Precise bench clamp

Abstract

The utility model discloses a precise bench clamp, belongs to the field of metal processing equipment, and solves the problem that a movable end jaw and a fixed end jaw of a bench clamp in the prior art cannot keep better parallelism in the opening and closing process of the bench clamp. The movable end of the clamp body is provided with a guide protruding end, a groove matched with the guide protruding end is formed in the end of the fixed clamp body, the guide protruding end is inserted into the groove, the surface of the guide protruding end is in sliding contact with the inner wall of the groove, and a nut set is installed in the groove of the fixed clamp body. The transmission screw penetrates through the pincer body movable end and the guide protruding end and then is in threaded connection with the nut set, and the smooth face part of the transmission screw is rotationally connected with the pincer body movable end and the guide protruding end through bearings. The clamp body movable end and the guide protruding end are integrally formed in a casting mode. According to the precise bench clamp, the parallelism of the jaw is well guaranteed, and the clamping effect of a workpiece is guaranteed.

Description

Technical Field

[0001] The utility model relates to a precision bench clamp, belonging to the field of metal processing equipment. Background Art

[0002] A bench vise, also known as a vice or bench vise, is a tool used to clamp and fix workpieces for processing. It is widely used. There are many varieties of it. It is a necessary tool for fitters, and it is also the origin of the name of fitters, because most of the work of fitters is done on a bench vise, such as sawing, filing, chiseling, and assembly and disassembly of parts.

[0003] During bench work, if the movable jaws and the fixed jaws of the bench vise cannot maintain a good degree of parallelism during the opening and closing process of the bench vise, the workpiece may be clamped off-center, or the surface of the jaws may not fit well with the plane surface of the workpiece, affecting the clamping effect of the workpiece and the subsequent processing effect of the workpiece. Utility Model Content

[0004] The utility model provides a precision bench vise, the parallelism of the jaws is better guaranteed, and the clamping effect of the workpiece is guaranteed.

[0005] The technical solution adopted by the utility model is a precision bench vise, comprising a fixed clamp body with a jaw iron, a movable end of the clamp body with a jaw iron and a transmission screw; the movable end of the clamp body is installed at one end of the fixed clamp body and driven by the transmission screw;

[0006] The movable end of the pliers body has a guide protrusion end, and the fixed pliers body end is constructed with a groove that matches the guide protrusion end. The guide protrusion end is inserted into the groove, and the surface of the guide protrusion end is in sliding contact with the inner wall of the groove;

[0007] A nut group is installed in the groove of the fixed pliers body, and the transmission screw passes through the movable end of the pliers body and the guide protrusion end and is threadedly connected with the nut group. The smooth part of the transmission screw is rotatably connected with the movable end of the pliers body and the guide protrusion end through a bearing.

[0008] The movable end of the clamp body and the guide protrusion end are integrally cast.

[0009] Optimally, the above-mentioned precision bench vise has a groove body arranged along the length extension direction of the transmission screw rod constructed inside the guide protrusion end; the nut group includes a nut fixing block, and the nut fixing block constructs a limiting sleeve at one end toward the guide protrusion end;

[0010] The limiting sleeve is inserted into the groove body at the guide protrusion end and is in sliding contact with the inner wall of the groove body.

[0011] Optimally, in the above-mentioned precision vise, a thread is constructed on the inner wall of the limiting sleeve, and the threaded portion of the transmission screw is located in the limiting sleeve and cooperates with the internal thread of the limiting sleeve.

[0012] Optimized, the precision bench vise, the nut set and the limiting sleeve are integrally formed.

[0013] Optimally, in the above-mentioned precision bench vise, the groove of the fixed clamp body extends through the fixed clamp body along the length extension direction of the transmission screw; the nut fixing block is installed into the groove of the fixed clamp body from one end of the groove of the fixed clamp body and fixed, and the limiting sleeve is inserted into the groove.

[0014] Optimally, the precision bench vise has an end opening formed on the movable end of the pliers body away from the fixed pliers body, and the end opening extends from the end surface of the movable end of the pliers body to the groove body of the guide protrusion end; the transmission screw is inserted from the end opening into the groove body of the guide protrusion end;

[0015] A baffle plate slot is constructed on the movable end of the pliers body at one end away from the fixed pliers body, a screw baffle plate is installed in the baffle plate slot, and the screw baffle plate is fixed to the baffle plate slot by a bolt;

[0016] An annular groove is constructed on the transmission screw, and one end of the screw baffle extends into the annular groove. When the transmission screw rotates, the end of the screw baffle slides in contact with the inner surface of the annular groove.

[0017] The advantages of this application are:

[0018] In the technical solution of the present application, the movable end of the pliers body and the guide protrusion end are precision cast as one piece, formed as one piece, with high compressive strength, reducing the number of installation steps and lowering costs; and because the movable end of the pliers body and the guide protrusion end are cast as one piece, compared with welding connection, the stress deformation during processing is less, which can better ensure dimensional accuracy and reduce the problem of reduced parallelism between the movable jaw and the fixed jaw caused by position offset and angle inclination of the guide protrusion end.

[0019] The nut fixing block is fixed at the end of the groove of the fixed pliers body. When the movable end of the pliers body is driven by the transmission screw, the limiting sleeve slides in the groove body of the guide protrusion end; and the guide protrusion end slides in the groove, and the movement of the guide protrusion end is limited internally and externally by the limiting sleeve and the groove respectively, thereby reducing the position offset and angular inclination of the movable end of the pliers body during the movement, and reducing the problem of reduced parallelism between the movable jaw and the fixed jaw caused by the position offset and angular inclination of the guide protrusion end. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of this application;

[0021] Figure 2 This is a schematic diagram of the decomposition structure of this application. DETAILED DESCRIPTION

[0022] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] As shown in the figure, the utility model is a precision bench vise, comprising a fixed clamp body 1 with a jaw iron, a clamp body movable end 2 with a jaw iron and a transmission screw 3; the clamp body movable end 2 is installed at one end of the fixed clamp body 1 and driven by the transmission screw 3.

[0024] As shown in the figure, the movable end 2 of the pliers body has a guide protrusion end 201, and the end of the fixed pliers body 1 is constructed with a groove 101 that cooperates with the guide protrusion end 201. The guide protrusion end 201 is inserted into the groove 101, and the surface of the guide protrusion end 201 is in sliding contact with the inner wall of the groove 101.

[0025] A nut group 4 is installed in the groove 101 of the fixed pliers body 1, and the transmission screw 3 passes through the movable end 2 of the pliers body and the guide protrusion end 201 and is threadedly connected with the nut group 4. The smooth part of the transmission screw 3 is rotatably connected with the movable end 2 of the pliers body and the guide protrusion end 201 through a bearing.

[0026] The movable end 2 of the pliers body is integrally cast with the guide protrusion end 201. Compared with the welding connection, the connection between the movable end 2 of the pliers body and the guide protrusion end 201 has less stress deformation during processing, which can better ensure the dimensional accuracy and reduce the problem of reduced parallelism between the movable jaw and the fixed jaw caused by the position offset and angle tilt of the guide protrusion end 201.

[0027] A groove is constructed inside the guide protrusion end 201 and arranged along the length extension direction of the transmission screw 3. The nut assembly 4 includes a nut fixing block 402, and the nut fixing block 402 is constructed with a limiting sleeve 401 at one end facing the guide protrusion end 201. The limiting sleeve 401 is inserted into the groove of the guide protrusion end 201 and slides in contact with the inner wall of the groove.

[0028] The nut fixing block 402 is fixed at the end of the groove 101 of the fixed pliers body 1. When the movable end 2 of the pliers body is driven by the transmission screw 3, the limiting sleeve 401 slides and fits in the groove body of the guide protrusion end 201, thereby reducing the position deviation and angular inclination of the movable end 2 of the pliers body during movement, and reducing the problem of reduced parallelism between the movable jaw and the fixed jaw caused by the position deviation and angular inclination of the guide protrusion end 201.

[0029] In addition, the guide protrusion end 201 slides in the groove 101, and the groove 101 limits the movement of the guide protrusion end 201 from the outside, thereby reducing the position offset and angle tilt of the movable end 2 of the clamp body during movement, and reducing the problem of reduced parallelism between the movable jaw and the fixed jaw caused by the position offset and angle tilt of the guide protrusion end 201.

[0030] A thread is constructed on the inner wall of the limiting sleeve 401 , and the threaded portion of the transmission screw 3 is located inside the limiting sleeve 401 and is threadably matched with the internal thread of the limiting sleeve 401 .

[0031] The nut assembly 4 is integrally formed with the limiting sleeve 401. The groove 101 of the fixed pliers body 1 passes through the fixed pliers body 1 along the length extension direction of the driving screw 3, the nut fixing block 402 is installed into the groove 101 of the fixed pliers body 1 from one end thereof and fixed by bolt connection, and the limiting sleeve 401 is inserted into the groove 101.

[0032] An end opening is constructed on the end of the movable end 2 of the caliper body away from the fixed caliper body 1, and the end opening extends from the end surface of the movable end 2 of the caliper body to the groove body of the guide protrusion end 201; the transmission screw 3 is inserted into the groove body of the guide protrusion end 201 from the end opening, and a baffle slot is constructed on the end of the movable end 2 of the caliper body away from the fixed caliper body 1, and a screw baffle 301 is installed in the baffle slot, and the screw baffle 301 is fixed to the baffle slot by bolts. An annular groove 302 is constructed on the transmission screw 3, and one end of the screw baffle 301 extends into the annular groove 302. When the transmission screw 3 rotates, the end of the screw baffle 301 slides in contact with the inner surface of the annular groove 302.

[0033] The screw stopper 301 can be used to lock the axial position of the transmission screw 3, thereby reducing the axial movement between the transmission screw 3 and the movable end 2 of the caliper body when the transmission screw 3 rotates. In the axial position of the transmission screw 3, when the transmission screw 3 rotates, the transmission screw 3 and the movable end 2 of the caliper body are relatively fixed, and the transmission screw 3 is threadedly connected with the nut group 4, so that when the transmission screw 3 rotates, the movable end 2 of the caliper body is driven to move, so that the movable end 2 of the caliper body and the fixed caliper body 1 are opened and closed.

[0034] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A precision bench vise, comprising a fixed vise body (1), a movable end of the vise body (2) and a transmission screw (3); the movable end of the vise body (2) is mounted on one end of the fixed vise body (1) and driven by the transmission screw (3); characterized in that: The movable end (2) of the pliers body has a guide protrusion end (201), and the end of the fixed pliers body (1) is constructed with a groove (101) that matches the guide protrusion end (201). The guide protrusion end (201) is inserted into the groove (101), and the surface of the guide protrusion end (201) is in sliding contact with the inner wall of the groove (101); A nut group (4) is installed in the groove (101) of the fixed pliers body (1); the transmission screw rod (3) passes through the pliers body movable end (2) and the guide protrusion end (201) and is threadedly connected to the nut group (4); the smooth surface part of the transmission screw rod (3) is rotatably connected to the pliers body movable end (2) and the guide protrusion end (201) via a bearing; The movable end (2) of the clamp body and the guide protruding end (201) are integrally cast.

2. The precision vise according to claim 1, characterized in that: A groove body is constructed inside the guide protruding end (201) and is arranged along the length extension direction of the transmission screw rod (3); the nut assembly (4) comprises a nut fixing block (402), and a limiting sleeve (401) is constructed at one end of the nut fixing block (402) facing the guide protruding end (201); The limiting sleeve (401) is inserted into the groove body of the guide protruding end (201) and is in sliding contact with the inner wall of the groove body.

3. The precision vise according to claim 2, characterized in that: A thread is formed on the inner wall of the limiting sleeve (401), and the threaded portion of the transmission screw (3) is located inside the limiting sleeve (401) and is threadably matched with the internal thread of the limiting sleeve (401).

4. The precision vise according to claim 2, characterized in that: The nut assembly (4) and the limiting sleeve (401) are integrally formed.

5. The precision vise according to claim 2, characterized in that: The groove (101) of the fixed pliers body (1) penetrates the fixed pliers body (1) along the length extension direction of the transmission screw (3); the nut fixing block (402) is installed into the groove (101) of the fixed pliers body (1) from one end of the groove (101) of the fixed pliers body (1) and fixed, and the limiting sleeve (401) is inserted into the groove (101).

6. The precision vise according to claim 2, characterized in that: Said An end opening is formed on the end of the movable end (2) of the pliers body away from the fixed pliers body (1), and the end opening extends from the end surface of the movable end (2) of the pliers body to the groove body of the guide protrusion end (201); the transmission screw (3) is inserted into the groove body of the guide protrusion end (201) from the end opening; A baffle slot is formed on the movable end (2) of the pliers body, the end away from the fixed pliers body (1), a screw baffle (301) is installed in the baffle slot, and the screw baffle (301) is fixed to the baffle slot by a bolt; An annular groove (302) is constructed on the transmission screw (3), and one end of the screw stopper (301) extends into the annular groove (302). When the transmission screw (3) rotates, the end of the screw stopper (301) is in sliding contact with the inner surface of the annular groove (302).

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