Expansion type tool clamp

Abstract

The utility model discloses an expansion type work fixture, relates to the field of work fixtures, solves the problem that an existing device is difficult to carry out expansion type stable clamping on a workpiece according to requirements, and adopts the following scheme that the expansion type work fixture comprises a clamping assembly, a main body of the clamping assembly is a jacking column, and two groups of clamping arms are arranged on the top side of the jacking column; each clamping arm is composed of a lantern ring part and arc arm parts connected in the front-back direction, and a pressing block is fixedly installed at the front end of the arc arm part on the front side. A driving assembly is arranged on the rear side of the clamping assembly, a main body of the driving assembly is a U-shaped seat, a finger air cylinder is fixedly mounted on the inner wall of the U-shaped seat, and the outer end of a hinge seat is hinged to a hinge part at the tail end of a clamping arm through the hinge seat; according to the expanding type tool clamp, through the arrangement of the clamping assembly and the clamping arms on the clamping assembly, a finger air cylinder in the driving assembly can be used for driving the two sets of clamping arms to rotate relatively, so that the pressing blocks on the front sides of the clamping arms synchronously expand outwards, and therefore outwards-expanding type clamping is conducted on a workpiece on the inner side.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to an expansion type tooling fixture. Background Art

[0002] Fixtures and fixtures are always used to hold tools;

[0003] After searching, the application with patent number CN202321626071.3 discloses an expansion tool fixture, in which four supporting legs are fixedly installed on the bottom of the workbench, an adaptive clamping mechanism is arranged on the top of the workbench, and an auxiliary clamping mechanism is also arranged on the workbench, and the adaptive clamping mechanism comprises: groove No. 1, and groove No. 1 is opened on the top of the workbench. By setting a motor, the motor is controlled to drive the bidirectional threaded rod to rotate forward or reverse, and the bidirectional threaded rod rotates forward or reversely so that the two threaded sliders approach or move away from each other along the outer wall of the bidirectional threaded rod respectively. When the two threaded sliders approach each other, they drive the two adaptive clamping components to approach each other, so as to facilitate clamping and fixing the workpiece. By setting an adaptive clamping component, it is possible to adapt to the surfaces of workpieces of different shapes when clamping and fixing the workpiece, and clamp and fix it, thereby greatly improving the practicality of workpiece clamping.

[0004] The above application document can stably clamp workpieces of different shapes, but is a common inner clamp, which can only clamp the workpiece from the outside, but cannot perform expansion clamping on the workpiece from the inside, and the clamping adaptability is limited.

[0005] Therefore, we proposed an expansion fixture. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides an expansion type fixture, which solves the problem that the prior device is difficult to perform expansion type stability clamping on the workpiece according to the demand.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: an expansion type fixture, including a clamping assembly and a support assembly on the front side thereof, the main body of the clamping assembly is a top column, the top side of the top column is rotatably sleeved with two groups of clamping arms, the clamping arm is composed of a collar portion and an arc arm portion connected to the front and rear thereof, and a pressure block is fixedly installed at the front end of the front arc arm portion;

[0008] A driving assembly is arranged at the rear side of the clamping assembly. The main body of the driving assembly is a U-shaped seat. A finger cylinder is fixedly mounted on the inner wall of the U-shaped seat, and the outer end of the hinge seat is hinged to the hinge part at the rear end of the clamping arm through the hinge seat.

[0009] Preferably, the collar portion is rotatably mounted on the top column of the top column in the clamping assembly;

[0010] The arrangement of the collar portion facilitates the rotation of the clamping arm on the clamping assembly, so that the front sides of the two groups of clamping arms can perform expansion clamping on the workpiece from the inside to the outside, thereby ensuring the clamping effect.

[0011] Preferably, the outer wall of the pressing block is an arc-shaped wall, and a pressing sleeve made of plastic is clamped on the outer side of the pressing block, and the pressing sleeve is a rectangular sleeve;

[0012] The arrangement of the arc-shaped wall of the pressing block can increase the contact area with the workpiece from the inside, thereby increasing the clamping stability.

[0013] Preferably, the main body of the support assembly is a U-shaped support seat, a support plate is slidably mounted in the support seat, and a support cylinder whose top end is fixedly connected to the bottom of the support plate is fixedly mounted on the top of the inner side of the support seat;

[0014] Among them, the setting of the abutment plate can support the workpiece from the bottom side to ensure the stability of the workpiece when it is clamped.

[0015] Preferably, a card slot with a top opening is provided in the side wall of the support seat, and a T-shaped card slidably mounted in the card slot is fixedly mounted on both side walls of the abutment plate.

[0016] The utility model provides an expansion type fixture, which has the following beneficial effects:

[0017] The expandable tooling fixture, through the setting of the clamping assembly and the clamping arms thereon, can utilize the finger cylinder in the driving assembly to drive the two groups of clamping arms to rotate relative to each other, so that the pressure blocks on the front side thereof are synchronously expanded outward, thereby performing an outward-expanding clamping of the workpiece from the inside, and the setting of the supporting assembly can support the workpiece as required to ensure stability after clamping, and can also utilize the two groups of pressure blocks to move inward synchronously to perform external clamping to ensure the clamping effect, thereby solving the problem that the existing device is difficult to perform expansion-type stability clamping of the workpiece as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the drive assembly of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the clamping assembly of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the support assembly of the utility model.

[0022] In the figure: 1. Clamping assembly; 11. Clamping arm; 111. Arc arm portion; 112. Ring portion; 113. Articulated portion; 114. Pressing block; 115. Pressing sleeve; 2. Supporting assembly; 21. Supporting seat; 22. Abutment plate; 23. Supporting cylinder; 3. Driving assembly; 31. Finger cylinder; 32. Articulated seat. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The embodiment of the utility model provides a technical solution: an expansion type fixture, including a clamping assembly 1 and a support assembly 2 on the front side thereof, the main body of the clamping assembly 1 is a top column, and two groups of clamping arms 11 are rotatably mounted on the top side of the top column, and the clamping arm 11 is composed of a collar portion 112 and an arc arm portion 111 connected to the front and rear thereof, and a pressure block 114 is fixedly installed at the front end of the front arc arm portion 111; a driving assembly 3 is arranged on the rear side of the clamping assembly 1, and the main body of the driving assembly 3 is a U-shaped seat, and a finger cylinder 31 is fixedly installed on the inner wall of the U-shaped seat, and the outer end of the hinge seat 32 is hinged to the hinge portion 113 at the rear end of the clamping arm 11 through the hinge seat 32;

[0025] Among them, the expansion tooling fixture, through the setting of the clamping component 1 and the clamping arm 11 thereon, can use the finger cylinder 31 in the driving component 3 to drive the two groups of clamping arms 11 to rotate relative to each other, so that the pressure block 114 on the front side is synchronously expanded outward, and then the workpiece is clamped outward from the inside, and the setting of the support component 2 can support the workpiece as needed to ensure stability after clamping, and at the same time, it can also use the two groups of pressure blocks 114 to move inward synchronously for external clamping to ensure the clamping effect, thereby solving the problem that the existing device is difficult to perform expansion-type stability clamping of the workpiece as needed.

[0026] Embodiment 2:

[0027] The collar portion 112 is rotatably mounted on the top column of the top column in the clamping assembly 1; wherein, the setting of the collar portion 112 facilitates the rotation of the clamping arm 11 on the clamping assembly 1, so that the front sides of the two groups of clamping arms 11 can expandably clamp the workpiece from the inside to the outside, thereby ensuring the clamping effect.

[0028] The outer wall of the pressing block 114 is an arc-shaped wall, and a pressing sleeve 115 made of plastic is clamped on the outer side of the pressing block 114, and the pressing sleeve 115 is a rectangular sleeve; wherein, the setting of the arc-shaped wall of the pressing block 114 can increase the contact area with the workpiece from the inside, thereby increasing the clamping stability.

[0029] The main body of the support assembly 2 is a U-shaped support seat 21, in which a support plate 22 is slidably mounted, and a support cylinder 23 whose top end is fixedly connected to the bottom of the support plate 22 is fixedly installed on the top of the inner side of the support seat 21; wherein, the setting of the support plate 22 can support the workpiece from the bottom side to ensure the stability of the workpiece when clamping.

[0030] A card slot with an opening on the top is formed in the side wall of the support seat 21 , and a T-shaped card slidably mounted in the card slot is fixedly mounted on both side walls of the abutment plate 22 .

[0031] The working principle and use process of the utility model are as follows: when the device is required to perform expansion clamping on the workpiece, the pressure blocks 114 at the front ends of the two groups of clamping arms 11 are inserted into the inner side of the workpiece, and then the two groups of hinged seats 32 on the inner side of the driving component 3 are opened to drive the front ends of the two groups of clamping arms 11 to expand outward, thereby performing expansion clamping on the workpiece from the inside, and then the supporting cylinder 23 is opened to drive the abutment plate 22 to move upward, supporting the workpiece from the bottom side to ensure its stability during clamping.

[0032] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An expansion fixture, characterized in that: The invention comprises a clamping assembly (1) and a supporting assembly (2) on the front side thereof, wherein the main body of the clamping assembly (1) is a top column, and two groups of clamping arms (11) are rotatably mounted on the top side of the top column, and the clamping arm (11) is composed of a collar portion (112) and an arc arm portion (111) connected to the front and rear thereof, and a pressing block (114) is fixedly mounted on the front end of the front arc arm portion (111); A driving assembly (3) is arranged at the rear side of the clamping assembly (1), the main body of the driving assembly (3) being a U-shaped seat, a finger cylinder (31) being fixedly mounted on the inner wall of the U-shaped seat, and the outer end of the hinge seat (32) being hingedly mounted on a hinge portion (113) at the rear end of the clamping arm (11) through the hinge seat (32).

2. An expansion fixture according to claim 1, characterized in that: The collar portion (112) is rotatably sleeved on the top end column of the top column in the clamping assembly (1).

3. The expansion fixture according to claim 1, characterized in that: The outer wall of the pressing block (114) is an arc-shaped wall, and a pressing sleeve (115) made of plastic is clamped on the outer side of the pressing block (114), and the pressing sleeve (115) is a rectangular sleeve.

4. The expansion fixture according to claim 1, characterized in that: The main body of the support assembly (2) is a U-shaped support seat (21), a support plate (22) is slidably mounted in the support seat (21), and a support cylinder (23) is fixedly mounted on the top of the inner side of the support seat (21), the top end of which is fixedly connected to the bottom of the support plate (22).

5. The expansion fixture according to claim 4, characterized in that: A card slot with a top opening is provided in the side wall of the support seat (21), and a T-shaped card slidably mounted in the card slot is fixedly mounted on both side walls of the abutment plate (22).

Images