Clamp and machine tool

Abstract

An installation part of the clamp is provided with at least two clamping parts side by side, a clamping groove is formed between every two adjacent clamping parts, each clamping part can move in a reciprocating mode relative to the installation part in the arrangement direction of the at least two clamping parts, the size of the clamping groove can be changed, the clamp is suitable for different workpieces, and universality is improved. And the position of the clamping piece relative to the mounting piece can be movably adjusted, and the position of the clamping groove can be adjusted, so that the position of the workpiece relative to the mounting piece can be changed, eccentric machining or machining at different positions is realized, and the universality is also improved. After at least the clamping pieces move in place relative to the installation piece, the installation piece and the at least two clamping pieces can be locked through the at least two locking structures respectively, the positions of the clamping pieces can be fixed after the clamping pieces clamp the workpiece, and clamping and positioning of the workpiece are completed. The universality of the clamp is effectively improved, the structure is simple, the use cost is low, and the technical problems that the universality of the clamp is not high enough and the use cost is not low enough are solved to a certain extent.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical manufacturing and processing, and particularly relates to a clamp and a machine tool. BACKGROUND

[0002] A clamp refers to a device used to fix a machining object in a correct position to accept construction or detection in a mechanical manufacturing process. The clamp is connected to a connecting piece of a machine tool, the clamp clamps a workpiece, and a tool of the machine tool can process the workpiece.

[0003] At present, the shape of the clamp connected to the connecting piece of the machine tool is fixed, or can be adjusted within a certain range but has a high use cost, which affects the workpiece that can be processed by the machine tool and the shape that can be processed, and the clamp has low universality and low use cost. CONTENT OF THE UTILITY MODEL

[0004] The application aims to at least solve the technical problem that the clamp has low universality and low use cost to some extent. To this end, the application provides a clamp and a machine tool.

[0005] The application provides a clamp, which comprises:

[0006] a mounting piece;

[0007] at least two clamping pieces, which are arranged side by side on the mounting piece and form a clamping groove between adjacent two clamping pieces, and each clamping piece is reciprocally movable relative to the mounting piece along an arrangement direction of the at least two clamping pieces;

[0008] at least two locking structures for locking the mounting piece and the at least two clamping pieces respectively;

[0009] one side of each clamping piece opposite to the other side is a clamping side, and the clamping piece is provided with an avoiding through groove located on the clamping side;

[0010] the mounting piece is provided with a sliding groove with a groove opening facing the clamping piece, the extension direction of the sliding groove extends along the arrangement direction of the at least two clamping pieces, and the locking structure comprises:

[0011] a limiting piece which is matched with the sliding groove in a mortise and tenon joint and is reciprocally movable along the extension direction of the sliding groove;

[0012] a locking piece which is provided with a connecting part and a connecting part, the connecting part passes through one clamping piece and is threadedly matched with the limiting piece, and the connecting part abuts against the clamping piece passed through by the connecting part and the connecting part.

[0013] In some or certain embodiments, the mount is provided with a first rack, and the clamping members are provided with a second rack, the second rack being engaged with the first rack.

[0014] In some or certain embodiments, the first rack extends along the arrangement direction of the clamping members, and the first rack is a straight rack.

[0015] In some or certain embodiments, the mount is further provided with a mounting through slot communicating with one of the clamping slots, the mounting through slot extending at an angle with respect to the arrangement direction of the clamping members.

[0016] In some or certain embodiments, the clamp comprises two clamping members spaced apart on the mount, and the mount comprises:

[0017] a main body;

[0018] two adjustment portions spaced apart on the main body and detachably connected to the main body, the mounting through slot being formed between the two adjustment portions, and the two clamping members being respectively arranged on the two adjustment portions.

[0019] In some or certain embodiments, the mount is provided with spaced apart fitting ends and connecting ends, the fitting ends being for mounting the clamping members, and the connecting ends being provided with connecting shaft holes.

[0020] In some or certain embodiments, the clamp further comprises:

[0021] at least two tightening members threadedly connected to the mount at intervals, and each being provided with a tightening end extending into the connecting shaft hole.

[0022] The present application provides a machine tool, comprising:

[0023] a clamp as described above;

[0024] a frame, a connecting member spaced apart on the frame and connected to the mount, and a fitting rod spaced apart on the frame and fitted into the mount, and the fitting rod extending at an angle with respect to the arrangement direction of the clamping members.

[0025] According to one or more embodiments of the present application, the following beneficial effects are provided:

[0026] The mounting member of the clamp can be connected to a connecting member of a device such as a machine tool, serving as a mounting base of other components in the clamp. At least two clamping members are arranged side by side on the mounting member, and a clamping groove is formed between adjacent clamping members. Each clamping member is reciprocally movable relative to the mounting member along the arrangement direction of the at least two clamping members, so that the size of the clamping groove formed between adjacent clamping members changes, making the clamping groove between adjacent clamping members applicable to workpieces of different sizes and dimensions, improving the versatility of the clamp. Moreover, the clamping members are reciprocally movable relative to the mounting member, so that the positions of the clamping members relative to the mounting member can be adjusted, and the positions of the clamping groove between adjacent clamping members relative to the mounting member can also be adjusted, making the positions of the workpieces relative to the mounting member or the machine tool changeable, which can cooperate with tools such as machine tool cutters to realize eccentric machining or machining at different positions of the workpieces, also being beneficial to improve the versatility of the clamp. After the at least clamping member is moved into position relative to the mounting member, at least two locking structures can be used to lock the mounting member and the at least two clamping members, respectively, so that the positions of the clamping members after clamping the workpieces can be fixed, completing effective clamping and positioning of the workpieces. The application range of the clamp can be effectively expanded, the versatility of the clamp is effectively improved, and the structure of the clamp as a whole is simple, which can effectively reduce the preparation and use cost of the clamp, and to some extent, solve the technical problems that the versatility of the clamp is not high enough and the use cost is not low enough. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] Fig. 1 A structural schematic diagram of a clamp in some embodiments or certain embodiments of the present application is shown.

[0029] Fig. 2 A top view of a clamp in some embodiments or certain embodiments of the present application is shown.

[0030] Fig. 3 A front view of a clamp in some embodiments or certain embodiments of the present application is shown.

[0031] Explanation of reference signs: 1, mounting piece; 11, first rack line; 12, mounting groove; 13, main body; 131, base; 132, pressing block; 1321, guide protrusion; 14, adjusting part; 141, guide groove; 15, matching end; 16, connecting end; 161, connecting shaft hole; 17, matching hole; 18, sliding groove; 2, clamping piece; 21, second rack line; 22, clamping side; 23, avoiding groove; 3, locking structure; 31, limiting piece; 32, locking piece; 321, abutting part; 322, connecting part; 4, clamping groove; A, arrangement direction. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly. In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0034] In the related art, the shape of the fixture connected by the connecting piece of the machine tool is fixed, the fixture can only clamp workpieces of specific size and specific shape, or the fixture can be adjusted but it is difficult to adjust the position of the workpiece to make the workpiece eccentric machining, and some functional fixtures have complex structure, resulting in high preparation and use cost, and the technical problem of low universality and high use cost of the fixture exists. The embodiments of the present application provide a fixture and a machine tool, which can at least solve the above technical problems to a certain extent.

[0035] The present application will be described below with reference to the accompanying drawings:

[0036] Fig. 1 The structure of a fixture in some embodiments or certain embodiments of the present application is shown, Fig. 2 The top view of a fixture in some embodiments or certain embodiments of the present application is shown, Fig. 3 The front view of a fixture in some embodiments or certain embodiments of the present application is shown, for reference Figs. 1-3 The embodiments of the present application provide a fixture, which comprises:

[0037] The mounting piece 1.

[0038] At least two clamping pieces 2 are arranged side by side on the mounting piece 1, and a clamping groove 4 is formed between adjacent two clamping pieces 2, and each clamping piece 2 is reciprocally movable relative to the mounting piece 1 along the arrangement direction A of the at least two clamping pieces 2.

[0039] At least two locking structures 3 are used to lock the mounting piece 1 and the at least two clamping pieces 2 respectively.

[0040] The mounting piece 1 of the clamp can be connected to a connecting piece of equipment such as a machine tool, serving as a mounting base of other components in the clamp. The mounting piece 1 is provided with at least two clamping pieces 2 side by side, and a clamping groove 4 is formed between adjacent two clamping pieces 2. Each clamping piece 2 is reciprocally movable relative to the mounting piece 1 along the arrangement direction A of the at least two clamping pieces 2, so that the size of the clamping groove 4 formed between the adjacent two clamping pieces 2 also changes, so that the clamping groove 4 between the adjacent two clamping pieces 2 can be suitable for workpieces of different sizes and sizes, improving the versatility of the clamp. And the clamping piece 2 is reciprocally movable relative to the mounting piece 1, so that the position of the clamping piece 2 relative to the mounting piece 1 can be moved and adjusted, and the position of the clamping groove 4 between the adjacent two clamping pieces 2 relative to the mounting piece 1 can also be adjusted, so that the position of the workpiece relative to the mounting piece 1 or the machine tool can be changed. It can cooperate with tools such as machine tool cutters to realize eccentric machining or different position machining of the workpiece, which is also conducive to improving the versatility of the clamp. After the at least clamping piece 2 is moved to the position relative to the mounting piece 1, at least two locking structures 3 can be used to lock the mounting piece 1 and the at least two clamping pieces 2, respectively. The position of the clamping piece 2 after clamping the workpiece can be fixed, and the effective clamping and positioning of the workpiece can be completed. The application range of the clamp can be effectively expanded, the versatility of the clamp can be effectively improved, and the structure of the clamp as a whole is simple, which can effectively reduce the preparation and use cost of the clamp, and to a certain extent. The technical problem of insufficient versatility and low use cost of the clamp is solved.

[0041] In some or certain embodiments, the mounting piece 1 is provided with a first rack 11, and the clamping piece 2 is provided with a second rack 21.

[0042] The first rack 11 of the mounting piece 1 and the second rack 21 of the clamping piece 2 can be engaged with each other to limit the clamping piece 2, ensure the positional stability of the clamping piece 2 relative to the mounting piece 1, and cooperate with the locking piece 32 to realize stable clamping of the workpiece by the clamping piece 2. It is convenient for stable machining of the workpiece.

[0043] In some or certain embodiments, the first rack 11 extends along the arrangement direction A of the at least two clamping pieces 2, and the first rack 11 is a straight rack.

[0044] The first rack 11 extends along the arrangement direction A of the at least two clamping pieces 2, so that after the clamping piece 2 is moved to a certain position relative to the mounting piece 1, the second rack 21 of the clamping piece 2 is engaged with the first rack 11, and the first rack is a straight rack. It can stably limit the clamping piece 2 in the direction in which the clamping piece 2 can move relative to the mounting piece 1, improve the positional accuracy of the clamping piece 2 relative to the mounting piece 1, and facilitate the machining of the workpiece clamped by the clamping piece 2.

[0045] In some or certain embodiments, the side of the two adjacent clamping pieces 2 opposite to each other is the clamping side 22, and the clamping piece 2 is provided with the avoiding through slot 23 on the clamping side 22.

[0046] When the two clamping pieces 2 clamp the workpiece through the corresponding clamping sides 22, the avoiding through slot 23 of the clamping side 22 can leave a certain space between the clamping piece 2 and the workpiece, facilitating the placement and extraction of the workpiece.

[0047] In some or certain embodiments, the clamping side 22 of the clamping piece 2 can be a plane, facilitating the clamping of the clamping piece 2 on the workpiece with a square shape or a plane surface, and also facilitating the clamping of more types of workpieces.

[0048] In some or certain embodiments, the extending direction of the avoiding through slot 23 and the arrangement direction A of the at least two clamping pieces 2 can form an angle. The operation space left by the avoiding through slot 23 can be larger. The clamping piece 2 can be provided in a block shape with an arc-shaped cross section, or can also be a square shape, and one side of the clamping piece 2 with a plane can be configured as the clamping side 22. Facilitating the machining and assembly of the clamping piece 2, and also facilitating the clamping of the workpiece.

[0049] In some or certain embodiments, the mounting piece 1 is provided with the sliding groove 18 with a notch facing the clamping piece 2, the extending direction of the sliding groove 18 extends along the arrangement direction A of the at least two clamping pieces 2, and the locking structure 3 comprises:

[0050] The limiting piece 31 is matched with the sliding groove 18 in a mortise and tenon joint, and can reciprocate along the extending direction of the sliding groove 18.

[0051] The locking piece 32 is provided with the abutting part 321 and the connecting part 322 connected with each other, the connecting part 322 passes through one clamping piece 2 and is matched with the limiting piece 31 in a screw thread, and the abutting part 321 abuts against the clamping piece 2 passed through by the connecting part 322.

[0052] The mounting piece 1 is provided with a sliding groove 18 facing the clamping piece 2, and the extension direction of the sliding groove 18 extends along the arrangement direction A of the at least two clamping pieces 2, the sliding groove 18 can provide a certain guiding effect, the limiting piece 31 is matched with the sliding groove 18 in a mortise and tenon joint and can reciprocate along the extension direction of the sliding groove 18, the clamping piece 32 in the clamping structure 3 is inserted into the sliding groove 18 through the clamping piece 2, the connecting part 322 of the clamping piece 32 is inserted into the sliding groove 18 and is matched with the limiting piece 31 in a screw thread, the abutting part 321 of the clamping piece 32 abutting with the clamping piece 2 can press the clamping piece 2 on the mounting piece 1, the limiting piece 31 is matched with the sliding groove 18 in a mortise and tenon joint and is matched with the connecting part 322 in a screw thread, and the abutting part 321 and the limiting piece 31 can clamp the clamping piece 2 on the mounting piece 1, thereby completing the locking of the clamping piece 2 and the mounting piece 1. At the same time, the sliding groove 18 of the mounting piece 1 can also guide the limiting piece 31, and the limiting piece 31 can be moved to a corresponding position, and then the clamping piece 2 is moved to complete the locking and positioning of the clamping piece 2 through the clamping piece 32. The positioning accuracy of the clamping piece 2 can be improved to ensure the stable clamping and positioning of the clamping piece 2 on the workpiece, the position of the clamping piece 2 can be quickly adjusted and positioned, the workpiece can be quickly clamped, and the workpiece can be quickly clamped.

[0053] In some or certain embodiments, the sliding groove 18 of the mounting piece 1 can be a dovetail groove or a reverse T-shaped groove, the limiting piece 31 can be a dovetail block or a T-shaped block matched with the dovetail groove or the reverse T-shaped groove, the mortise and tenon joint between the limiting piece 31 and the sliding groove 18 can be realized, and the limiting piece 31 can be moved along the extension direction of the sliding groove 18. The clamping piece 32 of the clamping structure 3 can be a fastener such as a bolt or a screw, the rod part of the bolt can be the connecting part 322, and the head part of the bolt can be the abutting part 321. The structure is simple and easy to realize, some components can be standard components, the jig can be easily processed and prepared, and the preparation and use cost of the jig can be reduced.

[0054] In some or certain embodiments, the clamping structure 3 can also include a fastener, the fastener can be slid through the clamping piece 2 and then be screwed with the mounting piece 1, and a plurality of threaded holes can be arranged on the mounting piece 1 along the arrangement direction A of the at least two clamping pieces 2. The clamping piece 2 can also be moved along the arrangement direction A of the at least two clamping pieces 2, and the clamping piece 2 and the mounting piece 1 can be locked through the fastener after being moved to the position.

[0055] In some or certain embodiments, the mounting piece 1 is also provided with a mounting through groove 12 communicating with one clamping groove 4, and the extension direction of the mounting through groove 12 and the arrangement direction A of the at least two clamping pieces 2 form an included angle.

[0056] The installation channel 12 of the installation piece 1 is communicated with a clamping groove 4, and the extension direction of the installation channel 12 forms an angle with the arrangement direction A of the at least two clamping pieces 2. On the one hand, the installation channel 12 can provide a avoiding or operating space, and on the other hand, the installation channel 12 can also provide an installation space for special-shaped workpieces, and cooperates with the adjacent two clamping pieces 2 to clamp the workpiece, which is beneficial to improve the versatility of the clamp.

[0057] In some or certain embodiments, the number of clamping pieces 2 in the clamp can be two, and can also be three according to requirements, and in the case of three, batch processing of part of the workpieces can be completed. It is also beneficial to improve the versatility of the clamp.

[0058] In some or certain embodiments, the clamp can also include two clamping pieces 2 which are spaced apart on the installation piece 1. The installation piece 1 can include:

[0059] The main body 13.

[0060] Two adjusting parts 14 which are spaced apart on the main body 13 and are detachably connected with the main body 13. The installation channel 12 is formed between the two adjusting parts 14, and the two clamping pieces 2 are respectively arranged on the two adjusting parts 14.

[0061] The installation piece 1 can be installed or connected to the connecting piece of the machine tool through the main body 13. The two adjusting parts 14 are detachably connected with the main body 13, which facilitates the disassembly and assembly of the adjusting part 14 and the main body 13. The adjusting part 14 is separated from the main body 13, and the clamping piece 2 can also be separated from the main body 13 together with the adjusting part 14. It is convenient for disassembly, maintenance and replacement of the installation piece 1 according to requirements, and it is also convenient for maintenance of the clamp.

[0062] In some or certain embodiments, the main body 13 can include a base 131 and two pressing blocks 132 which are spaced apart on the base 131. The opposite sides of the two pressing blocks 132 are respectively provided with a guide protrusion 1321 which extends along the arrangement direction A of the at least two clamping pieces 2. The two adjusting parts 14 are supported on the base 131 and are spaced apart between the two pressing blocks 132. Each adjusting part 14 is provided with a guide groove 141 which is slidably connected with the two guide protrusions 1321 along the arrangement direction A. A fastener passes through the pressing block 132 and is threadedly connected with the base 131. The fastener is rotated relative to the base 131 to make the pressing block 132 close to the base 131. The guide protrusion 1321 on the pressing block 132 applies pressure to the adjusting part 14 to make the adjusting part 14 tightly fixed on the base 131. The adjusting part 14 can also be provided with. It is convenient for the installation and positioning of the adjusting part 14 relative to the main body 13.

[0063] In some or certain embodiments, the mounting piece 1 can be provided with spaced apart fitting ends 15 for mounting the clamping pieces 2 and connecting ends 16 provided with connecting shaft holes 161. The connecting shaft holes 161 can provide the clamps with space for mounting to the machine tool, and the clamps can be flexibly connected according to requirements, which is conducive to improving the versatility of the clamps.

[0064] In some or certain embodiments, the clamp further comprises at least two tightening pieces (not shown in the figure) which are threadedly connected to the mounting piece 1 in a spaced apart manner and are each provided with a tightening end extending into the connecting shaft hole 161. The machine tool main shaft inserted into the connecting shaft hole 161 can be tightened, which improves the connection stability of the clamp and the machine tool. The tightening pieces can be fasteners such as bolts.

[0065] In some or certain embodiments, the two tightening pieces can be respectively threadedly connected to the two adjusting portions 14 and are each provided with a tightening end extending into the connecting shaft hole 161. The connection stability of the clamp and the machine tool is improved. The tightening pieces can be fasteners such as bolts.

[0066] In some or certain embodiments, the first rack strip 11 of the mounting piece 1 can be arranged at the fitting end 15, the fitting end 15 can be located at the adjusting portion 14, the connecting end 16 can be located at the main body 13, and one end of the connecting shaft hole 161 can be in communication with the mounting through slot 12 between the two adjusting portions 14. The overall structure of the clamp is compact, convenient to operate, and easy to use.

[0067] Based on the same inventive concept, the present application also provides a machine tool, comprising: a small desktop lathe

[0068] The clamp as described above.

[0069] The machine tool further comprises a rack (not shown in the figure), connecting pieces (not shown in the figure) and fitting rods (not shown in the figure) which are arranged in a spaced apart manner on the rack, the connecting pieces are connected to the mounting piece 1, the fitting rods are inserted into the mounting piece 1, and the axial direction of the fitting rods forms an angle with the arrangement direction A of the at least two clamping pieces 2.

[0070] The structure of the clamp and the corresponding technical effects can be referred to the foregoing, which will not be described here again. The clamp cooperates with the machine tool to realize clamping and machining of the workpiece. The clamp is further provided with spaced apart connecting pieces and fitting rods. The connecting pieces can provide support for the mounting piece 1, and the fitting rods can enhance the positioning effect of the clamp, which is conducive to stable machining of the workpiece.

[0071] In some or certain embodiments, the connecting pieces of the machine tool can be main shafts of the machine tool, or rear clamping positions of a desktop lathe of the machine tool, the fitting rods of the machine tool can be arranged as clamping position center rotating shaft rods, the clamping blocks on both sides of the rotating shaft rods are moved to clamp, and the adjusting portion 14 of the mounting piece 1 can be provided with a fitting hole 17 matched with the fitting rod.

[0072] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate different embodiments or examples described in the specification.

[0073] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize the combination, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A clamp characterized in that, The clamp comprises: a mounting member; at least two clamping members arranged side by side on the mounting member and forming a clamping groove between adjacent two clamping members, each clamping member being reciprocally movable relative to the mounting member along the arrangement direction of the at least two clamping members; at least two locking structures for locking the mounting member and the at least two clamping members respectively; each clamping member has a clamping side opposite to the other side of the clamping member, and the clamping member is provided with an avoiding through slot on the clamping side; the mounting member is provided with a sliding groove with a notch facing the clamping member, the extension direction of the sliding groove extending along the arrangement direction of the at least two clamping members, and the locking structure comprises: a limiting member in mortise and tenon cooperation with the sliding groove and reciprocally movable along the extension direction of the sliding groove; a locking member provided with a connecting portion and an abutting portion connected with each other, the connecting portion penetrating through one clamping member and being in screw cooperation with the limiting member, and the abutting portion abutting against the clamping member penetrated by the connecting portion.

2. The clamp of claim 1, wherein The mounting member is provided with a first rack, and the clamping member is provided with a second rack, the second rack being in mesh with the first rack.

3. The clamp of claim 2, wherein The first rack extends along the arrangement direction of the at least two clamping members, and the first rack is a straight rack.

4. The clamp of any one of claims 1 to 3, wherein The mounting member is further provided with a mounting through slot communicating with one clamping groove, and the extension direction of the mounting through slot forms an included angle with the arrangement direction of the at least two clamping members.

5. The clamp of claim 4, wherein The clamp comprises two clamping members arranged at intervals on the mounting member, and the mounting member comprises: a main body; two adjusting portions arranged at intervals on the main body and detachably connected with the main body, the mounting through slot being formed between the two adjusting portions, and the two clamping members being arranged on the two adjusting portions respectively.

6. The clamp of any one of claims 1 to 3, wherein The mounting member is provided with an interval fitting end and a connecting end, the fitting end being provided for mounting the clamping member, and the connecting end being provided with a connecting shaft hole.

7. The clamp of claim 6, wherein The clamp further comprises: at least two pressing members threadedly connected with the mounting member at intervals and each provided with a pressing end extending into the connecting shaft hole.

8. A machine tool, characterized by The clamp comprises: the clamp of any one of claims 1-7; a rack, a connecting member arranged at intervals on the rack, and a fitting rod, the connecting member being connected with the mounting member, the fitting rod being inserted into the mounting member, and the axial direction of the fitting rod forming an included angle with the arrangement direction of the at least two clamping members.

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