A new process for machining a piston compressor body

Abstract

The present application is a kind of new technology for processing piston compressor body, comprising the following steps: step one, the piston compressor body is horizontally placed on the workbench of horizontal machining center, the left end face and the right end face of the piston compressor body are respectively rough-milled, and the positioning hole is fine-bored; step two, the piston compressor body is vertically placed on the workbench of horizontal machining center, the bottom surface of the piston compressor body is fine-milled, and the four ground corner holes are fine-milled; step three, the piston compressor body is horizontally placed on the workbench of horizontal machining center, the end face and the inner hole of the piston compressor body are processed through the diagonal two ground corner holes positioning; step four, the piston compressor body is vertically placed on the workbench of horizontal machining center, the four characteristic features around the piston compressor body are processed. The process is simple to operate, can be mass-produced, only uses a horizontal machining center to complete the processing, greatly reduces the equipment cost and improves the work efficiency, saves the production cost.

Description

Technical Field

[0001] This invention belongs to the field of piston compressor body processing technology, specifically relating to a new process for processing piston compressor bodies. Background Technology

[0002] Piston compressors, as important equipment widely used in industrial fields, have their performance and service life largely dependent on the machining quality of their bodies. Since the piston compressor body is a casting, none of its surfaces serve as a reference for subsequent machining after casting. Therefore, identifying the reference surface is a key challenge in machining this product. Traditional piston compressor bodies require equipment such as double-sided grinders, vertical machining centers, and horizontal machining centers, resulting in complex machining processes, numerous equipment requirements, and low machining efficiency. Summary of the Invention

[0003] Therefore, the present invention aims to solve the problems of complex processing procedures and low processing efficiency in the prior art.

[0004] Therefore, the technical solution adopted is a new process for processing piston compressor bodies according to the present invention, characterized by comprising the following steps:

[0005] Step 1: Place the piston compressor body horizontally on the worktable of the horizontal machining center, clamp and fix it with a fixture, rough mill the left and right end faces of the piston compressor body respectively, and finish bore the positioning holes.

[0006] Step 2: Remove the fixture, place the piston compressor body vertically on the worktable of the horizontal machining center, align it with the rotation center of the horizontal machining center through the positioning hole, finish mill the bottom surface of the piston compressor body, and finish mill the four corner holes;

[0007] Step 3: Remove the fixture, place the piston compressor body horizontally on the worktable of the horizontal machining center, clamp and fix it with the fixture, and position it through the two diagonal corner holes. Machin the end face and inner hole of the piston compressor body.

[0008] Step 4: Remove the fixture, place the piston compressor body vertically on the worktable of the horizontal machining center, and machine the features around the piston compressor body by aligning it with the rotation center of the horizontal machining center through the positioning holes.

[0009] Preferably, in step one, the diameter of the positioning hole is 219.02 mm to 219.08 mm.

[0010] Preferably, in step two, the diameter of the ground hole is 18.06 mm to 18.12 mm.

[0011] Preferably, in step two, the distance between the bottom surface and the axis of the positioning hole is 144.9 mm to 145.1 mm.

[0012] Preferably, in step one, the distance between the left and right end faces of the piston compressor body is 588.9 mm to 589.1 mm.

[0013] Preferably, in step two, the distance between the axes of adjacent corner holes in the width direction of the piston compressor body is 269.99 mm to 270.01 mm.

[0014] The technical solution of this invention has the following advantages: the process first rough mills the left and right end faces of the piston compressor body as rough references, then finish mills the bottom surface of the piston compressor body and finish mills the four corner holes as fine references, and then processes the required technical features based on the fine references. The operation is simple, it can be mass-produced, and only a horizontal machining center is used to complete the processing, which greatly reduces equipment costs and improves work efficiency, thus saving production costs.

[0015] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the machining process of the piston compressor body being placed horizontally for the first time in this invention;

[0019] Figure 2 This is a schematic diagram of the vertically positioned piston compressor body in this invention.

[0020] Figure 3 This is a schematic diagram of the second horizontal placement of the piston compressor body in this invention;

[0021] Figure 4 This is a front view of the piston compressor body after machining in this invention;

[0022] Figure 5 This is a left view of the piston compressor body after machining in this invention.

[0023] Among them, 1. Piston compressor body; 2. Left end face; 3. Right end face; 4. Positioning hole; 5. Bottom surface; 6. Corner hole. Detailed Implementation

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] This invention provides a new process for machining piston compressor bodies, such as... Figure 1-5 As shown, it includes the following steps:

[0029] Step 1: Place the piston compressor body 1 horizontally on the worktable of the horizontal machining center and fix it with a clamp. Rough mill the left end face 2 and right end face 3 of the piston compressor body 1 respectively, and finish bore the positioning hole 4. During rough milling, the left end face 2 and right end face 3 should be reflective and shiny when exposed to light, and the flatness should not exceed 0.1mm. Leave a 2mm machining allowance for rough milling. Use a D80 face milling cutter to mill the end face, with a spindle speed of 600r / min, a feed rate of 600mm / min, and a depth of cut of 2mm.

[0030] Step 2: Disassemble the fixture, place the piston compressor body 1 vertically on the worktable of the horizontal machining center, and align it with the rotation center of the horizontal machining center through the positioning hole 4. Mill the bottom surface 5 of the piston compressor body 1 and the four corner holes 6 as the positioning dimensions for the next process.

[0031] Step 3: Remove the fixture, place the piston compressor body 1 horizontally on the worktable of the horizontal machining center, and fix it by clamping with the fixture. Position it through the two diagonal corner holes 6, and machine the end face and inner hole of the piston compressor body 1. The positioning of the two diagonal corner holes 6 and the positioning boss on the tooling can ensure that the body is in the same position every time it is installed without adjusting the machining program.

[0032] Step 4: Remove the fixture and place the piston compressor body 1 vertically on the worktable of the horizontal machining center. Align the positioning hole 4 with the rotation center of the horizontal machining center and machine the features around the piston compressor body 1.

[0033] The beneficial technical effects of the above technical solution are as follows: This process first rough mills the left end face 2 and right end face 3 of the piston compressor body 1 as rough references, then finish mills the bottom surface 5 of the piston compressor body 1 and finish mills the four corner holes 6 as fine references, and then processes the required technical features based on the fine references. The operation is simple, it can be mass-produced, and only a horizontal machining center is used to complete the processing, which greatly reduces equipment costs and improves work efficiency, thus saving production costs.

[0034] In one embodiment, the diameter of the positioning hole 4 is 219.02 mm to 219.08 mm. The positioning hole 4 is precision bored to meet the positioning requirements of the next step. The positioning hole 4 is first rough bored to 218.5 mm, and then finish bored to the required size of 219 mm. Rough boring uses a double-edged rough boring tool, with a spindle speed of 300 r / min, a feed rate of 50 mm / min, and a depth of cut of 2-3 mm. Finish boring uses a single-edged finish boring tool, with a spindle speed of 350 r / min, a feed rate of 30 mm / min, and a depth of cut of 0.25 mm. Finish boring ensures the accuracy of the positioning hole.

[0035] In one embodiment, the diameter of the corner hole 6 is 18.06mm to 18.12mm. Finish milling directly mills the dimension to the required position, while rough milling allows for machining allowance. For finish milling, a D10 center drill bit is used for initial positioning, followed by drilling through with a D17.8 drill bit, and then reaming to the required size with a D18 reamer. Dimensional tolerances are used to ensure precise fit for subsequent positioning, improving positioning accuracy.

[0036] In one embodiment, the distance between the bottom surface 5 and the axis of the positioning hole 4 is 144.9mm to 145.1mm. By adjusting the adjustable bolts of the positioning angle on the tooling, the bottom surface of the piston compressor body 1 base is made flush with the side of the tooling base. A D20 cylindrical end mill is used, and a tool setter is used to ensure that the relative position between the cylindrical end mill and the piston compressor body 1 is accurate. The spindle speed is 400r / min and the feed rate is 60mm / min to ensure the machining accuracy of the bottom surface. The bottom surface serves as the machining reference for the end face and inner hole of the piston compressor body, thereby ensuring the machining accuracy of the end face and inner hole of the piston compressor body.

[0037] In one embodiment, the distance between the left end face 2 and the right end face 3 of the piston compressor body 1 is 588.9mm to 589.1mm. A D20 cylindrical milling cutter is used, with a spindle speed of 300r / min and a feed rate of 40mm / min to ensure the machining accuracy of the two end faces and to ensure the accuracy of the piston compressor body 1 when it is installed vertically.

[0038] In one embodiment, the distance between the axes of adjacent corner holes 6 in the width direction of the piston compressor body 1 is 269.99mm to 270.01mm. The corner holes 6 are first positioned by a D10 center drill bit, then drilled through with a D17.8 drill bit, and then reamed to the required size with a D18 reamer. The corner holes are positioned by tight fit with the positioning boss on the tooling, thereby improving the positioning accuracy of the piston compressor body 1 when it is horizontally arranged.

[0039] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A new process for machining the body of a piston compressor, characterized in that, Includes the following steps: Step 1: Place the piston compressor body (1) horizontally on the worktable of the horizontal machining center and fix it with a clamp. Perform rough milling on the left end face (2) and right end face (3) of the piston compressor body (1) respectively, and finish boring the positioning hole (4). For rough milling, the left end face (2) and right end face (3) should reflect light and be shiny, and the flatness should not be greater than 0.1mm. Leave a 2mm machining allowance for rough milling. Use a D80 face milling cutter to mill the end face, with a spindle speed of 600r / min, a feed rate of 600mm / min, and a depth of cut of 2mm. For finish boring, use a single-edged finish boring cutter, with a spindle speed of 350r / min, a feed rate of 30mm / min, and a depth of cut of 0.25mm. Step 2: Disassemble the fixture and place the piston compressor body (1) vertically on the worktable of the horizontal machining center. Align the positioning hole (4) with the rotation center of the horizontal machining center, finish mill the bottom surface (5) of the piston compressor body (1), and finish mill the four corner holes (6). For finish milling, first use a D10 center drill to locate the point, then use a D17.8 drill bit to drill through, and then use a D18 reamer to ream to the required size. Step 3: Disassemble the fixture, place the piston compressor body (1) horizontally on the worktable of the horizontal machining center, clamp and fix it with the fixture, and position it through the two corner holes (6) at opposite corners, and machine the end face and inner hole of the piston compressor body (1); Step 4: Remove the fixture and place the piston compressor body (1) vertically on the worktable of the horizontal machining center. Align the positioning hole (4) with the rotation center of the horizontal machining center and machine the features around the piston compressor body (1).

2. A novel process for machining a piston compressor body according to claim 1, characterized in that, In step one, the diameter of the positioning hole (4) is 219.02 mm to 219.08 mm.

3. A novel process for machining a piston compressor body according to claim 1, characterized in that, In step two, the diameter of the corner hole (6) is 18.06 mm ~ 18.12 mm.

4. A novel process for machining a piston compressor body according to claim 1, characterized in that, In step two, the distance between the bottom surface (5) and the axis of the positioning hole (4) is 144.9 mm ~ 145.1 mm.

5. A novel process for machining a piston compressor body according to claim 1, characterized in that, In step one, the distance between the left end face (2) and the right end face (3) of the piston compressor body (1) is 588.9mm~589.1mm.

6. A novel process for machining a piston compressor body according to claim 1, characterized in that, In step two, the distance between the axes of adjacent corner holes (6) in the width direction of the piston compressor body (1) is 269.99mm~270.01mm.

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