Hydraulic clamp for end cover type parts

Abstract

The utility model provides a kind of hydraulic fixture for end cover class parts, it is positioned to end cover by locating column cooperation end cover on opening counterbore, end cover is positioned by dowel, after placing the counterbore on end cover on locating column, end cover side wall is pushed and is tightly positioned dowel, the quick positioning of end cover is realized;Then by pressing plate from above tight end cover, because the structure of counterbore is relatively strong, press plate is set in the position above counterbore, ensure that end cover can be tightly pressed and not damage parts, ensure positioning stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to tooling fixture technical field, concretely is a hydraulic fixture for end cover class parts. BACKGROUND

[0002] As Figure 1 As shown in the figure, it is end cover a of the part to be processed, and the end cover a comprises: a shell a1 in the shape of a Chinese character, six counterbores a2 are formed on the edge part around the shell a1, the shape of the counterbores a2 is a semicircle or a quarter of a circular sector, and a2' is a process through hole corresponding to the bottom of the counterbores a2. The bottom of the shell a1 is a thin-walled structure, and a through hole a3 is also formed. When the end cover is processed, if it is fixed and clamped by a manual clamp, the stability of the processing positioning cannot be met, the clamping steps are complicated, and the efficiency is low. Moreover, manual clamping is prone to operation errors, causing unbalanced clamping force, which may lead to problems such as part processing hole deviation or size processing out-of-tolerance. SUMMARY

[0003] In order to solve the problems of low efficiency, poor stability and unbalanced clamping force caused by operation errors when positioning the end cover part based on manual clamping tools, the utility model provides a hydraulic clamp for end cover class parts, which can realize stable processing of parts, improve clamping efficiency, and has good positioning stability, so that the parts are evenly stressed.

[0004] The structure of the utility model is as follows: a hydraulic clamp for end cover class parts, comprising: a positioning structure and a clamping structure, characterized by: the positioning structure comprises: a positioning pin and a positioning column, the positioning pin is horizontally arranged along the outside position of the edge of the end cover, and the positioning column is vertically arranged at the position corresponding to the counterbore;

[0005] The clamping structure comprises: an up-down direction clamping structure and a horizontal direction clamping structure, the up-down direction clamping structure comprises: a pressing plate and a pressing driving structure, the pressing plate is pressed from above based on the pressing driving structure; the horizontal direction clamping structure comprises: a horizontally arranged push block and a horizontal driving structure, under the action of the horizontal driving structure, the push block is tightly pressed from the horizontal direction to the end cover;

[0006] The pressing plate is arranged above the counterbore of the end cover;

[0007] The number of the positioning pin, the positioning column, the push block and the pressing plate is greater than 1;

[0008] The push block and the positioning pin are not arranged intersecting each other.

[0009] Further features are as follows:

[0010] The positioning column is arranged in three, each corresponding to a position below a counterbore, and the two positioning columns are spaced apart by a counterbore;

[0011] The pressing plate is arranged in four, each corresponding to a position above a counterbore; the four pressing plates are divided into two groups, two adjacent in each group, and not adjacent between the two groups;

[0012] The pressing driving structure is based on a lever type oil cylinder; the pressing plate comprises a U-shaped head part, and the inner diameter of the U-shaped head part is greater than the diameter of the process through hole at the bottom of the end cover;

[0013] It also comprises an auxiliary support structure, which comprises a support cylinder connecting pin, a support cylinder and a support cylinder base, the support cylinder is vertically arranged above the support cylinder base, and the support cylinder connecting pin is arranged at the output end of the support cylinder;

[0014] The auxiliary support structure is arranged at a position below the counterbore;

[0015] The auxiliary support structure is arranged at a position below the pressing plate;

[0016] The horizontal direction clamping structure further comprises a single-acting cylinder base, a support block and a connecting rod, the support block is horizontally arranged on the single-acting cylinder base, a sliding groove is formed in the upper end surface of the support block, and the push block is slidingly installed in the sliding groove; the horizontal driving structure is arranged above the support block, and the output end of the horizontal driving structure is connected to the push block through the horizontally arranged connecting rod;

[0017] The push block is a cross-shaped structure, the vertical rod part of the cross-shaped structure is slidingly installed in the sliding groove, the horizontal rods protruding from the two ends of the vertical rod are limiting clamping blocks, the widths of the two horizontal rods are greater than the width of the sliding groove, and the front end of the vertical rod located outside the sliding groove is a pushing head.

[0018] The hydraulic clamp for end cover parts provided by the utility model positions the end cover through the positioning column and the counterbore formed on the end cover, positions the outer sidewall of the end cover through the positioning pin, places the counterbore on the end cover on the positioning column, pushes and tightly positions the positioning pin on the sidewall of the end cover, realizes the quick positioning of the end cover, then presses the end cover from above through the pressing plate, because the structure where the counterbore is located has relatively strong pressure resistance, the pressing plate is arranged at a position above the counterbore, so that the end cover can be pressed tightly and the part is not damaged, and the positioning stability is ensured. The number of the positioning pin, the positioning column, the push block and the pressing plate is greater than one, so that the end cover can be balanced in the process of positioning and clamping, and the positioning stability is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the end cover to be machined;

[0020] Figure 2 This is a schematic diagram of the overall structure of the end cap and the hydraulic clamp of this application;

[0021] Figure 3 This is a schematic diagram of the hydraulic clamp structure from the front view of this application;

[0022] Figure 4 This is a top view of the hydraulic clamp of this application.

[0023] Figure 5 This is a three-dimensional structural diagram of the hydraulic clamp of this application;

[0024] Figure 6 for Figure 3 A schematic diagram of the cross-section of the structure from the AA viewpoint;

[0025] Figure 7 for Figure 6 A magnified structural diagram of section B.

[0026] In the diagram, 1-base plate, 2-single-acting cylinder base, 3-support block, 31-sliding groove, 4-connecting rod, 5-limiting block, 6-push block, 61-vertical rod, 62-horizontal rod, 63-push head, 7-pressure plate, 8-single-acting cylinder, 9-pad block, 10-lever-type hydraulic cylinder, 11-first pad, 12-positioning pin, 13-positioning column, 14-positioning block, 15-second pad, 16-oil distribution block, 17-connecting block, 18-support cylinder connecting pin, 19-support cylinder, 20-support cylinder base. Detailed Implementation

[0027] like Figures 2-7 As shown, this utility model includes a hydraulic clamp for end cap parts, comprising: a base plate 1 and a positioning structure, a clamping structure, and an auxiliary support structure disposed on the base plate 1. The positioning structure enables the end cap to achieve self-positioning; the clamping structure then positions and clamps the part in multiple directions, while the auxiliary support structure provides auxiliary positioning for the part, ensuring machining accuracy.

[0028] The positioning structure includes a positioning pin 12 and a positioning post 13. The positioning pin 12 is horizontally positioned along the outer edge of the end cap via a positioning block 14, and the positioning post 13 is vertically positioned below the countersunk hole a2. Three positioning posts 13 are used, each corresponding to a position below a countersunk hole a2, with a countersunk hole a2 spaced between each pair of positioning posts 13. This ensures even support for the end cap a and more precise positioning of the end cap.

[0029] The clamping structure comprises: an up-down direction clamping structure and a horizontal direction clamping structure, the up-down direction clamping structure comprises: a pressing plate 7 and a pressing driving structure, the pressing plate 7 is pressed from above the end cover based on the pressing driving structure; the horizontal direction clamping structure comprises: a horizontally arranged push block 6 and a horizontal driving structure, under the action of the horizontal driving structure, the push block 6 is tightly pressed from the outside of the end cover in the horizontal direction; the pressing plate 7 is arranged at a position above the counterbore a2 of the end cover. The pressing plate 7 is arranged as four, each pressing plate 7 corresponds to a position above the counterbore a2; the four pressing plates 7 are divided into two groups, the counterbores are spaced between the two groups, and the two pressing plates in each group are arranged adjacently to ensure that uniform and stable pressure can be provided to the end cover.

[0030] The push block 6 and the positioning pin 12 are not arranged to intersect each other, so as to ensure that the pushing force of the push block 6 applied to the end cover a and the supporting force of the positioning pin 12 to the end cover are not offset to each other, and the end cover a can be tightly pressed and positioned from the horizontal direction through the cooperation of the push block 6 and the positioning pin 12.

[0031] The auxiliary supporting structure comprises: a supporting cylinder connecting pin 18, a supporting cylinder 19 and a supporting cylinder base 20, the supporting cylinder 19 is vertically arranged above the supporting cylinder base 20, and the supporting cylinder connecting pin 18 is arranged at the output end of the supporting cylinder 19; the auxiliary supporting structure is arranged at a position below the counterbore a2, that is, the top end diameter of the supporting cylinder connecting pin 18 is smaller than the inner diameter of the counterbore a2. The auxiliary supporting structure is arranged at a position below the pressing plate 7.

[0032] As shown in Figure 4 The number of the supporting cylinder connecting pin 18, the positioning pin 12, the positioning column 13, the push block 6 and the pressing plate 7 is greater than one; in the embodiment, the supporting cylinder connecting pin 18 is arranged as two, the positioning pin 12 is arranged as three, the positioning column 13 is arranged as three, the push block 6 is arranged as three, and the pressing plate 7 is arranged as four.

[0033] Among them, the two supporting cylinder connecting pins 18 and the three positioning columns 13 correspond to one counterbore a2 respectively, and the four pressing plates 7 are arranged above the four counterbores of the five counterbores a2 with supports, so as to ensure that the pressing plate 7 can be cooperated with the lower supporting member to tightly press the end cover more stably.

[0034] The pressing driving structure is realized based on the lever type oil cylinder 10; the output end of the lever type oil cylinder 10 is connected with the tail end of the Y-shaped pressing plate 7, so as to drive the pressing plate 7 to realize the opening and closing in the up-down direction. The specific connection mode is realized based on the prior art.

[0035] The pressing head part of the pressing plate 7 is a U-shaped structure, the inner diameter of the U-shaped structure is greater than the diameter of the process through hole a2' of the bottom of the end cover; when the lever type oil cylinder 10 drives the pressing plate 7 to press the end cover 2 downward, the U-shaped pressing head just surrounds the outer circumference of the process through hole a2', so as to ensure that the pressure can be uniformly applied to the outer circumference of the process through hole a2', and the end cover a can be tightly pressed without affecting the machining of the end cover a.

[0036] As Figure 7 shown, the horizontal direction clamping structure further comprises a single-acting cylinder base 2, a support block 3 and a connecting rod 4, the support block 3 is horizontally arranged on the single-acting cylinder base 2, a horizontal sliding groove 31 is formed on the upper end surface of the support block 3, and a push block 6 is slidingly installed in the sliding groove 31; a horizontal driving structure is arranged above the support block 3, and the horizontal driving structure is realized based on a single-acting cylinder 8, and the output end of the single-acting cylinder 8 is connected with a vertical rod 61 of the push block 6 through the horizontally arranged connecting rod 4.

[0037] Specifically, the push block 6 is a cross-shaped structure, the vertical rod 61 of the cross-shaped structure is slidingly installed in the sliding groove 31, the two ends of the horizontal rod 62 extending out are limiting blocks, the width of the two horizontal rods 62 is greater than the width of the sliding groove 31, when the single-acting cylinder 8 retracts the output end, the horizontal rod 62 limits the retraction position of the push block 6 in the sliding groove 31, and the front end of the vertical rod 61 is located at a position outside the sliding groove 31 and is a pushing head 63. The limiting block is arranged above the sliding groove 31 to ensure that the push block 6 will not fall off from above the sliding groove 31. When the end cover needs to be clamped, the single-acting cylinder 8 is started, the push block 6 is driven to slide in the sliding groove 31 through the connecting rod 4, and the end cover side wall is clamped.

[0038] When the clamp of the application clamps the end cover, the end cover a is placed on the clamp in the way that the counterbores a2 are downward, the end faces of the three counterbores in the six counterbores a2 of the bottom of the end cover a are tightly attached to the top end faces of the three positioning columns 3, and the outer wall of the end cover is tightly attached to the three positioning pins 12, so that the positioning of the part is quickly completed.

[0039] The machine tool start key is pressed, the oil way starts to supply oil, the four lever type oil cylinders 10 clamp the end cover in the Z direction through the pressing plate 7, the three single-acting cylinders 8 push the three push blocks 6 to clamp the end cover in the X and Y directions. Finally, the two supporting cylinders 19 at the bottom realize the auxiliary supporting effect on the part.

[0040] The clamp adopting the scheme realizes the positioning and clamping of the part, improves the stability of clamping and the accuracy of positioning, avoids the errors in part positioning, clamping and machining, improves the repeatability and reproducibility of part machining, ensures the clamping speed, and improves the machining efficiency and machining quality of the part.

Claims

1. A hydraulic clamp for end cap-type parts, comprising: The positioning structure and clamping structure are characterized in that: the positioning structure includes: a positioning pin and a positioning post, wherein the positioning pin is horizontally disposed along the outer edge of the end cap, and the positioning post is vertically disposed at the position corresponding to the countersunk hole; The clamping structure includes a vertical clamping structure and a horizontal clamping structure. The vertical clamping structure includes a pressure plate and a clamping drive structure. The pressure plate clamps the end cap from above based on the clamping drive structure. The horizontal clamping structure includes a horizontally arranged push block and a horizontal drive structure. Under the action of the horizontal drive structure, the push block presses the end cap from the horizontal direction. The pressure plate is positioned above the countersunk hole of the end cap; The number of the positioning pin, the positioning column, the push block and the pressure plate is greater than one; The push block and the positioning pin are not arranged to overlap each other.

2. The hydraulic clamp for end cap parts according to claim 1, characterized in that: The positioning posts are set to 3, each positioning post corresponding to a position below a countersunk hole, and there is a countersunk hole between two positioning posts.

3. The hydraulic clamp for end cap parts according to claim 1, characterized in that: The pressure plates are set to 4, each pressure plate corresponding to the position above a countersunk hole; the four pressure plates are divided into two groups, with two pressure plates in each group arranged adjacent to each other, and the two groups are not adjacent to each other.

4. The hydraulic clamp for end cap parts according to claim 1, characterized in that: The clamping drive structure is based on a lever-type hydraulic cylinder; the pressure plate includes a U-shaped pressure head, the inner diameter of which is larger than the diameter of the process through hole at the bottom of the end cap.

5. The hydraulic clamp for end cap parts according to claim 1, characterized in that: It also includes: an auxiliary support structure, which includes: a support cylinder connecting pin, a support cylinder and a support cylinder base, wherein the support cylinder is vertically disposed above the support cylinder base and the support cylinder connecting pin is disposed at the output end of the support cylinder; The auxiliary support structure is located below the countersunk hole.

6. The hydraulic clamp for end cap parts according to claim 5, characterized in that: The auxiliary support structure is located below the pressure plate.

7. The hydraulic clamp for end cap parts according to claim 5, characterized in that: The horizontal clamping structure further includes: a single-acting cylinder base, a support block, and a connecting rod. The support block is horizontally disposed on the single-acting cylinder base, and a sliding groove is formed on the upper end face of the support block. The push block is slidably installed in the sliding groove. The horizontal drive structure is disposed above the support block, and the output end of the horizontal drive structure is connected to the push block through the horizontally disposed connecting rod. The push block has a cross-shaped structure. The vertical rod of the cross shape is slidably installed in the sliding groove. The horizontal bars extending from both ends of the vertical rod are limiting blocks. The width of the two horizontal bars is greater than the width of the sliding groove. The part of the front end of the vertical rod located outside the sliding groove is the push head.

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