Veneering follow-up hydraulic vice

Abstract

The utility model discloses a veneering follow-up hydraulic vice. The veneering follow-up hydraulic vice comprises a base and at least one clamping assembly. The clamping assembly is arranged on the base; each clamping assembly comprises a clamp body, an inclined pull rod, a jaw, a workpiece positioning plate, a vertical pull rod, a swing pull-down sleeve and a hydraulic cylinder; a vertical guide groove is formed in the center of the bottom of the clamp body, and inclined guide grooves are formed in the two sides of the top of the clamp body. The swing pull-down sleeve is arranged, the vertical pull rod is sleeved with the swing pull-down sleeve, the swing pull-down sleeve is hinged to the vertical pull rod, and the swing pull-down sleeve can swing back and forth relative to the vertical pull rod, so that the two jaws can swing along with the vertical pull rod; the two jaws can move downwards under the inclined pulling action of the inclined pull rod to force the workpiece to be subjected to center profiling positioning, and meanwhile, the bottom face of the workpiece is attached to the end face of the workpiece positioning plate, so that the purpose of center positioning end face attachment is achieved, high-precision workpiece clamping is achieved, the machined workpiece meets the high-precision requirement, and the quality of the machined workpiece is improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixtures, and in particular to a surface-following hydraulic vise. Background Technology

[0002] A hydraulic vise, also known as a hydraulic chuck or hydraulic collet, is a machine tool accessory that uses hydraulic pressure to clamp workpieces. Its main working principle is that an internal hydraulic cylinder generates pressure, pushing a piston or jaws to move, thereby clamping or releasing the workpiece. During operation, the hydraulic vise is usually connected to the machine tool's hydraulic system, and the magnitude and direction of the hydraulic pressure are adjusted by controlling valves to achieve precise control of the jaws. At the same time, to ensure operational safety and convenience, hydraulic vises are usually equipped with various safety protection devices and indicating devices. In general, the hydraulic vise is a highly efficient, precise, and reliable machine tool accessory, widely used in various machining and assembly processes. Its emergence has not only improved work efficiency and machining accuracy but also reduced the labor intensity and safety risks for operators.

[0003] Current hydraulic vises mainly consist of a base and at least one clamping assembly. This clamping assembly, mounted on the base, comprises two translation blocks, two jaws, a pull-down block, and a hydraulic cylinder. The hydraulic cylinder drives the pull-down block downwards, which in turn moves the two translation blocks horizontally closer together, causing the jaws to move horizontally closer and clamp the workpiece. However, in existing technology, the jaws cannot oscillate accordingly, making it impossible to clamp workpieces with high precision using the workpiece's center and internal cavity shape as contour positioning references. This severely hinders high-precision machining. Therefore, it is necessary to improve current hydraulic vises. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a surface-following hydraulic vise, which can effectively solve the problem that existing hydraulic vises cannot perform high-precision clamping of workpieces with the workpiece center and inner cavity shape as the contour positioning reference.

[0005] The problem of workpieces tilting upwards during clamping.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A face-fitting follow-up hydraulic vise includes a base and at least one clamping assembly. The clamping assembly is disposed on the base. Each clamping assembly includes a vise body, diagonal pull rods, jaws, a workpiece positioning plate, a vertical pull rod, a swing pull sleeve, and a hydraulic cylinder. A vertical guide groove is formed at the center of the bottom of the vise body, and diagonal guide grooves are formed on both sides of the top of the vise body. The two diagonal guide grooves are symmetrically arranged opposite the center of the vertical guide groove and open in an inverted V-shape. Both diagonal guide grooves are connected to the vertical guide groove. There are two diagonal pull rods, which are respectively disposed diagonally up and down in the two diagonal guide grooves. The two diagonal pull rods are opposite each other. The clamps are set up and move obliquely up and down along two inclined guide grooves respectively; there are two jaws, which are symmetrical to each other and fixed to the top of the two inclined pull rods respectively, and a clamping groove is formed between the two jaws; the workpiece positioning plate is set on the top of the clamp body and located in the clamping groove; the vertical pull rod is set in the vertical guide groove and can move vertically up and down; the swinging pull sleeve is fitted outside the vertical pull rod and hinged to the vertical pull rod, and the swinging pull sleeve is set to swing back and forth relative to the vertical pull rod, and the swinging pull sleeve is connected to the two inclined pull rods and drives the two inclined pull rods to move obliquely up and down; the hydraulic cylinder is set in the base and drives the vertical pull rod to move vertically up and down.

[0008] As a preferred embodiment, a first through hole is formed radially through the vertical tie rod, and a second through hole is formed radially through the swing pull sleeve. The second through hole and the first through hole are directly opposite and connected. A pin is inserted into the second through hole and the first through hole, and the swing pull sleeve swings back and forth relative to the vertical tie rod around the pin.

[0009] As a preferred embodiment, the inner side of the inclined pull rod is recessed with a slot, and correspondingly, the outer side of the upper end of the swing pull sleeve is provided with a locking block, which engages with the slot.

[0010] As a preferred embodiment, the diagonal tie rod includes a lower splicing block and an upper splicing block, the upper splicing block being stacked on the lower splicing block and fixedly connected by a first screw, and the bottom edge of the inner side of the upper splicing block and the top edge of the inner side of the lower splicing block forming the aforementioned slot.

[0011] As a preferred embodiment, the top surface of the clamp body is recessed with two inclined cavities, and the two inclined guide grooves are further recessed at the bottom surface of the two inclined cavities. The two jaws are adapted to the two inclined cavities, and the outer wall of each jaw and the inner wall of the inclined cavity are in inclined sliding fit.

[0012] As a preferred embodiment, the inner peripheral sidewall of the concave cavity is provided with a fixing groove, in which a sealing element is fixed, and the sealing element slides and seals with the outer wall of the jaw.

[0013] As a preferred embodiment, the jaws include a jaw base and jaw components. The jaw base is fixed to the top of the inclined pull rod by a second screw, and the jaw components are quickly and easily installed on the jaw base by a third screw. The aforementioned clamping groove is formed between the jaw components of the two jaws.

[0014] As a preferred embodiment, the outer side of the clamp body is provided with a first mounting hole, which is connected to the inclined guide groove. A stroke sensor is installed in the first mounting hole and extends into the inclined guide groove.

[0015] As a preferred embodiment, the outer side of the clamp body is provided with a second mounting hole, which is connected to the inclined guide groove, and a grease fitting is installed in the second mounting hole.

[0016] As a preferred embodiment, the base has a mounting cavity, the hydraulic cylinder is fixed in the mounting cavity, the hydraulic cylinder has a piston rod that extends upward, and the lower end of the vertical pull rod is fixedly connected to the upper end of the piston rod.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0018] By incorporating a swing-down sleeve that fits around and hinges to the vertical tie rod, the swing-down sleeve can swing back and forth relative to the vertical tie rod. This allows the two jaws to swing accordingly. The two jaws move downwards with the diagonal pull of the diagonal tie rod, forcing the workpiece to be centered and its bottom surface to fit against the end face of the workpiece positioning plate. This achieves the purpose of center positioning and end face fitting, enabling high-precision workpiece clamping, ensuring that the processed workpiece meets high-precision requirements, and improving the quality of the processed workpiece.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional assembly diagram of a preferred embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional assembly schematic diagram of a preferred embodiment of the present invention from another angle;

[0022] Figure 3 This is an exploded view of a preferred embodiment of the present invention;

[0023] Figure 4 This is an exploded view from another angle of a preferred embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of a preferred embodiment of the present invention;

[0025] Figure 6 yes Figure 5 An enlarged view of position A in the middle.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 10. Base 11. Main body

[0028] 12. Base plate 13. Oil guide plate

[0029] 131. Pipeline; 14. Gas pipe connector

[0030] 15. Oil pipe fitting 16. Guide sleeve

[0031] 101. Mounting cavity; 102. Recessed hole

[0032] 20. Clamping assembly 21. Grip body

[0033] 211. Vertical guide groove; 212. Angled guide groove

[0034] 213. Inclined concave cavity; 214. Fixing groove

[0035] 215. First mounting hole; 216. Second mounting hole

[0036] 217. Positioning hole; 218. Dust cover

[0037] 22. Diagonal tie rod; 221. Lower splicing block

[0038] 222. Upper splicing block; 223. First screw

[0039] 23. Jaws 231. Jaw base

[0040] 232. Jaw fittings; 233. Second screw

[0041] 234. Third screw; 24. Workpiece positioning plate

[0042] 241. Positioning pin; 242. Fourth screw

[0043] 25. Vertical tie rod; 251. First through hole

[0044] 26. Swinging pull-down sleeve 261. Second through hole

[0045] 262. Block 27. Hydraulic cylinder

[0046] 271. Piston rod; 28. Universal positioner

[0047] 29. Bolts 201. Seals

[0048] 202. Stroke sensor; 203. Grease fitting.

[0049] 204. Card slot; 205. Clip slot

[0050] 206, pin; 30, workpiece. Detailed Implementation

[0051] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a base 10 and at least one clamping component 20.

[0052] The base 10 has a mounting cavity 101, and a recessed hole 102 is provided on the upper surface of the base 10. Specifically, the base 10 includes a main body 11, a base plate 12, and an oil guide plate 13. The mounting cavity 101 is located on the main body 11. One end of the main body 11 is provided with an air pipe connector 14 and an oil pipe connector 15. The base plate 12 is fixed to the bottom of the main body 11 and covers the bottom opening of the mounting cavity 101. The oil guide plate 13 is fixed to the top of the main body 11 and has multiple pipes 131. The air pipe connector 14 and the oil pipe connector 15 are respectively connected to the corresponding pipes 131. The recessed hole 102 is formed by recessing on the upper surface of the oil guide plate 13. In addition, a guide sleeve 16 is provided on the oil guide plate 13, and the guide sleeve 16 is connected to the mounting cavity 101.

[0053] The clamping assembly 20 is mounted on the base 10; each clamping assembly 20 includes a clamp body 21, a diagonal pull rod 22, a jaw 23, a workpiece positioning plate 24, a vertical pull rod 25, a swing pull-down sleeve 26, and a hydraulic cylinder 27. Specifically:

[0054] The clamp body 21 has a vertical guide groove 211 at its bottom center and oblique guide grooves 212 on both sides of its top. The two oblique guide grooves 212 are symmetrically arranged relative to the center of the vertical guide groove 211 and open in an inverted V-shape. Both oblique guide grooves 212 are connected to the vertical guide groove 211. In this embodiment, the top surface of the clamp body 21 has two oblique cavities 213. The two oblique guide grooves 212 are further recessed at the bottom surface of the two oblique cavities 213. Furthermore, the inner circumferential sidewall of the oblique cavity 213 has a fixing groove 214. A sealing element 201 is fixed in the fixing groove 214 to achieve a dustproof seal and prevent external dust from entering the oblique guide grooves 212. Furthermore, the outer side of the clamp body 21 has a first mounting hole 215, which connects to the inclined guide groove 212. A stroke sensor 202 is installed in the first mounting hole 215, extending into the inclined guide groove 212 to detect the position of the inclined pull rod 22. Additionally, the outer side of the clamp body 21 has a second mounting hole 216, which connects to the inclined guide groove 212. A grease nipple 203 is installed in the second mounting hole 216 to add grease to the inclined guide groove 212 for increased lubrication. Furthermore, the top surface of the clamp body 21 has a protruding positioning hole 217, and a dust cover 218 is also provided on the clamp body 21.

[0055] There are two diagonal pull rods 22, which are respectively disposed in two diagonal guide grooves 212 and can move diagonally up and down. The two diagonal pull rods 22 are symmetrically arranged and move diagonally up and down along the two diagonal guide grooves 212. In this embodiment, the inner side of the diagonal pull rod 22 is recessed with a slot 204, and the diagonal pull rod 22 includes a lower splicing block 221 and an upper splicing block 222. The upper splicing block 222 is stacked on the lower splicing block 221 and fixedly connected by a first screw 223. The bottom edge of the inner side of the upper splicing block 222 and the top edge of the inner side of the lower splicing block 221 form the aforementioned slot 204.

[0056] There are two jaws 23, symmetrically arranged and fixed to the tops of the two inclined pull rods 22, with a clamping groove 205 formed between them. In this embodiment, the two jaws 23 are adapted to the two inclined cavities 213, and the outer wall of each jaw 23 and the inner wall of the inclined cavity 213 are in a sliding fit, so that the movement of the jaws 23 is more stable and reliable. The sealing element 201 is in a sliding sealing fit with the outer wall of the jaws 23 to achieve the purpose of dust prevention, effectively preventing dust from entering the vertical guide groove 211 and the inclined guide groove 212. Furthermore, specifically, the jaw 23 includes a jaw base 231 and a jaw member 232. The jaw base 231 is fixed to the top of the inclined pull rod 22 by a second screw 233, and the jaw member 232 is quickly and easily installed on the jaw base 231 by a third screw 234. The aforementioned clamping groove 205 is formed between the jaw members 232 of the two jaws 23, so as to replace the appropriate jaw member 232 according to the size and specifications of the workpiece 30, thereby improving the versatility of the product.

[0057] The workpiece positioning plate 24 is disposed on the top of the clamp body 21 and located in the clamping groove 205. In this embodiment, both ends of the workpiece positioning plate 24 are provided with positioning posts 241. The positioning posts 241 are inserted and positioned in conjunction with the positioning holes 217. The workpiece positioning plate 24 is fixedly connected to the clamp body 21 by a plurality of fourth screws 242.

[0058] The vertical tie rod 25 is vertically movable in the vertical guide groove 211. The vertical tie rod 25 is connected to the two oblique tie rods 22 and drives the two oblique tie rods 22 to move obliquely up and down synchronously. In this embodiment, the vertical tie rod 25 passes through the guide sleeve 16 and moves up and down along the guide sleeve 16. The aforementioned dust cover 218 covers the top of the vertical tie rod 25. A first through hole 251 is formed radially through the vertical tie rod 25.

[0059] The swing pull-down sleeve 26 is fitted over the vertical pull rod 25 and hinged to it. The swing pull-down sleeve 26 is oscillating back and forth relative to the vertical pull rod 25. It connects to two oblique pull rods 22 and drives them to move obliquely up and down. In this embodiment, a second through hole 261 is formed radially through the swing pull-down sleeve 26. This second through hole 261 and the first through hole 251 are directly opposite and connected. A pin 206 is inserted into the second through hole 261 and the first through hole 251. The swing pull-down sleeve 26 oscillates back and forth relative to the vertical pull rod 25 around the pin 206. Furthermore, a locking block 262 protrudes outward from the outer surface of the upper end of the swing pull-down sleeve 26. Two locking blocks 262 are symmetrically arranged in a mirror image, and they engage with the locking groove 204.

[0060] The hydraulic cylinder 27 is disposed within the base 10 and drives the vertical tie rod 25 to move vertically up and down. In this embodiment, the hydraulic cylinder 27 is connected to the corresponding pipeline 131 on the oil guide plate 13. The hydraulic cylinder 27 is fixed in the mounting cavity 101. The hydraulic cylinder 27 has a piston rod 271 that extends upward. The lower end of the vertical tie rod 25 is fixedly connected to the upper end of the piston rod 271.

[0061] Furthermore, a return spring (not shown in the figure) is embedded in the recess 102. The return spring abuts against the bottom of the inclined pull rod 22 and causes the inclined pull rod 22 to move obliquely upward to return to its original position, so that the inclined pull rod 22 can return to its original position quickly and accurately, thus improving efficiency.

[0062] In addition, a universal positioner 28 is provided on the clamp body 21. The universal positioner 28 is located on the outer side of one end of the clamping groove 205. The universal positioner 28 is used to accurately position the workpiece 30.

[0063] The clamping assembly 20 is detachably and can be adjusted in installation direction on the base 10. Specifically, the clamp body 21 is detachably connected to the base 10 by multiple bolts 29. The jaws 23 are arranged symmetrically on the left and right to clamp and fix the workpiece 30. There are two clamping assemblies 20 arranged on the left and right. The two clamping assemblies 20 are separated on the left and right and fixed on the base 10 to achieve dual-station clamping. This allows the product to clamp two workpieces 30 at the same time without limitation.

[0064] The working principle of this embodiment is described in detail below:

[0065] First, the workpiece 30 is placed on the workpiece positioning plate 24. Since the swing pull sleeve 26 can swing back and forth, the two oblique pull rods 22 can swing back and forth with the swing pull sleeve 26, which in turn makes the two jaws 23 swing back and forth. Since the two jaws 23 can swing with the movement, when the left jaw 23 touches the side of the workpiece 30, the left jaw 23 stops moving. When the right jaw 23 touches the workpiece 30, the left and right jaws 23 will move downward with the oblique pull of the oblique pull rod 22, forcing the workpiece 30 to be positioned in the center and the bottom surface of the workpiece positioning plate 24 to fit together, thereby achieving the purpose of center positioning and end surface fitting. Specifically, hydraulic oil enters from the oil pipe joint 15 and enters the hydraulic cylinder 27 through the oil supply hole of the oil guide plate 13, causing the piston rod 271 to move downward and pull the vertical tie rod 25 downward. Since the vertical tie rod 25 and the swing pull sleeve 26 are connected by the pin 206, a seesaw structure is formed. Utilizing the seesaw principle, the jaws 23 on both sides can move left and right like a seesaw.

[0066] The key design feature of this invention is the use of a swing-down sleeve. This sleeve fits around the vertical pull rod and is hinged to it. The swing-down sleeve can swing back and forth relative to the vertical pull rod, allowing the two jaws to swing accordingly. The jaws move downwards with the pull of the diagonal pull rod, forcing the workpiece to be centered and its bottom surface to fit against the end face of the workpiece positioning plate. This achieves the goal of center positioning and end face fitting, enabling high-precision workpiece clamping and ensuring that the processed workpiece meets high-precision requirements, thus improving the quality of the processed workpiece.

[0067] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A veneered hydraulic follow rest vice comprising a base and at least one clamping assembly; the clamping assembly is arranged on the base; characterized in that: Each clamping assembly comprises a jaw body, two oblique pull rods, two jaws, a workpiece positioning plate, a vertical pull rod, a swing lower pull sleeve and a hydraulic cylinder; a vertical guide groove is formed in the center of the bottom of the jaw body, two oblique guide grooves are formed in the top of the jaw body, the two oblique guide grooves are symmetrically arranged with respect to the center of the vertical guide groove and are in the shape of inverted eight, and the two oblique guide grooves are in communication with the vertical guide groove; the two oblique pull rods are obliquely and movably arranged in the two oblique guide grooves, and the two oblique pull rods are symmetrically arranged and obliquely and movably arranged along the two oblique guide grooves; the two jaws are symmetrically arranged and fixed to the top of the two oblique pull rods, and a clamping groove is formed between the two jaws; the workpiece positioning plate is arranged on the top of the jaw body and located in the clamping groove; the vertical pull rod is vertically and movably arranged in the vertical guide groove; the swing lower pull sleeve is sleeved on the vertical pull rod and hinged to the vertical pull rod, and the swing lower pull sleeve is swingably arranged with respect to the vertical pull rod; the swing lower pull sleeve is connected with the two oblique pull rods and drives the two oblique pull rods to obliquely move up and down; and the hydraulic cylinder is arranged in the base and drives the vertical pull rod to vertically move up and down.

2. The veneer following hydraulic vice according to claim 1, characterized in that: A first through hole is formed in the vertical pull rod, a second through hole is formed in the swing lower pull sleeve, the second through hole and the first through hole are in communication, a pin is inserted into the second through hole and the first through hole, and the swing lower pull sleeve swings left and right with respect to the vertical pull rod around the pin.

3. The veneer following hydraulic vice according to claim 1, characterized in that: The inner side of the oblique pull rod is concavely provided with a clamping groove, and correspondingly, the outer side of the upper end of the swing lower pull sleeve is outwardly convexly provided with a clamping block, and the clamping block is in clamping and cooperation with the clamping groove.

4. The veneer following hydraulic vice according to claim 3, characterized in that: The oblique pull rod comprises a lower splicing block and an upper splicing block, the upper splicing block is superimposed on the lower splicing block and is fixedly connected by a first screw, and the inner side of the upper splicing block and the inner side of the lower splicing block form the clamping groove.

5. The veneer following hydraulic vice according to claim 1, characterized in that: The top surface of the jaw body is concavely provided with two inclined surface cavities, the two oblique guide grooves are further concavely formed at the bottom surface of the two inclined surface cavities, the two jaws are matched with the two inclined surface cavities, and the outer wall of each jaw is in inclined surface sliding cooperation with the inner wall of the inclined surface cavity.

6. The veneer follow-up hydraulic vice according to claim 5, characterized in that: The inner circumferential side wall of the inclined surface cavity is concavely provided with a fixing groove, a sealing element is fixed in the fixing groove, and the sealing element is in sliding and sealing cooperation with the outer wall of the jaw.

7. The veneer follow-up hydraulic vice according to claim 1, characterized in that: The jaw comprises a jaw seat and a jaw piece, the jaw seat is fixed on the top of the oblique pull rod by a second screw, and the jaw piece is quickly and replaceably installed and fixed on the jaw seat by a third screw, and the jaw pieces of the two jaws form the clamping groove.

8. The veneer following hydraulic vice according to claim 1, characterized in that: A first installation hole is formed in the outer side of the jaw body, the first installation hole is in communication with the oblique guide groove, a stroke sensor is installed in the first installation hole, and the stroke sensor extends into the oblique guide groove.

9. The veneer follow-up hydraulic vice according to claim 1, characterized in that: A second installation hole is formed in the outer side of the jaw body, the second installation hole is in communication with the oblique guide groove, and a grease nipple is installed in the second installation hole.

10. The veneer following hydraulic vice according to claim 1, characterized in that: The base has an installation cavity, the hydraulic cylinder is fixed in the installation cavity, the hydraulic cylinder has a piston rod, the piston rod extends upward, and the lower end of the vertical pull rod is fixedly connected with the upper end of the piston rod.

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