Round steel blank drilling clamp

Abstract

The invention relates to the technical field of steel machining, and discloses a round steel blank drilling clamp which comprises a base, a lower clamping frame is fixed to the upper end of the base, and an upper clamping frame used for matching is arranged at the upper end of the lower clamping frame; a plurality of groups of vertical telescopic vertical rods are arranged on the inner side of the lower clamping frame, and the telescopic vertical rods are used for supporting; the upper clamping frame is divided into multiple sets of downward V-shaped blocks, hollow limiting pipes are fixed between the V-shaped blocks, the multiple sets of hollow limiting pipes are communicated, water outlets communicated with the interiors of the hollow limiting pipes are formed in the outer walls of the hollow limiting pipes, and water flows out of the water outlets for cooling; and a water inlet is formed in the upper end of one V-shaped block. By arranging the cloth layer, the driving lantern ring can move upwards to compress the extrusion spring, it is ensured that a round steel blank is fixed, the cloth layer is attached to the outer wall of the cloth layer, drilling can be achieved through a round opening formed in the cloth layer, and the situation that generated cuttings scratch the round steel blank along with rotation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steel processing, in particular to a round steel blank drilling fixture. Background Art

[0002] When round steel blanks need to be processed, drilling machines are often used to drill holes in the round steel blanks. During the processing, the round steel blanks need to be clamped and tightened to prevent the round steel blanks from moving during the drilling process.

[0003] Although there are currently clamps that can clamp round objects, debris is inevitably generated during the drilling process. Therefore, the debris moves outward and has a chance to be entangled on the drill bit. As the drill bit rotates, the surface of the round steel blank is ground, leaving marks on the surface of the round steel blank, and even affecting the accuracy of the round steel blank. For this reason, a clamp that can clamp and reduce the generation of marks is proposed. Summary of the invention

[0004] The object of the present invention is to provide a round steel blank drilling fixture to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a round steel blank drilling fixture, comprising a base, a lower clamping frame is fixed to the upper end of the base, and an upper clamping frame for matching is provided at the upper end of the lower clamping frame;

[0006] A plurality of groups of vertical telescopic vertical rods are provided on the inner side of the lower clamping frame, and the telescopic vertical rods are used for supporting;

[0007] The upper clamping frame is divided into multiple groups of downward V-shaped blocks, hollow limit tubes are fixed between the V-shaped blocks, multiple groups of hollow limit tubes are connected, and the outer wall of the hollow limit tube is provided with a water outlet connected with the inside, and the water in the water outlet is used for cooling, and a water inlet is provided at the upper end of one of the V-shaped blocks;

[0008] The lower end of the hollow limiting tube is provided with a cloth layer extruded on the outer wall of the round steel blank, and the cloth layer is used to prevent chips from being ground with the round steel blank.

[0009] Preferably, the lower clamping frame is also arranged in a V-shape, and a plurality of limiting metal rods with smooth outer walls are fixed to the upper end of the lower clamping frame. The limiting metal rods extend to the interior of the upper clamping frame, and the two are arranged in a close fit. The limiting metal rods are used to support the limiting effect, avoid damage to the clamping frame and cause dislocation, and ensure perfect cooperation during the fixing process of the lower clamping frame and the upper clamping frame.

[0010] Preferably, a buckle opening 1 is fixed on the outer side of the lower clamping frame, and the interior of the buckle opening 1 has a thread. A buckle opening 2 is fixed on the outer wall of the upper clamping frame, and a bolt is rotatably installed in the buckle opening 2. The bolt can be matched with the buckle opening 1 to facilitate fixation.

[0011] Preferably, a fixing box is fixed to the lower end of the lower clamping frame, a metal thick plate is fixedly inlaid on the inner wall of the lower end of the lower clamping frame, a plurality of metal round openings arranged in an array are opened on the upper end of the metal thick plate, the telescopic vertical rod is inserted into the metal round opening, the upper end of the telescopic vertical rod is rounded, a return spring is fixed to the lower end of the telescopic vertical rod, the lower end of the return spring is fixed to the inner wall of the fixing box, the return spring pushes the telescopic vertical rod upward, and can make the telescopic vertical rod and the object at the upper end fit each other;

[0012] The outer wall of the telescopic vertical rod is provided with a plurality of groups of vertically arranged through-limit openings, wherein a plug rod for limiting is inserted inside one group of the through-limit openings, and the plug rod is used for limiting.

[0013] Preferably, the shape of the through-limiting opening is arc-shaped on the upper end and vertical on both sides of the lower end, which is convenient for inserting the insertion rod. At the same time, it can also be inserted under the action of the uneven telescopic vertical rods above and below. The cross-section of the insertion rod is semicircular, and the lower end can be fitted with the metal thick plate at the lower end for easy fixation.

[0014] Preferably, a rubber belt is provided at the upper end of the hollow limiting tube, a rubber plug is fixed at the lower end of the rubber belt, the rubber plug is plugged in the water outlet, and the rubber belt facilitates the removal and installation of the rubber plug;

[0015] A limiting sleeve is sleeved on the outer wall of the hollow limiting tube, and a part of the rubber plug sleeved on the limiting sleeve moves upward;

[0016] A hollow vertical tube is fixed to the lower end of the limiting sleeve, the lower end of the hollow vertical tube is closed and expands outward, an extrusion spring is sleeved on the outer wall of the hollow vertical tube, a driving ring is sleeved on the hollow vertical tube, the upper end of the driving ring is in contact with the extrusion spring, a cross bar is fixed to one side of the driving ring, and the outer wall of the cross bar is fixed to the cloth layer.

[0017] Preferably, the inner wall of the limiting sleeve is extruded with the outer wall of the hollow limiting tube, an annular cavity is provided inside the limiting sleeve, the inner side of the annular cavity coincides with a water outlet, and water can flow along the annular cavity into the hollow vertical tube;

[0018] The outer wall of the hollow vertical tube is provided with pinholes squeezed out by water, which are used to wet the cloth layer.

[0019] Preferably, a circular opening is provided at the upper end of the fabric layer, and an extension strip opening is provided outside the circular opening. The extension strip opening is provided on the fabric layer and has an expansion function to avoid tearing the fabric layer.

[0020] A rubber ring is fixed on the inner wall of the circular opening, an arc-shaped opening is provided on the inner side of the rubber ring, and the rubber ring can expand. A metal ring is provided in the extrusion sleeve in the arc-shaped opening, and there are multiple metal rings, which change in steps from large to small, and the metal rings can expand the rubber ring.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention arranges a cloth layer so that the driving ring moves upward to compress the extrusion spring, thereby ensuring that the round steel blank is fixed and the cloth layer is attached to its outer wall. The circular openings on the cloth layer can be used for drilling, thereby preventing the generated chips from scratching the round steel blank as it rotates.

[0023] (2) The present invention provides a hollow vertical pipe for water outlet, the rubber plug can be adjusted, the limit sleeve can slide to adjust the position, and the outer wall of the hollow vertical pipe can be used for water outlet, so as to wet the cloth layer and avoid damage to the cloth layer due to high drilling temperature.

[0024] (3) The present invention provides an adjustable circular opening, and clamps metal circular rings of different sizes on the inner side of the rubber ring to adjust the size of the circular opening to avoid damage to the fabric layer during the drilling process. Under the action of the extension strip and the rubber ring, the circular opening can be expanded.

[0025] (4) The present invention sets a telescopic vertical rod for compression, so that the telescopic vertical rod can be squeezed and moved downward and fit under the irregular round steel blank, which is equivalent to limiting the telescopic vertical rod and fitting the irregular round steel blank, thereby reducing the movement generated during the drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the lower clamping frame of the present invention;

[0028] Figure 3 It is a schematic diagram of the local structure of the telescopic vertical rod of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the upper clamping frame of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the fabric layer and its components of the present invention;

[0031] Figure 6It is a schematic diagram of the structure of both sides of the cloth layer of the present invention;

[0032] Figure 7 It is a schematic diagram of the local cross-sectional structure of the fabric layer of the present invention.

[0033] In the figure: 1. base; 2. lower clamping frame; 21. metal thick plate; 211. metal round mouth; 22. fixed box; 23. telescopic vertical rod; 231. through-limiting mouth; 232. plug rod; 233. reset spring; 24. limiting metal rod; 25. buckle mouth one; 3. upper clamping frame; 31. hollow limiting tube; 311. water outlet; 312. rubber belt; 313. rubber plug; 32. cloth layer; 321. limiting sleeve; 322. annular cavity; 323. hollow vertical tube; 324. extrusion spring; 325. driving sleeve; 326. cross bar; 327. round mouth; 328. extension strip mouth; 329. rubber ring; 33. buckle mouth two; 4. metal round ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-7 The present invention provides a technical solution: a round steel blank drilling fixture, comprising a base 1, a lower clamping frame 2 is fixed on the upper end of the base 1, and an upper clamping frame 3 for matching is provided on the upper end of the lower clamping frame 2;

[0036] The inner side of the lower clamping frame 2 is provided with a plurality of groups of vertical telescopic vertical rods 23, and the telescopic vertical rods 23 are used for support;

[0037] The upper clamping frame 3 is divided into a plurality of groups of downwardly facing V-shaped blocks, and hollow stop tubes 31 are fixed between the V-shaped blocks. The plurality of groups of hollow stop tubes 31 are connected and arranged, and a water outlet 311 connected to the inside is provided on the outer wall of the hollow stop tube 31, and water is discharged from the water outlet 311 for cooling, and a water inlet is provided at the upper end of one of the V-shaped blocks;

[0038] The lower end of the hollow limiting tube 31 is provided with a cloth layer 32 extruded on the outer wall of the round steel blank. The cloth layer 32 is used to block chips and grinding of the round steel blank. The driving ring 325 will move upward to compress the extrusion spring 324 to ensure that the round steel blank is fixed and the cloth layer 32 is attached to its outer wall. The circular opening 327 opened on the cloth layer 32 can realize drilling to prevent the chips from scratching the round steel blank as it rotates.

[0039] The lower clamping frame 2 is also arranged in a V shape, and a plurality of limiting metal rods 24 with smooth outer walls are fixed to the upper end of the lower clamping frame 2. The limiting metal rods 24 extend to the interior of the upper clamping frame 3, and the two are arranged in a close fit. The limiting metal rods are used to support the limiting effect to avoid damage to the clamping frame 3 and misalignment, and to ensure perfect cooperation between the lower clamping frame 2 and the upper clamping frame 3 during the fixing process.

[0040] A buckle opening 25 is fixed on the outer side of the lower clamping frame 2, and the interior of the buckle opening 25 has threads. A buckle opening 2 33 is fixed on the outer wall of the upper clamping frame 3, and a bolt is rotatably installed in the buckle opening 2 33. The bolt can be matched with the buckle opening 25 for easy fixation.

[0041] A fixed box 22 is fixed to the lower end of the lower clamping frame 2, and a metal thick plate 21 is fixedly inlaid on the inner wall of the lower end of the lower clamping frame 2. The upper end of the metal thick plate 21 is provided with a plurality of metal round openings 211 arranged in an array, and a telescopic vertical rod 23 is inserted into the metal round opening 211. The upper end of the telescopic vertical rod 23 is rounded, and a return spring 233 is fixed to the lower end of the telescopic vertical rod 23. The lower end of the return spring 233 is fixed to the inner wall of the fixed box 22, and the return spring 233 pushes the telescopic vertical rod 23 upward, and enables the telescopic vertical rod 23 to fit the object at the upper end.

[0042] A plurality of vertically arranged through-limiting openings 231 are provided on the outer wall of the telescopic vertical rod 23 , and a rod 232 for limiting is inserted into one of the through-limiting openings 231 . The rod 232 is used for limiting.

[0043] The shape of the through-limiting opening 231 is arc-shaped at the upper end and vertical at the lower end, which is convenient for inserting the insertion rod 232. At the same time, it can also be inserted under the action of the uneven telescopic vertical rods 23. The cross section of the insertion rod 232 is semicircular, and the lower end can fit with the metal thick plate 21 at the lower end, which is convenient for fixing;

[0044] The telescopic vertical rod 23 can be squeezed and moved downward and fit under the irregular round steel blank, which is equivalent to limiting the telescopic vertical rod 23, fitting the irregular round steel blank, and reducing the movement generated during the drilling process.

[0045] A rubber band 312 is provided at the upper end of the hollow limiting tube 31, and a rubber plug 313 is fixed at the lower end of the rubber band 312. The rubber plug 313 is plugged in the water outlet 311, and the rubber band 312 facilitates the removal and installation of the rubber plug 313;

[0046] A limiting sleeve 321 is sleeved on the outer wall of the hollow limiting tube 31, and a portion of the rubber plug 313 sleeved on the limiting sleeve 321 moves upward;

[0047] A hollow vertical tube 323 is fixed to the lower end of the limiting sleeve 321. The lower end of the hollow vertical tube 323 is closed and expanded outward. An extrusion spring 324 is sleeved on the outer wall of the hollow vertical tube 323. A driving collar 325 is sleeved on the hollow vertical tube 323. The upper end of the driving collar 325 contacts the extrusion spring 324. A cross bar 326 is fixed to one side of the driving collar 325. The outer wall of the cross bar 326 is fixed to the cloth layer 32.

[0048] The inner wall of the limiting sleeve 321 is extruded with the outer wall of the hollow limiting tube 31, and an annular cavity 322 is provided inside the limiting sleeve 321. The inner side of the annular cavity 322 coincides with a water outlet 311, so that water can flow along the annular cavity 322 into the hollow vertical tube 323.

[0049] The outer wall of the hollow vertical tube 323 is provided with pinholes squeezed out by water, which are used to wet the cloth layer 32 .

[0050] A circular opening 327 is formed at the upper end of the fabric layer 32, and an extension strip opening 328 is formed outside the circular opening 327. The extension strip opening 328 is formed on the fabric layer 32 to expand the fabric layer 32 and prevent the fabric layer 32 from being torn.

[0051] A rubber ring 329 is fixed on the inner wall of the circular opening 327. An arc-shaped opening is provided on the inner side of the rubber ring 329. The rubber ring 329 can expand. A metal ring 4 is provided in the extrusion sleeve in the arc-shaped opening. There are multiple metal rings 4. The multiple metal rings 4 are stepped from large to small. The metal rings 4 can expand the rubber ring 329.

[0052] The metal rings 4 of different sizes are clamped on the inner side of the rubber ring 329 to adjust the sizes of the circular opening 327 to avoid damage to the fabric layer 32 during the drilling process. Under the action of the extension strip 328 and the rubber ring 329, the circular opening 327 can be expanded.

[0053] When in use, the bolt is turned to cancel the engagement with the buckle opening 25, and then the upper clamping frame 3 is lifted upward, and then the round steel blank is placed on the upper end of the lower clamping frame 2, and then the upper clamping frame 3 is matched with the lower clamping frame 2, and the bolt is tightened to fix the round steel blank, so as to facilitate drilling;

[0054] When the upper clamping frame 3 cooperates with the lower clamping frame 2, the limiting metal rod 24 on the lower clamping frame 2 is extended upward to the inside of the upper clamping frame 3 to achieve the limiting effect and avoid deviation. At the same time, the cloth layer 32 is squeezed with the round steel blank during the downward movement of the upper clamping frame 3, and as the squeezing force increases, the cloth layer 32 fits on the round steel blank. In order to fit and fix the round steel blank, the driving ring 325 moves upward to compress the squeezing spring 324, ensuring that the round steel blank is fixed and the cloth layer 32 fits on its outer wall. Drilling can be achieved through the circular opening 327 provided on the cloth layer 32, and it is also prevented that the chips generated during the rotation will scratch the round steel blank.

[0055] The water outlet 311 and the rubber plug 313 are provided to block the water outlet 311, and the rubber plug 313 can be adjusted, the limiting sleeve 321 can slide to adjust the position, and at the same time, the outer wall of the hollow vertical pipe 323 discharges water, so as to wet the cloth layer 32 and avoid the high drilling temperature from damaging the cloth layer 32;

[0056] When holes of different sizes are required, metal rings 4 of different sizes need to be clamped inside the rubber ring 329 to adjust the sizes of the circular opening 327 to avoid damage to the fabric layer 32 during the drilling process. Under the action of the extension strip 328 and the rubber ring 329, the circular opening 327 can be expanded.

[0057] When drilling an irregular round steel blank, it is squeezed with the lower clamping frame 2 and the telescopic vertical rod 23 at the same time, and the insertion rod 232 is pulled outward. The telescopic vertical rod 23 can be squeezed downward and fit under the irregular round steel blank. Subsequently, the insertion rod 232 is inserted, which is equivalent to limiting the telescopic vertical rod 23, relatively fitting the irregular round steel blank, and reducing the movement generated during the drilling process.

[0058] 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 round steel blank drilling fixture, characterized in that: It comprises a base (1), a lower clamping frame (2) is fixed to the upper end of the base (1), and an upper clamping frame (3) for matching is provided at the upper end of the lower clamping frame (2); A plurality of groups of vertical telescopic vertical rods (23) are provided on the inner side of the lower clamping frame (2), and the telescopic vertical rods (23) are used for support; The upper clamping frame (3) is divided into a plurality of groups of downwardly directed V-shaped blocks, a hollow limiting tube (31) is fixed between the V-shaped blocks, the plurality of groups of the hollow limiting tubes (31) are connected, a water outlet (311) connected to the inside is provided on the outer wall of the hollow limiting tube (31), water is discharged from the water outlet (311) for cooling, and a water inlet is provided at the upper end of one of the V-shaped blocks; The lower end of the hollow limiting tube (31) is provided with a cloth layer (32) extruded on the outer wall of the round steel blank, and the cloth layer (32) is used to prevent chips from being ground against the round steel blank.

2. The round steel blank drilling fixture according to claim 1, characterized in that: The lower clamping frame (2) is also arranged in a V-shape, and a plurality of limiting metal rods (24) with smooth outer walls are fixed to the upper end of the lower clamping frame (2), and the limiting metal rods (24) extend to the interior of the upper clamping frame (3), and the two are arranged in a close fit.

3. The round steel blank drilling fixture according to claim 1, characterized in that: A buckle opening 1 (25) is fixed on the outer side of the lower clamping frame (2), and the interior of the buckle opening 1 (25) has a thread. A buckle opening 2 (33) is fixed on the outer wall of the upper clamping frame (3), and a bolt is rotatably installed in the buckle opening 2 (33), and the bolt can be arranged in cooperation with the buckle opening 1 (25).

4. The round steel blank drilling fixture according to claim 1, characterized in that: A fixing box (22) is fixed at the lower end of the lower clamping frame (2), a metal thick plate (21) is fixedly inlaid on the inner wall of the lower end of the lower clamping frame (2), a plurality of metal round openings (211) are arranged in an array at the upper end of the metal thick plate (21), the telescopic vertical rod (23) is inserted into the metal round opening (211), the upper end of the telescopic vertical rod (23) is rounded, a return spring (233) is fixed at the lower end of the telescopic vertical rod (23), and the lower end of the return spring (233) is fixed to the inner wall of the fixing box (22); The outer wall of the telescopic vertical rod (23) is provided with a plurality of groups of vertically arranged through-limit openings (231), wherein an insertion rod (232) for limiting is inserted inside one group of the through-limit openings (231).

5. The round steel blank drilling fixture according to claim 4, characterized in that: The through-limiting opening (231) is in the shape of an arc-shaped upper end, with both sides and a vertical lower end, and the cross section of the insertion rod (232) is in the shape of a semicircle.

6. The round steel blank drilling fixture according to claim 1, characterized in that: A rubber belt (312) is provided at the upper end of the hollow limiting tube (31), a rubber plug (313) is fixed at the lower end of the rubber belt (312), and the rubber plug (313) is plugged in the water outlet (311); A limiting sleeve (321) is sleeved on the outer wall of the hollow limiting tube (31), and a portion of the rubber plug (313) sleeved on the limiting sleeve (321) moves upward; A hollow vertical tube (323) is fixed to the lower end of the limiting sleeve (321); the lower end of the hollow vertical tube (323) is closed and expands outward; an extrusion spring (324) is sleeved on the outer wall of the hollow vertical tube (323); a driving collar (325) is sleeved on the hollow vertical tube (323); the upper end of the driving collar (325) is in contact with the extrusion spring (324); a cross bar (326) is fixed to one side of the driving collar (325); and the outer wall of the cross bar (326) is fixed to the cloth layer (32).

7. The round steel blank drilling fixture according to claim 6, characterized in that: The inner wall of the limiting sleeve (321) is extruded with the outer wall of the hollow limiting tube (31); an annular cavity (322) is provided inside the limiting sleeve (321); the inner side of the annular cavity (322) coincides with a water outlet (311); The outer wall of the hollow vertical tube (323) is provided with pinholes squeezed out by water, which are used to wet the cloth layer (32).

8. The round steel blank drilling fixture according to claim 6, characterized in that: The upper end of the fabric layer (32) is provided with a circular opening (327), the outer side of the circular opening (327) is provided with an extension strip opening (328), and the extension strip opening (328) is opened on the fabric layer (32); A rubber ring (329) is fixed on the inner wall of the circular opening (327), an arc-shaped opening is provided on the inner side of the rubber ring (329), a metal ring (4) is extruded inside the arc-shaped opening, a plurality of the metal rings (4) are provided, and the plurality of the metal rings (4) are arranged in a step-wise manner from large to small.

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