Depth control mechanism for machining mounting holes in aluminum alloy handles
By designing a depth control mechanism for machining mounting holes in aluminum alloy handles, the problem of inaccurate drilling depth in aluminum alloy handles was solved, achieving consistent hole positions and precise depth control, thus reducing the defect rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNIND CASTING (CHANGZHOU) CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-30
AI Technical Summary
The current aluminum alloy handle mounting hole machining process lacks high-precision depth control, resulting in insufficient or excessive drilling depth, which affects screw installation and damages the appearance. It mainly relies on worker experience and visual judgment, resulting in a high defect rate.
A depth control mechanism for machining mounting holes in aluminum alloy handles was designed, including a bench drill, a clamping assembly, and a depth control mechanism. Through the combination of a limiting ring, a guide rod, a insertion rod, and a locking seat, the depth of the drill bit is precisely controlled. Combined with the support and limiting functions of the clamping assembly, the consistency of the hole position and the accuracy of the depth are ensured.
It achieves precise positioning and depth control of the mounting holes for aluminum alloy handles, reducing the defect rate and avoiding difficulties in screw installation and damage to the appearance caused by improper depth.
Smart Images

Figure CN224424344U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of handle manufacturing technology, and in particular to a depth control mechanism for machining mounting holes in aluminum alloy handles. Background Technology
[0002] Aluminum alloy handles are used in many fields. They are produced by die casting and fixed to the mounting surface with screws. Generally, for aesthetic reasons, the mounting holes are made on the back of the handle. In simple production processes, these mounting holes do not need to be machined using high-precision machine tools; they are often machined using a simple bench drill.
[0003] When drilling mounting holes with a bench drill, it is necessary to control the drilling depth. Insufficient drilling depth can easily lead to screws not being able to be installed effectively, while excessive drilling can easily damage the appearance. Currently, drilling is mainly done by workers judging the drilling depth through their experience and visual inspection, which can easily lead to defective products. Therefore, an auxiliary depth control mechanism is needed to effectively judge the drilling depth. Utility Model Content
[0004] This utility model addresses the deficiencies in the prior art by providing a depth control mechanism for machining mounting holes in aluminum alloy handles.
[0005] This utility model is achieved through the following technical solution:
[0006] A depth control mechanism for machining mounting holes in aluminum alloy handles includes a bench drill, a clamping assembly, and a depth control mechanism. The bench drill includes a base, a column, a spindle box, and a drill bit. The column is fixedly mounted on the top of the base, the spindle box is fixedly mounted on the top of the column, and the drill bit is mounted on the output end of the spindle box. The depth control mechanism includes a connecting plate, a collar, a limiting ring, a guide rod, a insertion rod, and a locking seat. The collar is fixedly mounted on the end of the connecting plate, the guide rod is fixedly mounted on the top of one end of the connecting plate, the limiting ring is sleeved on the outside of the guide rod, the insertion rod is fixedly mounted on the bottom of one end of the connecting plate, and the locking seat is fixed to the surface of the insertion rod.
[0007] In a preferred embodiment of this utility model, the clamping assembly includes a sleeve, a pressure knob, a pressure block, a clamping seat, a card seat, a support seat, and a locking knob. The sleeve is sleeved on the outside of the column, the pressure knob is threaded to the outside of the sleeve, the pressure block is movably disposed at the end of the pressure knob, the clamping seat is fixedly disposed on the outside of the sleeve, the card seat is fixedly disposed at the bottom of one end of the clamping seat, the support seat is locked inside the card seat, and the locking knob is threadedly connected to the bottom of the card seat.
[0008] The clamping assembly is mainly used to position and limit the aluminum alloy handle, thereby ensuring that the installed holes are consistent.
[0009] In a preferred embodiment of this utility model, the cross-section of the insertion rod is square, the surface of the clamping seat is vertically provided with a square hole that mates with the insertion rod, and the surface of the locking seat is connected with a tensioning screw by a thread, the end of which contacts the surface of the insertion rod.
[0010] As the spindle drives the drill bit downward, the insertion rod moves down through the square hole on the surface of the clamping seat until the bottom of the locking seat contacts the upper surface of the clamping seat, thereby controlling the opening depth on the back of the handle.
[0011] In a preferred embodiment of this utility model, the limiting ring is fixedly disposed on the outside of the spindle box;
[0012] The guide rod is locked inside the limiting ring to prevent the connecting plate from shifting due to the influence of the drill bit, thus serving as a limit and guide.
[0013] In a preferred embodiment of this utility model, a toothed plate is fixedly provided on the outer side of the column, and a toothed groove that cooperates with the pressure block is provided on the outer side of the pressure block;
[0014] The outer toothed groove of the pressure block engages with the outer toothed plate surface of the column to achieve the effect of fixing the height of the clamping assembly.
[0015] In a preferred embodiment of this utility model, the top of the card holder has a card hole that mates with the support base, and the top of the locking knob contacts the bottom of the support base.
[0016] The beneficial effects of this utility model are:
[0017] This depth control mechanism for machining mounting holes in aluminum alloy handles effectively limits and supports the handle when drilling mounting holes on the back of the aluminum alloy handle using a bench drill, ensuring accurate and uniform hole positioning. The depth control mechanism adjusts the position of the locking seat according to the drill bit length and drilling depth, machining until the locking seat contacts the surface of the clamping seat, thereby ensuring the machining depth of the mounting hole. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the depth control mechanism for machining the mounting hole of the aluminum alloy handle according to this utility model.
[0019] Figure 2 This is a schematic diagram of the clamping assembly structure of the depth control mechanism for machining the mounting hole of the aluminum alloy handle according to this utility model.
[0020] Figure 3 This is a side view of the clamping assembly of the depth control mechanism for machining the mounting hole of the aluminum alloy handle according to this utility model.
[0021] Figure 4 This is a schematic diagram of the installation structure of the depth control mechanism for machining the mounting hole of the aluminum alloy handle according to this utility model.
[0022] In the diagram: 1. Bench drill; 11. Base; 12. Column; 13. Spindle box; 14. Drill bit; 2. Clamping assembly; 21. Casing; 22. Pressure knob; 23. Pressure block; 24. Clamping seat; 25. Clamping seat; 26. Support seat; 27. Locking knob; 3. Depth control mechanism; 31. Connecting plate; 32. Collar; 33. Limiting ring; 34. Guide rod; 35. Insertion rod; 36. Locking seat. Detailed Implementation
[0023] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.
[0024] like Figure 1-4 The diagram shows a depth control mechanism for machining mounting holes in aluminum alloy handles, comprising a bench drill 1, a clamping assembly 2, and a depth control mechanism 3. The bench drill 1 includes a base 11, a column 12, a spindle box 13, and a drill bit 14. The column 12 is fixedly mounted on the top of the base 11, the spindle box 13 is fixedly mounted on the top of the column 12, and the drill bit 14 is mounted on the output end of the spindle box 13. The depth control mechanism 3 includes a connecting plate 31, a collar 32, a limiting ring 33, a guide rod 34, a insertion rod 35, and a locking seat 36. The collar 32 is fixedly mounted on the end of the connecting plate 31, the guide rod 34 is fixedly mounted on the top of one end of the connecting plate 31, the limiting ring 33 is sleeved on the outside of the guide rod 34, the insertion rod 35 is fixedly mounted on the bottom of one end of the connecting plate 31, and the locking seat 36 is fixed to the surface of the insertion rod 35.
[0025] Specifically, the clamping assembly 2 includes a sleeve 21, a pressure knob 22, a pressure block 23, a clamping seat 24, a retaining seat 25, a support seat 26, and a locking knob 27. The sleeve 21 is sleeved on the outside of the column 12. The pressure knob 22 is threaded to the outside of the sleeve 21. The pressure block 23 is movably disposed at the end of the pressure knob 22. The clamping seat 24 is fixedly disposed on the outside of the sleeve 21. The retaining seat 25 is fixedly disposed at the bottom of one end of the clamping seat 24. The support seat 26 is engaged inside the retaining seat 25. The locking knob 27 is engaged with the bottom of the retaining seat 25. The components are connected by threads. The cross-section of the insertion rod 35 is square. The surface of the clamping seat 24 has a square hole that mates with the insertion rod 35. The surface of the locking seat 36 is connected by threads with a tensioning screw, the end of which contacts the surface of the insertion rod 35. The limiting ring 33 is fixedly installed on the outside of the spindle box 13. A toothed plate is fixedly installed on the outside of the column 12. The outside of the pressure block 23 has a toothed groove that mates with it. The top of the card seat 25 has a card hole that mates with the support seat 26. The top of the locking knob 27 contacts the bottom of the support seat 26.
[0026] In this embodiment, the height of the clamping assembly 2 is first adjusted according to the handle size. The pressure knob 22 is rotated to separate the outer tooth groove of the pressure block 23 from the outer tooth plate of the column 12, so that the height of the clamping assembly 2 can be adjusted up and down. Then, the pressure knob 22 is tightened to make the outer tooth groove of the pressure block 23 engage with the outer tooth plate of the column 12 to achieve a fixing effect. Then, the position of the support seat 26 is adjusted. The position of the support seat 26 can be adjusted within the card seat 25 by loosening the locking knob 27. The locking knob 27 is tightened to fix the support seat 26. Since the handle is long, when clamping at the limit position, the lack of effective support at one end can easily cause one end to tilt up, affecting the progress of the hole. Therefore, auxiliary support is required at the end.
[0027] Furthermore, based on the length of the drill bit 14 and the fixed height of the clamping assembly 2, the locking seat 36 is adjusted. After loosening the tension screw on the surface of the locking seat 36, the height of the locking seat 36 can be adjusted up and down on the surface of the insertion rod 35. During processing, the output shaft of the spindle box 13 is started, controlling the drill bit 14 to rotate rapidly. The connecting plate 31 is connected to the end of the drill bit 14 through the collar 32 at its end via a bearing, controlling the drill bit 14 to move down and perform hole processing on the back of the handle that is locked in the clamping seat 24 until the bottom of the locking seat 36 contacts the surface of the clamping seat 24, thereby achieving effective control of the processing depth. The guide rod 34 at the top of one end of the connecting plate 31 is locked in the outer limiting ring 33 of the spindle box 13 to ensure that the connecting plate 31 will not deviate with the rotation of the spindle and to ensure that the insertion rod 35 moves vertically.
[0028] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.
[0029] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A depth control mechanism for machining mounting holes in aluminum alloy handles, comprising a bench drill (1), a clamping assembly (2), and a depth control mechanism (3), characterized in that: The bench drill (1) includes a base (11), a column (12), a spindle box (13), and a drill bit (14). The column (12) is fixedly installed on the top of the base (11), the spindle box (13) is fixedly installed on the top of the column (12), and the drill bit (14) is installed at the output end of the spindle box (13). The depth control mechanism (3) includes a connecting plate (31), a collar (32), a limiting ring (33), a guide rod (34), a plug rod (35), and a locking seat (36). The collar (32) is fixedly disposed at the end of the connecting plate (31). The guide rod (34) is fixedly disposed at the top of one end of the connecting plate (31). The limiting ring (33) is sleeved on the outside of the guide rod (34). The plug rod (35) is fixedly disposed at the bottom of one end of the connecting plate (31). The locking seat (36) is fixed to the surface of the plug rod (35).
2. The depth control mechanism for machining mounting holes in aluminum alloy handles according to claim 1, characterized in that: The clamping assembly (2) includes a sleeve (21), a pressure knob (22), a pressure block (23), a clamping seat (24), a card seat (25), a support seat (26), and a locking knob (27). The sleeve (21) is sleeved on the outside of the column (12). The pressure knob (22) is threaded to the outside of the sleeve (21). The pressure block (23) is movably disposed at the end of the pressure knob (22). The clamping seat (24) is fixedly disposed on the outside of the sleeve (21). The card seat (25) is fixedly disposed at the bottom of one end of the clamping seat (24). The support seat (26) is locked inside the card seat (25). The locking knob (27) is threadedly connected to the bottom of the card seat (25).
3. The depth control mechanism for machining mounting holes in aluminum alloy handles according to claim 2, characterized in that: The insertion rod (35) has a square cross-section. The mounting base (24) has a square hole that mates with the insertion rod (35) on its surface. The locking base (36) has a tensioning screw connected to its surface by a thread, and its end contacts the surface of the insertion rod (35).
4. The depth control mechanism for machining mounting holes in aluminum alloy handles according to claim 1, characterized in that: The limiting ring (33) is fixedly installed on the outside of the spindle box (13).
5. The depth control mechanism for machining mounting holes in aluminum alloy handles according to claim 2, characterized in that: A toothed plate is fixedly installed on the outside of the column (12), and a toothed groove that matches the pressure block (23) is opened on the outside of the column (12).
6. The depth control mechanism for machining mounting holes in aluminum alloy handles according to claim 2, characterized in that: The top of the card holder (25) is provided with a card hole that mates with the support base (26), and the top of the locking knob (27) contacts the bottom of the support base (26).