Clarinet key shaft column tapping machine

Abstract

The utility model relates to a clarinet key shaft column trepanning and tapping machine. The tapping machine solves the technical problem that an existing tapping machine is unreasonable in design. The clarinet key shaft column trepanning and tapping machine comprises a machine table. The positioning seat is arranged on the machine table, at least two positioning blocks protruding outwards are arranged on one side of the positioning seat at intervals, and a concave positioning groove is formed in one side of each positioning block; the clamping assembly comprises a driving air cylinder arranged on the positioning base, a sliding block driven by the driving air cylinder and capable of axially moving towards one side of the positioning block, clamping blocks arranged on the sliding block at intervals and protruding outwards, and clamping grooves formed in the sides, close to the positioning block, of the clamping blocks and corresponding to the positioning grooves. According to the clarinet key shaft column trepanning and tapping machine, the tapping working efficiency is improved, meanwhile, the clamping assembly and the tapping assembly are easy and convenient to operate, the clamping stability is high, and the tapping precision is improved.

Description

Technical Field

[0001] The utility model belongs to the field of key shaft tapping and relates to a clarinet key shaft hole opening and tapping machine. Background Art

[0002] For example, a Chinese patent document discloses a black tube key shaft column perforation and tapping mechanism [202221982554.2]. This black tube key shaft column perforation and tapping mechanism includes a mounting base; a movable platform, which is slidably connected to the upper end of the mounting base along the length direction of the mounting base; positioning blocks, which are spaced apart at both ends of the length direction of the movable platform, and the positioning blocks are provided with positioning grooves; a clamping rod, with both ends limited in the positioning grooves, and two spaced-apart clamping blocks are slidably connected to the clamping rod and the clamping blocks are provided with a through hole; a drilling device, which is arranged on the mounting base and is located on one side of the movable platform.

[0003] The drawbacks of the above technical solution are that a large amount of manual operation is still required during the clamping process, and the accuracy of punching and tapping and the stability of the fixture still need to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a clarinet key shaft hole tapping machine in view of the above problems existing in the prior art.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A clarinet key shaft hole tapping machine includes a machine platform;

[0007] A positioning seat is provided on the machine platform, wherein at least two positioning blocks protruding outward are provided at intervals on one side of the positioning seat, and a concave positioning groove is provided on one side of the positioning block;

[0008] A clamping assembly includes a driving cylinder disposed on the positioning seat, a sliding block driven by the driving cylinder and capable of axially moving toward one side of the positioning block, a clamping block spaced apart from the sliding block and protruding outward, and a clamping groove disposed on a side of the clamping block close to the positioning block and corresponding to the positioning groove, the clamping groove and the positioning groove being coaxially disposed and both having a tapped clearance hole penetrating the axis;

[0009] The tapping assembly has two groups and is respectively arranged on both sides of the positioning seat. The tapping assembly drives a tapping head which axially passes through the tapping clearance hole.

[0010] Furthermore, the clamping groove and the positioning groove are both arc-shaped grooves, and the inner walls of the clamping groove and the positioning groove are both provided with mounting notches.

[0011] Furthermore, a protruding buffer pad is provided in the installation notch.

[0012] Furthermore, the cross section of the positioning block is arc-shaped, and a clearance notch for the sliding block to pass through is provided on one side of the lower end of the positioning block close to the positioning seat.

[0013] Furthermore, the upper end of the clamping block is provided with an arc-shaped surface facing outward and downward.

[0014] Furthermore, a tapping stabilizing block capable of abutting against the upper end of the arc surface is provided on one side of the positioning seat.

[0015] Furthermore, one end of the positioning block close to the positioning seat is provided with a mounting plate that fits on the surface of the positioning seat.

[0016] Furthermore, circumferential stabilizing blocks are provided at intervals on the positioning seat to abut against the circumference of the mounting plate.

[0017] Furthermore, a tapping protection sleeve is provided at one end of the clamping block away from the positioning block, the tapping protection sleeve is communicated with the clamping groove, and part of the tapping head is always located in the tapping protection sleeve.

[0018] Compared with the existing technology, this clarinet key shaft hole drilling and tapping machine realizes a semi-automatic clamping and tapping method of the key shaft, which improves the tapping work efficiency. At the same time, the clamping component and the tapping component are easy to operate, the clamping stability is high, and the tapping accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of a clarinet key shaft hole tapping machine.

[0020] Figure 2 for Figure 1 Schematic diagram of the positioning block of the clarinet key shaft drilling and tapping machine.

[0021] Figure 3 for Figure 1 Schematic diagram of the clamping assembly of the clarinet key shaft drilling and tapping machine.

[0022] In the figure, 10, machine table; 20, positioning seat; 21, positioning block; 22, positioning groove; 30, clamping assembly; 31, driving cylinder; 32, sliding block; 33, clamping block; 331, mounting notch; 332, buffer pad; 333, clearance notch; 334, arcuate surface; 34, clamping groove; 35, tapping clearance hole; 36, mounting plate; 37, circumferential stabilizing block; 40, tapping assembly; 41, tapping head; 42, tapping stabilizing block; 43, tapping protection sleeve. DETAILED DESCRIPTION Example 1

[0023] See also Figures 1 to 3, which is a schematic diagram of a clarinet key shaft tapping machine provided by the present invention. The clarinet key shaft tapping machine includes a machine base 10; a positioning seat 20 spaced apart from the machine base 10, a clamping assembly 30, a tapping assembly 40, etc. It is conceivable that the clarinet key shaft tapping machine also includes other functional components and specific structures, such as electrical connection components, control components, and mounting structures. These are all well known to those skilled in the art and will not be described in detail here.

[0024] Two key shafts form a set and are used as an articulated bracket for clarinet keys. The specific structure consists of a column connected to the clarinet and a spherical part set at the end of the column away from the clarinet. This clarinet key shaft hole opening and tapping machine is used to perform hole expansion and tapping operations in the spherical part.

[0025] The machine 10 is an equipment platform, and the height of the upper mounting surface from the ground is usually suitable for ergonomics, so as to facilitate material placement and operation.

[0026] See also Figure 2 The positioning seat 20 serves as a mounting carrier, facilitating the assembly and installation of various components. In this embodiment, the main components are all mounted on the side walls of the positioning seat 20. At least two outwardly protruding positioning blocks 21 are spaced apart on one side of the positioning seat 20. In this embodiment, the positioning blocks 21 have an arcuate cross-section and serve as an extension of the positioning seat 20. A recessed positioning groove 22 is provided on the side wall of the positioning block 21 away from the positioning seat 20. The positioning groove 22 is used to fit the portion of the key shaft column to be tapped. The positioning block 21 positions the key shaft column away from the key shaft column, preventing interference between the clamping assembly 30 and the tapping assembly 40 and the positioning seat 20 during operation.

[0027] It is conceivable that in this embodiment, the positioning block 21 and the positioning seat 20 are detachably connected by bolt fastening. Specifically, a mounting plate 36 is provided at one end of the positioning block 21 near the positioning seat 20, which fits against the surface of the positioning seat 20. The mounting plate 36 increases the connection area between the positioning block 21 and the positioning seat 20 and improves the flatness of the fit, thereby stabilizing the structure and ensuring balanced force. More optimally, circumferential stabilizing blocks 37 are provided at intervals on the positioning seat 20 to abut against the circumference of the mounting plate 36. The circumferential stabilizing blocks 37 are used to ensure the installation position of the mounting plate 36 and to buffer positional deviation caused by vibration.

[0028] See also Figure 3The clamping assembly 30 includes a drive cylinder 31 mounted on the positioning seat 20. The output end of the drive cylinder 31 is a push rod. A sliding block 32 driven by the drive cylinder 31 is connected to the output end of the drive cylinder 31. The sliding block 32 is driven by the drive cylinder 31 and can move axially toward the positioning block 21. The sliding block 32 is affixed to the positioning seat 20, or a guide rail is provided on the positioning seat 20 to cooperate with the sliding block 32. In this embodiment, since two key shafts are grouped together, the clamping assembly 30 is required to clamp and position the two key shafts. The clamping blocks 33 can be arranged on the two sliding blocks 32 at intervals on a single sliding block 32 and protrude outward. Each clamping block 33 corresponds to the adjacent positioning block 21. A clamping groove 34 corresponding to the positioning groove 22 is provided on the side of the clamping block 33 close to the positioning block 21. The clamping groove 34 is used for clamping and positioning the other side of the key shaft column. When the clamping block 33 slides close to the positioning block 21, the spherical part of the key shaft column to be tapped is clamped between the positioning groove 22 and the clamping groove 34. Optimally, the clamping groove 34 and the positioning groove 22 are both arc-shaped grooves, and the design of the arc-shaped grooves fits the spherical outer wall of the key shaft column more closely, and installation notches 331 are provided on the inner walls of the clamping groove 34 and the positioning groove 22. The installation notches 331 provide clamping space margin and installation space margin, and a protruding buffer pad 332 can be provided in the installation notch 331. The buffer pad 332 can convert the hard clamping into a soft clamping method, and can eliminate the clamping scratch problem caused by tapping vibration.

[0029] A clearance notch 333 is provided at the lower end of the positioning block 21, near the positioning seat 20, for the sliding block 32 to pass through. This clearance notch 333 ensures that the sliding block 32 can drive two clamping blocks 33 on the same side, making the overall installation structure more compact and reliable. The clamping groove 34 and the positioning groove 22 are coaxially arranged, and both are provided with a tapped clearance hole 35 extending through the axis. This clearance hole 35 ensures that the tapping assembly 40 can fully pass through the key shaft column, ensuring sufficient and complete tapping.

[0030] In other embodiments, a symmetrical clamping assembly 30 may also be used, that is, two driving cylinders 31 are used to drive two sliding blocks 32 to slide towards each other, so as to achieve the purpose of the clamping block 33 cooperating with the positioning block 21 to clamp the key shaft column.

[0031] See also Figure 1 The tapping assembly 40 comprises two groups, one on each side of the positioning seat 20. The tapping assembly 40 drives a tapping head 41, which axially passes through the tapping clearance hole 35, via a screw. In this embodiment, the tapping head 41 is a long rod with tapping threads formed on the outer wall of the end of the rod. The tapping head 41 can simultaneously rotate during axial movement. This tapping drive method is conventional and will not be described in detail here. Alternatively, the axial displacement and rotational tapping functions of the tapping head 41 can be achieved by combining an axially driven cylinder and a rotary motor.

[0032] The upper end of the clamping block 33 is provided with an outwardly and downwardly directed curved surface 334, which reduces obstruction of the upper structure of the clamping block 33 and clearly reveals the clamping position. It also cooperates with the tapping stabilization block 42 provided on one side of the positioning seat 20. This tapping stabilization block 42 abuts against the upper end of the curved surface 334, suppressing the upward and outward vibration of the tapping head 41 during tapping, thereby ensuring tapping stability.

[0033] The clarinet key shaft drilling and tapping machine realizes a semi-automatic clamping and tapping method for the key shaft, thereby improving the tapping efficiency. At the same time, the clamping component 30 and the tapping component 40 are easy to operate, have high clamping stability, and improve the tapping accuracy.

[0034] In addition, a tapping protection sleeve 43 is provided at one end of the clamping block 33 away from the positioning block 21. The tapping protection sleeve 43 provides axial movement guidance and external protection for the tapping head 41. The tapping protection sleeve 43 is connected to the clamping groove 34, and part of the tapping head 41 is always located in the tapping protection sleeve 43. This structural design prevents the protection of the tapping head 41 and human safety during debugging or repair.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A clarinet key shaft tapping machine, comprising a machine platform (10), characterized in that: The clarinet key shaft hole tapping machine comprises: A positioning seat (20) is provided on the machine platform (10), and at least two outwardly protruding positioning blocks (21) are provided at intervals on one side of the positioning seat (20), and a concave positioning groove (22) is provided on one side of the positioning block (21); A clamping assembly (30) comprises a driving cylinder (31) disposed on the positioning seat (20), a sliding block (32) driven by the driving cylinder (31) and capable of axially moving toward one side of the positioning block (21), a clamping block (33) spaced apart on the sliding block (32) and protruding outward, and a clamping groove (34) disposed on a side of the clamping block (33) close to the positioning block (21) and corresponding to the positioning groove (22), wherein the clamping groove (34) and the positioning groove (22) are coaxially disposed and both are provided with a tapped clearance hole (35) penetrating the axis. The tapping assembly (40) has two groups and is respectively arranged on both sides of the positioning seat (20). The tapping assembly (40) drives a tapping head (41) that axially passes through the tapping clearance hole (35).

2. The clarinet key shaft drilling and tapping machine according to claim 1, characterized in that: The clamping groove (34) and the positioning groove (22) are both arc-shaped grooves, and the inner walls of the clamping groove (34) and the positioning groove (22) are both provided with mounting notches (331).

3. The clarinet key shaft drilling and tapping machine according to claim 2, characterized in that: A protruding buffer pad (332) is provided in the installation notch (331).

4. The clarinet key shaft drilling and tapping machine according to claim 1, characterized in that: The cross section of the positioning block (21) is arc-shaped, and a clearance notch (333) for the sliding block (32) to pass through is provided on one side of the lower end of the positioning block (21) close to the positioning seat (20).

5. The clarinet key shaft drilling and tapping machine according to claim 1, characterized in that: The upper end of the clamping block (33) is provided with an arcuate surface (334) facing outward and arranged downward.

6. The clarinet key shaft drilling and tapping machine according to claim 5, characterized in that: A tapping stabilizing block (42) capable of abutting against the upper end of the arc-shaped surface (334) is provided on one side of the positioning seat (20).

7. The clarinet key shaft drilling and tapping machine according to claim 6, characterized in that: An end of the positioning block (21) close to the positioning seat (20) is provided with a mounting plate (36) that is attached to the surface of the positioning seat (20).

8. The clarinet key shaft drilling and tapping machine according to claim 7, characterized in that: Circumferential stabilizing blocks (37) are provided at intervals on the positioning seat (20) to abut against the circumference of the mounting plate (36).

9. The clarinet key shaft drilling and tapping machine according to claim 1, characterized in that: A tapping protection sleeve (43) is provided at one end of the clamping block (33) away from the positioning block (21). The tapping protection sleeve (43) is communicated with the clamping groove (34), and a portion of the tapping head (41) is always located in the tapping protection sleeve (43).

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