workpiece sidewall drilling fixture

Abstract

This utility model relates to the field of tooling and fixture technology, and discloses a tooling for drilling holes in the side wall of a workpiece. It includes a bench drill press, and further includes: an extension plate, horizontally arranged, one end of which is detachably fixed to the spindle mounting bracket of the bench drill press, and the other end movably fixed to a vertically arranged machining shaft; a belt, one end of which is sleeved on the spindle of the bench drill press, and the other end of which is sleeved on the machining shaft; and a clamping mechanism, located below the machining shaft, used to limit the workpiece to be processed, so that the machining shaft can drill holes in the side wall of the workpiece under the rotation of the spindle and the drive of the belt. The tooling has a simple structure, is easy to operate, and can drill holes in the side walls of small parts.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and more specifically, to a tooling for drilling holes in the side wall of a workpiece. Background Technology

[0002] Typically, drilling machines are used to machine small-diameter holes in workpieces. Benchtop drilling machines are a type of small drilling machine with a vertically arranged spindle. Benchtop drilling machines generally drill holes with a diameter of less than 13 mm, and usually not exceeding 25 mm, making them particularly suitable for machining small holes. Benchtop drilling machines use a vertical movement for drilling, while the spindle's machining position is fixed, with the drilling position located below the drill bit mounted on the spindle.

[0003] Machining sidewall holes on the inner walls of some concave workpieces has always been a challenge in the industry. This is because the sidewalls of the workpiece are difficult to position, and the inner sidewalls are not exposed surfaces, which can easily obstruct or interfere with the extension and retraction of the drill bit. Consequently, the movement of the workpiece to be machined is restricted, making it difficult to drill sidewall holes according to the corresponding positions on the inner sidewalls of the workpiece. Therefore, how to perform batch machining of sidewall holes is an urgent problem that the industry needs to solve. Utility Model Content

[0004] The technical problem to be solved by this invention is that there is no equipment in the prior art that is particularly suitable for drilling holes in the side walls of workpieces. In order to overcome the above-mentioned defects of the prior art, this invention provides a workpiece side wall drilling fixture.

[0005] A tooling for drilling holes in the sidewall of a workpiece, including a bench drill, and further comprising:

[0006] The extension plate is horizontally set, with one end detachably fixed to the spindle mounting bracket of the bench drill, and the other end movably fixed to a vertically arranged machining axis.

[0007] The belt is fitted at one end onto the spindle of the bench drill and at the other end onto the machining shaft.

[0008] The clamping mechanism, at least partially located below the machining axis, is used to limit the workpiece to be processed, so that the machining axis can drill holes in the side wall of the workpiece under the rotation of the spindle and the drive of the belt.

[0009] In the above-described solution, the tooling of this application is an improvement on a bench drill press. Since the extension plate is fixed to the spindle of the bench drill press, the operating handle controlling the up-and-down movement of the spindle on the bench drill press can also control the up-and-down movement of the extension plate, thereby controlling the up-and-down movement of the machining axis. A belt connects the spindle and the machining axis. The rotation of the spindle causes the belt to rotate, which in turn drives the machining axis to rotate. Thus, the up-and-down movement of the machining axis, combined with its rotation, can drill holes in the sidewall of the workpiece to be processed, which is confined below the machining axis. Because the bench drill press itself is small, the machining axis combined with the extension plate is also relatively small, making it easy for the entire machining axis to extend into the workpiece to drill holes in the sidewall. One end of the extension plate is detachably fixed to the spindle mounting bracket, allowing the position of the extension plate relative to the bench drill press to be changed at any time according to the shape of the workpiece, facilitating the processing of different workpieces.

[0010] In one possible implementation, a drill jig is also provided below the machining shaft, with one end of the drill jig extending below the machining shaft suspended and having a limiting hole, and the drill bit of the machining shaft passing through the limiting hole of the drill jig.

[0011] In the above scheme, the drilling jig is set to limit the drill bit of the machining axis. The limiting hole of the drilling jig and one end of the extension plate are aligned to limit the machining axis, ensuring that the drill bit of the machining axis always works vertically and drills holes in the side wall of the workpiece without deviation.

[0012] In one possible implementation, the drill jig is an L-shaped block, and a fixed base is provided on the base of the bench drill. One end of the L-shaped block is fixed to the fixed base by screws, so that the other end of the L-shaped block is suspended below the machining axis, and the limiting hole is provided on the suspended end.

[0013] In the above design, the L-shaped block is positioned below the machining axis and is suspended in mid-air. This suspended space is perfectly suited for the side wall of the workpiece to be machined, facilitating the machining of the side wall hole. The L-shaped block structure is simple and ingeniously designed.

[0014] In one possible implementation, the extension plate has a fixing hole at one end that is fixed to the spindle mounting bracket, and the extension plate has a cut surface with a fixing hole on the outer side wall. After the extension plate is inserted into the spindle mounting bracket through the fixing hole, the two sides of the cut surface of the extension plate are fastened and fixed by bolts.

[0015] In the above solution, the extension plate is fixed to the spindle mounting bracket through the fixing holes, and then the two halves of the extension plate that have been cut off are fastened and fixed by bolts. This detachable installation method is simple and feasible, without adding too many connecting structures, and is very friendly to the miniaturization of the entire tooling.

[0016] In one possible implementation, the clamping mechanism includes a vertical baffle disposed on the side of the machining shaft near the spindle, and a telescopic cylinder disposed on the side of the machining shaft away from the spindle. A clamping rod is connected to the telescopic rod of the telescopic cylinder, and the extension and retraction of the telescopic rod can control the clamping rod to be pressed against the workpiece.

[0017] In the above scheme, the clamping mechanism is set up to position the workpiece so that the machining shaft can drill holes in its side wall. The vertical baffle is set up to position the front end of the workpiece, and the clamping rod connected to the telescopic cylinder is set up to position the rear end of the workpiece. Because the telescopic rod is telescopic, it can be adapted to limit and fix workpieces of different thicknesses.

[0018] In one possible implementation, at least two vertical baffles are provided on the side of the machining shaft closer to the main shaft, and at least two telescopic cylinders are provided on the side of the machining shaft away from the main shaft.

[0019] Furthermore, both the vertical baffle and the telescopic cylinder are provided in two symmetrical configurations with the cut surface of the extension plate as the plane of symmetry.

[0020] In the above scheme, the two vertical baffles symmetrically arranged on the cutting surface and the telescopic rods of the two telescopic cylinders together can fix the workpiece at four points. Such multi-point fixation can fix the workpiece more firmly and avoid the occurrence of the hole being drilled crookedly due to the workpiece shaking during drilling.

[0021] In one possible implementation, the telescopic rod of the telescopic cylinder is connected to the clamping rod via a connecting arm. The telescopic rod of the telescopic cylinder extends in a direction away from the machining axis, with one end of the extended rod fixed to one end of the connecting arm and the other end of the connecting arm fixed to the clamping rod. The telescopic rod extends and retracts, causing the free end of the clamping rod to fit tightly against the workpiece.

[0022] In the above scheme, the connecting arm and the telescopic rod can be fixed by screws or welding, preferably by screws, and are detachable. The connecting arm and the clamping rod can be fixed by screws, threads, or welding, preferably by threads, and are detachable.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. The workpiece sidewall drilling fixture of this utility model is based on a bench drill, with the addition of a machining shaft, belt, extension plate and limit assembly, etc. It does not make major improvements to the existing drill, nor does it change the operation and control of the existing drill. It has a simple structure and is easy to operate.

[0025] 2. In the workpiece sidewall drilling fixture of this utility model, the orientation of the free end of the extension plate can be changed by using the detachable fixing of the extension plate on the spindle fixing frame, which can well match the sidewall drilling operation of different shaped workpieces.

[0026] 3. The workpiece sidewall drilling fixture of this utility model uses a fixed vertical baffle and a movable telescopic cylinder telescopic rod to limit and fix the workpiece to be processed. The structure is simple and the control is convenient. Attached Figure Description

[0027] Figure 1 This utility model provides an overall structural diagram of the workpiece sidewall drilling fixture with the workpiece to be processed mounted on it.

[0028] Figure 2 This is an overall structural diagram of the workpiece to be processed without the workpiece having the tool for drilling holes in the side wall of the workpiece of this utility model installed;

[0029] Figure 3 This is a structural diagram of the improved part of the workpiece sidewall drilling fixture of this utility model;

[0030] Figure 4 An exploded view of the improved part of the workpiece sidewall drilling fixture of this utility model;

[0031] Figure 5 This is a structural diagram of the drilling jig for the workpiece sidewall drilling tool of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Benchtop drilling machine; 2. Spindle; 3. Spindle holder; 4. Motor; 5. Operating handle; 6. Base plate; 7. Fixing seat; 8. Drill jig; 9. Telescopic cylinder; 10. Vertical baffle; 11. Telescopic rod; 12. Extension plate; 13. Belt; 14. Machining shaft; 15. Cap screw; 16. Fixing hole; 17. Limiting hole; 18. Cutting surface; 19. Bolt; 20. Through hole; 21. Workpiece to be machined; 22. Connecting arm; 23. Clamping rod. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described in detail below. It should be noted that the following embodiments are only used to illustrate the implementation methods and typical parameters of the present invention, and are not intended to limit the parameter range described in the present invention. Reasonable variations derived therefrom are still within the protection scope of the claims of the present invention.

[0035] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] See Figures 1-4 As shown in the figure, this application discloses a workpiece sidewall drilling fixture, which consists of a bench drill 1, an extension plate 12, a belt 13, a machining shaft 14, and a clamping mechanism.

[0038] See Figure 1 , Figure 2 The bench drill 1 includes a spindle 2 mounting bracket 3, on which the spindle 2 is vertically mounted. A motor 4 is mounted on the bench drill 1 to drive the spindle 2 to rotate. An operating handle 5 is also mounted on the spindle mounting bracket 3 to drive the spindle 2 to move up and down. These components of the bench drill 1 are common to all existing bench drill 1 models and can be used in all existing bench drill 1 models. Since they are not the focus of this application, they are only briefly described here.

[0039] See Figure 3 The core components of the workpiece sidewall drilling fixture in this embodiment are an extension plate 12, a belt 13, a machining shaft 14, and a clamping mechanism. One end of the extension plate 12 is fixed to the spindle mounting bracket 3, and the other end is a free end, on which the machining shaft 14 is movably fixed. The extension plate 12 supports the machining shaft 14, and is also detachably fixed to the spindle mounting bracket 3, serving as an important pivot for adjusting the position of the machining shaft 14. Specifically, the end of the extension plate 12 fixed to the spindle mounting bracket 3 has a fixing hole 16, and a cutting surface 18 is provided on the outer side of the end fixed to the spindle mounting bracket 3, extending inward to the fixing hole 16, cutting the end into two halves. After the extension plate 12 passes through the fixing hole 16 onto the spindle mounting bracket 3, the two halves of the extension plate 12 are fastened and fixed by bolts 19.

[0040] Please continue reading Figure 3 In order for the spindle 2 to rotate and drive the machining shaft 14 to rotate, the machining shaft 14 is movably fixed at the free end of the extension plate 12, and the machining shaft 14 and the spindle 2 are also rotated and engaged by the belt 13.

[0041] See Figures 2-4 In this embodiment, a workpiece sidewall drilling fixture is used where the workpiece 21 is not manually held during drilling. Instead, a clamping mechanism is provided to limit and fix the workpiece 21. This structure provides better consistency in support than manual support. The clamping mechanism specifically includes a set of vertical baffles 10 and a set of telescopic cylinders 9. The telescopic rod 11 of the telescopic cylinder 9 is connected to a clamping rod 23. The clamping rod 23 is arranged opposite to the vertical baffles 10 to limit the workpiece 21 in the middle.

[0042] See Figure 4 To facilitate better drilling and control the accuracy of drilling, a drill jig 8 is provided below the machining shaft 14. One end of the drill jig 8 extends below the machining shaft 14 and is suspended, passing through a limiting hole 17. The drill bit of the machining shaft 14 passes through the limiting hole 17 of the drill jig 8. The machining shaft 14 passes through the limiting hole 17 of the drill jig 8 before drilling the workpiece 21, which can prevent the drill bit from shaking, making the drilling position more accurate and the drilling precision higher.

[0043] The following is a preferred embodiment of this application, which is used to specifically illustrate the inventive concept of this application. Example

[0044] See Figures 2-4 In a preferred embodiment, a workpiece sidewall drilling fixture includes a bench drill 1, and further includes:

[0045] An extension plate 12 is horizontally positioned, with one end detachably fixed to the spindle mounting bracket 3 of the bench drill 1, and the other end movably fixed to a vertically arranged machining shaft 14. A belt 13 is fitted at one end onto the spindle 2 of the bench drill 1, and at the other end onto the machining shaft 14. A clamping mechanism is located below the machining shaft 14 to limit the workpiece to be processed, allowing the machining shaft 14 to drill holes in the side wall of the workpiece under the rotation of the spindle 2 and the drive of the belt 13. The movable fixation of the machining shaft 14 on the extension plate 12 can be achieved by providing a through hole 20 at the free end of the extension plate 12. The top of the machining shaft 14 extends into the through hole 20 and is then restricted and fixed by a cap screw 15, allowing the top of the machining shaft 14 to rotate within the through hole 20 without sliding up and down.

[0046] Specifically, the extension plate 12 is detachably fixed to the spindle mounting bracket 3 by having a fixing hole 16 at one end of the extension plate 12 fixed to the spindle mounting bracket 3, and a cutting surface 18 is provided from the outside of this end into the fixing hole 16, cutting this end into two halves. After the extension plate 12 is inserted into the spindle mounting bracket 3 through the fixing hole 16, the two halves of the extension plate 12 are fastened and fixed by bolts 19. This structure is simple to assemble, easy to operate, and allows for easy replacement of the fixing position of the extension plate 12.

[0047] Specifically, the machining shaft 14 is fixed to move at the other end of the extension plate 12 by providing a through hole 20 at the other end of the extension plate 12. After the top of the machining shaft 14 passes through the through hole 20, a cap screw 15 is screwed in. The cap size of the cap screw 15 is larger than the diameter of the through hole 20, so that the top of the machining shaft 14 can move within the through hole 20, while the presence of the cap will prevent it from falling off.

[0048] The clamping mechanism specifically includes a pair of vertical baffles 10 disposed on the side of the machining shaft 14 near the spindle 2, and a pair of telescopic cylinders 9 disposed on the side of the machining shaft 14 away from the spindle 2. The telescopic rods 11 of the telescopic cylinders 9 are connected to connecting arms 22, which in turn are connected to clamping rods 23. The clamping rods 23 are positioned facing the side of the vertical baffles 10 that faces the workpiece to be processed. (See also...) Figure 3 and Figure 4 A fixed base 7 is fixed on the base plate of the bench drill 1. A telescopic cylinder 9 is fixed on the fixed base 7. The telescopic rod 11, connecting arm 22, and connecting rod 23 of the telescopic cylinder 9 form a U-shaped structure. The free end of the clamping rod 23 faces the side of the vertical baffle 10 facing the workpiece 21 to be processed. That is, the free end of the clamping rod 23 is set facing the vertical baffle 10, clamping the workpiece 21 in the middle for limitation. The two telescopic cylinders 9 are arranged symmetrically with respect to the cut surface 18 of the extension plate 12. The pair of vertical baffles 10 are also arranged symmetrically with respect to the cut surface 18 of the extension plate 12 on the fixed base 7. In this way, the vertical baffles 10 and the clamping rod 23 can apply balanced force to clamp the workpiece 21 to be processed.

[0049] To better control the drilling accuracy, a drill jig 8 is also provided below the machining shaft 14. One end of the drill jig 8 extending below the machining shaft 14 is suspended and passes through a limiting hole 17. The drill bit of the machining shaft 14 passes through the limiting hole 17 of the drill jig 8. The suspended end of the drill jig 8 below the machining shaft 14 allows the sidewall of the workpiece 21 to be drilled to be positioned below the suspended end of the drill jig 8, enabling the machining shaft 14 to pass through the limiting hole 17 and drill the sidewall. (See also...) Figure 5 The drill jig 8 is an L-shaped block. A fixed seat 7 is provided on the base plate 6 of the bench drill 1. One end of the L-shaped block is fixed to the fixed seat 7 by screws, so that the other end of the L-shaped block is suspended below the machining axis 14, and the limiting hole 17 is provided on the suspended end.

[0050] In summary, the working principle of the workpiece sidewall drilling fixture in the above embodiment is as follows: At the initial stage of processing, the fixing hole 16 end of the extension plate 12 is detachably fixed and adjusted so that the free end of the extension plate 12 can extend into the workpiece 21 to be processed. Then, the workpiece 21 to be processed is limited between the clamping rod 23 of the telescopic cylinder 9 and the vertical baffle 10, and the sidewall to be processed of the workpiece 21 is inserted below the limiting hole 17 at the suspended end of the drill jig 8. The processing shaft 14 passes through the limiting hole 17 and abuts against the sidewall of the workpiece 21 to be processed. Then, the motor 4 of the bench drill 1 is turned on, the spindle 2 rotates and drives the processing shaft 14 to rotate. Then, the operating handle 5 of the bench drill 1 is moved to control the spindle 2 to move up and down, driving the processing shaft 14 to move up and down to drill holes in the sidewall.

[0051] Due to the presence of the limiting hole 17 and the clamping mechanism, the workpiece sidewall drilling fixture in this embodiment has high machining accuracy.

[0052] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A workpiece sidewall piercing tool comprising a bench drill (1), characterized in that, Also includes: Extension plate (12) is horizontally set, one end of which is detachably fixed on the spindle fixing frame (3) of the bench drill (1), and the other end is movably fixed with a vertically arranged machining shaft (14). A belt (13) is fitted at one end onto the spindle (2) of a bench drill (1) and at the other end onto a machining shaft (14); The clamping mechanism is at least partially located below the machining shaft (14) and is used to clamp the workpiece (21) to be processed, so that the machining shaft (14) can drill holes in the side wall of the workpiece (21) under the rotation of the spindle (2) and the drive of the belt (13).

2. The workpiece sidewall drilling fixture according to claim 1, characterized in that, A drill jig (8) is also provided below the machining shaft (14). The end of the drill jig (8) extending below the machining shaft (14) is suspended and has a limiting hole (17) through it. The drill bit of the machining shaft (14) can be inserted into the limiting hole (17) of the drill jig (8).

3. The workpiece sidewall drilling fixture according to claim 2, characterized in that, The drill jig (8) is an L-shaped block. A fixed seat (7) is provided on the base plate (6) of the bench drill (1). One end of the L-shaped block is fixed to the fixed seat (7) by screws, so that the other end of the L-shaped block is suspended below the machining shaft (14), and the limiting hole (17) is provided on the suspended end.

4. The workpiece sidewall drilling fixture according to claim 1, characterized in that, The extension plate (12) is fixed to the spindle fixing frame (3) at one end with a fixing hole (16). The extension plate (12) has a cut surface (18) with the fixing hole (16) on the outer side wall. After the extension plate (12) is inserted into the spindle fixing frame (3) through the fixing hole (16), the two sides of the cut surface (18) of the extension plate (12) are fastened and fixed by bolts (19).

5. The workpiece sidewall drilling fixture according to claim 4, characterized in that, The clamping mechanism includes a vertical baffle (10) disposed on the side of the machining shaft (14) near the main shaft (2) and a telescopic cylinder (9) disposed on the side of the machining shaft (14) away from the main shaft (2). A clamping rod (23) is connected to the telescopic rod (11) of the telescopic cylinder (9). The telescopic rod can control the clamping rod (23) to be close to the workpiece (21).

6. The workpiece sidewall drilling fixture according to claim 5, characterized in that, At least two vertical baffles (10) are provided on the side of the machining shaft (14) close to the main shaft (2), and at least two telescopic cylinders (9) are provided on the side of the machining shaft (14) away from the main shaft (2).

7. The workpiece sidewall drilling fixture according to claim 6, characterized in that, Both the vertical baffle (10) and the telescopic cylinder (9) are provided in two symmetrical configurations with the cut surface (18) of the extension plate (12) as the symmetrical plane.

8. The workpiece sidewall drilling fixture according to claim 7, characterized in that, The telescopic rod (11) of the telescopic cylinder (9) is connected to the clamping rod (23) via a connecting arm (22). The telescopic rod (11) of the telescopic cylinder (9) extends in a direction away from the processing axis (14). One end of the extension is fixed to one end of the connecting arm (22), and the other end of the connecting arm (22) is fixed to the clamping rod (23). The telescopic rod (11) extends and retracts, causing the free end of the clamping rod (23) to be able to fit tightly against the workpiece (21) to be processed.

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