Method for manufacturing a measuring head housing, cap and measuring head housing

Abstract

The invention discloses a method for manufacturing a measuring head housing of an integrated measuring system for manufacturing linear bearings for profile rail guide, wherein a cover blank made of flat material is provided with a layer of adhesive material and is bent into a cover. The invention also discloses a cover for a measuring head housing and a measuring head housing.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a measuring head housing and a cover for the measuring head housing. Background Technology

[0002] A scanning device with a measuring head housing is known from DE 10 2008 022 312 A1, which U-shapedly surrounds a guide rail. A separate sensor is provided within the scanning assembly, configured to scan the gauge to determine the position of the guide slide relative to the guide rail. Since the scanning device is arranged within the measuring head housing, this structure is essentially a so-called integrated measurement system (IMS).

[0003] Here, the measuring head housing is constructed such that three covers are used in each measuring head housing: two side covers and one top cover. Especially in the smaller implementation of the IMS, the geometry of the top cover is complex because there is no so-called tab between the top and side covers in the measuring head housing. Therefore, the top and side covers must be directly joined together. Due to this joining, the top cover needs a certain minimum thickness, as these covers are manually glued together. Simultaneously, for space reasons, the inner wall of the top cover must be hollowly milled. This is complex and expensive. Furthermore, to ensure sealing against process and environmental influences, the sensor can be completely injection-molded using a casting material composed of liquid polyurethane resin. The covers are then screwed together with the measuring head housing.

[0004] Furthermore, DE 10 2008 022 312 A1 discloses a U-shaped cover for a measuring head housing. This cover is connected to the measuring head housing via an end plate using a fixing mechanism. Analytical electronics and sensors inside the measuring head housing are injection molded relative to external influences using casting material after the cover is assembled, thereby ensuring a fluid-tight seal for these components.

[0005] The drawback of the above solution is that the structure of the measuring head housing is very complex, and the internal components are almost impossible to replace because the vulnerable analytical electronics and sensors are protected by the final casting or pouring of the measuring head housing. Summary of the Invention

[0006] In contrast, the objective of this invention is to provide a simplified method for manufacturing a measuring head housing of an integrated measuring system for a profile track guide. Another objective of this invention is to provide a cover with a simple structure and a measuring head housing provided with the cover.

[0007] The task is achieved in terms of method by a method for manufacturing an integrated measuring system housing for a linear bearing for a profile track guide, and in terms of the cover for the measuring head housing by a cover blank for the measuring head housing manufactured according to the method, and in terms of the measuring head housing by a measuring head housing having the cover blank.

[0008] The method includes the following steps:

[0009] - Provide cap blanks that are as flat / planar as possible.

[0010] - Apply the medium for material locking to the inside of the cover blank facing the measuring head substrate.

[0011] - Place the measuring head base onto the cover blank.

[0012] - The support arm of the cover blank is bent so that the medium for material locking connection is in contact with the measuring head base in the region of the support arm.

[0013] The medium used for material locking and connection forms an uninterrupted ring, which, due to its orientation on the bending device, cannot flow out of the cover blank.

[0014] The uninterrupted ring extends along the longitudinal end face and bottom edge on the inner side of the cover blank.

[0015] The U-shaped cover blank surrounds the upper edge and two side edges of the end plate of the measuring head base and together with them constitutes the measuring head housing, wherein the cover blank is attached to the main body of the measuring head base.

[0016] As described above, the method according to the invention for manufacturing a measuring head housing for an integrated measuring system, particularly for profile track guides, comprises several steps. First, a cover blank is provided that is as flat as possible. That is, the provided cover blank is, in the broadest sense, a flat material. After the cover blank is positioned, a medium, preferably an adhesive material, for material locking, is applied to the cover blank, for example, in the form of an adhesive strip (Klebstoffraupe). The coating is applied to the inner side of the cover facing the measuring head base. After applying the medium, the measuring head base is placed on the cover blank. Then, the support arm located on the end section of the cover blank is bent such that the medium applied to the cover blank is in contact with the measuring head base. Thus, a U-shaped cover is formed from the cover blank. According to the invention, the adhesive material is positioned such that it is in contact with the end plate and body of the measuring head base. Therefore, the method according to the invention enables the cost-effective manufacture of the measuring head housing, since the integral cover blank is provided as a flat material, is deformed into a cover, and together with the measuring head base, produces a measuring head housing that reliably seals, for example, according to a protection level of IP67.

[0017] The present invention also relates to advantageous improvements and modifications.

[0018] The cover blank can be made from anodized aluminum sheet. Here, prior to anodizing, rolled products, continuously cast components, or other shaped bodies may be involved.

[0019] In a particularly advantageous embodiment of the invention, recesses are provided on the inner side of the cover blank facing the measuring head substrate. These recesses pre-define curved edges / bending lines and facilitate deformation, i.e., bending. The amount of material removed from the recesses is preferably 25% to 75%, particularly 40% to 60%, of the total material thickness of the plate.

[0020] Additional recesses are machined into the cover blank in the region of the support arm. These recesses are designed to accommodate the fixing mechanism. These recesses are preferably non-anodized.

[0021] In a preferred embodiment of the invention, the medium, preferably an adhesive material, applied to the cover blank forms an uninterrupted ring. This ring is particularly preferably configured to be closest to the edge sections of the cover blank, i.e., the longitudinal end faces and bottom edges. For applying the adhesive material, the cover blank is clamped or held approximately horizontally on a bending device. The horizontal orientation of the cover blank prevents the medium from flowing out of it.

[0022] Particularly preferred is that the measuring head base is placed on the cover blank with its upper side facing away from the inside of the cover blank, according to the aforementioned orientation of the cover blank. Therefore, the measuring head base is placed on the cover blank in an inverted position.

[0023] A particularly preferred option is an integrated floor structure.

[0024] This method is particularly effective when fully automated, eliminating the need for manual intervention. Automation is particularly well achieved through the simple structure of the head housing and the correspondingly simple method.

[0025] The aluminum sheet used to manufacture the cover blank is preferably a flat material. Here, the material thickness can be constructed between 1 mm and 4 mm, especially between 1.5 mm and 2.5 mm.

[0026] The cover of the measuring head housing of the integrated measuring system for profile track guides, according to the invention, is in electrical contact with the measuring head base. Particularly preferably, this electrical contact is achieved via a fixing mechanism. Attached Figure Description

[0027] The invention will now be explained in detail with the aid of the accompanying drawings. The drawings show:

[0028] Figure 1 A perspective view of the integrated measurement system is shown.

[0029] Figure 2 Showing the aluminum plate and cover;

[0030] Figure 3 A perspective view of the lid is shown;

[0031] Figure 4 The cover on the bending device is shown in a side view;

[0032] Figure 5 A perspective view of the cover on the bending device is shown;

[0033] Figure 6 A side view of the bending device, cover, and measuring head base is shown;

[0034] Figure 7 The measuring head housing is shown in a side view, with a cover that has been bent into a U-shape. Detailed Implementation

[0035] Figure 1 The perspective view shows an integrated measurement system (IMS) housed in the measuring head housing 1 according to the invention. Since the basic structure or operation of the integrated measurement system is well known in the prior art, it will not be discussed in detail here. More precisely, Figure 1The basic structure of the measuring head housing 1 manufactured according to the method according to the invention is shown. Based on the exploded view selected here, the cover 2 is shown separately from the measuring head base 4. The U-shaped cover 2 has two arms 6, 8, which are integrally constructed with the intermediate member 10 of the cover 2. The arms 6, 8 extend generally vertically from the upper side of the intermediate member 10. The arms 6, 8 and the intermediate member 10 have two common longitudinal end faces 12, 13, wherein the longitudinal end face 13 on the back side is... Figure 1 The middle section is constructed to be invisible relative to the other longitudinal end face 12. Support arms 6 and 8 have bottom edges 14 and 15, respectively, which are shown here. Figure 1 The measuring head base 4 points downwards. An analytical electronics device 16 (shown schematically only here) connected to the sensor 18 is housed within the measuring head base 4. The measuring head base 4 is positioned to be fixed to a guide slide of a linear rolling bearing. The sensor is constructed, for example, according to EP 1965178 B1. The analytical electronics device 16 and the sensor 18 are thus integrated into the measuring head housing 1. Therefore, this is also referred to as an integrated measuring system. In the direction of movement of the scanning device, the main body 22 is defined by end plates 20 and 23, respectively. Not only the main body 22 but also the end plates 20 and 23 have an inner contour 24 configured for movement on a guide rail (not shown here). The measuring head base 4 is positioned opposite the upper side of the intermediate piece 10 of the cover 2. Figure 1 The side pointing downwards is referred to as the lower side 36 below. The U-shaped cover 2 surrounds one upper edge 21 and two side edges 19 of the end plates 20 and 23 respectively, and together with them constitutes the measuring head housing 1. In addition, the cover 2 rests against the body 22.

[0036] Figure 2 A pre-anodized aluminum plate 40 is shown, which serves as a preform for the cover blank, from which the cover 2 of the measuring head housing 4 is manufactured. The cut (Schnitt) 46 shown here should indicate that the pre-anodized aluminum plate 40 can be a flat material, which does not yet correspond in size to the final cover 2. More precisely, the pre-anodized aluminum plate 40 is a significantly larger plate from which individual cover blanks 2 can be separated as needed. This separation can be, for example, by stamping, sawing, cutting, or similar methods. The pre-anodized aluminum plate 40 has recesses 26. These recesses 26 can be introduced into the aluminum plate not only before but also after its anodizing. It is conceivable that the aluminum plate 40 is constructed as a continuous casting, which already integrates the recesses 26. Furthermore, the recesses 26 can be milled from the aluminum plate 40. The recesses 26 form a curved line between the two arms 6, 8 of the cover 2 and the intermediate piece 10, wherein, in Figure 2 The perspective view shows the inner side 11 of the middle part 10 of the cover 2. It can be clearly seen that the longitudinal end faces 12 and 13 are formed by cutouts 46.

[0037] Figure 3 A cover blank 2 is shown, as it is provided in the first method step according to the invention. Here, the cover blank 2 is designed to be as planar as possible. That is, the cover blank 2 is a flat material. The cover blank has the previously shown recess 26, and also has a hole 28. Neither the recess 26 nor the hole 28 alters the substantially flat orientation of the cover blank 2. This flat orientation or planar orientation means that the arms 6, 8 and the middle part 10 of the cover blank 2 (the inner side 11 is visible again here) are constructed in a plane. That is, there is an angle of 0° or 180° between the arms 6, 8 and the middle part of the cover 2.

[0038] exist Figure 4 Another step according to the invention is shown. A cover blank 2 is laid flat on a bending device 32. The upper side 10 of the cover blank 2 lies flat on the bending device 32. The inner side 11 of the cover blank 2 is located on the side of the cover blank 2 facing away from the bending device 32. The bending device 32 has two hinges 34, shown only schematically here. The hinges 34 are slightly offset relative to the recess 26.

[0039] exist Figure 5 In the figure, the cover blank 2 is shown in perspective over the bending device 32. Here is shown the adhesive material 30 applied to the inner side 11 of the cover blank 2 in another step of the method according to the invention. As can be seen from this figure, the adhesive material 30 is constructed such that it forms an uninterrupted ring on the cover blank 2. This uninterrupted ring, i.e., the adhesive material 30, extends along the longitudinal end faces 12, 13 and the bottom edges 14, 15 on the inner side 11 of the cover blank 2. The hole 28 is located outside the ring formed by the adhesive material 30, that is, it is not surrounded by the ring formed by the adhesive material, nor is it touched by the ring. The recess 26 is filled with the adhesive material 30.

[0040] Figure 6 The placement of the measuring head base 4 onto the cover 2 is shown in a very simplified side view. Here, the measuring head base 4 is placed upside down on the inner side 11 of the cover blank 2. That is, the upper edges 21 of the end plates 20, 23 lie flat on the cover blank 2. A vertically downward arrow in the area of ​​the measuring head base 4 indicates the placement direction. When the measuring head base 4 is placed, it is in contact with the adhesive material 30. The bending of the cover blank 2 is indicated by two external arrows. The hinge 34 of the bending device 32 causes the arms 6, 8 to bend along the recess 26, which serves as the rated bending portion, toward the measuring head base 4.

[0041] Figure 7A side view of the measuring head housing 1 manufactured according to the method of the invention is shown. The cover 2 is bent into its end position by a bending device 32 and now exists in its final shape as a U-shaped cover 2. That is, the arms 6, 8 extend from the middle part 10 of the cover 2 at approximately right angles. Here, the inner sides of the arms 6, 8 are abutted against the measuring head base 4 by an adhesive material 30. Except for the end plates 20, 23 and the lower side 36 of the measuring head base 4, the cover 2 surrounds all the previously open sides of the measuring head base 4. The cover 2 fluid-tightly surrounds the measuring head base 4 by the adhesive material 30 applied as a surrounding ring. In order to overcome the auffed-up bending of the arms 6, 8 after the bending device 32 is opened, a fixing mechanism 38 is also introduced into the measuring head base 4 through the hole 28 of the cover 2 in the bending device 32. These fixing mechanisms 38 can be designed, for example, as countersunk screws that do not protrude outward beyond the cover 2, preventing the arms 6, 8 from springing back and simultaneously creating electrical contact between the measuring head base 4 and the cover 2.

[0042] This invention discloses a method for manufacturing a measuring head housing for an integrated measuring system of linear bearings used in profile track guides, wherein a cover blank made of flat material is provided with an adhesive material layer and bent into a cover. This invention also discloses a cover for the measuring head housing and a measuring head housing.

[0043] List of reference numerals

[0044] 1. Measuring head housing

[0045] 2 lids

[0046] 4. Measuring head base

[0047] 6 arms

[0048] 8 arms

[0049] 10 Middleware

[0050] 11. Inner side

[0051] 12 Longitudinal end face

[0052] 13. Longitudinal end face

[0053] 14 Bottom edge

[0054] 15 Bottom edge

[0055] 16. Analyze electronic devices

[0056] 18 sensors

[0057] 19 Side edges

[0058] 20 end plate

[0059] 21. Upper edge

[0060] 22 Main Body

[0061] 23 end plate

[0062] 24. The inner contour of the main body

[0063] 26 recess

[0064] 28 holes

[0065] 30 Adhesive materials

[0066] 32 Bending device

[0067] 34 Hinges

[0068] 36. Measurement of the lower side of the head base

[0069] 38 Fixed mechanism

[0070] 40 Pre-anodized aluminum plate

[0071] 46. ​​Incision.

Claims

1. A method for manufacturing a measuring head housing (1) of an integrated measuring system for a linear bearing used in a profile track guide, the method comprising the following steps: - Provide a cover blank that is as flat / planar as possible (2). - Apply the medium for material locking connection to the inner side (11) of the cover blank (2) facing the measuring head base (4). - Place the measuring head base (4) onto the cover blank (2), - Bend the arms (6, 8) of the cover blank (2) so that the medium (30) for material locking connection is in contact with the measuring head base (4) in the region of the arms (6, 8). The medium (30) used for material locking connection forms an uninterrupted ring, which cannot flow out of the cover blank (2) due to its orientation on the bending device (32). The uninterrupted ring extends along the longitudinal end faces (12, 13) and bottom edges (14, 15) on the inner side (11) of the cover blank (2). The U-shaped cover blank (2) surrounds the upper edge (21) and two side edges (19) of the end plates (20, 23) of the measuring head base (4) and together with them constitutes the measuring head housing (1), wherein the cover blank (2) is attached to the main body (22) of the measuring head base (4).

2. The method according to claim 1, characterized in that, The cover blank (2) is made of a pre-anodized aluminum plate (40).

3. The method according to claim 1 or 2, characterized in that, A recess (26) is provided on the inner side (11) of the cover blank (2) facing the measuring head base (4).

4. The method according to claim 1 or 2, characterized in that, Holes (28) for accommodating fixing mechanisms (38) are provided on both sides in the region of the support arms (6, 8).

5. The method according to claim 1 or 2, characterized in that, The medium (30) used for material locking connection is an adhesive material.

6. The method according to claim 1 or 2, characterized in that, The measuring head base (4) is placed upside down on the cover blank (2).

7. The method according to claim 1 or 2, characterized in that, The cover blank (2) is constructed as an integral unit.

8. The method according to claim 1 or 2, characterized in that, The cover blank (2) is made of a flat material with a material thickness of 1 mm to 4 mm.

9. A cover blank (2) for use in a measuring head housing (1) manufactured according to any one of claims 1 to 8.

10. The cover blank (2) according to claim 9, characterized in that, The cover blank is in electrical contact with the measuring head base (4).

11. A measuring head housing (1) having a cover blank (2) according to claim 9 or 10.

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