Tool bit switching mechanism of numerical control equipment

Abstract

The utility model discloses a tool bit switching mechanism of numerical control equipment, which comprises a power device, and the power device comprises a casing, an electromagnetic coil, a plurality of guide posts, a magnetic object, a driving shaft, an upper spring and a lower spring. The machine shell is provided with an annular cavity and a middle cavity surrounded by the annular cavity, and the electromagnetic coil is wound in the annular cavity. The driving shaft is fixed to the first end of the magnetic object, and the outer end of the driving shaft extends out of the machine shell. The upper spring is arranged in the upper cavity and arranged outside the driving shaft in a sleeving mode, the first end of the upper spring abuts against the annular face of the upper cavity, and the second end of the upper spring abuts against the first end face of the magnetic object. The lower spring is arranged in the lower cavity, the first end of the lower spring abuts against the second end face of the magnetic object, and the second end of the lower spring abuts against the bottom face of the lower cavity. According to the tool bit switching mechanism, the compressing and wire arranging mechanism and the cutter mechanism are integrated in one mechanism, the equipment size is reduced, and control procedures are reduced. The power device is controlled by combination of electromagnetism and a spring, so that the tool bit has buffering power, and rigid collision is avoided.

Description

Technical Field

[0001] The utility model relates to numerical control equipment, in particular to a tool head switching mechanism of the numerical control equipment. Background Art

[0002] CNC equipment uses a computer to execute the motion trajectory of the equipment and the timing logic control function of the operation of peripherals according to a pre-stored control program, and the generated micro instructions are transmitted to the servo drive device to drive the motor or hydraulic actuator to drive the equipment to operate.

[0003] In the prior art, when soldering cables and wires, the cables and wires need to be stripped to expose the wire parts. Since the wires will be forked after stripping, they need to be straightened and then cut to a set length to allow the wires to be better welded to the circuit board or other workpieces.

[0004] The traditional method is to set up two processes in the CNC equipment, namely the clamping line mechanism and the cutting mechanism, and the two mechanisms are divided into two stations. This results in the data equipment needing an additional control program, which in turn leads to an increase in the size of the CNC equipment.

[0005] In addition, the traditional wire clamping mechanism and cutter mechanism are both rigidly controlled, and the cutter height needs to be adjusted before cutting the wire.

[0006] In view of this, it is necessary to improve traditional CNC equipment. Utility Model Content

[0007] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a tool head switching mechanism for a numerical control device, the purpose of designing the tool head switching mechanism is to reduce the control program and reduce the size of the device.

[0008] In order to solve the above technical problems, the utility model is implemented by the following scheme: a tool head switching mechanism of a numerical control device of the utility model includes a power device, and the power device includes:

[0009] A casing, the casing comprising an annular cavity and a middle cavity surrounded by the annular cavity, wherein the annular cavity and the middle cavity are separated;

[0010] An electromagnetic coil, which is wound in the annular cavity;

[0011] A plurality of guide pillars, which are arranged along the length direction of the middle cavity and are fixed in a ring array in the middle cavity;

[0012] A magnetic object movably mounted on each guide post, the magnetic object partitioning the middle cavity into an upper cavity and a lower cavity;

[0013] A drive shaft, the drive shaft being fixed to the first end of the magnetic object and the outer end of the drive shaft extending out of the housing;

[0014] An upper spring, the upper spring is arranged in the upper cavity and sleeved outside the driving shaft, the first end of the upper spring abuts against the annular surface of the upper cavity, and the second end of the upper spring abuts against the first end surface of the magnetic object;

[0015] A lower spring is arranged in the lower cavity, wherein the first end of the lower spring abuts against the second end surface of the magnetic object, and the second end of the lower spring abuts against the bottom surface of the lower cavity.

[0016] Furthermore, the magnetic object is a cylindrical structure, which is provided with guide holes distributed in a ring array, and each guide hole is one-to-one sleeved outside each guide column so that the magnetic object can move along the guide column.

[0017] Furthermore, the height at which the electromagnetic coil is wound is sufficient to drive the magnetic object to move when the electromagnetic coil is powered on.

[0018] Furthermore, the tool head switching mechanism also includes:

[0019] A Y-axis moving mechanism, the Y-axis moving mechanism comprises a motor drive source, a screw assembly and a movable block assembly, the movable block assembly is screwed to the screw assembly, and the motor drive source drives the screw connected to the screw assembly;

[0020] The rack switching mechanism is fixed to the movable block assembly via a bracket assembly, and the drive shaft is drivingly connected to the rack switching mechanism.

[0021] Furthermore, the bracket assembly includes a connecting block and a bracket mounted on the lower end surface of the connecting block, both sides of the bracket are fixed with Z-guide grooves, the two Z-guide grooves are arranged in a back-to-back manner, and the power device is mounted on the bracket through a vertical block;

[0022] The rack switching mechanism comprises:

[0023] Two sets of rack assemblies are slidably connected to two Z guide grooves respectively;

[0024] A gear, which is rotatably mounted on the lower end of the bracket, and whose two sides are respectively meshed and connected with two sets of rack assemblies;

[0025] The two groups of cutter assemblies are respectively installed at the lower ends of the two groups of rack assemblies.

[0026] Furthermore, the rack assembly includes a movable guide rail and a rack fixed to the lower end of the movable guide rail, wherein the upper end of one of the movable guide rails is fixed to the driving shaft via a connecting piece, and the gears are respectively engaged with the two racks.

[0027] Furthermore, the cutter assembly includes a cutter head fixing portion and a cutter head detachably mounted on the cutter head fixing portion.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] 1. The cutter head switching mechanism of the utility model integrates the line pressing mechanism and the cutter mechanism into one mechanism, which reduces the equipment volume and the control program.

[0030] 2. The power device of the utility model adopts electromagnetic and spring combined control to make the cutter head have buffer force to avoid rigid collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural diagram of the tool head switching mechanism of the utility model.

[0032] Figure 2 It is a side structural diagram of the tool head switching mechanism of the utility model.

[0033] Figure 3 This is a structural diagram of the power device of the utility model.

[0034] Markings in the accompanying drawings: connecting block 6, movable guide rail 7, connecting part 8, power device 9, bracket 10, rack 11, cutter head fixing part 13, cutter head 14, gear 15, Z guide groove 19, Y-axis moving mechanism 20, driving shaft 91, electromagnetic coil 92, housing 93, magnetic object 94, guide column 95, upper spring 96, lower spring 97. DETAILED DESCRIPTION

[0035] 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, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment 1: The specific structure of the utility model is as follows:

[0037] Please refer to the attached Figure 1-3The utility model discloses a tool head switching mechanism of a numerical control device, comprising a power device 9, wherein the power device 9 comprises a housing 93, an electromagnetic coil 92, a plurality of guide pillars 95, a magnetic object 94, a drive shaft 91, an upper spring 96 and a lower spring 97. The housing 93 has an annular cavity and a middle cavity surrounded by the annular cavity, and the annular cavity and the middle cavity are separated; the electromagnetic coil 92 is wound in the annular cavity, and a magnetic field is generated when the electromagnetic coil 92 is energized. A plurality of guide pillars 95 are arranged along the length direction of the middle cavity and the annular array is fixed in the middle cavity, and generally 2-4 guide pillars are arranged to ensure the stable lifting and lowering of the magnetic object 94. The magnetic object 94 can be movably mounted on each guide pillar 95, which separates the middle cavity into an upper cavity and a lower cavity. When the electromagnetic coil 92 is powered on, the magnetic field force generated by the electromagnetic coil 92 will act on the magnetic object 94. The magnetic object 94 is a cylindrical structure, which is provided with guide holes distributed in a ring array. Each guide hole is sleeved outside each guide column 95 one by one so that the magnetic object 94 can move along the guide column 95. The magnetic object 94 moves upward or downward under the action of the magnetic field force. The upward or downward movement of the magnetic object 94 is determined by changing the current direction of the electromagnetic coil 92. The driving shaft 91 is fixed to the first end of the magnetic object 94 and the outer end of the driving shaft 91 extends out of the housing 93; the upper spring 96 is arranged in the upper cavity and sleeved outside the driving shaft 91. The first end of the upper spring 96 abuts against the annular surface of the upper cavity, and the second end of the upper spring 96 abuts against the first end surface of the magnetic object 94; the lower spring 97 is arranged in the lower cavity, and its first end abuts against the second end surface of the magnetic object 94, and its second end abuts against the bottom surface of the lower cavity. The function of the upper spring 96 and the lower spring 97 is to keep the magnetic object 94 in the middle position of the middle cavity when the magnetic object 94 is not affected by the magnetic force.

[0038] The height at which the electromagnetic coil 92 is wound is sufficient to drive the magnetic object 94 to move when the electromagnetic coil 92 is powered on.

[0039] Embodiment 2:

[0040] The tool head switching mechanism further includes a Y-axis moving mechanism 20 and a rack switching mechanism.

[0041] The Y-axis moving mechanism 20 includes a motor drive source, a screw assembly and a movable block assembly. The movable block assembly is screwed to the screw assembly. The motor drive source drives the screw connected to the screw assembly. After the motor drive source is powered on, it can drive the screw to rotate. After the screw rotates, it drives the movable block assembly to move along the Y-axis direction, thereby adjusting the position of the rack switching mechanism. The movable block assembly is also guided by two guide rods.

[0042] The rack switching mechanism is fixed to the movable block assembly via a bracket assembly, and the driving shaft 91 is drivingly connected to the rack switching mechanism.

[0043] The bracket assembly includes a connecting block 6 and a bracket 10 installed on the lower end surface of the connecting block 6. Z-guide grooves 19 are fixed on both sides of the bracket 10. The two Z-guide grooves 19 are arranged back to back. The power device 9 is installed on the bracket 10 through a vertical block.

[0044] The rack switching mechanism comprises:

[0045] Two sets of rack assemblies are slidably connected to two Z guide grooves 19 respectively;

[0046] A gear 15, which is rotatably mounted on the lower end of the bracket 10, and has two sides that are respectively meshed and connected with two sets of rack assemblies;

[0047] The two groups of cutter assemblies are respectively installed at the lower ends of the two groups of rack assemblies.

[0048] The rack assembly includes a movable guide rail 7 and a rack 11 fixed to the lower end of the movable guide rail 7. The upper end of one of the movable guide rails 7 is fixed to the driving shaft 91 through a connecting piece 8, and the gear 15 is meshed with the two racks 11 respectively.

[0049] The cutter assembly includes a cutter head fixing portion 13 and a cutter head 14 detachably mounted on the cutter head fixing portion. The cutter head 14 is a line straightening cutter head and a cutter.

[0050] Embodiment 3:

[0051] The following is the detailed working process of the cutter head switching mechanism of the utility model:

[0052] Step 1: After the stripping mechanism of the CNC equipment strips the cable wire, the exposed wires need to be straightened and then cut to a fixed length. The main control mechanism of the CNC equipment controls the fixture that clamps the cable wire to reach the straightening and cutting knife station.

[0053] Step 2: Before the whole line is completed, the clamping mechanism on the CNC equipment clamps the cables and wires, the power device 9 is powered on, the power device 9 drives the connecting piece 8 to move upward, and the connecting piece 8 drives Figure 2 The rack assembly on the left side moves upward, and through the action of the gear 15, the rack assembly on the right side moves downward. The lower end of the rack assembly on the right side is installed with a wire straightening cutter head, which has a notch. The function of the notch is to gather the forked wires.

[0054] Step three, the Y-axis moving mechanism 20 drives the rack switching mechanism to move, so that the wire straightening cutter head moves along the outer direction of the wire, and the notch straightens the wire into a bundle.

[0055] Step 4: The power device 9 is powered on in the reverse direction, and the power device 9 drives the connecting member 8 to move downward, and the connecting member 8 drives Figure 2The rack assembly on the left side moves downward, and through the action of the gear 15, the rack assembly on the right side moves upward, and then the line straightening cutter head at the lower end of the rack assembly on the right side moves upward, and the cutter head on the left side moves downward and completes the line cutting action.

[0056] In summary, the cutter head switching mechanism of the utility model integrates the line pressing mechanism and the cutter mechanism into one mechanism, which reduces the equipment volume and the control program. The power device of the utility model adopts electromagnetic and spring combination control, so that the cutter head has a buffer force to avoid rigid collision.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tool head switching mechanism for a numerical control device, characterized in that: It comprises a power device (9), wherein the power device (9) comprises: A housing (93), the housing (93) comprising an annular cavity and a middle cavity surrounded by the annular cavity, the annular cavity and the middle cavity being separated; An electromagnetic coil (92), the electromagnetic coil (92) being wound in the annular cavity; A plurality of guide pillars (95), the plurality of guide pillars (95) are arranged along the length direction of the middle cavity and are fixed in a ring array in the middle cavity; A magnetic object (94) movably mounted on each guide column (95), the magnetic object (94) partitioning the middle cavity into an upper cavity and a lower cavity; A driving shaft (91), the driving shaft (91) being fixed to a first end of the magnetic object (94) and the outer end of the driving shaft (91) extending out of the housing (93); An upper spring (96), the upper spring (96) being arranged in the upper cavity and sleeved outside the driving shaft (91), the first end of the upper spring (96) being against the annular surface of the upper cavity, and the second end of the upper spring (96) being against the first end surface of the magnetic object (94); A lower spring (97) is disposed in the lower cavity, wherein a first end of the lower spring abuts against a second end surface of the magnetic object (94), and a second end of the lower spring abuts against a bottom surface of the lower cavity.

2. The tool head switching mechanism of a numerical control device according to claim 1, characterized in that: The magnetic object (94) is a cylindrical structure, and is provided with guide holes distributed in a ring array, and each guide hole is one-to-one sleeved outside each guide column (95) so that the magnetic object (94) can move along the guide column (95).

3. The tool head switching mechanism of a numerical control device according to claim 1, characterized in that: The electromagnetic coil (92) is wound at a height sufficient to drive the magnetic object (94) to move when the electromagnetic coil (92) is powered on.

4. The tool head switching mechanism of a numerical control device according to claim 1, characterized in that: The tool head switching mechanism also includes: A Y-axis moving mechanism (20), the Y-axis moving mechanism comprising a motor drive source, a screw assembly and a movable block assembly, the movable block assembly being screwed to the screw assembly, the motor drive source driving the screw connected to the screw assembly; The rack switching mechanism is fixed to the movable block assembly via a bracket assembly, and the driving shaft (91) is drivingly connected to the rack switching mechanism.

5. The tool head switching mechanism of a numerical control device according to claim 4, characterized in that: The bracket assembly comprises a connecting block (6), a bracket (10) mounted on the lower end surface of the connecting block (6), two sides of the bracket (10) are fixed with Z-direction guide grooves (19), the two Z-direction guide grooves (19) are arranged in a back-to-back relationship, and the power device (9) is mounted on the bracket (10) through a vertical block; The rack switching mechanism comprises: Two sets of rack assemblies are slidably connected to the two Z guide grooves (19) respectively; A gear (15), the gear (15) is rotatably mounted on the lower end of the bracket (10), and two sides of the gear (15) are respectively meshed and connected with two sets of rack assemblies; The two groups of cutter assemblies are respectively installed at the lower ends of the two groups of rack assemblies.

6. The tool head switching mechanism of a numerical control device according to claim 5, characterized in that: The rack assembly comprises a movable guide rail (7) and a rack (11) fixed to the lower end of the movable guide rail (7), wherein the upper end of one of the movable guide rails (7) is fixed to the drive shaft (91) via a connecting piece (8), and the gear (15) is respectively meshed with the two racks (11).

7. The tool head switching mechanism of a numerical control device according to claim 5, characterized in that: The cutter assembly comprises a cutter head fixing portion (13) and a cutter head (14) detachably mounted on the cutter head fixing portion.

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