Drill jig with high-precision adjustment function

Abstract

The utility model belongs to the technical field of drill jigs, and particularly relates to a drill jig with high-precision adjustment, which comprises a bottom plate, a chuck frame fixedly connected onto the bottom plate, a rotating shaft rotatably connected into the chuck frame, a three-jaw chuck fixedly connected to one end of the rotating shaft, a detection shell sleeved on the outer side of the rotating shaft and a twelve-face reflector fixedly connected with the rotating shaft. A laser transmitter is fixedly connected to the detection shell, a photosensitive sensor is fixedly connected to the top end of the reflection pointing face of the dodecahedral reflector in the detection shell, and a grating sensor is fixedly connected to the position, below the photosensitive sensor, in the detection shell. The angle of a part can be rotationally adjusted, drilling machining can be conveniently carried out on different positions of the shaft rod part, the twelve-face reflecting mirror and the laser transmitter are arranged, the angle is detected and adjusted through the deflection angle of reflected laser, counting is carried out through the light sensing sensor, and coarse adjustment is achieved; and the grating sensor is used for detecting the specific deflection angle to realize fine adjustment, so that the adjustment is convenient, and the adjustment accuracy is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling machine clamps, in particular to a drilling machine clamp with high-precision adjustment. Background Art

[0002] A drilling fixture is a fixture used to secure workpieces during machining on a drilling machine. The need for workpiece positioning within the fixture is increasing for economical and reliable part machining in both single-piece and batch production. However, while existing drilling fixtures offer a certain degree of clamping functionality, they lack precise adjustment. This is particularly true when drilling shafts, which often require drilling at varying angles and positions on the surface. Furthermore, the angles between each hole require high machining accuracy, a feature that conventional drilling fixtures struggle to provide.

[0003] The Chinese patent with authorization announcement number CN209986613U discloses a fixture for drilling holes on a CNC lathe, comprising a frame and a fixed plate, wherein the left and right sides of the bottom end of the frame are fixedly connected to support legs, the inner bottom end of the frame is provided with a storage frame, the inner top end of the frame is fixedly connected to an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected to an electric drill, a connecting shaft is rotatably connected at the inner central position of the rear end face of the frame, the front end face of the connecting shaft is fixedly connected to the fixed plate, the outer side of the front end face of the connecting shaft is rotatably connected to a second bevel gear, the rear end face of the second bevel gear is meshed with a first bevel gear, the top end of the first bevel gear is fixedly connected to a threaded rod, and the top end of the threaded rod is fixedly connected to a rotating block, and the rotation angle of the adjusting plate is fixed by the design of a positioning ring, and the rotation angle of the fixed plate is accurately positioned, which is convenient for drilling holes in the product.

[0004] However, the above has the following shortcomings:

[0005] 1. The above-mentioned patent uses a push rod to push the adjusting rod to rotate, and the rotation of the adjusting plate can drive the connecting shaft and the fixed plate to rotate, thereby realizing drilling at different positions of the product. However, the method of adjusting the drilling position in the above-mentioned patent cannot accurately determine the rotation angle, which affects the adjustment of the processing position and angle. In addition, it is easy for mechanical vibration to cause the part to deflect during the processing, and the processing accuracy cannot be guaranteed.

[0006] 2. The method for adjusting the processing angle in the above-mentioned patent is too simple. In actual use, when the angle needs to be adjusted quickly, it is difficult to achieve the effect of rapid adjustment, which affects the processing efficiency. Moreover, when the processing angle needs to be finely adjusted, it is unable to provide and respond to accurate angle information, making it difficult to ensure the accuracy of the angle adjustment. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the technical problem solved by the present invention is that, by arranging a three-jaw chuck and an ejector, shaft rod parts can be stably clamped, and the angle of the parts can be rotated to adjust, so as to facilitate drilling processing at different positions on the shaft rod parts. The components used for detection are in direct contact with the components used for fixing the parts, so as to effectively avoid the influence of mechanical vibration on the angle adjustment. By arranging a twelve-sided reflector and a laser emitter, in the process of adjusting the rotation of the three-jaw chuck, the angle at which the twelve-sided reflector reflects the light of the laser emitter changes. The photosensitive sensor is used to detect the number of changes to calculate the rough angle, and the grating sensor is used to detect the fine rotation angle, so as to realize high-precision angle adjustment.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling machine fixture with high-precision adjustment, comprising a base plate, a chuck frame fixedly connected to the base plate, a rotating shaft rotatably connected inside the chuck frame, one end of the rotating shaft fixedly connected to a three-jaw chuck, an outer side of the end of the rotating shaft away from the three-jaw chuck is sleeved with a detection shell, the rotating shaft is fixedly connected to a twelve-faceted reflector located inside the detection shell, a laser emitter pointing to the surface of the twelve-faceted reflector is fixedly connected above the detection shell, a photosensitive sensor is fixedly connected to the top of the reflecting pointing surface of the twelve-faceted reflector inside the detection shell, and a grating sensor is fixedly connected to the detection shell below the photosensitive sensor.

[0009] Furthermore, a rubber pad for reducing vibration is provided at the bottom of the detection shell, and a shock-absorbing seat is fixedly connected to the bottom of the rubber pad. The detection shell, rubber pad and shock-absorbing seat are fixedly connected to the base plate by bolts, and a gasket is provided between the top of each bolt and the bottom side of the detection shell.

[0010] Furthermore, opaque flexible shields are respectively provided on both sides of the detection shell, a fixing frame is provided at the outer edge of each flexible shield, and a slip ring rotatably connected to the rotating shaft is fixedly connected to the center of each flexible shield.

[0011] Furthermore, a gear seat is fixedly connected to the base plate at a side of the detection shell away from the chuck frame, a disc-shaped end cover is fixedly connected to the side of the gear seat close to the detection shell, the end of the rotating shaft is rotatably connected to the end cover and extends into the gear seat, a coarse adjustment handwheel is fixedly connected to the rotating shaft between the detection shell and the gear seat, and a locking screw is threadedly connected to the end cover at a corresponding position of the rotating shaft.

[0012] Furthermore, a gear ring is fixedly connected to the gear seat, and one end of the rotating shaft extending into the gear seat is fixedly connected to the sun gear, and a plurality of planetary gears are circumferentially distributed and meshed between the sun gear and the gear ring. A planetary carrier is rotatably connected to the side of the gear seat away from the detection shell, and the planetary carrier is rotatably connected to each planetary gear. The end of the planetary carrier extending out of the gear seat is fixedly connected to a fine-tuning handwheel.

[0013] Furthermore, two groups of rod seats are symmetrically distributed and fixedly connected on both sides of the three-jaw chuck on the base plate, a sliding rod is fixedly connected between one group of rod seats, and a screw rod is rotatably connected between the other group of rod seats, one end of the screw rod extending out of the rod seat is fixedly connected to a thimble adjusting wheel, an thimble seat is slidably connected to the sliding rod, the thimble seat is threadedly connected to the screw rod, and the thimble is rotatably connected to the side of the thimble seat close to the three-jaw chuck.

[0014] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) By setting up a three-jaw chuck and an ejector pin, shaft parts can be stably clamped and the angle of the parts can be adjusted by rotation, which facilitates drilling at different positions on the shaft parts. The parts used for detection are in direct contact with the parts used for fixing the parts, effectively avoiding the influence of mechanical vibration on angle adjustment.

[0016] (2) By setting up twelve-sided reflectors and laser emitters, the angle of deflection of the reflected laser is used to detect and adjust the angle, and the photosensitive sensor is used to count to achieve coarse adjustment, while the grating sensor is used to detect the specific deflection angle to achieve fine adjustment, ensuring the accuracy of the adjustment while facilitating the adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of this patent.

[0018] Figure 2 This is the main view of this patent.

[0019] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0020] Figure 4 for Figure 2 A three-dimensional cross-sectional view of the middle BB.

[0021] Figure 5 This is a schematic diagram of the structure of the detection shell in this patent.

[0022] Figure 6 This is a schematic diagram of the structure of the gear seat in this patent.

[0023] Explanation of the reference numerals: base plate 10; chuck frame 11; three-jaw chuck 12; rotating shaft 13; rod seat 14; screw rod 15; slide rod 16; thimble adjustment wheel 17; thimble seat 18; thimble 19; detection shell 20; twelve-sided reflector 21; laser emitter 22; photosensor 23; grating sensor 24; flexible cover 25; fixing frame 26; rubber pad 27; shock-absorbing seat 28; bolt 29; gasket 30; gear seat 31; end cover 32; locking screw 33; gear ring 34; sun gear 35; planetary gear 36; planetary carrier 37; fine adjustment handwheel 38; coarse adjustment handwheel 39; slip ring 40. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, a drilling machine fixture with high-precision adjustment includes a base plate 10, a chuck frame 11 is fixedly connected to the base plate 10, a rotating shaft 13 is rotatably connected in the chuck frame 11, one end of the rotating shaft 13 is fixedly connected to a three-jaw chuck 12, and two groups of rod seats 14 are symmetrically distributed and fixedly connected on both sides of the three-jaw chuck 12 on the base plate 10, one group of rod seats 14 is fixedly connected with a sliding rod 16, and the other group of rod seats 14 is rotatably connected with a screw rod 15, and one end of the screw rod 15 extending out of the rod seat 14 is fixedly connected with a pin adjustment wheel 17, and a pin seat 18 is slidably connected to the sliding rod 16, and the pin seat 18 is threadedly connected to the screw rod 15, and the side of the pin seat 18 close to the three-jaw chuck 12 is rotatably connected with a pin 19 pointing to the center of the three-jaw chuck 12.

[0026] By providing the three-jaw chuck 12 and the ejector pin 19, shaft parts can be stably clamped, and the angle of the parts can be rotated and adjusted, making it convenient to perform drilling at different positions on the shaft parts.

[0027] like Figure 2 、 Figure 3 and Figure 5 As shown, a detection shell 20 is sleeved on the outer side of the end of the rotating shaft 13 away from the three-jaw chuck 12, and a twelve-sided reflector 21 is fixedly connected to the rotating shaft 13 inside the detection shell 20. A laser emitter 22 pointing to the surface of the twelve-sided reflector 21 is fixedly connected at a position corresponding to the twelve-sided reflector 21 on the detection shell 20, and a photosensitive sensor 23 is fixedly connected at the top of the reflecting pointing surface of the twelve-sided reflector 21 inside the detection shell 20, and a grating sensor 24 is fixedly connected below the photosensitive sensor 23 in the detection shell 20.

[0028] By setting up a twelve-sided reflector 21 and a laser emitter 22, the angle at which the twelve-sided reflector 21 reflects the light from the laser emitter 22 changes during the process of adjusting the rotation of the three-jaw chuck 12. The photosensitive sensor 23 is used to detect the number of changes to calculate the rough angle, and the grating sensor 24 is used to detect the fine rotation angle to achieve high-precision angle adjustment.

[0029] like Figure 2 、 Figure 3 and Figure 5 As shown, a rubber pad 27 for reducing vibration is provided at the bottom of the detection shell 20, and a shock-absorbing seat 28 is fixedly connected to the bottom of the rubber pad 27. The detection shell 20, the rubber pad 27 and the shock-absorbing seat 28 are fixedly connected to the base plate 10 by bolts 29. A gasket 30 is provided between the top of each bolt 29 and the bottom side of the detection shell 20. Optical-proof flexible covers 25 are provided on both sides of the detection shell 20, and a fixing frame 26 is provided at the outer edge of each flexible cover 25. Each fixing frame 26 is provided with a plurality of screws for fixing the flexible cover 25 and the fixing frame 26 to the detection shell 20. A slip ring 40 rotatably connected to the rotating shaft 13 is fixedly connected at the center of each flexible cover 25.

[0030] By providing the rubber pad 27, the vibration transmitted by the base plate 10 is reduced. Due to the provision of the flexible shield 25, while effectively shielding the external light to avoid affecting the detection effect, the vibration on the rotating shaft 13 is prevented from being transferred to the detection shell 20, thereby effectively ensuring that the light-sensitive sensor 23 and the grating sensor 24 will not be damaged by vibration, thereby ensuring the detection accuracy and service life.

[0031] like Figure 1 、 Figure 4 and Figure 6 As shown, a gear seat 31 is fixedly connected to the base plate 10 at a side of the detection shell 20 away from the chuck frame 11, and a disc-shaped end cover 32 is fixedly connected to the gear seat 31 on the side close to the detection shell 20. The end of the rotating shaft 13 is rotatably connected to the end cover 32 and extends into the gear seat 31. A coarse adjustment handwheel 39 is fixedly connected to the rotating shaft 13 between the detection shell 20 and the gear seat 31, and a locking screw 33 for locking the rotating shaft 13 is threadedly connected at a corresponding position of the rotating shaft 13 on the end cover 32. A gear ring 34 is fixedly connected to the gear seat 31, and one end of the rotating shaft 13 extending into the gear seat 31 is fixedly connected to the sun gear 35, and a plurality of planetary gears 36 are circumferentially distributed and meshed between the sun gear 35 and the gear ring 34. A planet carrier 37 is rotatably connected to the gear seat 31 away from the detection shell 20. The planet carrier 37 is rotatably connected to each planetary gear 36, and one end of the planet carrier 37 extending out of the gear seat 31 is fixedly connected to the fine adjustment handwheel 38.

[0032] By setting the coarse adjustment handwheel 39, the rotating shaft 13 and the three-jaw chuck 12 can be directly driven to rotate, thereby realizing coarse adjustment of the drilling processing angle of the shaft rod parts. By setting the gear ring 34, the sun gear 35, the planetary gear 36 and the planetary carrier 37, a planetary gear pair is formed, and the fine adjustment handwheel 38 is used to drive the three-jaw chuck 12 and the rotating shaft 13 to rotate with a smaller transmission ratio, thereby realizing fine adjustment of the drilling processing angle of the shaft rod parts, thereby realizing high-precision adjustment. During processing, the rotating shaft 13 can be locked by tightening the locking screw 33 to prevent the rotating shaft 13 from deflecting again, thereby ensuring processing accuracy.

[0033] In this embodiment, initially, the operator installs the fixture on the drilling machine and connects the laser emitter 22, the photosensitive sensor 23 and the grating sensor 24 to the power supply and the detection system. When drilling processing is required, one end of the shaft part is fixed in the three-jaw chuck 12 for centering clamping. Then, the operator turns the thimble adjusting wheel 17 to drive the thimble seat 18 and then the thimble 19 approaches the shaft part, so that the tip of the thimble 19 is stably against the end of the shaft part, completing the installation of the part.

[0034] Subsequently, the operator can first rotate the coarse adjustment handwheel 39 according to the processing requirements, drive the three-jaw chuck 12 to drive the shaft part to rotate and adjust the processing position angle, and perform coarse adjustment. During the coarse adjustment process, the laser emitter 22 emits a laser beam, which is reflected by the twelve-sided reflector 21 in the direction of the photosensitive sensor 23 and the grating sensor 24. Since the twelve-sided reflector 21 rotates with the rotating shaft 13, the direction of the reflected laser beam keeps changing.

[0035] During this process, the laser beam first hits the photosensitive sensor 23, and the photosensitive sensor 23 receives the laser beam and generates a high level to transmit to the detection system. Then the twelve-sided reflector 21 rotates to deflect the direction of the reflected laser toward the grating sensor 24. When the laser beam leaves the photosensitive sensor 23, a low level is generated until the twelve-sided reflector 21 continues to rotate, and the laser beam contacts the new reflecting surface of the twelve-sided reflector 21. At this time, the laser beam is reflected onto the photosensitive sensor 23 again, and the detection system detects a high level again, and a number is recorded. Since the twelve-sided reflector 21 has twelve uniform reflecting surfaces, each count represents that the three-jaw chuck 12 rotates the part thirty degrees, which is convenient for roughly adjusting the part to common processing deflection angles such as thirty degrees, sixty degrees, ninety degrees, and one hundred and eighty degrees.

[0036] After the coarse adjustment is completed, the part is in the rough processing position. At this time, the operator rotates the fine adjustment handwheel 38. Since the ring gear 34, sun gear 35, planetary gear 36 and planetary carrier 37 form a planetary gear pair, when the fine adjustment handwheel 38 is rotated, the three-jaw chuck 12 changes the processing position angle of the shaft part at a slower speed, thereby performing fine adjustment.

[0037] During the fine-tuning process, the twelve-sided reflector 21 rotates with the rotating shaft 13, and the laser beam generated by the laser emitter 22 hits the grating sensor 24. Due to the different deflection angles of the twelve-sided reflector 21, the reflected laser irradiates the position of the surface of the grating sensor 24 at different positions. The grating sensor 24 can detect different irradiation positions, thereby driving the twelve-sided reflector 21 and the rotating shaft 13 to accurately rotate, and then being able to detect the single-digit angle position to achieve precise angle adjustment.

[0038] The signals generated by the photosensitive sensor 23 and the grating sensor 24 are counted and sorted by the detection system and directly displayed for the operator to read, ensuring that the operator can control the angle in real time. After the angle adjustment is completed, the operator tightens the locking screw 33 so that the rotating shaft 13 is firmly locked and cannot rotate anymore, thereby avoiding the deflection of the rotating shaft 13 due to mechanical vibration during drilling processing, thereby ensuring processing stability.

[0039] By providing the rubber pad 27, the mechanical vibration transmitted from the base plate 10 to the detection shell 20 is reduced during the drilling process, thereby preventing the vibration from causing damage to the photosensitive sensor 23 and the grating sensor 24 and affecting their detection accuracy. In addition, due to the provision of the flexible mask 25, while effectively shielding external light to avoid affecting the detection effect, the rotating shaft 13 is not in direct contact with the detection shell 20, thereby preventing the vibration on the rotating shaft 13 from being transferred to the detection shell 20, thereby effectively ensuring that the photosensitive sensor 23 and the grating sensor 24 will not be damaged by vibration, thereby ensuring detection accuracy and service life.

[0040] The above-mentioned three-jaw chuck 12, laser emitter 22, photosensor 23, grating sensor 24, etc. are mature existing technologies and will not be described in detail herein.

[0041] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0042] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0043] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A drilling machine fixture with high precision adjustment, characterized in that, The invention comprises a base plate (10), a chuck frame (11) is fixedly connected to the base plate (10), a rotating shaft (13) is rotatably connected inside the chuck frame (11), one end of the rotating shaft (13) is fixedly connected to a three-jaw chuck (12), an outer side of the end of the rotating shaft (13) away from the three-jaw chuck (12) is sleeved with a detection shell (20), a twelve-faceted reflector (21) is fixedly connected to the rotating shaft (13) located inside the detection shell (20), a laser emitter (22) pointing to the surface of the twelve-faceted reflector (21) is fixedly connected above the detection shell (20), a light-sensitive sensor (23) is fixedly connected to the top of the reflection pointing surface of the twelve-faceted reflector (21) inside the detection shell (20), and a grating sensor (24) is fixedly connected to the detection shell (20) below the light-sensitive sensor (23).

2. A drilling machine fixture with high precision adjustment according to claim 1, characterized in that: The bottom of the detection shell (20) is provided with a rubber pad (27) for reducing vibration, and the bottom of the rubber pad (27) is fixedly connected to a shock-absorbing seat (28). The detection shell (20), the rubber pad (27) and the shock-absorbing seat (28) are fixedly connected to the bottom plate (10) through bolts (29), and a gasket (30) is provided between the top of each bolt (29) and the bottom side of the detection shell (20).

3. The drilling machine fixture with high precision adjustment according to claim 1, characterized in that: Optical-proof flexible shields (25) are respectively provided on both sides of the detection shell (20), a fixing frame (26) is provided at the outer edge of each flexible shield (25), and a slip ring (40) rotatably connected to the rotating shaft (13) is fixedly connected at the center of each flexible shield (25).

4. The drilling machine fixture with high precision adjustment according to claim 1, characterized in that: A gear seat (31) is fixedly connected to the bottom plate (10) at a side of the detection housing (20) away from the chuck frame (11); a disc-shaped end cover (32) is fixedly connected to the side of the gear seat (31) close to the detection housing (20); an end of the rotating shaft (13) is rotatably connected to the end cover (32) and extends into the gear seat (31); a coarse adjustment hand wheel (39) is fixedly connected to the rotating shaft (13) at a position between the detection housing (20) and the gear seat (31); and a locking screw (33) is threadedly connected to the end cover (32) at a corresponding position of the rotating shaft (13).

5. The drilling machine fixture with high precision adjustment according to claim 4, characterized in that: A gear ring (34) is fixedly connected to the gear seat (31), and one end of the rotating shaft (13) extending into the gear seat (31) is fixedly connected to a sun gear (35), and a plurality of planetary gears (36) are circumferentially distributed and meshed between the sun gear (35) and the gear ring (34). A planetary carrier (37) is rotatably connected to the side of the gear seat (31) away from the detection housing (20), and the planetary carrier (37) is rotatably connected to each planetary gear (36). One end of the planetary carrier (37) extending out of the gear seat (31) is fixedly connected to a fine adjustment hand wheel (38).

6. The drilling machine fixture with high precision adjustment according to claim 1, characterized in that: Two groups of rod seats (14) are symmetrically distributed and fixedly connected on both sides of the three-jaw chuck (12) on the bottom plate (10), wherein a slide rod (16) is fixedly connected between the rod seats (14) of one group, and a screw rod (15) is rotatably connected between the rod seats (14) of the other group. One end of the screw rod (15) extending out of the rod seat (14) is fixedly connected to a thimble adjusting wheel (17), and an thimble seat (18) is slidably connected to the slide rod (16). The thimble seat (18) is threadedly connected to the screw rod (15), and a thimble (19) is rotatably connected to the side of the thimble seat (18) close to the three-jaw chuck (12).

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