Cutter handle structure of numerical control machining center

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a cutter handle structure of a numerical control machining center, which comprises a cutter frame, a cutter handle with one end extending to the bottom is arranged between the left side and the right side of the inner wall of the cutter frame, and a cutter head is arranged at the bottom of the cutter handle. According to the knife handle structure of the numerical control machining center, the knife handle is inserted into the knife rest, the knife handle and the knife rest are fixed through a bolt, then a rotary knob is screwed to drive a threaded rod to rotate, then a sliding block and a rack are driven to move rightwards, and the rack can drive a rotating shaft and a rotating disc to rotate anticlockwise through a gear in the moving process; a connecting plate, a sliding plate and a driving wedge-shaped block are driven to integrally move upwards through a shifting rod and a moving frame, the driving wedge-shaped block extrudes a driven wedge-shaped block in the moving process, and then two positioning rods are driven to move oppositely to extend into two positioning grooves correspondingly for secondary fixing, so that the fixing effect between the knife handle and the knife rest is improved, and the service life of the knife handle and the knife rest is prolonged. The knife handle is prevented from falling off from the knife rest.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a tool handle structure of a numerical control machining center. Background Art

[0002] As a part of CNC machining center, CNC machine tool is an automated machine tool equipped with a program control system, and the tool is one of the necessary tools of CNC machine tool. The tool is divided into milling cutter, drilling cutter and turning tool, etc., which can perform different types of processing on workpieces with different processing requirements. The installation methods of these tools are very different due to different processing methods. The tool holder is fixed by bolts, and the tool holder can also be clamped by a chuck. However, after long-term use, the fixing bolts of existing bolt-fixed tools are very easy to loosen. Since the tool holder on the tool is only fixed by bolts, it is very easy for the tool to fall off during the cutting process with the workpiece. If the tool falls off during the rotation process, it is easy to cause harm to the operator, which is very dangerous. Therefore, a tool holder structure for CNC machining center is proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a tool holder structure for a CNC machining center, which has the advantages of good fixing effect, etc., and solves the problem that the fixing bolts of the existing bolt-fixed tools are easily loosened after long-term use. Since the tool holder on the tool is only fixed by bolts, the tool is very likely to fall off during the cutting process with the workpiece. If the tool falls off during the rotation processing, it is easy to cause injury to the operator, which is very dangerous.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose of good fixing effect, the utility model provides the following technical solutions: a tool handle structure of a CNC machining center, comprising a tool holder, a tool handle with one end extending to the bottom thereof is arranged between the left and right sides of the inner wall of the tool holder, a tool head is arranged at the bottom of the tool handle, bolts with one end extending into the inside of the tool handle and threadedly connected to the tool handle are arranged on the left and right sides of the tool holder, a mounting cavity located between two bolts is arranged inside the tool handle, a traction component is arranged between the front and rear sides of the inner wall of the mounting cavity, the left and right sides of the traction component are movably connected to the left and right sides of the inner wall of the mounting cavity respectively, a driving component with one end meshed with the traction component is arranged on the inner bottom wall of the mounting cavity, the right side of the driving component is movably connected to the right side of the inner wall of the mounting cavity and the left side of the driving component extends to the left side of the tool holder, positioning grooves located above the bolts are arranged on the left and right sides of the inner wall of the tool holder, positioning components with one end extending into the inside of the two positioning grooves are arranged on the left and right sides of the top wall of the mounting cavity, and a transmission component with one end fitted with the two positioning components and the other end fixedly connected to the traction component is arranged between the left and right sides of the inner wall of the mounting cavity.

[0007] Preferably, the traction assembly includes a rotating shaft, a rotating shaft is movably installed between the front and rear sides of the inner wall of the installation cavity, a gear is fixedly installed on the outer side of the rotating shaft, a turntable located in front of the gear is fixedly installed on the outer side of the rotating shaft, a lever located above the rotating shaft is fixedly installed on the front side of the turntable, and a movable frame is movably installed between the left and right sides of the inner wall of the installation cavity and is sleeved on the outer side of the lever.

[0008] Preferably, the driving assembly includes a threaded rod, and a threaded rod is movably installed on the left side of the tool handle, which is located below the tool holder and has one end extending into the installation cavity and movably connected to the right side of the inner wall of the installation cavity. The threaded rod is located below the gear, and the outer side of the threaded rod is threadedly connected to a slider with one end movably connected to the bottom wall of the installation cavity, a rack meshing with the gear is fixedly installed on the top of the slider, and a knob is fixedly installed on the left side of the threaded rod.

[0009] Preferably, the positioning assembly includes a driven wedge block, and driven wedge blocks are movably installed on the left and right sides of the top wall in the installation cavity, and positioning rods with one end extending into the two positioning grooves are fixedly installed on the opposite sides of the two driven wedge blocks, and return springs with one end fixedly connected to the left and right sides of the inner wall of the installation cavity and sleeved on the outside of the positioning rod are fixedly installed on the opposite sides of the two driven wedge blocks.

[0010] Preferably, the transmission assembly includes a slide plate, and a slide plate located between the driven wedge block and the moving frame is movably installed between the left and right sides of the inner wall of the installation cavity, and a connecting plate with one end fixedly connected to the top of the moving frame is fixedly installed at the bottom of the slide plate, and driving wedge blocks with one end respectively fitted with the bottom of the two driven wedge blocks are fixedly installed on the left and right sides of the top of the slide plate.

[0011] Preferably, thread grooves are provided on both the left and right sides of the knife handle, and the bolt is threadably connected to the knife handle via the thread grooves.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a tool handle structure for a CNC machining center, which has the following beneficial effects:

[0014] The tool holder structure of the CNC machining center is achieved by inserting the tool holder into the tool holder and fixing the tool holder to the tool holder with bolts, then turning the knob to drive the threaded rod to rotate, thereby driving the slider and the rack to move right, and the rack will drive the rotating shaft and the turntable to rotate counterclockwise through the gear during the movement, and then drive the connecting plate, the slide plate and the driving wedge block to move upward as a whole through the lever and the moving frame, and the driving wedge block will squeeze the driven wedge block during the movement, thereby driving the two positioning rods to move back to back and extend to the inside of the two positioning grooves respectively, for secondary fixation, so as to improve the fixing effect between the tool holder and the tool holder and prevent the tool holder from falling off from the tool holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a front cross-sectional view of the drive assembly of the utility model;

[0017] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0018] In the figure: 1 tool holder, 2 tool handle, 3 tool head, 4 bolt, 5 mounting cavity, 6 traction assembly, 61 rotating shaft, 62 gear, 63 turntable, 64 lever, 65 moving frame, 7 driving assembly, 71 threaded rod, 72 slider, 73 rack, 74 knob, 8 positioning groove, 9 positioning assembly, 91 driven wedge block, 92 positioning rod, 93 return spring, 10 transmission assembly, 101 slide plate, 102 connecting plate, 103 driving wedge block. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3The utility model provides a technical solution: a tool handle structure of a CNC machining center, including a tool holder 1, a tool handle 2 with one end extending to the bottom thereof is movably installed between the left and right sides of the inner wall of the tool holder 1, a tool head 3 is fixedly installed at the bottom of the tool handle 2, bolts 4 with one end extending to the inside of the tool handle 2 and threadedly connected to the tool handle 2 are movably installed on the left and right sides of the tool holder 1, thread grooves are provided on the left and right sides of the tool handle 2, and the bolts 4 are threadedly connected to the tool handle 2 through the thread grooves.

[0021] A mounting cavity 5 located between two bolts 4 is provided inside the knife handle 2, a traction assembly 6 is movably installed between the front and rear sides of the inner wall of the mounting cavity 5, and the left and right sides of the traction assembly 6 are movably connected to the left and right sides of the inner wall of the mounting cavity 5 respectively, the traction assembly 6 comprises a rotating shaft 61, a rotating shaft 61 is movably installed between the front and rear sides of the inner wall of the mounting cavity 5, a first bearing is fixedly installed on the front and rear sides of the inner wall of the mounting cavity 5, the rotating shaft 61 is rotatably connected to the inner wall of the mounting cavity 5 through the first bearing, a gear 62 is fixedly installed on the outer side of the rotating shaft 61, a turntable 63 located in front of the gear 62 is fixedly installed on the outer side of the rotating shaft 61, a lever 64 located above the rotating shaft 61 is fixedly installed on the front side of the turntable 63, and a movable frame 65 sleeved on the outer side of the lever 64 is movably installed between the left and right sides of the inner wall of the mounting cavity 5.

[0022] A driving assembly 7 having one end meshed with the traction assembly 6 is movably installed on the inner bottom wall of the mounting cavity 5, the right side of the driving assembly 7 is movably connected to the right side of the inner wall of the mounting cavity 5 and the left side of the driving assembly 7 extends to the left side of the tool handle 2, the driving assembly 7 includes a threaded rod 71, and a threaded rod 71 located below the tool holder 1 and one end of which extends into the mounting cavity 5 and is movably connected to the right side of the inner wall of the mounting cavity 5 is movably installed on the left side of the tool handle 2, the threaded rod 71 is located below the gear 62, a second bearing is fixedly installed on the bottom right side of the inner wall of the mounting cavity 5, the threaded rod 71 is rotatably connected to the bottom right side of the inner wall of the mounting cavity 5 through the second bearing, the outer side of the threaded rod 71 is threadedly connected to a slider 72 having one end movably connected to the inner bottom wall of the mounting cavity 5, a threaded hole matching the threaded rod 71 is provided inside the slider 72, a rack 73 meshing with the gear 62 is fixedly installed on the top of the slider 72, and a knob 74 is fixedly installed on the left side of the threaded rod 71.

[0023] The left and right sides of the inner wall of the tool holder 1 are provided with positioning grooves 8 located above the bolts 4, and the left and right sides of the inner top wall of the installation cavity 5 are movably installed with positioning components 9, one end of which extends to the inside of the two positioning grooves 8 respectively. The positioning components 9 include driven wedge blocks 91, and the left and right sides of the inner top wall of the installation cavity 5 are movably installed with driven wedge blocks 91. The opposite sides of the two driven wedge blocks 91 are fixedly installed with positioning rods 92, one end of which extends to the inside of the two positioning grooves 8 respectively. The opposite sides of the two driven wedge blocks 91 are fixedly installed with return springs 93, one end of which is fixedly connected to the left and right sides of the inner wall of the installation cavity 5 and is sleeved on the outside of the positioning rods 92.

[0024] A transmission assembly 10 is movably installed between the left and right sides of the inner wall of the installation cavity 5, with one end being in contact with the two positioning assemblies 9 and the other end being fixedly connected to the traction assembly 6. The transmission assembly 10 includes a slide plate 101. A slide plate 101 is movably installed between the left and right sides of the inner wall of the installation cavity 5 and is located between the driven wedge block 91 and the moving frame 65. A connecting plate 102 is fixedly installed at the bottom of the slide plate 101 at one end being fixedly connected to the top of the moving frame 65. Driving wedge blocks 103, each of which has one end in contact with the bottom of the two driven wedge blocks 91, are fixedly installed on both sides of the top of the slide plate 101.

[0025] The threaded rod 71 is rotated by turning the knob 74, thereby driving the slider 72 and the rack 73 to move rightward. The rack 73 drives the shaft 61 and the turntable 63 to rotate counterclockwise through the gear 62, and then drives the connecting plate 102, the slide plate 101 and the driving wedge block 103 to move upward as a whole through the lever 64 and the moving frame 65. The driving wedge block 103 squeezes the driven wedge block 91 during the movement, thereby driving the two positioning rods 92 to move back to each other and extend to the inside of the two positioning grooves 8 respectively, so as to perform secondary fixation, thereby improving the knife The fixing effect between the handle 2 and the tool holder 1 prevents the handle 2 from falling off the tool holder 1. When the handle 2 needs to be disassembled, it is only necessary to turn the knob 74 in the opposite direction to drive the slider 72 to move left, thereby driving the rotating shaft 61 and the turntable 63 to rotate clockwise to drive the transmission assembly 10 to move downward as a whole to release the position restriction of the driven wedge block 91. Under the elastic force of the reset spring 93, the two driven wedge blocks 91 and the two positioning rods 92 will be driven to move relative to each other until the positioning rod 92 moves out of the inside of the positioning groove 8, thereby releasing the fixation between the handle 2 and the tool holder 1.

[0026] In summary, the tool handle structure of the CNC machining center is to insert the tool handle 2 into the tool holder 1, and fix the tool handle 2 and the tool holder 1 by the bolt 4, and then drive the threaded rod 71 to rotate by turning the knob 74, thereby driving the slider 72 and the rack 73 to move right, and the rack 73 will drive the rotating shaft 61 and the turntable 63 to rotate counterclockwise through the gear 62 during the movement, and then drive the connecting plate 102, the slide plate 101 and the driving wedge block 103 to move upward as a whole through the lever 64 and the moving frame 65, and the driving wedge block 103 will squeeze the driven wedge block 103 during the movement. The wedge block 91 then drives the two positioning rods 92 to move back to each other and extend to the inside of the two positioning grooves 8 respectively for secondary fixation, thereby improving the fixing effect between the tool handle 2 and the tool holder 1 and preventing the tool handle 2 from falling off from the tool holder 1, solving the problem that the fixing bolts of the existing bolt-fixed tools are easily loosened after long-term use. Since the tool handle on the tool is only fixed by bolts, it is very easy for the tool to fall off during the cutting process with the workpiece. If the tool falls off during the rotation process, it is easy to cause harm to the operator, which is very dangerous.

[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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] 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 tool handle structure for a numerical control machining center, comprising a tool holder (1), a tool holder (2) having one end extending to the bottom thereof is arranged between the left and right sides of the inner wall of the tool holder (1), a tool head (3) is arranged at the bottom of the tool holder (2), and bolts (4) having one end extending into the inside of the tool holder (2) and being threadedly connected to the tool holder (2) are arranged on both the left and right sides of the tool holder (1), wherein: The handle (2) is provided with a mounting cavity (5) located between the two bolts (4), a traction assembly (6) is provided between the front and rear sides of the inner wall of the mounting cavity (5), the left and right sides of the traction assembly (6) are respectively movably connected to the left and right sides of the inner wall of the mounting cavity (5), a driving assembly (7) having one end engaged with the traction assembly (6) is provided on the inner bottom wall of the mounting cavity (5), the right side of the driving assembly (7) is movably connected to the right side of the inner wall of the mounting cavity (5) and the left side of the driving assembly (7) extends to the left side of the handle (2), the inner wall of the tool holder (1) is provided with positioning grooves (8) located above the bolts (4) on the left and right sides of the inner wall of the mounting cavity (5), the positioning assemblies (9) having one end extending into the two positioning grooves (8) on the left and right sides of the inner top wall of the mounting cavity (5), and a transmission assembly (10) having one end engaged with the two positioning assemblies (9) and the other end fixedly connected to the traction assembly (6) is provided between the left and right sides of the inner wall of the mounting cavity (5).

2. The tool handle structure of a CNC machining center according to claim 1, characterized in that: The traction assembly (6) comprises a rotating shaft (61), the rotating shaft (61) is movably mounted between the front and rear sides of the inner wall of the installation cavity (5), a gear (62) is fixedly mounted on the outer side of the rotating shaft (61), a rotating disk (63) located in front of the gear (62) is fixedly mounted on the outer side of the rotating shaft (61), a lever (64) located above the rotating shaft (61) is fixedly mounted on the front side of the rotating disk (63), and a movable frame (65) sleeved on the outer side of the lever (64) is movably mounted between the left and right sides of the inner wall of the installation cavity (5).

3. The tool handle structure of a CNC machining center according to claim 2, characterized in that: The drive assembly (7) comprises a threaded rod (71), the left side of the tool handle (2) being movably mounted with a threaded rod (71) located below the tool holder (1) and having one end extending into the interior of the mounting cavity (5) and movably connected to the right side of the inner wall of the mounting cavity (5), the threaded rod (71) being located below the gear (62), the outer side of the threaded rod (71) being threadedly connected to a slider (72) having one end movably connected to the inner bottom wall of the mounting cavity (5), the top of the slider (72) being fixedly mounted with a rack (73) meshing with the gear (62), and the left side of the threaded rod (71) being fixedly mounted with a knob (74).

4. The tool handle structure of a CNC machining center according to claim 1, characterized in that: The positioning assembly (9) comprises a driven wedge block (91), and the driven wedge blocks (91) are movably mounted on the left and right sides of the top wall of the installation cavity (5), and the two driven wedge blocks (91) are fixedly mounted on the opposite sides thereof with a positioning rod (92) having one end extending into the inside of the two positioning grooves (8), and the two driven wedge blocks (91) are fixedly mounted on the opposite sides thereof with a return spring (93) having one end fixedly connected to the left and right sides of the inner wall of the installation cavity (5) and sleeved on the outside of the positioning rod (92).

5. The tool handle structure of a CNC machining center according to claim 4, characterized in that: The transmission assembly (10) comprises a slide plate (101), and the slide plate (101) is movably installed between the left and right sides of the inner wall of the installation cavity (5) and is located between the driven wedge block (91) and the moving frame (65). A connecting plate (102) having one end fixedly connected to the top of the moving frame (65) is fixedly installed at the bottom of the slide plate (101), and a driving wedge block (103) having one end respectively abutting against the bottom of two driven wedge blocks (91) is fixedly installed on the left and right sides of the top of the slide plate (101).

6. The tool handle structure of a CNC machining center according to claim 1, characterized in that: The left and right sides of the knife handle (2) are both provided with thread grooves, and the bolt (4) is threadedly connected to the knife handle (2) via the thread grooves.

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