Drilling machine screwing auxiliary laser centering device

Abstract

The utility model provides an auxiliary laser centering device for screwing a drilling machine. Comprising a lantern ring connecting base, a laser assembly, a lantern ring, an external thread guide sleeve and a clamping assembly. The clamping assembly is used for clamping and fixing a drill bit; the lantern ring is used for accommodating the clamping assembly; one end of the lantern ring is provided with internal threads, and the other end of the lantern ring is provided with open notches in a ring array; the external thread guide sleeve is provided with external threads, is in threaded connection with the internal thread end of the lantern ring and is used for adjusting the clamping assembly to fasten the drill bit. The lantern ring connecting seat is concentrically connected with the lantern ring and comprises a ring body and a ring seat, and the centers of the ring body and the ring seat are collinear; the ring body is provided with a circular ring array and grooves corresponding to the notches in the lantern ring, and the grooves and the notches are combined to limit the clamping assembly. The laser assembly is provided with a laser transmitter, and the laser transmitter is in threaded connection with a screw hole in the mounting hole through a fixing screw and is locked on the mounting hole of the ring seat. The laser transmitter is concentric with the drill bit, the center point and the center line of the drill bit are indicated through laser, and the center point and the center line of the drilling machine are marked through the marking pen.

Description

Technical Field

[0001] This utility model relates to drilling machine tooling in the field of machinery, and more particularly to a drilling machine tightening auxiliary laser centering device. Background Technology

[0002] Shipbuilding involves complex construction processes, diverse piping systems, and challenging operating environments. Construction often involves the fabrication and drilling of numerous pipes of various diameters and materials, blind flanges, and tooling. Before drilling begins, the workpieces must be clamped and the drilling location aligned with the center point of the drilling machine.

[0003] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0004] It is difficult to mark the center point and center line of a drilling machine. It is not easy to mark the center point of the drilling machine with a marker. If the center drill of the drilling machine is used for pre-drilling, a permanent indentation needs to be formed on the workpiece. Once the position of the pre-drilled point of the center drill needs to be adjusted, the indentation caused by the original workpiece will become a defect. If the old and new indentations are repeatedly drilled, they cannot be erased, causing confusion and easily producing indentation defects that lead to quality problems. At the same time, the center drill of the drilling machine can only drill the center point and cannot mark the center line. Summary of the Invention

[0005] To address the shortcomings of existing technologies and the difficulty in marking the center point and center line of a drilling machine, this application provides a laser centering device for drilling machine tightening. This device is concentrically connected to a collar and a collar connecting seat. An external threaded guide sleeve is mounted on one side of the collar, and a laser assembly is mounted on the other side of the collar connecting seat. A clamping assembly is housed between the collar and the collar connecting seat. The drill bit and the laser emitter are collinear. Marking the center point / line with a marker using a laser dot / line is equivalent to marking the center point / line of the drilling machine, improving work efficiency and avoiding damage to the workpiece caused by secondary marking with a traditional center drill. This solves the technical problem of the difficulty in marking the center point and center line of a drilling machine.

[0006] The solution adopted by the embodiments of this application to solve the technical problem is:

[0007] The drilling machine tightening auxiliary laser centering device includes a collar connecting seat, a laser assembly, a collar, an external threaded guide sleeve, and a clamping assembly;

[0008] The clamping assembly is used to clamp and fix the drill bit; the collar is a hollow structure used to house the clamping assembly; one end of the collar has an internal thread, and the other end has a slotted opening of an array of rings for assembling and limiting the clamping assembly; the external threaded guide sleeve has an external thread and is screwed to the internal thread end of the collar for adjusting the clamping assembly to secure the drill bit; the collar connecting seat is concentrically connected to the collar and includes a ring body and a ring seat, with a ring body at one end and a ring seat at the other end, the ring body and the ring seat being collinear; the ring body has a groove with an array of rings corresponding to the slotted opening on the collar, the groove and the slotted opening together limit the clamping assembly, and the clamping assembly is housed in the inner cavity of the ring body; the ring seat has a mounting hole, and the mounting hole has a screw hole radially provided; the laser assembly has a laser emitter, which is locked onto the mounting hole of the ring seat by screwing a fixing screw into the screw hole on the mounting hole;

[0009] The drill bit is inserted into the external threaded guide sleeve, and the collar and collar connecting seat together limit the clamping assembly. The external threaded guide sleeve is adjusted to clamp and center the drill bit through the clamping assembly. The laser emitter is concentric with the drill bit and indicates the center point and center line of the drill bit through the laser. The center point and center line of the drill are marked with a marker according to the laser indication.

[0010] In order to further solve the technical problems to be solved by the embodiments of this application, the clamping assembly provided by the embodiments of this application includes a bearing, a wedge, a tension spring fixing pin and a tension spring;

[0011] The bearings include flat bearings, short straight nylon needle roller bearings, and long straight nylon needle roller bearings. The wedges include inner wedges and outer wedges. The inner wedge is a trapezoidal structural block with an inner wedge inclined surface on its inclined part and an inner wedge vertical surface on its vertical part. Through-hole inner wedge pin holes are arranged in the inner wedge. The outer wedge is also a trapezoidal structural block with an outer wedge inclined surface on its surface and outer wedge pin holes arranged in the outer wedge.

[0012] Among them, the outer inclined iron is stacked on the inner inclined iron, and the inclined surface of the inner inclined iron is aligned with the inclined surface of the outer inclined iron and assembled together. The inner inclined iron contacts the drill bit and forms a pawl to hold the drill bit. The holding assembly is collinear with the center of the drill bit.

[0013] One end of the outer wedge is embedded in the slot of the collar, and the other end is embedded in the groove of the collar connecting seat, thus fixing the outer wedge. A long straight nylon needle roller bearing is provided between the outer wedge surface of the outer wedge and the inner wedge surface of the inner wedge, for the inner wedge to slide along the outer wedge. Tension spring fixing pins are respectively installed in the outer wedge pin hole of the outer wedge and the inner wedge pin hole of the inner wedge. The tension spring fixing pin includes a pin shaft and a groove. The pin shaft passes through the outer wedge pin hole or the inner wedge pin hole, and a groove is provided at the outer end of the pin shaft. The hooks at both ends of the tension spring are engaged in the groove, allowing the inner wedge to slide along the outer wedge. A short straight nylon needle roller bearing is glued to the inner wedge surface of the inner wedge to bear the thrust of the external threaded guide sleeve. A plane bearing is provided adjacent to the outside of the short straight nylon needle roller bearing to transmit the load of the external threaded guide sleeve.

[0014] Furthermore, there are a total of three pawls that link the inner and outer inclined plates, evenly distributed around the drill bit, so that the clamping assembly is collinear with the center of the drill bit.

[0015] Furthermore, the external threaded guide sleeve includes a threaded sleeve, a hollow shaft, and a handle. The threaded sleeve has a disc-like structure with external threads and a through hole in the middle. A handle is provided on the outside of the threaded sleeve for rotating the external threaded guide sleeve to screw it in or out. A hollow shaft is provided on the inside of the threaded sleeve for assembling a plane bearing. The hollow shaft has a limiting hole that matches the drill bit for drill bit insertion.

[0016] Furthermore, the laser assembly includes a laser emitter, a spring, laser emitter switch contacts, and fixing screws; the laser emitter is a cylindrical, inline or cross-shaped laser emitter, the laser emitter switch contacts are stepped shafts, a limiting shaft is provided at one end of the laser emitter switch contacts, and a spindle is provided at the other end, with a shoulder between the limiting shaft and the spindle; the limiting shaft end of the laser emitter switch contacts is concentrically connected to the mounting hole of the collar connecting seat, the shoulder plane contacts the surface of the mounting hole, the spring is assembled on the spindle, and the laser emitter is locked and fixed using fixing screws.

[0017] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] 1. Because the embodiments of this application adopt the technical means of concentric connection between the collar and the collar connecting seat, the collar being equipped with an external threaded guide sleeve on one side, the collar connecting seat being equipped with a laser component on one side, and the clamping component being housed between the collar and the collar connecting seat, the drill bit inserted into the collar through the external threaded guide sleeve is collinear with the center of the laser emitter assembled on the center of the collar connecting seat. The laser point / line emitted by the laser emitter is the center point / line of the drill bit. This effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art. Marking the center point / line with a marker pen using the laser point / line is equivalent to marking the center point / line of the drill press, thereby achieving the technical effect of improving work efficiency and avoiding damage to the workpiece caused by secondary marking by the traditional center drill.

[0019] 2. As this application embodiment adopts the technical means of embedding the outer inclined iron in the slot 32 of the collar and the groove of the collar connecting seat, it effectively solves the technical problem that the center point and center line of the drilling machine are not easy to mark in the prior art, and thus realizes the technical effect of fixing the outer inclined iron relative to the collar and the collar connecting seat to form the fixing point of the clamping assembly.

[0020] 3. Because the embodiments of this application adopt the technical means of having inner and outer inclined iron pin holes respectively, and inserting tension spring fixing pins in the inner and outer inclined iron pin holes, the inner and outer inclined irons are connected by tension springs to form a linkage structure, forming the active action point of the clamping assembly, which effectively solves the technical problem that the center point and center line of the drilling machine are not easy to mark in the prior art. The inner inclined iron slides relative to the outer inclined iron, thereby realizing the technical effect of radial adjustment of the clamping assembly.

[0021] 4. Since the embodiments of this application adopt the technical means of setting a long straight nylon needle roller bearing between the inner and outer inclined irons, when the inner and outer inclined irons slide along the outer inclined iron, the inner and outer inclined irons are in rolling friction, which effectively solves the technical problem that the center point and center line of the drilling machine are not easy to mark in the prior art. The resistance is small and it is not easy to wear, thereby achieving the technical effect of facilitating the adjustment of the clamping components.

[0022] 5. Because the embodiments of this application adopt the technical means of having an external thread on the threaded sleeve, a handle on the outside of the threaded sleeve, and a hollow shaft on the inside of the threaded sleeve, and mounting a plane bearing on the hollow shaft, rotating the handle, the external threaded guide sleeve screws into the collar, and the hollow shaft pushes the clamping assembly to adjust radially, it effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art, locks and fixes the drill bit passing through the through hole, and thus achieves the technical effect of the external threaded guide sleeve and the drill bit being concentric.

[0023] 6. Because the embodiments of this application adopt the technical means of the laser emitter switch contact being a stepped shaft, a limiting shaft being provided at one end of the laser emitter switch contact, a mandrel being provided at the other end, and a shoulder being provided between the limiting shaft and the mandrel, the limiting shaft end of the laser emitter switch contact is concentrically connected to the mounting hole of the collar connecting seat, which effectively solves the technical problem that the center point and center line of the drill bit are not easy to mark in the prior art, and thus achieves the technical effect that the laser point / line emitted by the laser emitter is the center point / line of the drill bit.

[0024] It is suitable for use as a laser centering device for tightening drilling machines. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is the southeast isometric view of this embodiment;

[0027] Figure 2 This is the northwest isometric view of this embodiment;

[0028] Figure 3 This is a southeast isometric half-sectional view of this embodiment;

[0029] Figure 4 This is a half-section view of the southwest isometric view of this embodiment;

[0030] Figure 5 This is an exploded view of the structure in this embodiment;

[0031] Figure 6 This is the front view of this embodiment;

[0032] Figure 7 This is a front sectional view of this embodiment;

[0033] Figure 8 This is the southeast isometric view of the collar connector.

[0034] Figure 9 This is the southwest isometric view of the collar connector.

[0035] Figure 10 This is the southeast isometric view of the collar;

[0036] Figure 11 This is the isometric view of the northwest side of the collar;

[0037] Figure 12This is the southeast isometric view of the external threaded guide sleeve;

[0038] Figure 13 This is the northwest isometric view of the external threaded guide sleeve;

[0039] Figure 14 Isometric view of the southeast corner of the laser emitter switch contact;

[0040] Figure 15 Southwest isometric view of the laser emitter switch contacts;

[0041] Figure 16 This is a schematic diagram of the inclined iron structure;

[0042] Figure 17 This is a schematic diagram of the inclined iron structure;

[0043] Figure 18 This is a tension spring retaining pin.

[0044] In the picture:

[0045] 0. Drill bit;

[0046] 1. Collar connector,

[0047] 11. Ring body,

[0048] 111. Groove,

[0049] 12. Ring seat,

[0050] 121. Mounting hole,

[0051] 122. Screw hole;

[0052] 2. Laser components,

[0053] 21. Laser emitter,

[0054] 22. Spring,

[0055] 23. Laser emitter switch contacts,

[0056] 231. Limiting axis,

[0057] 232. Shoulder

[0058] 233. Mandrel

[0059] 24. Fixing screws;

[0060] 3. Ring,

[0061] 31. Internal thread,

[0062] 32. Groove opening;

[0063] 4. External threaded guide sleeve,

[0064] 41. Threaded sleeve,

[0065] 411. Through hole,

[0066] 42. Hollow shaft

[0067] 421. Limiting hole,

[0068] 43. Handle;

[0069] 5. Bearings

[0070] 51. Surface bearing,

[0071] 52. Short straight nylon needle roller bearing,

[0072] 53. Long straight nylon needle roller bearing;

[0073] 6. Inner inclined iron,

[0074] 61.Inner inclined iron slope,

[0075] 62. Inwardly inclined iron pin hole,

[0076] 63. Inwardly inclined iron facade;

[0077] 7. Outer inclined iron,

[0078] 71. The inclined plane of the outer inclined iron,

[0079] 72. Outwardly inclined iron pin hole;

[0080] 8. Tension spring retaining pin,

[0081] 81. Pin,

[0082] 82. Trench;

[0083] 9. Tension spring. Detailed Implementation

[0084] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0085] As shown in the figure, the drilling machine tightening auxiliary laser centering device includes a collar connecting seat 1, a laser assembly 2, a collar 3, an external threaded guide sleeve 4, and a clamping assembly.

[0086] The clamping assembly is used to clamp and secure the drill bit.

[0087] The collar 3 has a hollow structure for accommodating the clamping assembly; one end of the collar 3 is provided with an internal thread 31, and the other end is provided with a slotted opening 32 of annular array for assembling and limiting the clamping assembly;

[0088] The external threaded guide sleeve 4 is provided with an external thread, which is screwed to the internal thread 31 end of the collar 3, and is used to adjust the clamping assembly to fasten the drill bit 0;

[0089] The collar connecting seat 1 is concentrically connected to the collar 3, and includes a ring body 11 and a ring seat 12. The ring body 11 is provided at one end of the collar connecting seat 1, and the ring seat 12 is provided at the other end. The centers of the ring body 11 and the ring seat 12 are collinear. The ring body 11 is provided with a circular array of grooves 111 that correspond to the slots 32 on the collar 3. The grooves 111 and the slots 32 together limit the clamping component, and the clamping component is housed in the inner cavity of the ring body 11. The ring seat 12 is provided with mounting holes 121, and the mounting holes 121 are radially provided with screw holes 122. In this embodiment, the grooves 111 and the slots 32 are three evenly arranged.

[0090] The laser assembly 2 has a laser emitter 21, which is screwed into the screw hole 122 on the mounting hole 121 by a fixing screw 24, thereby locking the laser emitter 21 into the mounting hole 121 of the ring seat 12.

[0091] In this process, the drill bit 0 is inserted into the external threaded guide sleeve 4, and the collar 3 and the collar connecting seat 1 together limit the clamping assembly. The external threaded guide sleeve 4 is adjusted to clamp and center the drill bit 0 through the clamping assembly. The laser emitter 21 is concentric with the drill bit 0, and then the center point and center line of the drill bit 0 are indicated by the laser. The center point and center line of the drill can be marked directly with a marker pen according to the laser indication.

[0092] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0093] Since the collar 3 and the collar connecting seat 1 are concentrically connected, an external threaded guide sleeve 4 is installed on one side of the collar 3, and a laser component 2 is installed on one side of the collar connecting seat 1. The clamping component is housed between the collar 3 and the collar connecting seat 1. Therefore, the drill bit 0 inserted into the collar 3 by the external threaded guide sleeve 4 is collinear with the center of the laser emitter 21 installed on the center of the collar connecting seat 1. The laser point / line emitted by the laser emitter 21 is the center point / line of the drill bit 0. Furthermore, the center point / line marked by the laser point / line is equivalent to the center point / line of the drilling machine, thereby improving work efficiency and avoiding damage to the workpiece caused by secondary marking by the traditional center drill.

[0094] To ensure the stability of the structure in this embodiment, the clamping assembly includes a bearing 5, a wedge, a tension spring fixing pin 8, and a tension spring 9;

[0095] The bearing 5 includes a plane bearing 51, a short straight nylon needle roller bearing 52, and a long straight nylon needle roller bearing 53. The wedge includes an inner wedge 6 and an outer wedge 7. The inner wedge 6 is a trapezoidal structural block. The inclined part of the inner wedge 6 is provided with an inner wedge inclined surface 61, and the vertical part of the inner wedge 6 is provided with an inner wedge vertical surface 63. Through-hole inner wedge pin holes 62 are arranged in the inner wedge 6. The outer wedge 7 is also a trapezoidal structural block. The outer wedge 7 is provided with an outer wedge inclined surface 71, and outer wedge pin holes 72 are arranged in the outer wedge 7.

[0096] Among them, the outer inclined iron 7 is stacked on the inner inclined iron 6, and the inner inclined iron inclined surface 61 of the inner inclined iron 6 is aligned and assembled with the outer inclined iron inclined surface 71 of the outer inclined iron 7. The inner inclined iron 6 contacts the drill bit 0 and forms a pawl to hold the drill bit 0. In this embodiment, the three pawls work together to hold the drill bit 0, so that the holding assembly is collinear with the center of the drill bit 0.

[0097] One end of the outer inclined iron 7 is embedded in the slot 32 of the collar 3, and the other end is embedded in the groove 111 of the collar connecting seat 1, so that the outer inclined iron 7 is fixed.

[0098] A long straight nylon needle roller bearing 53 is provided between the outer inclined surface 71 of the outer inclined iron 7 and the inner inclined surface 61 of the inner inclined iron 6 for the inner inclined iron 6 to slide along the outer inclined iron 7.

[0099] In the outer inclined iron pin hole 72 of the outer inclined iron 7 and the inner inclined iron pin hole 62 of the inner inclined iron 6, tension spring fixing pins 8 are respectively installed. The tension spring fixing pin 8 includes a pin shaft 81 and a groove 82. The pin shaft 81 passes through the outer inclined iron pin hole 72 or the inner inclined iron pin hole 62. The groove 82 is provided at the outer end of the pin shaft 81. The hooks at both ends of the tension spring 9 are inserted into the groove 82, so that the inner inclined iron 6 can slide along the outer inclined iron 7, adjust the clamping assembly, and then clamp and fix the drill bit 0.

[0100] A short straight nylon needle roller bearing 52 is glued onto the inner inclined iron face 63 of the inner inclined iron 6 to bear the thrust of the external threaded guide sleeve 4. A flat bearing 51 is provided adjacent to the outside of the short straight nylon needle roller bearing 52 to ensure its free rotation and to transmit the load of the external threaded guide sleeve 4.

[0101] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0102] Since the outer inclined iron 7 is embedded in the slot 32 of the collar 3 and the groove 111 of the collar connecting seat 1, the outer inclined iron 7 is fixed relative to the collar 3 and the collar connecting seat 1, forming the fixing point of the clamping assembly.

[0103] Since the inner inclined iron 6 and the outer inclined iron 7 are respectively provided with inner inclined iron pin holes 62 and outer inclined iron pin holes 72, tension spring fixing pins 8 are inserted into the inner inclined iron pin holes 62 and outer inclined iron pin holes 72. The inner inclined iron 6 and the outer inclined iron 7 are connected by tension springs 9 to form a linkage structure, forming the active action point of the clamping assembly. The inner inclined iron 6 slides relative to the outer inclined iron 7 to realize the radial adjustment of the clamping assembly.

[0104] Because a long straight nylon needle roller bearing 53 is provided between the inner inclined iron 6 and the outer inclined iron 7, when the inner inclined iron 6 and the outer inclined iron 7 slide along the outer inclined iron 7, the inner inclined iron 6 and the outer inclined iron 7 are subjected to rolling friction, which has low resistance and is not easy to wear, making it convenient to adjust the clamping assembly.

[0105] To optimize the structure of this embodiment, the external threaded guide sleeve 4 is a stepped through cover, including a threaded sleeve 41, a hollow shaft 42, and a handle 43. The threaded sleeve 41 has a disc structure and external threads. A through hole 411 is provided in the middle of the threaded sleeve 41 for the drill bit 0 to pass through. A handle 43 is provided on the outside of the threaded sleeve 41 for rotating the external threaded guide sleeve 4 to screw the external threaded guide sleeve 4 in or out. A hollow shaft 42 is provided on the inside of the threaded sleeve 41 for assembling a plane bearing 51. A limiting hole 421 is provided on the hollow shaft 42, which matches the drill bit 0 for insertion.

[0106] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0107] Since the threaded sleeve 41 has an external thread, a handle 43 is provided on the outside of the threaded sleeve 41, and a hollow shaft 42 is provided on the inside of the threaded sleeve 41, a plane bearing 51 is assembled on the hollow shaft 42. By rotating the handle 43, the external threaded guide sleeve 4 is screwed into the collar 3, and the hollow shaft 42 pushes the clamping assembly to adjust radially, thereby locking and fixing the drill bit 0 that passes through the through hole 411. The external threaded guide sleeve 4 is concentric with the drill bit 0.

[0108] To further optimize the structure of this embodiment, the laser assembly 2 includes a laser emitter 21, a spring 22, a switch contact 23 of the laser emitter 21, and a fixing screw 24. The laser emitter 21 is a cylindrical, straight-line or cross-shaped laser emitter 21. The switch contact 23 of the laser emitter 21 is a stepped shaft. A limiting shaft 231 is provided at one end of the switch contact 23 of the laser emitter 21, and a spindle 233 is provided at the other end. A shoulder 232 is provided between the limiting shaft 231 and the spindle 233. The limiting shaft 231 end of the switch contact 23 of the laser emitter 21 is concentrically connected to the mounting hole 121 of the collar connecting seat 1. The plane of the shoulder 232 contacts the surface of the mounting hole 121. The spring 22 is assembled on the spindle 233. The laser emitter 21 is inserted last after the switch contact 23 of the laser emitter 21 and the spring 22 are inserted into the mounting hole 121 of the collar connecting seat 1 in sequence. At the same time, the fixing screw 24 is used to lock and fix the laser emitter 21.

[0109] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0110] Since the switch contact 23 of the laser emitter 21 is a stepped shaft, a limiting shaft 231 is provided at one end of the switch contact 23 of the laser emitter 21, and a spindle 233 is provided at the other end. A shoulder 232 is provided between the limiting shaft 231 and the spindle 233. Therefore, the limiting shaft 231 end of the switch contact 23 of the laser emitter 21 is concentrically connected to the mounting hole 121 of the collar connecting seat 1, and the laser point / line emitted by the laser emitter 21 is the center point / line of the drill bit 0.

[0111] The working principle of this embodiment:

[0112] With the collar 3 fixed in place, during the screwing of the external threaded guide sleeve 4, the hollow shaft 42 pushes the plane bearing 51, the short straight nylon needle roller bearing 52, and the inner inclined iron 6 to move axially. Since the outer inclined iron 7 is fixed in place, a long straight nylon needle roller bearing 53 is provided between the outer inclined iron 7 and the inner inclined iron 6. The inner inclined iron inclined surface 61 of the inner inclined iron 6 slides relative to the outer inclined iron inclined surface 71 of the outer inclined iron 7, and continuously pushes the inner inclined iron 6 to move radially toward the drill bit 0 until the drill bit 0 is clamped and locked. Since all movements are synchronous, at this time the center of the drill bit 0 coincides with the center of the entire device, that is, the laser point / line emitted by the laser emitter 21 is the center point / line of the drill bit 0, thereby achieving laser alignment.

[0113] It is worth noting that all contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of the laser emitter 21 are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures, and will not be described here.

[0114] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drilling machine tightening auxiliary laser centering device, characterized by comprising: a clamping assembly for clamping and fixing a drill bit (0); a sleeve ring (3) with a hollow structure for accommodating the clamping assembly; an inner thread (31) is arranged at one end of the sleeve ring (3), and a circular array of slotted openings (32) is arranged at the other end for assembling and limiting the clamping assembly; an external thread guide sleeve (4) provided with external threads is screwed with the inner thread (31) of the sleeve ring (3) to adjust the clamping assembly to tighten the drill bit (0); a sleeve ring connecting seat (1) is concentrically connected with the sleeve ring (3) and comprises a ring body (11) and a ring seat (12); the ring body (11) is arranged at one end of the sleeve ring connecting seat (1), and the ring seat (12) is arranged at the other end; the center lines of the ring body (11) and the ring seat (12) are coaxial; a circular array of grooves (111) corresponding to the slotted openings (32) on the sleeve ring (3) is arranged on the ring body (11); the grooves (111) and the slotted openings (32) jointly limit the clamping assembly, and the clamping assembly is accommodated in the inner cavity of the ring body (11); a mounting hole (121) is arranged on the ring seat (12), and a screw hole (122) is radially arranged in the mounting hole (121); and a laser assembly (2) has a laser emitter (21) which is screwed with the screw hole (122) on the mounting hole (121) through a fixing screw (24) to lock the laser emitter (21) on the mounting hole (121) of the ring seat (12); wherein the drill bit (0) is inserted into the external thread guide sleeve (4), the sleeve ring (3) and the sleeve ring connecting seat (1) jointly limit the clamping assembly, the external thread guide sleeve (4) is adjusted to clamp and center the drill bit (0) through the clamping assembly; the laser emitter (21) is concentric with the drill bit (0), and the center point and center line of the drill bit (0) are indicated by laser, and the center point and center line of the drilling machine are marked with a marker according to the laser indication.

2. The drilling machine tightening auxiliary laser centering device according to claim 1, characterized by that the clamping assembly comprises a bearing (5), an inclined iron, a tension spring fixing pin (8) and a tension spring (9); the bearing (5) comprises a plane bearing (51), a short straight line nylon row needle bearing (52) and a long straight line nylon row needle bearing (53); the inclined iron comprises an inner inclined iron (6) and an outer inclined iron (7); the inner inclined iron (6) is a trapezoidal structure block, an inner inclined iron inclined surface (61) is arranged on the inclined part of the inner inclined iron (6), an inner inclined iron vertical surface (63) is arranged on the vertical part of the inner inclined iron (6), and an inner inclined iron pin hole (62) is arranged through the inner inclined iron (6); the outer inclined iron (7) is also a trapezoidal structure block, an outer inclined iron inclined surface (71) is arranged on the outer inclined iron (7), and an outer inclined iron pin hole (72) is arranged in the outer inclined iron (7). ​ ​ ​ ​ ​ ​ ​ ​ ​ The outer inclined iron (7) is stacked on the inner inclined iron (6), the inner inclined iron slope (61) of the inner inclined iron (6) is aligned with the outer inclined iron slope (71) of the outer inclined iron (7), the inner inclined iron (6) is in contact with the drill bit (0), and the inner inclined iron (6) and the drill bit (0) are coaxial. The side of the outer inclined iron (7) is embedded in the slot opening (32) of the sleeve ring (3), and the other end is embedded in the groove (111) of the sleeve ring connecting seat (1), so that the outer inclined iron (7) is fixed. The long straight line nylon row needle bearing (53) is arranged between the outer inclined iron slope (71) of the outer inclined iron (7) and the inner inclined iron slope (61) of the inner inclined iron (6), which is used for the inner inclined iron (6) to slide along the outer inclined iron (7). A tension spring fixing pin (8) is respectively assembled in the outer inclined iron pin hole (72) of the outer inclined iron (7) and the inner inclined iron pin hole (62) of the inner inclined iron (6), the tension spring fixing pin (8) includes a pin shaft (81) and a groove (82), the pin shaft (81) transversely passes through the outer inclined iron pin hole (72) or the inner inclined iron pin hole (62), the groove (82) is arranged at the outer end of the pin shaft (81), and hooks at two ends of the tension spring (9) are clamped into the groove (82), so that the inner inclined iron (6) can slide along the outer inclined iron (7). The short straight line nylon row needle bearing (52) is glued on the inner inclined iron vertical surface (63) of the inner inclined iron (6), which is used for bearing the thrust of the outer threaded guide sleeve (4), and the short straight line nylon row needle bearing (52) is provided with the planar bearing (51) adjacent to the outer side, which is used for transmitting the load of the outer threaded guide sleeve (4).

3. The drill press tightening auxiliary laser centering device according to claim 2, wherein: The total number of the inner inclined iron (6) and the outer inclined iron (7) linkage pawl is three, which is evenly distributed around the drill bit (0), so that the clamping assembly is coaxial with the center of the drill bit (0).

4. The drill press tightening auxiliary laser centering device according to claim 2, wherein: The outer threaded guide sleeve (4) includes a threaded sleeve (41), a hollow shaft (42) and a handle (43); the threaded sleeve (41) is disc-shaped, and is provided with external threads on the threaded sleeve (41); the threaded sleeve (41) is provided with a through hole (411) in the middle; the handle (43) is arranged on the outer side of the threaded sleeve (41) and is used for rotating the outer threaded guide sleeve (4) to make the outer threaded guide sleeve (4) rotate in or out; the hollow shaft (42) is arranged on the inner side of the threaded sleeve (41) and is used for assembling the planar bearing (51); the hollow shaft (42) is provided with a limiting hole (421), which is matched with the drill bit (0) and is used for inserting the drill bit (0).

5. The drill press tightening auxiliary laser centering device according to claim 4, wherein: The laser assembly (2) includes a laser emitter (21), a spring (22), a laser emitter switch contact (23) and a fixing screw (24); the laser emitter (21) is a cylindrical linear type or a cross type, the laser emitter switch contact (23) is a stepped shaft, a limiting shaft (231) is arranged at one end of the laser emitter switch contact (23), a core shaft (233) is arranged at the other end, and a shaft shoulder (232) is arranged between the limiting shaft (231) and the core shaft (233); the limiting shaft (231) end of the laser emitter switch contact (23) is connected concentrically with the mounting hole (121) of the sleeve ring connecting seat (1), the shaft shoulder (232) plane is in contact with the mounting hole (121) surface, the spring (22) is assembled on the core shaft (233), and the laser emitter (21) is locked and fixed by using the fixing screw (24).

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