TWI716896B - Method for manufacturing universal sleeve integrated joint piece - Google Patents

Abstract

The invention relates to a method for manufacturing a universal sleeve integrated joint member, comprising the following steps: (1) preparing a material, first preparing an unprocessed part having a predetermined length and a rod diameter; (2) cutting the joint end, and then one end of the unmachined part is cut and formed by a processing tool to form a joint end which is not a true circular shape; (3) is forged, and a pair of forging dies are used for stamping and forging the joint end portion, so that the joint end is formed into a true round shape. The ball head and the protrusions protruding from the opposite side edges of the ball head are forged and formed into a predetermined geometric shape, and are integrally formed with the ball head.

Description

Manufacturing method of universal sleeve integrated joint piece

The invention relates to a universal sleeve product used in pneumatic or electric tools, in particular to a manufacturing method of a universal sleeve integrated joint piece formed by a forging method.

Press, the general universal sleeve is usually used on pneumatic or electric tools. By choosing and installing various styles of tool heads, it can quickly perform the disassembly and assembly operations of various bolts. As shown in Figure 1, it is China's No. I397456 The structure of the universal sleeve 10 disclosed in the No. Invention Patent Case. The conventional universal sleeve 10 mainly includes a female seat 11, a joint piece 12, a pin 13, a sliding sleeve 14 and a spring 15. The female seat 11 At one end is provided with a driving end 111 for the sleeve connection of pneumatic or electric tools (not shown), and at the other end is provided with a receiving slot 112 into which the connector 12 is placed. The female seat 11 is located on the inner wall of the receiving slot 112 Two longitudinal grooves 113 are further recessed on both sides of the connector 12, one end of the joint 12 is made with a ball head 121, and the other end is provided with a tool head (not shown) of a predetermined pattern for nesting installation At the end 122, the neck of the ball head 121 is restricted by the convex top of the female seat 11 embedded with two steel balls (not shown), so that the joint piece 12 can be connected with the female seat 11, passing through the center of the ball head 121 A pin hole 123 is provided for the plug pin 13 to penetrate transversely. The two ends of the plug pin 13 protrude from both sides of the ball head 121 and are clamped into the two longitudinal long grooves 113, thereby enabling the joint 12 and the female seat 11 to form a linkage The joint part 12 can be tilted and swiveled in the female seat 11 by using the ball head 121, thereby changing the connection angle of the tool head, so that the pneumatic or electric tool can drive the tool head to rotate at a high speed through the universal sleeve 10, The tool head can use the universal sleeve 10 to conveniently change various angles to disassemble and assemble the bolt.

The above-mentioned patents disclose that the joint member 12 formed by inserting the pin 13 through the ball head 121 is commonly used in the current common universal sleeve 10 structure. However, this universal sleeve 10 structure has the following problems:

1. The connector 12 formed by inserting the pin 13 into the pin hole 123, since the pin 13 and the connector 12 are two separate and independent components, they must be manufactured separately, and the precision of their matching must be controlled separately, and the assembly is also The plug pin 13 must be inserted into the pin hole 123 first, and the connector 12 can then be assembled into the female seat 11 for assembly. Under the premise of increasing labor costs today, there are too many manufacturing and assembly steps, which will inevitably cause manufacturing and The increase in assembly costs is not conducive to the competition of subsequent products.

2. The connector 12 is formed by inserting the plug 13 into the pin hole 123. Since the plug 13 and the connector 12 are two independent components, in actual use, there must be a gap between the pin 13 and the pin hole 123 of the connector 12 There is a problem of damage caused by mutual friction. Once there is friction and damage between the plug 13 and the joint 12, it is easy to cause the joint 12 to loosen and slip during use, and the universal sleeve 10 rotates at a high speed. , It may cause industrial safety problems that its internal parts are thrown out.

In view of this, how to solve the long-standing problem of the conventional universal sleeve 10 is the primary subject to be solved by the present invention.

One of the objectives of the present invention is to provide a method for manufacturing a universal sleeve integrated joint, which has the effect of simplifying the assembly steps to reduce the manufacturing time and cost, and can completely solve the conventional problem of inserting the plug 13 in the pin hole 123 The internal assembly structure will cause friction and damage between the plug 13 and the pin hole 123 after a period of use.

The second object of the present invention is to provide a method for manufacturing a universal sleeve integrated joint piece, which utilizes an integrally formed forging process, which can reduce the trimming work of the joint piece 12, making it faster and easier to manufacture The effect.

The third object of the present invention is to provide a method for manufacturing a universal sleeve integrated joint piece, which can form a reinforcing rib by forging and press, and achieve the effect of increasing the service life by strengthening the structural strength.

In order to achieve the foregoing purpose, the present invention provides a method for manufacturing a universal sleeve integrated joint piece, including the following steps: (1). Material preparation, first prepare an unprocessed piece with a predetermined length and rod diameter; (2). Cut the joint end, and then use a processing machine to cut the end of the unprocessed part to form a non-circular joint end; (3). Forging to shape, use a set of forging dies to press and forge the joint end to make the A ball head with a true round shape and two convex parts protruding from opposite sides of the ball head are formed at the joint end. The two convex parts are forged and pressed into a predetermined geometric shape, and the convex part and the ball head are Do it in one piece.

Preferably, in the step (2), the joint end is cut to form a slightly oval shape.

Preferably, in step (3), the joint end is forged to form a cylindrical convex portion.

Preferably, in step (3), the joint end is forged to form a convex portion in the shape of a polygonal column.

Preferably, in step (3), at least one reinforcing rib integrally connected with the ball head is forged at the joint end at the side of each convex part.

It is not difficult to gain an in-depth understanding of the above-mentioned objects and advantages of the present invention from the detailed description of the selected embodiments and the accompanying drawings.

Conventional components

10‧‧‧Universal sleeve

11‧‧‧Female seat

111‧‧‧Drive end

112‧‧‧Cuvette

113‧‧‧Longitudinal slot

12‧‧‧Connector

121‧‧‧Ball head

122‧‧‧Mounting end

123‧‧‧Pin hole

13‧‧‧Latch

14‧‧‧Slide sleeve

15‧‧‧Spring

Elements of the invention

1‧‧‧Unprocessed parts

101‧‧‧Connector end

2‧‧‧Mould

3‧‧‧Semi-finished products

301‧‧‧Ball head

302‧‧‧Protrusion

303‧‧‧Reinforcing rib

4‧‧‧Finished product

401‧‧‧Drive end

20‧‧‧Female seat

21‧‧‧Cuvette

22‧‧‧Channel

23‧‧‧Longitudinal slot

30‧‧‧Connector

31‧‧‧Connector end

311‧‧‧Ball head

312‧‧‧Protrusion

313‧‧‧Reinforcing rib

32‧‧‧Drive end

40‧‧‧Elastic parts

50‧‧‧Clip

60‧‧‧Slide sleeve

70‧‧‧Connector

71‧‧‧Connector end

711‧‧‧ball head

712‧‧‧Protrusion

Figure 1 is a schematic diagram of the structure of the universal sleeve disclosed in China's invention No. I397456; Figure 2 is a flowchart of the processing steps of the first embodiment of the invention; Figure 3 is a schematic diagram of the processing steps of the above embodiment of the invention; Figure 4 is an exploded perspective view of the above embodiment of the present invention; Figure 5 is a combined cross-sectional view of the above embodiment of the present invention; Figure 6 is a cross-sectional view of Figure 5 along line 6-6; and Figure 7 is the present invention The perspective view of the connector of the second embodiment.

Referring to Figures 2 and 3, the present invention provides a method for manufacturing a universal sleeve integrated joint part. The main focus is to produce an integrated joint part. In the first embodiment, the following steps are included : (1) Preparation → (2) Cutting the joint end → (3) Forging and forming, and then, the production process of each processing step is described in detail later.

(1). Prepare materials. First, prepare an unprocessed part 1 with a predetermined length and rod diameter. The unprocessed part 1 of this embodiment uses a cylindrical rod.

(2) Cut the joint end, and then use a processing machine (such as a CNC lathe or a CNC compound turning and milling machine) to cut and form a non-circular joint end 101 on one end of the unprocessed part 1. In this embodiment In the example, the joint end 101 is machined to have a slightly oval shape.

(3). Forging to form, and then, using a set of forging die 2 with a predetermined cavity shape inside to perform the stamping operation, the die 2 can be stamped and forged for the joint end 101 part to become half Finished product 3. The cavity shape of the mold 2 allows the joint end 101, which was originally in an oval shape, to be forged to form a true round ball head 301, and two protrusions protruding from opposite sides of the ball head 301 Portion 302, and two reinforcing ribs 303 formed at the side of each convex portion 302. In this embodiment, the two convex portions 302 are forged to form a cylindrical shape, and the convex portion 302 and the spherical head 301 It is integrally formed, and the two reinforcing ribs 303 are in the shape of a flat plate, which are just connected between the convex portion 302 and the spherical head 301 so that the two are integrally connected.

Finally, a processing machine is used to cut the other end of the semi-finished product 3 to form a driving end 401 that can be fitted with various tool heads (not shown in the figure), and thus the finished joint piece 4 is completed.

Referring to Figures 4 to 6, the main structure of the universal sleeve of the present invention includes a female seat 20, a joint member 30, an elastic member 40, two latching members 50 and a sliding sleeve 60, wherein the joint member 30 That is, the finished product 4 completed by the above processing steps, and then the overall structure of the present invention will be described later.

The female seat 20 is provided with a receiving groove 21 at one end, and two holes 22 connected to the receiving groove 21 are pierced on the outer periphery. The female seat 20 is located on opposite sides of the inner wall of the receiving groove 21 with two longitudinal recesses. Long slot 23.

The joint 30 is the most important component of the present invention. A joint end 31 and a drive end 32 are respectively provided at both ends. The joint end 31 has a ball head 311 and two protruding sides of the ball head 311 The convex part 312 at the side and the two reinforcing ribs 313 formed on the side of each convex part 312 are forged and pressed. The ball head 311 is inserted into the socket 21 of the female seat 20, and each convex part 312 can just fit along The longitudinal slot 23 of the female seat 20 is snapped into the sleeve, so that the joint member 30 and the female seat 20 can achieve linkage. A proper gap is maintained between the convex portion 312 and the groove bottom of the longitudinal groove 23, so that the joint member 30 can swing on the female seat 20 at various tilt angles.

The elastic member 40 can be composed of a spring or an elastic piece, one end of which is pressed against the bottom of the receiving groove 21 of the female seat 20, and the other end is resilient to the ball head 311 of the joint member 30 to provide the joint member 30 with an upward resilience force In this embodiment, the two latches 50 are composed of steel balls, which are respectively accommodated in the holes 22 of the female base 20, the sliding sleeve 60 is sleeved on the outer periphery of the female base 20, and the two latches 50 are After the sliding sleeve 60 is compressed, it can be horizontal The displacement protrudes into the receiving groove 21 of the female seat 20 to just form a catch limit on the upper edge of the ball head 311 of the joint member 30, whereby the joint member 30 and the female seat 20 can be connected together.

When the present invention is in the assembling step, as long as the two protrusions 312 of the connector 30 of the present invention are aligned with the two longitudinal grooves 23 of the female seat 20 and directly sleeved, the connector 30 and the female seat 20 are connected together, and then Set the sliding sleeve 60 on the female seat 20, and the sliding sleeve 60 will push the two latches 50 to move laterally toward the receiving groove 21, so that the two latches 50 just abut against the ball head 311 of the joint 30 A catch is formed at the upper edge of the socket, so that the joint member 30 can be prevented from loosening from the female seat 20, and the elastic member 40 at the bottom of the receiving groove 21 provides a force against the ball head 311, and the joint member 30 The contact with the female seat 20 can be maintained, so that the present invention is not prone to vibration under high-speed operation.

The above is the overall composition structure and assembly steps of the universal sleeve of the present invention, and then the technical problem to be solved by the present invention will be described in detail later.

The most important feature of the present invention is that the joint 30 is made by forging, so that the ball head 311 and the two protrusions 312 are integrally formed rather than separated, so that the present invention does not need to insert additional pins 13 during assembly. , Can effectively simplify the assembly steps, and has the advantages of reducing manufacturing time and cost.

The joint 30 of the present invention is formed with two convex parts 312 integrally formed on the opposite sides of the ball head 311 by forging. In addition to the aforementioned effects of simplifying the assembly steps and reducing the manufacturing time and cost, it can also completely solve the conventional universal sleeve. The barrel 10 utilizes the assembly structure in which the plug 13 penetrates the pin hole 123 of the joint member 12. After a period of use, the problem of friction and damage between the plug 13 and the pin hole 123 is likely to occur.

The joint 30 of the present invention is forged with two reinforcing ribs 313 at the side corresponding to each convex portion 312. The reinforcing ribs 313 connect the ball head 311 and the convex portion 312 in an integral shape. The structural strength of the protruding portion 312 is indeed improved, so that the joint member 30 can withstand long-term working conditions and has the effect of increasing the service life.

In addition, the manufacturing method provided by the present invention is not limited to the above-discussed embodiment. As shown in FIG. 7, the structure of the connector 70 according to the second embodiment of the present invention is provided. The connector 70 also has a connector end 71, The joint end 71 has a ball head 711 and two protrusions 712, which also have the effect of simplifying the assembly steps to reduce manufacturing time and cost, and can completely solve the conventional problem by inserting the plug 13 into the pin hole 123 of the joint 12 After using for a period of time, the plug 13 and the pin hole 123 are easily damaged due to friction. The difference from the first embodiment mentioned above is that the convex portion 712 of the joint 70 is cut by a processing tool. It can be made into a polygonal column shape, which can be a triangular column shape, a quadrangular column shape, or a pentagonal column shape. This embodiment takes the quadrangular column shape as an example. The design of this polygonal column shape can reduce the convex part 712 in the integral shape. The trimming work after forging is easier to manufacture.

However, the disclosures of the above embodiments are only used to illustrate the present invention, and not to limit the present invention. Therefore, all changes in numerical values or replacement of equivalent components should still belong to the scope of the present invention.

In summary, when people who are familiar with this technique can understand that this invention can clearly achieve the aforementioned purpose, it has actually complied with the provisions of the Patent Law, so they file an application in accordance with the law.

Claims (5)

A manufacturing method of a universal sleeve integrated joint piece, including the following steps: (1). Prepare materials, first prepare an unprocessed part with a predetermined length and rod diameter; (2). Cut the joint end, and then prepare the unprocessed part Use a processing machine to cut one end of the joint to form a non-circular joint end; and (3). Forging to form, use a set of forging dies to press and forge the joint end to make the joint end form a true circle A spherical head and two convex parts protruding from opposite sides of the spherical head, the two convex parts are forged and pressed into a predetermined geometric shape, and the convex part and the spherical head are integrally formed. The manufacturing method of a universal sleeve integrated joint piece according to claim 1, wherein, in step (2), the joint end is cut into a slightly oval shape. The method for manufacturing a universal sleeve integrated joint piece according to claim 1, wherein in step (3), the joint end is forged to form a cylindrical convex portion. The manufacturing method of a universal sleeve integrated joint piece according to claim 1, wherein in step (3), the joint end is forged to form a convex portion in the shape of a polygonal column. The method for manufacturing a universal sleeve integrated joint piece according to claim 1, wherein, in step (3), the joint end is forged at least one side of each convex portion to be integral with the ball head Connected ribs.

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