阅读说明：本技术 管件装夹工作台 (Pipe fitting clamping workbench ) 是由 郭毅军 张新云 王宴斌 陈亚洁 于 2020-12-31 设计创作，主要内容包括：为了解决现有技术中通过流体磨料抛光管件内壁效率低下的问题,本发明提供一种管件装夹工作台,包括工装支座,工装支座上设置有两个支撑单元,所述支撑单元内设置有供磨料流通的通腔；两个支撑单元之间还设置有管件工装,所述管件工装上设置有第一端盖和第二端盖,且第一端盖和第二端盖上对应设置有至少两组的管件安装孔,每组管件安装孔用于对应卡合一个管件；其中一个支撑单元的通腔与所述第一端盖对应连接,另一个支撑单元的通腔与所述第二端盖对应连接。本申请在管件工装上设置有至少两组的管件安装孔,其中多个管件可同时卡合在对应的管件安装孔上,磨料从第一端盖同时进入多个管件安装孔,同时完成对多个管件的磨削。(In order to solve the problem that the efficiency of polishing the inner wall of a pipe fitting through a fluid abrasive is low in the prior art, the invention provides a pipe fitting clamping workbench which comprises a tool support, wherein two supporting units are arranged on the tool support, and a through cavity for the abrasive to circulate is arranged in each supporting unit; a pipe fitting tool is further arranged between the two supporting units, a first end cover and a second end cover are arranged on the pipe fitting tool, at least two groups of pipe fitting mounting holes are correspondingly arranged on the first end cover and the second end cover, and each group of pipe fitting mounting holes is used for correspondingly clamping a pipe fitting; the through cavity of one of the supporting units is correspondingly connected with the first end cover, and the through cavity of the other supporting unit is correspondingly connected with the second end cover. This application is provided with at least two sets of pipe fitting mounting holes on pipe fitting frock, and wherein a plurality of pipes can block simultaneously on the pipe fitting mounting hole that corresponds, and the grinding material gets into a plurality of pipe fitting mounting holes simultaneously from first end cover, accomplishes the grinding to a plurality of pipes simultaneously.)

1. A pipe fitting clamping workbench is characterized by comprising a tool support, wherein two supporting units are arranged on the tool support, and a through cavity for abrasive to flow through is formed in each supporting unit; a pipe fitting tool is further arranged between the two supporting units, a first end cover and a second end cover are arranged on the pipe fitting tool, at least two groups of pipe fitting mounting holes are correspondingly arranged on the first end cover and the second end cover, and each group of pipe fitting mounting holes is used for correspondingly clamping a pipe fitting; the through cavity of one of the supporting units is correspondingly connected with the first end cover and communicated with the inner cavity of the pipe fitting, and the through cavity of the other supporting unit is correspondingly connected with the second end cover and communicated with the inner cavity of the pipe fitting.

2. A pipe fitting clamping table as claimed in claim 1, wherein the support unit comprises a base, a tool chuck is sleeved in the base, and a through cavity is formed in the tool chuck.

3. The pipe fitting clamping workbench according to claim 2, wherein the tool chuck comprises a tool connecting end and a pipeline connecting end, the tool connecting end is provided with a first groove, and the first groove corresponds to a pipe fitting tool.

4. The pipe fitting clamping workbench according to claim 2, wherein a pressure gauge for measuring the pressure of the fluid in the through cavity is further arranged at the tool connecting end of the tool chuck.

5. The pipe fitting clamping workbench according to claim 2, wherein the base is further provided with a locking screw, and the tool chuck is further provided with a sliding groove, wherein the locking screw is matched with the sliding groove.

6. The pipe fitting clamping workbench according to claim 1, wherein the supporting unit is further provided with an adjusting mechanism, the adjusting mechanism comprises an adjusting nut and an adjusting nut seat, the adjusting nut is in threaded connection with the tool chuck, and a protrusion is arranged at the front end of the adjusting nut; the adjusting nut seat is fixedly connected with the base, a second groove is formed in the adjusting nut seat, and the protrusion is matched with the second groove.

7. The pipe fitting clamping workbench according to claim 6, further comprising more than one adjusting handle, wherein the adjusting handle is connected with the rear end of the adjusting nut.

8. A pipe fitting clamping workbench according to any one of claims 1-7, wherein a positioning block for limiting a pipe fitting tool is further provided at the tool connecting end of the tool chuck.

9. A pipe fitting clamping workbench according to any one of claims 1 to 7, wherein the pipe fitting tool further comprises a support body, wherein a first end cap is connected to one side of the support body, and a second end cap is connected to the other side of the support body.

10. The pipe fitting clamping workbench according to claim 9, wherein a tool bracket is further sleeved on the support body.

Technical Field

The invention relates to the field of pipe fitting machining, in particular to a clamping structure for polishing the inner wall of a pipe fitting by fluid, and particularly relates to a pipe fitting clamping workbench.

Background

The pipe fitting is widely applied to various industrial conveying pipelines and used as parts of various mechanical structures, and the polishing of the inner wall of the pipe fitting is a difficult point of industrial processing. Abrasive flow polishing developed in recent years is a non-traditional finishing method, and utilizes semi-solid fluid abrasive to repeatedly extrude the surface of the inner wall of a pipe fitting under high pressure, so that abrasive particles grind and remove microscopic unevenness on the surface of a workpiece, and the surface finish of the inner wall of the pipe fitting is improved.

In the prior art, as disclosed in chinese patent CN111531462A, a tubular workpiece (hereinafter referred to as a tubular member) is clamped in an inner cavity of a tubular fixture, rubber pads are disposed at left and right ends of the tubular fixture, a left end of the left rubber pad is mounted in a left extruding pipe, a right end of the right rubber pad is mounted in a right extruding pipe, a left end of the tubular member is mounted in the left rubber pad, and a right end of the tubular member is mounted in the right rubber pad.

However, the tool structure can only clamp one pipe at a time, which causes low polishing efficiency; therefore, how to improve the pipe processing efficiency is a problem to be solved by those skilled in the art.

Disclosure of Invention

The invention provides a pipe fitting clamping workbench, aiming at solving the problem that the efficiency of polishing the inner wall of a pipe fitting through a fluid abrasive is low in the prior art, and aiming at improving the polishing efficiency of the pipe fitting.

The technical scheme adopted by the invention for solving the technical problems is as follows: a pipe fitting clamping workbench comprises a tool support, wherein two supporting units are arranged on the tool support, and a through cavity for abrasive to flow through is formed in each supporting unit; a pipe fitting tool is further arranged between the two supporting units, a first end cover and a second end cover are arranged on the pipe fitting tool, at least two groups of pipe fitting mounting holes are correspondingly arranged on the first end cover and the second end cover, and each group of pipe fitting mounting holes is used for correspondingly clamping one pipe fitting; the through cavity of one of the supporting units is correspondingly connected with the first end cover and communicated with the inner cavity of the pipe fitting, and the through cavity of the other supporting unit is correspondingly connected with the second end cover and communicated with the inner cavity of the pipe fitting.

When the pipe fitting grinding tool is used specifically, a pipe fitting is installed on the pipe fitting tool through a pipe fitting installation hole, the left side of the pipe fitting is clamped in the pipe fitting installation hole of a first end cover, the right side of the pipe fitting is clamped in the pipe fitting installation hole of a second end cover, grinding materials enter through a through cavity in a supporting unit positioned on one side of the pipe fitting and then enter each pipe fitting installation hole in the first end cover (or the second end cover) and further enter the pipe fitting, the pipe fitting is ground, the grinding materials enter the pipe fitting installation hole of the second end cover (or the first end cover) after grinding the inner surface of the pipe fitting, and then the grinding materials are output through a through cavity in a supporting unit positioned on the other side of the pipe fitting, so that the grinding of the inner surface of the pipe fitting is completed, at least two groups of pipe fitting installation holes are formed in the pipe fitting tool, a plurality of pipe fittings can be clamped on the corresponding pipe fitting installation holes simultaneously, and finishing the grinding of a plurality of pipe fittings simultaneously.

Optionally, a slide rail is arranged on the tool support and matched with the supporting unit.

Optionally, the tool support further comprises an auxiliary support, one end of the auxiliary support is connected with the supporting unit, and the other end of the auxiliary support is connected with the tool support.

Further, the supporting unit comprises a base, a tool chuck is sleeved in the base, and a through cavity is formed in the tool chuck.

Further, the tool chuck comprises a tool connecting end and a pipeline connecting end, wherein the tool connecting end is provided with a first groove, and the first groove corresponds to the pipe fitting tool.

Further, the tool chuck is located at the tool connecting end and is further provided with a pressure gauge for measuring the pressure of fluid in the through cavity.

Further, the base is further provided with a locking screw, the tool clamping head is further provided with a sliding groove, and the locking screw is matched with the sliding groove.

Furthermore, the supporting unit is also provided with an adjusting mechanism, the adjusting mechanism comprises an adjusting nut and an adjusting nut seat, the adjusting nut is in threaded connection with the tool chuck, and the front end of the adjusting nut is provided with a bulge; the adjusting nut seat is fixedly connected with the base, a second groove is formed in the adjusting nut seat, and the protrusion is matched with the second groove.

Furthermore, the device also comprises one or more than one adjusting handle, and the adjusting handle is connected with the rear end of the adjusting nut.

Furthermore, a nut sleeve is arranged between the adjusting handle and the adjusting nut.

Further, the tool chuck is located at the tool connecting end and is further provided with a positioning block for limiting the pipe fitting tool.

Optionally, the pipe fitting tool comprises a supporting main body, one side of the supporting main body is connected with a first end cover, and the other side of the supporting main body is connected with a second end cover.

Further, a tool bracket is further sleeved on the supporting main body.

The beneficial effect that this application reached is: (1) at least two groups of pipe fitting mounting holes are formed in the pipe fitting tool, so that a plurality of pipe fittings in pipes can be polished at the same time, and the polishing efficiency is improved; (2) the pipe fitting tool is arranged in the two supporting units, so that the whole structure is compact, and the occupied area is small; (3) the abrasive conveying pressure can be adjusted in a targeted manner, and the polishing quality is ensured; (4) the polishing device can rapidly disassemble a plurality of pipe fittings, and further improves polishing efficiency; (5) the application can be suitable for thin-wall pipe fittings and has wide application range.

Drawings

FIG. 1 is a schematic view of a first viewing angle of a pipe fitting clamping table according to the present invention;

FIG. 2 is a second perspective view of the pipe fitting clamping table of the present invention;

FIG. 3 is a schematic view of a first perspective of a tooling chuck of the present invention;

FIG. 4 is a schematic view of a first perspective of an adjustment nut seat of the present invention;

FIG. 5 is a schematic view of a first perspective of the adjustment mechanism of the present invention;

FIG. 6 is a schematic view of a second perspective of the adjustment mechanism of the present invention;

FIG. 7 is a schematic view of a first perspective of the present invention;

fig. 8 is a schematic view of a second perspective of the pipe fitting tooling of the present invention.

In the figure: 110 tool support, 111 first protrusion, 112 dovetail structure, 120 support unit, 121 base, 122 auxiliary support, 123 locking screw, 130 pipe fitting tool, 131 support main body, 132 first end cover, 133 second end cover, 134 pipe fitting mounting hole, 140 tool chuck, 141 tool connecting end, 1411 first groove, 142 pipeline connecting end, 143 through cavity, 144 sliding groove, 145 positioning block, 146 first step, 147 second step, 148 third step, 150 pressure gauge, 160 adjusting mechanism, 161 adjusting nut, 1611 second protrusion, 162 adjusting nut seat, 163 adjusting handle, 164 nut sleeve, 170 tool bracket, 171, second fastening screw and 180 pipe fitting.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

A pipe fitting clamping workbench comprises a tool support 110, wherein two supporting units 120 are arranged on the tool support 110, and a through cavity 143 for abrasive to flow through is arranged in each supporting unit 120; a pipe fitting tool 130 is further arranged between the two support units 120, a first end cover 132 and a second end cover 133 are arranged on the pipe fitting tool 130, and at least two groups of pipe fitting mounting holes 134 are correspondingly arranged on the first end cover 132 and the second end cover 133; wherein the through cavity 143 of the support unit 120 on the left side corresponds to the first end cap 132, and the through cavity 143 of the support unit 120 on the right side corresponds to the second end cap 133.

As shown in fig. 1, in the specific implementation process of the present application, the tool support 110 serves as a base for the pipe fitting 180 to clamp the workbench, and is used for supporting other components; the tool support 110 is provided with two support units 120, wherein the support units 120 can be fixedly arranged on the tool support 110 through screws or other manners, so as to facilitate the installation of other components; the two support units 120 may also be movably disposed on the tool support 110, for example, slidably disposed with the tool support 110, or one support unit 120 is fixed to the tool support 110, and the other support unit 120 is slidably disposed with the tool support, so that the distance between the two support units 120 is conveniently adjusted, and the pipe fitting is conveniently installed.

In the present application, a through cavity 143 for abrasive to flow through is provided in the supporting unit 120, and the abrasive flows along the through cavity 143 under the driving of external power, and can realize unidirectional or bidirectional flow as required; a pipe fitting tool 130 is further arranged between the two support units 120, a first end cover 132 and a second end cover 133 are arranged on the pipe fitting tool 130, and at least two groups of pipe fitting mounting holes 134 are correspondingly arranged on the first end cover 132 and the second end cover 133; the pipe tool can be connected with the support units 120 on two sides through existing connection methods such as bolt connection, or the two support units 120 and the pipe tool 130 can keep relative positions through other existing methods, the support unit 120 on the left side is provided with a through cavity 143 corresponding to the first end cap 132, and the support unit 120 on the right side is provided with a through cavity 143 corresponding to the second end cap 133.

The pipe 180 is mounted on the pipe tool 130 through the pipe mounting hole 134, the left side of the pipe 180 is clamped in the pipe mounting hole 134 of the first end cover 132, and the right side of the pipe 180 is clamped in the pipe mounting hole 134 of the second end cover 133. In the concrete implementation, the abrasive material enters through the through cavity 143 in the supporting unit 120 on one side, then enters into each pipe fitting mounting hole 134 in the first end cover 133 (or the second end cover 132), and then enters into the pipe fitting 180, the grinding is performed on the pipe fitting 180, the abrasive material enters into the pipe fitting mounting hole 134 of the second end cover 132 (or the first end cover 133) after grinding the inner surface of the pipe fitting 180, then is output through the through cavity 143 in the supporting unit 120 on the other side, so that the inner surface of the pipe fitting 180 is ground, at least two groups of pipe fitting mounting holes 134 are arranged on the pipe fitting tool 130, wherein the plurality of pipe fittings 180 can be clamped on each group of corresponding pipe fitting mounting holes 134 simultaneously, the abrasive material enters into the plurality of groups of pipe fitting mounting holes 134 simultaneously, and grinding of the plurality of pipe fittings 180 is completed simultaneously. In this embodiment, 6 pipe members 180 can be installed, greatly improving the polishing efficiency.

In another embodiment of the present application, a slide rail is disposed on the tool support 110, and the slide rail is matched with the support unit 120; as shown in fig. 1, two first protrusions 111 in a parallel structure are integrally disposed on the tool support 110, the surface of the first protrusion 111 is a plane, and the bottom of the support unit 120 is also processed into a plane, which can slide along the first protrusion 111, so as to adjust the distance between the two support units 120, and adapt to pipes 180 with different lengths.

In another embodiment of the present application, the supporting unit 120 includes a base 121, a tool chuck 140 is sleeved in the base 121, and a through cavity 143 is disposed in the tool chuck 140. As shown in fig. 1, the base 121 is in a convex structure, a cavity for accommodating the tool chuck 140 is disposed in the base 121, the tool chuck 140 is sleeved in the base 121, and a through cavity 143 for passing an abrasive is disposed in the tool chuck 140. The apertures of the pipe elements 180 are different, so that the apertures of the selected through cavities 143 are different; in practical applications, a batch of tool chucks 140 having the same physical dimensions but different apertures of the through cavity 143 may be prepared. When a certain size of pipe 180 is selected for polishing, the corresponding tool chuck 140 is selected without replacing the base 121 or the tool support 110, so that the time for replacing the tool for replacing the pipe 180 is saved, and the efficiency is improved.

Further, in another embodiment of the present application, the supporting unit 120 further includes an auxiliary support 122, and one end of the auxiliary support 122 is connected to the base 121, and the other end is connected to the tool support 110. As shown in fig. 1, a dovetail structure 112 is arranged on the tool support 110, and one end of the auxiliary support 122 is provided with a triangular protrusion matched with the dovetail structure 112, and is clamped in the dovetail structure 112 and can slide along the dovetail structure 112; the other end of the auxiliary support 122 and the base 121 form a mutually coupled step surface; thus, the auxiliary support 122 slides along the dovetail structure 112 while the base 121 slides along the first protrusion 111, thereby improving the reliability of the overall structure. In another embodiment of the present application, the auxiliary support 122 may be optionally installed on both the front and rear sides of the base 121, so as to further improve the reliability of the base 121 sliding along the tool support 110.

Further, in another embodiment of the present application, the tool chuck 140 includes a tool connection end 141 and a pipe connection end 142, wherein the tool connection end 141 is provided with a first groove 1411, and the first groove 1411 corresponds to the pipe tool 130. Referring to fig. 1 and 3, the tool chuck 140 has a stepped shaft structure, and includes a first step 146, a second step 147, and a third step 148, where the third step 148 at the right end is a tool connecting end 141 for connecting the pipe tool 130; the left first step 146 is a pipe connecting end 142 for connecting an abrasive conveying pipe to the outside. The center of the step axis is a through cavity 143 for passage of the abrasive. As shown in fig. 3, a first groove 1411 is disposed at the tool connection end 141, wherein the first groove 1411 is communicated with the through cavity 143, and the first groove 1411 corresponds to the pipe tool 130; that is, after the pipe fitting tool 130 and the tool chuck 140 are assembled and mounted in this application, the first end cap 132 or the second end cap 133 of the pipe fitting tool 130 is clamped in the first groove 1411, and after the abrasive flows into the first groove 1411 from the through cavity 143, the abrasive simultaneously flows into the plurality of pipe fitting mounting holes 134 of the first end cap 132 or the second end cap 133 from the first groove 1411, and then the abrasive enters the pipe fitting 180 for grinding; through setting up first recess 1411, let the abrasive material form certain buffering effect in first recess 1411, increased its homogeneity that flows to each pipe fitting mounting hole 134, ensured the uniformity of a plurality of pipe fittings 180 grinding effects, guaranteed processingquality.

Further, as shown in fig. 1 and fig. 2, in another embodiment of the present application, a pressure gauge 150 is further disposed at the tool connection end of the tool chuck 140, so as to be able to grasp the pressure of the abrasive entering or flowing out of the pipe tool 130 in real time; specifically, the pressure gauge 150 may be a common pressure gauge 150 in the prior art, wherein a mounting hole is formed in the tool chuck 140, the mounting hole is communicated with the through hole, and after the pressure gauge 150 is mounted on the tool chuck 140, a testing end of the pressure gauge extends into the through cavity 143, so that the abrasive material can be detected in real time. The pressure fed back by the pressure gauge 150 is combined with the surface roughness after polishing, so that a corresponding pressure value can be selected according to the requirement of the surface roughness polished by the pipe fitting 180. In this embodiment, the pressure gauges 150 are disposed on the tool chucks 140 on the left and right sides of the pipe tool 130, so that the pressure of the abrasive entering the pipe tool 130 can be measured, the pressure loss of the abrasive in the pipe tool 130 can be calculated, the pressure at the output end of the abrasive can be adjusted in time, the polishing efficiency can be improved, and the polishing quality can be ensured.

Further, as shown in fig. 1 and fig. 2, in another embodiment of the present application, a locking screw 123 is further disposed on the base 121, and a sliding groove 144 is further disposed on the tool chuck 140, wherein the locking screw 123 is matched with the sliding groove 144. The locking screw 123 is matched with the sliding groove 144, so that the tool chuck 140 can be effectively prevented from sliding out of the base 121; in this embodiment, a through hole for the locking screw 123 to pass through is formed in the base 121, a sliding groove 144 is integrally formed in the surface of the second step 147 of the tool chuck 140, and the front end of the locking screw 123 is clamped in the sliding groove 144, so that the moving position of the tool chuck 140 is limited, the adjusting time of the tool chuck 140 is reduced, and the polishing efficiency can be improved. For ease of manufacture, the sliding groove 144 may be selected from a keyway configuration of the prior art.

Further, as shown in fig. 3 to 6, in another embodiment of the present application, the supporting unit 120 is further provided with an adjusting mechanism 160, wherein the adjusting mechanism 160 includes an adjusting nut 161 and an adjusting nut seat 162, wherein the adjusting nut 161 is screwed with the tool chuck 140, and as shown in fig. 5 and 6, a second protrusion 1611 is provided at a left end of the adjusting nut 161; the adjusting nut seat 162 is fixedly connected to the base 121, and the adjusting nut seat 162 is provided with a second groove, wherein the second protrusion 1611 is matched with the second groove. In particular use, the adjustment mechanism 160 is located at the tool chuck 140 conduit attachment end 142; as shown in fig. 4, the adjusting nut seat 162 is a plate-shaped structure with a circular segment, and is fastened to the base 121 by bolts; the adjusting nut 161 has a step, and after the adjusting nut is attached to the end surface of the base 121, a second groove is formed at the step, or a second groove may be formed in an inner ring of the adjusting nut 161. The outer thread is arranged on the surface of the tool chuck 140, the adjusting nut 161 is provided with an inner thread matched with the outer thread, the left end of the adjusting nut 161 is further provided with a second protrusion 1611, the second protrusion 1611 is clamped in the second groove after installation, so that the adjusting nut 161 is limited from moving left and right along the tool chuck 140 when in use, the adjusting nut 161 is rotated at the moment, the circumferential rotation of the adjusting nut 161 is converted into the front and back movement of the tool chuck 140 through the threaded connection of the adjusting nut 161 and the tool chuck 140, and the structure is good in stability, convenient to adjust and capable of improving polishing efficiency; meanwhile, compared with a hydraulic adjusting mechanism adopted in the prior art, the adjusting mechanism has the advantages that the stress of the pipe fitting 180 is small, and the quality of a thin-wall workpiece can be guaranteed.

Furthermore, in another embodiment of the present application, as shown in fig. 5 and fig. 6, more than one adjusting handle 163 is further included, the adjusting handle 163 is connected to the rear end of the adjusting nut 161, the adjusting handle 163 is connected to facilitate the operator to rotate the adjusting nut 161, and in order to further improve the uniformity of the force applied to the adjusting nut 161 during rotation and the convenience of operation, 3 adjusting handles 163 are uniformly arranged in the circumferential direction of the adjusting nut 161; to improve the convenience of operation of the present structure, the adjustment handle 163 and the adjustment nut 161 may be selectively screwed.

Further, as shown in fig. 5 and 6, in another embodiment of the present application, a nut sleeve 164 is further disposed between the adjustment handle 163 and the adjustment nut 161, wherein the nut sleeve 164 is of a sleeve-type structure and is sleeved on a rear end of the adjustment nut 161, and a sleeve hole is circumferentially disposed on the nut sleeve 164, wherein the sleeve hole is matched with the adjustment handle 163, and by disposing the nut sleeve 164, stability of the overall structure is improved during rotation of the adjustment handle 163.

Further, in another embodiment of the present application, a positioning block 145 is further disposed on the tool chuck 140 at the tool connecting end, as shown in fig. 1 and fig. 2, the positioning block 145 is a plate-shaped structure and is fixed at the end of the tool chuck 140 by a screw, an arc-shaped groove is disposed on the positioning block 145, wherein the arc-shaped groove is matched with the first end cover 132 or the second end cover 133 of the pipe fitting tool 130, and a center position of the arc-shaped groove is matched with a center position of the first groove 1411. When specifically using, the pipe fitting frock 130 is placed on locating piece 145 earlier, provides the support and carries out fore-and-aft direction and the spacing of upper and lower direction to pipe fitting frock 130 through locating piece 145, then adjusts two support unit 120's relative position to it is spacing to carry out left and right directions to pipe fitting frock 130, has improved pipe fitting frock 130 at the installation effectiveness and the dismantlement efficiency of this application structure.

Optionally, in another embodiment of the present application, the pipe fitting tool 130 includes a supporting body 131, a first end cap 132 is connected to the left side of the supporting body 131, and a second end cap 133 is connected to the right side of the supporting body 131; as shown in fig. 1 and 7, in order to facilitate installation of the pipe 180, the pipe tool 130 of the present application may also be of a revolving structure, which includes a supporting body 131 located at the center, the supporting body 131 is of a cylindrical structure, the left side of the supporting body 131 is connected with a first end cap 132 by welding or other existing connection methods, similarly, the right side of the supporting body 131 is also installed with a second end cap 133, wherein a plurality of pipe installation holes 134 are uniformly arranged in the first end cap 132 and/or the second end cap 133 along the circumferential direction, wherein the pipe installation holes 134 may be formed separately, or may be integrally formed in the first end cap 132 or the second end cap 133, so as to improve the installation efficiency of the pipe 180 and the stability of the installed pipe 180.

Further, in another embodiment of the present application, a tooling bracket 170 is further sleeved on the supporting main body 131, as shown in fig. 7 and 8, the tooling bracket 170 may adopt a round sleeve type structure, and a third through hole matched with the supporting main body 131 is arranged on the inner side of the tooling bracket 170; more than 1 fourth through holes for the pipe fitting 180 to pass through are formed in the middle of the support body 131; when the tool bracket 170 is sleeved on the support main body 131, the pipe fitting 180 penetrates through the fourth through hole, and two ends of the pipe fitting are respectively clamped in the pipe fitting mounting holes 134 of the first end cover 132 or the second end cover 133. By arranging the tool bracket 170, the distance between two supporting points of the pipe fitting 180 in the clamping workbench is shortened, the deflection deformation of the pipe fitting 180, particularly the thin-wall inner pipe fitting 180, is reduced, and the stability of the whole structure is improved; in other embodiments of the present application, the supporting body 131 may be sleeved with a plurality of tool brackets 170, so as to further solve the problem of deflection deformation of the thin-walled inner tube 180 during the clamping process.

Further, in another embodiment of the present application, a second fastening screw 171 is further disposed on the tool bracket 170, and as shown in fig. 7, the tool bracket 170 may be fixed on the support body 131 by disposing the second fastening screw 171. So can prevent that frock bracket 170 from removing about appearing in abrasive polishing process, further promote the reliability of pipe fitting frock. In other embodiments of the present application, in order to improve the stability after the relative position between the tool bracket 170 and the supporting body 131 is fixed, a threaded hole matched with the second fastening screw 171 may be further disposed on the supporting body 131, and the second fastening screw 171 passes through the sidewall of the tool bracket 170 to be connected with the threaded hole in a matching manner, so that the tool bracket 170 is prevented from moving and rotating along the supporting body 131 during the abrasive polishing process, and the grinding quality of the pipe fitting is ensured.

It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that any changes and modifications to the present invention may occur to those skilled in the art after reading the present teachings, and such equivalents are also intended to be limited by the appended claims.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.