Tool clamp for rough turning of workpiece surface

Abstract

The utility model discloses a work fixture for rough turning of the surface of a workpiece, which comprises a base, the upper surface of the base is provided with a movable jaw, one side of the movable jaw is provided with a fixed jaw, the fixed jaw is fixedly connected with the contact surface of the base, and the center of the other surface of the movable jaw is rotatably connected with a lead screw. According to the tool clamp for rough turning machining of the surface of the workpiece, through cooperation of the base, the fixed jaw, the movable jaw, the lead screw, a supporting block, a sliding block, a groove, a return spring and a reinforcement assembly, an operator applies force to rotate a screw rod, an abutting rod abuts against the sliding block to limit the sliding block, at the moment, the lead screw is rotated in the same direction twice, and then the workpiece is subjected to rough turning machining; the sliding blocks and the fixed jaw fully abut against the irregular workpiece to complete clamping operation, the abutting acting force of the multiple sliding blocks and the irregular surface of the workpiece is far larger than the acting force of the return spring, the phenomenon that the abutting acting force between the local sliding blocks and the workpiece is small is avoided, and the stability of the clamped workpiece is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a tooling fixture used for rough turning of a workpiece surface. Background Art

[0002] The workpiece refers to the processing object in the machining process. It can be a single part or a combination of several parts fixed together. There are various types of workpiece processing methods, including turning, milling, planing, grinding, casting, forging, etc. The processing procedures of the workpiece also change with the change of the processing method; tooling refers to process equipment, which is the general term for various tools used in the manufacturing process. In order to facilitate rough turning of the workpiece surface, it is necessary to use a tooling fixture to clamp the workpiece. However, in the existing technology, most tooling fixtures can only clamp workpieces with regular shapes. When the workpiece is rough turned, most of the workpieces are irregularly shaped blanks. This results in the traditional tooling fixture not being able to clamp the workpiece well, thereby affecting the effect of the rough turning of the workpiece.

[0003] In order to improve the above-mentioned disadvantages, the utility model patent with application number 202322635512.2 in the public technology discloses a tool for rough turning of the workpiece surface, including a fixture body and a correction component; wherein, the fixture body includes a base, a fixed jaw and a movable jaw; the fixed jaw is fixed on the base, and the movable jaw is slidably arranged on the base, which has the advantage of being able to automatically correct and clamp irregular workpieces.

[0004] However, during actual use of the tooling, after clamping the irregular surface of the workpiece, the force between the sliding block that presses against the workpiece to clamp it and the workpiece is equal to the force of compression and rebound of the return spring. The compression degrees of multiple return springs are different, and it is easy for the local pressing force between the sliding block and the workpiece to be small. The stability of the workpiece after clamping needs to be strengthened. Utility Model Content

[0005] The purpose of the present utility model is to provide a fixture for rough turning of workpiece surfaces, so as to solve the problem raised in the above-mentioned background technology that when the fixture is actually used, after clamping the irregular workpiece surface, the force between the sliding block that presses against the workpiece to clamp the workpiece is equal to the force of compression and rebound of the return spring, and the compression degrees of multiple return springs are different, which easily leads to a small pressing force between the local sliding block and the workpiece, and the stability of the workpiece after clamping needs to be improved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for rough turning of a workpiece surface, comprising a base, wherein the upper surface of the base is provided with a movable jaw, a fixed jaw is provided on one side of the movable jaw, the fixed jaw is fixedly connected to the contact surface of the base, a screw is rotatably connected to the center of the other side of the movable jaw, the outer wall of the screw is threadedly connected to the base, two support blocks are sequentially provided on one side surface of the movable jaw from front to back, two sliding blocks are sequentially inserted into one side surface of the support block from front to back, and the sliding blocks are connected through grooves. The cam is connected to the supporting block by plugging, and the inner end of the sliding block is fixedly connected with a return spring, and the other end of the return spring is fixedly connected to the deep end of the groove. A force-enhancing component is provided at the upper end of the supporting block, and the force-enhancing component includes a screw, a sleeve, a protrusion, a push rod and a transverse groove. The screw is rotatably connected to one end of the upper surface of the sliding block, and the outer wall of the screw is threadedly connected with a sleeve. The front and rear ends of the outer wall of the sleeve are fixed with protrusions, and the other end of the protrusion is fixed with a push rod, and the push rod is plugged into the sliding block through a transverse groove, and the transverse groove is connected to the interior of the groove.

[0007] Preferably, an anti-slip sheet is fixed to the end of the support rod facing the sliding block.

[0008] Preferably, a transmission assembly is provided on the outside of the two screw rods, and the transmission assembly includes a first groove wheel, a second groove wheel, a belt, a rotating rod, a knob and a shell. The first groove wheel is concentrically fixed to the end of the screw rod away from the support block. A second groove wheel is provided between the two first groove wheels. The second groove wheel is rotatably connected to the first groove wheel through a belt. The inner wall of the second groove wheel is fixedly connected to the rotating rod. The outer wall of the rotating rod is rotatably connected to the shell. The shell is fixedly connected to the contact surface of the support block. The outer end of the rotating rod is fixedly connected to the knob

[0009] Preferably, a sliding rod is provided on the inner wall of the support rod, and the sliding rod is fixedly connected to the inner wall of the shell.

[0010] Preferably, the center points of the knob, the rotating rod and the second groove wheel are all located on the same horizontal vertical line.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the fixture for rough turning of workpiece surface has the following advantages over the traditional technology:

[0012] The movable jaw is moved toward the irregular workpiece by the cooperation between the base, the fixed jaw, the movable jaw, the lead screw, the support block, the sliding block, the groove, the return spring and the force-enhancing component. When the device provided by the utility model needs to be used to clamp an irregular workpiece, first, the irregular workpiece is placed between the fixed jaw and the movable jaw on the upper surface of the base, so that the irregular surface of the workpiece faces the movable jaw, and the lead screw is rotated to move the movable jaw toward the irregular workpiece. After the plurality of sliding blocks are in contact with the irregular surface of the workpiece, the rotation of the lead screw is temporarily stopped. At this time, the operator applies force to rotate the screw. Due to the threaded connection relationship between the screw and the sleeve and the inability of the sleeve to rotate, the two push rods can slide inside the transverse groove, and the push rods press against the sliding block to limit it. At this time, the lead screw is rotated in the same direction for the second time, so that the sliding block and the fixed jaw are fully pressed against the irregular workpiece to complete the clamping operation. The pressing force of the plurality of sliding blocks on the irregular surface of the workpiece is much greater than the force of the return spring, and there is no local small pressing force between the sliding block and the workpiece, and the stability of the workpiece after clamping is enhanced.

[0013] Through the cooperation among the base, fixed jaws, movable jaws, lead screw, support block, sliding block, groove, return spring, force amplification assembly and transmission assembly, the operator applies force to the knob to rotate the rotating rod and the second groove wheel. The two first groove wheels and the two screw rods can be rotated at the same time through the transmission of the belt. The operator can realize whether multiple rods are tightly pressed against multiple sliding blocks by turning a single knob, which can provide convenience for the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of

[0017] Figure 3 for Figure 2 A side sectional view of

[0018] Figure 4 for Figure 3 A partial enlarged view of

[0019] Figure 5 for Figure 2 Cross-section of the support block and movable block.

[0020] In the figure: 1. base, 2. fixed jaw, 3. movable jaw, 4. screw, 5. support block, 6. sliding block, 7. groove, 8. return spring, 9. screw, 10. sleeve, 11. bump, 12. push rod, 13. transverse groove, 14. anti-slip sheet, 15. sliding rod, 16. first groove pulley, 17. second groove pulley, 18. belt, 19. rotating rod, 20. knob, 21. housing. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-5The utility model provides a technical solution: a fixture for rough turning of a workpiece surface, comprising a base 1, a movable jaw 3 is provided on the upper surface of the base 1, a fixed jaw 2 is provided on one side of the movable jaw 3, the fixed jaw 2 is fixedly connected to the contact surface of the base 1, a screw 4 is rotatably connected to the other side of the movable jaw 3, the screw 4 is rotatably connected to the movable jaw 3 through a ball bearing, the outer wall of the screw 4 is threadedly connected to the base 1, one side surface of the movable jaw 3 is provided with two support blocks 5 in sequence from front to back, one side surface of the support block 5 is sequentially inserted with two sliding blocks 6 in sequence from front to back, the sliding block 6 is plugged into the support block 5 through a groove 7, and the sliding block 6 is connected to the groove The inner wall clearance of 7 is matched, the inner end of the sliding block 6 is fixed with a return spring 8, and the other end of the return spring 8 is fixedly connected to the deep end of the groove 7. A force-increasing component is provided at the upper end of the support block 5, and the force-increasing component includes a screw 9, a sleeve 10, a protrusion 11, a push rod 12 and a transverse groove 13. The screw 9 is rotatably connected to one end of the upper surface of the sliding block 6, and the screw 9 is rotatably connected to the sliding block 6 through a ball bearing. The outer wall of the screw 9 is threadedly connected to the sleeve 10, and the outer wall of the sleeve 10 is fixed with a protrusion 11 at both ends. The other end of the protrusion 11 is fixed with a push rod 12, and the push rod 12 is plugged into the sliding block 6 through the transverse groove 13. The outer wall of the push rod 12 is connected to the transverse groove 1 3, the inner wall clearance fits, the transverse groove 13 and the interior of the groove 7 are connected to each other, the end of the push rod 12 in the direction of the sliding block 6 is fixed with an anti-slip sheet 14, the anti-slip sheet 14 is made of rubber material and has a certain flexibility, which can improve the friction between the push rod 12 and the slider 6 after they are pressed against each other. A transmission assembly is provided on the outside of the two screw rods 9, and the transmission assembly includes a first groove wheel 16, a second groove wheel 17, a belt 18, a rotating rod 19, a knob 20 and a housing 21. The first groove wheel 16 is concentrically fixed to the end of the screw rod 9 away from the support block 5. A second groove wheel 17 is provided between the two first groove wheels 16, and the second groove wheel 17 is rotatably connected to the first groove wheel 16 through a belt 18. The inner wall of the second groove wheel 17 is fixed with a rotating rod 19, and the outer wall of the rotating rod 19 is rotatably connected to the shell 21. The rotating rod 19 is rotatably connected to the shell 21 through a ball bearing. The shell 21 is fixedly connected to the contact surface of the support block 5. The outer end of the rotating rod 19 is fixed with a knob 20. The inner wall of the push rod 12 is provided with a sliding rod 15. The outer wall of the sliding rod 15 is clearance-matched with the inner wall of the push rod 12. The sliding rod 15 is fixedly connected to the inner wall of the shell 21, which can increase the friction force of the push rod 12 when sliding. The center points of the knob 20, the rotating rod 19 and the second groove wheel 17 are all located on the same horizontal vertical line. The knob 20 is rotated under force to make the rotating rod 19 and the second groove wheel 17 rotate concentrically.

[0023] The fixture is used for rough turning of the workpiece surface. During use, when it is necessary to use the device provided by the utility model to clamp an irregular workpiece, first, the irregular workpiece is placed between the fixed jaw 2 and the movable jaw 3 on the upper surface of the base 1, so that the irregular surface of the workpiece faces the movable jaw 3, and the movable jaw 3 is rotated by the screw 4 to move toward the irregular workpiece. After multiple sliding blocks 6 are in contact with the irregular surface of the workpiece, the screw 4 is temporarily stopped. At this time, force is applied to the knob 20 to rotate the rotating rod 19 and the second groove wheel 17, and the two can be driven by the belt 18. The first groove wheel 16 and the two screw rods 9 rotate at the same time. Due to the threaded connection between the screw rod 9 and the sleeve 10, and the sleeve 10 cannot rotate, the two push rods 12 can slide inside the transverse groove 13. The push rod 12 presses the sliding block 6 to limit it. At this time, the secondary pair of screws 4 rotates in the same direction, so that the sliding block 6 and the fixed jaws 2 are fully pressed against the irregular workpiece to complete the clamping operation. The pressing force between multiple sliding blocks 6 and the irregular surface of the workpiece is much greater than the force of the return spring 8. There is no small pressing force between the local sliding block and the workpiece, and the stability of the workpiece after clamping is enhanced.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0026] It should also be noted that, for ease of description, only the parts related to the relevant disclosure are shown in the accompanying drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other; it should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units; it should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are schematic and not restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more"; the names of the messages or information exchanged between the multiple devices in the embodiments of the present disclosure are only for illustrative purposes, and are not used to limit the scope of these messages or information.

[0027] The standard parts or fiber yarns used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of various parts, fiber yarns and fabric layers all adopt conventional means such as mature bolts, rivets, welding, twisting, blending, needle punching composite and hot melt composite in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for rough turning of a workpiece surface, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a movable jaw (3), and a fixed jaw (2) is provided on one side of the movable jaw (3), and the fixed jaw (2) is fixedly connected to the contact surface of the base (1), and the center of the other side of the movable jaw (3) is rotatably connected to a screw (4), and the outer wall of the screw (4) is threadedly connected to the base (1), and one side surface of the movable jaw (3) is provided with two support blocks (5) in sequence from front to back, and one side surface of the support block (5) is inserted with two sliding blocks (6) in sequence from front to back, and the sliding block (6) is plug-connected to the support block (5) through a groove (7), and the inner end of the sliding block (6) is fixedly connected to a return spring (8), and the other end of the return spring (8) is fixedly connected to the deep end of the groove (7), and the upper end of the support block (5) is provided with a force-increasing component; The force-increasing assembly comprises a screw (9), a sleeve (10), a bump (11), a stopper (12) and a transverse groove (13); The screw rod (9) is rotatably connected to one end of the upper surface of the sliding block (6); the outer wall of the screw rod (9) is threadedly connected to a sleeve (10); the outer wall of the sleeve (10) is fixedly connected to protrusions (11) at both front and rear ends; the other end of the protrusion (11) is fixedly connected to a push rod (12); the push rod (12) is plug-connected to the sliding block (6) through a transverse groove (13); the transverse groove (13) and the interior of the groove (7) are communicated with each other.

2. A fixture for rough turning of a workpiece surface according to claim 1, characterized in that: The end of the push rod (12) facing the sliding block (6) is fixedly connected with an anti-slip sheet (14).

3. The fixture for rough turning of a workpiece surface according to claim 1, characterized in that: A transmission assembly is provided on the outside of the two screw rods (9); The transmission assembly includes a first sheave (16), a second sheave (17), a belt (18), a rotating rod (19), a knob (20) and a housing (21); The first sheave (16) is concentrically fixed to the end of the screw (9) away from the support block (5), and a second sheave (17) is provided between the two first sheaves (16). The second sheave (17) is rotatably connected to the first sheave (16) via a belt (18). The inner wall of the second sheave (17) is fixedly connected to a rotating rod (19), and the outer wall of the rotating rod (19) is rotatably connected to a housing (21). The housing (21) is fixedly connected to the contact surface of the support block (5), and the outer end of the rotating rod (19) is fixedly connected to a knob (20).

4. The fixture for rough turning of a workpiece surface according to claim 1, characterized in that: A sliding rod (15) is provided on the inner wall of the push rod (12), and the sliding rod (15) is fixedly connected to the inner wall of the housing (21).

5. The fixture for rough turning of a workpiece surface according to claim 3, characterized in that: The center points of the knob (20), the rotating rod (19) and the second groove wheel (17) are all located on the same horizontal vertical line.

Images