Machining clamp for upper shell of outdoor lamp

Abstract

The utility model discloses a machining clamp for an outdoor lamp upper shell, which comprises a bottom plate, a supporting assembly, a positioning assembly and a pressing assembly, the supporting assembly comprises a supporting seat and a supporting rod, the top of the supporting seat is provided with a first supporting surface and an arc-shaped supporting surface, and the arc-shaped supporting surface is attached to the first arc-shaped surface of the upper shell; the positioning assembly comprises a left positioning piece, a right positioning piece and a front positioning piece, the left positioning piece comprises a first mounting rod fixed to the bottom plate, a first top head slidably arranged at the top of the first mounting rod and a first spring located between the first mounting rod and the first top head, and the first spring is used for driving the first top head to be close to the right positioning piece; the first top is used for abutting against the left side surface of the upper shell; the pressing assembly comprises a pressing rod and a first air cylinder driving the pressing rod to press the upper shell downwards. According to the machining clamp for the outdoor lamp upper shell, the upper shell can be stably positioned, and the machining precision of the upper shell is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machining fixtures, in particular to a machining fixture for an upper shell of an outdoor open-air lamp. Background Art

[0002] Outdoor open-air lamps refer to lamps that provide lighting functions for outdoor roads. They generally refer to lamps within the range of road lighting in outdoor traffic lighting. Outdoor open-air lamps are widely used in various outdoor places where lighting is required.

[0003] Structurally, the outdoor open-air lamp has an upper shell, which is used to cover the top of the outdoor open-air lamp. The production of the upper shell is generally to die-cast it into a blank using a die-casting process, and then use machining equipment to finish the die-cast blank.

[0004] like Figure 1 As shown, the upper shell of the outdoor open-air lamp includes a top surface 100, a rear side surface 110, a front side surface 120, a left side surface 130 and a right side surface 140 which are inclined downward from the back to the front. The bottom of the upper shell has a mounting cavity. The top surface 100 and the rear side surface 110 are connected by a first arc-shaped surface 150. The left side surface 130 and the rear side surface 110 are inclined. The top surface 100 is also provided with a plurality of heat sinks, and a first groove 160 is formed between adjacent heat sinks.

[0005] During the production process of the upper shell, it is necessary to perform tapping and milling processing on the structure in the installation cavity. Before processing, the top surface 100 of the upper shell needs to be clamped downward on a machining fixture.

[0006] However, the existing machining fixture is not stable in positioning the upper shell, which affects the machining accuracy of the upper shell. Utility Model Content

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a machining fixture for the upper shell of an outdoor open-air lamp, which can position the upper shell firmly and ensure the machining accuracy of the upper shell.

[0008] According to the first aspect of the utility model, a machining fixture for the upper shell of an outdoor open-air lamp comprises: a base plate installed on a processing machine; a support assembly comprising a support seat and two support rods, the top of the support seat having a first support surface and an arc-shaped support surface, the first support surface abuts against the top surface of the upper shell for support, the arc-shaped support surface fits with the first arc-shaped surface of the upper shell to limit the rear side of the upper shell, and the two support rods abut against the bottom of the first groove of the upper shell for support; a positioning assembly comprising at least two left positioning members, at least two right positioning members and a front positioning member, the left positioning member abuts against the left side surface of the upper shell for positioning, The right positioning piece is abutted against the right side surface of the upper shell for positioning, the front positioning piece is abutted against the rear side wall of the first groove so that the front positioning piece and the arc-shaped supporting surface cooperate to position the upper shell front and back, the left positioning piece includes a first mounting rod fixed to the bottom plate, a first pin slidably arranged on the top of the first mounting rod, and a first spring located between the first mounting rod and the first pin, the first spring is used to drive the first pin to approach the right positioning piece, and the first pin is used to abut against the left side surface of the upper shell; the clamping assembly is at least provided with two, including a pressure rod and a first cylinder that drives the pressure rod to press the upper shell downward.

[0009] A machining fixture for an outdoor open-air lamp upper shell according to an embodiment of the utility model has at least the following beneficial effects:

[0010] 1. The utility model provides a bottom plate, which is mounted on a processing machine tool, so that a machining fixture can be fixed on the processing machine tool.

[0011] 2. The utility model provides a support assembly, wherein the support assembly includes a support seat and two support rods, the top of the support seat has a first support surface and an arc-shaped support surface, the first support surface is abutted and supported by the top surface of the upper shell, the arc-shaped support surface is fitted with the first arc-shaped surface of the upper shell to limit the rear side of the upper shell, and the two support rods are abutted and supported by the bottom of the first groove of the upper shell. It can be understood that the support seat and the two support rods can cooperate to support three points of the upper shell, so that the support assembly can firmly support the upper shell, and at the same time, the arc-shaped support surface is fitted with the first arc-shaped surface of the upper shell, so that the arc-shaped support surface can limit the rear side of the upper shell while supporting the upper shell, thereby avoiding the upper shell from moving backward and causing inaccurate positioning of the upper shell on the machining fixture.

[0012] 3. The utility model sets a positioning component, which includes at least two left positioning members, at least two right positioning members and a front positioning member. The left positioning member abuts against the left side surface of the upper shell for positioning, the right positioning member abuts against the right side surface of the upper shell for positioning, and the front positioning member abuts against the rear side wall of the first groove so that the front positioning member and the arc-shaped supporting surface cooperate to position the upper shell front and back. It can be understood that the left positioning member and the right positioning member cooperate to position the upper shell in the left and right directions, and the front positioning member and the arc-shaped supporting surface cooperate to position the upper shell in the front and back directions. When the upper shell is clamped, the arc-shaped supporting surface can guide the upper shell to be close to the front positioning member, thereby reducing the shaking gap between the upper shell and the positioning component along the front and back directions, thereby making the machining fixture firmly position the upper shell and ensuring the machining accuracy of the upper shell.

[0013] 4. The utility model provides a left positioning member comprising a first mounting rod fixed to the bottom plate, a first pin slidably arranged on the top of the first mounting rod, and a first spring located between the first mounting rod and the first pin, the first spring being used to drive the first pin to approach the right positioning member, and the first pin being used to abut the left side surface of the upper shell. It can be understood that when the first pin abuts the left side surface of the upper shell, the upper shell squeezes the first pin to approach the first mounting rod, so that the first pin and the first mounting rod cooperate to compress the first spring, and the elastic force generated after the first spring is compressed can drive the first pin to approach the right positioning member, so that the first pin pushes the upper shell toward the right positioning member, thereby eliminating the gap between the upper shell and the right positioning member and the gap between the upper shell and the first pin, avoiding the upper shell from shaking in the left and right directions when the positioning assembly positions the upper shell, and further, making the machining fixture firmly position the upper shell, thereby ensuring the machining accuracy of the upper shell.

[0014] 5. The utility model is provided with at least two clamping assemblies, the clamping assemblies including a pressure rod and a first cylinder driving the pressure rod to press the upper shell downward, thereby making the clamping of the upper shell by the machining fixture more secure.

[0015] According to some embodiments of the utility model, the first top head includes a frustum of a cone and a slide rod connected to the large diameter end of the frustum of a cone, the small diameter end of the frustum of a cone is used to abut the left side of the upper shell, and the first mounting rod has a first through hole for accommodating the sliding of the slide rod, and the diameter of the first through hole is smaller than the diameter of the large diameter end of the frustum of a cone.

[0016] According to some embodiments of the utility model, the sliding rod portion has an annular groove, the first spring is sleeved on the annular groove, the first through hole has an inner convex ring, the inner convex ring slides in cooperation with the annular groove, the inner convex ring is used to support one end of the first spring, and the other end of the first spring abuts against the side wall of the annular groove close to one end of the frustum portion.

[0017] According to some embodiments of the utility model, a limiting plate is provided at one end of the sliding rod portion away from the frustum portion, the limiting plate is adjacent to the annular groove, and the limiting plate abuts against a side of the inner convex ring away from the frustum portion for limiting positioning.

[0018] According to some embodiments of the present invention, the first mounting rod has a first countersunk hole, the first countersunk hole is located on a side of the inner convex ring away from the frustum portion, and the first countersunk hole is used to accommodate a limiting plate.

[0019] According to some embodiments of the utility model, one side of the limiting plate has a first screw rod, one end of the sliding rod portion away from the truncated cone portion has a threaded hole, and the first screw rod and the threaded hole are threadedly connected.

[0020] According to some embodiments of the present invention, the first plug is a plastic part.

[0021] According to some embodiments of the utility model, the right positioning member includes a second mounting rod and a second pin, the second mounting rod is fixed to the base plate, the second pin is mounted on the top of the second mounting rod, the second pin is used to abut the right side surface of the upper shell, and the second pin is a plastic part.

[0022] According to some embodiments of the present invention, the pressure rod of at least one of the clamping assemblies is located above the support seat, and the pressure rod cooperates with the support seat to press the upper shell up and down.

[0023] According to some embodiments of the utility model, a first pressure head is provided at one end of the pressure rod, the first pressure head is used to abut the upper shell, the first pressure head is located above the first arc-shaped surface, and the first pressure head cooperates with the first arc-shaped surface to press the upper shell up and down.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the structure of an upper shell of an outdoor open-air lamp according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic structural diagram of a machining fixture for an upper shell of an outdoor open-air lamp after the product is clamped in an embodiment of the utility model;

[0028] Figure 3It is a structural schematic diagram of a machining fixture for an upper shell of an outdoor open-air lamp according to an embodiment of the utility model;

[0029] Figure 4 for Figure 3 A top view is shown;

[0030] Figure 5 for Figure 4 AA cross-sectional view shown;

[0031] Figure 6 for Figure 5 An enlarged view of point B is shown.

[0032] Figure markings: 100-top surface, 110-rear side surface, 120-front side surface, 130-left side surface, 140-right side surface, 150-first arcuate surface, 160-first groove, 170-bottom plate, 180-support seat, 190-support rod, 200-first supporting surface, 210-arc-shaped supporting surface, 220-left positioning member, 230-right positioning member, 240-front positioning member, 250-first mounting rod, 260-first top head, 270-first spring, 280-pressure rod, 290-first cylinder, 300-conical cone portion, 310-sliding rod portion, 320-first through hole, 330-annular groove, 340-inner convex ring, 350-limiting plate, 360-first countersunk hole, 370-first screw rod, 380-second mounting rod, 390-second top head, 400-first pressure head. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] A machining fixture for an upper shell of an outdoor open-air lamp according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0038] Reference Figure 2 , Figure 3 and Figure 4 A machining fixture for an upper shell of an outdoor open-air lamp according to an embodiment of the utility model includes a base plate 170, a supporting assembly, a positioning assembly and a pressing assembly.

[0039] As for the base plate 170 , the base plate 170 is mounted on the processing machine, thereby enabling the machining jig to be fixed on the processing machine.

[0040] Specifically, the base plate 170 is fixed on the processing machine by bolts.

[0041] For the support assembly, the support assembly includes a support seat 180 and two support rods 190. The top of the support seat 180 has a first support surface 200 and an arc-shaped support surface 210. The first support surface 200 is abutted against the top surface 100 of the upper shell for support. The arc-shaped support surface 210 is fitted with the first arc-shaped surface 150 of the upper shell to limit the rear side of the upper shell. The two support rods 190 are abutted against the bottom of the first groove 160 of the upper shell for support.

[0042] It can be understood that the support seat 180 and the two support rods 190 can cooperate to support three points of the upper shell, so that the support assembly can firmly support the upper shell. At the same time, the arc-shaped support surface 210 fits with the first arc-shaped surface 150 of the upper shell, so that the arc-shaped support surface 210 can limit the rear side of the upper shell while supporting the upper shell, thereby preventing the upper shell from moving backward and causing inaccurate positioning of the upper shell on the machining fixture.

[0043] Reference Figure 5 and Figure 6 As for the positioning assembly, the positioning assembly includes at least two left positioning members 220, at least two right positioning members 230 and a front positioning member 240. The left positioning member 220 is abutted against the left side surface 130 of the upper shell for positioning, the right positioning member 230 is abutted against the right side surface 140 of the upper shell for positioning, and the front positioning member 240 is abutted against the rear side wall of the first groove 160 so that the front positioning member 240 and the arc-shaped supporting surface 210 cooperate to position the upper shell front and rear.

[0044] It can be understood that the left positioning member 220 and the right positioning member 230 cooperate to position the upper shell in the left and right directions, and the front positioning member 240 and the arc-shaped support surface 210 cooperate to position the upper shell in the front and rear directions, and the arc-shaped support surface 210 can guide the upper shell to be close to the front positioning member 240 when the upper shell is clamped, thereby reducing the shaking gap between the upper shell and the positioning assembly along the front and rear directions, thereby making the machining fixture firmly position the upper shell and ensuring the machining accuracy of the upper shell.

[0045] Furthermore, the left positioning member 220 includes a first mounting rod 250 fixed on the base plate 170, a first pin 260 slidably disposed on the top of the first mounting rod 250, and a first spring 270 located between the first mounting rod 250 and the first pin 260, the first spring 270 being used to drive the first pin 260 to approach the right positioning member 230, and the first pin 260 being used to abut against the left side surface 130 of the upper shell.

[0046] It can be understood that when the first push head 260 abuts against the left side 130 of the upper shell, the upper shell squeezes the first push head 260 close to the first mounting rod 250, so that the first push head 260 and the first mounting rod 250 cooperate to compress the first spring 270. The elastic force generated after the first spring 270 is compressed can drive the first push head 260 to approach the right positioning member 230, so that the first push head 260 pushes the upper shell toward the right positioning member 230, thereby eliminating the gap between the upper shell and the right positioning member 230 and the gap between the upper shell and the first push head 260, avoiding the upper shell from shaking in the left and right directions when the positioning assembly positions the upper shell, and then, making the machining fixture firmly position the upper shell, thereby ensuring the processing accuracy of the upper shell.

[0047] In some specific embodiments, the first head 260 includes a frustum portion 300, a slide rod portion 310 connected to the large diameter end of the frustum portion 300, the small diameter end of the frustum portion 300 is used to abut the left side surface 130 of the upper shell, and the first mounting rod 250 has a first through hole 320 for accommodating the sliding of the slide rod portion 310, and the diameter of the first through hole 320 is smaller than the diameter of the large diameter end of the frustum portion 300, so that the first mounting rod 250 can limit the frustum portion 300 to prevent the frustum portion 300 from entering the first through hole 320 and being unable to abut the upper shell.

[0048] Furthermore, the slide rod portion 310 has an annular groove 330, the first spring 270 is sleeved on the annular groove 330, and the first through hole 320 has an inner convex ring 340, which slides in cooperation with the annular groove 330, and the inner convex ring 340 is used to support one end of the first spring 270, and the other end of the first spring 270 abuts against the side wall of the annular groove 330 close to one end of the frustum portion 300. Thus, on the one hand, the annular groove 330 can provide an installation space for the first spring 270, so that the first spring 270 can be set in the first through hole 320 to prevent the first spring 270 from falling off, and on the other hand, the inner convex ring 340 can support the first spring 270, so that the first spring 270 can be compressed by the inner convex ring 340 and the frustum portion 300 to generate elastic force.

[0049] In some specific embodiments, a limiting plate 350 is provided at one end of the sliding rod portion 310 away from the frustum portion 300, and the limiting plate 350 is adjacent to the annular groove 330. The limiting plate 350 abuts against a side of the inner convex ring 340 away from the frustum portion 300 to limit the first head 260, thereby preventing the first head 260 from separating from the first mounting rod 250 in a direction close to the right positioning member 230.

[0050] In some specific embodiments, the first mounting rod 250 has a first countersunk hole 360, which is located on the side of the inner convex ring 340 away from the frustum portion 300. The first countersunk hole 360 ​​is used to accommodate the limit plate 350, so that when the machining fixture is unloaded, the limit plate 350 can be hidden in the first countersunk hole 360, thereby making the structure of the left positioning member 220 more compact.

[0051] In some specific embodiments, one side of the limit plate 350 has a first screw 370, and the end of the sliding rod portion 310 away from the frustum portion 300 has a threaded hole. The first screw 370 and the threaded hole are threadedly connected, thereby facilitating the quick disassembly of the limit plate 350, and further facilitating the disassembly and assembly of the first head 260 and the first mounting rod 250.

[0052] In some specific embodiments, the first plug 260 is a plastic part, thereby reducing the risk of the first plug 260 damaging the upper shell.

[0053] In some specific embodiments, the first mounting rod 250 has mounting portions on both sides of the bottom, and the mounting portions have waist-shaped holes extending from top to bottom. The length direction of the waist-shaped holes extends in a direction close to the right positioning member 230. A first bolt is provided on the waist-shaped holes, and the first bolt is threadedly connected to the bottom plate 170, thereby facilitating the adjustment of the distance between the left positioning member 220 and the right positioning member 230.

[0054] In some specific embodiments, the right positioning member 230 includes a second mounting rod 380 and a second top head 390. The second mounting rod 380 is fixed on the base plate 170. The second top head 390 is installed on the top of the second mounting rod 380. The second top head 390 is used to abut the right side surface 140 of the upper shell. The second top head 390 is a plastic part, thereby reducing the risk of the second top head 390 damaging the upper shell.

[0055] As for the clamping assembly, at least two are provided, and the clamping assembly includes a pressing rod 280 and a first cylinder 290 driving the pressing rod 280 to press the upper shell downward, so that the clamping of the machining fixture to the upper shell is more firmly.

[0056] In some specific embodiments, at least one pressure rod 280 of the clamping assembly is located above the support seat 180, and the pressure rod 280 cooperates with the support seat 180 to press the upper shell up and down, so that the support seat 180 can support the upper shell under a pressure rod 280 to prevent the pressure rod 280 from deforming the upper shell.

[0057] Furthermore, a first pressing head 400 is provided at one end of the pressure rod 280. The first pressing head 400 is used to abut the upper shell. The first pressing head 400 is located above the first curved surface 150. The first pressing head 400 cooperates with the first curved surface 150 to press the upper shell up and down. Therefore, when the first pressing head 400 presses the upper shell down, the first curved surface 150 can guide the upper shell to approach the front limit piece, thereby making the machining fixture more accurate in positioning the upper shell.

[0058] In some specific embodiments, at least one pressure rod 280 of the clamping assembly is located above the support rod 190, and the pressure rod 280 and the support rod 190 cooperate to press the upper shell up and down, so that the support rod 190 can support the upper shell under a pressure rod 280 to prevent the pressure rod 280 from deforming the upper shell.

[0059] In some specific embodiments, three clamping assemblies are provided, and the pressing rods 280 of the three clamping assemblies are respectively arranged above the support seat 180 and the two support columns.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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 one or more embodiments or examples in a suitable manner.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A machining fixture for the upper shell of an outdoor open-air lamp, characterized in that: include: A base plate (170) mounted on a processing machine; A support assembly comprises a support seat (180) and two support rods (190); the top of the support seat (180) is provided with a first support surface (200) and an arc-shaped support surface (210); the first support surface (200) is in contact with the top surface (100) of the upper shell for support; the arc-shaped support surface (210) is in contact with the first arc-shaped surface (150) of the upper shell for limiting the rear side of the upper shell; the two support rods (190) are in contact with the bottom of the first groove (160) of the upper shell for support; A positioning assembly comprises at least two left positioning members (220), at least two right positioning members (230) and a front positioning member (240), wherein the left positioning member (220) is abutted against the left side surface (130) of the upper shell for positioning, the right positioning member (230) is abutted against the right side surface (140) of the upper shell for positioning, and the front positioning member (240) is abutted against the rear side wall of the first groove (160) so that the front positioning member (240) and the arc-shaped supporting surface (210) cooperate to position the upper shell front and back. The positioning member (220) comprises a first mounting rod (250) fixed on the bottom plate (170), a first top head (260) slidably arranged on the top of the first mounting rod (250), and a first spring (270) located between the first mounting rod (250) and the first top head (260), wherein the first spring (270) is used to drive the first top head (260) to approach the right positioning member (230), and the first top head (260) is used to abut against the left side surface (130) of the upper shell; The pressing assemblies are provided with at least two, and include a pressing rod (280) and a first cylinder (290) driving the pressing rod (280) to press the upper shell downward.

2. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 1, characterized in that: The first top head (260) includes a frustum (300), a slide rod (310) connected to the large diameter end of the frustum (300), the small diameter end of the frustum (300) is used to abut the left side (130) of the upper shell, and the first mounting rod (250) has a first through hole (320) for accommodating the sliding of the slide rod (310), and the diameter of the first through hole (320) is smaller than the diameter of the large diameter end of the frustum (300).

3. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 2, characterized in that: The slide rod portion (310) has an annular groove (330), the first spring (270) is mounted on the annular groove (330), the first through hole (320) has an inner convex ring (340), the inner convex ring (340) slides in cooperation with the annular groove (330), the inner convex ring (340) is used to support one end of the first spring (270), and the other end of the first spring (270) abuts against the side wall of the annular groove (330) close to one end of the frustum portion (300).

4. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 3, characterized in that: A limiting plate (350) is provided at one end of the slide rod portion (310) away from the truncated cone portion (300), the limiting plate (350) is adjacent to the annular groove (330), and the limiting plate (350) abuts against a side of the inner convex ring (340) away from the truncated cone portion (300) for limiting.

5. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 4, characterized in that: The first mounting rod (250) has a first countersunk hole (360), the first countersunk hole (360) is located on a side of the inner convex ring (340) away from the truncated cone portion (300), and the first countersunk hole (360) is used to accommodate the limiting plate (350).

6. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 4, characterized in that: One side of the limiting plate (350) has a first screw rod (370), and one end of the sliding rod portion (310) away from the truncated cone portion (300) has a threaded hole, and the first screw rod (370) and the threaded hole are threadedly connected.

7. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 1, characterized in that: The first top head (260) is a plastic part.

8. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 1, characterized in that: The right positioning member (230) includes a second mounting rod (380) and a second top head (390), wherein the second mounting rod (380) is fixed on the base plate (170), and the second top head (390) is installed on the top of the second mounting rod (380), and the second top head (390) is used to abut against the right side surface (140) of the upper shell, and the second top head (390) is a plastic part.

9. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 1, characterized in that: The pressing rod (280) of at least one of the pressing assemblies is located above the support seat (180), and the pressing rod (280) cooperates with the support seat (180) to press the upper shell up and down.

10. The machining fixture for the upper shell of an outdoor open-air lamp according to claim 9, characterized in that: A first pressing head (400) is provided at one end of the pressing rod (280), and the first pressing head (400) is used to abut against the upper shell. The first pressing head (400) is located above the first arcuate surface (150), and the first pressing head (400) cooperates with the first arcuate surface (150) to press the upper shell up and down.

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