Polishing clamp and clamping method for joint line of casting part

Abstract

The invention provides a casting part joint line polishing clamp and a clamping method, and belongs to the technical field of casting part production tools. According to the grinding clamp and the design of the clamping method, the problems that in the prior art, when a clamp is used for clamping, generated tiny dislocation is difficult to observe, clamping is not firm, the production quality of casting parts is unqualified, and even production safety accidents are caused are solved. Compared with the prior art, the polishing clamp for the joint line of the casting part is characterized by comprising a position correction assembly, a correction section is selected in the middle of the casting part, and the position correction assembly is used for correcting the position of the correction section; the position correction assembly comprises a correction power part, a first correction part and a second correction part; the first correction part and the second correction part are oppositely arranged, and the shapes of the opposite surfaces of the first correction part and the second correction part are matched with the shape of the correction section; the correction power part drives the first correction part and the second correction part to be close to each other or away from each other; and the position sensing assembly is used for detecting the distance from the casting part.

Description

Technical Field

[0001] The invention belongs to the technical field of tooling for casting production, and in particular relates to a grinding fixture for a seam line of a casting and a clamping method. Background Art

[0002] The seam line of a casting is an inevitable phenomenon in the casting process. In order to ensure the appearance quality of the casting, eliminate stress concentration, ensure the assembly dimensional accuracy of the casting, and facilitate subsequent processing, a grinding wheel is required to grind the seam line of the casting during the production process of the casting.

[0003] like Figure 3 For the axially longer casting shown in the figure, when using a grinding wheel to grind its seam line, it is necessary to drive the casting to rotate about its center line; the grinding wheel is driven by the grinding equipment to enter between the two discs of the casting and rotate; as the grinding surface of the grinding wheel and the seam line surface on the disc of the casting gradually approach each other, the grinding wheel and the casting rotate relative to each other, and the abrasive on the grinding surface of the grinding wheel and the seam line surface on the disc of the casting generate friction, thereby grinding away the seam line.

[0004] In the above production process, the clamp used in the prior art is used to clamp the Figure 3 As for the casting shown in the figure, due to the special shape of the casting and the long axial length, when clamping the casting, the clamping of the prior art is prone to slight misalignment, and the slight misalignment is difficult to observe, which results in unreliable clamping. Once this happens, when the casting rotates and the grinding wheel grinds the seam line of the casting, the production quality of the casting may be unqualified at best. In severe cases, during the grinding process, the casting may become loose further due to insufficient clamping, causing a production safety accident. Summary of the invention

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a grinding fixture and clamping method for the seam line of a casting, which is used to solve the problem that the fixture in the prior art is prone to slight misalignment when clamping the casting as shown in the figure, and the slight misalignment is difficult to observe, which causes the clamping to be unreliable; thus, it leads to unqualified production quality of the casting and even causes production safety accidents.

[0006] In order to achieve the above-mentioned object and other related objects, the present invention provides a grinding fixture for the seam line of a casting, comprising:

[0007] Pedestal;

[0008] An active clamping assembly is rotatably mounted on the base and clamps the left end of the casting;

[0009] An active rotating power assembly drives the active clamping assembly to rotate;

[0010] A driven clamping assembly is rotatably mounted on the base and clamps the right end of the casting;

[0011] Also includes:

[0012] A position correction component, wherein a correction section is selected in the middle of the casting, and the position correction component corrects the position of the correction section;

[0013] The position correction assembly includes a correction power unit, a first correction unit, and a second correction unit;

[0014] The first correction part and the second correction part are arranged opposite to each other, and the shapes of the opposite surfaces of the first correction part and the second correction part are adapted to the shape of the correction section;

[0015] The correction power unit drives the first correction unit and the second correction unit to move closer to or farther from each other;

[0016] Position sensing components detect the distance to the casting.

[0017] Optionally, the correction power unit is slidably mounted on the base, with the sliding direction being along the axial direction of the casting, and drives the first correction unit and the second correction unit to slide synchronously.

[0018] Optionally, the correction power unit includes a first correction power member and a second correction power member;

[0019] The first correction power member drives the first correction part to move up and down, and the second correction power member drives the second correction part to move up and down;

[0020] The first correction power member and the second correction power member are both slidably mounted on the base, and the sliding directions of both are along the axial direction of the casting, and they respectively drive the first correction part and the second correction part to move synchronously.

[0021] Optionally, the active clamping assembly includes an active clamping power unit, a first clamping unit and a second clamping unit; the first clamping unit and the second clamping unit are arranged opposite to each other, and the active clamping power unit drives the two to move closer to or away from each other;

[0022] The shapes of the opposing surfaces of the first clamping portion and the second clamping portion match the shape of the left end of the casting;

[0023] The driven clamping assembly comprises a driven clamping power unit, a third clamping unit and a fourth clamping unit; the third clamping unit and the fourth clamping unit are arranged opposite to each other, and the driven clamping power unit drives the third clamping unit and the fourth clamping unit to move closer to or farther from each other;

[0024] The shapes of the facing surfaces of the third clamping portion and the fourth clamping portion match the shape of the right end of the casting.

[0025] Optionally, a driven rotating power assembly is also included;

[0026] When the driven clamping assembly clamps the right end of the casting, the driven rotating power assembly and the driven clamping assembly are disconnected;

[0027] When the driven clamping assembly releases the right end of the casting, the driven rotating power assembly is connected to the driven clamping assembly.

[0028] Optionally, the position sensing component includes a distance sensor and a sensor bracket;

[0029] The sensor bracket is fixedly mounted on the base, and the distance sensor is mounted on the sensor bracket;

[0030] The distance sensor is provided with a detection probe for detecting the distance between the distance sensor and the casting.

[0031] The clamping method of the grinding fixture for the seam line of a casting as described above comprises the following steps:

[0032] S1: the active clamping assembly clamps the left end of the casting, and the passive clamping assembly clamps the right end of the casting;

[0033] S2: the correction power unit drives the first correction unit and the second correction unit to approach each other, clamping the correction section until the opposite surfaces of the first correction unit and the second correction unit are in contact with the correction section;

[0034] S3: the correction power unit drives the first correction unit and the second correction unit to move away from each other;

[0035] S4: The position sensing component detects the distance between it and the casting; when the distance does not match the set value, the position of the casting continues to be corrected; when the distance matches the set value, the fixture proceeds to the next step;

[0036] S5: The active rotating power component drives the active clamping component to rotate.

[0037] As described above, the grinding fixture and clamping method for the seam line of a casting of the present invention have at least the following beneficial effects:

[0038] 1. The grinding fixture for the seam line of the casting is adapted to the shape of the opposite surfaces of the first correction part and the second correction part and the shape of the correction section, the correction power part drives the first correction part and the second correction part to move closer to or farther from each other, and the position sensing component detects the distance from the casting. After the casting is installed on the base, the active clamping component and the driven clamping component clamp the left end and the right end of the casting respectively, and then the position correction component adjusts the position of the correction section to achieve the purpose of correcting the position of the entire casting (the correction section is selected by the designer on the casting according to the actual situation, and there is no need to design the casting specifically); compared with the fixture used in the prior art, the clamping Figure 3 When the axial length of the casting is long and the shape is special, the slight misalignment of the casting can be adjusted in time, and the corrected casting is detected by the position sensing component at the same time to detect the distance between the casting and it. When the detection result does not meet the set value, the clamp is controlled not to perform the grinding operation. This solves the problem in the prior art that the slight misalignment generated by the clamp during clamping is difficult to observe, resulting in unreliable clamping, which in turn leads to unqualified production quality of the casting and even causes production safety accidents.

[0039] 2. The clamping method of the grinding fixture for the seam line of the casting can timely adjust the slight misalignment of the casting with a long axial length when it is clamped, and can detect the slight misalignment, thereby cutting off the grinding operation, thereby avoiding the problem in the prior art that the slight misalignment generated by the clamp during clamping is difficult to observe, resulting in unreliable clamping, and further leading to unqualified production quality of the casting, and even causing production safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of a grinding fixture for a seam line of a casting according to the present invention is shown.

[0041] Figure 2 A schematic diagram showing the components of a grinding fixture for a seam line of a casting according to the present invention is shown.

[0042] Figure 3 A schematic diagram showing a casting clamped by a grinding fixture for grinding the seam line of a casting according to the present invention is shown.

[0043] Figure 4 A schematic diagram showing a grinding device for installing a grinding fixture for a seam line of a casting according to the present invention.

[0044] Figure 5 The flowchart is a step chart of a method for clamping a grinding fixture for a seam line of a casting according to the present invention.

[0045] Component number description

[0046] Grinding wheel 1, grinding equipment 2;

[0047] Casting 3, joint line 31, correction section 32;

[0048] Grinding fixture 4, base 41;

[0049] Active clamping assembly 42, first clamping portion 421, second clamping portion 422, active clamping power portion 423;

[0050] Active rotating power assembly 43;

[0051] A driven clamping assembly 44, a third clamping portion 441, a fourth clamping portion 442, and a driven clamping power portion 443;

[0052] Position correction component 45, first correction part 451, second correction part 452;

[0053] Correction power unit 453, first correction power member 4531, second correction power member 4532;

[0054] Position sensing component 46, distance sensor 461, sensor bracket 462;

[0055] Driven rotating power component 47. DETAILED DESCRIPTION

[0056] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0057] See also Figures 1 to 5 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0058] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0059] See also Figure 4The present invention provides a grinding fixture for the seam line of a casting, which is used for grinding Figure 3 The seam line 31 of the casting 3 with a longer axial length is shown. The grinding fixture 4 is just like a common fixture, which includes:

[0060] like Figure 1 The base 41 shown is used to install various components.

[0061] like Figure 1 The active clamping assembly 42 shown is rotatably mounted on the base 41 and is used to clamp the left end of the casting 3.

[0062] like Figure 1 The active rotating power assembly 43 is used to drive the active clamping assembly 42 to rotate, thereby driving the casting 3 to rotate, so as to achieve the grinding operation of the seam line 31.

[0063] like Figure 1 The driven clamping assembly 44 shown is rotatably mounted on the base 41 to clamp the right end of the casting 3. When the active rotating power assembly 43 drives the active clamping assembly 42 to rotate and further drives the casting 3 to rotate, the driven clamping assembly 44 fully ensures the stability of the rotation of the casting 3.

[0064] The difference between this clamp and the prior art is that it also includes:

[0065] like Figure 1 and Figure 2 In order to cooperate with the use of the position correction component 45, we need to select a section in the middle of the casting 3 as the correction section 32. The correction section 32 is selected by the designer on the casting 3 according to the actual situation, and there is no need to specially design the casting 3. For example, Figure 3 A hexagonal section in the middle of the casting 3 is shown as the correction section 32 ; the position correction component 45 corrects the position of the correction section 32 , thereby achieving the purpose of correcting the slight misalignment of the entire casting 3 .

[0066] In order to achieve the above correction purpose, Figure 1 and Figure 2 As shown, the position correction component 45 includes a correction power unit 453, a first correction unit 451 and a second correction unit 452; the first correction unit 451 and the second correction unit 452 are arranged opposite to each other, and the shapes of the opposite surfaces of the two are adapted to the shape of the correction section 32, for example, Figure 3The correction power part 453 drives the first correction part 451 and the second correction part 452 to move closer to or away from each other; when the first correction part 451 and the second correction part 452 move closer to each other, they clamp the correction section 32, thereby correcting the position of the entire casting 3. Figure 3 When the casting 3 has a long axial length and a special shape, the grinding fixture 4 can make timely adjustments to the slight misalignment of the casting 3 .

[0067] Then through Figure 1 and Figure 2 The position sensing assembly 46 shown detects the distance from the casting 3, and controls the clamp not to perform the grinding operation when the detection result does not meet the set value. This solves the problem in the prior art that the slight misalignment generated by the clamp during clamping is difficult to observe, resulting in unreliable clamping, which in turn leads to unqualified production quality of the casting 3 and even causes production safety accidents.

[0068] In another embodiment, see Figure 1 and Figure 2 The correction power part 453 is slidably installed on the base 41, and the sliding direction is along the axial direction of the casting 3, and drives the first correction part 451 and the second correction part 452 to slide synchronously; the design of this embodiment, when clamping castings 3 with different shapes, if the middle parts of different castings 3 have the same shape but slightly different positions, the operator can drive the correction power part 453 to slide, thereby driving the first correction part 451 and the second correction part 452 to slide, so that the grinding fixture 4 can clamp two different castings 3 without replacing the first correction part 451 and the second correction part 452, thereby enhancing the applicability of the grinding fixture 4.

[0069] In another embodiment, see Figure 1 and Figure 2, the correction power unit 453 includes a first correction power member 4531 and a second correction power member 4532; the first correction power member 4531 drives the first correction unit 451 to move up and down, and the second correction power member 4532 drives the second correction unit 452 to move up and down; the first correction power member 4531 and the second correction power member 4532 are both slidably installed on the base 41 (the sliding installation of the second power member is not marked in the figure, and the specific sliding structure can be designed by the designer according to the needs, which will not be repeated here), and the sliding directions of both are along the axial direction of the casting 3, and respectively drive the first correction unit 451 and the second correction unit 452 to move synchronously; this embodiment provides a specific structural form of the correction power unit 453, and the first correction power member 4531 and the second correction power member 4532 can both use cylinders; the first correction unit 451 and the second correction unit 452 are respectively driven by the first correction power member 4531 and the second correction power member 4532, which are more reliable than being driven by one power member at the same time.

[0070] In another embodiment, see Figure 1 and Figure 2 The active clamping assembly 42 includes an active clamping power unit 423, a first clamping unit 421 and a second clamping unit 422; the first clamping unit 421 and the second clamping unit 422 are arranged opposite to each other, and the active clamping power unit 423 drives the two to move closer to or farther away from each other; the shape of the opposite surfaces of the first clamping unit 421 and the second clamping unit 422 is adapted to the shape of the left end of the casting 3; when the first clamping unit 421 and the second clamping unit 422 are close to each other, the two clamp the left end of the casting 3, and when the first clamping unit 421 and the second clamping unit 422 are away from each other, the two release the left end of the casting 3, and the first clamping unit 421 and the second clamping unit 422 can timely and flexibly adjust the clamping state of the left end of the casting 3 according to the calibration result.

[0071] like Figure 2 As shown, the driven clamping assembly 44 includes a driven clamping power part 443, a third clamping part 441 and a fourth clamping part 442; the third clamping part 441 and the fourth clamping part 442 are arranged opposite to each other, and the driven clamping power part 443 drives the two to move closer to or away from each other; the shape of the opposite surfaces of the third clamping part 441 and the fourth clamping part 442 is adapted to the shape of the right end of the casting 3; when the third clamping part 441 and the fourth clamping part 442 are close to each other, the two clamp the right end of the casting 3, and when the third clamping part 441 and the fourth clamping part 442 are away from each other, the two release the right end of the casting 3, and the third clamping part 441 and the fourth clamping part 442 can timely and flexibly adjust the clamping state of the right end of the casting 3 according to the calibration result.

[0072] The structural design of the active clamping assembly 42 and the driven clamping assembly 44 ensures that the grinding fixture 4 can timely adjust the clamping state of the casting 3 according to the correction result of the position correction assembly 45 .

[0073] In another embodiment, see Figure 1 The present grinding process further includes a driven rotating power component 47 .

[0074] like Figure 1 As shown, when the driven clamping assembly 44 clamps the right end of the casting 3, the driven rotating power assembly 47 and the driven clamping assembly 44 are disconnected, so that the driven clamping assembly 44 can rotate with the rotation of the casting 3.

[0075] like Figure 1 and Figure 4 As shown, when the driven clamping assembly 44 releases the right end of the casting 3, the driven rotating power assembly 47 is connected to the driven clamping assembly 44 to prevent the driven clamping assembly 44 from rotating at will and causing damage to the grinding equipment 2; at the same time, the driven rotating power assembly 47 can also adjust the position of the driven clamping assembly 44, which is more labor-saving than manual adjustment by the operator.

[0076] In other embodiments, Figure 2 As shown, the position sensing component 46 includes a distance sensor 461 and a sensor bracket 462; the sensor bracket 462 is fixedly mounted on the base 41, and the distance sensor 461 is mounted on the sensor bracket 462; the distance sensor 461 is provided with a detection probe to detect the distance between it and the casting 3; the sensor bracket 462 ensures the fixation of the position of the distance sensor 461, thereby ensuring the accuracy of the detection result of the distance sensor 461.

[0077] See also Figures 1 to 5 , based on the above-mentioned method for clamping a grinding fixture for a casting seam line, the method comprises the following steps:

[0078] S1: The active clamping power unit 423 drives the first clamping unit 421 and the second clamping unit 422 to clamp the left end of the casting 3, and the opposite surfaces of the first clamping unit 421 and the second clamping unit 422 are in contact with the left end of the casting 3; the passive clamping power unit 443 drives the third clamping unit 441 and the fourth clamping unit 442 to clamp the right end of the casting 3, and the opposite surfaces of the third clamping unit 441 and the fourth clamping unit 442 are in contact with the right end of the casting 3;

[0079] S2: The correction power unit 453 drives the first correction unit 451 and the second correction unit 452 to approach each other, clamping the correction section 32 until the opposite surfaces of the first correction unit 451 and the second correction unit 452 are in contact with the correction section 32; this process is very fast and will not affect the normal production rhythm of the grinding fixture 4;

[0080] S3: When the first correction part 451 and the second correction part 452 complete the correction of the correction section 32, that is, the casting 3, the correction power part 453 drives the first correction part 451 and the second correction part 452 to move away from each other;

[0081] S4: The position sensing component 46 detects the distance between it and the casting 3 through the detection probe of the distance sensor 461; when the distance does not match the set value, the correction section 32, that is, the position of the casting 3, can be further corrected through the first correction part 451 and the second correction part 452; the casting 3 can also be repositioned according to actual conditions, such as large position misalignment, using lifting tools such as electric hoists; when the detected distance matches the set value, the grinding fixture 4 proceeds to the next step;

[0082] S5: The active rotating power assembly 43 drives the active clamping assembly 42 to rotate, and the grinding wheel 1 gradually enters between the two "cams" in the middle of the casting 3 while rotating, and grinds the seam line 31 thereon.

[0083] The clamping method of the grinding fixture for the seam line of the casting is based on the step design of the grinding fixture 4 for the seam line 31 of the casting 3 in the previous text. It can timely adjust the casting 3 with a long axial length and produce slight misalignment when it is clamped. It can also detect the slight misalignment and thus cut off the grinding operation, thereby avoiding the problem in the prior art that the slight misalignment produced by the clamp during clamping is difficult to observe, resulting in unreliable clamping, and further leading to unqualified production quality of the casting 3, and even causing production safety accidents.

[0084] In summary, in the present invention, a grinding fixture for the seam line of a casting is adapted to the shape of the opposite surfaces of the first correction part 451 and the second correction part 452 and the shape of the correction section 32, the correction power part 453 drives the first correction part 451 and the second correction part 452 to move closer to or farther from each other, and the position sensing component 46 detects the distance from the casting 3. After the casting 3 is installed on the base 41, the active clamping component 42 and the driven clamping component 44 clamp the left and right ends of the casting 3 respectively, and then the position correction component 45 adjusts the position of the correction section 32 to achieve the purpose of correcting the position of the entire casting 3 (the correction section 32 is selected by the designer on the casting 3 according to the actual situation, and there is no need to specially design the casting 3); compared with the fixture used in the prior art, the clamping such as Figure 3 When the casting 3 with a long axial length and a special shape is shown, the slight misalignment of the casting 3 can be adjusted in time, and the corrected casting 3 is detected by the position sensing component 46, and the distance between the casting 3 and it is detected. When the detection result does not meet the set value, the clamp is controlled not to perform the grinding operation; in addition, the clamping method of the grinding clamp of the seam line of the casting of the present invention, through the step design of the grinding clamp 4 based on the seam line 31 of the casting 3, the casting 3 with a long axial length can be adjusted in time, and the slight misalignment can be detected, so as to cut off the grinding operation; thus avoiding the problem that the slight misalignment generated by the clamp in the prior art is difficult to observe when clamping, resulting in unreliable clamping, and then leading to unqualified production quality of the casting 3, and even causing production safety accidents. Therefore, the present invention effectively overcomes the shortcomings of the prior art and has a high industrial utilization value.

[0085] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A grinding fixture for a seam line of a casting, comprising: Pedestal; An active clamping assembly is rotatably mounted on the base and clamps the left end of the casting; An active rotating power assembly drives the active clamping assembly to rotate; A driven clamping assembly is rotatably mounted on the base and clamps the right end of the casting; It is characterized by further comprising: A position correction component, wherein a correction section is selected in the middle of the casting, and the position correction component corrects the position of the correction section; The position correction assembly includes a correction power unit, a first correction unit, and a second correction unit; The first correction part and the second correction part are arranged opposite to each other, and the shapes of the opposite surfaces of the first correction part and the second correction part are adapted to the shape of the correction section; The correction power unit drives the first correction unit and the second correction unit to move closer to or farther from each other; Position sensing components detect the distance to the casting.

2. A grinding fixture for the seam line of a casting according to claim 1, characterized in that: The correction power unit is slidably mounted on the base, with a sliding direction along the axial direction of the casting, and drives the first correction unit and the second correction unit to slide synchronously.

3. A grinding fixture for the seam line of a casting according to claim 1, characterized in that: The correction power unit includes a first correction power member and a second correction power member; The first correction power member drives the first correction part to move up and down, and the second correction power member drives the second correction part to move up and down; The first correction power member and the second correction power member are both slidably mounted on the base, and the sliding directions of both are along the axial direction of the casting, and they respectively drive the first correction part and the second correction part to move synchronously.

4. A grinding fixture for the seam line of a casting according to claim 1, characterized in that: The active clamping assembly comprises an active clamping power unit, a first clamping unit and a second clamping unit; the first clamping unit and the second clamping unit are arranged opposite to each other, and the active clamping power unit drives the two to move closer to or away from each other; The shapes of the facing surfaces of the first clamping portion and the second clamping portion match the shape of the left end of the casting; The driven clamping assembly comprises a driven clamping power unit, a third clamping unit and a fourth clamping unit; the third clamping unit and the fourth clamping unit are arranged opposite to each other, and the driven clamping power unit drives the third clamping unit and the fourth clamping unit to move closer to or farther from each other; The shapes of the facing surfaces of the third clamping portion and the fourth clamping portion match the shape of the right end of the casting.

5. The grinding fixture for the seam line of a casting according to claim 1, characterized in that: Also included is a driven rotating power assembly; When the driven clamping assembly clamps the right end of the casting, the driven rotating power assembly and the driven clamping assembly are disconnected; When the driven clamping assembly releases the right end of the casting, the driven rotating power assembly is connected to the driven clamping assembly.

6. A grinding fixture for the seam line of a casting according to claim 1, characterized in that: The position sensing component includes a distance sensor and a sensor bracket; The sensor bracket is fixedly mounted on the base, and the distance sensor is mounted on the sensor bracket; The distance sensor is provided with a detection probe for detecting the distance between the distance sensor and the casting.

7. A method for clamping a grinding fixture for a seam line of a casting according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: the active clamping assembly clamps the left end of the casting, and the passive clamping assembly clamps the right end of the casting; S2: the correction power unit drives the first correction unit and the second correction unit to approach each other, clamping the correction section until the opposite surfaces of the first correction unit and the second correction unit are in contact with the correction section; S3: the correction power unit drives the first correction unit and the second correction unit to move away from each other; S4: The position sensing component detects the distance between it and the casting; when the distance does not match the set value, the position of the casting continues to be corrected; when the distance matches the set value, the fixture proceeds to the next step; S5: The active rotating power component drives the active clamping component to rotate.

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