A clamping fixture for drilling cylindrical workpieces

Abstract

This utility model discloses a clamping fixture for drilling cylindrical workpieces, comprising: a base, the top of which has interconnected V-shaped grooves and recesses arranged sequentially from top to bottom, the V-shaped grooves being used to hold the cylindrical workpiece; an inverted U-shaped plate, which covers the top of the base, the side wall of which has a connector for connecting to the outer wall of the base, and the top of which has a clamping member for abutting against the cylindrical workpiece; a drilling connector, which is located on top of the inverted U-shaped plate and above the cylindrical workpiece, and has a shaft hole communicating with the V-shaped grooves; and a pushing mechanism, the moving end of which extends into the V-shaped grooves and contacts the end of the cylindrical workpiece. This utility model, through the cooperation of the base, the inverted U-shaped plate, the drilling connector, and the pushing mechanism, can stably fix the cylindrical workpiece and accurately control the drilling spacing, greatly reducing drilling errors.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology for cylindrical workpieces, and specifically to a clamping fixture for drilling cylindrical workpieces. Background Technology

[0002] In machining, it is often necessary to drill holes in workpieces. Drilling holes in flat workpieces is very simple; however, drilling holes in the curved surfaces of cylindrical workpieces (such as round tubes, round steel tubes, etc.) is difficult because the curved surfaces of round tubes, round steel tubes, etc. make it very difficult to fix them during machining, making it inconvenient to drill holes.

[0003] The current method for drilling cylindrical workpieces typically involves first fixing the workpiece in a fixture at the machining station, and then drilling the workpiece using a drilling device. However, this method has the following drawbacks: 1. Because the cylindrical workpiece is circular, the fixture requires high precision; otherwise, it is easy for it to shift during drilling, causing errors and affecting the drilling effect. 2. Existing fixtures often cannot adjust the position of the cylindrical workpiece, resulting in low practicality. 3. Existing fixtures are often only suitable for one type of drilling device; therefore, when machining multiple hole diameters, multiple sets of different types of fixtures are required, which is inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping fixture for drilling cylindrical workpieces, so as to solve the problem that existing fixtures cannot stably clamp cylindrical workpieces, which leads to easy displacement during drilling.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A clamping fixture for drilling cylindrical workpieces includes:

[0007] The base has V-shaped through slots and grooves that are connected to each other from top to bottom on its top. The V-shaped through slots are used to place cylindrical workpieces.

[0008] An inverted U-shaped plate is placed on top of the base. The side wall of the inverted U-shaped plate is provided with a connector that connects to the outer wall of the base. The top of the inverted U-shaped plate is provided with a clamping member that abuts against the cylindrical workpiece.

[0009] A drilling connector is set on top of an inverted U-shaped plate and above a cylindrical workpiece. The drilling connector has a shaft hole that communicates with a V-shaped through groove.

[0010] And a pushing mechanism, which is located at one end of the base, and the moving end of the pushing mechanism extends into the V-shaped through groove and contacts the end of the cylindrical workpiece.

[0011] Furthermore, the aforementioned pushing mechanism includes a vertical plate vertically disposed at one end of the base, a connecting bolt disposed on the vertical plate for connection with the base, and a micrometer head horizontally disposed on the vertical plate and extending into the V-shaped through groove, wherein the moving end of the micrometer head contacts the end of the cylindrical workpiece.

[0012] Furthermore, the vertical plate is provided with through holes and grooves at intervals from top to bottom, and one end of the micro head passes through the through hole and extends into the V-shaped through groove;

[0013] The outer wall of the shank of the connecting bolt is provided with an annular abutment block. The outer diameter of the annular abutment block is larger than the width of the slide groove. The connecting bolt passes through the slide groove and is threadedly connected to the base. The annular abutment block abuts the vertical plate against the base.

[0014] Furthermore, the two end faces of the aforementioned inverted U-shaped plate are flush with the two end faces of the base, respectively.

[0015] Furthermore, the top of the inverted U-shaped plate is provided with a mounting hole that corresponds to and communicates with the V-shaped through groove, and the drilled connector is threadedly connected to the mounting hole.

[0016] Furthermore, the aforementioned V-shaped through groove and recess are both provided along the length direction of the base.

[0017] Furthermore, symmetrical limit slots are provided on both sides of the base, and the limit slots are arranged along the length of the base.

[0018] This utility model has the following beneficial effects:

[0019] This utility model discloses a clamping fixture for drilling cylindrical workpieces. A V-shaped groove on the base holds the cylindrical workpiece, while a recess below provides space for drilling. An inverted U-shaped plate is placed on top of the base to initially restrict the position of the cylindrical workpiece. The inverted U-shaped plate is connected to the base via a connector on its side wall. A clamping component at the top, working in conjunction with the V-shaped groove and recess, secures the cylindrical workpiece, thus stably fixing it in place. The shaft hole on the drilling connector matches the drill bit of an external drilling tool, facilitating drilling of the cylindrical workpiece, significantly reducing drilling errors, and improving drilling efficiency. A pushing mechanism precisely moves the cylindrical workpiece along the V-shaped groove according to drilling requirements, allowing for precise control of the spacing between holes and greatly reducing drilling errors. Furthermore, drilling connectors with different shaft hole sizes can be replaced to accommodate different hole diameters. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a clamping fixture for drilling cylindrical workpieces;

[0021] Figure 2This is a schematic diagram of the base structure;

[0022] Figure 3 A structural diagram of the mechanism;

[0023] Figure 4 This is a structural diagram of the vertical plate;

[0024] Figure 5 A cross-sectional view of a clamping fixture for drilling cylindrical workpieces.

[0025] In the diagram: 1. Base; 11. V-shaped through groove; 12. Groove; 13. Cylindrical workpiece; 14. Limiting through groove; 2. Inverted U-shaped plate; 21. Connector; 22. Clamping part; 23. Mounting hole; 3. Drilled connector; 4. Pushing mechanism; 41. Vertical plate; 411. Through hole; 412. Slide groove; 42. Connecting bolt; 43. Micrometer head; 44. Annular clamping block. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] like Figures 1 to 5 As shown, an embodiment of this utility model provides a clamping fixture for drilling cylindrical workpieces, including: a base 1, the top of which has interconnected V-shaped through grooves 11 and grooves 12 arranged sequentially from top to bottom. The V-shaped through grooves 11 are used to place cylindrical workpieces 13, which are located above the grooves 12. Both the V-shaped through grooves 11 and grooves 12 are arranged along the length of the base 1. In this embodiment, limiting through grooves 14 are symmetrically arranged on both side walls of the base 1, and the limiting through grooves 14 are arranged along the length of the base 1. The opening of the limiting through grooves 14 makes the base 1 have an I-shaped structure, which is used to cooperate with an external processing table. The position of the base 1 is restricted by setting limiting protrusions on the external processing table that match the limiting through grooves 14. In other embodiments of this utility model, the base 1 can also be connected and fixed to the processing table by bolts.

[0028] An inverted U-shaped plate 2 is placed on top of the base 1, with its two end faces flush with the end faces of the base 1. The side walls of the inverted U-shaped plate 2 are provided with connectors 21 that connect to the outer walls of the base 1. These connectors 21 are bolts, and two sets of connectors 21 are located on the two outer walls of the inverted U-shaped plate 2. Threaded through holes are provided on both sides of the inverted U-shaped plate 2, and corresponding threaded holes are provided on the two sides of the base 1. Bolts pass through the threaded through holes on the inverted U-shaped plate 2 and connect to the base 1. The inverted U-shaped plate 2 is connected by a threaded hole; the top of the inverted U-shaped plate 2 is provided with a clamping member 22 that abuts against the cylindrical workpiece 13; the top of the inverted U-shaped plate 2 is provided with a threaded connection hole that corresponds to and communicates with the V-shaped through groove 11; the clamping member 22 is a clamping bolt, which passes through the threaded connection hole at the top of the inverted U-shaped plate 2 and abuts against the outer wall of the cylindrical workpiece 13 on the V-shaped through groove 11; the cylindrical workpiece 13 can be fixed by the cooperation between the clamping member 22 and the V-shaped through groove 11; at the same time, the V-shaped through groove 11 can accommodate cylindrical workpieces 13 of different diameters.

[0029] A drilling connector 3 is disposed on top of the inverted U-shaped plate 2 and above the cylindrical workpiece 13. The drilling connector 3 has a shaft hole that communicates with the V-shaped through groove 11. The drilling connector 3 has a cylindrical structure. The top of the inverted U-shaped plate 2 has a mounting hole 23 that corresponds to and communicates with the V-shaped through groove 11. The drilling connector 3 is threadedly connected to the mounting hole 23. The inner wall of the mounting hole 23 has an internal thread, and the outer wall of the drilling connector 3 has an external thread that mates with the internal thread of the mounting hole 23 to achieve a threaded fit. The drilling connector 3 is used to match the drilling bit of an external drilling tool, and the shaft hole on the drilling connector 3 matches the drilling bit, which facilitates drilling the fixed cylindrical workpiece 13.

[0030] The base 1 includes a pushing mechanism 4, which is located at one end of the base 1. The moving end of the pushing mechanism 4 extends into the V-shaped groove 11 and contacts the end of the cylindrical workpiece 13. The pushing mechanism 4 is used to push the cylindrical workpiece 13 to move within the V-shaped groove 11 and change the position of the cylindrical workpiece 13, thereby changing the drilling position and facilitating precise control of the drilling position.

[0031] Specifically, the pushing mechanism 4 includes a vertical plate 41 vertically disposed at one end of the base 1, a connecting bolt 42 disposed on the vertical plate 41 for connection with the base 1, and a micro-head 43 horizontally passing through the vertical plate 41 and extending into the V-shaped through groove 11. The moving end of the micro-head 43 contacts the end of the cylindrical workpiece 13. The micro-head 43 is existing technology, and its specific structure will not be described in detail here. The vertical plate 41 is provided with through holes 411 and sliding grooves 412 spaced apart from top to bottom. One end of the micro-head 43 passes through the through hole 411 and extends into the V-shaped through groove 11. The moving end of the micro-head 43 contacts the end of the cylindrical workpiece 13. The screwing part of the micro-head 43 is located on the outside of the vertical plate 41. By rotating the screwing part of the micro-head 43, after the screwing part is rotated to the required scale, the moving end of the micro-head 43 can push the cylindrical workpiece 13 to move the corresponding distance, thereby accurately controlling the spacing of the drill holes.

[0032] An annular clamping block 44 is provided on the outer wall of the rod of the connecting bolt 42. The outer diameter of the annular clamping block 44 is larger than the width of the slide groove 412. The outer wall of the base 1 has a threaded hole corresponding to the connecting bolt 42. The connecting bolt 42 passes through the slide groove 412 and is threadedly connected to the base 1. The annular clamping block 44 clamps the vertical plate 41 against the base 1. When the annular clamping block 44 does not clamp the vertical plate 41 against the base 1, the vertical plate 41 can slide up and down along the rod of the connecting bolt 42, which facilitates the adjustment of the position of the micrometer head 43. After the adjustment is completed, the connecting bolt 42 is rotated, and the annular clamping block 44 clamps the vertical plate 41 against the base 1. At this time, the position of the micrometer head 43 is fixed.

[0033] In use, rotate connector 21 and disassemble inverted U-shaped plate 2, place the cylindrical workpiece 13 to be drilled on the V-shaped through groove 11 of base 1. The two inclined surfaces of the V-shaped through groove 11 support and limit the cylindrical workpiece 13. Then, install inverted U-shaped plate 2 on base 1 and connect and fix it to base 1 via connector 21. Rotate clamping member 22 and clamp it against the top of cylindrical workpiece 13. Its cooperation with the V-shaped through groove 11 limits and fixes the cylindrical workpiece 13. External drilling... The drill bit of the tool enters the mounting hole 23 through the drilling connector 3 and drills the cylindrical workpiece 13. The groove 12 below the V-shaped through groove 11 provides drilling space for the drill bit, thereby greatly reducing drilling error and improving drilling efficiency. When it is necessary to drill the next hole, the screwing part of the micrometer head 43 is rotated. After the screwing part is rotated to the required scale, the moving end of the micrometer head 43 can push the cylindrical workpiece 13 to move the corresponding distance, thereby accurately controlling the drilling spacing. The structure is reliable.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 clamping fixture for drilling cylindrical workpieces, characterized in that, include: The base (1) has a V-shaped through groove (11) and a groove (12) connected to each other from top to bottom on its top. The V-shaped through groove (11) is used to place a cylindrical workpiece (13). An inverted U-shaped plate (2) is provided on the top of the base (1). The side wall of the inverted U-shaped plate (2) is provided with a connector (21) that connects to the outer wall of the base (1). The top of the inverted U-shaped plate (2) is provided with a clamping member (22) that abuts against the cylindrical workpiece (13). Drilling connector (3), the drilling connector (3) is disposed on the top of the inverted U-shaped plate (2) and above the cylindrical workpiece (13), and the drilling connector (3) has a shaft hole that communicates with the V-shaped through groove (11); And a pushing mechanism (4), which is disposed at one end of the base (1), and the moving end of the pushing mechanism (4) extends into the V-shaped through groove (11) and contacts the end of the cylindrical workpiece (13).

2. The cylindrical workpiece drilling chucking tool according to claim 1, wherein The pushing mechanism (4) includes a vertical plate (41) vertically disposed at one end of the base (1), a connecting bolt (42) disposed on the vertical plate (41) and used to connect with the base (1), and a micro head (43) transversely disposed on the vertical plate (41) and extending into the V-shaped through groove (11), the moving end of the micro head (43) contacting the end of the cylindrical workpiece (13).

3. The cylindrical workpiece drilling chucking tool according to claim 2, wherein The vertical plate (41) is provided with through holes (411) and sliding grooves (412) spaced apart from top to bottom. One end of the micro head (43) passes through the through hole (411) and extends into the V-shaped through groove (11). The outer wall of the rod of the connecting bolt (42) is provided with an annular abutment block (44). The outer diameter of the annular abutment block (44) is greater than the width of the slide groove (412). The connecting bolt (42) passes through the slide groove (412) and is threadedly connected to the base (1). The annular abutment block (44) abuts the vertical plate (41) against the base (1).

4. The cylindrical workpiece drilling chucking tool according to claim 1, wherein The two end faces of the inverted U-shaped plate (2) are flush with the two end faces of the base (1).

5. The cylindrical workpiece drilling chucking tool according to any one of claims 1 to 4, characterized by, The top of the inverted U-shaped plate (2) is provided with a mounting hole (23) that corresponds to and communicates with the V-shaped through groove (11), and the drilling connector (3) is threadedly connected to the mounting hole (23).

6. The cylindrical workpiece drilling chucking tool according to claim 5, wherein Both the V-shaped through groove (11) and the groove (12) are arranged along the length direction of the base (1).

7. The cylindrical workpiece drilling chucking tool according to claim 5, wherein The base (1) has symmetrically provided limiting grooves (14) on both sides of its side walls, and the limiting grooves (14) are provided along the length of the base (1).

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