Multifunctional clamp for deep hole drilling

Abstract

The utility model discloses a multifunctional fixture for deep hole drilling, which comprises a base, a plurality of mounting seats are fixedly mounted at the bottom of the base, two clamping blocks are slidably mounted at the top of the base, and a bidirectional driving mechanism for driving the two clamping blocks to move reversely at the same time is mounted at the bottom of the base. The top of each clamping block is fixedly connected with a guide plate through a plurality of inner threaded pipes, long-rod bolts are installed at the top ends of the inner threaded pipes in a matched mode, the outer walls of the long-rod bolts are movably sleeved with pressing blocks, guide grooves are formed in the upper portions of the guide plates, and a plurality of guide rods are slidably arranged on the guide plates in a penetrating mode. Through the arrangement of the upper driving mechanism, the lower driving mechanism and the two clamping blocks, the bottom end of a workpiece can be fixedly clamped, the workpiece can be tightly pressed on the base through the pressing block through the cooperation of the inner threaded pipe and the long-rod bolt so as to ensure the fixing reliability of the workpiece, and through the arrangement of the clamping base, the roller and the like, the drill bit can be guided, and the machining precision is improved. The stability of the drill bit in the drilling process is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a multi-functional fixture for deep hole drilling. Background Technology

[0002] Deep hole machining refers to machining holes with a length-to-diameter ratio greater than 10. In most cases, deep holes have a depth-to-diameter ratio L / d ≥ 100, such as cylinder holes, axial oil holes of shafts, hollow spindle holes, and hydraulic valve holes. During the deep hole drilling process, a fixture is required to hold the workpiece in place.

[0003] Currently, most fixtures used for deep hole drilling can only fix and hold the workpiece locally. For longer workpieces, the clamping stability is poor, and they do not have the function of guiding the drill bit, which needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a multifunctional fixture for deep hole drilling to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multifunctional chuck for deep hole drilling includes a base with multiple mounting seats fixedly installed at the bottom. Two clamping blocks are slidably mounted on the top of the base. A bidirectional drive mechanism for driving the two clamping blocks to move simultaneously in opposite directions is installed at the bottom of the base. Guide plates are fixedly connected to the top of each clamping block through multiple internally threaded tubes. Long bolts are fitted at the top of the internally threaded tubes. Pressure blocks are movably sleeved on the outer wall of the long bolts. Guide grooves are provided above each guide plate. Multiple guide rods are slidably inserted through the guide plates. The top of each guide rod is fixedly connected to the bottom of the guide groove. Springs are sleeved on the outer wall of the guide rod located between the guide groove and the guide plate. A sliding rod is adjustablely mounted on the guide groove. A clamping seat is fixedly mounted at the end of the sliding rod. Two rollers are rotatably mounted on the outer wall of the clamping seat. A vertical rod is fixedly mounted on the top of the sliding rod. A ball bearing is mounted on the top of the vertical rod.

[0007] As a further embodiment of this utility model, a limit block is fixedly installed at the bottom end of the guide rod.

[0008] As a further embodiment of this utility model: a second slider is slidably mounted on the guide groove, a first hand-tightening bolt is installed on the top of the second slider through a threaded hole, a guide sleeve is slidably sleeved on the outer wall of the slide rod, the bottom of the guide sleeve is fixedly connected to the corresponding second slider, and a second hand-tightening bolt is installed on the outer wall of the guide sleeve through a threaded hole.

[0009] As a further embodiment of this utility model: a plurality of locking screws are slidably installed on one of the clamps, one end of the locking screw is fixedly connected to another clamp, and the other end of the locking screw is fitted with a nut.

[0010] As a further embodiment of this utility model: two sliders are slidably installed on the bottom of the base through a sliding groove; the bidirectional drive mechanism includes a bidirectional screw rod rotatably installed on the bottom of the base through a bearing seat; the sliders are all fitted onto the bidirectional screw rod through threaded holes; and the bottom of the clamping block is fixedly connected to the corresponding slider.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model, through the setting of upper and lower driving mechanisms and two clamping blocks, can fix and clamp the bottom end of the workpiece. Through the cooperation of the internal threaded tube and the long rod bolt, the workpiece can be pressed tightly onto the base by the pressure block to ensure the reliability of the workpiece fixation. By setting the clamping seat, rollers, etc., the drill bit is guided to improve the stability of the drill bit during the drilling process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a multi-functional fixture for deep hole drilling.

[0014] Figure 2 This is a schematic diagram of the guide groove structure of a multi-functional fixture for deep hole drilling.

[0015] Figure 3 This is a schematic diagram of the roller structure in a multi-functional fixture for deep hole drilling.

[0016] The components include: base 1, mounting seat 2, slide groove 3, bidirectional screw 4, slider 5, clamping block 6, internal threaded tube 7, long rod bolt 8, pressure block 9, guide plate 10, guide rod 11, limit block 12, spring 13, guide groove 14, second slider 15, first hand-tightening bolt 16, guide sleeve 17, second hand-tightening bolt 18, slide rod 19, vertical rod 20, ball bearing 21, clamping seat 22, roller 23, locking screw 24, nut 25, and drill bit 26. Detailed Implementation

[0017] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3In this embodiment of the present invention, a multifunctional jig for deep hole drilling includes a base 1 with multiple mounting seats 2 fixedly installed at the bottom. Two clamping blocks 6 are slidably mounted on the top of the base 1. A bidirectional drive mechanism for driving the two clamping blocks 6 to move simultaneously in opposite directions is installed at the bottom of the base 1. Each clamping block 6 has a guide plate 10 fixedly connected to its top via multiple internally threaded tubes 7. A long bolt 8 is fitted onto the top of each internally threaded tube 7. A pressure block 9 is movably sleeved on the outer wall of the long bolt 8. Above the guide plates 10... A guide groove 14 is provided, and multiple guide rods 11 are slidably passed through the guide plate 10. The top end of the guide rod 11 is fixedly connected to the bottom of the guide groove 14. A spring 13 is sleeved on the outer wall of the guide rod 11 between the guide groove 14 and the guide plate 10. A slide rod 19 is installed in an adjustable position on the guide groove 14. A clamp 22 is fixedly installed at the end of the slide rod 19. Two rollers 23 are rotatably installed on the outer wall of the clamp 22. A vertical rod 20 is fixedly installed at the top of the slide rod 19. A ball bearing 21 is installed at the top end of the vertical rod 20.

[0019] By adopting the above-mentioned scheme, in use, after placing the workpiece to be processed on the base 1, the bidirectional drive mechanism is operated to drive the two clamping blocks 6 to move in opposite directions simultaneously, fixing and clamping the bottom end of the workpiece. Then, the long rod bolts 8 are tightened on each internal threaded tube 7 to press the pressure block 9 against the top of the workpiece, thereby pressing the workpiece firmly onto the base 1 to ensure the reliability of the workpiece fixation. Then, the drill is operated so that its drill bit 26 is aligned with the hole to be drilled at the top of the workpiece. Then, the position of the slide rod 19 is adjusted on the guide groove 14 so that the rollers 23 on the two clamping seats 22 are in close contact with the drill bit 26 from both sides, which can act as a retainer for the drill bit 26, so as to guide the drill rod located outside the workpiece in the early stage of drilling, thereby improving the stability of the drill bit 26. When the drill head descends, its bottom surface will first contact the ball bearings 21 at the top of the two vertical rods 20, and then push the guide rod 11 and slide rod 19 to move downward, compressing the spring 13, thereby avoiding interference with the stroke of the drill.

[0020] Specific combination Figure 1 In one embodiment of this utility model, a limiting block 12 is fixedly installed at the bottom end of the guide rod 11. By setting the limiting block 12, the guide rod 11 can be prevented from falling off the guide plate 10.

[0021] Specific combination Figure 1 and Figure 2In one embodiment of this utility model, a second slider 15 is slidably mounted on the guide groove 14, and a first hand-tightening bolt 16 is installed on the top of the second slider 15 through a threaded hole. A guide sleeve 17 is slidably sleeved on the outer wall of the slide rod 19, and the bottom of the guide sleeve 17 is fixedly connected to the corresponding second slider 15. A second hand-tightening bolt 18 is installed on the outer wall of the guide sleeve 17 through a threaded hole.

[0022] By cooperating with the guide groove 14 and the second slider 15, and with the slider 19 and the second guide groove 17, the position of the slider 19 can be adjusted on the guide groove 14. The operation is simple and convenient. Furthermore, the setting of the first hand-tightening bolt 16 and the second hand-tightening bolt 18 makes it easy to lock the position of the slider 19.

[0023] Specific combination Figure 1-3 In one embodiment of the present invention, a plurality of locking screws 24 are slidably installed on one of the clamps 22, one end of the locking screw 24 is fixedly connected to another clamp 22, and the other end of the locking screw 24 is fitted with a nut 25.

[0024] The locking screw 24 and nut 25 work together to position the two clamps 22 on both sides of the drill bit 26, so as to ensure that the roller 23 can be stably attached to the drill bit 26.

[0025] Specific combination Figure 1 In one embodiment of this utility model, two sliders 5 are slidably installed on the bottom of the base 1 through the sliding groove 3. The bidirectional drive mechanism includes a bidirectional screw 4 rotatably installed on the bottom of the base 1 through a bearing seat. The sliders 5 are all sleeved on the bidirectional screw 4 through threaded holes. The bottom of the clamping block 6 is fixedly connected to the corresponding slider 5.

[0026] By rotating the bidirectional screw 4, the two sliders 5 can be driven to move simultaneously in one direction, so that the two clamping blocks 6 can be used to fix and hold the workpiece.

[0027] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional fixture for deep hole drilling, characterized in that: The base (1) includes a base with multiple mounting seats (2) fixedly installed at the bottom. Two clamping blocks (6) are slidably installed on the top of the base (1). A bidirectional drive mechanism for driving the two clamping blocks (6) to move in opposite directions simultaneously is installed at the bottom of the base (1). The top of each clamping block (6) is fixedly connected to a guide plate (10) through multiple internal threaded tubes (7). A long rod bolt (8) is fitted at the top of the internal threaded tube (7). A pressure block (9) is movably sleeved on the outer wall of the long rod bolt (8). A guide groove (14) is provided above each guide plate (10). Multiple guide rods (11) are slidably inserted on the guide groove (14). The top of the guide rod (11) is fixedly connected to the bottom of the guide groove (14). A spring (13) is sleeved on the outer wall of the guide rod (11) between the guide groove (14) and the guide plate (10). A slide rod (19) is installed on the guide groove (14) in an adjustable position. A clamp (22) is fixedly installed at the end of the slide rod (19). Two rollers (23) are rotatably installed on the outer wall of the clamp (22). A vertical rod (20) is fixedly installed at the top of the slide rod (19). A ball bearing (21) is installed at the top of the vertical rod (20).

2. The multi-functional fixture for deep hole drilling according to claim 1, characterized in that: A limit block (12) is fixedly installed at the bottom end of the guide rod (11).

3. The multi-functional fixture for deep hole drilling according to claim 1, characterized in that: A second slider (15) is slidably mounted on the guide groove (14). A first hand-tightening bolt (16) is installed on the top of the second slider (15) through a threaded hole. A guide sleeve (17) is slidably sleeved on the outer wall of the slide rod (19). The bottom of the guide sleeve (17) is fixedly connected to the corresponding second slider (15). A second hand-tightening bolt (18) is installed on the outer wall of the guide sleeve (17) through a threaded hole.

4. The multi-functional fixture for deep hole drilling according to claim 1, characterized in that: A plurality of locking screws (24) are slidably installed on one of the clamps (22), one end of the locking screw (24) is fixedly connected to another clamp (22), and the other end of the locking screw (24) is fitted with a nut (25).

5. A multi-functional fixture for deep hole drilling according to claim 1, characterized in that: The bottom of the base (1) has two sliders (5) that are slidably installed through the groove (3). The bidirectional drive mechanism includes a bidirectional screw (4) that is rotatably installed on the bottom of the base (1) through a bearing seat. The sliders (5) are all fitted onto the bidirectional screw (4) through threaded holes. The bottom of the clamp (6) is fixedly connected to the corresponding slider (5).

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