Position measuring device for numerical control grinding machine

Abstract

The utility model discloses a position measuring device for a numerical control grinding machine, and relates to the technical field of grinding machine processing. The measuring assembly comprises a sliding rod, a limiting plate, a fixing block, a ball, a reset spring, a fixing sleeve and a laser distance measuring sensor, a sliding hole is formed in the top of the middle block, and the whole sliding rod is arranged in the sliding hole in a sliding mode; the top end and the bottom end of the sliding rod are fixed to the limiting plate and the fixing block respectively, the whole ball is embedded into the fixing block and can roll in the fixing block, the sliding rod is sleeved with the whole reset spring, and the two ends of the reset spring make contact with the middle block and the fixing block respectively. According to the utility model, the workpiece can be adjusted in a targeted manner according to a measurement result, so that machining errors are avoided, grinding errors and workpiece scrapping caused by unevenness of the workpiece are avoided, the measurement is simple and efficient, and meanwhile, the overall structure is simple and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machine processing, in particular to a position measuring device for a numerically controlled grinding machine. Background Art

[0002] In the machining industry, it is known that in order to ensure machining accuracy, the CNC grinder needs to measure the end face position of the workpiece it is machining while it is working. For example, in the cylindrical grinding process, due to the deviation of the top hole depth and shaft size of the shaft, the end face position will have axial deviation when double top clamping is used.

[0003] At present, the machining industry uses manual measurement or visual measurement to measure the end face position of CNC grinders. Manual measurement or visual measurement is directly related to the work experience and subjective consciousness of the staff, and has poor stability, resulting in low processing yield and poor efficiency. It cannot adapt to the grinding needs of workpieces with tapers or curvatures, and often leads to the scrapping of workpieces or the dangerous situation of grinding wheels hitting workpieces. Utility Model Content

[0004] The purpose of the present application is to provide a position measurement device for a CNC grinding machine to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present application provides the following technical solution: a position measuring device for a CNC grinding machine, comprising:

[0006] middle block;

[0007] A measuring component, the measuring component comprises a slide bar, a limit plate, a fixed block, a ball, a return spring, a fixed sleeve and a laser ranging sensor, a slide hole is provided on the top of the middle block, a slide hole is provided on the top of the middle block, the slide bar is integrally slidably arranged in the slide hole, the top and bottom ends of the slide bar are respectively fixed to the limit plate and the fixed block, the ball is integrally embedded in the fixed block, and the ball can roll in the fixed block, the return spring is integrally sleeved on the slide bar, the two ends of the return spring are respectively in contact with the middle block and the fixed block, one end of the fixed sleeve is fixed on the middle block, and the laser ranging sensor is installed on the other end of the fixed sleeve;

[0008] A clamping mechanism, wherein the clamping mechanism is connected to the middle block;

[0009] A positioning mechanism is connected to the middle block.

[0010] Preferably, the clamping mechanism comprises an intermediate plate, two clamping plates and a centering mechanism, one side of the intermediate plate is fixed to the outer side of the intermediate block, and the two clamping plates are mounted on the intermediate plate via the centering mechanism.

[0011] Preferably, the centering mechanism includes a double-threaded rod and a guide rod, the outer wall of the middle plate is provided with a first rotating hole, the middle position of the double-threaded rod is rotatably installed in the first rotating hole, the outer walls of the two clamps are respectively provided with a left-handed threaded hole and a right-handed threaded hole, the two ends of the double-threaded rod are respectively installed in the left-handed threaded hole and the right-handed threaded hole through left-handed threads and right-handed threads, the outer wall of the middle plate is provided with a fixing hole, the middle position of the guide rod is fixedly installed in the fixing hole, and the clamp is slidably sleeved on the guide rod.

[0012] Preferably, outer walls on opposite sides of the two clamping plates are both provided with rubber layers.

[0013] Preferably, knobs are fixed to both ends of the double-threaded rod.

[0014] Preferably, the positioning mechanism includes a reference plate, a rotating block and a positioning plate, one end of the reference plate is fixed on the middle block, a notch is provided at the bottom of the reference plate, both ends of the rotating block are rotatably mounted on both sides of the notch, one end of the positioning plate is rotatably mounted on the rotating block, and a plastic buckle is fixedly mounted on the outer side of the reference plate.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] The utility model can adjust the workpiece in a targeted manner according to the measurement result, thereby avoiding processing errors, avoiding grinding errors caused by uneven workpieces, and preventing the workpiece from being scrapped. The measurement is simple and efficient, and the overall structure is simple and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0019] Figure 2 is a schematic diagram of the storage structure of the positioning mechanism in this embodiment;

[0020] Figure 3 is a schematic diagram of the interior of the fixing sleeve in this embodiment;

[0021] Figure 4 It is a schematic diagram of positioning adjustment in this embodiment.

[0022] In the figure: 1. middle block; 2. clamping mechanism; 3. measuring component; 4. plastic buckle; 5. rotating block; 6. positioning plate; 7. reference plate; 8. middle plate; 9. guide rod; 10. knob; 11. double threaded rod; 12. clamping plate; 13. rubber layer; 14. reset spring; 15. sliding rod; 16. fixing block; 17. ball bearing; 18. limit plate; 19. fixing sleeve; 20. laser ranging sensor.

[0023] a. Grinding wheel body. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Example: Reference Figure 1-4 A position measuring device for a CNC grinding machine shown in the figure comprises:

[0026] Middle block 1;

[0027] The measuring component 3 includes a slide bar 15, a limit plate 18, a fixed block 16, a ball 17, a reset spring 14, a fixed sleeve 19 and a laser ranging sensor 20. A slide hole is provided at the top of the middle block 1. The slide bar 15 is integrally slidably arranged in the slide hole. The top and bottom ends of the slide bar 15 are respectively fixed to the limit plate 18 and the fixed block 16. The ball 17 is integrally embedded in the fixed block 16, and the ball 17 can roll in the fixed block 16. The reset spring 14 is integrally sleeved on the slide bar 15. The two ends of the reset spring 14 are respectively fixed to the middle block 16. The fixed block 16 is in contact with the fixed sleeve 19, one end of the fixed sleeve 19 is fixed on the middle block 1, and the laser distance sensor 20 is installed on the other end of the fixed sleeve 19. The ball 17 is adjusted to be on the same horizontal plane as the bottom of the grinding wheel. When the grinding wheel contacts the workpiece, the ball 17 contacts the workpiece, the grinding wheel grinds the workpiece and moves on the workpiece. The ball 17 is synchronized with the entire grinding wheel. If the workpiece after grinding does not meet the specified requirements, a height difference is formed between the qualified surface and the unqualified surface polished by the grinding wheel, the sliding rod 15 moves up, and the laser distance sensor 20 measures the position of the limit plate 18, so that it can be known that the workpiece grinding is unqualified.

[0028] The clamping mechanism 2 is connected to the intermediate block 1, and the intermediate block 1 is clamped on the grinding wheel housing through the clamping mechanism 2;

[0029] The positioning mechanism is connected to the middle block 1, and the bottom of the ball 17 is located on the same horizontal plane as the bottom of the grinding wheel through the positioning mechanism.

[0030] Specifically, the clamping mechanism 2 includes an intermediate plate 8, two clamping plates 12 and a centering mechanism. One side of the intermediate plate 8 is fixed to the outer side of the intermediate block 1. The two clamping plates 12 are installed on the intermediate plate 8 through the centering mechanism. The centering mechanism includes a double-threaded rod 11 and a guide rod 9. The outer wall of the intermediate plate 8 is provided with a first rotating hole. The middle position of the double-threaded rod 11 is rotatably installed in the first rotating hole. The outer walls of the two clamping plates 12 are respectively provided with a left-handed threaded hole and a right-handed threaded hole. The two ends of the double-threaded rod 11 are respectively installed in the left-handed threaded hole and the right-handed threaded hole through left-handed threads and right-handed threads. The outer wall of the intermediate plate 8 is provided with a fixing hole. The middle position of the guide rod 9 is fixedly installed in the fixing hole. The clamping plate 12 is slidably mounted on the guide rod 9. The grinding wheel is placed between the two clamping plates 12. The double-threaded rod 11 is rotated. The double-threaded rod 11 brings the two clamping plates 12 closer to each other through the left-handed thread and the right-handed thread until the grinding wheel is clamped.

[0031] Specifically, outer walls of the two clamping plates 12 on opposite sides are both provided with rubber layers 13 for enlarging.

[0032] Specifically, knobs 10 are fixed to both ends of the double-threaded rod 11 , and the knobs 10 are configured to rotate the double-threaded rod 11 .

[0033] Specifically, the positioning mechanism includes a reference plate 7, a rotating block 5 and a positioning plate 6. One end of the reference plate 7 is fixed on the middle block 1. A notch is provided at the bottom of the reference plate 7. The two ends of the rotating block 5 are respectively rotatably mounted on both sides of the notch. One end of the positioning plate 6 is rotatably mounted on the rotating block 5. A plastic buckle 4 is fixedly mounted on the outer side of the reference plate 7. Before polishing, the plastic buckle 4 is fixedly mounted on the outer side of the reference plate 7. Figure 2 , rotate the rotating block 5 downward, and then rotate the positioning plate 6 to make the positioning plate 6 contact with the bottom of the grinding wheel. Figure 4 , then use the clamping mechanism 2 to clamp the grinding wheel, and then return the positioning mechanism to its original state.

[0034] The working principle of this utility model: before grinding, combined with the attached Figure 2, so that the rotating block 5 rotates downward, and then the positioning plate 6 is rotated to make the positioning plate 6 contact with the bottom of the grinding wheel, and the grinding wheel is placed between the two clamping plates 12, and the double-threaded rod 11 is rotated. The double-threaded rod 11 makes the two clamping plates 12 approach each other through left-handed threads and right-handed threads respectively until the grinding wheel is clamped, and then the positioning mechanism returns to its original state. When the grinding wheel contacts the workpiece, the ball 17 contacts the workpiece, the grinding wheel grinds the workpiece and moves on the workpiece, and the ball 17 moves synchronously with the entire grinding wheel. If the workpiece after grinding does not meet the specified requirements, a height difference is formed between the qualified surface and the unqualified surface polished by the grinding wheel, and the sliding rod 15 moves up, and the laser ranging sensor 20 measures the position of the limit plate 18, so that it can be known that the workpiece grinding is unqualified.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A position measuring device for a CNC grinding machine, characterized in that: include: Middle block (1); A measuring assembly (3), the measuring assembly (3) comprising a slide bar (15), a limit plate (18), a fixed block (16), a ball (17), a return spring (14), a fixed sleeve (19) and a laser distance sensor (20), the top of the intermediate block (1) is provided with a slide hole, the top of the intermediate block (1) is provided with a slide hole, the entire slide bar (15) is slidably arranged in the slide hole, the top end and the bottom end of the slide bar (15) are respectively connected to the limit plate (18) and the fixed block (16) are fixed, the ball (17) is entirely embedded in the fixed block (16), and the ball (17) can roll in the fixed block (16), the return spring (14) is entirely sleeved on the slide bar (15), the two ends of the return spring (14) are respectively in contact with the intermediate block (1) and the fixed block (16), one end of the fixed sleeve (19) is fixed on the intermediate block (1), and the laser distance sensor (20) is installed on the other end of the fixed sleeve (19); A clamping mechanism (2), wherein the clamping mechanism (2) is connected to the intermediate block (1); A positioning mechanism is connected to the middle block (1).

2. A position measuring device for a CNC grinding machine according to claim 1, characterized in that: The clamping mechanism (2) comprises an intermediate plate (8), two clamping plates (12) and a centering mechanism. One side of the intermediate plate (8) is fixed to the outside of the intermediate block (1), and the two clamping plates (12) are mounted on the intermediate plate (8) via the centering mechanism.

3. A position measuring device for a CNC grinding machine according to claim 2, characterized in that: The centering mechanism comprises a double-threaded rod (11) and a guide rod (9); a first rotating hole is provided on the outer wall of the intermediate plate (8); the middle position of the double-threaded rod (11) is rotatably mounted in the first rotating hole; a left-handed threaded hole and a right-handed threaded hole are provided on the outer walls of the two clamping plates (12); the two ends of the double-threaded rod (11) are respectively mounted in the left-handed threaded hole and the right-handed threaded hole through left-handed threads and right-handed threads; a fixing hole is provided on the outer wall of the intermediate plate (8); the middle position of the guide rod (9) is fixedly mounted in the fixing hole; and the clamping plate (12) is slidably sleeved on the guide rod (9).

4. A position measuring device for a CNC grinding machine according to claim 2, characterized in that: The outer walls of the two clamping plates (12) on the opposite side are both provided with rubber layers (13).

5. The position measuring device for a CNC grinding machine according to claim 3, characterized in that: Knobs (10) are fixed to both ends of the double-threaded rod (11).

6. The position measuring device for a CNC grinding machine according to claim 1, characterized in that: The positioning mechanism comprises a reference plate (7), a rotating block (5) and a positioning plate (6); one end of the reference plate (7) is fixed on the middle block (1); a notch is provided at the bottom of the reference plate (7); two ends of the rotating block (5) are respectively rotatably mounted on both sides of the notch; one end of the positioning plate (6) is rotatably mounted on the rotating block (5); and a plastic buckle (4) is fixedly mounted on the outer side of the reference plate (7).

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