Pump body blank boring and milling pressure maintaining clamp

Abstract

The utility model relates to the technical field of pump body blank clamps, and discloses a pump body blank boring and milling pressure maintaining clamp which comprises a clamp base, a pressing device is arranged at the top of the clamp base, and an adjusting clamping device is arranged at the top of the clamp base. The pressing device comprises a vertical frame, a mounting bolt, a top end connecting frame, a connecting bolt, a strip-shaped connecting frame, a bearing plate, a hydraulic telescopic rod, an upper clamp, a limiting rod and a limiting support. According to the boring and milling pressure maintaining clamp for the pump body blank, by arranging the adjusting clamping device, the two ends of the pump body blank are pressed on the top of the inner contact strip, so that the center of the bottom of the inner contact strip can make contact with the suction cup, then the suction cup is pressed, adsorption connection can be conducted through the suction cup, and therefore an assembly capable of assisting adsorption connection is arranged in the lower clamp; and the surface, making contact with the pump body, of the clamp is an arc-shaped contact surface when the clamp presses the pump body, the fitting degree with the surface of the pump body is large, the contact area is large, and the clamping strength is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump body blank fixture technical field, concretely is a kind of pump body blank boring and milling pressure retaining fixture. BACKGROUND

[0002] The background technology of pump body blank boring and milling pressure retaining fixture mainly relates to the field of machining, especially the precision machining process of complex parts such as pump body. In the manufacturing process of pump body, boring and milling is a key machining process for accurately forming the internal channels and shape of pump body. In order to ensure machining accuracy and efficiency, a special fixture is needed to fix the pump body blank to ensure its stability and accuracy during machining.

[0003] The prior art discloses a pump body blank boring and milling pressure retaining fixture with the features of: including a positioning plate, an oil cylinder seat is installed at the bottom of the positioning plate, a top rod seat is installed at the upper part of the positioning plate, and a top rod is slidably fitted in the top rod seat; an oil cylinder is installed on the oil cylinder seat, the extension rod of the oil cylinder is connected with a first pressure head, and the first pressure head is connected with the top rod; a bulge block is arranged at the upper end of the top rod seat, and the top rod drives the bulge block to open under the drive; a support is arranged at the upper part of the positioning plate, an auxiliary support rod is arranged on one side of the positioning plate through an auxiliary support seat, a center clamping force is arranged on one side of the auxiliary support seat, a pressure head seat is arranged on the center clamping force, and the pressure head seat is connected with a second pressure head; a pressing cylinder support is installed on the other side of the positioning plate, a pressing cylinder is installed on the pressing cylinder support, the extension end of the pressing cylinder is connected with one end of a pressing plate, and the other end of the pressing plate is connected with a pressing head through a pressing head screw. The clamping mode of the utility model is safe and reliable, can improve work efficiency, and reduce labor intensity.

[0004] The boring and milling pressure retaining fixture uses a one-way valve to seal the pipeline, and an accumulator assists in balancing the slight changes in oil pressure generated during machining, which can ensure the stability of oil pressure during the entire machining process. However, the boring and milling pressure retaining fixture contacts the pump body at a horizontal contact surface when pressing the pump body, which has a small surface adhesion to the pump body, resulting in a small contact area and low clamping strength, and the effect is not good during use, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a pump body blank boring and milling pressure retaining fixture to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pump body blank boring and milling pressure retaining fixture, including a fixture base, a pressing device is arranged on the top of the fixture base, and an adjusting clamping device is arranged on the top of the fixture base.

[0007] The pressing device includes a stand, mounting bolts, a top connecting frame, connecting bolts, a strip connecting frame, a bearing plate, a hydraulic telescopic rod, an upper clamp, a limiting rod, and a limiting bracket. The stand is connected to the top of the clamp base, the top connecting frame is fixedly connected to the top of the stand, the strip connecting frame is connected to the top of the top connecting frame, the connecting bolts are threadedly connected to the top of the top connecting frame and the inside of the strip connecting frame, the bearing plate is fixedly connected to the top of the strip connecting frame, the hydraulic telescopic rod is fixedly connected to the inside of the bearing plate, the upper clamp is fixedly connected to the bottom of the hydraulic telescopic rod, and the limiting rod is fixedly connected to the bottom of the upper clamp.

[0008] Preferably, the adjusting clamping device includes a lower clamp, an inner contact strip, an elastic pad, a central fracture groove, a suction cup, and a base frame. The lower clamp is fixedly connected to the top of the clamp base, the base frame is fixedly connected to the inside of the lower clamp near the bottom, and the inner contact strip is connected to the top of the base frame.

[0009] Preferably, the elastic pad is fixedly connected to the inside of the inner contact strip, and the intermediate fracture groove is opened at the top center of the inner contact strip.

[0010] Preferably, the suction cup is fixedly connected to the inside of the base frame, and the width of the suction cup is greater than the width of the base frame.

[0011] Preferably, the top of the clamp base is provided with a through hole, the diameter of which is adapted to the diameter of the limiting rod, and the limiting rod is slidably connected inside the through hole.

[0012] Preferably, the top of the clamp base is provided with a threaded groove, and the interior of the mounting bolt is provided with a connecting threaded hole with the same diameter as the threaded groove. The mounting bolt is threadedly connected to the interior of the threaded groove and the connecting threaded hole.

[0013] Preferably, the limiting bracket is fixedly connected to the top of the clamp base, and the limiting rod is slidably connected inside the limiting bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The pump body blank boring and milling pressure holding fixture is equipped with an adjusting clamping device to press the two ends of the pump body blank onto the top of the inner contact strip, so that the bottom center of the inner contact strip can contact the suction cup, and then press the suction cup in place. The suction cup can be used for adsorption connection. The fixture is equipped with components that can help adsorption connection, so that the surface of the fixture that contacts the pump body when pressing the pump body is an arc-shaped contact surface, which has a large fit with the pump body surface, a large contact area, and high clamping strength.

[0016] 2. The pump body blank boring and milling pressure maintaining clamp has the pressure combining device, the stand and the strip-shaped connecting frame are respectively installed on the top of the clamp base and the top connecting frame, and are connected and fixed by the mounting bolt and the connecting bolt, then the hydraulic telescopic rod is started to drive the upper clamp to move downwards until buckling on the top of the lower clamp, and the clamping of the pump body is completed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall three-dimensional front view structural schematic diagram of the utility model;

[0018] Figure 2 It is the overall three-dimensional front view structural schematic diagram of the utility model; Figure 1 It is the enlarged structure schematic diagram of A place in the utility model;

[0019] Figure 3 It is the overall three-dimensional front view structural schematic diagram of the utility model;

[0020] Figure 4 It is the enlarged structure schematic diagram of B place in the utility model. Figure 3

[0021] In the drawing: 1, clamp base; 2, pressure combining device; 201, stand; 202, mounting bolt; 203, top connecting frame; 204, connecting bolt; 205, strip-shaped connecting frame; 206, bearing plate; 207, hydraulic telescopic rod; 208, upper clamp; 209, limit rod; 210, limit support; 3, adjusting clamping device; 301, lower clamp; 302, inner contact strip; 303, elastic pad; 304, middle broken groove; 305, suction cup; 306, base frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides the following technical scheme:

[0024] A pump body blank boring and milling pressure maintaining clamp, comprising a clamp base 1, a pressure combining device 2 is arranged on the top of the clamp base 1, and an adjusting clamping device 3 is arranged on the top of the clamp base 1.

[0025] ​The pressing device 2 comprises a stand 201, a mounting bolt 202, a top connecting frame 203, a connecting bolt 204, a strip connecting frame 205, a bearing plate 206, a hydraulic telescopic rod 207, an upper clamp 208, a limiting rod 209 and a limiting support 210. The stand 201 is connected to the top of the clamp base 1. The top connecting frame 203 is fixedly connected to the top of the stand 201. The strip connecting frame 205 is connected to the top of the top connecting frame 203. The connecting bolt 204 is threadedly connected to the top of the top connecting frame 203 and the inside of the strip connecting frame 205. The bearing plate 206 is fixedly connected to the top of the strip connecting frame 205. The hydraulic telescopic rod 207 is fixedly connected to the inside of the bearing plate 206. The upper clamp 208 is fixedly connected to the bottom of the hydraulic telescopic rod 207. The limiting rod 209 is fixedly connected to the bottom of the upper clamp 208. The limiting support 210 is fixedly connected to the top of the clamp base 1. The limiting rod 209 is slidingly connected to the inside of the limiting support 210. The top of the clamp base 1 is provided with a through hole. The diameter of the through hole is matched with the diameter of the limiting rod 209. The limiting rod 209 is slidingly connected to the inside of the through hole. The top of the clamp base 1 is provided with a threaded groove. The inside of the mounting bolt 202 is provided with a connecting threaded hole with the same diameter as the threaded groove. The mounting bolt 202 is threadedly connected to the inside of the threaded groove and the connecting threaded hole.

[0026] The adjusting clamping device 3 comprises a lower clamp 301, an inner contact strip 302, an elastic pad 303, a middle broken groove 304, a suction disc 305 and a bottom frame 306. The lower clamp 301 is fixedly connected to the top of the clamp base 1. The bottom frame 306 is fixedly connected to the inside of the lower clamp 301 close to the bottom. The inner contact strip 302 is connected to the top of the bottom frame 306. The suction disc 305 is fixedly connected to the inside of the bottom frame 306. The width of the suction disc 305 is greater than that of the bottom frame 306. The elastic pad 303 is fixedly connected to the inside of the inner contact strip 302. The middle broken groove 304 is arranged at the center of the top of the inner contact strip 302.

[0027] In use, the pump body blank to be clamped is placed in the lower clamp 301, and the two ends of the pump body blank are pressed against the top of the inner contact strip 302, and then under the action of its own gravity, the inner contact strip 302 can be pressed downward, and under the action of the middle broken groove 304, the inner contact strip 302 can be pressed into a shape similar to a triangle, so that the bottom center of the inner contact strip 302 can be in contact with the suction cup 305, and then the suction cup 305 is pressed and held, and the suction cup 305 can be used for suction connection, so that the lower clamp is provided with an assembly that can help the suction connection, which can increase the clamping strength, and the top of the clamp base 1 is provided with a pressing device 2, in use, the stand 201 and the strip-shaped connecting frame 205 are respectively installed on the top of the clamp base 1 and the top connecting frame 203, and are respectively connected and fixed by the mounting bolt 202 and the connecting bolt 204, then the hydraulic telescopic rod 207 is started to drive the upper clamp 208 to move downward until it is buckled on the top of the lower clamp 301, the clamping of the pump body is completed, and the clamping device 3 is adjusted to make the surface of the clamp in contact with the pump body when pressing the pump body is an arc contact surface, which has high adhesion and large contact area with the pump body surface, high clamping strength, and good effect in use.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A boring and milling fixture for holding a pump body blank, comprising a fixture base (1), characterized in that: The top of the clamp base (1) is provided with a pressing device (2), and the top of the clamp base (1) is provided with an adjusting clamping device (3). The pressing device (2) comprises a stand (201), a mounting bolt (202), a top connecting frame (203), a connecting bolt (204), a strip-shaped connecting frame (205), a bearing plate (206), a hydraulic telescopic rod (207), an upper clamp (208), a limiting rod (209) and a limiting support (210), the stand (201) is connected to the top of the clamp base (1), the top connecting frame (203) is fixedly connected to the top of the stand (201), the strip-shaped connecting frame (205) is connected to the top of the top connecting frame (203), the connecting bolt (204) is threadedly connected to the top of the top connecting frame (203) and the inside of the strip-shaped connecting frame (205), the bearing plate (206) is fixedly connected to the top of the strip-shaped connecting frame (205), the hydraulic telescopic rod (207) is fixedly connected to the inside of the bearing plate (206), the upper clamp (208) is fixedly connected to the bottom of the hydraulic telescopic rod (207), and the limiting rod (209) is fixedly connected to the bottom of the upper clamp (208).

2. The pump body blank boring and milling fixture of claim 1, wherein: The adjusting clamping device (3) comprises a lower clamp (301), an inner contact strip (302), an elastic pad (303), a middle broken groove (304), a suction cup (305) and a bottom frame (306), the lower clamp (301) is fixedly connected to the top of the clamp base (1), and the bottom frame (306) is fixedly connected to the inside of the lower clamp (301) close to the bottom.

3. The pump body blank boring and milling fixture of claim 2, wherein: The elastic pad (303) is fixedly connected to the inside of the inner contact strip (302), and the middle broken groove (304) is arranged at the top center of the inner contact strip (302).

4. The pump body blank boring and milling fixture of claim 2, wherein: The suction cup (305) is fixedly connected to the inside of the bottom frame (306), and the width of the suction cup (305) is greater than that of the bottom frame (306).

5. The pump body blank boring and milling fixture of claim 1, wherein: A through hole is formed in the top of the clamp base (1), the diameter of the through hole is matched with the diameter of the limiting rod (209), and the limiting rod (209) is slidably connected to the inside of the through hole.

6. The pump body blank boring and milling fixture of claim 1, wherein: A threaded groove is formed in the top of the clamp base (1), a connecting threaded hole with the same diameter as the threaded groove is formed in the inside of the mounting bolt (202), and the mounting bolt (202) is threadedly connected to the inside of the threaded groove and the connecting threaded hole.

7. The pump body blank boring and milling fixture of claim 1, wherein: The limiting support (210) is fixedly connected to the top of the clamp base (1), and the limiting rod (209) is slidably connected to the inside of the limiting support (210).

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