Efficient point hole grinding drill bit machine

Abstract

The utility model discloses an efficient point hole grinding drill bit machine, which belongs to the technical field of grinding mills and is characterized by comprising a machine body, a rotary driving source is arranged on the machine body, an output end of the rotary driving source is connected with a grinding wheel, and a cross carriage is arranged on the machine body and positioned on one side of the grinding wheel. A grinding base used for clamping a drill bit is installed on the cross carriage, a positioning protrusion is arranged at the bottom of the grinding base, a containing groove is formed in the cross carriage, an elastic damping sleeve is arranged in the containing groove, the cross section of the elastic damping sleeve is of a V-shaped structure, an opening of the V-shaped structure faces the inner side wall of the containing groove, and the positioning protrusion is inserted into the containing groove. And the elastic damping sleeve is located between the outer side wall of the positioning protrusion and the inner wall of the containing groove, the outer side wall of the positioning protrusion is attached to the inner side wall of the elastic damping sleeve, the point hole grinding drill bit machine can reduce the adverse effect of external force and vibration on the grinding base in the grinding process, and then the stability of the grinding base is improved.

Description

Technical Field

[0001] This utility model belongs to the field of grinding machine technology, and specifically relates to a high-efficiency grinding machine for point hole drill bits. Background Technology

[0002] A drill bit grinding machine is used to re-grind drill bits whose cutting edges have been worn, allowing the drill bits to be repeatedly ground and reused, greatly extending their service life. Depending on the material of the drill bit, different grinding wheels are used to meet the repair needs, and different sized collets are matched according to the size of the drill bit.

[0003] Currently, during the processing, the drill bit is firmly clamped on the grinding seat and then comes into contact with the grinding wheel for grinding. However, the grinding operation is often accompanied by various external forces and vibrations. These external factors can easily cause the grinding seat to move slightly, that is, to have a small displacement, which in turn has an adverse effect on the processing accuracy. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a high-efficiency grinding machine for point holes. The technical problem to be solved by this invention is: how to reduce the adverse effects of external forces and vibrations on the grinding seat during the grinding process, thereby improving the stability of the grinding seat.

[0005] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a high-efficiency drill bit grinding machine for point holes, comprising a machine body, a rotary drive source provided on the machine body, a grinding wheel connected to the output end of the rotary drive source, a cross slide provided on the machine body, the cross slide located on one side of the grinding wheel, a grinding seat for clamping the drill bit installed on the cross slide, a positioning protrusion provided at the bottom of the grinding seat, a receiving groove provided on the cross slide, an elastic shock-absorbing sleeve provided in the receiving groove, the cross slide having a V-shaped cross section with the opening of the V-shaped structure facing the inner wall of the receiving groove, the positioning protrusion inserted into the receiving groove, and the elastic shock-absorbing sleeve located between the outer wall of the positioning protrusion and the inner wall of the receiving groove, the outer wall of the positioning protrusion fitting against the inner wall of the elastic shock-absorbing sleeve.

[0006] In the above-mentioned high-efficiency drill bit grinding machine, the elastic damping sleeve includes an elastic inner layer and a supporting outer layer. The elastic inner layer is bonded and fixed to the supporting outer layer. The elastic inner layer is located inside the supporting outer layer. The elastic inner layer is made of rubber material, and the supporting outer layer is made of short fiber material.

[0007] In the aforementioned high-efficiency drill bit grinding machine, an annular protrusion is formed by bending on the outer support layer, and the outer wall of the annular protrusion abuts against the inner wall of the receiving groove.

[0008] In the above-mentioned high-efficiency drill bit grinding machine, the grinding seat includes a base and a positioning plate. The base and the positioning plate are detachably connected. The base and the cross slide are connected by bolts. An arc-shaped hole is provided on the base. The bolt passes through the arc-shaped hole and is threaded to the cross slide. The positioning plate has a chuck hole.

[0009] In the above-mentioned high-efficiency drill bit grinding machine, a positioning protrusion is provided on the base, and a dovetail groove is provided at the bottom of the positioning plate. The positioning protrusion is adapted to the dovetail groove and is inserted into the dovetail groove.

[0010] In the above-mentioned high-efficiency drill bit grinding machine, the end of the dovetail groove is provided with a limiting part, and the side wall of the limiting part abuts against the side wall of the positioning protrusion.

[0011] In the above-mentioned high-efficiency drill bit grinding machine, fasteners are provided on the positioning plate, and the side wall of the positioning protrusion is provided with an installation groove, and the fasteners are threadedly connected to the installation groove.

[0012] In the aforementioned high-efficiency drill bit grinding machine, the side wall of the base has a marking area for marking scale lines.

[0013] In the aforementioned high-efficiency drill bit grinding machine, a tool setting seat is provided on the machine body.

[0014] In the above-mentioned high-efficiency drill bit grinding machine, the bottom of the machine body is provided with several rubber feet, which are frustum-shaped and their cross-sections gradually decrease from top to bottom.

[0015] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0016] By setting an elastic damping sleeve between the outer wall of the positioning protrusion and the inner wall of the receiving groove, and the cross-section of the elastic damping sleeve is V-shaped with the opening of the V-shaped structure facing the inner wall of the receiving groove, the outer wall of the positioning protrusion fits against the inner wall of the elastic damping sleeve. The elasticity of the elastic damping sleeve and the deformation of the V-shaped structure under force can absorb vibration, thereby reducing the adverse effects of external force and vibration on the grinding seat during the grinding process, and thus improving the stability of the grinding seat. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0018] Figure 2 for Figure 1 Enlarged view of part A;

[0019] Figure 3This is a cross-sectional view of an embodiment;

[0020] Figure 4 for Figure 3 Enlarged view of part B;

[0021] Figure 5 This is a schematic diagram of the bottom structure of an embodiment;

[0022] Figure 6 This is a schematic diagram of the positioning plate in an embodiment.

[0023] Reference numerals: 1. Machine body; 2. Rotary drive source; 3. Grinding wheel; 4. Cross slide; 5. Grinding seat; 51. Base; 52. Positioning plate; 6. Positioning protrusion; 7. Receiving groove; 8. Elastic damping sleeve; 81. Elastic inner layer; 82. Supporting outer layer; 9. Annular protrusion; 10. Arc-shaped hole; 11. Positioning protrusion; 12. Dovetail groove; 13. Limiting part; 14. Fastener; 15. Rubber foot; 16. Marking area; 17. Tool setting seat. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] A high-efficiency drill bit grinding machine, such as Figures 1 to 6 As shown, the machine includes a body 1, on which a rotary drive source 2 is provided. The output end of the rotary drive source 2 is connected to a grinding wheel 3. The rotary drive source 2 is preferably a motor. As another option, other drive sources with rotary functions can also be used. The machine body 1 is provided with a tool setting seat 17 to facilitate the operator to set the tool before processing.

[0026] The bottom of the body 1 is provided with several rubber feet 15. The rubber feet 15 are truncated cones and their cross-sections gradually decrease from top to bottom. The rubber feet 15 can effectively absorb vibration and impact, and can increase the friction with the plane, thereby improving the stability of the equipment. Moreover, since the cross-section of the rubber feet 15 gradually decreases from top to bottom, the contact area at the bottom of the rubber feet 15 is the smallest, which makes it easier to generate elastic deformation, thereby more effectively absorbing vibration and impact.

[0027] The base 51 has a positioning protrusion 6 at its bottom and a receiving groove 7 on the cross slide 4. An elastic damping sleeve 8 is installed in the receiving groove 7. The cross section of the elastic damping sleeve 8 is V-shaped, and the opening of the V-shaped structure faces the inner wall of the receiving groove 7. The positioning protrusion 6 is inserted into the receiving groove 7, and the elastic damping sleeve 8 is located between the outer wall of the positioning protrusion 6 and the inner wall of the receiving groove 7. The outer wall of the positioning protrusion 6 and the inner wall of the elastic damping sleeve 8 are in contact.

[0028] The elastic damping sleeve 8 and the deformation of the V-shaped structure under stress can absorb vibration, thus reducing the adverse effects of external forces and vibrations on the grinding base 5 during the grinding process, thereby improving the stability of the grinding base 5.

[0029] The elastic damping sleeve 8 includes an elastic inner layer 81 and a supporting outer layer 82. The elastic inner layer 81 and the supporting outer layer 82 are bonded and fixed together. The elastic inner layer 81 is located inside the supporting outer layer 82. The elastic inner layer 81 is made of rubber, and the supporting outer layer 82 is made of short fiber. The supporting outer layer 82 can limit the excessive deformation of the elastic inner layer 81, thereby improving the durability of the elastic damping sleeve 8 and extending its fatigue life.

[0030] The outer support layer 82 is bent to form an annular protrusion 9. The outer wall of the annular protrusion 9 is in contact with the inner wall of the receiving groove 7, thereby improving the stability of the elastic shock-absorbing sleeve 8.

[0031] The machine body 1 is provided with a cross slide 4, which is located on one side of the grinding wheel 3. A grinding seat 5 for holding the drill bit is installed on the cross slide 4.

[0032] In this embodiment, the grinding base 5 includes a base 51 and a positioning plate 52. The base 51 and the positioning plate 52 are detachably connected. The base 51 is connected to the cross slide 4 by bolts. An arc-shaped hole 10 is provided on the base 51. The bolt passes through the arc-shaped hole 10 and is threadedly connected to the cross slide 4. The positioning plate 52 has a chuck hole.

[0033] The side wall of the base 51 has a marking area 16 with scale lines. By loosening the screw, the grinding seat 5 can be rotated so that the grinding seat 5 rotates around the positioning protrusion 6 as the axis, thereby adjusting the positional relationship between the grinding seat 5 and the grinding wheel 3. By observing the scale lines in the marking area 16, the position of the grinding seat 5 can be determined more quickly and accurately, thereby effectively improving efficiency.

[0034] It should be noted that since the base 51 and the positioning plate 52 are detachably connected, when either one is worn and needs to be replaced or maintained, only the individual part needs to be replaced, which can effectively reduce maintenance costs.

[0035] The base 51 is provided with a positioning protrusion 11, and the bottom of the positioning plate 52 is provided with a dovetail groove 12. The positioning protrusion 11 is adapted to the dovetail groove 12. The positioning protrusion 11 is inserted into the dovetail groove 12. The positioning protrusion 11 is restricted by the dovetail groove 12, thereby effectively ensuring the relative stability of the base 51 and the positioning plate 52.

[0036] Specifically, to achieve a detachable connection between the base 51 and the positioning plate 52, a fastener 14 is provided on the positioning plate 52. The fastener 14 is preferably a bolt. The side wall of the positioning protrusion 11 is provided with an installation groove. The fastener 14 is threadedly connected to the installation groove. This achieves a stable connection between the base 51 and the positioning plate 52, and also makes disassembly convenient.

[0037] Furthermore, to ensure that the mounting groove is aligned with the fastener 14 when the fastener 14 is installed, a limiting part 13 is provided at the end of the dovetail groove 12. The side wall of the limiting part 13 abuts against the side wall of the positioning protrusion 11, thereby ensuring that the relative positional relationship between the base 51 and the positioning plate 52 is stable, facilitating the installation of the fastener 14 and improving the installation efficiency of the base 51 and the positioning plate 52.

[0038] When disassembling the base 51 and the positioning plate 52, first rotate the fastener 14 to remove it, and then move the positioning plate 52 so that the positioning protrusion 11 disengages from the dovetail groove 12; when installing the base 51 and the positioning plate 52, first move the positioning plate 52 so that the positioning protrusion 11 is inserted into the dovetail groove 12 until the side wall of the limiting part 13 abuts against the side wall of the positioning protrusion 11, and finally thread the fastener 14 through the positioning plate 52 and connect it to the mounting groove. The operation is simple and the disassembly and assembly are convenient.

[0039] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency point-hole drill sharpening machine, comprising a machine body (1), a rotary driving source (2) is arranged on the machine body (1), and a grinding wheel (3) is connected to an output end of the rotary driving source (2), characterized in that: The machine body (1) is provided with a cross-shaped drag plate (4) on one side of the grinding wheel (3), the cross-shaped drag plate (4) is provided with a grinding seat (5) for clamping a drill bit, the bottom of the grinding seat (5) is provided with a positioning protrusion (6), the cross-shaped drag plate (4) is provided with a containing groove (7), the containing groove (7) is provided with an elastic damping sleeve (8), the cross section of the elastic damping sleeve (8) is V-shaped structure, and the opening of the V-shaped structure faces the inner side wall of the containing groove (7), the positioning protrusion (6) is inserted into the containing groove (7), and the elastic damping sleeve (8) is located between the outer side wall of the positioning protrusion (6) and the inner wall of the containing groove (7), and the outer side wall of the positioning protrusion (6) is fitted with the inner side wall of the elastic damping sleeve (8).

2. The high-efficiency point-hole drill bit machine of claim 1, wherein: The elastic damping sleeve (8) comprises an elastic inner layer (81) and a supporting outer layer (82), the elastic inner layer (81) and the supporting outer layer (82) are adhesively fixed, the elastic inner layer (81) is located in the supporting outer layer (82), the elastic inner layer (81) is made of rubber material, and the supporting outer layer (82) is made of short fiber material.

3. The machine of claim 2, wherein: The supporting outer layer (82) is bent to form an annular protrusion (9), and the outer side wall of the annular protrusion (9) abuts against the inner side wall of the containing groove (7).

4. The high-efficiency point-hole drill bit machine of claim 1, wherein: The grinding seat (5) comprises a base (51) and a positioning plate (52), the base (51) and the positioning plate (52) are detachably connected, the base (51) is connected with the cross-shaped drag plate (4) through bolts, the base (51) is provided with an arc-shaped hole (10), the bolts pass through the arc-shaped hole (10) and are threadedly connected with the cross-shaped drag plate (4), and the positioning plate (52) is provided with a chuck hole.

5. The high-efficiency point-hole drill bit machine of claim 4, wherein: The base (51) is provided with a positioning protrusion (11), the bottom of the positioning plate (52) is provided with a dovetail groove (12), the positioning protrusion (11) is matched with the dovetail groove (12), and the positioning protrusion (11) is inserted into the dovetail groove (12).

6. The high-efficiency point-hole drill bit machine of claim 5, wherein: The end of the dovetail groove (12) is provided with a limiting portion (13), and the side wall of the limiting portion (13) abuts against the side wall of the positioning protrusion (11).

7. The high-efficiency point-hole drill bit machine of claim 6, wherein: The positioning plate (52) is provided with a fastener (14), and the side wall of the positioning protrusion (11) is provided with a mounting groove.

8. The high-efficiency point-hole drill bit machine of claim 6, wherein: The side wall of the base (51) is provided with a marking area (16) with a marking scale.

9. The high-efficiency point-hole drill bit machine of claim 1, wherein: The machine body (1) is provided with a tool holder (17).

10. The high-efficiency point-hole drill bit machine of claim 1, wherein: The bottom of the machine body (1) is provided with a plurality of rubber footings (15), and the rubber footings (15) are circular truncated cones with gradually decreasing cross sections from top to bottom.

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