A press frame precision detection device and detection method

Abstract

The present application provides a kind of press frame precision detection device and detection method, press frame precision detection device includes gauge a, gauge b, gauge c, gauge d, gauge e and dial gauge detection device;Dial gauge detection device includes the dial gauge, universal table rod and magnetic table seat used in conjunction;One or more of gauge a, gauge b, gauge c, gauge d, gauge e cooperate with dial gauge detection device, detect the perpendicularity, parallelism and concentricity of outer mold plate relative to female mold plate, detect the perpendicularity and parallelism of floating mold plate relative to female mold plate, detect the perpendicularity, parallelism and concentricity of core rod relative to female mold plate.The present application develops a kind of press frame precision detection device and detection method, designs various gauges and the method of independent or mutual cooperation detection frame precision between each gauge, to systematically detect the perpendicularity, parallelism, concentricity etc. between each mold plate in frame, with the characteristics such as detection efficient, simple.

Description

Technical Field

[0001] This invention relates to the field of metal forming technology, and more specifically to a device and method for detecting the accuracy of a press mold frame. Background Technology

[0002] The press mold set contains multiple layers of templates for mounting multi-layer molds to meet the forming requirements of various shoulder positions in powder metallurgy parts. Due to the complexity of the mold set structure, its precision directly affects the mold installation precision, and consequently, the forming quality of the parts. Currently, due to limitations in mold set structure and space, the relative precision testing between templates is difficult, inefficient, and difficult to adjust. Furthermore, the precision of each template layer can affect each other, further increasing the difficulty of mold set installation and debugging. Summary of the Invention

[0003] This invention provides a device and method for detecting the accuracy of a press mold frame, which solves the problems of high difficulty and low efficiency in detecting the relative accuracy between mold frames in the prior art.

[0004] This invention provides a precision testing device for a press mold frame, the press mold frame including a female mold plate, an outer mold plate, a floating mold plate, and a core rod. The testing device includes gauges a, b, c, d, and e, and a dial indicator testing device; the dial indicator testing device includes a dial indicator, a universal joint rod, and a magnetic base for coordinated use.

[0005] One or more of the following fixtures, namely fixture a, fixture b, fixture c, fixture d, and fixture e, cooperate with the dial indicator testing device to detect the perpendicularity, parallelism, and concentricity of the outer template relative to the female template, the perpendicularity and parallelism of the floating template relative to the female template, and the perpendicularity, parallelism, and concentricity of the core rod relative to the female template.

[0006] Optionally, the press mold frame accuracy detection device includes:

[0007] The inspection fixture a includes a lower positioning surface, an upper positioning surface, an upper outer circular mating surface, and a lower outer circular mating surface; the lower positioning surface is perpendicular to the lower outer circular mating surface, and the lower outer circular mating surface is parallel to the upper positioning surface; the lower outer circular mating surface is concentric with the upper outer circular mating surface; the lower outer circular mating surface is precisely fitted with the inner hole mating surface of the outer template.

[0008] The inspection tool b includes a lower end face, an upper end face, an inner hole mating surface, and an outer circular surface; the upper end face is parallel to the lower end face; the lower end face is perpendicular to the inner hole mating surface; the inner hole mating surface and the outer circular surface are concentric; the dimensions of the inner hole mating surface and the upper outer circular surface are precisely fitted.

[0009] The inspection tool c includes a lower end face c and a side face c, wherein the lower end face c is perpendicular to the side face c;

[0010] The inspection fixture d includes a lower end face d, an upper end face d, an inner hole mating surface d, and an outer circular surface d; the lower end face d is parallel to the upper end face d, and the lower end face d is perpendicular to the inner hole mating surface d; the inner hole mating surface d and the outer circular mating surface of the core rod are precisely fitted; the outer circular surface d and the inner hole mating surface of the outer template are precisely fitted.

[0011] The inspection fixture e includes an outer circular surface and two parallel lower and upper end surfaces; the outer circular surface of e is precisely fitted with the inner mating surface of the floating template.

[0012] This invention also provides a method for detecting the accuracy of a press mold frame, wherein the press mold frame includes a female mold plate, an outer mold plate, a floating mold plate, and a core rod, and the method employs the press mold frame accuracy detection device of this invention. The method includes the following steps:

[0013] Prepare inspection fixtures a, b, c, d, and e, as well as a dial indicator testing device; the dial indicator testing device includes a dial indicator, a universal joint rod, and a magnetic base for use.

[0014] The perpendicularity of the outer template relative to the female template is detected using the gauge a, gauge b, gauge c and the dial indicator testing device.

[0015] The parallelism of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator testing device.

[0016] The concentricity of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator detection device.

[0017] The perpendicularity of the floating template relative to the female template is detected using the gauge c, the gauge d, and the dial indicator.

[0018] The parallelism of the floating template relative to the female template is detected using the gauge d and the dial indicator.

[0019] The perpendicularity of the core rod relative to the female template is detected using the gauge c, the gauge e, and the dial indicator testing device.

[0020] The parallelism of the core rod relative to the female template is detected using the gauge e and the dial indicator testing device.

[0021] The concentricity of the core rod relative to the female template is detected using the gauge d and the dial indicator.

[0022] Optionally, the perpendicularity of the outer template relative to the female template is detected using the inspection fixtures a, b, and c, specifically including the following steps:

[0023] Fix the inspection tool c to the upper end face of the female template, fix the inspection tool a to the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end face of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0024] The gauge b is fitted onto the gauge a, such that the upper positioning surface of gauge a is in contact with the lower surface of gauge b, and the outer circle mating surface of the upper end of gauge a is precisely in contact with the inner hole mating surface of gauge b.

[0025] Fix the magnetic base to the upper end face of the b of the fixture b, and fix the dial indicator to the universal rod. After the pointer of the dial indicator is in vertical contact with the c side of the fixture c, adjust the dial indicator to zero.

[0026] The outer template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the outer template is determined to be the perpendicularity of the outer template relative to the female template.

[0027] Optionally, the parallelism of the outer template relative to the female template is detected using the inspection fixture a, the inspection fixture b, and the dial indicator detection device, specifically including the following steps:

[0028] Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0029] The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b.

[0030] Fix the magnetic base to the upper end face of the gauge b, and fix the dial indicator to the universal rod. After the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0031] Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture a at least one revolution;

[0032] During the rotation process, the maximum reading of the dial gauge is determined to be the parallelism of the outer template relative to the female template.

[0033] Optionally, the concentricity of the outer template relative to the female template is detected using the inspection fixture a, the inspection fixture b, and the dial indicator detection device, specifically including the following steps:

[0034] Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0035] The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b.

[0036] The magnetic base is fixed to the outer circular surface of the gauge b, and the dial indicator is fixed to the universal rod. After the dial indicator needle is in vertical contact with the inner hole mating surface of the female template, the dial indicator is adjusted to zero.

[0037] Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture at least one revolution;

[0038] It is determined that during the rotation process, half of the maximum reading of the dial gauge represents the concentricity of the outer template relative to the female template.

[0039] Optionally, the perpendicularity of the floating template relative to the female template is detected using the inspection fixture c, the inspection fixture d, and the dial indicator, specifically including the following steps:

[0040] Fix the gauge c to the upper end face of the female template, and fix the gauge d to the upper end face of the floating template;

[0041] Fix the magnetic base to the upper end face of the d of the fixture d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the c of the fixture c, adjust the dial indicator to zero.

[0042] The floating template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the floating template is determined to be the perpendicularity of the floating template relative to the female template.

[0043] Optionally, the parallelism of the floating template relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps:

[0044] The gauge d is fixed to the upper end face of the floating template;

[0045] Fix the magnetic base to the upper end face of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0046] While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution;

[0047] During the rotation of the fixture d, the maximum reading of the dial indicator is determined to be the parallelism of the floating template relative to the female template.

[0048] Optionally, the perpendicularity of the core rod relative to the female template is detected using the inspection fixture c, the inspection fixture e, and the dial indicator testing device, specifically including the following steps:

[0049] Fix the gauge c to the upper end face of the female template, and fix the gauge e to the upper end face of the core rod;

[0050] Fix the magnetic base to the upper end face of the inspection fixture e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the inspection fixture c, adjust the dial indicator to zero.

[0051] The core rod is moved vertically upward, and the maximum reading of the dial indicator during the upward movement of the core rod is determined to be the perpendicularity of the core rod relative to the female template.

[0052] Optionally, the parallelism of the core rod relative to the female template is detected using the gauge e and the dial indicator; the concentricity of the core rod relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps:

[0053] Fix the gauge e to the upper end face of the core rod;

[0054] Fix the magnetic base to the upper end face of the gauge e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0055] While keeping the lower end face of the gauge e in contact with the upper end face of the core rod, rotate the gauge e at least one revolution;

[0056] During the rotation of the fixture e, the maximum reading of the dial indicator is determined to be the parallelism of the core rod relative to the female template.

[0057] The gauge is fitted onto the core rod, and the lower end face of the gauge d is made to fit against the upper end face of the floating template;

[0058] Fix the magnetic base to the outer circle mating surface of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in perpendicular contact with the inner hole mating surface of the female template, adjust the dial indicator to zero.

[0059] While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution;

[0060] During the rotation of the fixture d, half of the maximum reading of the dial indicator is determined to be the concentricity of the core rod relative to the female template.

[0061] The embodiments of the present invention have at least the following beneficial effects:

[0062] This invention develops a device and method for detecting the accuracy of a press mold frame. It designs various gauges, and uses one or more of these gauges in conjunction with a dial indicator to detect the accuracy of the mold frame. This method systematically detects the perpendicularity, parallelism, concentricity, etc., between the templates in the mold frame, and features high efficiency and simplicity in detection. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 This is a schematic diagram of the template in the press mold frame provided in an embodiment of the present invention;

[0065] Figure 2 This is a schematic diagram of the inspection fixture a provided in an embodiment of the present invention;

[0066] Figure 3 This is a schematic diagram of the inspection fixture b provided in an embodiment of the present invention;

[0067] Figure 4 This is a schematic diagram of the inspection fixture c provided in an embodiment of the present invention;

[0068] Figure 5This is a schematic diagram of the inspection fixture d provided in an embodiment of the present invention;

[0069] Figure 6 This is a schematic diagram of the inspection fixture e provided in an embodiment of the present invention;

[0070] Figure 7 This is a schematic diagram illustrating the perpendicularity detection of the outer template relative to the female template provided in an embodiment of the present invention.

[0071] Figure 8 This is a schematic diagram illustrating the parallelism detection of the outer template relative to the female template provided in an embodiment of the present invention.

[0072] Figure 9 This is a schematic diagram illustrating the concentricity detection of the outer template relative to the female template provided in an embodiment of the present invention.

[0073] Figure 10 This is a schematic diagram illustrating the concentricity detection principle of the outer template relative to the female template provided in an embodiment of the present invention.

[0074] Figure 11 This is a schematic diagram illustrating the perpendicularity detection of the floating template relative to the female template provided in an embodiment of the present invention.

[0075] Figure 12 This is a schematic diagram illustrating the parallelism detection of the floating template relative to the female template provided in an embodiment of the present invention.

[0076] Figure 13 This is a schematic diagram illustrating the perpendicularity detection of the core rod relative to the female template provided in an embodiment of the present invention.

[0077] Figure 14 This is a schematic diagram illustrating the parallelism detection of the core rod relative to the female template provided in an embodiment of the present invention.

[0078] Figure 15 This is a schematic diagram illustrating the concentricity detection of the core rod relative to the female template provided in an embodiment of the present invention.

[0079] Figure label:

[0080] 1-Female template; 1-1-Upper end face of the female template; 1-2-Stop end face of the female template; 1-3-Inner hole mating surface of the female template; 2-Outer template; 2-1-Upper end face of the outer template; 2-2-Inner hole mating surface of the outer template; 3-Floating template; 3-1-Upper end face of the floating template; 3-2-Inner hole mating surface of the floating template; 4-Core rod; 4-1-Upper end face of the core rod; 4-2-Outer circle mating surface of the core rod; 5-Inspection fixture a; 5-1-a Lower end positioning surface; 5-2-a Lower end outer circle mating surface; 5-3-a Upper end positioning surface ; 5-4-a Upper outer circular mating surface; 6-Inspector b; 6-1-b Lower end face; 6-2-b Upper end face; 6-3-b Inner hole mating surface; 6-4-b Outer circular surface; 7-Inspector c; 7-1-c Lower end face; 7-2-c Side face; 8-Inspector d; 8-1-d Lower end face; 8-2-d Upper end face; 8-3-d Inner hole mating surface; 8-4-d Outer circular surface; 9-Inspector e; 9-1-e Lower end face; 9-2-e Upper end face; 9-3-e Outer circular surface; 10-Dial indicator; 11-Universal indicator rod; 12-Magnetic indicator base. Detailed Implementation

[0081] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0082] like Figure 1 As shown, the press mold frame includes a female mold plate 1, an outer mold plate 2, a floating mold plate 3, and a core rod 4. The detection device includes gauges a5, b6, c7, d8, and e9, and a dial indicator detection device. The dial indicator detection device includes a dial indicator 10, a universal gauge rod 11, and a magnetic gauge base 12 for use in conjunction with the press.

[0083] One or more of the following fixtures, namely a5, b6, c7, d8, and e9, cooperate with the dial indicator testing device to detect the perpendicularity, parallelism, and concentricity of the outer template 2 relative to the female template 1, the perpendicularity and parallelism of the floating template 3 relative to the female template 1, and the perpendicularity, parallelism, and concentricity of the core rod 4 relative to the female template 1.

[0084] Specifically, the press mold frame mainly includes a female mold plate 1, an outer mold plate 2, a floating mold plate 3, and a core rod 4, etc., with a layer of mold installed on each mold plate. The molds are installed at the stop end face 1-2 of the female mold plate, the inner hole mating surface 1-3 of the female mold plate, the upper end face 2-1 of the outer mold plate, the inner hole mating surface 2-2 of the outer mold plate, the upper end face 3-1 of the floating mold plate, and the upper end face 4-1 of the core rod, etc. Therefore, it is necessary to check the relative accuracy at these mounting surfaces. Since the female mold plate 1 is fixed, it is generally used as the reference to check the accuracy of other mold plates relative to the female mold plate 1.

[0085] The dial indicator testing device mainly includes a dial indicator 10, a universal joint rod 11, and a magnetic base 12. The universal joint rod can be fixed at any angle, making it convenient and quick to use. The magnetic base 12 has an attractive force at its bottom, allowing it to be fixed to other structures. The universal joint rod 11 is used to fix one end of the dial indicator 10, and its direction can be adjusted arbitrarily. Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, one end of the universal joint rod 11 is connected to the magnetic base 12, and the other end of the universal joint rod 11 is equipped with a dial indicator 10. One or more of the five types of gauges designed in this invention, namely gauge a5, gauge b6, gauge c7, gauge d8, and gauge e9, are used in conjunction with the dial indicator to systematically detect the perpendicularity, parallelism, and concentricity of the outer template 2 relative to the inner template 1, the perpendicularity and parallelism of the floating template 3 relative to the inner template 1, and the perpendicularity, parallelism, and concentricity of the core rod 4 relative to the inner template 1.

[0086] In summary, the present invention provides a device and method for detecting the accuracy of a press mold frame. It designs various gauges, and one or more of these gauges work in conjunction with a dial indicator to detect the accuracy of the mold frame. This method systematically detects the perpendicularity, parallelism, concentricity, etc., between the templates in the mold frame, and features high efficiency and simplicity in detection.

[0087] In one possible implementation, the press mold frame accuracy detection device includes:

[0088] The inspection fixture a includes a lower positioning surface, an upper positioning surface, an upper outer circular mating surface, and a lower outer circular mating surface; the lower positioning surface is perpendicular to the lower outer circular mating surface, and the lower outer circular mating surface is parallel to the upper positioning surface; the lower outer circular mating surface is concentric with the upper outer circular mating surface; the lower outer circular mating surface is precisely fitted with the inner hole mating surface of the outer template 2.

[0089] The inspection tool b includes a lower end face, an upper end face, an inner hole mating surface, and an outer circular surface; the upper end face is parallel to the lower end face; the lower end face is perpendicular to the inner hole mating surface; the inner hole mating surface and the outer circular surface are concentric; the dimensions of the inner hole mating surface and the upper outer circular surface are precisely fitted.

[0090] The inspection tool c includes a lower end face c and a side face c, wherein the lower end face c is perpendicular to the side face c;

[0091] The inspection fixture d includes a lower end face d, an upper end face d, an inner hole mating surface d, and an outer circular surface d; the lower end face d is parallel to the upper end face d, and the lower end face d is perpendicular to the inner hole mating surface d; the inner hole mating surface d and the outer circular mating surface of the core rod are precisely fitted; the outer circular surface d and the inner hole mating surface of the outer template are precisely fitted.

[0092] The inspection fixture e includes an outer circular surface and two parallel lower and upper end surfaces; the outer circular surface of e is precisely fitted with the inner mating surface of the floating template.

[0093] Specifically, such as Figure 2 As shown, the fixture a5 includes a lower positioning surface 5-1, an upper positioning surface 5-3, an upper outer circular mating surface 5-4, and a lower outer circular mating surface 5-2. The lower positioning surface 5-1 is perpendicular to the lower outer circular mating surface 5-2, and the lower outer circular mating surface 5-2 is parallel to the upper positioning surface 5-3. The lower outer circular mating surface 5-2 and the upper outer circular mating surface 5-4 are concentric. The lower outer circular mating surface 5-2 and the inner hole mating surface 2-2 of the outer template 2 are in a precision fit. A precision fit means that the fixture a5 can only rotate relative to the outer template 2 and move vertically, but cannot move horizontally, thus ensuring that the fixture a5 can be stably placed on the outer template 2. The fit is guaranteed by single-piece machining.

[0094] like Figure 3 As shown, fixture b6 includes a lower end face 6-1, an upper end face 6-2, an inner hole mating surface 6-3, and an outer circular surface 6-4. The upper end face 6-2 is parallel to the lower end face 6-1; the lower end face 6-1 is perpendicular to the inner hole mating surface 6-3; the inner hole mating surface 6-3 and the outer circular surface 6-4 are concentric; the dimensions of the inner hole mating surface 6-3 and the upper outer circular mating surface 5-4 are precisely fitted. Fixture b6 can be fitted onto fixture a5 through the fit between the inner hole mating surface 6-3 and the upper outer circular mating surface 5-4, and fixture b6 can rotate relative to fixture a5. The precise fit between the inner hole mating surface 6-3 and the upper outer circular mating surface 5-4 is ensured by single-piece machining.

[0095] like Figure 4As shown, the fixture c7 includes a lower end face 7-1 and a side face 7-2, with the lower end face 7-1 perpendicular to the side face 7-2. Furthermore, the cross-sectional dimension of the lower end face 7-1 of the fixture c7 is larger than that of the side face 7-2. When the fixture c7 is placed vertically with the lower end face 7-1 at the bottom, the stability of the fixture c7 in its vertical position can be further ensured.

[0096] like Figure 5 As shown, the fixture d8 includes a lower end face 8-1, an upper end face 8-2, an inner hole mating surface 8-3, and an outer circular surface 8-4. The lower end face 8-1 is parallel to the upper end face 8-2 and perpendicular to the inner hole mating surface 8-3. The inner hole mating surface 8-3 and the outer circular mating surface 4-2 of the core rod are precisely fitted, allowing the fixture d8 to be fitted onto the core rod 4 via the inner hole mating surface 8-3 and the outer circular mating surface 4-2, and the fixture d8 can rotate relative to the core rod 4. The outer circular surface 8-4 and the inner hole mating surface 2-2 of the outer template 2 are precisely fitted, allowing the fixture d8 to rotate relative to the outer template 2.

[0097] like Figure 6 As shown, the fixture e9 includes an outer circular surface 9-3 and two parallel lower end surfaces 9-1 and 9-2; the outer circular surface 9-3 and the inner mating surface of the floating template 3 are precisely fitted.

[0098] This invention also provides a method for detecting the accuracy of a press mold frame, wherein the press mold frame includes a female mold plate, an outer mold plate, a floating mold plate, and a core rod, and the method employs the press mold frame accuracy detection device of this invention. The method includes the following steps:

[0099] Step 101: Prepare gauges a, b, c, d, and e, as well as a dial indicator testing device; the dial indicator testing device includes a dial indicator, a universal joint rod, and a magnetic base for use.

[0100] Specifically, before inspecting the accuracy of the press mold frame, the inspection device should be prepared. The inspection device includes gauges a5, b6, c7, d8, and e9, as well as a dial indicator.

[0101] Step 102: Use the inspection tool a, the inspection tool b, the inspection tool c and the dial indicator to detect the perpendicularity of the outer template relative to the female template.

[0102] Specifically, perpendicularity refers to the degree of deviation between two structures in the vertical direction, and is an indicator used to describe the degree of alignment or deviation between the two structures in the vertical direction. The deviation of the outer template 2 relative to the inner template 1 in the vertical direction is detected using gauges a5, b6, c7, and a dial indicator.

[0103] Step 103: Use the inspection tool a, the inspection tool b and the dial indicator to detect the parallelism of the outer template relative to the female template.

[0104] Specifically, parallelism refers to the degree of deviation between two structures in the horizontal direction. The deviation of the outer template 2 relative to the inner template 1 in the horizontal direction is detected using gauges a5 and b6 and a dial indicator.

[0105] Step 104: Use the inspection tool a, the inspection tool b and the dial indicator to detect the concentricity of the outer template relative to the female template.

[0106] Specifically, concentricity refers to the degree of offset between the centers of the cross sections of two structures in the horizontal direction. The degree of offset between the outer template 2 and the center of the inner template 1 is detected using gauge a5, gauge b6, and a dial indicator.

[0107] Step 105: Use the inspection tool c, the inspection tool d and the dial indicator to detect the perpendicularity of the floating template relative to the female template.

[0108] Step 106: Use the gauge d and the dial indicator to check the parallelism of the floating template relative to the female template.

[0109] Step 107: Use the gauge c, the gauge e, and the dial indicator to detect the perpendicularity of the core rod relative to the female template.

[0110] Step 108: Use the gauge e and the dial indicator to detect the parallelism of the core rod relative to the female template; use the gauge d and the dial indicator to detect the concentricity of the core rod relative to the female template.

[0111] In one possible implementation, the perpendicularity of the outer template relative to the female template is detected using the gauges a, b, and c, specifically including the following steps:

[0112] Fix the inspection tool c to the upper end face of the female template, fix the inspection tool a to the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end face of the outer template 2, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0113] The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b.

[0114] Fix the magnetic base to the upper end face of the b of the fixture b, and fix the dial indicator to the universal rod. After the pointer of the dial indicator is in vertical contact with the c side of the fixture c, adjust the dial indicator to zero.

[0115] The outer template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the outer template is determined to be the perpendicularity of the outer template relative to the female template.

[0116] Specifically, such as Figure 7 As shown, gauge c7 is vertically fixed to the upper end face 1-1 of the female template 1, and the lower end face 7-1 of gauge c7 is in contact with the upper end face 1-1 of the female template 1. Gauge a5 is fixed on the outer template 2, and the lower end positioning surface 5-1 of gauge a5 is precisely fitted with the upper end face 2-1 of the outer template 2, and the lower end outer circle mating surface 5-2 of gauge a5 is precisely fitted with the inner hole mating surface 2-2 of the outer template 2.

[0117] The fixture b6 is fitted onto the fixture a5. The upper positioning surface 5-3 of fixture a5 is in contact with the lower surface 6-1 of fixture b6, and the outer circle mating surface 5-4 of the upper circle of fixture a5 is precisely mated with the inner hole mating surface 6-3 of fixture b6. The fixture b6 can rotate relative to the fixture a5.

[0118] Fix the magnetic base 12 to the upper end face 6-2 of the gauge b6, then connect one end of the universal rod 11 to the magnetic base 12, and install the dial indicator 10 on the other end of the universal rod 11.

[0119] Adjust the pointer of dial indicator 10 to point vertically to the c-side 7-2 of fixture c7, and make the tip of the pointer contact the c-side 7-2 of fixture c7, and then adjust dial indicator 10 to zero.

[0120] Driven by the hydraulic cylinder of the outer template 2 of the press, the outer template 2 is driven to move upward. During the upward movement of the outer template 2, the gauge a5 installed on the outer template 2 is driven. The gauge a5 drives the gauge b6 and the dial indicator detection device installed on the gauge b6 to move upward. During the movement, the maximum reading of the dial indicator 10 is the perpendicularity of the outer template 2 relative to the female template 1.

[0121] In one possible implementation, the parallelism of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator detection device, specifically including the following steps:

[0122] Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0123] The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b.

[0124] Fix the magnetic base to the upper end face of the gauge b, and fix the dial indicator to the universal joint 11. After the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0125] Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture a at least one revolution;

[0126] During the rotation process, the maximum reading of the dial gauge is determined to be the parallelism of the outer template relative to the female template 1.

[0127] Specifically, such as Figure 8 As shown, fixture a5 is fixed on outer template 2. The lower end positioning surface 5-1 of fixture a5 is precisely fitted with the upper end surface 2-1 of outer template 2, and the outer circular mating surface 5-2 of the lower end of fixture a5 is precisely fitted with the inner hole mating surface 2-2 of outer template 2. Fixture b6 is fitted onto fixture a5. The upper end positioning surface 5-3 of fixture a5 is fitted with the lower end surface 6-1 of fixture b6, and the outer circular mating surface 5-4 of the upper end of fixture a5 is precisely fitted with the inner hole mating surface 6-3 of fixture b6. Fixture b6 can rotate relative to fixture a5.

[0128] Fix the magnetic base 12 to the upper end face 6-2 of the gauge b6. Connect the magnetic base 12 to one end of the universal rod 11 and install the dial indicator 10 at the other end of the universal rod 11. Adjust the dial indicator 10 so that its pointer points vertically to the stop end face 1-2 of the female template 1 and contacts the stop end face 1-2 of the female template 1. Then adjust the dial indicator 10 to zero.

[0129] Keep gauge a5 fixed on outer template 2, and while keeping the lower end face 6-1 of gauge b in contact with the upper positioning surface 5-3 of gauge a, rotate gauge b6 around gauge a5 at least one revolution. This is to prevent gauge b6 from shifting vertically during rotation, which would cause it to tilt and result in inaccurate test data. Furthermore, rotating at least one revolution ensures that the pointer can fully contact the stop end face 1-2 of the female template for one revolution.

[0130] After the rotation stops, the maximum reading recorded in dial gauge 10 during the rotation process is taken as the parallelism of the outer template 2 relative to the inner template 1.

[0131] In one possible implementation, the concentricity of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator detection device, specifically including the following steps:

[0132] Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template.

[0133] The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b.

[0134] The magnetic base 1 is fixed to the outer circular surface of the gauge b, and the dial indicator is fixed to the universal rod. After the dial indicator needle is in vertical contact with the inner hole mating surface of the female template, the dial indicator is adjusted to zero.

[0135] Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture at least one revolution;

[0136] It is determined that during the rotation process, half of the maximum reading of the dial gauge represents the concentricity of the outer template relative to the female template.

[0137] Specifically, such as Figure 9 As shown, fixture a5 is fixed on outer template 2. The lower end positioning surface 5-1 of fixture a5 is precisely fitted with the upper end surface 2-1 of outer template 2, and the outer circular mating surface 5-2 of the lower end of fixture a5 is precisely fitted with the inner hole mating surface 2-2 of outer template 2. Fixture b6 is fitted onto fixture a5. The upper end positioning surface 5-3 of fixture a5 is fitted with the lower end surface 6-1 of fixture b6, and the outer circular mating surface 5-4 of the upper end of fixture a5 is precisely fitted with the inner hole mating surface 6-3 of fixture b6. Fixture b6 can rotate relative to fixture a5.

[0138] The magnetic base 12 is fixed to the outer circular surface 6-4 of the gauge b6. The magnetic base 12 is connected to one end of the universal rod 11, and the dial indicator 10 is installed at the other end of the universal rod 11. The pointer of the dial indicator 10 is adjusted to point vertically to the inner hole mating surface 1-3 of the female template 1, and the pointer is made to contact the inner hole mating surface 1-3 of the female template 1. Then the dial indicator is adjusted to zero.

[0139] Keep gauge a5 fixed on outer template 2, and while keeping the lower end face 6-1 of gauge b in contact with the upper end positioning face 5-3 of gauge a, rotate gauge b6 around gauge a5 at least one revolution. After the rotation stops, read the maximum reading recorded in dial indicator 10 during the rotation process, and determine that half of the maximum reading is the concentricity of outer template 2 relative to female template 1.

[0140] The principle of testing the concentricity of outer template 2 relative to inner template 1 is as follows: Figure 10 As shown, center point A corresponds to the center of the mating surface of the inner hole of the female template 1, center point B corresponds to the center of the inspection fixture b6, inspection fixture a5, and outer template 2, and the distance e between center point A and center point B corresponds to the concentricity of the outer template 2 relative to the female template 1.

[0141] The diameter of the mating surface of the inner hole of the female template 1 is D. When dial indicator 10 is on the left side, its distance from the center point A is L. When dial indicator 10 rotates from the left to the right side, the maximum reading of dial indicator 10 is g. Figure 10 It can be concluded that:

[0142] L + L + g = D (1)

[0143] (L+e) ×2=D (2)

[0144] From formulas (1) and (2), we can get e = g / 2, that is, the concentricity of the outer template 2 relative to the inner template 1 is half of the maximum reading g of the dial gauge 10.

[0145] In one possible implementation, the perpendicularity of the floating template relative to the female template is detected using the gauge c, the gauge d, and the dial indicator, specifically including the following steps:

[0146] Fix the gauge c to the upper end face of the female template, and fix the gauge d to the upper end face of the floating template;

[0147] Fix the magnetic base to the upper end face of the d of the fixture d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the c of the fixture c, adjust the dial indicator to zero.

[0148] The floating template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the floating template is determined to be the perpendicularity of the floating template relative to the female template.

[0149] Specifically, such as Figure 11As shown, the fixture c7 is vertically fixed to the upper end face 1-1 of the female template 1, and the lower end face 7-1 of the fixture c7 is in contact with the upper end face 1-1 of the female template 1. The fixture d8 is nested in the outer template 2, and the outer circular surface 8-4 of the fixture d8 is precisely fitted with the inner hole mating surface 2-2 of the outer template 2. Under the constraint of the inner hole mating surface 2-2 of the outer template 2, the fixture d8 can move vertically but cannot move horizontally. At the same time, the lower end face 8-1 of the fixture d8 is in contact with the upper end face 3-1 of the floating template 3.

[0150] Fix the magnetic base 12 to the upper end face 8-2 of the gauge d8. Connect the magnetic base 12 to one end of the universal rod 11 and install the dial indicator 10 at the other end of the universal rod 11. Adjust the pointer of the dial indicator 10 to point vertically to the c side 7-2 of the gauge c7 and make the pointer contact the c side 7-2. Then adjust the dial indicator to zero.

[0151] Driven by the hydraulic cylinder of the floating template 3 of the press, the floating template 3 moves upward. During the upward movement of the floating template 3, the gauge d8 installed on the floating template 3 and the dial indicator 10 installed on the gauge d8 move upward. During the movement, the maximum reading of the dial indicator 10 is the perpendicularity of the floating template 2 relative to the female template 1.

[0152] In one possible implementation, the parallelism of the floating template relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps:

[0153] The gauge d is fixed to the upper end face of the floating template;

[0154] Fix the magnetic base to the upper end face of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0155] While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution;

[0156] During the rotation of the fixture d, the maximum reading of the dial indicator is determined to be the parallelism of the floating template relative to the female template.

[0157] Specifically, such as Figure 12 As shown, the gauge d8 is nested within the outer template 2, and the outer circular surface 8-4 of the gauge d8 is precisely fitted with the inner hole mating surface 2-2 of the outer template. Under the constraint of the inner hole mating surface 2-2 of the outer template, the gauge d8 can move vertically but cannot move horizontally. At the same time, the lower end surface 8-1 of the gauge d8 is in contact with the upper end surface 3-1 of the floating template 3.

[0158] Fix the magnetic base 12 to the upper end face 8-2 of the gauge d8. Connect the magnetic base 12 to one end of the universal rod 11 and install the dial indicator 10 at the other end of the universal rod 11. Adjust the pointer of the dial indicator 10 to point vertically to the stop end face 1-2 of the female template 1 and make the pointer contact the stop end face 1-2 of the female template 1. Then adjust the dial indicator to zero.

[0159] Keep the lower end face 8-1 of the gauge d8 in contact with the upper end face 3-1 of the floating template 3, and rotate the gauge d8 at least one revolution; during the rotation of the gauge d8, the maximum reading of the dial indicator 10 is the parallelism of the floating template 3 relative to the female template 1.

[0160] In one possible implementation, the perpendicularity of the core rod relative to the female template is detected using the gauge c, the gauge e, and the dial indicator testing device, specifically including the following steps:

[0161] Fix the gauge c to the upper end face of the female template, and fix the gauge e to the upper end face of the core rod;

[0162] Fix the magnetic base to the upper end face of the inspection fixture e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the inspection fixture c, adjust the dial indicator to zero.

[0163] The core rod is moved vertically upward, and the maximum reading of the dial indicator during the upward movement of the core rod is determined to be the perpendicularity of the core rod relative to the female template.

[0164] Specifically, such as Figure 13 As shown, gauge c7 is vertically fixed to the upper end face 1-1 of the female template 1, and the lower end face 7-1 of gauge c7 is in contact with the upper end face 1-1 of the female template 1. Through the cooperation between the outer circular surface 9-3 of gauge e9 and the inner hole mating surface 3-2 of the floating template, gauge e9 is nested in the floating template 3, and the lower end face 9-1 of gauge e9 is in contact with the upper end face 4-1 of the core rod, so that gauge e9 is fixed on the upper end face 4-1 of the core rod.

[0165] Fix the magnetic base 12 to the upper end face 9-2 of the gauge e9. Connect the magnetic base 12 to one end of the universal rod 11 and install the dial indicator 10 at the other end of the universal rod 11. Adjust the pointer of the dial indicator 10 to point vertically to the c side 7-2 of the gauge c7, and make the end point of the pointer contact the c side 7-2 of the gauge c7. Then adjust the dial indicator 10 to zero.

[0166] The core rod 4 of the press is driven by the hydraulic cylinder to move vertically upward. During the movement, the maximum reading of the dial indicator 10 is the perpendicularity of the core rod 4 to the female template 1.

[0167] In one possible implementation, the parallelism of the mandrel relative to the female template is detected using the gauge e and the dial indicator; the concentricity of the mandrel relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps:

[0168] Fix the gauge e to the upper end face of the core rod;

[0169] Fix the magnetic base 12 to the upper end face of the gauge e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero.

[0170] While keeping the lower end face of the gauge e in contact with the upper end face of the core rod, rotate the gauge e at least one revolution;

[0171] During the rotation of the fixture e, the maximum reading of the dial indicator is determined to be the parallelism of the core rod relative to the female template.

[0172] The gauge is fitted onto the core rod, and the lower end face of the gauge d is made to fit against the upper end face of the floating template;

[0173] Fix the magnetic base to the outer circle mating surface of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in perpendicular contact with the inner hole mating surface of the female template, adjust the dial indicator to zero.

[0174] While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution;

[0175] During the rotation of the fixture d, half of the maximum reading of the dial indicator is determined to be the concentricity of the core rod relative to the female template.

[0176] Specifically, such as Figure 14 As shown, the gauge e9 is nested within the floating template 3, and the lower end face 9-1 of gauge e9 is aligned with the upper end face 4-1 of the core rod, thus fixing gauge e9 to the upper end face 4-1 of the core rod. A magnetic base 12 is fixed to the upper end face 9-2 of gauge e9. A magnetic base 12 is connected to one end of the universal joint rod 11, and a dial indicator 10 is installed at the other end. The pointer of the dial indicator 10 is adjusted so that it points vertically to the stop end face 1-2 of the female template 1, and after the pointer contacts the stop end face, the dial indicator 10 is adjusted to zero. Keeping the lower end face 9-1 of gauge e9 aligned with the upper end face 4-1 of the core rod, gauge e9 is rotated at least one revolution. During the rotation of gauge e9, the maximum reading of the dial indicator 10 represents the parallelism of the core rod 4 relative to the female template 1.

[0177] like Figure 15 As shown, the gauge d8 is fitted onto the core rod 4, with the lower end face 8-1 of gauge d8 fitting against the upper end face 3-1 of the floating template 3. The inner hole mating surface 8-3 of gauge d8 fits precisely with the outer circle mating surface 4-2 of the core rod, and the outer circle surface 8-4 fits precisely with the inner hole mating surface 2-2 of the outer template 2. The magnetic base 12 is fixed to the upper end face 9-2 of gauge e9. The magnetic base 12 is connected to one end of the universal rod 11, and a dial indicator 10 is installed at the other end of the universal rod 11. The pointer of the dial indicator 10 is adjusted so that it points vertically to the inner hole mating surface 1-3 of the female template 1, and the tip of the pointer contacts the inner hole mating surface 1-3 of the female template 1. Then, the dial indicator 10 is adjusted to zero.

[0178] Rotate the gauge e9 around the core rod 4 at least once. During the rotation of the gauge e9, the dial indicator testing device will rotate. The pointer of the dial indicator 10 will contact the inner hole mating surface 1-3 of the female template 1 at least once. Read the maximum reading recorded by the dial indicator 10 during the rotation. Half of the maximum reading is the concentricity of the core rod 4 relative to the female template 1.

[0179] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0180] 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 device for detecting the accuracy of a press mold frame, the press mold frame comprising a female mold plate, an outer mold plate, a floating mold plate, and a core rod, characterized in that, The testing device includes gauge a, gauge b, gauge c, gauge d, gauge e, and a dial indicator testing device; the dial indicator testing device includes a dial indicator, a universal gauge rod, and a magnetic gauge base used in conjunction with the gauge. One or more of the following fixtures are used in conjunction with the dial indicator testing device to detect the perpendicularity, parallelism, and concentricity of the outer template relative to the female template, the perpendicularity and parallelism of the floating template relative to the female template, and the perpendicularity, parallelism, and concentricity of the core rod relative to the female template. The fixture a includes a lower positioning surface, an upper positioning surface, an upper outer circular mating surface, and a lower outer circular mating surface; the lower positioning surface is perpendicular to the lower outer circular mating surface, and the lower outer circular mating surface is parallel to the upper positioning surface; the lower outer circular mating surface is concentric with the upper outer circular mating surface. The inspection tool b includes a lower end face, an upper end face, an inner hole mating surface, and an outer circular surface; the upper end face is parallel to the lower end face; the lower end face is perpendicular to the inner hole mating surface; the inner hole mating surface and the outer circular surface are concentric; the dimensions of the inner hole mating surface and the upper outer circular surface are precisely fitted. The inspection tool c includes a lower end face c and a side face c, wherein the lower end face c is perpendicular to the side face c; The inspection fixture d includes a lower end face d, an upper end face d, an inner hole mating surface d, and an outer circular surface d; the lower end face d is parallel to the upper end face d, and the lower end face d is perpendicular to the inner hole mating surface d; the inner hole mating surface d and the outer circular mating surface of the core rod are precisely fitted; the outer circular surface d and the inner hole mating surface of the outer template are precisely fitted. The fixture e includes an outer circular surface and two parallel lower and upper end surfaces; the outer circular surface of e is precisely fitted with the inner mating surface of the floating template.

2. A method for detecting the accuracy of a press mold frame using the detection device described in claim 1, characterized in that, The method includes the following steps: Prepare inspection fixtures a, b, c, d, and e, as well as a dial indicator testing device; the dial indicator testing device includes a dial indicator, a universal joint rod, and a magnetic base for use. The perpendicularity of the outer template relative to the female template is detected using the gauge a, gauge b, gauge c and the dial indicator testing device. The parallelism of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator testing device. The concentricity of the outer template relative to the female template is detected using the gauge a, the gauge b, and the dial indicator detection device. The perpendicularity of the floating template relative to the female template is detected using the gauge c, the gauge d, and the dial indicator. The parallelism of the floating template relative to the female template is detected using the gauge d and the dial indicator. The perpendicularity of the core rod relative to the female template is detected using the gauge c, the gauge e, and the dial indicator testing device. The parallelism of the core rod relative to the female template is detected using the gauge e and the dial indicator testing device. The concentricity of the core rod relative to the female template is detected using the gauge d and the dial indicator testing device.

3. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The perpendicularity of the outer template relative to the female template is detected using the three gauges a, b, and c, specifically including the following steps: Fix the inspection tool c to the upper end face of the female template, fix the inspection tool a to the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end face of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template. The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b. Fix the magnetic base to the upper end face of the b of the fixture b, and fix the dial indicator to the universal rod. After the pointer of the dial indicator is in vertical contact with the c side of the fixture c, adjust the dial indicator to zero. The outer template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the outer template is determined to be the perpendicularity of the outer template relative to the female template.

4. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The parallelism of the outer template relative to the female template is detected using the fixture a, the fixture b, and the dial indicator testing device, specifically including the following steps: Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template. The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b. Fix the magnetic base to the upper end face of the gauge b, and fix the dial indicator to the universal rod. After the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero. Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture a at least one revolution; During the rotation process, the maximum reading of the dial gauge is determined to be the parallelism of the outer template relative to the female template.

5. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The step of using the gauge a, the gauge b, and the dial indicator to detect the concentricity of the outer template relative to the female template specifically includes the following steps: Fix the inspection tool a on the outer template, so that the lower end positioning surface of the inspection tool a is precisely matched with the upper end surface of the outer template, and the lower end outer circle mating surface of the inspection tool a is precisely matched with the inner hole mating surface of the outer template. The fixture b is fitted onto the fixture a, such that the upper positioning surface of fixture a is in contact with the lower surface of fixture b, and the outer circle mating surface of the upper end of fixture a is precisely mated with the inner hole mating surface of fixture b. The magnetic base is fixed to the outer circular surface of the gauge b, and the dial indicator is fixed to the universal rod. After the dial indicator needle is in vertical contact with the inner hole mating surface of the female template, the dial indicator is adjusted to zero. Keep the fixture a fixed, and while keeping the lower end face of the fixture b in contact with the upper end positioning surface of the fixture a, rotate the fixture b around the fixture at least one revolution; It is determined that during the rotation process, half of the maximum reading of the dial gauge represents the concentricity of the outer template relative to the female template.

6. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The process of using the gauge c, the gauge d, and the dial indicator to detect the perpendicularity of the floating template relative to the female template specifically includes the following steps: Fix the gauge c to the upper end face of the female template, and fix the gauge d to the upper end face of the floating template; Fix the magnetic base to the upper end face of the d of the fixture d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the c of the fixture c, adjust the dial indicator to zero. The floating template is moved vertically upward, and the maximum reading of the dial gauge during the upward movement of the floating template is determined to be the perpendicularity of the floating template relative to the female template.

7. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The parallelism of the floating template relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps: The gauge d is fixed to the upper end face of the floating template; Fix the magnetic base to the upper end face of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero. While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution; During the rotation of the fixture d, the maximum reading of the dial indicator is determined to be the parallelism of the floating template relative to the female template.

8. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The step of using the gauge c, the gauge e, and the dial indicator to detect the perpendicularity of the core rod relative to the female template specifically includes the following steps: Fix the gauge c to the upper end face of the female template, and fix the gauge e to the upper end face of the core rod; Fix the magnetic base to the upper end face of the gauge e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the side of the gauge c, adjust the dial indicator to zero. The core rod is moved vertically upward, and the maximum reading of the dial indicator during the upward movement of the core rod is determined to be the perpendicularity of the core rod relative to the female template.

9. The method for detecting the accuracy of a press mold frame according to claim 2, characterized in that, The parallelism of the core rod relative to the female template is detected using the gauge e and the dial indicator; the concentricity of the core rod relative to the female template is detected using the gauge d and the dial indicator, specifically including the following steps: Fix the gauge e to the upper end face of the core rod; Fix the magnetic base to the upper end face of the gauge e, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in vertical contact with the stop end face of the female template, adjust the dial indicator to zero. While keeping the lower end face of the gauge e in contact with the upper end face of the core rod, rotate the gauge e at least one revolution; During the rotation of the fixture e, the maximum reading of the dial indicator is determined to be the parallelism of the core rod relative to the female template. The gauge is fitted onto the core rod, and the lower end face of the gauge d is made to fit against the upper end face of the floating template; Fix the magnetic base to the outer circle mating surface of the gauge d, fix the dial indicator to the universal rod, and after the pointer of the dial indicator is in perpendicular contact with the inner hole mating surface of the female template, adjust the dial indicator to zero. While keeping the lower end face of the fixture d in contact with the upper end face of the floating template, rotate the fixture d at least one revolution; During the rotation of the fixture d, half of the maximum reading of the dial indicator is determined to be the concentricity of the core rod relative to the female template.

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