A machine tool for processing a motor housing

Abstract

The application relates to the technical field of machine tool machining parts, and discloses a motor shell machining machine tool, which comprises a support frame, the top of the inner cavity of the support frame is provided with a first ring groove, a second spring is movably sleeved on the middle part of the outer surface of a second transmission shaft, and the second transmission shaft and the support frame are in transmission connection through the second spring and the first ring groove; the middle part of the inner cavity of the support frame is provided with a second ring groove; the bottom of the inner cavity of the support frame is provided with two groups of symmetrical straight grooves; and the inner part of the bottom end of the second transmission shaft is provided with an inner groove. The motor shell machining machine tool can drive a drill bit to move downwards and impact the surface of a motor shell before the machine tool performs a drilling operation on the surface of the motor shell, so that marks are left on the hole positions of the motor shell, and in the subsequent drilling process, the drill bit will not slip when performing a drilling operation on the motor shell with a curved surface structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tool machining parts, in particular to a motor shell machining machine tool. BACKGROUND

[0002] The motor shell is a supporting part for installing the rotor, stator and arranging the heat dissipation fins, and is an indispensable important component in the motor. In order to facilitate the installation of electrical elements, drilling is a necessary process in the production and manufacturing of the motor shell. However, due to the design of the curved surface structure of the surface of the motor shell, the existing drilling equipment is prone to slipping when driving the high-speed rotating drill bit to drill. This not only affects the machining precision of the motor shell hole position, but also causes the drill bit to be out of balance when slipping, which is prone to breaking and causing injury, resulting in a large safety hazard in the production and machining process, and poor stability and reliability.

[0003] Therefore, there is an urgent need for a drilling equipment for drilling curved surface structure to solve the above-mentioned defects of the existing drilling equipment when drilling the motor shell with curved surface structure. SUMMARY

[0004] (I) Technical problems solved

[0005] The present application provides a motor shell machining machine tool, which has the advantages of not slipping when drilling the motor shell with curved surface structure, effectively improving the drilling precision of the surface of the motor shell, and not causing breaking and injury due to the imbalance of the drill bit, high safety and reliability, and solves the problem that the existing drilling equipment is prone to slipping when driving the high-speed rotating drill bit to drill the motor shell with curved surface structure, which not only affects the machining precision of the motor shell hole position, but also causes the drill bit to be out of balance when slipping, which is prone to breaking and causing injury, resulting in a large safety hazard in the production and machining process.

[0006] (II) Technical solutions

[0007] The motor shell machining machine tool provided by the application has the advantages that the first transmission shaft and the second transmission shaft are connected through the first spring and the second spring, the first transmission shaft and the second transmission shaft are connected through the first ring groove and the second ring groove, the first transmission shaft and the second transmission shaft are connected through the first spring and the second spring, and the first transmission shaft and the second transmission shaft are connected through the first ring groove and the second ring groove, so that the first transmission shaft and the second transmission shaft can be connected in a transmission mode, and the first transmission shaft and the second transmission shaft can be connected in a transmission mode.

[0008] Preferably, the top end of the first transmission shaft and the bottom end of the second transmission shaft are provided as a wedge-shaped structure matched with each other, and in the initial stage, the top end of the first transmission shaft and the bottom end of the second transmission shaft are in contact with each other under the elastic force of the first spring and the second spring.

[0009] Preferably, the elastic strength of the first spring is smaller than the elastic strength of the second spring, and in the initial stage, when the first transmission shaft and the second transmission shaft are relatively rotated, the first transmission shaft is forced to move downward and impact the surface of the motor shell under the elastic force of the second spring.

[0010] Preferably, in the initial stage, the limiting clamping blocks on the first transmission shaft are clamped in the straight grooves on the support frame, and under the limiting action of the bottom end of the first ring groove, the bottom end of the limiting clamping blocks on the first transmission shaft and the bottom end of the straight grooves on the support frame do not contact in the initial stage.

[0011] Preferably, a gap is reserved between the top end of the drill bit clamp and the bottom end of the support frame, and the height of the gap is greater than the length of the overlap between the limiting clamping blocks on the first transmission shaft and the straight grooves on the support frame in the initial stage.

[0012] Preferably, the inside of the top end of the second transmission shaft is provided with a cross groove hole along the axial direction, and the transmission connection is formed between the cross groove hole and the rotating main shaft of the machine tool.

[0013] Preferably, the bottom end of the limiting clamping block is provided as a semicircular structure, the top of the straight groove on the two sides is rounded, and the rounded corners of the adjacent sides are in contact.

[0014] (Three) beneficial effects

[0015] The present application has the following advantages:

[0016] The motor shell machining machine tool, with the support frame and the structure arranged thereon, can drive the drill bit to move downward and impact the surface of the motor shell to leave marks on the hole position before the machine tool performs drilling operation on the surface of the motor shell, so that the drill bit does not slip when drilling the motor shell with a curved surface structure in the subsequent drilling process, effectively improving the drilling precision of the motor shell surface and preventing the drill bit from breaking due to unbalanced stress. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application has the following advantages:

[0018] Figure 2 The present application has the following advantages:

[0019] Figure 3 The present application has the following advantages:

[0020] Figure 4 The present application has the following advantages:

[0021] Figure 5 The present application has the following advantages:

[0022] In the figure: 1, support frame; 2, first transmission shaft; 3, drill bit clamp; 4, second transmission shaft; 5, first spring; 6, second spring; 7, first ring groove; 8, second ring groove; 9, straight groove; 10, inner groove; 11, cross slot hole; 12, linkage pull rod; 13, limit block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] As shown in Figure 1 , Figure 2 A motor shell machining machine tool, comprising a support frame 1, a first transmission shaft 2 and a second transmission shaft 4, the support frame 1 is fixedly installed on the up-down movement mechanism of the rotating main shaft of the machine tool by bolts, the bottom of the inner cavity of the support frame 1 is sleeved with the first transmission shaft 2, and the bottom end of the first transmission shaft 2 is provided with a drill bit clamp 3 for clamping drill bits of different specifications, the top of the inner cavity of the support frame 1 is movably sleeved with the second transmission shaft 4 which is in transmission connection with the rotating main shaft of the machine tool, and the second transmission shaft 4 is provided with a linkage pull rod 12 which is in transmission connection with the drill bit clamp 3, and the linkage pull rod 12 is provided with a limit block 13.Figure 3 As shown in the figure, the top of the inner cavity of the support frame 1 is provided with a first ring groove 7, and a second spring 6 is movably sleeved on the middle part of the outer surface of the second transmission shaft 4, and the transmission connection between the second transmission shaft 4 and the support frame 1 is formed through the second spring 6 and the first ring groove 7, thereby providing sufficient moving space for the upward movement of the second transmission shaft 4 and providing downward pressure for the second transmission shaft 4, enhancing the strength of power transmission between the first transmission shaft 2 and the second transmission shaft 4, the middle part of the inner cavity of the support frame 1 is provided with a second ring groove 8, and the bottom of the inner cavity of the support frame 1 is provided with two groups of symmetrical straight grooves 9, and the top end of the straight groove 9 is communicated with the second ring groove 8, as shown in the figure, Figure 5 As shown in the figure, the inner part of the bottom end of the second transmission shaft 4 is provided with an inner groove 10;

[0025] As shown in the figure, Figure 4 The middle part of the outer surface of the first transmission shaft 2 is symmetrically provided with two groups of limiting clamping blocks 13, which are matched with the straight grooves 9 on the support frame 1, and the top end of the first transmission shaft 2 is fixedly installed with a linkage pull rod 12 extending into the inner groove 10, and a first spring 5 is movably sleeved on the top of the outer surface of the linkage pull rod 12, and the transmission connection between the first transmission shaft 2 and the second transmission shaft 4 is formed through the first spring 5.

[0026] As shown in the figure, Figure 2 In this technical solution, the top end of the first transmission shaft 2 and the bottom end of the second transmission shaft 4 are provided with a wedge-shaped structure matched with each other, and in the initial stage, under the elastic force of the first spring 5 and the second spring 6, the top end of the first transmission shaft 2 and the bottom end of the second transmission shaft 4 are in contact with each other, and when the relative rotating action occurs between the second transmission shaft 4 and the first transmission shaft 2, under the action of the wedge-shaped structure thereon, the first transmission shaft 2 can be forced to move downward with the drill chuck 3 thereon and generate impact, so as to leave marks on the motor shell with curved surface structure, and in the subsequent drilling process, the drill bit is not easy to slip.

[0027] As shown in the figure, Figure 1 In this technical solution, the elastic strength of the first spring 5 is less than that of the second spring 6, and in the initial stage, when the relative rotating action occurs between the first transmission shaft 2 and the second transmission shaft 4, under the elastic force of the second spring 6, the first transmission shaft 2 can be forced to move downward and impact the surface of the motor shell.

[0028] As shown in the figure, Figure 1 , Figure 4 and Figure 5As shown, in this technical solution, in the initial stage, the limiting block 13 on the first drive shaft 2 is engaged in the straight groove 9 on the support frame 1. Under the limiting action of the bottom end of the first annular groove 7, the bottom end of the limiting block 13 on the first drive shaft 2 does not contact the bottom end of the straight groove 9 on the support frame 1 in the initial stage. Then, in the initial stage, when the second drive shaft 4 rotates with the rotating spindle of the machine tool, under the limiting engagement action of the limiting block 13 and the straight groove 9, the first drive shaft 2 and the second drive shaft 4 can rotate relative to each other, and force the first drive shaft 2 and the drill chuck 3 on it to move downward and generate an impact.

[0029] like Figure 2 As shown, in this technical solution, there is a gap between the top of the drill bit chuck 3 and the bottom of the support frame 1, and the height of the gap is greater than the overlap length between the upper limit block 13 of the first drive shaft 2 and the straight groove 9 on the support frame 1 when they are initially engaged. When the drill bit on the drill bit chuck 3 is fixed on the surface of the motor housing and continuously presses down on the support frame 1 and its structure, the support frame 1 and the first drive shaft 2 move relative to each other along their axial direction, and force the second drive shaft 4 to move upward to compress the second spring 6 until the second spring 6 is fully compressed. At the same time, the limit block 13 and the straight groove 9 are misaligned, and under the action of the second annular groove 8, the first drive shaft 2 and the drill bit chuck 3 on it can rotate synchronously with the second drive shaft 4 to perform drilling operations on the surface of the motor housing.

[0030] like Figure 5 As shown, in this technical solution, the top end of the second transmission shaft 4 is provided with a cross groove 11 along its axial direction, and a transmission connection is formed between the cross groove 11 and the rotating spindle of the machine tool, so that the rotating spindle can drive the second transmission shaft 4 to rotate when it rotates. At the same time, when the second transmission shaft 4 is squeezed and moves upward, the corresponding power transmission can be maintained between them.

[0031] like Figure 3 , Figure 4 As shown, in this technical solution, the bottom end of the limiting block 13 is set as a semi-circular structure, and the top of both sides of the straight groove 9 is rounded, and the rounded corners of adjacent sides are in contact. Thus, after the drilling of the motor housing is completed, under the elastic force of the second spring 6, the limiting block 13 can be forced to automatically return to the initial position and be locked into the inside of the straight groove 9.

[0032] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A machine tool for processing motor housings, comprising a support frame (1), a first drive shaft (2), and a second drive shaft (4), wherein the first drive shaft (2) is sleeved at the bottom of the inner cavity of the support frame (1), and a drill chuck (3) is provided at the bottom end of the first drive shaft (2), and the second drive shaft (4) is movably sleeved at the top of the inner cavity of the support frame (1), characterized in that: The top of the inner cavity of the support frame (1) is provided with a first annular groove (7), and a second spring (6) is movably sleeved in the middle of the outer surface of the second transmission shaft (4). The second spring (6) and the first annular groove (7) form a transmission connection between the second transmission shaft (4) and the support frame (1). The middle of the inner cavity of the support frame (1) is provided with a second annular groove (8), and two sets of symmetrically arranged straight grooves (9) are provided at the bottom of the inner cavity of the support frame (1). The top of the straight grooves (9) is connected to the second annular groove (8). The bottom end of the second transmission shaft (4) is provided with an inner groove (10). The top end of the first transmission shaft (2) and the bottom end of the second transmission shaft (4) are provided with a wedge-shaped structure that cooperates with each other. Two sets of limiting blocks (13) are symmetrically provided in the middle of the outer surface of the first transmission shaft (2), and cooperate with the straight groove (9) on the support frame (1). A linkage rod (12) extending to the inner groove (10) is fixedly installed at the top of the first transmission shaft (2), and a first spring (5) is movably sleeved on the top of the outer surface of the linkage rod (12). A transmission connection is formed between the first transmission shaft (2) and the second transmission shaft (4) through the first spring (5). The elastic strength of the first spring (5) is less than that of the second spring (6).

2. The machine tool for processing motor housings according to claim 1, characterized in that: In the initial stage, under the elastic force of the first spring (5) and the second spring (6), the top end of the first drive shaft (2) and the bottom end of the second drive shaft (4) come into contact with each other.

3. The motor housing processing machine tool according to claim 2, characterized in that: In the initial stage, when the first drive shaft (2) and the second drive shaft (4) rotate relative to each other, the first drive shaft (2) can be forced to move downward and impact the surface of the motor housing under the elastic force of the second spring (6).

4. The machine tool for processing motor housings according to claim 3, characterized in that: In the initial stage, the limiting block (13) on the first drive shaft (2) is engaged in the straight groove (9) on the support frame (1), and under the limiting action of the bottom end of the first ring groove (7), the bottom end of the limiting block (13) on the first drive shaft (2) does not contact the bottom end of the straight groove (9) on the support frame (1) in the initial stage.

5. A machine tool for processing motor housings according to claim 4, characterized in that: There is a gap between the top of the drill bit clamp (3) and the bottom of the support frame (1), and the height of the gap is greater than the overlap length between the upper limit block (13) of the first drive shaft (2) and the straight groove (9) on the support frame (1) when they are engaged in the initial stage.

6. A machine tool for processing motor housings according to claim 5, characterized in that: The top end of the second drive shaft (4) is provided with a cross slot (11) along its axial direction, and a transmission connection is formed between the cross slot (11) and the rotating spindle of the machine tool.

7. A machine tool for processing motor housings according to claim 6, characterized in that: The bottom of the limiting block (13) is set as a semi-circular structure, and the top of both sides of the straight groove (9) is rounded. The positions of the limiting block (13) and the straight groove (9) correspond to each other.

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