A top hammer measuring device

Abstract

This utility model relates to the field of inspection after machining of cemented carbide, specifically a top hammer measuring device, including a digital display scale and a measuring dial indicator. The digital display scale includes a slide rail, a first slider, and a second slider, which are slidably connected to the slide rail. A first tilting block is fixed to the bottom of the first slider, and a second tilting block is fixed to the bottom of the second slider. The tilting angles of the first and second tilting blocks are opposite to each other. The top hammer workpiece is clamped between the tilting angles of the first and second tilting blocks for measurement, and the tilting angles match the inclined plane of the upper part of the top hammer workpiece. The measuring dial indicator is fixed on the first slider and located between the first and second tilting blocks. The probe of the measuring dial indicator protrudes from the lower surface of the first slider and is used to contact the upper surface of the top hammer workpiece. The device can detect the dimensional accuracy of the top hammer during the grinding process of the top hammer workpiece and can be measured directly on the machine tool without repeatedly disassembling and reassembling the top hammer workpiece.

Description

Technical Field

[0001] This utility model relates to the field of inspection after machining of cemented carbide, specifically a top hammer measuring device. Background Technology

[0002] Currently, the grinding stage of the top hammer product processing involves machining the outer diameter on an external cylindrical grinding machine and then grinding nine planes on a surface grinding machine. During this grinding stage, the dimensions of the workpiece ends must be repeatedly measured to ensure they are within tolerance. Due to the special shape of the workpiece, ordinary standard measuring tools cannot be used. Therefore, the workpiece must be repeatedly removed from the machine tool and measured on a high-performance image measuring instrument to record the remaining dimensions before being mounted on the surface grinding machine for grinding. The workpiece is heavy (around 100 kg) and requires high dimensional accuracy. Repeated disassembly and transportation can easily cause damage to the workpiece and operators, wasting a significant amount of effective grinding time and increasing the labor intensity of the workers. Summary of the Invention

[0003] In view of the shortcomings of existing technologies, the purpose of this utility model is to achieve the goal of direct measurement on machine tools without disassembly and assembly, and to achieve the accuracy of image mapping instruments by adopting a specially designed measuring device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is to design a top hammer measuring device, including a digital display ruler and a measuring dial indicator. The digital display ruler includes a slide rail, a first slider, and a second slider. The first slider and the second slider are slidably connected to the slide rail. A first tilting block is fixed to the bottom of the first slider, and a second tilting block is fixed to the bottom of the second slider. The tilting angles of the first tilting block and the second tilting block are opposite to each other. The top hammer workpiece is clamped between the tilting angles of the first tilting block and the second tilting block for measurement. The tilting angle matches the inclined plane of the upper part of the top hammer workpiece. The measuring dial indicator is fixed on the first slider and is located between the first tilting block and the second tilting block. The probe of the measuring dial indicator protrudes from the lower surface of the first slider and is used to contact the upper surface of the top hammer workpiece.

[0005] Furthermore, the digital display ruler also includes a linear adjustment mechanism, which includes a threaded fine-tuning screw and an adjustment knob. The internal thread of the center hole of the adjustment knob engages with the external thread of the fine-tuning screw and rotates relative to it. The fine-tuning screw and the first slider are connected and fixed by a set screw and thread. Rotating the adjustment knob drives the fine-tuning screw and the first slider to slide on the slide rail.

[0006] Furthermore, the adjustment knob of the linear adjustment mechanism is rotatably mounted inside the fine-tuning seat, which restricts the displacement of the adjustment knob, and the fine-tuning seat is fixedly connected to the slide rail.

[0007] Furthermore, the digital ruler also includes a digital display dial, which is disposed on the first slider and is used to display the displacement of the first slider.

[0008] Furthermore, the digital display dial is positioned above the slide rail and can detect the displacement of the first slider relative to the slide rail. The first slider is connected to the pressure cover by bolts, and the pressure cover connects the first slider and the digital display dial as one unit.

[0009] Furthermore, the top hammer measuring device also includes a gauge for calibrating the measuring device; two inclined standard measuring surfaces are provided on the top two sides of the gauge, and the inclination angle of the standard measuring surface of the gauge is the same as that of the upper inclined plane of the standard size top hammer. The gauge with a known size is clamped between the inclination angle of the first inclination block and the inclination angle of the second inclination block, and the position of the first slider is adjusted until the upper surface of the gauge contacts the measuring dial indicator, causing the measuring dial indicator pointer to deflect. At this time, the zero position of the digital display scale is the actual size of the gauge.

[0010] Furthermore, the first tilting gauge block is embedded in the mounting groove at the bottom of the first slider, and the first tilting gauge block is connected to the first slider by fixing screws; the second tilting gauge block is embedded in the mounting groove at the bottom of the second slider, and the second tilting gauge block is connected to the second slider by fixing screws.

[0011] Furthermore, the measuring instrument is a dial indicator, and the measuring instrument is fixed to the first slider by a measuring instrument fixing set screw.

[0012] Furthermore, the end of the slide rail near the first slider is fixed inside the fine-tuning seat, and the locking nut of the fine-tuning seat passes through the fine-tuning seat and abuts against the side surface of the slide rail; the end of the slide rail near the first slider is provided with a fine-tuning back stop, and the fine-tuning back stop fixing bolt passes through the fine-tuning back stop and abuts against the end face of the slide rail. The function of the fine-tuning back stop is to prevent the fine-tuning seat from sliding out of the guide rail when it is not locked.

[0013] The beneficial effects of this utility model are as follows: The measuring device of this utility model combines a digital display ruler and a dial indicator to form a high-precision measuring ruler, which can detect the dimensional accuracy of the top hammer during the grinding process of the top hammer workpiece. The measuring device is small and accurate, and can directly measure the top hammer workpiece on the machine tool without repeatedly disassembling and assembling the top hammer workpiece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the top hammer structure; Figure 2 This is a front view of the measuring device structure; Figure 3 This is a top view of the measuring device; Figure 4 This is a schematic diagram of the bottom structure of the measuring device; Figure 5 This is a schematic diagram of the gauge structure; Figure 6 This is a schematic diagram showing the assembly and calibration of the measuring device and gauges. Figure 7 A schematic diagram of a measuring device inspecting a workpiece with a top hammer; In the picture: 01. Top hammer workpiece; 011. Top plane; 012. First inclined plane; 013. Second inclined plane; 1. First slider, 101. First tilt gauge block, 2. Second slider, 201. Second tilt gauge block, 3. Slide rail, 4. Digital display dial, 5. Fine adjustment screw, 6. Adjustment knob, 7. Fine adjustment seat, 8. Measuring gauge, 801. Measuring gauge probe, 9. Gauge, 901. Standard measuring surface, 10. Pressure cap, 11. Second slider fixing screw, 12. Fine adjustment seat cover, 13. Fine adjustment seat locking nut, 14. Fine adjustment back stop, 15. Fine adjustment back stop fixing bolt, 16. Measuring gauge fixing set screw, 17. Fine adjustment screw fixing set screw, 18. Workpiece mounting fixing screw. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] See appendix Figure 1 The top hammer workpiece 01 includes a top plane 011, four first inclined planes 012 below, and four second inclined planes 013 below. Therefore, it is particularly important to control the size of the first inclined plane 012 that connects the top plane 011 and the second inclined plane 013. Based on the special structure of the top hammer, this utility model detects the size of the first inclined plane.

[0017] See appendix Figure 2-4The top hammer measuring device includes a digital scale and a measuring dial; the digital scale includes a slide rail 3, a first slider 1, a second slider 2, a linear adjustment mechanism, and a digital dial 4. The first slider 1 and the second slider 2 are slidably connected to the slide rail 3. A first tilting block 101 is fixed to the bottom of the first slider 1, and a second tilting block 201 is fixed to the bottom of the second slider 2. The tilting angles of the first tilting block 101 and the second tilting block 201 are opposite to each other. The top hammer workpiece 01 is clamped between the tilting angles of the first tilting block 101 and the second tilting block 201 for measurement. The tilting angle matches the first inclined plane 012 on the upper part of the top hammer workpiece. The linear adjustment mechanism includes a fine-tuning screw 5, an adjustment knob 6, and a fine-tuning seat. 7. The fine-tuning screw 5 and the first slider 1 are connected and fixed by the fine-tuning screw fixing screw 17 and threaded connection. Then, the internal thread of the center hole of the adjusting knob 6 engages with the thread of the fine-tuning screw 5 and rotates relative to it. The adjusting knob 6 is rotatably set on the fine-tuning seat 7. By rotating the adjusting knob, the fine-tuning screw 5 and the first slider 1 are driven to slide on the slide rail 3. The measuring gauge 8 is fixed on the first slider 1 and is located between the first tilting block 101 and the second tilting block 201. The probe 801 of the measuring gauge 8 protrudes from the lower surface of the first slider 1 and is used to contact the top plane 011 of the top hammer workpiece 01. The digital display dial 4 is set on the first slider 1 and is used to display the displacement of the first slider 1. When detecting the top hammer workpiece 01, the second slider 2 is fixed in position, and the first slider 1 slides on the slide rail 3, so that the top hammer workpiece 01 is sandwiched between the tilt angle of the first tilting block 101 and the tilt angle of the second tilting block 201. The measuring gauge 8 displays the measured value of the top hammer workpiece size.

[0018] The first inclination gauge block 101 and the second inclination gauge block 201 are tooling parts, which are replaced according to the different angles of the workpiece being hammered. Currently, there are three commonly used angles in my country. When replacing them, simply remove the workpiece mounting fixing screw 18 from the bottom of the gauge.

[0019] Furthermore, the digital display dial 4 is positioned above the slide rail 3 and can detect the displacement of the first slider 1 relative to the slide rail 3. The first slider 1 is connected to the pressure cover 10 by bolts, and the pressure cover 10 connects the first slider 1 and the digital display dial 4 as a whole. The digital display dial 4 displays the displacement distance of the first slider 1 using existing technology (relative movement of the moving and fixed grids), such as using a displacement sensor to detect the displacement distance, converting the mechanical displacement into an electrical signal, and then processing it through digital circuitry to display the measured value on the digital display dial. The digital display dial has a zeroing key, an on / off key, and a unit switching key. The displayed value on the digital display dial 4 can be an absolute value or a relative value.

[0020] See appendix Figure 5-6The top hammer measuring device also includes a gauge 9 for calibrating the measuring device. The gauge 9 is a standard part, and two inclined standard measuring surfaces 901 are provided on the top two sides of the gauge 9. The standard measuring surfaces 901 of the gauge have the same inclination angle as the first inclined plane 012 of the standard-sized top hammer. The standard part gauge 9 with known size is clamped between the inclination angle of the first inclination block 101 and the inclination angle of the second inclination block 201. The position of the first slider 1 is adjusted until the first inclination block 101 on the slider 1 is completely in contact with the inclination angle 901 surface of the gauge. Since the two contact surfaces have matching inclination angles, when the adjustment knob 6 is adjusted after they are in contact, the slider 1 will be separated from the top plane 011 of the top hammer, causing a slight change in the contact between the upper surface of the gauge 9 and the measuring gauge 8, causing the pointer of the measuring gauge 8 to deflect. At this time, the value of the digital display is cleared to zero. The current zero position of the digital display ruler is the actual size of the gauge.

[0021] Furthermore, the second slider 2 and the slide rail 3 are fixed in relative positions by the second slider fixing screw 11. This measuring tool has a measuring range of 55-88mm, covering the top plane 011 dimensions of all currently produced large-size top hammers.

[0022] Furthermore, if it is necessary to increase the length of the slide rail 3 to produce larger top hammer products in the future, when measuring the size of the small top hammer, the fine-adjustment seat locking nut 13 should be loosened, and the sliding fine-adjustment seat 7 should be moved to drive the adjustment knob 6, the fine-adjustment screw 5 and the slider 1 until they are close to the inclined surface 012 or 013 of the small top hammer. Then the fine-adjustment seat locking nut 13 should be tightened before the above-mentioned verification work is carried out normally through the small specification gauge.

[0023] Furthermore, the first tilting gauge block 101 is embedded in the mounting groove at the bottom of the first slider 1, and the first tilting gauge block 101 is connected to the first slider 1 by workpiece mounting screws 18; the second tilting gauge block 201 is embedded in the mounting groove at the bottom of the second slider 2, and the second tilting gauge block 201 is connected to the second slider 2 by workpiece mounting screws 18. The tilting gauge blocks and the corresponding sliders are detachably connected, and when detecting top hammer workpieces of different specifications (the tilt angle of the first tilting plane 012 changes), matching tilting gauge blocks can be replaced.

[0024] Based on the above technical solution, the first tilting gauge block 101 and the second tilting gauge block 201 are tooling parts, which are replaced according to the different angles of the workpiece being hammered. Currently, there are three commonly used angles in my country. Replacement only requires removing the workpiece mounting fixing screw 18 from the bottom of the gauge.

[0025] Furthermore, the measuring instrument 8 is a dial indicator, which is fixed to the first slider by the measuring instrument fixing set screw 16. The digital display dial 4 is a digital micrometer.

[0026] Furthermore, the end of the slide rail 3 near the first slider 1 is fixed inside the fine-tuning seat 7, and the fine-tuning seat locking nut 13 passes through the fine-tuning seat 7 and abuts against the side surface of the slide rail 3; the adjustment knob 6 of the linear adjustment mechanism is rotatably disposed inside the fine-tuning seat 7, and the fine-tuning seat 7 restricts the displacement of the adjustment knob 6. The end of the slide rail 3 near the first slider 1 is provided with a fine-tuning back stop 14, and the fine-tuning back stop fixing bolt 15 passes through the fine-tuning back stop 14 and abuts against the end face of the slide rail 3. The function of the fine-tuning back stop is to prevent the fine-tuning seat from sliding out of the guide rail when it is not locked.

[0027] Instructions for use: See appendix Figure 6-7 Place gauge 9 below the digital scale, ensuring the inclination angles of the first inclination block 101 and the second inclination block 201 of the digital scale align with the standard measuring surfaces 901 on both sides of the top of gauge 9. Then, fine-tune the position of the first slider 1 by rotating the adjustment knob. Through relative sliding of the inclined surfaces, bring gauge 9 closer to the digital scale. Continue fine-tuning by rotating the adjustment knob 6 until the dial indicator needle moves above 0.2%. The absolute position of the scale is the gauge dimension. At this point, press the zeroing button on the digital display dial 4 to zero the gauge, completing the calibration. After one calibration, no further calibration is needed if the measuring instrument is functioning correctly.

[0028] After calibration, the workpiece can be measured midway. Taking a gauge size of 70mm as an example, place the workpiece under the digital scale, so that the inclination angle of the first inclination block 101 and the inclination angle of the second inclination block 201 of the digital scale are respectively aligned with the two first inclined planes 012 opposite to the workpiece. Then, fine-tune the position of the first slider 1 by rotating the adjustment knob 6. When the dial indicator needle swings more than two divisions again (i.e., two per thousand), the reading plus 70mm is the actual size of the workpiece. This measuring tool is small and accurate, achieving the design and usage objectives.

[0029] It should be noted that the angle of the standard measuring surfaces 901 on both sides of the top of the gauge must match the angle of the first inclined plane 012 of the workpiece to be measured. The length of the gauge and the length of the top of the workpiece can be the same or different. Taking a gauge size of 70mm as an example, when the length of the top of the workpiece to be measured is 70mm, the current value of the digital display after inspection is 70mm, and the display value on the digital dial is 0 ± [amount in millimeters]. When the length of the top of the workpiece to be measured is 100mm, the display value on the digital dial is 30 ± [amount in millimeters]. In actual use, you only need to look at the decimal part to know how much more machining is needed.

[0030] It should be noted that the parts of this utility model not described in detail are existing technologies.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A top-hammer measuring device, characterized by: The device includes a digital ruler and a measuring dial indicator. The digital ruler includes a slide rail, a first slider, and a second slider. The first and second sliders are slidably connected to the slide rail. A first tilting block is fixed to the bottom of the first slider, and a second tilting block is fixed to the bottom of the second slider. The tilting angles of the first and second tilting blocks are opposite to each other. A top hammer workpiece is clamped between the tilting angles of the first and second tilting blocks for measurement. The tilting angles are matched with the inclined plane of the upper part of the top hammer workpiece. The measuring dial indicator is fixed on the first slider and located between the first and second tilting blocks. The probe of the measuring dial indicator protrudes from the lower surface of the first slider and is used to contact the upper surface of the top hammer workpiece.

2. A top hammer measuring device according to claim 1, characterized in that: The digital display ruler also includes a linear adjustment mechanism, which includes a threaded fine-tuning screw and an adjustment knob. The internal thread of the center hole of the adjustment knob engages with the external thread of the fine-tuning screw and rotates relative to it. The fine-tuning screw and the first slider are connected and fixed by a set screw and thread. Rotating the adjustment knob drives the fine-tuning screw and the first slider to slide on the slide rail.

3. A top hammer measuring device according to claim 2, characterised in that: The adjustment knob of the linear adjustment mechanism is rotatably mounted in the fine-tuning seat, which restricts the displacement of the adjustment knob. The fine-tuning seat is fixedly connected to the slide rail.

4. A top hammer measuring device according to claim 1, characterized in that: The digital ruler also includes a digital display dial, which is disposed on the first slider and is used to display the displacement of the first slider.

5. A top hammer measuring device according to claim 4, characterised in that: The digital display dial is located above the slide rail and can detect the displacement of the first slider relative to the slide rail. The first slider is connected to the cover by bolts, and the cover connects the first slider and the digital display dial into one unit.

6. A top hammer measuring device according to claim 4, wherein: The digital display dial is a digital micrometer.

7. A topset measuring device according to claim 1, wherein: The measuring instrument is a dial indicator, and the measuring instrument is fixed to the first slider by a measuring instrument fixing set screw.

8. A topset measuring device according to claim 1, wherein: The first tilting gauge block is embedded in the mounting groove at the bottom of the first slider, and the first tilting gauge block is connected to the first slider by fixing screws; the second tilting gauge block is embedded in the mounting groove at the bottom of the second slider, and the second tilting gauge block is connected to the second slider by fixing screws.

9. A topset measuring device according to claim 1, wherein: The end of the slide rail near the first slider is fixed inside the fine-tuning seat, and the locking nut of the fine-tuning seat passes through the fine-tuning seat and abuts against the side surface of the slide rail; the end of the slide rail near the first slider is provided with a fine-tuning back stop, and the fine-tuning back stop fixing bolt passes through the fine-tuning back stop and abuts against the end face of the slide rail.

10. A top hammer measuring device according to any of claims 1-9, characterized in that: It also includes a gauge for calibrating the measuring device; the gauge has two inclined standard measuring surfaces on its top two sides. The standard measuring surfaces of the gauge have the same inclination angle as the upper inclined plane of the standard size top hammer. The gauge with a known size is clamped between the inclination angle of the first inclination block and the inclination angle of the second inclination block. The position of the first slider is adjusted until the upper surface of the gauge contacts the measuring instrument, causing the measuring instrument pointer to deflect. At this time, the zero position of the digital display ruler is the actual size of the gauge.

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