Hydraulic clamp for valve sleeve parts

Abstract

The hydraulic clamp for the valve sleeve type parts is stable in clamping and high in machining efficiency and machining quality. The clamping device comprises an upper base and a lower base, and further comprises a vertical clamping mechanism and a horizontal clamping mechanism, the vertical clamping mechanism comprises a first hydraulic cylinder installed in the lower base, the output end of the first hydraulic cylinder is connected with a locking shaft, the locking shaft upwards penetrates through the upper base and a positioning mandrel, and a shaft cap is arranged at the top end of the locking shaft; the locking shaft is sleeved with an opening pressing plate below the shaft cap, the positioning mandrel is installed on the upper base and is a double-layer circular truncated cone with a small upper layer and a large lower layer, the outer diameter of the upper-layer circular truncated cone of the positioning mandrel is matched with the inner diameter of the valve sleeve, and the positioning mandrel and the opening pressing plate clamp the valve sleeve in the vertical direction; the horizontal clamping mechanism comprises a side positioning support and a second hydraulic cylinder which are installed on the top face of the upper base, the side positioning support and the second hydraulic cylinder are located on the two sides of the positioning mandrel respectively, the output end of the second hydraulic cylinder is connected with a pressing nail, and the pressing end of the side positioning support is matched with the side face flat plate of the valve sleeve in shape.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a hydraulic fixture for valve sleeve parts. Background Art

[0002] Auto parts are different. Some auto valve sleeve parts have complex shapes and high precision requirements. When processing with high tool speed and high cutting force, traditional hydraulic clamps have insufficient support around them, unstable clamping, easy shaking of parts, and easy vibration of tools, which leads to unstable processing size of parts and even unqualified parts, seriously affecting tool life and part quality. Therefore, this ordinary positioning and clamping method cannot really guarantee the precision requirements of parts, especially for large-scale processing of such valve sleeve parts. This positioning and clamping method is even more unreliable, resulting in low processing efficiency and quality. Summary of the invention

[0003] Aiming at the shortcomings of existing hydraulic clamps for valve sleeve parts that are unstable in clamping, resulting in low processing efficiency and quality, the utility model provides a hydraulic clamp for valve sleeve parts, which has stable clamping, high processing efficiency and quality.

[0004] A hydraulic clamp for valve sleeve parts, comprising an upper base and a lower base, characterized in that: it also comprises a vertical clamping mechanism and a horizontal clamping mechanism, the vertical clamping mechanism comprises a first hydraulic cylinder installed in the lower base, the output end of the first hydraulic cylinder is connected to a locking shaft, the locking shaft passes through the upper base and the positioning mandrel upward, a shaft cap is provided at the top of the locking shaft, an open pressure plate is sleeved under the shaft cap, the positioning mandrel is installed on the upper base, the positioning mandrel is a double-layered truncated cone with a small upper layer and a large lower layer, and the positioning mandrel is provided with a plurality of truncated cones, wherein ... The outer diameter of the upper frustum of the positioning core shaft matches the inner diameter of the valve sleeve, and the positioning core shaft and the opening pressure plate constitute a clamping of the valve sleeve in the vertical direction; the horizontal clamping mechanism includes a side positioning bracket installed on the top surface of the upper base and a second hydraulic cylinder, and the side positioning bracket and the second hydraulic cylinder are respectively located on both sides of the positioning core shaft, and the output end of the second hydraulic cylinder is connected to a pressing pin, and the pressing end of the side positioning bracket matches the side flat plate shape of the valve sleeve, and the pressing pin and the clamping end of the side positioning bracket constitute a clamping of the valve sleeve in the horizontal direction.

[0005] It is further characterized by:

[0006] The two adjacent side surfaces of the top of the lower base are respectively installed with adjustment pad brackets, the top of the adjustment pad bracket is higher than the lower base, and the adjustment pads are respectively pressed between the part of the adjustment pad bracket higher than the lower base and the two adjacent side surfaces of the upper base;

[0007] A positioning groove is provided in the middle of the locking shaft, and a positioning pin hole is provided on the side of the lower frustum of the positioning core shaft. The positioning groove and the positioning pin hole are located in corresponding positions, and positioning pins are installed through the positioning groove and the positioning pin hole.

[0008] In the above structure of the utility model, the valve sleeve parts are mounted on the positioning core shaft, and one side of the side plate of the valve sleeve is pressed against the clamping end of the side positioning bracket to realize the positioning of the parts. The positioning core shaft cooperates with the shape of the valve sleeve to play a supporting role and provide sufficient and uniform supporting force, which can effectively prevent the knife from vibrating, stabilize the clamping, and ensure the processing quality of the parts. The positioning core shaft and the open pressure plate constitute the clamping of the valve sleeve in the vertical direction, and the pressure pins and the clamping end of the side positioning bracket constitute the clamping of the valve sleeve in the horizontal direction, which realizes the clamping of the valve sleeve parts in both vertical and horizontal directions, ensures the clamping stability, and thus improves the processing efficiency and processing quality. The setting of the adjustment pad and the positioning pin can realize the fine adjustment of the positioning position of the valve sleeve parts, ensure the accurate positioning of the valve sleeve, and further improve the clamping stability and processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the main view of the utility model;

[0010] Figure 2 It is a schematic diagram of the utility model from a top view;

[0011] Figure 3 It is a schematic diagram of the utility model from the left side;

[0012] Figure 4 It is a schematic diagram of the rear view of the utility model;

[0013] Figure 5 for Figure 1 A schematic diagram of the AA section view;

[0014] Figure 6 It is a schematic diagram of the utility model from the left side;

[0015] Figure 7 It is a schematic diagram of the clamping state of the shaft sleeve of the utility model;

[0016] Figure 8 Schematic diagram of the structure of the valve sleeve. DETAILED DESCRIPTION

[0017] See Figures 1 to 8A hydraulic clamp for valve sleeve parts, comprising an upper base 2 and a lower base 1, and further comprising a vertical clamping mechanism and a horizontal clamping mechanism. The vertical clamping mechanism comprises a first hydraulic cylinder 15 installed in the lower base 1, and the output end of the first hydraulic cylinder 15 is connected to a locking shaft 8, and the locking shaft 8 passes upward through the upper base 2 and the positioning mandrel 4. A shaft cap 9 is provided at the top of the locking shaft 8, and an open pressing plate 5 is provided under the shaft cap of the locking shaft 8. The positioning mandrel 4 is installed on the upper base 2, and the positioning mandrel 4 is a double-layer truncated cone with a small upper layer and a large lower layer. The upper layer of the positioning mandrel 4 is provided with a shaft cap 9, and the locking shaft 8 is provided with an open pressing plate 5 under the shaft cap. The positioning mandrel 4 is installed on the upper base 2. The positioning mandrel 4 is a double-layer truncated cone with a small upper layer and a large lower layer. The outer diameter of the layer cone matches the inner diameter of the valve sleeve 16, and the positioning core shaft 4 and the open pressure plate 5 constitute a clamp for the valve sleeve 16 in the vertical direction; the horizontal clamping mechanism includes a side positioning bracket 3 and a second hydraulic cylinder 6 installed on the top surface of the upper base 2, and the side positioning bracket 3 and the second hydraulic cylinder 6 are respectively located on both sides of the positioning core shaft 4, and the output end of the second hydraulic cylinder 6 is connected to the pressing pin 7, and the pressing end of the side positioning bracket 3 matches the shape of the side plate 161 of the valve sleeve 16, and the pressing pin 7 and the clamping end of the side positioning bracket 3 constitute a clamp for the valve sleeve 16 in the horizontal direction.

[0018] See Figure 2 , Figure 4 The two adjacent side surfaces of the top of the lower base 1 are respectively installed with adjustment pads 10, the top of the adjustment pad 10 is higher than the lower base 1, and the adjustment pads 11 are respectively pressed between the part of the adjustment pad 10 higher than the lower base 1 and the two adjacent side surfaces of the upper base 2;

[0019] See Figure 5 A positioning groove 13 is provided in the middle of the locking shaft 8, and a positioning pin hole 14 is provided on the side of the lower truncated cone of the positioning mandrel 4. The positioning groove 13 and the positioning pin hole 14 correspond to each other in position, and a positioning pin 12 is installed through the positioning groove 13 and the positioning pin hole.

[0020] The working process of the utility model is as follows:

[0021] The valve sleeve 16 is mounted on the positioning core shaft 4, so that one side of the side plate 161 of the valve sleeve 16 is close to the side positioning bracket 3. If the side plate 161 of the valve sleeve 16 cannot be close to the side positioning bracket 3, the adjustment pad 11 of different thicknesses is replaced, and the position of the upper base 2 is adjusted to drive the positioning core shaft 4 to move until one side of the side plate 161 of the valve sleeve 16 can be close to the side positioning bracket 3. Then the positioning pin 12 is inserted into the positioning pin hole 14 and the positioning groove 13 to fix the position of the positioning core shaft 4 to complete the positioning. Then the opening pressure plate 5 is mounted on the top of the locking shaft 8, and the switch is turned on. The first hydraulic cylinder 15 drives the locking shaft 8 to move down, and the locking shaft 8 drives the opening pressure plate 5 to move down, press the top surface of the valve sleeve 16, and complete the clamping of the valve sleeve 16 in the vertical direction; the second hydraulic cylinder 6 drives the pressure pin 7 to extend, and the pressing end of the pressure pin 7 presses the other side of the side plate 161 of the valve sleeve 16 to complete the clamping of the valve sleeve 16 in the horizontal direction, and complete the clamping of the valve sleeve 16. Then the processing of the valve sleeve 16 begins. After the processing is completed, the switch is turned off, and the first hydraulic cylinder 15 drives the locking shaft 8 to extend upward, driving the opening pressure plate 5 to separate upward from the valve sleeve 16. The second hydraulic cylinder 6 retracts and drives the pressure pin 7 to retract and separate from the valve sleeve 16. At this time, the valve sleeve 16 can be removed.

Claims

1. A hydraulic clamp for valve sleeve parts, comprising an upper base and a lower base, characterized in that: It also includes a vertical clamping mechanism and a horizontal clamping mechanism, the vertical clamping mechanism includes a first hydraulic cylinder installed in the lower base, the output end of the first hydraulic cylinder is connected to the locking shaft, the locking shaft passes through the upper base and the positioning core shaft upward, a shaft cap is provided at the top end of the locking shaft, and an open pressure plate is sleeved under the shaft cap, the positioning core shaft is installed on the upper base, the positioning core shaft is a double-layer truncated cone with a small upper layer and a large lower layer, the outer diameter of the upper truncated cone of the positioning core shaft matches the inner diameter of the valve sleeve, and the positioning core shaft and the open pressure plate constitute a clamping of the valve sleeve in the vertical direction; the horizontal clamping mechanism includes a side positioning bracket and a second hydraulic cylinder installed on the top surface of the upper base, the side positioning bracket and the second hydraulic cylinder are respectively located on both sides of the positioning core shaft, the output end of the second hydraulic cylinder is connected to a pressing nail, the pressing end of the side positioning bracket matches the side flat plate shape of the valve sleeve, and the pressing nail and the clamping end of the side positioning bracket constitute a clamping of the valve sleeve in the horizontal direction.

2. The hydraulic clamp for valve sleeve parts according to claim 1, characterized in that: Adjustment pad brackets are respectively installed on two adjacent side surfaces of the top of the lower base, the top of the adjustment pad bracket is higher than the lower base, and adjustment pads are respectively pressed between the part of the adjustment pad bracket higher than the lower base and the two adjacent side surfaces of the upper base.

3. A hydraulic clamp for valve sleeve parts according to claim 1 or 2, characterized in that: A positioning groove is provided in the middle of the locking shaft, and a positioning pin hole is provided on the side of the lower frustum of the positioning core shaft. The positioning groove and the positioning pin hole are located in corresponding positions, and positioning pins are installed through the positioning groove and the positioning pin hole.

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