RF connector screw necking jig

Abstract

The utility model provides an RF connector screw necking jig. An RF connector screw comprises a head part, a flange part and a rod part, wherein the head part, the flange part and the rod part are sequentially connected in the axial direction, and the rod part is composed of at least two petals. The RF connector screw necking jig comprises a pneumatic chuck; the number of the pneumatic clamping jaws is three, the three pneumatic clamping jaws are arranged on the pneumatic chuck in a circumferential array mode, and each pneumatic clamping jaw is in sliding fit with the pneumatic chuck; each pneumatic clamping jaw is provided with an abutting piece which can abut against the outer wall of the rod portion of the RF connector screw. And the core rod is arranged on the pneumatic chuck and provided with a working part extending to the position between the abutting pieces in the height direction of the pneumatic chuck, and the working part is used for abutting against the inner wall of the rod part of the RF connector screw. The RF connector screw necking jig provided by the utility model is simple to operate, and can quickly and effectively finish petal piece necking shaping operation of the RF connector screw, so that the specification of the rod part of the RF connector screw meets the tolerance requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of fastener processing, and in particular relates to a RF joint screw shrinking fixture. Background Art

[0002] like Figure 1 As shown, an RF connector screw for an oil pipeline pressure gauge includes a head, a flange and a rod connected in sequence along the axial direction, and a threaded hole extends inward from one end of the head away from the rod for fastening connection with other components of the oil pipeline pressure gauge, and the rod is a hollow structure, and the rod wall is symmetrically milled with "cross" grooves (the rod as a whole is composed of 4 petals), which is used to connect with the male connector outside the oil pipeline pressure gauge to transmit electrical signals and data signals.

[0003] However, after the milling, burrs will remain around the "cross" groove of the RF connector screw. Therefore, the milled RF connector screw needs to be ground and deburred, and then electroplated for corrosion protection. Whether it is grinding and deburring or electroplating, it will have a certain impact on the specifications of the rod, which is mainly manifested in the deformation and warping of the petals that make up the rod, thereby affecting the outer diameter and inner diameter of the rod. The main function of the petal is to enable the male connector to be inserted into the inner hole of the rod and connect stably, otherwise it will lead to poor transmission performance of electrical signals and data signals. Therefore, the inner diameter and outer diameter of the rod must meet the requirements, and the screws are shipped in batches. Therefore, how to quickly and effectively shrink the deformed petals so that the inner and outer diameters of the rod are within the tolerance range is an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the main purpose of the utility model is to provide an RF connector screw shrinking jig. The provided RF connector screw shrinking jig is simple to operate, and can quickly and effectively complete the petal shrinking and shaping operation of the RF connector screw, so that the rod specifications of the RF connector screw meet the tolerance requirements.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides an RF joint screw shrinking jig, wherein the RF joint screw comprises a head, a flange portion and a rod portion consisting of at least two petals connected in sequence along the axial direction; the RF joint screw shrinking jig comprises:

[0007] Pneumatic chuck;

[0008] Pneumatic chucks, there are three of the pneumatic chucks, and the three pneumatic chucks are arranged in a circumferential array on the pneumatic chuck, and each pneumatic chuck is slidably matched with the pneumatic chuck; an abutting member capable of abutting against the outer wall of the rod portion of the RF connector screw is installed on each pneumatic chuck;

[0009] A mandrel, the mandrel is arranged on the pneumatic chuck and has a working portion extending in the height direction of the pneumatic chuck to between the abutting members, and the working portion is used for abutting against the inner wall of the rod portion of the RF connector screw.

[0010] As a further description of the above technical solution, the mandrel further includes a bearing portion and a connecting portion, and in the height direction of the pneumatic chuck, the bearing portion is connected between the working portion and the connecting portion;

[0011] The diameter of the bearing portion is larger than that of the working portion;

[0012] The connecting portion is connected to a backing plate provided on the pneumatic chuck.

[0013] As a further description of the above technical solution, each pneumatic chuck includes a sliding portion and a claw body portion assembled on the sliding portion, and three sliding grooves are formed in the pneumatic chuck and the backing plate;

[0014] The sliding portion of each pneumatic chuck is correspondingly slidably connected in one of the sliding grooves;

[0015] Each abutting member is correspondingly installed on one of the claw body portions.

[0016] As a further description of the above technical solution, the opposite end faces of the three abutting members are all in an arc shape sunken inward.

[0017] As a further description of the above technical solution, when the three pneumatic chucks slide centripetally relative to the pneumatic chuck to a preset working position, the sunken area of the abutting member and the working portion of the mandrel form an annular clamping space to clamp the rod portion of the RF connector screw, so as to shrink and shape the petals of the rod portion.

[0018] As a further description of the above technical solution, the outer diameter of the annular clamping space is smaller than the cross-sectional width of the flange portion of the RF connector screw;

[0019] The length of the annular clamping space in the height direction of the pneumatic chuck is not less than the length of the rod portion.

[0020] As a further description of the above technical solution, the length of the working portion of the mandrel in the height direction of the pneumatic chuck is smaller than the length of the rod portion of the RF connector screw.

[0021] As a further description of the above technical solution, the outer diameter of the annular clamping space is 4.09 mm - 4.11 mm, and the inner diameter is 2.36 mm - 2.38 mm.

[0022] As a further description of the above technical solution, the annular clamping space has a first space and a second space that are connected. In the height direction of the pneumatic chuck, the second space is located between the first space and the pneumatic chuck;

[0023] The inner diameter of the first space gradually decreases from the end away from the second space to the end toward the second space.

[0024] As a further description of the above technical solution, the taper of the second space is 1°.

[0025] By means of the above technical solution, the outstanding effect of the present utility model is:

[0026] The RF connector screw necking fixture provided by the present utility model includes a pneumatic chuck, three pneumatic jaws, and a mandrel. The three pneumatic jaws are arranged on the pneumatic chuck in a circumferential array, and each pneumatic jaw is slidably matched with the pneumatic chuck; a contact member capable of abutting against the outer wall of the rod portion of the RF connector screw is installed on each pneumatic jaw; the mandrel is arranged on the pneumatic chuck and has a working portion extending in the height direction of the pneumatic chuck to between the contact members. The working portion is used to abut against the inner wall of the rod portion of the RF connector screw. The operator can directly hold the head or flange portion of the RF connector screw (whose rod portion is to be necked and shaped), sleeved the rod portion composed of at least two petals on the working portion of the mandrel included in the fixture, and then start the pneumatic chuck, so that the three pneumatic jaws can simultaneously slide relative to the pneumatic chuck and close inwards, driving the contact members installed on the three pneumatic jaws to simultaneously abut against the outer wall of the rod portion of the RF connector screw, and thus cooperate with the working portion of the mandrel to limit from both the inside and outside of the rod portion, perform necking and shaping operations on each petal forming the rod portion, so that both the inner diameter and the outer diameter of the rod portion are within the tolerance range; then drive the pneumatic jaws to move in the reverse direction by the pneumatic chuck, and the RF connector screw that has completed the necking and shaping operation can be removed from the mandrel included in the fixture along the height direction of the pneumatic chuck. The overall operation process is simple and convenient, and it is more suitable for the mass production of RF connector screws. Description of the Drawings

[0027] Figure 1 It is a cross-sectional view of an RF connector screw in the prior art;

[0028] Figure 2 It is an exploded view of the RF connector screw necking fixture in the embodiment of the present utility model;

[0029] Figure 3Schematic assembly structure diagram of the RF connector screw necking fixture (omitting a sliding part and an abutting part) in the embodiment of the present utility model;

[0030] Figure 4 Top view of the RF connector screw necking fixture in the embodiment of the present utility model;

[0031] Figure 5 For Figure 4 A - A sectional view of

[0032] Figure 6 Sectional view of the abutting part in the RF connector screw necking fixture in the embodiment of the present utility model.

[0033] Explanation of the reference numerals in the drawings:

[0034] 1. RF interface screw; 11. Head; 12. Flange part; 13. Rod part; 131. Flap; 2. Pneumatic chuck; 3. Pneumatic jaw; 31. Sliding part; 32. Jaw body part; 4. Abutting part; 5. Mandrel; 51. Working part; 52. Bearing part; 53. Connecting part; 6. Backing plate; △. Taper of the second space. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The following describes its implementation manners according to the overall structure of the present utility model.

[0037] Please refer to Figures 1 to 6, the present utility model discloses a shrinkage mouth fixture for an RF connector screw. The RF connector screw includes a head 11, a flange portion 12, and a rod portion 13 composed of at least two petal pieces 131 connected in sequence along the axial direction. The shrinkage mouth fixture for the RF connector screw includes:

[0038] A pneumatic chuck 2;

[0039] Pneumatic jaws 3. There are three of the pneumatic jaws 3, and the three pneumatic jaws 3 are arranged in a circumferential array on the pneumatic chuck 2, and each pneumatic jaw 3 is slidably matched with the pneumatic chuck 2; An abutting member 4 capable of abutting against the outer wall of the rod portion 13 of the RF connector screw is installed on each pneumatic jaw 3;

[0040] A mandrel 5 is arranged on the pneumatic chuck 2 and has a working portion 51 extending in the height direction of the pneumatic chuck 2 between the abutting members 4. The working portion 51 is used to abut against the inner wall of the rod portion 13 of the RF connector screw.

[0041] With the above structure, an operator can directly hold the head 11 or the flange portion 12 of the RF connector screw (the rod portion 13 petal pieces 131 to be shrinkage mouth shaped), sleeved the rod portion 13 composed of at least two petal pieces 131 on the working portion 51 of the mandrel 5, and then start the pneumatic chuck 2, so that the three pneumatic jaws 3 can slide synchronously relative to the pneumatic chuck 2 and close inwards at the same time, driving the abutting members 4 installed on the three pneumatic jaws 3 to simultaneously abut against the outer wall of the rod portion 13 of the RF connector screw, and thus cooperate with the working portion 51 of the mandrel 5 to limit from both the inside and outside of the rod portion 13, perform shrinkage mouth and shaping operations on each petal piece 131 forming the rod portion 13, so that both the inner diameter and the outer diameter of the rod portion 13 are within the tolerance range; then drive the pneumatic jaws 3 to move in the reverse direction by the pneumatic chuck 2, and the RF connector screw that has completed the shrinkage mouth and shaping operation can be removed from the mandrel 5 included in the fixture along the height direction of the pneumatic chuck 2. The overall operation process is simple and convenient, and is more suitable for mass production of the RF connector screw.

[0042] Please refer to Figure 1 , specifically, in this embodiment, the RF connector screw includes a head 11, a flange portion 12, and a rod portion 13 connected coaxially from top to bottom in sequence. The cross-section of the flange portion 12 is hexagonal, and the rod portion 13 is composed of 4 petal pieces 131.

[0043] Please refer to Figures 2 to 5Specifically, in this embodiment, the mandrel 5 further includes a bearing portion 52 and a connecting portion 53, and the bearing portion 52 connects the lower end of the working portion 51 and the upper end of the connecting portion 53 in the vertical direction, wherein the diameter of the bearing portion 52 is larger than the working portion 51; the connecting portion 53 is connected to the pad 6 provided on the pneumatic chuck 2, and the upper end surface of the bearing portion 52 limits the lowest position of the lower end of the RF connector screw after it is sleeved on the working portion 51. It should be understood that in order to ensure the consistency of the shrinking shaping of the four petals 131 constituting the rod 13, the working portion 51 of the mandrel 5 is located at the central axis position surrounded by the three abutment members 4.

[0044] Specifically, in the present embodiment, the pad 6 is threadedly connected to the pneumatic chuck 2 by fasteners, so as to form three slide grooves together with the pneumatic chuck 2, and each of the pneumatic jaws 3 includes a sliding portion 31 and a claw body 32 assembled on the sliding portion 31, and the sliding portion 31 of each of the pneumatic jaws 3 is correspondingly slidably connected in one of the slide grooves; each of the abutment members 4 is correspondingly installed at the end facing each other of the claw body 32.

[0045] See also Figures 2 to 4 Specifically, in the present embodiment, the end surfaces of the three abutting members 4 facing each other are all in the shape of an inwardly concave arc, so as to be adapted to abut against the outer wall of the rod portion 13 and accurately control the outer diameter of the rod portion 13 .

[0046] Specifically, in the present embodiment, when the three pneumatic jaws 3 slide centripetally relative to the pneumatic chuck 2 and retract to a preset working position, the recessed area of ​​the abutment 4 and the working portion 51 of the core rod 5 will form an annular clamping space for clamping the rod 13 of the RF connector screw, thereby accurately limiting the four petals 131 constituting the rod 13 from the inner and outer sides of the rod 13 at the same time, so that it can be shrunken and shaped. After the shrinking and shaping is completed, the inner diameter and outer diameter of the rod 13 both meet the preset tolerance size requirements, and then the three pneumatic jaws 3 slide outward relative to the pneumatic chuck 2, synchronously driving the abutment 4 to cancel the abutment effect on the outer wall of the rod 13, and then the RF connector screw is removed from the working portion 51 of the core rod 5 in the vertical direction, and the shrinking and shaping operation of the next RF connector screw can be carried out.

[0047] See also Figure 3 and Figure 5Specifically, in this embodiment, the outer diameter of the annular clamping space is smaller than the cross-sectional width of the flange portion 12 of the RF connector screw, thereby ensuring that after the RF connector screw is sleeved on the working portion 51 of the core rod 5, the lower end surface of the flange portion 12 thereof is abutted against the upper end surface of the abutment 4, and only the rod portion 13 thereof enters the annular clamping space; the length of the annular clamping space along the height direction of the pneumatic chuck 2 is not less than the length of the rod portion 13, thereby ensuring that the annular clamping space has sufficient length to accommodate the rod portion 13, and then the petals 131 constituting the rod portion 13 are shrunken and shaped.

[0048] Specifically, in this embodiment, the length of the working portion 51 of the mandrel 5 along the vertical direction is less than the length of the rod 13 of the RF connector screw, which extends from bottom to top, and the petals 131 constituting the rod 13 extend from top to bottom. Under this condition, the requirements of the shrinking shaping operation can be met. For example, if the length of the rod 13 is 9.7 mm, the shrinking length requirement is 2 mm, and the length of the working portion 51 of the mandrel 5 is 6 mm.

[0049] Specifically, in this embodiment, the outer diameter of the annular clamping space is set to 4.00 mm, and the inner diameter thereof is set to 2.37 mm, thereby ensuring that the outer diameter and the inner diameter of the lower end of the rod 13 can be controlled within a preset tolerance range. Of course, in other embodiments, the outer diameter of the annular clamping space can also be set to 4.09 mm-4.11 mm, and the inner diameter thereof can be set to 2.36 mm-2.38 mm.

[0050] See also Figure 3 , Figure 5 as well as Figure 6 Specifically, in this embodiment, the annular clamping space has a first space and a second space that are connected. In the height direction of the pneumatic chuck 2, the second space is located between the first space and the pneumatic chuck 2. The inner diameter of the first space gradually decreases from the end away from the second space to the end facing the second space, so that the cross-section of the annular clamping space is a shape that is narrow at the bottom and wide at the top, which is more conducive to controlling the outer diameter of the shrinkage within a length of 2mm at the lower end of the rod 13. More specifically, in this embodiment, the taper △ of the second space is 1°, and the annular clamping space has a taper, which is more convenient for the rod 13 of the RF connector screw to be inserted and removed relative to the working part 51 of the mandrel 5.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any changes, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A RF connector screw shrinking jig, the RF connector screw comprising a head, a flange and a stem consisting of at least two petals connected in sequence along the axial direction; characterized in that: The RF connector screw shrinking fixture comprises: Pneumatic chuck; Pneumatic jaws, there are three pneumatic jaws, the three pneumatic jaws are arranged on the pneumatic chuck along a circumferential array, and each of the pneumatic jaws is slidably matched with the pneumatic chuck; each of the pneumatic jaws is equipped with an abutment member capable of abutting against the outer wall of the rod of the RF connector screw; A core rod is arranged on the pneumatic chuck and has a working portion extending along the height direction of the pneumatic chuck to between the abutting members, wherein the working portion is used to abut against the inner wall of the rod of the RF connector screw.

2. The RF connector screw shrinking jig according to claim 1, characterized in that: The mandrel further comprises a bearing portion and a connecting portion, wherein the bearing portion is connected between the working portion and the connecting portion in the height direction of the pneumatic chuck; The diameter of the bearing portion is larger than that of the working portion; The connecting portion is connected to a pad provided on the pneumatic chuck.

3. The RF connector screw shrinking jig according to claim 2, characterized in that: Each of the pneumatic chucks comprises a sliding portion and a chuck body portion assembled on the sliding portion, and the pneumatic chuck and the backing plate form three slide grooves; The sliding portion of each of the pneumatic claws is correspondingly slidably connected in one of the slide grooves; Each of the abutting members is correspondingly mounted on one of the claw bodies.

4. The RF connector screw shrinking jig according to claim 3, characterized in that: The end surfaces of the three abutting members facing each other are all in an inwardly concave arc shape.

5. The RF connector screw shrinking jig according to claim 4, characterized in that: When the three pneumatic jaws slide centripetally relative to the pneumatic chuck to a preset working position, the recessed area of ​​the abutment member and the working portion of the core rod form an annular clamping space to clamp the rod of the RF connector screw, thereby shrinking and shaping the petals of the rod.

6. The RF connector screw shrinking jig according to claim 5, characterized in that: The outer diameter of the annular clamping space is smaller than the cross-sectional width of the flange portion of the RF connector screw; The length of the annular clamping space along the height direction of the pneumatic chuck is not less than the length of the rod.

7. The RF connector screw shrinking jig according to claim 6, characterized in that: The length of the working portion of the mandrel along the height direction of the pneumatic chuck is smaller than the length of the rod portion of the RF connector screw.

8. The RF connector screw shrinking jig according to claim 5, characterized in that: The outer diameter of the annular clamping space is 4.09 mm-4.11 mm, and the inner diameter is 2.36 mm-2.38 mm.

9. The RF connector screw shrinking jig according to claim 5, characterized in that: The annular clamping space comprises a first space and a second space which are connected to each other, and in the height direction of the pneumatic chuck, the second space is located between the first space and the pneumatic chuck; An inner diameter of the first space gradually decreases from an end thereof facing away from the second space to an end thereof facing the second space.

10. The RF connector screw shrinking jig according to claim 9, characterized in that: The taper of the second space is 1°.

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