TWM588610U - Body of ratchet wrench - Google Patents

Abstract

The present invention provides a body of a ratchet wrench. The body includes a handle and a driving head. The driving head forms accommodating grooves on opposite sides. In this system, a bar blank is shaped by cold forging with a cold forging die and has a handle and a drive head, and then cold forging by a stamping die to form a first side and a second side, and then the drive head is processed by a tool. It is expected to form the accommodating groove, followed by heat treatment to increase the hardness, and formed after cooling, the body of the ratchet wrench of this creation can be completely formed by the cold forging process.

Description

Ratchet wrench body

This creation is about a body of a ratchet wrench, especially a body of a ratchet wrench formed entirely by cold forging stamping process.

According to the conventional ratchet wrench body, the manufacturing process is generally after preparing the rod blank, heating the rod blank to red, and then pressing the red rod blank with a stamping die to form a semi-finished product of a predetermined shape (the so-called red forging process), After turning and milling, the two sides of the drive head and the accommodating grooves for the ratchet assembly are formed. After heat treatment, the grinding process is performed to optimize the surface. Even surface treatment such as electroplating or blackening will be used to make the surface less rusty. This completes the manufacture of the finished body of the ratchet wrench.

However, the above-mentioned conventional ratchet wrench body has the following problems in its manufacturing process:

1. Because the bar blank is formed by the forging method of red satin, the bar blank must be heated to a hot red state before stamping and setting. In addition to the complex and high cost of the high temperature heating device, the environment for the manufacture of the body of the ratchet wrench is inevitable It is carried out under high temperature, and the staff will inevitably feel hot and uncomfortable during the process.

2. In the manufacturing process of the body of the conventional ratchet wrench mentioned above, there must be quite a few process steps in terms of the red forging process. There are often multi-station stamping die workstations, and the large number of manpower requirements also make it difficult to reduce wage costs.

Therefore, how to solve the problem of conventionally manufacturing the body of the ratchet wrench by red forging is the focus of this creation.

In order to solve the above problems, this creation provides a ratchet wrench body, mainly because the system is manufactured by cold forging and stamping processes, thereby forming the body structure of the ratchet wrench, does not need to be manufactured in a high temperature environment, and can save manpower relatively cost.

An embodiment of the present invention provides a body of a ratchet wrench, which includes a grip formed by cold forging stamping and a driving head, and forming a first side and a second side opposite by the cold forging stamping driving head And, the driving head has an accommodating groove processed and cut out by the cutter, and the accommodating groove can be set by the ratchet assembly.

In this way, the body of the ratchet wrench is manufactured by cold forging stamping, so there will be no high temperature environment in the red forging process during the manufacturing process, and the operator does not need to work at high temperature to avoid the problem of heat and physical discomfort. And, the manpower required for cold forging and stamping is relatively less than the red forging process, which can effectively reduce the labor cost of the ratchet wrench body manufacturing, and the process is relatively fast and efficient.

In addition, the shape of the driving head of this creation can be based on the cold forging stamping forming functional shape, and it is not required for its beautiful appearance, and compared with the body of the red forged ratchet wrench, the body of the ratchet wrench of this creation The surface already has basic flatness.

In order to facilitate the explanation of the central idea expressed in the column of the above-mentioned new content, the specific embodiment is hereby expressed. In the embodiments, various objects are drawn according to the proportion, size, deformation or displacement suitable for description, rather than drawn according to the proportion of actual elements, which will be described first.

Please refer to Figure 1 to Figure 4(d), this creation provides a ratchet wrench body. As shown in FIG. 1, the ratchet wrench 100 mainly includes a body 10 and a ratchet assembly 20. The body 10 includes a handle 11 and a driving head 12. The driving head 12 has a first side 121 and a second side 122 opposite to each other, and The driving head 12 has an accommodating groove 13 for accommodating the ratchet assembly 20. The ratchet assembly 20 described here includes, for example, the ratchet head 21 and the switch 22.

In this embodiment, as shown in FIG. 4(d), the accommodating tank 13 includes a first accommodating tank 131 and a second accommodating tank 132, and the first accommodating tank 131 and the second accommodating tank 132 are in lateral communication. The accommodating groove 13 has an opening 133 on the first side 121. The opening 133 is opened along the contours of the first accommodating groove 131 and the second accommodating groove 132, and the accommodating groove 13 has a round hole 134 on the second side 122. The round hole 134 and the first receiving groove 131 are correspondingly communicated.

In this embodiment, the accommodating groove 13 is provided with a pair of concave grooves 135 in the second accommodating groove 132, and a plurality of perforations 136 are provided, and the concave grooves 135 and the perforations 136 respectively penetrate the second side 122 to provide the ratchet The ratchet assembly 20 of the head 21 and the switch 22 can be assembled with the driving head 12. In addition, the driving head 12 is generally rectangular, and the driving head 12 has a convex arc shape at the periphery 123 different from the first side 121 and the second side 122.

This author provides a system flow 200 of a ratchet wrench. As shown in FIG. 2, it includes the steps of preparation 201, cold forging and stamping 202, slotting 203, heat treatment 204, and cooling forming 205, among which:

The step of preparing material 201 is to prepare a long rod-shaped blank 30, which is prepared by cutting a base material (as shown in FIGS. 3(a) and 3(b)) The base material is, for example, a disc element or wire material, and the bar blank 30 can be shaped through a cold forging stamping process, such as carbon steel or alloy steel.

The step of cold forging 202 is to cold forge the bar blank 30 with a cold forging die (not shown) to form a semi-finished product 40. The semi-finished product 40 includes the aforementioned handle 11 and driving head 12, in this embodiment In the step of cold forging 202, the cold forging die is set through a punch (not shown) to form semi-finished product 40. In the stamping 203 step, the driving head 12 is stamped with a stamping die (not shown) to form the first side 121 and the second side 122 (as shown in FIG. 4(c)). In this embodiment, the steps of cold forging 202 and stamping 203 are performed at room temperature, but it is not limited to this, as long as the working temperature is lower than the high temperature of red forging, it is still the one who is protected by the creation.

In the step of grooving 204, the driving head 12 is processed and removed through a cutter (not shown) to form an accommodating groove 13 for the ratchet assembly 20 to set. In this embodiment, the step of grooving 204, as shown in FIG. 4(d), is formed by processing the drive head 12 with a vertical processing machine (not shown) installed with the cutter The accommodating groove 13 includes processing of a first accommodating groove 131, a second accommodating groove 132, an opening 133, a circular hole 134, a groove 135, and a perforation 136, and the vertical processing machine may be a vertical milling machine. The tool can be a milling cutter or a drill.

The step of heat treatment 205 is to heat-treat the semi-finished product 40 after the step of slotting 204 to enhance the hardness. The steps of the heat treatment 205 include quenching hardening and temper softening procedures, which are completed in a predetermined time. In this embodiment, the temperature of the quench hardening in the heat treatment 205 step is between 700°C and 870°C, and the tempering softening temperature is between 150°C and 250°C, and the predetermined time For two hours.

The step of cooling forming 206 is to cool the semi-finished product 40 after the step of heat treatment 205 to form the body 10 of the ratchet wrench 100.

From the above description, it is not difficult to find that the characteristics of this creation are:

1. The body 10 of the ratchet wrench 100 is mainly formed by cold forging stamping, so it will not be heated during the manufacturing process like the red forging process and the environment is at high temperature, so the operator does not have to be at high temperature Work can avoid hot and uncomfortable problems.

2. The body 10 of the ratchet wrench 100 requires less manpower for cold forging and stamping than the red forging process required by multiple stations. The manufacture of the body 10 of the ratchet wrench 100 can effectively reduce the cost of manpower wages, and The process of cold forging and stamping is relatively fast, so as to improve the production efficiency of ratchet wrenches.

3. The body 10 of the ratchet wrench 100 is formed by the cold forging stamping of the driving head 12, and the shape is not required for its beautiful appearance, but only a functional shape. Therefore, compared with the body of the ratchet wrench For the red forging shaper, the surface will be quite rough after being heated to the fiery red state from the bar blank, so it must be processed by grinding, polishing and other procedures, thus greatly increasing the production cost, and the surface of the body 10 of the ratchet wrench 100 of this creation After the step of preparing material 201 is completed, it already has a basic flatness. Therefore, the manufacturing process 200 of this creation is quite suitable for the manufacture of a lower-cost ratchet wrench body.

The above-mentioned embodiments are only used to illustrate this creation, not to limit the scope of this creation. Any modifications or changes that do not violate the spirit of the original creation are within the scope of the original intention of the protection.

100‧‧‧ratchet wrench 200‧‧‧Manufacturing process 201‧‧‧ Preparation 202‧‧‧ Cold Forging 203‧‧‧Stamping 204‧‧‧Slotted 205‧‧‧Heat treatment 206‧‧‧Cool forming 10‧‧‧Body 11‧‧‧grip 12‧‧‧Drive head 121‧‧‧The first side 122‧‧‧Second side 123‧‧‧ around 13‧‧‧Accommodation slot 131‧‧‧The first container 132‧‧‧Second container 133‧‧‧ opening 134‧‧‧round hole 135‧‧‧Ditch 136‧‧‧Perforation 20‧‧‧ratchet assembly 21‧‧‧ratchet head 22‧‧‧Switch 30‧‧‧ stick embryo 40‧‧‧Semi-finished products

Figure 1 is a three-dimensional appearance of the ratchet wrench of this creation. Fig. 2 is a manufacturing flow chart of the body of the ratchet wrench of this creation. Figures 3(a) to 3(b) are schematic diagrams of the body of the ratchet wrench of this invention after preparation and cold forging steps. 4(c) to 4(d) are schematic diagrams of the punching and slotting steps of the body of the ratchet wrench of this invention.

100‧‧‧ratchet wrench

10‧‧‧Body

11‧‧‧grip

12‧‧‧Drive head

121‧‧‧The first side

122‧‧‧Second side

123‧‧‧ around

20‧‧‧ratchet assembly

21‧‧‧ratchet head

22‧‧‧Switch

Claims (8)

A body of a ratchet wrench includes a handle and a driving head formed by cold forging stamping, and the driving head is formed by cold forging to form a first side and a second side opposite to each other, and the driving head has a warp The accommodating groove for cutting and cutting of the cutting tool can be set by the ratchet assembly. The body of the ratchet wrench according to claim 1, wherein the accommodating groove includes a first accommodating groove and a second accommodating groove, the first accommodating groove and the second accommodating groove are in lateral communication, and the accommodating The groove has an opening along the contours of the first and second accommodating grooves on the first side, and a round hole on the second side correspondingly communicates with the first accommodating groove. The body of the ratchet wrench according to claim 2, wherein the accommodating groove is provided with a pair of concave grooves and a plurality of perforations in the second accommodating groove, and the pair of concave grooves and the perforations respectively penetrate the second side surface. The body of the ratchet wrench as described in claim 3, wherein the driving head is generally rectangular, and the driving head is convexly arcuate on the periphery different from the first side and the second side. The body of the ratchet wrench according to claim 1, wherein the accommodating groove is formed by installing the cutter on a vertical processing machine to process the driving head. The body of the ratchet wrench according to claim 5, wherein the vertical processing machine is a vertical milling machine, and the cutter is a milling cutter or a drill. The body of the ratchet wrench according to claim 1, wherein the body is heat-treated and quenched and hardened at a temperature between 700°C and 870°C, and between 150°C and 250°C The temperature is tempered and softened, and the scheduled time is about two hours. The body of the ratchet wrench as described in claim 1, wherein the cold forging stamping of the driving head is performed at room temperature.

Images