinding and polishing the penetrating sleeve 1 and the ratchet block 2 deal with.

The foregoing is the main technical features of the main embodiment of the present invention, which corresponds to the content of the first item of the scope of the patent application for this case, and the purpose and implementation mode of the present invention can be known in detail. Detailed description or additional technical features of the first content of the scope of patent application, rather than limiting the scope of the first scope of patent application, it should be known that the first scope of the patent scope of this application does not necessarily include the scope of the rest of the patent application for subsidiary applications Technical characteristics.

According to the basic technical description mentioned above, the penetrating sleeve 1 and the spine block 2 formed through the manufacturing method of each step, the producer will make the penetrating sleeve 1 with the barrel 11 and the reinforcing ring block 3, so the penetrating During the processing of the transparent sleeve 1, because the reinforcement ring block 3 is made to limit the rigid changes of the entire penetrating sleeve 1, it is known in the seventh and eighth figures because the grooves span the two ends of the driving body. Therefore, it is easy to cause complete deformation in the heating process, leading to loss of true roundness and the largest error value. Therefore, the present invention uses the setting of the reinforcing ring block 3 to limit one end of the cylinder 11 to reduce heating changes and easily deform it. The problem occurs in order to maintain the smallest tolerance and consistent yield in production; in addition, the ratchet block 2 that cooperates with the penetration sleeve 1 is made of metal powder injection molding, and the metal powder injection molding The thorn block 2 has extremely high hardness, and the particle size of the formed powder is finer than that of traditional powder metallurgy. The density and strength of the sintered block are higher than that of traditional powder metallurgy. Therefore, the thorn block 2 has a high hardness. Hardness and The transparent sleeve 1 has the most accurate roundness. In this way, the penetrating sleeve 1 and the ratchet block 2 are installed in the wrench for driving and use, which can withstand larger torque values and can be applied to applications such as It is a high-precision machinery used in automobiles.

Continuing description, in order to set the penetrating sleeve 1 and the ratchet block 2, in order to be able to withstand greater torque, the thickness of the reinforcing ring block 3 from the outer surface to the inner surface is defined as a thickness distance in the manufacture of the penetrating sleeve. H, and the thickness of the cylinder 11 from the outer surface to the side of the tooth block 41 close to the axial line 6 defines a thickness distance h. In the production setting, the outer surface of the reinforced ring block 3 will be outside the cylinder 11 The surfaces are aligned with each other, so the upper thickness distance H is set to be greater than the thickness distance h. Under the setting of the difference between the transmission thicknesses, during the heating process of the penetration sleeve 1, the reinforced ring block 3 with the thickness distance H is at Due to the thicker heating, its deformation will be smaller than that of the cylinder 11 with the thickness distance h. Therefore, the penetration sleeve 1 is restricted by the end with the reinforced ring block 3 in the heating operation to keep it as close as possible. The size is set so that the final product will not produce too much error, and it has the smallest tolerance and the most accurate production. Furthermore, to understand the technology of the reinforced ring block 3 in more detail, the reinforced ring block 3 includes an outer ring surface 31, an inner ring surface 32, and a top stop surface 33. The outer ring surface 31 will communicate with the outer surface of the cylinder 11 The surfaces are aligned with each other (flush with each other, on the same horizontal plane), and the inner ring surface 32 will fall above the driving hole 4, and an inclined surface is further formed between the inner ring surface 32 and the hole wall of the driving hole 4. 34, and the inclination direction of the inclined surface 34 is set from the end connecting the inner ring surface 32 to the hole wall of the driving hole 4 from top to bottom and from the inside to the outside. The reinforced ring block 3 is disposed at the opening of the driving hole 4 of the cylinder 11 (both ends of the driving hole 4), and the reinforced ring block 3 surrounds the cylinder 11 to form a small-diameter hole 35. The small-diameter hole 35 is communicated with the driving hole 4, but the diameter of the small-diameter hole 35 is smaller than that of the driving hole 4. Therefore, the penetration sleeve 1 is matched with the cylindrical body 11 and the reinforced ring block 3 (the cylindrical body 11 and the reinforced ring block 3 are integrated into a design), so that the penetration sleeve 1 can also be heated under the processing operation. Maintaining the best roundness and achieving the smallest tolerance value allows the size and specifications of the penetration sleeve 1 to be continuously maintained at the same, and has a very high product yield.

In addition, the design of the ratchet block 2 is performed by metal powder injection molding. Metal injection molding (English: Metal Injection Molding, MIM for short), or "Powder Injection Molding", "Ceramic injection molding" (Ceramic Injection Molding) is a revolutionary technology that combines plastic injection molding, polymer polymer chemistry, powder metallurgy technology and metal materials science. Its technology uses ultra-fine metal powder and a binder, after mixing, Mixing, heating, and granulation processes are used to make injection molding raw materials, which have fluidity. They are formed into green embryos through high-precision special molds (injection machines), and then processed by dewaxing, sintering, or automated high-speed production of high-density, High-precision and complex-shaped metal parts have the advantage of reducing the procedures and costs of traditional metal processing. Finally, according to the product functions and specifications, secondary processing is performed if necessary, such as heat treatment and surface treatment. Therefore, the manufacturing method of the ratchet block 2 through the metal powder injection can reach extremely high hardness, and then, with the precise manufacture of the penetrating sleeve 1, the non-distortion circle is made to achieve the minimum tolerance value, and finally the assembly operation In the above, the processed penetration sleeve 1 and the ratchet block 2 are assembled in a wrench housing 7, and the control components are sequentially assembled, and then sealed with a sheet 8 to complete the assembly of the high-torque ratchet penetration wrench. The two are put into the wrench housing 7 according to the steps of assembling and molding S4, and then all parts are fixed to the wrench housing 7 with a cover sheet 8, so that the combination of penetrating the sleeve 1 can be completed.

Finally, in order to ensure that the penetration sleeve 1 can be stably installed on the wrench housing 7, a ring groove 12 is further formed between the outer surface of the cylinder 11 and the reinforcing ring block 3. The function of the ring groove 12 is mainly It is provided with a C-shaped buckle 9 embedded, and when the cylinder body 11 and the ratchet block 2 are installed in the wrench housing 7 according to the assembly steps, and then the cover 8 is used to cover, and the sleeve 1 has a ring recess. The groove 12 will protrude from the cover sheet 8. In this way, the C-shaped buckle 9 can be partially embedded in the ring groove 12 and partially affixed to the cover sheet 8 to complete the fixing of the cylinder 11 (the above is to wear The normal assembly method of the ratchet wrench is only decomposed as an illustration.) According to the steps to complete the production of the ratchet penetrating wrench, the engagement between the penetrating sleeve 1 and the ratchet block 2 can be provided accurately and completely. The characteristics of the injection molding of the upper spine block 2 and the setting that the penetrating sleeve 1 does not distort the circle and has the smallest tolerance value, the combination between the penetrating sleeve 1 and the ratchet block 2 can withstand greater Torque. Compared with the conventional technology, the present invention is more capable of withstanding at least 3 times the original setting. Small, the user can provide suitable tensioning of more about different mechanical lock is provided for the relevant articles, disassembled, and according Such step The meshing between the penetrating sleeve 1 and the ratchet block 2 produced in this step greatly reduces problems such as chipping and abrasion, thereby maintaining a high utilization rate and reducing unnecessary waste in cost.

In summary, under the manufacture of the penetrating sleeve 1 and the ratchet block 2, since the one end of the penetrating sleeve 1 is provided with a reinforced ring block 3, the penetrating sleeve 1 can be used for the secondary treatment of heating processing. Make sure that the size and diameter of the penetrating sleeve 1 will get the minimum tolerance value and range without losing the true circle. In addition, the ratchet block 2 is made of metal powder and has a very small density. 21 Engages the penetrating sleeve 1, so that the engagement of the ratchet block 2 and the penetrating sleeve 1 can be sure and withstand a larger torque value, and no problems such as chipping and tooth loss will occur. The best use state, and more importantly, in the production, both the penetration sleeve 1 and the ratchet block 2 can maintain a uniform size and consistency, thereby improving the high yield of product production. The preferred embodiments of the present invention are not intended to limit the present invention in any form, so that any modification or change related to the present invention made in the same spirit of the invention is an alternative that can be implemented accordingly. All of them with the same effect should still include It is intended within the scope of protection of the present invention.

To sum up, the "method of manufacturing a penetrating sleeve and a ratchet block of a high-torque ratchet penetrating wrench" according to the present invention is practically and cost-effectively and completely meets the needs of industrial development, and the disclosed structural invention It also has an unprecedented innovative structure, so it should have no doubt that it is "novelty", and the invention can be more effective than the conventional structure, so it is also "progressive", which is fully in line with China's patent law on invention patents The requirements of the application requirements are filed in accordance with the law, and I would like to invite the Bureau to review and affirmatively.

Claims (5)

The invention discloses a method for manufacturing a penetrating sleeve and a ratchet block of a high-torque ratchet penetrating wrench, which comprises the following steps: preparing a workpiece: preparing a penetrating sleeve and a ratchet block; and processing the penetrating sleeve and the ratchet block. It is processed so that the penetrating sleeve includes a cylinder, a reinforced ring block and a driving hole. The driving hole is penetrated along the two ends of the cylinder and an axis line is defined in the center. The hole wall is further provided with a plurality of tooth blocks protruding toward the axis line, and the outer surface of the cylinder is convex with a ring tooth portion. In addition, the reinforced ring block is provided on the end surface of any end of the cylinder and along the opening of the driving hole. Around the edge, and the penetrating sleeve is made by forging and pressing; the ratchet block includes a concave tooth portion and a controlled portion, the concave tooth portion and the ring tooth portion of the cylinder body mesh with each other, and the ratchet The block is injection-molded with metal powder; secondary treatment: subsequent processing of grinding and polishing the penetrating sleeve and the ratchet block. According to the manufacturing method of the penetrating sleeve and the ratchet block of the high-torque ratchet penetrating wrench according to item 1 of the scope of the patent application, wherein a thickness distance H is defined from the outer surface to the inner surface of the reinforced ring block, and the cylinder is formed by The distance from the outer surface to the side of the tooth block near the axis line defines a thickness distance h, and the outer surface of the reinforced ring block and the outer surface of the cylinder are aligned with each other, and the thickness distance H> thickness distance h. According to the manufacturing method of the penetrating sleeve and the ratchet block of the high-torque ratchet penetrating wrench according to item 2 of the scope of the patent application, wherein the reinforced ring block further includes an outer ring surface, an inner ring surface and a top stop surface, The outer annular surface and the outer surface of the cylinder are flush with each other, and the inner annular surface falls above the driving hole. In addition, an inclined surface is further formed between the inner annular surface and the hole wall of the driving hole. And the inclined surface is inclined from top to bottom and from the inside to the outside of the driving hole hole wall from one end connected to the inner ring surface. According to the manufacturing method of the penetrating sleeve and the ratchet block of the high-torque ratchet penetrating wrench according to item 3 of the scope of the patent application, the reinforcing ring block is arranged around the driving hole hole edge and is formed on either end of the cylinder to form a small The diameter hole communicates with the driving hole, and the diameter of the small diameter hole is smaller than that of the driving hole. According to the manufacturing method of the penetrating sleeve and the ratchet block of the high-torque ratchet penetrating wrench according to item 4 of the scope of the patent application, a ring groove is further formed between the outer surface of the cylinder body and the reinforcing ring block, and the ring recess The groove height of the groove is formed from the top surface of the cylinder to the bottom surface of the reinforced ring block, and the reinforced ring block has a height from the top surface to the bottom surface, and the groove height of the ring groove is smaller than the height of the reinforced ring block.