WO2012068741A1

WO2012068741A1 - Cutter and method for machining threads, method for machining threads on connector and machine tool

Info

Publication number: WO2012068741A1
Application number: PCT/CN2010/079180
Authority: WO
Inventors: 孙尚传; 徐晓亮; 汪方云
Original assignee: 深圳市大富网络技术有限公司
Priority date: 2010-11-24
Filing date: 2010-11-26
Publication date: 2012-05-31
Also published as: CN102120278B; CN102120278A

Abstract

A cutter (10) for machining threads comprises a screw die unit (110) and a guiding unit, wherein the screw die unit (110) is used for machining threads on a workpiece (20) to be machined, and the guiding unit is used for matching up with a guiding structure of the workpiece (20) to be machined while the screw die unit (110) is machining threads to guide the screw die unit (110). Furthermore, a machine tool, a method for machining threads and a method for machining threads on a connector are also disclosed. The cutter and method for machining threads can carry out a good guide, thus enabling the machined threads to be more accurate. The machine tool with the above cutter can improve highly the efficiency of threads machining.

Description

Thread processing tool, method, connector thread processing method and machine tool

[Technical Field]

Embodiments of the present invention relate to the field of thread processing technology, and in particular, to a thread processing tool, a thread processing method, a connector thread processing method, and a machine tool equipped with the above thread processing tool.

【Background technique】

As a frequency selection device, the cavity filter is widely used in the field of communication. Due to the special requirements of the signal transmission of the cavity filter, the technical requirements of the connector processing of the connector are relatively high.

In the prior art, commonly used mature technology connectors are separately machined and then assembled to a cavity filter. The disadvantage is that the multi-part connection structure is complicated, and the flange structure is required, which leads to cumbersome assembly and space occupation, and the screw assembly also causes an increase in cost and a poor airtightness.

In order to solve the above problems, one solution in the prior art is to integrally mold the connector and the cavity by an integral molding process (e.g., die casting), which has the advantage of occupying a small space and eliminating the need to assemble an extra flange structure.

However, in the research and practice of the prior art, the inventors of the present invention found that in the prior art, for the die-cast connector, the thread is directly die-cast, and some are die-cast into a column and then processed by cutting ( Or machining, or milling), and the two molding methods may have the following defects:

1. The direct die-casting thread and the center hole of the connector are not guaranteed to be within the tolerance band of 0.02;

2. Direct die-casting of thread-toothed die-casting will have certain die-casting defects (die casting is not full or cold), and there will be a certain proportion of products with non-standard tooth profiles;

3. Threads that are directly die-cast into columns and then formed by cutting (or machining, or milling) have a certain proportion of products with defects in sand pores due to the large machining allowance;

4. The direct die-casting thread has machining allowance for post-rigid machining. If the margin is too small, the machining will be misaligned and the tooth profile will not be standard. If the margin is too much, there will be defects in the sand hole.

Therefore, it is necessary to provide a new threading solution to meet the accuracy of connector threading. Demand.

[Summary of the Invention]

In order to solve the above problems in the prior art connector threading, the embodiment of the present invention proposes a novel threading scheme.

The technical solution adopted by the embodiment of the present invention to solve the above technical problem is to provide a thread processing tool, which comprises a die assembly and a guiding component, wherein the die component is used for thread processing of the workpiece to be processed, and the guiding component is used for guiding the workpiece The guiding structure of the workpiece to be processed is adapted to guide the die assembly during threading of the die assembly.

The embodiment of the invention further provides a machine tool, which is provided with the above-mentioned threading tool. An embodiment of the present invention further provides a thread processing method, the thread processing method comprising the steps of: fixing a workpiece to be processed to a processing station;

The machining position calibration is performed on the die assembly by the guiding of the machining tool and the adaptation of the workpiece guiding structure to be processed;

The rotational torque of the processing equipment drives the connection assembly and further drives the die assembly to thread the workpiece to be processed.

The embodiment of the present invention further provides a connector thread processing method, the connector thread processing method connector is used for a filter, and the thread processing method described above is used.

The embodiment of the present invention further provides a thread processing method for threading a workpiece to be processed, wherein the workpiece to be processed is provided with a guiding hole that is coaxial with the thread to be processed, and the die component is connected through the joint. When the component receives the rotational torque of the processing equipment and performs threading on the workpiece to be processed, the guide pin is used to guide the die assembly by guiding the positive guide hole to guide the thread.

Compared with the prior art, the thread processing tool and the thread processing method disclosed in the embodiments of the present invention have a good guiding function, so that the processed thread processing is more precise. Machine tools equipped with the above-mentioned threading tools can greatly improve the efficiency of threading.

[Description of the Drawings] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings. among them:

1 is a schematic perspective view showing a thread processing tool and a workpiece to be processed according to a preferred embodiment of the present invention;

Figure 2 is a perspective view showing the three-dimensional structure of the thread processing tool of Figure 1;

Figure 3 shows a side view of the threading tool shown in Figure 2;

Figure 4 shows a schematic cross-sectional view of the threading tool shown in Figure 2;

Fig. 5 is a schematic view showing the structure of the guide pin and the fixing plate of the thread processing tool of Fig. 2; and Fig. 6 is a schematic enlarged cross-sectional view showing the cooperation relationship between the guide pin and the fixing plate of Fig. 5.

【detailed description】

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

Embodiments of the present invention provide a thread processing tool including a die assembly and a guide member, wherein the die assembly is used for threading a workpiece to be processed, and the guide member is used for threading the die assembly, The guiding structure of the workpiece to be processed is adapted to guide the die assembly.

The machining position of the die assembly is calibrated by the adaptation of the guiding member of the machining tool and the guiding structure of the workpiece to be machined;

The rotating component of the processing device drives the connecting assembly and further drives the die assembly to perform threading on the workpiece to be processed. The embodiment of the invention further provides a connector thread processing method, the connector thread processing method connector is used for the filter, and the thread processing method described above is adopted.

The invention will now be described in detail in conjunction with the drawings and embodiments.

Embodiment 1

A threading tool. Embodiments of the present invention provide a thread processing tool including a die assembly and a guide member, wherein the die assembly is used for threading a workpiece to be processed, and the guide member is used for threading the die assembly. The guiding structure of the machined workpiece is adapted to guide the die assembly. In this embodiment, the guiding member is a guiding pin, and the guiding structure of the workpiece to be processed is a guiding hole provided at the end of the workpiece to be processed.

Embodiment 2

A threading tool. Embodiments of the present invention provide a thread processing tool. Referring to Figures 1 through 6, together, different schematic views of a threading tool and its components in accordance with a preferred embodiment of the present invention are shown.

The thread processing tool 10 provided by the embodiment of the present invention is used for threading the column-shaped workpiece 20 to be processed. As shown in Fig. 1, the connector integrally formed with the filter is threaded by the threading tool 10. The workpiece to be processed 20 is provided with a guiding hole 22 which is coaxial with the thread to be processed.

Referring to FIG. 1 to FIG. 4 together, the thread processing tool 10 provided by the embodiment of the present invention mainly includes a die assembly 110, a guiding pin 120 and a connecting component 130. Among them, the die assembly 110 is used for threading the workpiece 20 to be processed.

In the present embodiment, the guiding pin 120 is assembled with the connection assembly 130 for receiving the rotational torque of the processing device and transmitting the rotational torque to the die assembly 110 through the guiding pin 120. The knives processing tool 10 adjusts the position of the die assembly 110 by adjusting the guide pin 120 and the guide hole when the threading is performed, and using the gap as the adjustment space.

In another embodiment, the connecting assembly 130 is assembled with the die assembly 110, that is, the connecting assembly 130 and the die assembly 110 are gap-fitted by other twisting or swinging connections, so that the die assembly 110 can be slightly twisted or oscillated relative to the connecting assembly 130. Adjusting, the connecting assembly 130 receives the rotational torque of the processing device and transmits the rotational torque to the die assembly 110, and the threading tool 10 is adjusted by the matching of the guiding pin 120 and the guiding hole 22 during threading. The space adjusts the position of the die assembly 110.

Specifically, referring to FIG. 4, in a preferred embodiment, the die assembly 110 includes a die sleeve 112 and a die 114 secured to the die sleeve 112. The front end of the die sleeve 112 is provided with a stepped cavity 1121, and the rear part of the die sleeve 112 is provided with a polygonal through hole 1122, and the die 114 is fixed in the stepped cavity 1121. Among them, the die is a standard piece purchased separately, and after the die is assembled in the step cavity 1121, it can be fastened by a side screw (not shown). Of course, for threading that does not require a precision of 4 inches, a movable die, that is, a split die, can be used to set the tapping diameter of the die by spiral adjustment.

In a preferred embodiment, the pilot pin 120 has a polygonal shaft segment that mates with the through hole 1122, the shaft segment mates with the through hole 1122 for rotational torque transmission, and the through hole 1122 can be a regular polygon, such as a regular quadrilateral or a regular six. A shape such as a polygon or a regular octagon. The pilot pin 120 is accordingly provided as a shaft segment having a regularogram, a regular hexagon or a regular octagon. In addition, in order to better fit the workpiece to be processed, the guide pin 120 is provided with a cone shape, a hemispherical shape or a truncated cone shaped front that fits the guide hole 22.

With continued reference to FIG. 4, in a preferred embodiment, the attachment assembly 130 includes a clamping portion 132 for clamping by a processing device (not shown), and a force coupled to the clamping portion 132 for transmitting rotational torque of the processing device. The portion 134 and the fixing plate 140 fixed to the end of the force guiding portion 134.

In the embodiment, the fixing plate 140 has a guiding hole 142 (shown in FIG. 6 ) corresponding to the through hole 1122 for transmitting the rotating torque, and the guiding hole 142 and the guiding pin 120 are radially gap-fitted. The guiding pin 120 is assembled with the connecting component 130, that is, the die assembly 110 is radially slidably engaged with the guiding pin 120 through the guiding hole 142 to be slightly oscillated relative to the connecting component 130. In specific practice, The radial clearance can be from 0.2 mm to 0.4 mm. For connector threading of the filter, the radial clearance is approximately 0.3 mm. Due to the presence of the radial clearance, the pilot pin 120 is allowed to adaptively feed within the pilot hole 22 and is correspondingly offset as the pilot hole 22 is radially offset. The deviation of the guiding pin 120 further guides the offset tapping of the die assembly 110. Therefore, the thread which is coaxial with the guiding hole 22 can be processed correspondingly, and the flexible processing of the thread is realized. The pilot holes 142 are correspondingly in the shape of a regular quadrangle, a regular hexagon or a regular octagon.

Referring to FIG. 5 to FIG. 6, FIG. 5 is a schematic structural view of the guiding pin 120 and the fixing plate 140 of FIG. 2, and FIG. 6 is a schematic enlarged cross-sectional view of the guiding pin 120 and the fixing plate 140 of FIG. As shown in Figs. 5 and 6, in the preferred embodiment, the through hole 1122, the shaft segment and the pilot hole 142 are hexagonal. As will be readily understood by those skilled in the art, the force transmitting portion 134 transmits the rotational torque of the processing apparatus to the pilot pin 120 through the fixed plate 140 and is further transmitted to the die assembly 110 through the pilot pin 120.

In a preferred embodiment, a first spring 150 is further disposed between the fixing plate 140 and the guiding portion 134. The guiding pin 120 extends through the fixing plate 140 and is connected to the first spring 150 at an end close to the fixing plate 140. Maintain elastic expansion and contraction during threading. A second spring 160 is further disposed in the stepped cavity 1121. The guiding pin 120 is disposed through the second spring 160. The second spring 160 is further disposed in the stepped cavity of the second spring 160 and is coupled to the second spring 160 at an end adjacent to the die 114. Maintains elastic expansion and contraction during threading. At this time, it is necessary to provide a locking member or a shoulder on the guiding pin 120 to ensure the elastic expansion and contraction relationship between the guiding pin 120 and the guiding portion 134 and the die assembly 110, and at the same time, the guiding pin 120 is not caused. The force guiding portion 134 or the die assembly 110 is separated from each other. The elastic expansion and contraction relationship enables the guiding pin 120 to be axially slidably engaged with the die assembly 110 and the fixing plate 140, and can adapt to different thread lengths to be processed and different guiding hole depths, thereby ensuring thread precision.

In summary, those skilled in the art will readily understand that the rotational torque of the processing device is sequentially performed by the clamping portion 132, the guiding portion 134, the fixing plate 140, the guiding hole 142, the guiding pin 120, the die sleeve 112, and the die 114. Transfer, threading the workpiece to be machined. Since the guiding pin 120 has a radial gap with respect to the guiding hole 142, and the guiding pin 120 is axially slidably engaged with the die assembly 110, the thread processing tool 10 can achieve a flexible machining effect and can ensure the thread. Precision. Embodiment 3

A machine tool. Embodiments of the present invention also provide a machine tool including a CNC (Computer numerical control) machine tool and a general machine tool. The machine tool is provided with the threading tool 10 described in the second embodiment. The efficiency of thread processing and the precision of thread processing can be greatly improved.

Specifically, the rotational torque provided by the CNC machine tool is sequentially transmitted through the clamping portion, the guiding portion, the fixing plate, the guide hole, the guiding pin, the die sleeve, and the die, and the workpiece to be processed is threaded. At the time of processing, as the machining tool advances, the pilot pin is elastically compressed and compressed by the first spring and the second spring, and after the machining is completed, the pilot pin is reset by the elastic action of the first spring and the second spring.

Embodiment 4

A thread processing method. The embodiment of the invention further provides a thread processing method, comprising the following steps:

Sl, fixing the workpiece to be processed to the processing table;

S2, performing machining position calibration on the die assembly by adapting the guiding member of the machining tool and the guiding structure of the workpiece to be processed;

S3, through the rotating torque of the processing equipment, drives the connecting component and further drives the die assembly to thread the workpiece to be processed.

That is, during machining, the rotational torque provided by the CNC machine is sequentially transmitted through the clamping portion, the guiding portion, the fixing plate, the guide hole, the guiding pin, the die sleeve, and the die, and the workpiece to be processed is threaded. At the time of processing, as the machining tool advances, the pilot pin is elastically compressed and compressed by the first spring and the second spring, and after the machining is completed, the pilot pin is reset by the elastic action of the first spring and the second spring.

In this embodiment, the workpiece to be processed is a die-cast filter cavity, and the filter cavity includes an integrally die-cast connector, and the workpiece to be processed is threaded, including externally threading the connector integrally molded with the filter cavity. machining.

Embodiment 5

A connector thread processing method. Embodiments of the present invention also provide a connector thread processing method. The connector is used for a filter, especially for a cavity filter, and the connector threading method is implemented The thread processing method described in Example 4.

In a preferred embodiment, the workpiece is die-cast to a rough profile of the connector threads, and then the threading process described in Example 4 is employed. In this way, it is possible to avoid the processing misalignment in the prior art, the irregularity of the tooth profile, and the presence of defects such as sand pores.

Since the guide pin and the die assembly can be provided with a gap of 0.3 mm on one side, the degree of freedom of the guide pin in positioning the thread can achieve the effect of flexible processing, and can ensure the accuracy and yield of the tooth type. It can greatly improve the processing efficiency of screw-type processing of such machine-added products.

Embodiment 6

A thread processing method. The embodiment of the invention further provides a thread processing method for threading a workpiece to be processed, and the workpiece to be processed is provided with a guiding hole which is coaxial with the thread to be processed, and is characterized in that: the die assembly is received through the connecting component When the rotational torque of the processing equipment is threaded to the workpiece to be machined, the guide pin is used to guide the die assembly by guiding the positive guide hole to guide the thread.

In a preferred embodiment, when the threading is performed, the die assembly and the connecting component maintain a clearance fit, and when the threading tool is threaded, the guiding pin and the guiding hole are adapted, and the gap is used as the adjusting space for the die assembly. Position adjustment.

In summary, those skilled in the art will readily appreciate that the embodiments of the present invention disclose a novel idea of thread processing. The thread processing tool and the thread processing method disclosed in the embodiments of the present invention have a good guiding function, so that the processed thread processing is performed. More precise. Machines equipped with the above-mentioned threading tools can greatly improve the efficiency of threading.

It should be noted that the terms “first” and “second” mentioned in the embodiment of the present invention are only used as needed, and are not limited to this in practice, and the text symbol can be Used interchangeably.

In the above-described embodiments, the present invention has been exemplarily described, and various modifications of the present invention can be made without departing from the spirit and scope of the invention.

Claims

Rights request

A thread processing tool, comprising: a die assembly and a guide member, wherein the die assembly is used for threading a workpiece to be processed;

The guiding member is adapted to guide the die assembly with the guiding structure of the workpiece to be machined when the die assembly is threaded.

The threading tool according to claim 1, wherein the guiding member is a guiding pin, and the guiding structure is a guiding hole.

3. The threading tool according to claim 2, wherein: the threading tool further comprises a connection assembly, the connection assembly is assembled with the die assembly, and the connection assembly is configured to receive rotation of the processing device Transducing and transmitting the rotational torque to the die assembly, the threading tool is adapted to match the guide hole by the guide pin during the threading process, and the gap is used as an adjustment space pair The position of the die assembly is adjusted.

4. The threading tool according to claim 2, wherein the threading tool further comprises a connecting component, the guiding pin extends through the die assembly, and the guiding pin is assembled with the connecting component The connecting assembly is configured to receive a rotational torque of the processing device and transmit the rotational torque to the die assembly through the guide pin, and the threading tool passes the guide pin and the The matching of the guiding holes is performed, and the position of the die assembly is adjusted by using the gap as an adjustment space.

The threading tool according to claim 4, wherein: the die assembly includes a die sleeve assembled with the connecting component and a die disposed in the die sleeve, and the front portion of the die sleeve is provided a stepped cavity, a polygonal through hole is formed in the rear portion, the die is fixed in the step cavity, the guiding pin has a polygonal shaft segment matching the through hole, and the shaft segment cooperates with the through hole For rotary torque transfer.

The threading tool according to claim 4 or 5, wherein: the connecting assembly includes a clamping portion for clamping the processing device, and is coupled to the clamping portion for transferring the processing device The driving portion of the rotating torque.

7. The threading tool according to claim 6, wherein: the connecting assembly further comprises a fixing plate, the fixing plate is fixed to the end of the guiding portion and has a corresponding to the through hole. And a guiding hole for transmitting the rotating torque, the guiding hole is radially gap-fitted with the guiding pin.

The threading tool according to claim 7, wherein: a first spring is disposed between the fixing plate and the guiding portion, and the guiding pin penetrates the fixing plate and is close to the One end of the fixing plate is coupled to the first spring to maintain elastic expansion and contraction during threading.

9. The threading tool according to claim 5, wherein: the step cavity is provided with a second spring, the guiding pin extends through the second spring and is adjacent to the end of the die The second spring is snapped to maintain elastic expansion and contraction during threading.

The threading tool according to any one of claims 2 to 5, characterized in that: the guiding pin is provided with a cone shape, a hemispherical shape or a truncated cone shaped front end adapted to the guiding hole .

The threading tool according to claim 3 or 4, wherein the gap is 0.2 mm to 0.4 mm.

12. The threading tool according to claim 11, wherein: the gap is 0.3 mm.

A machine tool, characterized in that the machine tool is provided with a threading tool according to any one of claims 1 to 12.

A thread processing method, comprising the steps of:

Fixing the workpiece to be processed on the processing table;

The connecting assembly is driven by the rotational torque of the processing device and further drives the die assembly to thread the workpiece to be machined.

The thread processing method according to claim 14, wherein the workpiece to be processed is a die-cast filter cavity, and the filter cavity comprises an integrally die-cast connector; The threading of the workpiece to be processed includes externally processing the connector integrally molded with the filter cavity.

A connector thread processing method, the connector being used for a filter, characterized in that the connector thread processing method employs the thread processing method according to claim 14 or 15.

18. The connector thread processing method according to claim 17, wherein: before the threading method according to claim 15 or 16, the connector to be processed is die-cast into a connector having a rough outline. Thread.

19. A thread processing method for threading a workpiece to be machined, the workpiece to be machined having a guide hole coaxially with the thread to be machined, wherein: the die assembly receives the processing equipment through the connection assembly When the rotational torque is used to thread the workpiece to be processed, the guide pin is pressed against the guide hole to guide the die assembly to machine the thread.

20. The thread processing method according to claim 19, wherein the die assembly maintains a clearance fit with the joint assembly during the threading process, and the threading cutter passes the threading process The guiding pin is adapted to the guiding hole, and the position of the die assembly is adjusted by using the gap as an adjustment space.