A combined tooling for quick clamping of a hydraulic chuck and a machining method

Abstract

The present application relates to the technical field of machining, in particular to a combined tooling for quick clamping of a hydraulic chuck and a machining method, the combined tooling comprising a hydraulic chuck and a three-jaw chuck, further comprising a V-shaped combined tooling which is manufactured according to the profile of the hydraulic chuck and is installed on the hydraulic chuck, the V-shaped combined tooling comprising a V-shaped upper clamp connected with the hydraulic chuck, a V-shaped lower clamp connected with the V-shaped upper clamp, and a positioning strip passing through the V-shaped lower clamp, the V-shaped upper clamp and the V-shaped lower clamp are both axisymmetric. Compared with the prior art, the present application provides a combined tooling for quick clamping of a hydraulic chuck and a machining method, which can realize quick and accurate clamping, effectively avoiding the problems of consuming a large amount of machining preparation time due to repeated adjustment of the moving distance of the three-jaw chuck, and low overall machining efficiency due to the need for re-adjustment when clamping different specifications of parts.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a combination tooling and machining method for rapid clamping of hydraulic chucks. Background Technology

[0002] Hydraulic chucks are commonly used for clamping and machining parts. However, due to the large number of teeth and small tooth pitch of the jaws as they move axially within the chuck, the part must be placed at the center of the chuck during operation, and multiple adjustments must be made using a depth gauge to ensure that the three jaws move the same distance. This means the center point of the clamped part must be aligned with the center point of the chuck, preventing misalignment. Repeatedly adjusting the jaws' movement consumes a significant amount of preparation time, and readjustment is required for parts of different specifications, resulting in low overall machining efficiency. Therefore, a combination tooling that enables rapid clamping with a chuck is needed. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a combined tooling and processing method for rapid clamping of hydraulic chucks.

[0004] The technical problem to be solved by this invention is achieved by the following technical solution:

[0005] A combination tooling for quick clamping of a hydraulic chuck includes a hydraulic chuck and a three-jaw chuck, and also includes a V-shaped combination tooling manufactured according to the shape of the hydraulic chuck and installed on the hydraulic chuck. The V-shaped combination tooling includes an upper V-shaped clamp connected to the hydraulic chuck, a lower V-shaped clamp fitted and connected to the upper V-shaped clamp, and a positioning strip passing through the lower V-shaped clamp. The upper V-shaped clamp and the lower V-shaped clamp are both symmetrical about the central axis.

[0006] Preferably, the upper V-shaped clamp and the lower V-shaped clamp are made of hard aluminum alloy, and the positioning strip is made of alloy steel.

[0007] Preferably, the V-shaped upper clamp is provided with an arc groove.

[0008] Preferably, the V-shaped upper clamp is formed by the intersection of a first arc edge and two first inclined edges, and the intersection of the two first inclined edges is located on the central axis of the hydraulic chuck.

[0009] Preferably, the V-shaped upper clamp is provided with four first threaded holes.

[0010] Preferably, the V-shaped lower clamp is formed by the intersection of a second circular arc edge and two second inclined edges, and the intersection of the two second inclined edges is located on the central axis of the hydraulic chuck.

[0011] Preferably, the V-shaped lower clamp is provided with four second threaded holes corresponding to the positions of the four first threaded holes.

[0012] Preferably, a movable groove is provided at the middle position of the V-shaped lower clamp. The movable groove is composed of a semi-circular arc and a straight edge. A limit hole is provided at the upper end of the movable groove. The movable groove is in clearance fit with the positioning strip.

[0013] Preferably, the lower end of the positioning strip is rounded, and a scale line is provided with the lower end as the starting point.

[0014] A machining method for a combination tooling for quick clamping of a hydraulic chuck, comprising the following steps:

[0015] Step 1: The fixture is made of cemented carbide, and the machining method is positive wire electrical discharge machining and external flushing liquid cooling.

[0016] Step 2: Set the processing parameters: processing current 3-5A, pulse width 30-50μs, duty cycle 1:5-1:7;

[0017] Step 3: Based on the processing method used in Step 1 and the processing parameters set in Step 2, process the V-shaped upper clamp and V-shaped lower clamp from the cemented carbide material used in Step 1, install the V-shaped upper clamp on the hydraulic chuck, and then install the V-shaped lower clamp on the V-shaped upper clamp.

[0018] Step 4: Make a positioning strip using alloy steel and laser engrave scale lines on the surface of the positioning strip, with the lowest point being the starting point and the scale being zero.

[0019] Step 5: Install the positioning strip into the moving groove. Calculate the movement value L using the theoretical overall length formula: L=R1+R2+h1. After moving the positioning strip a specific distance, fix the positioning strip with screws at the position of the limiting hole.

[0020] The beneficial effects of this invention are:

[0021] Compared with the prior art, the present invention provides a combination tooling and processing method for quick clamping of hydraulic chucks, which can achieve fast and accurate clamping, effectively avoiding the problems of existing methods such as repeatedly adjusting the movement distance of the three jaws, which consumes a lot of processing preparation time, requiring readjustment when clamping parts of different specifications, and low overall processing efficiency. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0024] Figure 2This is a schematic diagram of the V-shaped combined tooling of the present invention;

[0025] Figure 3 This is a schematic diagram of the V-shaped upper clamp of the present invention;

[0026] Figure 4 This is a schematic diagram of the V-shaped lower clamp of the present invention. Figure 1 ;

[0027] Figure 5 Schematic diagram of the structure of the V-shaped lower clamp for invention Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the positioning strip of the present invention;

[0029] In the diagram: 1. V-shaped combination fixture; 2. Hydraulic chuck; 3. Three-jaw chuck; 4. V-shaped upper clamp; 41. Outer arc groove; 42. First bevel; 43. First arc edge; 44. First threaded hole; 5. V-shaped lower clamp; 51. Limiting hole; 52. Second bevel; 53. Second arc edge; 54. Moving groove; 541. Semicircular arc; 542. Straight edge; 55. Second threaded hole; 6. Positioning bar; 61. Scale line. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figures 1 to 6 As shown, a combination tooling for quick clamping of a hydraulic chuck includes a hydraulic chuck 2, a three-jaw 3, and a V-shaped combination tooling 1 designed for quick clamping and fixing based on the shape of the hydraulic chuck 2 and the movement mode of the three-jaw 3.

[0032] Furthermore, the V-shaped assembly tooling 1 is mainly composed of an upper V-shaped clamp 4, a lower V-shaped clamp 5, and a positioning strip 6.

[0033] The V-shaped upper clamp 4 is made of hard aluminum alloy and is manufactured according to the shape of the hydraulic chuck 2, with the two fitting tightly together. The V-shaped upper clamp 4 is symmetrical about its central axis; the V-shaped upper clamp 4 is provided with a circular arc groove 41 manufactured in accordance with the shape.

[0034] The V-shaped upper clamp 4 is formed by wire cutting and is formed by the intersection of a first arc edge 43 and two first inclined edges 42; the intersection of the two first inclined edges 42 is located on the central axis of the hydraulic chuck 2.

[0035] The upper V-shaped clamp 4 is provided with four first threaded holes 44 for screw connection with the lower V-shaped clamp 5.

[0036] The V-shaped lower clamp 5 is manufactured by mimicking the shape of the V-shaped upper clamp 4. The V-shaped lower clamp 5 is made of hard aluminum alloy and is symmetrical about the central axis. The shape of the V-shaped lower clamp 5 is formed by wire cutting and is formed by the intersection of the second arc edge 53 and two second inclined edges 52. The intersection of the two second inclined edges 52 is located on the central axis of the hydraulic chuck 2.

[0037] The V-shaped lower clamp 5 is provided with four second threaded holes 55, the positions of which match the positions of the four first threaded holes 44, so as to realize the V-shaped upper clamp 4 and the V-shaped lower clamp 5 through screw engagement.

[0038] Furthermore, a movable groove 54 is provided in the middle of the V-shaped lower clamp 5. The movable groove 54 is composed of a semi-circular arc 541 and a straight edge 542, with the semi-circular arc 541 and the straight edge 542 being tangent. A limiting hole 51 is provided at the upper end of the movable groove 54. The limiting hole 51 is a threaded hole, which is used to position the positioning strip 6 by means of a screw. The diameter of the positioning strip 6 is approximately smaller than the diameter of the semi-circular arc 541, and the two are in clearance fit.

[0039] The positioning strip 6 is made of alloy steel. Scale lines 61 are set on the surface of the positioning strip 6 by laser engraving, with the bottom end being the starting point and the scale being zero. The bottom end of the positioning strip 6 is circular in shape to avoid scratching the operator.

[0040] A machining method for a combination tooling for quick clamping of a hydraulic chuck, comprising the following steps:

[0041] Step 1: The fixture is made of cemented carbide. In this invention, the shape of the fixture is related to the diameter of the metal wire in the wire electrical discharge machining. The machine tool uses φ0.2mm molybdenum wire for machining. To prevent the wire electrical discharge from burning the surface of the part, external liquid cooling is used to fully cool the workpiece. In addition, the wire electrical discharge machining is a non-contact discharge machining. There is no macroscopic cutting force between the tool electrode and the workpiece, and there will be no error caused by mechanical deformation. To ensure the surface quality and machining efficiency of the formed workpiece, a positive polarity machining method is used.

[0042] Step 2: Set the machining parameters: machining current 3-5A, pulse width 30-50μs, duty cycle 1:5-1:7. These parameters ensure high dimensional accuracy of the machined fixture and the formation of a molten metal layer on its surface. This molten metal layer effectively protects the operator from prolonged contact that could lead to aluminum alloy passivation.

[0043] Step 3: Based on the processing method used in Step 1 and the processing parameters set in Step 2, process the V-shaped upper clamp 4 and V-shaped lower clamp 5 from the cemented carbide material used in Step 1, install the V-shaped upper clamp 4 on the hydraulic chuck 2, and then install the V-shaped lower clamp 5 on the V-shaped upper clamp 4.

[0044] Step 4: Make the positioning strip 6 using alloy steel, and make scale lines 61 on the surface of the positioning strip 6 by laser engraving, with the lower end as the starting point and the scale being zero.

[0045] Step 5: Install the positioning strip 6 into the moving groove 54. Calculate the movement value L using the theoretical overall length formula: L=R1+R2+h1. After moving the positioning strip 6 a specific distance, fix the positioning strip 6 with screws at the position of the limiting hole 51.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely prisms of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A combination tooling for quick clamping of a hydraulic chuck, comprising a hydraulic chuck (2) and a three-jaw chuck (3), characterized in that: It also includes a V-shaped assembly tooling (1) manufactured according to the shape of the hydraulic chuck (2) and installed on the hydraulic chuck (2). The V-shaped assembly tooling (1) includes a V-shaped upper clamp (4) connected to the hydraulic chuck (2), a V-shaped lower clamp (5) fitted to the V-shaped upper clamp (4), and a positioning strip (6) passing through the V-shaped lower clamp (5). The V-shaped upper clamp (4) and the V-shaped lower clamp (5) are both symmetrical about the intermediate axis. The fixture (4) is provided with an arc groove (41), and the V-shaped lower clamp (5) is provided with a moving groove (54) in the middle position. The moving groove (54) is composed of a semi-circular arc (541) and a straight edge (542). The upper end of the moving groove (54) is provided with a limiting hole (51). The moving groove (54) is in clearance fit with the positioning strip (6). The lower end of the positioning strip (6) is rounded, and a scale line (61) is provided with the lower end as the starting point.

2. The combined tooling for quick clamping of a hydraulic chuck according to claim 1, characterized in that: The V-shaped upper clamp (4) and V-shaped lower clamp (5) are made of hard aluminum alloy, and the positioning strip (6) is made of alloy steel.

3. The combined tooling for quick clamping of a hydraulic chuck according to claim 1, characterized in that: The V-shaped upper clamp (4) is formed by the intersection of a first arc edge (43) and two first inclined edges (42), and the intersection of the two first inclined edges (42) is located on the central axis of the hydraulic chuck (2).

4. The combined tooling for quick clamping of a hydraulic chuck according to claim 1, characterized in that: The V-shaped upper clamp (4) is provided with four first threaded holes (44).

5. A combination tooling for quick clamping of a hydraulic chuck according to claim 1, characterized in that: The V-shaped lower clamp (5) is formed by the intersection of the second arc edge (53) and two second inclined edges (52), and the intersection of the two second inclined edges (52) is located on the central axis of the hydraulic chuck (2).

6. A combination tooling for quick clamping of a hydraulic chuck according to claim 4, characterized in that: The V-shaped lower clamp (5) is provided with four second threaded holes (55) corresponding to the positions of the four first threaded holes (44).

7. A machining method for a combination tooling for quick clamping of a hydraulic chuck, characterized in that: A combined tooling for quick clamping of a hydraulic chuck, as described in any one of claims 1 to 6, comprises the following steps: Step 1: The fixture is made of cemented carbide, and the machining method is positive wire electrical discharge machining and external flushing liquid cooling. Step 2: Set the processing parameters: processing current 3-5A, pulse width 30-50μs, duty cycle 1:5-1:7; Step 3: Based on the processing method used in Step 1 and the processing parameters set in Step 2, process the V-shaped upper clamp (4) and V-shaped lower clamp (5) from the cemented carbide material used in Step 1, install the V-shaped upper clamp (4) on the hydraulic chuck (2), and then install the V-shaped lower clamp (5) on the V-shaped upper clamp (4). Step 4: Make a positioning strip (6) using alloy steel, and make a scale line (61) on the surface of the positioning strip (6) by laser engraving, with the lower end as the starting point and the scale being zero; Step 5: Install the positioning strip (6) in the moving groove (54). Calculate the movement value L using the theoretical overall length formula: L=R1+R2+h1. After moving the positioning strip (6) a specific distance, fix the positioning strip (6) with screws at the position of the limiting hole (51).

Images