Turnover flat grinding clamp for CBN cutter machining

Abstract

The utility model discloses a turnover plane grinding clamp for machining a CBN cutter, which comprises a clamp rack, a first turnover plate is arranged at one end of the clamp rack, a second turnover plate is arranged at the other end of the clamp rack, clamping and fixing mechanisms are arranged on the inner side surfaces of the first turnover plate and the second turnover plate, and the clamping and fixing mechanisms are arranged on the inner side surfaces of the first turnover plate and the second turnover plate. A flat grinding operation machine head is installed below the clamping and fixing mechanism and is of a lifting adjusting type structure. According to the CBN tool turnover device, the turnover plate structure convenient to drive and control is arranged, the clamping and fixing mechanisms are installed on the surfaces of the inner sides of the two turnover plates, the CBN tool can be conveniently and rapidly clamped and locked, and under driving of the servo motor, the CBN tool which is clamped and fixed can be subjected to turnover control and adjustment; and therefore, multi-angle plane grinding operation can be conveniently conducted on the CBN tool through the plane grinding operation mechanism which can be adjusted in a lifting mode below, the machining operation precision of the CBN tool is improved, and the forming quality of the CBN tool is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CBN tool processing, in particular to a flippable flat grinding fixture for CBN tool processing. Background Art

[0002] CBN crystals and diamond crystals are both sphalerite type, with similar lattice constants and the same chemical bond type. Therefore, CBN has a hardness and compressive strength close to that of diamond. Because it is composed of N and B atoms, it has higher thermal stability and chemical inertness than diamond. CBN materials are often used as tool heads for precision machining. In the mass production process of CBN tools, the tools need to be fixed and a fixture is needed.

[0003] The Chinese authorized patent document with announcement number CN207736553U discloses a positioning fixture for ultra-high hardness CBN tool processing, including a platform, the top of the platform is fixedly connected to a guide base, the side wall of the guide base is movably connected to a sliding fixture, the upper side of the sliding fixture is fixedly connected to a connecting frame, the top of the platform is fixedly connected to a limiting frame, a top frame is movably connected between the limiting frames, an active cavity is opened inside the top frame, one end of the connecting frame is fixedly connected to a slider, a pulley is fixedly installed on the slider, a slide rail is fixedly installed in the active cavity, the pulley is directly opposite to the slide rail and is movably connected, and an electric telescopic rod is fixedly connected to the upper part of the top frame. The utility model relates to the field of tool processing. The utility model has a simple structure, is convenient and practical, has accurate positioning, can be quickly loaded and unloaded, and self-locking clamped, thus improving processing quality and efficiency, and is easy to promote and apply.

[0004] The above-mentioned prior art cannot quickly position, clamp and flip the CBN tool, resulting in limited processing angles of the CBN tool, making it impossible to perform multi-angle flat grinding operations on it. Therefore, it is necessary to develop a flippable flat grinding fixture for CBN tool processing. Utility Model Content

[0005] The utility model aims to provide a reversible flat grinding fixture for CBN tool processing, so as to solve the problem that the prior art proposed in the above background technology cannot quickly position, clamp and flip the CBN tool, resulting in limited processing angles of the CBN tool, thereby making it impossible to perform multi-angle flat grinding operations on it.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reversible flat grinding fixture for CBN tool processing, comprising a fixture frame, a first flip plate is installed at one end of the fixture frame, a second flip plate is installed at the other end of the fixture frame, a clamping and fixing mechanism is installed on the inner side surfaces of the first flip plate and the second flip plate, a flat grinding operation head is installed below the clamping and fixing mechanism, and the flat grinding operation head is a liftable and adjustable structure.

[0007] Preferably, a bearing bracket is fixedly connected to the center of the outer surface of the first flip plate through a first rotating shaft, a bearing member is installed inside the bearing bracket for connecting and fixing with the first rotating shaft, and the bottom of the bearing bracket is fixedly connected to the clamp frame through screws.

[0008] Preferably, a driven wheel is connected to the center of the outer surface of the second flip plate via a second rotating shaft, a servo motor is installed on the clamp frame, the output end of the servo motor is connected to a driving wheel via a rotating shaft, and the surface of the driving wheel is connected to the driven wheel via a belt.

[0009] Preferably, the clamping and fixing mechanism includes a limiting clamping plate, a clamping and fixing screw, an internal threaded tube, a clamping block and a knob.

[0010] Preferably, the knob is mounted and fixed on the top end surface of the clamping and fixing screw, the clamping block is mounted and fixed on the lower end surface of the clamping and fixing screw, the limiting clamp is welded and fixed to the inner surfaces of the first flip plate and the second flip plate, the internal threaded tube is mounted and fixed on the limiting clamp, and the clamping and fixing screw is tightly screwed and fixed to the internal threaded tube through threads.

[0011] Preferably, a barless cylinder is installed on the clamp frame, a lifting sleeve is installed on the surface of the barless cylinder, and a supporting base is installed on the bottom of the barless cylinder.

[0012] Preferably, a flat grinding drive motor is installed inside the lifting sleeve, and the output end of the flat grinding drive motor is fixedly connected to a flat grinding operation head via a transmission shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with a flip plate structure with convenient drive control, and clamping and fixing mechanisms are installed on the inner surfaces of the two flip plates, which can be used to conveniently and quickly clamp and lock the CBN tool. Under the drive of the servo motor, the clamped and fixed CBN tool can be flipped and controlled to adjust, so that the flat grinding operation mechanism with adjustable lifting and lowering function below is convenient to perform multi-angle flat grinding operation on the CBN tool, thereby improving the processing accuracy of the CBN tool, thereby further improving the forming quality of the CBN tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the fixture frame of the utility model;

[0016] Figure 2 This is a schematic diagram of the front structure of the fixture frame of the utility model;

[0017] Figure 3 This is a schematic diagram of the side structure of the fixture frame of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the clamping and fixing mechanism of the utility model.

[0019] In the figure: 1. first flip plate; 2. first rotating shaft; 3. bearing bracket; 4. clamp frame; 5. barless cylinder; 6. lifting sleeve; 7. flat grinding operation head; 8. second flip plate; 9. second rotating shaft; 10. driven wheel; 11. belt; 12. driving wheel; 13. servo motor; 14. transmission shaft; 15. support base; 16. flat grinding drive motor; 17. knob; 18. clamping and fixing screw; 19. internal threaded pipe; 20. limit clamp; 21. clamp block; 22. clamping and fixing mechanism. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4 The utility model provides an embodiment: a reversible flat grinding fixture for CBN tool processing, including a fixture frame 4, a first flip plate 1 is installed at one end of the fixture frame 4, and a second flip plate 8 is installed at the other end of the fixture frame 4. The inner surfaces of the first flip plate 1 and the second flip plate 8 are both installed with a clamping and fixing mechanism 22, and a flat grinding operation head 7 is installed below the clamping and fixing mechanism 22. The flat grinding operation head 7 is a liftable and adjustable structure.

[0022] Furthermore, a bearing bracket 3 is fixedly connected to the center of the outer surface of the first flip plate 1 through the first rotating shaft 2, and a bearing member is installed inside the bearing bracket 3 for connecting and fixing with the first rotating shaft 2. The bottom of the bearing bracket 3 is fixedly connected to the clamp frame 4 through screws. Under the action of the first rotating shaft 2, the first flip plate 1 can be flexibly flipped and adjusted.

[0023] Furthermore, a driven wheel 10 is connected to the center of the outer surface of the second flip plate 8 through a second rotating shaft 9, a servo motor 13 is installed on the clamp frame 4, the output end of the servo motor 13 is connected to a driving wheel 12 through a rotating shaft, and the surface of the driving wheel 12 is connected to the driven wheel 10 through a belt 11. Under the drive of the servo motor 13, the driving wheel 12 can be driven and controlled to drive the driven wheel 10 for transmission, so that the second flip plate 8 can be flipped and controlled.

[0024] Furthermore, the clamping and fixing mechanism 22 includes a limiting clamp 20, a clamping and fixing screw 18, an internal threaded tube 19, a clamping block 21 and a knob 17. The knob 17 is installed and fixed on the top surface of the clamping and fixing screw 18, and the clamping block 21 is installed and fixed on the lower end surface of the clamping and fixing screw 18. The limiting clamp 20 is welded and fixed to the inner surfaces of the first flip plate 1 and the second flip plate 8, and the internal threaded tube 19 is installed and fixed on the limiting clamp 20. The clamping and fixing screw 18 is tightly screwed and fixed with the internal threaded tube 19 through threads. The clamping and fixing screw 18 and the internal threaded tube 19 are screwed and adjusted by using the knob 17 to cause the clamping and fixing screw 18 to make linear movement in the vertical direction, thereby causing the clamping block 21 to quickly clamp and lock the CBN tool placed between the limiting clamps 20, thereby achieving the advantages of convenient and quick clamping and fixing.

[0025] Furthermore, a barless cylinder 5 is installed on the clamp frame 4, and a lifting sleeve 6 is installed on the surface of the barless cylinder 5. A supporting base 15 is installed on the bottom of the barless cylinder 5. A flat grinding drive motor 16 is installed inside the lifting sleeve 6. The output end of the flat grinding drive motor 16 is fixedly connected to the flat grinding operation head 7 through a transmission shaft 14. By turning on the barless cylinder 5 to drive and control the lifting sleeve 6 for lifting and adjustment, the installation height of the flat grinding drive motor 16 can be adjusted. Under the drive of the flat grinding drive motor 16, the flat grinding operation head 7 is driven to rotate rapidly, so that the CBN tool clamped and fixed above can be flat ground.

[0026] Working principle: When in use, a first flip plate 1 is installed at one end of the clamp frame 4, and a second flip plate 8 is installed at the other end of the clamp frame 4. The inner surfaces of the first flip plate 1 and the second flip plate 8 are both installed with a clamping and fixing mechanism 22. The knob 17 is used to control and adjust the clamping and fixing screw 18 and the internal threaded tube 19 to threadedly connect, so that the clamping and fixing screw 18 is prompted to make linear motion in the vertical direction, thereby prompting the clamping block 21 to quickly clamp and lock the CBN tool placed between the limit clamping plates 20, which has the advantage of convenient and fast clamping and fixing. Under the drive of the servo motor 13, the driving wheel 12 can be driven to drive the driven wheel The wheel 10 is driven to control and adjust the flipping of the second flip plate 8, so as to drive the entire clamped and fixed CBN tool to flip. A flat grinding machine head 7 is installed below the clamping and fixing mechanism 22. By opening the barless cylinder 5 to drive and control the lifting sleeve 6 for lifting and adjusting, the installation height of the flat grinding drive motor 16 can be adjusted. The flat grinding machine head 7 is driven by the flat grinding drive motor 16 to rotate rapidly, so that the CBN tool clamped and fixed above can be flat ground, thereby improving the processing accuracy of the CBN tool, thereby further improving the forming quality of the CBN tool.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art. In addition, the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, so no specific description is given here.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reversible flat grinding fixture for CBN tool processing, comprising a fixture frame (4), characterized in that: A first flip plate (1) is installed at one end of the clamp frame (4), and a second flip plate (8) is installed at the other end of the clamp frame (4). A clamping and fixing mechanism (22) is installed on the inner surface of the first flip plate (1) and the second flip plate (8). A flat grinding machine head (7) is installed below the clamping and fixing mechanism (22). The flat grinding machine head (7) is a liftable and adjustable structure.

2. The reversible flat grinding fixture for CBN tool processing according to claim 1 is characterized in that: A bearing bracket (3) is fixedly connected to the center of the outer surface of the first flip plate (1) via a first rotating shaft (2); a bearing member is installed inside the bearing bracket (3) for being connected and fixed to the first rotating shaft (2); and the bottom of the bearing bracket (3) is fixedly connected to the clamp frame (4) via screws.

3. The reversible flat grinding fixture for CBN tool processing according to claim 1, characterized in that: A driven wheel (10) is connected to the center of the outer surface of the second flip plate (8) via a second rotating shaft (9); a servo motor (13) is installed on the clamp frame (4); the output end of the servo motor (13) is connected to a driving wheel (12) via a rotating shaft; and the surface of the driving wheel (12) is connected to the driven wheel (10) via a belt (11).

4. The reversible flat grinding fixture for CBN tool processing according to claim 1 is characterized in that: The clamping and fixing mechanism (22) comprises a limiting clamping plate (20), a clamping and fixing screw rod (18), an internally threaded tube (19), a clamping block (21) and a knob (17).

5. The reversible flat grinding fixture for CBN tool processing according to claim 4 is characterized in that: The knob (17) is mounted and fixed on the top end surface of the clamping and fixing screw (18), the clamping block (21) is mounted and fixed on the lower end surface of the clamping and fixing screw (18), the limiting clamping plate (20) is welded and fixed on the inner side surfaces of the first flip plate (1) and the second flip plate (8), the internal threaded tube (19) is mounted and fixed on the limiting clamping plate (20), and the clamping and fixing screw (18) is tightly screwed and fixed to the internal threaded tube (19) through threads.

6. The reversible flat grinding fixture for CBN tool processing according to claim 1, characterized in that: A barless cylinder (5) is installed on the clamp frame (4), a lifting sleeve (6) is installed on the surface of the barless cylinder (5), and a supporting base (15) is installed on the bottom of the barless cylinder (5).

7. The reversible flat grinding fixture for CBN tool processing according to claim 6 is characterized in that: A flat grinding drive motor (16) is installed inside the lifting sleeve (6), and an output end of the flat grinding drive motor (16) is fixedly connected to a flat grinding machine head (7) via a transmission shaft (14).

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