Grinding gauge with settable angle

Abstract

A grinding gauge with a settable angle. This invention relates to a grinding gauge (1), particularly for holding a cutting tool with inserts to be ground or polished, and for positioning the insert at at least one positioning angle (α) relative to the grinding and / or polishing tool, such as a roller grinder, wherein the grinding gauge (1) has at least two portions (2, 3) that are adjustable relative to each other to set different positioning angles (α). To improve the compactness of the grinding gauge, the two portions (2, 3) are adjustable relative to each other along a curved path.

Description

Technical Field

[0001] The present invention relates to grinding gauges, particularly for holding cutting tools with inserts to be ground or polished, and for positioning the inserts at at least one positioning angle relative to the grinding and / or polishing tool, such as a roller grinder. Background Technology

[0002] The grinding gauge of this type according to the preamble of claim 1 is known from DE 10 2020 123 503 A1. Roller grinding machines are known, for example, from EP 3 278 928 A.

[0003] This type of grinding gauge uses magnetic force to hold a metal, which is then magnetizable, cutting insert, and is also known as a magnetic grinding gauge. However, the principle of the invention is essentially applicable to all types of grinding gauges, as long as the cutting tool insert to be ground or polished can be positioned at a preset positioning angle relative to the grinding and / or polishing tool.

[0004] Grinding gauges known from DE 10 2020 123 503 A1 comprise at least two parts that are adjustable relative to each other to set different positioning angles. The adjustable parts of the grinding gauge are adjustable at right angles to each other, whereby these parts protrude in directions perpendicular to each other and impede the compact shape of the grinding gauge. Summary of the Invention

[0005] Therefore, in order to reduce the space requirements of grinding gauges and simplify their operation, the object of this invention is to provide a compact grinding gauge.

[0006] To achieve the aforementioned objective, the present invention provides a grinding gauge according to claim 1. The grinding gauge according to the invention is particularly used for holding a cutting tool with inserts to be ground or polished, and for positioning the inserts at at least one positioning angle relative to the grinding and / or polishing tool (such as a roller grinder), wherein the grinding gauge has at least two portions that are adjustable relative to each other. According to the invention, the two portions are adjustable relative to each other along a curved track. The two portions are capable of having complementary shapes along the curved track, such that one portion at least segmentally surrounds or even encloses the other portion. Ultimately, the adjustability of the two portions along the curved track contributes to the compactness of the grinding gauge.

[0007] Advantageously, the curved track lies in a plane perpendicular to the orientation of the grinding gauge's mounting plane. Thus, the grinding gauge is configured like a seesaw. Furthermore, this improves the compactness of the grinding gauge within the plane perpendicular to its mounting plane. In other words, it allows the grinding gauge to maintain a low height.

[0008] What is significant is that the curved track is a section of the circular track. This allows for different positioning angles to be achieved at regular intervals.

[0009] What proves helpful is that the adjustable parts can be gradually adjusted between different positions. This improves the user-friendliness of the grinding gauge.

[0010] What is useful is that the adjustable parts can be locked in different, preferably three, positions, particularly in a force-fit and / or form-fit, preferably snap-locking manner. This ensures that the set positioning angle remains unchanged even when high forces are applied to the grinding gauge (e.g., during the grinding or polishing of the cutting tool). Furthermore, this guarantees the repeatability of the grinding or polishing results.

[0011] What proves to be practical is that the grinding gauge has a guide element to adjust the adjustable portions relative to each other between different positions during the guided movement. This further improves the user-friendliness of the grinding gauge according to the invention. It eliminates or at least increases the difficulty of erroneous operation of the grinding gauge.

[0012] What is useful is that the guide is firmly connected to one of the adjustable parts and has at least one guide groove, and the other adjustable part includes a guide element, preferably a guide pin, which engages in the guide groove, preferably forming a transition fit. Thus, the adjustable parts can be connected to each other such that they have only the degrees of freedom of movement allowed by the guide. This clearly defines the relative movement between the adjustable parts.

[0013] Advantageously, the adjustable parts can be elastically pre-tightened against each other, preferably pre-tightened into a locked state, wherein the locked state is preferably releaseable by reducing or canceling the elastic pre-tightening force, allowing these parts to adjust relative to each other. This reduces the risk of the adjustable parts being unintentionally adjusted and thus changing the positioning angle.

[0014] It is meaningful that the grinding gauge has at least one spring-driven element for generating an elastic preload between adjustable parts, wherein the spring-driven element is preferably connected to one of the adjustable parts and engages in a locking recess in another adjustable part to create a locked state. The spring-driven element provides a simple and robust component for generating an elastic preload between adjustable parts.

[0015] Ideally, at least one of the adjustable parts should have an actuating section, which the user can preferably manually, particularly by applying pressure or tension, to adjust these parts relative to each other. Providing an actuating section facilitates intuitive operation of the grinding gauge by the user. Furthermore, the actuating section simplifies the adjustment of these parts relative to each other.

[0016] What proves meaningful is that one part of the adjustable portions can be accommodated in the opening of the other part, wherein the two portions preferably occupy a position in which the one portion completely closes the opening of the other part, and / or occupy a position in which the one portion protrudes at least segmentally from the opening of the other part. This configuration also includes the ability of the other portion of the adjustable portions to form a housing, wherein its opening is located on the housing side, preferably on the flat underside of the housing, wherein the one portion is flush with or coplanar with the housing side having the opening in a certain position. As a result, the compactness of the grinding gauge is improved.

[0017] It is useful that the grinding gauge has at least one first leg and at least one second leg, the at least one first leg being attached to one of the adjustable portions relative to each other, and the at least one second leg being attached to the other adjustable portion. This avoids static indeterminacy and thus avoids wobbling of the grinding gauge.

[0018] One proven advantage is that the grinding gauge has a scale for reading the set positioning angle in degrees. This allows the user to easily identify which positioning angle is currently set, thus improving the user-friendliness of the grinding gauge.

[0019] What proves practical is that multiple degrees corresponding to the settable positioning angle are attached, preferably printed, on one of the adjustable portions, and the other adjustable portion includes at least one opening through which the corresponding degree of the set positioning angle can be read. This allows the scale to be easily integrated into the adjustable portions without the need for additional components.

[0020] It is meaningful that at least one of the adjustable parts is constructed as a body having at least one contact surface, preferably two contact surfaces, at which the cutting tool can be held in contact as specified, wherein the two contact surfaces preferably form different angles with the mounting plane of the grinding gauge in each position of the two adjustable parts. This increases the number of different positioning angles and expands the functionality of the grinding gauge.

[0021] Terms and Definitions

[0022] The positioning angle within the scope of this invention refers to the angle maintained by the cutting tool, particularly the blade, of the grinding tool to be ground or polished relative to a plane aligned perpendicular to the base (placement plane), particularly the grinding plane, when the grinding gauge according to the invention is applied as specified. In the specified application, the grinding gauge is arranged on a preferably flat, preferably horizontal base (placement plane), particularly preferably on the same base on which the roller grinder is moved. Furthermore, the (usually magnetic) blade (preferably magnetically) remains in contact with the contact surface of the grinding gauge, such that the blade is parallel to and aligned with the contact surface. Therefore, the positioning angle is generally consistent with the grinding angle. Attached Figure Description

[0023] The attached diagram shows:

[0024] Figure 1 : Perspective view of the upper side of grinding gauge 1.

[0025] Figure 2 : A perspective view of the lower side of the grinding gauge 1, wherein the parts that can be adjusted relative to each other, namely the slider 3, are in a first position relative to the base 2, corresponding to the reference position of the grinding gauge 1.

[0026] Figure 3 : A perspective view of the lower side of the grinding gauge 1, wherein the parts that can be adjusted relative to each other, namely the slider 3, are in a second position relative to the base 2, corresponding to the middle position of the grinding gauge 1.

[0027] Figure 4 : A perspective view of the lower side of the grinding gauge 1, wherein the parts that can be adjusted relative to each other, i.e., the slider 3 relative to the base 2, are in a second position corresponding to the maximum position of the grinding gauge 1.

[0028] Figure 5 : An exploded view of the parts that can be adjusted relative to each other, namely base 2 and slider 3.

[0029] Figure 6 : Exploded view of slider 3 and guide 4 from the first perspective.

[0030] Figure 7 : Exploded view of slider 3 and guide 4 from a second perspective.

[0031] Figure 8 : Exploded view of grinding gauge 1 from the first perspective.

[0032] Figure 9 : Exploded view of grinding gauge 1 from a second perspective.

[0033] Figure 10 : Side section view of grinding gauge 1 in the reference position.

[0034] Figure 11 : Side section view of grinding gauge 1 in the maximum position. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the grinding gauge 1 includes an approximately cuboid-shaped base 2 having two opposing sides inclined toward the mounting plane AE of the grinding gauge 1, at which resilient contact elements 8 are attached respectively. Therefore, the base 2 has a trapezoidal cross-section in a plane perpendicular to the cross-sectional plane intersecting the contact elements 8. The base 2 can be made of wood and / or metal and / or plastic. Preferably, the base 2 is a die-casting.

[0037] Each resilient contact element 8 is configured as the contact surface for the cutting tool's insert. When using the grinding gauge 1 as specified, the insert passes through one or more magnets 9 located behind the corresponding contact element 8 (not in...). Figure 1 As shown in the image, see below instead of this. Figure 8 and 9 It attracts and comes into contact with the contact element in a planar manner. The contact element is an elastomer with high adhesion.

[0038] like Figures 2 to 4 As shown, the base 2 has an opening 2a in which a slider 3 is accommodated. The slider 3 can be adjusted relative to the base 2 along a curved track by applying pressure or tension to the slider 3. For this purpose, the slider 3 has an actuating section 3a in the form of a rib on its underside. The user can manually, especially with the thumb, apply pressure or tension to the actuating section 3a, thereby adjusting the slider 3 relative to the base 2.

[0039] The slider 3 can be gradually adjusted relative to the base 2, allowing it to occupy multiple defined positions. Figure 2 The diagram shows the first position of slider 3, in which slider 3 completely closes the opening 2a of base 2. That is, the lower side of slider 3 is flush with the lower side of base 2 in the first position. The first position of slider 3 relative to base 2 corresponds to the reference position of grinding gauge 1. Figure 3 The diagram shows a second position of slider 3 relative to base 2, in which one end of slider 3 protrudes from the opening 2a of base 2, i.e., protrudes beyond the lower side of base 2, and the opposite end of slider 3 extends into the opening 2a of base 2a. This second position of slider 3 relative to base 2 corresponds to the middle position of grinding gauge 1. Figure 3Finally, a third position of slider 3 relative to base 2 is shown, in which the end of slider 3 is larger than in... Figure 2 It protrudes further from the opening 2a of the base 2, and the opposite ends of the slider 3 are more than in Figure 2 The slider 3 extends further into the opening 2a of the base 2a. The third position of the slider 3 relative to the base 2 corresponds to the maximum position of the grinding gauge 1. The slider 3 can be made of wood and / or metal and / or plastic. In particular, the slider 3 can be made of the same material as the base 2 or of other materials. Preferably, the slider 3 is a die-cast part.

[0040] If the grinding gauge 1 is positioned with its lower side on the mounting plane AE, which is preferably constructed as a horizontal base, the base 2 can be oriented relative to the mounting plane AE in a total of three positions according to the above configuration. Figure 10 The side cross-sectional view of the grinding gauge 1 in the reference position, i.e., in the first position of the slider 3 relative to the base 2, is shown. Figure 11 The diagram shows a side cross-sectional view of the grinding gauge 1 in its maximum position, i.e., in the third position of the slider 3 relative to the base 2. Based on the fact that the two opposing contact sides of the base 2 (each with an elastic contact element 8 attached) form different angles with the plane of the lower side of the base 2, the described grinding gauge 1 can provide a total of six different positioning angles (grinding angles) α. In the described embodiment, the possible positioning angles α are 10°, 13°, 15°, 20°, 22°, and 25°. Here, the grinding gauge 1 is configured such that, at the opposing contact sides of the base 2, positioning angles α of 15° and 20° are formed in the reference position, 13° and 22° in the intermediate position, and 10° and 25° in the maximum position.

[0041] To position the grinding gauge 1 on the mounting plane AE, a support leg 7 is attached to the underside of the grinding gauge 1. The support leg 7 is constructed as an elongated elastic element, with one leg 7 attached to the underside end of the base 2 and the other leg 7 attached to the opposite underside end of the slider 3. The support leg 7 is bonded to either the base 2 or the slider 3. Due to its elasticity, the support leg 7 prevents the grinding gauge 1 from sliding during grinding or polishing.

[0042] The following is based on Figures 5 to 9 Describe the internal structure of the grinding gauge 1 and the functional principle of the adjustability of the slider 3 relative to the base 2.

[0043] The slider 3 is connected to the base 2 via a guide 4. The guide 4 is an elongated element made of plastic. The guide 4 can be, in particular, an injection-molded part. The guide 4 is fastened to the opening 2a of the base 2 by means of a fastening mechanism 10 (e.g., a screw) using form and / or force engagement. The guide 4 can be pressed, for example, against a mating surface provided in the opening 2a by means of a screw. For this purpose, the screw is screwed into the base 2 and pressed obliquely against one side of the guide 4. The screw can be fixed in the base 2 by means of an adhesive.

[0044] The guide member 4 includes two separate guide grooves 4a, each constructed as an elongated hole extending along a curved track, particularly a circular track section. The two guide grooves 4a are arranged one behind the other on the curved track. The slider 3a includes a base plate (one side of which forms the underside of the slider 3) and two walls 3b arranged vertically and opposite to each other on the other side of the base plate. The walls 3b are spaced apart from each other, allowing the guide member 4 to be accommodated between them. Furthermore, each wall 3b has two through-holes. With the slider 3 mounted in the base 2, guide elements 5, particularly guide pins, are inserted into the through-holes of the walls 3b, wherein each guide element 5 also protrudes through a corresponding guide groove 4a of the guide member 4 located between the walls 3b. Therefore, the slider 3 can be adjusted along the guide member 4 during guided movement because the guide elements 5 connected to the slider 3 are guided by the guide grooves 4a of the guide member 4. For this purpose, a transition fit is preferably formed between each guide element 5 and the corresponding guide groove 4a.

[0045] The guide member 4 has three locking recesses 4b with curved profiles on its surface extending parallel to the guide groove 4a and pointing towards the base plate of the slider 3. On the other side, two side-by-side spring pushers 6 are housed in the base plate of the slider 3, the ball heads of which protrude over the base plate of the slider 3. The ball heads of the spring pushers 6 are preloaded against the guide member 4 and engage in the corresponding locking recesses 4b in the first, second, and third positions of the slider 3 relative to the base 2, thereby locking the slider 3 in the set position relative to the base 2. When a pressure or tension exceeding a certain limit is applied to the slider 3 in an adjustable direction, the locking is released because the ball heads of the spring pushers 6 slide on the curved profile of the locking recesses 4b and are pushed back against the preload force until they finally leave the locking recesses 4b and engage in another locking recess 4b.

[0046] In the reference and maximum positions of the grinding gauge 1, adjustment is only possible in one direction. That is, in both positions, the guide groove 4a acts as an end stop for the guide element 5. In other words, in both positions, adjustment of the slider 3 relative to the base 2 in one direction is prevented (see...). Figure 10 and 11 ).

[0047] The grinding gauge 1 has graduations 11 for reading the set positioning angle α. For this purpose, multiple degrees corresponding to the settable positioning angle α are printed or engraved on the following surface of the guide 4, in which a locking recess 4b is also introduced. In a specific embodiment, three degrees (10°, 13°, 15°) are provided on one side of the locking recess 4b on this surface, and three degrees (20°, 22°, 25°) are provided on the other side of the locking recess 4b. The slider 3 has two openings 3c in its base plate, the openings being spaced apart from each other such that one opening of 3c is located near the contact side of the base 2, and the other opening of 3c is located near the other contact side of the base 2. The positioning angle α set at the corresponding contact side of the base 2 by the position of the slider 3 relative to the base 2 is displayed in the opening 3c located near the relevant contact side.

[0048] In addition, from Figure 8 and 9 As can be seen, the elastic contact element 8 is attached to the corresponding contact side of the base 2 via the carrier 12. For this purpose, the elastic contact element 8 is fastened to one side of the carrier 12, and the other side of the carrier 12 is connected to the base 2. For this purpose, the carrier 12 includes two connecting sections configured as cylindrical sleeves and pressed into receiving openings 2b in the contact side of the base 2. To improve connection strength, the connecting sections can have teeth on their outer periphery. The inner contour of the connecting sections serves as a magnet receiving portion. That is, one or more magnets 9 can be accommodated in the carrier 12, which generate the magnetic force required to attract the blade to the contact surface. With this configuration, the magnets 9 are positioned in the receiving openings 2b of the base 2 when the carrier 12 is mounted.

[0049] In the described embodiment, the grinding gauge 1 can occupy three defined positions (reference position, intermediate position, and maximum position), wherein, due to the different inclinations of the contact side of the base 2 relative to the lower side of the base 2, a total of six different positioning angles can be achieved. It goes without saying that the present invention is not limited to the three defined positions of the grinding gauge 1, and the grinding gauge 1 can also be configured such that it can occupy only two or more defined positions.

[0050] List of reference numerals

[0051] 1 Grinding gauge

[0052] 2. Matrix

[0053] 2a Opening

[0054] 2b Carrier Reception Section

[0055] 3 sliders

[0056] 3a Actuating section

[0057] 3b wall

[0058] 3c opening

[0059] 4. Guide components

[0060] 4a Guide groove

[0061] 4b Locking recess

[0062] 5. Guide elements (guide pins)

[0063] 6. Spring thrust component

[0064] 7 legs

[0065] 8. Flexible contact elements

[0066] 9 Magnets

[0067] 10 Fastening mechanism (screws)

[0068] 11 Scale

[0069] 12 carriers

[0070] AE grinding gauge placement plane

Claims

1. A grinding gauge (1), particularly for holding a cutting tool with an insert to be ground or polished, and for positioning the insert at at least one positioning angle (α) relative to the grinding and / or polishing tool, such as a roller grinder, wherein, The grinding gauge (1) has at least two parts (2, 3) that are adjustable relative to each other to set different positioning angles (a), characterized in that the two parts (2, 3) are adjustable relative to each other along a curved track.

2. The grinding gauge (1) according to the preceding claim, characterized in that, The curved track is located in a plane perpendicular to the orientation of the placement plane (AE) of the grinding gauge (1).

3. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The curved track is a section of the circular track.

4. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The adjustable parts (2, 3) relative to each other can be gradually adjusted between different positions.

5. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The adjustable portions (2, 3) can be locked in different, preferably three, positions, particularly in a force-fit and / or shape-fit, preferably snap-fit, manner.

6. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The grinding gauge (1) has a guide (4) for adjusting the adjustable portions (2, 3) relative to each other between different positions during the guided motion.

7. The grinding gauge (1) according to the preceding claim, characterized in that, The guide (4) is securely connected to one of the adjustable portions (2, 3) and has at least one guide groove (4a), and the other of the adjustable portions (2, 3) includes a guide element (5), preferably a guide pin, which engages in the guide groove (4a), preferably forming a transition fit.

8. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The adjustable portions (2, 3) are elastically abutted against each other and pre-tightened, preferably pre-tightened into a locked state, wherein the locked state is preferably releaseable by reducing or canceling the elastic pre-tightening force, so that the portions (2, 3) can be adjusted relative to each other.

9. The grinding gauge (1) according to the preceding claim, characterized in that, The grinding gauge (1) has at least one spring thrust member (6) for generating an elastic preload between the adjustable portions (2, 3) relative to each other, wherein the spring thrust member (6) is preferably connected to one of the adjustable portions (2, 3) and engaged in a locking recess (4b) in the other adjustable portion (2, 3) to create a locking state.

10. The grinding gauge (1) according to any one of the preceding claims, characterized in that, At least one of the adjustable parts (2, 3) has an actuating section (3a) that the user can preferably manually, in particular by applying pressure or tension, to adjust the parts (2, 3) relative to each other.

11. The grinding gauge (1) according to any one of the preceding claims, characterized in that, One of the adjustable portions (2, 3) is accommodated in the opening (2a) of the other portion, wherein the two portions (2, 3) are preferably able to occupy a position in which the one portion (3) completely closes the opening (2a) of the other portion (2), and / or can occupy a position in which the one portion (3) protrudes at least segmentally from the opening (2a) of the other portion (2).

12. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The grinding gauge (1) has at least one first foot (7) and at least one second foot (7), the at least one first foot being attached to one of the adjustable portions (2, 3) relative to each other, and the at least one second foot being attached to the other portion of the adjustable portions (2, 3) relative to each other.

13. The grinding gauge (1) according to any one of the preceding claims, characterized in that, The grinding gauge (1) has a scale (11) for reading the degree of the set positioning angle (α).

14. The grinding gauge (1) according to the preceding claim, characterized in that, A plurality of degrees corresponding to the settable positioning angle (α) are attached, preferably printed on one of the adjustable portions (2, 3), and the other portion of the adjustable portions (2, 3) includes at least one opening (3c) through which the corresponding degree of the set positioning angle (α) can be read.

15. The grinding gauge (1) according to any one of the preceding claims, characterized in that, At least one of the adjustable portions (2, 3) is constructed as a body (2) having at least one contact surface, preferably two contact surfaces, at which the blade (2a) is held in contact as specified, wherein the two contact surfaces preferably form different angles with the mounting plane (AE) of the grinding gauge (1) at each of the two adjustable portions (2, 3).

Images