Anti-cracking high-strength tapper cutter

Abstract

The utility model relates to the field of tappers, and discloses an anti-cracking high-strength tapper cutter which comprises a tapper, a chip removal U-shaped groove is formed in the bottom of the tapper, and two sets of cutter bits which are symmetrical to each other are fixedly installed on the two sides, corresponding to the chip removal U-shaped groove, of the bottom of the tapper. The two sides, corresponding to the two sides of the chip removal U-shaped groove, of the tapper are each provided with a circular chip removal groove, the two circular chip removal grooves communicate with the chip removal U-shaped groove, square grooves are formed in the positions, close to the four corresponding corners of the top, of the tapper, a vertical connecting sleeve is fixedly installed at the top of the tapper, and a vertical connecting rod is movably installed in the connecting sleeve. The connecting rod is provided with a first semi-arc groove, a steel ball is movably installed in the first semi-arc groove, and the connecting rod is provided with a limiting assembly, the device is good in anti-skid effect, the situation that the connecting position slips when the connecting rod drives the connecting sleeve to rotate is effectively prevented, and the efficiency when the connecting sleeve drives the tapper to rotate is effectively improved; and the working efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the field of hole openers, in particular to a high-strength hole opener tool that is anti-cracking. Background Art

[0002] A hole opener tool, also known as a hole saw or hole saw, is a special circular saw commonly used in modern industry and engineering. The main function of this tool is to perform precise drilling on various materials. The hole opener has a variety of blades, including high-speed steel, bimetal, etc., which can be used in a wide range of applications. Relying on these blades, the hole opener can punch holes in materials that are difficult to handle with high-speed steel and bimetal. During the rotation process, the drive device drives the hole opener to rotate. During the rotation process, the connecting rod and the drive device on the hole opener bear a very large tension force. When force is applied to the workpiece, the connection between the hole opener and the drive device is extremely prone to slippage, causing the drive device to idle. For this reason, we propose a high-strength hole opener tool that is anti-cracking. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-strength hole opener tool that is anti-cracking and solves the above-mentioned problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a crack-proof high-strength hole opener tool, comprising a hole opener, a chip removal U-shaped groove is provided near the middle of the bottom of the hole opener, two symmetrical groups of cutter heads are fixedly installed on the bottom of the hole opener corresponding to the two sides of the chip removal U-shaped groove, circular chip removal grooves are provided on both sides of the hole opener corresponding to the two sides of the chip removal U-shaped groove, the two groups of circular chip removal grooves and the chip removal U-shaped groove are interconnected, square grooves are provided at the four corners corresponding to the top of the hole opener, a vertical connecting sleeve is fixedly installed on the top of the hole opener, a vertical connecting rod is movably installed in the connecting sleeve, a semi-circular arc groove is provided on the connecting rod, a steel ball is movably installed in the semi-circular arc groove, and a limiting position component is provided on the connecting rod.

[0007] Preferably, the limit assembly includes a limit shaft, a vertical pole and a fixed rod, a horizontal limit shaft is movably connected to the connecting rod just above the corresponding steel ball, a vertical vertical pole is movably mounted on one end of the limit shaft, a fixed rod perpendicular to the vertical pole is fixedly connected to the vertical pole near the top, and the outer wall of the steel ball fits with the outer wall of the limit shaft.

[0008] Preferably, a limiting groove is provided on the outer wall of the connecting sleeve, and the end of the fixing rod facing away from the vertical rod is movably clamped in the limiting groove.

[0009] Preferably, a semi-circular arc groove 1 is provided on both sides of the connecting rod, the height of the semi-circular arc groove 1 is the same length as the connecting rod, and half of the outer wall of the steel ball fits with the inner wall of the semi-circular arc groove 1.

[0010] Preferably, two semi-circular arc grooves are provided on the inner walls on both sides of the connecting sleeve, and the inner wall of the two semi-circular arc grooves fits with half of the outer wall of the steel ball.

[0011] Preferably, both ends of the limiting shaft extend out of both sides of the connecting sleeve through two groups of semicircular arc grooves.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a high-strength hole opener tool that is anti-cracking and has the following beneficial effects:

[0014] 1. The anti-cracking high-strength hole opener tool wraps the steel balls through the semi-circular groove one and the semi-circular groove two. The extrusion pressure provided by the steel balls in the semi-circular groove one and the semi-circular groove two prevents the connecting rod from driving the connecting sleeve to rotate and slipping during the rotation process, and then the limiting shaft is pushed to press the positions of the two groups of steel balls, and then the limiting shaft is pulled to make the fixing rod on the vertical rod clamped into the limiting groove, preventing the two groups of steel balls from being thrown out of the semi-circular groove one and the semi-circular groove two by centrifugal force during the rotation of the connecting sleeve. This device has a good anti-skid effect, effectively preventing the connecting rod from slipping at the connection when driving the connecting sleeve to rotate, effectively improving the efficiency of the connecting sleeve driving the hole opener to rotate, and ensuring the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the limit shaft of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the connecting sleeve of the utility model.

[0018] In the figure: 1. hole opener; 2. U-shaped chip removal groove; 3. cutter head; 4. circular chip removal groove; 5. square groove; 6. connecting sleeve; 7. connecting rod; 8. semi-circular arc groove 1; 9. semi-circular arc groove 2; 10. steel ball; 11. limit shaft; 12. vertical rod; 13. fixing rod; 14. limit groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 A high-strength hole opener tool that prevents collapse includes a hole opener 1. A chip removal U-shaped groove 2 is provided at the bottom of the hole opener 1 near the middle. Two sets of cutter heads 3 are fixedly installed symmetrically on both sides of the bottom of the hole opener 1 corresponding to the chip removal U-shaped groove 2. Circular chip removal grooves 4 are provided on both sides of the hole opener 1 corresponding to the chip removal U-shaped groove 2. The two sets of circular chip removal grooves 4 are connected to the chip removal U-shaped groove 2. Square grooves 5 are provided at four corners corresponding to the top of the hole opener 1. A vertical connecting sleeve 6 is fixedly installed at the top of the hole opener 1. A vertical connecting rod 7 is movably installed in the connecting sleeve 6. A semicircular arc groove 8 is provided on the connecting rod 7. A steel ball 10 is movably installed in the semicircular arc groove 8. A limiting position component is provided on the connecting rod 7.

[0021] The limiting assembly includes a limiting shaft 11, a vertical rod 12 and a fixing rod 13. A horizontal limiting shaft 11 is movably connected to the connecting rod 7 just above the corresponding steel ball 10. A vertical vertical rod 12 is movably installed on one end of the limiting shaft 11. A fixing rod 13 perpendicular to the vertical rod 12 is fixedly connected to the vertical rod 12 near the top. The outer wall of the steel ball 10 fits the outer wall of the limiting shaft 11. The limiting shaft 11 is pulled backward to slide on the connecting rod 7 and the connecting sleeve 6. The end of the sliding fixing rod 13 of the limiting shaft 11 is clamped into the limiting groove 14, so that the positions of the two groups of steel balls 10 in the semicircular arc groove 1 8 and the semicircular arc groove 2 9 can be fixed.

[0022] A limiting groove 14 is provided on the outer wall of the connecting sleeve 6, and the end of the fixing rod 13 away from the vertical rod 12 is movably connected to the inside of the limiting groove 14. This device has a good anti-slip effect, which effectively prevents the connecting rod 7 from slipping at the connection when driving the connecting sleeve 6 to rotate, effectively improves the efficiency of the connecting sleeve 6 driving the hole opener 1 to rotate, and ensures the working efficiency.

[0023] A semi-circular groove 8 is provided on both sides of the connecting rod 7. The height of the semi-circular groove 8 is the same as that of the connecting rod 7. Half of the outer wall of the steel ball 10 fits with the inner wall of the semi-circular groove 8. When the device starts to work, the connecting rod 7 is first placed in the connecting sleeve 6 so that the bottom end of the connecting rod 7 fits with the top of the hole opener 1, and then two groups of steel balls 10 are placed in the semi-circular groove 8 so that the semi-circular groove 1 8 and the semi-circular groove 2 9 wrap the steel balls 10.

[0024] Semi-circular grooves 29 are provided on the inner walls of both sides of the connecting sleeve 6, and the inner walls of the semi-circular grooves 29 are in contact with half of the outer walls of the steel ball 10. During the rotation of the hole opener 1, the steel ball 10 will not move left and right in the semi-circular grooves 1 8 and 2 9, and the end of the limiting shaft 11 extends to the outside of the connecting sleeve 6 through the two groups of semi-circular grooves 1 8 and 2 9.

[0025] The two ends of the limiting shaft 11 extend out of the two sides of the connecting sleeve 6 through two sets of semicircular arc grooves 8, and then the vertical rod 12 is installed on the end of the limiting shaft 11, and then the limiting shaft 11 is rotated to align the fixing rod 13 on the vertical rod 12 with the limiting groove 14.

[0026] Working principle: When the device starts to work, firstly, the connecting rod 7 is placed in the connecting sleeve 6, so that the bottom end of the connecting rod 7 fits with the top of the hole opener 1, and then two sets of steel balls 10 are placed in the semi-circular arc groove 1 8, so that the semi-circular arc groove 1 8 and the semi-circular arc groove 2 9 wrap the steel balls 10, so that the steel balls 10 will not move left and right in the semi-circular arc groove 1 8 and the semi-circular arc groove 2 9 during the rotation of the hole opener 1, and the end of the limit shaft 11 passes through the two sets of semi-circular arc grooves 1 8 and the semi-circular arc grooves 2 9. Extend to the outside of the connecting sleeve 6, then install the vertical rod 12 on the end of the limit shaft 11, then rotate the limit shaft 11 to align the fixing rod 13 on the vertical rod 12 with the limiting groove 14, and then pull the limit shaft 11 backward to make the limit shaft 11 slide on the connecting rod 7 and the connecting sleeve 6, and the end of the sliding fixing rod 13 of the limit shaft 11 is clamped into the limiting groove 14, so that the positions of the two groups of steel balls 10 in the semicircular arc groove 1 8 and the semicircular arc groove 2 9 can be fixed.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength hole opener tool that is anti-cracking, comprising a hole opener (1), characterized in that: A chip removal U-shaped groove (2) is provided near the middle of the bottom of the hole opener (1), two sets of cutter heads (3) are fixedly installed symmetrically on both sides of the bottom of the hole opener (1) corresponding to the chip removal U-shaped groove (2), circular chip removal grooves (4) are provided on both sides of the hole opener (1) corresponding to the chip removal U-shaped groove (2), the two sets of circular chip removal grooves (4) and the chip removal U-shaped groove (2) are mutually connected, square grooves (5) are provided at four corners near the top of the hole opener (1), a vertical connecting sleeve (6) is fixedly installed on the top of the hole opener (1), a vertical connecting rod (7) is movably installed in the connecting sleeve (6), a semicircular arc groove (8) is provided on the connecting rod (7), a steel ball (10) is movably installed in the semicircular arc groove (8), and a limit position component is provided on the connecting rod (7).

2. The anti-cracking high-strength hole opener tool according to claim 1, characterized in that: The limiting assembly comprises a limiting shaft (11), a vertical pole (12) and a fixing rod (13); a horizontal limiting shaft (11) is movably connected to the connecting rod (7) just above the corresponding steel ball (10); a vertical vertical pole (12) is movably mounted on one end of the limiting shaft (11); a fixing rod (13) perpendicular to the vertical pole (12) is fixedly connected to the vertical pole (12) near the top; and the outer wall of the steel ball (10) is in contact with the outer wall of the limiting shaft (11).

3. The anti-cracking high-strength hole opener tool according to claim 2, characterized in that: The outer wall of the connecting sleeve (6) is provided with a limiting groove (14), and the end of the fixing rod (13) facing away from the vertical rod (12) is movably clamped in the limiting groove (14).

4. The anti-cracking high-strength hole opener tool according to claim 1, characterized in that: Semi-circular arc grooves (8) are provided on both sides of the connecting rod (7), the height of the semi-circular arc grooves (8) is the same as the length of the connecting rod (7), and half of the outer wall of the steel ball (10) fits with the inner wall of the semi-circular arc grooves (8).

5. The anti-cracking high-strength hole opener tool according to claim 4, characterized in that: Semi-circular arc grooves (9) are provided on the inner walls of both sides of the connecting sleeve (6), and the inner wall of the semi-circular arc groove (9) fits with half of the outer wall of the steel ball (10).

6. The anti-cracking high-strength hole opener tool according to claim 2, characterized in that: The two ends of the limiting shaft (11) extend out of the two sides of the connecting sleeve (6) through two groups of semicircular arc grooves (8).

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