CN205096878U - Oil diffusion pump ring flange machining anchor clamps - Google Patents

Abstract

The utility model relates to an oil diffusion pump ring flange machining anchor clamps, including base, X to or Y to alignment groove, second grade notch cuttype cylindric lock, above the base center set up X to or Y to the alignment groove, be equipped with the three second grade notch cuttype cylindric lock that the processing flange carries out angular positioning that is used for treating above the base, the equipartition is three along the circumference of center on above the base is used for waiting to process the flange and presss from both sides tight clamping device. The utility model discloses simple structure, easily the alignment makes things convenient for oil diffusion pump ring flange part clamping alignment, has improved the shortcoming of traditional location method inefficiency, reduces the manual operation error, reduces workman intensity of labour, has improved the part manufacturing accuracy, has promoted production efficiency.

Description

Oil diffusion pump flange machining fixture

technical field

The utility model relates to a fixture for processing a flange, in particular to a fixture for processing a flange of an oil diffusion pump.

Background technique

Flanges are parts that are connected to each other between pipes and are used for connection between pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used for connection between two equipments. In the process of flange production, it is necessary to perform clamping and positioning, scribing and other processing work. The traditional processing and positioning method of the oil diffusion pump flange is inefficient, and the error rate of manual operation is high, the positioning accuracy is unstable, and parts are likely to be scrapped, which is not suitable for mass production.

Contents of the invention

In order to effectively avoid the defects of the traditional positioning scheme, the utility model provides an oil diffusion pump flange machining fixture that is easy to clamp and align.

In order to achieve the above purpose, the technical solution of this utility model is: a mechanical processing fixture for the oil diffusion pump flange, including a base, an X-direction or Y-direction alignment groove, and a two-stage stepped cylindrical pin. Alignment grooves are provided in the X or Y direction, and three two-stage stepped cylindrical pins are provided on the base for angular positioning of the flange to be processed; three are evenly distributed on the base along the center position for Clamping device for clamping flanges to be processed.

The clamping device is composed of a clamping block, a pad, and a locking bolt. The pad is fixed on the base, the middle of the pad is threaded to connect the locking bolt, and the front end of the locking bolt is connected to the clamping block. The clamping block has a The outer diameter of the flange matches the circular arc clamping surface, and the diameter of the circular arc is 0.02 to 0.2mm larger than the diameter of the flange.

An air outlet hole is arranged under the two-stage stepped cylindrical pin, the diameter of the air outlet hole is 2/3 to 1/3 of the diameter of the pin hole, and the two ends of the two-stage stepped cylindrical pin are inclined at an angle of 45°.

The center of the base is provided with a central positioning hole and a quick alignment hole, the diameter of the quick alignment hole is 14-40 mm, the diameter of the central positioning hole is 2 to 5 times the diameter of the quick alignment hole, and the depth of the central positioning hole is greater than that in the X direction or The depth of the alignment groove in the Y direction is 5-10mm, the opening of the center positioning hole and the quick alignment hole are beveled at 45°, and the bottom of the center positioning hole is rounded.

The width of the X-direction or Y-direction alignment groove is 1/2 to 1/3 of the diameter of the central positioning hole, and the depth is 1/3 of the thickness of the base. The upper end of the X-direction or Y-direction alignment groove is inclined at 45 degrees. Corners, bottom rounded.

The fixture for machining the flange of the oil diffusion pump is fixed on the working table of the machine tool through bolts and nuts.

The beneficial effects of the utility model are:

The utility model facilitates the clamping and alignment of the flange parts of the oil diffusion pump, improves the disadvantages of low efficiency of the traditional positioning method, reduces human operation errors, reduces the labor intensity of workers, improves the manufacturing precision of the parts, and improves the production efficiency.

Description of drawings

Figure 1 is a top view of the machining fixture for the oil diffusion pump flange;

Fig. 2 is a cross-sectional view of the fixture for machining the flange of the oil diffusion pump along the line A-A in Fig. 1 .

detailed description

Below in conjunction with figure and embodiment the utility model is further described.

As shown in Figures 1 and 2, the oil diffusion pump flange part D with a diameter of 785mm to be processed in this embodiment. The oil diffusion pump flange machining fixture is fixed on the machine table through bolts and nuts, which includes base 1, X-direction or Y-direction alignment groove 2, clamping block 3, flange plate 4, cushion block 5, locking Bolt 6, bolt placement slot 7, two-step stepped cylindrical pin 8, vent hole 9, quick alignment hole 10, center positioning hole 11, clamping platform 12.

The center of the base 1 is provided with an X-direction or Y-direction alignment groove 2, and the base 1 is provided with three two-stage stepped cylindrical pins 8 for angular positioning of the flange to be processed; Cloth three clamping devices for clamping the flange to be processed.

The clamping device is composed of a clamping block 3, a spacer 5, and a locking bolt 6. The spacer 5 is fixed on the base 1, the middle of the spacer 5 is threaded to connect the locking bolt 6, and the front end of the locking bolt 6 is connected to the clamping block 3. The clamping block 3 has an arc clamping surface matching the outer diameter of the flange 4, and the diameter of the arc is 0.02-0.2 mm larger than the diameter of the flange.

Air outlet 9 is arranged below the two-level stepped cylindrical pin 8, and the diameter of the air outlet 9 is 2/3～1/3 of the pin hole diameter, and the two ends of the two-level stepped cylindrical pin 8 are inclined at 45°. The center of the base 1 is provided with a quick alignment hole 10 and a central positioning hole 11, the diameter of the quick alignment hole 10 is 14-40 mm, the diameter of the central positioning hole 11 is 2 to 5 times the diameter of the quick alignment hole 10, and the central alignment hole (K) The depth is greater than that of the X-direction or Y-direction alignment groove. (2) The depth is 5-10mm. The center positioning hole 11 and the quick alignment hole 10 are beveled at 45°, and the bottom of the center positioning hole 11 is rounded. The width of the X-direction or Y-direction alignment groove 2 is 1/2 to 1/3 of the diameter of the central positioning hole 11, and the depth is 1/3 of the thickness of the base 1. The upper end of the X-direction or Y-direction alignment groove 2 is inverted 45 degree bevel, bottom rounded.

The flange fixture of the oil diffusion pump uses three two-stage stepped cylindrical pins 8 for angular positioning of the flange to be processed. An air outlet 9 is arranged under the pin hole to get rid of redundant air in the pin hole, so as to facilitate the installation of the cylindrical alignment pin. The major diameter of the positioning pin is 24mm, the minor diameter is 18mm, and the diameter of the air outlet is 12mm.

A fast alignment hole 10 and a center positioning hole 11 are set in the center of the machining fixture of the flange of the oil diffusion pump. The positioning rod for clamping the spindle of the machine tool relies on the fast positioning hole to quickly locate the center of the fixture, and finally uses the lever table adsorbed on the spindle to rely on the center. The alignment hole is used to accurately locate the center of the tooling. The diameter of the quick positioning hole is set to 30mm, and the diameter of the center positioning hole 11 is 80mm. The center alignment hole depth is 25mm.

The machining fixture of the oil diffusion pump flange is provided with an X-direction or Y-direction alignment groove 2 at the position passing the center of the tooling, which is convenient for the machine tool spindle to absorb the lever dial indicator to quickly align the fixture in the X-direction or Y-direction. The alignment groove width is 40mm and the depth is about 20mm. The upper end of the aligning slot is 3mm at a 45° bevel, and the bottom is rounded at R=5mm.

The fixture clamping device is composed of clamping block 3, spacer 5 and locking bolt 6. The clamping and fastening of flanges with different diameters can be achieved by adjusting the locking bolt or replacing the clamping block. The size of the clamping surface on the clamping block 3 matching the outer diameter of the flange 4 is R=785/2+0.1=392.6mm.

Fix the machining fixture of the oil diffusion pump flange to the working table of the machine tool by means of bolts and nuts.

The fixture is easy to align, which is convenient for clamping and aligning the flange parts of the oil diffusion pump, improves the shortcomings of the traditional positioning method inefficiency, reduces human operation errors, reduces labor intensity of workers, improves the manufacturing accuracy of parts, and improves production efficiency. .

Claims (6)

1. an oil diffusion pump ring flange clamping tool for machine work, comprise base (1), X to or Y-direction centering groove (2), secondary notch cuttype straight pin (8), it is characterized in that: described base (1) above center arrange X to or Y-direction centering groove (2), described base (1) is provided with three are carried out angle location secondary notch cuttype straight pin (8) for treating processing flange above; Described base (1) centrally position circumferentially uniform three clamping devices carrying out clamping for flange to be processed above.

2. oil diffusion pump ring flange clamping tool for machine work according to claim 1, it is characterized in that: described clamping device is made up of clamp (3), cushion block (5), clamping screw (6), cushion block (5) is fixed on above base (1), cushion block (5) intermediate thread connects clamping screw (6), clamping screw (6) front end connects clamp (3), described clamp (3) has the circular arc clamping area matched with ring flange (4) external diameter, and the diameter of circular arc is greater than flange diameter 0.02 ~ 0.2mm.

3. oil diffusion pump ring flange clamping tool for machine work according to claim 1, is characterized in that: described in

Secondary notch cuttype straight pin (8) sets out pore (9) below, and venthole (9) diameter is 2/3 ~ 1/3 of pin-and-hole diameter, and fall 45 ° of oblique angles at secondary notch cuttype straight pin (8) two ends.

4. oil diffusion pump ring flange clamping tool for machine work according to claim 1, it is characterized in that: described base (1) center is provided with fast aligning hole (10) and center positioning hole (11), fast aligning hole (10) diameter is 14 ~ 40mm, center positioning hole (11) diameter is 2 ~ 5 times of fast aligning hole (10) diameter, center positioning hole (11) degree of depth be greater than X to or Y-direction centering groove (2) degree of depth 5 ~ 10mm, fall 45 ° of oblique angles for center positioning hole (11) and fast aligning hole (10) aperture, center positioning hole (11) bottom rounding.

5. oil diffusion pump ring flange clamping tool for machine work according to claim 1, it is characterized in that: described X to or Y-direction centering groove (2) width centered by locating hole (11) diameter 1/2 ~ 1/3, the degree of depth is 1/3 of base (1) thickness, described X to or Y-direction centering groove (2) upper end fall 45 degree of oblique angles, bottom rounding.

6. the oil diffusion pump ring flange clamping tool for machine work according to any one of claim 1-5, is characterized in that: described oil diffusion pump ring flange clamping tool for machine work is fixed on platen face by screw bolt and nut.