CN204818777U - Lathe work welding stent's anchor clamps - Google Patents

Abstract

The utility model relates to a fixture for turning and processing a welding bracket, which comprises a body for clamping by a lathe chuck and a connecting part located at the rear end of the body, and the outer surface of the connecting part is provided with an inner hole with the front end of the welding bracket The positioning locking thread in the clamp is used to fasten the connection locking thread connecting the clamp and the welding bracket, and the clamp is also provided with the body and the connecting part for boring the welding bracket The through hole for discharging waste chips during the inner hole of the guide rod at the rear end. Therefore, the welding bracket can be quickly clamped on the machine tool through the fixture, and the through hole on the fixture can discharge the waste chips in the boring process in time to ensure the surface accuracy of the inner hole.

Description

A fixture for turning and processing welding brackets

technical field

The utility model relates to a fixture for machining inner holes, in particular to a fixture for boring and machining inner holes.

Background technique

Welding brackets in high-voltage switchgear require high processing accuracy. The traditional processing method is to use advanced composite machining centers for processing. However, for welding brackets with complex structures, especially special-shaped welding brackets, multiple clamping is required in the machining center, and the accuracy is difficult. Guarantee, especially when processing precision outer circles, it is difficult to guarantee the processing requirements, and the processing efficiency is low.

The use of lathe processing can ensure the machining accuracy of the precise outer circle and improve the processing efficiency, but there is also the problem of inconvenient clamping of the welding bracket on the lathe when boring deep holes, especially the special-shaped welding bracket that requires high precision on the outer surface of the outer circle. It is more difficult when clamping on top. Specifically, when the inner hole is bored and locked through the outer surface of the part to be processed, the outer surface of the part to be processed will be damaged; the mounting plate of the fixture is fixed on the spindle chuck of the lathe through the mounting hole, and the fixture and the lathe It is inconvenient to install and disassemble; the fixture cannot increase the large clamping force when boring deep holes, and the connection strength between the fixture and the workpiece is insufficient.

In addition, because the surface precision of the inner hole of the guide rod of the welding bracket is high, the waste chips cannot be discharged in time during the boring process, which will cause damage to the machined surface. Low.

Utility model content

The purpose of this utility model is to provide a clamp for turning and processing welding brackets, which is used to solve the problems of difficult clamping and poor chip removal when machining inner holes of welding brackets.

The fixture of the turning processing welding bracket of the utility model comprises a body for being clamped by a lathe chuck and a connecting part located at the rear end of the body, the outer surface of the connecting part is provided with a hole in the inner hole of the front end of the welding bracket. The positioning locking thread cooperates to fasten the connecting locking thread connecting the clamp and the welding bracket, and the clamp is also provided with a thread that passes through the body and the connecting part for boring the welding bracket. The through hole for discharging waste when the inner hole of the guide rod at the end.

The utility model is provided with the connection locking thread that cooperates with the inner hole of the front end of the welding bracket on the outer surface of the connecting part of the clamp, so that the clamp and the inner hole of the front end of the welding bracket are matched to realize the fixed connection between the clamp and the welding bracket, avoiding The clamping of the front end of the welded bracket results in damage to the outer surface of the welded bracket that has been clamped at the front end; the use of connecting locking threads can simultaneously realize the axial and axial positioning of the welded bracket, and the structure is simple and can provide a large The clamping force can quickly realize the connection and separation of the fixture and the welding bracket, which improves the production efficiency; after the fixture is tightly connected with the welding bracket, the body of the fixture can be clamped in the chuck of the lathe, so that welding can be realized conveniently Clamping of the bracket on the lathe; a through hole through the fixture body and the connection part is set on the jig. After the jig is fastened to the welding bracket, the through hole communicates with the inner hole to be processed of the guide rod at the rear end of the welding bracket. During the boring process of the inner hole, the generated waste chips can enter the center hole of the lathe chuck in time through the through hole to discharge the waste chips, thereby preventing the waste chips from damaging the machined inner hole surface.

Further, the body and the connecting part in the above-mentioned clamp are cylinders arranged coaxially before and after, the diameter of the body is larger than the diameter of the connecting part, and the rear end surface of the body is in contact with the outer surface of the connecting part. A vertical step surface is formed, and the rear end surface of the body is an annular plane for abutting against the front end surface of the welding bracket. Therefore, the axial cooperation between the clamp and the welding bracket and the cooperation between the rear end surface of the clamp body and the front end surface of the welding bracket form a reliable positioning and limiting structure, thereby ensuring the connection strength between the clamp and the welding bracket.

Further, the diameter of the body in the above-mentioned fixture is larger than the diameter of the outer circle of the front end of the welding bracket, and the diameter of the through hole is larger than or equal to the diameter of the inner hole to be processed of the guide rod at the rear end of the welding bracket. Therefore, when processing the inner hole of the guide rod at the rear end of the welding bracket, the generated waste chips can enter the through hole of the fixture in time and be discharged through the center hole of the lathe chuck.

Description of drawings

Fig. 1 is the structural representation of the welding bracket clamped by the clamp of the present utility model;

Fig. 2 is the three-dimensional structure schematic diagram of the welding bracket clamped by the clamp of the present utility model;

Fig. 3 is a sectional view of the clamp of the present utility model;

Fig. 4 is the schematic structural view of the fixture after the utility model is connected with the welding bracket;

Fig. 5 is a cross-sectional view of the assembly structure of the welding bracket, fixture and machine tool chuck of the present invention;

Fig. 6 is a schematic diagram of the assembly structure of the welding bracket, the fixture and the chuck of the machine tool of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 1 and 2, the front end of the welding bracket 1 has an outer circle 11 to be processed, the front end of the welding bracket 1 also has an inner hole 12, and the rear end of the welding bracket 1 has a guide rod 13, and the guide rod 13 has a shape to be processed. The inner hole 14, the inner hole 12 is connected with the inner hole 14, and the diameter of the inner hole 12 is larger than the diameter of the inner hole 14.

As shown in Fig. 3 and Fig. 4, the fixture 2 of the turning processing welding bracket of the present utility model includes a body 21 and a connecting part 22, the body 21 and the connecting part 22 are cylinders arranged coaxially before and after, and the body 21 is on the side of the fixture 2 The front end, the connection part 22 is at the rear end of the clamp 2, the diameter of the body 21 is larger than the diameter of the connection part 22, and the outer surface of the connection part 22 is provided with a connection locking structure that matches the inner hole 12 of the front end of the welding bracket 1, and the clamp 2 A through hole 23 that passes through the main body 21 and the connecting portion 22 and is coaxial with the main body 21 is also provided.

The clamp of the present utility model, by setting the connection and locking structure on the outer surface of the connecting part 22 of the clamp 2 to cooperate with the inner hole 12 of the front end of the welding bracket 1, makes the clamp 2 cooperate with the inner hole 12 of the front end of the welding bracket 1. The fixed connection between the clamp 2 and the welding bracket 1 is ensured, and the outer circular surface clamping of the front end of the welding bracket is avoided to cause damage to the outer surface of the clamped front end of the welding bracket; after the clamp 2 is firmly connected with the welding bracket 1, the clamp can be The body 21 of 2 is clamped in the chuck 51 of the lathe 5, thereby realizing the clamping and positioning of the welding bracket on the lathe conveniently; the through hole 23 penetrating the clamp body 21 and the connecting part 22 is set on the clamp 2, and the clamp 2 After being fastened to the welding bracket 1, the through hole 23 communicates with the inner hole to be processed of the guide rod 13 at the rear end of the welding bracket 1. When the inner hole to be processed is bored, the waste chips generated can pass through the through hole 23 in time. Enters the center hole of the lathe chuck to expel waste chips, thereby avoiding damage to the machined inner hole surface caused by waste chips.

As shown in Figures 3-6, in the fixture of the present invention, the connection locking structure of the outer surface of the connecting part 22 of the fixture 2 is a connecting locking thread formed on the outer surface of the connecting part 22, and correspondingly, the welding bracket Positioning and locking threads are formed on the surface of the inner hole 12 at the front end of 1. By setting the connecting locking thread on the outer surface of the connecting part 22 of the clamp 2 and cooperating with the positioning locking thread in the inner hole 12 of the front end of the welding bracket 1, the fastening connection between the clamp 2 and the welding bracket 1 can be easily realized, simplifying With the connection and locking structure, the connection and separation of the fixture and the welding bracket can be quickly realized, and the production efficiency is improved.

The rear end surface 212 of the main body 21 in the clamp 2 forms a vertical stepped surface with the outer surface of the connecting portion 22 , and the rear end surface 212 of the main body 21 is an annular plane for abutting against the front end surface of the welding bracket 1 . Therefore, the axial cooperation between the clamp and the welding bracket and the cooperation between the rear end surface of the clamp body and the front end surface of the welding bracket form a reliable positioning and limiting structure, thereby ensuring the connection strength between the clamp and the welding bracket. The outer surface of the body 21 of the fixture 2 is a cylindrical surface 211, and the outer surface 211 is used to cooperate with the chuck of the machine tool to facilitate clamping by the jaws of the chuck.

Specifically, the diameter of the body 21 in the fixture 2 is larger than the diameter of the outer circle 11 of the front end of the welding bracket 1, so as to increase the contact area between the rear end surface 212 of the body 21 and the end surface of the front end of the welding bracket 1, thereby further ensuring the connection structure. reliability. The diameter of the through hole 23 is greater than or equal to the diameter of the inner hole 14 to be processed of the guide rod 13 at the rear end of the welded bracket 1, so that the waste chips generated can enter in time when the inner hole of the guide rod at the rear end of the welded bracket is processed. into the through hole of the fixture and out through the center hole of the lathe chuck.

Another object of the present utility model is to provide a method for turning and processing a welding bracket. The above-mentioned clamp is used in the processing method. In a specific embodiment of the processing method of the present utility model, the method includes the following steps:

1) Processing positioning and locking threads for matching with the fixture 2 on the surface of the inner hole 12 at the front end of the welding bracket 1;

2) Screw the connecting locking thread on the outer surface of the connecting part 22 of the fixture 2 into the positioning locking thread of the welding bracket 1 so that the fixture 2 and the welding bracket 1 are tightly connected;

3) Fix the body 21 of the fixture 2 on the lathe chuck, bore the inner hole 14 of the guide rod 13 at the rear end of the welding bracket 1, and discharge the waste from the center hole of the lathe chuck through the through hole 23 of the fixture 2 .

In the processing method of the welding bracket of the present utility model, the positioning locking thread matched with the clamp is processed on the inner hole of the front end of the welding bracket first, and then the connecting locking thread on the outer surface of the connecting part of the clamp is connected with the locking thread on the welding bracket. The positioning and locking threads cooperate to conveniently realize the connection and fixation of the fixture and the welding bracket, simplify the connection and locking structure, and quickly realize the connection and separation of the fixture and the welding bracket, which improves production efficiency; the body of the fixture is clamped on the The clamping of the welding bracket on the lathe can be conveniently realized on the lathe chuck; since the clamp also has a through hole through the clamp body and the connection part, the waste generated during the processing can be easily discharged, thereby ensuring the surface of the inner hole machining accuracy.

Specifically, in the above embodiment, when the fixture 2 is fastened to the welding bracket 1, the connection locking thread of the connecting portion 22 of the fixture 2 is screwed into the positioning locking thread of the inner hole 12 of the front end of the welding bracket 1, and The rear end surface 212 of the clamp body 21 is pressed against the front end surface of the welding bracket 1 to form a fastening connection. Therefore, the axial cooperation between the clamp and the welding bracket and the cooperation between the rear end surface of the clamp body and the end surface of the front end of the welding bracket form a reliable positioning and limiting structure, thereby ensuring the connection strength between the clamp and the welding bracket.

Specifically, in the above-mentioned embodiment, when boring the inner hole 14 of the guide rod 13 at the rear end of the welding bracket 1, the rotating speed of the lathe is greater than 200 rpm to improve the surface roughness of the inner hole. For example, the rotating speed of the lathe is 220 rpm, 250 rpm. Because waste chips can be discharged in time, the lathe speed can be increased when boring the inner hole 14, so that the size and roughness processing requirements of the inner hole can be met in one boring process, and the processing efficiency is also improved while ensuring the processing requirements .

The specific embodiments of the clamps involved in the present invention are given above, but the present invention is not limited to the described embodiments. Under the idea given by the utility model, the technical means in the above-mentioned embodiments are transformed, replaced, and modified in ways that are easy for those skilled in the art, and the functions played are the same as those of the corresponding technical means in the utility model. They are basically the same, and the purpose of the utility model is also basically the same. The technical solution formed in this way is formed by fine-tuning the above-mentioned embodiments, and this technical solution still falls within the protection scope of the utility model.

Claims (3)

1. the fixture of a turnery processing welding support, comprise for supplying the body (21) of lathe chuck clamping and being positioned at the connecting portion (22) of described body (21) rear end, it is characterized in that, the outer surface of described connecting portion (22) is provided with the positioning and locking threaded engagement in the endoporus (12) of welding support (1) front end to be fastenedly connected the connection locking screw of described fixture and described welding support (1), the through hole (23) of scrap is discharged when described fixture is also provided with endoporus (14) of the guide post (13) in order to the rear end at welding support described in boring (1) of through described body (21) and described connecting portion (22).

2. fixture according to claim 1, it is characterized in that, described body (21) and described connecting portion (22) are the cylinder that coaxial front and back are arranged, the diameter of described body (21) is greater than the diameter of described connecting portion (22), the rear end face (212) of described body (21) forms vertical step surface with described connecting portion (22) outer surface, and the rear end face (212) of described body is the planar annular for abutting with the front end face of welding support.

3. fixture according to claim 1, it is characterized in that, the diameter of described body (21) is greater than the diameter of the cylindrical (11) of described welding support (1) front end, and the diameter of described through hole (23) is more than or equal to the diameter of the endoporus to be processed (14) of the guide post (13) of described welding support (1) rear end.