CN102501101A - Clamp body for machining side plate of pulley frame, and method for machining and positioning side plate of pulley frame - Google Patents

Abstract

The invention discloses a clamping body for processing the side plate of a pulley frame. The upper surface of the clamping body is a working surface, and symmetrical steps and a plurality of holes for positioning and installation are arranged along both sides of the longitudinal axis of the upper surface of the clamping body. A short through groove is arranged between the two steps, the bottom surface of the short through groove is a section of positioning surface, and a stepped hole is opened on the positioning surface, the upper section of the stepped hole is a smooth hole, and the lower section of the stepped hole is a threaded hole. The invention also discloses a method for processing and positioning the side plate of the pulley frame by using the aforementioned clamp body. During rough machining, the four round tables under the side plate are used as positioning support surfaces, and multi-point positioning is adopted, and the pressing plate is pressed; "One-point positioning" is used to prevent deformation, which reduces deformation and errors; the left and right parts are completed on the same tooling, with high processing accuracy and good matching accuracy.

Description

Clamp body and processing positioning method for processing pulley frame side plate

technical field

The invention belongs to the technical field of mechanical equipment manufacturing, and relates to a clamping body for processing the side plate of a pulley frame, and also relates to a method for processing and positioning the side plate of a pulley frame by using the clamping body.

Background technique

The pulley frame is an important part of the aircraft airdrop device. The side plate of the pulley frame consists of a left side plate and a right side plate. The left and right side plates are symmetrical in structure. When used in pairs, they are large-sized thin-walled special-shaped parts. The thickness is uneven, the shape is complex, and the dimensional accuracy is high.

In the prior art, when conventional multi-point positioning and clamping methods are used for processing, the problem of stress concentration cannot be overcome, which will lead to deformation of the side plate of the pulley frame, and it is difficult to ensure the technical requirements of the side plate of the pulley frame. Due to the poor processing accuracy of the left and right parts, the matching accuracy is not good.

Contents of the invention

The purpose of the present invention is to provide a clamping body for processing the side plate of the pulley frame, which solves the problems of the prior art that there is no special equipment for processing the side plate of the pulley frame, and the problems of stress concentration and large deformation after processing on a common bench are solved.

Another object of the present invention is to provide a method for processing and positioning the side plate of the pulley frame by using the aforementioned clamp body.

The technical solution adopted in the present invention is: a clamping body for processing the side plate of the pulley frame, the upper surface of the clamping body is a working surface, and symmetrical steps and many positioning installations are arranged along both sides of the longitudinal axis of the upper surface of the clamping body. A short through groove is arranged between the two steps, the bottom surface of the short through groove is a positioning surface, and a step hole is opened on the positioning surface, the upper part of the step hole is a smooth hole, and the lower part of the step hole is a threaded hole.

Another technical solution adopted by the present invention is: a method for processing and positioning the side plate of the pulley frame using the above-mentioned device, using a device whose structure is that the upper surface of the clamp body is the working surface, and the upper surface of the clamp body along the There are symmetrical steps and many holes for positioning and installation on both sides of the longitudinal axis of the surface. There is a short through groove between the two steps. The bottom surface of the short through groove is a positioning surface. There is a step hole on the positioning surface. The step hole The upper part of the step hole is a light hole, and the lower part of the step hole is a threaded hole; the upper surface of the clamp body is provided with a plurality of pressure plates, auxiliary fixture A and auxiliary fixture B,

First fix the clamp body on the workbench of the machine tool, and then place the smooth surface of the side plate of the pulley frame to be processed on the positioning surface of the short through groove of the clamp body, and implement according to the following steps:

The first step is to use multi-point positioning for rough machining, that is, use multiple support nails to support and position the four support surfaces of the smooth surface of the side plate of the pulley frame, press the pressure plate on the step with screws, and use auxiliary fixture A and auxiliary fixture B. Position the two ends of the side plate of the pulley frame, and press the side plate of the pulley frame against the positioning surface at the same time by the pressing ends of each pressing plate and auxiliary fixture, and carry out rough machining according to the processing technology;

The second step is to use one-point positioning for finishing, using four supporting nails to provide auxiliary support on the four corners of the side plate of the pulley frame, and insert a positioning sleeve into the assembly hole of the side plate of the pulley frame, and press the circular pressure plate At the upper port of the positioning sleeve, insert the bolts into the step holes of the positioning sleeve and the positioning surface, press the side plate of the pulley frame against the positioning surface, and perform finishing according to the processing technology.

The beneficial effects of the present invention are: the processing clamp has a simple structure, is easy to manufacture, and is convenient to use. In the process of processing the left and right side plates of the pulley frame, the method reduces the processing of the side plates of the pulley frame through "multi-point positioning" and "one-point positioning". The deformation and error in the process; the left and right parts are completed on the same tooling, with high processing accuracy and good matching accuracy.

Description of drawings

Fig. 1 is the working face structure schematic diagram of pulley frame side plate clamping body of the present invention;

Fig. 2 is the back structure schematic diagram of pulley frame side plate clip body of the present invention;

Fig. 3 is the schematic diagram of the installation of the pulley frame side plate on the clamp body in the method of the present invention;

Fig. 4 is the top view of pulley frame side plate and clip body assembly in the inventive method;

Fig. 5 is a schematic cross-sectional view along the A-A direction in Fig. 4 .

In the figure, 1. Press plate, 2. Bolt, 3. Round press plate, 4. Positioning sleeve, 5. Screw, 6. Pulley frame side plate, 7. Clamp body, 8. Support nail, 9. Auxiliary fixture A, 10 .Auxiliary fixture B, 11. Positioning surface, 12. Step hole, 13. Step, 14. Hole.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1, Fig. 2 are the upper and lower surface structure schematic diagrams of the clamp body 7 for processing the pulley frame side plate of the present invention, the clamp body 7 is made as a casting, the upper surface is the working surface, and symmetrical holes are arranged along the longitudinal axis both sides of the upper surface. The steps 13 and many holes 14 for positioning and installation are provided. A short through groove is arranged between the two steps 13. The bottom surface of the short through groove is a positioning surface 11 with high precision. A step hole 12 is arranged on the positioning surface 11. The upper part of the step hole 12 is a light hole, which is used to install the positioning sleeve, and the lower part of the step hole 12 is a threaded hole, which is used to fix the bolts used for connection; the back structure of the clamp body 7 is: through milling, 6 rectangular Grooves for weight reduction.

Referring to Fig. 3, Fig. 4, Fig. 5, the processing and positioning method of the pulley frame side plate of the present invention uses the aforementioned device to first fix the clamp body 7 on the workbench of the machine tool, and then place the pulley frame side plate 6 to be processed The smooth surface is placed on the positioning surface 11 of the short through groove of the clamp body 7, and implemented according to the following steps:

The first step is to use multi-point positioning for rough machining, that is, use multiple support nails 8 to support and position the four support surfaces of the pulley frame side plate 6 smooth surface, press the pressure plate 1 on the step 13 through the screw 5, and use the auxiliary Fixture A9 and auxiliary fixture B10 position the two ends of the side plate 6 of the pulley frame, each pressing plate 1 and the pressing end of the auxiliary fixture simultaneously press the side plate 6 of the pulley frame against the positioning surface 11, and perform rough machining according to the processing technology;

In the second step, one-point positioning is used for finishing, and four supporting nails 8 are used to provide auxiliary support on the four corners of the side plate 6 of the pulley frame, and the positioning sleeve 4 is inserted in the assembly hole of the side plate 6 of the pulley frame, and the The circular pressure plate 3 is pressed on the upper port of the positioning sleeve 4, and the bolt 2 is inserted into the step hole 12 of the positioning sleeve 4 and the positioning surface 11, and the pulley frame side plate 6 is pressed on the positioning surface 11, and the finishing is carried out according to the processing technology .

The processing of the left and right parts of the side plate of the pulley frame is divided into two times: rough machining and finishing machining, both of which are completed on the tooling. During rough machining, the four round tables under the side plate are used as the positioning support surface, and multi-point positioning is adopted, and the pressure plate is pressed; during finishing machining, "one point positioning" is adopted to prevent deformation, and pins are added on the side to prevent rotation.

When utilizing the device of the present invention to process the pulley frame side plate 6, place the pulley frame side plate 6 on the workbench of the machine tool where the clamp body 7 is fixed, press the pulley frame side plate 6 with the pressing plate 1, and roughly machine the pulley frame side plate 6 lower sides of four round platforms. Loosen the pressure plate 1, reverse the side plate 6 of the pulley frame by 180 degrees, and use the four round tables processed just now as the positioning surfaces, and mill the upper and lower thicknesses of the side plate 6 of the pulley frame to meet the requirements. When finishing, use one point positioning, place the pulley frame side plate 6 on the clamp body 7, and make the designated assembly hole on the pulley frame side plate 6 cooperate with the positioning sleeve 4 on the clamp body, and press it on the clamp body with a circular pressure plate 3 After the pulley frame side plate 6, tighten with nuts, so that the pulley frame side plate 6 is clamped on the clamp body; simultaneously assist with support nails 8 on the four corners of the pulley frame side plate 6.

Claims (4)

1. A clamping body for processing pulley frame side plates, characterized in that: the upper surface of the clamping body (7) is a working surface, and symmetrical steps (13 ) and many holes (14) for positioning and installation, a short through groove is arranged between the two steps (13), the bottom surface of the short through groove is a section of positioning surface (11), and a step is arranged on the positioning surface (11) Hole (12), the upper section of step hole (12) is a light hole, and the lower section of step hole (12) is a threaded hole. 2. The clamp body for processing the side plate of the pulley frame according to claim 1, characterized in that: the upper surface of the clamp body (7) is provided with a plurality of pressure plates (1), auxiliary clamps A (9) and auxiliary clamp B (10). 3. The clamping body for processing the side plate of the pulley frame according to claim 1, characterized in that: the back of the clamping body (7) is provided with a plurality of rectangular grooves. 4. A processing and positioning method utilizing the device claimed in claim 1 to carry out the pulley frame side plate is characterized in that: utilize a kind of device, its structure is, the upper surface of clamp body (7) is working surface, along the clamp body (7) There are symmetrical steps (13) and many holes (14) for positioning and installation on both sides of the upper surface of the longitudinal axis. A short through groove is arranged between the two steps (13), and the bottom surface of the short through groove is a section for positioning. Surface (11), has a step hole (12) on the positioning surface (11), the upper section of the step hole (12) is a smooth hole, and the lower section of the step hole (12) is a threaded hole; the upper section of the clamp body (7) A plurality of pressing plates (1), auxiliary fixtures A (9) and auxiliary fixtures B (10) are arranged on the surface, First fix the clamp body (7) on the workbench of the machine tool, and then place the smooth surface of the pulley frame side plate (6) to be processed on the positioning surface (11) of the short through groove of the clamp body (7), according to the following Steps to implement: The first step is to use multi-point positioning for rough machining, that is, use multiple support nails (8) to support and position the four support surfaces of the pulley frame side plate (6) on the smooth surface, and press the pressure plate (1) through screws (5). Tightly on the step (13), use the auxiliary fixture A (9) and the auxiliary fixture B (10) to position the two ends of the side plate (6) of the pulley frame, and the pressing ends of each pressing plate (1) and the auxiliary fixture will simultaneously The pulley frame side plate (6) is pressed against the positioning surface (11), and rough machining is carried out according to the processing technology; The second step is to use one-point positioning for finishing, use four supporting nails (8) to perform auxiliary support on the four corners of the pulley frame side plate (6), and set them in the assembly holes of the pulley frame side plate (6) Insert the positioning sleeve (4), press the circular pressure plate (3) on the upper port of the positioning sleeve (4), insert the bolt (2) into the step hole (12) of the positioning sleeve (4) and the positioning surface (11), Press the side plate (6) of the pulley bracket on the positioning surface (11), and finish machining according to the processing technology.

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