New energy automobile motor shaft deep hole drilling tool
By designing a drilling deep hole tool for motor shafts of new energy vehicles, using a combined structure of positioning blocks, fixing sleeves, collets, guide sleeves, push plates and elastic parts, the problem of difficult to achieve high-strength radial locking during batch processing of existing tools is solved, and high-precision drilling and reducing production costs are achieved.
Patent Information
- Application Number
- CN202420682270.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-03
AI Technical Summary
When drilling the motor shaft of a new energy vehicle, it is difficult to achieve high-strength radial locking, resulting in the displacement and rotation of the workpiece during batch processing, resulting in abnormal tool breakage.
A new energy vehicle motor shaft drilling tool is designed, adopting a combined structure of positioning blocks, fixing sleeves, collets, guide sleeves, push plates and elastic parts. Through the coordination of multi-stage step holes and elastic parts, the motor shaft is pre-positioned, centered, clamped locked, and clamped locked, and elastically reset and release clamping after drilling is completed.
This tooling can ensure that the drill bit and the motor shaft are coaxial, and the drilling dimensional accuracy is high, avoid the motor shaft displacement, reduce the risk of drill bit fracture, improve production efficiency and reduce production costs.
Smart Images
Figure CN222569357U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drilling tools, in particular to a deep hole drilling tool for a motor shaft of a new energy vehicle. Background Art
[0002] As the core component of new energy vehicles, the role of the motor is self-evident, and the motor shaft is of utmost importance. Figure 1 , 2 As shown, a deep hole needs to be drilled in the center of the new energy motor shaft.
[0003] Conventional deep hole drilling tooling solutions have the following problems: 1. The tooling presses the outer chamfer of one end of the workpiece, and then presses the end face of the other end of the workpiece for drilling. The solution may result in the machined inner hole being not coaxial with the workpiece reference; 2. The tooling presses the outer chamfers of both ends of the workpiece and then drills. The solution ensures the coaxiality of the workpiece, but only presses the chamfered end faces at both ends of the workpiece, and cannot perform high-strength radial locking on the workpiece. During batch processing, the workpiece may be displaced and rotated, which may cause abnormal breakage of the tool.
[0004] Therefore, a new energy vehicle motor shaft deep hole drilling tool is urgently needed. Utility Model Content
[0005] The purpose of the utility model is to provide a tool for drilling deep holes in the motor shaft of a new energy vehicle. The tool pre-positions, centers, clamps and locks the motor shaft. After the deep hole drilling is completed, the tool elastically resets to release the clamping of the motor shaft, and pushes the motor shaft back to the pre-position, which is convenient for operators to pick up parts. The drill bit has high coaxiality with the motor shaft, and the dimensional accuracy of the drilled hole is higher, thereby ensuring product quality. At the same time, during batch processing, the motor shaft will not be displaced and the drill bit is not easy to break, thereby reducing production costs, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A tool for drilling deep holes in a motor shaft of a new energy vehicle comprises a positioning block, a fixing sleeve, a collet, a guide sleeve, a push plate and an elastic member; a through multi-step hole is provided in the fixing sleeve, the push plate is connected to one end of the collet, the push plate and the collet are slidably matched in the step hole, and the conical surface of one end of the collet is fitted with one of the conical holes in the step hole, and the motor shaft is plugged into one end of the collet; a boss is provided on the outer wall of the guide sleeve, the guide sleeve is slidably matched in the step hole, the boss is slidably matched in the collet, and the end face of the boss is fitted with the end face of the push plate, the elastic member is sleeved on the outer wall of the guide sleeve between the boss and the step hole, and the drill bit passes through the guide sleeve; one end of the positioning block pushes the motor shaft to fit with the end face of the guide sleeve, and the guide sleeve pushes the push plate to move so that the collet shrinks and clamps the motor shaft.
[0008] A further improvement of the utility model is that a clearance hole for the drill to pass through is provided at the center of the positioning block, and an inner chamfer is provided at one end of the clearance hole close to the motor shaft.
[0009] A further improvement of the utility model is that a flange is provided on the outer wall of the fixing sleeve, and the step holes include hole A, hole B, hole C and hole D in descending order.
[0010] A further improvement of the utility model is that hole A is a tapered hole, the tapered surface of one end of the collet fits the inner wall of hole A, the other end of the collet and the push plate are slidably matched in hole B, and a force unloading groove is opened in the circumference of the collet.
[0011] A further improved solution of the utility model is that one end of the guide sleeve is slidably matched with the hole D, and a clamping groove is provided between the boss and the body of the guide sleeve.
[0012] A further improvement of the present invention is that the elastic member is a spring, one end of the spring is accommodated in the slot, and the other end is in contact with the step surface at the hole C.
[0013] A further improvement of the utility model is that the drill bit is a gun drill or a twist drill.
[0014] Beneficial effects of the utility model:
[0015] The utility model discloses a new energy vehicle motor shaft drilling deep hole tool, which pre-positions, centers, clamps and locks the motor shaft. After the deep hole drilling is completed, the tool elastically resets to release the clamping of the motor shaft, and pushes the motor shaft back to the pre-position, which is convenient for operators to disassemble and assemble the motor shaft, greatly improving production efficiency.
[0016] The utility model provides a deep hole drilling tool for a motor shaft of a new energy vehicle, and the drill bit has a high coaxiality with the motor shaft, and the dimensional accuracy of the drilled hole is higher, thereby ensuring product quality.
[0017] The utility model discloses a new energy vehicle motor shaft drilling deep hole tooling, the drill bit and the motor shaft have high coaxiality, the dimensional accuracy of the drilled hole is higher, and the product quality is guaranteed; at the same time, during batch processing, the motor shaft will not be displaced, the drill bit is not easy to break, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure when the motor shaft is not drilled.
[0019] Figure 2 This is a schematic diagram of the structure after drilling the motor shaft.
[0020] Figure 3 It is a structural schematic diagram of the utility model in the standby state.
[0021] Figure 4 for Figure 3 A partial enlarged view of .
[0022] Figure 5 It is a cross-sectional view of the positioning block of the utility model.
[0023] Figure 6 It is a front view of the collet of the utility model.
[0024] Figure 7 It is a cross-sectional view of the guide sleeve of the utility model.
[0025] Figure 8 It is a structural schematic diagram of the utility model in working state.
[0026] In the figure: 1-positioning block, 101-avoidance hole, 102-inner chamfer, 2-fixing sleeve, 201-flange, 202-hole A, 203-hole B, 204-hole C, 205-hole D, 3-collet, 301-unloading groove, 4-guide sleeve, 401-boss, 402-card slot, 5-push plate, 6-elastic member, 7-motor shaft, 8-drill bit. DETAILED DESCRIPTION
[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0028] Example 1: Figures 1 to 7 As shown, a new energy vehicle motor shaft deep hole drilling tool comprises a positioning block 1, a fixing sleeve 2, a collet 3, a guide sleeve 4, a push plate 5 and an elastic member 6; a through multi-step step hole is provided in the fixing sleeve 2, the push plate 5 is connected to one end of the collet 3, the push plate 5 and the collet 3 are slidably matched in the step hole, and the conical surface of one end of the collet 3 is fitted with one of the conical holes of the step hole, and the motor shaft 7 is plugged into one end of the collet 3; a boss 401 is provided on the outer wall of the guide sleeve 4, the guide sleeve 4 is slidably matched in the step hole, the boss 401 is slidably matched in the collet 3, and the end face of the boss 401 is fitted with the end face of the push plate 5, the elastic member 6 is sleeved on the outer wall of the guide sleeve 4 between the boss 401 and the step hole, and the drill bit 8 passes through the guide sleeve 4; one end of the positioning block 1 pushes the motor shaft 7 to fit with the end face of the guide sleeve 4, and the guide sleeve 4 pushes the push plate 5 to move so that the collet 3 shrinks and clamps the motor shaft 7.
[0029] A clearance hole 101 for the drill bit 8 to pass through is provided at the center of the positioning block 1 , and an inner chamfer 102 is provided at one end of the clearance hole 101 close to the motor shaft 7 .
[0030] The outer wall of the fixing sleeve 2 is provided with a flange 201, and the step holes include hole A202, hole B203, hole C204 and hole D205 in descending order.
[0031] The hole A202 is a tapered hole, the tapered surface of one end of the collet 3 fits with the inner wall of the hole A202, the other end of the collet 3 and the push plate 5 are slidably matched in the hole B203, and a force unloading groove 301 is opened in the circumference of the collet 3.
[0032] One end of the guide sleeve 4 is slidably matched with the hole D205 , and a slot 402 is provided between the boss 401 and the body of the guide sleeve 4 .
[0033] The elastic member 6 is a spring, one end of which is accommodated in the slot 402 , and the other end of which is in contact with the step surface at the hole C204 .
[0034] In this embodiment, the drill bit 8 is a gun drill.
[0035] The design principle of the utility model is as follows:
[0036] Positioning block 1: connected to the power output end of the oil cylinder of the equipment body. After the machining program is started, it performs reciprocating linear motion up and down in a given direction. After contacting the outer chamfer of the motor shaft 7, it pushes the motor shaft 7 to fit the end surface of the guide sleeve 4.
[0037] The fixing sleeve 2 is connected to the equipment body through the flange 201, and accommodates the collet 3 and the push plate 5. When the collet 3 moves axially, the conical surface fits against the collet 3 to lock it radially.
[0038] Collet 3: accommodated in the fixed sleeve 2, accommodating the guide sleeve 4, and bolted to the push plate 5; with the axial movement of the guide sleeve 4, the conical surface fits the fixed sleeve 2, and the collet 3 is circumferentially provided with a force unloading groove 301. After the conical surface is subjected to force, it contracts radially, thereby applying radial force to the motor shaft 7.
[0039] Guide sleeve 4: accommodated in the collet 3, accommodating the elastic member 6 and the drill bit 8, and moves axially with the motor shaft 7, driving the push plate 5 and the collet 3 to move. After the drilling process is completed, it is subjected to the reaction force of the elastic member 6 and performs axial reset.
[0040] Push plate 5: accommodated in the fixed sleeve 2, bolted to the collet 3, after receiving the axial thrust of the guide sleeve 4, it drives the collet 3 to move axially and lock radially.
[0041] Spring: accommodated in the guide sleeve 4. After the drilling process is completed, the fixed sleeve 2 applies a thrust to the guide sleeve 4, so that the collet 3 releases the clamping of the motor shaft 7.
[0042] The motor shaft 7 is pre-inserted into the collet 3, and fits with the guide sleeve 4 as pushed by the positioning block 1, and is finally radially locked by the collet 3, waiting for the drill bit 8 to perform drilling processing.
[0043] The drill bit 8 is accommodated in the guide sleeve 4 and performs drilling processing on the motor shaft 7 after the processing program is started.
[0044] The working principle of the utility model is as follows:
[0045] In this embodiment, the equipment matched with the tooling is a vertical deep hole drilling machine, the spindle box of the vertical deep hole drilling machine is located at the bottom, so the drill bit 8 moves from bottom to top during operation; in addition, a vertically arranged oil cylinder is installed on the top of the vertical deep hole drilling machine, and the positioning block 1 is connected to the power output end of the oil cylinder; the fixing sleeve 2 is connected to the workbench of the vertical deep hole drilling machine through the flange 201. When working specifically:
[0046] 1: The operator inserts the motor shaft 7 into the collet 3 for pre-positioning.
[0047] 2: The operator starts the equipment processing program.
[0048] 3: The positioning block 1 moves downward in a given direction to fit the inner chamfer 102 and the outer chamfer at the top of the motor shaft 7, pushing the bottom end surface of the motor shaft 7 to fit with the guide sleeve 4.
[0049] Fourth: the guide sleeve 4 slides in the fixed sleeve 2 in a given direction, and the bottom end of the guide sleeve 4 fits with the push plate 5, thereby pushing the push plate 5 and the collet chuck 3 to move downward synchronously.
[0050] Five: The cone surface of the collet 3 fits with the fixed sleeve 2 in a given direction, and the fixed sleeve 2 is fixed to the workbench of the vertical deep hole drilling machine, exerting a reverse force on the collet 3. The collet 3 radially contracts along the direction of the circumferential unloading groove 301, thereby exerting a radial force on the motor shaft 7.
[0051] Six: At this point, the pre-positioning, centering, clamping and locking of the motor shaft 7 on the tooling are completed.
[0052] Seven: The drill bit 8 starts drilling from bottom to top.
[0053] 8. After drilling is completed, the positioning block 1 moves upward and returns to the processing origin. The elastic member 6 exerts a thrust on the guide sleeve 4 under the support of the fixed sleeve 2, pushing the guide sleeve 4 and the collet 3 to axially reset, and the collet 3 releases the radial clamping of the motor shaft 7.
[0054] Nine: The operator takes out the motor shaft 7 from the collet 3 to complete the deep hole drilling process, and the operator cycles through the subsequent work in sequence.
[0055] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A deep hole drilling tool for motor shaft of new energy vehicle, characterized by: The invention comprises a positioning block (1), a fixing sleeve (2), a collet (3), a guide sleeve (4), a push plate (5) and an elastic member (6); the fixing sleeve (2) is provided with a through multi-stepped hole, the push plate (5) is connected to one end of the collet (3), the push plate (5) and the collet (3) are slidably matched in the step hole, and the conical surface of one end of the collet (3) is fitted with one of the conical holes of the step hole, and the motor shaft (7) is plugged into one end of the collet (3); the outer wall of the guide sleeve (4) is provided with a boss (401), the guide sleeve (4) is provided with a boss (402), and the guide sleeve (4) is provided with a boss (403). The guide sleeve (4) is slidably matched with the step hole, the boss (401) is slidably matched with the collet (3), and the end surface of the boss (401) is in contact with the end surface of the push plate (5), the elastic member (6) is sleeved on the outer wall of the guide sleeve (4) between the boss (401) and the step hole, and the drill bit (8) passes through the guide sleeve (4); one end of the positioning block (1) pushes the motor shaft (7) to fit with the end surface of the guide sleeve (4), and the guide sleeve (4) pushes the push plate (5) to move so that the collet (3) contracts and clamps the motor shaft (7).
2. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 1, characterized in that: A clearance hole (101) for the drill bit (8) to pass through is provided at the center of the positioning block (1), and an inner chamfer (102) is provided at one end of the clearance hole (101) close to the motor shaft (7).
3. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 1 or 2, characterized in that: The outer wall of the fixing sleeve (2) is provided with a flange (201), and the step holes include, from large to small, a hole A (202), a hole B (203), a hole C (204), and a hole D (205).
4. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 3, characterized in that: The hole A (202) is a tapered hole, the tapered surface of one end of the collet (3) is in contact with the inner wall of the hole A (202), the other end of the collet (3) and the push plate (5) are slidably matched in the hole B (203), and a force-releasing groove (301) is provided in the circumference of the collet (3).
5. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 3, characterized in that: One end of the guide sleeve (4) is slidably fitted into the hole D (205), and a clamping groove (402) is provided between the boss (401) and the body of the guide sleeve (4).
6. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 5, characterized in that: The elastic member (6) is a spring, one end of which is accommodated in the slot (402) and the other end of which is in contact with the step surface at the hole C (204).
7. A new energy vehicle motor shaft deep hole drilling tool as claimed in claim 1, characterized in that: The drill bit (8) is a gun drill or a twist drill.