Drilling machine tool

Abstract

This invention discloses a drilling machine tool, including a drilling device. A guiding and positioning device is provided on one side of the drilling device. The guiding and positioning device includes a positioning element, a mounting base, a connecting rod, a sleeve, a drive mechanism, a shifting mechanism one, a shifting mechanism two, and a guide element. One or more guide grooves are provided on the connecting rod to guide its up and down movement. A convex end is provided radially on the sleeve and the convex end is located in the corresponding guide groove. The moving end of the shifting mechanism two is connected to the guide element to drive the end of the guide element into or out of the corresponding guide groove. This invention improves upon the original drilling machine tool by adding a shifting mechanism two and a guide element, and by opening a guide groove on the connecting rod (corresponding to the extension rod in the above patent) to cooperate with the guide element to improve the movement accuracy of the connecting rod, thereby playing a better guiding and positioning role and helping to improve the drilling accuracy.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more specifically to drilling machine tools. Background Technology

[0002] CNC machine tools are widely used in mold processing and other fields, such as drilling. Due to the high machining accuracy of drilling, our company has made targeted improvements to the structure of vertical deep hole drilling machine tools. As described in application publication number CN112873403A, a guide positioning sleeve device is added to one side of the drill bit device. The lifting mechanism moves the extension rod to move the guide positioning sleeve synchronously, and the drive motor drives the extension rod to rotate so that the end of the guide sleeve is located below the drill bit as required, and the workpiece is fixed in advance. The drill bit passes through the hole of the guide sleeve to drill. However, during our company's use, we found that the movement of the extension rod has the disadvantage of poor accuracy, which needs to be improved. Summary of the Invention

[0003] To address at least one of the aforementioned technical deficiencies, the present invention provides the following technical solution:

[0004] This application discloses a drilling machine tool, including a drilling device. A guide positioning device is provided on one side of the drilling device. The guide positioning device includes a positioning element, a mounting base, a connecting rod, a sleeve, a drive mechanism, and a first displacement mechanism. The sleeve and the drive mechanism are mounted on the mounting base, and the drive mechanism drives the sleeve to rotate in conjunction with the mounting base. The connecting rod passes through the sleeve and is provided with a positioning element. The connecting rod is rotatably connected to the moving end of the first displacement mechanism to drive the connecting rod to synchronously move the positioning element up and down relative to the drilling device. The guide positioning device also includes a second displacement mechanism and a guide element. One or more guide grooves are provided on the connecting rod to guide its up and down movement. A convex end is radially provided on the sleeve and the convex end is located in the corresponding guide groove. The moving end of the second displacement mechanism is connected to the guide element to drive the end of the guide element into or out of the corresponding guide groove.

[0005] Our company has improved the original drilling machine by adding a second shifting mechanism and a guide component. We have also added a guide groove to the connecting rod (corresponding to the extension rod in the aforementioned patent) to cooperate with the guide component, thereby improving the moving accuracy of the connecting rod and thus playing a better guiding and positioning role, which helps to improve the drilling accuracy.

[0006] For the first and second displacement mechanisms, common types of telescopic mechanisms such as pneumatic cylinders or hydraulic cylinders, or lead screw and nut mechanisms, or gear and rack mechanisms are all acceptable. Preferably, the first and second displacement mechanisms are pneumatic cylinder or hydraulic cylinder telescopic mechanisms.

[0007] The moving end of the shifting mechanism can move in the same direction as the guide to directly drive the shift, or it can move in a different direction than the guide, as follows:

[0008] Furthermore, it also includes connecting rod one and connecting rod two. Connecting rod one is fixed to the moving end of the shifting mechanism two, and connecting rod two is hinged to connecting rod one in the radial direction. The other end of connecting rod two, opposite to the hinged position of connecting rod one, is hinged to the end of the guide member. The mounting base is provided with a guide hole for the guide member to pass through. Under the transmission of the hinged connecting rod one and connecting rod two, the shifting mechanism one drives the guide member to enter or disengage from the corresponding guide groove on the connecting rod through the guide hole. Under the transmission action of the two hinged connecting rods and guided by the guide hole on the mounting base, the shifting mechanism one drives the guide member into the guide groove, precisely guiding the up and down movement of the connecting rod. This structure helps to reduce the lateral dimension of the drilling device.

[0009] Furthermore, the moving ends of the second and first shifting mechanisms move in parallel directions, and guide members are provided in the radial direction of the connecting rod, resulting in a reasonable layout.

[0010] Furthermore, the mounting base is provided with a first fixed base and a second fixed base. The first fixed base is provided with a first shifting mechanism, and the second fixed base is provided with a second shifting mechanism, thereby increasing the number of fixed bases for docking and installation of the shifting mechanism.

[0011] Furthermore, the mounting base is fixed to the connecting base in the drilling device, with a reasonable layout, accurate guidance, and positioning.

[0012] Furthermore, the positioning element is provided with a hole through which the drill bit in the drilling device passes, and the drill bit passing through the hole helps to improve the accuracy of drilling.

[0013] Furthermore, the first end of the positioning component is fixed to the tail end of the connecting rod, and the tail end of the positioning component extends downward at an angle with a hole formed at the tail end for the drill bit to pass through, which facilitates positioning and guidance.

[0014] Furthermore, a connecting rod three is provided radially at the first end of the connecting rod. One end of the connecting rod three is rotatably connected to the first end of the connecting rod, and the other end of the connecting rod three is fixed to the moving end of the shifting mechanism one. The connecting rod three mates with the connecting rod, which simplifies the structure and facilitates the driving mechanism to drive the connecting rod to rotate and adjust the position of the positioning component.

[0015] Furthermore, the mounting base is provided with a hole for the connecting rod to pass through, and a groove is provided on the hole wall. An annular sleeve is provided in the groove. The driving mechanism is a rotary cylinder or a drive motor. The output end of the driving mechanism drives the sleeve to rotate through gear meshing or belt drive. The sleeve is built into the groove for axial positioning, and the sleeve extends into the guide groove of the connecting rod with its radial convex end to drive its rotation synchronously. The drive through gear meshing or belt drive is a common structure.

[0016] Furthermore, the protruding end of the sleeve and the end of the guide member are located in the same guide groove, simplifying the structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The present invention adds a guiding mechanism for the connecting rod to the guiding and positioning device to improve the displacement accuracy of the positioning component, which helps to improve the drilling accuracy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the drilling machine tool in Example 1;

[0021] Figure 2 This is a schematic diagram of the installation structure of the guide and positioning device;

[0022] Figure 3 This is a structural schematic diagram of the hinged connecting rod and the guide component;

[0023] Figure 4 This is a schematic diagram of the connection structure between the drive mechanism and the sleeve;

[0024] Figure 5 This is a schematic diagram of the sleeve structure;

[0025] The attached figures are labeled as follows:

[0026] 4. Connecting seat; 6. Guide and positioning device; 61. Positioning component; 62. Connecting rod; 63. Mounting seat; 64. Drive mechanism; 65. Shifting mechanism two; 66. Fixed seat two; 67. Guide block; 68. Connecting rod one; 69. Connecting rod two; 70. Guide component; 71. Shifting mechanism one; 72. Connecting rod three; 73. Guide groove; 74. Belt; 75. Sleeve; 76. Groove; 77. Protruding end; 78. End cap; 79. Fixed seat one. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] like Figure 1 , Figure 2 As shown, this drilling machine tool is an improvement on the device shown in application publication number CN112873403A. A guide positioning device 6 is installed on one side of the drilling device in the drilling machine tool. The guide positioning device includes a positioning element 61, a mounting base 63, a connecting rod 62, a sleeve 75, a drive mechanism 64, and a shifting mechanism 71. The mounting base 63 is connected to the connecting seat 4 of the drilling device that supports the drilling drive mechanism and the drill bit by screws, etc.

[0030] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the mounting base 63 has a vertical opening, and an end cap 78 is fixed at the opening. An annular sleeve 75 is placed in the groove 76 formed between the end cap and the wall at the opening. The cylindrical connecting rod 62 passes through the hole in the center of the end cap 78 and the hole in the mounting base 63 in sequence, and the tail end is fixed with a positioning piece 61. The inner wall of the sleeve 75 protrudes radially to form a convex end 77. The corresponding connecting rod 62 wall is formed with an axial guide groove 73, and the convex end is located in the guide groove 73. A drive mechanism 64 is installed on the mounting base 63 corresponding to the front of the sleeve 75. A drive motor is selected, and a pulley is installed on the output shaft of the drive motor. The belt 74 is wrapped around the pulley and the sleeve 75, and the sleeve is driven to rotate by belt drive, which synchronously drives the connecting rod 62 to rotate. The positioning piece 61 rotates to adjust its position. A fixing seat 79 is installed on the back of the mounting base 63. The fixing seat 79 consists of two horizontal plates, an upper and a lower one. A shifting mechanism 71 is installed on the fixing seat 79. A cylinder is selected. A connecting rod 72 is radially installed on the telescopic end of the cylinder. The end of the connecting rod 72 has an opening for the top of the connecting rod to pass through and a fixed end cap or nut to form a rotational fit. With this structure, the mechanism can be driven to rotate the connecting rod to adjust the angle of the positioning component. In this embodiment, the first end of the positioning component 61 is fixed to the tail end of the connecting rod 62. The tail end of the positioning component 61 extends downward at an angle and has an opening for the drill bit to pass through, which serves as a guide. Then, the vertical position of the connecting rod can be adjusted by the shifting mechanism 79, and the vertical height of the positioning component can be adjusted synchronously, such as by pre-attaching to the workpiece for fixation.

[0031] In this embodiment, a shifting mechanism 65 and a guide component are added, such as... Figure 1 , Figure 2 , Figure 3 As shown, a second fixed seat 66 is installed on the right side of the mounting base 63. A second displacement mechanism 65 is installed on the second fixed seat 66. A cylinder is selected. The extension and retraction directions of the first displacement mechanism 71 and the second displacement mechanism 65 are both vertical. The extension and retraction end of the second displacement mechanism passes through the second fixed seat 66 and is fixed to the lower connecting rod 68. The first connecting rod 68 extends vertically and is parallel to the connecting rod. The second connecting rod 69 is hinged to the first connecting rod 68 in the radial direction. If the second connecting rod extends into the hole opened in the first connecting rod and passes through with a pin to form a pivot connection, the other end of the second connecting rod 69 is hinged to the end of the columnar guide 70, which is also a pivot connection. The horizontal guide hole on the mounting base 63 is connected to the hole where the connecting rod is located. The end of the guide member 70 extends into the guide hole. The moving end of the shifting mechanism two moves. Under the transmission of the hinged two connecting rods, and with the guiding action of the guide hole of the mounting base, the end of the guide member enters or leaves the guide groove 73 where the sleeve protrusion is located. In this embodiment, the protrusion 77 of the sleeve 75 shares the guide groove with the guide member, and the protrusion 77 is located directly above the guide member.

[0032] In use, when the first shifting mechanism needs to move the connecting rod, the second shifting mechanism is activated in advance so that the end of the guide member enters the guide groove to guide the up and down movement of the connecting rod. When the connecting rod is rotated by the drive mechanism, the guide member can be withdrawn from the guide groove.

[0033] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A drilling machine tool, comprising a drilling device, wherein a guide positioning device is provided on one side of the drilling device, the guide positioning device comprising a positioning element, a mounting base, a connecting rod, a sleeve, a drive mechanism, and a first displacement mechanism, wherein the sleeve and the drive mechanism are mounted on the mounting base and the drive mechanism drives the sleeve to rotate relative to the mounting base, the connecting rod passes through the sleeve and the positioning element is mounted on the connecting rod, the connecting rod is rotatably connected to the moving end of the first displacement mechanism to drive the connecting rod to synchronously move the positioning element up and down relative to the drilling device, characterized in that, The guiding and positioning device also includes a shifting mechanism two and a guide member. One or more guide grooves are provided on the connecting rod to guide its up and down movement. A convex end is provided radially on the sleeve and the convex end is located in the corresponding guide groove. The moving end of the shifting mechanism two is connected to the guide member to drive the end of the guide member into or out of the corresponding guide groove. It also includes connecting rod one and connecting rod two. Connecting rod one is fixed to the moving end of the shifting mechanism two, and connecting rod two is hinged to connecting rod one in the radial direction. The other end of connecting rod two, which is opposite to the hinged position of connecting rod one, is hinged to the end of the guide member. The mounting base is provided with a guide hole for the guide member to pass through. Under the transmission of the hinged connecting rod one and connecting rod two, the shifting mechanism two drives the guide member to enter or disengage from the corresponding guide groove on the connecting rod through the guide hole. Connecting rod three is provided in the radial direction at the beginning of the connecting rod. One end of connecting rod three is rotatably connected to the beginning of the connecting rod, and the other end of connecting rod three is fixed to the moving end of the shifting mechanism one.

2. The drilling machine tool as described in claim 1, characterized in that: The moving ends of the second and first shifting mechanisms are parallel in their moving directions, and a guide is provided in the radial direction of the connecting rod.

3. The drilling machine tool as described in claim 1, characterized in that: The mounting base is provided with a first fixed base and a second fixed base. The first fixed base is provided with a first shifting mechanism, and the second fixed base is provided with a second shifting mechanism.

4. The drilling machine tool as described in claim 3, characterized in that: The mounting base is fixed to the connecting base in the drilling device.

5. The drilling machine tool as described in claim 1, characterized in that: The positioning component is provided with a hole for the drill bit in the drilling device to pass through. The first end of the positioning component is fixed to the tail end of the connecting rod. The tail end of the positioning component extends downward at an angle and has a hole formed at the tail end for the drill bit to pass through.

6. The drilling machine tool as described in claim 1, characterized in that: The first and second displacement mechanisms are pneumatic or hydraulic telescopic mechanisms.

7. The drilling machine tool as described in claim 1, characterized in that: The mounting base has a hole for the connecting rod to pass through, and a groove is provided on the hole wall. An annular sleeve is provided in the groove. The driving mechanism is a rotary cylinder or a drive motor. The output end of the driving mechanism drives the sleeve to rotate through gear meshing or belt drive.

8. The drilling machine tool as described in claim 1, characterized in that: The protruding end of the sleeve and the end of the guide member are located in the same guide groove.

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