Workpiece automatic clamping mechanism

Abstract

The utility model relates to the technical field of quenching of valve body class parts, disclose a workpiece automatic clamping mechanism, including base, still include the spring chuck for clamping workpiece of installing on the upper portion of base, the middle part of spring chuck is equipped with the accommodation cavity for workpiece insertion, the outside of spring chuck has the sliding sleeve, the sliding sleeve is the hollow structure, its lower part is sleeved on the base and can slide up and down, the upper periphery surface of spring chuck is the outer taper surface that spreads upwards, the upper inner periphery surface of sliding sleeve is equipped with the inner taper surface cooperation with outer taper surface, when the inner taper surface cooperates with outer taper surface, spring chuck clamps workpiece tightly. The utility model discloses workpiece automatic clamping mechanism, realizes the automatic clamping of the part needing quenching, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of quenching technology for valve body parts, specifically to an automatic workpiece clamping mechanism. Background Technology

[0002] In hydraulic systems, solenoid valves act as actuators, converting electrical signals into hydraulic signals and controlling pressure and flow within the system. They are key components of hydraulic systems. Automotive solenoid valves are actuators in electronic control systems. The performance of the hydraulic system directly affects the smoothness of gear shifting and fuel economy, making it an important component of automatic transmissions. The quality of solenoid valve control over gear shifting performance directly impacts the smoothness and gentleness of the vehicle's ride during gear changes; therefore, the application of solenoid valves in automotive control systems is crucial. The valve body is one of the important components of a solenoid valve. When the solenoid valve switches oil circuits, the valve body generally withstands certain frictional and impact forces. Some areas of the valve body are prone to wear; therefore, these easily worn areas require a certain level of strength and toughness, and the surface should also have a certain degree of wear resistance. Quenching heat treatment of the easily worn areas of the valve body can significantly improve its mechanical properties.

[0003] Under these circumstances, high-quality, high-efficiency automated quenching machine tools have found their application. In a fully automated CNC quenching production line for valve bodies, the end faces of the valve body are quenched. A robot transports the valve body parts from the loading conveyor to a high-speed rotating lower center fixture inside the quenching machine tool. Then, a divider drives a four-position turntable to rotate the valve body parts to the quenching station to achieve the quenching function. Automated quenching machine tools generally require specialized tooling fixtures for different quenching parts. Automatic workpiece clamping mechanisms are designed to improve the working efficiency of automated quenching machine tools, especially in certain special conditions, such as when the parts to be quenched have no center holes at either end or only one end, or when the area requiring quenching is on the end face of the workpiece, making it impossible to use upper centers for auxiliary clamping, necessitating a specialized tooling fixture mechanism. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the above-mentioned technologies by providing an automatic workpiece clamping mechanism that can automatically clamp parts that need to be quenched, and has a wide range of applications.

[0005] To achieve the above objectives, the automatic workpiece clamping mechanism designed in this utility model includes a base and a spring chuck installed on the upper part of the base for clamping the workpiece. The spring chuck has a receiving cavity in the middle for inserting the workpiece. A sliding sleeve is fitted around the outside of the spring chuck. The sliding sleeve has a hollow structure and its lower part is fitted on the base and can slide up and down. The upper outer circumferential surface of the spring chuck is an upwardly expanding outer conical surface. The upper inner circumferential surface of the sliding sleeve has an inner conical surface that mates with the outer conical surface. When the inner conical surface mates with the outer conical surface, the spring chuck clamps the workpiece.

[0006] Preferably, a compression spring is fitted onto the base, with the upper end of the compression spring fixed to the inner wall of the sliding sleeve and the lower end fixed to the base.

[0007] Preferably, the base is provided with a first step, the lower end of the compression spring abuts against the first step, and the inner wall of the sliding sleeve is provided with a second step, the upper end of the compression spring abuts against the second step.

[0008] Preferably, the inner wall of the sliding sleeve is provided with a third step that cooperates with the first step to limit the downward movement of the sliding sleeve.

[0009] Preferably, the bottom of the spring clip is mounted on the base by a laterally inserted bolt.

[0010] Preferably, when the outer conical surface mates with the inner conical surface, the lower end of the sliding sleeve remains fitted onto the base.

[0011] Preferably, the outer wall of the sliding sleeve is provided with a stop extending horizontally outward. The cylinder pushes the pressure plate, and the pressure plate presses down on the stop, thereby controlling the up and down movement of the sliding sleeve.

[0012] Preferably, the automatic workpiece clamping mechanism is mounted on the lower center and rotates together with the lower center under the drive of the motor.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] 1. It can clamp workpieces efficiently, accurately, and reliably;

[0015] 2. It has a wide range of applications, especially when top-mounted clamping cannot be used to effectively clamp the workpiece;

[0016] 3. Mounted on a high-speed rotating lower center, it does not require an upper center for clamping, and can achieve high-efficiency quenching of the valve body end face at the quenching station of an automatic quenching machine. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the automatic workpiece clamping mechanism of this utility model.

[0018] The components in the diagram are labeled as follows:

[0019] 1. Base; 2. Workpiece; 3. Spring collet; 4. Receiving cavity; 5. Sliding sleeve; 6. Outer conical surface; 7. Inner conical surface; 8. Compression spring; 9. First step; 10. Second step; 11. Bolt; 12. Stop; 13. Cylinder; 14. Pressure plate; 15. Third step. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] like Figure 1 As shown, an automatic workpiece clamping mechanism includes a base 1 and a spring chuck 3 mounted on the upper part of the base 1 for clamping a workpiece 2. The spring chuck 3 has a receiving cavity 4 in the middle for inserting the workpiece 2. A sliding sleeve 5 is fitted on the outside of the spring chuck 3. The sliding sleeve 5 has a hollow structure and its lower part is fitted on the base 1 and can slide up and down. The upper outer peripheral surface of the spring chuck 3 is an upwardly expanding outer conical surface 6. The upper inner peripheral surface of the sliding sleeve 5 is provided with an inner conical surface 7 that cooperates with the outer conical surface 6. When the inner conical surface 7 cooperates with the outer conical surface 6, the spring chuck 3 clamps the workpiece 2.

[0022] The base 1 is fitted with a compression spring 8, the upper end of which is fixed to the inner wall of the sliding sleeve 5, and the lower end is fixed to the base 1.

[0023] In addition, the base 1 is provided with a first step 9, the lower end of the compression spring 8 abuts against the first step 9, the inner wall of the sliding sleeve 5 is provided with a second step 10, the upper end of the compression spring 8 abuts against the second step 10, and the inner wall of the sliding sleeve 5 is provided with a third step 15 that cooperates with the first step 10.

[0024] In this embodiment, the bottom of the spring collet 3 is mounted on the base 1 by a laterally inserted bolt 11.

[0025] In this embodiment, when the outer conical surface 6 and the inner conical surface 7 are engaged, the lower end of the sliding sleeve 5 is still fitted onto the base 1.

[0026] In this embodiment, a baffle 12 extending horizontally outward is provided on the outer wall of the sliding sleeve 5. The cylinder 13 pushes the pressure plate 14, and the pressure plate 14 presses down on the baffle 12 to control the up and down movement of the sliding sleeve 5.

[0027] In this embodiment, under normal conditions, the spring collet 3 is in a clamped state, which can clamp the workpiece 2 efficiently, accurately and reliably, especially when the top center cannot be used for auxiliary clamping, it can still effectively clamp the workpiece 2.

[0028] When it is necessary to switch workpiece 2, cylinder 13 drives pressure plate 14 to move sliding sleeve 5 downward, thereby compressing the compression spring 8 inside sliding sleeve 5. At this time, spring collet 3 is in the loose state, and the robot can then remove workpiece 2, transport the new workpiece 2, and place it into the receiving cavity 4 of spring collet 3. Then, cylinder 13 moves. When cylinder 13 drives pressure plate 14 upward, due to the characteristic that compression spring 8 can automatically return to its original length after compression, compression spring 8 drives sliding sleeve 5 to move upward. At this time, sliding sleeve 5 forces spring collet 3 into a clamping state, thereby clamping workpiece 2.

[0029] In this embodiment, during assembly, the compression spring 8 is first placed on the first step 9 of the base 1, then the sliding sleeve 5 is placed on the base, and the upper end of the compression spring 8 is pressed down by the second step 10. Then, the spring clip 3 is inserted into the hole of the sliding sleeve 5 and fixed to the base 1 with bolts 11. Finally, the pressure plate 14 is installed and fixed on the cylinder 13. At this time, the pressure plate 14 is above the stop 12 of the sliding sleeve 5.

[0030] In this embodiment, it is installed on the lower center point and rotates together with the lower center point under the drive of the motor.

[0031] This utility model of automatic workpiece clamping mechanism can clamp workpiece 2 efficiently, accurately and reliably; it has a wide range of applications, especially when the upper center cannot be used for auxiliary clamping, it can still effectively clamp workpiece 2; it is mounted on a high-speed rotating lower center, so there is no need for the upper center to assist in clamping, and the valve body end face can be quenched efficiently at the quenching station of an automatic quenching machine.

[0032] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this utility model is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this utility model are defined only by the scope of the claims.

[0033] The shapes, dimensions, ratios, angles, and figures disclosed in the description of various aspects of this specification and claims are merely examples, and therefore, this specification and claims are not limited to the details shown. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it would be determined that they unnecessarily obscure the focus of this specification and claims.

[0034] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. An automatic workpiece clamping mechanism, comprising a base (1), characterized in that: It also includes a spring collet (3) installed on the upper part of the base (1) for clamping the workpiece (2). The spring collet (3) has a receiving cavity (4) in the middle for inserting the workpiece (2). The spring collet (3) is covered with a sliding sleeve (5). The sliding sleeve (5) is a hollow structure. Its lower part is fitted on the base (1) and can slide up and down. The upper outer circumferential surface of the spring collet (3) is an upwardly spreading outer conical surface (6). The upper inner circumferential surface of the sliding sleeve (5) is provided with an inner conical surface (7) that cooperates with the outer conical surface (6). When the inner conical surface (7) cooperates with the outer conical surface (6), the spring collet (3) clamps the workpiece (2).

2. The automatic workpiece clamping mechanism as described in claim 1, characterized in that: A compression spring (8) is fitted on the base (1). The upper end of the compression spring (8) is fixed on the inner wall of the sliding sleeve (5), and the lower end is fixed on the base (1).

3. The automatic workpiece clamping mechanism as described in claim 2, characterized in that: The base (1) is provided with a first step (9), the lower end of the compression spring (8) abuts against the first step (9), the inner wall of the sliding sleeve (5) is provided with a second step (10), and the upper end of the compression spring (8) abuts against the second step (10).

4. The automatic workpiece clamping mechanism as described in claim 3, characterized in that: The inner wall of the sliding sleeve (5) is provided with a third step (15) that cooperates with the first step (9).

5. The automatic workpiece clamping mechanism as described in claim 1, characterized in that: The bottom of the spring collet (3) is mounted on the base (1) by a laterally inserted bolt (11).

6. The automatic workpiece clamping mechanism as described in claim 1, characterized in that: When the outer conical surface (6) and the inner conical surface (7) are engaged, the lower end of the sliding sleeve (5) is still fitted onto the base (1).

7. The automatic workpiece clamping mechanism as described in claim 1, characterized in that: The outer wall of the sliding sleeve (5) is provided with a baffle (12) that extends horizontally outward. The cylinder (13) pushes the pressure plate (14), and the pressure plate (14) presses down on the baffle (12) to control the up and down movement of the sliding sleeve (5).

8. The automatic workpiece clamping mechanism as described in claim 1, characterized in that: The automatic workpiece clamping mechanism is mounted on the lower center and rotates together with the lower center under the drive of the motor.

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