Measuring tool device for thickness grouping before chemical milling of forge piece femoral stem

Abstract

The utility model provides a measuring tool device for thickness grouping before chemical milling of a forge piece femoral stem and belongs to the technical field of measuring tools. A lower bottom plate is fixedly supported on the upper portion of a base, and a lower platform is arranged on the lower bottom plate. An inductor bracket is vertically fixed at the upper part of the lower bottom plate; an upper platform is fixed on the inductor bracket; the lower platform and the upper platform are respectively provided with a cavity matched with a measured product in shape. A product supporting block for placing a product is fixed at the upper part of the corresponding part of the cavity of the lower platform; a cavity is formed in the upper platform, a plurality of upper inductance contacts are arranged in the cavity in the upper platform, a plurality of lower inductance contacts are arranged in the cavity in the lower platform, the plurality of upper inductance contacts and the plurality of lower inductance contacts are in one-to-one up-and-down correspondence to form a plurality of inductance contact groups, and the position of each inductance contact group is determined according to the position of a cross section required to be detected on a measured product. The thickness of products is measured and grouped by adopting the inductance contacts which are arranged up and down, so that the size of each product can be quickly and accurately measured during thickness grouping, and subsequent chemical milling treatment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring tools, and in particular relates to a measuring tool device for thickness grouping of forged femoral stems before milling. Background Art

[0002] When titanium alloy products are forged, it is inevitable that the product will be slightly oxidized, resulting in a slight α layer (contamination layer) attached to the surface of the product. Therefore, chemical milling should be performed in subsequent operations to remove these slight contamination layers. However, chemical milling is based on product size, and there will be some differences in product size, so the products need to be grouped by thickness. Now calipers are used for thickness grouping. When grouping, the operator must measure the cross-sectional thickness of each product, and then put the products with the same size status that can be chemically milled together. The disadvantages of this traditional manual caliper grouping are: 1. The manual measurement error is large. The difference in the measurement method of the grouping personnel will lead to size errors, which will affect the grouping and the quality of chemical milling; 2. The workload is large. The grouping personnel need to measure the required size of each product. The greater the workload, the greater the risk of error, which will directly affect the quality of the product; 3. The efficiency is low. The operator needs to waste a lot of time measuring the size, which will affect the work efficiency and the subsequent advancement of the product. Therefore, it is necessary to propose improvements. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a measuring tool device for thickness grouping of forged femoral stems before chemical milling. The utility model aims to design and manufacture measuring tools for thickness grouping of forged femoral stems before chemical milling, so as to ensure that the size of each product can be measured quickly and accurately when the thickness is grouped, so as to facilitate subsequent chemical milling processing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A measuring tool device for thickness grouping of forged femoral stems before milling, comprising a base, a column is vertically fixed on the upper part of the base, a lower base plate is fixedly supported on the upper part of the column, and a lower platform is provided on the upper part of the lower base plate; an inductor bracket is vertically fixed on the upper part of the lower base plate, an upper base plate is fixed on the inductor bracket, and an upper platform is provided on the upper base plate; cavities adapted to the shape of the product to be measured are provided on both the lower platform and the upper platform;

[0006] A product support block for placing products is fixed on the upper portion corresponding to the cavity of the lower platform;

[0007] A plurality of upper inductive contacts are provided in the cavity on the upper platform, and a plurality of lower inductive contacts are provided in the cavity on the lower platform. The plurality of upper inductive contacts and the plurality of lower inductive contacts correspond one-to-one up and down to form a plurality of inductive contact groups, and the position of each group of the inductive contact groups is determined according to the position of the required detection section on the measured product.

[0008] Further limiting the above scheme, according to the detection of the femoral stem, the multiple upper inductive contacts are divided into inductive contacts on the stem body and inductive contacts on the neck, each of the inductive contacts on the stem body is adjustably connected to the upper platform through an inductive adjustment block on the stem body, and the inductive contacts on the neck are adjustably connected to the upper platform through an inductive adjustment block on the neck;

[0009] The multiple lower inductance contacts are divided into lower handle body inductance contacts and lower neck inductance contacts. Each lower handle body inductance contact is adjustably connected to the lower platform via a lower handle body inductance adjustment block, and the lower neck inductance contact is adjustably connected to the lower platform via a lower neck inductance adjustment block.

[0010] Further defining the above scheme, the adjustable connection structure between the inductance contact on the handle body and the inductance adjustment block on the handle body and the upper platform is as follows: the inductance contact on the handle body is fixed in the hole on the inductance adjustment block on the handle body through a bushing, and the lower end of the inductance contact on the handle body passes through the inner cavity on the upper platform; an upper transverse slide groove is provided on the upper platform, an upper T-shaped nut I is slidably provided in the upper transverse slide groove, an upper waist-shaped hole I is provided on the inductance adjustment block on the handle body, and an upper screw I passes through the upper waist-shaped hole I and is connected to the upper T-shaped nut I;

[0011] The adjustable connection structure between the neck upper inductance contact and the neck upper inductance adjustment block and the upper platform is as follows: the front part of the neck upper inductance adjustment block is fixedly connected with the neck upper inductance transverse adjustment block by an upper screw II, the neck upper inductance transverse adjustment block is provided with an upper waist-shaped hole II for adapting and adjusting the connection with the upper screw II, the neck upper inductance contact is fixed to the neck upper inductance transverse adjustment block by a bushing, and the lower end of the neck upper inductance contact passes through the inner cavity on the upper platform; an upper curved arc slide groove is provided on the upper platform, an upper T-shaped nut II is slidably provided in the upper curved arc slide groove, an upper waist-shaped hole III is provided on the neck upper inductance adjustment block, and an upper screw III passes through the upper waist-shaped hole III and is connected with the upper T-shaped nut II;

[0012] The adjustable connection structure between the inductance contact under the handle body and the inductance adjustment block under the handle body and the lower platform is as follows: the inductance contact under the handle body is fixed in the hole on the inductance adjustment block under the handle body through a bushing, and the upper end of the inductance contact under the handle body passes through the inner cavity on the lower platform; a lower transverse slide groove is provided on the lower platform, a lower T-shaped nut I is slidably provided in the lower transverse slide groove, a lower waist-shaped hole I is provided on the inductance adjustment block under the handle body, and a lower screw I passes through the lower waist-shaped hole I and is connected to the T-shaped nut I;

[0013] The adjustable connection structure between the lower neck inductance contact and the lower neck inductance adjustment block and the lower platform is as follows: the front part of the lower neck inductance adjustment block is fixedly connected with the lower neck inductance lateral adjustment block by a lower screw II, and the lower neck inductance lateral adjustment block is provided with a lower waist-shaped hole II for adapting and adjusting the connection with the lower screw II, the lower neck inductance contact is fixed to the lower neck inductance lateral adjustment block by a bushing, and the lower end of the lower neck inductance contact passes through the inner cavity on the lower platform; a lower curved arc slide groove is provided on the lower platform, and a lower T-nut II is slidably provided in the lower curved arc slide groove, and a lower waist-shaped hole III is provided on the lower neck inductance adjustment block, and the lower screw III passes through the lower waist-shaped hole III and is connected with the lower T-nut II.

[0014] To further limit the above scheme, the product support block is provided with a product placement groove adapted to the shape of the product, and an inductor through-hole corresponding to the position of the lower inductor contact is provided on the product support block and through the product placement groove, and the upper end of the lower inductor contact passes through the inner cavity of the lower platform and simultaneously passes through the corresponding inductor through-hole on the product support block, and the upper end of the lower inductor contact is not higher than the bottom surface of the product placement groove.

[0015] As a further limitation of the above solution, the product support block is fixedly connected to the lower platform via a positioning pin and a support block fixing screw.

[0016] The advantages of this utility model compared with the prior art:

[0017] 1. This scheme designs and manufactures measuring tools for the grouping of thickness of forged femoral stems before milling. The upper and lower inductive contacts are used to measure the product thickness and group it, thereby reducing the measurement error. The product size state will be stable when the measuring tool is used for measurement, and the subsequent milling process can also be uniformly measured, making the operation very convenient;

[0018] 2. This solution reduces the workload of thickness grouping operators. By using this measuring tool to measure the size and setting the required size, the size measurement can be completed by simply placing the product on the measuring tool device, which reduces the workload of grouping operators.

[0019] 3. This solution has high working efficiency. The thickness grouping personnel do not need to measure each section one by one. Using this measuring tool, the size of each section can be measured at one time, which improves efficiency;

[0020] 4. This solution only requires one set of clamping tooling for measuring each product. It is easy to use, highly accurate and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the structural front view of the utility model;

[0022] Figure 2 It is a left view of the structure of the utility model;

[0023] Figure 3 It is a top view of the structure of the utility model;

[0024] Figure 4 This is a top view of the structure of the product support block in the utility model;

[0025] Figure 5 For this utility model Figure 4 AA section view in. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0028] See also Figure 1-5 , describe the embodiments of the present utility model in detail.

[0029] Example: Gauge device for thickness grouping of forged femoral stem before milling, see Figure 1 As shown, it comprises a base 1, a column 2 is vertically fixed on the upper part of the base 1, a lower bottom plate 3 is fixedly supported on the upper part of the column 1, and a lower platform 4 is arranged on the upper part of the lower bottom plate 3; an inductor bracket 5 is vertically fixed on the upper part of the lower bottom plate 3, an upper bottom plate 6 is fixed on the inductor bracket 5, and an upper platform 7 is arranged on the upper bottom plate 6; both the lower platform 4 and the upper platform 7 are provided with cavities adapted to the shape of the product to be measured;

[0030] A product support block 8 for placing products is fixed on the upper portion corresponding to the cavity of the lower platform 4;

[0031] A plurality of upper inductive contacts 10 are provided in the cavity on the upper platform 7, and a plurality of lower inductive contacts 26 are provided in the cavity on the lower platform 4. The plurality of upper inductive contacts 10 and the plurality of lower inductive contacts 26 correspond one-to-one up and down to form a plurality of inductive contact groups, and the position of each group of the inductive contact groups is determined according to the position of the required detection section on the measured product.

[0032] When using this embodiment, first install and fix the product support block 8 on the lower platform, put the product femoral stem in the cavity on the product support block 8, press the product down and fix it on the product support block by hand; adjust the upper and lower inductive contacts on the measuring tool device to the corresponding cross-sectional positions. Set the required size directly on the measuring tool, and then check the deviation between the product measured by the measuring tool and the set size requirement, and then group them according to the deviation.

[0033] In a specific implementation manner: In this embodiment, according to the detection of the femoral stem, the plurality of upper inductive contacts 10 are divided into an inductive contact 11 on the stem and an inductive contact 12 on the neck, each of the inductive contact 11 on the stem is adjustably connected to the upper platform 7 through an inductive adjustment block 13 on the stem, and the inductive contact 12 on the neck is adjustably connected to the upper platform 7 through an inductive adjustment block 18 on the neck;

[0034] The multiple lower inductance contacts 26 are divided into lower handle body inductance contacts 27 and lower neck inductance contacts 28. Each of the lower handle body inductance contacts 27 is adjustably connected to the lower platform 4 through a lower handle body inductance adjustment block 29, and the lower neck inductance contacts 28 are adjustably connected to the lower platform 4 through a lower neck inductance adjustment block 34.

[0035] Further, see Figure 2 and 3 As shown, the adjustable connection structure between the inductance contact 11 on the handle body and the inductance adjustment block 13 on the handle body and the upper platform 7 is: the inductance contact 11 on the handle body is fixed in the hole on the inductance adjustment block 13 on the handle body through a bushing, and the lower end of the inductance contact 11 on the handle body passes through the inner cavity on the upper platform 7; the upper platform 7 is provided with an upper transverse groove 15, and an upper T-nut Ⅰ14 is slidably provided in the upper transverse groove 15, and an upper waist-shaped hole Ⅰ16 is provided on the inductance adjustment block 13 on the handle body, and an upper screw Ⅰ17 passes through the upper waist-shaped hole Ⅰ16 and is connected with the upper T-shaped nut Ⅰ14.

[0036] The above-mentioned adjustment structure can move the upper T-nut Ⅰ14 along the upper transverse groove 15 and the inductance adjustment block 13 on the handle along the upper waist-shaped hole Ⅰ16 by loosening the upper screw Ⅰ17, thereby adjusting the position of the inductance contact 11 on the handle.

[0037] The adjustable connection structure between the neck upper inductance contact 12 and the neck upper inductance adjustment block 18 and the upper platform 7 is as follows: the front part of the neck upper inductance adjustment block 18 is fixedly connected with the neck upper inductance lateral adjustment block 19 by an upper screw Ⅱ21, and the neck upper inductance lateral adjustment block 19 is provided with an upper waist-shaped hole Ⅱ20 for adapting and adjusting the connection with the upper screw Ⅱ21; the neck upper inductance contact 12 is fixed to the neck upper inductance lateral adjustment block 19 by a bushing, and the lower end of the neck upper inductance contact 12 passes through the inner cavity on the upper platform 7; the upper platform 7 is provided with an upper curved arc groove 22, and an upper T-shaped nut Ⅱ23 is slidably provided in the upper curved arc groove 22; the neck upper inductance adjustment block 18 is provided with an upper waist-shaped hole Ⅲ25, and the upper screw Ⅲ24 passes through the upper waist-shaped hole Ⅲ25 and is connected with the upper T-shaped nut Ⅱ23.

[0038] The above-mentioned adjustment structure can move the inductance lateral adjustment block 19 on the neck by loosening the upper screw II 21 and the upper screw III 24, so that the inductance adjustment block 18 on the neck can move in a circular arc along the upper curved arc groove 22, and the inductance adjustment block 18 on the neck can move along the upper waist-shaped hole III 25, thereby adjusting the position of the inductance contact 12 on the neck.

[0039] The adjustable connection structure between the inductance contact 27 under the handle body and the inductance adjustment block 29 under the handle body and the lower platform 4 is as follows: the inductance contact 27 under the handle body is fixed in the hole on the inductance adjustment block 29 under the handle body through a bushing, and the upper end of the inductance contact 27 under the handle body passes through the inner cavity on the lower platform 4; a lower transverse slide groove 30 is provided on the lower platform 4, and a lower T-nut Ⅰ31 is slidably provided in the lower transverse slide groove 30, and a lower waist-shaped hole Ⅰ33 is provided on the inductance adjustment block 29 under the handle body, and a lower screw Ⅰ32 passes through the lower waist-shaped hole Ⅰ33 and is connected to the T-nut Ⅰ31.

[0040] The above-mentioned adjustment structure can move the lower T-nut Ⅰ31 along the lower transverse groove 30 and the inductance adjustment block 29 under the handle body along the lower waist-shaped hole Ⅰ33 by loosening the lower screw Ⅰ32, thereby adjusting the position of the inductance contact 27 under the handle body.

[0041] The adjustable connection structure between the lower neck inductance contact 28 and the lower neck inductance adjustment block 34 and the lower platform 4 is as follows: the front part of the lower neck inductance adjustment block 34 is fixedly connected with the lower neck inductance lateral adjustment block 35 by the lower screw Ⅱ36, and the lower neck inductance lateral adjustment block 35 is provided with a lower waist-shaped hole Ⅱ37 for adapting and adjusting the connection with the lower screw Ⅱ36; the lower neck inductance contact 28 is fixed on the lower neck inductance lateral adjustment block 35 by a bushing, and the lower end of the lower neck inductance contact 28 passes through the inner cavity on the lower platform 4; the lower platform 4 is provided with a lower curved arc groove 38, and a lower T-shaped nut Ⅱ39 is slidably provided in the lower curved arc groove 38; the lower neck inductance adjustment block 34 is provided with a lower waist-shaped hole Ⅲ40, and the lower screw Ⅲ41 passes through the lower waist-shaped hole Ⅲ40 and is connected with the lower T-shaped nut Ⅱ39.

[0042] The above-mentioned adjustment structure can move the lower neck inductance lateral adjustment block 35 by loosening the lower screw II 36 and the lower screw III 41, so that the lower neck inductance adjustment block 34 can move in a circular arc along the lower curved arc groove 38, and the lower neck inductance adjustment block 34 can move along the lower waist-shaped hole III 40, thereby adjusting the position of the lower neck inductance contact 28.

[0043] Further, see Figure 4 and 5 As shown, the product support block 8 is provided with a product placement groove adapted to the shape of the product, and an inductor through-hole 8-1 corresponding to the position of the lower inductor contact 26 is provided on the product support block 8 and through the product placement groove. The upper end of the lower inductor contact 26 passes through the inner cavity of the lower platform 4 and simultaneously passes through the corresponding inductor through-hole 8-1 on the product support block 8, and the upper end of the lower inductor contact 26 is not higher than the bottom surface of the product placement groove.

[0044] In a specific embodiment, the product support block 8 is fixedly connected to the lower platform 4 via positioning pins and support block fixing screws 9 .

[0045] This measuring tool uses upper and lower arranged inductive contacts to measure the thickness of products and group them. It can ensure that the size of each product can be measured quickly and accurately when the thickness is grouped, which is convenient for subsequent chemical milling processing.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A measuring tool device for thickness grouping of forged femoral stem before milling, characterized in that: The device comprises a base (1), a column (2) being vertically fixed on the upper part of the base (1), a lower base plate (3) being fixedly supported on the upper part of the column (2), a lower platform (4) being provided on the upper part of the lower base plate (3); an inductor bracket (5) being vertically fixed on the upper part of the lower base plate (3), an upper base plate (6) being fixed on the inductor bracket (5), an upper platform (7) being provided on the upper base plate (6); both the lower platform (4) and the upper platform (7) being provided with cavities adapted to the shape of the product to be measured; A product support block (8) for placing products is fixed on the upper portion corresponding to the cavity of the lower platform (4); A plurality of upper inductive contacts (10) are arranged in the cavity on the upper platform (7), and a plurality of lower inductive contacts (26) are arranged in the cavity on the lower platform (4). The plurality of upper inductive contacts (10) and the plurality of lower inductive contacts (26) correspond one-to-one to each other up and down to form a plurality of inductive contact groups. The position of each group of the inductive contact groups is determined according to the position of a required detection section on the measured product.

2. The measuring tool device for thickness grouping of forged femoral stem before milling according to claim 1, characterized in that: According to the detection of the femoral stem, the plurality of upper inductive contacts (10) are divided into an inductive contact (11) on the stem and an inductive contact (12) on the neck, each of the inductive contacts (11) on the stem is adjustably connected to the upper platform (7) via an inductive adjustment block (13) on the stem, and the inductive contact (12) on the neck is adjustably connected to the upper platform (7) via an inductive adjustment block (18) on the neck; The multiple lower inductive contacts (26) are divided into lower inductive contacts (27) of the handle body and lower inductive contacts (28) of the neck body. Each lower inductive contact (27) of the handle body is adjustably connected to the lower platform (4) via a lower inductive adjustment block (29) of the handle body, and the lower inductive contact (28) of the neck body is adjustably connected to the lower platform (4) via a lower inductive adjustment block (34) of the neck body.

3. The measuring tool device for grouping thickness of forged femoral stem before milling according to claim 2, characterized in that: The adjustable connection structure between the inductance contact (11) on the handle body and the inductance adjustment block (13) on the handle body and the upper platform (7) is as follows: the inductance contact (11) on the handle body is fixed in the hole on the inductance adjustment block (13) on the handle body through a bushing, and the lower end of the inductance contact (11) on the handle body passes through the inner cavity on the upper platform (7); the upper platform (7) is provided with an upper transverse slide groove (15), and an upper T-shaped nut I (14) is slidably provided in the upper transverse slide groove (15); the inductance adjustment block (13) on the handle body is provided with an upper waist-shaped hole I (16), and an upper screw I (17) passes through the upper waist-shaped hole I (16) and is connected to the upper T-shaped nut I (14); The adjustable connection structure between the neck upper inductance contact (12) and the neck upper inductance adjustment block (18) and the upper platform (7) is as follows: the front part of the neck upper inductance adjustment block (18) is fixedly connected to the neck upper inductance transverse adjustment block (19) through an upper screw II (21); the neck upper inductance transverse adjustment block (19) is provided with an upper waist-shaped hole II (20) for adapting and adjusting the connection with the upper screw II (21); the neck upper inductance contact (12) is connected to the upper platform (7) through a bushing. The inductor contact (12) is fixed on the neck and passes through the inner cavity on the upper platform (7); the upper platform (7) is provided with an upper curved arc slot (22), and an upper T-shaped nut II (23) is slidably provided in the upper curved arc slot (22); the inductor adjustment block (18) on the neck is provided with an upper waist-shaped hole III (25), and an upper screw III (24) passes through the upper waist-shaped hole III (25) and is connected to the upper T-shaped nut II (23); The adjustable connection structure between the lower inductance contact (27) of the handle body and the lower inductance adjustment block (29) of the handle body and the lower platform (4) is as follows: the lower inductance contact (27) of the handle body is fixed in the hole on the lower inductance adjustment block (29) of the handle body through a bushing, and the upper end of the lower inductance contact (27) of the handle body passes through the inner cavity of the lower platform (4); the lower platform (4) is provided with a lower transverse slide groove (30), and a lower T-shaped nut I (31) is slidably provided in the lower transverse slide groove (30); the lower inductance adjustment block (29) of the handle body is provided with a lower waist-shaped hole I (33), and a lower screw I (32) passes through the lower waist-shaped hole I (33) and is connected to the T-shaped nut I (31); The adjustable connection structure between the lower neck inductance contact (28) and the lower neck inductance adjustment block (34) and the lower platform (4) is as follows: the front part of the lower neck inductance adjustment block (34) is fixedly connected to the lower neck inductance lateral adjustment block (35) through a lower screw II (36); the lower neck inductance lateral adjustment block (35) is provided with a lower waist-shaped hole II (37) for matching and adjusting the connection with the lower screw II (36); the lower neck inductance contact (28) is fixedly connected to the lower platform (4) through a bushing. The lower end of the inductor contact (28) of the neck is fixed on the lower inductor transverse adjustment block (35), and the lower end of the inductor contact (28) of the neck passes through the inner cavity on the lower platform (4); the lower platform (4) is provided with a lower curved arc slide groove (38), and a lower T-shaped nut II (39) is slidably provided in the lower curved arc slide groove (38); the lower inductor adjustment block (34) of the neck is provided with a lower waist-shaped hole III (40), and the lower screw III (41) passes through the lower waist-shaped hole III (40) and is connected with the lower T-shaped nut II (39).

4. The measuring tool device for grouping thickness of forged femoral stem before milling according to claim 3, characterized in that: The product support block (8) is provided with a product placement slot adapted to the shape of the product, and an inductor through-hole (8-1) corresponding to the position of the lower inductor contact (26) is provided on the product support block (8) and through the product placement slot. The upper end of the lower inductor contact (26) passes through the inner cavity of the lower platform (4) and simultaneously passes through the corresponding inductor through-hole (8-1) on the product support block (8), and the upper end of the lower inductor contact (26) is not higher than the bottom surface of the product placement slot.

5. The measuring tool device for thickness grouping of forged femoral stem before milling according to claim 1, characterized in that: The product support block (8) is fixedly connected to the lower platform (4) via positioning pins and support block fixing screws (9).

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